JPS6076430A - Method of manufacturing seat panel - Google Patents

Abstract

PURPOSE:To manufacture a back panel with high efficiency and prevent a dangerous edge from being produced by leaving only the connecting part of a raised flange as a continuous body, and finally severing the connecting part at a cutting part near a flange line. CONSTITUTION:To mold two back panels 6a, 6b at a time from a sheet of steel plate, the outer peripheries 8 of the connecting parts 7, 7 of each back panel 6a, 6b are left in recessed condition from the other parts respectively. Then, a flange 8 is raised by carrying out molding such as drawing and bending in a certain shape and beading, etc., cutting and drilling the outer periphery, and then, providing a lateral hole and a slit. Only the connected part 7 of the raised flange is left as a continuous body and, finally, the connected part 7 is severed at a cutting part 9 near a flange line.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an efficient manufacturing method of a back panel for a seat and a method for manufacturing a seat panel that eliminates the occurrence of dangerous edges.

In the conventional manufacturing method for seat panels, for example, when manufacturing multiple panels from a single steel plate, multiple parts are pressed into a press mold (
1) and then separate each panel (2
) The flange (3) on the edge is erected (see Fig. 1), which has the disadvantage of very low work efficiency. However, this method is safe because there is no edge touching 165 .phi. (indicated by a dashed-dotted line) as shown in FIG. 1(b). In order to improve work efficiency, if multiple (usually two) continuous pieces (4) are formed and each piece is cut after forming, the manufacturing efficiency is good, but sharp edges (5) occur as shown in Figure 2 (b). This method had a drawback because the diameter was 165 ■φ (indicated by a dashed dotted line), which would fail the safety standards.

Therefore, the present invention has made various studies to take advantage of the efficiency of the method of manufacturing a plurality of continuous bodies, and has made it possible to manufacture safe parts using this method. The method of the present invention is characterized by forming a plurality of seat panels from a single sheet of steel at once, leaving the outlines of the connecting parts of each seat panel in a state where they are spaced apart from each other, forming them into a predetermined shape, and cutting the outer periphery. , the flange was set up, leaving only the joint part as a continuous body, and finally cutting the joint part near the flange line.

A method of manufacturing a seat panel according to the present invention will be described in detail below with reference to illustrative drawings.

FIG. 3 is a front view showing how two large and small back panels (6a) and (6b) are manufactured simultaneously as a continuous body. FIG. 4 is an enlarged view of section P. Figure 5 is A in Figure 3.
- FIG. 6 is a cut end view showing the state of the A section when it is cut, and FIG. 6 is a cut end view of the B-B section.

As is clear from these figures, in order to form two back panels (6a) (6b) at once from one steel plate, the joining parts (7) (7) of each back panel (6a) (6b) are ) with the outer shell (8) kept apart from other parts, squeezed and bent into a predetermined shape, formed with beads, etc., cut the outer periphery, drilled holes, and then made horizontal holes.

Create a slit, stand the flange (8), leave only the joint part (7) as a continuous body, and finally cut the joint part (7) at the part (9) near the flange line (indicated by a chain line). It is cut with.

With this method, as shown in Figure 5,
This is because most of the flanges (8) do not have any edge parts. As shown in Figure 6, even if there is a slight edge part (5) at the joint part at 3-, this part is concave, so 1
It is safe and does not touch the 65moφ safety standard line. Therefore, it can be said that this is a useful invention that can improve productivity and provide safe products.

[Brief explanation of the drawing]

FIGS. 1(a) and 2(b) and FIGS. 2(a) and 2(b) are side views of main parts showing the state of conventional pack panel manufacturing. FIG. 3 is a front view showing how two large and small back panels (6a) and (6b) are manufactured simultaneously as a continuous body. FIG. 4 is an enlarged view of section P. Figure 5 is A in Figure 3.
- FIG. 6 is a cut end view showing the state of the A section when it is cut, and FIG. 6 is a cut end view of the B-B section. (1) Press type (2) Panel (3) Flange (4) Continuum (5) Edge (6a) (6b) Back panel (7)
Connecting part (8) Outer shell (9) Above the cut part near the flange line 4- Fig. 6

Claims (1)

[Claims] 1. When forming multiple seat panels at once from a single sheet of steel, the outlines of the connecting parts of each seat panel are left in a state where they are kept apart from each other and formed into a predetermined shape, the outer periphery is cut, and the flanges are set. A method for manufacturing a seat panel, characterized in that only the parts are left as a continuous body, and finally the connecting parts are cut near the flange line.