Split type intaglio roller

Abstract

The utility model relates to the technical field of gravure plate rollers, and discloses a split type gravure plate roller which comprises a plate roller body, a positioning shaft and a first fixing assembly, mounting rings are arranged on the inner side walls of the two ends of the plate roller body, mounting plates are arranged on the side walls of the positioning shaft, positioning blocks are further arranged on the inner side walls of the plate roller body, and the first fixing assembly is arranged on the positioning blocks. Positioning grooves for clamping the positioning blocks are formed in the side wall of the peripheral side of the mounting plate, when the mounting plate is inserted into the printing roller body and the end face of the mounting plate abuts against the mounting ring, the positioning blocks can be inserted into the positioning grooves, and the first fixing assembly is used for detachably fixing the mounting plate to the mounting ring; the gravure roller has the advantages that the printing effect of the gravure roller is improved, and meanwhile the production cost is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of gravure rollers, in particular to a split type gravure roller. BACKGROUND

[0002] In the printing industry, a roller is a key component for transferring ink, and a gravure roller mainly forms a pattern by engraving grooves on the outer wall of the roller, and then transfers ink through the grooves.

[0003] Traditional gravure rollers generally include two types of integral design and hollow rollers, wherein the integral gravure roller is fixed with shafts at both ends, the roller is simple to use, convenient to position and high in accuracy, but is high in cost, which limits its large-scale application; the hollow gravure roller is low in material consumption and cost, but is usually installed through a top cone type fixing mode, the positioning effect of the cooperation is poor, which may cause problems such as inaccurate overprinting of the printed pattern and reduced definition, and affects the quality of the printed product. CONTENT OF THE UTILITY MODEL

[0004] In order to improve the printing effect of the gravure roller and reduce the production cost, the application provides a split type gravure roller.

[0005] The application provides a split type gravure roller, which adopts the following technical scheme:

[0006] The split type gravure roller comprises a roller body, a positioning shaft and a first fixing assembly, the inner side wall of the roller body at both ends is provided with a mounting ring, the side wall of the positioning shaft is provided with a mounting plate, the inner side wall of the roller body is further provided with a positioning block, the side wall of the mounting plate is provided with a positioning groove for clamping the positioning block, when the mounting plate is inserted into the roller body and the end face of the mounting plate abuts against the mounting ring, the positioning block can be inserted into the positioning groove, and the first fixing assembly is used for detachably fixing the mounting plate on the mounting ring.

[0007] Through the clamping of the positioning block and the positioning groove, the accurate positioning of the positioning shaft and the roller body can be realized, the first fixing assembly detachably fixes the mounting plate on the mounting ring, so that the positioning shaft and the roller body can be conveniently disassembled and installed, in this way, the hollow roller can be installed on the printing equipment through the positioning shaft, the printing effect of the gravure roller is improved, and the production cost is reduced.

[0008] Optionally, a plurality of positioning blocks are circumferentially arranged on the inner side wall of the roller body, and a plurality of positioning grooves are arranged corresponding to the positioning blocks.

[0009] By adopting the above technical solution, when the printing roller body is installed with the positioning shaft, multiple positioning blocks cooperate with multiple corresponding positioning slots, increasing the number of positioning points and improving the stability and accuracy of the installation of the printing roller body and the mounting plate.

[0010] Optionally, the first fixing component is a fixing bolt, the mounting ring has a threaded hole for the fixing bolt to be threaded, and the mounting plate has a through hole for the fixing bolt to pass through. When the positioning block is inserted into the positioning groove, the through hole is aligned with the threaded hole.

[0011] By adopting the above technical solution, the mounting plate is detachably fixed to the mounting ring by passing through the through hole on the mounting plate and threading it with the threaded hole on the mounting ring. This facilitates the assembly and disassembly of the roller body and the positioning shaft. The positioning block is inserted into the positioning groove to align the through hole with the threaded hole, which ensures the accuracy of the installation position and improves the installation efficiency.

[0012] Optionally, a keyway is provided on the side wall of the end of the positioning shaft away from the printing roller body.

[0013] By adopting the above technical solution, a keyway is opened on the side wall of the positioning shaft away from the printing roller body, which can facilitate the connection between the positioning shaft and external equipment to transmit torque and ensure the stability of power transmission.

[0014] Optionally, a second fixing component is also included, wherein the mounting plate is detachably mounted on the positioning shaft, and the second fixing component is capable of fixing the mounting plate on the positioning shaft.

[0015] By adopting the above technical solution, the mounting plate can be detachably mounted on the positioning shaft. The second fixing component is used to fix the mounting plate on the positioning shaft, which makes it easy to disassemble and replace the mounting plate. By replacing the mounting plate with different sizes, it can adapt to different sizes of printing roller bodies, thereby further reducing production costs.

[0016] Optionally, the second fixing component includes a positioning ring and a clamping ring. The positioning ring is fixedly disposed on the positioning shaft. One end of the positioning shaft inserted into the printing roller body is provided with an external thread. The inner sidewall of the clamping ring is provided with an internal thread. The clamping ring can be threadedly connected to the positioning shaft and clamp the mounting plate between itself and the positioning ring.

[0017] By adopting the above technical solution, the mounting plate of the split gravure printing roller can be detachably installed on the positioning shaft through the cooperation of the clamping ring and the positioning ring, which facilitates the replacement and maintenance of the mounting plate, while ensuring the stability of the mounting plate on the positioning shaft.

[0018] Optionally, a limiting block is provided on the side wall of the positioning shaft, and a limiting groove is provided on the inner side wall of the mounting plate for the limiting block to be inserted.

[0019] By adopting the technical scheme, the limiting block is inserted into the limiting groove to prevent the mounting plate from rotating relative to the positioning shaft and to play a role of transmitting torque, thereby further improving the stability and reliability of the connection between the mounting plate and the positioning shaft.

[0020] Optionally, the second fixing assembly further comprises an anti-disengagement piece for limiting loosening of the abutting ring.

[0021] Optionally, the anti-disengagement piece comprises an abutting bolt and an abutting block, one end of the positioning shaft inserted into the plate roller body is provided with a sliding groove for sliding of the abutting block towards the direction of approaching or moving away from the positioning ring, the side of the abutting block away from the positioning ring is provided with a sunken groove for insertion of the abutting bolt, the columnar part of the abutting bolt can be screwed through the end part of the positioning shaft and inserted into the sunken groove, and the both end parts of the abutting block extend out of the sliding groove.

[0022] By adopting the technical scheme, the abutting bolt and the abutting block of the anti-disengagement piece can limit loosening of the abutting ring by rotating the abutting bolt to push the abutting block to slide in the sliding groove and extend out of the sliding groove, thereby ensuring the fixing effect of the second fixing assembly and the overall stability of the plate roller.

[0023] In summary, the present application has at least one of the following beneficial effects:

[0024] 1. The plate roller body and the positioning shaft are arranged separately, which facilitates assembly with different plate roller bodies, improves the precision during printing of the gravure printing roller, and reduces production cost.

[0025] 2. By detachably mounting the mounting plate on the positioning shaft, different mounting plates can be replaced to adapt to plate roller bodies of different sizes, thereby further reducing production cost. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a structural schematic diagram of embodiment 1;

[0027] Figure 2 is an exploded structural schematic diagram of the positioning shaft;

[0028] Figure 3 is a structural schematic diagram of embodiment 2;

[0029] Figure 4 is an exploded structural schematic diagram of the anti-disengagement piece.

[0030] Explanation of reference signs: 1, plate roller body; 11, positioning block; 2, positioning shaft; 21, key groove; 22, limiting block; 23, sliding groove; 3, first fixing assembly; 31, fixing bolt; 4, mounting ring; 41, threaded hole; 5, mounting plate; 51, positioning groove; 52, through hole; 53, limiting groove; 6, second fixing assembly; 61, positioning ring; 62, abutting ring; 63, anti-dropping piece; 631, abutting bolt; 632, abutting block. DETAILED DESCRIPTION

[0031] The following will be described in detail with reference to the accompanying drawings. Figures 1-4 The application is further described in detail.

[0032] Embodiment 1

[0033] The embodiment of the application discloses a split type gravure roller. Referring to Figure 1 , the gravure roller comprises a plate roller body 1, a positioning shaft 2 and a first fixing assembly 3, wherein the positioning shaft 2 is detachably installed at both ends of the plate roller body 1 through the first fixing assembly 3, and when the gravure roller is used, the gravure roller can be installed on a printing device through the positioning shaft 2, so that the design can not only reduce the manufacturing cost, but also ensure good positioning effect, and the problems of high cost of traditional integral type plate roller and poor positioning of hollow plate roller are avoided.

[0034] Referring to Figure 1 and Figure 2 , specifically, the plate roller body 1 is in a long cylindrical structure, and mounting rings 4 are arranged on the inner side walls at both ends of the plate roller body 1. The mounting rings 4 can be fixed on the inner side walls of the plate roller body 1 by welding, one-piece forming or the like, and are usually in a ring shape, and the material can be selected as the same metal material as the inner ring of the plate roller body 1, such as steel or the like.

[0035] A mounting plate 5 is coaxially arranged on the side wall of the positioning shaft 2, and in the embodiment, the mounting plate 5 is fixedly connected with the positioning shaft 2 by welding or the like; the mounting plate 5 is a circular plate, and the outer diameter of the mounting plate 5 is matched with the inner diameter of the plate roller body 1. The positioning blocks 11 can also be fixedly arranged on the inner side walls of the plate roller body 1 by embedding, welding or the like, for example, the positioning blocks 11 are pre-processed and then embedded into the reserved grooves in the inner side walls of the plate roller body 1. The positioning grooves 51 for clamping the positioning blocks 11 are arranged on the side walls of the mounting plate 5. The shape of the positioning grooves 51 is matched with that of the positioning blocks 11, and when the mounting plate 5 is inserted into the plate roller body 1 and the end face of the mounting plate 5 towards the plate roller body 1 abuts against the end face of the mounting ring 4, the positioning blocks 11 can be inserted into the positioning grooves 51.

[0036] When the positioning shaft 2 and the mounting plate 5 rotate, the plate roller can be driven to rotate through the cooperation of the positioning block 11 and the positioning groove 51. Preferably, a plurality of positioning blocks 11 are arranged circumferentially along the inner side wall of the plate roller body 1, and a plurality of positioning grooves 51 are arranged corresponding to the positioning blocks 11; the arrangement of the plurality of positioning blocks 11 and the positioning grooves 51 can further improve the stability of the connection and better ensure the concentricity of the positioning shaft 2 and the plate roller body 1 during installation.

[0037] Referring to Figure 1 and Figure 2 In the embodiment, the first fixing assembly 3 is used to detachably fix the mounting plate 5 to the mounting ring 4. Specifically, the first fixing assembly 3 is preferably a fixing bolt 31, the mounting ring 4 is provided with a threaded hole 41 for threadedly connecting the fixing bolt 31, and the mounting plate 5 is provided with a through hole 52 for the fixing bolt 31 to pass through. When the positioning block 11 is inserted into the positioning groove 51, the through hole 52 is aligned with the threaded hole 41. By tightening the fixing bolt 31, the mounting plate 5 can be firmly fixed to the mounting ring 4, and reliable connection of the positioning shaft 2 and the plate roller body 1 is achieved.

[0038] The positioning shaft 2 is provided with a key groove 21 on the end side wall away from the plate roller body 1. The key groove 21 is used to facilitate connection with other transmission components and achieve stable power transmission.

[0039] The implementation principle of the split type intaglio plate roller in the embodiment is as follows: the split type intaglio plate roller is designed in a split type through the cooperation of the plate roller body 1, the positioning shaft 2 and the first fixing assembly 3; and the positioning shaft 2 can be installed on different plate roller bodies 1 through the first fixing assembly 3, so that plate roller bodies 1 engraved with different patterns can be installed through the same positioning shaft 2. When the plate roller body 1 is assembled with the positioning shaft 2, the positioning block 11 is aligned with the positioning groove 51, then the mounting plate 5 is inserted into the plate roller body 1, and the fixing bolt 31 passes through the through hole 52 on the mounting plate 5 and is threadedly connected with the threaded hole 41 on the mounting ring 4, so that the mounting plate 5 is fixed to the plate roller body 1, and the positioning shaft 2 is connected with the plate roller body 1. Compared with the traditional integral type plate roller and the hollow plate roller, the split type intaglio plate roller solves the problem of high cost, improves the positioning effect and improves the quality of printed products.

[0040] Embodiment 2

[0041] The difference between the embodiment and the embodiment 1 is that the split type intaglio plate roller further comprises a second fixing assembly 6, and the mounting plate 5 is detachably arranged on the positioning shaft 2 through the second fixing assembly 6. In actual printing production, different sizes of intaglio plate rollers may be used, at this time, the sizes of different intaglio plate rollers are different, and by arranging the mounting plate 5 and the positioning shaft 2 separately, only the mounting plate 5 of different sizes needs to be replaced, so that the plate roller body 1 of different sizes can be adapted.

[0042] With reference to Figure 3 and Figure 4 In the embodiment of the present application, the second fixing assembly 6 comprises a positioning ring 61 and a pressing ring 62. The positioning ring 61 is coaxially fixed on the positioning shaft 2, and the end of the positioning shaft 2 inserted into the plate roller body 1 is provided with external threads. For the convenience of understanding, the end of the positioning shaft 2 extending out of the plate roller body 1 is referred to as the outer end, and the end inserted into the plate roller body 1 is referred to as the inner end. The inner side wall of the pressing ring 62 is provided with internal threads, and the pressing ring 62 can be threadedly connected to the positioning shaft 2. During installation, the inner end of the positioning shaft 2 is sequentially inserted through the mounting plate 5 and the pressing ring 62, then the pressing ring 62 is rotated and the mounting plate 5 is pressed between the pressing ring 62 and the positioning ring 61, so that the mounting plate 5 is fixed on the positioning shaft 2.

[0043] Further, the limiting block 22 is fixed on the side wall of the positioning shaft 2 by welding or the like, and the limiting groove 53 for inserting the limiting block 22 is formed on the inner side wall of the mounting plate 5. The limiting block 22 is arranged on the side of the positioning ring 61 close to the inner end of the rotating shaft, and the length of the limiting block 22 is less than or equal to the length of the mounting plate 5. The cooperation of the limiting block 22 and the limiting groove 53 can prevent the mounting plate 5 from rotating relative to the positioning shaft 2, and further improve the stability of the connection.

[0044] With reference to Figure 2 and Figure 3 In the embodiment of the present application, the second fixing assembly 6 further comprises an anti-disengagement piece 63 for limiting loosening of the pressing ring 62. The anti-disengagement piece 63 comprises a pressing bolt 631 and a pressing block 632. The inner end of the positioning shaft 2 is provided with a sliding groove 23 for sliding of the pressing block 632 towards the direction close to or away from the positioning ring 61. The pressing block 632 is arranged in the shape of a long rectangular block, and the two end portions thereof extend out of the sliding groove 23. It should be noted that one end of the sliding groove 23 does not extend to the end face of the inner end of the positioning shaft 2, and the other end of the sliding groove 23 preferably extends to the inner side of the pressing ring 62, so as to ensure that the pressing block 632 can tightly abut against the pressing ring 62. At the same time, the pressing block 632 is slidably arranged in the sliding groove 23 by means of disassembly. When the mounting plate 5 needs to be replaced, the pressing block 632 is first removed, and then after replacement is completed, the pressing block 632 is inserted into the sliding groove 23 again. A recess is formed on the side wall of the pressing block 632 away from the positioning ring 61, and the size of the recess is relative to the columnar portion of the pressing bolt 631. The columnar portion of the pressing bolt 631 can be threadedly inserted through the end portion of the positioning shaft 2 and into the recess. By tightening the pressing bolt 631, the pressing block 632 can be driven to slide along the sliding groove 23 and abut against the pressing ring 62, so as to prevent loosening of the pressing ring 62, thereby further ensuring the reliability of the connection between the mounting plate 5 and the positioning shaft 2.

[0045] The implementation principle of the embodiment of the present application is that the detachable connection between the mounting plate 5 and the positioning shaft 2 is realized after the second fixing assembly 6 is added; in the second fixing assembly 6, the cooperation of the positioning ring 61 and the abutting ring 62 reliably fixes the mounting plate 5 on the positioning shaft 2, the limiting block 22 and the limiting groove 53 prevent the rotation of the mounting plate 5 and realize the torque transmission between the positioning shaft 2 and the mounting plate 5. The setting of the anti-falling part 63 further ensures that the abutting ring 62 will not loosen, and improves the stability and reliability of the entire split intaglio roller.

[0046] The above are preferred embodiments of the present application, which do not limit the protection scope of the present application, so that: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. A split-type gravure printing roller, characterized in that: The device includes a printing roller body (1), a positioning shaft (2), and a first fixing component (3). The printing roller body (1) has mounting rings (4) on the inner sidewalls at both ends. The positioning shaft (2) has a mounting plate (5) on its sidewall. The printing roller body (1) also has a positioning block (11) on its inner sidewall. The mounting plate (5) has a positioning groove (51) on its peripheral sidewall for the positioning block (11) to engage. When the mounting plate (5) is inserted into the printing roller body (1) and its end face abuts against the mounting ring (4), the positioning block (11) can be inserted into the positioning groove (51). The first fixing component (3) is used to detachably fix the mounting plate (5) to the mounting ring (4).

2. The split-type gravure printing roller according to claim 1, characterized in that: Multiple positioning blocks (11) are arranged circumferentially along the inner sidewall of the printing roller body (1), and multiple positioning grooves (51) are opened corresponding to the positioning blocks (11).

3. A split-type gravure printing roller according to claim 2, characterized in that: The first fixing component (3) is a fixing bolt (31). The mounting ring (4) has a threaded hole (41) for the fixing bolt (31) to be threaded. The mounting plate (5) has a through hole (52) for the fixing bolt (31) to pass through. When the positioning block (11) is inserted into the positioning groove (51), the through hole (52) is aligned with the threaded hole (41).

4. A split-type gravure printing roller according to claim 1, characterized in that: A keyway (21) is provided on the side wall of the positioning shaft (2) away from the printing roller body (1).

5. A split-type gravure printing roller according to any one of claims 1-4, characterized in that: It also includes a second fixing component (6), wherein the mounting plate (5) is detachably mounted on the positioning shaft (2), and the second fixing component (6) can fix the mounting plate (5) on the positioning shaft (2).

6. A split-type gravure printing roller according to claim 5, characterized in that: The second fixing component (6) includes a positioning ring (61) and a clamping ring (62). The positioning ring (61) is fixedly mounted on the positioning shaft (2). One end of the positioning shaft (2) inserted into the printing roller body (1) is provided with an external thread. The inner side wall of the clamping ring (62) is provided with an internal thread. The clamping ring (62) can be threadedly connected to the positioning shaft (2) and clamp the mounting plate (5) between itself and the positioning ring (61).

7. A split-type gravure printing roller according to claim 6, characterized in that: A limiting block (22) is provided on the side wall of the positioning shaft (2), and a limiting groove (53) is provided on the inner side wall of the mounting plate (5) for the limiting block (22) to be inserted.

8. A split-type gravure printing roller according to claim 7, characterized in that: The second fixing component (6) also includes an anti-loosening element (63) for limiting the loosening of the abutment ring (62).

9. A split-type gravure printing roller according to claim 8, characterized in that: The anti-detachment component (63) includes a clamping bolt (631) and a clamping block (632). The positioning shaft (2) is inserted into the printing roller body (1) at one end, which has a groove (23) for the clamping block (632) to slide towards or away from the positioning ring (61). The clamping block (632) is separated from the positioning ring (61) by a recessed groove for the clamping bolt (631) to be inserted. The cylindrical part of the clamping bolt (631) can be threaded through the end of the positioning shaft (2) and inserted into the recessed groove. The ends of the clamping block (632) extend out of the groove (23).

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