JP2013000753A - Machined material fixing jig, laser processing device, and method of manufacturing sleeve printing plate - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a machined material fixing jig capable of preventing the machined material fixing jig from being damaged and allowing to perform highly accurate laser processing even in irradiating a machined material with laser beams for through machining performed through it in a thickness direction, a laser beam machining device equipped with the same and a method of manufacturing a sleeve printing plate.SOLUTION: The machined material fixing jig 10 supports the machined material when performing laser processing on the machined material. The machined material includes a part to be subjected to through machining that it is machined through it in the thickness direction by the laser processing. A recessed part 15 is formed in a support face 11 for supporting the machined material at a position corresponding to the part to be subjected to through machining of the machined material.

Description

  The present invention provides a workpiece fixing jig that supports the workpiece when performing laser processing on the workpiece, a laser processing apparatus provided with the workpiece fixing jig, and this The present invention relates to a method for manufacturing a sleeve printing plate using a workpiece fixing jig.

As a member manufactured by performing laser processing on a material to be processed, for example, as described in Patent Documents 1 and 2, the field of offset printing for cylindrical objects such as flexographic printing, letterpress printing, and cans. And sleeve printing plates used in the above.
In this sleeve printing plate, since the circumferential position of the image pattern is preset on the sleeve support, the image pattern can be registered by aligning the sleeve support and the cylinder. It is possible to greatly reduce the time and labor required for the pattern exchange work.

  In the above-mentioned sleeve printing plate, a positioning notch that opens toward the end in the axial direction is provided in a part of the sleeve support, and the positioning notch is provided with a guide pin erected on the cylinder. By engaging, the relative position in the circumferential direction and the relative position in the axial direction of the sleeve printing plate and the cylinder are determined.

As a manufacturing method of such a sleeve printing plate, for example, a flat plate-like workpiece material is fixed to a workpiece material fixing jig, laser processing is performed on the workpiece material, and a positioning notch and an image pattern are formed. And then welding the end of the workpiece by rolling the workpiece.
Also, a cylindrical workpiece is fixed to a workpiece fixing jig, and laser processing is performed on the workpiece to form a positioning notch and an image pattern, thereby forming a sleeve printing plate. A method to do this has also been proposed.
Here, in order to improve the print quality, it is necessary to form the positioning notch and the image pattern with high accuracy so that their relative positions coincide with each other. Therefore, Patent Document 3 proposes a technique of forming an image pattern and a positioning notch by laser processing in a state where the workpiece is mounted on the same workpiece fixing jig. .
In addition, in order to improve the production efficiency of the sleeve printing plate, a technique for preparing a plurality of sleeves by preparing a long cylindrical workpiece and cutting it by laser processing has been proposed.

JP 2006-326938 A JP 2006-272682 A JP 2010-214943 A

  By the way, when cutting a workpiece material or forming a positioning notch by laser machining, laser machining is performed so as to penetrate in the thickness direction of the workpiece material. Then, the laser beam is applied to the support surface of the workpiece fixing jig that supports the workpiece. As a result, wrinkles or the like are generated on the support surface of the workpiece fixing jig, the workpiece material cannot be sufficiently supported, and the processing accuracy of laser processing may be deteriorated.

  The present invention has been made in view of the above-described circumstances, and even when a material to be processed is irradiated with a laser beam and a penetration process penetrating in the thickness direction is performed, the material to be processed is fixed. The workpiece fixing jig capable of preventing damage to the jig and capable of performing highly accurate laser processing, the laser processing apparatus provided with the workpiece fixing jig, and the sleeve printing plate An object is to provide a manufacturing method.

  In order to solve the above-described problems, the workpiece fixing jig according to the present invention is a workpiece fixing jig that supports the workpiece when performing laser processing on the workpiece. The workpiece material includes a penetration processing scheduled portion that is processed to penetrate in the thickness direction by the laser processing, and a support surface that supports the workpiece material includes a workpiece of the workpiece material. A concave portion is formed at a position corresponding to the through-penetration scheduled portion.

  According to the workpiece fixing jig having this configuration, since the recess is formed in the support surface that supports the workpiece, the laser beam penetrates the workpiece and is used for fixing the workpiece. Even when the support surface of the jig is irradiated, the laser beam is not focused at the position of the recess. Therefore, damage to the workpiece fixing jig due to laser light can be suppressed. Since the recesses are formed in advance, the processing accuracy of laser processing can be improved by disposing the recesses so that the workpiece material can be reliably supported.

Here, it is preferable that the depth of the recess is 1 mm or more.
In this case, since the depth of the recess, that is, the depth from the support surface of the workpiece fixing jig is 1 mm or more, the focal point of the laser beam irradiated to the workpiece fixing jig is Therefore, it is possible to reliably prevent the workpiece fixing jig from being damaged.

Moreover, it is preferable that the width | variety of the said recessed part shall be 1 mm or more.
In this case, it becomes larger than the spot diameter of the laser beam, and the laser beam is reliably irradiated toward the inside of the recess, so that the workpiece fixing jig can be reliably prevented from being damaged.

Furthermore, it is preferable that the inner surface of the recess is set to have a surface roughness that is greater than that of the support surface.
When the laser beam is irradiated onto the support surface, the reflected light of the laser beam is irradiated toward the laser beam irradiation unit, and the laser beam irradiation unit may be damaged. Therefore, by setting the surface roughness of the inner surface of the concave portion to be rougher than that of the support surface, the laser light irradiated into the concave portion is irregularly reflected, and damage to the laser light irradiation portion due to the reflected light of the laser light can be suppressed. .

The recess is preferably a V-shaped groove.
In this case, even if the laser beam is irradiated toward the concave portion, the laser beam is reflected on the inclined surface of the V-shaped groove, so that the reflected light of the laser beam is not irradiated toward the laser beam irradiation unit. Damage to the light irradiation part can be suppressed.

A laser processing apparatus according to the present invention includes the above-described workpiece fixing jig, and a laser beam irradiation unit that irradiates a workpiece with a laser beam on the workpiece fixed to the workpiece fixing jig. It is characterized by having.
According to the laser processing apparatus having this configuration, it is possible to prevent damage to the workpiece fixing jig, to reliably support the workpiece, and to perform highly accurate laser processing.

The method for producing a sleeve printing plate of the present invention is a method for producing a sleeve printing plate that is used by being mounted on a cylinder of a printing apparatus, wherein the workpiece material is irradiated with laser light, and the meat of the workpiece material is obtained. A penetrating process for performing a process penetrating in the thickness direction. In the penetrating process, the workpiece material is supported by the workpiece fixing jig described above, and the workpiece material is penetrated. The concave portion is arranged at a position corresponding to the planned portion.
According to the method for manufacturing a sleeve printing plate of the present invention, damage due to laser light is suppressed in the workpiece fixing jig that supports the workpiece, so that the workpiece can be reliably supported. Therefore, an image pattern, a positioning notch, and the like can be formed with high accuracy, and a high-quality sleeve printing plate can be provided.

  According to the present invention, it is possible to prevent the workpiece fixing jig from being damaged even when the workpiece is irradiated with laser light and the penetration processing penetrating in the thickness direction is performed. It is possible to provide a workpiece fixing jig capable of performing high laser processing, a laser processing apparatus provided with the workpiece fixing jig, and a method for manufacturing a sleeve printing plate.

It is a perspective view of the sleeve printing plate manufactured by the laser processing apparatus which is embodiment of this invention. It is the figure which looked at the sleeve printing plate of FIG. 1 from the axial direction. FIG. 3 is a schematic view of a sleeve element (workpiece material) mounted on a sleeve element support cylinder (workpiece material fixing jig) according to the present embodiment. It is the schematic of the laser processing apparatus which is this embodiment. 1 is a schematic diagram of a sleeve body support cylinder (a workpiece fixing jig) according to a first embodiment of the present invention. FIG. 6 is a cross-sectional view of a recess provided in a sleeve element support cylinder (workpiece material fixing jig) shown in FIG. 5. It is explanatory drawing which shows the sleeve element | base_body (material to be processed) processed with the laser processing apparatus which is this embodiment, 1st image data, and 2nd image data. FIG. 7 is an explanatory view showing a state in which the sleeve element mounted on the sleeve element support cylinder (workpiece material fixing jig) shown in FIGS. 5 and 6 is laser processed. It is the schematic of the sleeve element | base_body support cylinder (jig for workpiece raw material fixation) which is 2nd embodiment of this invention. FIG. 10 is a cross-sectional view of a recess provided in a sleeve element support cylinder (workpiece material fixing jig) shown in FIG. 9. It is explanatory drawing which shows the state which laser-processes the sleeve element | base_body (material to be processed) with which the sleeve element | base_body support cylinder (workpiece raw material fixing jig | tool) shown in FIG.9 and FIG.10 was mounted | worn. It is the schematic of the jig | tool for workpiece raw material fixation which is 3rd embodiment of this invention. It is the schematic of the laser processing apparatus provided with the jig | tool for to-be-processed material fixing shown in FIG. It is the schematic of the manufacturing method of the sleeve printing plate using the laser processing apparatus shown in FIG.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
First, FIG. 1 and FIG. 2 are shown about the sleeve printing plate 30 manufactured with the laser processing apparatus 50 provided with the sleeve element | base_body support cylinder (working material fixation jig | tool) 10 which is 1st embodiment of this invention. It explains using.
As shown in FIGS. 1 and 2, the sleeve printing plate 30 includes a cylindrical sleeve body 31 extending along the axis O, and a plate material 32 disposed on the outer peripheral side of the sleeve body 31. ing.

  The sleeve body 31 is made of polyethylene terephthalate (PET) resin, the outer diameter D is 100 mm ≦ D ≦ 300 mm, the length O in the axis O direction is 50 mm ≦ L ≦ 600 mm, and the outer diameter D and the axis O direction. The ratio L / D with the length L is set to 0.2 ≦ L / D ≦ 2. Furthermore, the thickness t of the sleeve body 31 is set to 0.1 mm ≦ t ≦ 1.0 mm. In the present embodiment, the length of the sleeve body 31 in the axis O direction is 200 mm.

The plate material 32 is made of, for example, a photosensitive resin that can be engraved with a laser beam, and has a cylindrical shape with a thickness of 0.5 mm to 1.0 mm. A relief plate 33 having an image pattern is engraved on the outer peripheral surface of the plate member 32.
Then, the end of the sleeve printing plate in the direction of the axis O is engaged with a guide pin erected on the cylinder of the printing apparatus to guide the circumferential relative position with respect to the cylinder and the relative position in the axis O direction. A notch 34 is formed.

Next, the sleeve element body 40 attached to the sleeve element body support cylinder 10 according to the present embodiment will be described with reference to FIG.
The sleeve body 40 has a cylindrical shape, and the length L0 in the axis O direction is 50 mm ≦ L0 ≦ 3000 mm. In this embodiment, L0 = 1000 mm. That is, five sleeve printing plates 30 are manufactured from one sleeve body 40.
The sleeve body 40 is formed with a scheduled cutting portion 41 and a positioning cutout portion 34 to be cut as a scheduled through portion to be processed to penetrate in the thickness direction by laser processing. The notch part formation scheduled part 42 is provided.
In the present embodiment, the sleeve body 40 has a structure in which a photosensitive resin that can be engraved with laser light is laminated on the outer peripheral surface of a polyethylene terephthalate (PET) resin.

  Next, a laser processing apparatus 50 including the sleeve element support cylinder 10 according to the present embodiment will be described with reference to FIG.

As shown in FIG. 4, the laser processing apparatus 50 according to the present embodiment includes a sleeve element supporting cylinder 10 according to the present embodiment and a shaft support portion 52 that rotatably supports the sleeve element supporting cylinder 10. Laser beam for irradiating laser light to the body support 53, the rotation drive unit 55 for rotating the sleeve base support cylinder 10 about the axis N, and the sleeve base 40 mounted on the sleeve base support cylinder 10 Irradiation unit 60, linear motion unit 65 for moving laser beam irradiation unit 60 in a direction parallel to axis N of sleeve body support cylinder 10, these sleeve body support cylinder 10, linear motion unit 65, and laser light irradiation And a control unit 70 that controls the operation of the unit 60.
The sleeve element support portion 53 is provided with a rotation direction position sensor 54 for obtaining the rotation position information θ of the sleeve element support cylinder 10.

The linear motion portion 65 includes a guide bar 66 extending in a direction parallel to the axis N of the sleeve element support cylinder 10, a support member 67 moving along the guide bar 66, and positional information (axis line of the support member 67. And an axial direction position sensor 68 for obtaining N-direction position information Z).
The laser beam irradiation unit 60 is supported by the support member 67 of the linear motion unit 65 and is configured to be movable in a direction parallel to the axis N. Further, the laser beam irradiation unit 60 is provided with an output adjuster 61 that adjusts the output of the laser beam. In the present embodiment, the laser beam irradiation unit 60 is constituted by a carbon dioxide laser.

The control unit 70 includes storage means 71 for storing first image data 46 indicating the position and shape of the notch for positioning, cutting position and shape, and second image data 47 indicating the position and shape of the image pattern of the relief plate 33; Based on the first image data 46, the energy density of the laser beam when forming the cut and positioning notch, and the energy density of the laser beam when forming the image pattern of the relief plate 33 based on the second image data 47, And an energy density adjusting unit 72 for adjusting each of the above.
Based on the first image data 46 and the second image data 47, the operations of the sleeve element support cylinder 10, the linear motion part 65, and the laser beam irradiation part 60 are controlled, and the sleeve element 40 is cut and positioned. The portion 34 and the relief plate 33 are formed.

  As shown in FIG. 5, the sleeve element support cylinder 10 according to the present embodiment has a main body 12 and a shaft 13, and the outer peripheral surface of the main body 12 is the inner side of the sleeve element 40. The support surface 11 supports the peripheral surface. In the support surface 11, a recessed portion 15 that is retreated inward in the radial direction is formed at a position corresponding to the cutting processing scheduled portion 41 and the notched portion forming scheduled portion 42 of the sleeve body 40 described above.

In the present embodiment, as shown in FIG. 6, the recess 15 has a V-shaped cross section.
The depth Z of the recess 15 is 1 mm or more. In order to secure the rigidity of the sleeve element support cylinder 10, the depth Z of the recess 15 is preferably set to ¼ or less of the outer diameter d of the sleeve element support cylinder 10.
Furthermore, the width W of the recess 15 is set to 1 mm or more. In order to securely support the sleeve body 40, the width W of the recess 15 is preferably 20 mm or less.

  Further, the sleeve element support cylinder 10 has an outer diameter slightly larger than the inner diameter of the sleeve element body 40 shown in FIG. The support surface 11 is pressed strongly and fixed. Further, the sleeve element support cylinder 10 is provided with an air ejection mechanism (not shown) for ejecting air from an air hole (not shown) opened in the support surface 11.

Next, a method for manufacturing a sleeve printing plate using the laser processing apparatus 50 according to the present embodiment having such a configuration will be described.
First, the sleeve body 40 shown in FIG. 4 is mounted on the support surface 11 of the sleeve body support cylinder 10. At this time, one end of the sleeve body 40 is fitted into the sleeve body support cylinder 10, and in this state, air is ejected from the air hole by the air ejection mechanism. Then, the diameter of the sleeve element body 40 is expanded by the air, and the sleeve element body 40 is attached to the sleeve element body support cylinder 10. At this time, the axis O of the sleeve body 40 and the axis N of the sleeve body support cylinder 10 coincide.

Next, as shown in FIG. 7, the first image data 46 indicating the positioning notch forming position and shape and the cutting position and shape, the second image data 47 indicating the position and shape of the image pattern of the relief plate 33, Is stored in the storage means 71. That is, the first image data 46 represents the cutting processing scheduled portion 41 and the notched portion forming scheduled portion 42 of the sleeve body 40.
Then, the control unit 70 controls the operations of the sleeve body support cylinder 10, the linear motion unit 65, and the laser beam irradiation unit 60 based on the first image data 46 and the second image data 47.

  While irradiating the laser beam from the laser beam irradiation unit 60 toward the sleeve body 40, the sleeve body support cylinder 10 is rotated by the rotation drive unit 55 and moved in the axis N direction by the linear motion unit 65. The entire outer peripheral surface of the element body 40 is scanned by the laser light irradiation unit 60.

Here, at a location corresponding to the first image data 46, a command signal is transmitted from the energy density adjusting unit 72 to the output adjuster 61 to set the output of the laser beam high, and the entire thickness of the sleeve body 40 is removed. Will be. As a result, the sleeve body 40 is cut and the positioning notch 34 is formed.
On the other hand, at a location corresponding to the second image data 47, a command signal is transmitted from the energy density adjusting unit 72 to the output adjuster 61 so that the output of the laser beam is set low, and a part of the thickness of the sleeve body 40 is reduced. Will be removed. As a result, an image pattern of the relief plate 33 is formed on the sleeve body 40.

  In this way, the energy density of the laser light is adjusted by adjusting the output of the laser light, and the entire outer peripheral surface of the sleeve element 40 is scanned once by the laser light irradiation unit 60, thereby Cutting, formation of the positioning notches 34 and formation of the image pattern of the relief plate 33 are performed, and five sleeve printing plates 30 are produced from one sleeve element body 40.

  Here, when the sleeve element 40 is cut and the positioning notch 34 is formed, as shown in FIG. 6, after the entire thickness of the sleeve element 40 is removed, the laser beam is applied to the sleeve element support cylinder. The 10 support surfaces 11 are irradiated. In the present embodiment, since the concave portion 15 is formed on the support surface 11 so as to recede inward in the radial direction, the laser light is irradiated to the concave portion 15.

  The sleeve element support cylinder 10 according to the present embodiment configured as described above, the laser processing apparatus 50 including the sleeve element support cylinder 10, and the manufacture of the sleeve printing plate using the laser processing apparatus 50 According to the method, in the support surface 11 of the sleeve base body support cylinder 10, the recess recessed backward inward in the radial direction at a position corresponding to the cutting processing scheduled portion 41 and the notch forming planned portion 42 of the sleeve base body 40. Since 15 is formed, as shown in FIG. 6, after removing the entire thickness of the sleeve body 40, the laser beam is irradiated to the recess 15. Since the focus of the laser beam is deviated in the recess 15, there is no possibility that the sleeve element support cylinder 10 is damaged by the laser beam.

  Further, since the concave portion 15 has a V-shaped cross section, the laser light irradiated in the concave portion 15 is reflected by the V-shaped slope, so that the laser light is directed toward the laser light irradiation portion 60 side. No reflected light is irradiated. Therefore, damage to the laser beam irradiation unit 60 due to the reflected light of the laser beam can be suppressed.

Furthermore, in this embodiment, since the depth Z of the recess 15 is set to 1 mm or more, the laser beam irradiated into the recess 15 is not reliably focused, and the sleeve element support cylinder 10 is reliably damaged. Can be prevented.
Further, since the width W of the recess 15 is set to 1 mm or more, the recess 15 becomes larger than the spot diameter of the laser beam, and the laser beam is surely irradiated toward the inside of the recess 15, so that the sleeve element Damage to the body support cylinder 10 can be reliably prevented.

  In addition, according to the method for manufacturing a sleeve printing plate according to the present embodiment, as described above, damage due to laser light is suppressed in the sleeve element support cylinder 10 that supports the sleeve element 40. Can be reliably supported. Therefore, the relief plate 33 having the image pattern and the positioning notch 34 can be formed with high accuracy, and the high-quality sleeve printing plate 30 can be provided.

  Next, a sleeve element support cylinder (workpiece fixing jig) 110 according to a second embodiment of the present invention will be described with reference to FIGS.

  As shown in FIG. 9, the sleeve element support cylinder 110 includes a main body 112 and a shaft 113, and the outer peripheral surface of the main body 112 supports the inner peripheral surface of the sleeve element 40. The surface 111 is used. The support surface 111 is formed with a concave portion 115 that is recessed inward in the radial direction at a position corresponding to the above-mentioned cutting processing scheduled portion 41 and notched portion forming scheduled portion 42 of the sleeve body 40.

In the present embodiment, the recess 115 has a U-shaped cross section. Further, the inner surface of the recess 115 is set to have a rougher surface roughness than the support surface 111. Specifically, the surface roughness of the support surface 111 is in the range of Ra ≦ 1 μm, and the surface roughness of the inner surface of the recess 115 is in the range of Ra ≧ 20 μm.
The depth Z of the recess 115 is 1 mm or more and 1/4 or less of the outer diameter d of the sleeve body support cylinder 110.
Furthermore, the width W of the recess 115 is set to 1 mm or more and 20 mm or less.

According to the sleeve element body support cylinder 110 according to the present embodiment having such a configuration, the inner surface of the recess 115 is set to have a surface roughness that is rougher than that of the support surface 111, so that the laser beam is emitted from the recess 115. Even if it is a case where it irradiates inside, the reflection to the laser beam irradiation part 60 will be suppressed because a laser beam diffusely reflects, and damage to the laser beam irradiation part 60 can be suppressed.
In particular, in this embodiment, since the surface roughness of the inner surface of the recess 115 is set within the range of Ra ≧ 20 μm, it is possible to reliably suppress the reflection of the laser beam.

Next, a workpiece fixing jig 210 according to a third embodiment of the present invention will be described with reference to FIGS.
As shown in FIG. 12, the workpiece fixing jig 210 fixes a plate element 240 having a flat plate shape.
As shown in FIG. 14, the plate element 240 has a cutting processing scheduled portion 241 to be cut and positioning notches as a through processing scheduled portion processed to penetrate in the thickness direction by laser processing. A notch portion formation scheduled portion 242 in which the portion 234 is formed is provided.

The workpiece fixing jig 210 has a substantially flat plate shape, and includes a support surface 211 that supports the back surface of the plate element 240. A concave groove 215 is formed on the support surface 211 at a position corresponding to the cutting processing scheduled portion 241 and the notched portion forming scheduled portion 242.
The depth of the concave groove 215 is 1 mm or more. In order to secure the rigidity of the workpiece fixing jig 210, the depth of the concave groove 215 is preferably ¼ or less of the thickness of the workpiece fixing jig 210. Furthermore, the width of the concave groove 215 is set to 1 mm or more. In order to securely support the plate element 240, the width of the groove 215 is preferably 20 mm or less.
Further, the inner surface of the concave groove 215 is set to have a surface roughness that is larger than that of the support surface 211.

Next, the laser processing apparatus 250 provided with the workpiece fixing jig 210 will be described with reference to FIG.
The laser processing apparatus 250 includes a workpiece fixing jig 210 according to the present embodiment, a driving unit 251 that drives the workpiece fixing jig 210, and a drive control unit 252 that controls the operation of the driving unit 251. And a laser beam generator 263 including a laser beam irradiation unit 260 for irradiating the plate element 240 fixed to the workpiece fixing jig 210 with a laser beam, a laser beam oscillator 261 and an output controller 262. And a laser processing control unit 265 for controlling the laser processing conditions.

Next, a method for manufacturing the sleeve printing plate 230 using the laser processing apparatus 250 will be described.
In the laser processing apparatus 250, the workpiece fixing jig 210 is moved by the driving means 251, and the laser beam is irradiated from the laser beam irradiation unit 260 toward the plate body 240 to perform laser processing. Here, laser engraving and penetration processing are selectively performed by adjusting the output of the laser according to a command from the laser processing control unit 265.

  First, the plate element 240 is fixed to the support surface 211 of the workpiece fixing jig 210 shown in FIG. At this time, the cutting processing scheduled portion 241 and the notched portion forming scheduled portion 242 are positioned on the concave groove 215.

Laser engraving is performed by the laser beam irradiation unit 260 to form the relief plate 233, and the positioning notch 234 is formed and cut. Thereby, as shown in FIG. 14, the flat plate material 245 is produced.
Then, the flat plate material 245 is rounded and the end portion is laser welded or ultrasonic welded to produce a cylindrical sleeve printing plate 230.

  The workpiece fixing jig 210 according to the present embodiment configured as described above, a laser processing apparatus 250 including the workpiece fixing jig 210, and a sleeve using the laser processing apparatus 250 According to the method for producing a printing plate, the concave groove 215 is formed at a position corresponding to the planned cutting portion 241 and the notched portion formation scheduled portion 242 of the plate element 240 on the support surface 211 of the workpiece fixing jig 210. Since it is formed, there is no possibility that the workpiece fixing jig 210 may be damaged by the laser beam after the penetration processing.

Furthermore, in this embodiment, since the depth of the concave groove 215 is 1 mm or more, the laser beam irradiated to the inside of the concave groove 215 is not reliably focused, and the workpiece fixing jig 210 is damaged. Can be reliably prevented.
Moreover, since the width W of the concave groove 215 is 1 mm or more, the concave groove 215 is larger than the spot diameter of the laser beam, and the laser beam is surely irradiated toward the inside of the concave groove 215. Further, it is possible to reliably prevent damage to the workpiece fixing jig 210.

  Further, according to the manufacturing method of the sleeve printing plate according to the present embodiment, the plate body 240 fixed to the workpiece fixing jig 210 is laser processed to form the relief plate 233 and the positioning notch 234. Therefore, a plate-like plate material 245 whose relative positions coincide with each other can be formed. The flat plate material 245 is rounded and the end portions thereof are laser-welded or ultrasonically welded to form the cylindrical sleeve printing plate 230. Therefore, the convex plate 233 and the positioning notch 234 can be accurately aligned. It is possible to provide a high-quality sleeve printing plate 230 that can be formed well.

As mentioned above, although embodiment of this invention was described, this invention is not limited to this, It can change suitably in the range which does not deviate from the technical idea of the invention.
For example, although the shape of the recess has been described as having a V-shaped cross section or a U-shaped cross section, the present invention is not limited to this, and a recess having an arbitrary shape may be formed.

  Further, the manufactured sleeve printing plate 30 is not limited to the one described in the present embodiment. For example, the sleeve body may be made of fiber reinforced plastic (FRP) or may not have a sleeve body.

Further, the configuration of the laser processing apparatus is not limited to the present embodiment, and there is no limitation to other structures as long as the workpiece fixing jig of the present invention is provided.
Further, although the sleeve element and the plate element have been described as being cut together with the formation of the positioning notch and the relief image pattern, the present invention is not limited to this, and the cutting process may be performed separately. .

10, 110 Sleeve element support cylinder (workpiece fixing jig)
11, 111 Support surface 15, 115 Recess 30 Sleeve printing plate 34 Notch 40 for positioning 40 Sleeve body (material to be processed)
41 Planned cutting part (planned through part)
42 Notched part formation scheduled part (through-penetration scheduled part)
DESCRIPTION OF SYMBOLS 50 Laser processing apparatus 60 Laser beam irradiation part 210 Workpiece material fixing jig | tool 211 Support surface 215 Groove 230 Sleeve printing plate 234 Positioning notch part 240 Plate body 241 Cutting process scheduled part (through process scheduled part)
242 Notched part formation planned part (penetration process scheduled part)
250 Laser processing device 260 Laser beam irradiation unit

Claims (8)

A workpiece fixing jig that supports the workpiece material when performing laser processing on the workpiece material,
The material to be processed includes a through-processing scheduled portion that is processed to penetrate in the thickness direction by the laser processing,
A jig for fixing a workpiece, wherein a concave portion is formed on a support surface for supporting the workpiece, at a position corresponding to the planned penetration portion of the workpiece.   The workpiece fixing jig according to claim 1, wherein the depth of the recess is 1 mm or more.   The workpiece fixing jig according to claim 1 or 2, wherein the width of the recess is 1 mm or more.   4. The workpiece fixing jig according to claim 1, wherein the inner surface of the recess is set to have a surface roughness that is greater than that of the support surface. 5.   The work material fixing jig according to any one of claims 1 to 4, wherein the recess is a V-shaped groove. The workpiece material is a cylindrical sleeve body,
The support surface that supports the inner peripheral surface of the sleeve element body is formed with a recess that is recessed inward in the radial direction at a position corresponding to the through-penetration scheduled part of the sleeve element body. The workpiece fixing jig according to any one of claims 1 to 5, wherein:   A workpiece fixing jig according to any one of claims 1 to 6, and a laser beam irradiation for irradiating a workpiece material fixed to the workpiece fixing fixture with a laser beam. And a laser processing apparatus. A method of manufacturing a sleeve printing plate used by being mounted on a cylinder of a printing apparatus,
It has a penetration process step of irradiating the workpiece material with laser light and performing a process that penetrates in the thickness direction of the workpiece material,
In the penetration processing step, the workpiece material is supported by the workpiece fixing jig according to any one of claims 1 to 6, and a position corresponding to a planned penetration processing portion of the workpiece material. The method of manufacturing a sleeve printing plate is characterized in that the concave portion is arranged.

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