CN113977869A

CN113977869A - A glue injection mould for glue hair interdental brush

Info

Publication number: CN113977869A
Application number: CN202111263453.XA
Authority: CN
Inventors: 耿宜鹏; 侯晨
Original assignee: Yangzhou Meixing Oral Care Products Co ltd
Current assignee: Yangzhou Meixing Oral Care Products Co ltd
Priority date: 2021-10-28
Filing date: 2021-10-28
Publication date: 2022-01-28

Abstract

The invention relates to a plastic injection mold for a plastic-hair interdental brush, comprising an injection molding component, a positioning component and a movable needle component, wherein the movable needle component is located in a cavity formed between the injection molding component and the positioning component, and the The injection molding assembly includes a molding mechanism for supplying molten plastic and injection molding to form a rubber-bristled interdental brush, and an overmolding mechanism for supplying molten glue and for encapsulating soft glue, the molding mechanism and the overmolding mechanism are placed side by side on the same side, and the movable The needle assembly is used to transfer the rubber interdental brush on the forming mechanism to the rubber encapsulation mechanism, and the movable needle assembly includes a movable support needle and a forming fixture; the mold designed in the present invention and the movable needle on the mold The component presses the primary injection part with a fixed pressure to ensure that the product is not crushed and deformed.

Description

Glue injection mold of inter-tooth brush

Technical Field

The invention relates to the technical field of glue injection equipment, in particular to a glue injection mold of an interdental brush for rubber bristles.

Background

The injection molding is that the raw material is heated and melted in a charging barrel of an injection molding machine, the melted raw material is sprayed out from a nozzle at the front end of the charging barrel under the action of injection pressure, flows through a pouring system and is injected into a closed cavity of a mold, and then is cooled and shaped, and finally, the cavity is opened, and the product is taken out after demolding; the secondary glue injection is a special method for adapting to novel plastic injection molding, the soft rubber interdental brush needs secondary injection molding, and a primary injection molding piece has the problems of size deviation, product deformation and the like, so that the secondary injection molding piece can be in a mold, the pressing is too heavy, and the product is easy to break; the pressing is too light, and the rubber is easy to bend when injected with rubber; therefore, a glue injection mold of the inter-dental rubber brush is designed.

Disclosure of Invention

The invention aims to solve the technical problem in the glue injection equipment at least to a certain extent. Therefore, the invention provides a glue injection mold for an interdental brush.

The technical scheme adopted by the invention for solving the technical problems is as follows: the injection mold comprises an injection molding assembly, a positioning assembly and a movable needle assembly, wherein the movable needle assembly is positioned in a cavity formed between the injection molding assembly and the positioning assembly, the injection molding assembly comprises a forming mechanism for providing molten plastic and forming an interdental brush through injection molding and an encapsulating mechanism for providing the molten glue and encapsulating the glue, the forming mechanism and the encapsulating mechanism are arranged on the same side in parallel, the movable needle assembly is used for transferring the interdental brush of the bristles on the forming mechanism to the encapsulating mechanism, and the movable needle assembly comprises a movable supporting needle and a forming clamp.

In a preferred embodiment of the invention, the forming mechanism comprises a plurality of forming seats similar to the shape of the inter-bristle brush, the forming seats are provided with injection molding openings, and the injection molding openings enable the forming clamp to more accurately and conveniently inject the inter-bristle brush onto the forming seats through the injection molding openings in the working process of the forming clamp.

In a preferred embodiment of the invention, the forming seat comprises a lower die set and an upper die set, the lower die set and the upper die set are respectively provided with a lower cavity and an upper cavity, the lower cavity and the upper cavity can respectively abut against two sides of the brush between the injection molded rubber bristle teeth, a part of the injection molded part including the injection molding hole extends between the lower cavity and the upper cavity, and the lower cavity and the upper cavity can respectively abut against two sides of the injection molded part to position the injection molded part.

In a preferred embodiment of the invention, the encapsulation mechanism is provided with the encapsulation forming die, and when the encapsulation forming die is closed, the structure design integrates the process of forming the inter-bristle brush and encapsulating the inter-bristle brush into a production cavity.

In a preferred embodiment of the present invention, the movable needle supporting on the movable needle assembly is disposed on a plurality of linear guide holes on the inner wall of the lower die set, and the side edges of the lower die set are respectively provided with fixing holes corresponding to the linear guide holes; in the moving process of the inter-rubber-tooth brush, the ejector pins play a role in ejecting the inter-rubber-tooth brush out of the lower module to be transferred into the forming fixture on one hand, and play a role in fixing the inter-rubber-tooth brush when the inter-rubber-tooth brush is moved to the forming seat by the forming fixture on the other hand.

In a preferred embodiment of the invention, the movable needle assembly is connected with a gas storage tank, so that the gas storage tank can be pressurized and the constant air pressure is ensured.

In a preferred embodiment of the present invention, the positioning assembly includes a positioning groove on an inner wall of the forming mechanism, and a positioning strip correspondingly inserted into the positioning groove.

The invention has the beneficial effects that: after the structure is adopted, the needle supporting structure on the die is modified, and the fixed push needle is changed into a movable needle component; the air storage tank is added to play a role in pressurization and ensure constant air pressure; the supporting needle on the die presses the one-time injection molding piece by fixed pressure, so that the product is prevented from being crushed and deformed.

Drawings

FIG. 1 is a schematic plan view of the present invention;

FIG. 2 is a schematic cross-sectional view of the present invention;

FIG. 3 is a schematic perspective view of the present invention;

in the figure: 1. the injection molding assembly comprises an injection molding assembly, 2, a positioning assembly, 3, a movable needle assembly, 4, a molding mechanism, 5, a rubber coating mechanism, 6, a movable supporting needle, 7, a molding clamp, 8, a molding seat, 9, an injection molding opening, 10, a lower mold unit, 11, an upper mold unit, 12, a linear guide hole, 13, a fixing hole, 14, an air storage tank, 15, a positioning groove, 16 and a positioning strip.

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 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.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

Example 1:

as shown in fig. 1, an injection mold for an interdental brush includes an injection molding assembly 1, a positioning assembly 2, and a movable needle assembly 3, wherein the movable needle assembly 3 is located in a cavity formed between the injection molding assembly 1 and the positioning assembly 2, the injection molding assembly 1 includes a molding mechanism 4 for providing molten plastic and forming the interdental brush by injection molding, and an encapsulating mechanism 5 for providing the molten glue and encapsulating the glue, the molding mechanism 4 and the encapsulating mechanism 5 are placed side by side on the same side, the movable needle assembly 3 is used for transferring the interdental brush on the molding mechanism 4 to the encapsulating mechanism 5, and the movable needle assembly 3 includes a movable needle holder 6 and a molding clamp 7.

As shown in figure 1, the forming mechanism 4 comprises a plurality of forming seats 8 which are similar to the shape of the inter-bristle brush, injection molding openings 9 are arranged on the forming seats, and in the working process, the forming fixture 7 can more accurately and more conveniently inject the inter-bristle brush to the forming seats 8 through the injection molding openings 9.

As shown in fig. 2, the forming base 8 includes a lower die set 10 and an upper die set 11, the lower die set 10 and the upper die set 11 are respectively provided with a lower cavity and an upper cavity, the lower cavity and the upper cavity can respectively support two sides of the brush between the injection molded rubber bristle teeth, and a part of the injection molded part including the injection molding port 9 extends between the lower cavity and the upper cavity.

The rubber coating mechanism 5 is provided with a rubber coating forming die, when the rubber coating forming die is closed, injection molding starts and a rubber interdental brush is formed, and through the structural design, the forming of the rubber interdental brush and the rubber coating process of the rubber interdental brush are integrated into a production cavity.

As shown in fig. 1 and 2, the movable needle holder 6 on the movable needle assembly 3 is disposed on a plurality of linear guide holes 12 on the inner wall of the lower die set 10, and the side edges of the lower die set 10 are respectively provided with fixing holes 13 corresponding to the linear guide holes 12; in the moving process of the inter-bristle brush, the movable supporting needle 6 plays a role of pushing the inter-bristle brush out of the lower module 10 and transferring the inter-bristle brush into the forming fixture 7 on one hand, and plays a role of fixing the inter-bristle brush when the forming fixture 7 moves the inter-bristle brush to the forming base 8 on the other hand; the movable needle assembly 3 is connected with the air storage tank 14, the air storage tank 14 is used for increasing the pressure, the pressure can reach 10kg, and the air pressure is ensured to be constant.

As shown in fig. 3, the positioning assembly 2 includes a positioning groove 15 on the inner wall of the forming mechanism 4, and a positioning strip 16 correspondingly clipped into the positioning groove 15.

Example 2:

Compared with the prior art, the lower cavity and the upper cavity can respectively abut against two sides of an injection molding part to position the injection molding part.

Example 3:

as shown in fig. 1 and 2, the movable needle assembly 3 includes a movable needle support 6 and a forming fixture 7, the movable needle support 6 on the movable needle assembly 3 is disposed on a plurality of linear guide holes 12 on the inner wall of the lower die set 10, and fixing holes 13 corresponding to the linear guide holes 12 are respectively disposed on the side edges of the lower die set 10; in the moving process of the inter-bristle brush, the movable supporting needle 6 plays a role of pushing the inter-bristle brush out of the lower module 10 and transferring the inter-bristle brush into the forming fixture 7 on one hand, and plays a role of fixing the inter-bristle brush when the forming fixture 7 moves the inter-bristle brush to the forming base 8 on the other hand; the movable needle assembly 3 is connected to the reservoir 14.

Compared with the prior art, the invention modifies the needle supporting structure on the die and changes the fixed push needle into the movable needle.

The working principle is as follows: according to the invention, the molding mechanism 4 for providing molten plastic on the injection molding assembly 1 and forming the rubber interdental brush by injection molding and the rubber coating mechanism 5 for providing molten rubber solution and coating soft rubber are arranged, secondary glue injection is carried out on the rubber interdental brush, soft rubber injection molding is carried out through the molding mechanism 4, glue injection is carried out on a mold through injection molding after a proper gap is left between the lower module 10 and the upper module 11, then the glue injection finished soft rubber liquid is further molded, the molded soft rubber product can be directly taken out through the movable supporting needle 6 on the movable needle assembly 3 after molding and cooling shrinkage, and the air storage tank 14 is added, so that the pressurizing effect is achieved, and the constant air pressure is ensured; the movable needle 6 on the mould presses the injection-moulded part with a fixed pressure.

In the description herein, references to the description of the terms "one embodiment," "certain embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In summary, although the present invention has been described with reference to the preferred embodiments, the above-described preferred embodiments are not intended to limit the present invention, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, therefore, the scope of the present invention shall be determined by the appended claims.

Claims

1. A glue injection mould for a glue-hair interdental brush, comprising an injection moulding assembly, a positioning assembly and a movable needle assembly, wherein the movable needle assembly is located in the cavity formed between the injection moulding assembly and the positioning assembly , the injection molding assembly includes a molding mechanism for providing molten plastic and injection molding to form a glue-hair interdental brush, and a molding mechanism for providing molten glue and used for encapsulating soft glue. The movable needle assembly is used for transferring the glue-hair interdental brush on the forming mechanism to the encapsulating mechanism, and the movable needle assembly includes a movable support needle and a forming fixture.

2. The glue injection mould of a glue-bristled interdental brush according to claim 1, wherein the forming mechanism comprises a plurality of moulding seats similar in shape to the glue-bristled interdental brush, and the moulding seat is provided with Injection port, during the working process of the molding fixture, the injection molding port enables the molding fixture to inject the rubber bristle interdental brush into the molding seat more accurately and conveniently through the injection molding port.

3. the glue injection mould of a kind of glue hair interdental brush according to claim 2, is characterized in that: described forming seat comprises lower die set and upper die set, and described lower die set and upper die set are respectively provided with A lower cavity and an upper cavity, the lower cavity and the upper cavity can respectively abut on both sides of the injection-molded rubber bristle interdental brush, and a part of the injection-molded part including the injection hole protrudes between the lower cavity and the upper cavity , the lower cavity and the upper cavity can respectively abut on both sides of the injection molded part to position it.

4. the glue injection mould of a kind of glue-hair interdental brush according to claim 1, is characterized in that: described over-moulding mechanism is provided with described over-moulding moulding mould, when over-moulding moulding mould is closed, by this The structural design integrates the forming of the interdental brush and the encapsulation of the interdental brush into one production chamber.

5. The glue injection mould of a glue-hair interdental brush according to claim 1, wherein the movable support needle on the movable needle assembly is arranged on a plurality of linear guide holes in the inner wall of the lower module, so that the The side edges of the lower die tool are respectively provided with fixing holes corresponding to the linear guide holes; during the movement of the interdental brush, the ejector pin is used to push the interdental brush out of the lower die and transfer it to the lower die. On the other hand, when the forming fixture moves the interdental brushes to the forming seat, it plays the role of fixing the interdental brushes.

6. A glue injection mould for a glue-hair interdental brush according to claim 5, characterized in that: the movable needle assembly is connected to an air storage tank, and the air storage tank plays a role of pressurizing and ensures the air pressure constant.

7 . The glue injection mold for a glue-hair interdental brush according to claim 1 , wherein the positioning assembly comprises a positioning groove on the inner wall of the forming mechanism, and a positioning bar correspondingly snapped into the positioning groove. 8 .