CN220499798U

CN220499798U - Positioning and locking mechanism suitable for double-color injection mold

Info

Publication number: CN220499798U
Application number: CN202322106982.XU
Authority: CN
Inventors: 肖烈熙; 邱炎炎; 刘毅群
Original assignee: Suzhou Zhenye Mold Co ltd
Current assignee: Suzhou Zhenye Mold Co ltd
Priority date: 2023-08-07
Filing date: 2023-08-07
Publication date: 2024-02-20
Anticipated expiration: 2033-08-07

Abstract

The utility model relates to the technical field of injection molds and discloses a positioning and locking mechanism suitable for a double-color injection mold, which comprises a male mold plate, wherein a detachable male mold core is arranged on the male mold plate, a plurality of bone positions are arranged on the male mold core, and the bone positions are protruded out of the surface of the male mold core; one side of the male template is provided with a sealing plate, a thimble assembly is arranged between the sealing plate and the male template, and the output end of the thimble assembly can penetrate through the male template and the male mold core to eject the injection molding product. The plurality of fixed bone positions arranged on the male die core are utilized, so that a semi-finished product can be buckled after hard rubber is injected, and the semi-finished product is prevented from moving in the rotating process; through this structure can prevent at rotatory in-process of station, and the semi-finished product receives centrifugal force influence and appears the condition of leaving the shape, and then ensures the final quality of injection molding product, reduces defective rate and cost.

Description

Positioning and locking mechanism suitable for double-color injection mold

Technical Field

The utility model relates to the technical field of injection molds, in particular to a positioning and locking mechanism suitable for a double-color injection mold.

Background

The injection molding industry has penetrated into aspects of life, which results in an increasingly larger injection molding demand market; the double-shot injection molding process is also one of injection molding, which uses two sets of injection molds and two plastic materials to be molded twice on the same injection molding machine, and the product is only ejected once; because the technology can make the appearance of the product more beautiful, the color can be easily changed without spraying, and the double-color injection mold matched with the technology is increasingly popular in the market at present.

"Dual-shot" is actually a two-shot injection molding process, the product generally comprising a main body portion (hard gel) and an outer cover portion (soft gel); during production, a hard rubber main body is produced firstly, then the hard rubber main body is put into an outer packing mould, and outer packing soft rubber injection molding production is carried out, namely, the hard rubber is injected firstly, and then the soft rubber is injected; the mold is usually arranged on a rotating station in the double-color injection molding process, based on the mold, after the hard glue is injected into the product, the mold needs to be rotated for a certain angle and then soft glue is injected, the hard glue can shrink, and when the hard glue is contracted, the sealing glue can run out of burrs, so that the product quality of the injection molding process is affected.

Disclosure of Invention

The utility model aims to solve the problem of providing a positioning and locking mechanism suitable for a double-shot injection mold, which is characterized in that a fixed bone position is additionally arranged on a male mold core of a manufactured product, so that the situation that the product is separated when the mold is turned to a soft rubber injection station after hard rubber injection is finished is avoided, and the quality of the final product is influenced.

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

the positioning and locking mechanism suitable for the double-color injection mold comprises a male mold plate, wherein a detachable male mold core is arranged on the male mold plate, a plurality of bone positions are arranged on the male mold core, and the bone positions are protruded out of the surface of the male mold core; one side of the male template is provided with a sealing plate, a thimble assembly is arranged between the sealing plate and the male template, and the output end of the thimble assembly can penetrate through the male template and the male mold core to eject the injection molding product.

In a preferred embodiment of the present utility model, the bone site has a long strip structure and a triangular cross section.

In a preferred embodiment of the present utility model, two male mold cores are provided, the two male mold cores are oppositely disposed on the male mold plate, and a middle slot is provided between the two male mold cores.

In a preferred embodiment of the present utility model, a plurality of support plates are further disposed between the male mold plate and the sealing plate, the plurality of support plates divide a cavity between the male mold plate and the sealing plate into two cavities, and a thimble assembly is disposed in each cavity.

In a preferred embodiment of the present utility model, the ejector pin assembly includes a plate body, a plurality of ejector pins are fixedly mounted on the plate body, and one end of the ejector pin away from the plate body can penetrate through the male mold plate and the male mold core to eject the injection molding product.

In a preferred embodiment of the present utility model, the plate body includes a thimble panel and a thimble bottom plate that overlap each other, and one end of the thimble is fixedly installed between the thimble bottom plate and the thimble panel;

and a plurality of return pins are further arranged between the thimble bottom plate and the thimble panel, and one end of each return pin can be slidably embedded into the male template.

In a preferred embodiment of the present utility model, the male mold plate is provided with a mounting groove, and the male mold core is embedded in the mounting groove through a fastener.

In a preferred embodiment of the present utility model, a plurality of positioning grooves are formed on a side of the male mold plate away from the sealing plate, the positioning grooves are distributed at corners of the male mold plate, and each positioning groove is provided with a positioning hole.

The utility model solves the defects existing in the background technology, and has the beneficial effects that:

in the utility model, a plurality of fixed bone positions arranged on the male die core are utilized, so that a semi-finished product can be buckled after hard rubber is injected, and the semi-finished product is prevented from moving in the rotating process; through this structure can prevent at rotatory in-process of station, and the semi-finished product receives centrifugal force influence and appears the condition of leaving the shape, and then ensures the final quality of injection molding product, reduces defective rate and cost.

For the bone position, the structure is long, and the triangle is used as the cross section shape, so that the buckling product can be ensured to limit the movement of the buckling product, and the demoulding work of the final product is not influenced.

Drawings

The utility model will be further described with reference to the drawings and examples.

FIG. 1 is a schematic view of the construction of a preferred embodiment of the present utility model;

FIG. 2 is a schematic diagram of a male mold core according to a preferred embodiment of the present utility model;

FIG. 3 is an enlarged partial schematic view at A in FIG. 2;

FIG. 4 is a schematic view of the structure of a male template according to a preferred embodiment of the present utility model;

wherein, 1, a male template; 2. a male mold core; 21. bone position; 3. a mounting groove; 4. a support plate; 5. a sealing plate; 6. a thimble assembly; 61. a thimble panel; 62. a thimble bottom plate; 63. a push rod; 64. a return pin; 7. a positioning groove; 8. positioning holes; 9. a median groove.

Detailed Description

The utility model will now be described in further detail with reference to the drawings and examples, which are simplified schematic illustrations of the basic structure of the utility model, which are presented only by way of illustration, and thus show only the structures that are relevant to the utility model.

As shown in fig. 1-3, a positioning and locking mechanism suitable for a dual-color injection mold comprises a male mold plate 1, wherein a detachable male mold core 2 is arranged on the male mold plate 1, a plurality of bone sites 21 are arranged on the male mold core 2, and the bone sites 21 are fixedly connected to the male mold core 2 and protrude out of the surface of the male mold core 2.

Specifically, the male template 1 is a movable template, which can rotate and move relative to a fixedly arranged female template; in a common injection mold, an injection mold cavity is formed after the two molds are closed, and the sizing material is introduced into the mold cavity to be cooled, so that an injection product can be formed; however, the double-color injection mold needs to be filled with rubber materials twice at two different stations, and then an injection product is formed; wherein, after injecting the sizing material for the first time, the double-colored mould is opened the mould and is rotated, and in this process, its inside semi-manufactured goods probably can take place to separate the shape because of various reasons, in order to avoid this kind of circumstances to appear, this mechanism sets up a plurality of banding bone position 21 on the male mould benevolence 2, and the bone position 21 imbeds in the half-finished product after moulding plastics to realize location and locking's function, the product that corresponds appears separating the shape condition when avoiding the mould rotation, influences the shaping of two penetrating products.

As described above, by providing the bone portion 21 with a long shape and using a triangle as its cross-sectional shape, it is possible to secure the buckled product to restrict its movement without affecting the demoulding operation of the final product.

Further, because the station needs to rotate, in order to improve the injection molding efficiency, two male mold cores 2 can be arranged on the same male mold plate 1, the two male mold cores 2 are oppositely arranged, and a middle groove 9 is formed between the two male mold cores 2, and the middle groove 9 can improve the positioning precision during mold closing. Specifically, the two male mold cores 2 are equivalent to two cavities of two sets of molds, and the two molds are simultaneously closed and opened; at the beginning, injecting hard glue into one cavity, and not injecting glue into the other cavity; after the station rotates, injecting hard glue into the cavity, and then injecting soft glue into the cavity, so that a complete product is formed, and injecting hard glue into the cavity without injecting the hard glue; ejecting the product after the die is opened, and injecting hard glue into the die cavity after the product is ejected after the product is rotated again, and injecting soft glue into the die cavity after the hard glue is injected; so repeatedly, a virtuous circle is formed, and the working efficiency is improved.

As shown in fig. 1 and 4, a sealing plate 5 is arranged on one side of the male die plate 1, a plurality of supporting plates 4 are further arranged between the male die plate 1 and the sealing plate 5, the plurality of supporting plates 4 can divide a cavity between the male die plate 1 and the sealing plate 5 into two cavities, a thimble assembly 6 is arranged in each cavity, and a mounting groove 3 for mounting a male die core 2 is formed in the male die plate 1.

Specifically, the sealing plate 5 is used as a base plate, the ejector pin assembly 6 is used for demolding after the final molding of the product, can linearly move in the corresponding cavity, and enables the product to be separated from the male die core 2 through the output end of the ejector pin assembly; the male die core 2 is embedded in the mounting groove 3 through a fastener, the fastener is preferably a screw, one end of the screw can penetrate through the male die plate 1 from the cavity and extend to the interior of the male die core 2, so that the detachable mounting of the male die core 2 on the male die plate 1 is realized, the application range of the die is improved, namely, when different products or the male die core 2 are damaged, the die can continue to work by only replacing the new die core.

A plurality of positioning grooves 7 are formed in one side, far away from the sealing plate 5, of the male template 1, the positioning grooves 7 are distributed at the corners of the male template 1, and positioning holes 8 are formed in each positioning groove 7. The positioning grooves 7 are preferably arranged in four, are respectively positioned at four corners of the male template 1, corresponding positioning blocks are arranged on the female template corresponding to the male template 1, positioning columns are connected to the tail ends of the positioning blocks, the positioning blocks can be embedded into the positioning grooves 7, and the positioning columns can be embedded into the positioning holes 8, so that the positioning accuracy of the die during die assembly is ensured.

Above-mentioned, thimble assembly 6 includes the plate body, and fixed mounting has many ejector pins 63 on the plate body, and the one end that ejector pin 63 kept away from the plate body can pass public template 1 and public mould benevolence 2 with the injection molding ejecting. Based on different demoulding modes, the plate body is displaced relative to the male mould plate 1, and then the ejector rod 63 is utilized to eject the product from the male mould core 2; if a driving oil cylinder is arranged on one side of the sealing plate 5, the movement of the thimble assembly 6 is driven by the oil cylinder; and if the ejector pin assembly 6 is fixed by utilizing the relative movement during the demolding, the male template 1 drives the product and the ejector pin assembly 6 to perform the relative movement, and finally the demolding of the product is realized.

Further, the plate body comprises a thimble panel 61 and a thimble bottom plate 62 which are mutually overlapped, and one end of the thimble 63 is fixedly arranged between the thimble bottom plate 62 and the thimble panel 61; the ejector pin panel 61 is close to the male die plate 1, the ejector pin bottom plate 62 is close to the sealing plate 5, one end of the ejector pin 63 penetrates through the ejector pin panel 61, and the other end of the ejector pin 63 is fixed between the ejector pin panel and the ejector pin bottom plate through the ejector pin bottom plate 62, so that the ejector pin is convenient to quickly assemble, disassemble and replace; the return pin 64 is mounted on the plate in the same manner as the ejector rod 63, but one end of the return pin cannot penetrate through the male die core 2, and is only used for positioning and guiding when the ejector pin assembly 6 moves so as to ensure the smooth ejection operation.

The technical scheme disclosed by the utility model is utilized to execute the positioning and locking work of the semi-finished product in the rotating process, and the specific working principle is as follows:

two male mold cores 2 are arranged on the male mold plate 1, two cavities, namely a first cavity and a second cavity, can be formed between the male mold core and the female mold plate, and a plurality of bone positions 21 are arranged on each male mold core 2; in the initial state, injecting hard glue into the first cavity, and not injecting glue into the second cavity; at the moment, the bone position 21 is embedded into the hard rubber product of the first cavity, so that the functions of positioning and locking are realized, and the situation that the corresponding product is separated when the mold rotates is avoided, and the molding of the two-shot product is influenced; the demolding station rotates, soft rubber is injected into the first cavity on the basis of a hard rubber product when the mold is closed again, hard rubber is injected into the second cavity, and the same bone position 21 can be used for positioning and locking the mold; after the soft rubber in the first cavity is injected and cooled, the mold is opened, the ejector pin assembly 6 is utilized to eject the product out of the male mold core 2 corresponding to the first cavity, so that the product is demolded, and at the moment, the other product only injected with the hard rubber is not demolded; after the mold is closed again by rotating, soft rubber is injected into the second cavity, and hard rubber is injected into the first cavity again, so that the cyclic operation is formed.

In summary, by adding the fixing bone position 21 on the male mold core 2 of the manufactured product, the situation that the previous product is separated when the mold is turned to the two-shot soft rubber injection station after the injection of the first shot hard rubber is completed can be avoided, and the purpose of guaranteeing the quality of the final product is achieved; the bone position 21 is of a strip-shaped structure, and the cross section of the bone position is triangular, so that the movement of the buckled product is limited, and the demoulding operation of the final product is not influenced.

The above-described preferred embodiments according to the present utility model are intended to suggest that, from the above description, various changes and modifications can be made by the person skilled in the art without departing from the scope of the technical idea of the present utility model. The technical scope of the present utility model is not limited to the description, but must be determined according to the scope of claims.

Claims

1. Positioning and locking mechanism suitable for double-shot moulding mould, its characterized in that: the mold comprises a male mold plate (1), wherein a detachable male mold core (2) is arranged on the male mold plate (1), a plurality of bone positions (21) are arranged on the male mold core (2), and the bone positions (21) are protruded out of the surface of the male mold core (2);

one side of the male template (1) is provided with a sealing plate (5), a thimble assembly (6) is arranged between the sealing plate (5) and the male template (1), and the output end of the thimble assembly (6) can penetrate through the male template (1) and the male die core (2) to eject an injection molding product.

2. The positioning and locking mechanism for a two-shot injection mold according to claim 1, wherein: the bone position (21) is of a strip-shaped structure, and the cross section of the bone position is triangular.

3. The positioning and locking mechanism for a two-shot injection mold according to claim 1, wherein: the two male mold cores (2) are arranged, the two male mold cores (2) are oppositely arranged on the male mold plate (1), and a middle groove (9) is formed between the two male mold cores (2).

4. A positioning and locking mechanism suitable for a two-shot injection mold according to claim 3, wherein: the utility model discloses a die plate, including male template (1) and shrouding (5), be provided with between male template (1) and shrouding (5), polylith backup pad (4) will cavity between male template (1) with shrouding (5) is divided into two cavitys, every all be provided with thimble subassembly (6) in the cavity.

5. The positioning and locking mechanism for a two-shot injection mold according to claim 4, wherein: the ejector pin assembly (6) comprises a plate body, a plurality of ejector pins (63) are fixedly arranged on the plate body, and one end, far away from the plate body, of each ejector pin (63) can penetrate through the male die plate (1) and the male die core (2) to eject an injection molding product.

6. The positioning and locking mechanism for a two-shot injection mold according to claim 5, wherein: the plate body comprises a thimble panel (61) and a thimble bottom plate (62) which are mutually overlapped, and one end of the thimble (63) is fixedly arranged between the thimble bottom plate (62) and the thimble panel (61);

a plurality of return pins (64) are further arranged between the thimble bottom plate (62) and the thimble panel (61), and one end of each return pin (64) can be slidably embedded into the male die plate (1).

7. The positioning and locking mechanism for a two-shot injection mold according to claim 4, wherein: the male die plate (1) is provided with a mounting groove (3), and the male die core (2) is embedded in the mounting groove (3) through a fastener.

8. The positioning and locking mechanism for a two-shot injection mold according to any one of claims 1 to 7, wherein: a plurality of positioning grooves (7) are formed in one side, far away from the sealing plate (5), of the male template (1), the positioning grooves (7) are distributed at corners of the male template (1), and positioning holes (8) are formed in each positioning groove (7).