CN115107223A

CN115107223A - Die inner cavity conversion device and double-color forming die

Info

Publication number: CN115107223A
Application number: CN202210733965.6A
Authority: CN
Inventors: 张少飞; 侯巧; 曾举; 肖仕林
Original assignee: Senjun Precision Manufacturing Shenzhen Co ltd
Current assignee: Senjun Precision Manufacturing Shenzhen Co ltd
Priority date: 2022-06-24
Filing date: 2022-06-24
Publication date: 2022-09-27

Abstract

The application discloses an in-mold cavity conversion device and a two-color forming mold, wherein the in-mold cavity conversion device comprises a fixed mold core, a movable mold core, a driving mechanism and a guide strip, and a first color cavity and a second color cavity are arranged at the joint of the movable mold core and the fixed mold core; the guide strip is provided with a first inclined surface, a first slide block is arranged on the first inclined surface in a sliding mode, a second inclined surface is arranged on the first slide block, a movable mold core insert is arranged in the movable mold core and is connected with the second inclined surface in a sliding mode, a fixed mold core insert is arranged in the fixed mold core, and the fixed mold core insert and the movable mold core insert respectively extend into the second color cavity; when the driving mechanism drives the guide strip to move back and forth, the guide strip drives the first sliding block to move up and down, and the first sliding block drives the movable mold core insert and the fixed mold core insert to move left and right, so that the first color cavity and the second color cavity are mutually converted. The application can realize the interconversion of the double-color cavities, and improve the processing efficiency and the yield of double-color injection molding.

Description

Die inner cavity conversion device and double-color forming die

Technical Field

The application belongs to the field of injection molds, and more particularly relates to an in-mold cavity conversion device and a double-color forming mold.

Background

With the development of society, people pursue the practicability of products, and simultaneously, the requirements on the appearance of the products are improved, and the double-color plastic clothes rack is one of the double-color plastic clothes racks; a double-color plastic clothes hanger is characterized in that one clothes hanger is formed by injection molding of plastic materials with two colors.

Fig. 1 and 2 show a two-color molded article hanger, which is formed by injection molding two colors of plastic, including a first molded article S1 and a second molded article S2. Currently, a double-color forming mold special for injection molding of the product is not available in the industry, and in order to produce the product, the mode adopted at present is generally a beer-sleeving injection molding mode, namely, molding of a first-color plastic part is firstly carried out, then the first-color forming mold is opened, and then the first-color plastic part product is placed into a second-color injection molding mold through a manipulator or manually for injection molding to obtain a double-color plastic part product. This approach has the following problems:

1. the first color plastic part product is placed manually or by a manipulator and then subjected to second color plastic injection molding, so that the injection molding time period is longer, and the processing efficiency is very low.

2. The defective product rate of the plastic part product is high, and the first color plastic part product is often damaged and crushed by pressure;

3. the overall dimension of the mold is large, and large injection molding machine equipment is needed for production, so that the input cost of processing and molding is increased;

4. there is the potential safety hazard when artifical or manipulator place first color and mould a goods, probably causes the injury to manipulator or operating personnel, is unfavorable for the safety in production.

Disclosure of Invention

In order to solve the problems in the prior art, on one hand, the application provides an in-mold cavity conversion device which comprises a fixed mold core, a movable mold core, a driving mechanism and a guide strip, wherein the movable mold core can be connected with the fixed mold core, and a first color cavity and a second color cavity which are communicated with each other are arranged at the joint of the movable mold core and the fixed mold core;

the output end of the driving mechanism is connected with the guide strip, the driving mechanism can drive the guide strip to move back and forth, a first inclined surface is arranged on the guide strip, a first sliding block is arranged on the first inclined surface in a sliding mode, one end of the first sliding block extends into the movable mold core, the first sliding block can slide in the movable mold core in a lifting mode, a second inclined surface is arranged on the first sliding block, a movable mold core insert is arranged in the movable mold core, the movable mold core insert is connected with the second inclined surface in a sliding mode, a fixed mold core insert is arranged in the fixed mold core, the fixed mold core insert can be connected with the movable mold core insert, and the fixed mold core insert and the movable mold core insert can extend into the second mold cavity;

when the driving mechanism drives the guide strip to move back and forth, the guide strip drives the first sliding block to move up and down on the first inclined surface, and meanwhile, the first sliding block drives the movable mold core insert and the fixed mold core insert to move left and right on the second inclined surface, so that the first color cavity and the second color cavity are mutually converted.

As a further improvement of this application, follow on the first inclined plane be equipped with first draw-in groove on the slip direction of first slider, be equipped with the second draw-in groove on the first slider, first draw-in groove with second draw-in groove slip joint.

As a further improvement of the application, the second inclined plane is provided with a sliding guide rail in the sliding direction of the movable mold core insert, the movable mold core insert is provided with a third clamping groove matched with the sliding guide rail, and the third clamping groove is in sliding clamping connection with the sliding guide rail.

As a further improvement of the application, a bump is arranged on the matching surface of the moving core insert and the fixed core insert, a fourth clamping groove is arranged on the matching surface of the fixed core insert and the moving core insert, and the fourth clamping groove is matched with the bump in shape and size;

when the fixed die core is connected with the movable die core, the convex block can be inserted into the fourth clamping groove, so that the fixed die core insert is in limit connection with the movable die core insert.

As a further improvement of the application, two first guide blocks are arranged on the movable mold core, the two first guide blocks are respectively abutted against two ends of the movable mold core insert, two second guide blocks are arranged on the fixed mold core, and the two second guide blocks are respectively abutted against two ends of the fixed mold core insert;

when the driving mechanism drives the guide strip to move back and forth, the movable mold core insert slides left and right on the first guide block, and the fixed mold core insert slides left and right on the second guide block.

As a further improvement of the application, the guide strip is provided with a wear-resistant block, and the movable mold core is in sliding connection with the wear-resistant block.

On the other hand, this application still provides a double-colored forming die including above-mentioned device, still includes first colored runner mechanism and second colored runner mechanism, first colored runner mechanism includes first colored nozzle, first colored nozzle passes stretch into behind the cover half core in the first colored die cavity, second colored runner mechanism includes the second colored nozzle, the second colored nozzle with second colored die cavity intercommunication.

As a further improvement of the application, a second color flow channel is arranged at the joint of the fixed mold core insert and the movable mold core insert, the second color nozzle is connected with the second color flow channel, a glue outlet hole is arranged on the second color flow channel, the glue outlet hole is communicated with the second color cavity, a first color cavity insert is arranged on the movable mold core, the first color cavity insert extends into the first color cavity, and a blocking block is arranged at the position, corresponding to the glue outlet hole, on the first color cavity insert;

when the first color cavity is subjected to injection molding, the blocking block is abutted against the glue outlet hole and can block the glue outlet hole;

when the first sliding block drives the movable mold core insert and the fixed mold core insert to move left and right, the blocking block is separated from the glue outlet hole, so that the glue outlet hole is communicated with the second color cavity.

As a further improvement of the application, the die further comprises a die blank, wherein the movable die core and the fixed die core are respectively installed in the die blank, the driving mechanism comprises a hydraulic oil cylinder and a fixed block, an installation block is arranged on the die blank, the hydraulic oil cylinder is connected with the installation block, the output end of the hydraulic oil cylinder is connected with the fixed block, and the fixed block is connected with the guide strip;

the installation block is provided with an inductive switch, the fixed block is provided with a control rod, and the control rod can be connected with the inductive switch.

As a further improvement of the application, the number of the fixed die core, the movable die core and the guide strips is two respectively, and the guide strips are connected with the driving mechanism respectively.

Compared with the prior art, the beneficial effect of this application is:

according to the double-color injection molding device, the guide strip, the first sliding block, the movable mold core insert and the fixed mold core insert move in a matched mode, and the mutual conversion of double-color cavities can be achieved in the fixed mold core and the movable mold core, so that the molding requirement of double-color plastic parts is met, and the injection molding efficiency and the yield are improved; the integral structure is compact, the injection molding machine is suitable for a relatively small injection molding machine, and the input cost of machining and molding is reduced; the product is not required to be placed manually or by a mechanical arm, and the safety production is facilitated.

Specifically, after injection molding is completed in the first color cavity, the driving mechanism works to drive the guide strip to move back and forth, the guide strip drives the first sliding block to move up and down on the first inclined plane, meanwhile, the first sliding block drives the moving die core insert and the fixed die core insert to move left and right on the second inclined plane, so that the moving die core insert and the fixed die core insert are separated from the first color cavity, a second color cavity is formed between the moving die core insert and the fixed die core insert as well as the first color plastic part product, the conversion of the cavity of the in-die product is realized, and then the second color injection molding is performed.

Drawings

In order to illustrate the present application or prior art more clearly, a brief description of the drawings needed for the description of the embodiments or prior art will be given below, it being clear that the drawings in the following description are some embodiments of the present application and that other drawings can be derived from them by a person skilled in the art without inventive effort.

FIG. 1 is a schematic structural diagram of a two-color plastic part product produced by using an embodiment of the application;

FIG. 2 is a schematic view of the cross-sectional structure A-A in FIG. 1;

FIG. 3 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 4 is a schematic structural diagram of an in-mold cavity switching mechanism in an embodiment of the application;

FIG. 5 is a schematic exploded view of an in-mold cavity switching mechanism in an embodiment of the present application;

FIG. 6 is a schematic view of a stationary mold core insert and a second guide block according to an embodiment of the present application;

FIG. 7 is a schematic top view of an in-mold cavity switching mechanism in an embodiment of the present application;

FIG. 8 is a schematic view of the cross-sectional structure C-C of FIG. 7;

FIG. 9 is an enlarged view of the portion B of FIG. 5;

fig. 10 is a schematic view of a first color cavity insert structure according to an embodiment of the present application.

Detailed Description

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions. The terms "first," "second," and the like in the description and claims of this application or in the above-described drawings are used for distinguishing between different objects and not for describing a particular order.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings.

As shown in fig. 3-10, a two-color molding die comprises a die blank 1 and an in-die cavity switching mechanism, wherein the in-die cavity switching mechanism is used for realizing the mutual switching of two-color cavities in the die, so that the requirement of two-color injection molding is met. The in-mold cavity switching mechanism comprises a fixed mold core 2, a movable mold core 3, a driving mechanism and a guide strip 4, after the mold is closed, the movable mold core 3 can be connected with the fixed mold core 2 in a sealing manner, and a first color cavity 5 and a second color cavity 9 are arranged at the joint of the movable mold core 3 and the fixed mold core 2; actuating mechanism's output is connected with gib block 4, and actuating mechanism can drive the 4 seesaws of gib block, be equipped with first inclined plane 41 on the gib block 4, it is equipped with first slider 6 to slide on first inclined plane 41, the one end of first slider 6 stretches into in the movable mould core 3, and first slider 6 can go up and down to slide in the movable mould core 3, be equipped with second inclined plane 61 on the first slider 6, be equipped with movable mould core mold insert 7 in the movable mould core 3, movable mould core mold insert 7 and second inclined plane 61 sliding connection, be equipped with cover half core mold insert 8 in the cover half core 2, cover half core mold insert 8 can be connected with movable mould core mold insert 7, and cover half core mold insert 8 can move along with movable mould core mold insert 7, cover half core mold insert 8 and movable mould core mold insert 7 can stretch into in the second color cavity 9.

Before working, the double-color forming die is installed on an injection molding machine, and a driving mechanism is connected with a control mechanism of the injection molding machine; when the double-color forming mold works, the injection molding machine controls the mold closing to complete first-color injection molding in a first-color cavity 5, after the first-color injection molding is completed, the driving mechanism is controlled to work to drive the guide strip 4 to move back and forth, the guide strip 4 drives the first slide block 6 to move up and down on the first inclined surface 41 in the process of moving back and forth, meanwhile, the first slide block 6 drives the moving mold core insert 7 and the fixed mold core insert 8 to move left and right on the second inclined surface 61, so that the moving mold core insert 7 and the fixed mold core insert 8 are separated from a first-color plastic product in the first-color cavity 5, and at the moment, a second-color cavity 9 is formed between the moving mold core insert 7 and the fixed mold core insert 8 and the first-color plastic product, so that the in-mold double-color cavity conversion is realized; after which a second-color injection molding is performed in the second-color cavity 9.

The double-color forming die can complete the conversion of the double-color injection molding cavity in a die closing state, greatly shorten the time period of double-color injection molding and improve the processing efficiency; on the other hand, the double-color forming die does not need to be manually or mechanically placed for placing products during working, can greatly reduce defective products caused by manual participation, and is also favorable for safety production.

The first inclined plane 41 is arranged at one end of the guide strip 4 far away from the driving mechanism, the inclined direction of the first inclined plane 41 gradually decreases from one end close to the driving mechanism to one end far away from the driving mechanism, a first clamping groove 42 is arranged on the first inclined plane 41 along the sliding direction of the first sliding block 6, a second clamping groove 62 is arranged on the matching surface of the first sliding block 6 and the first inclined plane 41, and the first clamping groove 42 is in sliding clamping connection with the second clamping groove 62; the movement direction of the first sliding block 6 can be limited and guided by arranging the first clamping groove 42 and the second clamping groove 62, and the transmission precision is improved. Specifically, when the driving mechanism drives the guide strip 4 to move back and forth, the first slide block 6 is blocked by the moving mold core 3 and cannot move back and forth together with the guide strip 4; in the moving process of the guide bar 4, the first inclined surface 41 moves synchronously, and the first sliding block 6 can only move up and down on the first inclined surface 41 due to the clamping of the first clamping groove 42 and the second clamping groove 62 and the matching effect of the inclined surfaces.

The second inclined surface 61 is provided on the side wall of the first slider 6, the inclined direction of the second inclined surface 61 is inclined from left to right or from right to left, a slide rail 63 is provided on the second inclined surface 61 along the sliding direction of the moving core insert 7, a third groove 71 adapted to the slide rail 63 is provided on the moving core insert 7, and the third groove 71 is slidably engaged with the slide rail 63. The moving direction of the movable mold core insert 7 can be limited and guided by arranging the sliding guide rail 63 and the third clamping groove 71, and the transmission precision is improved. Specifically, when the first slide 6 moves up and down on the first slope 41, the slide rail 63 moves up and down in synchronization with the first slide 6, and the moving core insert 7 is blocked by the fixed core insert 8 and the moving core 3 and cannot move up and down together with the first slide 6; the first slide block 6 drives the second inclined surface 61 and the sliding guide rail 63 to move synchronously in the moving process, and the sliding guide rail 63 is clamped with the third clamping groove 71, so that the movable mold core insert 7 can only move left and right on the second inclined surface 61 under the action of inclined surface matching.

In this embodiment, the number of the sliding guide rail 63 and the number of the third clamping grooves 71 are two, and the cross sections of the sliding guide rail 63 and the third clamping grooves 71 are both in a shape of "T"; in other embodiments, the number of the sliding guide 63 and the third slot 71 may be any other number, and the shape of the sliding guide 63 and the third slot 71 may be any other shape that can realize the sliding clamping in the prior art, for example: c-shaped, L-shaped, etc.

A convex block 72 is arranged on the matching surface of the movable mold core insert 7 and the fixed mold core insert 8, a fourth clamping groove 81 is arranged on the matching surface of the fixed mold core insert 8 and the movable mold core insert 7, and the fourth clamping groove 81 is matched with the convex block 72 in shape and size; after the double-color forming die is assembled, the fixed die core 2 is hermetically connected with the movable die core 3; at this time, the bump 72 can be inserted into the fourth clamping groove 81, so that the fixed mold core insert 8 and the moving mold core insert 7 are in limit connection, and when the first slider 6 drives the moving mold core insert 7 to move left and right, the fixed mold core insert 8 can move synchronously with the moving mold core insert 7, thereby realizing the interconversion of the two-color cavities in the mold.

Install two first guide blocks 10 on the movable mould core 3, two first guide blocks 10 respectively with the both ends butt of movable mould core mold insert 7, can be with the spacing installation of movable mould core mold insert 7 in movable mould core 3 through two first guide blocks 10, ensure the die sinking after, movable mould core mold insert 7 can not fall out movable mould core 3. Two second guide blocks 11 are installed on the fixed mold core 2, the two second guide blocks 11 are respectively abutted to two ends of the fixed mold core insert 8, the fixed mold core insert 8 can be installed in the fixed mold core 2 in a limiting mode through the two second guide blocks 11, and after the mold is opened, the fixed mold core insert 8 cannot fall out of the fixed mold core 2. In a die assembly state, when the first slide block 6 drives the moving die core insert 7 to move left and right, the moving die core insert 7 slides left and right on the first guide block 10, and the fixed die core insert 8 slides left and right on the second guide block 11; by providing the first guide block 10 and the second guide block 11, the moving directions of the movable core insert 7 and the fixed core insert 8 can be guided and limited.

In the process that the driving mechanism drives the guide strip 4 to move, the guide strip 4 is in sliding friction with the lower surface of the movable mold core 3; in order to reduce the abrasion of the guide strips 4 and prolong the service life, a plurality of wear-resistant blocks 12 are arranged on the matching surface of the guide strips 4 and the movable mould core 3, and the wear-resistant blocks 12 are in sliding connection with the movable mould core 3 during operation, so that the abrasion-resistant strength of the guide strips 4 is improved, and the service life is prolonged.

The driving mechanism comprises a hydraulic oil cylinder 13 and a fixing block 14, a mounting block 15 is fixedly mounted on the side wall of the die blank 1, the hydraulic oil cylinder 13 is fixedly mounted on the mounting block 15 through screws, a piston of the hydraulic oil cylinder 13 is connected with the fixing block 14, and the fixing block 14 is fixedly connected with one end, far away from the first inclined surface 41, of the guide strip 4. When the device works, the hydraulic oil cylinder 13 drives the fixed block 14 to move back and forth, and the fixed block 14 drives the guide strips 4 to move synchronously.

In order to realize accurate control of the driving stroke of the hydraulic oil cylinder 13, two inductive switches 16 are fixedly arranged on the mounting block 15, and a control rod 17 is arranged on the fixing block 14; in the process of driving the fixed block 14 to move by the hydraulic oil cylinder 13, the control rod 17 can be respectively connected with the two inductive switches 16. When the injection molding machine works, the hydraulic oil cylinder 13 and the inductive switch 16 are respectively connected with a control mechanism of the injection molding machine; when the conversion of the mold inner cavity is needed, the control mechanism of the injection molding machine controls the hydraulic oil cylinder 13 to work to drive the fixed block 14 to move back and forth, the control rod 17 moves synchronously with the fixed block 14, when the control rod 17 moves forward or retreats to a certain position, the control rod 17 can be connected with the corresponding inductive switch 16, the inductive switch 16 feeds back a signal to the control mechanism of the injection molding machine, the control mechanism of the injection molding machine immediately controls the hydraulic oil cylinder 13 to stop working, so that the fixed block 14 stops moving, and the conversion between the first color cavity 5 and the second color cavity 9 is just completed in the mold at the moment.

The specific process of completing the conversion of the molding cavity in the mold by the double-color molding mold is as follows:

the two-color forming mold is first mounted on an injection molding machine, and the hydraulic oil cylinder 13 and the inductive switch 16 are connected to the control mechanism of the injection molding machine.

When injection molding is carried out, the double-color forming die is firstly controlled to be closed through the injection molding machine, the convex block 72 is inserted into the fourth clamping groove 81, so that the fixed die core insert 8 is in limit connection with the movable die core insert 7, and the injection molding machine discharges materials to complete injection molding of a first color plastic part product in the first color cavity 5.

After the first color injection molding is finished, a first color plastic part product is molded in the first color cavity 5; then the control mechanism of the injection molding machine controls the hydraulic oil cylinder 13 to start working, the hydraulic oil cylinder 13 drives the fixed block 14 and the guide strip 4 to move backwards until the control rod 17 is connected with the rear inductive switch 16, and the control mechanism of the injection molding machine controls the hydraulic oil cylinder 13 to stop working; during the backward movement of the guide strip 4, the first slot 42 slides in the second slot 62, so as to drive the first slider 6 to move downward on the first inclined surface 41; in the process of downward movement, the first slide block 6 drives the second inclined surface 61 and the slide guide rail 63 to synchronously move, the slide guide rail 63 slides in the third clamping groove 71 to drive the moving core insert 7 to move leftwards or rightwards, and the moving core insert 7 and the fixed core insert 8 synchronously move along with the moving core insert 7 under the limit of the convex block 72 and the fourth clamping groove 81, so that the moving core insert 7 and the fixed core insert 8 are separated from the first color plastic product, and at the moment, a second color cavity 9 is formed between the moving core insert 7 and the fixed core insert 8 and the first color plastic product, and the conversion from the first color cavity 5 to the second color cavity 9 is realized; and the injection molding machine discharges materials to complete the injection molding of the second plastic part product in the second color cavity 9.

After the second-color injection molding is finished, the injection molding machine controls the mold opening, and an operator takes away the injection molded product; when the first color injection molding of the next product is carried out, after the injection molding machine controls the die assembly, the injection molding machine control mechanism controls the hydraulic oil cylinder 13 to start working, the hydraulic oil cylinder 13 provides reverse driving force to drive the fixing block 14 and the guide strip 4 to move forwards until the control rod 17 is connected with the front induction switch 16, and the injection molding machine control mechanism controls the hydraulic oil cylinder 13 to stop working; in the forward movement process of the guide strip 4, the first slide block 6 is driven to move upwards on the first inclined surface 41 to drive the moving die core insert 7 and the fixed die core insert 8 to reset leftwards or rightwards, so that the second color cavity 9 disappears, and the moving die core insert 7 and the fixed die core insert 8 respectively extend into the first color cavity 5 to realize the conversion from the second color cavity 9 to the first color cavity 5; the injection molding machine discharges materials to complete the injection molding of the first color plastic part product in the first color cavity 5.

The processing process is circulated, so that the mutual conversion of the first color cavity 5 and the second color cavity 9 is completed in the die, and the processing requirement of a double-color plastic part product is met.

In the embodiment, the number of the fixed die core 2, the movable die core 3 and the guide strips 4 is two, and the two guide strips 4 are connected with the fixed block 14 respectively; namely, the mold opening of the double-color forming mold can form two double-color plastic products at one time. In other embodiments, the mold can be opened to mold N two-color plastic products at a time, where N is any positive integer.

A first color flow channel mechanism and a second color flow channel mechanism are arranged in the double-color forming die, the first color flow channel mechanism comprises a first color nozzle, the first color nozzle is fixedly arranged in the die blank 1, one end of the first color nozzle extends to the outer side of the die blank, and the other end of the first color nozzle penetrates through the fixed die core and then extends into a first color cavity 5; during operation, one end of the first nozzle, which is far away from the first color cavity 5, is connected with a discharging mechanism of the injection molding machine, and during first color injection molding, the discharged material of the injection molding machine enters the first color cavity 5 through the first nozzle to complete the first color injection molding.

The second color runner mechanism comprises a second color nozzle 18, a second color runner 19 is arranged at the joint of the fixed mold core insert 8 and the movable mold core insert 7, the second color nozzle 18 is arranged in the mold blank 1, one end of the second color nozzle 18 extends to the outer side of the mold blank 1, the other end of the second color nozzle passes through the fixed mold core 2 and then extends into the second color runner 19, a glue outlet 20 is formed in the second color runner 19, the glue outlet 20 is communicated with the second color cavity 9, a first color cavity insert 21 is arranged on the movable mold core 3, the first color cavity insert 21 extends into the first color cavity 5, a sealing block 22 is arranged at the corresponding position of the glue outlet 20 on the first color cavity insert 21, the sealing block 22 is used for sealing the glue outlet 20, and a glue material is prevented from flowing into the second color runner 9 during first color injection molding.

The injection molding process of the double-color molding die is as follows:

when the first-color injection molding is carried out, the blocking block 22 on the first-color cavity insert 21 is abutted against the glue outlet hole 20 to block the glue outlet hole 20; and then the injection molding machine discharges materials, and the materials enter the first color cavity 5 through the first color nozzle to finish the first color injection molding.

After injection molding of a first color molding product is completed in the first color cavity 5, the hydraulic oil cylinder 13 is controlled to work, the guide strip 4 is driven to move backwards, the guide strip 4 drives the first slide block 6 to move downwards, the first slide block 6 drives the movable mold core insert 7 and the fixed mold core insert 8 to move towards the direction far away from the first color cavity insert 21, so that the blocking block 22 is separated from the glue outlet hole 20, a second color cavity 9 is formed between the fixed mold core insert 8 and the movable mold core insert 7 and the first color molding product, the glue outlet hole 20 is communicated with the second color cavity 9, then the discharge of the injection molding machine enters the second color flow channel 19 through the second color nozzle 18, and finally the glue outlet hole 20 enters the second color cavity 9 to complete second color injection molding.

It is to be understood that the above-described embodiments are merely illustrative of some, but not restrictive, of the broad invention, and that the appended drawings illustrate preferred embodiments of the invention and do not limit the scope of the invention. This application is capable of embodiments in many different forms and is provided for the purpose of providing a more thorough understanding of the present disclosure. Although the present application has been described in detail with reference to the foregoing embodiments, it will be apparent to one skilled in the art that the present application may be practiced without modification or with equivalents of some of the features described in the foregoing embodiments. All equivalent structures made by using the contents of the specification and the drawings of the present application are directly or indirectly applied to other related technical fields, and all the equivalent structures are within the protection scope of the present application.

Claims

1. The utility model provides an mould cavity conversion equipment which characterized in that: the movable mold core can be connected with the fixed mold core, and a first color cavity and a second color cavity which are mutually communicated are arranged at the joint of the movable mold core and the fixed mold core;

the output end of the driving mechanism is connected with the guide strip, the driving mechanism can drive the guide strip to move back and forth, a first inclined surface is arranged on the guide strip, a first sliding block is arranged on the first inclined surface in a sliding mode, one end of the first sliding block extends into the movable mould core, the first sliding block can slide in the movable mould core in a lifting mode, a second inclined surface is arranged on the first sliding block, a movable mould core insert is arranged in the movable mould core, the movable mould core insert is connected with the second inclined surface in a sliding mode, a fixed mould core insert is arranged in the fixed mould core, the fixed mould core insert can be connected with the movable mould core insert, and the fixed mould core insert and the movable mould core insert can extend into the second mould cavity;

2. The in-mold cavity transfer device of claim 1, wherein: the first inclined plane is provided with a first clamping groove in the sliding direction of the first sliding block, the first sliding block is provided with a second clamping groove, and the first clamping groove is connected with the second clamping groove in a sliding mode.

3. The in-mold cavity transfer device of claim 2, wherein: and a sliding guide rail is arranged on the second inclined surface along the sliding direction of the movable mold core insert, a third clamping groove matched with the sliding guide rail is arranged on the movable mold core insert, and the third clamping groove is in sliding clamping connection with the sliding guide rail.

4. The in-mold cavity transfer device of claim 1, wherein: a convex block is arranged on the matching surface of the movable mold core insert and the fixed mold core insert, a fourth clamping groove is arranged on the matching surface of the fixed mold core insert and the movable mold core insert, and the fourth clamping groove is matched with the shape and the size of the convex block;

5. The in-mold cavity transfer device of claim 1, wherein: the movable mold core is provided with two first guide blocks which are respectively abutted against two ends of the movable mold core insert, the fixed mold core is provided with two second guide blocks which are respectively abutted against two ends of the fixed mold core insert;

6. The in-mold cavity transfer device according to any of claims 1-5, wherein: the guide strip is provided with a wear-resistant block, and the movable mold core is connected with the wear-resistant block in a sliding manner.

7. A double-colored forming die which characterized in that: the two-color molding die comprises the in-mold cavity switching device according to any one of claims 1 to 6, and further comprises a first color flow channel mechanism and a second color flow channel mechanism, wherein the first color flow channel mechanism comprises a first color nozzle, the first color nozzle penetrates through the fixed mold core and then extends into the first color cavity, the second color flow channel mechanism comprises a second color nozzle, and the second color nozzle is communicated with the second color cavity.

8. The two-color molding die according to claim 7, characterized in that: a second color flow channel is arranged at the joint of the fixed mold core insert and the movable mold core insert, the second color nozzle is connected with the second color flow channel, a glue outlet hole is formed in the second color flow channel and communicated with the second color cavity, a first color cavity insert is arranged on the movable mold core, the first color cavity insert extends into the first color cavity, and a blocking block is arranged at the position, corresponding to the glue outlet hole, of the first color cavity insert;

9. The two-color molding die according to claim 7, characterized in that: the die is characterized by further comprising a die blank, the movable die core and the fixed die core are respectively installed in the die blank, the driving mechanism comprises a hydraulic oil cylinder and a fixed block, an installation block is arranged on the die blank, the hydraulic oil cylinder is connected with the installation block, the output end of the hydraulic oil cylinder is connected with the fixed block, and the fixed block is connected with the guide strip;

10. The two-color molding die according to claim 8 or 9, characterized in that: the fixed die core, the movable die core and the guide strips are respectively two in number, and the two guide strips are respectively connected with the driving mechanism.