JPS5811547Y2 - mold guide device - Google Patents

Description

[Detailed Description of the Invention] This invention relates to a mold guide device that aligns and connects and fixes mold plates on a movable side and a fixed side.

In conventional molding molds, such as injection molding molds, a movable side mold plate and a fixed side mold plate are joined to form a single body, and then a molding material is poured under high pressure into a cavity formed between the two mold plates. In the case of injection molding, as shown in Fig. 1, for example, a bushing b having a taper hole is attached to the stationary mold plate a, and a taper matching the taper hole is attached to the movable mold plate C. It is known to attach a base e of a taper pin d and align the stationary mold plate a and the movable mold plate C.

However, in the past, the bush b and the base e of the taper pin d were only inserted into both templates a or C, respectively, so when separating the movable template C from the fixed template a, the taper There was a risk that the pin would fall off due to the strong adsorption force between the pin d and the bush b.

In addition, when aligning by fitting the taper pin d and the bushing b, even if the angle of a part of the taper matches, if the diameter of the end changes, the taper pin d and the bushing b
The height when the two are fitted changes.

Therefore, there will be a difference in the total thickness of the stationary template a and the movable template C.

Furthermore, even if the height of the tapered pin d fitted into the bushing b is controlled within the specified dimensions, the total thickness of both templates a and C may vary. .

In this way, if the height when the taper pin d and the bushing b are fitted and the total thickness of both mold plates a and C are different, the height when the taper pin d is fitted to the bushing b or , both templates a,! In order to match the total thickness with l:C, it was necessary to perform the troublesome work of inserting a collar f based on the actual item onto the upper part of the bush b.

This invention was made with attention to the above circumstances, and its purpose is to provide a threaded part at the upper end of the bushing that fits into the taper pin, and to screw the adjustment member into this threaded part. An object of the present invention is to provide a mold guide device in which the position of a bushing fitted with a taper pin can be easily adjusted by adjusting the screwing depth of an adjusting member, and furthermore, the bushing can be prevented from falling off.

An embodiment of this invention will be described below with reference to FIGS. 2 and 3.

1 in FIG. 2 is a movable template.

The movable mold plate 1 is guided by a guide pin (not shown) provided on the fixed mold plate 2 so as to be movable up and down.

Cavities 3 and 4 corresponding to the outer shape of the molded product are formed on opposing surfaces of the movable mold plate 1 and the fixed mold plate 2.

The fixed side template 2 is attached to the fixed side mounting plate 6 by a plurality of mounting screws 5.

A sprue push 7 is provided that passes through the fixed side mounting plate 6 and the fixed side mold plate 2 and communicates with the cavities 3 and 4.

Further, the movable mold plate 1 is fixed to a movable mounting plate 10 via a receiving plate 8 and a spacer block 9 with a plurality of mounting screws 11.

Therefore, a taper pin 12 is fitted and fixed on the movable side template 1 and fixed on the opposing surface of the movable side template 1 and the fixed side template 2 in order to position the two. A bush 13 into which the taper pin 12 is fitted is fitted so as to be vertically movable.

The taper pin 12 has a flange 12b formed at a base 12a.

Further, the bush 13 is provided with a tapered hole 13a having the same taper as the taper pin 12 described above.

A fitting hole 14 and a fitting hole 15 are provided in the movable side and fixed side template plates 1 and 2, respectively, and a taper pin 12 is fitted into the fitting hole 14.
5 has a bushing 13 fitted therein.

Further, a protrusion 13b is provided concentrically at the upper end of the bush 13, and a threaded portion 13C is provided on the outer peripheral surface of this protrusion 13b.

The adjusting member 16 is screwed into this threaded portion 13C.

The adjusting member 16 has a disk shape with a larger diameter than the bush 13, and has a screw hole 16a in the center thereof to be screwed into the threaded portion 13b.

The outer circumferential edge of the adjusting member 16 engages with an engagement step 2a consisting of a concave portion provided on the upper surface of the stationary template 2, and in this state, the lower surface of the adjusting member 16 and the shoulder 13 of the bushing 13 are engaged with each other.
The adjusting member 16 is formed thinner than the length of the threaded portion 13C so that a gap is formed between the adjusting member 16 and the threaded portion 13C.

Then, by rotating this adjustment member 16, the bush 13
By screwing deeply into the protruding portion 13b, the gap becomes small, and when screwing in shallowly, the gap becomes large.

In other words, the bushing 13 can be moved up and down depending on the screwing depth of the adjustment member 16.

Therefore, even if there is a dimensional error between the templates 1 and 2, by rotating the adjusting member 16 and moving the bush 13 up and down, it is possible to bring it into close contact with the taper pin 12.

Further, an ejector plate 17 is provided inside the spacer block 9, and this ejector plate 17
A return pin 18 is provided to pass through the receiving plate 8 and the movable mold plate 1.

The upper end of this return pin 18 comes into contact with the fixed template 2 when the movable template 1 contacts the fixed template 2.

As explained above, a taper pin is provided on the movable side template,
The stationary side template is provided with a bushing having a tapered hole that fits with the taper pin, a threaded portion is provided at the top of this bushing, and this threaded portion engages with an engagement stepped portion provided on the stationary side template. The position of the bushing can be adjusted in the vertical direction by rotating the adjusting member, so even if there is a slight error in the thickness of the templates, the taper pin and bushings can be brought into close contact with each other to ensure that the bushings are in close contact with each other. The template can be positioned.

Furthermore, since the adjusting member screwed into the bushing engages with the engagement step formed on the upper surface of the stationary template, there is no risk that the bushing will fall off from the stationary template.

[Brief explanation of the drawing]

Fig. 1 is a cross-sectional view of the main parts of a mold equipped with a conventional mold guide device, Fig. 2 is a cross-sectional view of a mold equipped with a mold guide device according to an embodiment of this invention, and Fig. 3 is a cross-sectional view of the main part of a mold equipped with a conventional mold guide device. FIG. 3 is an enlarged sectional view of the mold guide device. DESCRIPTION OF SYMBOLS 1...Movable side template, 2...Fixed side template, 2a...Engagement step part, 12...Taper pin, 13...・・・Butshu, 13C・・・・・・
Threaded portion, 15...fitting hole, 16...adjustment member, 16a...screw hole.

Claims (1)

[Scope of utility model registration request] In a mold consisting of a fixed side template, a movable side template joined to the fixed side template, and a cavity formed between these two templates, a retaining step portion bored in the fixed side template is used. a taper pin provided in the movable side template and having a tapered surface protruding into the fitting hole; and a taper pin that is slidably inserted in the axial direction into the fitting hole and has one end connected to the tapered surface of the taper pin. A tapered hole to fit into, a bushing having a threaded part at the other end, and a threaded hole in the center part of which is rotatably locked on the outer periphery to the retaining step part of the fitting hole and screwed into the threaded part of the bushing. and an adjustment member capable of sliding the bushing in the axial direction by rotational adjustment.