Protection device and paper taking and placing mechanism

Abstract

The utility model belongs to the technical field of plate production equipment, and relates to a protection device and a paper taking and placing mechanism, the protection device comprises a reflector, a photoelectric module and an upper computer, the reflector is arranged on one side face of a paper stack and used for receiving and emitting light, and the photoelectric module is linked with a suction cup and located on the other side face of the paper stack. The photoelectric module comprises a light emitter and a photoelectric sensor, in the process that the suction cup descends above the paper stack, light emitted by the photoelectric module penetrates through the space above the paper stack, then is emitted to the reflecting mirror and is reflected back to the photoelectric module by the reflecting mirror, and when the suction cup descends to a preset suction position, the light emitted by the photoelectric module is just shielded by the paper stack. The upper computer does not hinder the descending action of the suction cup when receiving an optical signal fed back by the photoelectric module, and hinders the descending action of the suction cup when receiving the conversion from the optical signal fed back by the photoelectric module to the non-optical signal. By means of the protection device, the technical problem that in the prior art, a suction cup of paper taking equipment is prone to colliding with a paper pile is solved.

Description

Technical Field

[0001] This utility model belongs to the technical field of board production equipment, specifically relating to a protective device and a paper picking and placing mechanism. Background Technology

[0002] The process of the veneer production line is as follows: first, the base paper is laid on the board feeding machine, then the board is laid on the base paper so that the bottom surface of the board is bonded to the base paper, then the face paper is laid on the board so that the top surface of the board is bonded to the face paper, and finally the whole thing is conveyed into the hot press for pressing.

[0003] In the existing technology, the suction cup used to pick up paper from the paper stack has a vertical downward movement to approach the paper stack during the paper picking process. If the equipment makes a slight error during this process, the vertical downward stroke of the suction cup will be too long, causing the suction cup to collide with the paper stack, resulting in damage to both the suction cup and the paper, causing huge economic losses and affecting production efficiency. Summary of the Invention

[0004] To address the technical problem that suction cups in existing paper-fetching devices are prone to colliding with paper stacks, this application proposes a protective device and a paper-fetching mechanism, which solves the aforementioned technical problem.

[0005] The technical solution adopted by this utility model to solve its technical problem is:

[0006] This utility model provides a protective device, comprising: a reflector disposed on one side of a paper stack for receiving and emitting light; a photoelectric module linked to a suction cup and located on the other side of the paper stack, the photoelectric module including a light emitter and a photoelectric sensor; during the descent of the suction cup above the paper stack, the light emitted by the light emitter passes through the space above the paper stack and strikes the reflector, which reflects it back to the photoelectric sensor; when the suction cup descends to a preset suction position, the light emitted by the light emitter is blocked by the paper stack; and a host computer that does not obstruct the descent of the suction cup when receiving a light signal from the photoelectric sensor, and obstructs the descent of the suction cup when receiving a transition from a light signal to a no-light signal from the photoelectric sensor.

[0007] Furthermore, it also includes a limit switch, which is linked to the suction cup and located above the paper stack. After the suction cup presses against the paper stack, it deforms and collapses. Before the suction cup collapses to its limit position, the limit switch is pressed against the paper stack and triggered, and the triggered signal is fed back to the host computer so that the host computer can block the descent of the suction cup.

[0008] Furthermore, the limit switch includes a housing and a trigger rod that swings on the housing. A roller sleeve is disposed at the end of the trigger rod away from the housing. The roller sleeve presses against the paper stack, causing the trigger rod to swing, thereby triggering the limit switch.

[0009] This utility model also provides a paper picking and placing mechanism, including: the aforementioned protective device; a paper support frame for stacking paper stacks, with a column arranged next to the paper support frame and a reflector of the protective device mounted on the column; and a paper picking device, including a paper placing platform with a lift connected to its bottom, a horizontal moving frame that moves linearly in the horizontal direction on the paper placing platform, a lifting frame that moves linearly in the vertical direction on the horizontal moving frame, and a suction cup, a photoelectric module of the protective device, and a limit switch mounted on the lifting frame.

[0010] Furthermore, the lifting frame includes a vertical plate connected to the horizontal moving frame and a flat plate connected to the bottom of the vertical plate. The flat plate is horizontally arranged, and an installation rod with a width greater than the width of the paper stack on the paper support frame is arranged on the side of the flat plate away from the vertical plate. An air pipe is mounted on the installation rod, and multiple suction cups are mounted on the body of the air pipe. The photoelectric module is mounted on the outside of one end face of the installation rod. The photoelectric module is lower than the suction cup in the vertical direction so that the photoelectric module reaches the side of the paper stack before the suction cup during the descent.

[0011] Furthermore, a vertical connecting block is disposed on the side of the plate away from the vertical plate. The connecting block has an oblong hole extending in the vertical direction. The housing of the limit switch is connected to the connecting block by means of fastening bolts and the oblong hole to adjust the relative position of the limit switch and the suction cup in the vertical direction.

[0012] Furthermore, the photoelectric module and the reflector are arranged on both sides of the paper-taking device.

[0013] Furthermore, the suction cup is a retractable corrugated suction cup.

[0014] Based on the above technical solution, the technical effects that this utility model can achieve are as follows:

[0015] The protective device of this utility model includes a photoelectric module linked to the suction cup. During the descent of the suction cup, the light emitted by the photoelectric module passes through the space above the paper stack and illuminates a reflector on the other side of the paper stack, then is reflected back to the photoelectric module. Upon receiving the reflected light, the photoelectric module sends a light signal back to the host computer. The host computer then knows that the suction cup has not yet reached the predetermined suction position and does not obstruct its descent. The photoelectric module continues to descend with the suction cup until the light emitted by the photoelectric module just illuminates the side of the paper stack (i.e., the thickness surface of the paper stack). The light is then blocked by the paper stack and cannot reach the reflector, preventing it from returning to the photoelectric module. During this process, the information received by the host computer from the photoelectric module changes from a light signal to a signal indicating light. Without a light signal, the host computer detects that the suction cup located above the paper stack has descended to the preset suction position, obstructing the descent of the suction cup. The descent of the suction cup stops, and it begins to pick up paper from the paper stack. The photoelectric module and the reflector work together to indicate to the host computer that the suction cup has reached the preset suction position and cannot be allowed to continue descending. On the other hand, it can also assist the host computer in controlling the suction cup, allowing the host computer to control the suction cup to complete the transition from descent to suction in the shortest possible time, thus assisting in the completion of the paper picking action. In summary, the protective device of this utility model not only solves the technical problem of suction cups in existing paper picking equipment easily colliding with paper stacks, but also assists the paper picking equipment, making the paper picking action faster and smoother, and improving production efficiency. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the paper feeding and dispensing mechanism of this utility model;

[0017] Figure 2 for Figure 1 A magnified view of part A in the middle;

[0018] Figure 3 This is a schematic diagram of the paper-taking device of the paper-taking and placing mechanism of this utility model;

[0019] Figure 4 for Figure 3 A magnified view of part B in the middle section;

[0020] Figure 5 This is a schematic diagram from another perspective of the paper picking and placing mechanism of this utility model.

[0021] In this utility model: 1-reflector;

[0022] 2-Optical module;

[0023] 3-Limit switch, 31-Box, 32-Trigger rod, 33-Roller sleeve;

[0024] 4-Paper holder, 41-Paper stack, 42-Column;

[0025] 5-Paper feeding device, 51-Elevator, 52-Paper feeding platform, 53-Horizontal moving frame, 54-Elevating frame, 541-Vertical plate, 542-Flat plate, 543-Mounting rod, 544-Connecting block, 545-Oval hole, 55-Suction cup. Detailed Implementation

[0026] 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. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0027] like Figure 1-5 As shown, this utility model provides a protective device, including a reflector 1, a photoelectric module 2, and a host computer. The reflector 1 is disposed on one side of the paper stack 41 for receiving and emitting light. The photoelectric module 2 is linked with the suction cup 55 and is located on the other side of the paper stack 41. The photoelectric module 2 includes a light emitter and a photoelectric sensor. During the process of the suction cup 55 descending above the paper stack 41, the light emitted by the light emitter passes through the space above the paper stack 41 and is reflected back to the photoelectric sensor by the reflector 1. When the suction cup 55 descends to the preset suction position, the light emitted by the light emitter is blocked by the paper stack 41. When the host computer receives the light signal feedback from the photoelectric sensor, it does not hinder the descent of the suction cup 55. When the host computer receives the change from the light signal to the no-light signal feedback from the photoelectric sensor, it hinders the descent of the suction cup 55.

[0028] The protective device of this utility model also provides a second layer of protection structure, which includes a limit switch 3. The limit switch 3 is linked to the suction cup 55 and is located above the paper stack 41. After the suction cup 55 presses against the paper stack 41, it deforms and collapses. Before the suction cup 55 collapses to its limit position, the limit switch 3 is pressed against the paper stack 41 and is triggered, and the triggered signal is fed back to the host computer so that the host computer can block the descent of the suction cup 55.

[0029] In one specific embodiment of this utility model, the limit switch 3 includes a housing 31 and a trigger rod 32 that swings on the housing 31. A roller sleeve 33 is provided at the end of the trigger rod 32 away from the housing 31. The roller sleeve 33 presses against the paper stack 41, causing the trigger rod 32 to swing, thereby triggering the limit switch 3. The roller sleeve 33 is a non-metallic part, and when pressed against the paper stack 41, it does not damage the paper on the paper stack 41.

[0030] This utility model also provides a paper picking and placing mechanism, including the above-mentioned protective device, paper holder 4 and paper picking device 5. The paper holder 4 is used to stack paper stacks 41. In this embodiment, the paper holder 4 is a double-layer paper holder 4, which can stack two stacks of paper stacks 41. A column 42 is arranged next to the paper holder 4. A reflector 1 of the protective device is arranged on the column 42. The paper picking device 5 includes a paper placing platform 52 with a lift 51 connected to the bottom. A horizontal moving frame 53 that moves linearly in the horizontal direction is arranged on the paper placing platform 52. A lifting frame 54 that moves linearly in the vertical direction is arranged on the horizontal moving frame 53. A suction cup 55, a photoelectric module 2 of the protective device and a limit switch 3 are arranged on the lifting frame 54.

[0031] The operation flow of the paper loading and unloading mechanism of this utility model is as follows: The paper loading platform 52 moves vertically under the action of the elevator 51, so that the suction cup 55 on the paper loading platform 52 is higher than the paper stack 41. The horizontal moving frame 53 moves linearly in the horizontal direction, so that the suction cup 55 and the limit switch 3 move to directly above the paper stack 41. The linked photoelectric module 2 moves to the side and above the paper stack 41. The elevator 51 controls the suction cup 55 to descend until the light emitted by the photoelectric module 2 is blocked by the side of the paper stack 41 and cannot illuminate the reflector 1 on the other side of the paper stack 41. The host computer receives the feedback signal from the photoelectric module 2. When the light changes from on to off, the host computer controls the lifting mechanism 51 to stop the suction cup 55 from descending, allowing the suction cup 55, which is already in the preset suction position, to begin adsorbing the paper. After the suction cup 55 has adsorbed the paper, the lifting frame 54 controls the suction cup 55 to rise, and the horizontal moving frame 53 moves in the opposite direction in the horizontal direction, so that the suction cup 55 returns to the top of the paper feeding platform 52. The lifting frame 54 controls the suction cup 55 to descend, and the descending suction cup 55 releases the paper, allowing the paper to fall onto the paper feeding platform 52, thus completing the process of moving a single sheet of paper from the paper stack 41 of the paper holder 4 to the paper feeding platform 52 of the paper taking device 5.

[0032] In one specific embodiment of this utility model, the lifting frame 54 includes a vertical plate 541 connected to the horizontal moving frame 53 and a flat plate 542 connected to the bottom of the vertical plate 541. The vertical plate 541 and the flat plate 542 are reinforced by diagonal bracing. The flat plate 542 is horizontally configured. On the side of the flat plate 542 away from the vertical plate 541, there is an installation rod 543 with a width greater than the width of the paper stack 41 on the paper support frame 4. An air pipe is mounted on the installation rod 543, and multiple suction cups 55 are mounted on the body of the air pipe. A photoelectric module 2 is installed on the outside of one end face of the installation rod 543 so that when the suction cup 55 reaches directly above the paper stack 41, the photoelectric module 2 can be above the side of the paper stack 41. Thus, during the subsequent descent of the suction cup 55, the photoelectric module 2 will not collide with the paper stack 41. The photoelectric module 2 is lower than the suction cup 55 in the vertical direction so that the photoelectric module 2 reaches the side of the paper stack 41 before the suction cup 55 during the descent, thereby serving as a prompt to the host computer.

[0033] In one specific embodiment of this utility model, a vertical connecting block 544 is disposed on the side of the flat plate 542 away from the vertical plate 541. The connecting block 544 has an oblong hole 545 extending vertically. The housing 31 of the limit switch 3 is connected to the connecting block 544 by means of fastening bolts and the oblong hole 545 to adjust the relative position of the limit switch 3 and the suction cup 55 in the vertical direction, thereby facilitating installation and debugging by installers. Preferably, the limit switch 3 is installed on the side of the suction cup 55 facing away from the paper stack 41.

[0034] In a preferred embodiment of the present invention, the photoelectric module 2 and the reflector 1 are arranged on both sides of the paper taking device 5. Furthermore, the light emitted by the photoelectric module 2 coincides with the diagonal of the paper on the paper stack 41.

[0035] In a preferred embodiment of this utility model, the suction cup 55 is a retractable corrugated suction cup. After the corrugated suction cup normally picks up paper, it will collapse to a certain extent. At this time, the lowest point of the corrugated suction cup after picking up paper should be lower than the sleeve 33 of the trigger rod 32 of the limit switch 3. The lowest point of the trigger rod 32 of the limit switch 3 after being triggered and swinging should be lower than the limit position where the corrugated suction cup can collapse, thereby playing the role of protecting the suction cup 55.

[0036] It should be understood that the specific embodiments described above are only for explaining the present invention and are not intended to limit the present invention. Obvious variations or modifications derived from the spirit of the present invention are still within the protection scope of the present invention.

Claims

1. A protective device, characterized in that, include: A reflector (1) is disposed on one side of the stack of paper (41) for receiving and emitting light; The photoelectric module (2) is linked with the suction cup (55) and located on the other side of the paper stack (41). The photoelectric module (2) includes a light emitter and a photoelectric sensor. During the process of the suction cup (55) descending above the paper stack (41), the light emitted by the light emitter passes through the space above the paper stack (41) and is reflected back to the photoelectric sensor by the reflector (1). When the suction cup (55) descends to the preset suction position, the light emitted by the light emitter is blocked by the paper stack (41). The host computer does not obstruct the descent of the suction cup (55) when it receives a light signal from the photoelectric sensor, but obstructs the descent of the suction cup (55) when it receives a change from a light signal to a no-light signal from the photoelectric sensor.

2. The protection device according to claim 1, characterized in that, It also includes a limit switch (3), which is linked to the suction cup (55) and located above the paper stack (41). After the suction cup (55) presses against the paper stack (41), it deforms and collapses. Before the suction cup (55) collapses to its limit position, the limit switch (3) is pressed against the paper stack (41) and the triggered signal is fed back to the host computer so that the host computer can block the descent action of the suction cup (55).

3. The protection device according to claim 2, characterized in that, The limit switch (3) includes a housing (31) and a trigger rod (32) that swings on the housing (31). A roller sleeve (33) is provided at one end of the trigger rod (32) away from the housing (31). The roller sleeve (33) presses against the paper stack (41), causing the trigger rod (32) to swing, thereby triggering the limit switch (3).

4. A paper-picking and placing mechanism, characterized in that, include: The protection device as described in claim 3; Paper rack (4), the paper rack (4) is used to stack paper stacks (41), and a column (42) is arranged next to the paper rack (4), and a reflector (1) of the protective device is arranged on the column (42); The paper feeding device (5) includes a paper feeding platform (52) with a lift (51) connected to the bottom. The paper feeding platform (52) is equipped with a horizontal moving frame (53) that moves linearly in the horizontal direction. The horizontal moving frame (53) is equipped with a lift frame (54) that moves linearly in the vertical direction. The lift frame (54) is equipped with a suction cup (55), the photoelectric module (2) of the protection device, and a limit switch (3).

5. The paper feeding and dispensing mechanism according to claim 4, characterized in that, The lifting frame (54) includes a vertical plate (541) connected to the horizontal moving frame (53) and a flat plate (542) connected to the bottom of the vertical plate (541). The flat plate (542) is horizontally arranged. On the side of the flat plate (542) away from the vertical plate (541), there is an mounting rod (543) with a width greater than that of the paper stack (41) on the paper support frame (4). An air pipe is mounted on the mounting rod (543). Multiple suction cups (55) are mounted on the body of the air pipe. The photoelectric module (2) is mounted on the outside of one end face of the mounting rod (543). The photoelectric module (2) is lower than the suction cup (55) in the vertical direction so that the photoelectric module (2) reaches the side of the paper stack (41) before the suction cup (55) during the descent.

6. The paper feeding and dispensing mechanism according to claim 5, characterized in that, A vertical connecting block (544) is provided on the side of the plate (542) away from the vertical plate (541). The connecting block (544) has an oblong hole (545) extending in the vertical direction. The housing (31) of the limit switch (3) is connected to the connecting block (544) by means of fastening bolts and the oblong hole (545) to adjust the relative position of the limit switch (3) and the suction cup (55) in the vertical direction.

7. The paper feeding and dispensing mechanism according to claim 4, characterized in that, The photoelectric module (2) and the reflector (1) are arranged on both sides of the paper taking device (5).

8. The paper feeding and dispensing mechanism according to claim 4, characterized in that, The suction cup (55) is a retractable corrugated suction cup (55).

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