JPS59135160A - Transfer apparatus for printing curved surface - Google Patents

Abstract

PURPOSE:To provide the titled apparatus capable of transferring a thick film paste in a uniform thickness and good close adhesiveness, constituted so as to bring a transfer material into contact with an object to be printed under uniform pressure by the fluid pressure in a bag made of an elastomer. CONSTITUTION:A substrate (an object to be printed) 16 is fixed to a fixing apparatus by using a transfer material 14 constituted of thin plate shaped rubber and a bag 5 made of an elastomer and the transfer material 4 is pressed to the substrate 16 having a complicated curved surface or an abruptly curved surface under uniform pressure by utilizing the fluid pressure generated by fluid supply apparatus 9. A thick film paste can be transferred in a uniform thickness without deforming the shape thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is a curved surface printing method that can be suitably applied when transferring a thick film paste applied to a transfer body to the edge of a substrate of an electronic component such as a hybrid integrated circuit. The present invention relates to a transfer device.

Conventional structure and its problems Conventionally, when transferring a thick film paste to the edge of an electronic component board using a transfer body made of thin rubber, an apparatus and method as shown in Figure 1 was used. . That is, in Figure 1 (
1) A transfer body made of Fi thin plate-like rubber, on which thick film paste (2) of a predetermined shape is applied in a previous step. G) is a substrate to be printed, and (4) is a pressing body made of rubber having a fitting groove (4a).

Then, as shown in Fig. 1(a), place the transfer body (1) between the substrate (3) and the suppressing body), and then place the transferring body (1) between the substrate (3) and the suppressing body as shown in Fig. 1(b). The transfer body (1) and the substrate (3) are brought close together and fitted into the fitting groove (4a), the thick film paste (■) is pressed onto the substrate (■), and then the substrate (■) and the pressing body (3) are connected as shown in Fig. 1(e). (When 4 is returned to its original position, the thick film paste ■ adheres to the substrate ■, and the transfer is completed. However, in such a configuration, the force pressing the thick film paste ■ against the substrate a is
It is determined by the relationship between the width of the fitting groove (4a) in 4) and the thickness of the substrate (3), so if the groove width is narrowed to increase adhesion, the thickness of the thick film will be reduced as shown in Figure 2. The shape may collapse, the thick film paste may gather toward the edges, or cracks may occur.Also, if the groove width of the song groove (4a) is widened to avoid this phenomenon, the groove width will be widened as shown in Figure 3. In this case, the adhesion of the thick film paste becomes poor and the edges tend to curl around.In this way, with the conventional configuration, it is difficult to adjust the pressing force on both sides of the substrate, making it difficult to transfer a uniform thickness with good adhesion. It was difficult.

OBJECTS OF THE INVENTION In view of the above-mentioned conventional problems, an object of the present invention is to provide a transfer device for curved surface printing that can transfer thick film paste or the like with uniform thickness and good adhesion.

Structure of the Invention For this purpose, the present invention provides an elastic bag having a fluid flow hole therein, a fixing device for a printing object, and a thin rubber plate disposed between the elastic bag and the fixing device. and a fluid supply device that allows fluid to enter and exit the elastic bag through a fluid flow hole, and the transfer body is brought into contact with the printing target with uniform pressure by the fluid pressure inside the elastic bag. To provide a transfer device capable of performing transfer with uniform thickness without deformation.

DESCRIPTION OF EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 4 and 5. (5) I'i An elastic bag made of a thin rubber film, with a hollow interior and one membrane opening 6) for fluid inflow into the interior. V) is the fluid that has flowed into the elastic bag (5), which in this example is compressed air. This is a support that surrounds the elastic bag (5) except for the opening (8a) on one side of the awning. (2) is a fluid supply device that allows fluid to enter and exit the elastic bag 5) through the inlet and outlet (6), and connects the fluid supply source αO, such as an air compressor, to the fluid inlet and outlet (6). A liquid control device (12
1, a fluid discharge port 08), etc. Mouth 4
) is a transfer body made of a thin rubber plate placed opposite to the opening (8a) of the support (8), (b) is a thick film paste coated on the surface thereof, and α6) is a transfer member of this thick film paste μs. and an opening (8a) in the support body (8a) with the transfer body α→ sandwiched therebetween;
In other words, it is a fixing device for a substrate to be printed, α7) and a cage substrate α6), which are arranged opposite to the elastic bag (5).

Next, to explain the operation, first, the transfer body (141
A thick film paste 05) is printed on the transfer body, and then this transfer body is transferred to a support body (8) as shown in Fig. 4 using a suitable transfer device.
and the fixing device (5). Also fixation device (17)
Place and fix the K board (16). Next, the fluid σ) is supplied into the elastic bag 2 by the fluid supply device (9). Then, the elastic bag 6) swells due to the increase in the fluid (2), and the swollen elastic bag (51t/''i, as shown in FIG. is brought into close contact with the edge of the substrate α6). After the thick film paste 'Q5) is brought into close contact with the substrate α6), the fluid control device diagram is activated,
The fluid (7) in the elastic bag (5) is transferred to the fluid inlet/outlet (
6) into the atmosphere from the outlet 03). Then, the elastic bag (5) contracts and returns to its original state as shown in FIG. 4, completing the transfer. In this way, by using the elastic bag (5) and the fluid, the thick film paste can be transferred with a uniform predetermined pressure even to sharply curved surfaces such as complex curved surfaces and corners.

Effects of the Invention According to the transfer device for curved surface printing of the present invention, as is clear from the above description, since a transfer body made of thin rubber and an elastic bag are used, fluid is not contained in the elastic bag. By supplying fluid pressure, the transfer body can be pressed with uniform pressure even on complex curved surfaces or sharply curved surfaces, and the thickness of the print can be transferred evenly and with good adhesion. .

[Brief explanation of drawings]

Figures 1 to 3 show conventional examples, and Figure 1 (&) (1
)) (C) is a schematic configuration diagram showing the configuration of the transfer device and the transfer process; FIGS. 2 and 3 are illustrations of defects; FIGS. 4 and 5 show an embodiment of the present invention; Figure 4 is a vertical cross-sectional view, (9)
(121) is a fluid supply device, (121) is a fluid control device, (a4) is a transfer body, (μsun) is a thick film paste, (16) is a substrate (printing target). Q7) is a fixing device. Figure 7 (σ) Figure 2 Figure 3

Claims (1)

[Claims] An elastic bag having a fluid flow hole into the interior, a fixing device for a printing target, a transfer body made of a thin plate of rubber disposed between the elastic bag and the fixing device, and the elastic body. A transfer device for curved surface printing, comprising: a fluid supply device that allows fluid to enter and exit the bag through a fluid flow hole.