A fully automatic paperboard blanking machine

Abstract

The utility model discloses a full -automatic paperboard blanking machine belongs to paperboard blanking machine technical field. Including having first hollow support, the top of first hollow support is installed with second hollow support, and the top of first hollow support is rotationally connected with drive shaft in the both sides of second hollow support, and the outside of drive shaft is respectively equipped with the material roll of discharging and the material roll of collecting, and the inside of drive shaft has the cavity, and the surface of drive shaft has four groups of sliding slot, and sliding slot and cavity are linked, and the rotatable connection of cavity has the pivot, and the side of pivot is installed with four groups arc convexity peripherally equidistance, and the sliding block has in sliding slot, and the elastic connection between sliding block and cavity, and arc convexity extrude sliding block, and sliding block extrude the inner wall of material roll of discharging and material roll of collecting, and the side of drive shaft is equipped with the locking piece, and the locking piece is used for fixed pivot, and the top of second hollow support is installed with blanking element, and this technical scheme can reach the purpose of quick change roll to can promote production efficiency and reduce operation and maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of cardboard die-cutting machine technology, specifically a fully automatic cardboard die-cutting machine. Background Technology

[0002] A cardboard die-cutting machine is a specialized piece of equipment used to punch and cut cardboard raw materials into preset shapes and sizes. It is widely used in packaging printing, furniture manufacturing, and other fields. Its workflow typically includes paper roll feeding, positioning and conveying, punching and cutting, and waste collection. The degree of automation and ease of operation of the equipment directly affects production efficiency and processing costs.

[0003] Existing cardboard die-cutting machines have the following drawbacks in practical applications:

[0004] A single paper roll typically requires multiple bolts to be evenly fixed around its circumference. Tightening or disassembling requires operating each bolt individually, and replacing a single roll is time-consuming. At the same time, the bolt fixing must ensure the coaxiality of the paper roll and the rotating shaft; otherwise, the paper roll will wobble during the feeding process, affecting the subsequent punching accuracy.

[0005] In summary, existing cardboard punching machines suffer from low roll-changing efficiency and insufficient production continuity due to their multi-bolt-fixed paper roll installation method. Therefore, there is an urgent need to develop a fully automatic cardboard punching machine with a rapid roll-changing structure to improve production efficiency and reduce operating costs. Utility Model Content

[0006] The purpose of this invention is to provide a fully automatic cardboard die-cutting machine to solve the problems mentioned in the background art.

[0007] In view of the above problems, the technical solution proposed by this utility model is as follows:

[0008] An automatic cardboard die-cutting machine includes a first cutout bracket, a second cutout bracket mounted on the top surface of the first cutout bracket, and drive shafts rotatably connected to both sides of the second cutout bracket on the top surface of the first cutout bracket. Feed rolls and take-up rolls are respectively fitted onto the outer sides of the drive shafts. The drive shafts have internal cavities, and their surfaces have four sets of sliding grooves communicating with the cavities. A rotating shaft is rotatably connected within the cavities. Four sets of arc-shaped protrusions are equidistantly mounted on the side of the rotating shaft. A stop block slides within the sliding groove, and the stop block is elastically connected to the cavity. The arc-shaped protrusions press against the stop block, and the stop block presses against the inner walls of the feed roll and take-up roll. A locking element is provided on the side of the drive shaft. The locking component is used to fix the rotating shaft. A punching component is installed on the top of the second hollow bracket. Several first optical shafts are rotatably connected to the inside of the first hollow bracket and the top of the second hollow bracket. Paperboard is wound on the outside of the feeding roll. The free end of the paperboard passes through several first optical shafts and the punching component in sequence and is fixed on the taking-up roll. A first motor is installed on the back of the first hollow bracket. The first motor drives the drive shaft to rotate. Through the rotating shaft and the arc-shaped protrusion structure inside the drive shaft, the loading and unloading of the feeding roll and the taking-up roll can be quickly realized without tightening the bolts one by one, thereby improving production efficiency. The abutment block evenly squeezes the inner wall of the paper roll to ensure that the paper roll rotates coaxially with the drive shaft, avoids swaying that affects the punching accuracy, and reduces maintenance costs.

[0009] Furthermore, a square groove is provided at the center of the end face of the drive shaft, and a hexagonal bolt is provided at the center of the square groove. The hexagonal bolt is connected to the center of the shaft. A square block is attracted to the square groove by a magnet. A hexagonal groove is provided on the side of the square block, and the hexagonal bolt is located in the hexagonal groove. The attraction design of the square block and the magnet allows for quick disassembly and assembly of the shaft without the need for additional tools.

[0010] Furthermore, two pairs of connecting blocks are installed on the side of the abutment, and the two pairs of connecting blocks are respectively close to the end face of the abutment. A first spring is connected between the connecting block and the cavity. The first spring provides a reset force to ensure that the abutment retracts quickly when unlocked, which facilitates the disassembly of the paper roll. The two pairs of connecting blocks are evenly distributed to balance the force on the abutment and avoid tilting and jamming.

[0011] Furthermore, a shaft body is installed at the center of the other end face of the drive shaft. The output end of the first motor is connected to the shaft body for transmission. The shaft body transmits the power of the first motor to ensure that the drive shaft rotates smoothly, drives the paper roll to feed or retract at a uniform speed, ensures that the paperboard conveying speed is uniform, and improves the die-cutting accuracy.

[0012] Furthermore, the punching component includes a lower die base mounted on the top surface of the second hollowed-out bracket. Four sets of support rods are mounted on the top surface of the lower die base. A top seat is mounted on the top of each support rod. An electric telescopic rod is mounted at the center of the top surface of the top seat. An upper die base is mounted on the telescopic end of the electric telescopic rod. The upper die base slides outside the four sets of support rods. A die cavity is mounted on the bottom surface of the upper die base. A punch is mounted on the top surface of the lower die base. The cardboard passes directly above the punch. The electric telescopic rod drives the die cavity to cooperate with the punch for punching, allowing precise control of the punching force and depth to adapt to cardboard of different thicknesses. The support rods ensure smooth lifting and lowering of the upper die base, preventing shaking during punching from affecting accuracy.

[0013] Furthermore, a second spring is fitted on the outer side of each support rod, and the second spring is connected to the lower die base. The second spring provides buffering force to reduce vibration during punching and protect the die and equipment; at the same time, it assists the upper die base to quickly reset and improves punching efficiency.

[0014] Furthermore, a pair of rollers are rotatably mounted inside the second hollow bracket, and a pair of second optical shafts are rotatably mounted on the top surface of the second hollow bracket. A feeding belt is connected between the pair of rollers and the pair of second optical shafts. The feeding belt passes directly above the punch and is located below the cardboard. A second motor is also mounted on the back of the first hollow bracket, and the output end of the second motor is connected to the roller drive. A feeding groove is opened on the top of the first hollow bracket in the part located below the second hollow bracket. A collection box is installed inside the first hollow bracket, and the collection box is located below the feeding groove. The feeding belt transports the cardboard after punching to avoid waste accumulation affecting production; the collection box collects waste for easy cleaning; the second motor drives the rollers to rotate to ensure that the feeding belt is transported at a uniform speed and synchronized with the punching rhythm.

[0015] Compared with the prior art, the beneficial effects of this utility model are: the fully automatic cardboard die-cutting machine can quickly realize the loading and unloading of feeding rolls and taking rolls through the rotating shaft and arc-shaped protrusion structure in the drive shaft, without the need to tighten the bolts one by one, thereby improving production efficiency. Attached Figure Description

[0016] Figure 1 This is a first three-dimensional structural schematic diagram of the fully automatic cardboard die-cutting machine disclosed in an embodiment of the present utility model;

[0017] Figure 2 This is a second three-dimensional structural diagram of the fully automatic cardboard die-cutting machine disclosed in an embodiment of the present utility model;

[0018] Figure 3 This is an exploded structural diagram of the fully automatic cardboard die-cutting machine disclosed in an embodiment of the present utility model;

[0019] Figure 4This is a cross-sectional structural diagram of the fully automatic cardboard die-cutting machine disclosed in an embodiment of the present utility model;

[0020] Figure 5 for Figure 4 A magnified schematic diagram of structure A in the middle.

[0021] In the diagram: 1. First hollow support; 2. Feed chute; 3. Second hollow support; 4. Drive shaft; 5. Feed roll; 6. Take-up roll; 7. Cardboard; 8. First optical axis; 9. Lower mold base; 10. Support rod; 11. Top base; 12. Electric telescopic rod; 13. Upper mold base; 14. Die; 15. Second spring; 16. Feeding belt; 17. Second optical axis; 18. Collection box; 19. Shaft body; 20. Abutment block; 21. Square block; 22. Square groove; 23. Slide groove; 24. Rotating shaft; 25. Arc-shaped protrusion; 26. Hex bolt; 27. First spring; 28. Roller. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figures 1-5This utility model provides a technical solution: a fully automatic cardboard die-cutting machine, including a first cutout bracket 1, a second cutout bracket 3 mounted on the top surface of the first cutout bracket 1, and drive shafts 4 rotatably connected to both sides of the second cutout bracket 3 on the top surface of the first cutout bracket 1. Feed rolls 5 and take-up rolls 6 are respectively fitted onto the outer sides of the drive shafts 4. The drive shafts 4 have a cavity inside, and four sets of sliding grooves 22 on their surface, communicating with the cavity. A rotating shaft 24 is rotatably connected inside the cavity. Four sets of arc-shaped protrusions 25 are equidistantly mounted on the side of the rotating shaft 24. A stop block 20 slides within the sliding groove 22, elastically connected to the cavity. The arc-shaped protrusions 25 press against the stop block 20, and the stop block 20 press against the feed roll 5 and take-up roll 6. The inner wall of the first hollow bracket 1 has a locking device on the side of the drive shaft 4 to fix the rotating shaft 24. The top of the second hollow bracket 3 is equipped with a punching device. The inside of the first hollow bracket 1 and the top of the second hollow bracket 3 are rotatably connected to several first optical shafts 8. The outer side of the feeding roll 5 is wound with cardboard 7. The free end of the cardboard 7 passes through several first optical shafts 8 and the punching device in sequence and is fixed on the receiving roll 6. The back of the first hollow bracket 1 is equipped with a first motor, which drives the drive shaft 4 to rotate. When installing the paper roll, the feeding roll 5 or the receiving roll 6 is placed on the outside of the drive shaft 4. The rotating shaft 24 is unlocked by the locking device. The rotating shaft 24 is rotated so that the arc-shaped protrusion 25 presses the abutment block 20. The abutment block 20 slides in the slide groove 22 and extends outward, evenly pressing the inner wall of the paper roll. After the locking device fixes the rotating shaft 24, the first motor drives the drive shaft 4 to rotate, driving the paper roll to feed or receive. When changing the roll, unlock the pivot 24, the first spring 27 pulls the stop block 20 to retract, and the paper roll can be quickly removed.

[0024] As an embodiment of this utility model, a square groove 23 is further provided at the center of the end face of the drive shaft 4, and a hexagonal bolt 26 is provided at the center of the square groove 23. The hexagonal bolt 26 is connected to the center of the rotating shaft 24. A square block 21 is attracted to the square groove 23 by a magnet. A hexagonal groove is provided on the side of the square block 21, and the hexagonal bolt 26 is located in the hexagonal groove. When disassembling, the square block 21 is removed, and the hexagonal bolt 26 is rotated with a hexagonal wrench to drive the rotating shaft 24 to rotate. When installing, the square block 21 is embedded into the square groove 23, and the magnet is attracted and fixed. The hexagonal bolt 26 enters the hexagonal groove. The square block 21 cooperates with the square groove 23 to restrict the rotation of the hexagonal bolt 26, thereby fixing the rotating shaft 24.

[0025] As an embodiment of this utility model, two pairs of connecting blocks are further installed on the side of the abutment block 20, and the two pairs of connecting blocks are respectively close to the end face of the abutment block 20. A first spring 27 is connected between the connecting block and the cavity. When the rotating shaft 24 rotates and the arc-shaped protrusion 25 moves away from the abutment block 20, the first spring 27 extends and pulls the abutment block 20 back into the cavity along the slide groove 22. When the arc-shaped protrusion 25 presses the abutment block 20, the first spring 27 is compressed and the abutment block 20 extends outward to press against the paper roll.

[0026] As an embodiment of this utility model, a shaft body 19 is further installed at the center of the other end face of the drive shaft 4. The output end of the first motor is connected to the shaft body 19 for transmission. When the first motor is running, it drives the shaft body 19 to rotate through belt or gear transmission. The shaft body 19 drives the drive shaft 4 to rotate synchronously, thereby driving the unloading roll 5 to unload or the rewind roll 6 to rewind.

[0027] As an embodiment of this utility model, the punching part further includes a lower die base 9 installed on the top surface of the second hollow bracket 3. Four sets of support rods 10 are installed on the top surface of the lower die base 9. A top seat 11 is installed at the top of the support rods 10. An electric telescopic rod 12 is installed at the center of the top surface of the top seat 11. An upper die base 13 is installed at the telescopic end of the electric telescopic rod 12. The upper die base 13 slides on the outside of the four sets of support rods 10. A concave die 14 is installed on the bottom surface of the upper die base 13. A convex die is installed on the top surface of the lower die base 9. When the cardboard 7 passes directly above the convex die, the electric telescopic rod 12 extends, pushing the upper die base 13 to slide downward along the support rods 10. The concave die 14 and the convex die close together to punch the cardboard 7. When the electric telescopic rod 12 retracts, the second spring 15 resets, driving the upper die base 13 to rise, completing one punching cycle.

[0028] As an embodiment of this utility model, the outer side of the support rod 10 is further fitted with a second spring 15, and the second spring 15 is connected to the lower die base 9. During punching, the upper die base 13 presses down to compress the second spring 15; after punching is completed, the second spring 15 releases its elastic force and pushes the upper die base 13 to return to its original position, thereby reducing the load on the electric telescopic rod 12.

[0029] As an embodiment of this utility model, a pair of rollers 28 are rotatably installed inside the second hollow bracket 3, and a pair of second optical shafts 17 are rotatably installed on the top surface of the second hollow bracket 3. A feeding belt 16 is connected between the pair of rollers 28 and the pair of second optical shafts 17. The feeding belt 16 passes directly above the punch and is located below the cardboard 7. A second motor is also installed on the back of the first hollow bracket 1, and the output end of the second motor is connected to the rollers 28 for transmission. A feeding groove 2 is opened on the top of the first hollow bracket 1 in the part located below the second hollow bracket 3. A collection box 18 is installed inside the first hollow bracket 1, and the collection box 18 is located below the feeding groove 2. The cardboard 7 after punching falls onto the feeding belt 16. The second motor drives the rollers 28 to rotate, driving the feeding belt 16 to transport the cardboard 7 to the feeding groove 2. The waste falls into the collection box 18, realizing the automatic collection of waste.

[0030] It should be noted that all standard parts used in this application can be purchased from the market, and can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The control method is automatic control through a control cabinet. The control circuit can be implemented by simple programming by those skilled in the art and is common knowledge in the field. Furthermore, since this application is mainly used to protect mechanical devices, this application will not explain the control method and circuit connection in detail.

Claims

1. A fully automatic cardboard die-cutting machine, characterized in that, The system includes a first hollow support (1), a second hollow support (3) mounted on the top surface of the first hollow support (1), and drive shafts (4) rotatably connected to both sides of the top surface of the first hollow support (1) located on the second hollow support (3). Feed rolls (5) and take-up rolls (6) are respectively fitted onto the outer sides of the drive shafts (4). The drive shafts (4) have a cavity inside, and four sets of sliding grooves (22) are present on the surface of the drive shafts (4). The sliding grooves (22) communicate with the cavity. A rotating shaft (24) is rotatably connected inside the cavity. Four sets of arc-shaped protrusions (25) are equidistantly installed on the side of the rotating shaft (24). A stop block (20) slides within the sliding groove (22), and the stop block (20) and the cavity are elastically connected. The arc-shaped protrusion (25) presses against the block (20), and the block (20) presses against the inner wall of the feed roll (5) and the take-up roll (6). The side of the drive shaft (4) is provided with a locking member, which is used to fix the rotating shaft (24). The top of the second hollow bracket (3) is equipped with a punching member. The inside of the first hollow bracket (1) and the top of the second hollow bracket (3) are rotatably connected with several first optical shafts (8). The outside of the feed roll (5) is wound with cardboard (7). The free end of the cardboard (7) passes through several first optical shafts (8) and the punching member in sequence and is fixed on the take-up roll (6). The back of the first hollow bracket (1) is equipped with a first motor, which drives the drive shaft (4) to rotate.

2. The fully automatic cardboard die-cutting machine according to claim 1, characterized in that, A square groove (23) is provided at the center of the end face of the drive shaft (4). A hexagonal bolt (26) is provided at the center of the square groove (23), and the hexagonal bolt (26) is connected to the center of the rotating shaft (24). A square block (21) is attracted by a magnet in the square groove (23). A hexagonal groove is provided on the side of the square block (21), and the hexagonal bolt (26) is located in the hexagonal groove.

3. The fully automatic cardboard die-cutting machine according to claim 1, characterized in that, Two pairs of connecting blocks are installed on the side of the abutment (20), and the two pairs of connecting blocks are respectively close to the end face of the abutment (20). A first spring (27) is connected between the connecting blocks and the cavity.

4. The fully automatic cardboard die-cutting machine according to claim 1, characterized in that, A shaft body (19) is installed at the center of the other end face of the drive shaft (4), and the output end of the first motor is connected to the shaft body (19) in a transmission connection.

5. The fully automatic cardboard die-cutting machine according to claim 1, characterized in that, The punching part includes a lower die base (9) installed on the top surface of the second hollow bracket (3). Four sets of support rods (10) are installed on the top surface of the lower die base (9). A top seat (11) is installed at the top of the support rods (10). An electric telescopic rod (12) is installed at the center of the top surface of the top seat (11). An upper die base (13) is installed at the telescopic end of the electric telescopic rod (12). The upper die base (13) slides outside the four sets of support rods (10). A concave die (14) is installed on the bottom surface of the upper die base (13). A convex die is installed on the top surface of the lower die base (9). The cardboard (7) passes directly above the convex die.

6. The fully automatic cardboard die-cutting machine according to claim 5, characterized in that, Each of the support rods (10) is fitted with a second spring (15), and the second spring (15) is connected to the lower mold base (9).

7. The fully automatic cardboard die-cutting machine according to claim 5, characterized in that, A pair of rollers (28) are rotatably installed inside the second hollow bracket (3). A pair of second optical shafts (17) are rotatably installed on the top surface of the second hollow bracket (3). A feeding belt (16) is connected between the pair of rollers (28) and the pair of second optical shafts (17). The feeding belt (16) passes directly above the punch and is located below the cardboard (7). A second motor is also installed on the back of the first hollow bracket (1), and the output end of the second motor is connected to the rollers (28) for transmission. A feeding groove (2) is opened on the top of the first hollow bracket (1) in the part located below the second hollow bracket (3). A collection box (18) is installed inside the first hollow bracket (1), and the collection box (18) is located below the feeding groove (2).

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