JPS6380045U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1 is a composite half-cut diagram of the mold device showing the conditions immediately before and during the molding process, and Figure 2 is the same as in Figure 1.
The line sectional view is a half-cut diagram showing only the right side of the bilaterally symmetrical structure, FIG.
FIG. 5 is a cross-sectional view showing the apparatus according to the embodiment for molding the cylindrical finished product shown in the figure, and is a half-cut view showing only the right side of the bilaterally symmetrical structure.
FIG. 6 is a line sectional view, and is a half-cut composite view showing the open and closed states of a pair of core metal half members; FIG.
Figure 7 is a bottom perspective view of a workpiece that is the raw material for a cylindrical finished product, Figure 8 is a cross-sectional view of a conventional device before forming, and Figure 9 shows the apparatus shown in Figure 8 during forming. FIG. 2... Upper die, 2A, 5A... Recess, 5... Lower die, 6... Split mold, 9... Cam member, 12, 2
2... Core metal member, 13, 33... Cylinder, 36
... Core metal half member, 37 ... Drive cam rod, 51, 6
1... Cylindrical finished product, 52... Dovetail part, 53...
...Workpiece, 54...Edge, 54A...Yes, 5
4B...Dovetail groove.

Claims (1)

[Claims for Utility Model Registration] (1) A core member to be inserted into a workpiece having dovetail grooves formed on opposing edges, and a cylindrical finished product of the workpiece. an upper die which has a recessed part having a shape corresponding to the outer shape, and which presses the workpiece together with the core metal member by pushing the workpiece into the recessed part, thereby turning the dovetail groove into a dovetail part and crimping; In the mold apparatus configured with a lower die, the lower die is configured with a pair of split dies that can be opened and closed with respect to the workpiece, and the split dies are closed by a cam member that descends together with the upper die. A mold device characterized by: (2) In paragraph 1 of the claims for utility model registration,
The outer surface of the core metal member is provided with a recess for forming a convex part that protrudes inward on the inner surface of the cylindrical finished product, and the core metal member is divided by a dividing surface extending in the axial direction of the cylindrical finished product. 1. A mold device comprising a pair of core metal half members, the distance between the pair of core metal half members being changed by a drive cam rod inserted into the core metal member.