CN111016105B - Insert molding method and device - Google Patents
Insert molding method and device Download PDFInfo
- Publication number
- CN111016105B CN111016105B CN201911239677.XA CN201911239677A CN111016105B CN 111016105 B CN111016105 B CN 111016105B CN 201911239677 A CN201911239677 A CN 201911239677A CN 111016105 B CN111016105 B CN 111016105B
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- China
- Prior art keywords
- cavity
- molten resin
- insert
- injection molding
- mold
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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
- B29C45/76—Measuring, controlling or regulating
- B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
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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
- B29C45/14—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
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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
- B29C45/2602—Mould construction elements
Abstract
The invention discloses an insert molding method and device, wherein the method comprises the following steps: fixing the insert in the cavity between the fixed mold and the movable mold by a clamping structure; injecting a molten resin into the mold cavity; judging whether an injection molding cavity of the clamping structure is filled with molten resin or not; when the injection molding cavity is filled with the molten resin, stopping injecting the molten resin, and sealing the pouring gate; and withdrawing the clamping structure from the mold cavity, and simultaneously enabling the telescopic rod to extrude the molten resin so that the molten resin enters the mold cavity from the injection molding hole. The present invention ensures that the insert is completely sealed in the molten resin.
Description
Technical Field
The invention relates to the technical field of insert molding, in particular to an insert molding method and device.
Background
As a method for producing a molded article having high design, there is an insert molding method. The insert molding method is completed by the steps of preforming, disposing the preformed insert in a mold for injection molding, injecting a heated resin as an injection molding material around the insert, and the like.
In the insert molding method, a mold having a cavity formed between a fixed mold and a movable mold is used, and a support pin is provided to support an insert. Then, after a molten resin is injected into the cavity at one time, the support pin is withdrawn from the cavity, thereby obtaining a resin-sealed electronic substrate as an insert molded body. However, in the prior art, because a supporting structure of the insert is required to be arranged on the mold, it is generally difficult to completely seal the insert in the resin.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide an insert molding method and device, so as to solve the problem that the insert in the prior art cannot be completely sealed in the middle of a mold cavity.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a method of insert molding, the method comprising:
fixing the insert in the cavity between the fixed mold and the movable mold by a clamping structure;
injecting a molten resin into the mold cavity;
judging whether an injection molding cavity of the clamping structure is filled with molten resin or not;
when the injection molding cavity is filled with the molten resin, stopping injecting the molten resin, and sealing the pouring gate;
and withdrawing the clamping structure from the mold cavity, and simultaneously enabling the telescopic rod to extrude the molten resin so that the molten resin enters the mold cavity from the injection molding hole.
Furthermore, the clamping structure is controlled to enter and exit the die cavity through an oil pressure motor.
Further, the telescopic rod is controlled by a servo motor to extrude the molten resin.
Further, whether the molten resin is injected into the injection cavity is judged through a pressure sensor.
Further, the method further comprises: and controlling the extrusion speed of the telescopic rod according to the exit speed of the clamping structure, and keeping the exit speed of the clamping structure the same as the extrusion speed of the telescopic rod.
Further, the process of injecting the molten resin into the cavity is as follows:
aligning the through hole of the insert with the gate;
molten resin is injected into the mold cavity from the gate through the through hole.
Further, the injection molding cavity has a volume equal to the volume of the clamping structure exiting the mold cavity.
An insert molding apparatus, comprising a fixed mold and a movable mold; clamping mechanisms are arranged on the fixed die and the movable die; an injection molding cavity is arranged inside the clamping mechanism; a telescopic rod is arranged in the injection molding cavity; and an injection molding hole is also formed in the inner side wall of the clamping mechanism.
Furthermore, a groove is formed in the inner side wall of the clamping mechanism.
Further, a gate is provided at the top of the fixed mold.
Compared with the prior art, the invention has the following beneficial effects:
according to the invention, the embedded part is fixed through the clamping structure, when the mold cavity is filled with the molten resin, the clamping structure is withdrawn from the two ends, the space of the mold cavity is further enlarged, the telescopic rod is ensured to extrude the molten resin, the molten resin enters the mold cavity from the injection molding cavity to fill the space left by the withdrawal of the clamping structure, and the embedded part is ensured to be completely sealed in the molten resin.
Drawings
FIG. 1 is a schematic view of the structure of the apparatus of the present invention.
Reference numerals: 1-an insert; 2-fixing the mould; 3-movable mould; 4-a mold cavity; 5-a clamping mechanism; 6-groove; 7-a telescopic rod; 8-injection molding holes; 9-pouring gate; 10-a through hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail with reference to the accompanying drawings and specific examples.
As shown in fig. 1, the insert molding method of the present invention is built on the insert molding apparatus shown in fig. 1. An insert molding apparatus of the present invention for injection molding an insert molded article having an insert 1, the insert molding apparatus including a fixed mold 2 and a movable mold 3; when the fixed die 2 and the movable die 3 are butted, a die cavity 4 is formed, clamping mechanisms 5 are arranged on the fixed die 2 and the movable die 3 on two sides of the die cavity 4, and grooves 6 are arranged on the inner side walls of the clamping mechanisms 5; the recess 6 is used for receiving the insert 1 and for fixing the insert 1. The inside of fixture 5 is provided with mould plastics chamber 6, is provided with gliding telescopic link 7 back and forth in the mould plastics chamber 6, still is provided with injection molding hole 8 on the fixture 5's of recess 6 upside lateral wall. The top of the fixed mold 2 is provided with a gate 9. The insert 1 is provided with a through opening 10.
A method of insert molding, the method comprising:
fixing the insert in the cavity between the fixed mold and the movable mold by a clamping structure;
aligning the through hole of the insert with the gate;
injecting molten resin into the die cavity from the sprue through the through hole;
judging whether an injection molding cavity of the clamping structure is filled with molten resin or not;
when the injection molding cavity is filled with the molten resin, stopping injecting the molten resin, and sealing the pouring gate;
and withdrawing the clamping structure from the mold cavity, and simultaneously enabling the telescopic rod to extrude the molten resin so that the molten resin enters the mold cavity from the injection molding hole.
The method further comprises the following steps: and controlling the extrusion speed of the telescopic rod according to the exit speed of the clamping structure, and keeping the exit speed of the clamping structure the same as the extrusion speed of the telescopic rod. And controlling the clamping structure to enter and exit the die cavity through an oil pressure motor. And controlling the telescopic rod to extrude the molten resin by a servo motor. And judging whether the molten resin is injected into the injection molding cavity or not through a pressure sensor. The volume of the injection molding cavity is equal to the volume of the clamping structure exiting from the mold cavity.
The foregoing detailed description has described the present application, and the present application uses specific examples to explain the principles and embodiments of the present application, and the description of the embodiments is only used to help understand the method and core ideas of the present application, and all changes can be made in the specific embodiments and application scope, so in summary, the present application should not be construed as limiting the present application.
Claims (4)
1. An insert molding method using an insert molding apparatus, characterized in that the apparatus comprises a fixed mold and a movable mold; clamping mechanisms are arranged on the fixed die and the movable die; an injection molding cavity is arranged inside the clamping mechanism; a telescopic rod is arranged in the injection molding cavity; the inner side wall of the clamping mechanism is also provided with an injection molding hole; the top of the fixed die is provided with a pouring gate; the embedded part is provided with a through hole; a groove is formed in the inner side wall of the clamping mechanism;
the method comprises the following steps:
fixing the insert in the cavity between the fixed mold and the movable mold by a clamping structure;
aligning the through opening of the insert with the gate; injecting molten resin into the die cavity from the sprue through the through hole;
judging whether an injection molding cavity of the clamping structure is filled with molten resin or not;
when the injection molding cavity is filled with the molten resin, stopping injecting the molten resin, and sealing the pouring gate;
withdrawing the clamping structure from the mold cavity, and simultaneously enabling the telescopic rod to extrude molten resin so that the molten resin enters the mold cavity from the injection molding hole;
controlling the extrusion speed of the telescopic rod according to the exit speed of the clamping structure, and keeping the exit speed of the clamping structure the same as the extrusion speed of the telescopic rod;
the volume of the injection molding cavity is equal to the volume of the clamping structure withdrawn from the mold cavity.
2. The insert molding method using the insert molding apparatus as claimed in claim 1, wherein the holding structure is controlled to move in and out of the cavity by an oil hydraulic motor.
3. The insert molding method using the insert molding apparatus as claimed in claim 1, wherein the expansion link is controlled to extrude the molten resin by a servo motor.
4. The insert molding method using the insert molding apparatus according to claim 1, wherein it is judged whether or not the injection cavity is filled with the molten resin by a pressure sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911239677.XA CN111016105B (en) | 2019-12-06 | 2019-12-06 | Insert molding method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911239677.XA CN111016105B (en) | 2019-12-06 | 2019-12-06 | Insert molding method and device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111016105A CN111016105A (en) | 2020-04-17 |
| CN111016105B true CN111016105B (en) | 2021-08-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911239677.XA Active CN111016105B (en) | 2019-12-06 | 2019-12-06 | Insert molding method and device |
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| Country | Link |
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| CN (1) | CN111016105B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08267504A (en) * | 1995-03-30 | 1996-10-15 | Nissha Printing Co Ltd | Manufacture of insert-molded article and insert mold |
| CN101850593A (en) * | 2009-03-31 | 2010-10-06 | 本田技研工业株式会社 | Insert molding method and device |
| CN201685389U (en) * | 2010-05-07 | 2010-12-29 | 富港电子（东莞）有限公司 | Insert forming die |
| CN104619473A (en) * | 2012-09-12 | 2015-05-13 | 株式会社电装 | Molds for insert molding, injection molding method, and resin molded product formed by mold |
| CN207997512U (en) * | 2018-03-13 | 2018-10-23 | 广州市旭胜模具有限公司 | A kind of pressure type easy mold release vehicle right and left front door sill mold |
| CN109070416A (en) * | 2016-05-25 | 2018-12-21 | 奥林巴斯株式会社 | Insert molding method |
-
2019
- 2019-12-06 CN CN201911239677.XA patent/CN111016105B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08267504A (en) * | 1995-03-30 | 1996-10-15 | Nissha Printing Co Ltd | Manufacture of insert-molded article and insert mold |
| CN101850593A (en) * | 2009-03-31 | 2010-10-06 | 本田技研工业株式会社 | Insert molding method and device |
| CN201685389U (en) * | 2010-05-07 | 2010-12-29 | 富港电子（东莞）有限公司 | Insert forming die |
| CN104619473A (en) * | 2012-09-12 | 2015-05-13 | 株式会社电装 | Molds for insert molding, injection molding method, and resin molded product formed by mold |
| CN109070416A (en) * | 2016-05-25 | 2018-12-21 | 奥林巴斯株式会社 | Insert molding method |
| CN207997512U (en) * | 2018-03-13 | 2018-10-23 | 广州市旭胜模具有限公司 | A kind of pressure type easy mold release vehicle right and left front door sill mold |
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| Publication number | Publication date |
|---|---|
| CN111016105A (en) | 2020-04-17 |
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