CN102518775A - High-performance plastic gear and manufacturing method thereof - Google Patents
High-performance plastic gear and manufacturing method thereof Download PDFInfo
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- CN102518775A CN102518775A CN2011103745915A CN201110374591A CN102518775A CN 102518775 A CN102518775 A CN 102518775A CN 2011103745915 A CN2011103745915 A CN 2011103745915A CN 201110374591 A CN201110374591 A CN 201110374591A CN 102518775 A CN102518775 A CN 102518775A
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Abstract
The invention discloses a high-performance plastic gear and a manufacturing method of the high-performance plastic gear. The method comprises the following steps of: adding dried raw materials after proportioning into a heated injection molding machine, setting injection pressures, speeds, injection times and injection glue amounts of the injection molding machine in different stages and setting the final holding pressure and holding speed simultaneously to achieve the optimal injection molding process, and finally, obtaining an qualified product. According to the invention, the defects of physical properties of easiness in white spotting and fracture, poor toughness, low strength and the like of the high-performance plastic gear obtained by injection molding in molding are solved, the injection molding process has high stability, the obtained product has stable quality, the production efficiency is improved and the production cost is reduced.
Description
Background technique
The present invention relates to a kind of high performance plastics gear and production method thereof, belong to machinery manufacturing technology field.
Background technique
Plastic gear just develops towards bigger size, more complicated geometrical shape, more high-intensity direction; The composite material of high performance resin and roving glass fiber filling has simultaneously played important impetus; Plastic gear 50 years back warps have in the past been gone through a variation course from new material to important industrial materials; Today, they were deep in many different applications; Like automobile, wrist-watch, sewing machine, structure control facility and guided missile etc., play the effect of transmitting torque and forms 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 existing technology; The object of the present invention is to provide a kind of high performance plastics gear and production method thereof; The high performance plastics gear product when moulding that the invention solves molding and forming is prone to and draws physical property defectives such as white, fracture, poor toughness, intensity be low, this Shooting Technique stability simultaneously, products obtained therefrom steady quality; Improve manufacturing efficiency, reduced cost of production.
The present invention adopts following technological scheme to achieve these goals:
The high performance plastics gear is characterized in that its constitutive material comprises composition A and composition B, described composition A: nylon 66 45-55 parts and nylon 66+30%GF 45-55 part; Composition B: glass fibre 40-50 part, short fibre 10-15 part, polyester resin 5-10 part, polymethyl-benzene olefin(e) acid methyl esters 5-10 part, zine oxide 5-10 part, gesso 5-10 part, aluminium oxide 5-10 part, organosilicon 3-5 part, teflon 5-15 part, paraffin 5-10 part, organic carbon 3-5 part, attapulgite 5-10 part and silicious marl 2-3 part.
The production method of described high performance plastics gear is characterized in that may further comprise the steps:
(1) with carrying out drying process 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 portion by composition B raw material takes by weighing each raw material, carries out drying process, 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 machine is sent in two groups of drying is good raw material mixing;
(4) temperature of injection machine bringing-up section 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 low speed 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 low speed 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 high performance plastics gear product when moulding that the invention solves molding and forming is prone to and draws physical property defectives such as white, fracture, poor toughness, intensity be low; This Shooting Technique is stable simultaneously; The products obtained therefrom steady quality has improved manufacturing efficiency, has reduced cost of production.
Embodiment
Embodiment 1: high performance plastics gear, its constitutive material comprise composition A and composition B, described composition A: 45 parts of 66 45 parts of nylon and nylon 66+30%GF; Composition B: 2 parts in 40 parts in glass fibre, 10 parts on short fibre, 5 parts in polyester resin, 5 parts of polymethyl-benzene olefin(e) acid methyl esters, 5 parts in zine oxide, 5 parts of gessos, 5 parts in aluminium oxide, 3 parts of organosilicons, 5 parts of teflon, 5 parts in paraffin, 3 parts of organic carbons, 5 parts of attapulgites and silicious marl.
The production method of high performance plastics gear may further comprise the steps:
(1) with carrying out drying process 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 portion by composition B raw material takes by weighing each raw material, carries out drying process, 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 machine is sent in two groups of drying is good raw material mixing;
(4) temperature of injection machine bringing-up section 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 low speed 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 low speed 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: high performance plastics gear, its constitutive material comprise composition A and composition B, described composition A: 55 parts of 66 55 parts of nylon and nylon 66+30%GF; Composition B: 3 parts in 50 parts in glass fibre, 15 parts on short fibre, 10 parts in polyester resin, 10 parts of polymethyl-benzene olefin(e) acid methyl esters, 10 parts in zine oxide, 10 parts of gessos, 10 parts in aluminium oxide, 5 parts of organosilicons, 15 parts of teflon, 10 parts in paraffin, 5 parts of organic carbons, 10 parts of attapulgites and silicious marl.
The production method of high performance plastics gear may further comprise the steps:
(1) with carrying out drying process 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 portion by composition B raw material takes by weighing each raw material, carries out drying process, 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 machine is sent in two groups of drying is good raw material mixing;
(4) temperature of injection machine bringing-up section 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 low speed 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 low speed 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 high performance plastics gear that the present invention makes:
Claims (2)
1. a high performance plastics gear is characterized in that its constitutive material comprises composition A and composition B, described composition A: nylon 66 45-55 parts and nylon 66+30%GF 45-55 part; Composition B: glass fibre 40-50 part, short fibre 10-15 part, polyester resin 5-10 part, polymethyl-benzene olefin(e) acid methyl esters 5-10 part, zine oxide 5-10 part, gesso 5-10 part, aluminium oxide 5-10 part, organosilicon 3-5 part, teflon 5-15 part, paraffin 5-10 part, organic carbon 3-5 part, attapulgite 5-10 part and silicious marl 2-3 part.
2. the production method of a high performance plastics gear as claimed in claim 1 is characterized in that may further comprise the steps:
(1) with carrying out drying process 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 portion by composition B raw material takes by weighing each raw material, carries out drying process, 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 machine is sent in two groups of drying is good raw material mixing;
(4) temperature of injection machine bringing-up section 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 low speed 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 low speed 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 |
|---|---|---|---|
| CN2011103745915A CN102518775A (en) | 2011-11-23 | 2011-11-23 | High-performance plastic gear and manufacturing method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103745915A CN102518775A (en) | 2011-11-23 | 2011-11-23 | High-performance plastic gear and manufacturing method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN102518775A true CN102518775A (en) | 2012-06-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103745915A Pending CN102518775A (en) | 2011-11-23 | 2011-11-23 | High-performance plastic gear and manufacturing method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103881376A (en) * | 2014-03-27 | 2014-06-25 | 苏州益群模具有限公司 | High-intensity injection moulded plastic part material |
| CN104071675A (en) * | 2014-07-18 | 2014-10-01 | 江苏利德尔塑化科技股份有限公司 | Elevator nylon rope wheel device |
-
2011
- 2011-11-23 CN CN2011103745915A patent/CN102518775A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103881376A (en) * | 2014-03-27 | 2014-06-25 | 苏州益群模具有限公司 | High-intensity injection moulded plastic part material |
| CN104071675A (en) * | 2014-07-18 | 2014-10-01 | 江苏利德尔塑化科技股份有限公司 | Elevator nylon rope wheel device |
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Application publication date: 20120627 |