CN206154624U - Double -shot moulding mould is exchanged to two processes of core - Google Patents

Abstract

The utility model provides a two-color injection mold with interchangeable cores and two processes, which includes a fixed template, a cavity fixed plate, a core fixed plate, a movable template and a supporting plate arranged on one side. There is an outer wall cavity insert between them, and at least one pair of longitudinally arranged cores are arranged on the core fixing plate, and the corresponding positions of the fixed plate and the two cores have concave cavities of different shapes to form the lining cavity and the product type. cavity, the supporting plate is provided with an ejection mechanism for driving the ejection of the product, and the cavity fixing plate is connected with a rotating mechanism. When the product is ejected, the rotating mechanism drives the cavity fixing plate to rotate 180° to realize the position of the upper and lower cores exchange. The utility model has a simple structure, can simultaneously complete two-step injection molding processes in the same pair of moulds, realizes two-color injection molding according to different injection molding materials, and greatly improves work efficiency.

Description

Core two-process interchangeable two-color injection mold

technical field

The utility model relates to a two-process interchangeable two-color injection mold for cores.

Background technique

As shown in Figures 1 and 2, they are pictures of products to be formed. In order to realize two-color injection molding, the color-separated injection molding of the inner liner 101 and the outer shell 102 must be completed in Figure 1. The injection mold used in the traditional molding method is relatively Complicated, it is necessary to replace the template to achieve two-color injection molding, which is less efficient.

Contents of the invention

The utility model improves the above problems, that is, the technical problem to be solved by the utility model is that the existing two-color injection molding structure is relatively complicated and the efficiency is low.

The specific embodiment of the utility model is: a two-process interchangeable two-color injection mold for the core, including a fixed template, a cavity fixed plate, a core fixed plate, a movable template and a supporting plate arranged on one side. There are outer wall cavity inserts between the cavity fixing plates, and at least one pair of longitudinally arranged cores are arranged on the core fixing plate, and the corresponding positions of the fixed plate and the two cores have different shapes of cavities to form inner linings Cavities and product cavities, the supporting plate is provided with an ejection mechanism for driving the product to be ejected, and the cavity fixing plate is connected with a rotating mechanism. When the product is ejected, the rotating mechanism drives the cavity fixing plate to rotate 180° Realize the exchange of the upper and lower core positions.

Further, the ejector mechanism includes a ejector rod arranged in the movable template, and the outer end of the ejector rod passes through the middle part of the core and faces the inner lining cavity or the product cavity correspondingly, and the inner lining cavity and the product cavity are both arranged correspondingly. There is a ejector rod, and the ejector rod is provided with a ejector rod return spring. One end of the ejector rod return spring acts on the ejector rod and the other end acts on the core. The ejector driving mechanism that moves one side of the product cavity.

Further, an outer wall cavity plate is provided on the outside of the product cavity, and a lifter pin is arranged inside the fixed template, one end of the lifter pin acts on the outer wall cavity plate, and the other end is fixed to the fixed template by a lifter spring In order to realize product cavity type.

Further, there is a limit sleeve between the fixed template and the cavity fixing plate, and a limit rod is arranged in the limit sleeve, and one end of the limit rod is fixed on the cavity fixing plate, and the limit sleeve is provided with a limit rod. The table top matched with the end of the rod, when the end of the stop rod is in contact with the table top, the stop rod is driven to realize the separation of the core fixing plate and the cavity fixing plate.

Further, the rear side of the supporting plate is provided with a movable mold seat plate, and the rotating mechanism includes a rotating rod with one end fixedly connected to the cavity fixing plate, and a gear is provided at one end of the rotating rod at the movable mold seat plate. The gear is matched with a toothed rack driven by the air cylinder to realize the rotation of the rotating rod.

Further, the push rod driving mechanism is a piston push rod driven by an air cylinder.

Further, the fixed template is provided with a sprue sleeve, and a sprue spring is provided on the outer side of the sprue sleeve, and one end of the sprue spring acts on the fixed template and the other end acts on the front end of the sprue sleeve. The inner and rear side of the sprue sleeve is provided with a spring ejector rod for realizing ejection of the sprue.

Further, a steel ball seat is provided at the end of the movable formwork facing the supporting plate, a steel ball is arranged in the steel ball seat, a groove is provided on the supporting plate to cooperate with the steel ball, and a steel ball seat is fixed on the rear side of the steel ball seat. A positioning spring in the template, one end of the positioning spring acts on the steel ball seat at the other end of the movable template.

Further, the fixed platen, the cavity fixed plate, the core fixed plate, and the movable platen are provided with through guide posts.

Compared with the prior art, the utility model has the following beneficial effects: the utility model has a simple structure, and the two-step injection molding process can be simultaneously completed in the same pair of molds by using the cooperation of the limiting mechanism, the rotating mechanism and the ejecting mechanism. Different realization of two-color injection molding, greatly improving work efficiency.

Description of drawings

Fig. 1 is a structural schematic diagram of the utility model product structure.

Fig. 2 is a schematic diagram of the structure of the product of the utility model.

Fig. 3 is a schematic diagram of the top view layout of the injection mold of the present invention.

Fig. 4 is a schematic cross-sectional view of A-A in Fig. 3 of the present utility model.

Fig. 5 is a schematic cross-sectional view of B-B in Fig. 3 of the present utility model.

detailed description

Below in conjunction with accompanying drawing and specific embodiment, the utility model is described in further detail.

As shown in Figures 1 to 5, the core two-process interchangeable two-color injection mold in this embodiment includes a fixed plate 10, a cavity fixed plate 20, a core fixed plate 30, a movable plate 40, and a supporting plate. 50 and movable mold seat plate 60.

In this embodiment, an outer wall cavity insert 210 is arranged between the fixed template 10 and the cavity fixing plate 20, and two pairs of longitudinally arranged cores 220 are arranged on the core fixing plate 20, and the outer wall cavity insert 210 and the mold cavity A mold cavity is formed between the core 220 and the fixed plate 10. In this embodiment, the perspective of FIG. The cavity is used to form the lining part 101, which is the cavity of the lining.

The supporting plate is provided with an ejection mechanism for driving the ejection of the product, and the cavity fixing plate is connected with a rotating mechanism. When the product is ejected, the rotating mechanism drives the cavity fixing plate to rotate 180° to realize the exchange of the positions of the upper and lower cores .

In this embodiment, the fixed formwork 10 adopts a latent gate, and a gate spring 111 is set on the outer side of the sprue sleeve 110. One end of the gate spring acts on the fixed formwork and the other end acts on the front end of the sprue sleeve. The sprue bushing 110 is provided with a spring ejector rod 112 on the inner rear side for realizing sprue ejection.

The outer side of the product cavity is provided with an outer wall cavity plate 310, and the fixed template 10 is provided with a lifter pin 120, one end of the lifter pin 120 acts on the outer wall cavity plate 310, and the other end is fixed by a lifter spring 121 In the fixed template 10 to realize product cavity type.

There is a limit sleeve 130 between the fixed template 10 and the cavity fixed plate 20, and a limit rod 131 is arranged in the limit sleeve 130, and one end of the limit rod 131 is fixed on the cavity fixed plate 20, and the limit sleeve is set There is a table top matched with the end of the limiting rod, and when the end of the limiting rod is in contact with the table, the limiting rod is driven to separate the core fixing plate 30 from the cavity fixing plate 20 .

The ejector mechanism includes a ejector pin 410 arranged in the movable template 40, and the outer end of the ejector pin 410 passes through the middle part of the core 220 and faces to the inner lining cavity or the product cavity, and the inner lining cavity and the product cavity Correspondingly, ejector rods are provided, and the ejector rod 410 is provided with an ejector rod return spring 411. One end of the ejector rod return spring 411 acts on the ejector rod and the other end acts on the core, and is located on the supporting plate on one side of the product cavity. There is an ejector driving mechanism that drives the ejector to move to the side of the product cavity.

In this embodiment, in order to realize simultaneous ejection of the products in the two upper cavities, the horizontally adjacent ejector rods 410 in this embodiment are connected by a bridge plate 412, and the ejector rod driving mechanism is a piston driven by an air cylinder. The push rod 413, the piston push rod 413 acts on the bridge plate 412 so that the bridge plate 412 is used to synchronously push the two push rods 410 to move laterally.

In this embodiment, the rotating mechanism includes a rotating rod 70 with one end fixedly connected to the cavity fixing plate. The rotating rod 70 is provided with a gear 710 at one end of the movable mold seat plate 60. The gear 710 is matched with a cylinder 721 The driven rack 720 is used to realize the rotation of the rotating rod.

In order to better realize the positioning when the mold rotates, the movable template 40 is provided with a steel ball seat 420 towards the end of the supporting plate, the steel ball seat 420 is provided with a steel ball 421, and the supporting plate 50 is provided with a steel ball 421 The matching groove 422 and the rear side of the steel ball seat are provided with a positioning spring 423 fixed in the movable template. One end of the positioning spring 423 acts on the movable template 40 and the other end acts on the steel ball seat 420 .

In addition, the fixed platen, cavity fixed plate, core fixed plate, and movable platen are provided with through guide pillars 114 to facilitate guidance.

The working steps are as follows,

(1) When starting injection molding, the longitudinal injection seat of the injection molding machine moves forward and presses down the sprue sleeve 110. At this time, there is a formed lining in the product cavity, and there is no injection molding in the lining cavity. After the outer wall of the product is injection molded, inject When the seat retreats, the sprue sleeve rebounds and breaks away from the main runner, and the horizontal injection seat is injected into the lining cavity to form the lining part 101, and then also retreats.

(2) The mold is opened. Under the action of the ejector pin 120 and the ejector pin spring 121, the mold is divided along the I-I parting surface in Figure 4. When the product lining cavity is in the mold parting position, the latent gate is pushed by the spring. The material rod 112 is cut off and pushed out, and the product that has completed the outer wall molding is separated from the fixed plate.

(3) With the separation of the fixed template 10 and the cavity fixing plate 20 during the mold opening, the limit rod 131 is also separated. When the limit rod 131 is about to touch the bottom of the limit sleeve 130, the mold opening action is suspended. When the mold opening distance is just in line with the demoulding space of the product and the runner, the ejector mechanism works, and the piston ejector rod 413 corresponding to the product cavity acts on the bridge plate 412, so that the bridge plate 412 synchronously pushes the two ejector rods 410 in the horizontal direction to overcome the ejector. The rod return spring 411 moves, and the piston push rod 413 returns immediately after the product is ejected, and the bridge plate 412 and the push rod 410 reset under the action of the spring.

(4) After the product is ejected, the mold continues to open, the limit sleeve 130 and the limit rod 131 drive the cavity fixing plate 20 to move, and the II-II parting surface is divided. When the core 220 retreats to the cavity fixing plate 20 When it is down, the rotating mechanism works, and the cylinder 721 pushes the rack 720, and drives the core fixing plate 20 to rotate 180° through the 70 rotating rod, and completes the exchange of the two working positions of the core 220, and the core 220 marked with the product liner turns to In the product cavity station, the mold can be closed for the next cycle of production.

(5) When the core fixing plate 20 rotates next time, the air cylinder 721 works and pulls the rack 720 to exchange back and forth, so as to accurately realize the swing of the core fixing plate 20 .

The above descriptions are only preferred embodiments of the present utility model, and all equivalent changes and modifications made according to the patent scope of the present utility model shall fall within the scope of the present utility model.

Claims (9)

1. a kind of core two-step exchanges double-shot moulding mould, it is characterised in that the solid plate, die cavity including side setting is fixed Plate, core fixing plate, moving platen and supporting plate, are provided with outer wall die cavity mold insert between the solid plate and impression bolster, core is solid Fixed board is provided with the core of at least one pair of longitudinal arrangement, and solid plate has the cavity of different profiles respectively from two core corresponding positions To form liner die cavity and product die cavity, the supporting plate is provided with the ejecting mechanism for driving product to eject, and the die cavity is solid Fixed board is connected with rotating mechanism, and after product is ejected, rotating mechanism drives impression bolster to rotate 180 ° and realizes upper and lower insert position Exchange.

2. a kind of core two-step according to claim 1 exchanges double-shot moulding mould, it is characterised in that ejecting mechanism includes The push rod being arranged in moving platen, the push rod are toward liner die cavity or product die cavity, interior through outer end correspondence in the middle part of core Lining die cavity and product die cavity are correspondingly arranged on push rod, and the push rod is externally provided with push rod back-moving spring, the push rod back-moving spring One end acts on the push rod other end and acts on core, and the supporting plate positioned at product die cavity side is provided with driving push rod to product die cavity The top rod driving mechanism of one side shifting.

3. a kind of core two-step according to claim 2 exchanges double-shot moulding mould, it is characterised in that the product die cavity Outside be provided with outer wall cavity plate, ejector pin is provided with the solid plate, one end of the ejector pin acts on outer wall cavity plate, another End Jing ejector pin springs are fixed in solid plate to realize product die cavity typing.

4. a kind of core two-step according to claim 3 exchanges double-shot moulding mould, it is characterised in that solid plate and die cavity There is between fixed plate stop collar, gag lever post in stop collar, is provided with, described gag lever post one end is fixed on impression bolster, described Spacing to be arranged with the table top coordinated with spacing boom end, when spacing boom end is with deck contact, gag lever post drives and realizes that core is solid Fixed board is separated with impression bolster.

5. a kind of core two-step according to Claims 1 to 4 any claim exchanges double-shot moulding mould, and its feature exists In, Bottom clamp plate is provided with rear side of the supporting plate, the rotating mechanism includes that one end is fixedly connected on the bull stick on impression bolster, The bull stick is provided with gear positioned at Bottom clamp plate one end, and the gear is combined with one and is turned with realizing bull stick by the tooth bar of air cylinder driven It is dynamic.

6. a kind of core two-step according to claim 2 exchanges double-shot moulding mould, it is characterised in that the top rod driving Mechanism is by the piston mandril of air cylinder driven.

7. a kind of core two-step according to claim 2 exchanges double-shot moulding mould, it is characterised in that on the solid plate Sprue bush is provided with, cast gate spring on the outside of the sprue bush, is arranged with, the cast gate spring one end acts on solid plate other end work For sprue bush front side end, in the sprue bush, rear side is provided with for realizing the spring ejector beam of cast gate ejection.

8. a kind of core two-step according to claim 1 exchanges double-shot moulding mould, it is characterised in that the moving platen court Steel ball seat is provided with to one end of supporting plate, steel ball in steel ball seat, is provided with, supporting plate is provided with the groove coordinated with steel ball, on rear side of steel ball seat The retaining spring being fixed in moving platen is provided with, described retaining spring one end is acted in moving platen other end effect steel ball seat.

9. a kind of core two-step according to claim 2 exchanges double-shot moulding mould, it is characterised in that the solid plate, The guide pillar for running through is provided with impression bolster, core fixing plate, moving platen.