JPH0742260U - Internal cylinder scanning device - Google Patents

Abstract

(57) [Summary] [Purpose] To enable punching work and punch residue collection work according to the positional relationship of holes used in the subsequent process. [Structure] The punching portion 2 has a motor 7, an eccentric cam 6, a punch 4 and a die 5, and the die 5 is formed with a die hole 11 and a connecting hole 12 in which a female screw 13 is processed. .
The punch residue receiving portion 3 has a T-shaped space 18, a male screw 17 is machined in the receiving opening 16, a mesh 23 is provided in the end portion 19, and the hose 2 connected to the suction device.
4 is connected to the end 20. The punch residue receiving portion 3 is connected to the punching portion 2 in the connecting hole 12 to assemble the punch unit 1. Since a plurality of mounting portions are formed on the end surface of the inner drum of the cylinder in accordance with the specifications of the printing machine, the punch unit 1 is mounted to an appropriate mounting portion in correspondence with the subsequent process. As a result, it is possible to easily realize the punching work and the suction of the punch residue according to the arrangement relationship of the holes determined by the relationship with the subsequent process.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a cylindrical inner surface scanning device used in the fields of printing, plate making, etc., and particularly relates to a punching technique and a technique for collecting punch residue generated at that time.

[0002]

[Prior art]

 As is known, the cylindrical inner surface scanning device includes a cylindrical inner surface drum, a photosensitive material (film, plate material, etc.) mounted on the inner surface of the drum, a scanning head that moves in the sub-scanning direction along the central axis of the drum, An apparatus having a deflector for main scanning, which is arranged in a scanning head and rotates around the central axis, a lens for image formation, and the like, wherein a light beam modulated by an image signal is passed through the lens. The light is deflected by a deflector to scan and expose the photosensitive material in the main scanning direction. Then, the exposed photosensitive material is used as a printing plate in a printing machine in a subsequent step. A more detailed structure of such a cylinder inner surface scanning device is disclosed in, for example, Japanese Patent Publication No. 62-19724, Japanese Patent Application Laid-Open No. 5-27190, Japanese Patent Application Laid-Open No. 5-5846, and the like. .

On the other hand, on the printing machine side, a so-called pin system is used for mounting a printing plate. Therefore, it is necessary to form the holes for the pins on the printing machine side in the printing plate in advance before printing. In other words, on the cylinder inner surface scanning device side, after forming a halftone dot image on the photosensitive material, it is necessary to subsequently make holes at predetermined positions on the photosensitive material corresponding to the pin positions and pin intervals of the printing machine. . And, as a matter of course, along with the punching work, a work of collecting punch residue generated at that time is also required.

The following techniques are known as a technique in which the punching work and the punch residue collecting work are put into practical use in a cylindrical inner surface scanning device. That is, a groove is formed along the circumferential direction on the inner surface of the cylindrical inner surface drum, and a plurality of punch units are fitted into this groove. Here, the punch unit is driven from the upper side (non-mounting surface (exposure surface) side of the photosensitive material) toward the lower side (mounting surface side of the photosensitive material), thereby punching the photosensitive material and forming a hole. It is a device. Further, a through hole is provided in a part of the bottom surface of the groove, and a hose is fitted in this through hole. Further, the hose is connected to a vacuum pump provided outside. Therefore, the groove is connected to the vacuum pump. A seal is attached to the groove other than the part where the punch unit is fitted to prevent air leakage. As a result, when the punch unit is driven to open a hole, the punch residue falls into the groove and, at the same time, the punch residue is discharged from the groove to the outside of the cylindrical inner surface drum by driving the vacuum pump. As described above, in the prior art, the groove formed on the inner surface of the cylindrical inner surface drum serves not only as a supporting portion for the punch unit but also as a receiving portion for punch residue.

A punching device disclosed in Japanese Utility Model Publication No. 60-24560 is known as a so-called flat type punching system, although it is not used in the cylindrical inner surface scanning device. In this conventional technique, the workbench to which the sensitive material is attached is a flat plate, and in particular, from the viewpoint of facilitating the work on the workbench, the punch unit is disposed inside the lower part of the flat plate and The structure is such that the sensitive material is punched out upward. The punch residue receiver is provided on the flat plate, and the pipe is disposed inside the lower portion of the flat plate from the discharge opening of the punch residue receiver. With such a structure, the portion projecting onto the flat plate is minimized to facilitate the work other than the drilling work (see the second column, page 11, line 11 to line 17 and line 17 of the same publication). (See Figure 1).

[0006]

[Problems to be solved by the device]

 However, all of the above-mentioned conventional techniques have the following problems. That is, as the pin interval on the printing machine side, various values are actually set depending on the model of the printing machine. Therefore, it is necessary to change the mounting pitch of the punch unit (corresponding to the pin interval) each time according to the specifications of the printing machine used in the subsequent process. For that purpose, it must be possible to freely change the mounting position of the punch unit.

However, in the above-mentioned conventional technique, the mounting pitch of the punch unit can be changed by changing the fitting position of the punch unit with respect to the groove, but on the other hand, such a change of the mounting position is not possible. The problem arises that the work of attaching the seal to the groove must be performed again each time. Particularly, in the cylindrical inner surface scanning device, such a re-mounting operation must be performed in the cylindrical inner surface drum, which is not preferable in terms of workability. Further, it is not preferable in terms of cost to process such a groove itself on the inner surface of the cylindrical inner surface drum because it increases the processing cost of the drum.

On the other hand, in the prior art, since the punch unit and the punch residue receiver are fixed, the mounting pitch of the punch unit cannot be freely changed. Moreover, since all the main parts such as the punch unit and the pipes are installed inside the housing under the flat plate, even if the position of the punch unit could be changed, the operator would have to move the position inside the housing each time. You will have to do variable work. It is clear that such work is impractical. Therefore, it can be said that applying the technical idea developed in the prior art to the cylindrical inner surface scanning device does not solve the problem at all.

The present invention is devised under such a consciousness of the problem, and the purpose thereof is that even if the arrangement relation of the holes is changed due to the relation with the post-process, such a change is caused. An object of the present invention is to provide a cylindrical inner surface scanning device that can easily cope with changes.

[0010]

[Means for Solving the Problems]

 This invention is a cylindrical inner surface scanning device for recording an image by scanning a light beam modulated by an image signal with respect to a sensitive material mounted on the inner surface of a cylindrical inner surface drum. Punch unit that punches the sensitive material from the to the mounting surface side to punch the sensitive material, and a punch residue receiving portion that has a receiving port attached to the punching portion and receives punch residue generated by the punching. The suction device is provided on the axial end face of the cylindrical inner drum corresponding to the arrangement relationship of the holes used in the subsequent process, and the discharge port of the punch residue receiving portion is for sucking the punch residue through the connecting member. It was connected to.

[0011]

[Action]

 When the punching portion punches the sensitive material from the non-mounting surface side to the mounting surface side, the punch residue generated thereby is received by the punch residue receiving portion through the receiving opening. Further, the punch residue received by the punch residue receiving portion is sucked by the suction device and discharged from the discharge port of the punch residue receiving portion. At that time, since the punch unit is provided on the axial end surface of the cylindrical inner surface drum in correspondence with the arrangement relationship of the holes determined by the relationship with the subsequent process, the holes having the arrangement relationship are accurately formed. . When a new hole arrangement relationship is required in relation to the post-process, the punch unit may be provided again on the axial end surface of the cylindrical inner surface drum in accordance with the required arrangement relationship.

[0012]

【Example】

 1A and 1B are configuration diagrams of the punch unit 1, in particular, FIG. 1A is a partial sectional side view thereof, and FIG. 1B is a front view thereof. The punch unit 1 is roughly divided into a punching section 2 and a punch residue receiving section 3. Note that, in FIG. 1, the punching portion 2 and the punch residue receiving portion 3 are illustrated separately for convenience of explanation, but in use, the punching portion 2 and the punch residue receiving portion 3 are integrally connected.

The perforated portion 2 is a device for making a hole 39 in the end portion of the photosensitive material 29 (PS plate [presensitized plate], film, etc.) shown in FIG. 5 (schematic development view) by a press working method (particularly punching). The holes 39 formed by the perforated portion 2 at intervals d are used as pin holes of the printing machine. As the hole 39, a long hole may be used instead of the round hole. The end portion of the sensitive material 29 is a portion 29a protruding outward from the axial end surface 31 of the cylindrical inner surface drum 28, as will be described later with reference to FIG.

Returning to FIG. 1, the punching portion 2 includes a punch 4 and a die 5 for punching out the photosensitive material 29 inserted in the space 14, an eccentric cam 6 for vertically moving the punch 4, and an eccentric cam 6. And a motor 7 for driving the motor. That is, as shown in FIG. 1, the motor 8, the die 5, and the block 9 are attached to the substrate 8. An eccentric cam 6 is connected to the rotary shaft of the motor 7, and a punch 4 is vertically movably inserted in a through hole 10 formed in a block 9. The punch 4 is biased upward by a spring 4a. On the other hand, a die hole 11 is formed in the die 5 so as to face the through hole 10, and a connecting hole 12 connected to the die hole 11 is formed on the opposite surface side of the die 5. A female screw 13 is machined on the inner circumference of the connection hole 12. The connecting hole 12 is for connecting the punch residue receiving portion 3 and the punching portion 2. The space 14 formed between the block 9 and the die 5 is for inserting the photosensitive material 29. A reflection type sensor 32 is arranged above the motor 7, and the sensor 32 detects the deformation disk 32 a rotating in synchronization with the eccentric cam 6 to detect the rise or fall of the punch 4. To do. The detection signal of the sensor 32 is used to control the loading / unloading of the sensitive material 29 to / from the inner surface 30.

On the other hand, the punch residue receiving portion 3 has a T-shaped structure on the front surface as shown in FIG. A male screw 17 is formed on the outer periphery of the tip portion 16 of the hollow protruding portion 15, and the tip portion 16 forms a receiving port for receiving punch residue. Hereinafter, the tip portion 16 will be referred to as the receiving port 16. A hollow space 18 having the same T shape is formed inside the punch residue receiving portion 3, and the space 18 is an opening formed at both ends 19 and 20 of the punch residue receiving portion 3. It is connected to 21 and 22. A mesh 23 is attached to the end portion 19. The mesh 23 is for preventing punch residue from spilling out, and also has a function as an air inlet. A hose 24 as a connecting member is inserted into the opening 22 of the other end 20. Although not shown in FIG. 1, the hose 24 is connected to the suction device 25 (storage case 26 + vacuum pump 27) shown in FIG. Therefore, the opening 22 serves as a punch residue discharge port. Then, the punch residue receiving portion 3 having such a structure is connected to the die 5 through the receiving port 16 and the connecting hole 12. As a result, the receiving port 16 is arranged immediately below the die hole 11.

Next, the mounting of the punch unit 1 shown in FIG. 1 on the cylindrical inner surface drum 28 and its operation will be described. Here, FIG. 2 is a perspective view of the cylindrical inner surface drum 28 shown to clarify the mounting position of the punch unit 1. Moreover, in FIG. 2, the arrangement relationship of the photosensitive material 29 after the photosensitive material 29 is mounted on the inner surface 30 of the cylindrical inner surface drum 28 is illustrated. As shown in FIG. 2, the sensitive material 29 is carried in and mounted on the inner surface 30 so that one end 29a of the sensitive material 29 projects by a predetermined length from one axial end surface 31 of the cylindrical inner surface drum 28. . Then, this projecting portion 29a is inserted into the space 14 of the punch unit 1 described above, and the hole 39 is formed in the projecting portion 29a. The sensitive material 29 is mounted on the inner surface 30 with one side 33 in the longitudinal direction as a reference.

A plurality of mounting portions 34 (screw holes) are formed on the end surface 31 along the circumferential direction thereof. In FIG. 2, 20 mounting portions 34 are formed at an equal pitch. Here, the position and pitch of the mounting portion 34 are set in consideration of the pin interval of various printing machines that are considered to be used in the subsequent process. The mounting portion 34 is for mounting the punch unit 1 on the end surface 31.

FIG. 3 is a side view showing a state where the punch unit 1 shown in FIG. 1 is attached to the end surface 31 of the cylindrical inner drum 28. However, regarding the illustration of the cylindrical inner surface drum 28, a partial cross section thereof is drawn for convenience. The attachment of the punch unit 1 to the end surface 31 is as follows. That is, the substrate 8 of the punch unit 1 is fixed to the bracket 36 by using the bolt 35. Then, the bracket 36 is fixed to the mounting portion 34 corresponding to the positional relationship of the pins of the printing machine used in the subsequent step by using the bolt 37. As a result, the punch unit 1 in which the punching portion 2 and the punch residue receiving portion 3 are connected to each other to form one unit can be attached to the optimum position in the end face 31. Thereafter, as described above, the hose 24 is fitted into the opening 22 of the punch residue receiving portion 3 to connect the punch unit 1 and the suction device 25 (see FIG. 4).

After the above-mentioned mounting work is completed, the photosensitive material 29 is mounted on the inner surface 30 of the cylindrical inner surface drum 28 as shown in FIG. 2, and one end thereof, that is, the above-mentioned protruding portion 29a is on the die 5 of the punch unit 1. It will be in the state of being placed on. Then, when the exposure of the photosensitive material 29 is completed, the punching work is started. That is, when the motor 7 is driven to rotate the eccentric cam 6, the punch 4 resists the urging force of the spring 4a from the upper side (non-attached surface (exposure surface) side of the photosensitive material 29) to the lower side (sensitive material side). 29, and a part of the protruding portion 29a of the photosensitive material 29 is punched out by the cutting force of the punch 4 to form a hole 39. Then, the punch residue generated at that time falls from the connecting hole 12, that is, the receiving port 16 toward the bottom of the T-shaped space 18 in the punch residue receiving portion 3. If it is necessary to form two or more holes, the punch units 1 may be arranged in the mounting portions 34 corresponding to those holes (this point will be described later with reference to FIG. 4). .

When the punching operation is completed, punch dust collecting operation is performed next. That is, when the vacuum pump 27 of the suction device 25 is driven, air flows from the mesh 23 attached to the punch residue receiving portion 3 toward the suction device 25 side, and the punch residue accumulated in the space 18 of the punch residue receiving portion 3 is stored. Are sucked and collected in the storage case 26.

As described above, in this embodiment, the punch unit 1 having two functions of the punching function and the punch residue receiving function at the same time is attached to the end face 31 of the cylindrical inner surface drum 28 in the axial direction as a unit. The drilling work and the collection work can be performed. At that time, the preparation and sticking work of the seal, which are required in the conventional technique, are completely unnecessary. Moreover, since the punch unit 1 is attached to the axial end surface of the cylindrical inner surface drum 28, the mounting operation of the punch unit 1 and the change of its mounting position can always be performed outside the cylindrical inner surface drum 28. In this respect, in comparison with the prior art in which the work inside the cylindrical inner surface drum 28 (attachment of the punch unit to the groove, change of its position, sticking of the seal and its change) is required, this embodiment has a workability. It can be said to be preferable. In addition, even if the positional relationship of the holes 39, which is determined by the relationship with the specifications of the printing machine, is changed, it is possible only by appropriately selecting the mounting position of the punch unit 1. It is possible to surely open the hole 39 at the position.

In the punch unit 1 of this embodiment, since the punch residue receiving portion 3 is connected directly below the die 5, there is an advantage that the size of the die 5 itself can be reduced. This advantage is that the punched portion 2 of the punch unit 1 can be arranged along the circumference of the axial end surface 31 of the cylindrical inner surface drum 28, and the protruding portion of the photosensitive material 29 bent along the circumference of the inner surface 30. This has the advantage that the hole 39 can be surely formed in the hole 29a.

In FIG. 2, a plurality of mounting portions 34 (screw holes) are formed on the end surface 31 to realize a variable mounting position of the punch unit 1. However, instead of this, the end surface Each mounting portion 34 may be formed as an elongated hole formed along the circumferential direction of 31. In this case, it is possible to adjust the mounting position of the punch unit 1 in accordance with the positional relationship of the holes 39 required in the subsequent step by utilizing the degree of freedom of the elongated holes in the circumferential direction.

Further, a rail extending along the circumference of the end surface 31 is provided on the end surface 31 of the cylindrical inner surface drum 28 via a bracket, and the punch unit 1 is connected to this rail to position the punch unit 1. It may be variable.

Although the embodiment described above is a case where one punch unit 1 is used, a plurality of punch units 1 are attached to each attachment portion 34 of the end surface 31 in the axial direction of the cylindrical inner surface drum 28. It is also possible to perform punching work and collecting work. FIG. 4 shows such an example. In FIG. 4, exactly four punch units 1A to 1D are used. Although not shown in FIG. 4, in this case, the punch units 1A to 1D are assumed to be attached to predetermined attachment portions 34. Here, the punch units 1A to 1D are connected in series by sequentially connecting the punch residue receiving portions 3A to 3D by the hose 24. Moreover, a joint 38 is provided between the punch units 1B and 1C, and the punch units 1A to 1D are connected to the suction device 25 via the joint 38. The suction device 25 is a device including a storage case 26 and a vacuum pump 27. In order to ensure the air flow, a mesh 23 is provided at the end 19A of the punch residue receiving portion 3A of the punch unit 1A and the end 20D of the punch residue receiving portion 3D of the punch unit 1D.

With such a configuration, all punch residue accumulated in the punch residue receiving portions 3A to 3D of the punch units 1A to 1D are collected in the storage case 26 at the same time by driving the vacuum pump 27. Moreover, in FIG. 4, since the pipes of the punch units 1A to 1D are connected in series by the shortest distance, punch residue can be efficiently gathered.

Also in this case, when the arrangement relationship of the holes 39 is changed due to the relationship with the post-process, the attachment positions of the punch units 1A to 1D to the end surface 31 are changed as described above. You can respond by doing.

[0028]

[Effect of device]

 This device has the following effects. That is, by simply attaching the punch unit to the axial end surface of the cylindrical inner surface drum, the device necessary for the punching work and the punch residue collecting work can be realized, and the device can be installed outside the cylindrical inner surface drum. In addition, since it is provided along the circumferential direction, the punching work and the punch scrap collecting work can be significantly facilitated as compared with the conventional technique that requires work in the cylindrical inner surface drum. it can. Further, the present invention can eliminate any groove or seal in the drum, which was required in the prior art for sucking punch residue. Moreover, in the present invention, even if the hole interval is changed due to the relationship with the post-process (due to a change in the specifications of the printing machine, etc.), the punch unit is installed in the shaft of the cylindrical inner surface drum in response to such a situation. Since it can be attached to the end face in the direction, it can always be drilled exactly at the desired position.

[Brief description of drawings]

FIG. 1 is a configuration diagram showing an example of a punch unit according to the present invention.

FIG. 2 is a perspective view schematically showing the configuration of a cylindrical inner surface drum.

FIG. 3 is a side view showing a mounting example of a punch unit.

FIG. 4 is an explanatory diagram showing a connected state of each punch unit.

FIG. 5 is an explanatory diagram showing a punching position in a sensitive material.

[Explanation of symbols]

 1, 1A to 1D Punch unit 2 Punching part 3 Punch scrap receiving part 4 Punch 5 Die 6 Eccentric cam 7 Motor 12 Connecting hole 13 Female screw 17 Male screw 23 Mesh 24 Hose 25 Suction device 28 Cylindrical inner surface drum 29 Sensitive material 31 Axial direction End face 34 mounting part

Claims (1)

[Scope of utility model registration request] 1. A cylindrical inner surface scanning device for recording an image by scanning a light beam, which is modulated by an image signal, on a photosensitive material mounted on the inner surface of a cylindrical inner surface drum, wherein the non-mounting surface side of the photosensitive material. Punch unit including a punching portion for punching the sensitive material by punching the sensitive material from the above to the mounting surface side, and a punch residue receiving portion whose receiving port is attached to the punching portion and receives punch residue generated by the punching. Is provided on the axial end surface of the cylindrical inner drum corresponding to the arrangement relationship of the holes used in the subsequent step, and the discharge port of the punch residue receiving portion is a suction for sucking the punch residue through a connecting member. A cylindrical inner surface scanning device characterized by being connected to the device.