1. The utility model provides a rubber production is with crude rubber bale splitter, includes the frame, be provided with double knives rubber cutting mechanism and actuating mechanism (6) in the frame, double knives rubber cutting mechanism includes two rubber cutters (13), actuating mechanism (6) are used for the drive to cut rubber cutter (13) and carry out the rubber cutting, its characterized in that: the double-cutter rubber cutting mechanism comprises two piston cavities, pistons (26) are arranged in the piston cavities in a sliding mode, the pistons (26) are connected with the two rubber cutting cutters (13) in a one-to-one correspondence mode, and the two piston cavities are communicated.

2. The raw rubber cutting machine for rubber production according to claim 1, characterized in that: the double-cutter rubber cutting mechanism further comprises a movable plate (5) driven by a driving mechanism (6), two supporting bodies (8) are arranged on the movable plate (5), and a piston (26) is arranged in an inner cavity of each supporting body (8).

3. The raw rubber cutting machine for rubber production according to claim 1, characterized in that: and driving liquid is filled in the two piston cavities.

4. The raw rubber cutting machine for rubber production according to claim 2, characterized in that: the inner cavity of the supporting body (8) is a piston cavity, a push rod (11) is inserted into the piston cavity through a piston (26) in a dynamic sealing mode, and the other end of the push rod (11) is connected with a rubber cutter (13) through a cutter holder (12).

5. The raw rubber cutting machine for rubber production according to claim 4, characterized in that: two supporter (8) are connected with fly leaf (5) through a slide (4) respectively, be provided with the spout on fly leaf (5), slide (4) and spout slip joint, two the piston chamber is linked together through sealed tube (9), sealed tube (9) are including intubate (901) and adapter tube (902) that the movive seal pegged graft, when slide (4) slide, two cut the distance between gluey sword (13) and be changed.

6. The raw rubber cutting machine for rubber production according to claim 5, characterized in that: the sliding plate (4) is connected with the movable plate (5) through screws, and a plurality of screw holes (23) matched with the screws are formed in the movable plate (5).

7. The raw rubber cutting machine for rubber production according to claim 2, characterized in that: the support body (8) comprises a cylindrical pipe (801) with a cylindrical inner cavity and a polygonal pipe (802) with a polygonal inner cavity, the piston (26) is connected to the inner cavity of the cylindrical pipe (801) in a dynamic sealing mode, the push rod (11) is inserted into the inner cavity of the polygonal pipe (802) in a sliding mode, and the shape of the push rod (11) is matched with the shape of the inner cavity of the polygonal pipe (802).

8. The raw rubber cutting machine for rubber production according to claim 7, characterized in that: the diameter of the inner cavity of the cylindrical pipe (801) is larger than that of an inscribed circle of the polygonal pipe (802).

9. The raw rubber cutting machine for rubber production according to claim 2, characterized in that: the support body (8) is communicated with a pressure relief device, and the piston cavity can be communicated with the outside through the pressure relief device.

10. The raw rubber cutting machine for rubber production according to claim 9, characterized in that: pressure relief device includes pressure release pipe (19) that is linked together with supporter (8), be provided with the pressure release hole that is linked together with the external world on pressure release pipe (19), pressure release pipe (19) internal dynamic seal is provided with shutoff stopper (29) that are used for sealed pressure release hole, be connected with pressure release spring (30) between the inner wall of shutoff stopper (29) and pressure release pipe (19), work as when the pressure in the sealed chamber constantly increases, shutoff stopper (29) remove, make pressure release hole switches on with the external world.

Background

Raw rubber is a polymer material with high elasticity, is a matrix material for manufacturing rubber products, generally refers to unvulcanized rubber compounds, and comprises natural rubber and synthetic rubber. In rubber production, rubber blocks of natural rubber or synthetic rubber need to be cut into smaller rubber blocks which are easy to process, and a rubber cutting machine is a common device for cutting the rubber blocks of the natural rubber or synthetic rubber and can be divided into a single-blade rubber cutting machine and a multi-blade rubber cutting machine according to the number of sheets of a cutting blade.

If the application number is CN201621003969.5, the publication number is CN206085127U, the name is "a multi-knife rubber cutting machine", and the utility model discloses a multi-knife rubber cutting machine, which comprises a frame, wherein the upper end of the frame is respectively provided with a rubber outlet track, a single-knife rubber cutting station and a double-knife rubber cutting station, a double-station cutter rack is arranged in the double-knife rubber cutting station, two double-station guide rods are slidably arranged on two sides of the double-station cutter rack, the upper parts and the lower parts of the two double-station guide rods are respectively and fixedly provided with a double-station cutter frame and a double-station lower cross beam, a double-station cutter is arranged on the double-station cutter frame, and the double-station cutter rack is positioned under a double-station cutter; the utility model discloses a glue block cutting machine, including a double-cutter glue cutting station, a double-station cutter rack, a double-station glue cutting oil cylinder, a piston rod, a material pushing device, a material pushing motor, a material pushing chain and a material pushing rod, wherein the glue blocking rack is installed on the upper portion of the double-cutter glue cutting station, the double-station glue cutting oil cylinder is installed on the lower end of the double-station cutter rack, the piston rod of the double-station glue cutting oil cylinder is connected on a double-station lower cross beam, the material pushing device is installed on the double-station cutter rack in the middle of the double-cutter glue cutting station, the glue block is manually placed, an operator simultaneously presses down a glue cutting button with both hands, two cutters of a front station descend under the action of a hydraulic cylinder to start glue cutting, the cutters automatically ascend after glue cutting action is completed, and return to an initial position, the material pushing motor is started after the proximity, the pusher is retracted to the home position. Meanwhile, the back station starts to cut the glue, and the glue automatically rises to the initial position after the glue cutting is finished, so that the cutting process of one piece of glue is finished.

The utility model discloses a through the cooperation of double knives surely glue station and single sword surely glue station, make the gluing piece cut littleer, efficiency is higher, but because surely glue sword in long-term use, can produce wearing and tearing, lead to surely glue sword's cutting edge length to shorten, to the double knives surely glue station when cutting glue, two surely glue sword after long-time wearing and tearing, its degree of wear is difficult to keep unanimous, lead to two surely glue sword's length to be different, finally lead to the fact the height difference of two surely glue sword cutting edges, or when installing two surely glue sword, because the tool setting is inaccurate, also can cause the height difference of two surely glue sword cutting edges, when the height of two surely glue sword cutting edges is different, in the in-process of cutting glue at every turn, the lower surely glue sword of cutting edge position easily collides with the cutter rack, make this surely glue sword bear bigger pressure with the higher surely glue sword of cutting sword relatively with the cutting edge position, and the pressure difference value of the two rubber cutters can be continuously increased along with the advance of the rubber cutting process, so that the rubber cutters with lower cutting edge positions are more easily damaged, and the service life is shortened.

Disclosure of Invention

The invention aims to provide a raw rubber cutting machine for rubber production, which aims to overcome the defects in the prior art.

In order to achieve the above purpose, the invention provides the following technical scheme: the utility model provides a rubber production is with crude rubber bale splitter, includes the frame, be provided with double knives rubber cutting mechanism and actuating mechanism in the frame, double knives rubber cutting mechanism includes two rubber cutters, actuating mechanism is used for driving rubber cutter to carry out the rubber cutting, double knives rubber cutting mechanism includes two piston chambers, the piston intracavity slides and is provided with piston, two the piston is connected with two rubber cutter one-to-ones, two the piston chamber is linked together.

Foretell crude rubber bale splitter is used in rubber production, double knives bale splitter constructs still includes the fly leaf by actuating mechanism driven, be provided with two supporters on the fly leaf, every the inner chamber of supporter respectively sets up a piston.

In the raw rubber cutting machine for rubber production, the two piston cavities are filled with the driving liquid.

The crude rubber cutting machine for rubber production is characterized in that the inner cavity of the supporting body is the piston cavity, a push rod is inserted into the piston cavity through a piston dynamic seal, and the other end of the push rod is connected with a rubber cutting knife through a knife holder.

Foretell crude rubber bale splitter for rubber production, two the supporter is connected with the fly leaf through a slide respectively, be provided with the spout on the fly leaf, slide and spout slip joint, two the piston chamber is linked together through the sealed tube, the sealed tube is including the intubate and the adapter tube that the dynamic seal pegged graft, when the slide slides, two the distance between the rubber cutter is changed.

Foretell rubber production is with crude rubber bale splitter, pass through the screw connection between slide and the fly leaf, be provided with a plurality of screws with screw looks adaptation on the fly leaf.

The support body comprises a cylindrical pipe with a cylindrical inner cavity and a polygonal pipe with a polygonal inner cavity, the piston is connected to the inner cavity of the cylindrical pipe in a dynamic sealing mode, the push rod is inserted into the inner cavity of the polygonal pipe in a sliding mode, and the shape of the push rod is matched with that of the inner cavity of the polygonal pipe.

According to the raw rubber bale splitter for rubber production, the diameter of the inner cavity of the cylindrical pipe is larger than that of the inscribed circle of the polygonal pipe.

The raw rubber bale splitter for rubber production is characterized in that the support body is communicated with a pressure relief device, and the pressure relief device can enable the piston cavity to be communicated with the outside.

Foretell rubber production is with crude rubber bale splitter, pressure relief device includes the pressure release pipe that is linked together with the supporter, be provided with the pressure release hole that is linked together with the external world on the pressure release pipe, the internal dynamic seal of pressure release pipe is provided with the shutoff stopper that is used for sealed pressure release hole, be connected with the pressure release spring between the inner wall of shutoff stopper and pressure release pipe, work as when the continuous increase of pressure in the seal chamber, the shutoff stopper removes, makes the pressure release hole switches on with the external world.

In the technical scheme, the two rubber cutters can move in the height direction through the two piston cavities which are communicated with each other, the two rubber cutters can automatically adjust the heights of the two rubber cutters with different blade heights during rubber cutting, and the blade heights of the two rubber cutters are the same, so that pressure values borne by the two rubber cutters during rubber cutting are equal.

Drawings

In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.

FIG. 1 is a schematic structural diagram of a first viewing angle of a raw rubber cutting machine for rubber production according to an embodiment of the present invention;

FIG. 2 is a schematic structural diagram of a second viewing angle of a raw rubber cutting machine for rubber production according to an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of a third viewing angle of a raw rubber cutting machine for rubber production according to an embodiment of the present invention;

FIG. 4 is a schematic structural diagram of the connection of two supporting bodies according to an embodiment of the present invention;

FIG. 5 is a cross-sectional view of the connection of two support bodies provided by an embodiment of the present invention;

FIG. 6 is an enlarged view of part A according to an embodiment of the present invention;

FIG. 7 is a cross-sectional view of a cutter carriage provided in an embodiment of the present invention;

fig. 8 is an enlarged schematic structural diagram of a part B according to an embodiment of the present invention.

Description of reference numerals:

1. a base; 2. a column; 3. a base plate; 4. a slide plate; 5. a movable plate; 6. a drive mechanism; 7. a top plate; 8. a support body; 801. a cylindrical tube; 802. a polygonal tube; 9. a sealing tube; 901. inserting a tube; 902. a bearing pipe; 10. a rubber pad; 11. a push rod; 12. a tool apron; 13. a rubber cutter; 14. a limiting groove; 15. a cutter rack; 16. a card slot; 17. pushing the plate; 18. a roll shaft; 19. a pressure relief pipe; 20. a liquid flow pipe; 21. a vent hole; 22. a liquid collecting tank; 23. a screw hole; 24. grooving; 25. an inclined plate; 26. a piston; 27. a movable groove; 28. a spring; 29. blocking; 30. releasing the pressure spring; 31. a raised ring.

Detailed Description

In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.

As shown in fig. 1 to 8, the raw rubber cutting machine for rubber production provided by the embodiment of the present invention includes a frame, a double-blade rubber cutting mechanism and a driving mechanism 6 are arranged on the frame, the double-blade rubber cutting mechanism includes two rubber cutting blades 13, the driving mechanism 6 is used for driving the rubber cutting blades 13 to cut rubber, the double-blade rubber cutting mechanism includes two piston cavities, pistons 26 are slidably arranged in the piston cavities, the two pistons 26 are connected with the two rubber cutting blades 13 in a one-to-one correspondence manner, and the two piston cavities are communicated.

Specifically, the rubber cutting machine for rubber production provided by the embodiment is used for cutting a large raw rubber into smaller raw rubbers in rubber production, so that the raw rubbers are easier to process. The frame is contacted with the ground and used for supporting and stabilizing the rubber cutting machine, the frame mainly comprises two bases 1 contacted with the ground, a cutter rack 15 is fixedly arranged between the two bases 1, the cutter rack 15 is positioned under a rubber cutting knife 13 and used for placing raw rubber to be cut, an upright post 2 is respectively fixedly arranged on each of the two bases 1, a top plate 7 is fixedly arranged on each of the two upright posts 2, the top plate 7 is used for supporting a driving mechanism 6, the driving mechanism 6 can be an air cylinder or a hydraulic cylinder and used for driving the rubber cutting knife 13 to move up and down to cut the raw rubber, in order to facilitate the movement of the raw rubber, a plurality of roller shafts 18 are rotatably arranged between the two bases 1, the plurality of roller shafts 18 can be arranged at equal intervals, the raw rubber can be placed on the roller shafts 18, when the raw rubber is pushed, the roller shafts 18 rotate, thereby reducing the friction force with the raw rubber and facilitating the movement of the raw rubber, two rubber cutting knives 13 are respectively connected with pistons, the two pistons 26 are respectively arranged in the two mutually communicated piston cavities in a sliding and sealing manner, and the two rubber cutters 13 can be automatically adjusted in height through the two pistons 26 and the two communicated piston cavities, so that the heights of the cutting edges of the two rubber cutters 13 are the same. The operating principle of the raw rubber cutting machine for rubber production in this embodiment is that the raw rubber to be cut can be placed on the roller shaft 18, then the raw rubber is pushed towards the rubber cutting knives 13 to move along the roller shaft 18 until the raw rubber moves onto the cutter rack 15, then the driving mechanism 6 drives the double-cutter rubber cutting mechanism to move downwards, so that the two rubber cutting knives 13 move downwards together to cut the raw rubber, if the heights of the cutting edges of the two rubber cutting knives 13 are not consistent, the rubber cutting knife 13 with the lower height of the cutting edge contacts the raw rubber firstly, when the upward pressure value applied to the rubber cutting knife 13 is greater than the frictional resistance between the piston 26 and the piston cavity (the frictional resistance between the piston 26 and the piston cavity is small, and the frictional resistance is not enough to cause the damage of the cutting edge of the rubber cutting knife 13), the piston 26 connected with the rubber cutting knife 13 can move upwards, and the other piston 26 is driven to move downwards by the piston cavity, finally, the rubber cutter 13 with the higher cutting edge height is driven to move downwards until the cutting edges of the two rubber cutters 13 are identical in height, or the cutting edges of the two rubber cutters 13 are all in contact with the cutter rack 15, or the cutting edges of the two rubber cutters 13 are not in contact with the cutter rack 15, when the cutting edges of the two rubber cutters 13 are identical in height, the pressure values borne by the two rubber cutters 13 are equal, no pressure difference exists, after one-time rubber cutting is completed, the driving mechanism 6 drives the double-cutter rubber cutting mechanism to move upwards, so that the two rubber cutters 13 are lifted to the initial position, then raw rubber is continuously pushed, raw rubber which is not cut is extruded from the cutter rack 15, and next-time rubber cutting is performed again. In the prior art, when the heights of the cutting edges of the two rubber cutters are different, the rubber cutter 13 with the lower cutting edge position is easy to collide with the cutter rack in the rubber cutting process at each time, so that the rubber cutter 13 bears larger pressure relative to the rubber cutter 13 with the higher cutting edge position, the pressure difference value of the two rubber cutters 13 is increased along with the propulsion of the rubber cutting process, and the rubber cutter 13 with the lower cutting edge position is more easily damaged in the past. The innovation point of the invention is that the double-cutter rubber cutting mechanism is optimized, two piston cavities and two pistons 26 respectively positioned in the two piston cavities are added, so that the height of the two rubber cutting knives 13 with different cutting edge heights can be automatically adjusted in the rubber cutting process, and the pressure values born by the two rubber cutting knives 13 can be equal.

In this embodiment, through setting up two piston chambers that communicate each other, make two rubber cutter 13 can remove each other on the direction of height, can make two rubber cutter 13 that the cutting edge height is different carry out height control automatically when cutting gluey, make two cutting edge height the same of rubber cutter 13, thereby make two pressure values that bear when cutting gluey 13 and cutting gluey equal, compared with the prior art, when cutting gluey, cutting edge height lower rubber cutter 13 can drive the higher rubber cutter 13 relative movement of cutting edge height, make two pressure values that rubber cutter 13 bore equal, there is not pressure differential, thereby can not cause one of them rubber cutter 13 to bear the bigger pressure value and the condition of changing the damage appears, can not reduce the life of this rubber cutter 13.

In this embodiment, two base 1's opposite face all is provided with draw-in groove 16, sliding connection has push pedal 17 between two draw-in grooves 16, push pedal 17 highly is higher than cutter rack 15's height, can apply external force to push pedal 17, make push pedal 17 slide around carrying out along two draw-in grooves 16, when push pedal 17 slides to the direction of cutting gluey sword 13, can promote crude rubber, make crude rubber move to cutting gluey sword 13 under, also can continue to promote crude rubber, the crude rubber that will cut shifts out from cutter rack 15, utilize push pedal 17 can improve the security of hand when the operation, can not wounded by cutting gluey sword 13 mistake.

In this embodiment, the double-blade rubber cutting mechanism further includes a movable plate 5 driven by the driving mechanism 6, two supporting bodies 8 are disposed on the movable plate 5, and an inner cavity of each supporting body 8 is provided with a piston 26. The movable plate 5 is located below the top plate 7 and is fixedly connected to the output end of the driving mechanism 6, the two supporting bodies 8 can be connected through the movable plate 5, the driving mechanism 6 can simultaneously move the two supporting bodies 8 up and down, so that the two rubber cutters 13 can simultaneously move up and down to cut rubber, and the supporting bodies 8 are carriers of the piston 26.

In this embodiment, the opposite surfaces of the two columns 2 are provided with the limiting grooves 14, the two side surfaces of the movable plate 5 are fixedly provided with sliding blocks, the two sliding blocks are respectively connected with the two limiting grooves 14 in a sliding manner, when the driving mechanism 6 drives the movable plate 5 to move up and down, the movable plate 5 can be limited by the sliding connections of the two sliding blocks and the two limiting grooves 14, and the stability of the movable plate 5 during moving up and down is improved.

Because the piston cavity is sealed by the two pistons 26, no matter gas or liquid is in the piston cavity, the piston 26 can move in the piston cavity, and the automatic height adjustment of the two rubber cutters 13 is completed, so that the pressure values borne by the two rubber cutters are equal; meanwhile, since the piston 26 generates heat due to friction while moving in the piston chamber, the heat can be cooled by the lubricating oil.

In this embodiment, the inner cavity of the supporting body 8 is a piston cavity, a push rod 11 is inserted into the piston cavity through a piston 26 in a dynamic seal manner, and the other end of the push rod 11 is connected with the rubber cutter 13 through a cutter holder 12. One end and piston 26 fixed connection of push rod 11, the other end extend to the outside in piston chamber and with blade holder 12 fixed connection, blade holder 12 is used for fixed rubber cutter 13 (blade holder 12 is prior art with rubber cutter 13's fixed mode, and it is not repeated here), when the lower rubber cutter 13 that cuts in blade position receives upwards pressure after upwards moving up, transmit this pressure value for corresponding piston 26 through push rod 11 on to drive piston 26 and slide in the piston chamber.

Furthermore, two supporting bodies 8 are respectively connected with a movable plate 5 through a sliding plate 4, a sliding groove is arranged on the movable plate 5, the sliding plate 4 is in sliding clamping connection with the sliding groove, two piston cavities are communicated through a sealing pipe 9, the sealing pipe 9 comprises an insertion pipe 901 and a receiving pipe 902 which are in dynamic sealing insertion connection, and when the sliding plate 4 slides, the distance between two rubber cutting knives 13 is changed. Utilize the slip joint of slide 4 and spout, can make slide 4 slide along the spout, and make slide 4 can not break away from the spout because the joint, intubate 901 and the adapter 902 that utilize the dynamic seal to peg graft, can make the length of sealed tube 9 obtain changing, when removing one of them slide 4, this slide 4 will drive and move rather than corresponding supporter 8 of being connected and surely glue sword 13, thereby can adjust the distance between two surely glue sword 13, realize carrying out the cutting of different size to crude rubber, improve this bale splitter's practicality, and among the prior art, the distance between two surely glue sword 13 is fixed, can not adjust, flexibility and practicality are relatively poor.

Because the sliding plate 4 and the chute are in sliding clamping connection, when the rubber cutting is performed, the rubber cutting knife 13 needs to be ensured to be fixed, so that the sliding plate 4 needs to be fixed, in a preferred embodiment, the sliding plate 4 and the movable plate 5 are connected through screws, and the movable plate 5 is provided with a plurality of screw holes 23 matched with the screws. The screw is quantity at least two to be located the both sides of slide 4 respectively, and a plurality of screw 23 are located the both sides of fly leaf 5 respectively, and is corresponding with the position of the screw on slide 4, and after slide 4 moved suitable position, pass slide 4 and screw thread grafting to the screw 23 that corresponds with the screw, can realize the fixed to slide 4, thereby guarantee the fastness of rubber cutter 13.

Still further, the diameters of the two ports of the adapting tube 902 are different, the diameter of the port at one end inserted into the insertion tube 901 is smaller than that of the port at the other end, a protruding ring 31 is formed on the outer surface of the insertion tube 901, the protruding ring 31 is located in the inner cavity of the adapting tube 902, and the diameter of the protruding ring 31 is larger than that of the port at one end inserted into the adapting tube 902 and the insertion tube 901, so that the insertion tube 901 cannot be separated from the adapting tube 902 under the action of the protruding ring 31, and when the length of the sealing tube 9 is changed, the stability of the sealing tube 9 can be ensured.

Meanwhile, the rubber pad 10 is fixedly installed on the insertion tube 901, the rubber pad 10 is located in the inner cavity of the adapting tube 902, the outer surface of the rubber pad 10 is always in compression connection with the inner wall of the adapting tube 902, the sealing performance of the connection between the insertion tube 901 and the adapting tube 902 can be guaranteed through the rubber pad 10, and the driving liquid is prevented from leaking from the connection position of the insertion tube 901 and the adapting tube 902.

In this embodiment, the support body 8 includes a cylindrical tube 801 having a cylindrical inner cavity and a polygonal tube 802 having a polygonal inner cavity, the piston 26 is connected to the inner cavity of the cylindrical tube 801 in a dynamic seal manner, the push rod 11 is inserted into the inner cavity of the polygonal tube 802 in a sliding manner, and the shape of the push rod 11 is adapted to the shape of the inner cavity of the polygonal tube 802. Because cylinder 801's inner chamber is the cylinder, can make piston 26's surface closely laminate with cylinder 801's inner chamber completely more conveniently, guarantee sealed effect, and multilateral pipe 802's inner chamber is the multilateral body, and the shape of push rod 11 and the shape looks adaptation of multilateral pipe 802 inner chamber, make push rod 11 can not rotate and rock on the horizontal direction, can only reciprocate, thereby can ensure two in-process of cutting gluey sword 13 using, can not take place the rotation on the horizontal direction and rock, improve the stability and the fastness of cutting gluey sword 13.

Meanwhile, it is required to ensure that the push rod 11 cannot be separated from the piston cavity, that is, it is ensured that the rubber cutter 13 cannot be separated from the support body 8, and therefore, in this embodiment, further, the diameter of the inner cavity of the cylindrical tube 801 is greater than the diameter of the inscribed circle of the polygonal tube 802, so that the diameter of the piston 26 is greater than the diameter of the inscribed circle of the polygonal tube 802, and thus the piston 26 is not easy to slide out of the inner cavity of the cylindrical tube 801, and it is ensured that the push rod 11 cannot be separated from the piston cavity.

In order to better protect the rubber cutter 13 from being damaged, in this embodiment, a pressure relief device is further communicated with the supporting body 8, and the pressure relief device can enable the piston cavity to be communicated with the outside. The upward maximum pressure value that surely glue sword 13 will bear is set for to accessible pressure relief device, and when reaching the set pressure value, pressure relief device just can make piston chamber and external world be linked together, makes the pressure value in the piston chamber reduce rapidly to can make surely glue sword 13 upwards remove, cause the pressure value that surely glue sword 13 received to reduce rapidly, thereby realize the further protection to surely glue sword 13.

In a preferred embodiment, the pressure relief device comprises a pressure relief pipe 19 communicated with the support body 8, a pressure relief hole communicated with the outside is formed in the pressure relief pipe 19, a plugging plug 29 for sealing the pressure relief hole is arranged in the pressure relief pipe 19 in a dynamic seal manner, a pressure relief spring 30 is connected between the plugging plug 29 and the inner wall of the pressure relief pipe 19, and when the pressure in the sealing cavity is continuously increased, the plugging plug 29 moves to enable the pressure relief hole to be communicated with the outside. The plug 29 seals the pressure relief hole or allows the pressure relief hole to communicate with the outside, and when the pressure relief hole communicates with the outside, the piston cavity also communicates with the outside. When the pressure relief device is used, when the upward pressure value received by the rubber cutter 13 is increased, the pressure value in the piston cavity is increased, the sealing plug 29 is pushed to slide to one side of the pressure relief spring 30 under the action of driving liquid, so that the pressure relief spring 30 is compressed and deformed, when the positions of the sealing plug 29 and the pressure relief hole are staggered, the pressure relief hole is communicated with the outside, so that the piston cavity is communicated with the outside, the driving liquid in the piston cavity flows out of the pressure relief hole, the pressure value in the piston cavity is reduced, and the rubber cutter 13 can be better prevented from being damaged.

Still further, fixedly connected with liquid flow tube 20 in the pressure release hole, detachably installs collection liquid jar 22 on liquid flow tube 20, is provided with the air vent 21 with external intercommunication on the collection liquid jar 22, and when the seal chamber switched on with the external world, the actuating liquid will flow into collection liquid jar 22. The vent hole 21 is used for enabling the pressure value in the inner cavity of the liquid collecting tank 22 to be the same as the outside, and when the driving liquid flows out of the pressure relief hole, the driving liquid can directly flow into the liquid collecting tank 22, so that the driving liquid is prevented from flowing to the frame, raw rubber or the ground, the waste of the driving liquid is avoided, and the interference to the operating environment is avoided.

In this embodiment, in order to protect the cutting edge of the rubber cutter 13 from being damaged, the top of the cutter rack 15 is provided with a plurality of cutting grooves 24, the positions of the cutting grooves 24 correspond to the positions of the screw holes 23, when the rubber cutter 13 is moved to enable the cutting edge to be located right above the cutting grooves 24, the screws on the sliding plate 4 just correspond to the screw holes 23, and the sliding plate 4 can be fixed, so that the purpose of fixing the moved rubber cutter 13 is achieved. The cutting groove 24 is utilized to ensure that the cutting edge of the rubber cutter 13 directly enters the cutting groove 24 after the rubber cutter 13 completely cuts the raw rubber, thereby avoiding the direct contact between the cutting edge and the cutter rack 15 and protecting the cutting edge from being damaged.

However, because the raw rubber is made of a relatively soft material, when the cutting edge of the rubber cutter 13 is not in contact with the cutter rack 15, the raw rubber is not sufficiently hard and lacks support, and the situation that the raw rubber cannot be completely cut off by the rubber cutter 13 is easily caused. To this end, in this embodiment, there are further two movable grooves 27 correspondingly disposed on two side surfaces of the cutting groove 24, each movable groove 27 is slidably connected with the backing plate 3 through a spring 28, in a natural state, a space is formed between the two backing plates 3, the length of the space is 1-2mm, so that the blade of the rubber cutter 13 can smoothly pass through the space without colliding with the backing plate 3, when the rubber cutter 13 cuts raw rubber, the blade of the rubber cutter 13 is located right above the space, and the two backing plates 3 can support the raw rubber, and when the blade of the rubber cutter 13 passes through the space, the soft raw rubber can be cut off more easily under the supporting action of the two backing plates 3; the blade does not collide with the backing plate 3, so that the blade can be protected from being damaged; meanwhile, a space is reserved between the bottom surfaces of the backing plates 3 and the bottom surfaces of the cutting grooves 28, when the rubber cutter 13 penetrates through the space between the two backing plates 3 and continues to move downwards, the two backing plates 3 can respectively move outwards along with the continuous increase of the thickness of the rubber cutter 13, the two springs 28 are compressed, and therefore the rubber cutter 13 and the backing plates 3 cannot collide with each other with high strength, and the rubber cutter 13 can be further protected from being damaged.

Because of the existence of the cutting groove 24, when the raw rubber moves on the cutter rack 15, the bottom side line position of the raw rubber is easy to be clamped into the cutting groove 24 under the action of the self gravity of the raw rubber, so that the smooth movement of the raw rubber on the cutter rack 15 is influenced, and further, a plurality of inclined plates 25 are embedded and installed on the cutter rack 15, the inclined plates 25 move from low to high in the raw rubber moving direction, when the raw rubber moves, the bottom side line of the raw rubber firstly moves to the inclined plates 25, the height of the bottom side line of the raw rubber is continuously increased along with the gradient of the inclined plates 25, and the bottom side line of the raw rubber with the increased bottom side line height cannot be clamped into the cutting groove 28 in the moving process, so that the raw rubber can smoothly move on the cutter rack 15.

While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.