Paper continuous grabbing mechanism for printing machine

Abstract

The utility model relates to the technical field of printing equipment, and discloses a continuous paper grabbing mechanism for a printing machine, which comprises a bottom frame, a driving component is arranged on the inner side of the bottom frame, a top frame is fixedly connected to the upper end of the bottom frame, a limiting component is fixedly connected to the lower end of the top frame, and shaft seats are arranged on two sides of the limiting component. According to the continuous paper grabbing mechanism for the printing machine, a driving assembly drives a rotating shaft to rotate, the rotating shaft drives a gear to rotate, driving teeth are meshed with an upper toothed rail firstly, and a moving ring is driven to move backwards till the driving teeth are separated from the upper toothed rail, the gear and the driving teeth continue to rotate, the driving teeth are meshed with a lower toothed rail, and the moving ring is driven to move forwards; the process is repeated until the driving teeth are separated from the lower toothed rail, the moving ring reciprocates forwards and backwards, the cross rod reciprocates along with the moving ring, the moving ring and the limiting groove are arranged, the moving ring moves along the limiting groove when moving, the limiting edge is located in the groove, the limiting effect is good, the structure is simple and ingenious, and manufacturing is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of printing equipment, in particular to a paper continuous grabbing mechanism for a printing machine. Background Art

[0002] A printing press usually consists of a plate loading, inking, pressing and paper feeding mechanism. Its working principle is to first make the printing plate with the text and image to be printed, and then install the printing plate on the printing press. Next, the printing machine will apply ink to the text and image parts on the printing plate. Finally, the ink will be transferred directly or indirectly to paper or other printing materials, thereby reproducing a printed product identical to the printing plate.

[0003] China Utility Model Patent Publication No.: CN 220282925 U, discloses: a printing paper feeding mechanism, in which the servo motor rotates during feeding, thereby driving the pressure block to rise, and then the cylinder drives the suction cup gripper to descend to grab the top paper, the brush plate can prevent two or more sheets from being grabbed at one time, and then the linear motor drives the cross plate and the suction cup gripper to move to the loading position of the printing press, but the printing paper feeding mechanism needs to use a linear motor to drive the suction cup gripper to move the paper to the loading position of the printing press, the structure is large in size, occupies a large space, and the stability of the reciprocating mechanism is insufficient. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a paper continuous grabbing mechanism for a printing press, which can effectively solve the problems in the prior art.

[0005] The technical scheme adopted by the utility model is: a continuous paper grabbing mechanism for a printing press, comprising a base frame, a driving assembly is arranged on the inner side of the base frame, a top frame is fixedly connected to the upper end of the base frame, a limiting assembly is fixedly connected to the lower end of the top frame, shaft seats are arranged on both sides of the limiting assembly, a rotating shaft is rotatably connected to the center of the shaft seat, a reciprocating assembly is arranged inside the limiting assembly, a cross bar is arranged at the lower end of the reciprocating assembly, guide grooves are fixedly connected to both sides of the limiting assembly, a guide piece is fixedly connected to the outer side of the cross bar, and a grabbing assembly is arranged on the outer side of the cross bar; the limiting assembly comprises a frame, a limiting groove, a groove and a moving groove, a limiting groove is arranged inside the frame, a groove is arranged on the inner side of the limiting groove, and a moving groove is arranged at the lower end of the frame;

[0006] The reciprocating assembly includes a gear, a driving tooth, a moving ring, a limiting edge, a lower rack, an upper rack and a connecting frame. The driving tooth is fixedly connected to the outer side of the gear, a moving ring is arranged on the outer side of the driving tooth, limiting edges are arranged on both sides of the moving ring, the lower end of the moving ring is fixedly connected to the lower rack, the upper end of the moving ring is fixedly connected to the upper rack, and the lower end of the moving ring is fixedly connected to the connecting frame.

[0007] Preferably, the driving assembly includes a reduction motor, a driving wheel, a driving belt and a driven wheel, the output end of the reduction motor is fixedly connected to the driving wheel, the outer side of the driving wheel is meshedly connected to the driving belt, and a driven wheel is arranged above the driving wheel.

[0008] Through the above technical solution, a driving assembly is provided to drive the rotating shaft to rotate and continuously grab the paper.

[0009] Preferably, the driven wheel is fixedly connected to the rotating shaft, and the rotating shaft is fixedly connected to the gear.

[0010] Through the above technical solution, the rotating shaft drives the gear to rotate, causing the cross bar to move back and forth.

[0011] Preferably, the driving tooth is meshedly connected with the lower rack, the driving tooth is meshedly connected with the upper rack, the center of the lower rack is located in front of the center of the upper rack, and the lower rack and the upper rack are centrally symmetrically arranged on the inner wall of the moving ring.

[0012] Through the above technical solution, when the gear rotates, the driving tooth first meshes with the upper rack, driving the moving ring to move backward until the driving tooth is separated from the upper rack, the gear and the driving tooth continue to rotate, the driving tooth meshes with the lower rack, driving the moving ring to move forward until the driving tooth is separated from the lower rack, repeating this process, the moving ring reciprocates forward and backward, and the cross bar reciprocates accordingly.

[0013] Preferably, the movable ring is matched with the limiting groove, the limiting edge is matched with the groove, the width of the connecting frame is the same as the width of the movable groove, the connecting frame is fixedly connected to the cross bar, and the guide member is slidably connected to the guide groove.

[0014] Through the above technical solution, a moving ring and a limiting groove are provided, and when the moving ring moves, it moves along the limiting groove, and the limiting edge is located in the groove, so the limiting effect is good.

[0015] Preferably, the grabbing assembly includes a grabbing seat, a telescopic cylinder, a pneumatic suction cup, a slide groove, a clamping block and a sliding block. The lower end of the grabbing seat is fixedly connected to the telescopic cylinder, the output end of the telescopic cylinder is fixedly connected to the pneumatic suction cup, a slide groove is provided at the rear end of the grabbing seat, a clamping block is provided at the lower end of the grabbing seat, and the front end of the clamping block is fixedly connected to the sliding block.

[0016] Through the above technical scheme, a grabbing assembly is set up, and the grabbing assembly reciprocates with the cross bar. When the cross bar is located at the front, the telescopic cylinder stroke is extended to drive the pneumatic suction cup to descend and contact the paper, and the pneumatic suction cup is started to suck and grasp the paper, and the telescopic cylinder stroke is shortened. The cross bar moves backward until it moves to the rearmost position, and then the pneumatic suction cup is closed, the paper falls, and the conveying mechanism of the printing press conveys the paper backward. The grabbing assembly reciprocates with the cross bar to continuously grab the paper. During the movement of the cross bar, the guide member slides along the guide groove to improve the stability of the movement of the cross bar.

[0017] Preferably, the slide block is matched with the slide groove, and the grab seat and the clamping block are matched with the cross bar.

[0018] Through the above technical solution, when assembling the grabbing assembly, the grabbing seat is covered on the upper end of the cross bar, the clamping block is combined with the grabbing seat from under the cross bar, the slider is inserted into the slide groove, and the grabbing seat and the clamping block are locked with bolts from the upper end and the right side of the grabbing seat. The assembly speed is fast and the position of the grabbing assembly is easy to adjust.

[0019] Compared with the prior art, the utility model provides a continuous paper grabbing mechanism for a printing press, which has the following beneficial effects:

[0020] 1. The continuous paper grabbing mechanism of the printing press is provided with a limit assembly and a reciprocating assembly. The driving assembly drives the rotating shaft to rotate, and the rotating shaft drives the gear to rotate. The driving tooth first meshes with the upper rack, driving the moving ring to move backward until the driving tooth is separated from the upper rack, and the gear and the driving tooth continue to rotate, and the driving tooth meshes with the lower rack, driving the moving ring to move forward until the driving tooth is separated from the lower rack, and repeating this process, the moving ring reciprocates forward and backward, and the crossbar reciprocates accordingly, and the moving ring and the limit groove are provided. When the moving ring moves, it moves along the limit groove, and the limit edge is located in the groove, so the limit effect is good, the reciprocating mechanism is small in size, simple and ingenious in structure, and the reciprocating mechanism adopts a mechanical structure, which has high stability and is easy to use;

[0021] 2. The printing press uses a continuous paper grabbing mechanism, which is equipped with a grabbing assembly. The grabbing assembly reciprocates with the crossbar. When the crossbar is at the front, the telescopic cylinder stroke is extended to drive the pneumatic suction cup to descend and contact the paper. The pneumatic suction cup is started to suck and grab the paper, and the telescopic cylinder stroke is shortened. The crossbar moves backward until it moves to the rear, and then the pneumatic suction cup is closed. The paper falls, and the conveying mechanism of the printing press conveys the paper backward. The grabbing assembly reciprocates with the crossbar to continuously grab the paper. During the movement of the crossbar, the guide member slides along the guide groove to improve the stability of the movement of the crossbar;

[0022] 3. The printing press uses a continuous paper grabbing mechanism. When assembling the grabbing assembly, cover the grabbing seat on the upper end of the cross bar, combine the clamping block with the grabbing seat from the bottom of the cross bar, insert the slider into the slide slot, and use bolts to lock the grabbing seat and the clamping block from the upper end and right side of the grabbing seat. The assembly speed is fast and the position of the grabbing assembly is easy to adjust. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0024] Figure 2 This is an enlarged structural diagram of the drive assembly of the utility model;

[0025] Figure 3 This is a schematic diagram of the disassembled structure of the limit assembly and the reciprocating assembly of the utility model;

[0026] Figure 4 This is a schematic diagram of the split structure of the grabbing component of the utility model;

[0027] Figure 5 It is a schematic diagram of the enlarged structure of the reciprocating component of the utility model.

[0028] Among them: 1. base frame; 4. drive assembly; 401. reduction motor; 402. drive wheel; 403. drive belt; 404. driven wheel; 5. top frame; 6. limit assembly; 601. frame; 602. limit groove; 603. groove; 604. moving groove; 7. shaft seat; 8. rotating shaft; 9. reciprocating assembly; 901. gear; 902. drive tooth; 903. moving ring; 904. limit edge; 905. lower rack; 906. upper rack; 907. connecting frame; 10. cross bar; 11. guide groove; 13. guide piece; 14. grab assembly; 1401. grab seat; 1402. telescopic cylinder; 1403. pneumatic suction cup; 1404. slide; 1405. clamp; 1406. slider. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] Embodiment 1: Figure 1-5As shown, the utility model provides a paper continuous grabbing mechanism for a printing machine, comprising a base frame 1, a driving assembly 4 is arranged inside the base frame 1, a top frame 5 is fixedly connected to the upper end of the base frame 1, a limit assembly 6 is fixedly connected to the lower end of the top frame 5, shaft seats 7 are arranged on both sides of the limit assembly 6, a rotating shaft 8 is rotatably connected to the center of the shaft seat 7, a reciprocating assembly 9 is arranged inside the limit assembly 6, a cross bar 10 is arranged at the lower end of the reciprocating assembly 9, guide grooves 11 are fixedly connected to both sides of the limit assembly 6, a guide piece 13 is fixedly connected to the outer side of the cross bar 10, and a grabbing assembly 14 is arranged outside the cross bar 10; the limit assembly 6 comprises a frame 601, a limit groove 602, a groove 603 and a moving groove 604, a limit groove 602 is arranged inside the frame 601, a groove 603 is arranged inside the limit groove 602, and a moving groove 604 is arranged at the lower end of the frame 601;

[0031] The reciprocating component 9 includes a gear 901, a driving gear 902, a moving ring 903, a limiting edge 904, a lower rack 905, an upper rack 906 and a connecting frame 907. The driving gear 902 is fixedly connected to the outer side of the gear 901, the moving ring 903 is arranged on the outer side of the driving gear 902, and limiting edges 904 are arranged on both sides of the moving ring 903. The lower end of the moving ring 903 is fixedly connected to the lower rack 905, the upper end of the moving ring 903 is fixedly connected to the upper rack 906, and the lower end of the moving ring 903 is fixedly connected to the connecting frame 907.

[0032] Specifically, the driving assembly 4 includes a reduction motor 401, a driving wheel 402, a driving belt 403 and a driven wheel 404. The output end of the reduction motor 401 is fixedly connected to the driving wheel 402, the outer side of the driving wheel 402 is meshedly connected to the driving belt 403, and the driven wheel 404 is arranged above the driving wheel 402. The advantage is that the driving assembly 4 is arranged to drive the rotating shaft 8 to rotate, so as to continuously grab the paper.

[0033] Specifically, the driven wheel 404 is fixedly connected to the rotating shaft 8, and the rotating shaft 8 is fixedly connected to the gear 901. The advantage is that the rotating shaft 8 drives the gear 901 to rotate, so that the crossbar 10 moves back and forth.

[0034] Specifically, the driving teeth 902 are meshed with the lower rack 905, the driving teeth 902 are meshed with the upper rack 906, the center of the lower rack 905 is located in front of the center of the upper rack 906, and the lower rack 905 and the upper rack 906 are centrally symmetrically arranged on the inner wall of the moving ring 903. The advantage is that when the gear 901 rotates, the driving teeth 902 first mesh with the upper rack 906, driving the moving ring 903 to move backward until the driving teeth 902 are separated from the upper rack 906, the gear 901 and the driving teeth 902 continue to rotate, the driving teeth 902 mesh with the lower rack 905, driving the moving ring 903 to move forward until the driving teeth 902 are separated from the lower rack 905, repeating this process, the moving ring 903 reciprocates forward and backward, and the cross bar 10 reciprocates accordingly.

[0035] Embodiment 2: Figure 2-5 As shown, as an improvement to the previous embodiment.

[0036] Specifically, the moving ring 903 is matched with the limiting groove 602, the limiting edge 904 is matched with the groove 603, the width of the connecting frame 907 is the same as the width of the moving groove 604, the connecting frame 907 is fixedly connected to the cross bar 10, and the guide member 13 is slidably connected to the guide groove 11. The advantage is that the moving ring 903 and the limiting groove 602 are provided, the moving ring 903 moves along the limiting groove 602 when moving, the limiting edge 904 is located in the groove 603, and the limiting effect is good.

[0037] Specifically, the grabbing assembly 14 includes a grabbing seat 1401, a telescopic cylinder 1402, a pneumatic suction cup 1403, a slide groove 1404, a clamping block 1405 and a slider 1406. The lower end of the grabbing seat 1401 is fixedly connected to the telescopic cylinder 1402, the output end of the telescopic cylinder 1402 is fixedly connected to the pneumatic suction cup 1403, the rear end of the grabbing seat 1401 is provided with a slide groove 1404, the lower end of the grabbing seat 1401 is provided with a clamping block 1405, and the front end of the clamping block 1405 is fixedly connected to the slider 1406. The advantage is that a grabbing assembly 14 is provided, and the grabbing assembly 14 reciprocates with the cross bar 10. When the cross bar 10 is located at the front, the stroke of the telescopic cylinder 1402 is extended, driving the pneumatic suction cup 1403 to descend and contact the paper, and the pneumatic suction cup 1403 is started to suck and grasp the paper, and the stroke of the telescopic cylinder 1402 is shortened. The cross bar 10 moves backward until it moves to the rear, and then the pneumatic suction cup 1403 is closed, the paper falls, and the conveying mechanism of the printing press conveys the paper backward. The grabbing assembly 14 reciprocates with the cross bar 10 to continuously grab the paper. During the movement of the cross bar 10, the guide member 13 slides along the guide groove 11 to improve the stability of the movement of the cross bar 10.

[0038] Specifically, the slider 1406 is matched with the slide groove 1404, and the grab seat 1401 and the clamping block 1405 are both matched with the cross bar 10. The advantage is that when the grab assembly 14 is assembled, the grab seat 1401 is covered on the upper end of the cross bar 10, the clamping block 1405 is combined with the grab seat 1401 from the bottom of the cross bar 10, the slider 1406 is inserted into the slide groove 1404, and the grab seat 1401 and the clamping block 1405 are locked from the upper end and the right side of the grab seat 1401 by bolts, the assembly speed is fast, and the position of the grab assembly 14 is easy to adjust.

[0039] Working principle: When assembling the grabbing assembly 14, cover the grabbing seat 1401 on the upper end of the cross bar 10, combine the clamping block 1405 with the grabbing seat 1401 from the bottom of the cross bar 10, insert the slider 1406 into the slide groove 1404, and use bolts to lock the grabbing seat 1401 and the clamping block 1405 from the upper end and right side of the grabbing seat 1401. The assembly speed is fast and the position of the grabbing assembly 14 is easy to adjust. When in use, the driving assembly 4 drives the rotating shaft 8 to rotate, and the rotating shaft 8 drives the gear 901 to rotate. The driving tooth 902 first engages with the upper rack 906, driving the moving ring 903 to move backward until the driving tooth 902 is separated from the upper rack 906, and the gear 901 and the driving tooth 902 continue to rotate, and the driving tooth 902 engages with the lower rack 905, driving the moving ring 903 to move backward. The ring 903 moves forward until the driving tooth 902 separates from the lower rack 905, and this process is repeated. The moving ring 903 moves back and forth forward and backward, and the cross bar 10 reciprocates accordingly. When the cross bar 10 is located at the front, the telescopic cylinder 1402 is extended to drive the pneumatic suction cup 1403 to descend and contact the paper. The pneumatic suction cup 1403 is started to suck and grasp the paper, and the telescopic cylinder 1402 is shortened. The cross bar 10 moves backward until it moves to the rear, and the pneumatic suction cup 1403 is closed. The paper falls, and the conveying mechanism of the printing press conveys the paper backward. The grabbing assembly 14 reciprocates with the cross bar 10 to continuously grab the paper. During the movement of the cross bar 10, the guide 13 slides along the guide groove 11 to improve the stability of the movement of the cross bar 10.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A paper continuous gripping mechanism for a printing press, comprising a base frame (1), characterized in that: A driving assembly (4) is arranged inside the bottom frame (1); a top frame (5) is fixedly connected to the top end of the bottom frame (1); a limit assembly (6) is fixedly connected to the bottom end of the top frame (5); shaft seats (7) are arranged on both sides of the limit assembly (6); a rotating shaft (8) is rotatably connected to the center of the shaft seat (7); a reciprocating assembly (9) is arranged inside the limit assembly (6); a cross bar (10) is arranged at the bottom end of the reciprocating assembly (9); guide grooves are fixedly connected to both sides of the limit assembly (6); (11), a guide member (13) is fixedly connected to the outer side of the cross bar (10), and a grab assembly (14) is arranged on the outer side of the cross bar (10); the limiting assembly (6) comprises a frame (601), a limiting groove (602), a groove (603) and a movable groove (604); a limiting groove (602) is arranged inside the frame (601), a groove (603) is arranged inside the limiting groove (602), and a movable groove (604) is arranged at the lower end of the frame (601); The reciprocating assembly (9) comprises a gear (901), a driving gear (902), a moving ring (903), a limiting edge (904), a lower rack (905), an upper rack (906) and a connecting frame (907); the driving gear (902) is fixedly connected to the outer side of the gear (901); the moving ring (903) is arranged on the outer side of the driving gear (902); limiting edges (904) are arranged on both sides of the moving ring (903); the lower end of the moving ring (903) is fixedly connected to the lower rack (905); the upper end of the moving ring (903) is fixedly connected to the upper rack (906); and the lower end of the moving ring (903) is fixedly connected to the connecting frame (907).

2. The continuous paper grabbing mechanism for a printing press according to claim 1, characterized in that: The driving assembly (4) comprises a reduction motor (401), a driving wheel (402), a driving belt (403) and a driven wheel (404); the output end of the reduction motor (401) is fixedly connected to the driving wheel (402); the outer side of the driving wheel (402) is meshingly connected to the driving belt (403); and the driven wheel (404) is arranged above the driving wheel (402).

3. The paper continuous grabbing mechanism for a printing press according to claim 2, characterized in that: The driven wheel (404) is fixedly connected to the rotating shaft (8), and the rotating shaft (8) is fixedly connected to the gear (901).

4. The continuous paper grabbing mechanism for a printing press according to claim 1, characterized in that: The driving teeth (902) are meshedly connected with the lower rack (905), and the driving teeth (902) are meshedly connected with the upper rack (906). The center of the lower rack (905) is located in front of the center of the upper rack (906). The lower rack (905) and the upper rack (906) are centrally symmetrically arranged on the inner wall of the moving ring (903).

5. The continuous paper grabbing mechanism for a printing press according to claim 1, characterized in that: The movable ring (903) is matched with the limiting groove (602), the limiting edge (904) is matched with the groove (603), the width of the connecting frame (907) is the same as the width of the movable groove (604), the connecting frame (907) is fixedly connected with the cross bar (10), and the guide member (13) is slidably connected with the guide groove (11).

6. The paper continuous grabbing mechanism for a printing press according to claim 1, characterized in that: The gripping assembly (14) comprises a gripping seat (1401), a telescopic cylinder (1402), a pneumatic suction cup (1403), a slide groove (1404), a clamping block (1405) and a sliding block (1406); the lower end of the gripping seat (1401) is fixedly connected to the telescopic cylinder (1402); the output end of the telescopic cylinder (1402) is fixedly connected to the pneumatic suction cup (1403); the rear end of the gripping seat (1401) is provided with a slide groove (1404); the lower end of the gripping seat (1401) is provided with a clamping block (1405); the front end of the clamping block (1405) is fixedly connected to the sliding block (1406).

7. The paper continuous grabbing mechanism for a printing press according to claim 6, characterized in that: The sliding block (1406) is matched with the sliding groove (1404), and the grabbing seat (1401) and the clamping block (1405) are both matched with the cross bar (10).

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