CN105605195A - Plastic synchronous pulley and manufacturing process thereof - Google Patents
Plastic synchronous pulley and manufacturing process thereof Download PDFInfo
- Publication number
- CN105605195A CN105605195A CN201610155207.5A CN201610155207A CN105605195A CN 105605195 A CN105605195 A CN 105605195A CN 201610155207 A CN201610155207 A CN 201610155207A CN 105605195 A CN105605195 A CN 105605195A
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- CN
- China
- Prior art keywords
- synchronous pulley
- plastics
- main body
- pulley main
- mould
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H55/00—Elements with teeth or friction surfaces for conveying motion; Worms, pulleys or sheaves for gearing mechanisms
- F16H55/02—Toothed members; Worms
- F16H55/17—Toothed wheels
- F16H55/171—Toothed belt pulleys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C45/00—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
- B29C45/14—Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor incorporating preformed parts or layers, e.g. injection moulding around inserts or for coating articles
- B29C45/1459—Coating annular articles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Pulleys (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a plastic synchronous pulley and a manufacturing process thereof, belongs to the technical field of mechanical transmission parts, and particularly relates to the plastic synchronous pulley and the manufacturing process thereof which are applied by photovoltaic solar cell module transmission equipment and a production line thereof. The invention provides the plastic synchronous pulley which is low in cost. The plastic synchronous pulley is characterized in that a metal centering sleeve is included, a plastic synchronous pulley body is arranged outside the metal centering sleeve, and blocking plates are arranged on the two sides of the plastic synchronous pulley body respectively. The invention further provides the manufacturing process of the plastic synchronous pulley, it can be guaranteed that the plastic synchronous pulley is high in tooth form precision and small in deformation, and the consistency of synchronous pulley assembling can be guaranteed. The manufacturing process of the plastic synchronous pulley is characterized in that the metal centering sleeve is arranged in a prefabricated belt pulley forming mold, and nylon materials are injected into the prefabricated belt pulley forming mold; a prefabricated member is obtained after cooling is conducted.
Description
Technical field
The invention belongs to mechanical transmission component technical field. Relate in particular to the applied plastics synchronous pulley of a kind of photovoltaic solar cell assembly transmission equipment and production line thereof and manufacture craft thereof.
Background technology
Synchronous pulley is the common parts in machine driving, almost employing aluminum alloy materials without exception is made through machining for a long time, will adopt such as the technique such as gear hobbing or gear shaping, shaving processing technology complexity in process, cost is high, has strengthened the cost of automation drive disk assembly.
And in order to reduce automation drive disk assembly cost, those skilled in the art attempt to utilize the method for mold injects moulding to produce plastics synchronous pulley. But, in plastics synchronous pulley forming process, exist profile of tooth and spoke to shrink unequal technological problems, final products have the problem of the precision such as size and form and position tolerance thereof misalignment, cause using.
In addition, in order to realize the sealing rib of synchronous pulley, also need to adopt complicated mould structure to carry out die sinking, reduced the service life of mould. Owing to limited by mould structure, the necessary exposed external reinforced rib of the spoke of synchronous pulley, forms very inaesthetic protruding, concave space, causes the dead angle that stores dust.
More than the circular runout of the synchronous pulley of regular injection moulding only can be controlled at 0.3mm; Often there is the noise of screaming in synchronous pulley teeth, affects transmission effect in engaging with Timing Belt tooth, sound very uncomfortable.
Its shrinkage ratio of synchronous pulley dowel hole or dead eye is difficult to control, and assembling uniformity is difficult to ensure.
Summary of the invention
The present invention is exactly for the problems referred to above, and a kind of plastics synchronous pulley with low cost is provided.
In order to realize above-mentioned purpose of the present invention, the present invention adopts following technical scheme, and plastics synchronous pulley of the present invention, is characterized in that: comprise metal centring sleeve, metal centring sleeve is outside equipped with plastics synchronous pulley main body, and the both sides of plastics synchronous pulley main body are provided with catch.
The present invention also provides one can ensure that plastics synchronous pulley profile of tooth precision is high, it is little to be out of shape, and can ensure that synchronous pulley assembles conforming plastics synchronous pulley manufacture craft.
The manufacture craft of plastics synchronous pulley of the present invention, is characterized in that: step 1: a metal centring sleeve is arranged in prefabricated band wheel shaping mould, to injection nylon material in prefabricated band wheel shaping mould; After cooling, obtain plastics belt wheel prefabricated component.
Step 2: described plastics belt wheel prefabricated component is arranged in synchronous pulley main body mould, and the each portion size in described synchronous pulley main body mould is all greater than interior each portion size of prefabricated band wheel shaping mould; To injection nylon material in synchronous pulley main body mould, nylon material is full by the gap filling between plastics belt wheel prefabricated component and synchronous pulley main body mould, obtains plastics synchronous pulley main body after cooling.
Step 3: at plastics synchronous pulley main body both sides welding catch.
Preferably, the inside dimension of described synchronous pulley main body mould is all greater than the inside dimension 1mm～4mm of prefabricated band wheel shaping mould.
Preferably, in step 1, injection pressure is 6MPa～12MPa; Injection temperature is between 190 DEG C～260 DEG C; Be 10 seconds～60 seconds preliminary cool time, fully cooling, the sizing through at least 24 hours again after injection moulding.
Preferably, in step 2, the temperature of injection is 200 DEG C～260 DEG C, and be 5 seconds～11 seconds inject time, injection pressure 7MPa～14MPa, and be 15 seconds～60 seconds cool time.
Preferably, in step 2, the feeding manner of synchronous pulley main body mould adopts spot pouring mouth.
Preferably, in step 1 and step 2, in nylon material, add molybdenum bisuphide.
Preferably, in step 3, welded by ultrasonic welding process between plastics synchronous pulley main body and catch.
Beneficial effect of the present invention: 1, the present invention is provided with metal centring sleeve, in assembling process, can ensure the quality of fit of synchronous pulley dowel hole or dead eye and power transmission shaft. Improve assembling uniformity, interchangeability and maintainability, significantly improved the service life of synchronous pulley.
2, the present invention first processes the plastics belt wheel prefabricated component that each portion size is all less than final molding size 1mm～4mm on prefabricated band wheel shaping mould with nylon material, pass through again double injection molding method, avoid product moulding after-contraction uneven and affect the problem of the precision of moulding, reduced process distortions amount.
3, the present invention is because the each portion of plastics belt wheel prefabricated component size such as reserves at the quantity space, avoid after synchronous pulley final molding, because wall unevenness produces the phenomenon that distortion under common process state and amount of contraction differ, each portion size and form and position tolerance after workpiece final molding are ensured.
4, the present invention has increased molybdenum bisuphide in nylon material, after the moulding of plastics synchronous pulley, can prevent from engaging noise, improves the self-lubricity of engagement, increases the service life.
5, the present invention adopts the method for ultrasonic bonding, catch and plastics synchronous pulley main body are welded as to a firmly entirety, because ultrasonic bonding is that two contact-making surfaces of workpiece produce friction, the temperature of contact-making surface can reach between 200 DEG C～280 DEG C, make two contact surface fusings and be welded as a whole securely, time used, between 10 seconds～45 seconds, can anyly not become flexible or cracking, meets product instructions for use.
Brief description of the drawings
Fig. 1 is the structural representation of plastics synchronous pulley of the present invention.
Fig. 2 is the exploded view of plastics synchronous pulley of the present invention.
Fig. 3 is the structural representation of plastics synchronous pulley double injection of the present invention.
In accompanying drawing, 1 is that plastics synchronous pulley main body, 2 is that catch, 3 is that spoke, 4 is that metal centring sleeve, 5 is that through hole, 6 is plastics belt wheel prefabricated component.
Detailed description of the invention
Plastics synchronous pulley of the present invention, is characterized in that: comprise metal centring sleeve 4, metal centring sleeve 4 is outside equipped with plastics synchronous pulley main body 1, and the both sides of plastics synchronous pulley main body 1 are provided with catch 2.
Described plastics synchronous pulley main body 1 both sides are provided with spoke 3, are provided with the through hole 5 coordinating with spoke 3 on described catch 2.
The present invention also provides one can ensure that plastics synchronous pulley profile of tooth precision is high, it is little to be out of shape, and can ensure that synchronous pulley assembles conforming plastics synchronous pulley manufacture craft.
The manufacture craft of plastics synchronous pulley of the present invention, step 1: a metal centring sleeve 4 is arranged in prefabricated band wheel shaping mould, to injection nylon material in prefabricated band wheel shaping mould; After cooling, obtain plastics belt wheel prefabricated component 6.
Step 2: described plastics belt wheel prefabricated component 6 is arranged in synchronous pulley main body mould, and the each portion size in described synchronous pulley main body mould is all greater than interior each portion size of prefabricated band wheel shaping mould; To injection nylon material in synchronous pulley main body mould, nylon material is full by the gap filling between plastics belt wheel prefabricated component 6 and synchronous pulley main body mould, obtains plastics synchronous pulley main body 1 after cooling.
Step 3: at plastics synchronous pulley main body 1 both sides welding catch 2.
Preferably, the inside dimension of described synchronous pulley main body mould is all greater than the inside dimension 1mm～4mm of prefabricated band wheel shaping mould.
The inner surface of described synchronous pulley main body mould equates to the distance between plastics belt wheel prefabricated component outer surface everywhere.
Preferably, in step 1, injection pressure is 6MPa～12MPa; Injection temperature is between 190 DEG C～260 DEG C; Be 10 seconds～60 seconds preliminary cool time, fully cooling, the sizing through 24 hours～30 hours again after injection moulding.
Preferably, in step 2, the temperature of injection is 200 DEG C～260 DEG C, and be 5 seconds～11 seconds inject time, injection pressure 7MPa～14MPa, and be 15 seconds～60 seconds cool time.
Preferably, in step 2, the feeding manner of synchronous pulley main body mould adopts spot pouring mouth.
Preferably, in step 1 and step 2, in nylon material, add molybdenum bisuphide.
Preferably, in step 3, welded by ultrasonic welding process between plastics synchronous pulley main body 1 and catch 2.
Be understandable that, above about specific descriptions of the present invention, only for being described, the present invention is not limited to the described technical scheme of the embodiment of the present invention, those of ordinary skill in the art is to be understood that, still can modify or be equal to replacement the present invention, to reach identical technique effect; Use needs as long as meet, all within protection scope of the present invention.
Claims (10)
1. a plastics synchronous pulley, is characterized in that: comprise metal centring sleeve (4), metal centring sleeve (4) is outside equipped with plastics synchronous pulley main body (1), and the both sides of plastics synchronous pulley main body (1) are provided with catch (2).
2. a kind of plastics synchronous pulley according to claim 1, is characterized in that: described plastics synchronous pulley main body (1) both sides are provided with spoke (3), is provided with the through hole (5) coordinating with spoke (3) on described catch (2).
3. a manufacture craft for plastics synchronous pulley as claimed in claim 1 or 2, is characterized in that: step 1: a metal centring sleeve (4) is arranged in prefabricated band wheel shaping mould, to injection nylon material in prefabricated band wheel shaping mould; After cooling, obtain plastics belt wheel prefabricated component (6);
Step 2: described plastics belt wheel prefabricated component 6 is arranged in synchronous pulley main body mould, and the each portion size in described synchronous pulley main body mould is all greater than interior each portion size of prefabricated band wheel shaping mould; To injection nylon material in synchronous pulley main body mould, nylon material is full by the gap filling between plastics belt wheel prefabricated component (6) and synchronous pulley main body mould, obtains plastics synchronous pulley main body (1) after cooling;
Step 3: at plastics synchronous pulley main body 1 both sides welding catch 2.
4. the manufacture craft of plastics synchronous pulley according to claim 3, is characterized in that: the inside dimension of described synchronous pulley main body mould is all greater than the inside dimension 1mm～4mm of prefabricated band wheel shaping mould.
5. the manufacture craft of plastics synchronous pulley according to claim 4, is characterized in that: the inner surface of described synchronous pulley main body mould equates to the distance between plastics belt wheel prefabricated component outer surface everywhere.
6. the manufacture craft of plastics synchronous pulley according to claim 3, is characterized in that: in step 1, injection pressure is 6MPa～12MPa; Injection temperature is between 190 DEG C～260 DEG C; Be 10 seconds～60 seconds preliminary cool time, fully cooling, the sizing through 24 hours～30 hours again after injection moulding.
7. the manufacture craft of plastics synchronous pulley according to claim 3, is characterized in that: in step 2, the temperature of injection is 200 DEG C～260 DEG C, and be 5 seconds～11 seconds inject time, injection pressure 7MPa～14MPa, and be 15 seconds～60 seconds cool time.
8. the manufacture craft of plastics synchronous pulley according to claim 3, is characterized in that: in step 2, the feeding manner of synchronous pulley main body mould adopts spot pouring mouth.
9. the manufacture craft of plastics synchronous pulley according to claim 3, is characterized in that: in step 1 and step 2, add molybdenum bisuphide in nylon material.
10. the manufacture craft of plastics synchronous pulley according to claim 3, is characterized in that: in step 3, welded by ultrasonic welding process between plastics synchronous pulley main body (1) and catch (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610155207.5A CN105605195B (en) | 2016-03-18 | 2016-03-18 | A kind of manufacture craft of plastics synchronous pulley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610155207.5A CN105605195B (en) | 2016-03-18 | 2016-03-18 | A kind of manufacture craft of plastics synchronous pulley |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105605195A true CN105605195A (en) | 2016-05-25 |
| CN105605195B CN105605195B (en) | 2018-06-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610155207.5A Active CN105605195B (en) | 2016-03-18 | 2016-03-18 | A kind of manufacture craft of plastics synchronous pulley |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1730557A (en) * | 2005-09-12 | 2006-02-08 | 上海汽车集团股份有限公司 | Resin and plastic belt pulley and its manufacturing method |
| CN202360713U (en) * | 2011-07-01 | 2012-08-01 | 宣城市金威汽车零部件有限责任公司 | Synchronous pulley for vehicle |
| CN202579933U (en) * | 2012-02-27 | 2012-12-05 | 浙江中益机械有限公司 | Synchronous pulley |
| CN105134914A (en) * | 2015-07-14 | 2015-12-09 | 江阴新长机械配件有限公司 | Synchronous pulley with flange |
| US20160016368A1 (en) * | 2014-07-16 | 2016-01-21 | Jtekt Corporation | Gear and manufacturing method thereof |
| CN205479239U (en) * | 2016-03-18 | 2016-08-17 | 营口金辰机械股份有限公司 | Plastics synchronous pulley |
-
2016
- 2016-03-18 CN CN201610155207.5A patent/CN105605195B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1730557A (en) * | 2005-09-12 | 2006-02-08 | 上海汽车集团股份有限公司 | Resin and plastic belt pulley and its manufacturing method |
| CN202360713U (en) * | 2011-07-01 | 2012-08-01 | 宣城市金威汽车零部件有限责任公司 | Synchronous pulley for vehicle |
| CN202579933U (en) * | 2012-02-27 | 2012-12-05 | 浙江中益机械有限公司 | Synchronous pulley |
| US20160016368A1 (en) * | 2014-07-16 | 2016-01-21 | Jtekt Corporation | Gear and manufacturing method thereof |
| CN105134914A (en) * | 2015-07-14 | 2015-12-09 | 江阴新长机械配件有限公司 | Synchronous pulley with flange |
| CN205479239U (en) * | 2016-03-18 | 2016-08-17 | 营口金辰机械股份有限公司 | Plastics synchronous pulley |
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| Publication number | Publication date |
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| CN105605195B (en) | 2018-06-26 |
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