CN216465857U - Four cave smart mobile phone center injection mold of a mould - Google Patents
Four cave smart mobile phone center injection mold of a mould Download PDFInfo
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- CN216465857U CN216465857U CN202121926294.2U CN202121926294U CN216465857U CN 216465857 U CN216465857 U CN 216465857U CN 202121926294 U CN202121926294 U CN 202121926294U CN 216465857 U CN216465857 U CN 216465857U
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Abstract
The utility model discloses a one-mold four-cavity smart phone middle frame injection mold which comprises a fixed mold core and a movable mold core with four cavities, and further comprises a four-point needle valve type hot runner system, an ejector plate and supporting square iron, wherein the fixed mold core and the movable mold core both adopt an integral mold core structure, and four hot nozzles of the four-point needle valve type hot runner system correspond to glue inlets of the four cavities. The four-point needle valve type hot runner system is provided with a time sequence control device for controlling the opening and closing of the four hot nozzle valve needles. The time sequence control device can independently control the opening and closing time of each hot nozzle valve needle. The novel multi-cavity die has the advantages of high production efficiency and low production cost of single products, and can avoid the defects of unbalanced flow of each cavity of the multi-cavity die, difficult debugging of molding process parameters, too large overall dimension of the die, low strength of the die plate and the like, and can meet the requirements of short life cycle, large production quantity, high quality requirement and low cost of mobile phone shell products.
Description
Technical Field
The utility model relates to an injection mold technology, in particular to a one-mold four-hole smart phone middle frame injection mold.
Background
The middle frame of the mobile phone is one of the main parts of the mobile phone, the requirements on the size and the position precision are high, the number of metal materials adopted in the past is large, with the development and application of the 5G technology, the requirements of the smart phone on signals are gradually improved, the application of non-metal materials represented by plastic and glass materials is also gradually increased, and the new processing technology of the plastic materials is endless.
The rapid rise of mobile interconnection leads to the vigorous development of intelligent terminal equipment, and the terminal equipment represented by the intelligent mobile phone is continuously innovated, so that the continuous high increase of the shipment rate of the intelligent terminal equipment is brought about. Therefore, how to improve the processing quality and the production efficiency of the smart phone becomes a practical problem in the smart phone part injection mold industry.
The cell-phone center is smart mobile phone shell class structure part, sets up between cell-phone screen and back lid for parts such as inside battery of fixed cell-phone, mainboard, camera, winding displacement, microphone adopt the plastic material to produce the cell-phone center, generally be a mould cave mould, and a mould many caves realize that this product has a lot of difficult problems to be solved.
Although the multi-cavity die with one die has the advantages of one-step molding of a plurality of products, higher production efficiency, lower production cost of a single product and the like, the multi-cavity die also has the defects of complex die structure, difficult flow balance of a plurality of cavities, lower strength of the die plate caused by larger overall dimension of the die, easy deformation of the die plate and the like. In general, an injection mold for a mobile phone shell product generally does not adopt a multi-cavity mold in order to ensure the appearance and precision of a plastic part and reduce the difficulty in adjusting process parameters.
In the prior art, a common four-cavity mold has four cavities for molding a product in one set of mold, and the schematic structural diagram of the mold is shown in fig. 1a and 1 b. A conventional four-cavity mold generally comprises:
and the fixed die fixing plate 1 and the movable die fixing plate 2 are respectively used for fixing the die on the fixed die side and the movable die side of the injection molding machine.
The fixed die plate 11 and the fixed die core 12 fixed in the fixed die plate 11, the fixed die core 12 has 4 pieces in total, and is a fixed die side part forming a die cavity. The die comprises a movable die plate 21 and a movable die core 22 fixed in the movable die plate 21, wherein the movable die core 22 comprises 4 parts in total and is a movable die side part forming a die cavity. The cavity block 12 and the corresponding cavity block 22 together form a cavity of the injection molding product.
A left supporting square iron 31, a right supporting square iron 32, a thimble panel 33 and a thimble base plate 34. The thimble panel 33 and the thimble base plate 34 are used for fixing ejector components such as a push rod, and the left and right supporting square irons 31 and 32 are used for forming a moving space for ejecting the thimble panel 33 and the thimble base plate 34 upwards.
The common four-hole die can adopt a cold runner glue feeding mode and a hot runner glue feeding mode. Taking the cold material channel feeding manner as an example, as shown in fig. 1a and 1b, the flow channel 40 is a flow channel for molten plastic flowing from a nozzle of an injection molding machine to a cavity in a mold, and is formed by a plurality of channels processed on a sprue bush 41, a fixed mold plate 11 and a fixed mold core 12. The nozzle push plate 42 is used for pushing out the material handle of the runner part after the formed plastic part is cooled and solidified.
The method for molding the mobile phone shell parts by using the common multi-cavity mold in the prior art has the following defects:
flow balance adjustment of several cavities is difficult. No matter the common multi-cavity mold adopting a cold runner or hot runner glue feeding mode is adopted, all cavities and runners of the common multi-cavity mold cannot be processed completely and consistently, and the flow balance among all the cavities cannot be guaranteed. The size difference of parts molded by different cavities is large due to unbalanced flow, the precision of the molded parts is low, and the appearance defects are difficult to solve.
The molding process parameters of the mold are difficult to adjust. During molding debugging, the molding parameters cannot meet the requirements of all cavities, sometimes, in order to solve the problem that the process parameters are changed due to the molding defect of one cavity, other molding defects often occur in the other cavity, the molding process parameter debugging difficulty is extremely high, and the molded product often hardly meets the strict requirements of mobile phone shell products.
The increase of the cavities leads to the great increase of the overall dimension of the whole set of die, the strength of the die plate is reduced, the die plate is easy to deform, and the formed mobile phone shell parts are easy to have the defects of edge nourishing and the like. Larger mold geometries necessitate the use of larger tonnage injection molding machines, and the overall injection cost increases.
In view of the above, the present invention is particularly proposed.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a one-mold four-cavity smart phone middle frame injection mold to solve the technical problems in the prior art.
The purpose of the utility model is realized by the following technical scheme:
the utility model discloses a one-mold four-cavity smart phone middle frame injection mold, which comprises a fixed mold core and a movable mold core with four cavities, and further comprises a four-point needle valve type hot runner system, an ejector plate and supporting square iron, wherein the fixed mold core and the movable mold core both adopt an integral mold core structure, and four hot nozzles of the four-point needle valve type hot runner system correspond to glue inlets of the four cavities.
Compared with the prior art, the one-mold four-cavity smart phone middle frame injection mold provided by the utility model can utilize the advantages of high production efficiency and low production cost of a single product of the multi-cavity injection mold, and can avoid the defects of unbalanced flow of each cavity of the multi-cavity mold, difficult debugging of molding process parameters, too large overall dimension of the mold, low strength of the template and the like by adopting the integral fixed mold core and the four-point needle valve type hot runner, and can conveniently meet various requirements of short life cycle, large production quantity, high quality requirement, low cost requirement of mobile phone shell products.
Drawings
FIG. 1a and FIG. 1b are schematic diagrams of a four-cavity mold with a common structure in the prior art, showing a top view and a cross-sectional view respectively
Fig. 2a and 2b are schematic top view and cross-sectional structure diagrams of a one-mold four-cavity smartphone middle frame injection mold according to an embodiment of the present invention.
In fig. 1a and 1 b:
1. the casting mold comprises a fixed mold fixing plate, a movable mold fixing plate, a fixed mold core, a movable mold plate, a movable mold core, a left supporting square iron, a right supporting square iron, a thimble panel, a thimble bottom plate, a runner, a sprue bush and a sprue push plate, wherein the fixed mold fixing plate is 2;
in fig. 2a, 2 b:
51. the device comprises a fixed die fixing plate, a movable die fixing plate, a fixed die core, a movable die core, a supporting square iron, a thimble panel 72, a thimble bottom plate 73, a hot runner system 80, a timing control device 81 and a water gap push plate 82.
Detailed Description
The technical scheme in the embodiment of the utility model is clearly and completely described below by combining the attached drawings in the embodiment of the utility model; it is to be understood that the described embodiments are merely exemplary of the utility model, and are not intended to limit the utility model to the particular forms disclosed. All other embodiments, which can be derived by a person skilled in the art from the embodiments of the present invention without making any creative effort, shall fall within the protection scope of the present invention.
The terms that may be used herein are first described as follows:
the term "and/or" means that either or both can be achieved, for example, X and/or Y means that both cases include "X" or "Y" as well as three cases including "X and Y".
The terms "comprising," "including," "containing," "having," or other similar terms of meaning should be construed as non-exclusive inclusions. For example: including a feature (e.g., material, component, ingredient, carrier, formulation, material, dimension, part, component, mechanism, device, process, procedure, method, reaction condition, processing condition, parameter, algorithm, signal, data, product, or article of manufacture), is to be construed as including not only the particular feature explicitly listed but also other features not explicitly listed as such which are known in the art.
The term "consisting of … …" is meant to exclude any technical feature elements not explicitly listed. If used in a claim, the term shall render the claim closed except for the inclusion of the technical features that are expressly listed except for the conventional impurities associated therewith. If the term occurs in only one clause of the claims, it is defined only to the elements explicitly recited in that clause, and elements recited in other clauses are not excluded from the overall claims.
Unless expressly stated or limited otherwise, the terms "mounted," "connected," and "secured," etc., are to be construed broadly, as for example: can be fixedly connected, can also be detachably connected or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms herein can be understood by those of ordinary skill in the art as appropriate.
The terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in an orientation or positional relationship that is indicated based on the orientation or positional relationship shown in the drawings for ease of description and simplicity of description only, and are not intended to imply or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting herein.
Details which are not described in detail in the embodiments of the utility model belong to the prior art which is known to the person skilled in the art. Those not specifically mentioned in the examples of the present invention were carried out according to the conventional conditions in the art or conditions suggested by the manufacturer. The reagents or instruments used in the examples of the present invention are not specified by manufacturers, and are all conventional products available by commercial purchase.
The utility model discloses a one-mold four-cavity smart phone middle frame injection mold, which comprises a fixed mold core and a movable mold core with four cavities, and further comprises a four-point needle valve type hot runner system, an ejector plate and supporting square iron, wherein the fixed mold core and the movable mold core both adopt an integral mold core structure, and four hot nozzles of the four-point needle valve type hot runner system correspond to glue inlets of the four cavities.
The four-point needle valve type hot runner system is provided with a time sequence control device, and the time sequence control device is provided with four switch control units of hot nozzle needles.
The time sequence control device is provided with an independent switch control unit for each hot nozzle valve needle.
The ejector pin plate comprises an ejector pin panel and an ejector pin bottom plate, and adopts an I-shaped structure.
The supporting square iron is of an integral hollow structure, and the shape of the inner outline of the supporting square iron is matched with the shape of the I-shaped thimble panel and the I-shaped thimble bottom plate.
In summary, in the embodiment of the utility model, by adopting the integrated fixed and movable mold core, the integrated hollow supporting square iron, the i-shaped ejector pin plate structure and the glue feeding mode in which the four-point needle valve type hot runner matching time sequence control device independently controls the opening and closing of the hot nozzle needle, the novel multi-cavity mold which has the advantages of high production efficiency and low production cost of single products and can overcome the defects of unbalanced flow of each cavity, difficult debugging of forming process parameters, too large overall dimension of the mold, low strength of the mold plate and the like of the multi-cavity mold can meet various requirements of short life cycle, large production quantity, high quality requirement and low cost requirement of mobile phone shell products.
In order to more clearly show the technical solutions and the technical effects provided by the present invention, the following detailed description is provided for the embodiments of the present invention with specific embodiments.
Example 1
A four-hole smart phone middle frame injection mold is provided, wherein a molded product is a smart phone middle frame part and has four molded product cavities.
As shown in fig. 2a and 2b, the four-cavity smart phone middle frame injection mold of the present invention includes the following parts:
fixed mold fixing plate 51 and movable mold fixing plate 52: respectively used for fixing the mould on the fixed mould side and the movable mould side of the injection molding machine.
The core insert 61 and the core insert 62: the fixed die core 61 and the movable die core 62 are of an integral structure, and a multi-die core splicing mode of a common structure is not adopted any more. The cavity insert 61 and the core insert 62 are respectively provided with 4 cavities corresponding to the product shape, and they together form 4 cavities required by the injection molding product.
Supporting square iron 71, ejector pin panel 72, and ejector pin base plate 73: the ejector pin panel 72 and the ejector pin base plate 73 are used for fixing ejector parts such as ejector pins, and the supporting square iron 71 is used for supporting and forming a movable space for ejecting the ejector pin panel 72 and the ejector pin base plate 73 upwards. The shapes of the thimble panels 72 and the thimble bases 73 are in the shape of an i. The supporting square iron 71 is of an integral hollow structure, a left-right separated supporting square iron form of a common structure is not adopted, and the inner contour shape of the supporting square iron is matched with the I-shaped shape of the thimble panel 72 and the thimble base plate 73.
The utility model discloses a four-hole smart phone middle frame injection mold, which adopts an integral fixed and movable mold core, an integral hollow supporting square iron and an I-shaped ejector pin plate structure, and a glue feeding mode that a four-point needle valve type hot runner is matched with a time sequence control device to independently control the opening and closing of a hot nozzle valve needle, and has the following advantages that:
(1) the problem of flow balance among multiple cavities is thoroughly solved. The sequential control device can independently control the opening and closing time of each hot nozzle valve needle, the glue feeding amount of each cavity of the mold can be kept consistent after debugging, and various defects of injection products caused by unbalanced glue feeding are avoided.
(2) The difficulty in debugging the molding process parameters is greatly reduced. After the problem of flow balance of each cavity is solved, the problem that the quality of each cavity product cannot be considered is solved when the molding process parameters are debugged, and the debugging difficulty of the molding process parameters is greatly reduced.
(3) The mold has high strength and good product quality. The overall dimension of "worker" font thimble board is a lot of less than the thimble board size of ordinary structure mould, and it is corresponding littleer to support the cavity region that the square iron formed, and integral support square iron is bigger to the support area of movable mould benevolence, and the support scope is close the product edge, and the template is more difficult to warp, and the intensity of whole set of mould is higher, need not increase the template thickness in order to increase template intensity by a wide margin, and defects such as limit can not appear also in the product that the shaping goes out simultaneously.
(4) The product size precision is higher. The movable mould core and the fixed mould core adopt the integral mould core, the mode of splicing and embedding each cavity of a common structure is not adopted any more, and accumulated machining errors and positioning errors caused by splicing and embedding a plurality of mould cores can be avoided. Unified processing benchmark and less mold insert cooperation and mold insert location are favorable to satisfying the higher requirement of cell phone shell class product to mould size precision.
(5) The production cost is lower. Compared with the common multi-cavity die adopting the split-inlaid die core, the integral die core form has the advantages that the arrangement distance between products is smaller, the overall dimension of the whole die is correspondingly smaller, an injection molding machine with relatively smaller tonnage can be used, and the cost during injection molding production is correspondingly lower.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims. The information disclosed in this background section is only for enhancement of understanding of the general background of the utility model and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art already known to a person skilled in the art.
Claims (3)
1. The one-mold four-cavity smart phone middle frame injection mold is characterized by comprising a fixed mold core and a movable mold core with four cavities, and further comprising a four-point needle valve type hot runner system, an ejector plate and supporting square iron, wherein the fixed mold core and the movable mold core both adopt an integral mold core structure, and four hot nozzles of the four-point needle valve type hot runner system correspond to glue inlets of the four cavities;
the four-point needle valve type hot runner system is provided with a time sequence control device, and the time sequence control device is provided with a switch control unit of four hot nozzle needle valves;
the time sequence control device is provided with an independent switch control unit for each hot nozzle valve needle.
2. The one-mold four-cavity smart phone middle frame injection mold according to claim 1, wherein the ejector plate comprises an ejector pin panel and an ejector pin bottom plate, and the ejector pin plate is of an I-shaped structure.
3. The one-mold four-cavity smart phone middle frame injection mold according to claim 2, wherein the supporting square iron is of an integral hollow structure, and the shape of the inner contour of the supporting square iron is matched with the shape of an I-shaped shape of the ejector pin panel and the ejector pin base plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121926294.2U CN216465857U (en) | 2021-08-17 | 2021-08-17 | Four cave smart mobile phone center injection mold of a mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121926294.2U CN216465857U (en) | 2021-08-17 | 2021-08-17 | Four cave smart mobile phone center injection mold of a mould |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216465857U true CN216465857U (en) | 2022-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121926294.2U Active CN216465857U (en) | 2021-08-17 | 2021-08-17 | Four cave smart mobile phone center injection mold of a mould |
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|---|---|
| CN (1) | CN216465857U (en) |
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2021
- 2021-08-17 CN CN202121926294.2U patent/CN216465857U/en active Active
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