JP2616902B2 - Plate mounting aid - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an auxiliary tool for mounting a printing plate on a plate cylinder. In particular, the two substantially parallel sides of the plate are bent into appropriate shapes, and one side is engaged with a predetermined position of the plate cylinder and the plate is wound around the plate cylinder,
The present invention relates to an auxiliary tool for mounting a printing plate on a plate cylinder by tensioning the other side in a direction opposite to the direction of rotation of the plate cylinder by a plate tensioning means provided in a groove in the peripheral surface of the plate cylinder.

[0002]

2. Description of the Related Art One side of a printing plate provided in a groove of a plate cylinder peripheral surface, one side of which is engaged with a predetermined position of the plate cylinder and wound around the plate cylinder peripheral surface is connected to the other side of the plate cylinder. As a printing plate tensioning means for tensioning in a direction opposite to the direction of rotation, for example, a "forward / reverse rotation tightening device for a thin plate printing plate in a rotary press"
Japanese Utility Model Publication No. Sho 62-9100, "Plate Clamping Apparatus", Japanese Patent Publication No. Hei 2-193, "Printing Plate Mounting Apparatus", JP-A-5-4
The one disclosed in Japanese Patent Publication No. 2665 is known. Each has a configuration like the cross section shown in FIG. 4, FIG. 5, and FIG. For example, as shown in FIG. 7, an operation unit OP is provided in parallel with the axis of the plate cylinder, and an operation unit OP for tensioning the printing plate is provided on a side surface of the plate cylinder.

The plate tensioning means shown in FIGS. 4, 5 and 6 engages one side of the plate IP with the edge 52 of the groove 51 of the plate cylinder PC, and wraps the plate wound around the plate cylinder PC. IP
Is engaged with an engaging member 53 provided in a groove 51 provided on the peripheral surface of the plate cylinder PC. Then, the operation unit OP provided on the side surface of the plate cylinder PC is rotated in an appropriate direction, for example, in the direction of the arrow in FIG. 8, and the shaft 54 linked to the engaging member 53 is rotated and positioned. The plate IP is moved by the elasticity of the spring 55 via the toggle mechanism in the plate tensioning means shown in FIG. 4 and by the elasticity of the engaging member 53 in the plate tensioning means shown in FIGS. The printing plate IP is mounted on the plate cylinder PC by tensioning in the direction.

That is, when the plate IP is mounted on the plate cylinder PC, the other side of the plate IP is bent into the groove 51 of the plate cylinder PC while operating the operation unit OP provided on the side surface of the plate cylinder PC. There is a need to. When doing this alone, only a part of the printing plate on the other side in the width direction is pressed, and the insufficiently pressed part is lifted up by the elasticity of the printing plate. Caused impossibility.

Therefore, a device for automatically operating the operation unit for tensioning the printing plate by a voice response system is disclosed in "Voice Response Plate Clamping System", JP-A-3-23095.
No. 6 discloses this.

[0006]

[Problems to be Solved by the Invention] JP-A-3-2309
According to JP-A-56, the operator can press the printing plate with both hands when mounting the printing plate on the plate cylinder, so that the lifting of the printing plate due to the elasticity of the printing plate is eliminated. Can eliminate occurrences. However, since the printing plate tensioning means is automatically operated by a voice command, a voice recognition device is provided and linked to a drive mechanism, so that the manufacturing cost increases and the voice to the voice recognition device is increased. Registration was required and could not be activated except for the registered voice, which sometimes hindered emergency work.

SUMMARY OF THE INVENTION The present invention provides a simple and low-cost apparatus for mounting a printing plate on a plate cylinder by a single operator, without limiting the number of operators.

[0008]

Means for Solving the Problems The present invention provides

One side is engaged with a predetermined position of the plate cylinder, and the other side of the elastic printing plate wound around the plate cylinder is bent toward the plate tension means provided in the groove of the peripheral surface of the plate cylinder. A plate holding part having a surface for holding the plate, a handling part for pressing the plate holding part against the plate, and a plate surface for preventing deformation of the plate due to excessive holding of the plate holding part. A printing plate mounting aid, characterized by having a stopper portion abutting against

Is provided.

[0011]

The operator operates the plate mounting aid with one hand, using the handling portion as a clue, and engages one side with a predetermined position of the plate cylinder to form a plate on the other side of the plate wound around the plate cylinder. The pressing portion is pressed to deflect the other side of the plate against the plate tension means against its elasticity, and the plate tension means is operated with the other hand to mount the plate on the plate cylinder.

[0012]

Next, an embodiment of the present invention will be described with reference to the drawings.

FIG. 1 is a cross-sectional view showing a mode of use of a plate mounting aid 1 of the present invention, FIG.
FIG. 2 is an explanatory view showing a use mode of the printing plate attachment aid 1 shown in FIG. 1.

Reference numeral 1 denotes a printing plate mounting aid. When the printing plate mounting aid 1 mounts the printing plate IP on the plate cylinder PC, the printing plate IP
Is used to bend the other side, that is, a portion usually called the butt side, toward the plate tensioning means 50 provided in the groove 51 of the plate cylinder PC. A printing plate holding portion 11 that contacts and bends and a handling portion 12 that an operator holds for handling is provided.
Further, in the embodiment shown in the drawings, the posture of the plate mounting aid 1 during use is appropriately maintained so that the press of the plate IP is not excessive and does not give unnecessary deformation to the gripping side. A stopper 13 is provided, and a constant output spring mechanism B is provided to assist in reducing the weight of the plate mounting aid 1 and to prevent it from being lost.
L (see FIG. 3) is connected to the string-shaped body BL1.

The plate holding portion 11 is made of a synthetic resin having a low hardness and a light weight, for example, a polypropylene resin, so as not to damage the surface of the plate IP and in consideration of weight reduction of the plate mounting aid 1. The plate holding unit 11 is provided with a plate I
It is configured such that it can be held down in a continuous state or at multiple locations in the width direction of P.
The plate holding portion 11 has a distance L between both ends of the holding position (see FIG. 2) at least about half the width of the plate IP.
The stopper 13 is provided in an appropriate form while preventing damage to the plate IP by using a soft material at a portion that contacts the plate IP. The handling unit 12 is the printing plate holding unit 1
Part 1 may be processed and provided. HO is storage means for storing the plate mounting aid 1 when not in use.

According to the above configuration, first, one side of the plate IP, that is, a portion which is usually called a gripping side is connected to the plate cylinder PC.
The plate cylinder PC is rotated in the direction of the arrow in FIG. 3 and stopped at the position shown in FIG. 3 while supporting the edge 52 of the groove 51 in the direction indicated by the arrow in FIG.

Next, the printing plate mounting aid 1 is taken out from the appropriate storage means HO, and the printing plate IP is pressed in the mode shown in FIG.
The gripper side is bent toward the plate tensioning means 50, and the operating unit OP (see FIG. 7) provided on the side of the plate cylinder PC is rotated in the direction of the arrow with an appropriate tool to rotate the shaft 54. Move
The plate IP is mounted on the plate cylinder PC by hooking the edge of the plate IP to the engaging member 53 and tensioning the plate IP with the elasticity of the engaging member 53.

The storage means HO and / or the constant output spring mechanism BL are provided with a sensor for detecting that the plate mounting aid 1 is in the stored state, and when the plate mounting aid 1 is not in the stored state, It is preferable to provide a safety ensuring means for preventing the plate cylinder PC from rotating. The storage means O
H, the fixed output spring mechanism BL may be installed at another position, for example, at the front of the protector PR.

The present invention is not limited to the embodiment described above. For example, the shape of the plate mounting aid 1 may be the mechanism and shape of the plate tensioning means 50 or the side of the plate IP on the side of the holding edge. It may be appropriately changed according to the shape or the like, and includes design modifications that do not depart from the scope of the claims.

[0020]

According to the embodiments of the present invention, the plate can be easily mounted on the plate cylinder by the operator.

Further, as compared with the conventional voice response system, the construction is extremely simple, the manufacturing cost can be kept low, and the number of workers is not limited. Yes, work efficiency can be improved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view showing a use mode of a printing plate mounting aid according to an embodiment of the present invention.

FIG. 2 is a view taken in the direction of an arrow A in FIG. 1 showing a use state of the printing plate mounting aid of the embodiment of the present invention.

FIG. 3 is an explanatory diagram shown in FIG. 1 showing a use state of the printing plate mounting aid according to the embodiment of the present invention;

FIG. 4 is a cross-sectional view showing a configuration example of a plate tensioning means in the plate cylinder.

FIG. 5 is a cross-sectional view showing a configuration example of a plate tensioning means in the plate cylinder.

FIG. 6 is a sectional view showing a configuration example of a plate tensioning means in the plate cylinder.

FIG. 7 is a perspective view showing a configuration example of a plate cylinder.

[Explanation of symbols]

 DESCRIPTION OF REFERENCE NUMERALS 1 printing plate mounting aid 11 printing plate holding unit 12 handling unit 13 stopper 50 printing plate tension means 51 groove 52 edge 53 engaging member 54 shaft 55 spring PC plate cylinder OP operating unit IP printing plate BL constant output spring mechanism BL1 string Body HO Storage means PR protector

Claims (1)

(57) [Claims] 1. A resilient printing plate having one side engaged with a predetermined position of a plate cylinder and wound around the plate cylinder, and the other side of the resilient printing plate is bent toward a plate tensioning means provided in a groove in a peripheral surface of the plate cylinder. A plate holding part having a surface for holding the plate, a handling part for pressing the plate holding part against the plate, and printing for preventing deformation of the plate due to excessive holding of the plate holding part. A printing plate mounting aid, comprising a stopper portion abutting on a plate surface.