JPH0225765B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention makes it possible to reduce weight by recessing the back side and making the overall thickness thinner, and also to integrally mold letters and pictures such as trademarks on the back side. The present invention relates to a mold for manufacturing clothing buttons that allows for.

[Conventional technology]

Conventionally, this type of manufacturing mold has been known to consist of a single upper mold that moves up and down and a lower mold that is divided into two that moves back and forth in the left and right directions.

[Problem that the invention seeks to solve]

When using the conventional mold mentioned above, it was impossible to dent the back side in order to move the two-split lower mold back and forth in the left and right directions, so it was necessary to make the entire wall thinner and to write trademarks or other characters or pictures on the back side. It is impossible to mold them in one piece, and methods such as cutting are known as methods for making this impossible possible, but these methods are unsuitable for mass production and are relatively expensive, so they are not preferred. There were defects such as missing.

[Means of trying to solve the problem]

In the present invention, a convex mold that forms a concave portion on the back side of the finished product is integrally provided on the upper surface of the fixed lower mold, and a ring stopper is attached to the finished product that penetrates the upper and lower surfaces of the convex mold in the center of the convex mold. A hole-shaped mold that forms an upright stand is created, and a horizontal hole is further drilled in the fixed lower mold and the piece body, with both ends open to both sides of the fixed lower mold and whose upper surface touches the lower surface of the hole-shaped mold. At the same time, a pair of movable lower molds are provided on both sides of the fixed lower mold, which move forward and backward toward the same fixed lower mold, and these two movable lower molds move forward and backward together with the two movable lower molds in the horizontal holes mentioned above. When moving forward, a pair of pin-shaped molds whose front end surfaces closely abut each other at the lower center of the hole-shaped mold are fixed,
These lower mold devices are constructed by drilling a pair of grooves on the front end surface of the bottle-shaped molds to form a groove mold for forming a retaining ring when they come together when they collide. It consists of an upper die device with a concave mold that matches the shape and size of the front side of the finished product at a location corresponding to the upper surface of the piece, and when the lower die device and the upper die device are in a mold matching state. By making the outer peripheral surface of the opening edge of the concave mold come into close contact with the top surface of the piece body, the back side can be concave to make the whole thinner, and it is also possible to integrally mold letters and pictures such as trademarks on the back side. This has been made possible.

〔Example〕

In the embodiment shown in the figure, a recess 3 is provided on the upper surface of a fixed lower mold 2 fixed to a mold base 1, and a piece body 4 is provided in this recess 3.
A recessed part 5 is formed on the back side of the finished product A, which is fitted so as to be replaceable by inserting and removing it, and has a concave-convex pattern A' on the front side and a concave-convex character A'' on the back side on the upper surface of the piece body 4. A convex mold 6 is integrally provided, and a hole-shaped mold 8 is provided in the center of the convex mold 6 to form a stopper stand 7 in the finished product, penetrating the upper and lower surfaces of the convex mold 6. Furthermore, a horizontal hole 9 is formed in the fixed lower mold 2 and the piece body 4, with both ends open to both sides of the fixed lower mold 2 and whose upper surface is in contact with the lower surface of the hole-shaped mold 8. A pair of movable lower molds 10 and 10' are provided which face the fixed lower mold 2 and move forward and backward along the mold base 1. A pair of pin-shaped molds 12, 12 move forward and backward together by fixing with movable lower molds 10, 10' and screws 11, and when moving forward, their front end surfaces closely abut each other at the lower center of the hole-shaped mold 8. A pair of concave grooves 1 are fixed to the pin-shaped molds 12 and 12', and when they collide with the front end surfaces of the pin-shaped molds 12, 12', they combine to form a groove mold 14 for forming the retaining ring 13.
5, 15' constitutes a lower mold device 16 for die casting, and this lower mold device 1
Separately from 6, an upper mold device 19 for die casting is constructed, which has a concave mold 18 on the lower surface corresponding to the upper surface of the piece body 4, which matches the shape and size of the front surface of the finished product A. The outer peripheral surface of the opening edge 20 of the concave mold 18 comes into close contact with the upper surface of the piece body 4 when the lower mold device 16 and the upper mold device 19 are brought into the mold matching state.

It should be noted that the explanation of the drive device, sprue, etc. of the above embodiment is the same as that of the conventional one, and will therefore be omitted.

[Effect]

Since the present invention has the above-described configuration, first, the movable lower molds 10 and 10' are advanced to form the groove mold 14, and then the upper mold device 19 is lowered to form the groove mold 14.
9 and the lower mold device 16 to form a cavity 21, and then the die casting melt is poured into the cavity 21 and is cooled and fixed, and the upper mold device 19 is raised. After this, the movable lower molds 10, 10' are set in a retracted state, and the molded product (finished product) is removed from the cavity 21 in this state. That is, as is clear from the usage and drawings, the movement of the upper die device 19 and the lower die device 16 is due to the integral molding of the uneven pattern A' on the front side and the uneven character A'' on the back side of the finished product A. This makes it possible to perform the integral molding without interfering with the process.

〔Effect of the invention〕

Since the present invention is as described above, the effect of completely achieving the provision of a mold that makes it possible to reduce the weight by recessing the back side and to integrally mold characters and pictures such as trademarks on both the front and back sides is achieved. Moreover, when the mold of the present invention is used, it has the effect of making it possible to mass-produce and reduce the cost of clothing buttons that are lighter due to thinner walls and have uneven patterns and letters on both the front and back sides. If the piece bodies are made interchangeable, as in the case where you want to obtain a finished product with a different pattern or character, it is not only possible but also different from the conventional method by replacing the separately prepared piece bodies. When changing molds to obtain a finished product, it was necessary to center and mark the mold each time, resulting in poor work efficiency and a lot of time loss.
The present invention has the advantage that it is possible to obtain different finished products by exchanging the piece bodies without centering or marking, and has the advantage that the work efficiency is very high and there is little loss of time. If related scratches or dents occur, the entire lower mold becomes defective, but the present invention has excellent effects such as the convenience of being able to use the rest as is by replacing only the piece body. It is.

[Brief explanation of drawings]

The figures show an embodiment of a mold for producing a button for clothing according to the present invention.
The figure is a plan view of the lower die device, Figure 3 is a sectional view taken along the line A-A in Figure 2, Figure 4 is an exploded perspective view of the main parts, and Figure 5
The figure is a perspective view of the finished product seen from the front side, and FIG. 6 is a perspective view of the finished product seen from the back side. 1... Mold pace, 2... Fixed lower mold, 3... Recess, 4... Piece body, 5... Concave part, 6... Convex mold,
7... Retaining ring standing stand part, 8... Hole mold, 9... Horizontal hole, 10, 10'... Movable lower mold, 11... Screw,
12, 12'...Pin-shaped type, 13...Retaining ring, 14
...Groove type, 15, 15'...Concave groove, 16...Lower mold device, 18...Concave mold, 19...Upper mold device, 20
...Opening edge, 21...Cavity, I...Finished product, I'...Irregular pattern, I''...Irregular characters.

Claims (1)

[Scope of Claims] 1. A convex mold that forms a concave portion on the back side of the finished product is integrally provided on the upper surface of the fixed lower mold, and a ring stopper standing portion is formed in the center of this convex mold for the completed product. A hole-shaped mold with its upper and lower ends penetrating both upper and lower surfaces of the convex mold, and a hole-shaped mold with both ends open to both sides of the fixed lower mold and a hole-shaped upper surface between the fixed lower mold and the piece body. A horizontal hole is bored in contact with the lower surface of the mold, and a pair of movable lower molds that move forward and backward toward the fixed lower mold are provided on both sides of the fixed lower mold.
These two movable lower molds are provided with a pair of pin-shaped molds that move forward and backward together with the two movable lower molds in the above-mentioned horizontal holes, and whose front end faces closely abut each other at the lower center of the hole-shaped molds when moving forward. and a lower mold device configured by drilling a pair of grooves in the front end surfaces of these pin-shaped molds to form a groove mold for forming a retaining ring when they come together to form a groove mold for forming a retaining ring; The upper mold device is equipped with a concave mold that matches the shape and size of the front side of the finished product at a location corresponding to the upper surface of the piece, and the lower mold device and the upper mold device are used to mold A mold for manufacturing clothing buttons, characterized in that the outer peripheral surface of the opening edge of the concave mold comes into close contact with the upper surface of the piece body when the mold is in a mating state.