Auxiliary positioning device for flattening teeth of gripper bar of printing equipment

Abstract

The utility model discloses an auxiliary positioning device for flattening teeth of a tooth row of printing equipment, which comprises connecting grooves arranged at two ends of a first clamping block, one side of each of two ends of a second clamping block is provided with an inserting block, and one side of each of two ends of the first clamping block is provided with a connecting bolt; the mounting cavity is formed in the center of the interior of the first clamping block and the center of the interior of the second clamping block, a fixing plate is arranged in the mounting cavity, a connecting plate is arranged on one side of the fixing plate, an open groove is formed in the fixing plate, a tooth row is arranged on the inner side of the open groove, a gear is arranged in the open groove, and the tooth row is connected with the gear. According to the device, stress points are provided outside the gripper bar shafts through the two semicircular clamping blocks, the fixing plates arranged on the clamping blocks stretch out to make contact with the gripper bar shafts, the gripper bar shafts of different sizes can be clamped and fixed, the gripper bar shafts can be better ejected out, and the auxiliary positioning function is achieved; the use efficiency of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of printing equipment, in particular to an auxiliary positioning device for flat teeth of a tooth bar of a printing equipment. Background Art

[0002] Printing equipment refers to machinery that processes and finishes printed sheets into finished products. It is generally categorized into three types: platemaking machinery, printing presses, and binding machinery. During printing, a printing press uses grippers to move or flip paper. The grippers must handle paper of varying thicknesses, and they are prone to wear. To prevent damage from the grippers, a low-grip method is often used to protect the printed paper. However, this method causes significant wear on the grippers, necessitating regular replacement and increasing costs. Therefore, the grippers need to be flattened to evenly distribute the gripping pressure across the grippers, making them suitable for paper of varying thicknesses.

[0003] The Chinese patent publication number is CN220841880U, and the authorization announcement date is April 26, 2024. An auxiliary positioning device for the flat teeth of the tooth bar of a printing device belongs to the technical field of the tooth bar of a printing machine; it includes a first clamping block and an extension rod. The first clamping block and the extension rod are an integrated structure. The first clamping block and the extension rod cooperate to form a spoon-shaped structure. The inner side of the first clamping block is provided with a first arc groove; the second clamping block is provided with a second arc groove on the inner side of the second clamping block. The first arc groove and the second arc groove fit together to form a ring-shaped hole for encircling the tooth bar shaft; a connecting piece is used to movably connect the first clamping block and the second clamping block; an adjusting bolt is threadedly connected to the end of the extension rod away from the first clamping block. The overall structure of the utility model is simple and easy to manufacture. It provides manufacturers with a portable tool that can open the teeth of the tooth bar by themselves, which is convenient for self-leveling tooth maintenance, reduces maintenance costs, and improves production efficiency; the opening of the tooth bar is achieved by two small devices, which is simple to operate and achieves stable positioning when the tooth bar is opened.

[0004] The existing auxiliary device uses two clamping blocks to clamp and eject the tooth bar shaft. The sizes of the two clamping blocks are fixed, and the clamping size is fixed. Only the tooth bar shaft of a fixed size can be ejected. When performing auxiliary operations on tooth bar shafts of different sizes, the firmness of the gripping of the tooth bar shaft cannot be ensured, which reduces the efficiency of the device and cannot meet the use requirements. Utility Model Content

[0005] The purpose of the utility model is to provide an auxiliary positioning device for the flat teeth of a printing device, so as to solve the problem proposed in the above background technology that the existing auxiliary device uses two clamping blocks to clamp and eject the tooth bar shaft. The sizes of the two clamping blocks are fixed, and the clamping size is fixed. Only the tooth bar shaft of a fixed size can be ejected. When performing auxiliary operations on tooth bar shafts of different sizes, the firmness of the clamping of the tooth bar shaft cannot be ensured, the efficiency of the device is reduced, and the use requirements cannot be met.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an auxiliary positioning device for a flat tooth bar of a printing device, comprising a first clamping block and a second clamping block, and further comprising:

[0007] Connecting grooves are provided at both ends of the first clamping block, one side of both ends of the second clamping block is provided with an insert block, and the insert block is fixedly connected to the second clamping block, the insert block is provided corresponding to the connecting groove, and the insert block is plugged into the first clamping block, the insert block is provided with a threaded hole, one side of both ends of the first clamping block is provided with a connecting bolt, and the connecting bolt is provided corresponding to the threaded hole, and the connecting bolt is threadedly connected to the insert block;

[0008] The mounting cavity is arranged at the center of the first clamping block and the second clamping block, and a fixing plate is provided inside the mounting cavity, a connecting plate is provided on one side of the fixing plate, and the connecting plate is fixedly connected to the fixing plate, and the fixing plate and the connecting plate are both slidably connected to the first clamping block and the second clamping block, an open groove is provided on the fixing plate, a tooth row is provided on the inner side of the open groove, and the tooth row is fixedly connected to the fixing plate, a gear is provided inside the open groove, and the gear is meshed with the tooth row, an adjusting rod is provided on one side of the first clamping block and the second clamping block, and the adjusting rod is rotatably connected to the first clamping block and the second clamping block, the adjusting rod and the gear are through-set, and the adjusting rod is fixedly connected to the gear.

[0009] Preferably, the cross-sections of the first clamping block and the second clamping block are both semicircular, the cross-section of the fixing plate is both arc-shaped, a flexible anti-slip pad is provided on one side of the fixing plate, and the flexible anti-slip pad is connected to the fixing plate as a whole.

[0010] Preferably, a pressure sensor is provided at the contact point between the flexible anti-slip pad and the fixing plate, and the pressure sensor is fixedly connected to the fixing plate.

[0011] Preferably, a first friction plate is provided at the top of the mounting cavity, and the first friction plate is fixedly connected to the first clamping block, a second friction plate is provided at the upper end of the gear, and the second friction plate is fixedly connected to the gear, the second friction plate is provided below the first friction plate, and the second friction plate is provided corresponding to the first friction plate, a compression spring is provided below the gear, and the compression spring is provided at the bottom of the mounting cavity, the two ends of the compression spring are respectively fitted with the first clamping block and the gear, one end of the adjusting rod extends to the interior of the compression spring, and the adjusting rod is slidably connected to the compression spring.

[0012] Preferably, an operating rod is provided on one side of the first clamping block, and one end of the operating rod is integrated with the first clamping block, a connecting seat is provided on one side of the operating rod, and a rotating chamber is provided on the other end of the operating rod, a connecting column is provided inside the rotating chamber, and the connecting column is rotatably connected to the operating rod, one end of the connecting column is fixedly connected to the connecting seat, a screw is provided on one side of the connecting seat, and the screw and the connecting seat are through-set, and the screw is threadedly connected to the connecting seat.

[0013] Preferably, a bearing is provided inside the rotating chamber, and the bearing is connected to the operating rod as a whole. The bearing is provided outside the connecting column, and the bearing is fitted with the connecting column. A locking bolt is provided on one side of one end of the operating rod, and the locking bolt is threadedly connected to the operating rod.

[0014] Preferably, a rubber block is provided at one end of the screw rod, and the rubber block is connected to the screw rod as a whole.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. The utility model device is provided with a first clamping block, a second clamping block, a connecting groove, an inserting block, and a connecting bolt. The first clamping block and the second clamping block can be completely separated. The first clamping block and the second clamping block can be respectively passed through the gaps on both sides of the tooth bar shaft. The inserting block is aligned with the connecting groove and inserted. The connecting bolt is screwed into the threaded hole to connect and fix the first clamping block to the second clamping block.

[0017] 2. The utility model device is provided with a fixed plate, an adjusting rod, a connecting plate, a gear, a gear row and a pressure sensor. The adjusting rod is turned to drive the gear to rotate, and the gear and the gear row are meshed and connected. As the gear rotates, the connecting plate is driven to extend and retract in the installation cavity, and the fixed plate is extended to contact the gear row shaft, clamping and fixing the gear row shaft, realizing the auxiliary positioning function of the gear row flat teeth. The pressure sensor measures the clamping force of the gear row shaft to prevent the gear row shaft from being damaged by excessive clamping, thereby ensuring the clamping and fixing effect of the gear row shaft.

[0018] 3. The utility model device is provided with an operating rod, a connecting seat, a screw, a connecting column and a locking bolt. The operating rod, the connecting seat and the screw form a lever structure. The screw is rotated to make one end of the screw contact with the bottom plate below the tooth bar, and a force is applied to the clamped tooth bar shaft to push the tooth bar shaft away. The connecting seat and the operating rod are rotatably connected through the connecting column. The installation angle of the screw can be changed by rotating the connecting column. The locking bolt limits the connecting column and fixes the connecting seat, which is convenient for pushing away the tooth bar shaft at different installation angles, thereby improving the use effect of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2This is a structural diagram of the first clamping block of the present utility model;

[0021] Figure 3 This is a structural diagram of the second clamping block of the present utility model;

[0022] Figure 4 This is a cross-sectional view of the connection between the first clamping block and the second clamping block of the utility model;

[0023] Figure 5 For the utility model Figure 4 A partial enlarged view of area A;

[0024] Figure 6 This is a diagram showing the connection relationship between the connecting plate and the first clamping block of the present invention;

[0025] Figure 7 This is a diagram showing the connection relationship between the connecting seat and the operating rod of the utility model.

[0026] In the figure: 1. First clamping block; 2. Second clamping block; 3. Connecting bolt; 4. Operating lever; 5. Connecting seat; 6. Screw; 7. Rubber block; 8. Locking bolt; 9. Fixing plate; 10. Adjusting rod; 11. Connecting groove; 12. Mounting cavity; 13. Pressure sensor; 14. Insert block; 15. Threaded hole; 16. Connecting plate; 17. Gear; 18. Open groove; 19. Gear row; 20. Flexible anti-slip pad; 21. Compression spring; 22. First friction plate; 23. Second friction plate; 24. Rotating cavity; 25. Bearing; 26. Connecting column. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] See also Figure 1-7 The utility model provides an embodiment of an auxiliary positioning device for a tooth bar of a printing device, comprising a first clamping block 1 and a second clamping block 2, and further comprising:

[0029] Connecting grooves 11 are provided at both ends of the first clamping block 1. Insert blocks 14 are provided on one side of both ends of the second clamping block 2, and the insert blocks 14 are fixedly connected to the second clamping block 2. The insert blocks 14 are provided corresponding to the connecting grooves 11 and are plugged into the first clamping block 1. Threaded holes 15 are provided on the insert blocks 14. Connecting bolts 3 are provided on one side of both ends of the first clamping block 1, and the connecting bolts 3 are provided corresponding to the threaded holes 15. The connecting bolts 3 are threadedly connected to the insert blocks 14.

[0030] The mounting cavity 12 is arranged at the center of the first clamping block 1 and the second clamping block 2. A fixing plate 9 is provided inside the mounting cavity 12. A connecting plate 16 is provided on one side of the fixing plate 9, and the connecting plate 16 is fixedly connected to the fixing plate 9. The fixing plate 9 and the connecting plate 16 are both slidingly connected to the first clamping block 1 and the second clamping block 2. An open groove 18 is provided on the fixing plate 9. A tooth row 19 is provided on the inner side of the open groove 18, and the tooth row 19 is fixedly connected to the fixing plate 9. A gear 17 is provided inside the open groove 18, and the gear 17 is meshed with the tooth row 19. An adjusting rod 10 is provided on one side of the first clamping block 1 and the second clamping block 2, and the adjusting rod 10 is rotatably connected to the first clamping block 1 and the second clamping block 2. The adjusting rod 10 and the gear 17 are through-set, and the adjusting rod 10 is fixedly connected to the gear 17.

[0031] During use: pass the first clamping block 1 and the second clamping block 2 through the gaps on both sides of the tooth bar shaft respectively, align the inserting block 14 with the connecting groove 11 and insert it, then screw the connecting bolt 3 into the threaded hole 15, connect and fix the first clamping block 1 and the second clamping block 2, rotate the adjusting rod 10 to drive the gear 17 to rotate, and the gear 17 is engaged with the tooth bar 19. As the gear 17 rotates, the connecting plate 16 is driven to expand and contract in the installation cavity 12, and the fixing plate 9 is extended to contact the tooth bar shaft, and the tooth bar shaft is clamped and fixed, realizing the auxiliary positioning function of the tooth bar flat teeth.

[0032] See also Figure 1 、 Figure 2 、 Figure 4 and Figure 5 The cross-sections of the first clamping block 1 and the second clamping block 2 are both semicircular, and the cross-sections of the fixing plates 9 are both arc-shaped. A flexible anti-slip pad 20 is provided on one side of the fixing plate 9, and the flexible anti-slip pad 20 is connected to the fixing plate 9 as a whole. The flexible anti-slip pad 20 increases the contact friction with the tooth bar shaft, improves the clamping and fixing stability of the tooth bar shaft, and also protects the clamped tooth bar shaft.

[0033] See also Figure 2 、 Figure 4 and Figure 5 A pressure sensor 13 is provided at the contact point between the flexible anti-slip pad 20 and the fixed plate 9, and the pressure sensor 13 is fixedly connected to the fixed plate 9. The clamping force of the tooth bar shaft is measured by the pressure sensor 13 to prevent the tooth bar shaft from being damaged by excessive clamping.

[0034] See also Figure 1 、 Figure 4 and Figure 6A first friction plate 22 is provided at the top of the mounting cavity 12, and the first friction plate 22 is fixedly connected to the first clamping block 1. A second friction plate 23 is provided at the upper end of the gear 17, and the second friction plate 23 is fixedly connected to the gear 17. The second friction plate 23 is arranged below the first friction plate 22, and the second friction plate 23 is arranged corresponding to the first friction plate 22. A compression spring 21 is provided below the gear 17, and the compression spring 21 is arranged at the bottom of the mounting cavity 12. The two ends of the compression spring 21 are respectively fitted with the first clamping block 1 and the gear 17. One end of the adjusting rod 10 extends into the inside of the compression spring 21, and the adjusting rod 10 is slidably connected to the compression spring 21. The compression spring 21 applies a thrust to the gear 17, so that the second friction plate 23 at the upper end of the gear 17 contacts the first friction plate 22, which limits the gear 17 and prevents the gear 17 from rotating, thereby ensuring the stability of the gripper shaft clamping.

[0035] See also Figure 1 and Figure 7 An operating rod 4 is provided on one side of the first clamping block 1, and one end of the operating rod 4 is integrated with the first clamping block 1, a connecting seat 5 is provided on one side of the operating rod 4, and a rotating chamber 24 is provided on the other end of the operating rod 4. A connecting column 26 is provided inside the rotating chamber 24, and the connecting column 26 is rotatably connected to the operating rod 4, one end of the connecting column 26 is fixedly connected to the connecting seat 5, and a screw 6 is provided on one side of the connecting seat 5, and the screw 6 and the connecting seat 5 are through-set, and the screw 6 is threadedly connected to the connecting seat 5. By rotating the screw 6, one end of it is in contact with the bottom plate below the tooth bar, and a force is applied to the clamped tooth bar axis to push the tooth bar axis away, which is convenient for subsequent flat tooth processing.

[0036] See also Figure 1 and Figure 7 A bearing 25 is provided inside the rotating chamber 24, and the bearing 25 is connected to the operating rod 4 as a whole. The bearing 25 is provided on the outside of the connecting column 26, and the bearing 25 is in contact with the connecting column 26. A locking bolt 8 is provided on one side of one end of the operating rod 4, and the locking bolt 8 is threadedly connected to the operating rod 4. By rotating the locking bolt 8, one end of the locking bolt is in contact with the outer wall of the connecting column 26, which plays a limiting role on the connecting column 26.

[0037] See also Figure 1 A rubber block 7 is provided at one end of the screw rod 6, and the rubber block 7 is connected to the screw rod 6 as a whole. When the rubber block 7 contacts the bottom plate below the tooth bar, it protects the bottom plate below the tooth bar.

[0038] 1st clamping block 1 2nd clamping block 2 Connecting bolt 3 Operating rod 4 Connecting seat 5 Screw 6 Rubber block 7 Locking bolt 8 Fixing plate 9 Adjusting rod 10 Connecting groove 11 Mounting cavity 12 Pressure sensor 13 Inserting block 14 Threaded hole 15 Connecting plate 16 Gear 17 Open groove 18 Tooth row 19 Flexible anti-skid pad 20 Compression spring 21 First friction plate 22 Second friction plate 23 Rotating cavity 24 Bearing 25 Connecting column 26

[0039] Working principle: Pass the first clamping block 1 and the second clamping block 2 through the gaps on both sides of the tooth bar shaft respectively, align the insert block 14 with the connecting groove 11 and insert it, then screw the connecting bolt 3 into the threaded hole 15 to connect and fix the first clamping block 1 and the second clamping block 2, press and turn the adjusting rod 10 to drive the gear 17 to rotate, and the gear 17 is engaged with the tooth bar 19. As the gear 17 rotates, the connecting plate 16 is driven to expand and contract in the installation cavity 12, and the fixing plate 9 is extended to contact the tooth bar shaft, clamping and fixing the tooth bar shaft; the flexible anti-skid pad 20 increases the contact friction with the tooth bar shaft, improves the clamping and fixing stability of the tooth bar shaft, and also protects the clamped tooth bar shaft, and the pressure is transmitted. The sensor 13 measures the clamping force of the tooth bar shaft to prevent the tooth bar shaft from being over-clamped and damaged; loosen the adjusting rod 10 and compress the spring 21 to apply thrust to the gear 17, so that the second friction plate 23 at the upper end of the gear 17 contacts the first friction plate 22, which limits the gear 17 and prevents the gear 17 from rotating, thereby ensuring the stability of the clamping and fixing of the tooth bar shaft; loosen the locking bolt 8 and rotate the connecting seat 5. After adjusting the angular position of the connecting seat 5, rotate the locking bolt 8 to make one end of it contact with the outer wall of the connecting column 26 to fix the connecting column 26, and rotate the screw 6 to make one end of it contact with the bottom plate below the tooth bar, apply force to the clamped tooth bar shaft, and push the tooth bar shaft away.

[0040] The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0041] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An auxiliary positioning device for a tooth row of a printing device, comprising a first clamping block (1) and a second clamping block (2), characterized in that: Also includes: A connecting groove (11) is arranged at both ends of the first clamping block (1); one side of both ends of the second clamping block (2) is provided with an insert block (14), and the insert block (14) is fixedly connected to the second clamping block (2); the insert block (14) is arranged corresponding to the connecting groove (11), and the insert block (14) is plugged into the first clamping block (1); a threaded hole (15) is arranged on the insert block (14); one side of both ends of the first clamping block (1) is provided with a connecting bolt (3), and the connecting bolt (3) and the threaded hole (15) are arranged correspondingly, and the connecting bolt (3) is threadedly connected to the insert block (14); The mounting cavity (12) is arranged at the center of the first clamping block (1) and the second clamping block (2); a fixing plate (9) is arranged inside the mounting cavity (12); a connecting plate (16) is arranged on one side of the fixing plate (9); the connecting plate (16) is fixedly connected to the fixing plate (9); the fixing plate (9) and the connecting plate (16) are both slidably connected to the first clamping block (1) and the second clamping block (2); an opening groove (18) is arranged on the fixing plate (9); a groove (18) is arranged inside the opening groove (18); A tooth row (19) is provided, and the tooth row (19) is fixedly connected to the fixing plate (9); a gear (17) is provided inside the opening groove (18), and the gear (17) is meshedly connected to the tooth row (19); an adjustment rod (10) is provided on one side of the first clamping block (1) and the second clamping block (2), and the adjustment rod (10) is rotatably connected to the first clamping block (1) and the second clamping block (2); the adjustment rod (10) and the gear (17) are interlinked, and the adjustment rod (10) and the gear (17) are fixedly connected.

2. The auxiliary positioning device for flat teeth of a printing device according to claim 1, characterized in that: The cross-sections of the first clamping block (1) and the second clamping block (2) are both semicircular, the cross-section of the fixing plate (9) is both arc-shaped, a flexible anti-skid pad (20) is provided on one side of the fixing plate (9), and the flexible anti-skid pad (20) is connected to the fixing plate (9) as a whole.

3. The auxiliary positioning device for flat teeth of a printing device according to claim 2, characterized in that: A pressure sensor (13) is provided at the contact point between the flexible anti-slip pad (20) and the fixing plate (9), and the pressure sensor (13) is fixedly connected to the fixing plate (9).

4. The auxiliary positioning device for flat teeth of a printing device according to claim 1, characterized in that: A first friction plate (22) is arranged at the top of the mounting cavity (12), and the first friction plate (22) is fixedly connected to the first clamping block (1); a second friction plate (23) is arranged at the upper end of the gear (17), and the second friction plate (23) is fixedly connected to the gear (17); the second friction plate (23) is arranged below the first friction plate (22), and the second friction plate (23) is arranged corresponding to the first friction plate (22); a compression spring (21) is arranged below the gear (17), and the compression spring (21) is arranged at the bottom of the mounting cavity (12); two ends of the compression spring (21) are respectively fitted with the first clamping block (1) and the gear (17); one end of the adjusting rod (10) extends to the inside of the compression spring (21), and the adjusting rod (10) is slidably connected to the compression spring (21).

5. The auxiliary positioning device for flat teeth of a printing device according to claim 1, characterized in that: An operating rod (4) is provided on one side of the first clamp (1), and one end of the operating rod (4) is integrally formed with the first clamp (1); a connecting seat (5) is provided on one side of the operating rod (4); a rotating chamber (24) is provided on the other end of the operating rod (4); a connecting column (26) is provided inside the rotating chamber (24), and the connecting column (26) is rotatably connected to the operating rod (4); one end of the connecting column (26) is fixedly connected to the connecting seat (5); a screw rod (6) is provided on one side of the connecting seat (5), and the screw rod (6) and the connecting seat (5) are connected through each other, and the screw rod (6) and the connecting seat (5) are threadedly connected.

6. The auxiliary positioning device for flat teeth of a printing device according to claim 5, characterized in that: A bearing (25) is arranged inside the rotating chamber (24), and the bearing (25) is connected to the operating rod (4) as a whole; the bearing (25) is arranged outside the connecting column (26), and the bearing (25) and the connecting column (26) are in close contact; a locking bolt (8) is arranged on one side of one end of the operating rod (4), and the locking bolt (8) is threadedly connected to the operating rod (4).

7. The auxiliary positioning device for flat teeth of a printing device according to claim 5, characterized in that: A rubber block (7) is provided at one end of the screw rod (6), and the rubber block (7) and the screw rod (6) are connected as a whole.

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