Small display screen frame injection mold

Abstract

The utility model discloses a small display screen frame body injection mold which comprises a fixed mold set arranged at the bottom and a movable mold set arranged at the top, and is characterized in that the movable mold set is composed of an upper mold plate, a positioning plate and a movable mold plate which are sequentially arranged from top to bottom, a first mold cavity is located on the lower side of the movable mold plate, and a second mold cavity is located on the lower side of the movable mold plate. The movable mold plate is further provided with a pouring pipe used for being connected with an injection molding machine, the pouring pipe injects glue into the first mold cavity through a first pouring gate and a second pouring gate, the first pouring gate and the second pouring gate are communicated in a crossed mode, and the pouring pipe is located at the crossed position of the first pouring gate and the second pouring gate. According to the small display screen frame injection mold, through corner injection molding and double-pouring-gate design, the forming quality and production efficiency of a thin-wall frame product are improved.

Description

Technical Field

[0001] This utility model relates to the field of injection molding of small display screen frames, and in particular to an injection mold for small display screen frames. Background Technology

[0002] In injection molding, mold structure design has a significant impact on product quality and production efficiency. Small parts typically use single-runner or center-gating molds. For thin-walled frame products, uneven filling or insufficient cooling can easily lead to product deformation, shrinkage, or surface defects. To improve the molding quality of thin-walled frame products, some molds have begun to adopt small multi-runner designs. However, improper runner arrangement can result in uneven filling pressure, affecting the product's appearance. Utility Model Content

[0003] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0004] A small display screen frame injection mold includes a fixed mold assembly at the bottom and a movable mold assembly at the top. The movable mold assembly is composed of an upper mold plate, a positioning plate, and a movable mold plate arranged sequentially from top to bottom. A first mold cavity is located below the movable mold plate. The movable mold plate is also provided with a gating pipe for connecting to an injection molding machine. The gating pipe injects glue into the first mold cavity through a first gating runner and a second gating runner. The first gating runner and the second gating runner are intersecting and connected. The gating pipe is located at the intersection of the first gating runner and the second gating runner.

[0005] Furthermore, the gating pipe is located at the center of the moving mold plate, and the first gating channel and the second gating channel are respectively connected to the four corners of the first mold cavity.

[0006] Furthermore, a mold closing positioning block is provided on the moving template.

[0007] Furthermore, a first guide post extending downwards is provided on the upper template, and the first guide post passes through the positioning plate and the moving template and is inserted into the fixed module.

[0008] Furthermore, an injection molding machine positioning ring is provided at the top of the upper template, and the gating pipe passes through the center of the injection molding machine positioning ring and is connected to the injection molding machine.

[0009] Furthermore, a second guide post is also provided inside the fixed module, extending in the opposite direction into the moving module.

[0010] The beneficial effects of this utility model are as follows:

[0011] The present invention provides a small display screen frame injection mold that improves the molding quality and production efficiency of thin-walled frame products through corner injection and double runner design. Attached Figure Description

[0012] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0013] Figure 1 This is a structural schematic diagram of the upper mold frame.

[0014] Figure 2 This is a structural diagram of the positioning plate.

[0015] Figure 3 This is a structural diagram of a moving template. Figure 1 .

[0016] Figure 4 This is a structural diagram of a moving template. Figure 2 .

[0017] Figure 5 This is a schematic diagram of the lower module structure.

[0018] Figure 6 This is a top view of the lower module.

[0019] Figure 7 yes Figure 6 AA sectional view. Detailed Implementation

[0020] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. The above description is for the purpose of simplifying the description of this utility model and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this utility model.

[0021] Unless otherwise specified, the singular forms “a,” “the,” and “the” used in this specification include the plural forms. The terms “comprising,” “including,” and “containing” used in this specification indicate the presence of the claimed feature but do not exclude the presence of one or more other features. The term “and / or” used in this specification includes any and all combinations of one or more of the relevant listed items.

[0022] In the specification, when an element is described as being "on," "fixed" to, "connected" to, or "joined" to another element, the element may be directly located on, fixed to, connected to, joined to, or in contact with the other element, or there may be an intermediate element present. In the specification, the description of a feature being arranged "adjacent" to another feature may refer to a feature having a portion that overlaps with the adjacent feature or a portion located above or below the adjacent feature.

[0023] It is understood that although the terms "first," "second," etc., may be used herein to describe different elements, these elements should not be limited by these terms. These terms are merely used to distinguish one element from another. Therefore, a first element may be referred to as a second element without departing from the teachings of this application.

[0024] Exemplary embodiments of this application will now be described with reference to the accompanying drawings. However, it should be understood that this application can be presented in many different ways and is not limited to the embodiments described below. It should also be understood that the embodiments disclosed herein can be combined in various ways to provide further additional embodiments. Throughout the drawings, the same reference numerals denote the same or functionally identical elements.

[0025] Figure 1 and Figure 2 The upper mold frame and positioning plate of the moving module are shown separately. The upper mold frame 100 is rectangular and has four first guide posts 103 at its four corners. An injection molding machine positioning ring 101 is provided on the side of the upper mold frame 100 facing the injection molding machine to facilitate its installation and fixation with the injection molding machine. The injection molding machine positioning ring 101 is specifically located in the center of the upper mold frame 100. The positioning plate 200 is mainly used to connect the upper mold frame 100 and the moving mold plate 300, and has holes 201 at its four corners for the first guide posts 103 to pass through.

[0026] Figure 3 and Figure 4 The main structure of the moving mold plate is shown. A first mold cavity 302 is located on the lower side of the moving mold plate 300. The first mold cavity 302, in conjunction with the frame component, extends rectangularly along the length of the moving mold plate 300. A first runner 305a and a second runner 305b are arranged within the moving mold plate 300, intersecting at a central intersection point 305c. A gating pipe 304, used for connecting to the injection molding machine, is also positioned at the central intersection point 305c, injecting material into the four corners of the first mold cavity 302 through the first runner 305a and the second runner 305b. Because the frame component is relatively thin, corner injection improves molding quality. The gating pipe 304 passes through the fixed mold plate 200 and the injection molding machine positioning ring 101, connecting to the injection molding machine through a through-hole 102 located in the center of the injection molding machine positioning ring 101.

[0027] Figures 5 to 7 The structure of the fixed mold assembly 400 is shown. Holes 404 are provided at the four corners of the fixed mold assembly 400, through which the first guide post 103 is inserted. The fixed mold assembly 400 is provided with a second guide post 402 extending towards the moving mold assembly to cooperate with the first guide post 103. The first guide post 103 and the second guide post 402 cooperate to allow the moving mold assembly to open and slide relative to the fixed mold assembly 400. The second mold cavity 401 is located on one side adjacent to the moving mold plate 300, and is formed in conjunction with the first mold cavity 302, then extends through an ejector pin 406 at the bottom of the fixed mold assembly 400. Cooling water channels 403 are provided on both the fixed mold assembly 400 and the moving mold plate 300 to ensure stable mold temperature during injection molding.

[0028] In a preferred embodiment, a spring 405 is also provided within the fixed mold assembly 400 to buffer the impact force during mold closing. A mold closing positioning block 301 is provided on the side of the moving mold plate 300 to improve mold closing accuracy.

[0029] During injection molding, the filling time is 3 seconds, and the holding pressure at 80 MPa is maintained for 5 seconds to ensure stable molding. The cooling water flow rate is controlled at 15 L / min, with a circulation cycle of 20 seconds. The final product surface finish is Ra0.8 μm.

Claims

1. A small display screen frame injection mold, comprising a fixed mold assembly at the bottom and a movable mold assembly at the top, characterized in that, The moving module is composed of an upper template, a positioning plate and a moving template arranged sequentially from top to bottom. The first mold cavity is located on the lower side of the moving template. The moving template is also provided with a gating pipe for connecting to an injection molding machine. The gating pipe injects glue into the first mold cavity through a first gating runner and a second gating runner. The first gating runner and the second gating runner are intersecting and connected. The gating pipe is located at the intersection of the first gating runner and the second gating runner.

2. The small display screen frame injection mold as described in claim 1, characterized in that, The gating pipe is located at the center of the moving mold plate, and the first gating channel and the second gating channel are connected to the four corners of the first mold cavity, respectively.

3. The small display screen frame injection mold as described in claim 2, characterized in that, A mold closing positioning block is provided on the moving template.

4. The small display screen frame injection mold as described in claim 2, characterized in that, A first guide post extending downwards is provided on the upper template. The first guide post passes through the positioning plate and the moving template and is inserted into the fixed module.

5. The small display screen frame injection mold as described in claim 2, characterized in that, An injection molding machine positioning ring is provided on the top of the upper template, and the gating pipe passes through the center of the injection molding machine positioning ring and is connected to the injection molding machine.

6. A small display screen frame injection mold as described in any one of claims 1 to 5, characterized in that, A second guide post is also provided inside the fixed module and extends in the opposite direction into the moving module.

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