JPH018343Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention is an injection mold, in particular, a female mold and a male mold are closed and sealed to form a cavity, and two or more types of reactive foams are formed in the cavity. Regarding injection molding molds for molding resin molded products of a predetermined shape by injecting resin material and curing it by reaction, or by injecting molten resin material, characters are used when molding resin molded products. To provide a mold for injection molding, which is capable of stamping marks, marks, etc. on a resin molded product, and also allows the stamping body used for the stamping to be easily replaced.

When molding a resin molded product using an injection mold, conventionally, when stamping characters or marks on the resin molded product, the stamp body with characters or marks stamped on the end surface was placed outside the mold. The stamp body was inserted into a through hole extending from the mold to the cavity, and a template was brought into contact with the back of the mold so that the end face of the character side of the stamp body faced the cavity. However, with such a type, it is not easy to adjust the stamp body to the cavity side, and furthermore, if the stamp body is damaged or the stamp body is changed, the template must be removed, which is extremely difficult. It was troublesome.

The present invention connects the stamp body inserted into the stamp body insertion hole of the mold and the operating screw inserted from the outside of the mold.
By configuring the stamp body to slide along the stamp body insertion hole by rotating the operating screw, fine adjustment of the stamp body toward the cavity side can be made, and the stamp body can be easily replaced. This is a mold for injection molding.

Embodiments of the present invention will now be described with reference to the accompanying drawings.

FIG. 1 is a sectional view, FIG. 2 is a sectional view taken along the line - FIG. 1, and FIG. 3 is a sectional view showing another embodiment.

As shown in FIG. 1, the injection mold of the present invention consists of a female mold 1 and a male mold 2.
and the male mold 2 are closed and sealed to form a cavity 3. A reactive foamed resin material is injected into the cavity 3 through the injection hole 4 and reacted and cured in the cavity 3, or a resin molded product having the shape of the cavity 3 is formed by injecting a molten resin material. A stamp body insertion hole 5 is provided in at least one of the female mold 1 and the male mold 2. Although the drawings illustrate an example in which the stamp body insertion hole 5 is provided in the female mold 1, the present invention is not limited to this. Although not shown, a stamp body insertion hole may be provided in the male mold 2 or in both the female mold 1 and the male mold 2. This stamp body insertion hole 5 reaches the cavity 3, and a stamp body 6 is inserted into it. The stamp body 6 has a mark 60 engraved on one end and a horizontally grooved screw 7 on the other end, and the mark 60 is inserted into the stamp body insertion hole 5 on the cavity 3 side. be. The female mold 1 provided with the stamp body insertion hole 5 also has an operation screw hole 8 which intersects the stamp body insertion hole 5 at right angles from the outside of the female mold 1.
is provided. Insert the operating screw 9 from the outside of the female mold 1 into the operating screw hole 8, and insert the operating screw 9 into the operating screw hole 8.
and the stamp body 6 are connected. The operation screw 9 is connected by screwing with the horizontal groove-shaped screw 7 of the stamp body 6, and the rotation of the operation screw 9 causes the stamp body 6 to slide along the stamp body insertion hole 5. This is how it has become.

The present invention is not limited to what has been described above. for example,
As shown in FIG. 3, the outer part of the marking body insertion hole 5 is made into a female thread, and the operating screw 9 is screwed into this from the outside of the female mold 1. The operating screw 9 and the stamp body 6 may be connected so that the body 6 does not rotate within the stamp body insertion hole 5. In short, it is important to connect the stamp body and the operating screw so that when the operating screw inserted from the outside of the mold is rotated, the stamp body slides along the stamp body insertion hole.

Reference numeral 10 in the figure indicates a knob attached to the operating screw 9 to facilitate rotation of the operating screw 9.

In the injection mold of the present invention as described above, the female mold 1 and the male mold 2 are closed and sealed to form a cavity 3.
A resin material is injected into this cavity 3 and cured. Next, the female mold 1 and the male mold 2 are released, and a resin molded product having the shape of the cavity 3 is molded. A stamp body insertion hole reaching the cavity is provided, and a stamp body on which characters or the like are engraved is inserted into the stamp body insertion hole with the characters or the like facing the cavity.
Further, since the stamp body and the operating screw inserted from the outside of the mold are connected, when the operating screw is rotated, the stamp body slides along the stamp body insertion hole. Therefore, by rotating the operating screw, the character side of the stamp body can be easily brought into view of the cavity, and furthermore, fine adjustment thereof can be easily performed. The print body is damaged or
When making the change, in the case shown in FIG. 1, the stamp body is pulled out from the cavity side by rotating the operating screw after mold release. Next, a new stamp body is inserted into the stamp body insertion hole from the cavity side, and the operating screw is rotated in the opposite direction to that described above. In addition, in the case shown in FIG. 3, the stamp body is removed from the stamp body insertion hole together with the operation screw, the stamp body is replaced, and the stamp body is inserted into the stamp body insertion hole again. As described above, according to the present invention, the stamp body can be easily replaced.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a sectional view, FIG. 2 is a sectional view taken along the line of FIG. 1, and FIG.
The figure is a sectional view showing another embodiment. 1 is a female mold, 2 is a male mold, 3 is a cavity, 5
Reference numeral indicates a stamp insertion hole, 6 indicates a stamp body, 60 indicates a mark, and 9 indicates an operating screw.

Claims (1)

[Scope of utility model registration request] In an injection mold in which a female mold and a male mold are closed and sealed to form a cavity, and a resin material is injected into the cavity to form a resin molded product of a predetermined shape, the female mold or the male mold is A stamp body insertion hole reaching the cavity is provided in at least one of the molds, and a stamp body with characters etc. engraved is inserted into the insertion hole with the characters etc. facing the cavity side, and the stamp body and An injection mold that is connected to an operating screw inserted from the outside of the mold.