Injection mold without glue port residues

Abstract

The utility model relates to the technical field of molds without glue gate residues, and discloses an injection mold without glue gate residues, which comprises an upper fixing plate, a lower fixing plate is arranged right below the upper fixing plate, the upper fixing plate and the lower fixing plate are coaxially arranged in a mold closing state, a sprue bush for feeding is fixedly mounted at the center of the top surface of the upper fixing plate in a penetrating manner, and the sprue bush is vertically arranged; and an upper end opening of the sprue bush is located in a containing hole in the top of the upper fixing plate, two spacing plates are arranged on the top face of the lower fixing plate, and two ejector plates are arranged between the two spacing plates. The cutter seat, the elastic element and the rubber cutting opening insert are designed, the elastic element is the spring, when the air cylinder is ventilated, air pushes the cutter seat on the fixing plate, so that the rubber cutting opening insert effectively cuts rubber under the action of the cutter seat, the spring plays a buffering role, the stable proceeding of the cutting process is ensured, and the service life of the rubber cutting opening insert is prolonged. And meanwhile, residues caused by insufficient cutting of the rubber material are reduced.

Description

Technical Field

[0001] This utility model relates to the field of mold technology with no glue residue, specifically an injection mold with no glue residue. Background Technology

[0002] Gate-free injection molds are molds that reduce gate residue by optimizing the mold structure. Primarily used in injection molding processes, these molds reduce gate residue through optimized design. The design features a runner width that gradually narrows from the main runner towards the gate, with an arc-shaped gate cross-section, thus minimizing glue residue and improving product quality and production efficiency.

[0003] Currently, injection-molded products need to be flat and free from deformation, so side injection is used. The disadvantage is that there is residual glue at the injection gate, requiring manual trimming, which wastes manpower and affects the product's appearance and user experience. This utility model uses a glue-gate-free injection mold, which, through its unique design, solves the problem of glue gate residue in traditional injection molding, enabling automated production. Automated production not only improves production efficiency but also significantly enhances the overall quality of the product and helps reduce production costs. Utility Model Content

[0004] The purpose of this invention is to provide an injection mold with no glue residue, so as to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an injection mold without gate residue, comprising an upper fixed plate and a lower fixed plate directly below it, the two being coaxially arranged in a closed state. A sprue sleeve for feeding material is fixedly and continuously installed at the center of the top surface of the upper fixed plate, and the sprue sleeve is vertically arranged, with its upper end located in a placement hole at the top of the upper fixed plate. Two partition plates are provided on the top surface of the lower fixed plate, and two ejector plates are provided between the two partition plates. A positioning guide post is provided between the top of the two partition plates and the bottom of the upper fixed plate, and a male template and a female template are provided on the positioning guide post. An upper mold base and a lower mold base are provided between the male template and the female template, and an injection molded part is provided between the upper mold base and the lower mold base. An ejector pin is connected to the ejector plate, and the ejector pin passes through the female template and the lower mold base to contact the injection molded part.

[0006] Preferably, a flow channel is provided at the middle position between the upper mold base and the lower mold base, and the two sides of the flow channel are injection molded product parts.

[0007] Preferably, an adhesive inlet insert is provided below the flow channel, and adhesive inlet inserts are in contact with adhesive cutting inserts on both sides of the adhesive inlet insert. A cutter seat is fixedly installed at the bottom of the adhesive cutting insert, and an elastic element is provided on the cutter seat.

[0008] Preferably, a fixing plate is fixedly installed at the bottom of the cutter holder, and two cylinders are arranged below the fixing plate, with fastening screws corresponding to the bottom of the two cylinders.

[0009] This invention provides an injection mold with no glue gate residue. It has the following beneficial effects:

[0010] (1) This utility model designs a cutter seat, an elastic element, and a cutting nozzle insert. The elastic element is a spring. When the cylinder is vented, the gas pushes the cutter seat on the fixed plate, so that the cutting nozzle insert can effectively cut the rubber material under the action of the cutter seat. The spring plays a buffering role, ensuring the smooth progress of the cutting process and reducing the residue caused by insufficient cutting of the rubber material.

[0011] (2) When the molten plastic is distributed to the injection molded product through the flow channel, the cylinder is vented to drive the cutter in the cutter holder to move, so that the excess plastic material in the flow channel is effectively cut off before the molten plastic flows into the injection molded product, thus avoiding the common problem of glue residue in the injection process of traditional mold. Attached Figure Description

[0012] Figure 1 This is a structural diagram of the present invention;

[0013] Figure 2 This is a cross-sectional view of the structure of this utility model;

[0014] Figure 3 This is a view of the injection-molded product part of this utility model;

[0015] Figure 4 This is a structural view of the glue-cutting insert of this utility model.

[0016] In the diagram: Upper fixing plate 21, lower fixing plate 22, male template 23, female template 24, partition plate 25, ejector plate 26, upper mold base 27, lower mold base 28, ejector pin 29, injection molded part 3, runner 31, injection insert 32, cutter holder 33, elastic element 34, cutting nozzle insert 35, fixing plate 36, cylinder 37, fastening screw 38. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0019] A preferred embodiment of the injection mold with no glue residue provided by this utility model is, for example... Figure 1-4 As shown: An injection mold without gate residue includes an upper fixed plate 21 and a lower fixed plate 22 directly below it. The two are coaxially arranged in a closed state. A sprue sleeve for feeding is fixedly installed through the center of the top surface of the upper fixed plate 21. The sprue sleeve is vertically arranged, and the upper end of the sprue sleeve is located in the placement hole at the top of the upper fixed plate 21. Two partition plates 25 are provided on the top surface of the lower fixed plate 22, and two ejector plates 26 are provided between the two partition plates 25. A positioning guide post is provided between the top of the two partition plates 25 and the bottom of the upper fixed plate 21. A male template 23 and a female template 24 are provided on the positioning guide post. An upper mold base 27 and a lower mold base 28 are provided between the male template 23 and the female template 24. An injection molded part 3 is provided between the upper mold base 27 and the lower mold base 28. An ejector pin 29 is connected to the ejector plate 26. The ejector pin 29 passes through the female template 24 and the lower mold base 28 and contacts the injection molded part 3.

[0020] A runner 31 is provided in the middle between the upper mold base 27 and the lower mold base 28. The two sides of the runner 31 are injection molded parts 3. A glue inlet insert 32 is provided below the runner 31. The two sides of the glue inlet insert 32 are in contact with the glue cutting insert 35. A cutter seat 33 is fixedly installed at the bottom of the glue cutting insert 35. An elastic element 34 is provided on the cutter seat 33. During the injection molding process, when the molten plastic is distributed to the injection molded part 3 through the runner 31, the cylinder 37 is vented, which can drive the cutter in the cutter seat 33 to move. This allows the molten plastic to effectively cut off the excess plastic material in the runner before flowing into the injection molded part 3, avoiding the glue residue problem commonly seen in traditional mold injection molding. A fixing plate 36 is fixedly installed at the bottom of the cutter seat 33. Two cylinders 37 are provided below the fixing plate 36. Fastening screws 38 are provided at the bottom of the two cylinders 37 respectively.

[0021] During use, when the molten plastic is distributed to the injection molded product 3 through the runner 31 during the injection molding process, the runner 31 is still hot and soft after the mold is closed and the plastic is injected. It does not cool down and harden. Then, the cylinder 37 is vented to push the cutting insert 35 on the cutter holder 33 upward, blocking the runner and the product. Finally, there is no plastic residue after the product is ejected.

[0022] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An injection mold without glue residue, comprising an upper fixed plate (21) and a lower fixed plate (22) disposed directly below it, the two being coaxially arranged in a closed state, characterized in that, A sprue sleeve for feeding is fixedly installed through the center of the top surface of the upper fixed plate (21), and the sprue sleeve is vertically arranged. The upper end of the sprue sleeve is located in the placement hole at the top of the upper fixed plate (21). Two spacer plates (25) are provided on the top surface of the lower fixed plate (22), and two ejector plates (26) are provided between the two spacer plates (25). A positioning device is provided between the top of the two spacer plates (25) and the bottom of the upper fixed plate (21). The guide post is provided with a male template (23) and a female template (24). An upper mold base (27) and a lower mold base (28) are provided between the male template (23) and the female template (24). An injection molded part (3) is provided between the upper mold base (27) and the lower mold base (28). An ejector pin (29) is connected to the ejector plate (26). The ejector pin (29) passes through the female template (24) and the lower mold base (28) and contacts the injection molded part (3).

2. The injection mold with no gate residue according to claim 1, characterized in that: A flow channel (31) is provided at the middle position between the upper mold base (27) and the lower mold base (28), and injection molded product parts (3) are located on both sides of the flow channel (31).

3. The injection mold with no gate residue according to claim 2, characterized in that: A glue inlet insert (32) is provided below the flow channel (31). The glue inlet insert (32) is in contact with glue cutting inserts (35) on both sides. A cutter seat (33) is fixedly installed at the bottom of the glue cutting insert (35). An elastic element (34) is provided on the cutter seat (33).

4. The injection mold with no gate residue according to claim 3, characterized in that: A fixing plate (36) is fixedly installed at the bottom of the cutter holder (33), and two cylinders (37) are arranged below the fixing plate (36), with fastening screws (38) corresponding to the bottom of the two cylinders (37).

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