A CNC circular die cutting machine capable of reducing waste

Abstract

The invention relates to the technical field of cardboard processing, and in particular to a CNC circular die-cutting machine capable of reducing waste, comprising an unwinding section, a paper rack section, a die-cutting section and a paper feeding section, wherein the die-cutting section comprises a frame, an upper roller and a lower roller are mounted on the frame, a servo motor drive mechanism is arranged on the unwinding section, and an adjustment ring is also included, a mounting ring is concentrically arranged at the central area of ​​the adjustment ring, the mounting ring is sleeved on the right side mounting shaft of the lower roller, and the mounting ring and the lower roller can rotate relatively, the adjustment ring is connected to the outside of the mounting ring through a plurality of U-shaped connecting rods, a laser sensor is connected to one end of the sleeve away from the U-shaped connecting rod, the laser sensor is electrically connected to the servo motor drive mechanism through a signal receiver, a waste collection device is arranged on the lower side between the output end of the die-cutting section and the input end of the paper feeding section, thereby reducing the waste of paper and the generation of waste, and scraps can be collected by the waste collection device, thereby improving the quality of the working environment.

Description

Technical Field

[0001] The invention relates to the technical field of cardboard processing, in particular to a numerically controlled circular die cutting machine capable of reducing waste. Background Art

[0002] As is known to all, a CNC circular die-cutting machine is an auxiliary device for cutting and processing cardboard into a circular shape. It has been widely used in the field of cardboard processing. The existing CNC circular die-cutting machine includes a circular die-cutting machine body, which generally includes an unwinding part, a paper rack part, a die-cutting part and a paper feeding part. The unwinding part is provided with a servo motor drive mechanism. When in use, the unwinding part, the paper rack part, the die-cutting part and the paper feeding part are combined together by using CNC technology. The paper roll is placed on the unwinding part for paper feeding, and then the paper rack The die-cutting section stretches the paper and conveys it to the die-cutting section. The die-cutting section generally includes an upper roller and a lower roller. The upper roller is generally a rubber pad roller, and the lower roller is generally a knife die roller. The die for die-cutting cardboard is installed on the outside of the knife die roller. The die-cutting section has its own driving mechanism to drive the upper and lower rollers to die-cut the paper. Through the cooperation with the upper roller, the paper is conveyed between the upper and lower rollers, and the cardboard is die-cut during the conveying process of the cardboard through the extrusion between the mold and the rubber pad roller. Finally, the die-cut product falls onto the paper feeding section for conveying and sorting.

[0003] However, it is found in the use of the existing CNC circular die-cutting machine that due to the inconsistency of the size and model of the final product, different molds for die-cutting cardboard need to be constantly replaced. First, the replacement is cumbersome. Second, due to the replacement of the mold, the cutting diameter surrounded by the cutter on the mold will be smaller than the circumference of the lower roller. Therefore, the mold will leave a blank area after surrounding the lower roller. During the continuous rotation and conveying process of the lower roller, the paper without the mold cutting position will be directly conveyed out with the rotation of the upper and lower rollers, resulting in most of the area on the paper cannot be cut and used, thereby causing waste of paper and forming more waste, which directly affects the economic cost. Summary of the invention

[0004] 1. Technical issues to be resolved

[0005] In view of the shortcomings of the prior art, the present invention provides a numerically controlled circular die cutting machine which can reduce waste.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a CNC circular die-cutting machine capable of reducing waste, comprising an unwinding section, a paper rack section, a die-cutting section and a paper feeding section, the die-cutting section comprising a frame, an upper roller and a lower roller are mounted on the frame, a servo motor drive mechanism is arranged on the unwinding section, and also comprises an adjusting ring, a mounting ring is concentrically arranged at the central area of ​​the adjusting ring, the mounting ring is sleeved on the right side mounting shaft of the lower roller, and the mounting ring and the lower roller can rotate relative to each other, the adjusting ring is connected to the outside of the mounting ring through a plurality of U-shaped connecting rods, and the plurality of U-shaped connecting rods are respectively fixedly mounted on the inner side wall of the frame through a plurality of clamping seats, the outside of the mounting ring is rotatably connected to the adjusting ring through a plurality of concentric bearings, and the outer end of the adjusting ring is rotatably connected along the mounting shaft. An adjusting rod is fixedly connected to the radial direction of the mounting ring, and an annular groove is arranged on the circumferential inner wall of the adjusting ring. The top end of the adjusting rod is inserted into the annular groove and slidably cooperates with the annular groove. A sleeve is provided on the outer sliding sleeve of the adjusting rod, and a first threaded through hole is provided on the side wall of the sleeve, and a first locking screw is screwed inside the first threaded through hole. A second threaded through hole is provided on the side wall of the adjusting ring, and a second locking screw is screwed inside the second threaded through hole. A laser sensor is connected to the end of the sleeve away from the U-shaped connecting rod, and the laser sensor is electrically connected to the servo motor drive mechanism through a signal receiver. A waste collection device is provided on the lower side between the output end of the die-cutting part and the input end of the paper feeding part.

[0008] Furthermore, the waste collection device includes a collection plate and a collection box, a bracket is installed at the bottom end of the collection box, the collection box is located in the rear area between the output end of the die-cutting part and the input end of the paper feeding part, the front side wall of the collection box is lower than the rear side wall of the collection box, the top end of the collection plate is connected to the front side wall of the collection box, and the other end of the collection plate is tilted and placed on the lower side between the output end of the die-cutting part and the input end of the paper feeding part.

[0009] Furthermore, the collecting plate is a driven conveyor belt, the upper front end portions of the left and right walls of the collecting box are connected with baffles, and the conveyor belt is located between the two baffles, the middle portions of the left and right walls of the collecting box are provided with openings, and hydraulic cylinders are installed in the two openings, the cylinder bodies of the two hydraulic cylinders are located outside the collecting box, and the movable ends of the two hydraulic cylinders are located inside the collecting box, splints are provided on the left and right sides of the interior of the collecting box, and the middle portions of the opposite ends of the two splints are fixedly connected to the movable ends of the two hydraulic cylinders, respectively.

[0010] Furthermore, a concave groove is provided on the base, and the U-shaped connecting rod can be placed in the concave groove. A mounting plate is connected to a side of the base opposite to the concave groove, and the mounting plate is threadedly connected to the inner wall of the frame through screws.

[0011] Furthermore, the holder is a symmetrical structure that is disconnected in the middle, and is composed of two symmetrical jackets, which are buckled together to form a concave groove, and the two jackets are connected by a plurality of screw rods.

[0012] Furthermore, a positioning structure is provided on the opposite side of the two jackets, and the positioning structure includes a positioning pin and a positioning hole, and the positioning pin and the positioning hole are respectively arranged on the opposite sides of the two jackets.

[0013] Furthermore, the inner wall of the concave groove of the holder is connected with a rubber pad.

[0014] Furthermore, the outer parts of the first locking screw and the second locking screw are both threadedly sleeved with locking nuts.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the present invention provides a CNC circular die cutting machine that can reduce waste and has the following beneficial effects:

[0017] The CNC circular die-cutting machine capable of reducing waste can fix a structure composed of a mounting ring, an adjusting ring and an adjusting rod on a frame through a holder, and can make the adjusting ring and the mounting ring rotate relative to each other through the action of a bearing. At the same time, through the sliding fit between the annular slide groove and the adjusting rod, the adjusting rod can rotate with the mounting ring as the center under the action of the bearing. Through the sliding fit between the sleeve and the adjusting rod, the position can be adjusted along the direction of the adjusting rod, so that the laser sensor can adjust the position along the radius direction of the lower roller. Since the adjusting rod can be rotatably adjusted, it can be adjusted according to the position of the empty area where the mold is installed on the lower roller. Therefore, when the lower roller rotates, if the laser sensor senses the existence of the mold, the servo motor drive mechanism on the unwinding part is normal. The unwinding section is driven to rotate and the cardboard is die-cut normally. When the lower roller rotates and the laser sensor senses the empty area, the laser sensor cannot sense the mold at this time, so it sends a signal to the servo motor drive mechanism on the unwinding section to stop it. At this time, the upper and lower rollers rotate normally. Due to the existence of the empty area, the paper stays for a while in the empty area. When the lower roller drives the mold to rotate to the sensing area of ​​the laser sensor, the servo motor drive mechanism on the unwinding section rotates normally again, thereby die-cutting the cardboard. Therefore, the waste of paper in the empty area is reduced by directly transporting it to the outside, further reducing the waste of paper and reducing the generation of waste. The scraps can be collected by the waste collection device to improve the quality of the working environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the present invention;

[0019] Figure 2It is a side view structural diagram of the connection of the adjustment ring, the mounting ring and the U-shaped connecting rod of the present invention;

[0020] Figure 3 It is a side view structural diagram of the connection of the frame, upper roller, lower roller, adjustment ring and laser sensor of the present invention;

[0021] Figure 4 For the present invention Figure 3 A schematic diagram of the local enlarged structure at point A in the middle;

[0022] Figure 5 This is a structural schematic diagram of the card holder of the present invention in an open state;

[0023] Figure 6 It is a schematic diagram of the side structure of the card holder of the present invention;

[0024] Figure 7 It is a side view schematic diagram of the structure of the waste collection device of the present invention;

[0025] Figure 8 It is a top view structural schematic diagram of the connection among the collecting box, the clamping plate and the hydraulic cylinder of the present invention.

[0026] In the figure: 1. unwinding part; 2. paper rack part; 3. die-cutting part; 4. paper feeding part; 5. frame; 6. upper roller; 7. lower roller; 8. servo motor drive mechanism; 9. adjustment ring; 10. mounting ring; 11. U-shaped connecting rod; 12. holder; 13. adjustment ring; 14. adjustment rod; 15. sleeve; 16. first locking screw; 17. second locking screw; 18. laser sensor; 19. waste collection device; 21. collection box; 22. bracket; 23. conveyor belt; 24. baffle; 25. hydraulic cylinder; 26. clamping plate; 27. concave groove; 28. mounting plate; 29. ​​clamping sleeve; 30. screw rod; 31. positioning pin; 32. positioning hole; 33. rubber pad; 34. locking nut. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Example

[0029] See also Figure 1-8A CNC circular die-cutting machine capable of reducing waste includes a reeling section 1, a paper rack section 2, a die-cutting section 3 and a paper feeding section 4. The die-cutting section 3 includes a frame 5, an upper roller 6 and a lower roller 7 are installed on the frame 5, a servo motor driving mechanism 8 is provided on the reeling section 1, and also includes an adjusting ring 9, a mounting ring 10 is concentrically provided at the center area of ​​the adjusting ring 9, the mounting ring 10 is sleeved on the right side mounting shaft of the lower roller 7, and the mounting ring 10 and the lower roller 7 can rotate relative to each other, the adjusting ring 9 is connected to the outside of the mounting ring 10 through a plurality of U-shaped connecting rods 11, and the plurality of U-shaped connecting rods 11 are fixedly installed on the inner side wall of the frame 5 through a plurality of card seats 12, the outside of the mounting ring 10 is rotatably connected to an adjusting ring 13 through a plurality of concentric bearings, and the adjusting ring 13 is rotatably connected to the inner side wall of the frame 5 through a plurality of card seats 12. The outer end of the ring 13 is fixedly connected with an adjusting rod 14 along the radial direction of the mounting ring 10, and an annular groove is arranged on the circumferential inner wall of the adjusting ring 9, and the top end of the adjusting rod 14 is inserted into the annular groove and slidably cooperates with the annular groove, and a sleeve 15 is slidably sleeved on the outer side of the adjusting rod 14, and a first threaded through hole is provided on the side wall of the sleeve 15, and a first locking screw 16 is screwed inside the first threaded through hole, and a second threaded through hole is provided on the side wall of the adjusting ring 13, and a second locking screw 17 is screwed inside the second threaded through hole, and a laser sensor 18 is connected to the end of the sleeve 15 away from the U-shaped connecting rod 11, and the laser sensor 18 is electrically connected to the servo motor drive mechanism 8 through a signal receiver, and is connected to the servo motor drive mechanism 8 through a card The seat 12 can fix the structure composed of the mounting ring 10, the adjustment ring 9 and the adjustment rod 14 on the frame 5. The bearing can make the adjustment ring 13 and the mounting ring 10 rotate relative to each other. At the same time, the sliding fit between the annular slide groove and the adjustment rod 14 can make the adjustment rod 14 rotate with the mounting ring 10 as the center under the action of the bearing. The sliding fit between the sleeve 15 and the adjustment rod 14 can adjust the position along the direction of the adjustment rod 14, so that the laser sensor 18 can adjust the position along the radial direction of the lower roller 7. Since the adjustment rod 14 can be rotatably adjusted, it can be adjusted according to the position of the empty area where the mold is installed on the lower roller 7. Therefore, when the lower roller 7 rotates, if the laser sensor 18 senses the existence of the mold, the roll is unwound. The servo motor drive mechanism 8 on the unwinding part 1 drives the unwinding part 1 to rotate normally, and the cardboard is die-cut normally. When the lower roller 7 rotates, the laser sensor 18 senses the empty area. At this time, the laser sensor 18 cannot sense the mold, so it sends a signal to the servo motor drive mechanism 8 on the unwinding part 1 to stop it. At this time, the upper roller 6 and the lower roller 7 rotate normally. Due to the existence of the empty area, the paper will stay in the empty area for a while. When the lower roller 7 drives the mold to rotate to the sensing area of ​​the laser sensor 18, the servo motor drive mechanism 8 on the unwinding part 1 rotates normally again, so as to die-cut the cardboard, thereby reducing the waste of paper in the empty area directly transported to the outside, further reducing the waste of paper and reducing the generation of waste.A waste collection device 19 is provided at the lower side between the output end of the die-cutting part 3 and the input end of the paper feeding part 4. The waste collection device 19 can collect the scraps to improve the quality of the working environment.

[0030] Furthermore, the waste collection device 19 includes a collection plate and a collection box 21. A bracket 22 is installed at the bottom end of the collection box 21 to increase the use height of the collection box 21 and enhance the stable support capacity of the collection box 21. The collection box 21 is located in the rear area between the output end of the die-cutting part 3 and the input end of the paper feeding part 4. The front side wall of the collection box 21 is lower than the rear side wall of the collection box 21. The top of the collection plate is connected to the front side wall of the collection box 21, and the other end of the collection plate is tilted and placed on the lower side between the output end of the die-cutting part 3 and the input end of the paper feeding part 4, which is convenient for collecting and conveying polygonal scraps. The collection plate is a driven conveyor belt 23 to improve the conveying effect. The upper front end of the left and right side walls of the collection box 21 are connected to baffles 24, and the conveyor belt 23 is located between the two baffles. The left and right sides of the collecting box 21 are provided with openings in the middle, and hydraulic cylinders 25 are installed in the two openings. The cylinder bodies of the two hydraulic cylinders 25 are located outside the collecting box 21, and the movable ends of the two hydraulic cylinders 25 are located inside the collecting box 21. Clamps 26 are provided on the left and right sides of the inside of the collecting box 21, and the middle parts of the opposite ends of the two clamps 26 are fixedly connected with the movable ends of the two hydraulic cylinders 25 respectively. By connecting the hydraulic cylinders 25 to an external hydraulic station, when the scraps inside the collecting box 21 reach a certain amount, the two clamps 26 are relatively close to each other by extending the hydraulic cylinders 25 at the same time, so that the scraps inside the collecting box 21 can be squeezed into blocks, which is convenient for subsequent packaging and recycling.

[0031] Furthermore, a concave groove 27 is provided on the base 12, and the U-shaped connecting rod 11 can be placed in the concave groove 27. A mounting plate 28 is connected to the side of the base 12 opposite to the concave groove 27, and the mounting plate 28 is threadedly connected to the inner wall of the frame 5 by screws. The design of the concave groove 27 facilitates the clamping of the U-shaped connecting rod 11, and the coordinated use of the mounting plate 28 and the screws facilitates the installation and disassembly of the base 12. The base 12 is a symmetrical structure disconnected in the middle, which consists of two symmetrical jackets 29, which are buckled to form a concave groove 27, and the two jackets 29 are connected by a plurality of screw rods 30. Since the base 12 needs to semi-enclosed clamp the U-shaped connecting rod 11, the symmetrical design of the jacket 29 facilitates the installation and disassembly between the base 12 and the U-shaped connecting rod 11.

[0032] On the basis of the above scheme, a positioning structure is provided on the opposite side of the two sleeves 29, and the positioning structure includes a positioning pin 31 and a positioning hole 32. The positioning pin 31 and the positioning hole 32 are respectively arranged on the opposite sides of the two sleeves 29 to facilitate the alignment and buckling of the two sleeves 29. The inner wall of the concave groove 27 of the socket 12 is connected with a rubber pad 33 to enhance the friction between the U-shaped connecting rod 11 and the concave groove 27 of the socket 12 and improve the installation stability. The outer parts of the first locking screw 16 and the second locking screw 17 are threaded with a locking nut 34. Through the use of the locking nut 34, the stability of the position of the first locking screw 16 and the second locking screw 17 after rotation is improved, so that the position of the laser sensor 18 can be fixed to prevent the position of the laser sensor 18 from shifting and affecting the detection effect.

[0033] In summary, the working principle and working process of the CNC circular die-cutting machine that can reduce waste are as follows: first, the paper roll is placed on the unwinding part 1 according to the process operation, and then the worker stretches the paper to pass through the paper rack part 2 and the die-cutting part 3 in turn according to the operation sequence, and the servo motor drive mechanism 8 on the unwinding part 1 is controlled by operating the CNC panel to work, and the required mold is installed on the lower roller 7. According to the empty space of the mold on the lower roller 7, the adjusting rod 14 is rotated to adjust the use position of the adjusting rod 14, and then according to the radius of the mold, the sleeve 15 is slid to adjust the sensing position of the laser sensor 18. After the position of the laser sensor 18 is adjusted appropriately according to the mold, the first locking screw 16 and the second locking screw 17 are tightened, and the use position of the first locking screw 16 and the second locking screw 17 are locked with the locking nut 34, and at the same time, the die-cutting part 3 is turned on to act, and the self-contained driving mechanism on the die-cutting part 3 drives the upper roller 6 and the lower roller 7 to act. The paper is die-cut. When the lower roller 7 rotates and the laser sensor 18 senses the empty area, the laser sensor 18 cannot sense the mold at this time, so it sends a signal to the servo motor drive mechanism 8 on the unwinding part 1 to stop it. At this time, the upper roller 6 and the lower roller 7 rotate normally. Due to the existence of the empty area, the paper stays for a while at the position of the empty area. When the lower roller 7 drives the mold to rotate to the sensing area of ​​the laser sensor 18, the servo motor drive mechanism 8 on the unwinding part 1 rotates normally again, thereby die-cutting the cardboard, turning on the conveyor belt 23, and conveying the scraps generated during the die-cutting to the collection box 21. The hydraulic cylinder 25 is connected to the external hydraulic station for use. When the scraps inside the collection box 21 reach a certain amount, the hydraulic cylinder 25 is extended at the same time to make the two clamps 26 relatively close, so that the scraps inside the collection box 21 can be squeezed into blocks for subsequent packaging and recycling.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A CNC circular die-cutting machine capable of reducing waste, comprising an unwinding section (1), a paper frame section (2), a die-cutting section (3) and a paper feeding section (4), wherein the die-cutting section (3) comprises a frame (5), an upper roller (6) and a lower roller (7) are mounted on the frame (5), and a servo motor drive mechanism (8) is arranged on the unwinding section (1), characterized in that: The machine also comprises an adjusting ring (9), wherein a mounting ring (10) is concentrically arranged in the central area of ​​the adjusting ring (9), wherein the mounting ring (10) is sleeved on the right mounting shaft of the lower roller (7), and the mounting ring (10) and the lower roller (7) can rotate relative to each other, wherein the adjusting ring (9) and the outside of the mounting ring (10) are connected via a plurality of U-shaped connecting rods (11), wherein the plurality of U-shaped connecting rods (11) are respectively fixedly mounted on the inner side wall of the frame (5) via a plurality of clamping seats (12), wherein the outside of the mounting ring (10) is rotatably connected to an adjusting ring (13) via a plurality of concentric bearings, and the outer end of the adjusting ring (13) is fixedly connected to an adjusting rod (14) along the radial direction of the mounting ring (10), and an annular sliding groove is arranged on the circumferential inner wall of the adjusting ring (9), and the adjusting rod (14) is fixedly mounted on the inner side wall of the adjusting ring (10). The top end of the adjusting rod (14) is inserted into the annular groove and slidably cooperates with the annular groove, the outer sliding sleeve of the adjusting rod (14) is provided with a sleeve (15), and a first threaded through hole is provided on the side wall of the sleeve (15), and a first locking screw (16) is screwed inside the first threaded through hole, a second threaded through hole is provided on the side wall of the adjusting ring (13), and a second locking screw (17) is screwed inside the second threaded through hole, a laser sensor (18) is connected to the end of the sleeve (15) away from the U-shaped connecting rod (11), and the laser sensor (18) is electrically connected to the servo motor drive mechanism (8) through a signal receiver, and a waste collection device (19) is provided on the lower side between the output end of the die-cutting part (3) and the input end of the paper feeding part (4).

2. A CNC circular die cutting machine capable of reducing waste according to claim 1, characterized in that: The waste collection device (19) comprises a collection plate and a collection box (21), a bracket (22) is installed at the bottom end of the collection box (21), the collection box (21) is located in the rear area between the output end of the die-cutting part (3) and the input end of the paper feeding part (4), the front side wall of the collection box (21) is lower than the rear side wall of the collection box (21), the top end of the collection plate is connected to the front side wall of the collection box (21), and the other end of the collection plate is tilted and placed on the lower side between the output end of the die-cutting part (3) and the input end of the paper feeding part (4).

3. A CNC circular die cutting machine capable of reducing waste according to claim 2, characterized in that: The collecting plate is a conveyor belt (23) with a drive, the upper front ends of the left and right side walls of the collecting box (21) are connected with baffles (24), and the conveyor belt (23) is located between the two baffles (24), the middle parts of the left and right side walls of the collecting box (21) are provided with openings, and hydraulic cylinders (25) are installed in the two openings, the cylinder bodies of the two hydraulic cylinders (25) are located outside the collecting box (21), the movable ends of the two hydraulic cylinders (25) are located inside the collecting box (21), and clamps (26) are provided on the left and right sides of the inside of the collecting box (21), and the middle parts of the opposite ends of the two clamps (26) are fixedly connected to the movable ends of the two hydraulic cylinders (25) respectively.

4. A CNC circular die cutting machine capable of reducing waste according to claim 3, characterized in that: The base (12) is provided with a concave groove (27), and the U-shaped connecting rod (11) can be placed in the concave groove (27). A mounting plate (28) is connected to a side of the base (12) opposite to the concave groove (27), and the mounting plate (28) is threadedly connected to the inner wall of the frame (5) via screws.

5. A CNC circular die cutting machine capable of reducing waste according to claim 4, characterized in that: The holder (12) is a symmetrical structure that is disconnected in the middle and is composed of two symmetrical jackets (29). The two jackets (29) are buckled together to form a concave groove (27), and the two jackets (29) are connected by a plurality of screw rods (30).

6. A CNC circular die cutting machine capable of reducing waste according to claim 5, characterized in that: A positioning structure is provided on the opposite side of the two jackets (29), and the positioning structure comprises a positioning pin (31) and a positioning hole (32). The positioning pin (31) and the positioning hole (32) are respectively arranged on the opposite sides of the two jackets (29).

7. A CNC circular die cutting machine capable of reducing waste according to claim 6, characterized in that: The inner wall of the concave groove (27) of the holder (12) is connected with a rubber pad (33).

8. A CNC circular die cutting machine capable of reducing waste according to claim 5, characterized in that: The outer parts of the first locking screw (16) and the second locking screw (17) are both threadedly mounted with locking nuts (34).

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