Paper pressing frame device with automatic locking function and control method

Abstract

The invention relates to a paper pressing frame device with an automatic locking function and a control method. The device comprises a connecting rod mechanism, a self-locking mechanism, a microswitch and an air cylinder magnetic induction switch. The connecting rod mechanism is connected with the paper pressing frame, the first air cylinder is connected with the connecting rod mechanism, the air cylinder magnetic induction switch is located on the first air cylinder, the second air cylinder is connected with the self-locking mechanism, and the microswitch is adjacent to the self-locking mechanism. When the paper pressing frame is lifted, the first air cylinder is driven and the air cylinder magnetic induction switch is triggered, and then the second air cylinder drives the self-locking mechanism to lock the paper pressing frame. When the paper pressing frame is pressed down, the second air cylinder is driven to drive the self-locking mechanism to loosen the paper pressing frame, and after the microswitch is triggered, the first air cylinder is driven to lock the paper pressing frame. By arranging the self-locking mechanism, the connecting rod mechanism, the first air cylinder, the second air cylinder, the microswitch and the air cylinder magnetic induction switch, the paper pressing frame is locked when the paper pressing frame reaches the preset position, and the safety of the device is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of paper press technology, and in particular to a paper press device and control method with automatic locking. Background Technology

[0002] Flatbed die-cutting machines have a paper pressure holder on the paper feeding platform. The pressure holder is equipped with pressure rollers and brush rollers to stably deliver paper to the die-cutting section. During delivery, the pressure rollers and brush rollers require a certain amount of pressure to contact the paper; therefore, the pressure holder needs to be locked when pressed down. Traditional manual pressure holders require manual operation of hooks to lock, which is cumbersome and inconvenient. During paper delivery, double-sheet alarms or paper misplacement alarms may occur. In these situations, the pressure holder needs to be lifted to remove the problematic paper. Due to the large number of pressure rollers and brush rollers on the pressure holder, plus its own weight, traditional manual pressure holders require considerable effort from the operator, sometimes even requiring multiple people to assist. After the pressure holder is lifted, operators sometimes need to perform maintenance or adjustments underneath. Traditional manual or pneumatic pressure holders can also malfunction if the gas spring or cylinder fails, causing the pressure holder to suddenly press down and potentially injure the operator, posing a safety hazard.

[0003] The invention patent with publication number CN103287878A discloses a paper pressing frame lifting device, which consists of a paper pressing frame, a swing rod, a connecting rod, a bent connecting rod, a support column, a cylinder, and a fixed column. The working method includes the paper pressing frame lifting process and the paper pressing frame lowering process. This patent lacks an automatic locking function. If the pneumatic cylinder malfunctions and there is no reliable locking, the device may fall off, posing a safety hazard.

[0004] Therefore, providing a device and method capable of automatic locking is an urgent problem to be solved. Summary of the Invention

[0005] The purpose of this invention is to overcome the defects of the prior art by providing a paper press device and control method with automatic locking.

[0006] The objective of this invention can be achieved through the following technical solutions:

[0007] According to one aspect of the present invention, a paper press device with automatic locking is provided, comprising a paper press, a first cylinder and a second cylinder, the device further comprising a linkage mechanism, a self-locking mechanism, a micro switch and a cylinder magnetic induction switch; the linkage mechanism is connected to the paper press, the first cylinder is connected to the linkage mechanism, the cylinder magnetic induction switch is located on the first cylinder, the second cylinder is connected to the self-locking mechanism, and the micro switch is adjacent to the self-locking mechanism;

[0008] When the paper presser is raised, the first cylinder is driven and the cylinder magnetic induction switch is triggered, and the second cylinder drives the self-locking mechanism to lock the paper presser; when the paper presser is pressed down, the second cylinder is driven and the self-locking mechanism is driven to release the paper presser, and the micro switch is triggered, and the first cylinder is driven to lock the paper presser.

[0009] As a preferred technical solution, the paper presser includes a paper presser shaft and a support block B, and the paper presser shaft and the support block B are connected.

[0010] As a preferred technical solution, the device further includes a paper feeding platform, a crossbeam A, a crossbeam B, and a support block A. The crossbeam B is connected to the crossbeam A through the support block A. The paper pressing frame is located above the paper feeding platform. The crossbeam A is connected to a linkage mechanism. The first cylinder is connected to both the linkage mechanism and the support block A.

[0011] As a preferred technical solution, the linkage mechanism includes link A, link B, pivot B, pivot C, and pivot D. Link A and link B are connected by pivot C, link B and crossbeam A are connected by pivot D, and link A and paper press are connected by pivot B.

[0012] As a preferred technical solution, the first cylinder includes a first cylinder output shaft, and the first cylinder output shaft is connected to the rotating shaft C.

[0013] As a preferred technical solution, the device further includes a first cylinder fixing block and a rotating shaft E. The first cylinder fixing block is fixed on the support block A, and the rotating shaft E is located on the first cylinder fixing block. The first cylinder and the first cylinder fixing block are connected by the rotating shaft E.

[0014] As a preferred technical solution, the device further includes a locking hook fixing block, which is fixed on the crossbeam A.

[0015] As a preferred technical solution, the self-locking mechanism includes a locking hook, a locking hook swing arm, and a rotating shaft A. The locking hook and the locking hook swing arm are connected by the rotating shaft A, which is located on the locking hook fixing block. The second cylinder includes a second cylinder output shaft, which is connected to the locking hook swing arm.

[0016] As a preferred technical solution, the device further includes a fixing plate and a micro switch bracket, wherein the second cylinder is fixed to the crossbeam A by the fixing plate; and the micro switch is fixed to the crossbeam A by the micro switch bracket.

[0017] According to another aspect of the present invention, a control method is provided for a paper press device with automatic locking as described above. The automatic locking process includes the following steps: when the paper press is raised, the output shaft of the first cylinder drives the linkage mechanism to raise the paper press; after the output shaft of the first cylinder is fully retracted, it triggers the cylinder magnetic induction switch, the output shaft of the second cylinder retracts and drives the self-locking mechanism, the locking hook hooks the paper press, and the locking is completed; when the paper press is pressed down, the output shaft of the second cylinder gradually extends to the maximum distance, the self-locking mechanism releases the paper press and triggers the micro switch, the output shaft of the first cylinder gradually extends to the maximum distance, and the connecting rods A and B are completely in a vertical state, and the locking is completed.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. This invention comprises a self-locking mechanism, a linkage mechanism, a first cylinder, a second cylinder, a micro switch, and a cylinder magnetic induction switch. The micro switch and the cylinder magnetic induction switch act as control switches to control the operation of the first cylinder or the second cylinder. The first cylinder and the second cylinder act as power sources to control the self-locking mechanism and the linkage mechanism to perform corresponding actions, thereby raising or lowering the paper presser. When the paper presser reaches the predetermined position, the paper presser is locked, ensuring the safety of the device.

[0020] 2. The present invention provides support and fixes the paper presser when it is lifted and the locking hook engages with it by setting a locking hook fixing block. In the event of cylinder failure, the locking hook and locking hook fixing block can still lock the paper presser, ensuring safety.

[0021] 3. By setting multiple rotating shafts, the corresponding connecting parts can move around on the rotating shafts, thereby raising or lowering the paper presser.

[0022] 4. The locking hook and the locking hook swing arm of the present invention are connected by a rotating shaft A, which is located on the locking hook fixing block. The locking hook swing arm and the locking hook rotate through the rotating shaft A to lock the paper presser or release the paper presser. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0024] Figure 2 This is a schematic diagram of the lifted state structure of the present invention;

[0025] Figure 3 This is a schematic diagram of the compressed state structure of the present invention.

[0026] 1. Paper feeding platform; 2. Paper presser; 3. Paper presser shaft; 4. Link A; 5. Link B; 6. Locking hook; 7. First cylinder output shaft; 8. Shaft A; 9. Locking hook swing arm; 10. Second cylinder; 11. Fixing plate; 12. Locking hook fixing block; 13. Support block A; 14. Micro switch bracket; 15. Micro switch; 16. Crossbeam A; 17. First cylinder fixing block; 18. Crossbeam B; 19. Support block B; 20. Shaft B; 21. Shaft C; 22. Shaft D; 23. Shaft E; 24. Cylinder magnetic induction switch; 25. First cylinder. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0028] Flatbed die-cutting machines have a paper pressure holder on the paper feeding platform. The pressure holder is equipped with pressure rollers and brush rollers to stably deliver paper to the die-cutting section. During delivery, the pressure rollers and brush rollers require a certain amount of pressure to contact the paper; therefore, the pressure holder needs to be locked when pressed down. Traditional manual pressure holders require manual operation of hooks to lock, which is cumbersome and inconvenient. During paper delivery, double-sheet alarms or paper misplacement alarms may occur. In these situations, the pressure holder needs to be lifted to remove the problematic paper. Due to the large number of pressure rollers and brush rollers on the pressure holder, plus its own weight, traditional manual pressure holders require considerable effort from the operator, sometimes even requiring multiple people to assist. After the pressure holder is lifted, operators sometimes need to perform maintenance or adjustments underneath. Traditional manual or pneumatic pressure holders can also malfunction if the gas spring or cylinder fails, causing the pressure holder to suddenly press down and potentially injure the operator, posing a safety hazard.

[0029] Therefore, this invention provides a paper press holder device and control method with automatic locking. This invention incorporates a self-locking mechanism, a linkage mechanism, a first cylinder, a second cylinder, a micro switch, and a cylinder magnetic induction switch. The micro switch and cylinder magnetic induction switch act as control switches, controlling the operation of the first or second cylinder. The first and second cylinders act as power sources, controlling the self-locking mechanism and linkage mechanism to perform corresponding actions, raising or lowering the paper press holder. When the paper press holder reaches a predetermined position, it locks itself, ensuring the safety of the device. This invention also incorporates a locking hook fixing block. When the paper press holder is raised and the locking hook engages, it provides support and fixes the paper press holder. Even in the event of cylinder failure, the locking hook and locking hook fixing block ensure continued locking, guaranteeing safety. Finally, this invention uses multiple rotating shafts, allowing corresponding connecting components to move via these shafts, thus raising or lowering the paper press holder. The locking hook and locking hook swing arm of the present invention are connected by a rotating shaft A, which is located on the locking hook fixing block. The locking hook swing arm and locking hook rotate through the rotating shaft A to lock the paper presser or release the paper presser.

[0030] Example 1

[0031] like Figures 1-3 As shown, a paper press device with automatic locking includes a paper press 2, a first cylinder 25 and a second cylinder 10. The device also includes a linkage mechanism, a self-locking mechanism, a micro switch 15 and a cylinder magnetic induction switch 24. The linkage mechanism is connected to the paper press 2, the first cylinder 25 is connected to the linkage mechanism, the cylinder magnetic induction switch 24 is located on the first cylinder 25, the second cylinder 10 is connected to the self-locking mechanism, and the micro switch 15 is adjacent to the self-locking mechanism.

[0032] When the paper presser 2 is raised, the first cylinder 25 is driven and the cylinder magnetic induction switch 24 is triggered. Then, the second cylinder 10 drives the self-locking mechanism to lock the paper presser 2. When the paper presser 2 is pressed down, the second cylinder 10 drives the self-locking mechanism to release the paper presser 2. Then, the micro switch 15 is triggered and the first cylinder 25 is driven to lock the paper presser 2.

[0033] The automatic locking process includes the following steps: When the paper presser 2 is lifted, the first cylinder output shaft 7 drives the linkage mechanism to lift the paper presser 2. After the first cylinder output shaft 7 is fully retracted, it triggers the cylinder magnetic induction switch 24. The second cylinder output shaft retracts and drives the self-locking mechanism. The locking hook 6 hooks the paper presser 2, completing the locking. When the paper presser 2 is pressed down, the second cylinder output shaft gradually extends to the maximum distance. The self-locking mechanism releases the paper presser 2 and triggers the micro switch 15. The first cylinder output shaft 7 gradually extends to the maximum distance. The connecting rods A4 and B5 are completely in a vertical state, completing the locking.

[0034] The paper presser 2 includes a paper presser shaft 3 and a support block B19, which are connected.

[0035] The device also includes a paper feeding platform 1, a crossbeam A16, a crossbeam B18, and a support block A13. The crossbeam B18 is connected to the crossbeam A16 through the support block A13. The paper pressing frame 2 is located above the paper feeding platform 1. The crossbeam A16 is connected to a linkage mechanism. The first cylinder 25 is connected to both the linkage mechanism and the support block A13.

[0036] In this embodiment, there are two support blocks B19 and two crossbeams B18. The support blocks B19 and crossbeams B18 are fixed to the machine wall panel. Since the support blocks B19 are fixed, when the paper presser 2 is raised or lowered, the paper presser 2 rotates through the paper presser shaft 3. The crossbeams B18 are fixed to the machine wall panel to achieve the overall positioning of the device.

[0037] The linkage mechanism includes link A4, link B5, pivot B20, pivot C21 and pivot D22. Link A4 and link B5 are connected by pivot C21, link B5 and crossbeam A16 are connected by pivot D22, and link A4 and paper press 2 are connected by pivot B20.

[0038] The first cylinder 25 includes a first cylinder output shaft 7, which is connected to a rotating shaft C21.

[0039] The device also includes a first cylinder fixing block 17 and a rotating shaft E23. The first cylinder fixing block 17 is fixed on the support block A13, and the rotating shaft E23 is located on the first cylinder fixing block 17. The first cylinder 25 and the first cylinder fixing block 17 are connected by the rotating shaft E23.

[0040] The device also includes a locking hook fixing block 12, which is fixed to the crossbeam A16.

[0041] The self-locking mechanism includes a locking hook 6, a locking hook swing arm 9, and a rotating shaft A8. The locking hook 6 and the locking hook swing arm 9 are connected by the rotating shaft A8, which is located on the locking hook fixing block 12. The second cylinder 10 includes a second cylinder output shaft, which is connected to the locking hook swing arm 9.

[0042] The device also includes a fixing plate 11 and a micro switch bracket 14. The second cylinder 10 is fixed to the crossbeam A16 by the fixing plate 11; the micro switch 15 is fixed to the crossbeam A16 by the micro switch bracket 14.

[0043] In this embodiment, by using multiple connecting rods and rotating shafts, each connecting part can move during the process of lifting or pressing down the paper press 2, which facilitates the lifting or pressing down of the paper press 2.

[0044] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A paper press device with automatic locking, comprising a paper press (2), a first cylinder (25), and a second cylinder (10), characterized in that, The device also includes a linkage mechanism, a self-locking mechanism, a micro switch (15), and a cylinder magnetic induction switch (24); the linkage mechanism is connected to the paper press (2), the first cylinder (25) is connected to the linkage mechanism, the cylinder magnetic induction switch (24) is located on the first cylinder (25), the second cylinder (10) is connected to the self-locking mechanism, and the micro switch (15) is adjacent to the self-locking mechanism; When the paper presser (2) is raised, the first cylinder (25) is driven and the cylinder magnetic induction switch (24) is triggered. Then, the second cylinder (10) drives the self-locking mechanism to lock the paper presser (2). When the paper presser (2) is pressed down, the second cylinder (10) is driven and the self-locking mechanism is released to release the paper presser (2). Then, the micro switch (15) is triggered and the first cylinder (25) is driven to lock the paper presser (2).

2. The paper press device with automatic locking according to claim 1, characterized in that, The paper presser (2) includes a paper presser shaft (3) and a support block B (19), and the paper presser shaft (3) and the support block B (19) are connected.

3. The paper press device with automatic locking according to claim 1, characterized in that, The device also includes a paper feeding platform (1), a crossbeam A (16), a crossbeam B (18), and a support block A (13). The crossbeam B (18) is connected to the crossbeam A (16) through the support block A (13). The paper presser (2) is located above the paper feeding platform (1). The crossbeam A (16) is connected to a linkage mechanism. The first cylinder (25) is connected to both the linkage mechanism and the support block A (13).

4. A paper press device with automatic locking according to claim 3, characterized in that, The linkage mechanism includes link A (4), link B (5), pivot B (20), pivot C (21) and pivot D (22). Link A (4) and link B (5) are connected by pivot C (21). Link B (5) and crossbeam A (16) are connected by pivot D (22). Link A (4) and paper presser (2) are connected by pivot B (20).

5. A paper press device with automatic locking according to claim 4, characterized in that, The first cylinder (25) includes a first cylinder output shaft (7), which is connected to a rotating shaft C (21).

6. A paper press device with automatic locking according to claim 3, characterized in that, The device further includes a first cylinder fixing block (17) and a rotating shaft E (23). The first cylinder fixing block (17) is fixed on the support block A (13), and the rotating shaft E (23) is located on the first cylinder fixing block (17). The first cylinder (25) and the first cylinder fixing block (17) are connected by the rotating shaft E (23).

7. A paper press device with automatic locking according to claim 3, characterized in that, The device also includes a locking hook fixing block (12), which is fixed on the crossbeam A (16).

8. A paper press device with automatic locking according to claim 7, characterized in that, The self-locking mechanism includes a locking hook (6), a locking hook swing arm (9), and a rotating shaft A (8). The locking hook (6) and the locking hook swing arm (9) are connected by the rotating shaft A (8), which is located on the locking hook fixing block (12). The second cylinder (10) includes a second cylinder output shaft, which is connected to the locking hook swing arm (9).

9. A paper press device with automatic locking according to claim 3, characterized in that, The device also includes a fixing plate (11) and a micro switch bracket (14). The second cylinder (10) is fixed on the crossbeam A (16) by the fixing plate (11); the micro switch (15) is fixed on the crossbeam A (16) by the micro switch bracket (14).

10. A control method for a paper press device with automatic locking as described in any one of claims 1-9, characterized in that, The automatic locking process includes the following steps: When the paper presser (2) is lifted, the first cylinder output shaft (7) drives the linkage mechanism to lift the paper presser (2). After the first cylinder output shaft (7) is fully retracted, the cylinder magnetic induction switch (24) is triggered, the second cylinder output shaft retracts and drives the self-locking mechanism, and the locking hook (6) hooks the paper presser (2) to complete the locking. When the paper presser (2) is pressed down, the second cylinder output shaft gradually extends to the maximum distance, the self-locking mechanism releases the paper presser (2) and triggers the micro switch (15), the first cylinder output shaft (7) gradually extends to the maximum distance, and the connecting rod A (4) and connecting rod B (5) are completely in a vertical state to complete the locking.

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