A paper box processing paperboard waste cleaning multi-combination ejector pin automatic dismounting device

Abstract

The present application belongs to the technical field of packaging carton processing, and particularly relates to a paperboard waste cleaning multi-combination ejector pin automatic dismounting device for paper carton processing. The paperboard waste cleaning multi-combination ejector pin automatic dismounting device comprises a waste cleaning synchronous belt, characterized in that: a plurality of needle libraries are arranged on the inner side of the waste cleaning synchronous belt, at least one of a center two-needle waste cleaning ejector pin, a four-needle waste cleaning ejector pin and an eccentric two-needle waste cleaning ejector pin is stored in the needle library, and an ejector pin pushing mechanism is arranged on the outer side of the needle library. The present application has the beneficial effects that: when a batch of paperboards is processed, the ejector pins on the waste cleaning synchronous belt are automatically stored in the needle library under the pushing of the needle dismounting device, and when the next batch of paperboards needs to be processed, the needle pushing cylinders on the needle mounting device will sequentially install corresponding ejector pins in the waste area, so that the plate mounting is rapid, the ejector pins can be reused, and the manufacturing is easy, and the waste cleaning problem is completely solved.

Description

(I) Technical Field

[0002] This invention belongs to the field of packaging carton processing technology, and specifically relates to an automatic disassembly and assembly device for multiple combination ejector pins for cleaning waste paperboard in carton processing. (II) Background Technology

[0004] Cardboard boxes are widely used in cargo packaging and transportation. The cardboard box manufacturing process involves die-cutting and waste removal. Waste removal typically uses a waste removal board, which is time-consuming, requires replacement for each batch, incurs high plate-making costs, and demands strict technical expertise, resulting in significant resource waste. Consequently, this method has not been widely adopted, and waste removal is still largely done manually, which is time-consuming, labor-intensive, and unsuitable for modern production. Therefore, we have applied for a patent for our ejector pin waste removal technology, which achieves plate-free waste removal, saving considerable manpower and resources. However, loading and unloading the ejector pins still requires manual labor, and the ejector pins are relatively small, making the process time-consuming and labor-intensive. (III) Summary of the Invention

[0006] In order to overcome the shortcomings of the prior art, the present invention provides an automatic disassembly and assembly device for multiple combinations of ejector pins for cleaning waste paperboard in carton processing, which is simple in structure, highly efficient, accurately positioned, reusable, and easy to manufacture.

[0007] This invention is achieved through the following technical solution:

[0008] An automatic disassembly and assembly device for multiple combination ejector pins for cleaning waste in cardboard box processing includes a waste cleaning synchronous belt. The device is characterized in that: the inner side of the waste cleaning synchronous belt is provided with several pin magazines, and the pin magazines store at least one of the following: central two-pin waste cleaning ejector pins, four-pin waste cleaning ejector pins, and eccentric two-pin waste cleaning ejector pins. An ejector pin ejection mechanism is provided on the outer side of the pin magazines.

[0009] The outer side of the waste removal synchronous belt is equipped with a pin-pushing mechanism.

[0010] The needle magazine is equipped with a central two-needle waste removal pin positioning block, a four-needle waste removal pin positioning block, or an eccentric two-needle waste removal pin positioning block.

[0011] The ejector pin mechanism and the pin magazine are mounted on the base, through which the ball screw passes and a guide shaft passes.

[0012] The ejector pin pushing mechanism is mounted on a movable base, which passes through a rotating lead screw and has a guide rod inside.

[0013] The ejector pin ejection mechanism is an ejector pin ejection cylinder.

[0014] The ejector pin pushing mechanism is an ejector pin pushing cylinder.

[0015] The needle magazine has a needle inlet on the upper inner side, a needle outlet on the lower inner side, and a needle ejection mechanism inlet on the lower outer side.

[0016] The needle magazine is equipped with an entry positioning block at the top. The end of the entry positioning block is hinged to the central two-needle waste removal positioning block, the four-needle waste removal ejector pin positioning block, or the eccentric two-needle waste removal ejector pin positioning block. An entry spring is connected between the outer side of the entry positioning block and the inner wall of the needle magazine.

[0017] The needle magazine has an exit positioning block at the bottom, with the end of the exit positioning block hinged to the bottom of the needle magazine, and an exit spring connecting the outer side of the exit positioning block to the inner wall of the needle magazine.

[0018] The beneficial effects of this invention are: after a batch of paperboard is processed, the ejector pins on the waste removal synchronous belt are automatically put into the warehouse under the push of the ejector pin unloader. When the next batch of paperboard needs to be processed, the pusher pin cylinder on the ejector pin installer will install the corresponding ejector pins in the waste area in sequence. This makes the plate loading fast, the ejector pins can be reused, and it is easy to manufacture, thus completely solving the waste removal problem. (iv) Description of the attached drawings

[0020] The invention will now be further described with reference to the accompanying drawings.

[0021] Appendix Figure 1 This is a schematic diagram of the main structure of the present invention;

[0022] Appendix Figure 2 This is a side view of the structure of the present invention;

[0023] Appendix Figure 3 This is a schematic diagram of the needle magazine structure of the present invention;

[0024] Appendix Figure 4 This is a schematic diagram of the central two-needle waste-clearing ejector pin structure of the present invention;

[0025] Appendix Figure 5 This is a schematic diagram of the four-needle waste removal ejector pin structure of the present invention;

[0026] Appendix Figure 6 This is a schematic diagram of the eccentric two-needle waste-clearing ejector pin structure of the present invention;

[0027] Appendix Figure 7 This is a schematic diagram of the inner surface structure of the waste removal synchronous belt of the present invention;

[0028] Appendix Figure 8 This is a schematic diagram of the installation structure of the warehousing positioning block when the two central needle waste removal pins of the present invention are put into storage.

[0029] Appendix Figure 9 This is a schematic diagram of the installation structure of the warehousing positioning block when the four-needle waste removal ejector pin of the present invention is put into storage;

[0030] Appendix Figure 10This is a schematic diagram of the installation structure of the warehousing positioning block when the eccentric two-needle waste removal ejector pin of the present invention is put into storage.

[0031] Appendix Figure 11 This is a schematic diagram of the installation structure of the outgoing positioning block when the central two-needle waste removal pin of the present invention is out of the warehouse;

[0032] Appendix Figure 12 This is a schematic diagram of the installation structure of the outgoing positioning block when the four-needle waste removal pin of the present invention is out of the warehouse;

[0033] Appendix Figure 13 This is a schematic diagram of the installation structure of the eccentric two-needle waste removal ejector pin positioning block during the ejection process of the present invention.

[0034] In the diagram, 1 is the waste removal timing belt, 2 is the needle magazine, 3 is the center two-needle waste removal ejector pin, 4 is the four-needle waste removal ejector pin, 5 is the eccentric two-needle waste removal ejector pin, 6 is the ejector pin ejection mechanism, 7 is the ejector pin push-in mechanism, 8 is the center two-needle waste removal ejector pin positioning block, 9 is the four-needle waste removal ejector pin positioning block, 10 is the eccentric two-needle waste removal ejector pin positioning block, 11 is the base, 12 is the ball screw, 13 is the guide shaft, 14 is the moving seat, 15 is the rotating screw, 16 is the guide rod, 17 is the ejector pin inlet, 18 is the ejector pin outlet, 19 is the ejector pin ejection mechanism inlet, 20 is the inlet positioning block, 21 is the inlet spring, 22 is the outlet positioning block, 23 is the outlet spring, 24 is the needle hole, 25 is the waste removal timing belt tooth, and 26 is the locking block. (V) Detailed Implementation Methods

[0036] The attached figure illustrates a specific embodiment of the present invention. This embodiment includes a waste-clearing synchronous belt 1. A plurality of needle magazines 2 are provided inside the waste-clearing synchronous belt 1. Each needle magazine 2 stores at least one of the following: a central two-needle waste-clearing ejector pin 3, a four-needle waste-clearing ejector pin 4, and an eccentric two-needle waste-clearing ejector pin 5. An ejector pin ejection mechanism 6 is provided outside the needle magazines 2. An ejector pin insertion mechanism 7 is provided outside the waste-clearing synchronous belt 1. A central two-needle waste-clearing ejector pin positioning block 8, a four-needle waste-clearing ejector pin positioning block 9, or an eccentric two-needle waste-clearing ejector pin positioning block 10 is provided inside the needle magazines 2. The ejector pin ejection mechanism 6 and the needle magazines 2 are mounted on a base 11. A ball screw 12 passes through the base 11, and a guide shaft 13 passes through the base 11. The ejector pin insertion mechanism 7 is mounted on a movable seat 14. A rotating screw 15 passes through the movable seat 14, and a guide rod 16 passes through the movable seat 14. The ejector pin ejection mechanism 6 is an ejector pin ejection cylinder. The ejector pin insertion mechanism 7 is an ejector pin insertion cylinder. The needle magazine 2 has a needle inlet 17 on the upper inner side, a needle outlet 18 on the lower inner side, and a needle ejection mechanism inlet 19 on the lower outer side. A magazine positioning block 20 is located at the top inside the needle magazine 2, with its end hinged to a central two-needle waste removal needle positioning block 8, a four-needle waste removal needle positioning block 9, or an eccentric two-needle waste removal needle positioning block 10. A magazine spring 21 connects the outer side of the magazine positioning block 20 to the inner wall of the needle magazine 2. An exit positioning block 22 is located at the bottom inside the needle magazine 2, with its end hinged to the bottom of the needle magazine 2. An exit spring 23 connects the outer side of the exit positioning block 22 to the inner wall of the needle magazine 2.

[0037] When using the automatic disassembly and assembly device for cleaning waste from cardboard in cardboard processing according to the present invention, after one batch of cardboard boxes is processed, when cleaning waste from another batch of cardboard boxes of different sizes and shapes, it is necessary to first remove the two central waste cleaning pins 3, four waste cleaning pins 4, or eccentric two waste cleaning pins 5 on the waste cleaning synchronous belt 1 during the processing of the previous batch of cardboard boxes. When removing the ejector pin, rotating the screw 15 rotates the moving seat 14 to move laterally to any position on the waste removal timing belt 1. Inside the waste removal timing belt 1, the ejector pin inlet 17 of the needle magazine 2 is on a straight line perpendicular to the ejector pin mounting plane. As the waste removal timing belt 1 rotates, the ejector pin inlet cylinder can push the ejector pins at any position on the waste removal timing belt 1 away from the waste removal timing belt 1. When the ejector pin is pushed down, it enters the ejector pin inlet 17 of the needle magazine 2. As the ejector pin enters the needle magazine 2, under its own gravity, the ejector pin falls along the central two-needle waste removal ejector pin positioning block 8, the four-needle waste removal ejector pin positioning block 9, or the eccentric two-needle waste removal ejector pin positioning block 10. One by one, the ejector pins are arranged vertically in the needle magazine 2. A certain space is left above the center two-needle waste removal ejector pin positioning block 8, or the four-needle waste removal ejector pin positioning block 9, or the eccentric two-needle waste removal ejector pin positioning block 10 for the ejector pin to slide in horizontally, and a certain space is left below the center two-needle waste removal ejector pin positioning block 8, or the four-needle waste removal ejector pin positioning block 9, or the eccentric two-needle waste removal ejector pin positioning block 10 for the ejector pin to slide out horizontally. During the ejector pin removal process, the ball screw 12 rotates, which can move the base 11 laterally, thereby driving the needle magazine 2 to move laterally. After all the ejector pins are removed, the positions for installing the two-pin central ejector pins 3, four-pin ejector pins 4, or eccentric two-pin ejector pins 5 on the waste removal synchronous belt 1 are determined based on the position of the waste paper edges of the new batch of cardboard. Similarly, the rotation of the ball screw 12 drives the base 11 and the needle magazine 2 to any horizontal position. The rotation of the waste removal synchronous belt 1 allows the needle holes 24 used for inserting ejector pins on the waste removal synchronous belt 1 to align with the ejector pin outlet 18. The ejector pin pushing cylinder is activated, and its piston rod passes through the ejector pin ejection mechanism inlet 19, pushing the bottommost ejector pin in the needle magazine 2 out of the ejector pin outlet 18 and inserting it into the needle hole 24 of the waste removal synchronous belt 1. The ejector pins above will fall down in sequence, thus pushing each ejector pin into the required needle hole 24 of the waste removal synchronous belt 1. The ejector pins forming a new array correspond to the waste paper edges of the new batch of cardboard. As the cardboard moves, the ejector pins insert into the waste paper edges, and the ejector pins rotate with the waste removal synchronous belt 1, removing the waste paper edges from the cardboard. When the central two-needle waste removal ejector pin 3, the four-needle waste removal ejector pin 4, or the eccentric two-needle waste removal ejector pin 5 is pushed into the needle magazine 2, the ejector pin pushes the two magazine positioning blocks 20 outward. After the ejector pin enters, under the action of the magazine spring 21, the two magazine positioning blocks 20 swing inward to prevent the ejector pin from being pushed into the mechanism 7 or from being pulled out of the needle magazine 2 due to machine vibration.The ejector pins that fall into the bottom of the needle magazine 2 will not be dislodged from the magazine due to machine vibrations, as they are limited by the two ejector positioning blocks 22. When the ejector pin ejection mechanism 6 needs to eject the ejector pins outward, the piston rod of the ejector pin ejection cylinder moves forward, and the distance between the inner sides of the two ejector positioning blocks 22 becomes smaller and smaller. As the piston rod of the ejector pin ejection cylinder moves forward, it pushes the two ejector positioning blocks 22 outward, thus opening the front ends of the two ejector positioning blocks 22 to allow the ejector pins to smoothly exit the needle magazine 2. After the piston rod of the ejector pin ejection cylinder retracts, under the action of the ejector spring 23, the two ejector positioning blocks 22 swing inward again to position the fallen ejector pins. When the die-cut cardboard passes over the waste removal synchronous belt 1, the waste removal ejector pins installed on the waste removal synchronous belt 1 insert into the waste paper edge. As the cardboard moves and the waste removal ejector pins rotate, the waste paper edge is removed from the cardboard, completing the waste removal process. When processing a batch of cardboard boxes, and then switching to another batch of cardboard boxes of different sizes and shapes, the waste removal pins that do not correspond to the waste paper edges of this batch must be removed. Then, the waste removal pins must be reinstalled at the corresponding positions on the waste removal timing belt 1. The pin holes 24 are small and evenly distributed on the waste removal timing belt teeth 25 of the waste removal timing belt 1, allowing for the simultaneous installation or removal of pins through two or four pin holes 24, making operation easier.

Claims

1. A multi-combination automatic assembly and disassembly device for waste removal of cardboard in carton processing, comprising a waste removal synchronous belt (1), characterized in that: The inner side of the waste cleaning synchronous belt (1) is provided with several needle magazines (2). The needle magazines (2) contain at least one of the following: central two-needle waste cleaning ejector (3), four-needle waste cleaning ejector (4), and eccentric two-needle waste cleaning ejector (5). The outer side of the needle magazines (2) is provided with an ejector ejector mechanism (6). The upper inner side of the needle magazines (2) is provided with an ejector ejector inlet (17). The lower inner side of the needle magazines (2) is provided with an ejector ejector outlet (18). The lower outer side of the needle magazines (2) is provided with an ejector ejector mechanism inlet (19).

2. The automatic assembly and disassembly device for multiple sets of ejector pins for cardboard waste removal in carton processing according to claim 1, characterized in that: The outer side of the waste cleaning synchronous belt (1) is provided with a pin pushing mechanism (7).

3. The automatic assembly and disassembly device for multiple sets of ejector pins for cardboard waste removal in carton processing according to claim 1, characterized in that: The needle magazine (2) is equipped with a central two-needle waste removal pin positioning block (8), a four-needle waste removal pin positioning block (9), or an eccentric two-needle waste removal pin positioning block (10).

4. The automatic assembly and disassembly device for multiple sets of ejector pins for cardboard waste removal in carton processing according to claim 1, characterized in that: The ejector pin mechanism (6) and the needle magazine (2) are mounted on the base (11), the base (11) passes through the ball screw (12), and the guide shaft (13) passes through the base (11).

5. The automatic assembly and disassembly device for multiple sets of ejector pins for cardboard waste removal in carton processing according to claim 2, characterized in that: The ejector pin pushing mechanism (7) is mounted on the movable seat (14), the movable seat (14) passes through the rotating screw (15), and a guide rod (16) passes through the movable seat (14).

6. The automatic assembly and disassembly device for multiple sets of ejector pins for cardboard waste removal in carton processing according to claim 1, characterized in that: The ejector pin ejection mechanism (6) is an ejector pin ejection cylinder.

7. The automatic assembly and disassembly device for multiple sets of ejector pins for cardboard waste removal in carton processing according to claim 2, characterized in that: The ejector pin pushing mechanism (7) is an ejector pin pushing cylinder.

8. The automatic assembly and disassembly device for multiple sets of ejector pins for cardboard waste removal in carton processing according to claim 1, characterized in that: The needle magazine (2) is provided with an entry positioning block (20) at the top. The end of the entry positioning block (20) is hinged to the central two-needle waste removal pin positioning block (8), the four-needle waste removal pin positioning block (9), or the eccentric two-needle waste removal pin positioning block (10). An entry spring (21) is connected between the outer side of the entry positioning block (20) and the inner wall of the needle magazine (2).

9. The automatic assembly and disassembly device for multiple sets of ejector pins for cardboard waste removal in carton processing according to claim 1, characterized in that: The needle magazine (2) is provided with a magazine exit positioning block (22) at the bottom. The end of the magazine exit positioning block (22) is hinged to the bottom of the needle magazine (2). A magazine exit spring (23) is connected between the outer side of the magazine exit positioning block (22) and the inner wall of the needle magazine (2).

Images