CN107839165B - Injection mold - Google Patents
Injection mold Download PDFInfo
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- CN107839165B CN107839165B CN201711381322.5A CN201711381322A CN107839165B CN 107839165 B CN107839165 B CN 107839165B CN 201711381322 A CN201711381322 A CN 201711381322A CN 107839165 B CN107839165 B CN 107839165B
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- Prior art keywords
- hot runner
- runner system
- injection
- cavity
- injection molding
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- 238000002347 injection Methods 0.000 title claims abstract description 84
- 239000007924 injection Substances 0.000 title claims abstract description 84
- 238000001746 injection moulding Methods 0.000 claims abstract description 84
- 239000003292 glue Substances 0.000 claims abstract description 38
- 239000004033 plastic Substances 0.000 claims abstract description 29
- 229920003023 plastic Polymers 0.000 claims abstract description 29
- 239000011265 semifinished product Substances 0.000 claims abstract description 10
- 230000003014 reinforcing effect Effects 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 8
- 230000002787 reinforcement Effects 0.000 claims 4
- 239000000047 product Substances 0.000 abstract description 11
- 239000002994 raw material Substances 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000002699 waste material Substances 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 238000005406 washing Methods 0.000 abstract description 2
- 239000003086 colorant Substances 0.000 description 9
- 238000001816 cooling Methods 0.000 description 7
- 239000011521 glass Substances 0.000 description 7
- XECAHXYUAAWDEL-UHFFFAOYSA-N acrylonitrile butadiene styrene Chemical compound C=CC=C.C=CC#N.C=CC1=CC=CC=C1 XECAHXYUAAWDEL-UHFFFAOYSA-N 0.000 description 5
- 229920000122 acrylonitrile butadiene styrene Polymers 0.000 description 5
- 239000004676 acrylonitrile butadiene styrene Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000000465 moulding Methods 0.000 description 5
- 239000004973 liquid crystal related substance Substances 0.000 description 4
- 230000002349 favourable effect Effects 0.000 description 3
- 230000001795 light effect Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
- B29C45/27—Sprue channels ; Runner channels or runner nozzles
- B29C45/2725—Manifolds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/16—Making multilayered or multicoloured articles
- B29C45/1615—The materials being injected at different moulding stations
Abstract
The invention provides an injection mold which comprises a female mold component and a male mold component, wherein the female mold component is provided with a first cavity and a second cavity, the male mold component comprises a first male mold and a second male mold, a first hot runner system and a second hot runner system are arranged on the first male mold, a third hot runner system and a fourth hot runner system are arranged on the second male mold, the first male mold and the second male mold can be respectively paired with the first cavity and the second cavity one by one to complete secondary injection, and an avoidance area is formed in the position of a glue injection port of the secondary injection molding of a semi-finished injection molding part. According to the injection mold, the first male mold and the second male mold are matched to alternately complete secondary injection molding, so that a double-color effect can be formed, the difference of strength requirements of different areas of an injection molding part is considered, the damage caused by frequently disassembling and washing a hot runner system is avoided, the waste of raw materials and semi-finished products of plastic parts is avoided, and the product quality can be improved. And two injection molding parts can be formed after one-time alternate injection molding, so that the production efficiency is improved.
Description
Technical Field
The invention relates to the technical field of moulds.
Background
the shell is more and more diversified before the TV, and in order to reach better outward appearance effect, the shell often need use the highlight technique of moulding plastics before present TV, forms no weld mark, no flow mark, no streamline, no sink mark, the shell product of surperficial highlight, in addition, still need adopt two-color processing, sets up different colours in the different regions of same shell, changes single tone. However, the existing double-color treatment is usually to spray different colors on the molded shell to form double colors, and the mode has great pollution, is not beneficial to environmental protection and is gradually eliminated. In addition, the casing directly formed by one-time injection molding cannot give consideration to the difference of structural performance between the panel and the surrounding frame structure of the casing, so that the overall cost of the casing is higher.
Disclosure of Invention
the invention aims to provide an injection mold which can form a double-color injection molding part, is rapid in molding, saves raw materials and is less in pollution.
In order to achieve the purpose, the invention adopts the following technical scheme:
An injection mold comprises a female mold component and a male mold component, and is characterized in that the female mold component and/or the male mold component are movably and/or rotatably arranged, the female mold component is provided with a first cavity and a second cavity, the male mold component comprises a first male mold and a second male mold, wherein,
the first male die is provided with a first hot runner system and a second hot runner system, and the second male die is provided with a third hot runner system and a fourth hot runner system;
the first male die can be matched with the first cavity to form a semi-finished injection molding part through a first hot runner system, the second male die can be matched with the first cavity to perform secondary injection molding on the semi-finished injection molding part through a fourth hot runner system to form a finished injection molding part;
The second male die can be matched with the second cavity to form a semi-finished injection molding part through a third hot runner system, the first male die can be matched with the second cavity to perform secondary injection molding on the semi-finished injection molding part through the second hot runner system to form a finished injection molding part;
And forming an avoidance area at the position of the glue injection port of the secondary injection molding of the semi-finished product of the injection molding part.
Optionally, the die assembly comprises:
The first female die is provided with a first cavity;
The second female die is provided with a second cavity; and
the first female die and the second female die are respectively fixed at two ends of the rotary template;
the first male die and the second male die are respectively positioned at two ends of the female die component and can be close to or far away from the female die component.
Optionally, the semi-finished product of the injection molding part is of an enclosing frame structure, and the panel is formed at one end of the enclosing frame structure through secondary injection molding.
optionally, the height of the first glue injection opening in the mold opening direction is greater than the height of the second glue injection opening, the second glue injection opening is located in the area surrounded by the surrounding frame structure, the height of the third glue injection opening in the mold opening direction is greater than the height of the fourth glue injection opening, and the fourth glue injection opening is located in the area surrounded by the surrounding frame structure.
Optionally, the end face of the surrounding frame structure is inwards protruded in the surrounding area to form a first reinforcing part, and the first reinforcing part is located outside the avoiding area.
Optionally, the first reinforcing part is provided with a second reinforcing part protruding towards the enclosing region, and one end of the second reinforcing part far away from the panel is provided with a fixing column protruding.
optionally, the panel is enclosed by the bar shaped plate and is established and form, and the bar shaped plate sets up along enclosing the frame, and the bar shaped plate covers first rib and second rib.
Optionally, the colors of plastics in the first hot runner system and the third hot runner system are the same, the colors of plastics in the second hot runner system and the fourth hot runner system are the same, and the colors of plastics in the first hot runner system and the second hot runner system are different.
Optionally, the materials of the plastics in the first hot runner system and the third hot runner system are the same, the materials of the plastics in the second hot runner system and the fourth hot runner system are the same, and the materials of the plastics in the first hot runner system and the second hot runner system are different.
Optionally, the injection mold is a flip-chip mold using steam heating.
Has the advantages that: the invention provides an injection mold which comprises a female mold component and a male mold component, wherein the female mold component and/or the male mold component can be movably and/or rotatably arranged, the female mold component is provided with a first cavity and a second cavity, and the male mold component comprises a first male mold and a second male mold, wherein a first hot runner system and a second hot runner system are arranged on the first male mold, and a third hot runner system and a fourth hot runner system are arranged on the second male mold; the first male die can be matched with the first cavity to form a semi-finished injection molding part through a first hot runner system, the second male die can be matched with the first cavity to perform secondary injection molding on the semi-finished injection molding part through a fourth hot runner system to form a finished injection molding part; the second male die can be matched with the second cavity to form a semi-finished injection molding part through a third hot runner system, the first male die can be matched with the second cavity to perform secondary injection molding on the semi-finished injection molding part through the second hot runner system to form a finished injection molding part; and forming an avoidance area at the position of the glue injection port of the secondary injection molding of the semi-finished product of the injection molding part. The injection mold disclosed by the invention utilizes the hot runner system for injection molding, can be quickly molded and saves raw materials. The injection mold can carry out secondary injection molding by utilizing the matching of the male mold component and the female mold component to form double-color injection molding, reduce the environmental pollution, also can take into account the difference of the structural strength of different areas of an injection molding part, and utilize the plastic secondary injection molding of different materials to reduce the cost. The injection mold forms a semi-finished injection molding part and a finished injection molding part through the matching of the first male mold and the second male mold, the efficiency can be improved, and the injection mold can form two products after once alternate injection molding by arranging two sets of hot runner systems on the first male mold and the second male mold, so that the production efficiency is improved. Through the mode of moulding plastics in turn, need not wash injection mold, reduced the mould fault rate, reduce the waste of plastics and the waste of injection molding semi-manufactured goods, can also improve the quality of product.
drawings
Fig. 1 is a schematic structural view of an injection product (housing) of an injection mold according to the present invention.
Fig. 2 is a schematic structural diagram of a semi-finished product (surrounding frame structure) of an injection molding part of the injection mold provided by the invention.
Fig. 3 is a partially enlarged view of fig. 2 at a.
fig. 4 is a schematic structural diagram of a structure (panel) to be formed by secondary injection of the injection mold provided by the invention.
FIG. 5 is a schematic structural diagram of an injection mold provided by the present invention.
FIG. 6 is a schematic structural diagram of the injection mold provided by the invention on the side of the first male mold.
FIG. 7 is a schematic structural diagram of the injection mold provided by the invention on the side of the second male mold.
wherein the content of the first and second substances,
1-a female die component, 11-a first female die, 111-a first cavity, 12-a second female die, 121-a second cavity, 13-a rotating template, 21-a first male die, 22-a second male die, 23-a first hot runner system, 231-a first glue injection port, 24-a second hot runner system, 241-a second glue injection port, 25-a third hot runner system, 251-a third glue injection port, 26-a fourth hot runner system, 261-a fourth glue injection port, 27-a thimble, 3-a finished injection molding part, 31-a semi-finished injection molding part, 311-a first reinforcing part, 312-a second reinforcing part, 313-an avoiding region, 314-a fixing column and 32-a panel.
Detailed Description
In order to make the technical problems solved, the technical solutions adopted and the technical effects achieved by the present invention clearer, the technical solutions of the present invention are further described below by way of specific embodiments with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
the embodiment of the invention provides an injection mold which can be used for injection molding of various panels or shells of front shells of electronic displays, baffles, face shells of mobile equipment, automobile panels and the like, and particularly has high requirements on appearance, such as a shell needing high light effect. In this embodiment, the product to be injection molded (i.e., the finished injection molded part 3) is a front housing of a flat tv as shown in fig. 1. As shown in fig. 2 and 4, the front case of the flat tv includes a frame structure 31 and a panel 32. The enclosure frame structure 31 is fixed to a rear case or a center frame of a flat panel display, and the panel 32 is located on and covers an outer end surface of the enclosure frame structure 31 and is integrally formed with the enclosure frame structure 31. The panel 32 is also formed by enclosing the frame of enclosing frame structure 31 by a strip-shaped plate, and the panel 32 is used for shielding the edge of the liquid crystal glass, and abuts against the edge of the liquid crystal glass, so that the liquid crystal glass is limited, and is matched with other parts to jointly fix the liquid crystal glass. The following is an example of a frame structure comprising a frame structure 31 and a panel 32.
As shown in fig. 5, the injection mold provided in this embodiment includes a female mold assembly 1 and a male mold assembly, the female mold assembly 1 includes a first female mold 11, a second female mold 12 and a rotatable rotary mold plate 13, the first female mold 11 is provided with a first cavity 111, the second female mold 12 is provided with a second cavity 121, the first female mold 11 and the second female mold 12 are respectively fixed at two ends of the rotary mold plate 13, and when the rotary mold plate 13 rotates to different angles in the direction shown in the drawing, the first female mold 11 and the second female mold 12 can respectively rotate to different positions. The die assembly 1 utilizes the first die 11 and the second die 12 to form the corresponding first cavity 111 and the second cavity 121, and when injection molded parts in different shapes are needed, the first die 11 and the second die 12 can be directly replaced, so that the replacement is convenient. Utilize rotatable rotatory template 13, be favorable to moulding plastics and switch fast between twice, improve production efficiency.
As shown in fig. 5 and 6, the first punch 21 is located at one end of the die assembly 1 and can be moved toward or away from the die assembly 1 by other guiding and driving mechanisms to clamp or unclamp the die assembly 1. The first male die 21 is provided with a first hot runner system 23 and a second hot runner system 24, the end of the first hot runner system 23 is a first glue injection port 231, and the end of the second hot runner system 24 is a second glue injection port 241. The first male die 21 can be matched with the first cavity 111 to form a semi-finished injection-molded part 31 (such as a surrounding frame structure 31) through injection molding by the first hot runner system 23, and the first male die 21 can also be matched with the second cavity 121 to perform secondary injection molding on the semi-finished injection-molded part 31 through the second hot runner system 24 to form a finished injection-molded part 3 (such as a front shell). For the injection molding machine with the hot runner system, the glue ejected by the injection nozzle of the injection molding machine directly reaches each glue ejection opening through the hot runner and the hot runner flow distribution plate, each glue ejection opening is separately provided with a heating system and an ejection stopping mechanism, and the glue ejection opening directly ejects injection molding raw materials into the cavity. The injection molding machine of the hot runner system does not need to be provided with a cold runner, can greatly reduce the waste of injection molding raw materials, and has short molding time.
As shown in fig. 5 and 7, the second punch 22 is located at the other end of the die assembly 1 and can be moved towards or away from the die assembly 1 by other guiding and driving means to clamp or unclamp the die assembly 1. The second male die 22 is provided with a third hot runner system 25 and a fourth hot runner system 26, the end of the third hot runner system 25 is a third glue injection port 251, and the end of the fourth hot runner system 26 is a fourth glue injection port 261. The second punch 22 can cooperate with the first cavity 111 to overmold the injection molded article blank 31 via the fourth hot runner system 26 to form the injection molded article blank 3 (e.g., front shell), and the second punch 22 can also cooperate with the second cavity 121 to form the injection molded article blank 31 (e.g., surrounding frame structure 31) via the third hot runner system 25. It should be noted that the injection molding semi-finished product 31 forms an avoiding area 313 at the position of the glue injection port of the secondary injection molding, and the glue injection port can be injected through the avoiding area 313 during the secondary injection molding, so that the glue injection port is prevented from being blocked. The first hot runner system 23 of the first punch 21 and the third hot runner system 25 of the second punch 22 may be identical in construction, and the second hot runner system 24 of the first punch 21 and the fourth hot runner system 26 of the second punch may be identical.
The injection mold in this embodiment may have two modes of operation.
In a first working mode, one injection molding piece is formed by one-time alternate injection molding, and the specific working process is as follows: as shown in fig. 5, after the preliminary preparation work such as checking the cooling system is completed, the first male mold 21 and the first cavity 111 are controlled to be closed, the first glue injection port 231 is used to inject the sol inwards, the pressure maintaining and cooling are performed to form the injection molded article semi-finished product 31 (i.e., the enclosing frame structure), the first male mold 21 and the first cavity 111 are controlled to be opened, and the enclosing frame structure is still in the first cavity 111 when the mold is opened (in fig. 5, the enclosing frame structure is shown outside the first cavity 111 in order to show the enclosing frame structure).
The rotating die plate 13 is controlled to rotate the first cavity 111 with the frame structure to be opposite to the second male die 22.
and (3) controlling the second male die 22 and the first cavity 111 to be matched, performing secondary injection molding on the basis of the enclosing frame structure by utilizing the fourth injection port 261, and performing pressure maintaining and cooling to form a finished injection molded part product 3. And (3) controlling the second male die 22 and the first cavity 111 to be opened, and separating the finished injection molding part 3 from the first cavity 111.
Under the second working mode, two injection-molded parts can be formed by one-time alternate injection molding, and the specific working process is as follows: after the preliminary preparation work such as checking a cooling system is finished, the first male die 21 and the first cavity 111 are controlled to be matched, the second male die 22 and the second cavity 121 are controlled to be matched, the first glue injection port 231 is used for injecting the sol into the first cavity 111, the third glue injection port 251 is used for injecting the sol into the second cavity 121, after pressure maintaining and cooling, the injection molding semi-finished product 31 (namely, the frame enclosing structure) is formed in the first cavity 111 and the second cavity 121 respectively, the first male die 21 and the first cavity 111 are controlled to be opened, the second male die 22 and the second cavity 121 are controlled to be opened, and the frame enclosing structure is still in the first cavity 111 and the second cavity 121 respectively during opening.
The rotating die plate 13 is controlled to rotate, the first cavity 111 with the enclosing frame structure is rotated to be opposite to the second male die 22, and the second cavity 121 with the enclosing frame structure is rotated to be opposite to the first male die 21.
Controlling the second male die 22 and the first cavity 111 to be matched, matching the first male die 21 and the second cavity 121, performing secondary injection molding on the basis of the enclosing frame structure in the first cavity 111 by utilizing the fourth injection port 261, and performing pressure maintaining and cooling to form a finished injection molded part 3; and performing secondary injection molding on the basis of the surrounding frame structure in the second cavity 121 by using the second injection opening 241, and maintaining pressure and cooling to form the injection molding part finished product 3. And (3) controlling the second male die 22 and the first cavity 111 to be opened, and controlling the first male die 21 and the second cavity 121 to be opened, and respectively demoulding the two injection molding finished products 3.
In the above process, if the colors of the plastics in the two hot runner systems which are alternately injected are different, the enclosure frame structure and the panel with different colors can be formed, and finally the double-color housing is formed, namely, the double-color injection molding finished product 3 is produced. In addition, different plastics can be used in the two hot runner systems which are alternately injected according to the structural strength requirements of the finished injection part 3 in different areas. For example, for the high strength requirement of the enclosure structure, an enhanced ABS (acrylonitrile butadiene Styrene) containing 10% glass fiber may be used to form the enclosure structure, so as to enhance the structural strength of the enclosure structure, and during the secondary injection molding, a high-gloss ABS, an ABS added with MF (mineral aggregate) or an ABS added with metal powder may be used to obtain a better external light effect.
Because the structure of hot runner system mould is more complicated, if when using, change the colour of raw materials in the terrace die, need extravagant a large amount of raw materials to wash remaining raw materials, avoid the colour to mix, lead to the cost very high. Therefore, when in use, the color of the raw material in the same hot runner system is not suitable to be changed frequently. In this embodiment, by using the alternative injection molding manner of the first male mold 21 and the second male mold 22, only the two hot runner systems that are alternately injected with plastic need to use plastic of different colors, respectively, so as to form two-color injection molding, and the hot runner systems do not need to be cleaned, thereby avoiding waste of raw materials and semi-finished plastic parts, avoiding damage caused by frequent disassembly and washing of the hot runner systems, and further improving product quality. In addition, two sets of hot runner systems are respectively arranged on the first male die 21 and the second male die 22, and through the cooperation with the female die assembly 1, two injection molded parts (namely, the second working mode mentioned above) can be formed in one-time alternate injection molding, so that the production efficiency is improved.
Specifically, the color of the plastic in the first hot runner system 23 and the third hot runner system 25 is the same, the color of the plastic in the second hot runner system 24 and the fourth hot runner system 26 is the same, and the color of the plastic in the first hot runner system 23 and the second hot runner system 24 is different to form a two-shot molded part in the alternate injection molding.
The materials of the plastics in the first hot runner system 23 and the third hot runner system 25 are the same, the materials of the plastics in the second hot runner system 24 and the fourth hot runner system 26 are the same, and the materials of the plastics in the first hot runner system 23 and the second hot runner system 24 are different, so that the material strength of different parts of an injection molding part can be considered, and the cost is reduced.
Injection mold in this embodiment can use steam heating's flip-chip mould, and steam heating utilizes high-pressure steam heating, and this kind of heating methods can improve the programming rate, also is favorable to keeping temperature stable, and flip-chip mould and steam heating are favorable to improving the outward appearance effect of injection molding.
In addition, in addition to the above structure, the die assembly 1 may be only one die, and the first cavity 111 and the second cavity 121 may be respectively disposed at both ends of the die. Or the first cavity 111 and the second cavity 121 are arranged side by side on the same side of the female die, and the first male die 21 and the second male die 22 are correspondingly arranged on the same side of the female die and respectively correspond to the first cavity 111 and the second cavity 121. The first cavity 111 and the second cavity 121 can be arranged on the female die assembly 1, and the first male die 21 and the second male die 22 are matched. In addition, the female die assembly 1 can also be set to be fixed, and the male die assembly can be set to be rotatable, or the female die assembly 1 can be set to be movable, as long as the male die assembly and the female die assembly 1 can be matched for opening and closing the die, and the first male die 21 and the second male die 22 can be respectively corresponding to the first cavity 111 and the second cavity 121.
To the frame structure that encloses of production of this embodiment, the height that the mouth 241 was penetrated to the second along the mould opening direction is penetrated to first penetrating jiao kou 231, the second is penetrated jiao kou 241 and is located and encloses the frame structure and enclose the region of establishing, the third is penetrated jiao kou 251 and is greater than the height that the mouth 261 was penetrated to the fourth along the height of mould opening direction, the fourth is penetrated jiao kou 261 and is located and encloses the region that the frame structure encloses, above-mentioned setting can make first terrace die 21 and second terrace die 22 accomplish first injection molding or secondary injection molding with corresponding die cavity cooperation respectively, the mouth of penetrating of avoiding secondary injection molding is sheltered from.
As shown in fig. 2 and 3, in the present embodiment, in order to enhance the connection strength between the surrounding frame structure and the face plate 32, the end surface of the surrounding frame structure is formed with the first reinforcing portion 311 protruding into the surrounding region, and since the face plate 32 covers the end surface of the surrounding frame structure, the first reinforcing portion 311 increases the contact area between the surrounding frame structure and the face plate 32, thereby increasing the connection strength between the surrounding frame structure and the face plate 32. A plurality of first reinforcing parts 311 can be arranged at intervals along the frame of the enclosing frame structure, but it should be noted that the first reinforcing parts 311 need to be arranged outside the avoiding region 313 to avoid blocking the injection molding port.
in order to facilitate connection with a rear shell and other structures, a second reinforcing portion 312 is formed by partially protruding the first reinforcing portion 311 into the surrounding area, and a fixing post 314 is formed by protruding an end of the second reinforcing portion 312 away from the panel 32. The fixing posts 314 may be provided with screw holes to be connected with a rear case or the like by bolts. The strip-shaped plate of the panel 32 covers the first reinforcing part 311 and the second reinforcing part 312, and the width of the strip-shaped plate can be adjusted according to the area required to be covered by the glass panel, so that the glass panel can be matched with different glass panels for use.
The above description is only a preferred embodiment of the present invention, and for those skilled in the art, the present invention should not be limited by the description of the present invention, which should be interpreted as a limitation.
Claims (8)
1. An injection mould comprising a female mould assembly (1) and a male mould assembly, characterized in that the female mould assembly (1) and/or the male mould assembly are movably and/or rotatably arranged, the female mould assembly (1) is provided with a first cavity (111) and a second cavity (121), the male mould assembly comprises a first male mould (21) and a second male mould (22), wherein,
A first hot runner system (23) and a second hot runner system (24) are arranged on the first male die (21), and a third hot runner system (25) and a fourth hot runner system (26) are arranged on the second male die (22);
The first male die (21) can be matched with the first cavity (111) to form a semi-finished injection-molded part (31) through the first hot runner system (23), the second male die (22) can be matched with the first cavity (111), and the semi-finished injection-molded part (31) is subjected to secondary injection molding through the fourth hot runner system (26) to form a finished injection-molded part (3);
the second male die (22) can be matched with the second cavity (121), a semi-finished injection molding part (31) is formed through the third hot runner system (25), the first male die (21) can be matched with the second cavity (121), and the semi-finished injection molding part (31) is subjected to secondary injection molding through the second hot runner system (24) to form a finished injection molding part (3);
an avoidance area (313) is formed at the position of a glue injection opening of the secondary injection molding of the semi-finished product (31) of the injection molding part; the injection molding semi-finished product (31) is of an enclosing frame structure, and a panel (32) is formed at one end of the enclosing frame structure through secondary injection molding;
The tail end of the first hot runner system (23) is a first glue injection port (231), the tail end of the second hot runner system (24) is a second glue injection port (241), the tail end of the third hot runner system (25) is a third glue injection port (251), the tail end of the fourth hot runner system (26) is a fourth glue injection port (261), the height of the first glue injection port (231) in the mold opening direction is larger than that of the second glue injection port (241), the second glue injection port (241) is located in an area surrounded by the surrounding frame structure, the height of the third glue injection port (251) in the mold opening direction is larger than that of the fourth glue injection port (261), and the fourth glue injection port (261) is located in the area surrounded by the surrounding frame structure.
2. An injection mould according to claim 1, characterized in that said female die assembly (1) comprises:
A first female die (11) provided with the first cavity (111);
a second female die (12) provided with the second cavity (121); and
The first female die (11) and the second female die (12) are respectively fixed at two ends of the rotary template (13);
The first male die (21) and the second male die (22) are respectively positioned at two ends of the female die component (1) and can be close to or far away from the female die component (1).
3. an injection mould according to claim 1, characterized in that the end face of the surrounding frame structure is provided with a first reinforcement part (311) protruding towards the surrounding area, and the first reinforcement part (311) is positioned outside the avoiding area (313).
4. An injection mold according to claim 3, wherein the first reinforcing portion (311) is provided with a second reinforcing portion (312) protruding towards the surrounding area, and one end of the second reinforcing portion (312) far away from the panel (32) is provided with a fixing post (314) protruding.
5. An injection mould according to claim 4, characterized in that the panel (32) is enclosed by a strip arranged along the enclosure, which strip covers the first reinforcement (311) and the second reinforcement (312).
6. An injection mold as claimed in any one of claims 1 to 5, wherein the color of the plastic in the first hot runner system (23) and the third hot runner system (25) is the same, the color of the plastic in the second hot runner system (24) and the fourth hot runner system (26) is the same, and the color of the plastic in the first hot runner system (23) and the second hot runner system (24) is different.
7. An injection mold according to claim 6, wherein the plastic in the first hot runner system (23) and the third hot runner system (25) is the same material, the plastic in the second hot runner system (24) and the fourth hot runner system (26) is the same material, and the plastic in the first hot runner system (23) and the second hot runner system (24) is different material.
8. An injection mould according to any one of claims 1 to 5, wherein the injection mould is a flip-chip mould using steam heating.
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| CN110576566A (en) * | 2018-06-15 | 2019-12-17 | 蓝思科技（长沙）有限公司 | Injection molding mold and method thereof, injection molding blank and injection molding product |
| CN114589876A (en) * | 2022-02-25 | 2022-06-07 | 歌尔股份有限公司 | Thermoplastic body injection mold and injection molding method |
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