1. A winding machine for waste coiled materials is characterized by comprising

The coil belt conveying device comprises a feeding port (61) and a discharging port (62), wherein the connecting line of the feeding port (61) and the discharging port (62) forms a coil belt conveying channel (6), and material pressing rollers (2) and a material clamping mechanism (1) which are arranged at intervals along the conveying direction of the coil belt;

the material clamping mechanism (1) comprises a reel (11) with the axis vertical to the conveying direction of the coiled material belt, a clamp used for fixing the end part of the coiled material belt is arranged on the reel (11), and the reel (11) can rotate to wind the coiled material belt;

the material pressing roller (2) is connected and assembled with a transmission mechanism (5), the transmission mechanism (5) can change the position of the material pressing roller (2) in the vertical direction, and a wheel shaft of the material pressing roller (2) is perpendicular to the conveying direction of the coiled material belt and is used for pressing the coiled material belt.

2. The waste coil winder as claimed in claim 1, further comprising a frame (3) and two vertical columns (4) fixed on the top of the frame (3) and extending vertically and upwardly, wherein the arrangement direction of the two vertical columns (4) is perpendicular to the direction of the coil belt conveying channel (6), and the two vertical columns (4) are arranged on two sides of the coil belt conveying channel (6) at intervals; the quantity of drive mechanism (5) is two, locates two separately on stand (4), two drive mechanism (5) support material pressing gyro wheel (2) jointly in the interval of two stands (4).

3. The waste coil winder as claimed in claim 2, wherein the transmission mechanism (5) comprises a transmission cylinder (51), a swing rod (53) and a roller support rod (55) fixedly connected with the swing rod (53); the cylinder body of the transmission cylinder (51) is rotatably arranged on the upright post (4) through a cylinder hinge seat (52), the swing rod (53) is rotatably arranged on the upright post (4) through a swing rod hinge seat (54), and a telescopic rod of the cylinder is hinged with the swing rod (53) to drive the swing rod (53) to rotate; one end of the roller supporting rod (55) is fixedly connected with the swing rod (53), and the other end of the roller supporting rod is connected with the pressing roller (2).

4. The waste coil winder as claimed in claim 3, wherein the angle between the swing link (53) and the telescopic rod of the cylinder is 90 ° when the swing link (53) is located in the middle of its swing motion.

5. The waste coil winder as claimed in claim 2, characterized in that the number of the material clamping mechanisms (1) is two, and the two material clamping mechanisms are symmetrically arranged on two sides of the coil belt conveying channel (6); the material clamping mechanism (1) comprises a material clamping mechanism (1) main body with a scroll (11) and a material clamping movement mechanism for driving the material clamping mechanism (1) main body to translate, and the two scrolls (11) respectively arranged on the two material clamping mechanisms (1) can be in butt joint or separated under the driving of the material clamping movement mechanism; a material collecting opening communicated with the material outlet (62) is arranged under the scroll (11).

6. The waste coil winder as claimed in claim 5, wherein the material clamping movement mechanism comprises a material clamping cylinder (13) and a cylinder guide rail (14), the main body of the material clamping mechanism (1) is arranged on the material clamping cylinder (13) in a bearing manner, and the cylinder guide rail (14) is laid on the top of the frame (3).

7. The waste coil winder as claimed in claim 5, wherein the material clamping mechanism (1) body further comprises a material clamping motor (12) for driving the reel (11) to rotate; the reel (11) is provided with a reel main body section (111) and a conical reel section (112), the reel main body section (111) is connected and assembled with the material clamping motor (12), the conical reel section (112) is fixedly connected with the reel main body section (111), and the shaft diameter of the conical reel section (112) is gradually reduced along the direction far away from the reel main body section (111).

8. The waste coil winder as claimed in claim 7, wherein an air passage is provided in the main body section (111) of the winding shaft, and the main body section (111) of the winding shaft is provided with a plurality of air suction ports communicated with the air passage.

9. The waste web winder of claim 8, wherein each of said suction ports extends from the junction of the tapered reel section (112) with the reel body section (111) in a direction away from the tapered reel section (112); the suction ports are all arranged on the same half arc surface of the spool (11).

10. The waste coil winder as claimed in claim 8, wherein the material clamping mechanism (1) is further provided with an infrared distance measuring module for detecting the position coordinates of the coil strip wound on the reel (11).

Background

Metal profiles such as aluminum and steel produce a large amount of scrap during processing, including scrap coil stock. The waste coiled material is the redundant part cut off in the side cut technology in the metal processing process. If not discharged in time, or handled, the waste coil stack can cause significant interference to the production line and production flow.

In the prior art, the collection and cleaning automation degree of the waste coiled materials is low. Because the specification of coiled material is different, and the shape is different, and the waste material is difficult to realize artifical clearance, directly simply piles up the clearance waste material, and is inefficient.

In order to improve quality and reduce consumption, in the technical field of metal processing equipment, equipment capable of assisting in recovering metal cutting waste materials is urgently needed.

Disclosure of Invention

Therefore, the application provides an abandonment coiled material rolling machine. The waste materials generated in the processing process of the metal materials, particularly the aluminum materials, can be treated to facilitate the collection and transportation of the waste materials. The scheme solves the problems by the following technical points:

a winding machine for waste coiled materials comprises a feeding port and a discharging port, wherein the feeding port and the discharging port are connected to form a coiled material belt conveying channel, and material pressing rollers and material clamping mechanisms are arranged at intervals along the conveying direction of the coiled material belt; the material clamping mechanism comprises a reel with the axis vertical to the conveying direction of the coiled material belt, a clamp used for fixing the end part of the coiled material belt is arranged on the reel, and the reel can rotate to wind the coiled material belt; the material pressing roller is connected and assembled with a transmission mechanism, the transmission mechanism can change the position of the material pressing roller in the vertical direction, and a wheel shaft of the material pressing roller is perpendicular to the conveying direction of the coiled material belt and used for pressing the coiled material belt.

As described above, the present application provides a waste coil winder. The device mainly comprises a coiled material belt conveying channel with a feeding port and a discharging port, a pressing roller and a clamping mechanism. In practical use, after the waste aluminum strips are cut, the finished product parts of the aluminum materials are pulled elsewhere to be made into aluminum coils, and the waste aluminum strips are pulled from the feeding ports to enter the coiled material strip conveying channel of the device. The end of the waste web is secured to the spool by a clamp on the spool. Because the material pressing rollers and the material clamping mechanisms are arranged at intervals along the conveying direction of the coiled material belt, the material pressing rollers are positioned between the scroll and the feeding port. After the coiled material belt is straightened between the reel and the feeding port, the transmission mechanism is used for driving the material pressing roller to apply external force to the coiled material belt close to the abandoned coiled material belt, and the reel capable of rotating drives the abandoned coiled material belt to be wound. Because of the support of pressing the material gyro wheel and holding to compress tightly, abandonment coiled material area produces material deformation, and under the winding of spool drives, abandonment coiled material becomes the small-size waste material book that can keep comparatively permanent form. Subsequently, the spool is moved to be drawn out of the web transport path, or the web-like waste web dropped onto the spool is scraped using the moving shutter, and the formed, small-sized waste web is dropped and discharged from the discharge port. The aluminum material treated by the device has the advantages of more consistent size of waste materials, compact volume and easy collection and transportation for treatment.

The further technical scheme is as follows:

the waste coiled material winding machine also comprises a rack and two upright posts which are fixed at the top of the rack and vertically extend upwards, the arrangement direction of the two upright posts is perpendicular to the direction of the coiled material belt conveying channel, and the two upright posts are arranged at two sides of the coiled material belt conveying channel at intervals; the quantity of drive mechanism is two, locates two separately on the stand, two drive mechanism support jointly and press the material gyro wheel in the interval of two stands. The technical characteristics define the main structure of the winder. The frame extends in the horizontal plane and is the bearing foundation of the main structure body of the winding machine. The upright post which is fixedly arranged on the rack and extends upwards is mainly used for installing the pressing roller, and the pressing roller can move up and down under the driving of the transmission mechanism, so that the height difference between the upright post and the rack provides a movement space for the up-and-down movement of the pressing roller. In addition, the quantity of stand is two, and drive mechanism sets up respectively on two stands, and the drive mechanism on two stands respectively supports jointly and presses the material gyro wheel and reciprocate in the interval of two stands, and two drive mechanism drive jointly presses the material gyro wheel for press the motion of material gyro wheel more stable. Meanwhile, the coiled material belt conveying channel is arranged between the two stand columns, so that an operation area for the coiled material belt to deform by applying force to the coiled material belt by the pressing roller is also arranged between the two stand columns, the counter force generated by the pressing operation is uniformly borne by the two stand columns, and compared with the stand column, the use strength of the winding machine is improved by the arrangement of the two stand columns. And, two stand settings are in the both sides in operation district, and the respective shape size of two stands of reasonable setting can utilize the stand to enclose the operation district and close the isolation and become comparatively sealed solitary space according to actual behavior, avoids the external world to compress tightly the operation and produce the influence.

The transmission mechanism comprises a transmission cylinder, a swing rod and a roller supporting rod fixedly connected with the swing rod; the cylinder body of the transmission cylinder is rotatably arranged on the upright post through a cylinder hinged seat, the oscillating bar is rotatably arranged on the upright post through an oscillating bar hinged seat, and an expansion link of the cylinder is hinged with the oscillating bar to drive the oscillating bar to rotate; one end of the roller supporting rod is fixedly connected with the swing rod, and the other end of the roller supporting rod is connected with the pressing roller. The technical characteristics specifically limit the structure of the transmission mechanism and the connection relationship of the structures. The cylinder body of the cylinder drives the telescopic rod to stretch and retract so as to change the shape of the triangle, and the oscillating rod rotates relative to the oscillating rod hinge seat. As the swing rod swings, the roller supporting rod fixedly connected with the swing rod drives the pressing roller to move, and then the pressing roller is driven to move up and down. When the pressing roller does not work, the pressing roller is lifted, and when the pressing roller works, the pressing roller is pressed down again.

When the swing rod is located in the middle of the swing motion of the swing rod, the angle between the swing rod and the telescopic rod of the air cylinder is 90 degrees. The characteristic ensures that the swing motion track of the swing rod is regular and controllable.

The two material clamping mechanisms are symmetrically arranged on two sides of the coiled material belt conveying channel; the material clamping mechanism comprises a material clamping mechanism main body with a scroll and a material clamping movement mechanism for driving the material clamping mechanism main body to move horizontally, and the two scrolls of the two material clamping mechanisms can be butted or separated under the driving of the material clamping movement mechanism; and a material collecting port communicated with the discharge port is arranged right below the scroll. Under the drive of the material clamping movement mechanism, the two symmetrically arranged material clamping mechanisms are butted in the coiled material belt conveying channel, and coiled materials are wound on the two reels at the crossing and butting position. After the winding shaping operation was accomplished, two spools kept away from each other, and the waste material book falls down and falls into in the aggregate opening and then through this rolling machine of discharge gate discharge.

The material clamping movement mechanism comprises a material clamping cylinder and a cylinder guide rail, the main body of the material clamping mechanism is arranged on the material clamping cylinder in a bearing mode, and the cylinder guide rail is laid on the top of the rack. The technical characteristics limit the structural characteristics of the material clamping movement mechanism, and the material clamping cylinder and the cylinder guide rail drive the material clamping mechanism main body, so that the reaction is fast and the movement is stable.

In order to facilitate the waste coil to fall off from the reel, the material clamping mechanism main body also comprises a material clamping motor for driving the reel to rotate; the reel is provided with a reel main body section and a conical reel section, the reel main body section is connected and assembled with the material clamping motor, the conical reel section is fixedly connected with the reel main body section, and the diameter of the conical reel section is gradually reduced along the direction far away from the reel main body section. The scrap coil tends to slip off the tapered ramp surface of the tapered spool section.

In order to control the dropping position of the waste material roll, an air passage is arranged in the reel main body section, and a plurality of air suction ports communicated with the air passage are formed in the reel main body section. In particular, the abutment point of the two reels is located in the middle of the transport path of the web of material, and if not disposed of, the waste rolls tend to fall near the middle of the path after separation of the two reels. After the air suction port is arranged on the main body section of the scroll of the device, the air suction port of the scroll on one side of the moving target position of the waste roll is opened before the scroll is separated, so that the waste roll is tightly and firmly adsorbed on the scroll, then the two scrolls are separated, and when the material clamping mechanism on which the scroll is located moves to the position near the target position. The suction port stops sucking, and because the reel is not butted, a part of the waste coiled material is suspended at the moment, and under the action of gravity of the suspended section, the waste coiled material inclines and then falls to a target position.

Each air suction port extends from the joint of the conical scroll section and the scroll main body section to the direction far away from the conical scroll section; the suction ports are all arranged on the same half arc surface of the spool. In this technical characteristic, the induction port begins to extend from the joint of two reel sections, therefore, after the induction port adsorbs waste coiled material, the waste coiled material of keeping away from reel main part section is all unsettled from the joint of two reel sections, and the unsettled section length of waste coiled material is changeed the slope and is fallen. The air suction ports are all arranged on the same semi-arc surface of the scroll, so that resultant force of adsorption force generated by each air suction port faces to one direction, and the adsorption stability is improved.

For improving the device to the moving position accuracy of coiled material area or waste coiled material, set up to, press from both sides material mechanism and still be equipped with infrared ranging module for detect the position coordinate of the winding coiled material area on the spool.

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

the invention is scientific and reasonable. According to the winding machine for the waste coiled materials, the reel of the material clamping mechanism of the winding machine is matched with the material pressing roller, so that the waste coiled materials can be wound and formed, and the formed waste coiled materials are compact and regular in structure and easy to store and transport. Two reels that have of this device are provided with induction port and air flue, can control and drive waste coiled material and remove the collection that falls to the place of regulation, have further promoted the clean and tidy degree that waste coiled material accomodate.

Drawings

The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the principles of the invention. In the drawings:

FIG. 1 is a front view of the present invention;

FIG. 2 is a side view of the present invention;

FIG. 3 is a schematic view of the transmission mechanism of the present invention;

in the figure: 1. a material clamping mechanism; 11. a reel; 111. a spool body section; 112. a conical spool section; 12. a material clamping motor; 13. a material clamping cylinder; 14. a cylinder guide rail; 2. pressing rollers; 3. a frame; 4. a column; 5. a transmission mechanism; 51. a transmission cylinder; 52. a cylinder hinged seat; 53. a swing rod; 54. the swing rod is hinged with the base; 55. a roller support rod; 6. a coil tape transport channel; 61. a feeding port; 62. and (4) a discharge port.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples and accompanying drawings, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not meant to limit the present invention.

Example 1:

as shown in fig. 1-2, a waste coil winder comprises a feeding port 61 and a discharging port 62, wherein the feeding port 61 and the discharging port 62 are connected to form a coil belt conveying channel 6, and pressing rollers 2 and a clamping mechanism 1 which are arranged at intervals along the conveying direction of the coil belt; the material clamping mechanism 1 comprises a reel 11, the axis of which is vertical to the conveying direction of the coiled material belt, a clamp for fixing the end part of the coiled material belt is arranged on the reel 11, and the reel 11 can rotate to wind the coiled material belt; the material pressing roller 2 is connected and assembled with a transmission mechanism 5, the transmission mechanism 5 can change the position of the material pressing roller 2 in the vertical direction, and a wheel shaft of the material pressing roller 2 is perpendicular to the conveying direction of the coiled material belt and used for pressing the coiled material belt tightly.

As described above, the present application provides a waste coil winder. The device mainly comprises a coiled material belt conveying channel 6 with a feeding port 61 and a discharging port 62, a pressing roller 2 and a clamping mechanism 1. In actual use, after cutting the scrap aluminum strip, the finished portion of the aluminum material is drawn elsewhere to form an aluminum coil, and the scrap aluminum strip is drawn from the feed opening 61 into the coil strip transport channel 6 of the apparatus. The end of the waste web is secured to the spool 11 by a clamp on the spool 11. Because the pressing rollers 2 and the clamping mechanisms 1 are arranged at intervals along the conveying direction of the coiled material belt, the pressing rollers 2 are positioned between the reel 11 and the feeding port 61. After the coil strip is straightened between the reel 11 and the feeding port 61, the transmission mechanism 5 is used for driving the pressing roller 2 to be close to the waste coil strip to apply external force to the waste coil strip, and the reel 11 capable of rotating drives the waste coil strip to be wound. Because of pressing the support of material gyro wheel 2 and pressing tightly, abandonment coiled material area produces material deformation, and under the winding of spool 11 drives, abandonment coiled material becomes the small-size waste material book that can keep comparatively permanent form. Subsequently, the spool 11 is moved to be drawn out of the web transport path 6, or the web-shaped waste web scraped off the spool 11 by the moving shutter is dropped and discharged from the discharge port 62 as a small-sized waste web roll after being formed. The aluminum material treated by the device has the advantages of more consistent size of waste materials, compact volume and easy collection and transportation for treatment.

Example 2:

as shown in fig. 3, the present embodiment is further defined on the basis of embodiment 1:

the waste coiled material winding machine further comprises a rack 3 and two upright posts 4 fixed at the top of the rack 3 and extending vertically upwards, wherein the arrangement direction of the two upright posts 4 is perpendicular to the direction of the coiled material belt conveying channel 6, and the two upright posts 4 are arranged at two sides of the coiled material belt conveying channel 6 at intervals; the number of the transmission mechanisms 5 is two, the transmission mechanisms are respectively arranged on the two upright posts 4, and the two transmission mechanisms 5 jointly support the material pressing roller 2 in the interval between the two upright posts 4. The technical characteristics define the main structure of the winder. The frame 3 extends in the horizontal plane, and the frame 3 is a bearing foundation of the main structure body of the winding machine. The upright post 4 which is fixedly arranged on the frame 3 and extends upwards is mainly used for installing the pressing roller 2, and the pressing roller 2 can move up and down under the driving of the transmission mechanism 5, so that the height difference between the upright post 4 and the frame 3 provides a movement space for the up-and-down movement of the pressing roller 2. In addition, the number of the stand columns 4 is two, the transmission mechanisms 5 are respectively arranged on the two stand columns 4, the transmission mechanisms 5 on the two stand columns 4 respectively support the pressing roller 2 to move up and down in the interval between the two stand columns 4, and the two transmission mechanisms 5 drive the pressing roller 2 together, so that the movement of the pressing roller 2 is more stable. Simultaneously, because coiled material area transfer passage 6 is between two stands 4, consequently press material gyro wheel 2 to apply force to the coiled material area and make its operating area of deformation also between two stands 4, the counter-force that compresses tightly the operation and produce is evenly undertaken by two stands 4, compares and sets up a stand 4, and the use intensity of this rolling machine has been improved in setting up of two stands 4. Moreover, two stands 4 set up the both sides in the operation district, and the respective shape size of two stands 4 sets up rationally, according to actual behavior, can utilize stand 4 to enclose the operation district and close the isolation and become comparatively sealed solitary space, avoids the external world to compress tightly the operation and produce the influence.

The transmission mechanism 5 comprises a transmission cylinder 51, a swing rod 53 and a roller support rod 55 fixedly connected with the swing rod 53; the cylinder body of the transmission cylinder 51 is rotatably arranged on the upright post 4 through a cylinder hinge seat 52, the swing rod 53 is rotatably arranged on the upright post 4 through a swing rod hinge seat 54, and the telescopic rod of the cylinder is hinged with the swing rod 53 to drive the swing rod 53 to rotate; one end of the roller supporting rod 55 is fixedly connected with the swing rod 53, and the other end of the roller supporting rod is connected with the pressing roller 2. The technical characteristics specifically define the structure of the transmission mechanism 5 and the connection relationship of the structures. The cylinder hinged seat 52, the swing rod hinged seat 54 and the hinged point of the telescopic rod and the swing rod 53 of the cylinder form a triangle, three sides of the triangle are respectively a connecting line of the two hinged seats, the swing rod 53 and the cylinder, the cylinder body of the cylinder drives the telescopic rod to stretch and retract, the shape of the triangle is changed, and the swing rod 53 rotates relative to the swing rod hinged seat 54. Due to the swinging of the swing rod 53, the roller support rod 55 fixedly connected with the swing rod 53 also drives the pressing roller 2 to move, and further drives the pressing roller 2 to move up and down. When the device does not work, the pressing roller 2 is lifted, and when the device works, the pressing roller 2 is pressed down again.

When the swing rod 53 is located in the middle of the swing motion, the angle between the swing rod 53 and the telescopic rod of the air cylinder is 90 degrees. This feature makes the swing motion trajectory of the swing lever 53 regular and controllable.

The number of the material clamping mechanisms 1 is two, and the two material clamping mechanisms are symmetrically arranged on two sides of the coiled material belt conveying channel 6; the material clamping mechanism 1 comprises a material clamping mechanism 1 main body with a scroll 11 and a material clamping movement mechanism for driving the material clamping mechanism 1 main body to translate, and the two scrolls 11 respectively arranged on the two material clamping mechanisms 1 can be butted or separated under the driving of the material clamping movement mechanism; a material collecting opening communicated with the material outlet 62 is arranged right below the scroll 11. Driven by the material clamping movement mechanism, the two symmetrically arranged material clamping mechanisms 1 are butted in the coiled material belt conveying channel 6, and coiled materials are wound on the two reels 11 at the crossing butt joint position. After winding shaping operation is accomplished, two spools 11 keep away from each other, and the waste material book falls down and falls into in the aggregate opening and then discharges this rolling machine through discharge gate 62.

The material clamping movement mechanism comprises a material clamping cylinder 13 and a cylinder guide rail 14, the main body of the material clamping mechanism 1 is arranged on the material clamping cylinder 13 in a bearing mode, and the cylinder guide rail 14 is laid on the top of the rack 3. The technical characteristics limit the structural characteristics of the clamping movement mechanism, and the clamping cylinder 13 and the cylinder guide rail 14 drive the main body of the clamping mechanism 1, so that the response is fast and the movement is stable.

In order to facilitate the waste roll to fall off from the reel 11, the main body of the material clamping mechanism 1 further comprises a material clamping motor 12 for driving the reel 11 to rotate; the reel 11 is provided with a reel main body section 111 and a conical reel section 112, the reel main body section 111 is connected and assembled with the material clamping motor 12, the conical reel section 112 is fixedly connected with the reel main body section 111, and the shaft diameter of the conical reel section 112 is gradually reduced along the direction far away from the reel main body section 111. The scrap rolls tend to slip off the tapered ramp surfaces of the tapered spool section 112.

In order to control the dropping position of the waste material roll, an air passage is arranged in the scroll main body section 111, and a plurality of air suction ports communicated with the air passage are formed in the scroll main body section 111. In particular, the abutment point of the two reels 11 is located in the middle of the web transport path 6, and if not disposed of, the waste rolls tend to fall near the middle of the path after the two reels 11 have been separated. After the air suction port is provided on the reel body section 111 of the present apparatus, before the reel 11 is separated, the air suction port of the reel 11 on the side of the target position of the waste web roll is opened, so that the waste web roll is closely and firmly adsorbed on the reel 11, and then the two reels 11 are separated, after the material clamping mechanism 1 on which the reel 11 is located is moved to the vicinity of the target position. The suction port stops sucking, and since the reel 11 is not butted, a part of the waste coil is suspended at this time, and the waste coil is inclined and then dropped to a target position under the gravity of the suspended section.

Each air suction port extends from the joint of the conical scroll section 112 and the scroll main body section 111 to the direction far away from the conical scroll section 112; the suction ports are all arranged on the same half arc surface of the spool 11. In the technical feature, the air suction port extends from the joint portion of the two reel 11 sections, so that after the waste coiled material is adsorbed by the air suction port, the waste coiled material far away from the reel main body section 111 is suspended from the joint portion of the two reel 11 sections, and the suspended section of the waste coiled material is long and is more prone to being inclined and falling off. The air suction ports are all arranged on the same semi-arc surface of the scroll 11, so that the resultant force of the adsorption force generated by each air suction port faces to one direction, and the adsorption stability is improved.

For improving the accuracy of the moving position of the device to the coiled material belt or the waste coiled material, the material clamping mechanism 1 is provided with an infrared distance measuring module for detecting the position coordinate of the coiled material belt wound on the scroll 11.

The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.