WO2020015275A1

WO2020015275A1 - Traction device of printing machine

Info

Publication number: WO2020015275A1
Application number: PCT/CN2018/118948
Authority: WO
Inventors: 姚飞
Original assignee: 南京纳华动漫有限公司
Priority date: 2018-07-16
Filing date: 2018-12-03
Publication date: 2020-01-23
Also published as: CN109109454A; CN109109454B

Abstract

Disclosed is a traction device of a printing machine, comprising an outer plate (1), an inner plate (7), support portions (5, 20) for connecting the outer plate (1) and the inner plate (7), a movable roller assembly located between the outer plate (1) and the inner plate (7), a bottom roller (21), and a rotating shaft (6), the movable roller assembly being displaceable relative to the bottom roller (21). The movable roller assembly is manually displaceable relative to the bottom roller (21), and has a simple structure and convenient operation.

Description

Traction device of printing machine

[Technical Field]

The invention relates to the field of printing presses, and in particular, to a traction device of a printing press.

【Background technique】

The traction of a printing press usually consists of a bottom roller and a movable roller on the surface of the soft material roller. The printed material passes between the two rollers and is attached to the surface of the bottom roller. The bottom roller is driven by the motor to rotate the pulley to work. At the time, the movable roller is tightly pressed against the bottom roller, and the printed material is tightly pressed against the bottom roller. The movable roller usually uses a cylinder to drive the relevant parts to press the movable roller and the roller surface together. Generally, the pneumatic structure is used to press the paper. The structure of the traction device is high in cost, complicated in structure, large in size and difficult to install and maintain. Due to the small structure and low cost of the inkjet printing machine, it is not suitable to adopt this structure.

Therefore, a traction device of a printing press is needed to overcome the disadvantages of the prior art.

[Summary of the Invention]

The main purpose of the present invention is to provide a traction device for a printing press, which has a simple structure and low cost.

In order to solve the above technical problems, the present invention adopts the following technical solution: A traction device of a printing press includes an outer plate, an inner plate, a support portion connecting the outer plate and the inner plate, and located between the outer plate and the inner plate. A movable roller assembly, a bottom roller, and a rotating shaft, the movable roller assembly is displaceable relative to the bottom roller.

In order to solve the above technical problem, the present invention is further provided that the movable roller assembly has a movable roller, a pair of rotary pressing blocks installed at both ends of the movable roller, and pins for mounting the rotary pressing blocks to the inner plate and the outer plate. A shaft, and the rotary pressing block rotates around the pin to drive the movable roller to move away from or close to the bottom roller.

In order to solve the above technical problem, the present invention further provides that the rotary pressing block has a fitting portion at an end portion thereof, and both ends of the rotating shaft have flat portions that cooperate with the rotating pressing block, and when the rotating shaft is rotated, the rotating shaft The flat part is in close contact with the mating part. The rotary pressing block rotates around the pin axis in the first direction to move the movable roller toward the bottom roller. When the rotating shaft is rotated again, the flat part cooperates with the mating part. The rotating pressure block rotates around the pin axis in the second direction to move the movable roller in a direction away from the bottom roller.

In order to solve the above technical problem, the present invention is further provided that: the mounting position of the movable roller on the rotary pressing block is located between the pin shaft and the fitting portion.

In order to solve the above technical problem, the present invention is further provided that the movable roller assembly further has a compression spring and a spring mounting device, and the spring mounting device installs the compression spring on the mating portion of the rotary pressure block, under the action of the elastic force of the spring , The rotary pressing block is close to the rotating shaft.

To solve the above technical problem, the present invention further provides that the spring mounting device is a mounting block and a spring pressing block, and the mounting block installs the spring pressing block on the inner plate and the outer plate, and the spring pressing A block penetrates the mounting block and abuts an end of the compression spring. The spring pressing block has a large shaft and a small shaft with different diameters, and the large shaft has a screw thread that cooperates with the mounting block. A small shaft penetrates into a spring hole of the compression spring, and an end surface of the large shaft abuts on an end surface of the compression spring.

In order to solve the above technical problem, the present invention is further provided that the inner plate and the outer plate have bearings at both ends of the rotating shaft, a handle is installed at one end of the rotating shaft, and the rotating shaft passes through the inner plate and the Install the hands together.

In order to solve the above technical problem, the present invention further provides that the inner plate and the outer plate have bearings for mounting the bottom roller, and one end of the bottom roller is provided with a synchronous wheel, and the synchronous wheel drives the bottom roller to rotate synchronously .

In order to solve the above technical problem, the present invention further provides that the fitting portion has a protrusion or a groove, one end of the compression spring is installed in the protrusion or the groove, and the other end is installed on the spring mounting device.

To solve the above technical problem, the present invention further provides that the handle is located on one side of the traction device of the printing press, and the synchronization wheel is located on the other side of the traction device of the printing press.

Furthermore, the traction device of the printing press provided by the present invention drives the movable roller to move toward or away from the bottom roller through the rotation of the rotary pressing block, and has a simple structure and convenient operation.

[Brief Description of the Drawings]

FIG. 1 is a schematic structural diagram of a traction device of a printing press according to the present invention.

FIG. 2 is a schematic structural view of the traction device of the printing press in FIG. 1 from another angle.

【detailed description】

Referring to FIG. 1 to FIG. 2, a basic composition structure of a traction device of a printing press in this example is given.

The traction device of the printing press includes an outer plate 1, an inner plate 7, an inner stay plate 5 connected to one side of the outer plate 1 and the inner plate 7, a support rod 20 connected to the other side of the outer plate and the inner plate 7, and an outer plate 1 and The movable roller assembly, the bottom roller 21, and the rotating shaft 6 between the inner plate 7, the traction device of the printing press also has a synchronization wheel 9, which drives the bottom roller 21 to rotate, and the two ends of the bottom roller 21 are mounted on A pair of bearings 8 on the inner plate and the outer plate is mounted together with the bearing cover 2 on the inner plate and the outer plate so that the bottom roller is positioned in the axial direction. Both ends of the rotating shaft 6 are mounted on the inner plate and the outer plate through bearings 10. One end of the rotating shaft 6 passes through the outer plate 1 and is connected to a handle base 4 located on the outer plate 1. The handle base 4 is tightly connected to the rotating shaft. The fixed screw achieves axial positioning, and the key is used to achieve the circumferential connection. The handle 3 and the handle seat 4 are connected by threads. The handle and the synchronization wheel are located on different sides of the inner plate and the outer plate to prevent interference with the synchronization wheel when the handle is in use. .

The movable roller assembly includes a movable roller 18, a pair of

rotary pressure blocks

16, 19 installed at both ends of the movable roller 18, a pin 17 for mounting the rotary pressure block to the inner plate 7 and the outer plate 1, respectively, and The rotating

pressure blocks

16 and 19 press the spring pressure block, the mounting block 12, and the compression spring 11 of the rotating shaft 6, and the mounting block 12 is installed on the inner plate and the outer plate. The spring pressure block 13 is a stepped shaft with a large shaft and a small axis. During installation, when the spring pressing block 13 is rotated through the mounting block 12, the threads on the large shaft cooperate with the mounting block 12, the small shaft penetrates into the spring hole of the compression spring, and the end face of the large shaft abuts on the end face of the compression spring. on. The rotary pressing block has a mating portion at one end, and the engaging portion has a protrusion or a groove for fixing the compression spring. One end of the compression spring 11 is fixed to the spring pressing block, and the other end is fixed to the protrusion or groove of the rotary pressing block. Both ends of the rotating shaft 6 have flat portions connected to the rotary pressing block. The installation position of the movable roller 18 on the rotary pressure block is located between the shaft pin 17 and the mating portion.

During operation, the rotating handle 3 drives the rotating shaft 6 to rotate, and the mating part of the rotating pressing block and the flat part of the rotating shaft 6 are closely abutted by the elastic force of a compression spring. The bottom roller 21 and the movable roller 18 rotate under the driving of the synchronous wheel 9; when not in operation, the handle is rotated in the reverse direction, and the rotary pressure block rotates counterclockwise around the pin shaft 17, and the movable roller 18 is far away from the bottom roller.

The proximity switch 15 is installed on the inner or outer plate through the mounting plate 14. The end of the rotary pressure block near the pin 17 is installed with an inductive switch probe. During operation, the end of the rotary pressure block is close to the proximity switch, so that the circuit is conductive. When it is on and not working, the rotation of the rotating shaft causes the rotary pressure block to rotate. The rotary pressure block is far from the end of the proximity switch, and the circuit is turned off to prevent someone from touching the main switch to start the traction device by mistake.

In addition, it should be understood that although this specification is described in terms of embodiments, not every embodiment includes only an independent technical solution. This description of the specification is for clarity only, and those skilled in the art should take the specification as a whole. The technical solutions in the embodiments can also be appropriately combined to form other implementations that can be understood by those skilled in the art.

Claims

A traction device of a printing press includes an outer plate (1), an inner plate (7), support portions (5, 20) connecting the outer plate (1), the inner plate (7), and the outer plate ( 1) The movable roller assembly, the bottom roller (21), and the rotating shaft (6) between the inner plate (7), wherein the movable roller assembly is displaceable relative to the bottom roller.
The traction device of a printing press according to claim 1, wherein the movable roller assembly comprises a movable roller (18), a pair of rotary pressing blocks (16, 19) installed at both ends of the movable roller, The rotary pressing block is mounted to a pin (17) of the inner plate and the outer plate, and the rotary pressing block rotates around the pin to drive the movable roller to move away from or close to the bottom roller (21).
The traction device for a printing press according to claim 2, wherein the rotary pressing block has a fitting portion at an end portion thereof, and both ends of the rotating shaft have flat portions that cooperate with the rotating pressing block, and when the rotating portion is rotated, When the shaft is rotated, the flat portion is in close contact with the mating portion, and the rotary pressure block (16, 19) rotates around the pin shaft in the first direction, so that the movable roller (18) is moved closer to the bottom roller (21). When the rotating shaft is rotated again, the flat portion is away from the mating portion, and the rotary pressing block rotates around the pin axis in the second direction to move the movable roller in a direction away from the bottom roller.
The traction device of a printing press according to claim 3, wherein the mounting position of the movable roller on the rotary pressure block is located between the pin shaft and the fitting portion.
The traction device of a printing press according to claim 2, characterized in that the movable roller assembly further comprises a compression spring (11) and a spring mounting device, wherein the spring mounting device mounts the compression spring on the mating portion of the rotary pressure block On the other hand, under the action of the elastic force of the spring, the rotary pressing block is close to the rotating shaft.
The traction device of a printing press according to claim 5, wherein the spring mounting device is a mounting block (12) and a spring pressing block (13), and the mounting block installs the spring pressing block on the spring The inner plate and the outer plate, the spring pressing block (13) penetrates the mounting block (12) and abuts an end of the compression spring, and the spring pressing block has a large shaft and a small shaft with different diameters, The large shaft has a thread that cooperates with the mounting block, the small shaft penetrates into a spring hole of the compression spring, and an end surface of the large shaft abuts on an end surface of the compression spring.
The traction device of a printing press according to claim 1, wherein the inner plate and the outer plate have bearings for mounting both ends of the rotating shaft, a handle is installed at one end of the rotating shaft, and the rotating shaft passes through the inner Installed behind the board with the handle.
The traction device for a printing press according to claim 1 or 7, wherein the inner plate and the outer plate have bearings (21) for mounting the bottom roller, and one end of the bottom roller is equipped with a timing wheel (9) ), The synchronous wheel drives the bottom roller to rotate synchronously.
The traction device of a printing press according to claim 5, wherein the fitting portion has a protrusion or a groove, one end of the compression spring is installed in the protrusion or the groove, and the other end is installed in the spring mounting device On.
The traction device of a printing press according to claim 8, wherein the handle is located on one side of the traction device of the printing press, and the synchronization wheel is located on the other side of the traction device of the printing press.