CN113320078B - Injection molding method on semi-finished product - Google Patents
Injection molding method on semi-finished product Download PDFInfo
- Publication number
- CN113320078B CN113320078B CN202010126218.7A CN202010126218A CN113320078B CN 113320078 B CN113320078 B CN 113320078B CN 202010126218 A CN202010126218 A CN 202010126218A CN 113320078 B CN113320078 B CN 113320078B
- Authority
- CN
- China
- Prior art keywords
- finished product
- semi
- die holder
- molding
- die
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000011265 semifinished product Substances 0.000 title claims abstract description 74
- 238000001746 injection moulding Methods 0.000 title claims abstract description 28
- 238000003825 pressing Methods 0.000 claims abstract description 36
- 239000012778 molding material Substances 0.000 claims abstract description 33
- 238000000465 moulding Methods 0.000 claims abstract description 26
- 239000000047 product Substances 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 7
- 239000004033 plastic Substances 0.000 claims description 7
- 229920003023 plastic Polymers 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000000741 silica gel Substances 0.000 description 4
- 229910002027 silica gel Inorganic materials 0.000 description 4
- 239000007788 liquid Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
Classifications
-
- 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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
-
- 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
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/14008—Inserting articles into the mould
-
- 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
-
- 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
-
- 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
- B29C45/40—Removing or ejecting moulded articles
- B29C45/4005—Ejector constructions; Ejector operating mechanisms
-
- 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
- B29C45/64—Mould opening, closing or clamping devices
Abstract
An injection molding method for semi-finished products comprises a semi-finished product placing step, a semi-finished product pre-pressing step and a molding step. Firstly, providing a pair of moulds with a forming space, placing a semi-finished product into the moulds, then placing a pressing jig into the pair of moulds, carrying out first mould closing, fixing the semi-finished product in the forming space through the pressing jig, tightly matching with the moulds, carrying out first mould opening, taking out the pressing jig, carrying out second mould closing, injecting a forming material into the forming space, and finally carrying out second mould opening to form a finished product. The semi-finished product prepressing step can prevent the molding material from generating flash or burr on the semi-finished product, so as to improve the yield of injection molding.
Description
Technical Field
The present invention relates to an injection molding method, and more particularly to an injection molding method for injection molding a semi-finished product, which can prevent flash or burr from occurring on the semi-finished product, thereby increasing the yield of the finished product.
Background
Injection molding is mainly to form a molding space in a pair of molds, so as to inject a molding material into the molding space and form a finished product after cooling. The existing molding materials mainly used for injection molding generally comprise plastics, metal-plastic composite powder, silica gel and the like.
The molding materials are formed by heating the molding materials to form a liquid, injecting the liquid molding materials into the mold through an injection machine under high pressure, and cooling the molding materials to form a solid. When the molding materials are in liquid state, the fluidity of each molding material is mainly that silica gel is larger than plastic and that of metal-plastic composite powder.
Particularly, silica gel has a good fluidity, and when silica gel is used as the molding material, the mold clamping force of the mold is insufficient, so that the phenomenon of glue overflow or burrs is easily generated at the mold clamping position of the mold after the finished product is molded. Therefore, after the injection molding, the finished product needs to be trimmed by a large amount of manpower or material resources, which not only reduces the yield of the injection molding, but also consumes a lot of manpower cost, so that the production cost is greatly increased.
Therefore, how to provide a method capable of greatly reducing the phenomenon of glue overflow or burrs in the injection molding process is the problem to be solved by the scheme.
Disclosure of Invention
The present invention is directed to an injection molding method, and more particularly to an injection molding method for injection molding a semi-finished product, which can prevent flash or burr from occurring on the semi-finished product, thereby improving the yield of the finished product.
To achieve the above object, the present invention provides an injection molding method for a semi-finished product, the injection molding method comprising a semi-finished product placing step, a semi-finished product pre-pressing step, and a molding step. The semi-finished product is placed into the step: firstly, a pair of dies is provided, the dies includes a first die holder and a second die holder, a forming space is formed between the first die holder and the second die holder, and a semi-finished product is placed into the dies. The semi-finished product prepressing step: and providing a pressing jig, placing the pressing jig between the first die holder and the second die holder, carrying out primary die assembly on the first die holder and the second die holder to generate a pre-die resultant force between the first die holder and the second die holder, and pressing the semi-finished product into the first die holder by using the pressing jig through the pre-die resultant force to form tight fit between the semi-finished product and the first die holder. The molding step comprises: firstly, carrying out first die opening to separate the first die holder from the second die holder, then taking out the press-fit jig, carrying out second die closing on the first die holder and the second die holder, injecting a molding material into the molding space to coat the semi-finished product with the molding material in the molding space, cooling and molding the molding material in the molding space to form a finished product, then carrying out second die opening, and taking out the finished product.
In one embodiment, the mold further includes a middle plate disposed between the first mold base and the second mold base, wherein the pressing fixture is disposed between the first mold base and the middle plate when the first mold assembly is performed.
In an embodiment, a carrying portion is further formed in the first mold base, and the semi-finished product is sleeved outside the carrying portion and forms the tight fit with the carrying portion.
In one embodiment, the carrier has a top surface and a sidewall annularly disposed on the top surface and connected to the first mold base, and the sidewall has at least one engaging protrusion protruding therefrom, and the engaging protrusion engages with the semi-finished product.
In one embodiment, the semi-finished product has a fitting space therein, so that the semi-finished product is loaded on the loading portion through the fitting space, and the wall portions of the fitting space are respectively attached to the top surface and the side wall of the loading portion to form the tight fit.
In one embodiment, a fitting groove for fitting with the fitting bump is formed in the fitting space at a position corresponding to the fitting bump.
In an embodiment, the second mold base is further provided with a pressing portion, and the pressing portion is pressed on an outer surface of the semi-finished product.
In one embodiment, the first mold base is further provided with at least one ejection mechanism inside the carrier, and the ejection mechanism is used for ejecting the finished product from the first mold base through the ejection mechanism.
In an embodiment, the second mold base further has at least one runner for flowing the molding material, and the runner is communicated with the molding space, so that the molding material enters the molding space through the runner.
In one embodiment, the semi-finished product is made of a plastic material, and the molding material is a silicone material.
Drawings
FIG. 1 is a schematic flow chart of the steps of the present invention.
FIG. 2 is a schematic cross-sectional view of a semi-finished product of the present invention placed in a mold.
FIG. 3 is a schematic cross-sectional view of a pressing fixture of the present invention being placed in a mold.
Fig. 4 is a schematic cross-sectional view of the present invention after the first mold clamping.
Fig. 5 is a schematic cross-sectional view after the first mold opening of the present invention.
FIG. 6 is a schematic cross-sectional view of the present invention after the second mold clamping.
Fig. 7 is a schematic cross-sectional view of the finished product of the present invention.
FIG. 8 is a schematic cross-sectional view of the plate of the present invention being placed in a mold.
FIG. 9 is a cross-sectional view of the mold with the mold clamped in position with the mold platen of the present invention.
Description of the symbols:
s1 semi-finished product placing step
S2 semi-finished product prepressing step
S3 Molding step
10 mould
11 first die holder
111 bearing part
112 ejection mechanism
113 top surface
114 side wall
115 fitting projection
12 second die holder
121 press part
122 flow passage
13 forming space
14 middle plate
20 semi-finished product
21 set of setting space
22 fitting groove
23 outer surface of
30 Molding material
40 pressing jig
41 pressing space
50 the product
Detailed Description
The detailed description and technical contents of the present invention will now be described with reference to the drawings as follows:
referring to fig. 1, the present invention provides a method for injection molding a semi-finished product, including a semi-finished product placing step S1, a semi-finished product pre-pressing step S2, and a molding step S3.
The step S1 of placing the semi-finished product is to provide a pair of molds 10 for being erected on an injection machine (not described herein) as shown in fig. 2, in which the pair of molds 10 includes a first mold base 11 and a second mold base 12, the first mold base 11 has a supporting portion 111 and an ejecting mechanism 112 therein, the supporting portion 111 is used for supporting a semi-finished product 20, the supporting portion 111 has a top surface 113 and a sidewall 114 annularly disposed on the top surface 113 and interconnected with the first mold base 11, the sidewall 114 is provided with at least one engaging protrusion 115 thereon, and the ejecting mechanism 112 is disposed in the supporting portion 111. The second mold base 12 has a pressing portion 121 therein, and a molding space 13 is formed inside the first mold base 11 and the second mold base 12 after the first mold base and the second mold base are mutually molded, and the second mold base 12 has a runner 122 for a molding material 30 to flow through.
In the present embodiment, the semi-finished product 20 is made of a plastic material, and the molding material 30 is silicone. The semi-finished product 20 is disposed on the carrying portion 111 of the first mold base 11 by a robot (known in the art, not described herein), it should be noted that a set space 21 is formed on the semi-finished product 20, so that the semi-finished product 20 can be sleeved on the carrying portion 111, an engaging groove 22 engaged with the engaging protrusion 115 is formed at a position corresponding to the engaging protrusion 115 in the set space 21, and an outer surface 23 is formed outside the semi-finished product 20. When the semi-finished product 20 is sleeved on the carrying portion 111 by the robot arm, since the engaging protrusion 115 on the carrying portion 111 is protruded outside the sidewall 114, the semi-finished product 20 cannot be completely sleeved on the outside of the carrying portion 111, but is limited by the engaging protrusion 115 to be sleeved only on the front edge of the carrying portion 111.
In the step S2 of pre-pressing the semi-finished product, a pressing fixture 40 is provided, the pressing fixture 40 is disposed between the first mold base 11 and the second mold base 12, and a pressing space 41 having the same shape as the semi-finished product 20 is provided in the pressing fixture 40, as shown in fig. 3. After the pressing fixture 40 is disposed inside the first mold base 11 and the second mold base 12, the first mold base 11 and the second mold base 12 are first closed to make the pressing space 41 sleeved outside the semi-finished product 20 by a pre-mold resultant force generated by the first mold base 11 and the second mold base 12, and then the pressing fixture 40 drives the semi-finished product 20 to move toward the bottom of the first mold base 11 to make the engaging groove 22 and the engaging protrusion 115 generate an engaging effect, so that the semi-finished product 20 can be completely sleeved on the bearing portion 111 and generate a tight-fitting effect with the bearing portion 111, as shown in fig. 4.
In the molding step S3, a first mold opening is performed to separate the first mold base 11 and the second mold base 12 from each other, as shown in fig. 5, the pressing fixture 40 is taken out, then the first mold base 11 and the second mold base 12 are closed for a second time, and the molding material 30 is injected into the molding space 13 through the runner 122 to cover the molding material 30 outside the semi-finished product 20, as shown in fig. 6. It should be noted that, in this embodiment, when performing the second mold closing, the pressing portion 121 on the second mold base 12 will press against the outer surface 23 of the semi-finished product 20, so that the semi-finished product 20 is clamped between the pressing portion 121 and the bearing portion 111, and because the semi-finished product 20 and the bearing portion 111 are in a tight fit state, after the molding material 30 is injected into the molding space 13, the molding material 30 can be effectively prevented from overflowing between the semi-finished product 20 and the bearing portion 111, after the molding material 30 is cooled and molded in the molding space 13, a finished product 50 formed by covering the semi-finished product 20 with the molding material 30 is formed in the molding space 13, and then performing the second mold opening to separate the first mold base 11 and the second mold base 12 from each other, it should be noted that, after the first mold base 11 is separated from the second mold base 12, the molding material 30 remaining in the flow channel 122 and the finished product 50 in the molding space 13 can be cut off first (these techniques are well known in the art of general injection molding and are not described herein), so that the finished product 50 is reserved on the first mold base 11, and then the ejection mechanism 112 is used to eject the semi-finished product 20 out of the supporting portion 111, so that the engaging recess 22 is disengaged from the engaging protrusion 115, and the finished product 50 can be taken out from the first mold base 11, where the finished product 50 is shown in fig. 7.
Therefore, since the semi-finished product 20 and the carrying portion 111 are tightly fitted, the inner wall surface of the set space 21 of the semi-finished product 20 is fitted to the top surface 113 and the side surface 114 of the carrying portion 111, and the semi-finished product 20 is clamped by the carrying portion 111 and the pressing portion 121, so as to more effectively prevent the molding material 30 from flowing between the semi-finished product 20 and the carrying portion 111.
Finally, as shown in fig. 8 and 9, in the embodiment, the pair of dies 10 further includes an intermediate plate 14, the intermediate plate 14 is mainly disposed between the first die holder 11 and the second die holder 12, when the pressing jig 40 is placed inside the die 10, the intermediate plate 14 and the first die holder 11 are mainly used for first mold matching, so as to prevent the pressing jig 40 from deviating when the first die holder 11 and the second die holder 12 are matched, and further, the semi-finished product 20 can be positioned in advance, so that the relative position between the semi-finished product 20 and the carrying portion 111 can be effectively ensured before the first mold matching of the first die holder 11 and the second die holder 12, and then the first mold matching is performed, thereby further increasing the yield after the injection molding.
In conclusion, the present invention has been made to meet the requirements of the patent application, and the patent application is made in accordance with the law. However, the above description is only a preferred embodiment of the present invention, and the claims of the present invention should not be limited thereto. Modifications and variations of this invention, which will occur to those skilled in the art and which fall within the spirit of this invention, are intended to be covered by the following claims.
Claims (9)
1. A method of injection molding on a green article, comprising the steps of:
a step of placing a semi-finished product: firstly, providing a pair of dies, wherein the dies comprise a first die holder, a second die holder and a middle plate, the middle plate is arranged between the first die holder and the second die holder, a forming space is formed between the first die holder and the second die holder, and then a semi-finished product is placed into the dies;
a semi-finished product prepressing step: providing a pressing jig, placing the pressing jig between the first die holder and the middle plate, firstly performing die matching with the first die holder through the middle plate, then performing primary die matching with the first die holder and the second die holder to generate a pre-die resultant force between the first die holder and the second die holder, pressing the semi-finished product into the first die holder through the pre-die resultant force by using the pressing jig, and forming tight fit between the semi-finished product and the first die holder; and
a forming step: firstly, carrying out first die opening to separate the first die holder from the second die holder, then taking out the press-fit jig, carrying out second die closing on the first die holder and the second die holder, injecting a molding material into the molding space to coat the semi-finished product with the molding material in the molding space, cooling and molding the molding material in the molding space to form a finished product, then carrying out second die opening, and taking out the finished product.
2. The injection molding method of claim 1, wherein the first mold base further comprises a supporting portion, and the semi-finished product is disposed outside the supporting portion and forms the tight fit with the supporting portion.
3. The injection molding method of claim 2, wherein the carrier has a top surface and a sidewall annularly disposed on the top surface and connected to the first mold base, and the sidewall has at least one engaging protrusion protruding therefrom, and the engaging protrusion engages with the semi-finished product.
4. An injection molding method as claimed in claim 3, wherein the semi-finished product has a fitting space therein, so that the semi-finished product is loaded on the loading portion through the fitting space, and the walls of the fitting space are respectively attached to the top surface and the side wall of the loading portion to form the tight fit.
5. The injection molding method of claim 4, wherein a fitting recess is formed in the space corresponding to the fitting protrusion for fitting with the fitting protrusion.
6. The injection molding method of claim 2, wherein the second mold base further comprises a pressing portion pressed on an outer surface of the semi-finished product.
7. The method as claimed in claim 2, wherein at least one ejection mechanism is further disposed in the first mold base, and the ejection mechanism is disposed in the carrying portion for ejecting the product from the first mold base through the ejection mechanism.
8. The injection molding method of claim 1, wherein the second mold base further comprises at least one runner for the molding material to flow, and the runner is connected to the molding space such that the molding material enters the molding space through the runner.
9. The injection molding method of claim 8, wherein the semi-finished product is made of a plastic material and the molding material is a silicone material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010126218.7A CN113320078B (en) | 2020-02-28 | 2020-02-28 | Injection molding method on semi-finished product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010126218.7A CN113320078B (en) | 2020-02-28 | 2020-02-28 | Injection molding method on semi-finished product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113320078A CN113320078A (en) | 2021-08-31 |
| CN113320078B true CN113320078B (en) | 2022-07-12 |
Family
ID=77412503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010126218.7A Active CN113320078B (en) | 2020-02-28 | 2020-02-28 | Injection molding method on semi-finished product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113320078B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201296016Y (en) * | 2008-08-04 | 2009-08-26 | 鸿富锦精密工业（深圳）有限公司 | A forming device of in-mold decorations |
| TW201144040A (en) * | 2010-06-03 | 2011-12-16 | Techmech Technologies Corp | Manufacturing mold for fastener device |
| CN103108736A (en) * | 2010-09-02 | 2013-05-15 | 奥林巴斯株式会社 | Method for producing resin molded article and mold for resin molded article |
| CN104512001A (en) * | 2013-09-25 | 2015-04-15 | 丰田纺织株式会社 | Method of manufacturing resin molded member |
| CN205439090U (en) * | 2015-12-31 | 2016-08-10 | 塑能科技（苏州）有限公司 | Tool of injecing |
| CN207669654U (en) * | 2017-11-02 | 2018-07-31 | 常州星宇车灯股份有限公司 | A kind of bullet block structure for penetrating pushing method for double-colored inverted mold first |
-
2020
- 2020-02-28 CN CN202010126218.7A patent/CN113320078B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201296016Y (en) * | 2008-08-04 | 2009-08-26 | 鸿富锦精密工业（深圳）有限公司 | A forming device of in-mold decorations |
| TW201144040A (en) * | 2010-06-03 | 2011-12-16 | Techmech Technologies Corp | Manufacturing mold for fastener device |
| CN103108736A (en) * | 2010-09-02 | 2013-05-15 | 奥林巴斯株式会社 | Method for producing resin molded article and mold for resin molded article |
| CN104512001A (en) * | 2013-09-25 | 2015-04-15 | 丰田纺织株式会社 | Method of manufacturing resin molded member |
| CN205439090U (en) * | 2015-12-31 | 2016-08-10 | 塑能科技（苏州）有限公司 | Tool of injecing |
| CN207669654U (en) * | 2017-11-02 | 2018-07-31 | 常州星宇车灯股份有限公司 | A kind of bullet block structure for penetrating pushing method for double-colored inverted mold first |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113320078A (en) | 2021-08-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101825995B1 (en) | Integral molding manufacturing method and manufacturing device for waterproof structure of 3c electronic products | |
| CN107186963B (en) | Precision mould of copying machine deep cavity injection molding and forming method thereof | |
| CN106994765B (en) | Precision die for injection molding part of storage battery of electric vehicle and molding method thereof | |
| CN112643962A (en) | Injection molding process of mobile phone protective sleeve | |
| CN105643871A (en) | Injection molding method of insert molding piece | |
| CN109109265A (en) | One kind vacuumizing auxiliary double-shot moulding device | |
| KR101608440B1 (en) | Composite molding apparatus of press and injection and composite molding method | |
| KR20160000996U (en) | Mold for injection molding | |
| CN113320078B (en) | Injection molding method on semi-finished product | |
| CN107443687A (en) | A kind of air-conditioning moulding injection mold and injection moulding process with contraction distortion control | |
| CN109702974B (en) | Printer bottom shell and injection molding control method thereof | |
| CN104924529A (en) | Tray mold facilitating injection molding of bottom feet | |
| CN209738182U (en) | Injection mold of glue-overflow-preventing structure | |
| CN107932838B (en) | Disposable forming heel and forming die thereof | |
| CN209504764U (en) | A kind of novel mould core structure and the automobile parts molding die with the structure | |
| CN108582665B (en) | Forming die of injection molding with inserts | |
| CN207669682U (en) | A kind of high-precision high-light no-trace injection-die | |
| CN109849272A (en) | A kind of novel mould core structure and the automobile parts molding die with the structure | |
| US11389995B2 (en) | Injection molding method for a semifinished product | |
| CN210552700U (en) | Forming die of large garbage can body | |
| CN217968200U (en) | Injection mold capable of guiding materials at uniform speed and preventing materials from being broken | |
| CN210257042U (en) | Adopt injection mold of garbage bin of many branch runners | |
| CN104626464A (en) | Injection mold for inner cover member of electronic device and method for forming inner cover member using the same | |
| CN204844694U (en) | Material belt high accuracy inserts injection mold | |
| CN216329695U (en) | Injection mold for mobile phone protective sleeve |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230308 Address after: No. 688, Huangpujiang North Road, Zhoushi Town, Kunshan City, Suzhou City, Jiangsu Province Patentee after: KUNSHAN DRAGONSTATE ELECTRONIC TECHNOLOGY Co.,Ltd. Patentee after: DRAGONSTATE TECHNOLOGY Co.,Ltd. Address before: No. 688, Huangpujiang North Road, Zhoushi Town, Kunshan City, Suzhou City, Jiangsu Province Patentee before: KUNSHAN DRAGONSTATE ELECTRONIC TECHNOLOGY Co.,Ltd. Patentee before: CONCRAFT HOLDING Co.,Ltd. |
|
| TR01 | Transfer of patent right |