CN105172049A - Two-way sequence push mechanism mold - Google Patents

Abstract

The invention relates to a two-way sequential push-out mechanism mold, which belongs to the field of plastic molds. The mold consists of two parts, the movable mold and the fixed mold, the fixed mold part, the sprue sleeve and the fixed mold seat plate and the fixed mold plate have an interference fit, and the pusher plate has a gap fit, the core and the fixed mold plate have an interference fit, and the rubber is placed on the fixed plate. The hole can move freely, the guide post is interference fit with the fixed mold seat plate and the fixed template and runs through the pusher plate, the limit screw penetrates through the fixed template and connects the pusher plate, and the fixed mold seat plate and the fixed template use fastening screws Connection; in the moving mold part, the push tube, puller rod and reset rod are placed in the push rod fixing plate and run through the moving template. The push rod fixing plate and the push plate are connected with fastening screws. On the seat plate, connect the movable formwork seat plate, pads and movable formwork in sequence with screws. By adopting the above-mentioned technical scheme, the mold has a simple structure, is easy to design and manufacture, and can better realize two-way sequential pushing of plastic parts.

Description

A Bidirectional Sequential Ejection Mechanism Die

technical field

The invention relates to a two-way sequential push-out mechanism mold, which belongs to the field of plastic molds and is mainly used for the ejection of plastic parts.

Background technique

Injection molding is a production method with a high degree of automation and high production efficiency. A reasonable mold design should be that the plastic part breaks away from the fixed mold when the mold is opened, wraps it tightly on the moving mold, and returns together with the moving mold. The ejector rod on the side ejection mechanism ejects the plastic part from the movable mold. Therefore, when designing the mold, it is necessary to fully consider the position of the parting surface, or deliberately design different draft angles of the movable mold and the fixed mold cavity, or change the position of the core, or use comprehensive measures such as the auxiliary function of pulling first and then pushing with the help of the ejector pin. To realize that the plastic part stays on the side of the moving mold. However, for some shapes of plastic parts, even if the above comprehensive measures are adopted, the plastic parts cannot be kept on the side of the movable mold. At this time, it is necessary to design a push-out mechanism on the fixed mold part, relying on the thrust of the push-out mechanism to force the plastic part to be aligned with the fixed mold. The mold is separated, stays on the side of the movable mold and returns together with the movable mold and is ejected. But doing so increases the complexity of the mold setting part and requires extra power. In addition to setting the push-out mechanism on the fixed mold part, a two-way sequential push-out mechanism for the fixed and movable molds can also be used, that is, a parting surface is added to the fixed mold part, and when the mold is opened, the parting surface must be opened at a fixed distance first, so that the plastic parts First, the mold is demoulded from the fixed mold core, and then when the main parting surface is parted, the plastic part can be reliably kept in the movable mold part, and finally the plastic part is pushed out by the movable mold pushing mechanism for demoulding. At present, three types of two-way sequential push-out mechanisms are mainly used at home and abroad, namely, spring type, swing hook type, and slider type two-way sequential push-out mechanisms. Among them, spring-type two-way sequential push-out mechanisms generally use spring pop-up and limit screw distance to ensure plastic The parts are left on the side of the moving mold, and the swing hook type and slider type two-way sequential ejection mechanism mold design and manufacture are complicated and costly. The present invention is based on the above three types of two-way sequential push-out mechanisms, and in practice creates a mold for a two-way sequential push-out mechanism.

Contents of the invention

Aiming at the problems of complex design and manufacture and high cost of the mold of the swing hook type and slider type bidirectional sequential ejection mechanism, the present invention provides a bidirectional sequential ejection mechanism mold with simple structure and low design and manufacturing costs.

The technical scheme of the present invention is: the mold of the two-way sequential ejection mechanism includes two parts, the movable mold and the fixed mold. , core, and screws, the sprue sleeve is interference fit with the fixed mold base plate and the fixed template, and the clearance fit with the pusher plate, the core and the fixed template are interference fit, the rubber can move freely in the hole of the fixed template, and the guide The column, the base plate of the fixed mold and the fixed formwork are interference fit and run through the pusher plate, the limit screw penetrates through the fixed formwork and connects the pusher plate, the base plate of the fixed mold is connected with the fixed formwork with fastening screws; the movable mold is controlled by the movable formwork , cushion block, puller rod, movable mold seat plate, push tube, push rod fixed plate, push plate, reset rod, and screw. The push tube, pull rod, and reset rod are placed in the push rod fixed plate and run through the movable formwork , The push rod fixed plate and the push plate are connected with fastening screws, the push rod fixed plate and the push plate are on the movable mold seat plate, and the movable mold seat plate, cushion block, and movable formwork are connected in sequence with screws.

The working end of the push tube is processed with a hole whose size can form a small clearance fit with the working end size of the core.

The mold structure of the two-way sequential push-out mechanism described in the present invention is simple, easy to design and manufacture, and can better realize the two-way sequential push-out of plastic parts.

Description of drawings

Fig. 1 is a front view of the mold of the bidirectional sequential ejection mechanism of the present invention, Fig. 2 is a left side view, and Fig. 3 is a top view.

In Figure 1 and Figure 2, 1. Sprue sleeve, 2. Fixed mold seat plate, 3. Guide column, 4. Limit screw, 5. Fixed template, 6. Pusher plate, 7. Moving template, 8. Pad , 9. Moving mold seat plate, 11. Push plate, 12. Push rod fixed plate, 13. Push tube, 14. Pull rod, 15. Core, 18. Rubber, 19. Reset rod.

Detailed ways

The two-way sequence push-out mechanism mold includes two parts, a movable mold and a fixed mold. The fixed mold is composed of a fixed mold seat plate 2, a sprue sleeve 1, a guide post 3, a limit screw 4, a fixed template 5, a pusher plate 6, a rubber 18, Core 15, screw constitute, movable mold is made of movable template 7, spacer block 8, pull rod 14, movable mold seat plate 9, push tube 13, push rod fixed plate 12, push plate 11, reset rod 19, screw.

In the fixed mold part of the mold, the sprue sleeve 1 is interference fit with the fixed mold base plate 2 and the fixed template 5, and is clearance fit with the pusher plate 6, the core 15 is interference fit with the fixed template 5, and the rubber 18 is placed in the fixed mold. The hole in the template 5 can move freely, the guide post 3 is interference fit with the fixed mold base plate 2 and the fixed template 5 and runs through the pusher plate 6, the limit screw 4 penetrates through the fixed template 5 and connects with the pusher plate 6, and the fixed mold The seat plate 2 is connected with the fixed template 5 with fastening screws.

The movable mold part of the mold, the push tube 13, the pulling rod 14, and the reset rod 19 are placed in the push rod fixed plate 12 and run through the movable template 7, the push rod fixed plate 12 is connected with the push plate 11 with fastening screws, and the push Rod fixed plate 12, push plate 11 are on movable formwork base plate 9, connect movable formwork base plate 9, cushion block 8, movable formwork 7 successively with screw.

The working end of the push tube 13 is processed with a hole whose size can form a small clearance fit with the working end size of the core 15 .

When the movable and fixed mold parts of the mold are closed, the guide post 3 on the fixed mold side first contacts and cooperates with the hole on the movable template 7, the rubber 18 is compressed, and the reset rod 19 drives the push tube 13 and the pull rod 14 Reset, while the core 15 is in contact with the push tube 13, and when the reset rod 19 is completely reset, a closed mold cavity is formed. At this time, the molten plastic is injected into the mold cavity from the nozzle of the injection machine through the sprue sleeve 1. After the molten plastic condenses into a plastic part, one side of the movable mold is driven back by the injection machine, and the rubber on the fixed mold side is Compress and return to push the pusher plate 6 to push the plastic part out of the core 15 gradually. When the limit screw 4 moves to collide with the fixed template 5, the pusher plate 6 stops moving, and the movable mold continues to move for a certain distance to stop moving. At this time The plastic parts and condensate stay on the side of the movable mold, and the ejector rod of the injection machine pushes the push plate 11, the push rod fixing plate 12, the push tube 13, the pull rod 14 and the reset rod 19 to move forward, and the push tube 13 and the pull rod 13 move forward. The material rod 14 ejects the plastic part and the condensate from the mold cavity together, and the plastic part and the condensate are taken out manually.

Claims (2)

1. a two-way sequence extrusion mechanism mould, comprise dynamic, cover half two parts, it is characterized in that: cover half is by top clamping plate, sprue bush, guide pillar, stop screw, solid plate, push piece plate, India rubber, core, screw is formed, sprue bush and top clamping plate and solid plate interference fit, coordinate with push piece sheet separation, core and solid plate interference fit, rubber is placed in can be freely movable in cover half plate hole, guide pillar and top clamping plate and solid plate interference fit through push piece plate, stop screw is connected through solid plate with push piece plate, top clamping plate is connected with solid plate trip bolt, dynamic model is made up of moving platen, cushion block, sprue puller, Bottom clamp plate, ejector sleeve, ejector pin retaining plate, push pedal, release link, screw, ejector sleeve, sprue puller, release link are placed in ejector pin retaining plate and run through moving platen, ejector pin retaining plate is connected with push pedal trip bolt, ejector pin retaining plate, push pedal, on Bottom clamp plate, connect Bottom clamp plate, cushion block, moving platen successively with screw.

2. two-way sequence extrusion mechanism as claimed in claim 1 mould, is characterized in that: ejector sleeve working end is processed with a hole, and the size in this hole and the working end size of core can form little matched in clearance.