Positioning structure of embedded part in plastic mold
By using the pushing member and the elastic pressing member in the positioning structure of the insert in the mold, the problem of the insert being deformed or displaced by the glue during the injection molding process is solved, and the stable positioning of the insert and the improvement of product quality is achieved.
Patent Information
- Application Number
- CN202421803104.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2025-05-09
- Estimated Expiration
- 2034-07-29
AI Technical Summary
In the mold forming process, the insert is easily deformed or displaced by the glue during the injection molding process, resulting in poor molding quality.
A positioning structure for the insert in the mold is designed. By setting up a pushing member and a pressing member on the moving and fixed molds, the insert is pressed from both sides of the insert when closing the mold, and the elastic member is used to achieve adjustable and controllable tightening force.
Effectively avoid and slow down the deformation and displacement of the inserts by glue during injection molding, ensure product quality, and avoid the risk of damaged inserts during mold clamping.
Smart Images
Figure CN222844598U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of plastic molds, in particular to a positioning structure of an embedded part in a plastic mold. Background Art
[0002] In-mold molding is a production method that places an insert (such as a metal part) into the cavity of a plastic mold and then performs injection molding. The insert can be directly wrapped into the plastic part without the need for subsequent assembly processes, which can improve product quality and reduce assembly costs. However, in actual production, the positioning of the insert often becomes a difficult point in mold design, because most of the inserts are relatively thin, and the high temperature and high pressure glue during the molding process can easily deform or shift the insert, causing deformation of the insert or change in its relative position with the plastic structure, which in turn affects the molding quality. Utility Model Content
[0003] In response to the problems existing in the above-mentioned prior art, the utility model provides a positioning structure for an embedded part in a plastic mold, which can press the embedded part from two opposite sides of the embedded part when the mold is closed, so as to achieve the purpose of avoiding and reducing the deformation and displacement of the embedded part by the glue during the injection molding process. The pressing force on one side of each embedded part is adjustable and controllable, so as to avoid the embedded part being clamped during the mold closing process and ensure product quality.
[0004] In order to solve the above technical problems, a technical solution adopted by the utility model is as follows:
[0005] A positioning structure of an embedded part in a mold, wherein a movable mold and a fixed mold are provided on the mold, an ejector pin, a movable mold plate and a movable mold core are provided on the movable mold, a mold plate and a fixed mold core are provided on the fixed mold, and the ejector pin can lift the product on the movable mold core under the action of an external force; one or more embedded parts are provided at the end of the movable mold core facing the fixed mold core; the positioning structure includes one or more ejector parts and one or more pressing parts, wherein:
[0006] Each of the ejector members is slidably mounted on the movable mold core, one end of each of the ejector members extends to one side of the insert member, and the other end of each of the ejector members is drivingly connected to one of the ejector pins;
[0007] Each of the clamping members is arranged on the fixed mold plate, and one end thereof passes through the fixed mold core and is slidably connected thereto. When the mold is closed, each of the clamping members matches with a pushing member and respectively abuts against two opposite side walls of an insert.
[0008] As a further elaboration of the above technical solution:
[0009] In the above technical solution, each of the clamping members is an elastic clamping member, and includes a positioning block, a pressure rod, an elastic member and a pressure plate. Each of the positioning blocks can be detachably fixed on the fixed mold plate. Each of the pressure rods extends along the mold closing direction and is slidably mounted on a positioning block, and both ends thereof extend to the outside of the two sides of the positioning block. Each of the elastic members is sleeved on the end of a pressure rod facing the movable mold core. Each of the pressure plates can be detachably mounted on the end of a pressure rod facing the movable mold core, and both ends thereof extend to the outside of the fixed mold core. Each of the fixed mold cores is provided with a plurality of avoidance hole grooves that are matched one by one with the pressure rods and the pressure plates.
[0010] In the above technical solution, each of the pressing plates is detachably fixedly connected to at least one pressing rod.
[0011] In the above technical solution, each of the pressure rods is a stepped rod, the larger end of which faces the pressure plate, and the elastic member is arranged between the shoulder and the positioning block.
[0012] In the above technical solution, the positioning structure also includes one or more side pressure members, each of which is slidably mounted on the movable mold plate, and one end portion thereof extends to the side of the movable mold core and adapts to the contour. The movable mold core is a boss structure, and one or more of the above-mentioned inserts are provided on the side walls facing each of the side pressure members.
[0013] In the above technical solution, more than one driving device is arranged on the movable mold plate, each of which is transmission-connected to the side pressure member through a side push transmission member, and can be driven to slide on the movable mold plate to approach or move away from the movable mold core.
[0014] In the above technical solution, each of the side push transmission members includes a side push plate and a push rod, each of the push rods is transmission-connected to a driving device, and each of the push plates is detachably fixed to a side pressure member and slidably connected to the movable template.
[0015] In the above technical solution, the fixed mold core and / or the fixed mold plate are provided with a slot adapted to the side pressure piece.
[0016] Compared with the prior art, the beneficial effects of the utility model are as follows: by respectively arranging a pushing piece and a clamping piece on the movable mold core and the fixed mold core, the embedded piece can be respectively clamped from two opposite sides along the mold closing direction when the mold is closed; by arranging a side pressure piece on the side of the movable mold core, the embedded piece can be clamped from the side of the movable mold core, thereby achieving the purpose of avoiding and slowing down the deformation and displacement of the embedded piece by the glue during the injection molding process; by arranging an elastic piece on the clamping piece and connecting the side pressure piece with the driving device in a transmission manner, the clamping force on one side of each embedded piece can be adjusted and controllable, thereby avoiding the embedded piece from being clamped during the mold closing process and ensuring product quality. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 is a structural schematic diagram of the positioning structure in this embodiment;
[0018] Figure 2 Schematic diagram of the structure of the movable mold core and its upper ejector in this embodiment;
[0019] Figure 3 It is a structural schematic diagram of the fixed mold core in this embodiment;
[0020] Figure 4 A schematic diagram of the matching structure of some of the pushing members and the pressing members in the above embodiment;
[0021] Figure 5 Schematic diagram of the structure of the movable template and the structural parts thereon in this embodiment;
[0022] Figure 6 Schematic diagram of the structure of the side pressure member in this embodiment.
[0023] In the figure: 10, movable mold plate; 20, movable mold core; 30, fixed mold core; 31, avoidance hole groove; 32, clamping groove; 40, embedded part; 50, push part; 60, clamping part; 61, clamping block; 62, pressure rod; 63, elastic part; 64, pressure plate; 70, side pressure part; 80, driving device; 90, side push transmission part; 91, push plate; 92, push rod. DETAILED DESCRIPTION
[0024] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0025] The embodiments described with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and cannot be understood as limiting the present application. In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, "several" and "multiple" mean two or more, unless otherwise clearly and specifically defined. In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a communication between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. In this application, unless otherwise clearly specified and limited, the first feature "above" or "below" the second feature can include the first and second features being in direct contact, or it can include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature "above", "above" and "above" the second feature include the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature "below", "below" and "below" the second feature include the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.
[0026] like Figure 1-3 As shown, in the positioning structure of the embedded part in the mold, a movable mold and a fixed mold are provided on the mold, an ejector, a movable mold plate 10 and a movable mold core 20 are provided on the movable mold, and a mold plate and a fixed mold core 30 are provided on the fixed mold. The ejector can lift the product on the movable mold core 20 under the action of external force; one or more embedded parts 40 are provided at the end of the movable mold core 20 facing the fixed mold core 30; the positioning structure includes one or more ejector parts 50 and one or more pressing parts 60, wherein:
[0027] Each ejector 50 is slidably mounted on the movable mold core 20, one end of which extends to one side of an insert 40, and the other end is drivingly connected to an ejector pin;
[0028] Each clamping member 60 is disposed on the fixed mold plate, and one end thereof passes through the fixed mold core 30 and is slidably connected thereto. When the mold is closed, each clamping member 60 matches a push member 50 and respectively abuts against two opposite side walls of an insert 40.
[0029] like Figure 4 As shown, each clamping member 60 is an elastic clamping member, and includes a positioning block 61, a pressure rod 62, an elastic member 63 and a pressure plate 64. Each positioning block 61 is detachably fixed on the fixed mold plate, each pressure rod 62 extends along the mold closing direction and is slidably mounted on a positioning block, and its two ends extend to the outside of the two sides of the positioning block, each elastic member 63 is sleeved on the end of a pressure rod 62 facing the movable mold core 20, and each pressure plate 64 is detachably mounted on the end of a pressure rod 62 facing the movable mold core 20, and its ends extend to the outside of the fixed mold core 30; each fixed mold core 30 is provided with a plurality of avoidance grooves 31 that are matched one by one with the pressure rod 62 and the pressure plate 64.
[0030] In this embodiment, each pressing plate 64 is detachably fixedly connected to one or more pressing rods 62 . Each pressing rod 62 is a stepped rod with its larger end facing the pressing plate 64 . An elastic member 63 is provided between its shoulder and the positioning block 61 .
[0031] The positioning structure in the above embodiment is applicable to the case where only the insert 40 is placed in the opposite end of the movable mold core 20 or the fixed mold core 30. During operation, the insert 40 is placed on the movable mold core 20 or the fixed mold core 30, so that the top of the push member 50 abuts against one end of the insert 40 or the end of the pressing member 60 abuts against one end of the insert 40. After completion, the mold is closed, and the movable mold drives the movable mold plate 10 and the movable mold core 20 to move toward the fixed mold core 30. During the process, the push member 50 abuts against the insert 40 from one side. The movable mold continues to move, and the push member 50 pushes the insert 40 to press the pressing plate 64 to drive the pressure rod 62 to slide on the fixed mold core 30. One end of the elastic member 63 is limited by the fixed mold plate, and compression deformation occurs and limits the displacement of the pressure rod 62 until the pressure plate 64 and the fixed mold core 30 move to the set position. At this time, the mold closing action is completed, and the push member 50 and the pressure plate 64 completely abut against both sides of the insert 40. After the molding is completed, the movable mold leaves the fixed mold, and the ejector pin pushes the ejector 50 to lift the embedded part 40 to eject the product from the movable mold core 20.
[0032] The positioning structure in the following embodiment is suitable for the case where the side wall of the movable mold core 20 is also provided with an insert 40, but it is difficult to provide a matching pressing member 60 for the fixed mold core 30. Figure 5-6As shown, in another embodiment of the utility model, the positioning structure also includes one or more side pressure members 70, each of which is slidably mounted on the movable mold plate 10, and one end thereof extends to the side of the movable mold core 20 and adapts to the contour. The movable mold core 20 is a boss structure, and one or more inserts 40 are provided on the side walls facing each side pressure member 70.
[0033] In this embodiment, more than one driving device 80 is provided on the movable template 10, and each driving device 80 is transmission-connected to the side pressure member 70 through a side push transmission member 90, and can drive it to slide on the movable template 10 to approach or move away from the movable mold core 20; each side push transmission member 90 includes a side push plate 91 and a push rod 92, each push rod 92 is transmission-connected to a driving device 80, and each push plate 92 is detachably fixed to a side pressure member 70 and is slidingly connected to the movable template 10; a card slot 32 adapted to the side pressure member 70 is provided on the fixed mold core 30 and / or the fixed template.
[0034] The utility model provides a push piece 50 and a clamping piece 60 on the movable mold core 20 and the fixed mold core 30 respectively, so that the embedded part 40 can be pressed from two opposite sides along the mold closing direction during mold closing. By providing a side pressure piece 70 on the side of the movable mold core 20, the embedded part 40 can be pressed from the side of the movable mold core 20, thereby achieving the purpose of avoiding and mitigating the deformation and displacement of the embedded part by the glue during the injection molding process; by providing an elastic piece 63 on the clamping piece 60 and connecting the side pressure piece 70 with the driving device 80, the clamping force on one side of each embedded part can be adjusted and controlled, thereby avoiding the embedded part from being clamped during the mold closing process and ensuring product quality.
[0035] The above does not limit the technical scope of the present invention. Any modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention are still within the scope of the technical solution of the present invention.
Claims
1. A positioning structure for an embedded part in a mold, wherein a movable mold and a fixed mold are provided on the mold, wherein an ejector pin, a movable mold plate and a movable mold core are provided on the movable mold, and a mold plate and a fixed mold core are provided on the fixed mold, wherein the ejector pin can lift up the product on the movable mold core under the action of an external force; : The movable mold core is provided with one or more inserts at the end facing the fixed mold core; the positioning structure includes one or more push members and one or more pressing members, wherein: Each of the ejector members is slidably mounted on the movable mold core, one end of each of the ejector members extends to one side of the insert member, and the other end of each of the ejector members is drivingly connected to one of the ejector pins; Each of the clamping members is arranged on the fixed mold plate, and one end thereof passes through the fixed mold core and is slidably connected thereto. When the mold is closed, each of the clamping members matches with a pushing member and respectively abuts against two opposite side walls of an insert.
2. The positioning structure of the mold insert according to claim 1, characterized in that: Each of the clamping members is an elastic clamping member, and includes a positioning block, a pressure rod, an elastic member and a pressure plate. Each of the positioning blocks is detachably fixed on the fixed mold plate. Each of the pressure rods extends along the mold closing direction and is slidably mounted on a positioning block, and both ends thereof extend to the outside of both sides of the positioning block. Each of the elastic members is sleeved on the end of a pressure rod facing the movable mold core. Each of the pressure plates is detachably mounted on the end of a pressure rod facing the movable mold core, and its ends extend to the outside of the fixed mold core. Each of the fixed mold cores is provided with a plurality of avoidance holes that are matched one by one with the pressure rods and the pressure plates.
3. The positioning structure of the mold insert according to claim 2, characterized in that: Each of the pressing plates is detachably fixedly connected to at least one of the pressing rods.
4. The positioning structure of the mold insert according to claim 2, characterized in that: Each of the pressing rods is a stepped rod, with a larger end thereof facing the pressing plate, and the elastic member is arranged between the shoulder thereof and the positioning block.
5. The positioning structure of the mold insert according to any one of claims 1 to 4, characterized in that: The positioning structure also includes one or more side pressure members, each of which is slidably mounted on the movable mold plate, and one end thereof extends to the side of the movable mold core and adapts to the contour. The movable mold core is a boss structure, and one or more of the above-mentioned inserts are provided on the side walls facing each of the side pressure members.
6. The positioning structure of the mold insert according to claim 5, characterized in that: More than one driving device is arranged on the movable die plate, and each of the driving devices is transmission-connected with the side pressure member through a side push transmission member, and can be driven to slide on the movable die plate to approach or move away from the movable die core.
7. The positioning structure of the mold insert according to claim 6, characterized in that: Each of the side push transmission members includes a side push plate and a push rod, each of the push rods is in transmission connection with a driving device, and each of the push plates is detachably fixedly connected to a side pressure member and is slidably connected to the movable template.
8. The positioning structure of the mold insert according to claim 5, characterized in that: The fixed mold core and / or the fixed mold plate are provided with a slot adapted to the side pressure piece.