CN103950141A - Vacuum injection molding process for power plugs - Google Patents
Vacuum injection molding process for power plugs Download PDFInfo
- Publication number
- CN103950141A CN103950141A CN201410166689.5A CN201410166689A CN103950141A CN 103950141 A CN103950141 A CN 103950141A CN 201410166689 A CN201410166689 A CN 201410166689A CN 103950141 A CN103950141 A CN 103950141A
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- CN
- China
- Prior art keywords
- material feeding
- injection molding
- injection
- stage
- cavity
- 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.)
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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
- B29C45/34—Moulds having venting means
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
Abstract
The invention aims to provide a vacuum injection molding process for power plugs. The injection molding process comprises the following steps of die heating, material injection, pressure maintaining, cooling and demoulding, wherein in the step of material injection and the step of pressure maintaining, an operation of synchronously vacuumizing an injection mold cavity is always kept, and in the step of cooling, the operation of vacuumizing the injection mold cavity is stopped. Through vacuumizing an injection mold inner-cavity while injecting materials, the gas resistance in the injection mold inner-cavity is reduced, and the liquidity of injection molding materials is increased, so that injection molding is complete, the occurrence of an injection molding empty-cavity is prevented, and the efficiency of injection molding can be effectively improved. Due to the occurrence of the cavity and the timed demoulding of injection molding, the overflow of foamed materials is avoided, and the work efficiency is improved.
Description
Technical field
The present invention relates to Shooting Technique, be specifically related to a kind of vacuum injection technique of attaching plug.
Background technology
The Shooting Technique of attaching plug is: mold heated, material feeding, and pressurize, cooling, the demoulding.But the problem of the existence of existing technique is: 1) injection moulding speed is slow, affects production efficiency; 2) due to the small volume of plug, exhaust passage design comparison is narrow, causes the flowing velocity of sizing material slower, even occurs filling incomplete phenomenon, scraps and brings certain economic loss.Therefore solve the bad and efficiency of attaching plug injection moulding slow seem particularly important.
Summary of the invention
For above-mentioned deficiency, the invention provides a kind of attaching plug vacuum injection technique, by marginal not material limit, injection mould inner chamber is vacuumized, reduce the air resistance of injection mould inner chamber, increase the mobility of injection molding material, make injection moulding complete, prevent the appearance of injection moulding cavity, and increase work efficiency.
The object of this invention is to provide a kind of attaching plug vacuum injection technique, described Shooting Technique comprises the following steps: mold heated → material feeding → pressurize → cooling → demoulding, described material feeding stage and packing stage keep injection moulding die cavity synchronously to vacuumize always, enter cooling stage and stop at once vacuumizing.
Further improvement of the present invention is: described dwell pressure is the 80-90% of material feeding maximum pressure.
Further improvement of the present invention is: described dwell pressure is 85% of material feeding maximum pressure.
Further improvement of the present invention is: in the process of described material feeding stage and packing stage, keep die cavity heating, mould-cavity temperature remains on 30-50 DEG C.
Further improvement of the present invention is: the material feeding pressure in described material feeding stage is 100-150MPa.
Beneficial effect of the present invention: by marginal not material limit, injection mould inner chamber is vacuumized, reduce the air resistance of injection mould inner chamber, increase the mobility of injection molding material, make injection moulding complete, prevent the appearance of injection moulding cavity, can effectively improve injection moulding efficiency.
Detailed description of the invention
In order to deepen the understanding of the present invention, below in conjunction with embodiment, the invention will be further described, and this embodiment only, for explaining the present invention, does not form limiting the scope of the present invention.
Embodiment mono-
The present embodiment provides a kind of attaching plug vacuum injection technique, described Shooting Technique comprises the following steps: mold heated → material feeding → pressurize → cooling → demoulding, described material feeding stage and packing stage keep injection moulding die cavity synchronously to vacuumize always, enter cooling stage and stop at once vacuumizing.Described dwell pressure is 85% of material feeding maximum pressure.In the process of described material feeding stage and packing stage, keep die cavity heating, mould-cavity temperature remains on 40 DEG C.The material feeding pressure in described material feeding stage is 130MPa.
Embodiment bis-
The present embodiment provides a kind of attaching plug vacuum injection technique, described Shooting Technique comprises the following steps: mold heated → material feeding → pressurize → cooling → demoulding, described material feeding stage and packing stage keep injection moulding die cavity synchronously to vacuumize always, enter cooling stage and stop at once vacuumizing.Described dwell pressure is 80% of material feeding maximum pressure.In the process of described material feeding stage and packing stage, keep die cavity heating, mould-cavity temperature remains on 30 DEG C.The material feeding pressure in described material feeding stage is 100MPa.
Embodiment tri-
The present embodiment provides a kind of attaching plug vacuum injection technique, described Shooting Technique comprises the following steps: mold heated → material feeding → pressurize → cooling → demoulding, described material feeding stage and packing stage keep injection moulding die cavity synchronously to vacuumize always, enter cooling stage and stop at once vacuumizing.Described dwell pressure is 90% of material feeding maximum pressure.In the process of described material feeding stage and packing stage, keep die cavity heating, mould-cavity temperature remains on 50 DEG C.The material feeding pressure in described material feeding stage is 150MPa.
Above three embodiment, vacuumize injection mould inner chamber by marginal not material limit, reduce the air resistance of injection mould inner chamber, increase the mobility of injection molding material, make injection moulding complete, prevent the appearance of injection moulding cavity, can effectively improve injection moulding efficiency.
Claims (5)
1. an attaching plug vacuum injection technique, described Shooting Technique comprises the following steps: mold heated → material feeding → pressurize → cooling → demoulding, it is characterized in that: described material feeding stage and packing stage keep injection moulding die cavity synchronously to vacuumize always, enter cooling stage and stop at once vacuumizing.
2. a kind of attaching plug vacuum injection technique as claimed in claim 1, is characterized in that: described dwell pressure is the 80-90% of material feeding maximum pressure.
3. a kind of attaching plug vacuum injection technique as claimed in claim 2, is characterized in that: described dwell pressure is 85% of material feeding maximum pressure.
4. a kind of attaching plug vacuum injection technique as claimed in claim 1, is characterized in that: in the process of described material feeding stage and packing stage, keep die cavity heating, mould-cavity temperature remains on 30-50 DEG C.
5. a kind of attaching plug vacuum injection technique as claimed in claim 1, is characterized in that: the material feeding pressure in described material feeding stage is 100-150MPa.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410166689.5A CN103950141A (en) | 2014-04-24 | 2014-04-24 | Vacuum injection molding process for power plugs |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410166689.5A CN103950141A (en) | 2014-04-24 | 2014-04-24 | Vacuum injection molding process for power plugs |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103950141A true CN103950141A (en) | 2014-07-30 |
Family
ID=51327561
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410166689.5A Pending CN103950141A (en) | 2014-04-24 | 2014-04-24 | Vacuum injection molding process for power plugs |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103950141A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105196481A (en) * | 2015-09-23 | 2015-12-30 | 洛阳市建园模具制造有限公司 | Operation method of die for producing plug insulator |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458711A (en) * | 2002-05-16 | 2003-11-26 | 福州中能电力设备有限公司 | Cable joint and its producing method |
| KR20040067799A (en) * | 2003-01-22 | 2004-07-30 | 하지메 산교 가부시키가이샤 | Apparatus and method for forming objects with high precision |
-
2014
- 2014-04-24 CN CN201410166689.5A patent/CN103950141A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1458711A (en) * | 2002-05-16 | 2003-11-26 | 福州中能电力设备有限公司 | Cable joint and its producing method |
| KR20040067799A (en) * | 2003-01-22 | 2004-07-30 | 하지메 산교 가부시키가이샤 | Apparatus and method for forming objects with high precision |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105196481A (en) * | 2015-09-23 | 2015-12-30 | 洛阳市建园模具制造有限公司 | Operation method of die for producing plug insulator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140730 |
|
| RJ01 | Rejection of invention patent application after publication |