JP3153030U - Blanket or printing plate fixing device - Google Patents

Abstract

A fixing device capable of fixing a blanket or a printing plate more reliably is provided. A blanket or printing plate fixing device for fixing a blanket 10 or a printing plate wound around a cylinder 20 in a rotary press, the blanket or a plate fixing device formed on the cylinder 20 being hooked on a holding side 11a of the blanket or printing plate; A restraining groove 21 into which the gripper edge side 11b is inserted, a hook part 30 formed or attached to the gripper edge side 11b of the blanket or printing plate, and a hook part 30 which is hooked or fixed to the hook part 30 and held at the gripper bottom side of the blanket or printing plate 11b is provided with a string-like body 40 that applies a force in a direction in which 11b is pulled into the restraining groove 21 to the hook portion 30. [Selection] Figure 1

Description

  The present invention relates to a blanket or printing plate fixing device for fixing a blanket or printing plate wound around a cylinder in a rotary press.

  In a rotary press for printing newspapers and the like, printing is performed by a blanket wound around a blanket cylinder transferring ink transferred from a printing plate wound around a plate cylinder while rotating to a running paper.

  Conventionally, as a method of wrapping and fixing a blanket or printing plate around a blanket cylinder or plate cylinder, a restraining groove is formed in the blanket cylinder or plate cylinder, and the holding side of the blanket or printing plate is hooked into the restraining groove, and the gripper side There is a known method for fixing. A fixing device for ensuring the fixing is disclosed in Patent Document 1. The fixing device of this patent document 1 presses a press-fitting body into a restraining groove (insertion groove) into which a holding side (leading end) and a holding bottom side (rear-end end) of the blanket are inserted, whereby the holding side and the holding side of the blanket. The bottom side is pressed against the wall surface of the restraint groove and fixed.

  However, it is not enough to fix the blanket or printing plate by simply press-fitting the press-fitting body. In particular, under the printing conditions in which the blanket cylinder or plate cylinder is rotated at a higher speed, the blanket or printing plate loosens and printing defects occur. There was a thing.

JP 2002-326341 A

  The problem to be solved by the present invention is to provide a fixing device capable of fixing a blanket or a printing plate more reliably without simplifying the mechanism and reducing the rigidity of the cylinder.

  The fixing device of the present invention is a blanket or printing plate fixing device for fixing a blanket or printing plate wound around a cylinder in a rotary press, and is formed on the cylinder, and the holding side of the blanket or printing plate is hooked and held. A constraining groove into which the butt side is inserted, a hook part formed or attached to the grip butt side of the blanket or the printing plate, and a hook or fixed to the hook part, and the grip butt side of the blanket or the printing plate is pulled into the restriction groove And a string-like body for applying a force in the direction to be applied to the hook portion.

  In the present invention, “cylinder” is a general term for a blanket cylinder and a plate cylinder.

  According to the present invention, the string-like body is hooked or fixed to the hook portion formed or attached to the holding butt side of the blanket or the printing plate, and the force in the direction in which the holding butt side is drawn into the restraining groove is added. The blanket or the printing plate can be more securely fixed without reducing the rigidity of the cylinder.

It is sectional drawing which shows 1st Example of this invention. 1 shows the configuration of the bottom end of a blanket in the first embodiment of the present invention. An example of the tension device used by this invention is shown, (a) is a top view, (b) is a side view, (c) is a perspective view. The other example of a tension | pulling apparatus is shown, (a) is a top view, (b) is a side view, (c) is a perspective view. The structure of the holding | paying bottom side of the blanket in 2nd Example of this invention is shown. A 3rd Example of this invention is shown, (a) shows the structure by the side of the holding end of a blanket, (b) is AA sectional drawing of (a). It is sectional drawing which shows 4th Example of this invention. The structure of the holding | grip bottom side of the blanket in 4th Example of this invention is shown. The bottom end side of the blanket in the fourth embodiment of the present invention is shown. The structure of the hook part in 4th Example of this invention is shown. It is sectional drawing which shows 5th Example of this invention.

  Embodiments of the present invention will be described below based on the embodiments shown in the drawings.

  FIG. 1 is a sectional view showing a first embodiment of the present invention. The fixing device of this embodiment fixes the blanket 10 to the blanket cylinder 20. A single blanket 10 having a width of two pages is wound around the blanket cylinder 20.

  The blanket 10 is a so-called metal blanket in which one side of a metal plate 11 is covered with a rubber-like blanket sheet 12 except for both end portions (the holding side 11a and the holding bottom side 11b), and the holding side 11a is covered with a blanket cylinder. The blanket body 20 is wound around the wall surface of the restraint groove 21 formed on the wall 20 and inserted into the restraint groove 21 by the gripper butt side 11b.

  FIG. 2 shows the configuration of the holding butt side 11b of the blanket 10. A hook portion 30 is formed to protrude from the center end 11b of the blanket 10 in the longitudinal direction, and a string-like body 40 is hooked on the hook portion 30. Then, the string-like body 40 applies a force in a direction in which the grip butt side is drawn into the restraining groove 21 to the hooking portion 30. For this purpose, in the present embodiment, one end of the string-like body 40 is fixed and the other end is connected to a tension device, and tension is applied to the string-like body 40 by the tension device. In addition, you may connect the both ends of the string-like body 40 to a tension device.

  FIG. 3 shows an example of a tensioning device, where (a) is a plan view, (b) is a side view, and (c) is a perspective view. The tension device 50 shown in the figure winds the string-like body 40 around a drum 51. The drum 51 is rotatably supported on the gantry 52. Further, an operation unit 53 made of a hexagon nut is fixed to the drum 51, and the drum 51 is rotated by inserting a hexagon wrench into the operation unit 53 and rotating it. By rotating the drum 51 clockwise, the string-like body 40 is wound around the drum 51 and tension is applied to the string-like body 40.

  The tension device 50 includes a ratchet drive mechanism including a pawl 54 and a pawl wheel 55. The pawl wheel 55 is fixed to the drum 51, and when the pawl 54 is engaged with the pawl wheel 55, the pawl wheel 55 and the drum 51 can rotate only in the clockwise direction (direction in which the string-like body 40 is wound up). It is. When the engagement between the pawl 54 and the pawl wheel 55 is released, the pawl wheel 55 and the drum 51 can rotate in either direction, and the application of tension to the string-like body 40 can be released.

  4A and 4B show another example of the tension device, where FIG. 4A is a plan view, FIG. 4B is a side view, and FIG. 4C is a perspective view. In the tension device 60 shown in the figure, a support member 62 in which a support shaft 62a and a support sleeve 62b are integrated is mounted between a pair of mounts 61, 61 so as to be rotatable around the axis of the support shaft 62a. In FIG. 4C, one of the pair of mounts 61, 61 is omitted.

  A through hole 62c is formed in the support member 62 in a direction orthogonal to the axial direction of the support shaft 62a, and the operating member 63 is inserted through the through hole 62c. A string-like body 40 is fixed to the distal end of the operating member 63, and a male screw is formed on the outer peripheral surface of the operating member 63. A nut 64 is screwed onto the male screw of the operating member 63 so as to face the support sleeve 62 b of the support member 62. Therefore, when the nut 64 is rotated in the tightening direction, tension is applied to the string-like body 40 via the actuating member 63, and when the nut 64 is rotated in the loosening direction, the tension applied to the string-like body 40 can be released.

  FIG. 5 shows the configuration of the holding bottom side of the blanket in the second embodiment of the present invention. In the first embodiment, the hook portion 30 is formed so as to project at one central position in the longitudinal direction of the gripper side 11b, but in this embodiment, it is formed so as to project at two symmetrical positions. In this way, by forming a plurality of the hook portions 30 symmetrically, it is possible to apply the force by the string-like body 40 uniformly over the entire bottom end side 11b.

  In the first and second embodiments, the hook portion 30 is formed on the holding butt side 11b. However, it may be attached to the holding butt side 11b by some fixing means.

  6A and 6B show a third embodiment of the present invention, in which FIG. 6A shows the configuration of the blanket at the bottom end of the blanket, and FIG. 6B is a cross-sectional view taken along line AA of FIG.

  In the present embodiment, the hook portion 30 formed in a circular arc shape whose upper surface is convex upward is mounted by the fixing pin 70 over the entire length in the longitudinal direction of the tail side 11b. Thus, by attaching the hook part 30 over the entire length in the longitudinal direction of the holding butt side 11b, the force by the string-like body 40 can be applied more uniformly over the entire holding butt side 11b.

  In the present embodiment, the hook portion 30 is attached to the holding butt side 11b by the fixing pin 70, but may be formed on the holding butt side 11b without using the fixing pin 70.

  FIG. 7 is a sectional view showing a fourth embodiment of the present invention. FIG. 8 shows the structure of the bottom end of the blanket in the fourth embodiment of the present invention.

  In this embodiment, the hook portion 30 is detachably mounted so as to cover the entire length in the longitudinal direction of the tail end side 11b. Specifically, as shown in FIG. 9, a plurality of engagement holes 11c are formed in the grip end 11b, and the engagement claws 31 formed on the upper end of the hook portion 30 are hooked in the engagement holes 11c. Thus, the hook portion 30 is detachably attached to the gripper side 11b.

  As shown in FIG. 10, the lower end portion of the hook portion 30 is bent upward, and the string-like body 40 is hooked on the bent portion.

  Also according to the present embodiment, the force by the string-like body 40 can be applied more uniformly over the entire bottom end 11b.

  In the present embodiment, the engagement hole is formed on the grip butt side 11b and the engagement claw is formed on the hook part 30, but the engagement claw is formed on the grip butt side 11b and the engagement hole is formed on the hook part 30. May be formed.

  FIG. 11 is a sectional view showing a fifth embodiment of the present invention.

  In the present embodiment, the hook portion 30 is formed by bending the lower end portion of the grip butt side 11b upward along the entire length, and the string-like body 40 is fixed to the hook portion 30. Also according to the present embodiment, the force by the string-like body 40 can be applied more uniformly over the entire bottom end 11b.

  In the drawings of the above embodiments, an example in which only one two-page width blanket is wound around the blanket cylinder is shown. However, the present invention is applied when two sheets of a two-page width blanket are wound along the axial direction of the blanket cylinder. Is also applicable. In this case, since each of the constraining grooves is formed by shifting the phase by 180 °, a tensioning device as shown in FIGS. 3 and 4 is provided at both ends of the blanket cylinder, and at the center of the blanket cylinder. For example, a concave portion that is slightly larger than the constraining groove is formed, and the end portion of the cord-like body is fixed by hooking a cord-like body having a thickened end portion into the concave portion.

  In addition, as a string-like body, a wire, a piano wire, etc. are mentioned, You may coat | cover these with resin.

  In the above embodiment, the case where the blanket is fixed has been described, but it is obvious that the printing plate can be fixed in the same manner.

DESCRIPTION OF SYMBOLS 10 Blanket 11 Metal plate 11a Holding side 11b Holding bottom side 11c Engagement hole 12 Blanket sheet 20 Blanket cylinder 21 Restraint groove 30 Engagement part 31 Engagement claw 40 String-like body 50 Pulling device 51 Drum 52 Base 53 Operation part 54 Claw 55 Claw Car 60 Pulling device 61 Mounting base 62 Support member 62a Support shaft 62b Support sleeve 63 Actuating member 64 Nut 70 Fixing pin

Claims (5)

A blanket or printing plate fixing device for fixing a blanket or printing plate wound around a cylinder in a rotary press,
A constraining groove formed on the cylinder, to which the holding side of the blanket or printing plate is hooked, and into which the holding bottom side is inserted;
A hook formed on or attached to the bottom end of the blanket or printing plate;
A blanket or printing plate fixing apparatus comprising: a string-like body that is hooked or fixed to the hooking portion and applies a force in a direction in which a gripper bottom side of the blanket or printing plate is drawn into the restraining groove.   The blanket or printing plate fixing device according to claim 1, wherein the hooking portion is formed or attached in a single or plural manner so as to protrude toward a holding edge of the blanket or the printing plate.   The hook portion is formed or mounted so as to protrude from the holding bottom side of the blanket or printing plate, and the upper surface thereof is formed in an upwardly convex arc shape over the entire length of the blanket or printing plate at the holding bottom side. The blanket or printing plate fixing device according to claim 1.   The hook is detachable over the entire length in the longitudinal direction of the blanket or plate end of the blanket or printing plate by hooking it into a plurality of engagement holes or claws formed on the bottom edge of the blanket or plate. The blanket or printing plate fixing device according to claim 1, which is mounted.   2. The blanket or printing plate fixing device according to claim 1, wherein the hook portion is formed by bending a lower end of the blanket or the printing plate at the bottom end of the holding plate upward over its entire length.

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