CN1063126C - Injection shaping tech. and process method of balance shaft gear - Google Patents
Injection shaping tech. and process method of balance shaft gear Download PDFInfo
- Publication number
- CN1063126C CN1063126C CN96120573A CN96120573A CN1063126C CN 1063126 C CN1063126 C CN 1063126C CN 96120573 A CN96120573 A CN 96120573A CN 96120573 A CN96120573 A CN 96120573A CN 1063126 C CN1063126 C CN 1063126C
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- injection moulding
- gear
- injection
- running channel
- tooth
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- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The present invention relates to injection molding technology used for balance shaft gear components (nylon gears) on an automobile and a processing method. A right amount of 00 level MoS2, carbon black and a toughening agent are added in nylon 66 material for modification processing. The injection molding to gear hubs and gear rings can be carried out in a graded mode. An injection mould adopts an edge gate crossed annular membrane-shaped gate for feeding, the feeding is uniform, and the filling performance is good. Because the material of gears is processed by modification, the properties of the material, such as tensile strength, etc., are enhanced. Inserting moulding technology and after-treatment technology, such as stabilizing treatment, annealing treatment, etc., are adopted on injection molding technology, and the uniformity and the compactness of the internal structure are ensured.
Description
The present invention relates to a kind of injection molding process and processing method that is used for balance shaft gear assembly (nylon gear) on the automobile.
The balance shaft gear assembly is to turn to purpose with the low noise that car travels as the parts of car transmissions, so the material multiselect nylon fiber composite of gear.Nylon has the high temperature fatigue durability, the anti-repeated stock of low temperature, but in processing method in the past, mostly be to adopt on the short fiber sizing material compression molding or put the cog belt that one deck is made up of resin and fortifying fibre along the gear tooth surface, fiber cloth will be identical with the gear length and width, that soaked resin is folded into cog belt, inserts then in the mould of pressing mold gear ring, again gear ring is inserted in the mould, add spoke material, fine finishining is carried out in the compression molding of heating again after the demoulding; Improve the strength character of gear with this processing method.Though the gear that this kind processing method processes strengthens on the intensity of gear tooth and durability to some extent,, still not ideal enough, move tens hours in reliability test after, the life cycle of gear just occurs rupturing.
The objective of the invention is, a kind of strength character that improves balance shaft gear with the process of quadric injection mould moulding is provided.
Technical solution of the present invention is with car, grinds, mills the processing axle sleeve; Selecting content of glass fiber for use is 40～50% glass nylon 66 (70G43L), adds 00 grade of an amount of MoS
2, carbon black and flexibilizer carries out modification and handles, injection moulding tooth base then; The injection moulding of tooth base divides secondary to carry out, first injection moulding tooth hub, injection moulding gear ring again; The tooth hub carries out injection moulding with different moulds respectively with gear ring, and mould adopts the structural design of edge gate+annular membrane gate charging; Its Shooting Technique is respectively:
A blank Shooting Technique parameter (both tooth hub injection mouldings):
240-270 ℃ of barrel temperature back segment
Stage casing 250-260 ℃
Leading portion 260-290 ℃
The 40-70% of nozzle front-end temperature
Mold temperature 20-90 ℃
Injection cycle injection moulding 5-20S
Pressurize 5-30S
Cooling 10-40S
One section 60-80% of injection pressure
Two sections 40-60%
Pressurize 30-50%
Post-processing temperature 80-120 ℃
Time 2-4H
Secondary blank Shooting Technique parameter (both gear ring injection mouldings):
240-270 ℃ of barrel temperature back segment
Stage casing 250-280 ℃
Leading portion 260-290 ℃
The 40-70% of nozzle front-end temperature
Mold temperature 20-90 ℃
Injection cycle injection moulding 5-30S
Pressurize 10-40S
Cooling 10-50S
One section 60-90% of injection pressure
Two sections 50-80%
Three sections 40-70%
Pressurize 30-60%
Post-processing temperature 60-120 ℃
Time 2-4H
Medium silicone oil
Advantage of the present invention is: general glass nylon material is carried out modification handle, make the performances such as hot strength of material strengthen; Adopted side gate to add annular membrane gate charging in the mould design, charging is even, and fillibility is good, and mould has also designed cooling, heater, has improved the compactness of filling, and can also the preformed profile of tooth; On Shooting Technique, we use the full-automatic injection moulding machine injection mo(u)lding of computer, use the molded technology of embedding, adopt aftertreatment technologys such as stable processing and annealing in process, both guarantee uniformity, the compactness of internal structure, guaranteed the super toughness and the high-intensity performance of gear again.Make the reliability operation test reach 400 hours (being equivalent to nearly 100,000 kilometers road performance test).
Fig. 1 is a tooth hub injection mold schematic diagram of the present invention;
Fig. 2 is a gear ring injection mold schematic diagram of the present invention;
Fig. 3 is a sprue bush schematic diagram of the present invention;
Fig. 4 is the top view of Fig. 3.
Tooth hub injection mold is by cover half part, die cavity part, dynamic model part and eject resetting-mechanism and form, and wherein installing plate 9 and mold member 8 have fixedly constituted the cover half part by screw 10; In die cavity part, core 7 is embedded on the movable mold member 6, constitutes the die cavity part with mold member 8, and making die cavity is the integral body formula structure of inserting; Movable mold member 6, support plate member 5, cushion block spare 4 and dynamic model installation plate 1 are fixed together by screw 18 and have constituted the dynamic model part; Dynamic model and cover half part both be the die joint of mould in contact-making surface punishment type.The resetting-mechanism that ejects of mould is made up of push pedal 2, pusher plate 3, push rod 12,13, release link 17, and ejecting mechanism ejects product behind the mould somatotype, and the guide-localization of mould is finished by guide pillar 16,11.When mould is closed, reset by release link, guide pillar is guide-localization exactly, enters next do action.Sprue bush 14 is by main running channel 37 and divide running channel 38,39 to form, and each divides running channel that a side gate 40 is arranged, and melt injects by main running channel 37 and divides running channel 38,39, charges into die cavity by side gate 40 and ring membrane gate 41 then.
The gear ring injection mold is by cover half, die cavity, dynamic model and eject resetting-mechanism and form, and solid plate 25 both had been the cover half part; Core assembly 35, core 30 have constituted the die cavity part with moving platen 24, and making die cavity is the whole die cavity of inserted dynamic model; Dynamic model partly is made up of with base plate 32 moving platen 24, core print 23, backing plate 21, support ring 29, and is fixing through screw 28.The mould die joint is partly to pass through the contact-making surface somatotype by moving, cover half; After injection moulding is finished, the resetting-mechanism that ejects that is made of push pedal 26, pusher plate 27, push rod 37 and 20, release link 22 and bearing ejects product is rotary, subsequently, because the guide effect of guide pillar 34 and 31, make mould reset like clockwork, enter next do action.The version of the sprue bush 35 of this mould is identical with the architectural feature of the sprue bush 14 of tooth hub injection mold.19 is heating collar, and 33 is stem stem.
Embodiment:
With car, grind, mill and process axle sleeve, axle sleeve is inserted in the mould of injection moulding tooth hub and prepares injection moulding;
2. be base material with 70G43L, add 00
*Level colloid MoS
2Pulvis 1～3%; Wear-resisting carbon black 0.5～1%; Flexibilizer 5～10% carries out the injection moulding first time then, and (injection moulding is an example with CJ-80NC II equipment only) molding technique parameter is:
Barrel temperature: 240 ℃ of back segments
260 ℃ in stage casing
270 ℃ of leading portions
45% of nozzle front-end temperature
Mold temperature: 40-50 ℃
Injection cycle: injection moulding 6S
8S to be pressed
Cooling 15S
Injection pressure: one section 75%
Two section 60%
Pressurize 35%
Post processing: 90 ℃ of temperature
Time 2H
Medium air is carried out the injection moulding second time (injection moulding is an example with CJ-150NC II equipment only) then, and molding technique parameter is:
Barrel temperature: 260 ℃ of back segments
270 ℃ in stage casing
290 ℃ of leading portions
45% of nozzle front-end temperature
Mold temperature: 70-80 ℃
Injection cycle: injection moulding 8S
12S to be pressed
Cooling 20S
Injection pressure: one section 88%
Two section 75%
Three section 65%
Pressurize 45%
Post processing: 95 ℃ of temperature
Time 2H
Medium silicone oil
3. carry out Gear Processing: finish turning tooth base, gear hobbing, draw key, boring; Gear Processing is finished.
Claims (1)
1, a kind of injection molding process and processing method of the balance shaft gear that is formed by axle sleeve processing, injection moulding tooth base, tooth fine finishining is characterized in that, be 40～50% glass nylon with content of glass fiber through add total amount of material 1～3% 00
#Level colloid MoS
2Pulvis, 0.5～1% carbon black and 5～10% flexibilizer are done modification and are handled, and carry out the injection moulding of tooth base at twice on the axle sleeve that has machined, first injection moulding tooth hub, injection moulding gear ring again; The tooth hub carries out injection moulding with different moulds respectively with gear ring, the sprue bush of mould is divided into main running channel, divides running channel and ring membrane gate four parts, melt injects and divides running channel after main running channel enters, and charges into die cavity by side gate on minute running channel and ring membrane gate then; Core is embedded on the movable mold member, makes die cavity become the dynamic model integral body formula cavity structure of inserting, and then does gear fine finishining.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96120573A CN1063126C (en) | 1996-11-20 | 1996-11-20 | Injection shaping tech. and process method of balance shaft gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN96120573A CN1063126C (en) | 1996-11-20 | 1996-11-20 | Injection shaping tech. and process method of balance shaft gear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1158293A CN1158293A (en) | 1997-09-03 |
| CN1063126C true CN1063126C (en) | 2001-03-14 |
Family
ID=5126426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96120573A Expired - Fee Related CN1063126C (en) | 1996-11-20 | 1996-11-20 | Injection shaping tech. and process method of balance shaft gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1063126C (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101282370B (en) * | 2007-04-04 | 2011-05-18 | 比亚迪股份有限公司 | Mobile phone shell and preparation method thereof |
| CN101994691A (en) * | 2010-09-30 | 2011-03-30 | 张良 | Gear pump liquid supercharging equipment, and production process and application thereof |
| CN102179898B (en) * | 2011-03-04 | 2013-01-30 | 慈溪市盛艺模具有限公司 | Double-material die of small plastic parts and forming method of die |
| CN102390097A (en) * | 2011-08-09 | 2012-03-28 | 常熟市慧丰塑料制品有限公司 | Machining process of reinforced nylon plastic PA6 |
| CN102516758B (en) * | 2011-11-23 | 2014-03-05 | 安徽宜万丰电器有限公司 | Plastic gear and manufacturing method thereof |
| CN103159015A (en) * | 2011-12-14 | 2013-06-19 | 姚本林 | Transmission wheel and manufacturing method thereof |
| CN104976320B (en) * | 2015-07-16 | 2018-01-30 | 三明索富泵业有限公司 | The Mini gear pump gear train and gear working method of a kind of working stability |
| CN105134878A (en) * | 2015-09-28 | 2015-12-09 | 三明索富泵业有限公司 | Gear set for minitype gear pump and gear machining method |
| CN109435169A (en) * | 2018-12-28 | 2019-03-08 | 大连銮艺精密模塑制造有限公司 | Gear die equipped with multijaw cast gate |
| CN112893802A (en) * | 2019-12-03 | 2021-06-04 | 广东赛肯科技创新股份有限公司 | Die casting machine for fluted disc machining and fluted disc die casting method thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04267131A (en) * | 1991-02-22 | 1992-09-22 | Izumi Ind Ltd | Gear connecting method |
-
1996
- 1996-11-20 CN CN96120573A patent/CN1063126C/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04267131A (en) * | 1991-02-22 | 1992-09-22 | Izumi Ind Ltd | Gear connecting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1158293A (en) | 1997-09-03 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20010314 |