CN101722717B - Drive structure for charging and discharging plate of direct plate making machine and method for charging and discharging plate thereof - Google Patents

Abstract

A direct plate-making machine upper and lower plate transmission structure and its upper and lower plate method, which includes a first clamp, a tail clamp, a first clamp manipulator, a tail clamp manipulator, a first clamp sensor, a tail clamp sensor, a roller, a plate loader, a first pressure roller and a tail clamp. The pressure roller has a T-shaped groove on the surface of the cylinder, which slides and sleeves the first clamp and the tail clamp. The upper plate is a fixed structure, and the first pressure roller and the tail pressure roller can swing around the common rotation center. The core of the present invention is the movable first clamp relative to the roller, and the fixed plate loading device. This structural combination simplifies the structure on the one hand, because the first clip is not complicated at this time, it is basically the same as the tail clip, and the fixed plate loading device is far simpler than the swinging plate carrier, on the other hand, it leads to A simple plate movement process is established. When the plate is lowered, the plate can be directly pointed from the roller to the direction of the line, and there is no need to swing and reverse the movement through the plate holder.

Description

A direct plate-making machine upper and lower plate transmission structure and its upper and lower plate method

technical field

The invention relates to a PS plate direct plate-making machine for printing industry, which proposes a new, simple and effective printing plate transmission structure and its upper and lower plate method.

Background technique

The plate-to-plate machine (CTP) is an upgraded product of the laser phototypesetter. From a structural point of view, CTP is far more complicated than imagesetters. On the one hand, there is a difference in the optical system, and on the other hand, there is a difference in the plate. The hard aluminum-based PS plate of CTP leads to the complexity of the process and structure of the upper and lower plates.

The PS board is fixed on the roller, and there must be a first board clip and a tail board clip. According to the current popular structure, the position of the head clamp relative to the drum is fixed, while the tail clamp is movable to adapt to the change of the upper plate and the plate width. Because the first clamp is fixed, the plate can only be returned in the same way when it is lowered. Generally, the in-line plate processor is on the opposite side of the upper plate position. In order to make the plate enter the plate processor, the upper plate must be made into a swing structure. When the plate is loaded, it swings downward to make the plate point to the tangential direction of the roller. Pointing to the plate processor, some technical data also refer to this plate loading device as "plate carrier".

The fixed head clamp and swinging plate carrier are the characteristics of this structure. On the one hand, this combination of structures adds redundant actions to the movement of the plates, and on the other hand, it complicates the structure. Because there are various transmission, detection and alignment devices on the carrier, it is far more complicated than the first clamp.

Contents of the invention

The present invention proposes a new structure, the core of which is the movable (slidable) first clamp relative to the roller, and the fixed plate loading device (plate supporting device). This structural combination simplifies the structure on the one hand, because the first clip is not complicated at this time, it is basically the same as the tail clip, and the fixed plate loading device is far simpler than the swinging plate carrier, on the other hand, it leads to A simple plate movement process is established. When the plate is lowered, the plate can be directly pointed from the roller to the direction of the line, and there is no need to swing and reverse the movement through the plate holder.

The specific technical solutions are:

A transmission structure for the upper and lower plates of a direct plate-making machine, which includes a first clamp, a tail clamp, a first clamp manipulator, a tail clamp manipulator, a first clamp sensor, a tail clamp sensor, a roller, a plate loader, a first pressure roller and a tail pressure roller,

There is a T-shaped groove on the surface of the roller, which slides and sleeves the first clip and the tail clip,

There are also positioning pins on the surface of the roller,

The angular positions of the first clamping manipulator and the tail clamping manipulator relative to the center of the drum are fixed,

The first clip manipulator is press-fitted with the first clip,

The manipulator of the tail clip is press-fitted with the tail clip,

The first clamp manipulator and the tail clamp manipulator are generally long along the axis of the drum,

The first clamp sensor cooperates with the first clamp manipulator, the tail clamp sensor cooperates with the tail clamp manipulator,

The plate loading device is a fixed structure with a transmission mechanism, a detection mechanism and a positioning mechanism on it,

The first pressure roller and the last pressure roller can swing around a common center of rotation, and the first pressure roller and the last pressure roller cooperate with a drum.

The number of T-shaped grooves of the drum is equal to that of the first clamp and the tail clamp, and the number of the first clamp sensor and the tail clamp sensor is one-to-one corresponding to the first clamp and the tail clamp. They are arranged in rows in position.

It also includes a plate lowering device, which is a fixed structure with a transmission mechanism, a detection mechanism and a positive positioning mechanism on it.

The first clamp sensor checks the alignment of the first clamp and the angular position of the first clamp, and provides positioning parameters for the first clamp manipulator to capture the first clamp; the tail clamp sensor checks the formation of the tail clamp. The alignment and the angular position of the tail clip provide positioning parameters for the tail clip manipulator to capture the tail clip.

The head clip and the tail clip have the same structure, and there are more than one head clip and the tail clip.

There are two positioning pins.

A plate-loading method of the upper and lower plate transmission structure of a direct plate-making machine, which comprises the following steps:

A. The first clamp sensor sends position parameters to the first clamp manipulator, and the first clamp manipulator captures the first clamp to position it at the initial position of the upper plate, and the initial position of the upper plate is based on the positioning pin; At this time, the first pressure roller is in the pre-compression position, and the tail pressure roller is in the lifting and guiding position; the printing plate is fed from the plate loading device to the positioning pin;

B. The first pressure roller is pressed down, and the printing plate is tightly attached to the cylinder; the first clamp manipulator is pressed down, and the first clamp is opened;

C. The roller rotates counterclockwise to send the printing plate into the first clamp;

D. The manipulator of the first clamp is lifted, and the first clamp clamps the printing plate on the cylinder;

E. The drum rotates clockwise to roll the printing plate on the drum;

F. The tail clamp sensor sends position parameters to the tail clamp manipulator, and the tail clamp manipulator captures the tail clamp to position it at the initial position of the upper plate, and the initial position of the upper plate is based on the positioning pin; At this time, the tail pressure roller is in the pre-compression position, and the first pressure roller is in the lifting and guiding position; the tail of the printing plate is pressed to the positioning pin by the tail pressure roller;

G. The tail head pressure roller is pressed down, and the printing plate is pressed against the cylinder; the tail clamp manipulator is pressed down, and the tail clamp is opened; the cylinder rotates clockwise to send the printing plate into the tail clamp; The manipulator of the tail clamp is lifted, and the tail clamp clamps the printing plate on the cylinder, and the plate loading process is completed.

A method for lowering the plate in the direction of the lower plate device of the upper and lower plate transmission structure of the direct plate-making machine, which comprises the following steps:

H1. The first pressure roller is pressed down, the first clamp sensor sends position parameters to the first clamp manipulator, the first clamp manipulator captures the first clamp and presses down, and the first clamp opens to loosen the printing plate first open;

I1. The cylinder rotates clockwise to withdraw the printing plate from the first clamp; the first clamp manipulator lifts up, releases the first clamp, the tail pressure roller is pressed down, and then the first pressure roller is lifted, The printing plate is lifted up due to tension and points to the direction of the lower plate of the connection;

J1. The drum rotates counterclockwise to send out the printing plate, the tail clip sensor sends position parameters to the tail clip manipulator, the tail clip manipulator catches the tail clip and presses it down, and the tail clip opens to The tail of the printing plate is released, and the process of unloading the plate is over.

A method for lowering the plate in the direction of the upper plate device of the upper and lower plate transmission structure of the direct plate-making machine, which comprises the following steps:

H2. The tail pressure roller is pressed down, the tail clamp sensor sends position parameters to the tail clamp manipulator, the tail clamp manipulator catches the tail clamp and presses down, and the tail clamp opens to release the tail of the printing plate ;

I2. The cylinder rotates counterclockwise to withdraw the printing plate from the tail clip; the tail clip manipulator is lifted to release the tail clip, the first pressure roller is pressed down, and then the tail pressure roller is lifted, Due to the tension, the printing plate is lifted and points to the direction of connecting the upper plate to the lower plate;

J2. The cylinder rotates clockwise to send out the printing plate, the first clamp sensor sends position parameters to the first clamp manipulator, the first clamp manipulator captures the first clamp and presses down, and the first clamp opens to The printing plate head is released, and the process of unloading the plate ends.

Description of drawings

Fig. 1 is a schematic diagram of the upper plate state of the embodiment of the present invention;

Fig. 2 is a schematic diagram of the positioning of the first clamp in the board loading process according to the embodiment of the present invention;

Fig. 3 is a schematic diagram of opening of the first clip during the board loading process according to the embodiment of the present invention;

Fig. 4 is a schematic diagram of sending the printing plate into the first clip during the plate loading process according to the embodiment of the present invention;

Fig. 5 is a schematic diagram of the printing plate rolling to the drum during the plate loading process according to the embodiment of the present invention;

Fig. 6 is a schematic diagram of the state of the lower plate according to the embodiment of the present invention;

Fig. 7 is a schematic diagram of the opening of the first clip in the process of lowering the plate according to the embodiment of the present invention;

Fig. 8 is a schematic diagram of the printing plate withdrawing from the first clip during the process of lowering the plate according to the embodiment of the present invention;

Fig. 9 is a schematic diagram of the printing plate starting to be unloaded during the unloading process of the embodiment of the present invention;

Fig. 10 is a schematic diagram of the printing plate exiting the cylinder during the plate lowering process according to the embodiment of the present invention.

Detailed ways

The present invention is described by examples below, and it should be noted that the examples listed should not be construed as limiting the invention.

Illustrate the structure of this case in conjunction with Fig. 1.

●The head clip 3 and the tail clip 4 can have the same structure. They can slide relative to the surface of the drum 1 . Their positioning and opening and closing are controlled by the manipulators 5 and 6 of the head and tail clips. Due to the long dimension in the axial direction of the drum, there are generally more than one head and tail clips, for example, 4-8;

●There are T-shaped grooves 2 on the surface of the drum 1, the number of which is equal to that of the head and tail clips, and they are sliding guide grooves for the head and tail clips. There are also positioning pins 14 on the surface of the cylinder 1, generally 2, used for precise positioning of the printing plate 13 when the plate is loaded;

● The angular positions of the first clamping manipulator 5 and the tail clamping manipulator 6 relative to the center of the drum are fixed. When they are pressed down, the head and tail clips can be opened and caught. In this state, the head and tail clips can slide relative to the drum, and the positioning of the head and tail clips relative to the drum can be realized by cooperating with the rotation of the drum. Manipulator 5,6 is generally long along the drum axis direction.

●A head clamp sensor 7 and a tail clamp sensor 8 are installed adjacent to the head and tail clamp manipulators 5 and 6 . There is a one-to-one correspondence between the number of the head and tail clip sensors and the head and tail clips, and they are arranged in rows in terms of position. The head and tail clip sensors are used to check the alignment of the head and tail clips and the angular position of the head and tail clips, and provide positioning parameters for the head and tail clip manipulators to capture the head and tail clips.

●The first pressure roller 9 and the tail pressure roller 10 can swing independently or coordinately around the common center of rotation. On the one hand, they can provide directional guidance for the upper and lower plates, and on the other hand, they can press the plates tightly on the surface of the drum.

●Both the upper board device 11 and the lower board device 12 are fixed structures, and there are corresponding transmission, detection and alignment mechanisms on them.

Figure 1 is the board state. Referring to Figures 1 to 5, the boarding process is explained.

●Firstly, with the assistance of the sensor 7, the manipulator 5 captures the first clamp 3 and positions it at the initial position of the upper plate (based on the positioning pin 14); Lift up the guide position; the printing plate 13 is fed from the plate loader to the positioning pin 14; see Figure 2;

●The first pressure roller 9 is pressed down, and the plate is close to the roller; the manipulator 5 is pressed down, and the first clamp 3 is opened; see Figure 3;

●Cylinder 1 rotates counterclockwise to send the printing plate into the first clamp 3; see Figure 4;

●The manipulator 5 is raised, and the first clamp 3 clamps the printing plate on the cylinder; see Figure 5;

●Drum 1 rotates clockwise to roll the printing plate on the drum;

●According to the similar action procedure, under the combined action of the tail clamp manipulator 6, the tail clamp sensor 8 and the roller, the tail clamp 4 presses the tail end of the printing plate onto the roller, and the board loading process ends.

Figure 6 is the lower board state. Referring to FIG. 6 to FIG. 10 , the board lowering process is explained.

The first pressure roller 9 is pressed down, and the manipulator 5 catches the first clamp 3 with the help of the sensor 7 and presses it down. The first clamp 3 opens to release the printing plate first; see Figure 7;

●Drum 1 rotates clockwise to withdraw the printing plate from the first clamp 3; see Figure 8;

●Lift the manipulator 5, release the first clamp 3, press down the tail pressure roller 10, then lift the first pressure roller 9, and lift the printing plate 13 due to the tension to point to the direction of the lower plate of the connection; see Figure 9;

●Cylinder 1 rotates counterclockwise to send out printing plate 13; see Figure 10;

Sometimes, such as in the state of manually lowering the board, it is required to lower the board to the upper side. Since the head and tail clip structures listed in the present invention are left-right symmetric, it is not difficult to understand that as long as the above-mentioned lower plate action is used as a mirror image.

Apparently, the above content is only to illustrate the characteristics of the present invention, but not to limit the present invention. Changes made by persons of ordinary skill in the relevant technical field in the corresponding technical field according to the present invention shall belong to the protection scope of the present invention.

Claims (9)

1. direct platemaking machine upper and lower plates drive mechanism is characterized in that: it comprises first folder, tail folder, first clamping manipulator, tail clamping manipulator, firstly presss from both sides sensor, tail presss from both sides sensor, cylinder, plate-assembling device, first pressure roller and tail pressure roller,

Described cylinder surface has T type groove, described first folder of its slip socket and described tail folder,

Described cylinder surface also has alignment pin,

Described first clamping manipulator and described tail clamping manipulator are fixed with respect to the position, angle of described centre of the drum,

Described first clamping manipulator and the interference fit down of described first folder,

Described tail clamping manipulator and the interference fit down of described tail folder,

Described first clamping manipulator and described tail clamping manipulator are elongated along the cylinder axis direction,

Described first folder sensor cooperates with described first clamping manipulator, and described tail folder sensor cooperates with described tail clamping manipulator,

Described plate-assembling device is a fixed structure, and connecting gear, testing agency and normotopia mechanism are arranged on it,

Described first pressure roller and described tail pressure roller can be around public centre of gyration swings, and described first pressure roller and described tail pressure roller cooperate with cylinder.

2. a kind of direct platemaking machine upper and lower plates drive mechanism according to claim 1, its feature also is: the T type groove quantity of described cylinder equates with described first folder and described tail folder, described first folder sensor, described tail press from both sides sensor and described first folder, described tail is clipped in quantitatively is one to one, is in a row separately on the position.

3. a kind of direct platemaking machine upper and lower plates drive mechanism according to claim 1, its feature also is: it also comprises the lower plate device, described lower plate device is a fixed structure, and connecting gear, testing agency and normotopia mechanism are arranged on it.

4. a kind of direct platemaking machine upper and lower plates drive mechanism according to claim 1, its feature also is: the property in a row of the described first folder of described first folder sensor check and the position, angle of described first folder, and catch described first folder for described first clamping manipulator positional parameter is provided; Described tail folder sensor is checked the property in a row of described tail folder and the position, angle of described tail folder, catches described tail folder for described tail clamping manipulator positional parameter is provided.

5. a kind of direct platemaking machine upper and lower plates drive mechanism according to claim 1, its feature also is: described first folder is identical with described tail clamping structure, and described first folder and described tail folder are all more than one.

6. a kind of direct platemaking machine upper and lower plates drive mechanism according to claim 1, its feature also is: described alignment pin is two.

7. the upper plate method as the arbitrary described direct platemaking machine upper and lower plates drive mechanism of claim 1-6 is characterised in that it comprises the steps:

A. described first folder sensor sends location parameter to described first clamping manipulator, and described first clamping manipulator is caught described first folder makes it be positioned first folder upper plate initial bit, and described first folder upper plate initial bit is a benchmark with described alignment pin; Described first pressure roller was in and compressed the position in advance this moment, and described tail pressure roller is in and lifts guiding position; Printing forme is fed to described alignment pin from described plate-assembling device;

B. described first pressure roller is depressed, and printing forme is adjacent to described cylinder; Described first clamping manipulator is depressed, and described first folder opens;

C. described cylinder rotates counterclockwise sends printing forme into described first folder;

D. described first clamping manipulator lifts, and described first folder is clamped in printing forme on the described cylinder;

E. described cylinder clockwise rotates, and printing forme is twisted on the described cylinder;

F. described tail folder sensor sends location parameter to described tail clamping manipulator, and described tail clamping manipulator is caught described tail folder makes it be positioned tail folder upper plate initial bit, and described tail folder upper plate initial bit is a benchmark with described alignment pin; Described tail pressure roller was in and compressed the position in advance this moment, and described first pressure roller is in and lifts guiding position; The printing forme afterbody is depressed into described alignment pin by described tail pressure roller;

G. described tail pressure roller is depressed, and printing forme is adjacent to described cylinder; Described tail clamping manipulator is depressed, and described tail folder opens; Described cylinder clockwise rotates sends printing forme into described tail folder; Described tail clamping manipulator lifts, and described tail folder is clamped in printing forme on the described cylinder, and the upper plate process finishes.

8. the lower plate method as the arbitrary described direct platemaking machine upper and lower plates drive mechanism of claim 1-6 is characterised in that it comprises the steps:

H1. described first pressure roller is depressed, and described first folder sensor sends location parameter to described first clamping manipulator, and described first clamping manipulator is caught described first folder and depressed, and described first folder opens printing forme head is unclamped;

I1. described cylinder clockwise rotates, and printing forme is withdrawed from from described first folder; Described first clamping manipulator lifts, and discharges described first folder, and described tail pressure roller is depressed, and follows described first pressure roller and lifts, and printing forme points to line lower plate direction because tension force lifts;

J1. described cylinder rotates counterclockwise, and printing forme is sent, and described tail folder sensor sends location parameter to described tail clamping manipulator, and described tail clamping manipulator is caught described tail folder and depressed, and described tail folder opens the printing forme tail is unclamped, and the lower plate process finishes.

9. the lower plate method as the arbitrary described direct platemaking machine upper and lower plates drive mechanism of claim 1-6 is characterised in that it comprises the steps:

H2. described tail pressure roller is depressed, and described tail folder sensor sends location parameter to described tail clamping manipulator, and described tail clamping manipulator is caught described tail folder and depressed, and described tail folder opens the printing forme tail is unclamped;

I2. described cylinder rotates counterclockwise, and printing forme is withdrawed from from described tail folder; Described tail clamping manipulator lifts, and discharges described tail folder, and described first pressure roller is depressed, and follows described tail pressure roller and lifts, and printing forme points to line upper plate direction lower plate because tension force lifts;

J2. described cylinder clockwise rotates, and printing forme is sent, and described first folder sensor sends location parameter to described first clamping manipulator, and described first clamping manipulator is caught described first folder and depressed, and described first folder opens printing forme head is unclamped, and the lower plate process finishes.

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