JPS63202450U - - Google Patents

Description

[Brief explanation of the drawing]

FIG. 1a is a front view of an embodiment of the upper mold according to the present invention, FIG. 1b is a cross-sectional view of the lower mold according to the present invention shown in FIG. 2b, taken along the line AA, and FIG. Figure 1a
FIG. 2b is a plan view of an embodiment of the lower mold according to the present invention, and FIGS. 3a and b respectively show the first convex member fixed to the upper mold according to the present invention. A front view and a bottom view of the specific example, FIG. 4a is a plan view of a concave member fixed to the lower mold corresponding to the convex members shown in FIGS. 3a and b, and FIG. 4b is a diagram of FIG. 4a 5A and 5B are respectively a front view and a bottom view of a second specific example of a convex member fixed to an upper die according to the present invention,
Figure 6a is a plan view of a concave member fixed to the lower mold corresponding to the convex member shown in Figures 5a and b, and Figure 6b is a line FF of the concave member shown in Figure 6a. 7a and b are respectively a front view and a bottom view of the third specific example of the convex member fixed to the upper mold according to the present invention, and FIG. 8a is a cross-sectional view of FIGS. FIG. 8b is a plan view of the concave member fixed to the lower mold corresponding to the convex member shown in FIG. 8b, a sectional view of the concave member shown in FIG. 10b is a front view and a bottom view of the conventional upper mold, respectively, FIG. 10a is a cross-sectional view of the conventional lower mold shown in FIG. 10b taken along line B-B, and FIG. 10b is the conventional lower mold. Plan view, 11th
The figure is a cross-sectional view of the rotary solenoid, Figure 12a
and b are a plan view and a front view of the movable plate used in the rotary solenoid shown in FIG.
Fig. 2c is a plan view of the ball race showing an enlarged shape of the ball race of the movable plate shown in Fig. 12a, and Fig. 12d is a Y- plane view of the ball race shown in Fig. 12c.
Y sectional view, FIG. 12e is a XX sectional view of the ball race shown in FIG. 12c. 1... Main body part (upper mold), 2... Convex member (piece),
3, 6... Bolt, 4... Main body (lower mold), 5...
...Concave member (piece).

Claims (1)

[Claims for Utility Model Registration] 1. Comprised of an upper die and a lower die, by sandwiching and pressing a plastic plate between the pressing surface of the upper die and the pressing surface of the lower die, the plastic plate is pressed. In a ball race molding die for forming a ball race on a pressed surface, the upper mold has a plurality of recesses along the circumferential direction of a circle having approximately the same radius on the pressing surface of the main body having the pressing surface. A convex member is inserted into each of the plurality of recesses and removably fixed by a fixing means, and each of these convex members has substantially the same shape when fixed to the main body. The lower mold has a convex portion whose radial cross-sectional shape is approximately semicircular and protrudes from the pressing surface of the main body along the circumferential direction of a circle with a radius of . Large recesses are provided on the pressing surface at positions corresponding to each of the plurality of recesses on the pressing surface of the main body of the upper die, and further, a recessed member corresponding to the convex member is inserted into each of these large recesses. When fixed, each of these concave members is inserted into the concave part of the main body of the upper mold and is removably fixed by a fixing means, and the concave members are inserted into the convex part of the fixed convex member. A mold for molding a ball race, characterized by having a corresponding small recess. 2. The ball race mold as set forth in claim 1, wherein the fixing means is a bolt.