JP2577396Y2 - Plate making and printing equipment - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stencil printing machine capable of making a stencil sheet, winding the stencil sheet around a plate cylinder, and performing stencil printing.

[0002]

2. Description of the Related Art In a conventional stencil printing apparatus shown in FIG. 6, a stencil sheet 100 is conveyed by sandwiching it between a thermal head 101 and a platen roller 102 to perform stencil making. The perforated stencil sheet 100 is temporarily stored in the lower stencil stock section 103 below. Pre-printed stencil sheet 1 temporarily stored
The sheet No. 00 is sent out to the plate cylinder (not shown) by the feed roller 104 as necessary, and is mounted on the plate cylinder and used for printing.

[0003]

When the stencil sheet is set in the apparatus, the stencil sheet 100 is moved to the thermal head 101.
After passing between the platen roller 102 and the platen roller 102, it is necessary to insert the leading end into the feed roller 104.

[0004] However, there is not enough space on the introduction side of the feed roller 104, and it is difficult to insert the stencil paper 100 into the feed roller 104 by grasping the leading end of the stencil sheet 100 that is soft and easily bent.

The inventors of the present application considered providing a plate for guiding the leading end of the stencil sheet to the feed roller 104 on the introduction side of the feed roller 104. However, since this portion corresponds to the entrance of the base paper stock section 103 below, However, such a member cannot be provided.

The present invention provides a stencil printing apparatus having a stencil sheet stock section of a stencil sheet made between a stencil making means and a feed roller so that the leading end of the stencil sheet can be easily inserted into the feed roller when setting the stencil sheet. It is intended to be.

[0007]

The stencil printing apparatus of the present invention comprises a stencil making means for sandwiching and transporting a stencil sheet, and an openable / closable pressure plate for opening a holding portion of the stencil sheet to hold the stencil sheet. A stencil stock unit that stores the stencil stencil sheet sent from the stencil unit, a feed roller that sends out the stencil sheet that has been stencil stored in the stencil stock unit, and a stencil sheet that is sent out by the feed roller. In a stencil printing machine provided with a plate cylinder on which a stencil sheet is mounted to perform stencil printing, the stencil sheet is set to the introduction side of the delivery roller when the pressure plate is opened, and is sent into the stencil stock section when the pressure plate is closed. A guide plate interlocking with the opening and closing of the pressure plate is provided so that the guide plate is set at a position that does not interfere with the stencil sheet.

[0008]

When the stencil sheet is set, the pressure plate is released. The holding portion of the plate making means is opened, and a guide plate interlocking with the pressure plate is set on the introduction side of the delivery roller. After the stencil sheet is passed through the holding portion of the stencil making means, the leading end of the stencil sheet is inserted into a feed roller via a guide plate. The platen is closed during plate-making printing. The guide plate interlocked with the pressure plate is set at a position where the guide plate does not interfere with the stencil sheet that is made and sent to the stock paper stock section.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment will be described with reference to FIGS. As shown in FIG. 1, the plate-making printing apparatus 1 includes a plate-making means 4 including a platen roller 2 and a thermal head 3. In the figure, reference numeral 6 denotes a guide plate for guiding a strip-shaped base paper 5 drawn from a roll-shaped stencil sheet 5 (hereinafter referred to as base paper 5). The platen roller 2 is adjacent to the guide plate 6. It is provided so as to be rotationally driven by a pulse motor (not shown). In the figure, reference numeral 7 denotes a pressure plate which is attached to the frame of the apparatus via a shaft 8 so as to be openable and closable. The thermal head 3 is provided on the pressure plate 7.

In order to sandwich the base paper 5 between the portions where the thermal head 3 and the platen roller 2 are sandwiched, the pressure plate 7 may be opened. Then, when the pressure plate 7 is closed, the thermal head 3 and the platen roller 2 come into contact with each other, so that the stencil sheet 5 sandwiched between the thermal head 3 and the platen roller 2 can be conveyed to perform thermal plate making.

In the conveying direction of the base paper 5, an entrance 10 of the base paper stock unit 9 is opened next to the plate making means 4. The stencil stock unit 9 is a box-shaped member for temporarily storing the stencil 5 having been made, and is disposed below the stencil making means 4.

On the side opposite to the plate making means 4 across the entrance 10 of the base paper stock section 9, an upper roller 11a
And a feed roller 11 composed of a pair of a lower roller 11b and a lower roller 11b on the driving side. The delivery roller 11 is
This is a member that sends out the pre-processed base paper 5 in the base paper stock unit 9 toward the plate cylinder.

The lower roller 11b is mounted on the frame of the apparatus, and is divided into three parts in the axial direction as shown in FIG. The lower roller 11b is driven to rotate clockwise in the figure by a motor (not shown). The upper roller 11a is attached to the pressure plate 7, and is axially divided into three parts corresponding to the lower roller 11b. Between the upper roller 11a and the lower roller 11b, there are provided an upper introduction plate 12a and a lower introduction plate 12b having cutouts corresponding to the roller portions.

The plate making means 4 and the delivery roller 11
Between them, a guide plate 13 for guiding the base paper 5 to the feed roller 11 is provided. The guide plate 13 has an elongated rectangular shape. A base end of the guide plate 13 is supported by a shaft 11c of a lower roller 11b of the feed roller 11, and a tip end portion of the guide plate 13 swings between the feed roller 11 and the plate making means 4. Both ends of the distal end of the guide plate 13 are connected to the frame of the apparatus by springs 15 and are pulled upward. As shown in FIGS. 1 and 2, the guide plate 13 is urged upward and abuts on a portion 20 of the frame when there is no interference from other members, and at a predetermined position on the introduction side of the delivery roller. Has stopped. At this predetermined position, the surface of the guide plate 13 is substantially horizontally continuous between the upper and lower introduction plates 12a and 12b. Accordingly, if the leading end of the base paper 5 is slid along the surface of the guide plate 13 at the predetermined position, the leading end of the base paper 5 can be inserted between the upper and lower rollers 11a and 11b of the feed roller 11.

A pair of pressing projections 16 are provided on the lower surface of the pressure plate 7. When the pressure plate 7 is released, the pressing projection 16 does not interfere with other members, so that the guide plate 13 is pulled up by the spring 15 and
1 is set at a predetermined position on the introduction side.

When the pressure plate 7 is closed, the pressing projection 16 comes into contact with the guide plate 13 from above. When the pressure plate 7 is closed against the force of the spring 15 that pulls up the guide plate 13,
The guide plate 13 is swung downward to move the base paper stock 9
Get inside. That is, the entrance 10 of the base paper stock unit 9
Is released, and the stencil sheet 5 made by the stencil making means 4 can enter the stencil stock section 9 and can be sent out from the stencil stock section 9 by the feed roller 11.

In this embodiment, the arrangement of parts, frame design, and the like are devised, and the space in the apparatus is effectively used to reduce the size. For this reason, the base paper stock unit 9 is not a simple rectangular tube shape but a deformed substantially trapezoidal shape as shown in FIG.
Seven are done. Such a step 17 is not preferable because the base paper 5 is easily caught when the base paper 5 is taken in and out.
The guide plate 13 of this embodiment also eliminates such a problem.

That is, as shown by an imaginary line in FIG.
Is closed, the guide plate 13 is set at a position covering the step portion 17. Therefore, the base paper 5 entering and leaving the base paper stock unit 9 is guided by the guide plate 13 and does not get caught on the step 17.

Next, next to the delivery roller 11,
The plate cylinder 18 is rotatably provided with a cutter portion 42 including a fixed blade 40 and a rotary blade 41 interposed therebetween. A clamp plate 19 is provided on a part of the outer peripheral surface of the plate cylinder 18 along the axial direction, so that the leading end of the fed base paper 5 can be clamped and fixed. After the leading end of the base paper 5 is fixed by the clamp plate 19, the plate cylinder 18 is rotated clockwise in FIG. Attached to the surface. Then, just before the transfer and winding of one plate of the base paper 5 to the plate cylinder 18, the base paper 5 is cut by the cutter unit 42. After that, the printing paper sent from a paper feeding device (not shown) is
Printing is performed by nipping and transporting the rotating plate cylinder 18 and a press roller (not shown).

Next, the operation of the above configuration will be described. Prior to plate making, first, the pressure plate 7 is opened to initialize the base paper 5. Thermal head 3 of plate making means 4
Is lifted upward together with the pressure plate 7, and a portion held between the platen roller 2 and the platen roller 2 is released.

The guide plate 13, which has been pressed by the pressing projection 16 of the pressure plate 7, is lifted by the force of the spring 15 and is set at a predetermined position on the introduction side of the feed roller 11.

The base paper 5 is passed over the platen roller 2, and the leading end of the base paper 5 is slid on the upper surface of the guide plate 13.
Is very easily introduced between the upper and lower rollers 11a and 11b of the delivery roller 11.

Next, the pressure plate 7 is closed. The base paper 5 is held between the thermal head 3 and the platen roller 2. The guide plate 13 is pushed down by the pressing protrusion 16 of the pressure plate 7 and is set at a predetermined position to cover the step 17 in the base paper stock unit 9.

If plate making is performed here, the thermal head 3
Stencil 5 made by the platen roller 2 and nipped and conveyed
Is smoothly fed into the stencil stock section 9 without being caught on the guide plate 13. The base paper 5 on the plate cylinder 18
When the paper is wound, the feed roller 11 feeds the pre-processed stencil 5 in the stencil stock unit 9 toward the plate cylinder 18, and the stencil 5 to be fed is guided by the guide plate 13 and moves smoothly, and It does not catch on the step 17 inside.

Next, a second embodiment will be described with reference to FIGS. The plate-making printing apparatus 31 of the present embodiment includes a guide plate 32
Except that the structure of the pressure plate 33 is different from that of the first embodiment. The same parts as those in FIGS. 1 and 2 are denoted by the same reference numerals, and description thereof will be omitted. Next, the guide plate 32 and the pressure plate 33 will be described.

The shape of the guide plate 32 and the position of the support shaft are the same as in the first embodiment. Arms 35 are provided at both ends of the guide plate 32, and the arm 35 and the pressure plate 33 are linked and connected by a link 36.

As shown in FIG. 3, when the pressure plate 33 is released, the guide plate 32 is interlocked with the pressure plate 33 via the link 36 and the arm 35. The guide plate 32 is set at a position where the leading end of the base paper 5 is easily guided to the feed roller 11.

As shown in FIG. 4, when the pressure plate 33 is closed, the guide plate 32 is interlocked with the pressure plate 33 via the link 36 and the arm 35. The guide plate 32 is set at a predetermined position so as to cover the step 17 in the lower stencil stock unit 9, and the plate-making stencil 5 sent into the stencil stock unit 9.
No longer interfere with

The operation and effect of this embodiment whose description is omitted are as follows.
This is the same as the embodiment. In each of the embodiments, the base paper 5 is fed by the combination of the thermal head 3 and the platen roller 2. However, apart from the plate making means 4, a roller for feeding the base paper 5 toward the base paper stock unit 9 may be provided. Good.

[0030]

According to the present invention, since the guide plate which opens and closes in conjunction with the pressure plate is provided between the plate making means and the feed roller, the initial setting of the base paper by opening the pressure plate becomes extremely easy. .

[Brief description of the drawings]

FIG. 1 is a sectional view of a first embodiment.

FIG. 2 is an enlarged perspective view of a main part of the first embodiment.

FIG. 3 is a sectional view of a second embodiment.

FIG. 4 is a sectional view of a second embodiment.

FIG. 5 is an enlarged perspective view of a main part of the second embodiment.

FIG. 6 is a sectional view of a conventional plate-making printing apparatus.

[Explanation of symbols]

 1, 31 plate making and printing apparatus 4 plate making means 5 stencil paper (base paper) 7, 33 pressure plate 9 base paper stock unit 11 feed-out rollers 13, 32 ... guide plate 18 plate cylinder

Claims (1)

(57) [Scope of request for utility model registration] 1. A stencil making means for sandwiching and transporting a stencil sheet to make a stencil, an openable and closable pressure plate for opening a holding portion of the stencil sheet to sandwich the stencil sheet, and a stencil sheet sent from the stencil making means. A stencil stock unit for storing stencil paper, a delivery roller for sending out stencil stencils stored in the stencil stock unit, and a plate cylinder on which the stencil stencils sent by the delivery rollers are mounted to perform stencil printing. When the pressure plate is opened, the plate making printing device is set to the introduction side of the feed roller, and when the pressure plate is closed, it is set to a position that does not interfere with the stencil sheet that has been made into the stencil sheet sent into the base paper stock unit. And a guide plate interlocked with opening and closing of the pressure plate.