Paper pressing frame device with automatic locking function

Abstract

The utility model relates to a paper pressing frame device with an automatic locking function. The paper pressing frame 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. Through the arrangement of 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 a preset position, and the safety of the device is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of paper pressing frames, in particular to a paper pressing frame device with automatic locking. Background Art

[0002] There is a paper pressing frame device on the paper feeding platform of the flat-bed die-cutting machine. Installing paper pressing wheels and paper pressing brush wheels on the paper pressing frame can enable the paper feeding platform to stably transport paper to the die-cutting part. During the transportation process, a certain pressure is required when the pressing wheel and the brush wheel contact the paper. Therefore, the paper pressing frame needs to be locked when it is pressed down. The traditional manual paper pressing frame requires manual operation of the hook to lock the paper pressing frame, which is cumbersome and troublesome. During the process of the paper feeding platform transporting paper, double-sheet alarm and paper not in place alarm will occur. In this case, it is necessary to lift the paper pressing frame to take out the problematic paper. Due to a large number of paper pressing wheels and paper pressing brush wheels installed on the paper pressing frame, plus the weight of the paper pressing frame itself, the operator of the traditional manual paper pressing frame needs to spend a lot of effort to lift it, and even needs the assistance of multiple people. After the paper pressing frame is lifted, the operator sometimes repairs or adjusts under the paper pressing frame. The traditional manual paper pressing frame or pneumatic paper pressing frame will also cause harm to the operator due to the sudden pressing down of the paper pressing frame when the air spring or cylinder fails, presenting a safety hazard.

[0003] The utility model patent with the publication number of CN103287878A discloses a paper pressing frame lifting device, which is composed 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. When the air cylinder fails, if there is no reliable locking, the device may fall off, presenting a safety hazard.

[0004] Therefore, providing a device that can automatically lock is an urgent problem to be solved at present. Content of the Utility Model

[0005] The purpose of the utility model is to overcome the defects existing in the above-mentioned prior art and provide a paper pressing frame device with automatic locking.

[0006] The purpose of the utility model can be achieved by the following technical solutions:

[0007] According to one aspect of the utility model, a paper pressing frame device with automatic locking is provided, which includes a paper pressing frame, a first cylinder and a second cylinder. The device further includes a link mechanism, a self-locking mechanism, a micro switch and a cylinder magnetic induction switch; the link mechanism is connected to the paper pressing frame, the first cylinder is connected to the link 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 pressing frame is lifted, after driving the first cylinder and triggering the cylinder magnetic induction switch, the second cylinder drives the self-locking mechanism to lock the paper pressing frame; when the paper pressing frame is pressed down, the second cylinder is driven to drive the self-locking mechanism to release the paper pressing frame, and after triggering the microswitch, the first cylinder is driven to lock the paper pressing frame.

[0009] As a preferred technical solution, the paper pressing frame includes a paper pressing frame rotating shaft and a support block B, and the paper pressing frame rotating shaft is connected to the support block B.

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

[0011] As a preferred technical solution, the link mechanism includes a link A, a link B, a rotating shaft B, a rotating shaft C and a rotating shaft D. The link A and the link B are connected through the rotating shaft C. The link B and the cross beam A are connected through the rotating shaft D. The link A and the paper pressing frame are connected through the rotating shaft 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. The rotating shaft E is located on the first cylinder fixing block. The first cylinder and the first cylinder fixing block are connected through the rotating shaft E.

[0014] As a preferred technical solution, the device further includes a lock hook fixing block, and the lock hook fixing block is fixed on the cross beam A.

[0015] As a preferred technical solution, the self-locking mechanism includes a lock hook, a lock hook swing arm and a rotating shaft A. The lock hook and the lock hook swing arm are connected through the rotating shaft A. The rotating shaft A is located on the lock hook fixing block.

[0016] As a preferred technical solution, the second cylinder includes a second cylinder output shaft, and the second cylinder output shaft is connected to the lock hook swing arm.

[0017] As a preferred technical solution, the device further includes a fixing plate and a microswitch support. The second cylinder is fixed on the cross beam A through the fixing plate; the microswitch is fixed on the cross beam A through the microswitch support.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. The utility model controls the operation of the first cylinder or the second cylinder by setting a self-locking mechanism, a connecting rod mechanism, a first cylinder, a second cylinder, a microswitch and a cylinder magnetic induction switch. The microswitch and the cylinder magnetic induction switch are used as control switches. The first cylinder and the second cylinder are used as power sources to control the self-locking mechanism and the connecting rod mechanism to perform corresponding actions, so as to lift or lower the paper pressing frame, and the paper pressing frame is locked when it reaches a predetermined position, ensuring the safety of the device.

[0020] 2. The utility model provides a supporting force and fixes the paper pressing frame by setting a lock hook fixing block when the paper pressing frame is lifted upward and the lock hook hooks the paper pressing frame. In case of a cylinder failure, the lock hook and the lock hook fixing block can still lock, ensuring safety.

[0021] 3. The utility model realizes the lifting or lowering of the paper pressing frame by setting a plurality of rotating shafts, so that the corresponding connecting components can move around the rotating shafts.

[0022] 4. The lock hook and the lock hook swing arm of the utility model are connected by a rotating shaft A, and the rotating shaft A is located on the lock hook fixing block. The lock hook swing arm and the lock hook rotate around the rotating shaft A to realize the locking or releasing of the paper pressing frame by the lock hook. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0024] Figure 2 is a schematic diagram of the lifting state structure of the utility model;

[0025] Figure 3 is a schematic diagram of the pressing-down state structure of the utility model.

[0026] 1. Sheet feeding platform; 2. Paper pressing frame; 3. Paper pressing frame rotating shaft; 4. Connecting rod A; 5. Connecting rod B; 6. Lock hook; 7. First cylinder output shaft; 8. Rotating shaft A; 9. Lock hook swing arm; 10. Second cylinder; 11. Fixed plate; 12. Lock hook fixing block; 13. Support block A; 14. Microswitch bracket; 15. Microswitch; 16. Cross beam A; 17. First cylinder fixing block; 18. Cross beam B; 19. Support block B; 20. Rotating shaft B; 21. Rotating shaft C; 22. Rotating shaft D; 23. Rotating shaft E; 24. Cylinder magnetic induction switch; 25. First cylinder. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0028] On the paper feeding platform of a flat-bed die-cutting machine, there is a paper pressing frame device. Installing paper pressing wheels and paper pressing brush wheels on the paper pressing frame can enable the paper feeding platform to stably transport paper to the die-cutting part. During the transportation process, the pressing wheels and brush wheels need a certain pressure when contacting the paper. Therefore, the paper pressing frame needs to be locked when it is pressed down. The traditional manual paper pressing frame requires manual operation of a hook to lock the paper pressing frame, which is cumbersome and troublesome. During the process of the paper feeding platform transporting paper, double-sheet alarm and paper misalignment alarm will occur. In this case, it is necessary to lift the paper pressing frame to take out the problematic paper. Since a large number of paper pressing wheels and paper pressing brush wheels are installed on the paper pressing frame, plus the weight of the paper pressing frame itself, the operator of the traditional manual paper pressing frame needs to spend a lot of effort to lift it, and even needs the assistance of multiple people. After the paper pressing frame is lifted, the operator sometimes repairs or adjusts under the paper pressing frame. The traditional manual paper pressing frame or pneumatic paper pressing frame may also cause harm to the operator due to the sudden pressing down of the paper pressing frame when the air spring or cylinder fails, posing a safety hazard.

[0029] Therefore, the present utility model provides a paper pressing frame device with automatic locking and a control method. The present utility model controls the operation of the first cylinder or the second cylinder by setting a self-locking mechanism, a link mechanism, a first cylinder, a second cylinder, a microswitch, and a cylinder magnetic induction switch. The microswitch and the cylinder magnetic induction switch are used as control switches. The first cylinder and the second cylinder are used as power sources to control the self-locking mechanism and the link mechanism to perform corresponding actions, so as to lift or press down the paper pressing frame, and the paper pressing frame is locked when it reaches a predetermined position, ensuring the safety of the device. The present utility model provides a supporting force and fixes the paper pressing frame by setting a lock hook fixing block when the lock hook hooks the paper pressing frame when the paper pressing frame is lifted upward. In case of a cylinder failure, it can still be locked through the lock hook and the lock hook fixing block, ensuring safety. The present utility model realizes the lifting or pressing down of the paper pressing frame by setting a plurality of rotating shafts so that the corresponding connecting components can move with the rotating shafts. The lock hook and the lock hook swing arm of the present utility model are connected by a rotating shaft A, and the rotating shaft A is located on the lock hook fixing block. The lock hook swing arm and the lock hook rotate through the rotating shaft A to realize the locking or releasing of the paper pressing frame by the lock hook.

[0030] Embodiment 1

[0031] As Figures 1-3 shown, a paper pressing frame device with automatic locking includes a paper pressing frame 2, a first cylinder 25, and a second cylinder 10. The device further includes a link mechanism, a self-locking mechanism, a microswitch 15, and a cylinder magnetic induction switch 24. The link mechanism is connected to the paper pressing frame 2, the first cylinder 25 is connected to the link 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 microswitch 15 is adjacent to the self-locking mechanism.

[0032] When the paper pressing frame 2 is lifted, after driving the first cylinder 25 and triggering the cylinder magnetic induction switch 24, the second cylinder 10 drives the self-locking mechanism to lock the paper pressing frame 2; when the paper pressing frame 2 is pressed down, the second cylinder 10 is driven to drive the self-locking mechanism to release the paper pressing frame 2, and after triggering the micro switch 15, the first cylinder 25 is driven to lock the paper pressing frame 2.

[0033] In this embodiment, the working process of the automatic locking includes the following steps: when the paper pressing frame 2 is lifted, the output shaft 7 of the first cylinder drives the linkage mechanism to lift the paper pressing frame 2. After the output shaft 7 of the first cylinder is fully retracted, the cylinder magnetic induction switch 24 is triggered. The output shaft of the second cylinder retracts and drives the self-locking mechanism, and the locking hook 6 hooks the paper pressing frame 2 to complete the locking; when the paper pressing frame 2 is pressed down, the output shaft of the second cylinder gradually extends to the maximum distance, the self-locking mechanism releases the paper pressing frame 2 and triggers the micro switch 15, and the output shaft 7 of the first cylinder gradually extends to the maximum distance, and the connecting rod A4 and the connecting rod B5 are completely in the vertical state to complete the locking.

[0034] The paper pressing frame 2 includes a paper pressing frame rotating shaft 3 and a support block B19, and the paper pressing frame rotating shaft 3 is connected to the support block B19.

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

[0036] In this embodiment, there are 2 support blocks B19 and 2 cross beams B18. The support blocks B19 and the cross beams B18 are fixed on the machine wall panel. Since the support blocks B19 are fixed, when the paper pressing frame 2 is lifted or pressed down, the paper pressing frame 2 rotates through the paper pressing frame rotating shaft 3, and the cross beam B18 is fixed on the machine wall panel to realize the overall positioning of the device.

[0037] The linkage mechanism includes a connecting rod A4, a connecting rod B5, a rotating shaft B20, a rotating shaft C21 and a rotating shaft D22. The connecting rod A4 and the connecting rod B5 are connected through the rotating shaft C21. The connecting rod B5 and the cross beam A16 are connected through the rotating shaft D22. The connecting rod A4 and the paper pressing frame 2 are connected through the rotating shaft B20.

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

[0039] The device further 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. 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 through the rotating shaft E23.

[0040] The device further includes a hook fixing block 12 which is fixed on the cross beam A16.

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

[0042] The device further includes a fixing plate 11 and a microswitch support 14. The second cylinder 10 is fixed on the cross beam A16 through the fixing plate 11, and the microswitch 15 is fixed on the cross beam A16 through the microswitch support 14.

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

[0044] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model shall be subject to the protection scope of the claims.

Claims

1. A paper pressing frame device with automatic locking, comprising a paper pressing frame (2), a first cylinder (25) and a second cylinder (10), characterized in that, The device further includes a linkage mechanism, a self-locking mechanism, a microswitch (15), and a cylinder magnetic induction switch (24); the linkage mechanism is connected to the paper pressing frame (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 microswitch (15) is adjacent to the self-locking mechanism; When the paper pressing frame (2) is lifted, it drives the first cylinder (25) and triggers the cylinder magnetic induction switch (24), and then the second cylinder (10) drives the self-locking mechanism to lock the paper pressing frame (2); when the paper pressing frame (2) is pressed down, it drives the second cylinder (10) to drive the self-locking mechanism to release the paper pressing frame (2), and after triggering the microswitch (15), it drives the first cylinder (25) to lock the paper pressing frame (2).

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

3. A paper pressing frame device with automatic locking according to claim 1, characterized in that, The device further includes a paper feeding platform (1), a cross beam A (16), a cross beam B (18), and a support block A (13), the cross beam B (18) is connected to the cross beam A (16) through the support block A (13), the paper pressing frame (2) is located above the paper feeding platform (1), the cross beam A (16) is connected to the linkage mechanism, and the first cylinder (25) is respectively connected to the linkage mechanism and the support block A (13).

4. A paper pressing frame device with automatic locking according to claim 3, characterized in that, The linkage mechanism includes a link A (4), a link B (5), a rotating shaft B (20), a rotating shaft C (21), and a rotating shaft D (22), the link A (4) and the link B (5) are connected through the rotating shaft C (21), the link B (5) and the cross beam A (16) are connected through the rotating shaft D (22), and the link A (4) and the paper pressing frame (2) are connected through the rotating shaft B (20).

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

6. The paper pressing frame 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), the rotating shaft E (23) is located on the first cylinder fixing block (17), and the first cylinder (25) and the first cylinder fixing block (17) are connected through the rotating shaft E (23).

7. A paper pressing frame device with automatic locking according to claim 3, characterized in that, The device further includes a lock hook fixing block (12), and the lock hook fixing block (12) is fixed on the cross beam A (16).

8. A paper pressing frame device with automatic locking according to claim 7, characterized in that, The self-locking mechanism includes a lock hook (6), a lock hook swing arm (9), and a rotating shaft A (8), the lock hook (6) and the lock hook swing arm (9) are connected through the rotating shaft A (8), and the rotating shaft A (8) is located on the lock hook fixing block (12).

9. The paper pressing frame device with automatic locking according to claim 8, characterized in that, The second cylinder (10) includes a second cylinder output shaft, and the second cylinder output shaft is connected to the lock hook swing arm (9).

10. A paper pressing frame device with automatic locking according to claim 3, characterized in that, The device further includes a fixing plate (11) and a microswitch bracket (14), the second cylinder (10) is fixed on the cross beam A (16) through the fixing plate (11); the microswitch (15) is fixed on the cross beam A (16) through the microswitch bracket (14).

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