Injection mold for plastic product with micropores
By adopting a triple precision positioning structure in the mold kernel part of the injection mold, the problem of fine positioning offset of the existing mold is solved, and high-precision mold state and stable plastic product production are achieved.
Patent Information
- Application Number
- CN202422198849.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-06
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-06
AI Technical Summary
During injection molding, existing injection molds have deviations in fine positioning structures, which affects the service life of the mold and easily causes damage to the insertion position and fine precision products.
A triple precision positioning structure is adopted, and the front hole, front lock and plug are provided in the mold part, as well as the rear hole, rear lock and slot parts. Positioning calibration is achieved through the docking of these structures, reducing friction losses and maintaining high accuracy.
Through the triple precision positioning structure, friction loss during mechanical movement of injection molds is reduced, ensuring that the mold maintains high accuracy and stable production of plastic products with high dimensional tolerance requirements and small characteristics.
Smart Images
Figure CN223013776U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of injection molds, and particularly relates to an injection mold for plastic products with micropores. Background Art
[0002] For some plastic products with micropores, such as in a floor sweeping robot, in order to ensure the humidity balance of the mop, plastic parts with dripping micropores are provided (as shown in Figure 1 ), the micropores on such plastic parts are required to have a small diameter and consistent size, so the aperture accuracy requirement is high. The injection molding method of such plastic parts generally uses a needle-shaped insert to pierce into the mold cavity, and injection molding is carried out around the needle-shaped insert. After the needle-shaped insert is withdrawn, micropores can be formed at the original position.
[0003] However, most of the existing injection molds use structures such as side locks and tigers' mouths for precise positioning during injection molding. These traditional precise positioning structures are very likely to cause deviation of the mold's precise positioning due to the deviation generated during machining, resulting in damage to the insert position and small and precise products on the mold and die pressing problems during the normal opening and closing of the mold, thus affecting the service life of the mold. Summary of the Utility Model
[0004] The technical problem to be solved by the utility model is to provide an injection mold for plastic products with micropores, which adopts a triple precise positioning structure in the mold core part to reduce the machining deviation of the mold core and the frictional loss generated during the mechanical movement of the injection mold.
[0005] To solve the above technical problems, the utility model adopts the following technical solutions:
[0006] An injection mold for plastic products with micropores, comprising a first mold and a second mold arranged oppositely. A front mold core is provided on the side of the first mold facing the second mold, and a rear mold core is provided on the side of the second mold facing the first mold. A plurality of first forming areas are provided at the central part of the side of the front mold core facing the rear mold core, and a plurality of second forming areas are provided at the central part of the side of the rear mold core facing the front mold core. When the molds are closed, a cavity is formed between the first forming area and the second forming area. A plurality of front tigers' mouths, front side locks and plug parts are further provided on the side of the front mold core facing the rear mold core, and the plurality of front tigers' mouths, front side locks and plug parts are arranged around the first forming area. A plurality of rear tigers' mouths, rear side locks and slot parts are further provided on the side of the rear mold core facing the front mold core, and the plurality of rear tigers' mouths, rear side locks and slot parts are arranged around the second forming area. The front tigers' mouths, front side locks and plug parts are respectively used for docking and positioning with the rear tigers' mouths, rear side locks and slot parts.
[0007] In some embodiments, there are four front thumbs, four front locks, and four plug members. The four front thumbs are respectively disposed at the four corners of the front mold core, the four front locks are respectively detachably fixed to the four sides of the front mold core, and the four plug members are spaced apart on the front mold core; there are four rear thumbs, four rear locks, and four slot members. The four rear thumbs are respectively disposed at the four corners of the rear mold core, the four rear locks are respectively detachably fixed to the four sides of the rear mold core, and the four slot members are spaced apart on the rear mold core.
[0008] In at least one embodiment, mounting grooves for mounting the front locks are provided on the four sides of the front mold core, and mounting grooves for mounting the rear locks are provided on the four sides of the rear mold core; mounting holes for mounting the plug members are provided on the front mold core, and mounting holes for mounting the slot members are provided on the rear mold core.
[0009] Compared with the prior art, the present utility model at least achieves the following beneficial effects:
[0010] 1. The present utility model directly makes a precise positioning structure on the mold core part. When the injection mold is closed, the front thumbs, front locks, and plug members on the front mold core are respectively connected to the rear thumbs, rear locks, and slot members on the rear mold core to achieve positioning and calibration. Through the triple precise positioning structure, the frictional loss generated during the mechanical movement of the injection mold is reduced as much as possible, so that the mold maintains a high-precision state, ensuring that plastic products with high dimensional tolerance requirements and small features can be stably produced;
[0011] 2. Since a triple precise positioning structure is provided on the front mold core and the rear mold core, when the front mold core and the rear mold core are manufactured and processed, the steel materials of the front mold core and the rear mold core can first process the front thumbs and the rear thumbs, and then the front mold core and the rear mold core can be locked with screws by using the positioning of the front thumbs and the rear thumbs. Then, the mounting structures of the front locks and the rear locks are processed on the front mold core and the rear mold core, the front mold core and the rear mold core are installed with the front locks and the rear locks and combined, and finally the mounting structures of the plug members and the slot members are processed. This sequential positioning and processing method can reduce the deviation generated by machining and ensure that the front mold core and the rear mold core meet the high-precision requirements. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Now, one or more embodiments of the present utility model will be described only by way of example with reference to the accompanying drawings, in which:
[0013] Figure 1 is a schematic structural view of a plastic part with drip micropores;
[0014] Figure 2 is a schematic structural view of an application embodiment;
[0015] Figure 3 is a schematic structural view of the first mold of the application embodiment;
[0016] Figure 4Schematic structural diagram of the second mold of the application embodiment;
[0017] Figure 5 Schematic structural diagram of the front and rear jaws of the application embodiment;
[0018] Figure 6 Schematic structural diagram of the front and rear locks of the application embodiment;
[0019] Figure 7 Schematic structural diagram of the plug member and the socket member of the application embodiment.
[0020] The reference numerals in the figure are: 1, the first mold; 11, the panel; 12, the front template; 2, the second mold; 21, the bottom plate; 22, the square iron; 23, the rear template; 3, the front mold core; 31, the first molding area; 32, the front jaw; 33, the front lock; 34, the plug member; 341, the cylindrical plug; 4, the rear mold core; 41, the second molding area; 42, the rear jaw; 43, the rear lock; 44, the socket member; 441, the cylindrical socket; 5, the installation groove; 6, the installation hole; 7, the runner; 8, the hot nozzle; 9, the guide sleeve; 10, the guide post; 20, the balance block. Detailed implementation manners
[0021] The present utility model will be described in detail below with reference to the exemplary embodiments in the drawings. However, it should be understood that the present application can be implemented in various different forms and should not be construed as limited to the embodiments described herein. These embodiments are provided herein to make the disclosure of the present application more complete and to fully convey the concept of the present application to those skilled in the art.
[0022] In the description of the present application, it should be understood that the orientation or positional relationship indicated by terms such as "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It 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. Therefore, it should not be construed as a limitation to 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 specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present application, the meaning of "several" and "multiple" is two or more, unless otherwise specifically defined. In the present application, unless otherwise clearly specified and limited, terms such as "install", "connect", "join", "fix", etc. shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances. In the present application, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may include the direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through other features between them. Moreover, the first feature being "above", "over" and "on" the second feature includes that the first feature is directly above and obliquely above the second feature, or simply means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "beneath" and "under" the second feature includes that the first feature is directly below and obliquely below the second feature, or simply means that the horizontal height of the first feature is lower than that of the second feature.
[0023] Such as Figures 2 to 7As shown in the figure, the injection mold for a plastic product with micropores according to the embodiment of the present application includes a first mold 1 and a second mold 2 which are oppositely arranged. On one side of the first mold 1 facing the second mold 2, there is a front mold core 3. On one side of the second mold 2 facing the first mold 1, there is a rear mold core 4. In the central part of the side of the front mold core 3 facing the rear mold core 4, there are several first forming areas 31. In the central part of the side of the rear mold core 4 facing the front mold core 3, there are several second forming areas 41. When the molds are closed, a cavity is formed between the first forming area 31 and the second forming area 41. On the side of the front mold core 3 facing the rear mold core 4, there are also several front locking jaws 32, front side locks 33 and plug parts 34, and the several front locking jaws 32, front side locks 33 and plug parts 34 are arranged around the first forming area 31. On the side of the rear mold core 4 facing the front mold core 3, there are also several rear locking jaws 42, rear side locks 43 and slot parts 44, and the several rear locking jaws 42, rear side locks 43 and slot parts 44 are arranged around the second forming area 41. The front locking jaws 32, front side locks 33 and plug parts 34 are respectively used to dock and position with the rear locking jaws 42, rear side locks 43 and slot parts 44.
[0024] The working principle of the present utility model is as follows: When the injection mold is closed, the front locking jaws 32, front side locks 33 and plug parts 34 on the front mold core 3 are respectively connected with the rear locking jaws 42, rear side locks 43 and slot parts 44 on the rear mold core 4 to achieve positioning and calibration. Through triple precise positioning, the friction and wear generated during the mechanical movement of the injection mold are reduced as much as possible, so that the mold maintains a high-precision state, and it can stably produce plastic products with high dimensional tolerance requirements and fine features, thus being applicable to the production of plastic parts with dripping micropores.
[0025] Optionally, there are four front locking jaws 32, front side locks 33 and plug parts 34 respectively. The four front locking jaws 32 are respectively arranged at the four corners of the front mold core 3. The four front side locks 33 are respectively detachably fixed on the four sides of the front mold core 3. The four plug parts 34 are arranged at intervals and are detachably fixed on the front mold core 3. There are four rear locking jaws 42, rear side locks 43 and slot parts 44 respectively. The four rear locking jaws 42 are respectively arranged at the four corners of the rear mold core 4. The four rear side locks 43 are respectively detachably fixed on the four sides of the rear mold core 4. The four slot parts 44 are arranged at intervals and are detachably fixed on the rear mold core 4. The present application does not limit the number of the front locking jaws 32, front side locks 33, plug parts 34, rear locking jaws 42, rear side locks 43 and slot parts 44, and can be reasonably increased or decreased on the premise of ensuring effective positioning and calibration of the mold. It should be noted that the detachable design of the front side locks 33, rear side locks 43, plug parts 34 and slot parts 44 enables operators to replace them regularly after wear, so that the mold can maintain a high-precision state for a long time.
[0026] Optionally, mounting grooves 5 for mounting front side locks 33 are provided on four sides of the front mold core 3, and mounting grooves 5 for mounting rear side locks 43 are provided on four sides of the rear mold core 4; mounting holes 6 for mounting plug members 34 are provided on the front mold core 3, and mounting holes 6 for mounting socket members 44 are provided on the rear mold core 4. It should be noted that the manufacturing process flow of this injection mold is as follows: The steel materials of the front mold core 3 and the rear mold core 4 are first processed to form front jaws 32 and rear jaws 42, and then the front mold core 3 and the rear mold core 4 are locked with screws by using the positioning of the front jaws 32 and the rear jaws 42. Then, a slow wire electrical discharge machining, that is, a low-speed wire electrical discharge machining, is used to machine mounting grooves for the front side locks 33 on four sides of the front mold core 3, and mounting grooves for the rear side locks 43 on four sides of the rear mold core 4. After the front mold core 3 and the rear mold core 4 are respectively equipped with the front side locks 33 and the rear side locks 43 and combined, finally, the mounting holes 6 for the plug members 34 and the socket members 44 are machined by slow wire electrical discharge machining. In this way, machining deviation can be reduced, and it is ensured that the front mold core 3 and the rear mold core 4 meet the high-precision requirements. By setting the structure of triple precise positioning in the present utility model, not only can machining deviation be reduced during the manufacturing of the mold cores, but also the frictional losses generated by the mechanical movement of the injection mold can be minimized as much as possible during the mold clamping.
[0027] Specifically, the plug member 34 is provided with a cylindrical plug 341 protruding towards the rear mold core 4, and the socket member 44 is provided with a cylindrical socket 441 inserted into the cylindrical plug 341. During mold clamping, the connection between the cylindrical plug 341 and the cylindrical socket 441 can achieve precise positioning.
[0028] Optionally, a plurality of first forming areas 31 and a plurality of second forming areas 41 are both distributed at intervals in an arc shape. A runner 7 communicating with the first forming areas 31 and the second forming areas 41 is formed between the front mold core 3 and the rear mold core 4, and a hot nozzle 8 communicating with the runner 7 is installed on the first mold 1.
[0029] A guide sleeve 9 is provided on the first mold 1; a guide post 10 adapted to the guide sleeve 9 is provided on the second mold 2. The guide post 10 is inserted into the guide sleeve 9, and the cooperation between the guide post 10 and the guide sleeve 9 can provide guidance for the mold clamping of the mold.
[0030] A plurality of balance blocks 20 are detachably fixed on the surface of the first mold 1 facing the second mold 2. The balance blocks 20 balance the center of gravity of the mold by adjusting the weight, thereby reducing the vibration and noise of the mold during the injection process. At the same time, the balance blocks 20 can also improve the stability and precision of the mold, which helps to produce higher-quality injection molded products.
[0031] The first mold 1 includes a panel 11 and a front template 12 connected in sequence, and the panel 11 is installed on an injection molding machine; the second mold 2 includes a bottom plate 21, a square iron 22 and a rear template 23 connected in sequence, and the bottom plate 21 is installed on an injection molding machine.
[0032] It should be understood that all of the above embodiments are exemplary rather than restrictive. Under the concept of the present utility model, any modifications, equivalent changes, and modifications made to the specific embodiments described above by those skilled in the art still fall within the scope of the technical solution of the present utility model.
Claims
1. An injection mold for a plastic product with micropores, comprising a first mold and a second mold arranged opposite to each other, wherein the first mold is provided with a front mold core on a side facing the second mold, and the second mold is provided with a rear mold core on a side facing the first mold, characterized in that: A plurality of first molding areas are provided at the central part of one side of the front mold core facing the rear mold core, and a plurality of second molding areas are provided at the central part of one side of the rear mold core facing the front mold core. When the molds are closed, a cavity is formed between the first molding areas and the second molding areas. A plurality of front jaws, front side locks and plug parts are also provided at one side of the front mold core facing the rear mold core, and the plurality of the front jaws, front side locks and plug parts are arranged around the first molding area. A plurality of rear jaws, rear side locks and slot parts are also provided at one side of the rear mold core facing the front mold core, and the plurality of the rear jaws, rear side locks and slot parts are arranged around the second molding area. The front jaws, front side locks and plug parts are respectively used for docking and positioning with the rear jaws, rear locks and slot parts.
2. The injection mold for a plastic product with micropores according to claim 1, characterized in that: There are four front jaws, front side locks and plug pieces, and the four front jaws are respectively arranged on the four corners of the front mold core, the four front side locks are respectively detachably fixed on the four sides of the front mold core, and the four plug pieces are arranged on the front mold core at intervals; there are four rear jaws, rear side locks and slot pieces, and the four rear jaws are respectively arranged on the four corners of the rear mold core, the four rear side locks are respectively detachably fixed on the four sides of the rear mold core, and the four slot pieces are arranged on the rear mold core at intervals.
3. The injection mold for a plastic product with micropores according to claim 2, characterized in that: The four sides of the front mold core are provided with mounting grooves for installing the front lock, and the four sides of the rear mold core are provided with mounting grooves for installing the rear lock; the front mold core is provided with a mounting hole for installing the plug component, and the rear mold core is provided with a mounting hole for installing the slot component.
4. The injection mold for a plastic product with micropores according to claim 1 or 2, characterized in that: The plug component is provided with a cylindrical plug protruding toward the rear mold core, and the slot component is provided with a cylindrical slot plugged with the cylindrical plug.
5. The injection mold for a plastic product with micropores according to claim 1, characterized in that: The first molding areas and the second molding areas are spaced apart in an arc shape, a flow channel connected to the first molding area and the second molding area is formed between the front mold core and the rear mold core, and a hot nozzle connected to the flow channel is installed on the first mold.
6. The injection mold for a plastic product with micropores according to claim 1, characterized in that: The first mold is provided with a guide sleeve; the second mold is provided with a guide column matched with the guide sleeve, and the guide column is inserted into the guide sleeve.
7. The injection mold for a plastic product with micropores according to claim 1, characterized in that: A plurality of balancing blocks are detachably fixed on a side of the first mold facing the second mold.
8. The injection mold for a microporous plastic product according to claim 1, 5, 6 or 7, characterized in that: The first mold includes a panel and a front mold plate which are connected in sequence; the second mold includes a bottom plate, a square iron and a rear mold plate which are connected in sequence.