CN102516760A - Low-cost plastic gear and manufacturing method thereof - Google Patents
Low-cost plastic gear and manufacturing method thereof Download PDFInfo
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- CN102516760A CN102516760A CN2011103746034A CN201110374603A CN102516760A CN 102516760 A CN102516760 A CN 102516760A CN 2011103746034 A CN2011103746034 A CN 2011103746034A CN 201110374603 A CN201110374603 A CN 201110374603A CN 102516760 A CN102516760 A CN 102516760A
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Abstract
The invention discloses a low-cost plastic gear and a manufacturing method thereof. The method mainly comprises the following steps of: adding dried and proportioned raw materials into a heated injection molding machine; and achieving the best injection molding process by setting injection pressure, speed, injection time and injection volume of different sections of the injection molding machine and meanwhile setting final holding pressure and holding speed to obtain a final acceptable product. According to the invention, the physical performance defects of high probability of drag mark, fracture, poor toughness, low strength and the like of the product during molding of the injection molded low-cost plastic gear are overcome; meanwhile, the injection molding process is stable; the obtained product is stable in quality; the production efficiency is increased; and the production cost is reduced.
Description
Background technology
The present invention relates to a kind of low-cost plastic gear and method of manufacture thereof, belong to machinery manufacturing technology field.
Background technology
Plastic gear just develops towards bigger size, more complicated geometrical shape, more high-intensity direction; The matrix material of performance resins and roving glass fiber filling has simultaneously played important pushing effect; Plastic gear 50 years back warps have in the past been gone through a variation course from type material to important Industrial materials; Today, they were deep in many different Application Areass; Like automobile, wrist-watch, sewing machine, structure control facility and guided missile etc., play the effect of transmitting moment of torsion and mode of motion.
More advanced plastic gear forming method is developed, like the double injection molding method, through elastomeric method of design between the wheel shaft and the gear teeth; It is quieter that gear is moved; When gear shut down suddenly, absorbed oscillation avoided the gear teeth to damage preferably.
Summary of the invention
For deficiency and the defective of alleviating prior art; The object of the present invention is to provide a kind of low-cost plastic gear and method of manufacture thereof; The low-cost plastic gear product when moulding that the invention solves injection moulding is prone to and draws physicals defectives such as white, fracture, poor toughness, intensity be low, this Shooting Technique stability simultaneously, products obtained therefrom steady quality; Improve production efficiency, reduced production cost.
The present invention adopts following technical scheme to achieve these goals:
Low-cost plastic gear is characterized in that its constitutive material comprises compsn A and compsn B, described compsn A: nylon 6645-55 part and nylon 66+30%GF 45-55 part; Compsn B: trevira 20-35 part, vibrin 5-10 part, polyphenylmethyl olefin(e) acid methyl esters 5-10 part, cats product 3-5 part, terra alba 5-10 part, aluminum oxide 5-10 part, Triple Pressed Stearic Acid 3-8 part, organosilicon 3-5 part, tetrafluoroethylene 5-15 part, paraffin 5-10 part, organic carbon 3-5 part and zeyssatite 2-3 part.
The method of manufacture of described low-cost plastic gear is characterized in that may further comprise the steps:
(1) with carrying out drying treatment behind nylon 66 and the nylon 66+30%GF raw material ratio, drying temperature is 100-120 ℃, and be 4-6 hour time of drying, mixes, and adds dryer, dries 24-28h down at 140-160 ℃;
(2) weight part by compsn B raw material takes by weighing each raw material, carries out drying treatment, and drying temperature is 120-150 ℃, and be 3-5 hour time of drying, mixes, and adds dryer, dries 24-28h down at 140-160 ℃;
(3) injection moulding machine is sent in two groups of drying is good starting material mixing;
(4) temperature of injection moulding machine heating zone is set: first section 290 ± 5 ℃, second section 285 ± 5 ℃, the 3rd section 280 ± 5 ℃, the 4th section 275 ± 5 ℃, the 5th section 260 ± 5 ℃;
(5) injection moulding section molding technique parameter:
The lower velocity injection of the middle pressure of a, first section employing 65-70Mpa, 40-50m/s, be 1.0-1.5 second inject time, the 78-80% of injection glue amount to product;
The lower velocity injection of the middle pressure of b, second section employing 60-80Mpa, 25-35m/s, be 1.0-1.5 second inject time, injection glue amount is to 100% of the product mouth of a river;
(6) moulding, the demoulding.
Beneficial effect of the present invention:
The low-cost plastic gear product when moulding that the invention solves injection moulding is prone to and draws physicals defectives such as white, fracture, poor toughness, intensity be low; This Shooting Technique is stable simultaneously; The products obtained therefrom steady quality has improved production efficiency, has reduced production cost.
Embodiment
Embodiment 1: low-cost plastic gear, its constitutive material comprise compsn A and compsn B, described compsn A: 45 parts of 6645 parts of nylon and nylon 66+30%GF; Compsn B: 2 parts in 20 parts on trevira, 5 parts in vibrin, 5 parts of polyphenylmethyl olefin(e) acid methyl esters, 3 parts of cats products, 5 parts of terra albas, 5 parts in aluminum oxide, 3 parts of Triple Pressed Stearic Acid, 3 parts of organosilicons, 5 parts of tetrafluoroethylene, 5 parts in paraffin, 3 parts of organic carbons and zeyssatite.
The method of manufacture of low-cost plastic gear may further comprise the steps:
(1) with carrying out drying treatment behind nylon 66 and the nylon 66+30%GF raw material ratio, drying temperature is 100-120 ℃, and be 4-6 hour time of drying, mixes, and adds dryer, dries 24-28h down at 140-160 ℃;
(2) weight part by compsn B raw material takes by weighing each raw material, carries out drying treatment, and drying temperature is 120-150 ℃, and be 3-5 hour time of drying, mixes, and adds dryer, dries 24-28h down at 140-160 ℃;
(3) injection moulding machine is sent in two groups of drying is good starting material mixing;
(4) temperature of injection moulding machine heating zone is set: first section 290 ± 5 ℃, second section 285 ± 5 ℃, the 3rd section 280 ± 5 ℃, the 4th section 275 ± 5 ℃, the 5th section 260 ± 5 ℃;
(5) injection moulding section molding technique parameter:
The lower velocity injection of the middle pressure of a, first section employing 65-70Mpa, 40-50m/s, be 1.0-1.5 second inject time, the 78-80% of injection glue amount to product;
The lower velocity injection of the middle pressure of b, second section employing 60-80Mpa, 25-35m/s, be 1.0-1.5 second inject time, injection glue amount is to 100% of the product mouth of a river;
(6) moulding, the demoulding.
Embodiment 2: low-cost plastic gear, its constitutive material comprise compsn A and compsn B, described compsn A: 55 parts of 6655 parts of nylon and nylon 66+30%GF; Compsn B: 3 parts in 35 parts on trevira, 10 parts in vibrin, 10 parts of polyphenylmethyl olefin(e) acid methyl esters, 5 parts of cats products, 10 parts of terra albas, 10 parts in aluminum oxide, 8 parts of Triple Pressed Stearic Acid, 5 parts of organosilicons, 15 parts of tetrafluoroethylene, 10 parts in paraffin, 5 parts of organic carbons and zeyssatite.
The method of manufacture of low-cost plastic gear may further comprise the steps:
(1) with carrying out drying treatment behind nylon 66 and the nylon 66+30%GF raw material ratio, drying temperature is 100-120 ℃, and be 4-6 hour time of drying, mixes, and adds dryer, dries 24-28h down at 140-160 ℃;
(2) weight part by compsn B raw material takes by weighing each raw material, carries out drying treatment, and drying temperature is 120-150 ℃, and be 3-5 hour time of drying, mixes, and adds dryer, dries 24-28h down at 140-160 ℃;
(3) injection moulding machine is sent in two groups of drying is good starting material mixing;
(4) temperature of injection moulding machine heating zone is set: first section 290 ± 5 ℃, second section 285 ± 5 ℃, the 3rd section 280 ± 5 ℃, the 4th section 275 ± 5 ℃, the 5th section 260 ± 5 ℃;
(5) injection moulding section molding technique parameter:
The lower velocity injection of the middle pressure of a, first section employing 65-70Mpa, 40-50m/s, be 1.0-1.5 second inject time, the 78-80% of injection glue amount to product;
The lower velocity injection of the middle pressure of b, second section employing 60-80Mpa, 25-35m/s, be 1.0-1.5 second inject time, injection glue amount is to 100% of the product mouth of a river;
(6) moulding, the demoulding.
Embodiment 3: the Performance Detection of the low-cost plastic gear that the present invention makes:
Claims (2)
1. a low-cost plastic gear is characterized in that its constitutive material comprises compsn A and compsn B, described compsn A: nylon 66 45-55 parts and nylon 66+30%GF 45-55 part; Compsn B: trevira 20-35 part, vibrin 5-10 part, polyphenylmethyl olefin(e) acid methyl esters 5-10 part, cats product 3-5 part, terra alba 5-10 part, aluminum oxide 5-10 part, Triple Pressed Stearic Acid 3-8 part, organosilicon 3-5 part, tetrafluoroethylene 5-15 part, paraffin 5-10 part, organic carbon 3-5 part and zeyssatite 2-3 part.
2. the method for manufacture of a low-cost plastic gear as claimed in claim 1 is characterized in that may further comprise the steps:
(1) with carrying out drying treatment behind nylon 66 and the nylon 66+30%GF raw material ratio, drying temperature is 100-120 ℃, and be 4-6 hour time of drying, mixes, and adds dryer, dries 24-28h down at 140-160 ℃;
(2) weight part by compsn B raw material takes by weighing each raw material, carries out drying treatment, and drying temperature is 120-150 ℃, and be 3-5 hour time of drying, mixes, and adds dryer, dries 24-28h down at 140-160 ℃;
(3) injection moulding machine is sent in two groups of drying is good starting material mixing;
(4) temperature of injection moulding machine heating zone is set: first section 290 ± 5 ℃, second section 285 ± 5 ℃, the 3rd section 280 ± 5 ℃, the 4th section 275 ± 5 ℃, the 5th section 260 ± 5 ℃;
(5) injection moulding section molding technique parameter:
The middle pressure of a, first section employing 65-70 Mpa, the lower velocity injection of 40-50m/s, be 1.0-1.5 second inject time, the 78-80% of injection glue amount to product;
The middle pressure of b, second section employing 60-80 Mpa, the lower velocity injection of 25-35m/s, be 1.0-1.5 second inject time, injection glue amount is to 100% of the product mouth of a river;
(6) moulding, the demoulding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103746034A CN102516760A (en) | 2011-11-23 | 2011-11-23 | Low-cost plastic gear and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103746034A CN102516760A (en) | 2011-11-23 | 2011-11-23 | Low-cost plastic gear and manufacturing method thereof |
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| CN102516760A true CN102516760A (en) | 2012-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011103746034A Pending CN102516760A (en) | 2011-11-23 | 2011-11-23 | Low-cost plastic gear and manufacturing method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112673195A (en) * | 2018-09-07 | 2021-04-16 | 日立安斯泰莫株式会社 | Method for manufacturing rotary power transmission member |
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2011
- 2011-11-23 CN CN2011103746034A patent/CN102516760A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112673195A (en) * | 2018-09-07 | 2021-04-16 | 日立安斯泰莫株式会社 | Method for manufacturing rotary power transmission member |
| CN112673195B (en) * | 2018-09-07 | 2024-03-19 | 日立安斯泰莫株式会社 | Method for manufacturing rotary power transmission member |
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Application publication date: 20120627 |