CN109866401A - A kind of improvement technique of injection molding process - Google Patents
A kind of improvement technique of injection molding process Download PDFInfo
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- CN109866401A CN109866401A CN201811479738.5A CN201811479738A CN109866401A CN 109866401 A CN109866401 A CN 109866401A CN 201811479738 A CN201811479738 A CN 201811479738A CN 109866401 A CN109866401 A CN 109866401A
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Abstract
The invention discloses a kind of improvement techniques of injection molding process, including S1 raw material preparation, the heating of S2 raw material, and the heating of S3 injection tube, the heating of S4 mold, the injection of S5 raw material, S6 ultrasonic activation, S7 pressure maintaining, S8 jelly water is cooling, S9 die sinking demoulding.The present invention vibrates mold using ultrasonic equipment after injection, it is uniformly distributed the plastics in die cavity, remaining bubble can be made gradually to float simultaneously, less prod internal flaw after molding, mold is kept the temperature after injection, enable raw material cooled and solidified simultaneously, improves the uniformity of product quality, and then improve the total quality of product.
Description
Technical field
The present invention relates to injection molding technical field more particularly to a kind of improvement techniques of injection molding process.
Background technique
Injection molding is also known as injection molding molding, it is a kind of forming method of simultaneous molding of injection.Be at a certain temperature,
The plastic material melted completely by helical screw agitator injects die cavity with high pressure, after cooling and solidifying, the method for obtaining molded product,
This method is suitable for the batch production of complex-shaped component, is important one of processing method.The advantages of injection molding forming method is
Speed of production is fast, high-efficient, operate can be achieved automation, designs and varieties are more, and shape can go from the simple to the complex, size can by greatly to
It is small, and product size is accurate, and product easily updates, and the product of energy forming shape complexity, injection molding is suitable for mass production
With the processing and formings field such as complex-shaped product.
With the development of science and technology, Shooting Technique also reaches its maturity and perfect, at this stage, had been able to by Shooting Technique
The production of many complex parts, product quality are also greatly improved in pairs.But in the prior art, in injection stage, hot melt
Plastics enter problem too fast there are still cooling when mould inside, and when the raw material of the higher molten state of temperature is added to mold
When internal, it is easy the molding effect of product entirety to be influenced, so that product quality is uneven so that the temperature distributing disproportionation of mold weighs
Weighing apparatus, raw material after mould inside is added are difficult that its state is adjusted and is controlled, need to solve problems.
Summary of the invention
The purpose of the present invention is to solve hot melting plastics in the prior art to be added to temperature distributing disproportionation after mould inside
A kind of improvement technique for the injection molding process for weighing and being not easy to the problem of adjusting its state, and propose.
To achieve the goals above, present invention employs following technical solutions:
A kind of improvement technique of injection molding process, comprising the following steps:
S1 raw material preparation: it is put into drying box drying after raw material is washed, takes out raw material after drying；
The heating of S2 raw material: raw material is placed into injecting machine material tube, molten condition is heated to and keeps the temperature；
The heating of S3 injection tube: injection tube is heated to 180 DEG C~200 DEG C, then falls the raw material of the molten condition in step S2
Enter in injection tube；
The heating of S4 mold: injection mold is preheated, upper mold is heated to 100 DEG C~120 DEG C, and lower mold is heated to 80 DEG C
~100 DEG C；
S5 raw material injection: the upper mold and lower the mold hot melting plastic in step S3 being injected by injection nozzle in step S4
In, injection pressure is 80bar~90bar, and injection time is 2s~5s；
S6 ultrasonic activation: being vibrated and heated to mold using ultrasonic equipment, and time of vibration is 10s~15s, then logical
Ultrasonic activation mode is crossed to keep the temperature mold；
S7 pressure maintaining: dwell pressure is 60~80bar, and the dwell time is 1s~3s；
It is cooling that S8 freezes water: mold is cooled down using water dispenser is frozen, cooling temperature is 2 DEG C~5 DEG C, cooling time be 10s~
15s；
S9 die sinking demoulding: it opens mold and takes out product.
Preferably, the ultrasonic frequency vibratory range in step S6 is 10KHZ~25KHZ.
Preferably, the holding temperature in step S6 is 100 DEG C~120 DEG C.
Compared with prior art, the invention has the beneficial effects that:
1, the present invention vibrates mold using ultrasonic equipment after injection, is uniformly distributed the plastics in die cavity,
Remaining bubble can be made gradually to float simultaneously, less prod internal flaw after molding improves the Forming Quality of product；
2, mold is kept the temperature after injection, so that mold is integrally kept uniform temperature, raw material is enable to cool down simultaneously
Solidification, improves the uniformity of product quality, while improving the total quality of product.
Specific embodiment
The technical scheme in the embodiments of the invention will be clearly and completely described below, it is clear that described implementation
Example is only a part of the embodiment of the present invention, instead of all the embodiments.
Embodiment one
A kind of improvement technique of injection molding process, comprising the following steps:
S1 raw material preparation: it is put into drying box drying after raw material is washed, takes out raw material after drying, raw material is cleaned up, avoid
The impurity of attachment is doped to the quality for wherein influencing shaped article after raw material dissolves；
The heating of S2 raw material: raw material being placed into injecting machine material tube, molten condition is heated to and keeps the temperature, and is carried out raw material preparation, is stayed
Use when being molded；
The heating of S3 injection tube: injection tube is heated to 180 DEG C, the raw material of the molten condition in step S2 is then poured into injection tube
In, injection tube is heated in advance, so that raw material will not solidify after pouring into injection tube, avoids wasting, while ensuring that raw material is protected
Certain temperature is held, forming property is more preferably；
The heating of S4 mold: injection mold is preheated, upper mold is heated to 100 DEG C, and lower mold is heated to 80 DEG C；
S5 raw material injection: the upper mold and lower the mold hot melting plastic in step S3 being injected by injection nozzle in step S4
In, injection pressure 80bar, injection time 5s,
S6 ultrasonic activation: being vibrated and heated to mold using ultrasonic equipment, time of vibration 10s, then by super
Acoustic vibration mode keeps the temperature mold, and ultrasonic frequency vibratory range is 10KHZ, and holding temperature is 100 DEG C, utilizes ultrasound
Wave device vibrates mold, is uniformly distributed the plastics in die cavity, while remaining bubble can be made gradually to float, less
Internal flaw after formed product improves the Forming Quality of product, keeps the temperature after injection to mold, keeps mold whole
Body keeps uniform temperature, enables raw material cooled and solidified simultaneously, improves the uniformity of product quality；
S7 pressure maintaining: dwell pressure 60bar, dwell time 3s apply certain pressure, promote raw material to gather more uniform,
Forming Quality is more preferably；
It is cooling that S8 freezes water: being cooled down using water dispenser is frozen to mold, cooling temperature is 2 DEG C, and cooling time, 10s, utilized cold water
Raw material is rapidly cooled, the intensity of plastic part is improved；
S9 die sinking demoulding: it opens mold and takes out product.
1d is placed after product is completely cooling, then its surface quality and integral strength are detected, surface quality
It gets a promotion with integral strength.
Embodiment two
A kind of improvement technique of injection molding process, comprising the following steps:
S1 raw material preparation: it is put into drying box drying after raw material is washed, takes out raw material after drying, raw material is cleaned up, avoid
The impurity of attachment is doped to the quality for wherein influencing shaped article after raw material dissolves；
The heating of S2 raw material: raw material being placed into injecting machine material tube, molten condition is heated to and keeps the temperature, and is carried out raw material preparation, is stayed
Use when being molded；
The heating of S3 injection tube: injection tube is heated to 185 DEG C, the raw material of the molten condition in step S2 is then poured into injection tube
In, injection tube is heated in advance, so that raw material will not solidify after pouring into injection tube, avoids wasting, while ensuring that raw material is protected
Certain temperature is held, forming property is more preferably；
The heating of S4 mold: injection mold is preheated, upper mold is heated to 105 DEG C, and lower mold is heated to 85 DEG C；
S5 raw material injection: the upper mold and lower the mold hot melting plastic in step S3 being injected by injection nozzle in step S4
In, injection pressure 85bar, injection time 3s,
S6 ultrasonic activation: being vibrated and heated to mold using ultrasonic equipment, time of vibration 12s, then by super
Acoustic vibration mode keeps the temperature mold, and ultrasonic frequency vibratory range is 15KHZ, and holding temperature is 100 DEG C, utilizes ultrasound
Wave device vibrates mold, is uniformly distributed the plastics in die cavity, while remaining bubble can be made gradually to float, less
Internal flaw after formed product improves the Forming Quality of product, keeps the temperature after injection to mold, keeps mold whole
Body keeps uniform temperature, enables raw material cooled and solidified simultaneously, improves the uniformity of product quality；
S7 pressure maintaining: dwell pressure 65, dwell time 3s apply certain pressure, promote raw material to gather more uniform, molding
Quality is more preferably；
It is cooling that S8 freezes water: being cooled down using water dispenser is frozen to mold, cooling temperature is 2 DEG C, and cooling time, 10s, utilized cold water
Raw material is rapidly cooled, the intensity of plastic part is improved；
S9 die sinking demoulding: it opens mold and takes out product.
1d is placed after product is completely cooling, then its surface quality and integral strength are detected, surface quality
It gets a promotion with integral strength.
Embodiment three
A kind of improvement technique of injection molding process, comprising the following steps:
S1 raw material preparation: it is put into drying box drying after raw material is washed, takes out raw material after drying, raw material is cleaned up, avoid
The impurity of attachment is doped to the quality for wherein influencing shaped article after raw material dissolves；
The heating of S2 raw material: raw material being placed into injecting machine material tube, molten condition is heated to and keeps the temperature, and is carried out raw material preparation, is stayed
Use when being molded；
The heating of S3 injection tube: injection tube is heated to 190 DEG C, the raw material of the molten condition in step S2 is then poured into injection tube
In, injection tube is heated in advance, so that raw material will not solidify after pouring into injection tube, avoids wasting, while ensuring that raw material is protected
Certain temperature is held, forming property is more preferably；
The heating of S4 mold: injection mold is preheated, upper mold is heated to 105 DEG C, and lower mold is heated to 85 DEG C；
S5 raw material injection: the upper mold and lower the mold hot melting plastic in step S3 being injected by injection nozzle in step S4
In, injection pressure 90bar, injection time 2s,
S6 ultrasonic activation: being vibrated and heated to mold using ultrasonic equipment, time of vibration 15s, then by super
Acoustic vibration mode keeps the temperature mold, and ultrasonic frequency vibratory range is 20KHZ, and holding temperature is 110 DEG C, utilizes ultrasound
Wave device vibrates mold, is uniformly distributed the plastics in die cavity, while remaining bubble can be made gradually to float, less
Internal flaw after formed product improves the Forming Quality of product, keeps the temperature after injection to mold, keeps mold whole
Body keeps uniform temperature, enables raw material cooled and solidified simultaneously, improves the uniformity of product quality；
S7 pressure maintaining: dwell pressure 70bar, dwell time 2s apply certain pressure, promote raw material to gather more uniform,
Forming Quality is more preferably；
It is cooling that S8 freezes water: being cooled down using water dispenser is frozen to mold, cooling temperature is 5 DEG C, and cooling time, 15s, utilized cold water
Raw material is rapidly cooled, the intensity of plastic part is improved；
S9 die sinking demoulding: it opens mold and takes out product.
1d is placed after product is completely cooling, then its surface quality and integral strength are detected, surface quality
It gets a promotion with integral strength.
Example IV
A kind of improvement technique of injection molding process, comprising the following steps:
S1 raw material preparation: it is put into drying box drying after raw material is washed, takes out raw material after drying, raw material is cleaned up, avoid
The impurity of attachment is doped to the quality for wherein influencing shaped article after raw material dissolves；
The heating of S2 raw material: raw material being placed into injecting machine material tube, molten condition is heated to and keeps the temperature, and is carried out raw material preparation, is stayed
Use when being molded；
The heating of S3 injection tube: injection tube is heated to 190 DEG C, the raw material of the molten condition in step S2 is then poured into injection tube
In, injection tube is heated in advance, so that raw material will not solidify after pouring into injection tube, avoids wasting, while ensuring that raw material is protected
Certain temperature is held, forming property is more preferably；
The heating of S4 mold: injection mold is preheated, upper mold is heated to 120 DEG C, and lower mold is heated to 100 DEG C；
S5 raw material injection: the upper mold and lower the mold hot melting plastic in step S3 being injected by injection nozzle in step S4
In, injection pressure 80bar, injection time 3s,
S6 ultrasonic activation: being vibrated and heated to mold using ultrasonic equipment, time of vibration 12s, then by super
Acoustic vibration mode keeps the temperature mold, and ultrasonic frequency vibratory range is 20KHZ, and holding temperature is 100 DEG C, utilizes ultrasound
Wave device vibrates mold, is uniformly distributed the plastics in die cavity, while remaining bubble can be made gradually to float, less
Internal flaw after formed product improves the Forming Quality of product, keeps the temperature after injection to mold, keeps mold whole
Body keeps uniform temperature, enables raw material cooled and solidified simultaneously, improves the uniformity of product quality；
S7 pressure maintaining: dwell pressure 70bar, dwell time 2s apply certain pressure, promote raw material to gather more uniform,
Forming Quality is more preferably；
It is cooling that S8 freezes water: being cooled down using water dispenser is frozen to mold, cooling temperature is 5 DEG C, and cooling time, 10s, utilized cold water
Raw material is rapidly cooled, the intensity of plastic part is improved；
S9 die sinking demoulding: it opens mold and takes out product.
1d is placed after product is completely cooling, then its surface quality and integral strength are detected, surface quality
It gets a promotion with integral strength.
Embodiment five
A kind of improvement technique of injection molding process, comprising the following steps:
S1 raw material preparation: it is put into drying box drying after raw material is washed, takes out raw material after drying, raw material is cleaned up, avoid
The impurity of attachment is doped to the quality for wherein influencing shaped article after raw material dissolves；
The heating of S2 raw material: raw material being placed into injecting machine material tube, molten condition is heated to and keeps the temperature, and is carried out raw material preparation, is stayed
Use when being molded；
The heating of S3 injection tube: injection tube is heated to 200 DEG C, the raw material of the molten condition in step S2 is then poured into injection tube
In, injection tube is heated in advance, so that raw material will not solidify after pouring into injection tube, avoids wasting, while ensuring that raw material is protected
Certain temperature is held, forming property is more preferably；
The heating of S4 mold: injection mold is preheated, upper mold is heated to 120 DEG C, and lower mold is heated to 100 DEG C；
S5 raw material injection: the upper mold and lower the mold hot melting plastic in step S3 being injected by injection nozzle in step S4
In, injection pressure 90bar, injection time 2s,
S6 ultrasonic activation: being vibrated and heated to mold using ultrasonic equipment, time of vibration 15s, then by super
Acoustic vibration mode keeps the temperature mold, and ultrasonic frequency vibratory range is 25KHZ, and holding temperature is 120 DEG C, utilizes ultrasound
Wave device vibrates mold, is uniformly distributed the plastics in die cavity, while remaining bubble can be made gradually to float, less
Internal flaw after formed product improves the Forming Quality of product, keeps the temperature after injection to mold, keeps mold whole
Body keeps uniform temperature, enables raw material cooled and solidified simultaneously, improves the uniformity of product quality；
S7 pressure maintaining: dwell pressure 80bar, dwell time 2s apply certain pressure, promote raw material to gather more uniform,
Forming Quality is more preferably；
It is cooling that S8 freezes water: being cooled down using water dispenser is frozen to mold, cooling temperature is 2 DEG C, and cooling time, 15s, utilized cold water
Raw material is rapidly cooled, the intensity of plastic part is improved；
S9 die sinking demoulding: it opens mold and takes out product.
1d is placed after product is completely cooling, then its surface quality and integral strength are detected, surface quality
It is obviously improved with integral strength.
Technology described in the present invention is not limited to the above embodiments, above description be it is illustrative, not limit
Property, permission of the invention is defined in the claims, and can be changed based on those skilled in the art according to invention, be recombinated
The technology related to the present invention that method obtains, all will within protection scope of the present invention.
Claims (3)
1. a kind of improvement technique of injection molding process, which comprises the following steps:
S1 raw material preparation: it is put into drying box drying after raw material is washed, takes out raw material after drying；
The heating of S2 raw material: raw material is placed into injecting machine material tube, molten condition is heated to and keeps the temperature；
The heating of S3 injection tube: injection tube is heated to 180 DEG C~200 DEG C, then falls the raw material of the molten condition in step S2
Enter in injection tube；
The heating of S4 mold: injection mold is preheated, upper mold is heated to 100 DEG C~120 DEG C, and lower mold is heated to 80 DEG C
~100 DEG C；
S5 raw material injection: the upper mold and lower the mold hot melting plastic in step S3 being injected by injection nozzle in step S4
In, injection pressure is 80bar~90bar, and injection time is 2s~5s；
S6 ultrasonic activation: being vibrated and heated to mold using ultrasonic equipment, and time of vibration is 10s~15s, then logical
Ultrasonic activation mode is crossed to keep the temperature mold；
S7 pressure maintaining: dwell pressure is 60~80bar, and the dwell time is 1s~3s；
It is cooling that S8 freezes water: mold is cooled down using water dispenser is frozen, cooling temperature is 2 DEG C~5 DEG C, cooling time be 10s~
15s；
S9 die sinking demoulding: it opens mold and takes out product.
2. a kind of improvement technique of injection molding process according to claim 1, which is characterized in that the ultrasound in step S6
Wave vibration frequency range is 10KHZ~25KHZ.
3. a kind of improvement technique of injection molding process according to claim 1, which is characterized in that the heat preservation in step S6
Temperature is 100 DEG C~120 DEG C.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110524822A (en) * | 2019-09-03 | 2019-12-03 | 江苏荣腾精密组件科技股份有限公司 | Efficient Shooting Technique |
| CN112248359A (en) * | 2020-09-28 | 2021-01-22 | 徐君东 | Manufacturing process of directional reflective film |
| CN113650251A (en) * | 2021-07-12 | 2021-11-16 | 冠鸿光电科技(武汉)有限公司 | Highlight traceless injection molding process for frame of back plate of highlight display |
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| CN112248359A (en) * | 2020-09-28 | 2021-01-22 | 徐君东 | Manufacturing process of directional reflective film |
| CN113650251A (en) * | 2021-07-12 | 2021-11-16 | 冠鸿光电科技(武汉)有限公司 | Highlight traceless injection molding process for frame of back plate of highlight display |
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