CN109849256A - Instrument housing resin injection molding technique - Google Patents
Instrument housing resin injection molding technique Download PDFInfo
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- CN109849256A CN109849256A CN201711237199.XA CN201711237199A CN109849256A CN 109849256 A CN109849256 A CN 109849256A CN 201711237199 A CN201711237199 A CN 201711237199A CN 109849256 A CN109849256 A CN 109849256A
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- injection molding
- temperature
- injection
- resin
- instrument housing
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
A kind of instrument housing resin injection molding technique is disclosed in the present invention, it is melted the following steps are included: 1) POM resin is added in charging barrel of injection molding machine, barrel temperature is divided into four sections and is controlled: first segment temperature is 150 DEG C -180 DEG C, second segment temperature is 170 DEG C -190 DEG C, third section temperature is 180 DEG C -200 DEG C, and nozzle temperature is 190 DEG C -210 DEG C；2) molding die is preheated, control molding die temperature is 70 DEG C -90 DEG C；3) it is injected into molding die, injection speed 5-50mm/s, injection pressure control is 1000-1500kg/cm2, pressure maintaining is carried out when the 80%-90% of shaping mould type chamber is melt melt resin filling, dwell pressure control is 500-1000kg/cm2；4) pressure maintaining 5-10s, after cooling, demoulding.According to the injection molding feature of POM, the technological parameters such as heating temperature, injection pressure and injection speed when by control injection molding realize the high quality injection molding to POM resin material, have moulding Forming Quality preferable, the high feature of shaping efficiency.
Description
Technical field
The present invention relates to injection molding technology field, in particular to a kind of instrument housing resin injection molding technique.
Background technique
Acetal resin be it is a kind of without side chain, high density, high crystalline linear polymer, by chemical in its strand
The difference of structure can be divided into acefal homopolymer and two kinds of copolymerized methanal.Acefal homopolymer density, crystallinity, fusing point are relatively high but hot
Stability is poor, processing temperature narrow range, slightly lower to ph stability；And copolymerized methanal density, crystallinity, fusing point, intensity are all
Lower but thermal stability is good, is not easily decomposed, and processing temperature range is wide, good to ph stability.Acetal resin is a kind of excellent
The engineering plastics of comprehensive performance have good physics, mechanically and chemically performance, and have excellent crocking resistance, can
It is widely used in the injection molding of fascia, instrument and meter shell, cabinet etc..
Summary of the invention
The purpose of the present invention is to provide a kind of instrument housing resin injection molding techniques, and Forming Quality is preferable, molding effect
Rate is high.
In order to solve the above technical problems, The technical solution adopted by the invention is as follows:
A kind of instrument housing resin injection molding technique, comprising the following steps:
1) POM resin is added in charging barrel of injection molding machine and is melted, barrel temperature is divided into four sections and is controlled: first segment
Temperature is 150 DEG C -180 DEG C, and second segment temperature is 170 DEG C -190 DEG C, and third section temperature is 180 DEG C -200 DEG C, and nozzle temperature is
190℃-210℃；
2) molding die is preheated, control molding die temperature is 70 DEG C -90 DEG C；
3) it is injected into molding die, injection speed 5-50mm/s, injection pressure control is 1000-1500kg/cm2,
Pressure maintaining is carried out when the 80%-90% of shaping mould type chamber is melt melt resin filling, dwell pressure control is 500-1000kg/
cm2；
4) pressure maintaining 5-10s, after cooling, demoulding.
Further, the control of barrel screw speed is 100-150rpm in the step 3), and back pressure control is 5-10kg/
cm2。
Further, the POM resin is dried using drying machine before the forming, drying time 3-4h.
Further, check (non-return) valve is provided on the injection moulding machine.
The POM resin instrument housing obtained using above-mentioned injection molding process is further related in the present invention.
It is further related in the present invention using application of the above-mentioned injection molding process in POM resin injection molding.
Injection molding feature of the present invention according to POM, heating temperature, injection pressure and note when by control injection molding
The technological parameters such as firing rate degree realize the high quality injection molding to POM resin material, have moulding Forming Quality preferable, at
The high-efficient feature of type.
Specific embodiment
The present invention is further illustrated combined with specific embodiments below.
Embodiment one
Instrument housing resin injection molding technique in the present embodiment, comprising the following steps:
1) POM resin is dried using drying machine before the forming, drying time 3-4h.POM resin is added
Melt into charging barrel of injection molding machine, barrel temperature is divided into four sections and is controlled: first segment temperature is 160 DEG C, second segment temperature
It is 180 DEG C, third section temperature is 190 DEG C, and nozzle temperature is 200 DEG C；
2) molding die is preheated, control molding die temperature is 80 DEG C；
3) it is injected into molding die, injection speed 10mm/s, injection pressure control is 1000kg/cm2, work as shaping mould
The 80% of tool type chamber carries out pressure maintaining when being melt melt resin filling, dwell pressure control is 500kg/cm2；The control of barrel screw speed
For 100rpm, back pressure control is 5kg/cm2；It is provided with check (non-return) valve on injection moulding machine, prevents molten resin water conservancy diversion from die cavity
Feed back cylinder；
4) pressure maintaining 5s, after cooling, demoulding.
Instrument housing Forming Quality obtained in the present embodiment is preferable, has no obvious shortcoming.
Embodiment two
Instrument housing resin injection molding technique in the present embodiment, comprising the following steps:
1) POM resin is dried using drying machine before the forming, drying time 4h.POM resin is added to
Melt in charging barrel of injection molding machine, barrel temperature is divided into four sections and is controlled: first segment temperature is 160 DEG C, and second segment temperature is
190 DEG C, third section temperature is 190 DEG C, and nozzle temperature is 210 DEG C；
2) molding die is preheated, control molding die temperature is 90 DEG C；
3) it is injected into molding die, injection speed 50mm/s, injection pressure control is 1500kg/cm2, work as shaping mould
The 90% of tool type chamber carries out pressure maintaining when being melt melt resin filling, dwell pressure control is 1000kg/cm2；Barrel screw speed control
It is made as 150rpm, back pressure control is 10kg/cm2；It is provided with check (non-return) valve on injection moulding machine, prevents molten resin from leading from die cavity
Flow back to barrel；
4) pressure maintaining 10s, after cooling, demoulding.
Instrument housing Forming Quality obtained in the present embodiment is preferable, has no obvious shortcoming.
The POM resin instrument housing obtained using above-mentioned injection molding process is further related in the present invention.
It is further related in the present invention using application of the above-mentioned injection molding process in POM resin injection molding.
Injection molding feature of the present invention according to POM, heating temperature, injection pressure and note when by control injection molding
The technological parameters such as firing rate degree realize the high quality injection molding to POM resin material, have moulding Forming Quality preferable, at
The high-efficient feature of type.
Specification of the invention be considered as it is illustrative and not restrictive, on the basis of the present invention, art technology
For personnel according to disclosed technology contents, some replace can be made to some of technical characteristics by not needing creative labor
It changes and deforms, be within the scope of the invention.
Claims (6)
1. instrument housing resin injection molding technique, which comprises the following steps:
1) POM resin is added in charging barrel of injection molding machine and is melted, barrel temperature is divided into four sections and is controlled: first segment temperature
It is 150 DEG C -180 DEG C, second segment temperature is 170 DEG C -190 DEG C, and third section temperature is 180 DEG C -200 DEG C, nozzle temperature 190
℃-210℃；
2) molding die is preheated, control molding die temperature is 70 DEG C -90 DEG C；
3) it is injected into molding die, injection speed 5-50mm/s, injection pressure control is 1000-1500kg/cm2, work as molding
The 80%-90% of mold cavity carries out pressure maintaining when being melt melt resin filling, dwell pressure control is 500-1000kg/cm2；
4) pressure maintaining 5-10s, after cooling, demoulding.
2. instrument housing resin injection molding technique according to claim 1, it is characterised in that: barrel in the step 3)
Screw speed control is 100-150rpm, and back pressure control is 5-10kg/cm2。
3. instrument housing resin injection molding technique according to claim 1, it is characterised in that: the POM resin at
It is dried before type using drying machine, drying time 3-4h.
4. instrument housing resin injection molding technique according to claim 1, it is characterised in that: on the injection moulding machine
It is provided with check (non-return) valve.
5. the POM resin instrument housing obtained using any one of the claims 1 to 4 injection molding process.
6. a kind of application of any one of the claims 1 to 4 injection molding process in POM resin injection molding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711237199.XA CN109849256A (en) | 2017-11-30 | 2017-11-30 | Instrument housing resin injection molding technique |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711237199.XA CN109849256A (en) | 2017-11-30 | 2017-11-30 | Instrument housing resin injection molding technique |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109849256A true CN109849256A (en) | 2019-06-07 |
Family
ID=66888053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711237199.XA Withdrawn CN109849256A (en) | 2017-11-30 | 2017-11-30 | Instrument housing resin injection molding technique |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109849256A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111319185A (en) * | 2020-03-23 | 2020-06-23 | 德红柜智能科技(厦门)有限公司 | Preparation method of high-barrier and high-swelling-resistance lithium ion battery shell |
-
2017
- 2017-11-30 CN CN201711237199.XA patent/CN109849256A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111319185A (en) * | 2020-03-23 | 2020-06-23 | 德红柜智能科技(厦门)有限公司 | Preparation method of high-barrier and high-swelling-resistance lithium ion battery shell |
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Legal Events
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190607 |