Injection mold and Z-direction glue sealing structure thereof for inlay injection molding
By employing a sealed fit structure of fixed mold core, moving mold core, and side slider in the injection mold, the problem of poor sealing between the insert and the mold is solved, Z-axis sealing is achieved, leakage and flash defects are avoided, and the molding quality of insert injection molding is ensured.
Patent Information
- Application Number
- CN202520079164.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-14
- Publication Date
- 2026-01-20
- Estimated Expiration
- 2035-01-14
AI Technical Summary
Poor sealing between the insert and the traditional mold causes molten resin to enter the gap, resulting in defects such as glue leakage and flash.
The system employs a fixed mold core, a moving mold core, and a movable side slider to form a sealed fit. Combined with multiple sealing positions and ejector pin structures, it ensures that molten resin cannot enter the gaps. The Z-direction sealing is achieved through the contact between the side slider and the fixed and moving mold cores.
It effectively avoids defects such as glue leakage and flash, ensuring the molding quality of inlay injection molding.
Smart Images
Figure CN223812261U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to injection mold technical field, especially injection mold and its Z direction glue sealing structure for inlaying injection molding. BACKGROUND
[0002] Inlaying injection molding is to fix inlaying part in mold in advance, then inject plastic to form, and the local part of inlaying part is wrapped by the plastic part cooled and solidified after mold opening, so as to realize inlaying inlaying part in plastic part.
[0003] The connecting part between part inlaying part and plastic part is located at the upper end of inlaying part, and the plastic part wraps the inner wall and outer wall of inlaying part, but there is poor sealing between inlaying part and traditional mold, so that the molten resin enters the gap between them, causing defects such as glue leakage and flash. UTILITY MODEL CONTENTS
[0004] Therefore, the utility model provides an injection mold and its Z direction glue sealing structure for inlaying injection molding, which can realize Z direction glue sealing.
[0005] To achieve the above purpose, the utility model provides the technical scheme as follows:
[0006] The utility model provides a Z direction glue sealing structure for inlaying injection molding, which comprises fixed die and movable die which are arranged with an upper and lower distance, the movable die is used for inserting inlaying part and forming positioning setting for inlaying part, the upper part of inlaying part is used for connecting plastic part, and a plurality of movable lateral sliding blocks are further included, the plurality of lateral sliding blocks are respectively arranged on the outer periphery of inlaying part on the movable die, and respectively have abutting wall and matching surface for matching the shape of plastic part, when the mold is closed, the lateral sliding blocks respectively abut against the fixed die and the movable die and form sealing cooperation, the abutting wall abuts against the corresponding outer peripheral wall of inlaying part and forms sealing cooperation, the matching surface and the outer peripheral wall of inlaying part are arranged with a distance, and the adjacent lateral sliding blocks abut against each other and form sealing cooperation, so that the fixed die, the movable die and the plurality of lateral sliding blocks jointly form a cavity for inlaying injection molding and form Z direction glue sealing.
[0007] Further, the outer wall of inlaying part and the corresponding abutting wall jointly form a first glue sealing position, and the abutting wall forms a limiting setting for inlaying part.
[0008] Further, the movable die abuts against the bottom wall of inlaying part to block the through hole in inlaying part and form a second glue sealing position.
[0009] Further, at least one first inlaying part is further included, the first inlaying part is arranged in the movable die and inserted into inlaying part, and forms a third glue sealing position.
[0010] Further, at least one second insert is provided, which is arranged in the fixed half and extends into the cavity to form the plastic part.
[0011] Further, a third insert is provided, which is arranged in the through hole of the insert in a gap away from one end of the fixed half to form the plastic part and abuts against the movable half to form a sealed fit.
[0012] Further, a ejector pin is provided, which is movably arranged in the fixed half to eject the injection molded product after the insert injection molding.
[0013] Further, an oil cylinder is provided, which is drivingly connected to the lateral slide to drive the lateral slide to abut against or away from the insert.
[0014] The utility model provides a kind of injection mold, at least comprising the Z direction glue sealing structure for insert injection molding described above.
[0015] The utility model provides the technical scheme, with following beneficial effects:
[0016] When clamping, the lateral slide abuts against the fixed half and the movable half respectively and forms sealed fit, and the abutment wall of each lateral slide abuts against the corresponding outer peripheral wall of the insert and forms sealed fit, the abutment wall and the outer peripheral wall of the insert are arranged in a gap, to form part of the cavity of the plastic part, and adjacent lateral slides abut against each other and form sealed fit, so that the fixed half, the movable half and the plurality of lateral slides form the cavity for insert injection molding, and Z direction glue sealing is formed, and it is guaranteed that molten resin cannot enter the gap between each other during molding, thereby avoiding defects such as glue leakage and flash. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 It is the schematic diagram of Z direction glue sealing structure for insert injection molding in embodiment one, as shown in the figure;
[0018] Figure 2 It is the first position sectional view of Z direction glue sealing structure for insert injection molding in embodiment one, as shown in the figure;
[0019] Figure 3 It is the second position sectional view of Z direction glue sealing structure for insert injection molding in embodiment one, as shown in the figure; Figure 2 The enlarged schematic diagram of A area in the figure;
[0020] Figure 4 It is the second position sectional view of Z direction glue sealing structure for insert injection molding in embodiment one, as shown in the figure;
[0021] Figure 5 It is the second position sectional view of Z direction glue sealing structure for insert injection molding in embodiment one, as shown in the figure; Figure 4 The enlarged schematic diagram of B area in the figure;
[0022] Figure 6 Figure 2 shows an exploded view of the injection molded part product in Example One. DETAILED DESCRIPTION
[0023] To further illustrate the embodiments, the drawings of the utility model are provided. These drawings are part of the disclosure of the utility model, which mainly serves to illustrate the embodiments and can be used to explain the operating principle of the embodiments in conjunction with the related description of the specification. With reference to these contents, those skilled in the art should be able to understand other possible implementations 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.
[0024] The utility model will be further described in conjunction with the drawings and specific embodiments.
[0025] Example One
[0026] Reference Figures 1 to 6 As shown, Example One provides a Z-direction sealing structure for inlay injection molding (hereinafter referred to as Z-direction sealing structure) for inlaying the upper end of an inlay part 3 such as a metal part in a plastic part 4 by one-piece injection molding to form an injection molded part product as shown in Figure 6 At this time, the upper part of the inlay part 3 is used to integrally connect the plastic part 4.
[0027] As shown in Figure 1 The Z-direction sealing structure of the present embodiment includes a fixed mold core 1 and a movable mold core 2 arranged at an upper and lower distance, the movable mold core 2 is used to insert the inlay part 3 and form a positioning arrangement for the inlay part 3, and the inlay part 3 is positioned on the movable mold core 2 through the pre-set positioning groove of the movable mold core 2, and as shown in Figure 6 The inlay part 3 is a rectangular shape and has a plurality of through holes penetrating through its upper and lower surfaces.
[0028] And the Z-direction sealing structure of the present embodiment further includes an oil cylinder and four movable lateral sliding blocks 5, the four lateral sliding blocks 5 are respectively annularly arranged on the outer periphery of the inlay part 3 on the movable mold core 2, and each has an abutting wall 52 and a matching surface 51 for matching the shape of the plastic part 4, and the oil cylinder drives the corresponding lateral sliding block 5 to drive the lateral sliding block 5 to abut or move away from the outer peripheral wall of the inlay part 3.
[0029] When the mold is closed, the lateral sliding blocks 5 abut and form a sealing fit with the fixed mold core 1 and the movable mold core 2, the abutting wall 52 abuts and forms a sealing fit with the corresponding outer peripheral wall of the inlay part 3, the matching surface 51 and the outer peripheral wall of the inlay part 3 are arranged at a distance, and the adjacent lateral sliding blocks 5 abut and form a sealing fit with each other, so that the fixed mold core 1, the movable mold core 2 and the plurality of lateral sliding blocks 5 jointly form a cavity for inlay injection molding, and form a Z-direction sealing.
[0030] In the embodiment, the Z-direction glue sealing structure further comprises two first inserts 7, a plurality of second inserts 8 and one third insert 9. The two first inserts 7 are respectively arranged in the movable die core 2 and are inserted into the through holes on both sides of the insert 3, thereby further limiting the position of the insert 3. The plurality of second inserts 8 are respectively arranged in the fixed die core 1 and extend into the two sides of the cavity, thereby cooperating with the plastic part 4 to be formed. The lower end of the third insert 9 is arranged in the through hole in the center of the insert 3, thereby cooperating with the plastic part 4 to be formed. The lower end of the third insert 9 abuts against the movable die core 2 and forms a sealing fit.
[0031] As shown in Figure 2 , Figure 3 , Figure 4 and Figure 5 , when the mold is closed, the outer wall of the insert 3 and the abutting wall 52 corresponding thereto jointly form a first glue sealing position 53. The abutting wall 52 limits the position of the insert 3, thereby preventing the insert 3 from being easily deviated or loosened during the molding process. The top of the movable die core 2 abuts against the bottom wall of the insert 3, thereby sealing the through holes in the insert 3 and forming a second glue sealing position 21. The two first inserts 7 respectively form third glue sealing positions with the hole walls of the through holes on both sides of the insert 3.
[0032] The first glue sealing position 53, the second glue sealing position 21 and the third glue sealing positions effectively seal the molten resin in the cavity, thereby preventing defects such as glue leakage and flash.
[0033] The side sliding blocks 5 respectively abut against the fixed die core 1 and the movable die core 2 and form a sealing fit. The abutting wall 52 of each side sliding block 5 abuts against the corresponding outer peripheral wall of the insert 3 and forms a sealing fit. The mating surface 51 and the outer peripheral wall of the insert 3 are arranged at a distance, thereby forming part of the cavity of the plastic part 4. Adjacent side sliding blocks 5 abut against each other and form a sealing fit, thereby forming a cavity for insert injection molding with the fixed die core 1, the movable die core 2 and the plurality of side sliding blocks 5. The Z-direction glue sealing is achieved, and the molten resin cannot enter the gap between the side sliding blocks 5 during the molding process, thereby preventing defects such as glue leakage and flash.
[0034] Of course, the number and shape of the side sliding blocks 5 are determined according to the shape and structure of the insert 3.
[0035] More specifically, as shown in Figure 1 , Figure 2 , Figure 4 and Figure 5 , the Z-direction glue sealing structure of the embodiment further comprises two ejector pins 6. The ejector pins 6 are movably arranged in the fixed die core 1, thereby ejecting the injection molded product after the insert injection molding is completed.
[0036] Embodiment Two
[0037] Embodiment two provides an injection mold comprising at least the Z-direction encapsulation structure for inlay injection molding of embodiment one.
[0038] Although the utility model is specifically shown and introduced in combination with the preferred embodiments, it should be understood by those skilled in the art that various changes can be made to the utility model in form and details without departing from the spirit and scope of the utility model defined in the appended claims, and all of them are within the protection scope of the utility model.
Claims
1. A Z-direction sealing structure for insert injection molding, comprising a fixed mold core and a movable mold core spaced vertically, the movable mold core being used to insert an insert and to position the insert, the upper part of the insert being used to connect a plastic part, characterized in that: A plurality of movable lateral sliders are further included; The plurality of lateral sliders are respectively arranged around the outer periphery of the insert on the movable die core, and each has an abutting wall and a matching surface for matching the shape of the plastic part; During clamping, the lateral sliders respectively abut against the fixed die core and the movable die core and form a sealed fit, the abutting wall abuts against the corresponding outer peripheral wall of the insert and forms a sealed fit, the matching surface and the outer peripheral wall of the insert are arranged at a distance, and adjacent lateral sliders abut against each other and form a sealed fit, so that the fixed die core, the movable die core and the plurality of lateral sliders collectively form a cavity for insert injection molding, and form a Z-direction glue sealing.
2. The Z-direction encapsulation structure for insert injection molding of claim 1, wherein: The outer wall of the insert and the corresponding abutting wall collectively form a first glue sealing position; the abutting wall forms a limiting arrangement for the insert.
3. The Z-direction encapsulation structure for inlay injection molding of claim 2, wherein: The movable die core abuts against the bottom wall of the insert to block the through hole in the insert and form a second glue sealing position.
4. The Z-direction encapsulation structure for insert injection molding of claim 1, wherein: Further comprising at least one first insert, the first insert is arranged through the movable die core and is inserted into the insert to form a third glue sealing position.
5. The Z-direction encapsulation structure for insert injection molding of claim 1, wherein: Further comprising at least one second insert, the second insert is arranged through the fixed die core and extends into the cavity to match the molding of the plastic part.
6. The Z-direction encapsulation structure for insert injection molding of claim 1, wherein: Further comprising a third insert, one end of the third insert away from the fixed die core is arranged at a gap and is inserted into the through hole of the insert to match the molding of the plastic part and abuts against the movable die core to form a sealed fit.
7. The Z-direction encapsulation structure for insert injection molding according to any one of claims 1-6, wherein: Further comprising a ejector pin, the ejector pin is movably arranged through the fixed die core to eject the completed insert injection molded injection molded product.
8. The Z-direction encapsulation structure for insert injection molding according to any one of claims 1-6, wherein: Further comprising an oil cylinder, the oil cylinder is drivingly connected to the lateral sliders to drive the lateral sliders to abut against or away from the insert.
9. An injection mold characterized by: At least the Z-direction glue sealing structure for insert injection molding as claimed in any one of claims 1-8 is included.