CN213797792U

CN213797792U - Double-shot mold

Info

Publication number: CN213797792U
Application number: CN202021936291.2U
Authority: CN
Inventors: 刘历伟
Original assignee: LUOPAI MOQIE (BEIJING) CO Ltd; Nolante New Materials Beijing Co ltd; Nolato Mobile Communication Polymers Beijing Co Ltd
Current assignee: LUOPAI MOQIE (BEIJING) CO Ltd; Nolante New Materials Beijing Co ltd; Lovepac Converting Beijing Co Ltd; Nolato Mobile Communication Polymers Beijing Co Ltd
Priority date: 2020-09-07
Filing date: 2020-09-07
Publication date: 2021-07-27
Anticipated expiration: 2030-09-07

Abstract

Embodiments of the present disclosure disclose a two-shot mold. One embodiment of the two-shot mold comprises: a front mold and a rear mold; the bottom plate is movably connected with the rear mold; the sliding block component is connected with the bottom plate in a sliding manner; the annular insert is slidably sleeved on the embedded column, the first end of the annular insert is fixedly arranged on the bottom plate, and the second end of the annular insert is arranged towards the rear die. This embodiment slidably couples the slider assembly to the base plate and slidably mounts the annular insert to the insert post such that the base plate can slide toward or away from the rear mold by sliding the slider assembly, thereby enabling the second end of the annular insert to slide toward or away from the rear mold. Therefore, the cavity structure of the rear mold can be changed. And then can form different molding cavities with the front mould, realize the injection moulding of more structure products. The injection molding function of the double-injection mold is enriched, and the flexibility of the double-injection mold is improved.

Description

Double-shot mold

Technical Field

The embodiment of the disclosure relates to the field of injection molds, in particular to a double-injection mold.

Background

The double-injection mold is a mold in which two plastic materials are injected on the same injection molding machine and are molded twice, but the product is only subjected to mold stripping once.

The above-mentioned two-shot mold generally comprises two front molds having different cavities and two rear molds having the same cavities. During the first injection, a front mold is engaged with a rear mold, and the first injection is completed according to the formed molding cavity. Next, in the second injection molding process, the front mold is rotated, and the other front mold is engaged with the rear mold, and the second injection molding is completed according to the new molding cavity formed.

Because the cavity structures of the rear mold are the same, the structure of the molding cavity formed by twice injection molding depends on the cavity of the front mold, and the structure of a molded product is further limited.

Accordingly, there is a need in the art for a new two-shot mold that addresses the above-mentioned problems.

SUMMERY OF THE UTILITY MODEL

This summary is provided to introduce a selection of concepts in a simplified form that are further described below in the detailed description. This summary is not intended to identify key features or essential features of the claimed subject matter, nor is it intended to be used to limit the scope of the claimed subject matter.

In order to solve the above-mentioned problem that the cavity structures of the back molds in the related two-shot molds are the same, thereby limiting the structure of the molded product, some embodiments of the present disclosure provide a two-shot mold including: a front mold and a rear mold; a base plate movably connected with the rear mold; the sliding block component is connected with the bottom plate in a sliding mode and can drive the bottom plate to slide towards or away from the rear die when responding to the sliding of the sliding block component towards or away from the middle of the bottom plate; the rear mould comprises an annular insert and an insert column, wherein the insert column penetrates through the base plate and is arranged towards the rear mould, the annular insert is slidably sleeved on the insert column, a first end of the annular insert is fixedly arranged on the base plate, and a second end of the annular insert is arranged towards the rear mould and can drive the second end of the annular insert to slide towards or away from the rear mould in response to the base plate sliding towards or away from the rear mould so as to form different forming cavities with the front mould.

In some embodiments, the slider assembly includes a slider and an angled guide post that obliquely passes through the slider and is slidably coupled to the slider.

In some embodiments, the height of the longitudinal section of the slider gradually decreases from the end away from the base plate to the end toward the base plate.

In some embodiments, the base plate is provided with a groove corresponding to the shape of the slider.

In some embodiments, the two-shot mold further comprises a restoring member disposed between the rear mold and the base plate.

In some embodiments, the return member is a spring.

One of the above-described various embodiments of the present disclosure has the following advantageous effects: the sliding block assembly is connected with the bottom plate in a sliding mode, and the annular insert is sleeved on the insert column in a sliding mode, so that the bottom plate can slide towards or away from the rear die through sliding of the sliding block assembly, and the second end of the annular insert can be driven to slide towards or away from the rear die. Therefore, the cavity structure of the rear mold can be changed. And then can form different molding cavities with the front mould, realize the injection moulding of more structure products. The injection molding function of the double-injection mold is enriched, and the flexibility of the double-injection mold is improved.

Drawings

The above and other features, advantages and aspects of various embodiments of the present disclosure will become more apparent by referring to the following detailed description when taken in conjunction with the accompanying drawings. Throughout the drawings, the same or similar reference numbers refer to the same or similar elements. It should be understood that the drawings are schematic and that elements and features are not necessarily drawn to scale.

Fig. 1 is a schematic structural view of some embodiments of a two-shot mold according to the present disclosure;

FIG. 2 is a schematic structural view of still further embodiments of a two-shot mold according to the present disclosure;

fig. 3 is a schematic structural diagram of still further embodiments of a two-shot mold according to the present disclosure.

Detailed Description

Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While certain embodiments of the present disclosure are shown in the drawings, it is to be understood that the disclosure may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided for a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the disclosure are for illustration purposes only and are not intended to limit the scope of the disclosure.

It should be noted that, for convenience of description, only the relevant portions of the related inventions are shown in the drawings. The embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict.

It should be noted that the terms "first", "second", and the like in the present disclosure are only used for distinguishing different devices, modules or units, and are not used for limiting the order or interdependence relationship of the functions performed by the devices, modules or units.

It is noted that references to "a", "an", and "the" modifications in this disclosure are intended to be illustrative rather than limiting, and that those skilled in the art will recognize that "one or more" may be used unless the context clearly dictates otherwise.

The names of messages or information exchanged between devices in the embodiments of the present disclosure are for illustrative purposes only, and are not intended to limit the scope of the messages or information.

The present disclosure will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

Referring first to fig. 1, fig. 1 is a schematic structural view of some embodiments of a two-shot mold according to the present disclosure. As shown in fig. 1, the double-shot mold of the present disclosure includes a front mold 1 and a rear mold 2. When the cavities of the front mold 1 and the rear mold 2 are closed, a molding cavity can be formed. The front mold 1 is usually replaced during the first and second injection molding processes to form a new cavity, thereby completing the double shot injection molding. The two-shot mold of the present disclosure further includes a base plate 3, a slide assembly (not integrally labeled in the figures), an annular insert 5, and an insert post 4.

Reference is next made to fig. 2 with continued reference to fig. 1. Fig. 2 is a schematic structural diagram of still further embodiments of a two-shot mold according to the present disclosure. As shown in fig. 1 and 2, a base plate 3 is movably connected to the rear mold 2. Specifically, the base plate 3 and the rear mold 2 may be coupled by two or more bolts 9 so that the base plate 3 and the rear mold 2 are movably coupled. One end of the bolt 9 is provided with a thread and is connected with the rear mold 2 through the bottom plate 3. The base plate 3 may be provided with a through hole through which the bolt 9 is inserted with a gap. The head of the bolt 9 is clamped to the bottom of the bottom plate 3. As such, when the relative movement occurs between the base plate 3 and the rear mold 2, the bolt 9 may connect the base plate 3 and the rear mold 2 and move the base plate 3 and the rear mold 2 in the axial direction of the bolt 9. The bolt head also limits the distance of movement between the base plate 3 and the rear mold 2.

Reference is next made to fig. 3 with continued reference to fig. 2. Fig. 3 is a schematic structural diagram of still further embodiments of a two-shot mold according to the present disclosure. As shown in fig. 2 and 3, the slider assembly is slidably coupled to the base plate 3. Specifically, the slider assembly may include a slider 6 and an inclined guide post 7. The inclined guide post 7 is obliquely inserted through the slider 6 and slidably connected to the slider 6. The slider 6 is placed on the bottom of the base plate 3 and slidably coupled to the base plate 3. In the working state, the slide block 6 slides downwards along the inclined guide post 7, moves away from the middle part of the bottom plate 3, and the slide block 6 moves downwards. Simultaneously, the soleplate 3 moves downwards synchronously; the slide block 6 slides upwards along the inclined guide post 7 and moves towards the middle of the bottom plate 3, and the slide block 6 moves upwards and simultaneously drives the bottom plate 3 to move upwards synchronously. Thus, the slider assembly can drive the bottom plate 3 to move up and down. The guide post is not exclusive, and those skilled in the art may select a hydraulic cylinder or the like to control the up-and-down movement of the slider.

Further, the height of the longitudinal section of the slider 6 is gradually reduced from the end away from the base plate to the end toward the base plate 3. The slide 6 may be wedge-shaped. In a working state, when the sliding block 6 slides upwards or downwards along the inclined guide post 7, the bottom plate 3 moves along with the sliding block 6, and the wedge-shaped sliding block 6 can enable the bottom plate 3 to move upwards and downwards more stably and smoothly.

Further, a groove (not shown) having a shape corresponding to the slider 6 may be formed on the bottom of the base plate 3. Thereby limiting the direction of movement of the slider 6. The slider 6 is prevented from sliding towards or away from the direction perpendicular to the paper. The reliability of the double-injection mold is improved.

Further, the double-shot mold further includes a reset member 8 (shown in fig. 1), and the reset member 8 is provided between the rear mold 2 and the bottom plate 3. When the base plate 3 leaves the initial position (position shown in fig. 3), the return member 8 is compressed after moving towards the rear mould 2. When the base plate 3 moves away from the rear mold 2, the restoring member 8 provides a downward force to move the base plate 3 downward, returning to the initial position. As an example, the return member may be a spring or a reed. The embodiment of the resetting member described above can be selected by the person skilled in the art as the case may be. Such variations are not beyond the scope of the present disclosure.

With continued reference to fig. 2 and 3, as shown in fig. 2 and 3, the annular insert 5 is slidably disposed over the post 4. The embedded column penetrates through the bottom plate and faces the rear die. A first end of the ring insert 5 is fixedly installed to the base plate 3, and a second end of the ring insert 5 is disposed toward the rear mold 2. The second end of the annular insert 5 can be brought to slide towards or away from the rear mold 2 in response to the base plate 3 sliding towards or away from the rear mold 2. The annular insert 5 may form a different cavity from the front mold 1 when the second end is at a different position. Therefore, different forming cavities can be formed with the front mold 1, and injection molding of products with more structures is realized. The injection molding function of the double-injection mold is enriched, and the flexibility of the double-injection mold is improved.

According to the double-injection mold disclosed by the invention, the sliding block assembly is connected with the bottom plate in a sliding manner, and the annular insert is sleeved on the insert column in a sliding manner, so that the bottom plate can slide towards or away from the rear mold through the sliding of the sliding block assembly, and the second end of the annular insert can be driven to slide towards or away from the rear mold. Therefore, the cavity structure of the rear mold can be changed. And then can form different molding cavities with the front mould, realize the injection moulding of more structure products. The injection molding function of the double-injection mold is enriched, and the flexibility of the double-injection mold is improved.

Further, the height of the longitudinal section of the slider is gradually reduced from one end away from the bottom plate to one end toward the bottom plate. The slider may be wedge-shaped. Under the working state, when the sliding block slides upwards or downwards along the inclined guide post, the bottom plate moves along with the sliding block, and the wedge-shaped sliding block can enable the bottom plate to move upwards and downwards more stably and smoothly.

The foregoing description is only exemplary of the preferred embodiments of the disclosure and is illustrative of the principles of the technology employed. It will be understood by those skilled in the art that the scope of the present disclosure is not limited to the specific combination of the above-mentioned features, but also covers other embodiments formed by any combination of the above-mentioned features or their equivalents without departing from the spirit of the present disclosure. For example, the above features and (but not limited to) the features disclosed in this disclosure having similar functions are replaced with each other to form the technical solution.

Claims

1. A double shot mold comprising a front mold and a rear mold, comprising:

the bottom plate is movably connected with the rear die;

the sliding block assembly is connected with the bottom plate in a sliding mode and can drive the bottom plate to slide towards or away from the rear die when responding to the sliding of the sliding block assembly towards or away from the middle of the bottom plate;

the rear mould comprises an annular insert and an insert column, wherein the insert column penetrates through the base plate and faces the rear mould, the annular insert is slidably sleeved on the insert column, the first end of the annular insert is fixedly arranged on the base plate, the second end of the annular insert faces the rear mould, and the second end of the annular insert can be driven to face or depart from the rear mould to slide in response to the base plate facing or departing from the rear mould to form different forming cavities with the front mould.

2. The two-shot mold of claim 1, wherein the slide assembly comprises a slide and a diagonal guide post that passes obliquely through the slide and is slidably connected with the slide.

3. A two-shot mould as claimed in claim 2, wherein the longitudinal cross-sectional height of the slides decreases progressively from the end facing away from the base plate to the end facing towards the base plate.

4. A two-shot mould as claimed in claim 3, wherein said base plate is provided with a recess corresponding to the shape of said slide.

5. A two-shot mold according to any of claims 1-4, further comprising a reset member disposed between the back mold and the bottom plate.

6. The double-shot mold of claim 5, wherein the return member is a spring.