Quick-release ink roller assembly and printing device

Abstract

The utility model relates to the technical field of ink roller disassembly, in particular to a quick disassembly type ink roller assembly and a printing device. The quick disassembly type ink roller assembly comprises an ink roller, a clamping structure and a disassembly tool, the clamping structure comprises a connecting ring, the connecting ring is fixedly connected to the head end of the ink roller, and the connecting ring is arranged between the inner wall and the outer wall of the ink roller; the dismounting tool comprises a clamping ring and a base plate, and the clamping ring surrounds the connecting ring in the circumferential direction. The clamping ring is detachably connected with the connecting ring; the base plate is fixedly connected with the clamping ring through two connecting rods, the two connecting rods are distributed in the radial direction of the ink roller at intervals, and the diameter of the base plate is larger than the outer diameter of the connecting ring. Due to the fact that the disassembling tool can be installed on the clamping structure of the printing ink roller according to needs, and meanwhile the base plate of the disassembling tool is large in size and brings convenience to a worker to exert force for pulling out the printing ink roller, the printing ink roller can be easily disassembled from the rotating shaft of the printing device.

Description

Technical Field

[0001] This utility model relates to the field of ink roller disassembly technology, specifically to a quick-release ink roller assembly and printing device. Background Technology

[0002] The ink roller is a working component in the printing equipment. It is the main part that ensures clear printing and uniform ink application. The ink roller needs to be disassembled, cleaned, and maintained regularly.

[0003] The ink roller is a cylindrical roller that is mounted on the rotating shaft of the printing apparatus. Magnetic material is provided at the end of the ink roller, allowing it to magnetically connect with axially adjacent components. This prevents the ink roller from moving axially along the rotating shaft during operation, thus maintaining stable operation.

[0004] When removing the ink roller, workers need to grasp the head end of the ink roller by hand and pull it outwards with force. However, the end of the ink roller is magnetically connected to the axially adjacent component, and the head end of the ink roller is smooth and difficult to grasp, making the ink roller difficult to disassemble. Utility Model Content

[0005] The purpose of this invention is to solve the following technical problem: existing ink rollers are difficult to disassemble.

[0006] To achieve the above objectives, this utility model provides a quick-release ink roller assembly, which includes an ink roller, a snap-fit ​​structure, and a disassembly fixture. The ink roller is used to mount the rotating shaft of a printing device. The snap-fit ​​structure includes a connecting ring, which is fixedly connected to the first end of the ink roller. The axis of the connecting ring coincides with the axis of the ink roller, and the connecting ring is disposed between the inner wall and the outer wall of the ink roller. The disassembly fixture includes a snap-fit ​​ring and a base plate. The snap-fit ​​ring circumferentially surrounds the connecting ring. The snap-fit ​​ring and the connecting ring are detachably connected, so that the disassembly fixture and the snap-fit ​​structure can be disassembled. The base plate is fixedly connected to the snap-fit ​​ring by two connecting rods, which are radially spaced on the ink roller. The diameter of the base plate is larger than the outer diameter of the connecting ring, and the axis of the base plate coincides with the axis of the ink roller.

[0007] In some embodiments, two connecting plates are fixedly connected to the inner side of the snap ring. The two connecting plates are distributed at intervals in the radial direction of the ink roller, and the two connecting plates are respectively fixedly connected to the substrate by a connecting rod.

[0008] In some embodiments, the snap-fit ​​structure further includes a snap ring, which circumferentially surrounds the connecting ring and is fixedly connected to the connecting ring. The snap ring and the leading end of the ink roller are spaced apart axially from each other, so that an annular groove is formed between the snap ring, the connecting ring, and the leading end of the ink roller. The snap ring has two mounting ports communicating with the annular groove, which are distributed radially at intervals along the ink roller. The snap-fit ​​ring has two protrusions on the side facing the ink roller, which are distributed radially at intervals along the ink roller. The protrusions have snap-fit ​​blocks on the side facing the axis of the snap-fit ​​ring, which are distributed radially at intervals along the ink roller. The two snap-fit ​​blocks are disposed in the annular groove, and the snap-fit ​​ring can rotate circumferentially along the annular groove through the two snap-fit ​​blocks. The two snap-fit ​​blocks correspond one-to-one with the two mounting ports, and the snap-fit ​​blocks can disengage from the corresponding mounting ports from the annular groove.

[0009] In some embodiments, the disassembly fixture further includes a moving rod, a pressure plate, and a spring. The moving rod moves through the middle of the base plate, which is located between the beginning and end of the moving rod. The axis of the moving rod coincides with the axis of the ink roller. The pressure plate is fixedly connected to the beginning of the moving rod and is disposed between the ink roller and the moving rod. The diameter of the pressure plate is larger than the diameter of the moving rod, and both the diameter of the pressure plate and the diameter of the moving rod are smaller than the inner diameter of the ink roller. The pressure plate is used to press against the end of the rotating shaft. The spring is movably sleeved on the moving rod and can apply a force that moves away from each other to the pressure plate and the base plate, so that the base plate can pull the ink roller.

[0010] In some embodiments, the pressure plate is a circular plate.

[0011] In some embodiments, the disassembly fixture further includes a sleeve, which is fixedly installed on the side of the substrate facing the ink roller, the sleeve is movably sleeved on the outside of the moving rod, and a spring is disposed between the sleeve and the pressure plate, with the sleeve and the spring located between the two connecting rods.

[0012] In some embodiments, a linear bearing is fixedly installed inside the sleeve, and the linear bearing surrounds the moving rod.

[0013] In some embodiments, the disassembly fixture further includes an annular stop plate, which is fixedly installed on the side of the sleeve facing the ink roller. The axis of the stop plate coincides with the axis of the ink roller. The stop plate can stop the linear bearing, and the moving rod moves through the middle of the stop plate.

[0014] In some embodiments, the disassembly fixture further includes a pressing block, which is fixedly installed at the end of the moving rod, and the side of the pressing block facing away from the ink roller is configured as a hemispherical shape.

[0015] This invention also provides a printing apparatus, which includes the quick-release ink roller assembly described in the above embodiments.

[0016] The above-mentioned technical solution of this utility model has the following beneficial effects:

[0017] During the operation of the ink roller, the snap-fit ​​ring of the disassembly fixture disengages from the connecting ring of the snap-fit ​​structure, at which point the disassembly fixture is not connected to the snap-fit ​​structure. When it is necessary to remove the ink roller, the snap-fit ​​ring of the disassembly fixture is connected to the connecting ring of the snap-fit ​​structure, thus connecting the disassembly fixture to the ink roller through the snap-fit ​​structure. Then, a force is applied to the substrate to pull out the ink roller, and the ink roller can be pulled out. After the ink roller is removed, the connection between the snap-fit ​​ring and the connecting ring is released, at which point the disassembly fixture is disengaged from the snap-fit ​​structure, facilitating cleaning and maintenance of the ink roller. Because the disassembly fixture can be installed on the snap-fit ​​structure of the ink roller as needed, and because the substrate of the disassembly fixture is relatively large and allows operators to apply force to pull out the ink roller, the ink roller can be easily removed from the rotating shaft of the printing device. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of a quick-release ink roller assembly according to an embodiment of the present invention;

[0019] Figure 2 This is a three-dimensional schematic diagram of the disassembly fixture in one embodiment of the present invention;

[0020] Figure 3 This is a three-dimensional schematic diagram of the disassembly fixture in one embodiment of the present invention;

[0021] Figure 4 This is a schematic diagram of the distribution of the snap-fit ​​structure in one embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of an embodiment of the present invention, showing the ink roller mounted on a rotating shaft;

[0023] Figure 6 This is a cross-sectional schematic diagram of a quick-release ink roller assembly according to an embodiment of the present invention;

[0024] Figure 7 This is a schematic diagram of the snap-fit ​​ring and snap-fit ​​ring snap-fitting in one embodiment of the present invention.

[0025] Explanation of reference numerals in the attached figures

[0026] 1. Ink roller;

[0027] 2. Snap-fit ​​structure; 21. Connecting ring; 22. Snap ring; 221. Mounting port; 23. Annular groove;

[0028] 3. Disassembly fixture; 31. Snap-fit ​​ring; 311. Snap-fit ​​block; 312. Connecting plate; 313. Protrusion; 32. Base plate; 321. Sleeve; 322. Linear bearing; 323. Stop plate; 33. Connecting rod; 34. Moving rod; 341. Pressing plate; 342. Spring; 343. Pressing block;

[0029] 4. Shaft. Detailed Implementation

[0030] The features and exemplary embodiments of various aspects of this utility model will now be described in detail. To make the objectives, technical solutions, and advantages of this utility model clearer, the following description, in conjunction with the accompanying drawings and specific embodiments, will provide a further detailed description. It should be understood that the specific embodiments described herein are intended only to explain this utility model and not to limit it. For those skilled in the art, this utility model can be implemented without some of these specific details. The following description of the embodiments is merely to provide a better understanding of this utility model by illustrating examples of it.

[0031] like Figure 1 and Figure 6 As shown, this utility model provides a quick-release ink roller assembly, which includes an ink roller 1, a snap-fit ​​structure 2, and a disassembly fixture 3. The ink roller 1 is used to mount the rotating shaft 4 of a printing device. The snap-fit ​​structure 2 includes a connecting ring 21, which is fixedly connected to the first end of the ink roller 1. The axis of the connecting ring 21 coincides with the axis of the ink roller 1, and the connecting ring 21 is disposed between the inner wall and the outer wall of the ink roller 1. The disassembly fixture 3 includes a snap-fit ​​ring 31 and a base plate 32. The snap-fit ​​ring 31 circumferentially surrounds the connecting ring 21; and the snap-fit ​​ring 31 and the connecting ring 21 are detachably connected, so that the disassembly fixture 3 and the snap-fit ​​structure 2 are detachable. The base plate 32 is fixedly connected to the snap-fit ​​ring 31 by two connecting rods 33, which are radially spaced on the ink roller 1. The diameter of the base plate 32 is larger than the outer diameter of the connecting ring 21, and the axis of the base plate 32 coincides with the axis of the ink roller 1.

[0032] Specifically, ink roller 1 is a cylindrical roller that can be mounted on the rotating shaft 4 of the printing device. Connecting ring 21 is annular and is located on the end wall of the first end of ink roller 1, between the inner and outer walls of ink roller 1. Therefore, the inner diameter of connecting ring 21 is larger than the inner diameter of ink roller 1, and the outer diameter of connecting ring 21 is smaller than the outer diameter of ink roller 1. This prevents the locking structure 2 from hindering the normal operation of ink roller 1 and surrounding components, thus eliminating the need to modify the surrounding components. Locking ring 31 is annular and can be detachably connected to connecting ring 21, allowing substrate 32 to be connected to the first end of ink roller 1 via locking ring 31 and connecting ring 21. Substrate 32 is a circular plate with its axis coinciding with the axis of ink roller 1. The diameter of substrate 32 is larger than the outer diameter of connecting ring 21, giving substrate 32 a larger size, facilitating gripping and application of force to pull out ink roller 1.

[0033] In this embodiment, during the operation of the ink roller 1, the snap ring 31 of the disassembly fixture 3 disengages from the connecting ring 21 of the snap-fit ​​structure 2, at which point the disassembly fixture 3 is not connected to the snap-fit ​​structure 2. When it is necessary to remove the ink roller 1, the snap ring 31 of the disassembly fixture 3 is connected to the connecting ring 21 of the snap-fit ​​structure 2, thereby connecting the disassembly fixture 3 to the ink roller 1 through the snap-fit ​​structure 2. Then, a force is applied to the substrate 32 to pull out the ink roller 1, and the ink roller 1 can be pulled out. After the ink roller 1 is removed, the connection between the snap ring 31 and the connecting ring 21 is released, at which point the disassembly fixture 3 disengages from the snap-fit ​​structure 2, facilitating the cleaning and maintenance of the ink roller 1. Since the disassembly fixture 3 can be installed on the snap-fit ​​structure 2 of the ink roller 1 as needed, and the substrate 32 of the disassembly fixture 3 has a large size and facilitates the application of force by the operator to pull out the ink roller 1, the ink roller 1 can be easily removed from the rotating shaft 4 of the printing device.

[0034] Furthermore, traditional ink rollers can only be pulled out by grasping their ends, which is quite difficult. In this solution, however, the ink roller 1 can be pulled out by applying force to the disassembly fixture 3, eliminating the need to grasp the end of the ink roller 1, thus making disassembly much easier.

[0035] It should be noted that, as with existing technologies, the end of ink roller 1 is also provided with magnetic material.

[0036] like Figures 1 to 3 As shown, in some embodiments of this utility model, two connecting plates 312 are fixedly connected to the inner side of the snap ring 31. The two connecting plates 312 are distributed at intervals in the radial direction of the ink roller 1. The two connecting plates 312 are respectively fixedly connected to the substrate 32 through a connecting rod 33.

[0037] Specifically, by providing the connecting plate 312, it facilitates the installation of the connecting rod 33 and reduces the distance between the two connecting rods 33, allowing them to connect at the center of the substrate 32, thus making it easier for workers to grip the edge of the substrate 32. Preferably, the snap ring 31 and the connecting plate 312 are integrally formed.

[0038] In some embodiments, the two ends of the connecting rod 33 are fixedly connected to the connecting plate 312 and the base plate 32 by bolts, respectively.

[0039] like Figures 1 to 7 As shown, in some embodiments of this utility model, the snap-fit ​​structure 2 further includes a snap ring 22, which circumferentially surrounds the connecting ring 21 and is fixedly connected to the connecting ring 21; the snap ring 22 and the first end of the ink roller 1 are spaced apart axially in the direction of the ink roller 1, so that an annular groove 23 is formed between the snap ring 22, the connecting ring 21 and the first end of the ink roller 1; the snap ring 22 is provided with two mounting ports 221 communicating with the annular groove 23, and the two mounting ports 221 are distributed radially at intervals along the ink roller 1. The snap ring 31 has two protrusions 313 on the side facing the ink roller 1. The two protrusions 313 are distributed at intervals in the radial direction of the ink roller 1. The snap ring 311 has two snap blocks 311 on the side facing the axis of the snap ring 31. The two snap blocks 311 are distributed at intervals in the radial direction of the ink roller 1. The two snap blocks 311 are set in the annular groove 23, and the snap ring 31 can rotate circumferentially along the annular groove 23 through the two snap blocks 311. The two snap blocks 311 correspond one-to-one with the two mounting ports 221, and the snap blocks 311 can disengage from the corresponding mounting ports 221 from the annular groove 23.

[0040] Specifically, the spacing between the snap-fit ​​blocks 311 is greater than the inner diameter of the retaining ring 22, and the spacing between the snap-fit ​​blocks 311 is less than the outer diameter of the retaining ring 22, so the retaining ring 31 can be snapped into the retaining ring 22 through the snap-fit ​​blocks 311. The size of the mounting opening 221 is slightly larger than the size of the snap-fit ​​blocks 311 to facilitate the snap-fit ​​blocks 311 moving into or out of the annular groove 23. The annular groove 23 is distributed around the connecting ring 21.

[0041] In this embodiment, when it is necessary to remove the ink roller 1, the snap ring 31 is placed on the outside of the snap ring 22, and the two snap blocks 311 are respectively located at the two mounting ports 221; then the base plate 32 is pushed so that the snap blocks 311 move into the annular groove 23 through the mounting ports 221; then the base plate 32 is rotated, and the snap ring 31 rotates circumferentially along the annular groove 23 through the two snap blocks 311 until the snap blocks 311 are misaligned with the mounting ports 221. At this time, the snap ring 31 forms a snap with the snap ring 22 through the snap blocks 311; then the base plate 32 is pulled outward to remove the ink roller 1 from the rotating shaft 4 of the printing device. After the ink roller 1 is pulled out, the substrate 32 is rotated, and the snap ring 31 rotates circumferentially along the annular groove 23 through the two snap blocks 311 until the snap blocks 311 are aligned with the mounting port 221; then the substrate 32 is pulled outward, and the snap blocks 311 leave the annular groove 23 from the mounting port 221, and the connection between the snap ring 31 and the snap ring 22 is released. At this time, the disassembly tool 3 is disengaged from the snap structure 2.

[0042] Of course, the snap-fit ​​ring 31 and the connecting ring 21 can also be detachably connected in other ways, and this utility model does not impose any limitations. For example, the snap-fit ​​ring 31 is fitted over the connecting ring 21, and the snap-fit ​​ring 31 and the connecting ring 21 are threaded together.

[0043] In some embodiments, the retaining ring 22, the connecting ring 21, and the ink roller 1 can be integrally formed.

[0044] like Figure 1 and Figure 6 As shown, in some embodiments of this utility model, the disassembly fixture 3 further includes a moving rod 34, a pressing plate 341, and a spring 342. The moving rod 34 moves through the middle of the base plate 32, and the base plate 32 is located between the first end and the last end of the moving rod 34. The axis of the moving rod 34 coincides with the axis of the ink roller 1. The pressing plate 341 is fixedly connected to the first end of the moving rod 34 and is disposed between the ink roller 1 and the moving rod 34. The diameter of the pressing plate 341 is larger than the diameter of the moving rod 34, and both the diameter of the pressing plate 341 and the diameter of the moving rod 34 are smaller than the inner diameter of the ink roller 1. The pressing plate 341 is used to press against the end of the rotating shaft 4. The spring 342 is movably sleeved on the moving rod 34, and the spring 342 can apply a force that moves away from each other to the pressing plate 341 and the base plate 32, so that the base plate 32 can pull the ink roller 1.

[0045] Specifically, when the ink roller 1 needs to be removed, the operator presses the pressure plate 341 against the end of the rotating shaft 4, and simultaneously engages the locking ring 31 with the locking ring 22 (that is, moves the locking block 311 into the annular groove 23). At this time, the spring 342 is compressed by the base plate 32 and the pressure plate 341. Then, the operator releases the disassembly fixture 3, and the spring 342 returns to its original shape. The spring 342 applies a force away from the pressure plate 341 to the base plate 32. The base plate 32 moves away from the pressure plate 341 along the moving rod 34. At this time, the base plate 32 pulls the ink roller 1 outward, thereby pulling the ink roller 1 outward. Therefore, by setting the disassembly fixture 3 in this mechanism form, the ink roller 1 can be disassembled by the elastic force of the spring 342, making the disassembly of the ink roller 1 more convenient and easier.

[0046] In some embodiments, the outer diameter of the spring 342 is smaller than the diameter of the pressure plate 341.

[0047] In some embodiments, the two ends of the spring 342 are fixedly connected to the pressing block and the sleeve 321, respectively.

[0048] In some embodiments, the pressure plate 341 is fixedly connected to the head end of the moving rod 34 by bolts.

[0049] like Figures 1 to 3 As shown, in some embodiments of this utility model, the pressure plate 341 is a circular plate to facilitate pressing against the end of the rotating shaft 4.

[0050] Specifically, one circular end face of the pressure plate 341 can contact the end of the rotating shaft 4, and the other circular end face of the pressure plate 341 is connected to the moving rod 34.

[0051] Of course, the pressure plate 341 can also be in other structural forms, such as a rectangular plate or an elliptical plate.

[0052] like Figure 1 and Figure 3 As shown, in some embodiments of this utility model, the disassembly fixture 3 further includes a sleeve 321. The sleeve 321 is fixedly installed on the side of the substrate 32 facing the ink roller 1. The sleeve 321 is movably sleeved on the outside of the moving rod 34. A spring 342 is disposed between the sleeve 321 and the pressure plate 341. The sleeve 321 and the spring 342 are located between the two connecting rods 33. By providing the sleeve 321, the substrate 32 can move stably along the moving rod 34. Preferably, the sleeve 321 is integrally formed with the substrate 32.

[0053] like Figure 6 As shown, in some embodiments of this utility model, a linear bearing 322 is fixedly installed inside the sleeve 321, and the linear bearing 322 surrounds the moving rod 34.

[0054] Specifically, by setting a linear bearing 322 sleeved on the moving rod 34, the friction between the sleeve 321 and the substrate 32 during movement can be reduced, while the sleeve 321 and the substrate 32 can move along the axis of the moving rod 34, thereby making it easier for the substrate 32 to pull the ink roller 1 outward.

[0055] like Figure 1 and Figure 6 As shown, in some embodiments of this utility model, the disassembly fixture 3 further includes an annular stop plate 323. The stop plate 323 is fixedly installed on the side of the sleeve 321 facing the ink roller 1. The axis of the stop plate 323 coincides with the axis of the ink roller 1. The stop plate 323 can stop the linear bearing 322. The moving rod 34 moves through the middle of the stop plate 323.

[0056] Specifically, one end of the sleeve 321 is blocked by the base plate 32, and the other end of the sleeve 321 is blocked by the stop plate 323. On the one hand, the stop plate 323 and the base plate 32 can clamp and fix the linear bearing 322; on the other hand, the stop plate 323 and the base plate 32 seal the sleeve 321 to prevent contaminants from entering the linear bearing 322.

[0057] In some embodiments, the two ends of the spring 342 are fixedly connected to the pressure plate 341 and the stop plate 323, respectively.

[0058] like Figures 1 to 3 As shown, in some embodiments of this utility model, the disassembly fixture 3 further includes a pressing block 343, which is fixedly installed at the end of the moving rod 34. The side of the pressing block 343 facing away from the ink roller 1 is set in a hemispherical shape. The pressing block 343 can improve the convenience of operation for the operator.

[0059] This invention also provides a printing apparatus, which includes the quick-release ink roller assembly described in the above embodiments.

[0060] Specifically, the printing apparatus employs the quick-release ink roller assembly described in the above embodiments, thus achieving the technical effects of the aforementioned embodiments. For other parts of the printing apparatus, those skilled in the art can refer to existing technologies; further details are omitted here.

[0061] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The above examples are only for the purpose of helping to understand the method and core ideas of this utility model. The above are only preferred embodiments of this utility model. It should be noted that due to the limitations of textual expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this utility model, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the concept and technical solution of this utility model to other occasions without modification, should all be considered within the protection scope of this utility model.

Claims

1. A quick release ink roller assembly comprising: It includes an ink roller (1), a snap-fit ​​structure (2), and a disassembly fixture (3), wherein the ink roller (1) is used to mount the rotating shaft (4) of the printing device; The snap-fit ​​structure (2) includes a connecting ring (21), which is fixedly connected to the first end of the ink roller (1). The axis of the connecting ring (21) coincides with the axis of the ink roller (1), and the connecting ring (21) is disposed between the inner wall and the outer wall of the ink roller (1). The disassembly fixture (3) includes a snap ring (31) and a base plate (32). The snap ring (31) circumferentially surrounds the connecting ring (21). The snap ring (31) and the connecting ring (21) are detachably connected so that the disassembly fixture (3) and the snap structure (2) are detachable. The base plate (32) is fixedly connected to the snap ring (31) by two connecting rods (33). The two connecting rods (33) are radially spaced on the ink roller (1). The diameter of the base plate (32) is larger than the outer diameter of the connecting ring (21), and the axis of the base plate (32) coincides with the axis of the ink roller (1).

2. The quick release ink roller assembly of claim 1, wherein, Two connecting plates (312) are fixedly connected to the inner side of the snap ring (31). The two connecting plates (312) are distributed at intervals in the radial direction of the ink roller (1). The two connecting plates (312) are respectively fixedly connected to the substrate (32) through a connecting rod (33).

3. The quick release ink roller assembly of claim 1, wherein, The snap-fit ​​structure (2) further includes a snap ring (22), which surrounds the connecting ring (21) circumferentially and is fixedly connected to the connecting ring (21); the snap ring (22) and the first end of the ink roller (1) are spaced apart axially from each other, so that an annular groove (23) is formed between the snap ring (22), the connecting ring (21) and the first end of the ink roller (1); the snap ring (22) is provided with two mounting ports (221) communicating with the annular groove (23), and the two mounting ports (221) are distributed radially at intervals along the ink roller (1); The snap ring (31) has two protrusions (313) on the side facing the ink roller (1), and the two protrusions (313) are distributed at intervals in the radial direction of the ink roller (1). The protrusions have snap blocks (311) on the side facing the axis of the snap ring (31), and the two snap blocks (311) are distributed at intervals in the radial direction of the ink roller (1). The two snap blocks (311) are disposed in the annular groove (23), and the snap ring (31) can rotate circumferentially along the annular groove (23) through the two snap blocks (311). The two snap blocks (311) correspond one-to-one with the two mounting ports (221), and the snap blocks (311) can disengage from the annular groove (23) from the corresponding mounting port (221).

4. The quick release ink roller assembly of claim 3, wherein, The disassembly fixture (3) also includes a moving rod (34), a pressure plate (341), and a spring (342). The moving rod (34) moves through the middle of the substrate (32). The substrate (32) is located between the first end and the last end of the moving rod (34). The axis of the moving rod (34) coincides with the axis of the ink roller (1). The pressure plate (341) is fixedly connected to the head end of the moving rod (34), and the pressure plate (341) is disposed between the ink roller (1) and the moving rod (34). The diameter of the pressure plate (341) is larger than the diameter of the moving rod (34). The diameter of the pressure plate (341) and the diameter of the moving rod (34) are both smaller than the inner diameter of the ink roller (1). The pressure plate (341) is used to press against the end of the rotating shaft (4). The spring (342) is movably sleeved on the moving rod (34), and the spring (342) can apply a force that moves away from each other to the pressure plate (341) and the substrate (32), so that the substrate (32) can pull the ink roller (1).

5. The quick release ink roller assembly of claim 4, wherein, The pressure plate (341) is a circular plate.

6. The quick release ink roller assembly of claim 4, wherein, The disassembly fixture (3) also includes a sleeve (321), which is fixedly installed on the side of the substrate (32) facing the ink roller (1). The sleeve (321) is movably sleeved on the outside of the moving rod (34). The spring (342) is disposed between the sleeve (321) and the pressure plate (341). The sleeve (321) and the spring (342) are located between the two connecting rods (33).

7. The quick release ink roller assembly of claim 6, wherein, A linear bearing (322) is fixedly installed inside the sleeve (321), and the linear bearing (322) surrounds the moving rod (34).

8. The quick release ink roller assembly of claim 7, wherein, The disassembly fixture (3) also includes an annular stop plate (323), which is fixedly installed on the side of the sleeve (321) facing the ink roller (1). The axis of the stop plate (323) coincides with the axis of the ink roller (1). The stop plate (323) can stop the linear bearing (322). The moving rod (34) moves through the middle of the stop plate (323).

9. The quick release ink roller assembly of claim 4, wherein, The disassembly fixture (3) also includes a pressing block (343), which is fixedly installed at the end of the moving rod (34). The side of the pressing block (343) facing away from the ink roller (1) is set in a hemispherical shape.

10. A printing device characterized by comprising: Includes the quick-release ink roller assembly according to any one of claims 1-9.

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