CN113021771A - Low-pressure injection molding skin cutting mold structure and using method thereof - Google Patents
Low-pressure injection molding skin cutting mold structure and using method thereof Download PDFInfo
- Publication number
- CN113021771A CN113021771A CN202110213330.9A CN202110213330A CN113021771A CN 113021771 A CN113021771 A CN 113021771A CN 202110213330 A CN202110213330 A CN 202110213330A CN 113021771 A CN113021771 A CN 113021771A
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- China
- Prior art keywords
- skin
- pressure injection
- injection molding
- low
- mold structure
- 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.)
- Pending
Links
- 238000005520 cutting process Methods 0.000 title claims abstract description 36
- 238000001746 injection moulding Methods 0.000 title claims abstract description 23
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000004080 punching Methods 0.000 claims abstract description 19
- 238000002347 injection Methods 0.000 claims abstract description 11
- 239000007924 injection Substances 0.000 claims abstract description 11
- 239000004744 fabric Substances 0.000 claims description 4
- 239000002991 molded plastic Substances 0.000 claims 1
- 238000000465 moulding Methods 0.000 abstract description 5
- 230000001360 synchronised effect Effects 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000009966 trimming Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012778 molding material Substances 0.000 description 1
- 238000003825 pressing Methods 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
- B29C45/17—Component parts, details or accessories; Auxiliary operations
- B29C45/26—Moulds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
- B26F1/00—Perforating; Punching; Cutting-out; Stamping-out; Apparatus therefor
- B26F1/38—Cutting-out; Stamping-out
- B26F1/44—Cutters therefor; Dies therefor
-
- 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
- B29C45/1418—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 the inserts being deformed or preformed, e.g. by the injection pressure
-
- 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
- B29C45/1418—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 the inserts being deformed or preformed, e.g. by the injection pressure
- B29C2045/14188—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 the inserts being deformed or preformed, e.g. by the injection pressure trimming the article in the mould
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Forests & Forestry (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention relates to the field of low-pressure injection molding, and discloses a low-pressure injection molding skin cutting mold structure which comprises a cavity and a mold core matched with the cavity, wherein a plurality of concave cavities are formed in the cavity, mold inserts are arranged in the concave cavities, each mold insert comprises a base and a punching cutter arranged on the base, the cutter edge of each punching cutter points to the mold core, at least two elastic blocks pointing to the mold core are further arranged on the base, the elastic blocks are distributed on two sides of each punching cutter, a groove for containing the elastic blocks is formed in the base, and the elastic blocks can move up and down in the groove. The invention also discloses a use method of the low-pressure injection molding skin cutting mold structure. The invention relates to a low-pressure injection skin cutting mold structure and a use method thereof, wherein a cutting function structure is arranged, so that the molding and cutting are realized, the molding and cutting are carried out in the same mold and synchronous steps, and a large amount of labor and equipment cost is saved.
Description
Technical Field
The invention relates to the field of low-pressure injection molding, in particular to a low-pressure injection molding skin cutting mold structure and a using method thereof.
Background
The low-pressure injection molding is a molding process of injecting an injection molding material into a mold through bottom injection molding pressure to quickly solidify a skin and plastic together, and is widely used for automobile parts. However, after molding, the skin needs to be trimmed.
In the traditional forming and trimming process, the fabric is firstly hung, then the die is closed, the die is opened after injection molding, the formed material is ejected out, and the part is taken.
The problems of manual trimming are that the labor investment is large, and the quality of manual trimming is unstable; and die-cut mould is tailor, need drop into independent mould, and the expense is great, and need drop into press equipment, occupies the place, continuously consumes the productivity, and the input cost is great.
Disclosure of Invention
The invention aims to provide a low-pressure injection skin cutting mold structure and a using method thereof, aiming at the defects of the technology, the low-pressure injection skin cutting mold structure is provided with a cutting function structure, the forming and cutting are realized, the molding and cutting are carried out in the same mold and synchronous steps, and a large amount of labor and equipment cost is saved.
In order to achieve the purpose, the low-pressure injection skin cutting mold structure comprises a cavity and a core matched with the cavity, wherein a plurality of concave cavities are formed in the cavity, inserts are arranged in the concave cavities, each insert comprises a base and a punching cutter arranged on the base, the cutter edge of each punching cutter points to the core, at least two elastic blocks pointing to the core are further arranged on the base, the elastic blocks are distributed on two sides of each punching cutter, a groove for containing the elastic blocks is formed in the base, and the elastic blocks can move up and down in the groove.
Preferably, the lower surface of the base is located within the cavity.
Preferably, the cutting edge of the die cutter extends out of the cavity.
Preferably, the lower end of the bullet protrudes out of the cavity.
Preferably, the lower end of the elastic block is lower than the knife edge of the punching knife.
A use method of the low-pressure injection molding skin cutting mold structure comprises the following steps:
A) hanging the fabric: placing the skin into a mold;
B) mold closing is started: the elastic block contacts the surface skin first, and the surface skin is pre-pressed;
C) and (3) continuously closing the mold: continuously pressing the elastic blocks, advancing a stamping knife, and cutting the surface skin by two;
D) injection molding, ejection and piece taking: and (5) after the surface skin is tightly pressed, performing injection molding, after the injection molding is finished, ejecting, and taking a piece.
Compared with the prior art, the invention has the following advantages:
1. the cutting function structure is arranged, the forming and cutting are realized, the operation is carried out in the same die and in the same step, and the cutting quality is stable;
2. the production period is shorter, the maintenance is simple, and the equipment productivity investment is saved;
3. the investment of cutting equipment and a die is reduced, the field is saved, and more space is saved;
4. while optimizing and shortening the process flow, the method can greatly reduce the personnel and working hours of production investment and the cost of the early-stage developed die, and can save a large amount of labor and equipment cost for enterprises.
Drawings
FIG. 1 is a schematic structural view of a low-pressure injection skin cutting mold structure according to the present invention;
FIG. 2 is a schematic view of the structure of the bullet block in contact with the skin when the present invention is in use;
FIG. 3 is an enlarged view of the insert of FIG. 2;
FIG. 4 is a schematic view of the structure of the present invention when the elastic block presses the skin tightly;
FIG. 5 is an enlarged view of the insert of FIG. 4;
FIG. 6 is a schematic view of the structure of the skin cutting device of the present invention;
fig. 7 is an enlarged view of the insert of fig. 6.
The components in the figures are numbered as follows:
the die comprises a cavity 1, a core 2, a cavity 3, an insert 4, a base 5, a punch 6, an elastic block 7, a groove 8 and a skin 9.
Detailed Description
The invention is described in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1, the low-pressure injection skin cutting mold structure of the invention comprises a cavity 1 and a core 2 matched with the cavity 1, wherein a plurality of cavities 3 are arranged in the cavity 1, insert 4 is arranged in the cavity 3, the insert 4 comprises a base 5 and a punching knife 6 arranged on the base 5, the knife edge of the punching knife 6 points to the core 2, at least two elastic blocks 7 pointing to the core 2 are also arranged on the base 5, the elastic blocks 7 are distributed at two sides of the punching knife 6, a groove 8 for accommodating the elastic blocks 7 is arranged on the base 5, and the elastic blocks 7 can move up and down in the groove 8.
Wherein, the lower surface of the base 5 is positioned in the cavity 3, the knife edge of the punching knife 6 extends out of the cavity 3, the lower end of the elastic block 7 extends out of the cavity 3 in the initial state, the lower end of the elastic block 7 is lower than the knife edge of the punching knife 6, and the lower end of the elastic block 7 is higher than the knife edge of the punching knife 6 in the compression state
The use method of the low-pressure injection molding skin cutting mold structure comprises the following steps:
A) hanging the fabric: placing the skin 9 into a mold;
B) mold closing is started: as shown in fig. 2 and 3, the elastic block 7 contacts the surface skin 9 first, and pre-presses the surface skin 9;
C) and (3) continuously closing the mold: as shown in fig. 4 and 5, the elastic block 7 is continuously compressed until the stamping knife 6 moves forward as shown in fig. 6 and 7, and the skin 9 is cut by two;
D) injection molding, ejection and piece taking: and (4) after the surface skin 9 is tightly pressed, performing injection molding, ejecting after the injection molding is finished, and taking a piece.
The invention relates to a low-pressure injection skin cutting die structure and a using method thereof, wherein a cutting function structure is arranged on the die, so that the forming and cutting are realized, the same die and synchronous steps are carried out, and the trimming quality is stable; the production period is shorter, the maintenance is simple, and the equipment productivity investment is saved; the investment of cutting equipment and a die is reduced, the field is saved, and more space is saved; while optimizing and shortening the process flow, the method can greatly reduce the personnel and working hours of production investment and the cost of the early-stage developed die, and can save a large amount of labor and equipment cost for enterprises.
Claims (6)
1. The utility model provides a skin cutting die structure is moulded plastics to low pressure, including die cavity (1) and with die cavity (1) complex core (2), its characterized in that: the die is characterized in that a plurality of cavities (3) are arranged inside the die cavity (1), insert pieces (4) are arranged in the cavities (3), each insert piece (4) comprises a base (5) and a punching knife (6) arranged on the base (5), the knife edge of each punching knife (6) points to the corresponding die core (2), at least two elastic blocks (7) pointing to the corresponding die cores (2) are further arranged on the bases (5), the elastic blocks (7) are distributed on two sides of the corresponding punching knife (6), grooves (8) for containing the elastic blocks (7) are formed in the bases (5), and the elastic blocks (7) can move up and down in the grooves (8).
2. The low pressure injection skin cutting mold structure of claim 1, wherein: the lower surface of the base (5) is positioned in the concave cavity (3).
3. The low pressure injection skin cutting mold structure of claim 1, wherein: the knife edge of the punching knife (6) extends out of the concave cavity (3).
4. The low pressure injection skin cutting mold structure of claim 1, wherein: the lower end of the elastic block (7) extends out of the concave cavity (3).
5. The low pressure injection skin cutting mold structure of claim 1, wherein: the lower end of the elastic block (7) is lower than the knife edge of the punching knife (6).
6. The use method of the low-pressure injection molding skin cutting mold structure according to any one of claims 1 to 5, characterized in that: the method comprises the following steps:
A) hanging the fabric: placing the skin (9) in a mould;
B) mold closing is started: the elastic block (7) is firstly contacted with the surface skin (9) to pre-press the surface skin (9);
C) and (3) continuously closing the mold: the elastic block (7) is continuously compressed, the punching knife (6) moves forward, and the skin (9) is cut by two;
D) injection molding, ejection and piece taking: and (3) after the surface skin (9) is tightly pressed, performing injection molding, ejecting after the injection molding is finished, and taking a piece.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110213330.9A CN113021771A (en) | 2021-02-25 | 2021-02-25 | Low-pressure injection molding skin cutting mold structure and using method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110213330.9A CN113021771A (en) | 2021-02-25 | 2021-02-25 | Low-pressure injection molding skin cutting mold structure and using method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113021771A true CN113021771A (en) | 2021-06-25 |
Family
ID=76462048
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110213330.9A Pending CN113021771A (en) | 2021-02-25 | 2021-02-25 | Low-pressure injection molding skin cutting mold structure and using method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113021771A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113580579A (en) * | 2021-08-04 | 2021-11-02 | 江苏瀚皋机械有限公司 | Pneumatic auxiliary skin attaching punching die and process thereof |
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| CN211640654U (en) * | 2020-01-20 | 2020-10-09 | 延锋汽车饰件系统重庆有限公司 | Anti-falling structure for molding female die of automobile interior skin |
-
2021
- 2021-02-25 CN CN202110213330.9A patent/CN113021771A/en active Pending
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| CN102858511A (en) * | 2010-03-30 | 2013-01-02 | Nec个人电脑株式会社 | Injection-molding device, injection molding method, and housing |
| CN102795035A (en) * | 2011-05-24 | 2012-11-28 | 紫白有限公司 | Dibit-replacement in-mould ejection and thermal transfer technology |
| CN103331873A (en) * | 2013-07-23 | 2013-10-02 | 天津国丰模具有限公司 | Low pressure injection mold and injection method |
| CN103332224A (en) * | 2013-07-23 | 2013-10-02 | 天津国丰模具有限公司 | Automobile trim and preparation device and preparation method thereof |
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| CN204585691U (en) * | 2015-02-26 | 2015-08-26 | 森田印刷厂股份有限公司 | In order to manufacture the jetting mold being combined with the plastics thing of cloth |
| CN205800049U (en) * | 2016-06-14 | 2016-12-14 | 昆山峰实电子科技有限公司 | IMF mould is cut in a kind of mould |
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| CN211221872U (en) * | 2019-09-02 | 2020-08-11 | 天津同捷汽车设计有限公司 | Low pressure injection moulding mould inscribe surface fabric mould structure |
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Application publication date: 20210625 |