JPS624233B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to frame bonding of a metal plate in screen printing, and involves not directly bonding the metal plate to the frame, but indirectly bonding the metal plate to the frame using gauze as an intermediate. For gauze upholstery, scraps of cloth are arranged in a grid pattern around the frame.
(Arrangement includes temporarily fixing the edge lines in a grid pattern to the frame in tension.) A box-shaped blank part is formed by each edge line of the edge cut cloth arranged in a grid pattern. If necessary, tension wire, such as piano wire or fishing line, may be added to the end line to make it highly taut.

The tension of the edge wire is temporarily fixed to the frame (so that it can be peeled off when necessary), and the side edges of the metal plate are joined within the square shape. (Joining is using a permanent epoxy adhesive) Same end lines are joined to the frame.

Next, the edge cut fabric is pulled against the metal plate of the box-shaped joint on both the X and Y axes (pulling refers to pulling the gauze cloth together using a pneumatic gauze tensioner and joining it to the frame). This is a method of framing a metal plate with an intermediate body, which is characterized by joining together with the edge cut cloth and the frame that is in contact with it, or the overlapping parts of the cloth.

Conventionally, the method of making metal plates using this type of gauze as an intermediate has been called stencil printing, that is, screen printing, which has been called silk printing, stencil printing, and mimeographing. To print on mimeographed drawings or photographic paper, it is common to cut out a window in a separate piece of paper and paste the surrounding area to print, and an extension of this technique is This method is the same as the conventional method used today, in which a piece of gauze is stretched over a frame, the periphery of a metal plate is joined to the center of the gauze, and a window is cut out in the center of the gauze for printing.

To illustrate the conventional method, as shown in FIG. 1, the ends of a piece of gauze 2 are tensioned and fixed 3 to a frame 1. A metal plate 5 is brought into contact with the vicinity of the center 4, and the periphery 6 of the metal plate 5 is bonded to the gauze cloth 2 with an adhesive 7, and a window is cut out.

The structure of the metal plate 5 to be joined (the same applies in this case) will be explained.

The gauze 8 that serves as the support for the plate is made of stainless steel mesh or
It is a plate-like material made of Tetron gauze, and the gauze 8 is bound together with the printing plate part 9 using plating, and printing pattern holes 11 are formed in the printing plate by the etching plate-making method. (See Figure 2) Printing plates are used for printing by fixing a metal plate to a frame, or by stretching a frame of gauze cloth as an intermediate and bonding windows to the gauze cloth. The best possible tension is required, and by maintaining this tension, smooth movement of the squeegee 14 can be obtained.

In the conventional method of gauging a frame, the gauze cloth 2 is strongly pulled in all directions of the frame 1 and joined to the frame 1. The tension distribution of this gauze is weak at the center 4 for the following reason: the warp and weft threads, which are pulled in all directions, become intertwined and pull each other's legs, and as they move toward the center 4, they are worn out.

A metal plate 5 with no tension or no tension to be applied later is placed in the center 4 and its periphery 6 is bonded to the gauze 2 with an adhesive 7. 1st
See Figure, Figure 2.

In the metal plate 5 of the gauze center 4, the gauze overlaps. In order to remove this, a window shape is cut out along the joining edge 12 to form a printing plate.

At this time, the tension (balanced) held by the center gauze fabric that was cut out is lost, and the metal plate 5 takes over, absorbing the tension of the intermediate body and creating a new gauze fabric 2 to maintain balance. The tension of is attenuated.

As a printing defect, as shown in FIG. 3, the printing operation of the printing tool squeegee 14 is a reciprocating movement of the printing movement from A to A' direction and its return.

During printing, a squeegee 14 is used to fill the pattern holes 11 with the ink 13 and leave no excess ink.
presses the metal plate 5 downward (toward the printing surface) and slides it while scraping off excess ink.

In manual printing, there is a risk of the adhesive 7 sometimes colliding with the end corner of the joint 12 on the A' side by crossing the printing width, and if this happens repeatedly, the adhesive 7 may peel off.

In this invention, the conventional one-piece gauze cloth is abolished, and four pieces of edge-cut cloth are used instead.It is possible to add tension to the metal plate itself joined to this, and it is possible to maintain this tension and hang the frame. It is characterized by making it possible.

This will be explained with an example.

The cut-off cloth for the frame may be gauze cloth for screen plates, cloth for starting clothes, wire mesh, film, metal plates, etc., depending on the purpose. For example, if clay, cement, etc. are used as the ink material, metal plates are used.

This case will be explained using Tetron gauze for the screen version.

FIG. 4 explains the Y-axis as the first step in arranging the cut cloth on the frame 25 in a grid pattern in the X-axis and Y-axis directions.

The Y-axis end cut cloths 21 and 22 are placed down. The end lines 26 and 27 are pulled and temporarily fastened 31 by a gauze tensioner 30 (schematically shown), leaving a width for joining the metal plate 35 in parallel and in the middle of each other. (Hereinafter, the term “hippari” means that a gauze tensioner is used.) Therefore, the end line 26,
27 are both in a tense state, but the tension does not work until the remaining part.

Subsequently, the end line 26 on one side and the end line 27 on the other side are bonded and hardened to both ends 36 of the metal plate 35.

The edge cut cloth 21 and the edge cut cloth 22 are in a position that matches each other with the metal plate 35 as the center, and the width 3 where the square shape 34 is joined is formed.
2 is joined 41 to the pull frame 25.

Next, in Fig. 4, the position of the
When the end cut cloths 23 and 24 of the shaft are made parallel and joined in a cross-shaped position 20, the result shown in FIG. 5 is obtained.

That is, the edge lines 28 and 29 are temporarily fastened 3 to the frame 25 by aligning the width interval forming the square shape 34 with the metal plate 35 in the X-axis direction.
Do 1. Next, the square position (the metal plate is already joined to the end lines 26, 27). The end lines 28 and 29 are joined to the edges 33 on both sides of the metal plate.

Similar to the cut-off cloths 21 and 22 in FIG. 4, the cut-off cloth 23
and 24 face each other and pull the metal plate 35 as the center to join the width 37 to the frame 25 (42).

The metal plate 35 is strongly pulled in the X-axis and Y-axis directions by the sides 33 and 36, so that the tension is balanced.

Along with joining the metal plate 35, the remaining edge cloth 40 is joined to the frame corners 39, 40, etc., and the end lines 26, 27, 28, 29, etc. are also joined to the overlapping mating cloth surfaces. By finishing the process, the frame of the metal plate is completed.

The disadvantage of the previously mentioned conventional single-piece gauze cloth with a window made and a metal plate bonded to it is that at the end of the squeegee action, the edge of the window-punched gauze cloth is on the upper side of the metal plate. It is impossible to change the position of this part to the lower side by opening a window in one piece of gauze, and the final gauze end joint on the upper side protrudes and there is a risk of collision with the squeegee.

In this case, it is possible to freely rearrange the arrangement order of the cut cloths with respect to the frame 25.

As shown in FIG. 7, the arrangement order is changed as follows. First, place the edge cut cloth 24 on the frame 25 and draw the edge line 29.
Tightly tighten and temporarily tack 31. At the square 34 position of this line, the metal plate 35
Join 6.

Next, the cut cloths 21 and 22 are placed in the Y-axis direction, and their end lines 26 and 27 are placed on top of the edge of the metal plate 35 and joined.

Next, the edge line 28 is attached to the side edge 33 of the metal plate 35, and the remaining fabric is disposed of as described above, so that the joining point that collides with the squeegee during printing is on the metal plate. You can easily print without worrying about it getting caught on the bottom side.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a conventional method of gauging metal plates as seen from the squeegee side. Figure 2 is a cross-sectional view of the metal plate. FIG. 3 is a cross-sectional view of FIG. 1 and is a schematic diagram showing the operating status of squeegee printing. Figure 4 and the following are related to the present invention. FIG. 4 shows the arrangement of the cut cloth in the frame. Part 1 is a perspective view showing the joining of end lines and the joining near the side of the metal plate in the Y-axis direction. FIG. 5 is a perspective view of the situation in which the X-axis end cut cloth is joined to the metal plate following FIG. 4. FIG. 6 is a perspective view of the situation in which the grid arrangement order has been changed and one side of the metal plate is placed on the squeegee side. Explanation of figure number, 20... parallel cross-shaped. 21, 22, 23,
24...Scrap cloth. 25...Frame. 26, 27, 28, 2
9... Edge line. 32...Width. 33...side. 34...Masugata.
35...Metal version. 36...side. 37...Width.

Claims (1)

[Claims] 1 Arrange the edge cut fabrics in a grid pattern around the frame, join the side edge of the metal plate to the edge line of the box shape, join the same edge line to the frame, and tighten the remaining edge fabric to the frame and the overlap between the fabrics. A metal plate framing method characterized by joining.