JPH04175110A - Mold-fitting device in molding machine - Google Patents

Abstract

PURPOSE:To deal with frequent mold-replacement by a method in which while a pair of left and right clampers are connected by a clamping bolt which is screw-connected from one clamper to the other clamper through a mold-fitting plate, the press member of the clamping bolt is provided on one clamper. CONSTITUTION:Clamper 6, 7 are supported in recessed parts 3, 4 at both sides up and down of a mold-fitting plate 1 by guide bolts 8, 8, and are provided movably inside and outside. A pair of left and right clampers 6, 7 are connected by the clamping bolt 11 which is screw-connected from one clamper 6 to the other clamper 7 through the mold-fitting plate 1. The clampers on both sides are made movable by turning the clamping bolt 11, whereby the mold is fitted. Consequently, the fitting time of the mold is shortened, and the device may deal with frequent mold-replacement.

Description

[Detailed Description of the Invention] [Industrial Field of Application] This invention applies to fixed plates of mold clamping devices such as injection molding machines, etc.
This invention relates to a mold mounting device for a molding machine that can be used when mounting a mold.

[Prior art] Conventional mold installation involves bolting the mold at four locations to a mold mounting plate fixed to a fixed plate, or installing clamps at four locations on the left, right, top, and bottom of the mold mounting plate. Clamps are individually tightened to the mold.

[Problems to be solved by the invention] With this conventional installation method, it takes time to tighten all the bolts, etc., and because there are tie bars near the bolts and clamps, work clothes are not suitable. This was very troublesome, as it required changing the bolt position each time the dimensions of the mold changed, and it was not suitable for frequent mold replacement.

This invention solves the above-mentioned conventional problems, and its purpose is to fasten the mold at four locations, while
This is an extremely streamlined mold mounting device for a new molding machine that requires less work at two locations than before, and even if the dimensions of the mold vary to a certain extent, the mold can be mounted using the same method. Our goal is to provide the following.

[Means for Solving the Problems] The feature of the present invention for the above-mentioned purpose is that recesses of a required width are provided on both sides of the mold mounting plate, and a clamp claw is supported in each recess by a guide bolt. The pair of left and right clamp claws are connected by a clamp bolt that passes through the mold mounting plate from one clamp claw and is screwed into the other clamp claw, and a clamp bolt is attached to one clamp claw. A restraining member is provided.

[Operation] In the above configuration, if the clamp bolt is continued to be rotated after the mold is positioned on the mold mounting plate that is permanently bolted to a fixed plate, etc., the clamp bolt will be prevented from moving in the axial direction by the restraining member. Since it is blocked, the clamp bolt and the other screwed clamp claw start to move relative to each other, and both clamp claws move inward in the recess while being supported by the guide bolt.

Eventually, it will engage with the steps on both sides of the mold on the mold mounting plate, and the mold will be firmly attached to a stationary plate, etc., with the opposing positions of both sides held by the clamp claws. can be attached.

[Example] In the figure, reference numeral 1 is a mold mounting plate, which has bolt holes 2.2 drilled at four locations on the top and bottom.

Recesses 3.4 of a required width are provided oppositely on the upper and lower sides of the mold mounting plate 1. A through hole 5 is provided in the plate between the pair of left and right recesses 3.degree. 4, which opens at the center of the recess.

Reference numeral 6.7 denotes clamp claws located opposite each of the recesses 3 and 4, which are movably attached to a pair of guide bolts 8 and 8 provided in each of the recesses 3 and 4 in parallel with the through hole 5. A bolt hole 9 having an engagement step is provided in the center of one clamp claw 6, and a punch hole 10 is provided in the center of the other clamp claw 4. It is a provision.

Reference numeral 11 denotes a long clamp bolt with a threaded shaft 12 at its tip, which is inserted from one clamp claw 6 into the other recess 4 through the through hole 5, and is inserted into the other clamp claw 7 onto the protruding threaded shaft 12. are screwed together.

Further, the bolt head 13 of the clamp bolt 11 is provided with a hole for fitting a wrench, etc., and after the bolt head 13 is engaged with the bolt hole 9, a wrench is inserted into the outside of one clamp claw 6. A restraining member 15 for the clamp bolt 11 having an insertion opening 14 is provided to prevent the clamp bolt 11 from protruding from one clamp claw 6.

In addition, the mold installed there, as shown in Figure 2,
The molds 16 and 17 are not limited to a fixed size, but can be easily mounted as long as the molds 16 and 17 have a size that allows the clamp claws 6 and 7 to hold together in the range from the side edge of the mold mounting plate 1 to the inner edge of the recess. It can be carried out.

In the embodiment shown in FIG. 3, the holding member 15 is formed of a cylindrical body, and a special wrench is inserted through the cylindrical body to the bolt head 1.
3 can be fitted.

As shown in FIGS. 4 and 5, the mold mounting device having the above configuration is configured to attach the mold mounting plate 1 to the mold mounting surfaces of the fixed platen 20 and the movable platen 21 of the mold clamping device using one clamp claw 6. It is used by contacting the operating side and fastening with bolts.

The pair of molds 22 and 23 are suspended from above between the two plates in a closed state, and after positioning, the movable plate is moved and the molds are temporarily supported by both plates, and then mounted using the clamp claws 6 and 7. will be held.

Attachment can be performed by rotating the clamp bolt 11 using a special wrench. Since the bolt head 13 of this clamp bolt 11 is held down, the clamp bolt 11 and the other clamp pawl 7 screwed onto the screw shaft 12 move relative to each other due to rotation, and both clamps While the claws 6, 7 support the guide bolts 8, 8, the recess 3,
Move 4 inward.

Then, on the stationary platen side, the mold 22 engages with the steps on both sides of the mold 22 on the mold mounting plate, and the mold 22 is fixed with the opposite positions of both sides held by the clamp claws 6 and 7. Board 20
can be securely attached to.

In the above embodiment, the mold is mounted from above, but when the mold is mounted from the side, the clamp claws may be provided at both the upper and lower ends of the mold mounting plate, and the upper and lower parts may be connected by clamp bolts.

[Effects of the Invention] As described above, in this invention, recesses 3 and 4 of a required width are provided oppositely on both sides and upper and lower sides of the mold mounting plate 1, and clamp claws 6 and 4 are provided in each recess.
7 is supported by guide bolts 8, 8 so as to be movable inwardly and outwardly, and a pair of left and right clamp claws 6.7 are inserted from one clamp claw 6 through the mold mounting plate 1 to the other clamp claw 7. The molds are connected by a clamp bolt 11 screwed into the mold, and the clamp claws on both sides are moved by rotation of the clamp bolt, so that the mold can be attached, resulting in the following effects.

■ Since there is no need to tighten each bolt or clamp as in the past, mold installation time is shortened and the mold can be replaced frequently.

■ The clamp claw moves in the opposing recess to fix the mold, so it can be applied to a certain mold size, and as the mold size changes, unlike in the past. There is no need to reposition the clamp claw.

■ Since the clamp claw is supported by a guide bolt installed parallel to the crank bolt, the verticality of the mold can be corrected by moving the clamp claw inward, and there is no need to make the verticality strict during temporary support. , the installation work does not take much time.

[Brief explanation of the drawing]

The drawings show an embodiment of the mold mounting device for a molding machine according to the present invention, in which Fig. 1 is a half-part plan sectional view, Fig. 2 is a longitudinal sectional view of the main part, and Fig. 3 shows the clamp claw portion and other parts. FIG. 4 is a partial plan view of the mold clamping device showing the mounting state of the mold, and FIG. 5 is an elevational view of the fixed platen side. １・・・・・・・・・Mold mounting plate ２・・・・・・
...Bolt hole 3.4...Recess 5...
...Through hole 6.7...Clamp claw 8...Guide bolt 10...Threaded hole 11...Clamp bolt 12... ...Threaded shaft 13 ... Bolt head 15 ... Holding member patent applicant Nissei Jushi Kogyo Co., Ltd.

Claims (1)

[Claims] Recesses of the required width are provided on the top and bottom of both sides of the mold mounting plate, and a clamp claw is supported in each recess by a guide bolt so that it can move in and out, and a pair of left and right clamp claws are connected to one clamp claw. It is connected by a clamp bolt that passes through the mold mounting plate and screws into the other clamp claw, and
A mold mounting device for a molding machine, characterized in that one clamp claw is provided with a clamp bolt holding member.