Transfer printing device of offset printing mechanism

Abstract

The utility model relates to a transfer printing device of an offset printing mechanism, which is characterized in that a lifting seat in a transfer printing swing driving mechanism of a transfer printing lifting swing arm is in transmission connection with a lifting driving device, a first transmission rotating shaft is arranged on the lifting seat, a second transmission rotating shaft is arranged on the transfer printing lifting swing arm, and the first transmission rotating shaft is in transmission connection with the second transmission rotating shaft through a transmission arm; a rotary clutch eccentric sleeve is further arranged between the transmission arm and the first transmission rotating shaft and / or the second transmission rotating shaft, and the rotary clutch eccentric sleeve is in transmission connection with a corresponding rotary driving device. The transfer printing lifting swing arm can be driven by the lifting base in a matched mode to achieve large-stroke and large-range up-down lifting swing, and after the transfer printing lifting swing arm downwards swings in place, sufficient operation space is reserved above the transfer printing lifting swing arm, so that operation such as replacement and assembly of transfer printing rollers of different sizes is facilitated; and small-range swing lifting and switching between the pressing state and the pressure-separating state of the transfer printing roller can be achieved through additional operation of rotating the clutch eccentric sleeve.

Description

TECHNICAL FIELD

[0001] The utility model relates to printing equipment, especially relate to the transfer structure of offset printing mechanism. BACKGROUND

[0002] The offset printing equipment (such as the offset printing unit of printing machine) has plate roller, transfer roller and bottom roller (namely impression roller) cooperation offset printing work, wherein in order to continuous printing of different plate patterns, different diameter size plate roller can be replaced, and the diameter size of transfer roller also needs to be replaced accordingly, and the diameter size of plate roller and transfer roller is kept consistent within error range usually.

[0003] Therefore, it is crucial to meet the convenience of replacement and assembly of transfer roller, in addition, transfer roller and plate roller keep stable pressure printing state during the working of printing machine, and even the pressure during pressure is adjusted according to printing demand. INVENTION CONTENTS

[0004] In view of the technical problems in the background art, the utility model solves the technical problems and provides a transfer device of offset printing mechanism, which is stable in swing operation, facilitates replacement and assembly of transfer roller and ensures pressure state.

[0005] In order to solve the above technical problems, the utility model adopts the following technical scheme: the transfer device of offset printing mechanism includes the transfer lifting swing arm for installing the transfer roller, the transfer lifting swing arm is connected on the frame through the transfer support shaft, the transfer lifting swing arm is transmissionally connected with the transfer swing driving mechanism, and the transfer swing driving mechanism includes the lifting seat, the lifting driving device, the first transmission shaft, the second transmission shaft and the transmission arm, the lifting seat is transmissionally connected with the lifting driving device, the first transmission shaft is arranged on the lifting seat, the second transmission shaft is arranged on the transfer lifting swing arm, one end of the transmission arm is connected with the first transmission shaft, the other end of the transmission arm is connected with the second transmission shaft, and the first transmission shaft and the second transmission shaft are transmissionally connected through the transmission arm;The rotation clutch eccentric sleeve is further arranged between the transmission arm and the first transmission shaft and / or the second transmission shaft, the rotation clutch eccentric sleeve is transmissionally connected with the corresponding rotation driving device, and the corresponding rotation driving device is arranged on the lifting seat and / or the corresponding rotation driving device is arranged on the transfer lifting swing arm.

[0006] The above technical scheme can be further optimized or supplemented as follows.

[0007] For example, the transfer support shaft is located at the root of the transfer lifting swing arm, the second transmission shaft is located at the head of the transfer lifting swing arm, and the root and the head of the transfer lifting swing arm have the mounting portion for installing the transfer roller.

[0008] For example, the transfer lifting swing arm comprises a left swing arm and a right swing arm, the left swing arm is provided with a roll changing opening, and a roll body supporting end cover is arranged on the left swing arm and connected to the roll changing opening.

[0009] In addition, the first transmission shaft is arranged below the second transmission shaft, the transfer supporting shaft is located at the rear side of the second transmission shaft, the lifting seat is located at the front side of the second transmission shaft, and the transfer lifting swing arm is further provided with an arc-shaped guide rail for swing guiding and supporting.

[0010] The transfer lifting swing arm is provided with a plate roller station for cooperating with the transfer roller printing.

[0011] The lifting seat is arranged on the vertical guide rail, and the vertical guide rail is arranged on the rack; the lifting driving device comprises a lifting driving motor, a lifting driving screw rod and a lifting driving screw nut, the lifting driving motor is in transmission connection with the lifting driving screw rod, the lifting driving screw rod is in transmission connection with the lifting driving screw nut, the lifting driving screw nut is installed and connected to the lifting seat, and the lifting driving screw rod is vertically arranged.

[0012] In addition, the first transmission shaft is provided with a rotating clutch eccentric sleeve, one end of the transmission arm is sleeved on the second transmission shaft, the other end of the transmission arm is sleeved on the rotating clutch eccentric sleeve, the rotating driving device comprises a rotating driving cylinder, the rotating driving cylinder is connected to the lifting seat, the rotating clutch eccentric sleeve is provided with a connecting swing arm, and the connecting swing arm is in transmission connection with the rotating driving cylinder.

[0013] Further optimization, the lifting seat is further connected with an eccentric sleeve rotation limiting adjustment device.

[0014] The rotating driving cylinder has a push-pull piston rod, the cylinder body of the rotating driving cylinder is hingedly arranged on the lifting seat, and the push-pull piston rod is hingedly connected to the connecting swing arm; for example, the eccentric sleeve rotation limiting adjustment device comprises a limiting part, the limiting part is located at the head of a limiting shaft displacement adjusting rod arranged on the lifting seat.

[0015] For example, the rotating driving cylinder and the limiting part are respectively arranged on the upper side and the lower side of the connecting swing arm.

[0016] The utility model discloses a beneficial effect for, the transfer printing device of this offset printing mechanism, transfer printing lift swing arm can be not only lifted seat cooperation drive realizes big stroke, the up and down lift swing of big range, and transfer printing lift swing arm swing to place after downward, and transfer printing lift swing arm top leaves out the operation space of sufficient replacement assembly etc. operation of different size's transfer printing roller, and transfer printing lift swing arm can (under the condition that lift seat moves (such as ascending) to place) by the additional operation of rotary clutch eccentric sleeve realizes small range swing lift, and the switching of transfer printing roller pressure combination in printing operation, even can through the rotation angle position of operation rotary clutch eccentric sleeve can adjust the pressure size of pressure combination according to the printing demand, fine adjustment pressure combination point position, ensure pressure combination pressure state. Wherein, transfer printing roller will with the plate roll on top carry out pressure combination and pressure release cooperation. Wherein, the up and down lift swing (arc track) of transfer printing lift swing arm is driven by the lift linear motion cooperation of lift seat, and the lift operation of lift seat is relatively stable, and one end of transfer printing lift swing arm is not only supported by transfer printing support shaft cooperation, but also is supported by second transmission pivot cooperation to transfer printing lift swing arm and carries out another support transmission, and transfer printing lift swing arm swing operation is relatively stable. BRIEF DESCRIPTION OF DRAWINGS

[0017] The relevant details and working principles of the embodiments of the utility model will be described below in combination with the drawings.

[0018] Figure 1 It is the structural schematic diagram of the utility model.

[0019] Figure 2 It is Figure 1 It is the sectional view of A-A.

[0020] In the drawing:

[0021] 1, transfer printing roller; 10, roll shaft;

[0022] 2, transfer printing lift swing arm; 20, transfer printing support shaft; 21, left swing arm; 22, roll replacement port; 23, roll body support end cover; 24, movable lock block;

[0023] 3, transfer printing swing drive mechanism; 30, lift seat; 31, first transmission pivot; 32, second transmission pivot; 33, transmission arm; 34, lift drive device; 35, rotary clutch eccentric sleeve; 36, rotary drive device; 37, vertical guide rail; 38, eccentric sleeve rotation limiting adjusting device;

[0024] 341, lift drive motor; 342, lift drive screw;

[0025] 351, coupling swing arm;

[0026] 361, rotary drive cylinder; 3611, push-pull piston rod; 3612, cylinder body;

[0027] 381, limiting part; 382, limiting shaft displacement adjusting rod;

[0028] 4, rack; 41, arc-shaped guide rail;

[0029] 6, plate roller. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.

[0031] Referring to the drawings, the transfer device of the offset printing mechanism in the embodiments of the present embodiment comprises a transfer lifting swing arm 2, the transfer lifting swing arm 2 is provided for mounting a transfer roller 1, the transfer lifting swing arm 2 is connected to a rack 4 through a transfer support shaft 20, the transfer lifting swing arm 2 is supported by the transfer support shaft 20 to perform up-down lifting swing on the rack 4, the transfer roller 1 (such as a roller shaft 10 and a roller cylinder of the transfer roller 1) can be mounted on the transfer lifting swing arm 2 and can perform position adjustment by up-down lifting swing together with the transfer lifting swing arm 2, so as to meet different requirements, for example, the transfer lifting swing arm 2 is lifted to lift the transfer roller 1 to perform compression for printing work, the transfer lifting swing arm 2 is lowered to lower the transfer roller 1 to perform separation for replacing the transfer roller 1. The transfer lifting swing arm 2 is drivingly connected with a transfer swing driving mechanism 3, and the transfer lifting swing arm 2 is driven by the transfer swing driving mechanism 3 to perform up-down lifting swing.

[0032] The transfer swing driving mechanism 3 comprises a lifting seat 30, a lifting driving device 34, a first transmission shaft 31, a second transmission shaft 32, a transmission arm 33 and a rotary clutch eccentric sleeve 35. The lifting seat 30 is drivingly connected with the lifting driving device 34, the first transmission shaft 31 is arranged on the lifting seat 30 and is driven by the lifting driving device 34 to perform up-down lifting, and the first transmission shaft 31 performs up-down lifting action together with the lifting seat 30. The second transmission shaft 32 is arranged on the transfer lifting swing arm 2, and the transfer lifting swing arm 2 performs up-down action together with the second transmission shaft 32. One end of the transmission arm 33 is connected with the first transmission shaft 31, and the other end of the transmission arm 33 is connected with the second transmission shaft 32,

[0033] The first transmission shaft 31 and the second transmission shaft 32 are drivingly connected through the transmission arm 33. When the first transmission shaft 31 performs up-down lifting action together with the lifting seat 30, the first transmission shaft 31 can drive the second transmission shaft 32 on the transfer lifting swing arm 2 through the transmission arm 33 (push-pull), so that the transfer lifting swing arm 2 performs up-down lifting swing around the transfer support shaft 20.

[0034] The transmission arm 33 is further provided with a rotation clutch eccentric sleeve 35 between the first transmission shaft 31 and / or the second transmission shaft 32; one or both positions can be provided; in the embodiment shown in the figure, the rotation clutch eccentric sleeve 35 is provided between the transmission arm 33 and the first transmission shaft 31. In addition, the rotation clutch eccentric sleeve 35 is driven by a corresponding rotation driving device 36, and the rotation clutch eccentric sleeve 35 is driven to rotate by the rotation driving device 36, so as to change the relative position between the transmission arm 33 and the first transmission shaft 31 and / or the second transmission shaft 32, realize the additional small-range (matching the eccentric range of the eccentric sleeve) swing and lifting of the transfer printing lifting swing arm 2 and the transfer printing roller 1 installed thereon, and cooperate with the switching of the pressure-on and pressure-off states in the printing operation. The corresponding rotation driving device 36 is provided on the lifting seat 30 and / or the corresponding rotation driving device 36 is provided on the transfer printing lifting swing arm 2; for example, the rotation clutch eccentric sleeve 35 is connected to the first transmission shaft 31, and the corresponding rotation driving device 36 can be arranged on the lifting seat 30; for example, the rotation clutch eccentric sleeve 35 is connected to the second transmission shaft 32, and the corresponding rotation driving device 36 can be arranged on the transfer printing lifting swing arm 2.

[0035] When it is necessary to replace and disassemble the transfer printing roller 1, the lifting seat 30 is actuated (e.g., lowered) to drive the transfer printing lifting swing arm 2 to swing downward through the transmission arm 33, so as to leave sufficient operation space above to facilitate the replacement and assembly of the transfer printing roller 1 and other operations, such as disassembly, maintenance, etc. Of course, the downward swing of the transfer printing lifting swing arm 2 can also separate the transfer printing roller 1 from other structures above, so that the transfer printing roller 1 is in an idle state (e.g., when the machine is stopped). The lifting seat 30 is actuated (e.g., raised) to drive the transfer printing lifting swing arm 2 to swing upward through the transmission arm 33, so as to make the transfer printing roller 1 installed thereon approach other structures (e.g., plate roller 6) above for printing operation. When the lifting seat 30 is actuated to the position, the transfer printing lifting swing arm 2 also swings upward to the position. Thereafter, the rotation clutch eccentric sleeve 35 can be additionally rotated to drive the transfer printing lifting swing arm 2 and the transfer printing roller 1 installed thereon to additionally swing and lift in a small range (matching the eccentric range of the eccentric sleeve), so as to cooperate with the switching of the pressure-off (i.e., disengagement) and pressure-on states in the printing operation.

[0036] The transfer device of the offset printing mechanism, the transfer lifting swing arm 2 can not only be driven by the lifting seat 30 to realize large stroke and large range up-down swing, but also can be additionally operated by the rotary clutch eccentric sleeve 35 to realize small range swing and lift under the condition that the lifting seat 30 moves (such as rises) to the position, cooperate with the switching of the transfer roller 1 in the printing operation, even can adjust the pressure size during the pressure according to the printing requirement by operating the rotation angle position of the rotary clutch eccentric sleeve 35, fine adjustment of the pressure point, ensure the pressure state. Among them, the transfer roller 1 will be pressed and separated with the upper plate roller 6. Among them, the up-down swing (arc track) of the transfer lifting swing arm 2 is driven by the lifting linear action of the lifting seat 30, the lifting operation of the lifting seat 30 is relatively stable, and one end of the transfer lifting swing arm 2 is not only supported by the transfer support shaft 20, but also supported and driven by the second transmission shaft 32, the swing operation of the transfer lifting swing arm 2 is relatively stable.

[0037] The following optimization or further description can be made on the basis of the above embodiments respectively.

[0038] For example, the transfer support shaft 20 is located at the root of the transfer lifting swing arm 2, the second transmission shaft 32 is located at the head of the transfer lifting swing arm 2, the root and the head of the transfer lifting swing arm 2 have a mounting part for mounting the transfer roller 1, forming a two-end support structure of the transfer lifting swing arm 2, the up-down swing operation is more stable, and the transfer roller 1 operation is also relatively stable.

[0039] It can be further optimized that the transfer lifting swing arm 2 includes a pair of left swing arm 21 and right swing arm, the left swing arm 21 is provided with a roller changing port 22, the roller changing port 22 is used for facilitating the axial movement and replacement of the transfer roller 1 (such as its roller cylinder); the left swing arm 21 is provided with a roller body support end cover 23, the roller body support end cover 23 is connected at the roller changing port 22, the roller body support end cover 23 is used for supporting the transfer roller 1 (such as its roller shaft 10) at the roller changing port 22, the roller body support end cover 23 can adopt a detachable structure, for example, the roller body support end cover 23 is hinged on the left swing arm 21 and locked by the movable lock block 24.

[0040] In addition, the first transmission shaft 31 is arranged below the second transmission shaft 32, and the first transmission shaft 31 can support the second transmission shaft 32 from below, and the structure is relatively more stable. The transfer support shaft 20 is located at the rear side of the second transmission shaft 32, and the lifting seat 30 is located at the front side of the second transmission shaft 32, and the space structure layout is reasonable, facilitating assembly. The transfer lifting swing arm 2 is also provided with an arc-shaped guide rail 41 for swing guiding and supporting, so that the transfer lifting swing arm 2 can stably swing, and the arc-shaped guide rail 41 can be mounted on the rack 4, and the arc-shaped guide rail 41 can be arranged at the swing distal end (i.e. the head) of the transfer lifting swing arm 2.

[0041] The upper side of the transfer lifting swing arm 2 is provided with a plate roller station for cooperating with the transfer roller 1 to print, and the plate roller station is provided with a corresponding plate roller 6 (such as a roller barrel and a roller shaft). So that the transfer roller 1 on the transfer lifting swing arm 2 can be combined with the plate roller 6 in the plate roller station above when it rises.

[0042] The lifting seat 30 can be arranged on the vertical guide rail 37, and the vertical guide rail 37 can be mounted on the rack 4, and the lifting seat 30 can stably rise and fall vertically. The lifting drive device 34 comprises a lifting drive motor 341 (such as a servo motor), a lifting drive screw 342 and a lifting drive nut, the lifting drive motor 341 is in transmission connection with the lifting drive screw 342, the lifting drive screw 342 is in transmission connection with the lifting drive nut, and the lifting drive nut is mounted and connected on the lifting seat 30; the lifting drive screw 342 is vertically arranged; the lifting drive nut is driven to rise and fall by the lifting drive motor 341 through the lifting drive screw 342, and the lifting seat 30 is lifted on the vertical guide rail 37; the lifting drive structure runs stably, and can be relatively accurately stopped at a preset position, and can keep the position stable after stopping and is not easy to loosen, ensuring the printing stability and being able to withstand the pressure during printing.

[0043] In the chart, an embodiment of the position of the rotary clutch eccentric sleeve 35 is set: the rotary clutch eccentric sleeve 35 is sleeved on the first transmission shaft 31; one end of the transmission arm 33 is sleeved on the second transmission shaft 32, and the other end of the transmission arm 33 is sleeved on the rotary clutch eccentric sleeve 35, that is, the two end round holes of the transmission arm 33 are matched and sleeved on the second transmission shaft 32 and the rotary clutch eccentric sleeve 35 respectively to form a connecting rod transmission structure, wherein the rotary clutch eccentric sleeve 35 is arranged between the transmission arm 33 and the first transmission shaft 31; in addition, the rotary driving device 36 comprises a rotary driving cylinder 361, the rotary driving cylinder 361 is connected to the lifting seat 30, the rotary driving cylinder 361 rises and falls together with the lifting seat 30 and can drive the rotary clutch eccentric sleeve 35 to rotate to change the relative position; in addition, the rotary clutch eccentric sleeve 35 has a connecting swing arm 351, the connecting swing arm 351 rotates together with the rotary clutch eccentric sleeve 35 (which can be an integral structure or a split structure), the connecting swing arm 351 is in transmission connection with the rotary driving cylinder 361, the connecting swing arm 351 is driven to swing by the rotary driving cylinder 361, so that the rotary clutch eccentric sleeve 35 can be driven to rotate (back and forth), in this structure, not only the transmission is reasonable, but also subsequent limit adjustment is facilitated.Further, the eccentric sleeve rotation limiting and adjusting device 38 is connected to the lifting seat 30, which limits and adjusts the rotation position of the rotation and clutch eccentric sleeve 35 to ensure that the rotation angle position of the rotation and clutch eccentric sleeve 35 is at a position with appropriate compression pressure, and the compression pressure state is reasonable. For example, the rotation driving cylinder 361 has a push-pull piston rod 3611, the cylinder body 3612 of the rotation driving cylinder 361 is hingedly arranged on the lifting seat 30, the push-pull piston rod 3611 is hingedly connected with the connecting swing arm 351, and the eccentric sleeve rotation limiting and adjusting device 38 includes a limiting part 381 located at the head of a limiting shaft moving adjusting rod 382 (such as a lead screw), which is arranged on the lifting seat 30. The position of the limiting part 381 on the lifting seat 30 is adjusted by adjusting the position of the limiting shaft moving adjusting rod 382 (such as a lead screw, which can be driven to rotate by a motor or a hand wheel), and the adjusting direction of the limiting shaft moving adjusting rod 382 is up and down. When the push-pull piston rod 3611 drives the connecting swing arm 351 to rotate to the position, the limiting part 381 blocks the connecting swing arm 351 to smoothly reach the position. For example, the rotation driving cylinder 361 and the limiting part 381 are arranged on the upper and lower sides of the connecting swing arm 351, respectively. The limiting part 381 is located on the lower side of the connecting swing arm 351, and the rotation driving cylinder 361 is located on the upper side of the connecting swing arm 351. The height position of the limiting part 381 is different, which can resist the position of the connecting swing arm 351 driven downward by the rotation driving cylinder 361. The push-pull piston rod 3611 of the rotation driving cylinder 361 can be pushed to the position, which has high stability and can limit and adjust the rotation position of the rotation and clutch eccentric sleeve 35 to ensure that the rotation angle position of the rotation and clutch eccentric sleeve 35 is at a position with appropriate compression pressure, and the compression pressure state is reasonable. Of course, other rotation driving devices 36 and eccentric sleeve rotation limiting and adjusting devices 38 can also be selected, such as the limiting and adjusting lead screw of the eccentric sleeve rotation limiting and adjusting device 38 arranged on the lifting seat 30.

Claims

1. A transfer device of a printing mechanism, comprising a transfer lifting swing arm (2) for mounting a transfer roller (1), the transfer lifting swing arm (2) is connected to a frame (4) through a transfer support shaft (20), the transfer lifting swing arm (2) is drivingly connected with a transfer swing driving mechanism (3), characterized in that: the transfer swing driving mechanism (3) comprises a lifting seat (30), a lifting driving device (34), a first transmission shaft (31), a second transmission shaft (32) and a transmission arm (33), the lifting seat (30) is drivingly connected with the lifting driving device (34), the first transmission shaft (31) is arranged on the lifting seat (30), the second transmission shaft (32) is arranged on the transfer lifting swing arm (2), one end of the transmission arm (33) is connected with the first transmission shaft (31), and the other end of the transmission arm (33) is connected with the second transmission shaft (32), the first transmission shaft (31) and the second transmission shaft (32) are drivingly connected through the transmission arm (33); a rotary clutch eccentric sleeve (35) is further arranged between the transmission arm (33) and the first transmission shaft (31) and / or the second transmission shaft (32), and the rotary clutch eccentric sleeve (35) is drivingly connected with a corresponding rotary driving device (36), the corresponding rotary driving device (36) is arranged on the lifting seat (30) and / or the corresponding rotary driving device (36) is arranged on the transfer lifting swing arm (2).

2. The transfer apparatus of the offset printing mechanism according to claim 1, characterized in that: the transfer support shaft (20) is located at the root of the transfer lifting swing arm (2), and the second transmission shaft (32) is located at the head of the transfer lifting swing arm (2), the root and the head of the transfer lifting swing arm (2) have a mounting portion for mounting the transfer roller (1).

3. The transfer apparatus of claim 1 wherein: the transfer lifting swing arm (2) comprises a pair of left and right swing arms, a roll changing opening (22) is arranged on the left swing arm (21), a roller body support end cover (23) is arranged on the left swing arm (21), and the roller body support end cover (23) is connected at the roll changing opening (22).

4. The transfer apparatus of claim 1 wherein: the first transmission shaft (31) is arranged below the second transmission shaft (32), the transfer support shaft (20) is located at the rear side of the second transmission shaft (32), the lifting seat (30) is located at the front side of the second transmission shaft (32), and the transfer lifting swing arm (2) is further provided with an arc-shaped guide rail (41) for swing guiding and supporting.

5. The transfer apparatus of claim 1 wherein: an impression roller station for cooperating with the transfer roller (1) for printing is arranged above the transfer lifting swing arm (2).

6. The transfer apparatus of claim 1 wherein: the lifting seat (30) is arranged on a vertical guide rail (37) arranged on the frame, the lifting driving device (34) comprises a lifting driving motor (341), a lifting driving screw (342) and a lifting driving nut, the lifting driving motor (341) is drivingly connected with the lifting driving screw (342), and the lifting driving screw (342) is drivingly connected with the lifting driving nut; the lifting driving nut is mounted and connected on the lifting seat (30), and the lifting driving screw (342) is vertically arranged.

7. The transfer apparatus of claim 1 wherein: the rotary clutch eccentric sleeve (35) is sleeved on the first transmission shaft (31), one end of the transmission arm (33) is sleeved on the second transmission shaft (32), the other end of the transmission arm (33) is sleeved on the rotary clutch eccentric sleeve (35), The rotary driving device (36) comprises a rotary driving cylinder (361) connected to the lifting seat (30), The rotary driving cylinder (361) has a push-pull piston rod (3611), and the cylinder body (3612) of the rotary driving cylinder (361) is hingedly arranged on the lifting seat (30), and the push-pull piston rod (3611) is hingedly connected with the coupling swing arm (351), 8. The transfer apparatus of claim 7, wherein: The lifting seat (30) is further connected with an eccentric sleeve rotary limiting adjusting device (38).

9. The transfer device of the offset printing mechanism according to claim 8, characterized in that: The rotary driving cylinder (361) has a push-pull piston rod (3611), and the cylinder body (3612) of the rotary driving cylinder (361) is hingedly arranged on the lifting seat (30), and the push-pull piston rod (3611) is hingedly connected with the coupling swing arm (351), The eccentric sleeve rotary limiting adjusting device (38) comprises a limiting part (381) located at the head of a limiting shaft displacement adjusting rod (382) arranged on the lifting seat (30).

10. The transfer device of the offset printing mechanism according to claim 9, characterized in that: The rotary driving cylinder (361) and the limiting part (381) are respectively arranged on the upper and lower sides of the coupling swing arm (351).

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