An adjustable PVC film printing roller

Abstract

This utility model discloses an adjustable PVC film printing roller, specifically relating to the field of PVC film printing roller technology. It includes a roller body, which comprises an inner roller. The surface of the inner roller is provided with a second and a fifth adjustment block for adjusting the pattern. An inner cavity is formed at the center of each end of the inner roller. A telescopic rod is fixedly connected to the bottom of the inner cavity. A fixing plate is fixedly connected to the telescopic end of the telescopic rod. A fixing rod is fixedly connected to the center of the outer wall of the fixing plate. Fixing sleeves are provided on the surfaces of both telescopic rods for fixing them after extension and retraction. A first and a sixth adjustment block are provided on the surface of one fixing sleeve, and a third and a fourth adjustment block are provided on the surface of the other fixing sleeve. This utility model achieves pattern switching by replacing the adjustment blocks and allows for the refurbishment and recycling of old blocks, solving the problem of traditional integrated printing rollers requiring complete scrapping when changing patterns.

Description

Technical Field

[0001] This utility model relates to the field of PVC film printing roller technology, specifically to an adjustable PVC film printing roller. Background Technology

[0002] PVC film, with its excellent flexibility, corrosion resistance, insulation, and cost advantages, has achieved large-scale application in industries such as packaging, building materials, electronics, and advertising. Printing, as the core value-added process of PVC film, directly determines the pattern accuracy, printing speed, and finished product yield based on the performance of the printing rollers.

[0003] Traditional PVC film printing rollers are mostly one-piece rigid structures with a roller diameter typically ranging from 80 to 500 mm. The surface pattern is fixed after being processed by electroplating, engraving, and other techniques. This structure reveals many unavoidable defects in actual production.

[0004] A search revealed, for example, a wear-resistant PVC film printing roller disclosed in Chinese patent application CN221986041U. This utility model uses two half-roller sleeves to protect the outside of the roller body. The two half-roller sleeves are made of ceramic, which has excellent wear resistance and thermal conductivity, thus providing wear protection for the roller body. This extends the service life of the roller body when printing PVC film and reduces the cost of use. At the same time, three micro fans at both ends of the half-roller sleeves enable air circulation in the heat dissipation cavity, thereby improving the heat dissipation speed of the half-roller sleeves and preventing high temperatures from reducing the wear resistance of the half-roller sleeves.

[0005] However, in practical use, because the patterns on the surface of PVC film printing rollers are relatively simple, they can only print one pattern on PVC film. With the shortening iteration cycle of aesthetic trends in the consumer market, PVC film printing patterns need to be updated every 6-12 months to maintain competitiveness. Traditional printing rollers, due to their fixed patterns, require custom-made rollers for each aesthetic upgrade, resulting in a certain degree of waste. Utility Model Content

[0006] The purpose of this invention is to provide an adjustable PVC film printing roller, which solves the problem that traditional integrated rollers need to be scrapped entirely when the pattern is changed.

[0007] To achieve the above objectives, this utility model provides the following technical solution: an adjustable PVC film printing roller, comprising a roller body, the roller body including an inner roller, the surface of the inner roller being provided with a second adjustment block and a fifth adjustment block for adjusting the pattern; an inner cavity is formed at the center of both ends of the inner roller, a telescopic rod is fixedly connected to the bottom of the inner cavity, a fixed plate is fixedly connected to the telescopic end of the telescopic rod, and a fixed rod is fixedly connected to the center of the outer wall of the fixed plate; both telescopic rods are provided with fixed sleeves on their surfaces for limiting the telescopic rods, one fixed sleeve is provided with a first adjustment block and a sixth adjustment block on its surface, and the other fixed sleeve is provided with a third adjustment block and a fourth adjustment block on its surface.

[0008] Preferably, the second adjustment block includes a second adjustment block body, one end of the second adjustment block body is provided with a plurality of fourth fixing ports, the other end of the second adjustment block body is fixedly connected with a second fixing post, and the outer wall of the second adjustment block body is symmetrically provided with fifth fixing ports.

[0009] Preferably, the first adjustment block includes a first adjustment block body, one end of which is provided with a plurality of first fixing posts, and the outer wall of the first adjustment block body is symmetrically provided with third fixing openings.

[0010] Preferably, the third adjustment block includes a third adjustment block body, one end of which has a sixth fixing port, and the outer wall of the third adjustment block body has symmetrically provided seventh fixing ports.

[0011] Preferably, the fourth adjustment block includes a fourth adjustment block body, one end of which is fixedly connected to a fourth fixing post, and the outer wall of the fourth adjustment block body is symmetrically fixedly connected to a third fixing post, the third fixing post being interference-fitted into the interior of the seventh fixing port.

[0012] Preferably, the fifth adjustment block includes a fifth adjustment block body, one end of which is fixedly connected to a sixth fixing post, and the other end of which is provided with an eighth fixing port. The outer wall of the fifth adjustment block body is symmetrically fixedly connected to the fifth fixing post, and the fifth fixing post is interference-fitted into the interior of the fifth fixing port.

[0013] Preferably, the sixth adjusting block includes a sixth adjusting block body, one end of which is provided with a ninth fixing port, and the outer wall of the sixth adjusting block body is symmetrically fixedly connected with a seventh fixing post, the seventh fixing post being interference-fitted into the interior of the third fixing port.

[0014] Preferably, the fixing sleeve includes a sleeve body, one end of which has a tenth fixing port, and the surface of the fixing plate has a second fixing port and a first fixing port sequentially formed from the center outwards, and the first fixing port and the tenth fixing port are connected internally by fixing bolts.

[0015] Preferably, the surface of the main body of the sleeve is provided with multiple ink discharge ports, and the inner walls of the first adjustment block, the second adjustment block, the third adjustment block, the fourth adjustment block, the fifth adjustment block and the sixth adjustment block are all provided with ink discharge grooves.

[0016] The technical effects and advantages provided by this utility model in the above technical solution are as follows: 1. This utility model discloses an adjustable PVC film printing roller. By splicing multiple adjustment blocks on the inner roller surface of the printing roller using a snap-fit ​​method, the printed pattern can be flexibly adjusted. The adjustment blocks have specific patterns pre-processed on their surfaces. By combining adjustment blocks with different patterns or changing the splicing arrangement of the adjustment blocks, the style and specifications of the printed pattern can be quickly switched. When it is necessary to change the printed pattern, the old adjustment block can be quickly removed and replaced with an adjustment block with a new pattern processed on its surface, achieving efficient pattern updating. 2. The present invention provides an adjustable PVC film printing roller, which has ink discharge grooves inside all the adjustment blocks. During use, a small amount of ink that enters the inner roller surface from the gaps in the adjustment blocks will pass through the discharge grooves and eventually reach both ends of the inner roller. Fixed sleeves are fixedly connected to both ends of the inner roller. Finally, the ink will enter the fixed sleeves from the ink discharge port for collection, thus avoiding ink residue from affecting the disassembly of the adjustment blocks and the accuracy of the pattern. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0019] Figure 2 for Figure 1 A schematic diagram of the structure excluding the adjustment block.

[0020] Figure 3 This is a schematic diagram of the main structure of the roller body of this utility model.

[0021] Figure 4 This is a schematic diagram of the structure of the first adjustment block, the second adjustment block, and the third adjustment block of this utility model.

[0022] Figure 5This is a schematic diagram of the second adjustment block structure of this utility model.

[0023] Figure 6 This is a schematic diagram of the structure of the fourth, fifth, and sixth adjustment blocks of this utility model.

[0024] Figure 7 This is a schematic diagram of the fifth adjustment block structure of this utility model.

[0025] Figure 8 This is a schematic diagram of the fixing sleeve structure of this utility model.

[0026] Explanation of reference numerals in the attached figures: 1. Roller body; 11. Fixing rod; 12. Fixing plate; 13. First fixing port; 14. Second fixing port; 15. Inner roller; 16. Inner cavity; 17. Telescopic rod; 2. First adjusting block; 21. First adjusting block body; 22. First fixing post; 23. Third fixing port; 3. Second adjusting block; 31. Second adjusting block body; 32. Fourth fixing port; 33. Second fixing post; 34. Fifth fixing port; 4. Third adjusting block; 41. Third adjusting block body; 42. Sixth fixing port; 43. Seventh fixed port; 5. Fourth adjusting block; 51. Main body of the fourth adjusting block; 52. Third fixed post; 53. Fourth fixed post; 6. Fifth adjusting block; 61. Main body of the fifth adjusting block; 62. Fifth fixed post; 63. Sixth fixed post; 64. Eighth fixed port; 7. Sixth adjusting block; 71. Main body of the sixth adjusting block; 72. Seventh fixed post; 73. Ninth fixed port; 8. Fixed sleeve; 81. Sleeve body; 82. Tenth fixed port; 83. Ink outlet; 9. Ink outlet groove. Detailed Implementation

[0027] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0028] This utility model provides, for example Figure 1-8 An adjustable PVC film printing roller is shown, including a roller body 1, which includes an inner roller 15. The surface of the inner roller 15 is provided with a second adjustment block 3 and a fifth adjustment block 6. The surfaces of the second adjustment block 3 and the fifth adjustment block 6 are pre-processed with specific patterns. By combining the second adjustment block 3 and the fifth adjustment block 6 with different patterns or changing the splicing arrangement of the second adjustment block 3 and the fifth adjustment block 6, the printing pattern style and specifications can be quickly switched for pattern adjustment.

[0029] To enable the printing plate roller to be installed on printing presses of different widths, an inner cavity 16 is provided at the center of both ends of the inner roller 15. A telescopic rod 17 is fixedly connected to the bottom of the inner cavity 16, and a fixing plate 12 is fixedly connected to the telescopic end of the telescopic rod 17. A fixing rod 11 is fixedly connected to the center of the outer wall of the fixing plate 12. The operator adjusts the length of the telescopic rods 17 at both ends according to the length between the mounting plates for installing the printing plate roller in the printing press, so that the fixing rod 11 can be inserted into the mounting opening of the mounting plate. This makes the printing plate roller of this application suitable for different printing presses and convenient to use.

[0030] In order to limit the telescopic rod 17, both telescopic rods 17 are provided with fixing sleeves 8 on their surfaces. The fixing sleeves 8 have various lengths. The appropriate length of fixing sleeve 8 is selected according to the extension length of the telescopic rod 17. The surface of one fixing sleeve 8 is provided with a first adjusting block 2 and a sixth adjusting block 7, and the surface of the other fixing sleeve 8 is provided with a third adjusting block 4 and a fourth adjusting block 5.

[0031] It is worth noting that, for ease of installation, a fixing rod 11 and a fixing plate 12 are attached to the surface of one of the telescopic rods 17. Before installation, the fixing rod 11 and the fixing plate 12 need to be removed.

[0032] Then install all the adjustment blocks, such as Figure 4-7 As shown, the first adjustment block 2 includes a first adjustment block body 21. One end of the first adjustment block body 21 is provided with a plurality of first fixing posts 22. The outer wall of the first adjustment block body 21 is symmetrically provided with third fixing openings 23. The first adjustment block 2 has a variety of different lengths, which are mainly selected according to the size of the fixing sleeve 8.

[0033] The second adjustment block 3 includes a second adjustment block body 31. One end of the second adjustment block body 31 is provided with a plurality of fourth fixing ports 32. The other end of the second adjustment block body 31 is fixedly connected with a second fixing post 33. The outer wall of the second adjustment block body 31 is symmetrically provided with fifth fixing ports 34.

[0034] The first fixing post 22 is interference-fitted into the fourth fixing port 32 to fix multiple second adjusting blocks 3 onto the surface of the first adjusting block 2. There are multiple second adjusting blocks 3, and the second fixing post 33 of one of the second adjusting blocks 3 is interference-fitted into the fourth fixing port 32 of another second adjusting block 3. Multiple second adjusting blocks 3 are spliced ​​together with the patterns on their surfaces.

[0035] The third adjustment block 4 includes a third adjustment block body 41. A sixth fixing port 42 is provided at one end of the third adjustment block body 41. A seventh fixing port 43 is symmetrically provided on the outer wall of the third adjustment block body 41. The second fixing post 33 of the outermost second adjustment block 3 is inserted into the sixth fixing port 42 to fix the first adjustment block 21 and multiple second adjustment blocks 3 to the ground adjustment block 4.

[0036] It should be noted that the third adjusting block 4 also comes in various lengths, and the selection is mainly based on the size of the fixing sleeve 8.

[0037] The surface of the inner roller 15 can be divided into two halves. In the other half, the fourth adjusting block 5 includes a fourth adjusting block body 51, one end of which is fixedly connected to a fourth fixing post 53, and the outer wall of the fourth adjusting block body 51 is symmetrically fixedly connected to a third fixing post 52. The fifth adjusting block 6 includes a fifth adjusting block body 61, one end of which is fixedly connected to a sixth fixing post 63, and the other end of which is provided with an eighth fixing port 64. The outer wall of the fifth adjusting block body 61 is symmetrically fixedly connected to a fifth fixing post 62. The sixth adjusting block 7 includes a sixth adjusting block body 71, one end of which is provided with a ninth fixing port 73, and the outer wall of the sixth adjusting block body 71 is symmetrically fixedly connected to a seventh fixing post 72.

[0038] There are multiple fifth adjustment blocks 6. During installation, they need to be spliced ​​in sequence according to the pattern on their surface. Specifically, the sixth fixing post 63 of one fifth adjustment block 5 is interference-fitted into the eighth fixing port 64 of another fifth adjustment block 5. After the splicing is completed, the fourth fixing post 53 is interference-fitted into the eighth fixing port 64 of the outermost fifth adjustment block 5, and the sixth fixing post 63 of the outermost fifth adjustment block 5 is interference-fitted into the ninth fixing port 73, thus completing the splicing of the other half.

[0039] After both halves are spliced ​​together, the third fixing post 52 is interference-fitted into the inside of the seventh fixing port 43, the fifth fixing post 62 is interference-fitted into the inside of the fifth fixing port 34, and the seventh fixing post 72 is interference-fitted into the inside of the third fixing port 23, thus splicing the two halves together.

[0040] After all the adjusting blocks are assembled, the entire adjusting block is fitted onto the surface of the inner roller 15. Then, because the surface of the fixing plate 12 has a second fixing port 14 and a first fixing port 13 sequentially opened from the center outwards, fixing bolts are inserted into the first fixing port 13 to fix the first adjusting block 2 and the sixth adjusting block 7 to the surface of the roller body 1. Then, the removed fixing plate 12 and fixing rod 11 are reinserted into the surface of the telescopic rod 17. By inserting fixing bolts into the first fixing port 13, the third adjusting block 4 and the fourth adjusting block 5 are fixed to the surface of the fixing plate 12 and the fixing rod 11.

[0041] After a period of use, the adjustment blocks are disassembled and replaced using the method described above, allowing for pattern replacement. For the disassembled old adjustment blocks, the old pattern coating and engraving marks can be removed using a grinding machine. Once the surface is smooth, a new pattern is re-engraved on its surface using a CNC engraving device, completing the refurbishment and reuse of the adjustment blocks. This design, which involves "replacing adjustment blocks to achieve pattern switching and refurbishing old blocks for recycling," fundamentally avoids the problem of traditional integrated printing rollers needing to be scrapped entirely due to pattern changes. This significantly reduces the waste of printing roller consumables and substantially improves the economy and resource utilization rate of printing production.

[0042] Furthermore, if an adjustment block becomes damaged during use, the damaged adjustment block can be removed using the above method, and the replacement adjustment block can be taken from the spare adjustment blocks and reinstalled without having to discard the entire adjustment block and re-carve it.

[0043] The fixing sleeve 8 includes a sleeve body 81. One end of the sleeve body 81 is provided with a tenth fixing port 82. The first fixing port 13 and the tenth fixing port 82 are connected by fixing bolts. After the above operation is completed, the two sets of fixing sleeves 8 are fixed to the fixing plates 12 on both sides by fixing bolts.

[0044] It should be noted that the adjusting block has a U-shaped sealing groove on its circumferential edge, with a built-in ink-resistant nitrile rubber sealing ring. When the adjusting block is engaged, the sealing ring is compressed to form a closed-loop seal, preventing ink from seeping into the engagement gap during printing; however, a small amount of ink may still enter the surface of the inner roller 15, therefore... Figure 4-8 As shown, the surface of the sleeve body 81 is provided with multiple ink discharge ports 83. The inner walls of the first adjustment block 2, the second adjustment block 3, the third adjustment block 4, the fourth adjustment block 5, the fifth adjustment block 6, and the sixth adjustment block 7 are all provided with ink discharge grooves 9. Even if a small amount of ink seeps in, it can be discharged through the ink discharge grooves 9 to the fixed sleeve 8 at the end of the inner roller 15, so as to avoid ink residue affecting the disassembly of the adjustment block and the accuracy of the pattern.

[0045] Although 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 can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents. The terms "comprising" or "including" as used in this invention mean that the element or object preceding the word covers the element or object listed after the word and its equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect. Terms such as "upper," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly. The technical or scientific terms used in this invention should be understood in their ordinary sense by those skilled in the art.

Claims

1. An adjustable PVC film printing roller, comprising a roller body (1), characterized in that: The roller body (1) includes an inner roller (15), and the surface of the inner roller (15) is provided with a second adjustment block (3) and a fifth adjustment block (6) for adjusting the pattern; The inner roller (15) has an inner cavity (16) at the center of both ends. A telescopic rod (17) is fixedly connected to the bottom of the inner cavity (16). A fixed plate (12) is fixedly connected to the telescopic end of the telescopic rod (17). A fixed rod (11) is fixedly connected to the center of the outer wall of the fixed plate (12). Both telescopic rods (17) are provided with fixing sleeves (8) on their surfaces to limit the telescopic rods (17). One fixing sleeve (8) is provided with a first adjusting block (2) and a sixth adjusting block (7) on its surface, and the other fixing sleeve (8) is provided with a third adjusting block (4) and a fourth adjusting block (5) on its surface.

2. The adjustable PVC film printing roller according to claim 1, characterized in that: The second adjustment block (3) includes a second adjustment block body (31), one end of the second adjustment block body (31) is provided with a plurality of fourth fixing ports (32), the other end of the second adjustment block body (31) is fixedly connected with a second fixing post (33), and the outer wall of the second adjustment block body (31) is symmetrically provided with a fifth fixing port (34).

3. The adjustable PVC film printing roller according to claim 1, characterized in that: The first adjustment block (2) includes a first adjustment block body (21), one end of which is provided with a plurality of first fixing posts (22), and the outer wall of the first adjustment block body (21) is symmetrically provided with third fixing openings (23).

4. The adjustable PVC film printing roller according to claim 1, characterized in that: The third adjustment block (4) includes a third adjustment block body (41), one end of which is provided with a sixth fixing port (42), and the outer wall of the third adjustment block body (41) is symmetrically provided with a seventh fixing port (43).

5. An adjustable PVC film printing roller according to claim 4, characterized in that: The fourth adjustment block (5) includes a fourth adjustment block body (51), one end of which is fixedly connected to a fourth fixing post (53), and the outer wall of the fourth adjustment block body (51) is symmetrically fixedly connected to a third fixing post (52), which is interference-fitted into the interior of the seventh fixing port (43).

6. An adjustable PVC film printing roller according to claim 2, characterized in that: The fifth adjustment block (6) includes a fifth adjustment block body (61), one end of which is fixedly connected to a sixth fixing post (63), and the other end of which is provided with an eighth fixing port (64). The outer wall of the fifth adjustment block body (61) is symmetrically fixedly connected to a fifth fixing post (62), and the fifth fixing post (62) is interference-fitted into the interior of the fifth fixing port (34).

7. An adjustable PVC film printing roller according to claim 3, characterized in that: The sixth adjustment block (7) includes a sixth adjustment block body (71), one end of which is provided with a ninth fixing port (73), and the outer wall of the sixth adjustment block body (71) is symmetrically fixedly connected with a seventh fixing post (72), and the seventh fixing post (72) is interference-fitted into the interior of the third fixing port (23).

8. An adjustable PVC film printing roller according to claim 1, characterized in that: The fixing sleeve (8) includes a sleeve body (81), one end of which is provided with a tenth fixing port (82). The surface of the fixing plate (12) is provided with a second fixing port (14) and a first fixing port (13) from the center outward. The first fixing port (13) and the tenth fixing port (82) are connected by fixing bolts.

9. An adjustable PVC film printing roller according to claim 8, characterized in that: The surface of the main body (81) is provided with multiple ink discharge ports (83), and the inner walls of the first adjustment block (2), the second adjustment block (3), the third adjustment block (4), the fourth adjustment block (5), the fifth adjustment block (6), and the sixth adjustment block (7) are all provided with ink discharge grooves (9).

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