CN215882384U

CN215882384U - Injection mold with movable insert

Info

Publication number: CN215882384U
Application number: CN202121337122.1U
Authority: CN
Inventors: 钟国成; 黄小平; 苏坚辉; 王庭枫
Original assignee: Guangdong Wangtu Printing Co ltd
Current assignee: Guangdong Wangtu Printing Co ltd
Priority date: 2021-06-16
Filing date: 2021-06-16
Publication date: 2022-02-22
Anticipated expiration: 2031-06-16

Abstract

An injection mold with a removable insert comprising a front mold assembly and a back mold assembly; the front mold assembly comprises a first front mold part and a second front mold part; the first front module is provided with a movable assembly, and the movable assembly comprises a telescopic piece and an insert; the second front module is provided with a groove, and the groove is provided with a through hole; the sliding end of the first front mould piece can be arranged in the through hole, so that the first front mould piece and the second front mould piece are movably connected to form a front mould assembly, and the groove, the through hole and the sliding end form a front mould cavity; the distance between the right side surface of the groove and the right side surface of the insert is the depth of the front mold cavity; when the front mold assembly and the rear mold assembly are opened, the front mold assembly can be stretched rightwards through the telescopic piece to push the second front mold piece to move rightwards along the outer part of the insert, so that the depth is increased; when the front mold assembly and the rear mold assembly are closed, the rear mold assembly can push the second front mold piece to move leftwards along the insert, the telescopic piece contracts leftwards, and the depth is reduced.

Description

Injection mold with movable insert

Technical Field

The utility model relates to the technical field of injection molds, in particular to an injection mold with a movable insert.

Background

Chinese name of IMD: the in-mold decoration technology, also called coating-free technology, IMD is the current international popular surface decoration technology, the surface hardening transparent thin mold, the middle printing pattern layer and the back injection molding layer can prevent the surface of the product from being scratched and resist friction, and can keep the color bright for a long time and not fade easily.

Before the IMD sheet is injected by an injection mold, the IMD sheet is usually placed in a front mold cavity of the injection mold and fixed, then a front mold and a rear mold of the injection mold are closed, and the IMD sheet can be injected in the mold cavity. However, in the prior art, the depth of the front cavity of the front mold of the injection mold is generally set to about 2MM, so when the IMD sheet is placed in the front cavity for fixing, the IMD sheet falls from the front cavity because the depth of the front cavity is shallow and cannot support the periphery of the IMD sheet. At present, in order to solve the problem of IMD sheet fixation, the depth of a front mold cavity is deepened mostly. However, when the depth of the front mold cavity is increased, the rear film line of the IMD sheet is moved downwards, so that the manufacturing requirement of the IMD sheet is not met.

SUMMERY OF THE UTILITY MODEL

Aiming at the problems in the prior art, the utility model aims to provide an injection mold with a movable insert, which solves the problem of IMD (in-mold decoration) sheet fixation.

In order to achieve the purpose, the utility model adopts the following technical scheme:

an injection mold with a removable insert comprising a front mold assembly and a back mold assembly; the front mold assembly comprises a first front mold part and a second front mold part; the first front module is provided with a movable assembly which is fixedly connected to the right side surface of the telescopic first front module; the movable assembly comprises a telescopic piece and an insert, the connecting end of the insert is fixedly connected with the movable assembly, and the sliding end of the insert extends outwards; the right side surface of the second front module is provided with a groove, and the left side surface of the groove is provided with a through hole; the first front mould part can arrange the sliding end in the through hole, so that the first front mould part and the second front mould part are movably connected to form the front mould assembly, and the groove, the through hole and the sliding end form a front mould cavity; the distance between the right side surface of the groove and the right side surface of the insert is the depth of the front mold cavity; when the front mold assembly and the rear mold assembly are opened, the front mold assembly can be stretched rightwards through the telescopic piece, and the second front mold piece is pushed to move rightwards along the outer part of the insert, so that the depth is increased; when the front mold assembly and the rear mold assembly are closed, the rear mold assembly can push the second front mold piece to move leftwards along the insert, the telescopic piece shrinks leftwards, and the depth becomes smaller.

Preferably, the telescopic member is a spring member.

Preferably, the movable assembly further comprises a first flow field plate and a second flow field plate; the first runner plate is fixedly connected with the first front module, and the second runner is fixedly connected with the first runner plate; an installation groove is formed in the second flow channel plate, and a concave clamping part is arranged at the left end of the installation groove; the connecting end is provided with a convex clamping part corresponding to the concave clamping part; the insert clamps the convex clamping part on the concave clamping part, so that the connecting end is fixedly connected in the mounting groove.

Preferably, a mounting cavity is formed in the left side face of the second front module, and the mounting cavity is communicated with the groove through the through hole; when the first front module and the second front module are connected to form the front module assembly, the movable assembly is sleeved in the mounting cavity.

Preferably, a first flow channel structure is arranged on the left side surface of the first flow channel plate; a second flow channel structure is arranged on the right side face of the second front module and communicated with the groove; the first flow passage structure is in communication with the second flow passage structure when the front mold assembly is closed with the rear mold assembly.

Preferably, the left side surface of the first front module is provided with a connecting cavity, and the connecting cavity is used for installing a sprue bush; a gate of the gate sleeve is in communication with the first flow channel structure.

Preferably, the left side surface of the rear mold component is provided with a rear mold cavity, and when the rear mold component and the front mold component are closed, the rear mold cavity and the front mold cavity form an injection molding cavity.

Compared with the prior art, the embodiment of the utility model has the following beneficial effects:

the depth of the front die cavity is adjusted through the telescopic piece, so that the problem that the IMD sheet falls down from the front die cavity is solved, repeated fixation is avoided, the fixation time is saved, and the production efficiency is improved. Preferably, when the front die cavity is used for closing the film, the front die cavity can be restored to the original depth by pushing the rear die assembly, so that the rear film line is prevented from moving backwards, and the injection molding quality of the IMD sheet is ensured.

Drawings

The drawings are further illustrative of the utility model and the content of the drawings does not constitute any limitation of the utility model.

FIG. 1 is a schematic view of an injection mold according to one embodiment of the present invention;

FIG. 2 is a diagram illustrating the explosion effect of an injection mold according to an embodiment of the present invention;

FIG. 3 is a diagram of the effect of the explosion in the opposite direction of FIG. 2;

FIG. 4 is a cross-sectional view of an injection mold according to one embodiment of the present invention;

FIG. 5 is an enlarged partial view of the dashed circle A in FIG. 4;

FIG. 6 is an explosion effect diagram of a movable assembly of one embodiment of the present invention;

FIG. 7 is a right side structural view of a second front mold piece in accordance with one embodiment of the present invention;

fig. 8 is a schematic diagram of a mold cavity before the groove, the through hole and the sliding end are combined in one embodiment of the utility model.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.

Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to a number of technical features being indicated. Thus, features defined as "first", "second" and "third" may explicitly or implicitly include one or more of the features.

In the preferred embodiment of the present application, as shown in fig. 1 to 8, an injection mold with a removable insert comprises a front mold assembly 1 and a rear mold assembly 2; the front mold assembly 1 comprises a first front mold part 11 and a second front mold part 12; the first front module 11 is provided with a movable assembly 110, and the movable assembly 110 is fixedly connected to the right side surface of the telescopic first front module 11; the movable assembly 110 comprises a telescopic part 112 and an insert 111, wherein the connecting end of the insert 111 is fixedly connected with the movable assembly 110, and the sliding end of the insert extends outwards; a groove 121 is formed in the right side surface of the second front mold part 12, and a through hole 122 is formed in the left side surface of the groove 121; the sliding end of the first front mold part 11 can be arranged in the through hole 122, so that the first front mold part 11 and the second front mold part 12 are movably connected to form the front mold assembly 1, and the groove 121, the through hole 122 and the sliding end form a front mold cavity; the distance between the right side surface of the groove 121 and the right side surface of the insert 111 is the depth of the front mold cavity; when the front mold assembly 1 and the rear mold assembly 2 are in the mold opening state, the front mold assembly 1 can be extended and contracted to the right through the expansion member 112, and the second front mold part 12 is pushed to the right along the outer part of the insert 111, so that the depth is increased; when the front mold assembly 1 and the rear mold assembly 2 are clamped, the rear mold assembly 2 pushes the second front mold part 12 to move leftward along the insert 111, the telescopic member 112 contracts leftward, and the depth becomes smaller.

Specifically, after the first front mold element 11 and the second front mold element 12 are connected to form the front mold assembly 1, the connecting assembly is connected to the inside of the second front mold element 12 in a limited manner, and the sliding end of the insert 111 is inserted into the through hole 122 and forms the front mold cavity together with the groove 121, as shown in fig. 8. The connection assembly is further provided with a telescopic member 112, one end of the telescopic member 112 is fixedly mounted on the connection assembly, and the other end of the telescopic member 112 always pushes the second front module 12 to the right. When the injection mold is in an initial state, the injection mold is in a mold closing state, namely as shown in fig. 1; when in a mold clamping state, the rear mold assembly 2 applies a leftward pressure to the front mold assembly 1, so as to overcome a rightward thrust of the telescopic member 112, and thus the front mold assembly 1 and the rear mold assembly 2 are clamped. When the injection mold needs to perform injection molding on the IMD sheet, firstly, the injection mold needs to perform mold opening, that is, the front mold assembly 1 and the rear mold assembly 2 are separated. Due to the lack of compression of the rear module 2 by the second front module 12, the telescoping member 112 pushes the second front module 12 to the right. When the telescopic member 112 pushes the front module 1 against the second front module, the first front module 11 is stationary, while the connecting member is fixedly connected to the first front module 1, so that the insert 111 is also stationary. When the second front mold part 12 is pushed to the right by the telescopic part 112 and the insert 111 is stationary, the depth of the front mold cavity consisting of the insert 111, the recess 121 and the through hole 122 is also increased, so that when the IMD sheet is fixed, the depth of the front mold cavity can be enough to support the IMD sheet, thereby avoiding repeated fixing, saving fixing time and improving production efficiency. Further, after the IMD sheet is fixed in the front mold cavity, the injection mold is closed. When the mold is closed, the rear mold unit 2 pushes the second front mold unit 1 to the left, and the pushing force of the rear mold unit 2 is greater than the pushing force of the extensible member 112, so that the second front mold unit 12 moves to the left. While the second front mold piece 12 is pushed to the left, the insert 111 is at rest and the depth of the front cavity becomes smaller. Therefore, the depth of the front die cavity is changed back to the original depth through die assembly, so that the rear film line is prevented from moving downwards, and the injection molding quality of the IMD sheet is ensured.

In actual production, the structure of the telescopic member 112 is various, but in this embodiment, the telescopic member 112 is preferably a spring member. Because the spring part has a simple structure, the production is convenient when a mould is manufactured.

Further, the movable assembly 110 further includes a first flow field plate 113 and a second flow field plate 114; the first runner plate 113 is fixedly connected with the first front module 11, and the second runner is fixedly connected with the first runner plate 113; a mounting groove 1140 is formed inside the second flow channel plate 114, and a recessed clamping portion 1141 is formed at the left end of the mounting groove 1140; the connecting end is provided with a convex clamping part 1111 corresponding to the concave clamping part 1141; the insert 111 clamps the protrusion clamping portion 1111 to the recess clamping portion 1141, so that the connection end is fixedly connected to the mounting groove 1140. The movable assembly 110 is fixed to the right side of the first front module 11 by the first runner plate 113 being fixedly coupled to the first front module 11. And the insert 111 is clamped to the recessed clamping portion 1141 by the raised clamping portion 1111, so that the insert 111 is fixed to the movable assembly 110. Thus, when the telescopic member 112 pushes the second front mold part 12 or the rear mold part 2 pushes the second front mold part 12, the insert 111 is ensured to be stationary, so that the depth of the front mold cavity can be adjusted.

Specifically, the left side surface of the second front module 12 is provided with a mounting cavity 124, and the mounting cavity 124 is communicated with the groove 121 through the through hole 122; when the first front module 11 and the second front module 12 are connected to form the front module assembly 1, the movable assembly 110 is sleeved in the mounting cavity 124. The movable assembly 110 is mounted in the mounting cavity 124 when the first front module 11 and the second front module 12 are connected to form the front module 1, so that the size of the front module 1 can be reduced after the first front module 11 and the second front module 12 are connected to form the front module 1; preferably, the movable assembly 110 is mounted in the mounting cavity 124, which can achieve a positioning effect, so that the first front module 11 and the second front module 12 can be connected more conveniently.

Preferably, a first flow channel structure 1121 is disposed on the left side surface of the first flow channel plate 113; the right side surface of the second front module 12 is provided with a second flow passage structure 123, and the second flow passage structure 123 is communicated with the groove 121; when front mold assembly 1 and rear mold assembly 2 are clamped together, first flow passage structure 1121 communicates with second flow passage structure 123.

Furthermore, the left side of the first front module 11 is provided with a connecting cavity for installing the sprue bush 13; the gate of the gate housing 13 communicates with the first flow channel structure 1121.

Specifically, the hot melt flows to the first flow channel structure 1121 through the sprue bush 13, and then enters the injection mold, after the hot melt enters the first flow channel structure 1121, the hot melt flows into the second flow channel structure 123 through the flow channel of the injection mold, and the second flow channel structure 123 is connected with the front mold cavity, so that the injection molding is completed.

Preferably, the rear mold assembly 2 is provided with a rear mold cavity 21 on the left side, and when the rear mold assembly is clamped with the front mold assembly 1, the rear mold cavity 21 and the front mold cavity constitute an injection mold cavity 126. The front mold cavity and the rear mold cavity 21 are connected to form a cavity for providing injection molding for the IMD sheet.

The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the utility model and should not be construed in any way as limiting the scope of the utility model. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.

Claims

1. An injection mold with a movable insert is characterized by comprising a front mold assembly and a rear mold assembly;

the front mold assembly comprises a first front mold part and a second front mold part;

the first front module is provided with a movable assembly which is fixedly connected to the right side surface of the telescopic first front module;

the movable assembly comprises a telescopic piece and an insert, the connecting end of the insert is fixedly connected with the movable assembly, and the sliding end of the insert extends outwards;

the right side surface of the second front module is provided with a groove, and the left side surface of the groove is provided with a through hole;

the first front mould part can arrange the sliding end in the through hole, so that the first front mould part and the second front mould part are movably connected to form the front mould assembly, and the groove, the through hole and the sliding end form a front mould cavity;

the distance between the right side surface of the groove and the right side surface of the insert is the depth of the front mold cavity;

when the front mold assembly and the rear mold assembly are opened, the front mold assembly can be stretched rightwards through the telescopic piece, and the second front mold piece is pushed to move rightwards along the outer part of the insert, so that the depth is increased;

when the front mold assembly and the rear mold assembly are closed, the rear mold assembly can push the second front mold piece to move leftwards along the insert, the telescopic piece shrinks leftwards, and the depth becomes smaller.

2. The injection mold with a removable insert according to claim 1, wherein the telescoping member is a spring member.

3. The injection mold with a removable insert according to claim 1, wherein the removable assembly further comprises a first runner plate and a second runner plate;

the first runner plate is fixedly connected with the first front module, and the second runner is fixedly connected with the first runner plate;

an installation groove is formed in the second flow channel plate, and a concave clamping part is arranged at the left end of the installation groove;

the connecting end is provided with a convex clamping part corresponding to the concave clamping part;

the insert clamps the convex clamping part on the concave clamping part, so that the connecting end is fixedly connected in the mounting groove.

4. The injection mold with the removable insert as set forth in claim 3, wherein the second front mold part has a mounting cavity on a left side surface thereof, the mounting cavity communicating with the recess through the through hole;

when the first front module and the second front module are connected to form the front module assembly, the movable assembly is sleeved in the mounting cavity.

5. The injection mold with a removable insert according to claim 3, wherein the first runner plate is provided with a first runner structure on a left side surface thereof;

a second flow channel structure is arranged on the right side face of the second front module and communicated with the groove;

the first flow passage structure is in communication with the second flow passage structure when the front mold assembly is closed with the rear mold assembly.

6. An injection mold with a removable insert according to claim 5, wherein the left side of the first front mold part is provided with a connecting cavity for mounting a sprue bushing;

a gate of the gate sleeve is in communication with the first flow channel structure.

7. An injection mold having a removable insert according to claim 1, wherein the rear mold assembly has a rear mold cavity on a left side thereof, the rear mold cavity and the front mold cavity forming an injection mold cavity when the rear mold assembly is closed with the front mold assembly.