Tensioning device of photogravure press
By designing a linkage structure and adjustment device in the gravure printing press, the problem of insufficient tension during the printing transmission process is solved, and automatic adjustment and high-quality printing of the printing product are realized during the printing process.
Patent Information
- Application Number
- CN202421650591.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-12
- Publication Date
- 2025-06-06
- Estimated Expiration
- 2034-07-12
AI Technical Summary
During the printing transmission process, existing gravure printing machines are insufficiently tight due to loose guide rollers, resulting in incomplete printing.
A tensioning device for a gravure printing press is designed, including a linkage structure, a tensioning adjustment roller and a limiting ring. The automatic tensioning adjustment of the print product is achieved through the motor drive pulley and the threaded rod, and the position of the limiting ring is adjusted according to the width of the print product through the adjustment structure.
The printing products are always kept tight during the printing process, avoiding the problem of incomplete printing, and improving the processing quality of the printed products.
Smart Images
Figure CN222946365U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gravure printing machines, in particular to a tensioning device of a gravure printing machine. Background Art
[0002] The gravure printing machine is a machine that uses gravure to print. The entire plate cylinder is inked, and the ink on the blank part of the plate is scraped off with a doctor blade, leaving the ink on the image part, and then it passes through the film, and the impression cylinder is pressed on the back of the film, so that the ink in the concave part is directly transferred to the film, and finally the printed matter is stacked or rewound by winding, thus completing the printing of a printed matter.
[0003] At present, when the printed product moves between multiple guide rollers, the guide rollers will inevitably become loose, causing the printed product to become loose when transmitted between the guide rollers, and the printed product cannot be effectively tensioned. The printed product is also in a loose state when entering the printing press for printing, resulting in incomplete printing when the printing press prints on the surface of the printed product, thereby reducing the processing quality of the printed product. Utility Model Content
[0004] The purpose of the utility model is to provide a tensioning device for a gravure printing machine to solve the problems raised in the above background technology.
[0005] To achieve the above object, the utility model provides the following technical solution: a tensioning device for an intaglio printing machine, comprising an intaglio printing machine body and a box body arranged on one side of the intaglio printing machine body, and further comprising:
[0006] A linkage structure is arranged inside the box body, wherein first threaded rods are penetrated on both left and right sides of the top of the box body, a lifting sleeve is sleeved on the surface above the first threaded rod, a mounting frame is fixed on the top of the lifting sleeve, and a tensioning roller is rotatably connected to the top of the mounting frame;
[0007] A limiting ring is slidably connected to the front and rear sides of the tensioning and adjusting roller surface, and a positioning structure for adjusting the movement of the limiting ring is arranged inside the mounting frame and below the tensioning and adjusting roller.
[0008] Preferably, the linkage structure includes a motor fixed to the top of the box body, a double-groove pulley rotatably connected to the middle part of the box body, and a single-groove pulley rotatably connected to the left and right sides of the box body. The output shaft of the motor passes through the interior of the box body and is fixedly connected to the top of the double-groove pulley. The double-groove pulley is connected to the single-groove pulley through a belt.
[0009] Preferably, the bottom end of the first threaded rod passes through the interior of the box body and is fixedly connected to the top of the single-groove pulley, the thread directions of the surfaces of the first threaded rods on the left and right sides of the box body are arranged in opposite directions, and the top end of the first threaded rod extends to the interior of the lifting sleeve and is threadedly connected to the inner wall of the lifting sleeve.
[0010] Preferably, a guide groove is provided on the surface of one side of the lifting sleeve, guide rods are fixed on the left and right sides of the box body, and one side of the guide rod extends into the inside of the guide groove and is slidably connected to the inner wall of the guide groove.
[0011] Preferably, the positioning structure includes a second threaded rod, a rotating disk and a connecting block, the second threaded rod is rotatably connected to the bottom of the inner wall of the mounting bracket, and the thread directions on the front and rear sides of the surface of the second threaded rod are oppositely arranged, the rotating disk is rotatably connected to the front side of the mounting bracket, and the rear end of the rotating disk passes through the box body and is fixedly connected to the front end of the second threaded rod, the connecting block is threadedly connected to the front and rear sides of the surface of the second threaded rod, and the top of the connecting block is fixedly connected to the bottom of the limiting ring.
[0012] Preferably, a limiting block is fixed at the bottom of the connecting block, a limiting groove is provided at the bottom of the inner wall of the mounting frame, and the lower part of the limiting block extends into the interior of the limiting groove and is slidably connected to the inner wall of the limiting groove.
[0013] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0014] The utility model has a tension adjustment function. The device can automatically adjust the tension of the printed product during the printing process, so that the printed product is always in a tensioned state during printing. The device also has a guide limit function. When the device is conveying the printed product, the conveying range thereof can be adjusted according to the different widths of the printed product, so that the device can subsequently perform tension adjustment operations on the printed product. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;
[0016] Figure 2 It is a three-dimensional schematic diagram of the local structure of the utility model;
[0017] Figure 3 It is a cross-sectional view of the box body in the utility model;
[0018] Figure 4 It is a three-dimensional schematic diagram of the tensioning and adjusting roller in the utility model.
[0019] In the figure: 1. gravure printing machine body; 2. box body; 3. linkage structure; 31. motor; 32. double-groove pulley; 33. single-groove pulley; 4. first threaded rod; 5. lifting sleeve; 6. mounting frame; 7. tensioning roller; 8. limiting ring; 9. positioning structure; 91. second threaded rod; 92. rotating disk; 93. connecting block; 10. guide groove; 11. guide rod; 12. limiting groove; 13. limiting block. DETAILED DESCRIPTION
[0020] 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.
[0021] See also Figure 1-4 As shown, a tensioning device of a gravure printing machine comprises a gravure printing machine body 1 and a box body 2 arranged on one side of the gravure printing machine body 1, support legs are fixed on both sides of the bottom of the box body 2, a linkage structure 3 is arranged inside the box body 2, first threaded rods 4 are penetrated on both left and right sides of the top of the box body 2, a lifting sleeve 5 is sleeved on the surface above the first threaded rod 4, a mounting frame 6 is fixed on the top of the lifting sleeve 5, a tensioning adjustment roller 7 is rotatably connected to the top of the mounting frame 6, a limit ring 8 is slidably connected to the front and rear sides of the surface of the tensioning adjustment roller 7, and a positioning structure 9 for adjusting the movement of the limit ring 8 is arranged inside the mounting frame 6 and below the tensioning adjustment roller 7.
[0022] The linkage structure 3 includes a motor 31, a double-groove pulley 32 and a single-groove pulley 33. The motor 31 is fixed to the top of the box body 2, the double-groove pulley 32 is rotatably connected to the middle of the box body 2, and the output shaft of the motor 31 passes through the inside of the box body 2 and is fixedly connected to the top of the double-groove pulley 32. The single-groove pulley 33 is rotatably connected to the left and right sides of the box body 2, and the double-groove pulley 32 is connected to the single-groove pulley 33 through a belt. The bottom end of the first threaded rod 4 passes through the inside of the box body 2 and is connected to the top of the single-groove pulley 33. The first threaded rods 4 on the left and right sides of the box body 2 are fixedly connected, and the thread directions of the surfaces of the first threaded rods 4 on the left and right sides are opposite to each other, and the top of the first threaded rods 4 extends to the inside of the lifting sleeve 5 and is threadedly connected to the inner wall of the lifting sleeve 5. After the staff turns on the motor 31, the double-groove pulley 32 below will rotate, and the single-groove pulleys 33 on both sides will start to rotate at the same time through the belt. The first threaded rods 4 on both sides rotate in the same direction, the lifting sleeve 5 on one side will rise, and the lifting sleeve 5 on the other side will fall, so as to adjust the tension of the printed product.
[0023] A guide groove 10 is provided on the surface of one side of the lifting sleeve 5, and guide rods 11 are fixed on the left and right sides of the box body 2, and one side of the guide rod 11 extends to the inside of the guide groove 10 and is slidably connected to the inner wall of the guide groove 10. When the first threaded rod 4 rotates, the guide rods 11 on both sides can guide the lifting sleeve 5, so that the lifting sleeve 5 can only move in the up and down directions, so as to adjust the height of the tensioning adjustment roller 7 above.
[0024] The adjustment structure 9 includes a second threaded rod 91, a rotating disk 92 and a connecting block 93. The second threaded rod 91 is rotatably connected to the lower side of the inner wall of the mounting bracket 6, and the thread directions of the front and rear sides of the surface of the second threaded rod 91 are oppositely arranged. The rotating disk 92 is rotatably connected to the front side of the mounting bracket 6, and the rear end of the rotating disk 92 passes through the box body 2 and is fixedly connected to the front end of the second threaded rod 91. The connecting block 93 is threadedly connected to the front and rear sides of the surface of the second threaded rod 91, and the top of the connecting block 93 is fixedly connected to the bottom of the limiting ring 8, and the bottom of the connecting block 93 is fixed with the limiting block 13. A limiting groove 12 is provided at the bottom of the inner wall of the frame 6, and the lower part of the limiting block 13 extends to the inside of the limiting groove 12 and is slidably connected to the inner wall of the limiting groove 12. When the tensioning roller 7 transports printed products of different widths, the staff can select the rotating disk 92 on the front side, thereby causing the second threaded rod 91 to rotate, and the connecting block 93 is limited by the limiting block 13 below, so that the connecting blocks 93 on the front and rear sides of the surface of the second threaded rod 91 can move in opposite directions or in opposite directions, thereby adjusting the distance between the limiting rings 8 on both sides of the surface of the tensioning roller 7.
[0025] Working principle: When the staff uses the gravure printing machine to print, the staff passes the unprinted printed product through the surface of the right tensioning adjustment roller 7 from above and passes the printed product through the surface of the left tensioning adjustment roller 7 from below, and then pulls the printed product to connect the printed product with the gravure printing machine body 1. Then the staff opens the gravure printing machine body 1 and can start printing. Before printing the printed product, the staff can rotate the rotating disk 92 on the surface of the mounting frame 6 to adjust the position of the limit rings 8 on both sides of the surface of the tensioning adjustment roller 7. According to the width of the printed product, the limit rings 8 are adjusted to both sides of the printed product to limit and guide the printed product. When the printed product becomes loose during the printing process, the staff can turn on the motor 31 to lift the mounting frame 6 on one side above the box body 2, while the mounting frame 6 on the other side will fall. The printed product is stretched by the tensioning adjustment rollers 7 on both sides to expand the conveying length of the printed product and complete the adjustment of the tension of the printed product.
[0026] 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 tensioning device for an intaglio printing machine, comprising an intaglio printing machine body (1) and a box body (2) arranged on one side of the intaglio printing machine body (1), characterized in that: Also includes: A linkage structure (3) is arranged inside the box body (2), and first threaded rods (4) are provided on both left and right sides of the top of the box body (2), and a lifting sleeve (5) is sleeved on the surface above the first threaded rod (4), and a mounting frame (6) is fixed to the top of the lifting sleeve (5), and a tensioning roller (7) is rotatably connected to the top of the mounting frame (6); A limiting ring (8) is slidably connected to the front and rear sides of the surface of the tensioning and adjusting roller (7), and a positioning structure (9) for adjusting the movement of the limiting ring (8) is provided inside the mounting frame (6) and below the tensioning and adjusting roller (7).
2. The tensioning device of a gravure printing machine according to claim 1, characterized in that: The linkage structure (3) comprises a motor (31) fixed on the top of the box body (2), a double-groove pulley (32) rotatably connected to the middle of the box body (2), and a single-groove pulley (33) rotatably connected to the left and right sides of the box body (2), the output shaft of the motor (31) passes through the inside of the box body (2) and is fixedly connected to the top of the double-groove pulley (32), and the double-groove pulley (32) is connected to the single-groove pulley (33) through a belt.
3. The tensioning device of a gravure printing machine according to claim 2, characterized in that: The bottom end of the first threaded rod (4) penetrates into the interior of the box body (2) and is fixedly connected to the top of the single-groove pulley (33); the surface threads of the first threaded rods (4) on the left and right sides of the box body (2) are arranged in opposite directions; and the top end of the first threaded rod (4) extends into the interior of the lifting sleeve (5) and is threadedly connected to the inner wall of the lifting sleeve (5).
4. The tensioning device of a gravure printing machine according to claim 1, characterized in that: A guide groove (10) is provided on the surface of one side of the lifting sleeve (5), and guide rods (11) are fixed on the left and right sides of the box body (2), and one side of the guide rod (11) extends into the interior of the guide groove (10) and is slidably connected to the inner wall of the guide groove (10).
5. The tensioning device of a gravure printing machine according to claim 1, characterized in that: The positioning structure (9) comprises a second threaded rod (91), a rotating disk (92) and a connecting block (93); the second threaded rod (91) is rotatably connected to the lower side of the inner wall of the mounting frame (6), and the thread directions of the front and rear sides of the surface of the second threaded rod (91) are arranged in opposite directions; the rotating disk (92) is rotatably connected to the front side of the mounting frame (6), and the rear end of the rotating disk (92) passes through the box body (2) and is fixedly connected to the front end of the second threaded rod (91); the connecting block (93) is threadably connected to the front and rear sides of the surface of the second threaded rod (91), and the top of the connecting block (93) is fixedly connected to the bottom of the limiting ring (8).
6. The tensioning device of a gravure printing machine according to claim 5, characterized in that: A limiting block (13) is fixed at the bottom of the connecting block (93), a limiting groove (12) is provided at the bottom of the inner wall of the mounting frame (6), and the lower part of the limiting block (13) extends into the interior of the limiting groove (12) and is slidably connected to the inner wall of the limiting groove (12).