JP2005335229A - Plate material pinching device for stencil printing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a plate material pinching device, with which a plate material can be pinched developing neither undulation nor wrinkles, in addition, with no positional shifting to a plate material winding body. <P>SOLUTION: In the plate material pinching device 9 for pinching a plate material 10 which had been fed in a stencil printing machine in order to wind about the plate material winding body of a printing equipment, a fixed pinching part 91 fixed to the plate material winding body and a moving pinching part 92 movable towards the fixed pinching part are equipped so as to pinch the plate material towards a winding direction by means of the fixed pinching part and the moving pinching part through the motion of the moving pinching part 92. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a plate material clamping device that clamps a supplied plate material to wind it around a plate material winding body of a printing apparatus in a stencil printing machine.

  In general, as a plate material clamping device of a stencil printing machine, a structure using a magnetic attraction force in a hinge system as shown in Patent Documents 1 and 2 is used.

On the other hand, as the plate material, a material obtained by bonding an ink permeable sheet as a support to a thermoplastic resin film is generally used. However, various inconveniences have been pointed out regarding the use of such a plate material, as shown in Patent Document 3. Therefore, it is desired to use a plate material that is not bonded with an ink-permeable sheet, that is, a plate material that is substantially made of only a thermoplastic resin film. An example of such a plate material is disclosed in Patent Document 4. The plate material disclosed in Patent Document 4 is composed only of a thermoplastic resin film having a large number of minute recesses formed on one surface.
JP 2003-72214 A Japanese Patent Laid-Open No. 2003-312114 JP 2003-112402 A JP 2001-213065 A

  When the supplied plate material is wound around the plate material winding body of the printing apparatus, the plate material is not wavy or wrinkled, and the plate material is not displaced relative to the plate material winding body. That is desirable.

  An object of the present invention is to provide a plate material clamping device that can clamp a plate material without generating undulations and wrinkles, and that can clamp the plate material without being displaced with respect to the plate material winding body.

  The invention according to claim 1 is a plate material winding apparatus in which, in a stencil printing machine, a plate material that has been fed is sandwiched to be wound around a plate material winding body of a printing apparatus. A fixed clamping part fixed to the movable clamping part, and a movable clamping part movable toward the fixed clamping part.By moving the movable clamping part, the plate material is moved between the fixed clamping part and the movable clamping part. It is characterized by being clamped in the winding direction.

  The invention according to claim 2 is the invention according to claim 1, further comprising a slide portion that slides in a direction orthogonal to the winding direction, and the movable clamping portion is moved by sliding the slide portion. It is.

  According to a third aspect of the present invention, in the first aspect of the present invention, the movable clamping unit includes a rotation shaft fixed to the plate material winding body, and the movable clamping unit is rotated about the rotation axis. It is intended to move.

  According to a fourth aspect of the present invention, in the first aspect of the invention, the movable holding portion can receive the protruding portion protruding so as to push the plate material in a folded state between the fixed holding portion. Is provided.

  According to a fifth aspect of the present invention, in the invention of the fourth aspect, the movable clamping portion is configured so that the projecting portion moves backward between the movable clamping portion and the fixed clamping portion while leaving the plate material at the same time. It is intended to move toward.

  The invention according to claim 6 is the invention according to claim 1, wherein the fixed clamping part and the movable clamping part sandwich the plate material with the friction member interposed therebetween.

  According to the invention described in claim 1, since the plate material can be clamped in the winding direction by the fixed clamping portion and the movable clamping portion, the plate material can be clamped without generating undulations and wrinkles. The plate material can be held without being displaced with respect to the body.

  According to the second aspect of the present invention, since the plate material can be clamped only by sliding the slide portion, it is possible to improve the efficiency of the work from the plate supply to the winding.

  According to the third aspect of the present invention, since the plate material can be clamped only by rotating the movable clamping part, it is possible to improve the efficiency of the work from feeding to winding.

  According to the invention of claim 4, since the plate material can be clamped in a folded state, the plate material can be firmly clamped.

  According to the fifth aspect of the present invention, since the supplied plate material can be sandwiched immediately as it is, the plate material can be sandwiched without generating undulations and wrinkles.

  According to invention of Claim 6, a plate material can be clamped firmly.

(Embodiment 1)
FIG. 1 is a schematic sectional view of a stencil printing machine equipped with a plate material clamping device of the present invention. In the stencil printing machine 100, the plate material 10 is supplied from the roll 21 of the supply unit 2, and is subjected to plate-making by being heated and perforated by the thermal head 31 in the plate-making device 3. It will be paid. The printing apparatus 5 includes a multi-cylinder type plate material winding body 50 having two rollers 51 and 52, and the supplied plate material 10 is nipped by a plate material nipping device 9 to obtain a plate material. It is wound around the wound body 50. The printing device 5 may be a single cylinder type. On the other hand, the printing paper 61 is fed to the printing device 5 by the paper feeding device 6. In the printing apparatus 5, the printing paper 61 is pressed against the roller 52 by a press roller 62 that is a pressing unit, and printing based on the plate material 10 is performed. After the printing is finished, the printed paper 61 is sent to the paper discharge tray 72 by the paper discharge roller 71 of the paper discharge device 7, and the plate material 10 used for printing is peeled off from the printing device 5 by the plate discharge device 8. Collected.

  In the stencil printing machine 100 that operates as described above, the plate material clamping device 9 is provided in the plate material winding body 50. By the way, a double cylinder type plate material winding body 50 includes two rollers 51 and 52 arranged side by side at an interval in the vertical direction, and pulleys (not shown) provided coaxially with the rollers on both sides of each roller. And an endless belt 53 (only one is shown) that is stretched between two pulleys on the same side of both rollers, and the plate material 10 is stretched along the two rollers 51 and 52 and wound. It has come to be. The plate material clamping device 9 is installed between the endless belts 53 along a direction orthogonal to the winding direction (arrow B direction) of the plate material 10, and includes a front end portion and a rear end portion of the plate material 10. Are provided at two locations.

  Below, the plate material clamping apparatus 9 of this embodiment is demonstrated in detail.

  2 is a front view showing the plate material clamping device 9 viewed from the plate feeding device 4 side, FIG. 3 is a sectional view taken along the line III-III in FIG. 2, FIG. 4 is a sectional view taken along the line IV-IV in FIG. It is VV sectional drawing of. The apparatus 9 includes a fixed holding unit 91 fixed to the substrate 90, a movable holding unit 92 and a slide unit 93 attached to the substrate 90. The substrate 90 is fixed to the plate material winding body 50. The fixed clamping portion 91, the movable clamping portion 92, and the slide portion 93 all extend in a direction orthogonal to the winding direction of the plate material 10 (arrow A direction).

  The fixed clamping portion 91 is fixed to the substrate 90 by pins 901. A friction member 912 made of rubber or the like is provided on the surface of the fixed clamping unit 91 facing the movable clamping unit 92.

  The movable holding portion 92 and the slide portion 93 are provided in a state of being overlapped with the substrate 90. As shown in FIG. 4, a pin 902 extending from the substrate 90 is provided through the movable holding portion 92 and the slide portion 93. A stopper 903 is attached to the tip of the pin 902 to prevent it from coming off. In the movable holding portion 92, a longitudinal long hole 921 is formed in the penetrating portion of the pin 902. In the slide portion 93, a lateral long hole 931 is formed in the penetrating portion of the pin 902. The pins 902, the long holes 921, and the long holes 931 are provided on both sides of the device 9 in the direction of arrow A, that is, at two locations.

  As shown in FIG. 5, the slide portion 93 is provided with a pin 922 extending from the movable holding portion 92. A clasp 923 is attached to the tip of the pin 922 to prevent it from coming off. In the slide portion 93, a long hole 932 in the inclined direction is formed in the penetrating portion of the pin 922. The pins 922 and the long holes 932 are provided on both sides of the device 9 in the direction of arrow A, that is, at two locations.

  The slide portion 93 can slide in the direction of arrow A, and FIG. 2 shows a state before the slide portion 93 is slid in the direction of arrow A1. In FIG. 2, the pin 902 is located on the front side in the sliding direction (arrow A1 direction) in the long hole 931 and is located on the upper end in the long hole 921 (FIG. 4). It is located on the front side of the long hole 932 in the direction of arrow A1. The long hole 932 is inclined upward in the anti-sliding direction (arrow A2 direction). FIG. 6 is a front view showing the device 9 with the slide portion 93 removed.

  With the above configuration, when the slide portion 93 is slid in the direction of the arrow A1, the pin 902 moves relatively in the direction of the arrow A2 in the long hole 931, and the pin 922 moves relatively in the direction of the arrow A2 in the long hole 932. The pin 902 moves upward in the long hole 921 relatively downward. That is, when the slide part 93 is slid in the direction of the arrow A1, the movable holding part 92 moves upward, that is, toward the fixed holding part 91.

  By the way, the horizontal dimensions L1 and L2 of the long holes 931 and 932 (both in FIG. 2) and the vertical dimensions H1 (FIG. 6) and H2 (FIG. 2) of the long holes 921 and 932 slide the slide portion 93. Accordingly, the plate member 10 is set so as to be sandwiched between the slide portion 93 and the movable sandwiching portion 92 when the movable sandwiching portion 92 moves upward. Therefore, according to the apparatus 9 having the above configuration, the plate material 10 can be clamped from both sides in the winding direction (arrow B direction) by the fixed clamping unit 91 and the movable clamping unit 92. FIG. 7 shows a state after the slide portion 93 is slid in the arrow A1 direction. 8 is a cross-sectional view taken along the line VIII-VIII in FIG.

  As described above, the apparatus 9 having the above-described configuration causes the sliding portion 93 to slide in the direction of arrow A, thereby moving the movable clamping portion 92, so that the clamping between the fixed clamping portion 91 and the movable clamping portion 92 is performed. The space 94 (FIG. 3 etc.) can be opened and closed in the winding direction. Therefore, according to the apparatus 9 having the above-described configuration, the plate material 10 can be clamped as follows. In other words, as shown in FIG. 9, the apparatus 9 configured as described above holds the protruding portion 41 of the plate feeding device 4 protruding together with the plate material 10 in a state where the holding space 94 is opened in the winding direction. Receive in space 94. Then, as shown in FIG. 10, at the same time as the protruding portion 41 moves backward, the clamping space 94 is closed in the winding direction. Thereby, the plate material 10 left in the clamping space 94 is clamped by the fixed clamping unit 91 and the movable clamping unit 92 in a folded state.

  According to the apparatus 9 having the above configuration, the plate material 10 can be clamped in the winding direction. Therefore, the plate material 10 can be clamped without generating undulations and wrinkles, and the plate material 10 can be clamped without being displaced with respect to the plate material winding body 50.

  Moreover, since the plate material 10 can be held in a folded state, the plate material 10 can be firmly held. Further, since the plate material 10 can be clamped with the friction member 912 interposed, the plate material 10 can be firmly clamped also from this point. Furthermore, since the plate material 10 can be clamped simultaneously with the retreat of the protruding portion 41, the plate material 10 can be clamped without generating undulations and wrinkles.

(Embodiment 2)
The configuration of the entire stencil printing machine is the same as that of the first embodiment. 11 is a front view showing the plate material clamping device 9 of the present embodiment, and FIG. 12 is a cross-sectional view taken along the line XII-XII in FIG. The apparatus 9 includes a fixed clamping unit 95 and a rotation shaft 96 fixed to the substrate 90, and a movable clamping unit 97 attached to the rotation shaft 96. The fixed clamping part 95, the rotation shaft 96, and the movable clamping part 97 all extend in a direction orthogonal to the winding direction of the plate material 10 (arrow A direction).

  The fixed clamping part 95 is fixed to the substrate 90 by pins 903. A friction member 952 made of rubber or the like is provided on the surface of the fixed clamping unit 95 facing the movable clamping unit 97.

  The rotation shaft 96 is fixed to the substrate 90 by pins 904 at a plate portion 961 extending from a part thereof.

  The movable clamping portion 97 is fitted around the rotation shaft 96 at the lower end portion 971 and can be rotated around the rotation shaft 96 in the direction of arrow C. FIG. 12 shows a state after the movable clamping part 97 is rotated in the direction of the arrow C1, and FIG. 13 shows a state before the same is also rotated. When the movable clamping unit 97 rotates about the rotation axis 96 in the direction of the arrow C1, the clamping space 98 between the upper end 972 and the fixed clamping unit 95 is gradually narrowed, and finally the fixed clamping unit 95. The plate material 10 can be held between the two. Note that frames 973 are provided at both ends of the movable sandwiching portion 97, and the movable sandwiching portion 97 is rotated via the frame 973.

  Therefore, according to the apparatus 9 having the above configuration, the plate material 10 can be clamped in the winding direction (arrow B direction) by the fixed clamping unit 95 and the movable clamping unit 97.

  As described above, the apparatus 9 having the above-described configuration rotates the movable holding portion 97 around the rotation shaft 96 in the direction of the arrow C1, thereby holding the holding space 98 (the holding space 98 between the fixed holding portion 95 and the movable holding portion 97). 13) can be opened and closed in the winding direction. Therefore, according to the apparatus 9 having the above-described configuration, the plate material 10 can be clamped as follows. That is, as shown in FIG. 14, the apparatus 9 configured as described above holds the protruding portion 41 of the plate feeding device 4 protruding together with the plate material 10 in a state where the holding space 98 is opened in the winding direction. Receive in space 98. And as shown in FIG. 15, the protrusion part 41 reverse | retreats and the clamping space 98 is closed in the winding direction simultaneously. Thereby, the plate material 10 left in the clamping space 98 is clamped by the fixed clamping unit 95 and the movable clamping unit 97 in a folded state.

  According to the apparatus 9 having the above configuration, the plate material 10 can be clamped in the winding direction. Therefore, the plate material 10 can be clamped without generating undulations and wrinkles, and the plate material 10 can be clamped without being displaced with respect to the plate material winding body 50.

  Moreover, since the plate material 10 can be held in a folded state, the plate material 10 can be firmly held. Further, since the plate material 10 can be clamped with the friction member 952 interposed, the plate material 10 can be firmly clamped also from this point. Furthermore, since the plate material 10 can be clamped simultaneously with the retreat of the protruding portion 41, the plate material 10 can be clamped without generating undulations and wrinkles.

(Another embodiment)
The friction member may be provided in the movable holding portion instead of the fixed holding portion, or may be provided in both holding portions.

  The plate material clamping device of the present invention can clamp the plate material without generating undulations and wrinkles, and can clamp the plate material without being displaced with respect to the plate material winding body. It ’s big.

1 is a schematic cross-sectional view of a stencil printing machine provided with a plate material clamping device of the present invention. FIG. 3 is a front view showing the plate material clamping device according to the first embodiment as viewed from the plate feeding device side. FIG. 3 is a sectional view taken along line III-III in FIG. 2. It is IV-IV sectional drawing of FIG. It is VV sectional drawing of FIG. It is a front view which shows the apparatus of the state which removed the slide part. It is a front view which shows the state after sliding a slide part. It is VIII-VIII sectional drawing of FIG. FIG. 3 is a cross-sectional view illustrating a step of the operation of the plate material clamping device according to the first embodiment. FIG. 10 is a cross-sectional view showing a step subsequent to FIG. 9. FIG. 6 is a front view showing a plate material clamping device according to a second embodiment. It is XII-XII sectional drawing of FIG. It is sectional drawing which shows the state before a movable clamping part rotates. FIG. 10 is a cross-sectional view showing one step of the operation of the plate material clamping device of Embodiment 2. FIG. 15 is a cross-sectional view showing a step subsequent to FIG. 14.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Plate material 100 Stencil printing machine 5 Printing apparatus 50 Plate material winding body 9 Plate material clamping device 91,95 Fixed clamping part 92,97 Movable clamping part 93 Slide part 96 Rotating shaft 912,952 Friction member

Claims (6)

In a stencil printing machine, in a plate material clamping device that clamps a supplied plate material to be wound around a plate material winding body of a printing apparatus,
A fixed clamping portion fixed to the plate material winding body;
A movable sandwiching portion movable toward the fixed sandwiching portion,
A plate material clamping device for a stencil printing machine, wherein the plate material is clamped in a winding direction by a fixed clamping unit and a movable clamping unit by moving the movable clamping unit. It has a slide part that slides in a direction perpendicular to the winding direction,
The plate material clamping device of a stencil printing machine according to claim 1, wherein the movable clamping unit is moved by sliding the slide unit. A rotating shaft fixed to the plate material winding body is provided,
The plate material clamping device of a stencil printing machine according to claim 1, wherein the movable clamping unit is moved by rotating the movable clamping unit around a rotation axis.   The plate of a stencil printing machine according to claim 1, wherein the movable holding part is provided so that a protruding part protruding so as to be pushed in in a state where the plate material is folded can be received between the movable holding part and the fixed holding part. Material clamping device.   5. The movable clamping part according to claim 4, wherein the movable clamping part moves toward the fixed clamping part at the same time that the protruding part moves backward from the movable clamping part and the fixed clamping part leaving the plate material. Plate material clamping device for stencil printing machines. The plate material clamping device of a stencil printing machine according to claim 1, wherein the fixed clamping unit and the movable clamping unit are configured to clamp the plate material with a friction member interposed therebetween.

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