Three-plate mold structure of injection mold and injection mold
By setting up installation grooves in the fixed mold fixing plate of the injection mold and assembling the material dedusting plate, the problems of increasing the main channel length and high production cost caused by excessive mold thickness of the injection mold are solved, and the effect of reducing the mold thickness and the main channel length is achieved, reducing production costs and improving production efficiency.
Patent Information
- Application Number
- CN202422142297.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-02
- Publication Date
- 2025-06-10
- Estimated Expiration
- 2034-09-02
AI Technical Summary
The mold thickness of existing injection molds is large, resulting in an increase in the length of the main channel, requiring greater injection molding pressure and a larger injection molding machine, which increases production costs and is not conducive to improving production efficiency.
By providing mounting grooves in the fixed mold fixing plate and assembling the disassembly plate to the groove, the main channel length of the injection molding channel is reduced and the mold thickness of the injection mold is reduced.
The mold thickness of the injection mold and the main channel length of the injection mold channel are effectively reduced, and the use of larger injection molding pressure and larger size injection molding machines are avoided, which reduces production costs and improves production efficiency.
Smart Images
Figure CN222959083U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection molds, and particularly relates to a three-plate mold structure of an injection mold and an injection mold. Background Art
[0002] An injection mold is a tool for producing plastic products, which is mainly composed of a movable mold and a fixed mold. During production, the movable mold and the fixed mold are respectively fixed on an injection molding machine, and the molten plastic enters the mold cavity through an injection channel and is molded.
[0003] Generally, the fixed mold includes an upper fixing plate, a stripper plate and a fixed template arranged in sequence from top to bottom. Moreover, the superposition of the thicknesses of the above three will affect the length of the main runner of the injection channel and the mold thickness of the injection mold. Especially when the mold thickness of the injection mold exceeds the limit of the injection molding machine, a larger-sized injection molding machine is often used to match the production; in addition, when the mold thickness of the injection mold is relatively large, it will cause the main runner length or the sprue to be relatively long, and thus a larger injection pressure is required, so the production cost is high, and it is not conducive to improving production efficiency. Summary of the Utility Model
[0004] Therefore, to solve the above problems, the utility model provides a three-plate mold structure of an injection mold and an injection mold. By arranging the stripper plate in the installation groove of the fixed mold fixing plate, the mold thickness of the injection mold can be effectively reduced, and at the same time, the length of the main runner of the injection channel can be effectively reduced, and it is also possible to avoid using a larger injection pressure.
[0005] To achieve the above object, the technical solution provided by the utility model is as follows:
[0006] The utility model provides a three-plate mold structure of an injection mold, including a fixed mold fixing plate, a stripper plate and an injection channel; the injection channel penetrates through the fixed mold fixing plate and the stripper plate, the fixed mold fixing plate has an installation groove for accommodating the stripper plate, and the stripper plate is assembled in the installation groove to reduce the length of the main runner of the injection channel.
[0007] Further, the depth of the installation groove is not less than the thickness of the stripper plate.
[0008] Further, when the depth of the installation groove is equal to the thickness of the stripper plate, the reduction value of the main runner length corresponds to the depth of the installation groove.
[0009] Further, a first parting surface is arranged between the stripper plate and the fixed template of the injection mold, and a second parting surface is arranged between the fixed mold fixing plate and the stripper plate.
[0010] Further, an elastic member is arranged between the stripper plate and the fixed template to ensure that the first parting surface is opened during mold opening.
[0011] Furthermore, the elastic member includes a spring and is provided with a guiding post; the guiding post sequentially passes through the fixed template, the stripper plate and the fixed die holder, the spring is movably sleeved on the guiding post, and one end of the spring is connected to the fixed template and the other end is connected to the stripper plate.
[0012] The utility model provides an injection mold, which at least includes the three-plate mold structure of the above injection mold.
[0013] By the technical solution provided by the utility model, the following beneficial effects are achieved:
[0014] By arranging the stripper plate in the installation groove of the fixed die holder, the mold thickness of the injection mold can be effectively reduced, and at the same time, the length of the main runner of the injection channel can be reduced, thereby avoiding the selection of a larger injection pressure and a larger-sized injection machine. In this way, the production cost can be reduced and the production efficiency can be improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 Shown is a top view of the three-plate mold structure of the injection mold in Embodiment 1;
[0016] Figure 2 Shown is Figure 1 a cross-sectional view taken along A-A in
[0017] Figure 3 Shown is Figure 1 a cross-sectional view taken along B-B in
[0018] Figure 4 Shown is an external view of the three-plate mold structure of the injection mold in Embodiment 1. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] To further illustrate the embodiments, the utility model provides drawings. These drawings are a part of the disclosure of the utility model, mainly used to illustrate the embodiments and can be used to explain the operating principle of the embodiments in conjunction with the relevant descriptions in the specification. With reference to these contents, those of ordinary skill in the art should be able to understand other possible implementation manners and the advantages of the utility model. The components in the drawings are not drawn to scale, and similar component symbols are usually used to represent similar components.
[0020] The utility model will be further described below in conjunction with the drawings and specific embodiments.
[0021] Embodiment 1
[0022] Referring to Figures 1 to 4 shown, Embodiment 1 provides a three-plate mold structure of an injection mold, including as Figure 4The fixed mold clamping plate 1, the stripping plate 2 and the injection channel 3 shown, the injection channel 3 penetrates through the fixed mold clamping plate 1 and the stripping plate 2, as Figure 3 The fixed mold clamping plate 1 shown has an installation groove 11 for accommodating the stripping plate 2, and the stripping plate 2 is assembled in the installation groove 11 to reduce the length of the main runner of the injection channel 3. Specifically, the depth of the installation groove 11 is equal to the thickness of the stripping plate 2, and the reduction value of the length of the main runner of the injection channel 3 is related to the depth of the installation groove 11. That is, compared with the influence of the three-plate mold in the prior art on the length of the main runner of the injection channel 3, the thickness of the stripping plate 2 itself in this embodiment can be ignored.
[0023] In this embodiment, as Figure 2 shown, a first parting surface 5 is provided between the stripping plate 2 and the fixed template 4 of the injection mold, a second parting surface 6 is provided between the fixed mold clamping plate 1 and the stripping plate 2, and an elastic member is provided between the stripping plate 2 and the fixed template 4 to ensure that the first parting surface 5 is opened during mold opening.
[0024] During mold closing, first, the elastic force formed by compressing the elastic member is used to close the second parting surface 6, and then the first parting surface 5 is closed for the next injection molding.
[0025] During mold opening, first, the elastic force formed by the elastic member changing from compression to rebound is used to open the first parting surface 5, and then the second parting surface 6 is opened, so that the stripping action can be completed.
[0026] By arranging the stripping plate 2 in the installation groove 11 of the fixed mold clamping plate 1, the total thickness of the superposition of the fixed mold clamping plate 1 and the stripping plate 2 in the prior art is reduced to only the thickness of the fixed mold clamping plate 1 itself in this embodiment, that is, the mold thickness of the injection mold is effectively reduced (for example, the mold thickness of the injection mold in the prior art is 570 mm, and the mold thickness of the injection mold in this embodiment is 550 mm). At the same time, the length of the main runner of the injection channel 3 is reduced (for example, the length of the main runner in the prior art is 45 mm, and the length of the main runner in this embodiment is 25 mm). Furthermore, the selection of a larger injection pressure and a larger-sized injection molding machine can be avoided, so that the production cost can be reduced, the production efficiency can be improved, and the molding cycle can be ensured to be short and the material weight can be reduced.
[0027] Of course, in other embodiments, the depth of the installation groove 11 can also be greater than the thickness of the stripping plate 2 to ensure that the stripping plate 2 is embedded in the installation groove 11, but it should not be too deep.
[0028] In another preferred embodiment, as Figure 3As shown in the figure, the elastic member includes a spring 7. The number of springs 7 is eight, and guide columns 8 are respectively provided. The guide columns 8 sequentially pass through the fixed template 4, the stripper plate 2 and the fixed mold fixing plate 1. The spring 7 is movably sleeved on the corresponding guide column 8, and the lower end of the spring 7 abuts against the fixed template 4, and the upper end of the spring 7 abuts against the stripper plate 2, so as to ensure that the stripper plate 2 and the fixed mold fixing plate 1 are lifted by the spring 7 together during mold opening, and the first parting surface 5 is opened.
[0029] Embodiment 2
[0030] Embodiment 2 provides an injection mold, which at least includes the three-plate mold structure of the injection mold in Embodiment 1.
[0031] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes can be made to the present invention in terms of form and details without departing from the spirit and scope of the present invention defined by the appended claims, and all of them are within the protection scope of the present invention.
Claims
1. A three-plate mold structure for an injection mold, characterized in that: It includes a fixed mold fixing plate, a stripping plate and an injection channel; The injection channel passes through the fixed mold fixing plate and the stripper plate. The fixed mold fixing plate has a mounting groove for accommodating the stripper plate. The stripper plate is assembled in the mounting groove to reduce the main channel length of the injection channel.
2. The three-plate mold structure of the injection mold according to claim 1, characterized in that: The depth of the mounting groove is not less than the thickness of the stripping plate.
3. The three-plate mold structure of the injection mold according to claim 2, characterized in that: When the groove depth of the installation groove is equal to the thickness of the stripper plate, the reduction value of the main channel length corresponds to the groove depth of the installation groove.
4. The three-plate mold structure of the injection mold according to any one of claims 1 to 3, characterized in that: A first parting surface is arranged between the stripping plate and the fixed plate of the injection mold, and a second parting surface is arranged between the fixed plate of the fixed mold and the stripping plate.
5. The three-plate mold structure of the injection mold according to claim 4, characterized in that: An elastic member is arranged between the stripping plate and the fixed mold plate to ensure that the first parting surface is opened when the mold is opened.
6. The three-plate mold structure of the injection mold according to claim 5, characterized in that: The elastic member includes a spring and is equipped with a guide column; the guide column passes through the fixed mold plate, the stripping plate and the fixed mold fixing plate in sequence, the spring is movably mounted on the guide column, and one end of the spring is connected to the fixed mold plate, and the other end is connected to the stripping plate.
7. An injection mold, characterized in that: A three-plate mold structure comprising at least one of the injection molds according to any one of claims 1-6.