CN103991164B - A kind of manufacture method of plastic air intake manifold - Google Patents
A kind of manufacture method of plastic air intake manifold Download PDFInfo
- Publication number
- CN103991164B CN103991164B CN201410209474.7A CN201410209474A CN103991164B CN 103991164 B CN103991164 B CN 103991164B CN 201410209474 A CN201410209474 A CN 201410209474A CN 103991164 B CN103991164 B CN 103991164B
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- China
- Prior art keywords
- rubber sleeve
- pressure
- air intake
- intake manifold
- overflow valve
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Classifications
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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
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
- Moulds For Moulding Plastics Or The Like (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention discloses a kind of manufacture method of plastic air intake manifold, first make one and the identical rubber sleeve of required inlet manifold cavity shape with elastomeric material; Again rubber sleeve is placed in the die cavity of inlet manifold injection mold; Before injection moulding, first by high-pressure hydraulic pump toward water-filling in rubber sleeve, make rubber sleeve expand into the size equal with the internal diameter of required plastic air intake manifold; Start toward injected plastic melt in mould, the hydraulic pressure in rubber sleeve rises immediately, and remains to equal with melt pressure; Injection moulding is complete, and after part cooling sizing, close high-pressure hydraulic pump, open mould, rubber sleeve draining pressure release, extracts out rubber sleeve from the inlet manifold of forming, obtains qualified plastic air intake manifold.Advantage of the present invention is: reduce inlet manifold in the energy consumption of production process and environmental pollution, and improve the flow rate of gas in inlet manifold, thus improve the fuel economy of engine.
Description
Technical field
The present invention relates to the inlet manifold for automobile engine, specifically a kind of take plastics as the manufacture method of the motor intake manifold of material.
Background technology
Inlet manifold (AutomotiveAirIntake, be called for short AIM) be one of key components and parts of automobile engine, major function distributes to each cylinder body of engine swimmingly after air and fuel oil Homogeneous phase mixing, is a complex structure, required precision is high, manufacture difficulty is large part.Traditionally, the material manufacturing inlet manifold is cast iron or aluminium alloy, but along with the requirement of automotive light weight technology development, industry starts to attempt adopting the engineering plastics (as the nylon66 fiber of glass fiber reinforcement, being called for short PA66+GF) that density is less to replace aluminium alloy to manufacture inlet manifold.
At present, the technique manufacturing inlet manifold mainly contains two kinds, and one is fusible core injection molding method, and two is welding fabrication methods after Split injection.The former principle first makes the inner chamber core of inlet manifold, then put it in mould, injected plastic melt in mould, the goods comprising ashbury metal core are taken out after cooling and shaping, put it into again in pyrosol and core is heated until ashbury metal core is melted, obtain overall plastic air intake manifold after treatment.The principle of the latter is when designing plastic air intake manifold, baroque inlet manifold is split as structure relatively simple, can the multi-disc plastics split of single injection-molded, after each plastics split respectively injection mo(u)lding, each split welds by recycling friction-welding machine one by one, the inlet manifold that final formation is complete.
In two kinds of above-mentioned techniques, the goods precision of fusible core injection molding method is high, inner chamber is smooth, total quality good, but have that energy consumption is large, contaminated environment is heavy, high in cost of production shortcoming; And after Split injection the energy consumption of the friction welding method of forming relatively low, pollute comparatively light, manufacturing cost is relatively low, but there is inlet manifold inner chamber and have the shortcomings such as smooth not, goods precision not enough, total quality is low, percent defective is high.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, and the manufacture method of a kind of technique advanced person, energy-conserving and environment-protective, plastics air inlet manifold branch of engine that integrated cost is low is provided.
The technical scheme realizing the object of the invention is:
A manufacture method for plastic air intake manifold, comprises the steps:
1, one and the identical rubber sleeve of required inlet manifold cavity shape is made with elastomeric material, the arm that rubber sleeve comprises a supervisor and communicates with supervisor;
2, in the die cavity of plastic air intake manifold injection mold, inlay a pressure sensor, immediately can detect the force value of plastic melt in die cavity when injection moulding;
3, rubber sleeve step 1 made, be placed in the die cavity of plastic air intake manifold injection mold, one end of rubber sleeve supervisor connects high-pressure hydraulic pump, and the other end connects electronic overflow valve, Pressure gauge is parallel with, to observe the hydraulic pressure value in rubber sleeve between the outlet and electronic overflow valve of supervisor; Also be provided with single-chip microcomputer to be connected with pressure sensor and electronic overflow valve, the opening pressure of overflow valve is subject to the control of MCU Instruction, and the outlet of overflow valve is connected to radiator, and the water outlet of overflow valve is back to water tank and recycles after radiator heat-dissipation, cooling;
4, before injection moulding, in rubber sleeve, inject cooling water by high-pressure hydraulic pump, adjust the size of electronic overflow valve opening pressure, make rubber sleeve expand into the size equal with the internal diameter of required plastic air intake manifold;
5, close injection mold, starts toward injected plastic melt in mould;
6, along with the continuous filling of plastic melt, melt pressure in die cavity rises rapidly, pressure sensor in die cavity detects the change of melt pressure and compares process by carrying out data in this Signal transmissions to single-chip microcomputer, single-chip microcomputer sends control signal subsequently to electronic overflow valve, the opening pressure of adjustment overflow valve, hydraulic pressure in rubber sleeve rises immediately, and remains to equal with melt pressure;
7, injection moulding is complete, after part cooling sizing, closes high-pressure hydraulic pump, opens mould, after rubber sleeve draining pressure release, extracted out by rubber sleeve from the inlet manifold of forming, namely obtain qualified plastic air intake manifold goods.
In step 1, use perfluoroelastomers material, adopt prior art to make and the identical rubber sleeve of required inlet manifold cavity shape, the wall thickness of rubber sleeve is 0.5 ~ 1.0mm.Perfluoroelastomers has excellent resistance to elevated temperatures, under the high temperature of 300 DEG C, also can keep the elastic characteristic of rubber.The inner chamber of shape and inlet manifold after rubber sleeve expands is completely the same, and by test, demarcation in advance expand into the specified hydraulic pressure value of required size.
Plastic air intake manifold injection mold described in step 3 is prior art, and the placement of rubber sleeve is identical with traditional ashbury metal core.Rubber sleeve needs first to inject cooling water before injection moulding, to ensure that rubber sleeve expand into the size equal with the internal diameter of required plastic air intake manifold.Rubber sleeve is when injection mo(u)lding, because its inside has continuously cooling water flowing, current by hot plastic melt the heat be delivered on rubber sleeve take away rapidly, thus ensure that rubber sleeve can not because contact hot plastic melt and produce the phenomenon of breaking or melting.
The manufacture of plastic air intake manifold of the present invention, owing to instead of ashbury metal core with rubber sleeve, avoids making, fusing and reclaims this complex process of ashbury metal core.Rubber sleeve is after each injection mo(u)lding, and draining pressure release can be taken out, and thus can recycle.Therefore, the inventive method saves energy consumption greatly, avoids environmental pollution.The inventive method is compared with the shaping welding of Split injection, and because it is without the need to welding, the deformation defect caused when the weld seam formed when not welding and welding, therefore, the inner wall smooth degree of obtained plastic air intake manifold goods obtains raising by a relatively large margin.
In sum, the plastic air intake manifold adopting the inventive method to manufacture, reduces energy consumption and environmental pollution, and can improve the flow rate of gas in inlet manifold, thus improves the fuel economy of engine.
The present invention compared with prior art its beneficial effect is:
1., compared with fusible core injection molding method, avoid this process of making, fusing tin matter core, thus avoid environmental pollution, decrease energy consumption, reduce cost.
2. compared with welding shaping with Split injection, due to without the need to welding, the distortion caused when the weld seam formed when not welding and welding, therefore, the inner wall smooth degree of inlet manifold obtains and significantly improves, therefore can improve the flow rate of gas in inlet manifold, thus improve the fuel economy of engine.
3. adopt the inlet manifold that the method manufactures, overall manufacturing cost significantly reduces.
Accompanying drawing explanation
Fig. 1 is the structural front view of embodiment rubber sleeve;
Fig. 2 is the side view of Fig. 1;
Fig. 3 be embodiment inlet manifold when injection mo(u)lding to the connection diagram of relevant components and parts.
In figure, 1. electronic overflow valve 8. radiator 9. water tank of high-pressure hydraulic pump 2. injection mold 3. rubber sleeve 3-1. rubber sleeve supervisor's 3-2. rubber sleeve arm 4. pressure sensor 5. single-chip microcomputer 6. Pressure gauge 7..
Detailed description of the invention
Below in conjunction with drawings and Examples, content of the present invention is further described, but is not limitation of the invention.
Embodiment
With reference to Fig. 1, Fig. 2 and Fig. 3, the present embodiment is the manufacture of the motor intake manifold of material for employing engineering plastics PA66+GF.
First, adopt perfluoroelastomers to produce one and the identical rubber sleeve 3 of required inlet manifold cavity shape, its wall thickness is between 0.5 ~ 1.0mm, and this rubber sleeve 3 can be rubbed arbitrarily when not having water-filling, rolling over.The arm 3-2 that rubber sleeve 3 comprises a supervisor 3-1 and communicates with supervisor 3-1.
Secondly, in the model cavity of plastic air intake manifold injection mold 2, inlay a pressure sensor 4, immediately can detect the force value of plastic melt in die cavity when injection moulding; When preparing injection moulding production, rubber sleeve 3 is put into the die cavity of inlet manifold injection mold 2, the entrance that high-pressure hydraulic pump 1 and rubber sleeve are responsible for 3-1 is connected, the outlet of supervisor 3-1 is connected with electronic overflow valve 7, Pressure gauge 6 is parallel with to observe the hydraulic pressure value in rubber sleeve 3 between outlet and overflow valve 7, the outlet of overflow valve 7 is connected to radiator 8, the water outlet of overflow valve 7 is dispelled the heat through radiator 8, cool after be back to water tank 9 and recycle.
During injection moulding, in rubber sleeve 3, inject cooling water by high-pressure hydraulic pump 1, rubber sleeve 3 starts to expand, the opening pressure of adjustment overflow valve 7, namely the hydraulic pressure in control rubber sleeve 3, to reach predetermined force value, makes rubber sleeve 3 expand into the size equal with the internal diameter of required plastic air intake manifold; Closed die 2, injected plastic melt in mould 2, along with the continuous filling of plastic melt, melt pressure in die cavity rises rapidly, pressure sensor 4 in die cavity detects the change of melt pressure and compares process by carrying out data in this Signal transmissions to single-chip microcomputer 5, and single-chip microcomputer 5 sends control signal to electronic overflow valve 7 immediately, the opening pressure of adjustment overflow valve 7, hydraulic pressure in rubber sleeve 3 rises immediately, and remains to equal with melt pressure; Injection moulding is complete, after part cooling sizing, closes high-pressure hydraulic pump 1, opens mould 2, discharge the water in rubber sleeve 3, it extracted out from the inlet manifold of forming, namely obtain qualified required plastic air intake manifold goods.
After adopting above scheme, reduce energy consumption and environmental pollution, simultaneously, the weld seam caused during owing to not welding and distortion, therefore the smooth degree of the internal pipeline of inlet manifold is unaffected, thus can improve the flow efficiency of gas in inlet manifold, thus improve the fuel economy of engine.
Claims (2)
1. a manufacture method for plastic air intake manifold, is characterized in that comprising the steps:
(1) one and the identical rubber sleeve of required inlet manifold cavity shape is made with elastomeric material, the arm that rubber sleeve comprises a supervisor and communicates with supervisor;
(2) in the die cavity of plastic air intake manifold injection mold, inlay a pressure sensor;
(3) by rubber sleeve that step (1) is made, be placed in the die cavity of plastic air intake manifold injection mold, one end of rubber sleeve supervisor connects high-pressure hydraulic pump, the other end connects electronic overflow valve, Pressure gauge is parallel with between the outlet and electronic overflow valve of supervisor, to observe the hydraulic pressure value in rubber sleeve, also be provided with single-chip microcomputer to be connected with pressure sensor and electronic overflow valve, the opening pressure of electronic overflow valve is subject to the control of MCU Instruction, the outlet of electronic overflow valve is connected to radiator, the water outlet of electronic overflow valve is through radiator heat-dissipation, be back to water tank after cooling to recycle,
(4) before injection moulding, in rubber sleeve, inject cooling water by high-pressure hydraulic pump, adjust the size of electronic overflow valve opening pressure, make rubber sleeve expand into the size equal with the internal diameter of required plastic air intake manifold;
(5) close injection mold, starts toward injected plastic melt in mould;
(6) pressure sensor in die cavity detects the change of melt pressure and compares process by carrying out data in this Signal transmissions to single-chip microcomputer, single-chip microcomputer sends control signal to electronic overflow valve immediately, adjust the opening pressure of electronic overflow valve, hydraulic pressure in rubber sleeve rises immediately, and remains to equal with melt pressure;
(7) injection moulding is complete, after part cooling sizing, closes high-pressure hydraulic pump, opens mould, after rubber sleeve draining pressure release, extracted out by rubber sleeve from the plastic air intake manifold of forming, namely obtain qualified plastic air intake manifold goods.
2. the manufacture method of plastic air intake manifold according to claim 1, is characterized in that: step (1) adopts perfluoroelastomers material to make rubber sleeve, and the wall thickness of rubber sleeve is 0.5 ~ 1.0mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410209474.7A CN103991164B (en) | 2014-05-19 | 2014-05-19 | A kind of manufacture method of plastic air intake manifold |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410209474.7A CN103991164B (en) | 2014-05-19 | 2014-05-19 | A kind of manufacture method of plastic air intake manifold |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103991164A CN103991164A (en) | 2014-08-20 |
| CN103991164B true CN103991164B (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410209474.7A Expired - Fee Related CN103991164B (en) | 2014-05-19 | 2014-05-19 | A kind of manufacture method of plastic air intake manifold |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106945296B (en) * | 2017-04-24 | 2023-08-22 | 苏州科技大学 | Intake manifold assembly test production system |
| CN110576569B (en) * | 2019-09-18 | 2022-01-11 | 江门市江海区长河塑胶厂有限公司 | Plastic bottle encapsulation process |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001235259A (en) * | 2000-02-22 | 2001-08-31 | Tgk Co Ltd | Expansion valve |
| CA2470599C (en) * | 2003-06-13 | 2010-08-03 | Honda Motor Co., Ltd. | Dual port intake device for an internal combustion engine formed by injection molding |
| CN2648097Y (en) * | 2003-09-17 | 2004-10-13 | 重庆宗申技术开发研究有限公司 | Petrol engine plastic air inlet divided manifold |
| CN1991159A (en) * | 2005-12-29 | 2007-07-04 | 比亚迪股份有限公司 | Method for manufacturing inlet manifold of internal combustion engine |
| CN201013497Y (en) * | 2007-03-02 | 2008-01-30 | 天津惠德汽车进气系统有限公司 | Plastic induction manifold for automobile engine |
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- 2014-05-19 CN CN201410209474.7A patent/CN103991164B/en not_active Expired - Fee Related
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| CN103991164A (en) | 2014-08-20 |
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