JP2007144950A - Method for punching hole for positioning sheet and device for punching hole for positioning sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a puncher which allows a printing plate to be easily set to the former and can precisely determine a position for forming a positioning hole. <P>SOLUTION: The puncher 10 for solving the problem has a base 12, a table 14, at least two reference pins 20a and 20b fitted to the base 12 and a puncher head 30(30a to 30d). In addition, the puncher 10 structured of these components as a standard, is equipped with a printing plate hold-down means 60, having a printing plate hold-down surface, which is perpendicularly installed to the plate surface of the base 12. Further, the distance between the reference pins 20a and 20b and the printing plate hold-down means 60, is set to be shorter than the length from a reference hole formed at one end of the rectangular printing plate intended for punching a hole to the other end opposite to the one end. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a method and apparatus for forming a positioning hole for a thin object, and is particularly suitable for a printing plate for printing, in which a positioning hole is formed on a printing plate of a resin film having low rigidity. The present invention relates to a method and apparatus for forming a hole for positioning a thin object.

  Thin materials that are used in the printing process and need to be positioned with high accuracy include printing plates for printing, printing masters for printing, and the like. The lithographic printing plate (press plate) includes a thin plate PS plate made of a metal such as aluminum and a printing plate made of a plastic film. Since the same pattern is printed a plurality of times according to the color classification at the time of printing, it is necessary to align each printing plate with respect to a reference position (for example, a plate cylinder) with high accuracy. For this reason, generally, a printing plate is provided with a large number of positioning holes and notches for attachment to the plate cylinder. Specifically, the printing plate initially has a reference hole (including a notch) serving as a reference for forming a positioning hole corresponding to the use of the printing press. And so on. The reference hole has various shapes such as a square shape and a U-shape, and usually two or more reference holes are formed at one end of the printing plate. The positioning hole is formed by a device called a puncher with the reference hole as a reference. The puncher is provided with a pin (reference pin) at a position corresponding to the reference hole, and the plate set is assigned to a reference hole provided at one end of the plate with respect to the reference pin. By pressing the end located on the opposite side of the end where the hole is provided, two or more reference holes are evenly pressed against the reference pin for positioning. In this state, the positioning hole is formed. Is done.

However, a printing plate made of a member other than a metal, such as a resin film, has a lower rigidity than a PS plate and has a lower accuracy of shape forming of the printing plate itself. It has been difficult to press. Therefore, a method of forming a reference hole with high accuracy for a printing plate made of a resin film or the like has been proposed and disclosed in Patent Document 1. The technique disclosed in Patent Document 1 is to artificially increase the rigidity of a printing plate made of a resin film or the like, and a printing plate made of a resin film or the like is a support plate made of a metal plate. The hole for positioning is formed by setting the puncher in a state of being stacked on the puncher.
JP 2004-82471 A

  When the technique disclosed in Patent Document 1 is carried out, it is considered that there is a possibility that the formation accuracy of the positioning holes for the printing plate is improved. However, when implementing the technique of Patent Document 1, it is necessary to prepare in advance a number of support plates corresponding to the size of the printing plate, the type of puncher, the position of the reference hole, etc. It is not practical to implement on a printing device that is difficult to make. In addition, the technique disclosed in Patent Document 1 does not disclose accuracy in setting the printing plate on the support plate, so if the accuracy is poor in this respect, the formation accuracy of the positioning hole is improved. It can no longer be made.

  Therefore, in the present invention, there is no need to prepare a support plate according to the use, the printing plate can be easily set on the apparatus, and a thin positioning hole that can accurately determine the positioning hole forming position. It is an object to provide a forming method and a hole forming apparatus for positioning a thin object.

  In order to achieve the above object, the thin-object positioning hole forming method according to the present invention positions a thin object formed in a rectangular shape using a positioning hole-forming device having at least two reference pins in the thin object mounting region. A hole for forming a thin object is formed by fitting a reference hole formed at one end of a thin object to the reference pin and pressing the other end of the thin object opposite to the one end toward the one end. This state is maintained, and a positioning hole is formed in the thin object. According to such a method, elastic energy is stored in the thin object itself by bending the thin object. By maintaining this state, the thin object presses the reference hole against the reference pin by the elastic energy. Here, since a thin object tries to disperse | distribute elastic energy equally, the force which presses each reference hole with respect to a some reference pin becomes equal.

  Further, in the thin hole positioning method as described above, the state of the bent thin object is maintained by pressing the other end side of the thin object, and the pressing position on the other end side is set to the intermediate point of the reference pin. It is desirable to do. By adopting such a method, it is possible to improve the accuracy of equalizing the pressing force of the reference hole against the reference pin.

  In addition, it is desirable that the thin object is pressed by point contact or line contact with the thin object. By adopting such a method, it is possible to reduce the contact between the part other than the reference pin and the thin object, so that the pressing force (elastic energy accumulated in the thin object) is not distributed to other parts than the reference pin. The accuracy of equalizing the pressing force can be improved.

  In the method for forming a positioning hole for a thin object as described above, it is desirable that the thin object is formed with a bent portion on the other end side to prevent the one end side from being lifted. By adopting such a method, the elastic energy accumulated by bending can be transmitted directly to the reference pin, and there is no possibility that the balance of the pressing force is lost.

  In addition, a thin object positioning hole forming apparatus according to the present invention for achieving the above object includes a thin object placement region formed in a plate shape, at least two reference pins provided in the thin object placement region, And a thin object positioning hole forming apparatus having a puncher head, wherein the thin object pressing means has a thin object pressing surface at a position perpendicular to the plate surface of the thin object mounting area and facing the reference pin. And the distance between the reference pin and the thin object pressing means is set shorter than the length from the reference hole formed at one end of the rectangular thin object to be drilled to the other end facing the one end. It is what. According to such a thin object positioning hole forming apparatus, the distance between the reference pin and the thin object pressing means is set to be shorter than the length from the reference hole formed at one end of the thin object to the other end facing the one end. Thus, when a thin object is set in the placement area, the thin object can be in a state of being bent. For this reason, elastic energy can be stored in the thin object itself, and the thin object presses the reference hole against the reference pin by the elastic energy stored in itself. Here, since a thin object tries to disperse | distribute elastic energy equally, the force which presses each reference hole with respect to a some reference pin becomes equal.

  In the thin-object positioning hole forming apparatus having the above-described configuration, it is desirable that the thin-material pressing means is disposed at an intermediate point of at least two reference pins. By setting the arrangement position of the thin object pressing means as described above, it is possible to achieve a balance when pressing the thin object.

  Further, in the thin object positioning hole forming apparatus having the above-described configuration, when the shape of the pressing surface of the thin object pressing means is an arc shape, point contact or line contact in the height direction is made to the thin object. good. By adopting such a configuration, it becomes possible to achieve a higher balance when pressing a thin object.

  Further, in the thin object positioning hole forming apparatus having the above-described characteristics, it is preferable that the thin object mounting region includes a lifting prevention means for preventing the one end side of the thin object from floating. With such a configuration, it is possible to stably press the thin object against the reference pin.

According to the method for forming a positioning hole for a thin object having the above characteristics, it is possible to easily set the thin object with respect to the apparatus for forming a positioning hole for a thin object, and to determine the formation position of the positioning hole with high accuracy. Moreover, since there is no act of providing a support plate for a thin object when forming a hole, it is naturally unnecessary to prepare these support plates.
Moreover, according to the thin-object positioning hole forming apparatus having the above characteristics, the above method can be carried out, and the effects thereof can be achieved.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a printing plate positioning hole forming method and a printing plate positioning hole forming apparatus according to the present invention will be described with reference to the drawings. The following embodiments are some embodiments according to the present invention, and the present invention is not limited only to the following embodiments.
First, with reference to FIG. 4, the thin object which forms a positioning hole using the thin-positioning hole formation apparatus (henceforth a puncher) 10 (refer FIG. 1) of this invention is demonstrated. Examples of thin materials handled in the present embodiment include printing plates for printing presses such as PS plates, paper plates, and APR resin plates made of metal, etc., and printing printing original plates such as mounts, films, and photographic papers. Can do. In the present embodiment, in particular, a printing plate constituted by a resin film such as an APR resin plate will be described as an example. The printing plate 100 handled in the present embodiment has a rectangular shape as shown in FIG. 4 and has a thickness of about 0.15 to 0.3 mm. In the printing plate 100 having such a configuration, two reference holes (notches in FIG. 4) 102a and 102b are formed at either end. Hereinafter, for the printing plate 100, an end portion where the reference hole 102 (102a, 102b) is formed is referred to as a leading end portion. In FIG. 4, the reference hole 102 is a U-shaped and square-shaped notch, but various holes may be formed depending on settings such as a round hole or an elliptical hole. The puncher 10 of this embodiment is an apparatus for forming the positioning hole 104 as shown in FIG. 4 on the printing plate 100 having such a configuration.

  Next, the puncher 10 according to the present embodiment will be described with reference to FIG. 1A is a plan view of the puncher, and FIG. 1B is a side view of the puncher. The puncher 10 of the present embodiment is basically configured to include a base 12, a table 14, reference pins 20a and 20b provided on the base 12, and puncher heads 30a to 30d. Further, the puncher 10 of the present embodiment is provided with a printing plate pressing means 60 and lifting prevention means 70a and 70b.

  The table 14 plays a role for placing the printing plate 100 on which the positioning holes 104 are formed, and the basic shape is rectangular. The base 12 and the table 14 are fixed to a table stay 16, and an adjuster means 18 for adjusting the horizontal or inclination of the table of the base 12 and the table 14 is provided in a part of the table stay 16. It is provided, and arbitrary height adjustment, horizontal adjustment, and inclination adjustment are possible. Further, the base 12 of the present embodiment is formed with a plurality of recessed portions 16a and 16b (see FIGS. 2 and 3), and the reference pin 20 (20a and 20b) and the puncher head 30 (30a to 30d). Etc. can be embedded and fixed at an arbitrary position. An area for setting the printing plate 100 on the base 12 and the table 14, that is, a distance from the reference pin 20 to the printing plate pressing means 60 is a reference hole provided at the front end portion of the printing plate 100 to be set. It is comprised so that it may become shorter than the length from 102 to a rear-end part.

  The reference pin 20 is a pin that is addressed (fitted) to a reference hole 102 provided in the printing plate 100. In the present embodiment, a pair of the reference pins 20 are symmetrically positioned with respect to the center of the base 12 in the width direction. That is, two pins are provided. The detailed configuration is as shown in FIG. 2A is a plan view showing the configuration of the reference pin 20, and FIG. 2B is a cross-sectional view taken along the line AA in FIG. In FIG. 2, the reference pin main body 22 is erected on an adjuster plate 24, and the adjuster plate 24 is fitted in a recessed portion 16 a provided in the base 12. Here, the base 12 includes a puncher head base 12a and a base cover 12b, and the recessed portion 16a includes a recessed portion provided in the puncher head base 12a and a notch provided in the base cover 12b. And a long hole shape as a whole.

  The adjuster plate 24 is formed with a long hole 26, a recessed portion 24b, and a perforation 24a. The base cover 12b is provided with a through hole 12c and a through hole 12d formed toward both ends in the longitudinal direction of the recessed portion 16a, and screw grooves are formed in the through hole 12c and the through hole 12d. ing. The puncher head base 12a is formed with a screw hole 12e for fixing the adjuster plate 24.

  In the adjuster plate 24, the puncher head base 12a, and the base cover 12b having such a configuration, a string winding spring 25b is disposed in the through hole 12d, and a tip end portion of the string winding spring 25b is inserted into a hole 24a provided in the adjuster plate 24. To do. A screw 25a screwed into the thread groove of the through hole 12d is disposed on the rear end side of the string winding spring 25b, and the adjuster plate 24 is pressed rightward in FIG. 2 by pressing the rear end portion of the string spring 25b. multiply. In the through hole 16a, a screw 25c that is screwed into a screw groove formed in the through hole 16a is disposed, and a tip end portion of the screw 25c is brought into contact with a recessed portion 24b provided in the adjuster plate 24. The adjuster plate 24 is positioned by adjusting the screwing amount. The positioned adjuster plate 24 is fixed by bolts 26 and 26 screwed into screw holes 12e and 12e formed in the puncher head base 12a. Since the longitudinal width of the recess (long hole) 16a formed in the puncher head base 12a and the base cover 12b is larger than the longitudinal width of the adjuster plate 24, the adjuster plate The arrangement position of 24 can be adjusted.

  The puncher head 30 is a means for forming a positioning hole 104 in the printing plate 100 set according to the reference pin 20 (more precisely, the reference pin main body 22). A plurality (four in FIG. 1) of puncher heads 30 are arranged for one puncher 10. The plurality of puncher heads 30a to 30d may be individually operable, but in the case of the present embodiment, each of the puncher heads 30a to 30d is connected by a long rotating shaft 50 and operates in conjunction with the rotating shaft 50. It is configured. The rotary shaft 50 is provided with at least one drive lever 52, and the puncher head 30 is configured to operate by rotating the drive lever 52.

  The specific configuration is as shown in FIG. That is, the puncher head 30 includes a puncher head main body 32, a piston 40 provided in a cylinder portion 32 a of the puncher head main body 32, and a hole-forming pin 42 connected to the piston 40. The puncher head main body 32 is roughly composed of a base portion 32c, a fixing portion 32b, and a cylinder portion 32a. Further, a notch 33 for inserting the printing plate 100 for forming the positioning hole 104 is formed between the fixed portion 32b and the cylinder portion 32a. Here, the base portion 32 c is a portion embedded in the recessed portion 16 b provided in the base cover 12 b of the puncher 10, and has a function of preventing the puncher head 30 from being displaced. The fixing portion 32b has a through hole 34 for fixing the puncher head 30 to the puncher head base 12a, and the puncher head main body 32 is fixed to the puncher head base 12a by a bolt 48 that passes through the through hole 34. Responsible for The cylinder portion 32 a has the piston 40 and the pin 42 and has a function of forming the positioning hole 104 in the printing plate 100. The puncher head base 12a is provided with a through hole 13 so that a section generated when the positioning hole 104 is formed in the printing plate 100 is discharged.

  The detailed configuration of the cylinder portion 32a is as follows. That is, it has a cylinder hole 36 and a pin hole 38 which are communication holes penetrating from the upper part of the puncher head main body 32 to the notch groove 33. The cylinder portion 32a is provided with a bearing hole 50b of the rotating shaft 50 formed so as to penetrate in a direction orthogonal to the forming axis direction of the cylinder hole 36. The cylinder hole 36 and the bearing hole 50b share a part of the hole. The piston 40, the pin 42, and the rotating shaft 50 are disposed on the cylinder portion 32a having such a configuration. As an arrangement form, the piston 40 is slidably arranged with respect to the cylinder hole 36, the pin 42 is slidably arranged with respect to the pin hole 38, and the rotating shaft 50 is arranged in the bearing hole 50b. Here, since the piston 40 and the rotating shaft 50 interfere with each other, the piston 40 is provided with a notch 40a for avoiding interference and a meshing protrusion 40b for obtaining the driving force of the rotating shaft 50, so that the rotation is possible. The shaft 50 is formed with a meshing groove 50a for meshing with the meshing protrusion 40b. With such a configuration, the rotation shaft 50 rotates counterclockwise in the drawing, whereby the piston 40 is pushed downward. In the puncher head body 32 configured as described above, the relationship between the notch groove 33 and the pin 42 is the time until the piston 40 reaches the bottom dead center when the piston 40 is lowered by the driving force of the rotating shaft 50. In addition, the distance between the pin 42 protruding from the pin hole 38 and reaching the escape hole 44 provided in the base portion 32c and the length thereof may be set.

  The puncher head main body 32 having such a configuration is provided with a piston lifting means 46 for lifting the pushed-down piston 40 to a steady position. The piston lifting means 46 is disposed above the cylinder hole 36 of the puncher head body 32, and forms a cylindrical body 46d that forms an outer shell, a spring seat 46a that is slidable inside the cylindrical body 46d, and the spring seat 46a. A compression elastic body (for example, a string spring) 46b disposed between the upper portion of the puncher head main body 32 and a rod 46c for connecting the spring seat 46a and the piston 40 to each other.

  By configuring the puncher head 30 as described above, when the piston 40 is lowered by receiving the driving force of the rotary shaft 50, the spring seat 46a connected to the piston 40 is also lowered. As the spring seat 46a is lowered, the string-wound spring 46b disposed between the puncher head main body 32 and the spring seat 46a is compressed. In this state, when the driving force applied to the rotating shaft 50 is released, the elastic energy stored in the string spring 46b is greater than the force by which the piston 40 descends, and the spring seat 46a is pulled up. Thus, the piston 40 is pulled up to the steady position. In the above description, it has been described that the engagement protrusion 40b is formed in the notch 40a of the piston 40 and the engagement groove 50a is formed in the rotating shaft 50. However, the rack gear is formed in the notch 40a of the piston 40. (Not shown) may be formed, and a gear (not shown) that meshes with the rack gear may be formed on the rotation shaft 50, and the puncher head 30 may be driven by a rack and pinion method.

  The press plate holding means 60 is provided at an intermediate point between the two reference pins 20 a and 20 b, that is, a center point in the width direction of the press plate 100 set on the base 12, and the reference holes 102 a and 102 b formed in the press plate 100. This is means for applying a pressing force in a state where 102b is directed to the two reference pins 20a and 20b. The pressing portion 64 in the printing plate pressing means 60 of the present embodiment has a cross-sectional shape that is semicircular (a bowl shape), and is configured to hold the printing plate 100 by point contact or line contact.

  A specific configuration of the press plate holding means 60 is shown in FIG. The printing plate pressing means 60 includes a horizontal plate 62b, a vertical plate 62a, and a pressing portion 64. The horizontal plate 62b and the vertical plate 62a are formed with long holes 66 including portions not shown in the drawing, and are fixed by bolts 68, so that the arrangement positions of the horizontal plate 62b and the vertical plate 62a, and the vertical plate The fixing position of the pressing portion 64 fixed to 62a is adjustable.

  As described above, the area for placing the printing plate 100 composed of the base 12 and the table in the puncher 10 of the present embodiment, that is, the distance from the reference pin 20 to the printing plate pressing means 60 is the positioning hole formation target. 6 is set to be shorter than the length from the reference hole 102 formed at the front end portion of the printing plate 100 to the rear end portion, the rear end portion of the printing plate 100 is set as shown in FIG. Is bent in a curved shape. The printing plate 100 and the printing plate pressing means 60 set in such a state are brought into contact at one point in the width direction or a straight line in the height direction. In the printing plate 100 set in the bent state, elastic energy is accumulated, and a force to return to the flat state acts. This force acts as a pressing force that presses the reference holes 102a and 102b against the reference pins 20a and 20b in an area limited by the reference pins 20a and 20b and the plate pressing means 60. Since the press plate pressing means 60 presses the press plate 100 at one point in the center in the width direction or a straight line in the height direction, the elastic energy accumulated in the bending portion 106 is obtained by an automatic aligning action. That is, the two reference pins 20a and 20b, which are the support points, and the press plate holding means 60 act evenly distributed. That is, the pressing force acting on the two reference pins 20a and 20b and the press plate holding means 60 is substantially equal, and the reference holes 102a and 102b formed in the printing plate 100 are applied to the reference pins 20a and 20b with an equal force. It can be pressed in proportion.

  The lifting prevention means 70a and 70b are means for preventing the front end portion of the printing plate 100 set on the table 14 by bending the rear end portion from being lifted from the table 14 due to the influence of the bending of the rear end portion. It is. Specifically, a plurality of guide rolls 74 that sandwich the printing plate 100 are provided on the upper surface of the table 14. The guide roll 74 may be disposed at any position where the front half of the printing plate 100 can be pressed when the printing plate 100 is set on the table 14. The distance between the table 14 and the guide roll 74 is as follows. It is preferable that the gap is slightly wider than the thickness of the plate 100 so as not to prevent the plate 100 from sliding along the table 14. The guide roll 74 may be installed on the table 14 or the table stay 16 via the fixed block 72. With such a configuration, there is no possibility that the leading end side of the printing plate 100 set on the table 14 is lifted from the table 14. Since the front end side of the printing plate 100 does not rise, the pressing force against the reference pin 20 generated by the bending can be accurately transmitted. Further, the guide roll 74 of the lifting prevention means 70 (70a, 70b) having such a configuration may be a rotary type. By making the guide roll 74 a rotary type, the printing plate 100 can be set more smoothly.

  When the positioning hole 104 is formed in the printing plate 100 using the puncher 10 having the above-described configuration, the following steps are performed. First, the front end portion of the printing plate 100 to be formed with the positioning holes is pushed between the guide roll 74 and the table 14 and pushed to the vicinity of the notch groove 33 of the puncher head 30 disposed on the base 12. Thereafter, the two reference holes 102 provided in the front end portion of the printing plate 100 are respectively directed to the two reference pins 20 provided in the base 12, and the setting of the front end portion side of the printing plate 100 is completed.

  The length from the reference hole 102 provided at the front end portion of the printing plate 100 to the rear end portion is longer than the distance from the reference pin 20 provided at the base 12 to the printing plate pressing means 60. The rear end is bent and set as shown in FIG. When the rear end portion of the printing plate 100 is bent and set on the base, at least a part of the rear end portion of the printing plate 100 is made parallel to the pressing portion 64 of the printing plate pressing means 60, It is preferable to set so that the pressing portion 64 of the pressing means 60 is in line contact with the printing plate 100.

After the plate 100 is set on the puncher 10 as described above, the rotary shaft 50 is similarly turned by rotating the drive lever 52 provided on the rotary shaft 50 counterclockwise in the figure (for example, FIG. 6). Rotate in the direction. Along with the rotation of the rotation shaft 50, the piston 40 disposed in the cylinder portion 32a of the puncher head 30 is pushed down. As the piston 40 is pushed down, the pin 42 connected to the piston 40 is also pushed down, and the pin 42 protrudes from the pin hole 38 and penetrates the printing plate 100 inserted in the notch groove 33 of the puncher head 30 to be printed. A positioning hole 104 is formed in the plate 100. After the piston 40 and the pin 42 are pushed down to the bottom dead center via the drive lever 52, the piston 40 and the pin 42 are stationary by the elastic energy (spring energy) stored in the lifting means 46 by opening the drive lever 52. Raised to position.
Thereafter, by removing the printing plate 100 from the base 12, the formation of the positioning holes 104 for the printing plate 100 is completed.

  By forming the positioning hole 104 in the printing plate 100 as described above, first, the rear end portion of the printing plate 100 is bent, and the printing plate pressing means 60 and the printing plate 100 are in line contact. Thus, the self-aligning action is generated by the elastic energy stored in the bending portion 106 of the printing plate 100, and the two reference holes 102a and 102b provided at the front end portion of the printing plate 100 are 12 is pressed against the two reference pins 20a, 20b provided on the base plate 12 with an equal force. Further, since the front end portion side of the printing plate 100 is pressed by the guide roll 74, there is no possibility that the front end portion side of the printing plate 100 is lifted from the base 12 due to the influence of the bending portion 106. For this reason, the pressing force transmitted from the bent portion 106 toward the reference pin 20 is transmitted to the front end portion of the printing plate 100 without being attenuated, and the accuracy of equalizing the pressing force against the reference pin 20 is improved. Can be made.

  In the embodiment described above, the cross-sectional shape of the pressing portion 64 in the printing plate pressing means 60 has been described as a saddle shape. However, if the contact surface with the printing plate has a shape such as point contact, line contact, or small size, the pressing portion As shown in FIG. 7, the shape of the part is a trapezoidal shape (FIG. 6 (A)) 60a in which the length of the side on the tip side is shortened, or a shape with R added to the apex of the triangle (FIG. 6 (B)). It may be in various shapes such as 60b. As a more preferable condition, it is possible to reduce the curvature of an arc provided in a portion in contact with the printing plate 100 to reduce the contact area with the printing plate 100.

  In the above embodiment, when the rear end portion of the printing plate 100 is bent, the bending portion is formed in such a manner that the rear end portion of the printing plate 100 is pulled up one end upward in FIG. 6 and then lowered downward. 106 is formed, but the method of bending the rear end of the printing plate is not limited to this. For example, as shown in FIG. 8, if a stopper plate 62c is provided at the upper end of the plate presser means 60, that is, the upper end of the vertical plate 62a, the rear end of the plate 100 is simply set up in a state of pulling up. Even in this case, the bent portion 106a is formed at the rear end portion of the printing plate. Further, when the length from the reference hole 102 formed at the front end portion of the printing plate 100 to the rear end portion is considerably longer than the distance between the reference pin 20 of the base 12 and the plate pressing means 60, The flexures 106 and 106a may be in a conflict shape. However, the folds are curved so that no folds are made.

  In the above-described embodiment, the printing plate having a resin film as a constituent member has been particularly described. However, it is also possible to cope with the formation of a reference hole for a printing plate made of metal, a printing baking original plate, or the like.

It is a figure which shows the outline | summary of the hole formation apparatus for positioning of the thin thing of this invention. It is a figure which shows the structure of the reference | standard pin in the hole formation apparatus for positioning of the thin object shown in FIG. It is a figure which shows the structure of the puncher head in the hole formation apparatus for positioning the thin object shown in FIG. It is a figure which shows the example of the thin object which forms the hole for positioning in the hole formation apparatus for positioning the thin object shown in FIG. It is a figure which shows the structure of the plate press means in the hole formation apparatus for positioning of the thin material shown in FIG. It is a figure which shows typically the state which set the thin object with respect to the hole formation apparatus for thin objects, and the length ratio of an apparatus and a thin object. It is a figure which shows the example of the cross-sectional shape of the thin object pressing means in the hole formation apparatus for positioning the thin object shown in FIG. It is a figure which shows the other example in the case of setting a thin object with respect to the hole formation apparatus for positioning a thin object.

Explanation of symbols

  10 ......... Puncher (thin positioning hole forming device), 12 ......... Base, 14 ......... Table, 16 ......... Table stay, 18 ......... Adjuster means, 20 (20a, 20b) ......... Reference pin, 22 ......... Reference pin body, 24 ......... Adjuster plate, 30 (30a to 30d) ......... Puncher head, 32 ......... Puncher head body, 33 ......... Notch groove, 40 ......... Piston 42... Pin 46... Lifting means 50... Rotating shaft 52... Drive lever 60 60 Plate presser means 70 (70 a and 70 b) Lifting prevention means , 74 ... …… Guide roll.

Claims (8)

A method of forming a positioning hole in a thin object formed in a rectangular shape using a positioning hole forming device having at least two reference pins in a thin object mounting region,
A reference hole formed at one end of a thin object is fitted to the reference pin,
The other end of the thin object facing the one end is pressed against the one end side to bend the thin object and maintain this state.
A method for forming a positioning hole for a thin object, comprising forming a positioning hole for the thin object.   2. The thin object positioning according to claim 1, wherein the state holding of the bent thin object is performed by pressing the other end side of the thin object, and the pressing position on the other end side is set as an intermediate point of the reference pin. Hole forming method.   3. The method for forming a hole for positioning a thin object according to claim 2, wherein the pressing of the thin object is performed by point contact or line contact with the thin object.   4. The thin object positioning hole formation according to claim 1, wherein the thin object is formed with a bent portion on the other end side to prevent the one end side from being lifted. 5. Method. A thin object positioning hole forming device having a thin object placement area formed in a plate shape, at least two reference pins provided in the thin object placement area, and a puncher head,
A thin material pressing means having a thin material pressing surface at a position perpendicular to the plate surface of the thin material mounting area and facing the reference pin,
The distance between the reference pin and the thin object pressing means is set shorter than a length from a reference hole formed at one end of a rectangular thin object to be drilled to the other end facing the one end. Thin object positioning hole forming apparatus.   6. The thin object positioning hole forming apparatus according to claim 5, wherein the thin object pressing means is arranged at an intermediate point of a reference pin provided with at least two.   7. The hole positioning hole for thin objects according to claim 6, wherein the shape of the pressing surface of the thin object pressing means is an arc shape so as to make point contact or line contact in the height direction with respect to the thin object. apparatus.   8. The thin object positioning hole formation according to claim 5, wherein the thin object placement region includes a lift prevention means for preventing the one end side of the thin object from being lifted. 9. apparatus.

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