1. A high-precision corrugated paper die cutting device based on rigid contact is characterized by comprising a die cutting roller and a backing roller which are matched and combined to form a die cutting roller group, wherein a die cutting plate is arranged on the die cutting roller, convex knife lines and pressing lines are distributed on the die cutting plate, a rigid backing plate is arranged on the backing roller, and a plurality of die cutting grooves are distributed on the rigid backing plate; when the corrugated board is subjected to die cutting, the surfaces of the knife lines and the rigid base plate are correspondingly positioned on the upper side and the lower side of the corrugated board for die cutting operation, the press lines and the die cutting grooves are correspondingly positioned on the upper side and the lower side of the corrugated board for indentation operation, and the knife lines, the press lines and the rigid base plate on the die cutting board are in rigid contact.

2. A rigid contact based high precision corrugated paper die cutting device as claimed in claim 1 wherein, two sets of clearance adjusting mechanisms with symmetrical structure are respectively arranged at two ends of the die cutting roller set, each clearance adjusting mechanism is connected with the end of the die cutting roller or the end of the backing roller.

3. A rigid contact-based high-precision corrugated paper die-cutting device as claimed in claim 2, wherein the gap adjusting mechanism comprises a first wedge-shaped block, a second wedge-shaped block, a hydraulic adjusting assembly and a screw rod adjusting assembly; the end part of the die-cutting roller and the end part of the cushion roller are respectively arranged on a frame of the die-cutting device through corresponding mounting plates; the first wedge block and the second wedge block are arranged in an up-and-down overlapping mode and are arranged at the bottom of the mounting plate, one end of the first wedge block is connected with the hydraulic adjusting assembly, and one end of the second wedge block is connected with the screw rod adjusting assembly.

4. A rigid contact-based high-precision corrugated paper die-cutting device as claimed in claim 3, wherein in the gap adjusting mechanism, a hydraulic adjusting component and a screw rod adjusting component are respectively arranged at two sides of the first wedge-shaped block and the second wedge-shaped block after being overlapped; from the direction of hydraulic pressure adjusting part to lead screw adjusting part, the thickness of first wedge reduces gradually, and the thickness of second wedge increases gradually.

5. A rigid contact-based high-precision corrugated paper die-cutting device as claimed in claim 3, wherein in the gap adjusting mechanism, the hydraulic adjusting assembly comprises a hydraulic power device and a multi-section connecting rod, one end of the multi-section connecting rod is connected with the hydraulic power device, and the other end of the multi-section connecting rod is connected with the first wedge-shaped block; in the multiple sections of connecting rods, any two adjacent sections of connecting rods are arranged on a rack of the die cutting device through a hinged seat, a fixed shaft is arranged at the end part of the connecting rod connected with the first wedge-shaped block, a connecting part extends from the end part of the first wedge-shaped block, and the end part of the connecting rod is fixedly connected with the connecting part through the fixed shaft.

6. A rigid contact-based high-precision corrugated paper die-cutting device as claimed in claim 3, wherein in the gap adjusting mechanism, the screw rod adjusting component comprises a screw rod, a nut and a rotary driving device, the outer side of the nut is fixedly connected with one end of the second wedge-shaped block, the inner side of the nut is in threaded connection with the screw rod, and one end of the screw rod is connected with the rotary driving device.

7. A rigid contact based high precision corrugated paper die cutting device as claimed in claim 1 wherein said rigid backing plate is a bendable hard metal plate material, the rigid backing plate is removably mounted on the backing roller; when the rigid base plate is arranged on the backing roller, the rigid base plate is bent to cover the surface of the backing roller; when the rigid backing plate is detached, the rigid backing plate is in an unfolded flat plate shape.

8. A rigid contact based high precision corrugated paper die cutting apparatus as claimed in claim 7 wherein said rigid backing plate is stainless steel plate.

9. A rigid contact-based high-precision corrugated paper die-cutting device as claimed in claim 1, wherein the rigid backing plate is further provided with fixing structures at two sides parallel to the axis of the backing roller, and when the rigid backing plate is mounted on the backing roller, the rigid backing plate is locked and fixed on the backing roller through the fixing structures.

10. A rigid contact-based high-precision corrugated paper die-cutting device as claimed in claim 9, wherein the fixing structure comprises an axial fixing strip, a hanging hole, an elastic fixing strip and a hook; one side edge of the rigid backing plate is provided with a fixed mounting hole, each fixed mounting hole is tightly pressed and fixed on the backing roller through an axial fixing strip, the other side edges of the axial fixing strip and the rigid backing plate are respectively provided with a one-to-one corresponding hanging hole, two ends of the elastic fixing strip are respectively provided with a hook, and the axial fixing strip is connected with each group of corresponding hanging holes on the rigid backing plate through one elastic fixing strip and the hooks at the two ends of the elastic fixing strip;

or the fixing structure comprises an axial fixing strip, a lock hole, an elastic fixing strip and a lock catch; one side of the rigid backing plate is provided with a fixed mounting hole, each fixed mounting hole is tightly pressed and fixed on the backing roller through an axial fixing strip, the other sides of the axial fixing strip and the rigid backing plate are respectively provided with a locking hole in one-to-one correspondence, two ends of the elastic fixing strip are respectively provided with a lock catch, and the axial fixing strip is connected with each group of corresponding locking holes on the rigid backing plate through one elastic fixing strip and the lock catches at the two ends of the elastic fixing strip.

Background

In the process of printing corrugated cardboard for packaging, the corrugated cardboard is required to obtain a pre-designed shape or cut mark, and therefore, the die cutting machine is one of the indispensable devices for printing and processing the corrugated cardboard. The die cutting roller group is used as a core mechanism of the die cutting machine and mainly comprises a die cutting roller and a rubber pad roller which are matched with each other, and through arranging a knife line used as a die cutting tool and a pressing line used for forming an indentation on the die cutting roller, when the corrugated board passes through a gap between the die cutting roller and the rubber pad roller, the knife line and the pressing line are used for respectively forming the cutting mark and the indentation on the corrugated board.

In the die-cutting roller set of the traditional die-cutting machine, because the surface layer of the rubber cushion roller is made of flexible rubber cushion materials, indentations or pits are easily generated on the surface of the rubber cushion roller in the die-cutting process, and the die-cutting effect and precision of continuous processing are influenced. In order to solve this problem, in both of the invention applications of application nos. 201811035401.5 and 201911218072.2, a method of repairing the surface of a blanket roll by adding a repairing roll to one side of the blanket roll has been proposed. Although the mode can realize the on-line repair of the rubber cushion roller without disassembly, the repair precision is higher. In practical application, however, the surface precision of the rubber cushion roller is reduced continuously along with continuous grinding and repairing of the rubber cushion roller; in addition, because the surface layer of the rubber cushion roller is still made of flexible rubber cushion materials, in the die cutting process, the corrugated board is easy to misplace, shift and the like along with the extrusion of the surface layer of the rubber cushion roller, and particularly for large corrugated boards, the phenomenon is more obvious, so that the die cutting precision of the large corrugated boards cannot be effectively improved, and the product quality is easily influenced.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide a high-precision corrugated paper die cutting device based on rigid contact, which can effectively avoid the phenomena of dislocation, deviation and the like of corrugated boards, greatly improve the die cutting precision of the corrugated boards, and effectively solve the problem that the conventional circular die cutting is difficult to achieve high-precision die cutting.

The technical scheme of the invention is as follows: a high-precision corrugated paper die cutting device based on rigid contact comprises a die cutting roller and a backing roller which are matched and combined to form a die cutting roller group, wherein a die cutting plate is arranged on the die cutting roller, convex knife lines and pressing lines are distributed on the die cutting plate, a rigid backing plate is arranged on the backing roller, and a plurality of die cutting grooves are distributed on the rigid backing plate; when the corrugated board is subjected to die cutting, the surfaces of the knife lines and the rigid base plate are correspondingly positioned on the upper side and the lower side of the corrugated board for die cutting operation, the press lines and the die cutting grooves are correspondingly positioned on the upper side and the lower side of the corrugated board for indentation operation, and the knife lines, the press lines and the rigid base plate on the die cutting board are in rigid contact. Wherein, through installing the rigidity backing plate on the backing roll, replace traditional cushion roller and use, when corrugated container board when the cross cutting roller group, form the rigidity contact when carrying out the cross cutting to corrugated container board between the knife line on the die cutting board and the rigidity backing plate, realize the accurate cross cutting to corrugated container board, line ball and the cross cutting recess one-to-one on the die cutting board are located both sides about the corrugated container board indentation position of predesign simultaneously, and also be the rigidity contact, can form the accurate indentation of location, the shaping effect of indentation is also more stable than traditional cushion roller simultaneously, also avoid the indentation skew, phenomenons such as dislocation take place. The die cutting plate with the cutter lines and the pressing lines is formed by adopting a traditional die cutting plate, and the distribution situation of the cutter lines and the pressing lines can be adjusted according to actual requirements.

Two groups of clearance adjusting mechanisms with symmetrical structures are respectively arranged at two ends of the die cutting roller group, and each clearance adjusting mechanism is connected with the end part of the die cutting roller or the end part of the cushion roller. When the gap between the die-cutting roller and the rubber cushion roller needs to be adjusted, the two sets of gap adjusting mechanisms at the two ends of the die-cutting roller set synchronously operate to ensure that the die-cutting roller or the cushion roller stably lift or descend, and further ensure the accuracy of gap adjustment.

The clearance adjusting mechanism comprises a first wedge-shaped block, a second wedge-shaped block, a hydraulic adjusting assembly and a screw rod adjusting assembly; the end part of the die-cutting roller and the end part of the cushion roller are respectively arranged on a frame of the die-cutting device through corresponding mounting plates; the first wedge block and the second wedge block are arranged in an up-and-down overlapping mode and are arranged at the bottom of the mounting plate, one end of the first wedge block is connected with the hydraulic adjusting assembly, and one end of the second wedge block is connected with the screw rod adjusting assembly.

In the clearance adjusting mechanism, a hydraulic adjusting assembly and a screw rod adjusting assembly are respectively arranged on two sides of the first wedge-shaped block and the second wedge-shaped block after being overlapped; from the direction of hydraulic pressure adjusting part to lead screw adjusting part, the thickness of first wedge reduces gradually, and the thickness of second wedge increases gradually.

In the clearance adjusting mechanism, a hydraulic adjusting assembly comprises a hydraulic power device and a multi-section connecting rod, one end of the multi-section connecting rod is connected with the hydraulic power device, and the other end of the multi-section connecting rod is connected with a first wedge-shaped block; in the multiple sections of connecting rods, any two adjacent sections of connecting rods are arranged on a rack of the die cutting device through a hinged seat, a fixed shaft is arranged at the end part of the connecting rod connected with the first wedge-shaped block, a connecting part extends from the end part of the first wedge-shaped block, and the end part of the connecting rod is fixedly connected with the connecting part through the fixed shaft. The hydraulic power device can adopt components such as a universal hydraulic cylinder and the like, and each connecting rod can swing along with the swing of the hinged seat, so that the first wedge-shaped block is driven to horizontally move; two groups of hydraulic adjusting assemblies positioned at two ends of the die cutting roller group run synchronously.

In the clearance adjusting mechanism, the screw rod adjusting assembly comprises a screw rod, a nut and a rotary driving device, the outer side of the nut is fixedly connected with one end of the second wedge-shaped block, the inner side of the nut is in threaded connection with the screw rod, and one end of the screw rod is connected with the rotary driving device. The rotary driving device can be composed of parts such as a universal driving motor, a reduction gearbox, a coupler and the like, two groups of screw rod adjusting assemblies positioned at two ends of the die cutting roller set are connected through the same driving shaft, and the two groups of screw rod adjusting assemblies synchronously act to ensure the precision of gap adjustment.

Among the above-mentioned clearance adjustment mechanism, drive first wedge through hydraulic pressure adjusting part and carry out horizontal migration for the second wedge, drive the second wedge through lead screw adjusting part and carry out horizontal migration for first wedge, utilize the thickness change of first wedge and second wedge, thereby make the mounting panel drive corresponding die-cutting roller or backing roll and go up and down, for the mounting structure of stabilizing die-cutting roller and backing roll, still be equipped with the hydraulic pressure mechanism (this structure is the same with traditional cross cutting machine) of stabilizing its structure usefulness in the both sides of mounting panel usually, ensure that the mounting panel only carries out elevating movement, avoid the mounting panel to follow the wedge of its below and carry out horizontal migration. In addition, in the clearance adjusting mechanism, the hydraulic adjusting assembly and the first wedge-shaped block have the main functions of realizing coarse adjustment of the clearance on one hand and playing a certain supporting role on the mounting plate and the die-cutting roller or the cushion roller corresponding to the mounting plate on the other hand; the screw rod adjusting assembly and the second wedge-shaped block are mainly used for realizing fine adjustment of the gap, and the screw rod adjusting assembly is high in precision, so that the horizontal moving distance of the second wedge-shaped block can be accurately controlled, the lifting distance of the mounting plate and the corresponding die-cutting roller or cushion roller of the mounting plate can be accurately controlled, and the gap between the die-cutting roller and the cushion roller can be accurately adjusted.

Preferably, the rigid backing plate is a bendable hard metal plate, and the rigid backing plate is detachably mounted on the backing roller; when the rigid base plate is arranged on the backing roller, the rigid base plate is bent to cover the surface of the backing roller; when the rigid backing plate is detached, the rigid backing plate is in an unfolded flat plate shape. According to the design requirements of the cutting marks (namely the die cutting positions) and the indentations of different corrugated paper products, the rigid base plates with different die cutting grooves can be quickly replaced on the base rollers, the production requirements of different products are met, and the corrugated paper die cutting machine is flexible and convenient to use.

Further, the rigid backing plate is made of stainless steel plates.

And when the rigid base plate is arranged on the pad roller, the rigid base plate is locked and fixed on the pad roller through the fixing structure. Through this fixed knot structure, can realize the quick installation or the dismantlement of rigid backing plate. Wherein, fixed knot constructs can adopt one of following two kinds of structural style:

(1) the fixing structure comprises an axial fixing strip, a hanging hole, an elastic fixing strip and a hook; one side edge of the rigid backing plate is provided with a fixed mounting hole, each fixed mounting hole is tightly pressed and fixed on the backing roller through an axial fixing strip, the other side edges of the axial fixing strip and the rigid backing plate are respectively provided with a hanging hole in one-to-one correspondence, two ends of the elastic fixing strip are respectively provided with a hook, and the axial fixing strip is connected with each group of corresponding hanging holes on the rigid backing plate through one elastic fixing strip and the hooks at the two ends. When the rigid backing plate is installed, one side edge of the rigid backing plate is pressed and fixedly installed on the backing roller along the axis direction of the backing roller through the axial fixing strip, then the rigid backing plate is rolled and covered on the surface of the backing roller through the rotation of the backing roller, and then the hooks at the two ends of the elastic fixing strip are respectively hooked on the other side edge of the rigid backing plate and the hanging holes in the axis fixing strip, so that the rigid backing plate is fixedly locked on the surface of the backing roller.

(2) The fixing structure comprises an axial fixing strip, a lock hole, an elastic fixing strip and a lock catch; one side of the rigid backing plate is provided with a fixed mounting hole, each fixed mounting hole is tightly pressed and fixed on the backing roller through an axial fixing strip, the other sides of the axial fixing strip and the rigid backing plate are respectively provided with a locking hole in one-to-one correspondence, two ends of the elastic fixing strip are respectively provided with a lock catch, and the axial fixing strip is connected with each group of corresponding locking holes on the rigid backing plate through one elastic fixing strip and the lock catches at the two ends of the elastic fixing strip. When the rigid backing plate is installed, one side edge of the rigid backing plate is pressed and fixedly installed on the backing roller along the axis direction of the backing roller through the axial fixing strip, then the rigid backing plate is rolled and covered on the surface of the backing roller through the rotation of the backing roller, and then the other side edge of the rigid backing plate and the lock holes in the axis fixing strip are respectively locked through the lock catches at the two ends of the elastic fixing strip, so that the rigid backing plate is fixedly locked on the surface of the backing roller.

In the two fixing structures, the hook and the lock catch can adopt the existing general hook or lock catch in the market. In addition, through holes are respectively formed in the pad roller and the axial fixing strip corresponding to each fixing mounting hole on the rigid pad plate, and the axial fixing strip, the rigid pad plate and the pad roller are locked and fixed through screws; wherein, each fixed mounting hole is a round hole or a long hole.

Furthermore, auxiliary mounting holes can be distributed on the rigid backing plate. When the die cutting machine is applied to processing large or ultra-large corrugated boards, the rigid base plate and the pad roller are oversized, and the mounting stability of the rigid base plate on the pad roller can be further enhanced through the auxiliary mounting holes. Meanwhile, the difference between the depth of the die cutting groove and the thickness of the corrugated board is smaller than the height of the pressing line protruding out of the surface of the die cutting board. And when the corrugated board passes through, stable indentation can be formed between the pressing line and the die cutting groove.

When the high-precision corrugated paper die cutting device based on rigid contact is used, the principle is as follows: through installing the rigidity backing plate on the backing roll, replace traditional cushion roller and use, when corrugated container board when the cross cutting roller group, form the rigidity contact when carrying out the cross cutting to corrugated container board between tool line on the die cutting board and the rigidity backing plate, realize the accurate cross cutting to corrugated container board, line ball and the cross cutting recess one-to-one on the die cutting board are located both sides about the corrugated container board indentation position of predesign simultaneously, and also be the rigidity contact, can form the accurate indentation of location, the shaping effect of indentation is also more stable than traditional cushion roller simultaneously, also avoid the indentation skew, phenomenons such as dislocation take place. The die cutting plate with the cutter lines and the pressing lines is formed by adopting a traditional die cutting plate, and the distribution situation of the cutter lines and the pressing lines can be adjusted according to actual requirements. Meanwhile, when the rigid base plate is mounted or dismounted, or the gap between the pad roller and the die-cutting roller needs to be adjusted to adapt to different corrugated paper board processing, the gap can be adjusted through the gap adjusting mechanism, the lifting motion of the pad roller or the die-cutting roller connected with the first wedge-shaped block and the second wedge-shaped block is realized through the relative horizontal movement of the first wedge-shaped block and the second wedge-shaped block, the coarse adjustment of the gap can be realized through a hydraulic adjusting assembly, the fine adjustment of the gap can be realized through a screw rod adjusting assembly, the gap adjusting precision is high, and the high-precision die-cutting is further ensured.

Compared with the prior art, the invention has the following beneficial effects:

this high accuracy corrugated paper cutting device based on rigidity contact is through installing the rigidity backing plate on the backing roller, replace traditional cushion roller and use, and set up on the rigidity backing plate with the die-cutting recess that the line ball is corresponding on the die-cutting roller, with its application in corrugated container board cross cutting man-hour, on the one hand, make through the rigidity backing plate and form the rigidity contact between the tangent line on the die-cutting board and the surface of rigidity backing plate, can effectively avoid corrugated container board to produce the skew, phenomenons such as dislocation take place, on the other hand, through set up the die-cutting recess on the rigidity backing plate, cooperate with the line ball on the die-cutting board, can guarantee to form the accurate cut mark of location in corrugated container board course of working, the shaping effect of indentation is also more stable than traditional cushion roller simultaneously, consequently, compare traditional cushion roller structure, this cutting device's application can increase substantially corrugated container board's cross cutting precision. Production tests show that the die cutting precision of the corrugated paper die cutting device can reach the flat-pressing die cutting precision after the rigid backing plate is adopted, and the problem that the existing round-pressing round die cutting is difficult to achieve high-precision die cutting is effectively solved.

In the rigid contact-based high-precision corrugated paper die cutting device, the rigid base plate is of a detachable structure, a production user can select the corresponding rigid base plate to install and use according to the actual processing requirement of the corrugated paper board, the use method is simple and easy to operate, the use is flexible and convenient, and the rigid contact-based high-precision corrugated paper die cutting device can be widely popularized and used in corrugated paper die cutting machines of various specifications.

In the high-precision corrugated paper die-cutting device based on rigid contact, the gap adjusting mechanisms are arranged at the two ends of the die-cutting roller group, when a rigid base plate is installed or disassembled, or the gap between the pad roller and the die-cutting roller needs to be adjusted to adapt to different corrugated paper board processing, the gap between the pad roller and the die-cutting roller is adjusted through the gap adjusting mechanisms to adapt to production or equipment maintenance requirements, meanwhile, the gap adjusting mechanisms can utilize the hydraulic adjusting assemblies to realize coarse adjustment of the gap, the fine adjustment of the gap is realized through the screw rod adjusting assemblies, the gap adjusting precision is high, and high-precision die cutting is further ensured.

This high accuracy corrugated paper cutting device based on rigid contact uses the back, compares traditional cushion roller structure, still can save the use of cushion roller repair mechanism, can effectively reduce production facility cost.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the high-precision corrugated paper die cutting device based on rigid contact.

Fig. 2 is a front view of the high precision corrugated paper die cutting apparatus of fig. 1.

Fig. 3 is a schematic structural view of a backlash adjustment mechanism in the structure shown in section a-a in fig. 2.

Fig. 4 is a schematic structural view of a first wedge block and a hydraulic adjustment assembly in the lash adjustment mechanism of fig. 3.

Fig. 5 is a schematic structural view of a second wedge block and a screw rod adjusting assembly in the gap adjusting mechanism shown in fig. 3.

In the above figures, the components indicated by the respective reference numerals are as follows: 1 is the die-cutting roller, 2 is the backing roll, 3 is the brush roller of giving up waste, 4 is the rigidity backing plate, 5 is the cross cutting recess, 6 is first wedge, 7 is the second wedge, 8 is the connecting rod, 9 is articulated seat, 10 is the fixed axle, 11 is connecting portion, 12 is the frame, 13 is the mounting panel, 14 is the lead screw, 15 is the nut, 16 is rotary drive device, 17 is the drive shaft.

Detailed Description

The present invention will be described in further detail with reference to examples, but the embodiments of the present invention are not limited thereto.

Example 1

The embodiment of the invention relates to a rigid contact-based high-precision corrugated paper die cutting device, which comprises a die cutting roller 1 and a backing roller 2 (in the embodiment, a waste hair cleaning brush roller 3 is further arranged on one side of the backing roller), wherein the die cutting roller 1 and the backing roller 2 are matched and combined to form a die cutting roller group; when the corrugated board is subjected to die cutting, the surfaces of the knife lines and the rigid base plate are correspondingly positioned on the upper side and the lower side of the corrugated board for die cutting operation, the press lines and the die cutting grooves are correspondingly positioned on the upper side and the lower side of the corrugated board for indentation operation, and the knife lines, the press lines and the rigid base plate on the die cutting board are in rigid contact. Wherein, through installing the rigidity backing plate on the backing roll, replace traditional cushion roller and use, when corrugated container board when the cross cutting roller group, form the rigidity contact when carrying out the cross cutting to corrugated container board between the knife line on the die cutting board and the rigidity backing plate, realize the accurate cross cutting to corrugated container board, line ball and the cross cutting recess one-to-one on the die cutting board are located both sides about the corrugated container board indentation position of predesign simultaneously, and also be the rigidity contact, can form the accurate indentation of location, the shaping effect of indentation is also more stable than traditional cushion roller simultaneously, also avoid the indentation skew, phenomenons such as dislocation take place. The die cutting plate with the cutter lines and the pressing lines is formed by adopting a traditional die cutting plate, and the distribution situation of the cutter lines and the pressing lines can be adjusted according to actual requirements.

In addition, two groups of clearance adjusting mechanisms with symmetrical structures are respectively arranged at two ends of the die cutting roller group, and each clearance adjusting mechanism is connected with the end part of the die cutting roller or the end part of the cushion roller (in the embodiment, each clearance adjusting mechanism is connected with two ends of the die cutting roller). When the gap between the die-cutting roller and the rubber cushion roller needs to be adjusted, the two sets of gap adjusting mechanisms at the two ends of the die-cutting roller set synchronously operate to ensure that the die-cutting roller or the cushion roller stably lift or descend, and further ensure the accuracy of gap adjustment. As shown in fig. 3, the clearance adjusting mechanism comprises a first wedge block 6, a second wedge block 7, a hydraulic adjusting assembly and a screw rod adjusting assembly; the end part of the die-cutting roller and the end part of the cushion roller are respectively arranged on a frame of the die-cutting device through corresponding mounting plates 13; the first wedge block and the second wedge block are arranged in an up-and-down overlapping mode and are arranged at the bottom of the mounting plate, one end of the first wedge block is connected with the hydraulic adjusting assembly, and one end of the second wedge block is connected with the screw rod adjusting assembly. The hydraulic adjusting assembly and the screw rod adjusting assembly are respectively arranged on two sides of the first wedge-shaped block and the second wedge-shaped block after being overlapped; from the direction of hydraulic pressure adjusting part to lead screw adjusting part, the thickness of first wedge reduces gradually, and the thickness of second wedge increases gradually. In the gap adjusting mechanism, as shown in fig. 3 or 4, the hydraulic adjusting assembly includes a hydraulic power device (not shown in the figure) and a multi-section connecting rod 8, one end of the multi-section connecting rod is connected with the hydraulic power device, and the other end of the multi-section connecting rod is connected with the first wedge block; in the multiple sections of connecting rods, any two adjacent sections of connecting rods are arranged on a frame 12 of the die cutting device through a hinge seat 9, a fixed shaft 10 is arranged at the end part of the connecting rod connected with the first wedge-shaped block, a connecting part 11 extends from the end part of the first wedge-shaped block, and the end part of the connecting rod is fixedly connected with the connecting part through the fixed shaft. The hydraulic power device can adopt components such as a universal hydraulic cylinder and the like, and each connecting rod can swing along with the swing of the hinged seat, so that the first wedge-shaped block is driven to horizontally move; two groups of hydraulic adjusting assemblies positioned at two ends of the die cutting roller group run synchronously. As shown in fig. 3 or fig. 5, the lead screw adjusting assembly includes a lead screw 14, a nut 15 and a rotation driving device 16, wherein the outer side of the nut is fixedly connected with one end of the second wedge block, the inner side of the nut is in threaded connection with the lead screw, and one end of the lead screw is connected with the rotation driving device. The rotary driving device can be composed of parts such as a universal driving motor, a reduction gearbox, a coupler and the like, two groups of screw rod adjusting assemblies positioned at two ends of the die cutting roller set are connected through the same driving shaft 17, and the two groups of screw rod adjusting assemblies act synchronously to ensure the precision of gap adjustment. Among this clearance adjustment mechanism, drive first wedge through hydraulic pressure adjusting part and carry out horizontal migration for the second wedge, drive the second wedge through lead screw adjusting part and carry out horizontal migration for first wedge, utilize the thickness change of first wedge and second wedge, thereby make the mounting panel drive corresponding die-cutting roller or backing roll and go up and down, for the mounting structure of stabilizing die-cutting roller and backing roll, still be equipped with the hydraulic pressure mechanism (this structure is the same with traditional cross cutting machine) of stabilizing its structure usefulness in the both sides of mounting panel usually, ensure that the mounting panel only carries out elevating movement, avoid the mounting panel to follow the wedge of its below and carry out horizontal migration. In addition, in the clearance adjusting mechanism, the hydraulic adjusting assembly and the first wedge-shaped block have the main functions of realizing coarse adjustment of the clearance on one hand and playing a certain supporting role on the mounting plate and the die-cutting roller or the cushion roller corresponding to the mounting plate on the other hand; the screw rod adjusting assembly and the second wedge-shaped block are mainly used for realizing fine adjustment of the gap, and the screw rod adjusting assembly is high in precision, so that the horizontal moving distance of the second wedge-shaped block can be accurately controlled, the lifting distance of the mounting plate and the corresponding die-cutting roller or cushion roller of the mounting plate can be accurately controlled, and the gap between the die-cutting roller and the cushion roller can be accurately adjusted.

In the embodiment, the rigid base plate is a bendable stainless steel plate, and the rigid base plate is detachably arranged on the pad roller; when the rigid base plate is arranged on the backing roller, the rigid base plate is bent to cover the surface of the backing roller; when the rigid backing plate is detached, the rigid backing plate is in an unfolded flat plate shape. According to the design requirements of the cutting marks and the indentation of different corrugated paper products, the rigid base plate with different die cutting grooves can be quickly replaced on the pad roller, the production requirements of different products are met, and the corrugated paper die cutting device is flexible and convenient to use. And the rigid base plate is also provided with fixing structures (not shown in the figure) on two sides parallel to the axis of the pad roller, and the rigid base plate is locked and fixed on the pad roller through the fixing structures when being arranged on the pad roller. Through this fixed knot structure, can realize the quick installation or the dismantlement of rigid backing plate. The fixing structure comprises an axial fixing strip, a hanging hole, an elastic fixing strip and a hook; one side edge of the rigid backing plate is provided with a fixed mounting hole, each fixed mounting hole is tightly pressed and fixed on the backing roller through an axial fixing strip, the other side edges of the axial fixing strip and the rigid backing plate are respectively provided with a hanging hole in one-to-one correspondence, two ends of the elastic fixing strip are respectively provided with a hook, and the axial fixing strip is connected with each group of corresponding hanging holes on the rigid backing plate through one elastic fixing strip and the hooks at the two ends. When the rigid backing plate is installed, one side edge of the rigid backing plate is pressed and fixedly installed on the backing roller along the axis direction of the backing roller through the axial fixing strip, then the rigid backing plate is rolled and covered on the surface of the backing roller through the rotation of the backing roller, and then the hooks at the two ends of the elastic fixing strip are respectively hooked on the other side edge of the rigid backing plate and the hanging holes in the axis fixing strip, so that the rigid backing plate is fixedly locked on the surface of the backing roller. Wherein, the hook and the elastic fixing strip can be made of the existing universal fittings in the market. In addition, through holes are respectively arranged on the pad roller and the axial fixing strip corresponding to each fixed mounting hole on the rigid pad plate, and the axial fixing strip, the rigid pad plate and the pad roller are locked and fixed through screws. Wherein each fixed mounting hole on the rigid backing plate is a round hole or a long hole. The difference between the depth of the die cutting groove and the thickness of the corrugated board is smaller than the height of the pressing line protruding out of the surface of the die cutting board. And when the corrugated board passes through, stable indentation can be formed between the pressing line and the die cutting groove.

When the high-precision corrugated paper die cutting device based on rigid contact is used, the principle is as follows: through installing the rigidity backing plate on the backing roll, replace traditional cushion roller and use, when corrugated container board when the cross cutting roller group, form the rigidity contact when carrying out the cross cutting to corrugated container board between tool line on the die cutting board and the rigidity backing plate, realize the accurate cross cutting to corrugated container board, line ball and the cross cutting recess one-to-one on the die cutting board are located both sides about the corrugated container board indentation position of predesign simultaneously, and also be the rigidity contact, can form the accurate indentation of location, the shaping effect of indentation is also more stable than traditional cushion roller simultaneously, also avoid the indentation skew, phenomenons such as dislocation take place. Thereby achieving the purpose of effectively improving the die cutting precision. Meanwhile, when the rigid base plate is mounted or dismounted, or the gap between the pad roller and the die-cutting roller needs to be adjusted to adapt to different corrugated paper board processing, the gap can be adjusted through the gap adjusting mechanism, the lifting motion of the pad roller or the die-cutting roller connected with the first wedge-shaped block and the second wedge-shaped block is realized through the relative horizontal movement of the first wedge-shaped block and the second wedge-shaped block, the coarse adjustment of the gap can be realized through a hydraulic adjusting assembly, the fine adjustment of the gap can be realized through a screw rod adjusting assembly, the gap adjusting precision is high, and the high-precision die-cutting is further ensured.

Example 2

Compared with the embodiment 1, the high-precision corrugated paper die-cutting device based on rigid contact of the embodiment is different in that: in the fixing structures on the two sides of the rigid base plate, each fixing structure comprises an axial fixing strip, a lock hole, an elastic fixing strip and a lock catch; one side of the rigid backing plate is provided with a fixed mounting hole, each fixed mounting hole is tightly pressed and fixed on the backing roller through an axial fixing strip, the other sides of the axial fixing strip and the rigid backing plate are respectively provided with a locking hole in one-to-one correspondence, two ends of the elastic fixing strip are respectively provided with a lock catch, and the axial fixing strip is connected with each group of corresponding locking holes on the rigid backing plate through one elastic fixing strip and the lock catches at the two ends of the elastic fixing strip. When the rigid backing plate is installed, one side edge of the rigid backing plate is pressed and fixedly installed on the backing roller along the axis direction of the backing roller through the axial fixing strip, then the rigid backing plate is rolled and covered on the surface of the backing roller through the rotation of the backing roller, and then the other side edge of the rigid backing plate and the lock holes in the axis fixing strip are respectively locked through the lock catches at the two ends of the elastic fixing strip, so that the rigid backing plate is fixedly locked on the surface of the backing roller. In addition, through holes are respectively arranged on the pad roller and the axial fixing strip corresponding to each fixed mounting hole on the rigid pad plate, and the axial fixing strip, the rigid pad plate and the pad roller are locked and fixed through screws. Wherein each fixed mounting hole on the rigid backing plate is a round hole or a long hole. When used, the principle is the same as in example 1.

Example 3

This embodiment is a high accuracy corrugated paper cutting device based on rigid contact, is applicable to the die cutting processing of large-scale or super large corrugated container board, compares with embodiment 1, and its difference lies in: the rigid backing plate can also be provided with auxiliary mounting holes, and the mounting stability of the rigid backing plate on the backing roller can be further enhanced through the auxiliary mounting holes when the device is used.

As mentioned above, the present invention can be better realized, and the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the present invention; all equivalent changes and modifications made according to the present disclosure are intended to be covered by the scope of the claims of the present invention.