CN210116136U - Fixed distance parting device for injection mould - Google Patents

Abstract

The utility model relates to a fixed-distance parting device for an injection mold, which comprises a stopper, the stopper is fixed on a pusher plate, and a first slideway and a second slideway are longitudinally formed in the stopper. A fixed mold pull rod is installed in the first slideway, the fixed mold pull rod is fixed on the fixed mold, and a limit groove is defined on the fixed mold pull rod. Positioning surface, one end of the fixed mold pull rod is also made with a first guide sliding incline, the second slideway is installed with a movable mold pull rod, the movable mold pull rod is fixed on the movable mold base plate through its tail, and the A sliding groove is formed in the middle of the movable die pull rod, a guide block is made on the head of the movable mold pull rod, and a second sliding-in inclined plane and a sliding-out inclined plane are respectively formed on the upper and lower parts of one side of the guide block. Compared with the prior art, the utility model is suitable for complex large-scale injection molds, realizes that the molds are opened in a certain order and distance, has a simple structure and is convenient for maintenance.

Description

Fixed distance parting device for injection mould

technical field

The utility model relates to a fixed-distance parting device of an injection mold, belonging to the technical field of injection molds.

Background technique

In the double parting surface injection mold, it is necessary to use the fixed-distance parting device to make the mold move in a certain order and distance when the mold is opened, so as to complete the parting action. The fixed-distance parting devices in the prior art include spring screw type, guide post spring type, swing hook type, sliding plate type and so on. However, with the advancement of mold design technology, the above-mentioned fixed-distance parting devices have gradually exposed their shortcomings and are no longer suitable for some complex large-scale injection molds.

Utility model content

The purpose of the utility model is to provide a fixed-distance parting device for an injection mold in order to overcome the shortcomings of the prior art.

The technical scheme that the utility model adopts for realizing the purpose is:

The fixed-distance parting device of the injection mold includes a stopper, the stopper is fixed on the pusher plate, a first slideway and a second slideway are longitudinally formed in the stopper, and a first slideway is installed in the first slideway. The fixed mold pull rod is fixed on the fixed mold, and a limit groove is formed on the fixed mold pull rod. One end of the die rod is also provided with a first guide-sliding inclined plane;

A movable die tie rod is installed in the second slideway, the movable die tie rod is fixed on the movable die seat plate through its tail, a sliding groove is formed in the middle of the movable die tie rod, and the head of the movable die tie rod is made of a sliding groove. A guide block is provided, and the upper and lower parts of one side surface of the guide block are respectively provided with a second sliding-in inclined plane and a sliding-out inclined plane.

As a further optimization of the above technical solution: a mounting groove is also formed in the block, the mounting groove is connected with the first slideway and the second slideway, and a spring is installed in the mounting groove, so One end of the spring is fixed on the bottom of the installation groove, and the other end is connected with a limit block, a third slideway is formed in the limiter block, and a guide block matched with the guide block is formed on the third slideway. The slide-out slope and the second guide-slide-in slope. When the mold is closed, the sliding groove is located in the third slideway, the head of the limit block is located in the limit groove, and the head of the limit block is located in the limit groove. A third guide-sliding inclined surface and a locking surface are respectively made on both sides of the part.

Compared with the prior art, the utility model is suitable for complex large-scale injection molds, realizes that the molds are opened in a certain order and distance, has a simple structure and is convenient for maintenance.

Description of drawings

FIG. 1 is a schematic structural diagram of the core-pulling ejection mechanism of the injection mold of the present invention when the mold is closed.

Figure 2 is a schematic diagram of the cross-sectional structure of the present invention.

FIG. 3 is a partial enlarged view of A in FIG. 1 .

Detailed ways

The present utility model will be further described below with reference to the accompanying drawings and specific embodiments. As shown in Figures 1-3, the core-pulling and ejection mechanism of the injection mold of the present invention includes a movable mold and a fixed mold. The fixed mold includes a fixed mold seat plate 10 and a fixed mold insert 7. The movable mold The mold includes a movable mold base plate 2, on which a movable mold insert 4 is fixed, and a pusher plate 3 is also installed on the movable mold base plate 2, and a sliding plate 3 is installed on the pusher plate 3. Block 5, the movable mold insert 4 passes through the pusher plate 3, and together with the slider 5 and the fixed mold insert 7 form a mold cavity 6, after the injection is completed, the product is inverted on the slider within 5. A fixed-distance parting device is also installed on the mold. The fixed-distance parting device ensures that each parting surface of the mold is opened in a certain order.

In the above technical solution: as shown in FIG. 2 , the fixed-distance parting device includes a stopper 11 , the stopper 11 is fixed on the pusher plate 3 , and a first sliding block is longitudinally formed in the stopper 11 . The first slideway 111 is provided with a fixed die tie rod 12, the fixed die tie rod 12 is fixed on the fixed die, and the fixed die tie rod 12 is limited by a limit groove 121 , the two side walls of the limiting groove 121 are respectively made into a first sliding inclined surface 1211 and a positioning surface 1212 , and one end of the fixed die pull rod 12 is also made with a first guiding sliding inclined surface 122 .

In the above technical solution: a movable die pull rod 13 is installed in the second slideway 112, the movable mold pull rod 13 is fixed on the movable mold base plate 2 through its tail, and a sliding concave is formed in the middle of the movable mold pull rod 13. In the groove 131, the head of the movable die pull rod 13 is made into a guide block 132, and the upper and lower parts of one side of the guide block 132 are made into a second sliding-in inclined surface 1321 and a sliding-out inclined surface 1322 respectively.

In the above technical solution: a mounting groove 113 is also formed in the block 11 laterally, the mounting groove 113 communicates with the first slideway 111 and the second slideway 112 , and a spring is installed in the mounting groove 113 14. One end of the spring 14 is fixed at the bottom of the installation groove 113, and the other end is connected to a limit block 15. The limit block 15 is formed with a third slideway 151, and the third slideway 151 is formed on the top. There are a guide sliding out inclined surface 1511 and a second guide sliding in inclined surface 1512 that cooperate with the guide block 132. When the mold is closed, the sliding groove 131 is located in the third slideway 151. The head is located in the limiting groove 121 , and a third guiding and sliding inclined surface 152 and a locking surface are respectively formed on both sides of the head of the limiting block 15 . The cooperation between the positioning surface 1212 and the locking surface causes the fixed die pull rod 12 to be stuck by the limit block 15, which has a certain locking effect on the parting surface between the movable and fixed dies, so that the space between the pusher plate 3 and the movable die base plate 2 is locked. Type first.

In the above technical solution: a limit hole 21 is defined in the movable die base plate 2, and the limit hole 21 is composed of a large hole and a small hole, the small hole is located on the upper part of the large hole, and the large hole is connected with the large hole. A step 211 is formed between the small holes, a limit screw 1 is arranged in the limit hole 21, the cap head 101 of the limit screw 1 is located in the large hole, and the rod portion 102 of the limit screw 1 passes through The small hole is fixed on the bottom of the pusher plate 3 . When the pusher plate 3 performs the ejection movement, the cap head 101 moves until it touches the step 211 and is limited, thereby limiting the ejection distance of the pusher plate 3 .

In the above technical solution: the fixed mold also includes a splitter plate 9 and two sets of hot runner systems 8, the slider 5 and the mold cavity 6 are each provided with two sets, and the hot runner systems 8 are inserted through the fixed mold. The blocks 7 are in direct contact with the mold cavities 6 , and the molten plastic is divided by the distribution plate 9 and then enters the respective mold cavities 6 through the hot runner system 8 . Two products can be completed in one injection cycle, which greatly improves production efficiency. The utility model adopts a hot runner system to avoid defects such as material scars and flow marks after product trimming, so as to avoid affecting product performance.

In the above technical solution: as shown in FIG. 3 , a mold pattern 71 is formed on the surface of the fixed mold insert 7 . The mold pattern 71 is individually inlaid, which is convenient for processing.

The working process of the utility model is as follows: after the injection molding machine is closed, the molten plastic enters the mold cavity 6 through the hot runner system 8. After the product is formed, the fixed mold pull rod 12 is blocked by the limit block 15 between the movable and fixed molds. The parting surface has a certain locking effect, so that the first parting is performed between the pusher plate 3 and the movable die base plate 2, and the movable die base plate 2 drives the movable die insert 4 to move down. The end buckle is located in the slider 5, and the product is still fixed when the movable die insert 4 moves down, so as to realize the partial separation of the product and the movable die insert 4; Drive down, move down a certain distance and then slide out inclined surface 1322 and guide slide out inclined surface 1511 in contact, so that guide block 132 slides into the third slideway 151, at this time, the limit block 15 is driven to move left as a whole, and the spring 14 is compressed , the head of the limit block 15 is separated from the limit groove 121, the fixed mold pull rod 12 is unlocked and is driven by the mold opening force to move up and away from the first slideway 111, the mold is divided for the second time, the movable and fixed molds begin to separate, and the movable mold is separated. The seat plate 2 drives the pusher plate 3, the slider 5 and the product to move down, and the slider 5 slides to both sides of the mold to complete the core-pulling action, and the two sides of the product are inverted and demolded smoothly; finally, the injection molding oil cylinder drives the pusher plate 3 to do The ejection movement makes the product completely separate from the movable mold insert 4, the cap head 101 of the limit screw 1 and the step 211 contact the ejection distance of the limit pusher plate 3, and finally the robot completes the removal.

The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present invention without creative efforts. Therefore, any technical solutions that can be obtained by those skilled in the art through logical analysis, reasoning or limited experiments on the basis of the prior art according to the concept of the present invention shall fall within the protection scope of the present invention.

Claims (2)

1. The fixed-distance parting device of the injection mold is characterized by comprising a stop block (11), wherein the stop block (11) is fixed on a stripper plate (3), a first slide way (111) and a second slide way (112) are longitudinally formed in the stop block (11), a fixed mold pull rod (12) is installed in the first slide way (111), the fixed mold pull rod (12) is fixed on a fixed mold, a limit groove (121) is formed in the fixed mold pull rod (12), two side walls of the limit groove (121) are respectively formed into a first slide-in inclined surface (1211) and a positioning surface (1212), and a first guide slide-in inclined surface (122) is further formed at one end of the fixed mold pull rod (12);

a movable die pull rod (13) is installed in the second slide way (112), the movable die pull rod (13) is fixed to the movable die base plate (2) through the tail portion of the movable die pull rod, a sliding groove (131) is formed in the middle of the movable die pull rod (13), a guide sliding block (132) is formed at the head portion of the movable die pull rod (13), and a second sliding-in inclined plane (1321) and a sliding-out inclined plane (1322) are formed in the upper portion and the lower portion of one side face of the guide sliding block (132) respectively.

2. Distance parting device for an injection mold according to claim 1, characterized in that a mounting groove (113) is also transversely made in said stop (11), the mounting groove (113) is communicated with the first slideway (111) and the second slideway (112), a spring (14) is arranged in the mounting groove (113), one end of the spring (14) is fixed at the bottom of the mounting groove (113), the other end is connected with a limit block (15), a third slideway (151) is arranged in the limiting block (15), a guide slide-out inclined surface (1511) and a second guide slide-in inclined surface (1512) which are matched with the guide sliding block (132) are arranged on the third slideway (151), the sliding groove (131) is positioned in the third slideway (151) during die assembly, the head of the limiting block (15) is located in the limiting groove (121), and a third guide sliding-in inclined plane (152) and a locking surface are respectively arranged on two sides of the head of the limiting block (15).

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