JP2003095485A - Sheet material positioning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a sheet material positioning device allowing improvement of positioning accuracy. SOLUTION: When a printing plate is positioned by an exposure part 18 in an automatic exposure device 10 of the printing plate, a carrying roller 24 is rotated to carry the printing plate on a plate feeding guide 20 to the substantial front and the printing plate is butted against a positioning pin 52 on a right side and is rotated, and thereby the printing plate is butted against also the positioning pin 52 on a left side to fix the position of the printing plate in one direction. By carrying the printing plate in a right direction by component force in the right direction of carrying force of the carrying roller 24, the printing plate is butted against a reference pin 36 to fix the position of the printing plate in the right direction. Since the printing plate is rotated to be butted against the pair of positioning pins 52 and to be butted against a reference pin 36 by component force in the right direction of carrying force of the carrying roller 24, the printing plate can be surely butted against the pair of positioning pins 52 and the reference pin 36 to improve positioning accuracy of the printing plate.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sheet material positioning device for positioning a sheet material placed on a flat plate.

[0002]

2. Description of the Related Art As a printing plate exposing device, an image is directly recorded on a photosensitive layer (for example, emulsion surface) on a support of a sheet-shaped printing plate (for example, so-called photopolyplate or thermal plate) by a laser beam or the like ( What is exposed is being developed.

In this printing plate exposing device, a printing plate placed on a flat plate is conveyed to a punch section as necessary, so that the punch section punches the printing plate (punching hole punching process). To execute. Further, the printing plate placed on the plate is conveyed to the exposure unit, so that the exposure unit performs the exposure process on the printing plate.

Before the punching process in the punching unit and the exposure process in the exposing unit, in order to improve the accuracy of the punching process and the exposing process, the printing plate is restrained or pressurized while being held on the plate. Need to be positioned. Here, when the printing plate is constrained or held under pressure in this manner, a parameter that can be constrained or held under pressure so as to prevent buckling deformation of the printing plate is experimentally obtained in advance and based on this parameter. The printing plate was restrained or held under pressure.

As a method of positioning the printing plate while restraining or pressurizing it while it is placed on the plate, for example, two first plates are provided on one side of the plate (for example, the punch section side or the exposure section side). One reference pin is provided, and the printing plate is pressed by the first moving pin until the printing plate hits the two first reference pins, and the position in one direction of the printing plate is determined. Furthermore, the other direction of the plate (direction perpendicular to one direction)
One second reference pin is provided on the side, and the printing plate is pressed by the second moving pin until the printing plate hits the second reference pin to determine the position in the other direction of the printing plate.

However, in such a printing plate exposing apparatus, the printing plate is constrained or pressurized by experimentally obtaining a parameter in which buckling deformation of the printing plate is less likely to occur in advance, as described above. Force or holding force (eg pressing force of the printing plate by the first moving pin and the second moving pin)
Is small and the positioning accuracy is unstable (for example, the first
The printing plate does not hit the reference pin or the second reference pin). On the other hand, if the restraint force or the pressurizing force holding force of the printing plate with respect to the plate is increased, buckling deformation of the printing plate occurs, and the positioning accuracy is deteriorated.

Moreover, when two printing plate moving mechanisms are required, such as when the plate is provided with the first moving pin and the second moving pin, there is a problem that the plate becomes expensive and becomes large in size.

[0008]

SUMMARY OF THE INVENTION In consideration of the above facts, an object of the present invention is to obtain a sheet material positioning device capable of improving the positioning accuracy of the sheet material.

[0009]

A sheet material positioning device according to claim 1 is provided so as to correspond to a flat plate on which the sheet material is placed and the sheet material placed on the plate. A conveying unit that conveys the sheet material in a predetermined direction, and the sheet material that is provided on the predetermined direction side of the plate and that is conveyed in the predetermined direction abuts at one point to rotate the sheet material, A first abutting member that determines a position in one direction of the sheet material by abutting the rotated sheet material at at least two points, and a conveying force in the other direction perpendicular to the one direction is applied to the sheet material. The conveying force applying means and the other side of the plate are provided,
A second abutting member that determines a position in the other direction of the sheet material by abutting the sheet material to which a conveying force in the other direction is applied.

In the sheet material positioning device according to the first aspect of the invention, the conveying means conveys the sheet material on the plate in a predetermined direction, and the sheet material abuts on the first abutting member at one point and is rotated. Thus, the sheet material hits the first abutting member at at least two points, and the position in one direction of the sheet material is determined. Further, the sheet feeding force is applied to the sheet material in the other direction, and the sheet material strikes the second abutting member to determine the position of the sheet material in the other direction. As a result, the sheet material is positioned in the state of being placed on the plate, and this positioning state can be held by the conveying force of the sheet material by the conveying means and the conveying force applying means.

Here, as described above, the sheet material is rotated to abut against the first abutting member at at least two points, and the sheet material is abutted against the second abutting member by the conveying force imparting means. The sheet material can be reliably brought into contact with the first abutting member at at least two points, and the sheet material can be reliably brought into contact with the second abutting member. This can improve the positioning accuracy of the sheet material.

A sheet material positioning apparatus according to a second aspect is the sheet material positioning apparatus according to the first aspect,
The carrying means is characterized in that the carrying speed of the sheet material is lowered before the sheet material hits the first abutting member.

In the sheet material positioning device according to the second aspect of the present invention, since the conveying means lowers the conveying speed of the sheet material before the sheet material hits the first abutting member, the sheet material moves to the first position.
It is possible to suppress the separation from the first abutting member due to the recoil of the abutting member. Thereby, the sheet material can be more reliably abutted against the first abutting member at at least two points, and the positioning accuracy of the sheet material can be further improved.

A sheet material positioning device according to a third aspect is the sheet material positioning device according to the first or second aspect, wherein the sheet material positioning device is provided on the opposite side of the plate,
The moving member presses the sheet material to convey it in the other direction, and when the sheet material hits the second abutting member receives a pressure equal to or higher than a predetermined pressure, the feeding member separates from the sheet material. It is equipped with the feature.

In the sheet material positioning device according to the third aspect of the present invention, the sheet material is pressed and conveyed in the other direction by the movement of the conveying member. Therefore, the sheet material can be reliably conveyed in the other direction. Moreover, when the conveying member receives a pressure equal to or higher than the predetermined pressure from the sheet material that has abutted against the second abutting member, the conveying member separates from the sheet material, so that the conveying member does not restrain the sheet material. Thereby, the buckling deformation of the sheet material can be prevented and the positioning accuracy can be further improved.

[0016]

FIG. 2 is a side view showing a printing plate automatic exposure apparatus 10 according to an embodiment to which the sheet material positioning apparatus of the present invention is applied.

Automatic printing plate exposure apparatus 1 according to the present embodiment
0 is for exposing (recording) an image on the image forming layer (photosensitive layer, emulsion surface) on the support of the printing plate 12 such as a photopoly plate or a thermal plate as a sheet material. The printing plate automatic exposure apparatus 10 includes a conveyance guide unit 1
4, the punch unit 16 and the exposure unit 18 are provided, and the punch unit 16 and the exposure unit 1 are provided in front of the transport guide unit 14.
8 is arranged and the exposure unit 1 is provided below the punch unit 16.
8 are arranged.

The transport guide unit 14 has a plate feeding guide 20 in the shape of a substantially rectangular flat plate as a plate, and a plate discharge guide 22 in the shape of a substantially rectangular flat plate.
And the plate discharge guide 22 have a lateral V-shape relative to each other. The transport guide unit 14 is structured to rotate around a center of FIG. 2 by a predetermined angle, and by this rotation, the plate feeding guide 20 and the plate discharging guide 22 are selectively moved to the punch section 16 and the exposing section 18. Can be adapted.

As shown in FIG. 1, a transport roller 24 as a transport means is rotatably provided at the front side portion of the plate feed guide 20, and the transport roller 24 is a cylindrical roller portion made of silicon rubber. A plurality of 24A are arranged on the rotation center shaft 24B to form a skewer. The transport roller 24 projects above the plate feed guide 20, and the transport roller 2
4 is driven to rotate, whereby the printing plate 12 placed on the plate supply guide 20 is given a conveying force (arrow C in FIG. 4) in a direction perpendicular to the rotation center axis 24B of the conveying roller 24. It is conveyed substantially forward (predetermined direction). In addition, the transport roller 24
The rotation center shaft 24B is inclined so that the right end portion is arranged rearward with respect to the left end portion as a conveying force imparting means. As a result, the conveyance force of the conveyance roller 24 is in the right direction (the other direction).
By the component force (arrow D in FIG. 4) to the printing plate 12, a conveying force in the right direction is applied to the printing plate 12.

A trapezoidal columnar rib 26 is provided on the plate feed guide 20.
Are provided in a predetermined number, the ribs 26 are arranged parallel to the front-rear direction, and the projecting height of the ribs 26 on the plate feed guide 20 is slightly lower than that of the transport roller 24. further,
A cylindrical rotation roller 28 is rotatably provided on the plate feed guide 20 by a predetermined number of rotations, and the rotation roller 28 is arranged parallel to the left-right direction (the rotation center axis 2 of the transport roller 24).
4B), and the height of protrusion above the plate feed guide 20 is substantially the same as that of the transport roller 24.
Here, the support of the printing plate 12 on the ribs 26 and the printing plate 1
By the rotation of the rotary roller 28 associated with the conveyance of 2, the frictional force when the printing plate 12 is conveyed is reduced.

At the front end of the plate feed guide 20, a pair of positioning pins 30 as a first abutting member are provided in parallel with each other in the left-right direction, and each positioning pin 30 has a columnar shape and is centered on the central axis. The plate feed guide 2
It projects to the upper surface of 0. When the printing plate 12 is transported substantially forward by the transport roller 24 as described above, the front end of the printing plate 12 abuts at least one of the pair of positioning pins 30. Further, the pair of positioning pins 30 can be moved down from the upper surface of the plate feeding guide 20, whereby the printing plate 12 is conveyed by the transport roller 24.
It is possible to convey the sheet substantially forward beyond the front end of 0.

A slit hole 32 is formed in the right side portion of the plate feed guide 20 in the vicinity of the rear side of the transport roller 24. The slit hole 32 is arranged parallel to the left and right direction, and a support shaft 34 penetrates inside. Has been done. A cylindrical reference pin 36 serving as a second abutting member is provided on the support shaft 34.
Are rotatably supported about a support shaft 34. The support shaft 34 is moved along the slit holes 32, and the reference pin 36 is moved in the left-right direction. The printing plate 12 is placed at a predetermined position according to the size of the printing plate 12.

A slit hole 38 is formed on the left side of the plate feed guide 20 in the vicinity of the rear side of the transport roller 24. The slit hole 38 is arranged rearward of the slit hole 32 and parallel to the left-right direction. The support shaft 40 penetrates inside. On the upper part of the support shaft 40, a cylindrical transport pin 42 as a transport member is supported rotatably around the support shaft 40. Here, when the front end of the printing plate 12 hits at least one of the pair of positioning pins 30, the support shaft 40 is moved to the right along the slit hole 38 and the transport pin 42 is moved, as shown in FIG. By being moved, the transport pin 42 presses the printing plate 12 and transports it to the right, and abuts the reference pin 36. Further, the transport pin 42
Continues to move even after the printing plate 12 hits the reference pin 36 and presses the printing plate 12 to the right,
Incline. At this time, the printing plate 12 is kept in contact with the positioning pin 30 and the reference pin 36 on the right side by the carrying force of the carrying roller 24 and the component of the carrying force to the right.

Further, the transport pin 42 is always separated from the printing plate 12 when the printing plate 12 receives a pressure higher than a predetermined pressure while the printing plate 12 is tilted. Therefore, as shown in FIG. 4, the printing plate 12 is rotated while the printing plate 12 is kept in contact with the positioning pin 30 and the reference pin 36 on the right side, and as shown in FIG. It hits the positioning pin 30 of. As a result, the positions of the printing plate 12 in the front-back direction (one direction) and the right direction are determined, and the printing plate 12 is provisionally positioned. Further, the transport roller 24 is configured to be continuously rotated after the printing plate 12 is positioned (including temporary positioning and main positioning described below), whereby the transport force of the transport roller 24 and this transport The positioning state of the printing plate 12 is maintained by the component of the force to the right. Even when the support shaft 40 is configured to be movable while the predetermined elastic force is applied to the reference pin 36 side, buckling deformation of the printing plate 12 due to the pressing force of the transport pin 42 is prevented. Good.

Further, before the printing plate 12 is rotated and abuts on the left positioning pin 30 (including before it abuts on the left positioning pin 48 or the left positioning pin 52 below), the printing plate 12 is conveyed by the transport roller 24. The transport speed (rotational speed of the transport roller 24) is reduced.

The punch section 16 is provided with a flat plate-shaped support plate 44, and a predetermined number of punch devices 46 are supported on the support plate 44 (a total of four punch units, one pair on the left and right in this embodiment). . Here, the conveyance guide unit 14 is rotated, the plate feed guide 20 is made to correspond to the punch section 16 (opposed to the punch device 46), and the pair of positioning pins 30 are lowered from the upper surface of the plate feed guide 20, Punching device 46
The front end of the printing plate 12 is conveyed from the plate supply guide 20 by the conveying roller 24.

Positioning pins 48 as first abutting members are provided between each pair of punching devices 46, and the pair of positioning pins 48 are arranged in parallel in the left-right direction and are circular. It has a columnar shape and is rotatable about the central axis. The front end of the printing plate 12 conveyed into the punch device 46 abuts at least one of the pair of positioning pins 48. At this time, in the same manner as described above,
The printing plate 12 in which the transport pin 42 is moved and tilted is rotated while maintaining the state of abutting the reference pin 36 and the right positioning pin 48, and the left positioning pin 4 is moved.
Hit the 8. Thereby, in the punch unit 16,
The positions of the printing plate 12 in the front-rear direction and the right direction are determined, and the printing plate 12 is finally positioned. The left-right center line of the printing plate 12 that has been finally positioned in this manner coincides with the left-right center line of the right pair of punch devices 46 and the left pair of punch devices 46.

A predetermined number of punch holes (not shown) such as circular holes and long holes are punched by the punching device 46 at the front end portion of the printing plate 12 which has been finally positioned in this way. The predetermined number of punch holes serve as a reference for winding the printing plate 12 around the plate cylinder of a rotary press of a printing device (not shown), which will be described later. When the processing in the punch device 46 is completed,
The printing plate 12 is returned to the plate feeding guide 20 by the reverse rotation of the transport roller 24, and the pair of positioning pins 30 are projected from the upper surface of the plate feeding guide 20 to temporarily position the printing plate 12 again in the same manner as above. .

The exposure unit 18 is provided with a cylindrical rotary drum 50. The rotary drum 50 is arranged in parallel in the left-right direction and is rotatable in the directions of arrows A and B in FIG. Here, when the printing plate 12 returned from the punch section 16 onto the plate supply guide 20 as described above is provisionally positioned,
The transport guide unit 14 is rotated so that the plate feed guide 20 corresponds to the exposure section 18 (opposed in the tangential direction of the rotary drum 50), and the pair of positioning pins 30 serve as the plate feed guide 20.
By being lowered from the upper surface, the front end of the printing plate 12 is transported onto the peripheral surface of the rotary drum 50 by the transport rollers 24.

A pair of positioning pins 52 as a first abutting member are provided on the peripheral surface of the rotary drum 50. The pair of positioning pins 52 are arranged in parallel in the left-right direction and have a cylindrical shape. It is said that it is rotatable about the central axis. The printing plate 1 conveyed on the peripheral surface of the rotary drum 50 is provided on at least one of the pair of positioning pins 52.
The front end of 2 abuts, and at this time, similarly to the above, the printing plate 12 in which the transport pin 42 is moved and inclined is rotated while maintaining the state of abutting the reference pin 36 and the right positioning pin 52. The left positioning pin 52
Hit against. As a result, in the exposure unit 18, the positions of the printing plate 12 in the front-back direction and the right direction are determined, and the printing plate 12 is finally positioned.

As shown in FIG. 2, a plate-shaped front end chuck 54 is provided on the peripheral surface of the rotary drum 50 in the vicinity of the pair of positioning pins 52. A substantially central portion of the front end chuck 54 in the front-rear direction is rotatably supported by the rotary drum 50, and an elastic force is applied to the front side of the front end chuck 54 in a direction away from the peripheral surface of the rotary drum 50.

A mounting cam 56 is provided above the front end chuck 54.
The mounting cam 56 presses the front side of the front end chuck 54, so that the rear side of the front end chuck 54 is separated from the peripheral surface of the rotary drum 50. As a result, the front end of the printing plate 12 conveyed from the plate feed guide 20 onto the peripheral surface of the rotary drum 50 as described above is inserted between the rear side of the front end chuck 54 and the peripheral surface of the rotary drum 50. The main positioning of the printing plate 12 is performed. In addition, the printing plate 12
After the main positioning of the front end chuck 54 is completed, the mounting cam 56 is rotated to release the pressing force on the front side of the front end chuck 54, so that the rear side of the front end chuck 54 presses the front end of the printing plate 12 by the elastic force to rotate the rotary drum. The front edge of the printing plate 12 is held on the 50th circumferential surface. Further, the printing plate 12 is provided on the peripheral surface of the rotary drum 50.
When the front end of the rotary drum 50 is held, the rotary drum 50 moves toward the arrow A in FIG.
And the printing plate 12 is wound around the peripheral surface of the rotary drum 50.

A squeeze roller 58 is disposed near the peripheral surface of the rotary drum 50 on the side of the mounting cam 56 in the direction of arrow A in FIG. When the squeeze roller 58 is moved to the rotary drum 50 side, the squeeze roller 58 is rotated while pressing the printing plate 12 wound around the rotary drum 50 toward the rotary drum 50, and the printing plate 12 is brought into close contact with the peripheral surface of the rotary drum 50. Let

A rear end chuck attaching / detaching unit 60 is arranged near the peripheral surface of the rotary drum 50 between the mounting cam 56 and the squeeze roller 58. The rear end chuck attaching / detaching unit 60 has a shaft 62, and the shaft 62 is movable toward the rotary drum 50.
A trailing end chuck 64 is attached to the tip of the shaft 62. When the trailing end of the printing plate 12 wound around the rotating drum 50 faces the trailing end chuck attaching / detaching unit 60, the shaft 62 moves the trailing end chuck 64 to the rotating drum 50. The trailing end chuck 64 is detached from the shaft 62 at the same time as it is moved to the side and mounted at a predetermined position on the rotary drum 50. As a result, the trailing edge chuck 64 presses the trailing edge of the printing plate 12,
The rear end of the printing plate 12 is held on the peripheral surface of the rotary drum 50.

As described above, when the front end and the rear end of the printing plate 12 are held on the rotating drum 50 by the front end chuck 54 and the rear end chuck 64, the squeeze roller 58 is separated from the rotating drum 50 and then the rotating drum 50. Is rotated at a high speed at a predetermined rotation speed.

A recording head portion 66 is arranged near the peripheral surface of the rotary drum 50, and the recording head portion 66 is directed toward the rotary drum 50 which is rotated at a high speed.
The light beam modulated based on the read image data is emitted in synchronization with the rotation of the printing plate 12,
Are exposed based on the image data. This exposure process
This is so-called scanning exposure, in which the recording head unit 66 is moved in the axial direction of the rotating drum 50 (sub scanning) while the rotating drum 50 is rotated at high speed (main scanning).

When the scanning exposure of the printing plate 12 is completed, the rotary drum 50 is temporarily stopped at the position where the rear end chuck 64 faces the shaft 62, and the shaft 62 removes the rear end chuck 64 from the rotary drum 50. (The rear end chuck 64 is attached to the shaft 62), and the pressing of the rear end of the printing plate 12 by the rear end chuck 64 is released. Further, the transport guide unit 14 is rotated so that the plate discharge guide 22 corresponds to the exposure unit 18 (the rotary drum 50).
(Opposite to the tangential direction of), the rotary drum 50 is rotated in the direction of arrow B in FIG. 2 to eject the printing plate 12 from the rear end side to the plate ejection guide 22. At this time, the mounting cam 5
By rotating 6 to press the front side of the front end chuck 54, the pressing of the front end of the printing plate 12 by the rear side of the front end chuck 54 is released. When the printing plate 12 is sent to the plate ejection guide 22, the transport guide unit 14 is rotated to eject the printing plate 12 from the plate ejection guide 22.
The printing plate 12 is conveyed to a developing device or a printing device (not shown) in the next step adjacent to the printing plate automatic exposure device 10.

Next, the operation of this embodiment will be described.

First, the printing plate 12 is placed on the plate feed guide 20. At this time, so-called manual feeding may be used, or feeding may be performed by an automatic sheet feeding device or the like.

The printing plate 12 on the plate feed guide 20 is placed in a state in which the placement position and the inclination with respect to the plate feed guide 20 are relatively rough. It is conveyed forward and the front end of the printing plate 12 is abutted against at least one of the pair of positioning pins 30. At this time, after the printing plate 12 is tilted by the transport pin 42, the printing plate 12 is rotated while being kept in contact with the reference pin 36 and the positioning pin 30 on the right side, and is projected to the positioning pin 30 on the left side. By applying, the printing plate 12 is provisionally positioned.

In this temporary positioning state, when the transport guide unit 14 is rotated to make the plate feed guide 20 correspond to the punch section 16 and the pair of positioning pins 30 is lowered from the upper surface of the plate feed guide 20, the transport roller 24 is moved. The printing plate 12 is conveyed substantially forward by and the front end of the printing plate 12 is abutted against at least one of the pair of positioning pins 48 of the punch section 16. At this time, the printing plate 12 is
After tilting, the printing plate 12 is rotated while abutting against the reference pin 36 and the positioning pin 48 on the right side and abutted on the positioning pin 48 on the left side, whereby the printing plate 12 is punched in the punch section 16. Is book-positioned. After a predetermined number of punch holes are punched by the punching device 46 at the front end of the printing plate 12 that has been finally positioned in this way, the printing plate 12 is rotated reversely by the transport roller 24 and the plate feeding guide 20 is rotated.
While being returned to the upper position, the pair of positioning pins 30 are projected from the upper surface of the plate feed guide 20, and the printing plate 12 is temporarily positioned again in the same manner as above.

Further, in this temporary positioning state, the transport guide unit 14 is rotated so that the plate feed guide 20 is exposed.
No. 8 and the pair of positioning pins 30 are lowered from the upper surface of the plate feeding guide 20, the printing plate 12 is transported substantially forward by the transport roller 24 and the front end of the printing plate 12 is paired with the pair of positioning pins of the rotary drum 50. Butt at least one of 52. At this time, after the printing plate 12 is tilted by the transport pin 42, the printing plate 12 is rotated while being kept in contact with the reference pin 36 and the positioning pin 52 on the right side to be projected on the positioning pin 52 on the left side. By applying, the printing plate 12 is finally positioned in the exposure unit 18. The printing plate 12 that has been finally positioned in this way has a front end chuck 54 and a rear end chuck 64 at the front end and the rear end, respectively.
It is held on the peripheral surface of the rotary drum 50 by means of and and is wound around the peripheral surface of the rotary drum 50 while being in close contact with the peripheral surface of the rotary drum 50 by the squeeze roller 58. After that, the rotary drum 50 is rotated at a high speed, and the recording head unit 66 performs the exposure process.

When the exposure process is completed, the conveyance guide unit 14 is rotated to make the plate discharge guide 22 correspond to the rotary drum 50, and the front end chuck 54 and the rear end chuck 64 move the printing plate 12 to the peripheral surface of the rotary drum 50. While releasing the holding, the printing plate 12 is discharged from the rotary drum 50 to the plate discharge guide 22. Then, the conveyance guide unit 14 is rotated to convey the printing plate 12 from the plate ejection guide 22 to the developing device or the printing device.

Here, when the printing plate 12 is provisionally positioned and when the punching unit 16 and the exposure unit 18 are actually positioned, the transport roller 24 rotates to move the printing plate 12 in a direction perpendicular to the rotation center axis 24B. Is applied to the printing plate 12 to convey the printing plate 12 on the plate feed guide 20 substantially forward by a substantially static friction force, and the printing plate 12 strikes the positioning pins 30, 48, 52 on the right side and rotates. As the printing plate 12 is moved, the positioning pins 30, 48,
The position of the printing plate 12 in one direction is also determined by hitting 52.

Further, the rotation center shaft 24 of the conveying roller 24
Since B is inclined with respect to the right direction, the transport roller 24
By the component force of the conveying force of the right direction to the right (dynamic frictional force due to the rotation of the conveying roller 24), the right conveying force is applied to the printing plate 12 and the printing plate 12 abuts the reference pin 36. , The position of the printing plate 12 in the right direction is determined. As a result, the printing plate 12 can be positioned while being placed on the plate feed guide 20, and the transport roller 24
The positioning state of the printing plate 12 can be maintained by the carrying force of the printing plate and the component force of the carrying force in the right direction.

Further, since the transport pin 42 moves to press the printing plate 12 to transport it to the right, the printing plate 12 can be reliably transported to the right and at the same time, the printing plate 1 can be transported.
2 can be surely inclined with respect to the front-back direction.

Here, the printing plate 12 is rotated to abut against the pair of positioning pins 30, 48 and 52 as described above, and the printing plate 12 is used as a reference by the component force of the carrying force of the carrying roller 24 to the right. Since it abuts against the pin 36, the printing plate 12 can be abutted against the pair of positioning pins 30, 48, 52 and the reference pin 36 without fail. This allows
The positioning accuracy of the printing plate 12 can be improved.

Further, the transport speed of the printing plate 12 (rotational speed of the transport roller 24) is lowered before the printing plate 12 hits the left positioning pins 30, 48, 52, so that the printing plate 12 is moved as shown in FIG. Left positioning pins 30, 4
It is possible to prevent the printing plate 12 from being separated from the positioning pins 30, 48, 52 on the right side due to the recoil of the bumps 8, 52. As a result, the printing plate 12 is attached to the pair of positioning pins 3
I can hit 0, 48, 52 more reliably,
The positioning accuracy of the printing plate 12 can be further improved. Even in the case where the printing plate 12 is separated from the positioning pins 30, 48, 52 on the right side as shown in FIG.
Positioning can be performed by a method such as abutting against 0, 48, 52 and the reference pin 36.

Furthermore, even if the printing plate 12 is abutted against the reference pin 36 and the pair of positioning pins 30, 48, 52 by the carrying force of the carrying roller 24, the printing plate 12 is not constrained. Moreover, when the printing plate 12 abutting the reference pin 36 receives a pressure equal to or higher than a predetermined pressure, the transport pin 42 is separated from the printing plate 12, so that the transport pin 42 does not restrain the printing plate 12. As a result, when the printing plate 12 is positioned, the printing plate 12 is not constrained, buckling deformation of the printing plate 12 is prevented, and the positioning accuracy can be further improved.

In this embodiment, the transport pin 4
2 (including the support shaft 40 and the slit hole 38) may be omitted. Even in this case, the printing plate 12 is supplied to the plate feeding guide 20 in a state of being inclined with respect to the front-rear direction, or the pair of positioning pins 30, 48, 52 is arranged in the left-right direction (axial direction of the rotating drum). By adopting a configuration in which the printing plates 12 are not arranged in parallel, the printing plate 12 conveyed by the conveying force of the conveying rollers 24 is used as a pair of positioning pins 3.
It can be rotated by abutting against any one of 0, 48 and 52, and the conveying force of the conveying roller 24 to the right (the other direction) is applied to the printing plate 12 to the right. The printing plate 12 can be applied and abutted against the reference pin 36. Moreover, the printing plate transport mechanism uses the transport roller 24.
Therefore, cost reduction and space saving can be achieved.

Further, in the present embodiment, when the printing plate 12 is temporarily positioned by the plate supply guide 20, the transport pin 42 is used.
May be configured not to move. Even in this case, when the printing plate 12 is fully positioned in the punching unit 16 and the exposure unit 18, the printing plate 12 can be brought into contact with the reference pin 36 and tilted by the movement of the transport pin 42. The printing plate 12 is provided with a pair of positioning pins 4
8, 52 and the reference pin 36 can be reliably abutted.

Further, in the present embodiment, the rotation center shaft 24B of the skewer-shaped transport roller 24 is inclined with respect to the right direction. However, the transport roller may have a truncated cone shape or a skewered shape as a whole. A configuration in which the peripheral surface of the transport roller is inclined may be formed by making each roller portion of the transport roller into a truncated cone shape. Even in this case, the dynamic frictional force due to the rotation of the carrying roller (right direction (other direction) caused by the inclination of the circumferential surface of the carrying roller)
To the printing plate (sheet material) to the right. Further, the transport roller may be formed into a columnar shape as a whole, and a spiral transport spiral may be provided on the peripheral surface thereof so that the transport roller is a so-called spiral roller. Even in this case, the dynamic frictional force due to the rotation of the transport roller (the transport force in the right direction (the other direction) generated by the rotation of the transport spiral) can impart the right transport force to the printing plate (sheet material). .

Further, in the present embodiment, the pair of positioning pins 30, 48, 52 are used as the first abutting member, but a flat plate-shaped positioning plate is used as the first abutting member. Good.

[0054]

In the sheet material positioning device according to the first aspect of the present invention, the sheet material is rotated to abut against the first abutting member at at least two points, and the sheet force is applied to the first abutting member. Since it abuts against the two abutting members, the positioning accuracy of the sheet material can be improved.

In the sheet material positioning device according to the second aspect of the invention, since the conveying means reduces the conveying speed of the sheet material before the sheet material hits the first abutting member, the sheet material moves to the first position.
The positioning accuracy of the sheet material can be further improved by suppressing separation from the first abutting member due to the reaction that hits the abutting member.

In the sheet material positioning device according to the third aspect, the conveying member presses the sheet material and conveys it in the other direction, so that the sheet material can be reliably conveyed in the other direction. Moreover, since the conveying member separates from the sheet material when the conveying member receives a pressure equal to or higher than a predetermined pressure from the sheet material abutting against the second abutting member, the conveying member does not restrain the sheet material and positioning accuracy is improved. It can be further improved.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing an automatic printing plate exposure apparatus according to an embodiment of the present invention.

FIG. 2 is a schematic side view showing an automatic printing plate exposure apparatus according to an embodiment of the present invention.

FIG. 3 is a plan view showing a state in which a printing plate is tilted by a transport pin in the printing plate automatic exposure apparatus according to the embodiment of the present invention.

FIG. 4 is a plan view showing a state in which the printing plate is rotated while being abutted on the right positioning pin in the printing plate automatic exposure apparatus according to the embodiment of the present invention.

FIG. 5 is a plan view showing a state in which the printing plate is positioned in the printing plate automatic exposure apparatus according to the embodiment of the present invention.

FIG. 6 is a plan view showing a state in which the printing plate automatic exposing apparatus according to the embodiment of the present invention is separated from the right positioning pin by the reaction of the printing plate hitting the left positioning pin.

[Explanation of symbols]

10 Automatic printing plate exposure device 12 Printing plate (sheet material) 20 Plate feeding guide (plate) 24 Conveying rollers (conveying means) 30 Positioning pin (first abutting member) 36 Reference pin (second abutting member) 42 Transport pin (transport member) 48 Positioning pin (first abutting member) 52 Positioning pin (first abutting member)

─────────────────────────────────────────────────── ─── Continued Front Page (51) Int.Cl. ⁷ Identification Code FI Theme Coat (Reference) B65H 5/06 B65H 5/06 J 9/16 9/16 G03F 7/20 511 G03F 7/20 511 9 / 00 9/00 G // B41C 1/00 B41C 1/00 B41F 27/00 B41F 27/00 A F term (reference) 2H084 AA30 AE03 BB13 CC05 2H097 DB11 KA35 LA01 3F049 AA02 AA03 DB02 EA10 EA14 LA06 LB12 AB05 BA102A02 BA09 DA02 DA05 EA01 FA01 FA03 FA04

Claims (3)

[Claims] 1. A flat plate-shaped plate on which a sheet material is placed, a transport means provided corresponding to the sheet material loaded on the plate, and transporting the sheet material in a predetermined direction, and the plate. Of the sheet material, which is provided on the predetermined direction side and is conveyed in the predetermined direction, abuts on the sheet material at one point, and at the same time, the rotated sheet material abuts on at least two points. A first abutting member that determines a position in one direction of the sheet material, a conveyance force applying unit that applies a conveyance force to the sheet material in the other direction perpendicular to the one direction, and the other direction side of the plate, A sheet material positioning device, comprising: a second abutting member that determines a position in the other direction of the sheet material by abutting the sheet material to which a conveying force in the other direction is applied. 2. The sheet material positioning device according to claim 1, wherein the conveying means reduces a conveying speed of the sheet material before the sheet material hits the first abutting member. 3. The plate is provided on the opposite side of the plate,
The moving member presses the sheet material to convey it in the other direction, and when the sheet material hits the second abutting member receives a pressure equal to or higher than a predetermined pressure, the feeding member separates from the sheet material. The sheet material positioning device according to claim 1 or 2, further comprising: