JP6355879B1 - Flexographic printing plate and flexographic printing plate clamping structure with plate vice - Google Patents

Abstract

Provided is a flexographic printing plate clamping structure using a plate vice, in which the adjustment of the clamping force is simple, the flexographic printing plate is not pulled out during printing, and the plate is not easily stretched.
The eyelet member 16 protrudes from the flexographic printing plate 14 on at least one of the plate cylinder side or the printing surface side of the flexographic printing plate 14, and the plate vise 12 is fitted with the protruding portion 16 a of the eyelet member 16. A recess 24 is formed, and the flexographic printing plate 14 is sandwiched by the plate vice 12 in a state in which the protruding portion 16 a of the eyelet member 16 is fitted in the fitting recess 24 of the plate vice 12.

Description

  The present invention relates to a flexographic printing plate and a sandwiching structure for sandwiching a flexographic printing plate by a plate vice.

  Liquid crystal displays, which are now standard for video display devices, are available in all sizes from small to large. The basic principle of display of a liquid crystal display is that liquid crystal molecules are brought into contact with an alignment film and aligned with a certain regularity. Such an alignment film is placed on a liquid crystal panel substrate (particularly on a large liquid crystal panel substrate). In addition, a printing technique called flexographic printing is used as a technique for forming a thin and uniform thickness without a pinhole or the like.

  Here, a method for forming an alignment film using flexographic printing will be briefly described with reference to FIGS. 8 to 9. A flexographic printing plate 2 is wound around an outer peripheral surface of a cylindrical plate cylinder 1. . The flexographic printing plate 2 is a resin sheet-like member, and both outer end portions 2a and 2b in the circumferential direction are sandwiched between plate vices 3 (3A and 3B). Each plate vise 3 (3A, 3B) has a vice main body 4a attached to the plate cylinder 1 and a bracket 4b integrally fixed to the vice main body 4a via a bolt 4c. A plate vice 3A sandwiching one circumferential direction (upstream side) of the flexographic printing plate 2 is fixed to a first mounting recess 1a provided in the plate cylinder 1, and the other circumferential direction of the flexographic printing plate 2 (downstream). The plate vice 3B holding the side) is attached to a second mounting recess 1b provided in the plate cylinder 1 so as to be movable in the circumferential direction. A cylinder 5 is connected to the vice body 4a of the downstream plate vice 3B, and tension is applied to the flexographic printing plate 2 by the cylinder 5 pulling the vice body 4a downstream.

  The printing liquid (generally polyimide) is dropped and stored from the dispenser 6 to the liquid reservoir 6a, and the anilox roll 7 is rotated to apply the printing liquid uniformly on the surface thereof. Then, the plate cylinder 1 on which the flexographic printing plate 2 is mounted rotates synchronously with the anilox roll 7, and the printing liquid on the surface of the anilox roll 7 is applied (primary transfer) to the flexographic printing plate 2.

  At the same time, the surface plate 9 on which the liquid crystal panel substrate 8 is placed at a predetermined position is synchronously raised to a predetermined height and stands by, and the plate cylinder 1 rolls rightward in FIG. . As a result, the flexographic printing plate 2 is brought into contact with the liquid crystal panel substrate 8 and rotated to move the alignment film on the liquid crystal panel substrate 8 (secondary transfer), and the target alignment film X becomes the liquid crystal panel substrate 8. Formed on top.

  The alignment film X is formed by flexographic printing as described above, but as described above, the flexographic printing plate 2 is always given tension by the cylinder 5. Therefore, if the bolt 4c is not sufficiently tightened and the clamping force of the flexographic printing plate 2 by the plate vice 3 (3A, 3B) is insufficient, the flexographic printing plate 2 is pulled out from the plate vise 3 (3A, 3B). May occur.

  As a technique for preventing such pull-out, as shown in FIG. 10, a convex portion 4d is provided on the bracket 4b of the plate vise 3 (3A, 3B) and corresponds to the convex portion 4d in the flexographic printing plate 2. The concave portion 2c is provided at the position where the convex portion 4d and the concave portion 2c are fitted to increase the resistance of the flexographic printing plate 2 to be pulled out, and the flexographic printing plate 2 is pulled out from the plate vise 3 (3A, 3B). A method for preventing this has been proposed (see Patent Document 1).

  In the conventional method, the flexographic printing plate 2 is strongly sandwiched by the plate vice 3 (3A, 3B) to press the convex portion 4d, and by deforming it, the flexographic printing plate 2 is fitted into the concave portion 2c without a gap. However, if the flexographic printing plate 2 is pinched too much, the flexographic printing plate 2 may be damaged. Therefore, adjusting the clamping force of the flexographic printing plate 2 by the plate vice 3 to an appropriate range requires great care. It was a difficult task requiring a lot of work and labor.

  In the prior art, in order to position the flexographic printing plate 2 with respect to the plate vise 3 (3A, 3B), a positioning pin 4e is erected on the vice main body 4a, and the positioning pin 4e is inserted into the insertion hole 2d of the flexographic printing plate 2. I am trying to pass through. However, since the tension is always applied to the flexographic printing plate 2 as described above, excessive stress is applied to the contact portion between the insertion hole 2d of the flexographic printing plate 2 and the positioning pin 4e. In combination with the fact that the plate 2 is made of resin and easily deforms, there is a problem that the insertion hole 2d gradually spreads and plate displacement occurs.

Japanese Patent Laying-Open No. 2013-2231992 (FIG. 4)

  SUMMARY OF THE INVENTION The present invention has been made in view of the above-described conventional problems. A flexographic printing plate and a plate that are easy to sandwich and have little plate misalignment despite having both a pull-out prevention function and an alignment function. The object is to provide a holding structure for a flexographic printing plate by a vice.

According to the first aspect of the present invention, “a sandwiching portion 34 sandwiched by the plate vise 12 is provided at both ends,
A plurality of eyelet attachment holes 36 are formed in each clamping portion 34 at a predetermined interval.
Each eyelet attaching hole 36 is attached with an eyelet member 16 covering the hole edge,
Each eyelet member 16 is a flexographic printing plate 14 that has a protruding portion 16a protruding at least one of the plate cylinder side or the printing surface side.

The invention described in claim 2 is a sandwiching structure 10 of the flexographic printing plate 14 by the plate vice 12 that sandwiches the flexographic printing plate 14 with a pair of plate vices 12 that can be attached to the plate cylinder 1.
The both ends of the flexographic printing plate 14 are provided with clamping portions 34 that are clamped by the plate vice 12.
A plurality of eyelet attachment holes 36 are formed in each clamping portion 34 at a predetermined interval.
Each eyelet attaching hole 36 is attached with an eyelet member 16 covering the hole edge,
The eyelet member 16 protrudes from the flexographic printing plate 14 on at least one of the plate cylinder side or the printing surface side of the flexographic printing plate 14;
The plate vise 12 is formed with a fitting recess 24 into which the protrusion 16a of the eyelet member 16 is fitted,
The flexographic printing plate clamping structure 10 is characterized in that the flexographic printing plate 14 is sandwiched between the plate vices 12 with the protruding portions 16a of the eyelet members 16 fitted in the fitting recesses 24 of the printing vise 12. is there.

  The invention described in claim 3 is characterized in that "the overall height H of the eyelet member 16 is set to be larger than the thickness T of the flexographic printing plate 14".

  The invention described in claim 4 is: “The eyelet member 16 is formed with an insertion hole 40c extending from the upper surface to the lower surface, and the fastening member 22 for fastening the plate vice 12 is inserted into the insertion hole 40c. It is characterized by that.

  According to the present invention, the protruding portion protruding to the plate cylinder side of the flexographic printing plate is merely fitted into the fitting recess of the plate vice, or the fastening member for fastening the plate vice is inserted into the insertion hole of the eyelet member. The positioning of the flexographic printing plate with respect to the plate vice can be performed with high accuracy.

  In addition, since the height of the whole eyelet member is set to be larger than the thickness of the flexographic printing plate, when the flexographic printing plate is sandwiched by the plate vice, the eyelet member attached to the eyelet attaching hole of the sandwiching portion is used. It will be pinched directly. That is, when the flexographic printing plate is clamped with a plate vice, the clamping force directly acts on the eyelet member, and since the eyelet member functions as a stopper, an excessive clamping force acts on the flexographic printing plate. The flexographic printing plate is not damaged. Therefore, there is no need to worry about damage to the flexographic printing plate during the clamping work of the plate vice, and the clamping work can be easily performed.

  In addition, as described above, the flexographic printing plate is not compressed due to excessive clamping force by the plate vice (in other words, in the present invention, the flexographic printing plate is not thinned by sandwiching), and the eyelet is attached. Combined with the fact that the edge of the hole is reinforced by the eyelet member, even if tension is applied to the flexographic printing plate, the eyelet attachment hole does not spread and plate misalignment does not occur. .

It is a disassembled perspective view which shows the clamping structure of one Example of this invention. It is sectional drawing which shows a clamping structure. It is sectional drawing which shows the state in which the eyelet member is attached to the flexographic printing plate. It is a figure which shows the attachment method of the eyelet member to a flexographic printing plate. It is sectional drawing which shows the other example of a clamping structure. It is an example which shows the modification of an eyelet member. It is sectional drawing which shows the further another example of a clamping structure. It is a figure which shows the outline of flexographic printing. It is a figure which shows the state which attached the plate vice to the plate cylinder. It is a figure which shows the conventional clamping structure.

  The present invention will be described below with reference to the drawings. FIG. 1 is an exploded perspective view showing a flexographic printing plate holding structure 10 (hereinafter simply referred to as “holding structure 10”) using a plate vice according to the present invention, and FIG. 2 is a sectional view thereof.

  As shown in these drawings, the sandwiching structure 10 of the present invention is roughly constituted by a plate vise 12, a flexographic printing plate 14 and an eyelet member 16.

  The plate vice 12 is for sandwiching both end portions of the flexographic printing plate 14, and includes a vise body 18, a bracket 20, and a fastening member 22.

  The vise main body 18 is a long plate-like member made of a rigid material such as metal, and a plurality of circular fitting recesses 24 in a plan view are formed on the upper surface thereof at predetermined intervals. A nut mounting hole 26 is formed at the center of each fitting recess 24.

  The nut attachment hole 26 is for attaching a nut 30 of the fastening member 22 to be described later. The nut attachment hole 26 is connected to the bottom surface side enlarged diameter portion 26a and the upper surface side of the enlarged diameter portion 26a and has a smaller diameter than the enlarged diameter portion 26a. It is formed as a stepped hole having a diameter portion 26b (see FIG. 2). And the nut 30 of the fastening member 22 mentioned later is attached to this nut attachment hole 26. FIG.

  In this embodiment, the nut mounting hole 26 and the fitting recess 24 are formed coaxially (that is, the nut mounting hole 26 extends from the bottom of the fitting recess 24 to the bottom surface of the vice body 18. The nut mounting hole 26 and the fitting recess 24 do not necessarily have to be formed coaxially. For example, as shown in FIG. You may form in. In this case, the nut mounting hole 26 is formed so as to extend from the upper surface to the bottom surface of the vice body 18. That is, the nut mounting hole 26 is formed so as to penetrate the vice main body 18 in the vertical direction.

  The bracket 20 is a long plate-like member made of a rigid material such as metal, like the vice main body 18, and the length thereof is set to be substantially equal to that of the vice main body 18. The upper surface of the bracket 20 is cut off at both ends in the longitudinal direction obliquely, and a bolt insertion hole 28 extending from the upper surface to the lower surface is formed at a position corresponding to the fitting recess 24 of the vice body 18. Yes. On the inner surface of the bolt insertion hole 28, a bolt abutment rod 28a is formed.

  The fastening member 22 sandwiches the flexographic printing plate 14 interposed between the vice body 18 and the bracket 20 by its fastening force, and has a nut 30 and a bolt 32.

  The nut 30 is connected to the base portion 30 a that fits into the enlarged diameter portion 26 a of the nut attachment hole 26, and the nut portion 30 b that is connected to the upper end of the base portion 30 a and fits into the narrow diameter portion 26 b of the nut attachment hole 26. A female screw 30c is engraved in the center of the nut portion 30b.

  The bolt 32 has a head portion 32a that fits into the bolt insertion hole 28, and a foot portion 32b that is suspended from the head portion 32a. The size of the foot portion 32b is appropriately set so that the foot portion 32b can pass through the gap surrounded by the bolt contact rod 28a and can be screwed into the female screw 30c of the nut 30.

  The position and the number of the fastening members 22 are not particularly limited, and can be set as appropriate within a range that can sufficiently secure the clamping force of the flexographic printing plate 14. In this embodiment, the flexographic printing plate 14 is sandwiched by using four fastening members 22.

  The flexographic printing plate 14 is a sheet-like member, and the size thereof is appropriately set according to the size of the plate cylinder 1. In this embodiment, the flexographic printing plate 14 has a three-layer structure, the plate cylinder side is a base film 14a which is a thin film layer made of PET (polyethylene terephthalate), the central portion is an intermediate layer 14b, and the printing surface side is This is the photosensitive rubber layer 14c (see the circle in FIG. 1). For simplicity, the flexographic printing plate 14 is depicted as one sheet-like member in FIG.

  Both outer end portions of the flexographic printing plate 14 are pinching portions 34 that are pinched by the plate vice 12, and eyelet attachment holes 36 are formed in the pinching portions 34 at positions corresponding to the fitting concave portions 24 of the vice body 18. Has been. The eyelet attachment hole 36 is a stepped hole having a large diameter portion 36a on the printing surface side and a small diameter portion 36b on the opposite plate cylinder side, and an eyelet member 16 described later is attached to the eyelet attachment hole 36 ( 3 to 4). The eyelet attachment hole 36 is formed with high positional accuracy by laser processing.

  The eyelet member 16 is a “stopper” for preventing the flexographic printing plate 14 from being undesirably compressed when the flexographic printing plate 14 is sandwiched and fixed by the plate vice 12, and for reinforcing the edge of the eyelet mounting hole 36. It functions as a “reinforcing member” and a “positioning member” of the flexographic printing plate 14 with respect to the plate vice 12, and includes a lower eyelet member 38 and an upper eyelet member 40.

  The lower eyelet member 38 is a member made of a rigid material such as a metal, and has an outer cylindrical portion 38a and a plate cylinder side having a larger diameter than the outer cylindrical portion 38a extending outward at the lower end portion of the outer cylindrical portion 38a. It has a flange 38b and is formed in a substantially convex shape (inverted T shape) when viewed from the side. The outer cylindrical portion 38 a has an outer diameter set substantially equal to the inner diameter of the small diameter portion 36 b of the eyelet attachment hole 36, and the axial length a 1 is the axial length of the small diameter portion 36 b of the eyelet attachment hole 36. It is set substantially equal to the length t1 (see FIGS. 3 to 4). A hole provided in the center of the outer cylindrical portion 38a is an upper eyelet member mounting hole 38c. The plate cylinder side flange portion 38b protrudes downward from the plate cylinder side surface of the flexographic printing plate 14 (this protruding portion is the protruding portion 16a of the eyelet member 16. This will be described later), and its height. The length a2 is set approximately equal to the digging depth of the fitting recess 24. The outer diameter of the plate cylinder side flange 38b is set to be approximately equal to the inner diameter of the fitting recess 24 of the vice body 18.

  The upper eyelet member 40 is a member made of a rigid material such as a metal, like the lower eyelet member 38, and includes an inner cylindrical portion 40a and an inner cylindrical portion 40a extending outward at the upper end portion of the inner cylindrical portion 40a. Has a large-diameter printing surface side flange 40b, and is formed in a substantially reverse convex shape (T-shape) when viewed from the side surface. The inner cylindrical portion 40 a has an outer diameter set to be substantially equal to the inner diameter of the outer cylindrical portion 38 a of the lower eyelet member 38, and the printing surface side flange portion 40 b is an eyelet formed on the flexographic printing plate 14. It is set approximately equal to the large diameter portion 36 a of the mounting hole 36.

  The axial length b1 of the inner cylindrical portion 40a is set to be approximately equal to the height (a1 + a2) of the entire lower eyelet member 38. The height b2 of the printing surface side flange 40b is set to be approximately equal to the digging depth t2 of the large diameter portion 36a of the eyelet attachment hole 36.

  In a state where the eyelet member 16 is attached to the eyelet attachment hole 36 of the flexographic printing plate 14, the overall height H of the eyelet member 16 is set to be larger than the thickness T of the flexographic printing plate 14. In addition, a region where the lower eyelet member 38 holds the flexographic printing plate 14 (width a3 where the plate cylinder side flange 38b contacts the flexographic printing plate 14), and an upper eyelet member 40 holds the flexographic printing plate 14 Area (the width b3 at which the printing surface side flange 40b contacts the flexographic printing plate 14) is set to be approximately equal.

  The attachment of the eyelet member 16 to the eyelet attachment hole 36 of the flexographic printing plate 14 is performed using a separately prepared attachment jig 42 (see FIG. 4). Here, the mounting jig 42 will be briefly described. The mounting jig 42 is a flat plate-like member made of a rigid material such as metal, and an eyelet mounting hole 42a is formed on the upper surface thereof. ing.

  The eyelet mounting hole 42a is formed substantially equal to the plate cylinder side flange portion 38b of the lower eyelet member 38, and a column 42b is erected at the center portion thereof. The outer diameter of the support post 42b is set to be approximately equal to or slightly smaller than the insertion hole 40c provided at the center of the inner tubular portion 40a of the upper eyelet member 40.

  The method of mounting the eyelet member 16 in the eyelet attachment hole 36 using the attachment jig 42 configured as described above will be described. First, the plate of the lower eyelet member 38 in the eyelet attachment hole 42a of the attachment jig 42 is described. The trunk side flange 38b is fitted, and the flexographic printing plate 14 is placed thereon. At this time, the flexographic printing plate 14 is placed so that the outer cylindrical portion 38 a of the lower eyelet member 38 is inserted into the eyelet attachment hole 36 of the flexographic printing plate 14.

  When the flexographic printing plate 14 is placed, the upper eyelet member 40 is addressed from the printing surface side (upper surface side in FIG. 4) of the flexographic printing plate 14, and the inner cylindrical portion 40a is moved outside by using a press machine or the like (not shown). Press fit into the upper eyelet member mounting hole 38c of the cylindrical portion 38a. Thereby, the upper eyelet member 40 and the lower eyelet member 38 are integrated, and the eyelet member 16 is attached to the eyelet attachment hole 36 of the flexographic printing plate 14. In the state where the eyelet member 16 is attached to the eyelet attachment hole 36, the whole hole edge of the eyelet attachment hole 36 is reinforced by the eyelet member 16. Then, by performing the above operation on all the eyelet attachment holes 36, the attachment of the eyelet member 16 to the flexographic printing plate 14 is completed.

  When the flexographic printing plate 14 having the eyelet members 16 attached to all the eyelet attachment holes 36 is sandwiched between the plate vices 12, first, the nuts 30 of the fastening members 22 are first attached to the nut attachment holes 26 of the vice body 18 in advance. . In this embodiment, as described above, the nuts 30 are attached to the four nut attachment holes 26, but the nuts 30 may be attached to all the nut attachment holes 26.

  Then, the sandwiching portion 34 of the flexographic printing plate 14 to which the eyelet member 16 is attached is placed on the vice body 18 to which the nut 30 is attached. At this time, when the protruding portion 16a of the eyelet member 16 (more specifically, the plate cylinder side collar portion 38b of the lower eyelet member 38) is fitted into the fitting recess 24 of the vice body 18, the plate cylinder side collar portion Since the outer diameter of 38b and the inner diameter of the fitting recess 24 are set to be substantially equal, there is no backlash between the plate cylinder side flange 38b and the fitting recess 24. That is, the “positioning” of the flexographic printing plate 14 with respect to the plate vice 12 is automatically performed by fitting the eyelet member 16 and the fitting recess 24.

  When the positioning of the flexographic printing plate 14 with respect to the vice main body 18 is completed, the position of the bracket 20 is adjusted so that the bolt insertion hole 28 of the bracket 20 and the eyelet member 16 (more specifically, the insertion hole 40c of the upper eyelet member 40) coincide. Meanwhile, the bracket 20 is placed on the flexographic printing plate 14. Then, the foot 32 b of the bolt 32 is inserted into the bolt insertion hole 28, and the tip thereof is screwed into the female screw 30 c of the nut 30. Then, the head portion 32a of the bolt 32 abuts against the bolt abutment rod 28a and presses the bracket 20 toward the vice main body 18 side, and the base portion 30a of the nut 30 abuts against the enlarged diameter portion 26a and the vice main body 18 is moved. By pressing toward the bracket 20, a clamping force is generated, and the flexographic printing plate 14 is clamped and fixed by the plate vice 12.

  The “positioning” of the flexographic printing plate 14 with respect to the plate vice 12 is also performed by inserting the fastening member 22 into the insertion hole 40 c of the eyelet member 16.

  According to the present embodiment, the flexographic printing plate 14 is automatically positioned with respect to the plate vice 12 by fitting the projection 16a projecting toward the plate cylinder side of the flexographic printing plate 14 into the fitting recess 24 of the plate vice 12. The protrusion 16a of the eyelet member 16 is fitted into the fitting recess 24 of the flexographic printing plate 14, so that the flexographic printing plate 14 moves in the pull-out direction with respect to the plate vice 12. Be regulated.

  Further, since the height H of the entire eyelet member 16 is set to be larger than the thickness T of the flexographic printing plate 14, when the flexographic printing plate 14 is sandwiched between the vice body 18 and the bracket 20 (that is, the flexographic printing plate 12 uses the flexographic printing plate 12). When the printing plate 14 is clamped), the eyelet member 16 functions as a “stopper”, and an excessive clamping force does not act on the flexographic printing plate 14. Therefore, no matter how tightly the plate vice 12 is sandwiched, an excessive clamping force does not act on the flexographic printing plate 14 (no undesired damage), and the clamping operation can be easily performed. .

  Further, the eyelet attachment hole 36 of the flexographic printing plate 14 is reinforced by an eyelet member 16 made of a rigid material such as metal at the whole edge of the hole. Therefore, when tension is applied to the flexographic printing plate 14, the fastening member 22 comes into contact with the insertion hole 40c of the eyelet member 16, but as described above, the eyelet member 16 is entirely formed of a rigid material such as metal. Because it is not deformed. Further, since the hole edge of the eyelet attachment hole 36 is sandwiched between the plate cylinder side flange 38b of the lower eyelet member 38 and the printing surface side flange 40b of the upper eyelet member 40, the flexographic printing plate is printed. Even if tension is applied to 14, the shape does not collapse. Since the thin foot portion 32b of the bolt 32 is in direct contact with the inner surface of the eyelet attachment hole 36 and does not directly contact the flexographic printing plate 14, the eyelet member 16 is coupled with the fact that the eyelet member 16 has a large diameter. Elongation does not occur in the mounting hole 36, and plate misalignment does not occur.

  In the above-described embodiment, “positioning” of the flexographic printing plate 14 with respect to the plate vice 12 by “fitting the eyelet member 16 and the fitting recess 24” and “insertion of the fastening member 22 into the insertion hole 40c of the eyelet member 16”. Such “positioning” is performed by either “fitting the eyelet member 16 and the fitting recess 24” or “inserting the fastening member 22 into the insertion hole 40c of the eyelet member 16”. If there is, it works.

  For example, when the positioning is performed only by “fitting the eyelet member 16 and the fitting recess 24”, the nut mounting hole 26 and the fitting recess 24 are placed at different positions as in the above-described embodiment of FIG. Can be formed. On the other hand, when the positioning is performed only by “insertion of the fastening member 22 into the insertion hole 40 c of the eyelet member 16”, the inner diameter of the fitting recess 24 is set to the protruding portion 16 a (plate plate) of the eyelet member 16 as shown in FIG. The diameter can be larger than the outer diameter of the trunk side flange 38b).

  Further, in the above-described embodiment, the protruding portion 16a of the eyelet member 16 is formed on the plate cylinder side of the flexographic printing plate 14, but it may be formed on the printing surface side, as shown in FIG. Further, it may be formed on both the plate cylinder side and the printing surface side. When the protruding portion 16 a is formed on the printing surface side of the flexographic printing plate 14, a fitting recess 24 into which the protruding portion 16 a is fitted is formed on the bottom surface of the bracket 20 of the plate vice 12.

1: plate cylinder, 1a: first mounting recess, 1b: second mounting recess, 2: flexographic printing plate, 2a, 2b: outer end (of flexographic printing plate), 2c: recess, 2d: insertion Hole, 3 (3A, 3B): plate vise, 4a: vise body, 4b: bracket, 4c: bolt, 4d: convex part, 4e: positioning pin, 5: cylinder, 6: dispenser, 6a: liquid reservoir, 7: Anilox roll, 8: substrate for liquid crystal panel, 9: surface plate, 10: sandwich structure of flexographic printing plate, 12: plate vise, 14: flexographic printing plate, 16: eyelet member, 16a: protrusion, 18: vice body, 20: bracket, 22: fastening member, 24: fitting recess, 26: nut mounting hole, 26a: enlarged diameter portion, 26b: narrow diameter portion, 28: bolt insertion hole, 28a: bolt abutment rod, 30: nut, 30a: base, 30b: nut 30c: female screw, 32: bolt, 32a: head, 32b: foot, 34: clamping part, 36: eyelet attachment hole, 36a: large diameter part, 36b: small diameter part, 38: lower eyelet member, 38a : Outer cylindrical portion, 38b: plate cylinder side flange, 38c: upper eyelet member mounting hole, 40: upper eyelet member, 40a: inner cylindrical portion, 40b: printing surface side flange, 40c: insertion hole, 42: Mounting jig, 42a: Eyelet mounting hole, 42b: Support column, a1: Length in the axial direction of the outer cylindrical portion, a2: Height of the plate cylinder side flange, a3: Plate cylinder side flange is the flexographic printing plate Width in contact, b1: Length in the axial direction of the inner cylindrical part, b2: Height of the printing surface side ridge, b3: Width in which the printing surface side ridge contacts the flexographic printing plate, H: Whole eyelet member Height, t1: Length in the axial direction of the small diameter portion of the eyelet attachment hole, t2: Depth of the large diameter portion of the eyelet attachment hole, T: F Kiso printing plate of the thickness, X: an alignment film

Claims (3)

The flexographic printing plate is sandwiched by a plate vice that sandwiches the flexographic printing plate with a pair of plate vices that can be attached to a plate cylinder,
Both ends of the flexographic printing plate are provided with a clamping portion that is clamped by the plate vice,
A plurality of eyelet attachment holes are formed at predetermined intervals in each of the clamping portions,
Each eyelet attachment hole is attached with an eyelet member that covers the edge of the hole,
At least one of the plate cylinder side or the printing surface side of the flexographic printing plate, the eyelet member protrudes from the flexographic printing plate,
The plate vise is formed with a fitting recess into which the protruding portion of the eyelet member is fitted,
A flexographic printing plate clamping structure, wherein the flexographic printing plate is clamped by the plate vice in a state where the protruding portion of the eyelet member is fitted in the fitting recess of the plate vice.   The flexographic printing plate clamping structure according to claim 2, wherein an overall height of the eyelet member is set to be greater than a thickness of the flexographic printing plate.   The insertion member from the upper surface to the lower surface is formed in the eyelet member, and the fastening member for fastening the plate vice is inserted through the insertion hole. Flexographic printing plate clamping structure.

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