Adjusting air cylinder for printing

Abstract

The utility model discloses an adjusting air cylinder for printing, which relates to the field of air cylinders and comprises an air cylinder body, a rear ejector rod and an adjusting rod, the rear ejector rod is connected to one side of the air cylinder body far away from the driving end of a piston rod, and the adjusting rod is sleeved outside the rear ejector rod and is in threaded fit with the rear ejector rod. A mounting hole is formed in the peripheral side of the adjusting rod in the radial direction, and the mounting hole penetrates through the inner wall of the adjusting rod; a damping piece and a jackscrew are installed in the installation hole, the damping piece abuts against the rear ejector rod, and the jackscrew abuts against the side, away from the periphery of the rear ejector rod, of the damping piece and is in threaded fit with the installation hole. The utility model has the advantages of being convenient to assemble and process and low in cost.

Description

Technical Field

[0001] The utility model relates to the field of cylinders, in particular to an adjusting cylinder for printing. Background Art

[0002] In a printing press, a scraper or ink return blade is usually adjusted vertically by an adjusting cylinder. The adjusting cylinder includes an adjusting rod and a cylinder body, and a threaded adjustment can be achieved between the adjusting rod and the cylinder body, so that the cylinder body can be fine-tuned by rotating the adjusting rod.

[0003] In order to ensure that the adjusting rod has a certain damping force when it rotates, the existing adjusting cylinder for printing has a damping ring embedded in the adjusting rod. In order to position the damping ring, a step and a retaining spring groove are provided in the adjusting rod, and the damping ring is positioned at the step by the retaining spring. Finally, the damping ring is deformed by the top screw on the side of the adjusting rod so that the adjusting rod has a certain damping force when it rotates. The structural processing difficulty and processing cost are relatively large, and the assembly is relatively inconvenient. In addition, the scale in the above-mentioned adjusting cylinder is set on the adjusting rod, and a reference sleeve needs to be set to facilitate the user to observe the scale. There are many spare parts and the cost is relatively high. Summary of the invention

[0004] The utility model aims to provide an adjusting cylinder for printing, which has the advantages of convenient assembly and processing and low cost.

[0005] The above technical objectives of the utility model are achieved through the following technical solutions:

[0006] The utility model provides an adjusting cylinder for printing, which comprises a cylinder body, a rear push rod and an adjusting rod, wherein the rear push rod is connected to a side of the cylinder body away from a piston rod driving end, the adjusting rod is sleeved outside the rear push rod and is threadedly matched with the rear push rod, a mounting hole is radially opened on the peripheral side of the adjusting rod, and the mounting hole passes through the inner wall of the adjusting rod; a damping member and a top screw are installed in the mounting hole, the damping member abuts against the rear push rod, and the top screw abuts against a side of the damping member away from the outer periphery of the rear push rod and is threadedly matched with the mounting hole.

[0007] In this solution, the adjustment rod of the printing adjustment cylinder is threadedly matched with the rear push rod. By rotating the adjustment rod, the rear push rod can be moved relative to the adjustment rod, thereby moving the cylinder body. The adjustment rod sleeved outside the rear push rod is installed with a damping member through a mounting hole radially opened on the peripheral side. The damping member abuts against the outer periphery of the rear push rod and is limited in the mounting hole by a top screw, so that the adjustment rod has a certain damping force when rotating. The mounting hole in this structure is easy to process. When installing the damping member, it only needs to be inserted into the mounting hole and limited by the top screw. The installation operation is relatively convenient and the cost is low.

[0008] Furthermore, the rear push rod is provided with scale lines, and the reading of the scale lines gradually increases in the direction approaching the cylinder body; the adjusting rod can move axially relative to the rear push rod to change the degree of shielding of the scale lines.

[0009] In the present solution, the scale lines are arranged on the rear push rod. Since the adjusting rod sleeve is arranged outside the rear push rod, when the adjusting rod is rotated to make the rear push rod move axially relative to the adjusting rod, the degree of blocking of the scale lines by the adjusting rod changes. The distance moved by the cylinder body can be obtained by reading the reading on the scale line with the end of the adjusting rod close to the cylinder body as a reference. Compared with the method in which the scale lines are arranged on the adjusting rod, there is no need to set an additional reference sleeve in the present solution, which makes full use of the structure of the adjusting rod, reduces the parts of the finished product, and reduces the production cost and assembly complexity.

[0010] Furthermore, the adjusting rod includes a connecting portion, a front sleeve and a rear sleeve, the connecting portion is threadedly engaged with the rear push rod, and the mounting hole is arranged on the connecting portion; the front sleeve is connected to the side of the connecting portion facing the cylinder body, and the rear sleeve is connected to the side of the connecting portion away from the cylinder body, and at least part of the front sleeve can block the scale line.

[0011] Furthermore, the connecting portion, the front sleeve and the rear sleeve are coaxially connected and have the same outer diameter, and the inner diameter of the front sleeve and the inner diameter of the rear sleeve are both larger than the inner diameter of the connecting portion.

[0012] In this solution, the connection part, the front sleeve and the rear sleeve are coaxial and have the same outer diameter, so that the outer peripheral side of the adjustment rod is on the same circumferential surface, which has a compact structure, beautiful appearance, and convenient processing of the adjustment rod. The inner diameter of the front sleeve and the inner diameter of the rear sleeve are both larger than the inner diameter of the connection part, so that when the connection part meets the threaded connection with the rear push rod, the thickness of the front sleeve and the rear sleeve is small, reducing their consumables and weight.

[0013] Further, the rear push rod comprises a connecting rod and a connecting sleeve, and the connecting rod passes through the connecting sleeve and is threadedly engaged with the connecting portion;

[0014] The front sleeve is sleeved outside the connecting sleeve, and a filling ring is coaxially connected to the inner wall of one end of the front sleeve away from the connecting portion. The filling ring is located in a sandwich formed between the front sleeve and the connecting sleeve.

[0015] In this solution, the rear push rod includes a connecting rod and a connecting sleeve sleeved outside the connecting rod, and the connecting rod is threadedly matched with the connecting part so that the connecting rod and the cylinder body can be driven to move by rotating the connecting part. The front sleeve is sleeved outside the connecting sleeve, and the inner wall of one end of the front sleeve away from the connecting part is connected to a filling ring to reduce the gap between the end of the front sleeve and the connecting sleeve, thereby reducing the visual error when reading the reading on the scale line.

[0016] Furthermore, the connecting rod is integrally formed with the piston rod of the cylinder body, and the connecting sleeve is connected to the rear end cover of the cylinder body.

[0017] In this solution, the connecting rod and the piston rod of the cylinder body are integrally formed, so that the overall strength of the connection between the connecting rod and the cylinder body is better, and the force on the adjusting rod can be better transmitted to the piston rod of the cylinder body.

[0018] Furthermore, the connecting rod passes through the connecting portion and is connected to a limiting plate, the limiting plate is located on a side of the connecting portion away from the cylinder body, and the diameter of the limiting plate is greater than the inner diameter of the connecting portion.

[0019] In this solution, a limiting piece is provided at the end of the connecting rod to limit the connecting part, so that the connecting part is not easy to fall off the connecting rod when rotating relative to the connecting rod, so that the printing regulating cylinder can work stably.

[0020] Furthermore, a protrusion is provided outwardly at the middle part of the connecting part, and a side of the protrusion close to the front sleeve forms a first step with the surrounding side of the connecting part, and a side of the protrusion close to the rear sleeve forms a second step with the surrounding side of the connecting part. External threads are provided on the first step and the second step, and internal threads are provided on the inner walls of the facing ends of the front sleeve and the rear sleeve. The front sleeve is sleeved outside the first step and cooperates with the first step thread, and the rear sleeve is sleeved outside the second step and cooperates with the second step thread.

[0021] In the present embodiment, the protrusion on the connecting part and the outer periphery at both ends of the connecting part form a first step and a second step. The front sleeve and the rear sleeve are respectively sleeved outside the first step and the second step and threadedly connected. The outer periphery of the protrusion is flush with the outer periphery of the front sleeve and the outer periphery of the rear sleeve. This arrangement ensures that the connecting part is securely connected to the front sleeve and the rear sleeve while ensuring that the outer periphery of the adjusting rod is smooth.

[0022] Furthermore, the mounting hole is opened in the protruding portion, and the outer surface of the protruding portion, the outer surface of the front sleeve and the outer surface of the rear sleeve are located in the same cylindrical surface.

[0023] Furthermore, the damping member is a cylindrical component adapted to the mounting hole, and both ends of the damping member are in a gradually shrinking frustum shape in a direction away from the middle.

[0024] In this solution, the damping member is a cylindrical member adapted to the mounting hole, that is, the diameter of the damping member is close to the diameter of the mounting hole, so that the damping member is not easy to shake after being installed in the mounting hole. The two ends of the damping member are gradually reduced in the shape of a truncated cone, so that the installation and removal of the damping member are convenient, and the edge of the damping member is not easy to be damaged due to stress concentration.

[0025] In summary, the utility model has the following beneficial effects:

[0026] In the printing adjustment cylinder of the utility model, the adjustment rod is sleeved outside the rear push rod, and a mounting hole is opened on the adjustment rod to install the damping member, and then the damping member is limited in the mounting hole by a top screw, so that the installation of the damping member is realized. The structure is simple, the installation is convenient, and the cost is low. The scale line is set on the rear push rod, and the reading is read by using the adjustment rod as a reference, and there is no need to set an additional reference sleeve, which further reduces the manufacturing cost and the complexity of installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a three-dimensional structural schematic diagram of an adjusting cylinder for printing according to an embodiment of the utility model.

[0028] Figure 2 It is a schematic diagram of the vertical cross-sectional structure of an adjusting cylinder for printing according to an embodiment of the utility model.

[0029] Figure 3 It is a schematic diagram of the exploded structure of an adjusting cylinder for printing according to an embodiment of the utility model.

[0030] Figure 4 It is a three-dimensional structural schematic diagram of a cylinder body and a rear push rod according to an embodiment of the utility model.

[0031] Figure 5 It is a schematic diagram of the vertical cross-sectional structure of a rear push rod and an adjusting rod according to an embodiment of the utility model.

[0032] In the figure:

[0033] 1000, adjusting cylinder for printing; 100, cylinder body; 110, piston rod; 111, annular groove; 120, tail end cover; 130, annular limiter; 140, piston; 200, rear push rod; 210, connecting rod; 220, connecting sleeve; 221, scale line; 230, limiter; 300, adjusting rod; 310, front sleeve; 320, connecting part; 321, protrusion; 322, first step; 323, second step; 324, mounting hole; 330, rear sleeve; 340, damping part; 350, push screw; 360, filling ring. DETAILED DESCRIPTION

[0034] The utility model is further described below in conjunction with the accompanying drawings.

[0035] This embodiment discloses a printing regulating cylinder 1000, referring to Figure 1 and Figure 2 The printing regulating cylinder 1000 comprises a cylinder body 100, a rear push rod 200 and an adjusting rod 300. The rear push rod 200 is connected to a side of the cylinder body 100 away from the driving end of the piston rod 110 (i.e., the end of the piston rod 110 used to connect and drive the ink scraper or ink return knife), and the adjusting rod 300 is sleeved outside the rear push rod 200 and threadedly matched with the rear push rod 200. The adjusting rod 300 is used to be rotatably connected to the printing press. By rotating the adjusting rod 300, the rear push rod 200 is driven to approach or move away from the adjusting rod 300 in the axial direction, thereby changing the position of the cylinder body 100 and realizing fine adjustment of the cylinder body 100.

[0036] Reference Figure 2 The rear push rod 200 includes a connecting rod 210 and a connecting sleeve 220, both of which are located inside the adjusting rod 300. The connecting sleeve 220 is sleeved outside the connecting rod 210, and the part of the connecting rod 210 that passes through the connecting sleeve 220 is threadedly connected to the adjusting rod 300.

[0037] Among them, the connecting rod 210 and the piston rod 110 of the cylinder body 100 are integrally formed, that is, the cylinder piston rod 110 extends toward one side of the connecting rod 210 and protrudes from the tail end cover 120 of the cylinder body 100 to form the connecting rod 210, thereby making the overall strength of the connection between the connecting rod 210 and the cylinder body 100 better, and the force on the adjusting rod 300 can be better transmitted to the piston rod 110 of the cylinder body 100.

[0038] Meanwhile, in the prior art, the piston rod 110 and the connecting rod 210 are connected by means of threaded connection, etc., and the connection between the piston rod 110 and the connecting rod 210 is easy to bend, and the concentricity of the piston rod 110 and the connecting rod 210 is difficult to ensure, which easily leads to the cylinder body 100 running unsmoothly, feeling stuck or even stuck. In this embodiment, the piston rod 110 and the connecting rod 210 are integrally formed, which ensures the concentricity, so that the cylinder body 100 runs smoothly, and meets the requirements of small resistance and uniform printing force of the adjusting cylinder 1000 for printing.

[0039] In this embodiment, an annular groove 111 is provided on the outer circumference of the piston rod 110, and an annular stopper 130 is embedded in the annular groove 111. The outer circumference of the annular stopper 130 is embedded in the inner ring of the piston 140 of the cylinder body 100, thereby connecting the piston rod 110 with the piston 140. Specifically, the annular stopper 130 is composed of two semi-annular components, so that when the annular stopper 130 is installed, the two semi-annular components can be inserted into the annular groove 111 from both sides of the piston rod 110, which facilitates the installation of the annular stopper 130.

[0040] The connecting sleeve 220 is connected to the rear end cover 120 of the cylinder body 100 . When the piston rod 110 of the cylinder reciprocates, it can drive the connecting rod 210 to slide back and forth in the connecting sleeve 220 .

[0041] Reference Figures 2 to 4 , the rear push rod 200 is provided with a scale line 221, and the reading of the scale line 221 gradually increases in the direction close to the cylinder body 100. Specifically, the scale line 221 is provided on the connecting sleeve 220, so that the reading on the scale line 221 will not be affected when the piston rod 110 slides back and forth. The adjusting rod 300 can move axially relative to the rear push rod 200 to change the degree of shielding of the scale line 221. When the adjusting rod 300 is rotated to make the rear push rod 200 move axially relative to the adjusting rod 300, the degree of shielding of the scale line 221 by the adjusting rod 300 changes. By reading the reading on the scale line 221 with the end of the adjusting rod 300 close to the cylinder body 100 as a reference, the distance moved by the cylinder body 100 can be obtained. Compared with the method of setting the scale line 221 on the adjustment rod 300, in this embodiment, no additional reference sleeve is required, the structure of the adjustment rod 300 is fully utilized, the parts of the finished product are reduced, and the production cost and assembly complexity are reduced.

[0042] Reference Figures 2 to 4 The adjusting rod 300 includes a connecting portion 320, a front sleeve 310 and a rear sleeve 330. The front sleeve 310, the connecting portion 320 and the rear sleeve 330 are coaxially connected in sequence. The front sleeve 310 is arranged on the side of the connecting portion 320 facing the cylinder body 100, and the rear sleeve 330 is arranged on the side of the connecting portion 320 away from the cylinder body 100.

[0043] The front sleeve 310 is coaxially sleeved outside the connecting rod 210 and the connecting sleeve 220, and a gap is formed between the front sleeve 310 and the connecting sleeve 220. The connecting portion 320 is annular, and the portion of the connecting rod 210 extending out of the connecting sleeve 220 is passed through the connecting portion 320 and threadedly connected to the connecting portion 320.

[0044] Reference Figure 2 , Figure 3 and Figure 5 A ring-shaped protrusion 321 is protruded outwardly from the circumference of the middle part of the connecting part 320. The side of the protrusion 321 close to the front sleeve 310 and the circumference of the connecting part 320 form a first step 322, and the side of the protrusion 321 close to the rear sleeve 330 and the circumference of the connecting part 320 form a second step 323. External threads are provided on the first step 322 and the second step 323, and internal threads are provided on the inner walls of the ends facing each other (i.e., the ends facing the connecting part 320) of the front sleeve 310 and the rear sleeve 330. The end of the front sleeve 310 close to the connecting part 320 is sleeved outside the first step 322 and threadedly matched with the first step 322, and the end of the rear sleeve 330 close to the connecting part 320 is sleeved outside the second step 323 and threadedly matched with the second step 323.

[0045] Thus, by rotating the front sleeve 310 and the rear sleeve 330 relative to the protruding portion 321, the connection of the adjusting rod 300 can be achieved, and the adjusting rod 300 is easy to assemble and reliably connected. The front sleeve 310 and the rear sleeve 330 are respectively matched with the first step 322 and the second step 323, so that the outer periphery of the protruding portion 321 can be flush with the outer periphery of the front sleeve 310 and the outer periphery of the rear sleeve 330. This arrangement ensures that the connection portion 320 is reliably connected and fastened with the front sleeve 310 and the rear sleeve 330, while ensuring that the outer periphery of the adjusting rod 300 is smooth.

[0046] Reference Figures 1 to 5 The adjusting rod 300 is provided with a mounting hole 324 in the radial direction, and the mounting hole 324 penetrates the inner wall of the adjusting rod 300. Specifically in this embodiment, the radially outward opening of the mounting hole 324 is located on the protruding portion 321, and the mounting hole 324 penetrates the protruding portion 321 and the connecting portion 320.

[0047] A damping member 340 and a top screw 350 are installed in the mounting hole 324. The damping member 340 abuts against the outer periphery of the connecting rod 210, and the top screw 350 abuts against the side of the damping member 340 away from the outer periphery of the connecting rod 210 and is threadedly matched with the mounting hole 324. Thus, by rotating the adjusting rod 300, the connecting portion 320 rotates relative to the connecting rod 210, so that the rear push rod 200 can move relative to the adjusting rod 300, and then the cylinder body 100 moves, so as to achieve fine adjustment of the position of the cylinder body 100. The damping member 340 is inserted into the mounting hole 324 and abuts against the outer periphery of the connecting rod 210, and is limited in the mounting hole 324 by the top screw 350, so that the adjusting rod 300 has a certain damping force when rotating. In this structure, the mounting hole 324 is easy to process. When installing the damping member 340, it is only necessary to insert the damping member 340 into the mounting hole 324 and limit the position with the top screw 350. The installation operation is relatively convenient and the cost is low.

[0048] In addition, in other embodiments, the mounting hole 324 may also be provided at other locations on the connecting portion 320 , so that the damping member 340 can be confined in the mounting hole 324 and pressed against the connecting rod 210 .

[0049] The damping member 340 is a cylindrical member adapted to the mounting hole 324, that is, the diameter of the damping member 340 is close to the diameter of the mounting hole 324, so that the damping member 340 is not easy to shake after being installed in the mounting hole 324. Both ends of the damping member 340 are gradually reduced in a frustum shape away from the middle, so that the installation and removal of the damping member 340 are convenient, and the edge of the damping member 340 is not easy to be damaged due to stress concentration.

[0050] In this embodiment, the connecting portion 320, the front sleeve 310 and the rear sleeve 330 are coaxially connected and have the same outer diameter, so that the outer surface of the protrusion 321, the outer surface of the front sleeve 310 and the outer surface of the rear sleeve 330 are located in the same cylindrical surface, the outer circumferential surface of the connecting rod 210 has a smooth transition, a compact structure, a beautiful appearance, and is convenient for processing the adjustment rod 300.

[0051] The inner diameter of the front sleeve 310 and the inner diameter of the rear sleeve 330 are both larger than the inner diameter of the connecting portion 320, that is, the thickness of the middle connecting portion 320 is larger, so as to facilitate threaded engagement with the connecting rod 210. Thus, when the connecting portion 320 is threadedly connected to the rear push rod 200, the thickness of the front sleeve 310 and the rear sleeve 330 is smaller, thereby reducing their consumables and weight.

[0052] The inner wall of one end of the front sleeve 310 away from the connecting portion 320 is coaxially connected with a filling ring 360, and the filling ring 360 is located in the interlayer formed between the front sleeve 310 and the connecting sleeve 220. The front sleeve 310 is sleeved outside the connecting sleeve 220 as a reference for the reading of the scale line 221, and the inner wall of one end of the front sleeve 310 away from the connecting portion 320 is connected with the filling ring 360 to reduce the gap between the end of the front sleeve 310 and the connecting sleeve 220, thereby reducing the visual error when reading the reading on the scale line 221.

[0053] The connecting rod 210 passes through the connecting portion 320 and is connected to a limiting piece 230, the limiting piece 230 is located at a side of the connecting portion 320 away from the cylinder body 100, and the diameter of the limiting piece 230 is greater than the inner diameter of the connecting portion 320. Thus, the limiting piece 230 blocks the side of the connecting portion 320 away from the cylinder body 100 to limit the connecting portion 320, so that the connecting portion 320 is not easy to fall off the connecting rod 210 when rotating relative to the connecting rod 210, so that the printing regulating cylinder 1000 can work stably.

[0054] In this embodiment, the limiting piece 230 is fixed to a side of the connecting rod 210 away from the cylinder body 100 by screws.

[0055] The above are only preferred implementations of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles of the scope of the present utility model patent application are included in the scope of the present utility model patent application.

Claims

1. A printing regulating cylinder, comprising a cylinder body (100), a rear push rod (200) and an regulating rod (300), wherein the rear push rod (200) is connected to a side of the cylinder body (100) away from a driving end of a piston rod (110), and the regulating rod (300) is sleeved outside the rear push rod (200) and threadedly matched with the rear push rod (200), characterized in that: A mounting hole (324) is radially opened on the peripheral side of the adjusting rod (300), and the mounting hole (324) passes through the inner wall of the adjusting rod (300); a damping member (340) and a top screw (350) are installed in the mounting hole (324), and the damping member (340) abuts against the rear push rod (200), and the top screw (350) abuts against a side of the damping member (340) away from the outer periphery of the rear push rod (200) and is threadedly matched with the mounting hole (324).

2. A printing regulating cylinder as claimed in claim 1, characterized in that: The rear push rod (200) is provided with a scale line (221), and the reading value of the scale line (221) gradually increases in a direction approaching the cylinder body (100); the adjustment rod (300) can move axially relative to the rear push rod (200) to change the degree of shielding of the scale line (221).

3. A printing regulating cylinder as claimed in claim 2, characterized in that: The adjusting rod (300) comprises a connecting portion (320), a front sleeve (310) and a rear sleeve (330); the connecting portion (320) is threadedly engaged with the rear push rod (200); the mounting hole (324) is arranged on the connecting portion (320); the front sleeve (310) is connected to a side of the connecting portion (320) facing the cylinder body (100), and the rear sleeve (330) is connected to a side of the connecting portion (320) away from the cylinder body (100); at least a portion of the front sleeve (310) can block the scale line (221).

4. A printing regulating cylinder as claimed in claim 3, characterized in that: The connecting portion (320), the front sleeve (310) and the rear sleeve (330) are coaxially connected and have the same outer diameter, and the inner diameter of the front sleeve (310) and the inner diameter of the rear sleeve (330) are both larger than the inner diameter of the connecting portion (320).

5. A printing regulating cylinder as claimed in claim 3, characterized in that: The rear push rod (200) comprises a connecting rod (210) and a connecting sleeve (220), the connecting rod (210) passes through the connecting sleeve (220) and is threadedly engaged with the connecting portion (320), and the scale line (221) is arranged on the outer periphery of the connecting sleeve (220); The front sleeve (310) is sleeved outside the connecting sleeve (220), and a filling ring (360) is coaxially connected to the inner wall of one end of the front sleeve (310) away from the connecting portion (320), and the filling ring (360) is located in the interlayer formed between the front sleeve (310) and the connecting sleeve (220).

6. A printing regulating cylinder as claimed in claim 5, characterized in that: The connecting rod (210) is integrally formed with the piston rod (110) of the cylinder body (100), and the connecting sleeve (220) is connected to the rear end cover (120) of the cylinder body (100).

7. A printing regulating cylinder as claimed in claim 5, characterized in that: The connecting rod (210) passes through the connecting portion (320) and is connected to a limiting plate (230). The limiting plate (230) is located on a side of the connecting portion (320) away from the cylinder body (100). The diameter of the limiting plate (230) is greater than the inner diameter of the connecting portion (320).

8. A printing regulating cylinder as claimed in claim 3, characterized in that: A protrusion (321) is protruded outward from the middle of the connecting portion (320), and a first step (322) is formed between the side of the protrusion (321) close to the front sleeve (310) and the peripheral side of the connecting portion (320), and a second step (323) is formed between the side of the protrusion (321) close to the rear sleeve (330) and the peripheral side of the connecting portion (320). External threads are provided on the first step (322) and the second step (323), and internal threads are provided on the inner walls of the facing ends of the front sleeve (310) and the rear sleeve (330), and the front sleeve (310) is sleeved outside the first step (322) and threadedly engaged with the first step (322), and the rear sleeve (330) is sleeved outside the second step (323) and threadedly engaged with the second step (323).

9. A printing regulating cylinder as claimed in claim 8, characterized in that: The mounting hole (324) is opened in the protruding portion (321), and the outer surface of the protruding portion (321), the outer surface of the front sleeve (310), and the outer surface of the rear sleeve (330) are located in the same cylindrical surface.

10. The adjusting cylinder for printing as claimed in claim 1, characterized in that: The damping member (340) is a cylindrical component adapted to the mounting hole (324), and both ends of the damping member (340) are in a gradually shrinking frustum shape in a direction away from the middle.

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