WO2020082428A1 - Egr阀传感器盖板注塑成型工艺 - Google Patents

Egr阀传感器盖板注塑成型工艺 Download PDF

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Publication number
WO2020082428A1
WO2020082428A1 PCT/CN2018/114576 CN2018114576W WO2020082428A1 WO 2020082428 A1 WO2020082428 A1 WO 2020082428A1 CN 2018114576 W CN2018114576 W CN 2018114576W WO 2020082428 A1 WO2020082428 A1 WO 2020082428A1
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Prior art keywords
mold
injection
injection molding
pressure
egr valve
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PCT/CN2018/114576
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English (en)
French (fr)
Inventor
蔡年春
葛瑞祥
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扬州市实达塑业有限公司
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Publication of WO2020082428A1 publication Critical patent/WO2020082428A1/zh

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
    • B29B13/00—Conditioning or physical treatment of the material to be shaped
    • B29B13/06—Conditioning or physical treatment of the material to be shaped by drying
    • 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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/77—Measuring, controlling or regulating of velocity or pressure of moulding material
    • 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
    • B29C45/17—Component parts, details or accessories; Auxiliary operations
    • B29C45/76—Measuring, controlling or regulating
    • B29C45/78—Measuring, controlling or regulating of temperature
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76498—Pressure
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76531—Temperature
    • 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
    • B29C2945/00—Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76—Measuring, controlling or regulating
    • B29C2945/76494—Controlled parameter
    • B29C2945/76595—Velocity
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3481—Housings or casings incorporating or embedding electric or electronic elements

Definitions

  • the invention belongs to the technical field of automobile parts production, in particular, in particular to an injection molding process of an EGR valve sensor cover plate that can effectively solve the pin in the cover plate, the circuit board is easy to corrode, and has high sealing performance.
  • the ECU calculates the opening degree of the current EGR system demand based on the engine speed, fuel amount and other signals, and uses the calculated signal to control the opening degree of the EGR valve to adjust the exhaust gas flow so that Exhaust gas and fresh air are mixed in a certain proportion and then returned to the cylinder for recirculation to reduce the combustion temperature and combustion speed in the cylinder, thereby reducing NOx emissions.
  • EGR engine exhaust gas recirculation
  • the EGR valve sensor cover is a plastic plate that seals the EGR valve motor, transmission mechanism and transmission gear in the body of the EGR valve.
  • One end of the plastic plate is a plug with 5 pins connected to the engine harness, of which 3 pins are wrapped inside
  • the cable is connected to the EGR angle sensor circuit board, and the other two pins are also connected to the motor plug at the other end of the cover plate through the cable wrapped inside the plastic plate.
  • the traditional forming process of the EGR valve sensor cover plate is: directly using the thimble in the mold to position the five pins, and then injection molding with an injection molding machine.
  • the process is simple and easy, but it has serious technical defects. Because in the injection molding process, the position where the thimble locates the pin is blocked by the thimble, the molten plastic cannot cover it, and the finished product will leave the thimble eye, which means that the pin at the thimble eye is exposed and not covered by plastic .
  • Five pins require at least 12 thimble to be fixed, then at least 12 thimble eyes will be left on the finished pin.
  • the pin end on the front of the cover plate (as indicated by the reference number 4 in Figure 5 of the drawings of the specification) is connected to the EGR angle sensor circuit board.
  • the pin ends on the front are electrically connected, and then the circuit board backplane is covered after the connection is completed.
  • the hot exhaust gas will enter the circuit board through the cover board through the 12 thimble holes.
  • the hot exhaust gas will condense into a layer of water mist and condensed water on the surface of the circuit board. Fog leads to a very high failure rate of the circuit board. Therefore, the EGR valve sensor cover requires high sealing performance.
  • the purpose of the present invention is to provide an injection molding process for an EGR valve sensor cover plate that can effectively solve the problem of the pin in the cover plate, the circuit board is easy to corrode, and has high sealing performance.
  • An EGR valve sensor cover injection molding process which is implemented based on the corresponding injection molding machine and injection mold, includes the following steps:
  • step B Inspect the product in step A, remove the defective products, and put the qualified products aside for use;
  • step C Perform secondary processing on the product of step B, wrap the qualified interlayer package in the outer layer package, and the outer layer package is injection molded by an injection molding machine;
  • step C is the finished EGR valve sensor cover.
  • the step A includes the following sub-steps:
  • Raw material pretreatment put the raw materials into the oven for 2-3 hours of drying treatment, and heat the raw materials to 80-95 ° C;
  • Injection molding machine and injection mold I heating pretreatment heat the screw cylinder in the injection molding machine to 270-295 ° C, heat the hot runner in the injection molding machine to 275-285 ° C, and heat the injection mold I to 160-190 ° C ;
  • the step C includes the following sub-steps:
  • Raw material pretreatment put the raw material into the oven for 2-3 hours of drying treatment, and heat the raw material to 80-95 °C;
  • Mold clamping and positioning pins the injection molding machine closes the mold, and the thimble in the injection mold II is used to position the sandwich package and the mounting hole protection metal sleeve in the cavity of the injection mold II;
  • Injection molding machine and injection mold heating pretreatment heat the screw cylinder in the injection molding machine to 270-295 ° C, heat the hot runner in the injection molding machine to 275-285 ° C, and heat the injection mold I to 160-190 ° C;
  • Plasticization add the raw material preprocessed in step C2 to the pre-heated screw cylinder and heat it to a molten state;
  • the number of the pins is five, five of the pins are not in electrical contact with each other, and all ten ends of the five pins are exposed on the cover body.
  • the mold clamping is divided into a fast mold clamping stage, a low pressure mold clamping stage, and a high pressure mold clamping stage;
  • the pressure of the quick mold clamping stage is 38-42Mpa, the speed is 26-30m / s, and the position parameter is 10mm;
  • the pressure in the low-pressure clamping stage is 2-4Mpa, the speed is 18-22m / s, and the position parameter is 1000P;
  • the pressure in the high-pressure clamping stage is 80-90Mpa, the speed is 42-46m / s, and the position parameter is 100P.
  • the mold opening is divided into a slow mold opening stage, a fast mold opening stage and a deceleration mold opening stage;
  • the pressure of the slow mold opening stage is 80-90Mpa, the speed is 18-22m / s, and the position parameter is 1600P;
  • the pressure in the rapid mold opening phase is 38-42Mpa, the speed is 28-32m / s, the position parameter is 250mm;
  • the pressure in the deceleration mold opening phase is 10-15Mpa, the speed is 10-14m / s, position
  • the parameter is 300mm.
  • the injection in the injection molding step is divided into three stages, wherein the pressure of the injection section is 40-46Mpa, the speed is 98-100m / s, the position parameter is 3mm; the injection section pressure It is 28-32Mpa, the speed is 98-100mm, the position parameter is 0; the pressure of the three sections of injection is 18-22Mpa, the speed is 98-100mm, the position parameter is 0.
  • the cavity surface of the injection mold I is roughened.
  • the rough surface is realized by an electric spark intensifier.
  • the raw material is PPS plastic.
  • the invention has a clever concept.
  • the five pins are taken out separately as an interlayer package and injected separately.
  • the 12 thimble eyes on the pins will only be left on the interlayer package, and the interlayer package will be sealed and wrapped in the outer package.
  • a whole so as to effectively avoid the direct contact between the pin at the eye of the thimble and the hot exhaust gas; and the interlayer package is wrapped in the outer package to play a good sealing role, the pin and the circuit board are not easily corroded by water mist, and the circuit board
  • the failure rate and product defect rate have been greatly reduced, and the service life of the cover plate has been significantly improved;
  • the present invention solves the big problem of the production of the EGR valve sensor cover plate for the enterprise, which creates a considerable economic benefit for the enterprise, and also creates a significant In view of local social benefits, the present invention has very important significance in the field of EGR valve sensor cover production technology.
  • Figure 1 is a schematic diagram 1 of the finished product structure of the present invention.
  • FIG. 2 is a schematic diagram 2 of the finished product structure of the present invention.
  • FIG. 3 is a schematic diagram 1 of the structure of the sandwich package of the present invention.
  • FIG. 4 is a second schematic structural view of the sandwich package of the present invention.
  • FIG. 5 is a schematic diagram 1 of the internal pin structure of the sandwich package of the present invention.
  • FIG. 6 is a second schematic diagram of the internal pin structure of the sandwich package of the present invention.
  • An EGR valve sensor cover injection molding process which is implemented based on the corresponding injection molding machine and injection mold, includes the following steps:
  • step B Inspect the product in step A, remove the defective products, and put the qualified products aside for use;
  • Step C Perform secondary processing on the product of Step B, wrap the qualified interlayer package in the outer layer package 1, and the outer layer package 1 is injection molded by an injection molding machine;
  • step C is the finished EGR valve sensor cover.
  • the step A includes the following sub-steps:
  • Raw material pretreatment put the raw materials into the oven for 2-3 hours of drying treatment, and heat the raw materials to 80-95 ° C;
  • Mold clamping and positioning pin 3 the injection molding machine closes the mold, and the thimble in the injection mold I is used to position the pin 3 in the cavity of the injection mold I;
  • Injection molding machine and injection mold I heating pretreatment heat the screw cylinder in the injection molding machine to 270-295 ° C, heat the hot runner in the injection molding machine to 275-285 ° C, and heat the injection mold I to 160-190 ° C ;
  • the step C includes the following sub-steps:
  • Raw material pretreatment put the raw material into the oven for 2-3 hours of drying treatment, and heat the raw material to 80-95 °C;
  • C3 Clamping and positioning pin 3: The injection molding machine is closed, and the thimble in the injection mold II is used to position the sandwich package and the mounting hole protection metal sleeve 2 in the cavity of the injection mold II;
  • Injection molding machine and injection mold heating pretreatment heat the screw cylinder in the injection molding machine to 270-295 ° C, heat the hot runner in the injection molding machine to 275-285 ° C, and heat the injection mold I to 160-190 ° C;
  • Plasticization add the raw material preprocessed in step C2 to the pre-heated screw cylinder and heat it to a molten state;
  • the number of the pins 3 is five, five of the pins 3 are not in electrical contact with each other, and ten ends of the five pins 3 are exposed to the cover body.
  • the mold clamping is divided into a fast mold clamping stage, a low pressure mold clamping stage, and a high pressure mold clamping stage;
  • the pressure of the quick mold clamping stage is 38-42Mpa, the speed is 26-30m / s, and the position parameter is 10mm;
  • the pressure in the low-pressure clamping stage is 2-4Mpa, the speed is 18-22m / s, and the position parameter is 1000P;
  • the pressure in the high-pressure clamping stage is 80-90Mpa, the speed is 42-46m / s, and the position parameter is 100P.
  • the mold opening is divided into a slow mold opening stage, a fast mold opening stage and a deceleration mold opening stage;
  • the pressure of the slow mold opening stage is 80-90Mpa, the speed is 18-22m / s, and the position parameter is 1600P;
  • the pressure in the rapid mold opening phase is 38-42Mpa, the speed is 28-32m / s, the position parameter is 250mm;
  • the pressure in the deceleration mold opening phase is 10-15Mpa, the speed is 10-14m / s, position
  • the parameter is 300mm.
  • the injection in the injection molding step is divided into three stages, wherein the pressure of the injection section is 40-46Mpa, the speed is 98-100m / s, the position parameter is 3mm; the injection section pressure It is 28-32Mpa, the speed is 98-100mm, the position parameter is 0; the pressure of the three sections of injection is 18-22Mpa, the speed is 98-100mm, the position parameter is 0.
  • the cavity surface of the injection mold I is roughened.
  • the rough surface is realized by an electric spark intensifier.
  • the raw material is PPS plastic.
  • This embodiment is implemented based on the corresponding injection molding machine and injection mold.
  • the model of the injection molding machine is MA1600II / 540.
  • the process method of this embodiment includes the following steps:
  • step B Inspect the product in step A, remove the defective products, and put the qualified products aside for use;
  • Step C Perform secondary processing on the product of Step B, wrap the qualified interlayer package in the outer layer package 1, and the outer layer package 1 is injection molded by an injection molding machine;
  • step C is the finished EGR valve sensor cover.
  • the sandwich package is sealed and wrapped in the outer package to form a whole, thereby effectively avoiding the direct contact of the pin at the eye of the thimble with the hot exhaust gas; and the sandwich package is wrapped in the outer package, which plays a good role
  • the sealing function the pins and the circuit board are not easily corroded by water mist, the failure rate of the circuit board and the product defect rate are greatly reduced, and the service life of the cover plate is significantly improved.
  • This embodiment is implemented based on the corresponding injection molding machine and injection mold.
  • the model of the injection molding machine is MA1600II / 540.
  • the process method of this embodiment includes the following steps:
  • step B Inspect the product in step A, remove the defective products, and put the qualified products aside for use;
  • Step C Perform secondary processing on the product of Step B, wrap the qualified interlayer package in the outer layer package 1, and the outer layer package 1 is injection molded by an injection molding machine;
  • step C is the finished EGR valve sensor cover.
  • step A includes the following sub-steps:
  • Raw material pretreatment put the raw material into the oven for 3 hours of drying treatment, and heat the raw material to 95 °C;
  • Mold clamping and positioning pin 3 The injection molding machine closes the mold and uses the thimble in the injection mold I to position the pin 3 in the cavity of the injection mold I; the mold clamping is divided into a rapid mold clamping stage and a low pressure lock Molding stage, high-pressure clamping stage; rapid clamping stage with a pressure of 40Mpa, speed of 28m / s, and position parameter of 10mm; low-pressure clamping stage with a pressure of 2Mpa, speed of 20m / s, and position parameter of 1000P; high-pressure lock The pressure in the mold stage is 85Mpa, the speed is 45m / s, and the position parameter is 100P.
  • Injection molding machine and injection mold I heating pretreatment heat the screw cylinder in the injection molding machine to 283 °C, heat the hot runner in the injection molding machine to 280 °C, and heat the injection mold I to 180 °C;
  • step A6 Injection molding: the product of step A5 is injected into the preheated injection mold I through the preheated hot runner nozzle; the injection is divided into three stages, the pressure of the injection section is 42Mpa, the speed It is 99m / s, the position parameter is 3mm; the pressure of the second injection section is 30Mpa, the speed is 99mm, the position parameter is 0; the pressure of the third injection section is 20Mpa, the speed is 99mm, and the position parameter is 0.
  • the thimble in the injection mold I lifts the workpiece on the mold to make it separate from the mold, and the workers take the parts after the mold is released.
  • the mold opening is divided into slow mold opening stage, fast mold opening stage and deceleration mold opening stage; the slow mold opening stage pressure is 85Mpa, the speed is 20m / s, the position parameter is 1600P; the fast mold opening stage pressure is 40Mpa, The speed is 30m / s, the position parameter is 250mm; the pressure during the deceleration mold opening phase is 13Mpa, the speed is 12m / s, and the position parameter is 300mm.
  • Step C includes the following sub-steps:
  • Raw material pretreatment put the raw material into the oven for 3 hours of drying treatment, and heat the raw material to 95 °C;
  • C3 Clamping and positioning pin 3:
  • the injection molding machine is closed, and the thimble in the injection mold II is used to position the sandwich package and the mounting hole protection metal sleeve 2 in the cavity of the injection mold II;
  • the mold clamping is divided into quick lock Mold stage, low pressure mold clamping stage, high pressure mold clamping stage; rapid mold clamping stage with pressure of 40Mpa, speed of 28m / s, position parameter of 10mm; low pressure clamping stage of pressure of 2Mpa, speed of 20m / s, position parameter It is 1000P;
  • the pressure in the high-pressure clamping stage is 85Mpa, the speed is 45m / s, and the position parameter is 100P.
  • Injection molding machine and injection mold heating pretreatment heat the screw cylinder in the injection molding machine to 283 °C, heat the hot runner in the injection molding machine to 280 °C, and heat the injection mold I to 180 °C;
  • Plasticization add the raw material preprocessed in step C2 to the pre-heated screw cylinder and heat it to a molten state;
  • step C6 Injection molding: injection of the product of step C5 through the preheated hot runner nozzle into the preheated injection mold II; in which the injection is divided into three stages, the pressure of the injection section is 42Mpa, the speed It is 99m / s, the position parameter is 3mm; the pressure of the second injection section is 30Mpa, the speed is 99mm, the position parameter is 0; the pressure of the third injection section is 20Mpa, the speed is 99mm, and the position parameter is 0.
  • the thimble in the injection mold II lifts the workpiece on the mold to make it separate from the mold, and the worker takes the parts after disconnecting the mold.
  • the mold opening is divided into slow mold opening stage, fast mold opening stage and deceleration mold opening stage; the slow mold opening stage pressure is 85Mpa, the speed is 20m / s, the position parameter is 1600P; the fast mold opening stage pressure is 40Mpa, The speed is 30m / s, the position parameter is 250mm; the pressure during the deceleration mold opening phase is 13Mpa, the speed is 12m / s, and the position parameter is 300mm.
  • the number of pins is five, the five pins are not in electrical contact with each other, and the ten ends of the five pins are exposed on the cover body.
  • This embodiment is ingeniously designed. Five pins are taken out separately as an interlayer package and injected separately. The 12 thimble eyes on the pins will only remain on the interlayer package, and the interlayer package will be tightly wrapped in the outer package It forms a whole, so as to effectively avoid the direct contact between the pin at the eye of the thimble and the hot exhaust gas; and the interlayer package is wrapped in the outer package to play a good sealing role, the pin and the circuit board are not easily corroded by water mist, the circuit The failure rate of the board and the defect rate of the product have been greatly reduced, and the service life of the cover plate has been significantly improved; this embodiment solves the big problem of the production of the EGR valve sensor cover plate for the enterprise, creating a considerable economic benefit for the enterprise, and also creating In view of the significant social benefits, this embodiment has very important significance in the field of EGR valve sensor cover production technology.
  • Example 1 and Example 2 are the EGR valve sensor cover plate is the first-generation product after improvement. It can be seen from Example 1 and Example 2 that the positioning of the sandwich package is also fixed by the thimble of the injection mold I, so The finished product will have a thimble eye for positioning the interlayer package. Generally, there are three thimble holes for positioning the interlayer package. The interlayer package is injection-molded and wrapped in the outer package 1, although it has good airtight performance, but it can not be completely airtight, the air leakage performance of the finished products of Example 1 and Example 2 was found There is indeed a very small amount of air leakage.
  • the main reason for the analysis is that the surface of the sandwich package is relatively smooth, and it cannot be fully integrated with the outer package 1 during the injection molding process of the outer package 1. As long as there is air leakage, there will be problems with pins and circuit board failures, but only the problem of the time of failure.
  • the surface of the cavity surface of the injection mold I is roughened by an electric spark intensifier.
  • the model of EDM is D91250.
  • the surface of the cavity of the injection mold I is treated with an electric spark intensifier, and the surface of the injection-molded interlayer will appear as a matte surface.
  • Example 3 The experiment found that the EGR valve sensor cover plate produced in Example 3 completely reached a closed state and was completely airtight, that is, the probability of circuit board failure and plug corrosion caused by water mist was zero.
  • the matte surface body makes the sandwich package and the outer package unite into one, and the contact is closer, so as to achieve a completely sealed state;
  • the matte surface body The gas moves in a tortuous direction, the resistance is too large, the gas disappears before reaching the position of the circuit board, so it can reach a completely sealed state.
  • This embodiment is cleverly conceived.
  • the cavity surface of the injection mold I is treated with rough surface, so that the rough surface sandwich package and the outer layer package are sealed and fused to achieve a completely closed state, and the pins and the circuit board are completely free of water mist. Corrosion, pin corrosion, circuit board failure rate is zero, and the service life of the cover plate is very high; this embodiment solves the big problem of the enterprise producing EGR valve sensor cover plate, creating a considerable economic benefit for the enterprise, and also Significant social benefits have been created, and this embodiment has very important significance in the field of EGR valve sensor cover production technology.

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  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)

Abstract

一种EGR阀传感器盖板注塑成型工艺，包括如下操作步骤：在注塑机中注塑成型包有插针(3)的夹层包裹件，将合格的夹层包裹件注塑包裹在外层包裹件(1)内。该工艺解决了传统EGR阀传感器盖板注塑工艺注塑出的成品插针易腐蚀、密闭性能差、线路板失效率高的问题。

Description

EGR阀传感器盖板注塑成型工艺 技术领域
本发明属于汽车配件生产技术领域，具体地说，尤其涉及一种能有效解决盖板内插针、线路板易腐蚀、高密闭性能的EGR阀传感器盖板注塑成型工艺。
背景技术
在发动机废气再循环(EGR)系统中，ECU根据发动机转速、油量等信号计算出当前EGR系统需求的开度，利用计算出来的信号来控制EGR阀的开度大小，从而调节废气流量，使废气与新鲜空气按一定比例混合后返回气缸进行再循环，以降低气缸内燃烧温度以及燃烧速度，从而减少NOX的排放量。
EGR阀传感器盖板是将EGR阀电机、传动机构和变速齿轮等密封于EGR阀阀体内的一块塑料板，塑料板一头是连接发动机线束的5根插针的插头，其中3根插针分别通过内部包裹的排线与EGR转角传感器线路板连接，另外2根插针也是通过塑料板内部包裹的排线与盖板另一头的电机插头相连。
传统EGR阀传感器盖板成型工艺为：直接利用模具内的顶针将五根插针位置定位好后利用注塑机注塑成型。该工艺简单易行，但其存在较为严重的技术缺陷。因为在注塑过程中，顶针定位插针的地方由于顶针的遮挡，熔融的塑料无法覆盖，成型后的成品会留下顶针眼，也就是说顶针眼处的插针是裸露在外、没有塑料包裹的。五根插针至少需要12根顶针固定，那么在成品的插针上就会至少留下12个顶针眼。
我们知道，进入EGR阀阀体内的废气是具有一定温度，具有一定温度的废气遇冷会在盖板表体凝结成一层水雾，这种现象在寒冷的冬天更为明显。凝结的水雾会对裸露在外的12个顶针眼处的插针造成腐蚀，严重影响着插针的导电性能。
此外，在装配盖板时，盖板正面的插针端头(如说明书附图图5上的标号4所示)连接的是EGR转角传感器线路板，EGR转角传感器线路板经接线端子与盖板正面的插针端头电气连接，插接好后再盖上线路板背板。也就是说在盖板的正面是有线路板的，热废气会通过12个顶针眼穿过盖板进入到线路板处，同样，热废气会在线路板表层凝结成一层水雾，凝结的水雾导致线路板失效率非常高。 所以，EGR阀传感器盖板对密闭性能要求很高。
发明内容
本发明的目的是针对现有技术存在的不足，提供了一种能有效解决盖板内插针、线路板易腐蚀、高密闭性能的EGR阀传感器盖板注塑成型工艺。
本发明是通过以下技术方案实现的：
一种EGR阀传感器盖板注塑成型工艺，该工艺基于相应的注塑机和注塑模具来实施，包括如下操作步骤：
A.首先在注塑机中注塑成型包有插针的夹层包裹件；
B.检验步骤A中的产物，剔除不良品，将合格品放置一边以备用；
C.对步骤B的产物进行二次加工，将合格的夹层包裹件包裹在外层包裹件内，外层包裹件由注塑机注塑成型；
D.步骤C中的产物即为EGR阀传感器盖板成品。
优选地，所述步骤A包括以下分步骤：
A1)预先开发制作所述夹层包裹件相应的注塑模具Ⅰ；
A2)原料预处理：将原料放入烘箱进行2-3小时的烘干处理，并将原料加热到80-95℃；
A3)合模并定位插针：注塑机合模，并利用注塑模具Ⅰ内的顶针将所述插针定位在注塑模具Ⅰ的型腔内；
A4)注塑机和注塑模具Ⅰ加热预处理：将注塑机中的螺筒加热到270-295℃，将注塑机中的热流道加热到275-285℃，将注塑模具Ⅰ加热到160-190℃；
A5)塑化：将步骤A2预处理好的原料添加到预加热后的螺筒中，加热至熔融状态；
A6)射胶注塑：将步骤A5的产物经预加热后的热流道的射咀注塑到预加热后的注塑模具Ⅰ内；
A7)冷却成型；
A8)开模取件：注塑模具Ⅰ内的顶针将模具上的工件托起，使之脱离模具，脱离模具后工人取件。
优选地，所述步骤C包括以下分步骤：
C1)预先开发制作外层包裹件相应的注塑模具Ⅱ；
C2)原料预处理：将原料放入烘箱进行2-3小时的烘干处理，并将原料加 热到80-95℃；
C3)合模并定位插针：注塑机合模，并利用注塑模具Ⅱ内的顶针将夹层包裹件以及安装孔保护金属套定位在注塑模具Ⅱ的型腔内；
C4)注塑机和注塑模具加热预处理：将注塑机中的螺筒加热到270-295℃，将注塑机中的热流道加热到275-285℃，将注塑模具Ⅰ加热到160-190℃；
C5)塑化：将步骤C2预处理好的原料添加到预加热后的螺筒中，加热至熔融状态；
C6)射胶注塑：将步骤C5的产物经预加热后的热流道的射咀注塑到预加热后的注塑模具Ⅱ内；
C7)冷却成型；
C8)开模取件：注塑模具Ⅱ内的顶针将模具上的工件托起，使之脱离模具，脱离模具后工人取件。
优选地，所述插针的数量为五，五根所述插针相互无电气接触，且五根插针的十个端头均露于盖板表体。
优选地，所述合模分为快速锁模阶段、低压锁模阶段、高压锁模阶段；所述快速锁模阶段的压力为38-42Mpa，速度为26-30m/s，位置参数为10mm；所述低压锁模阶段的压力为2-4Mpa，速度为18-22m/s，位置参数为1000P；所述高压锁模阶段的压力为80-90Mpa，速度为42-46m/s，位置参数为100P。
优选地，所述开模分为慢速开模阶段、快速开模阶段以及减速开模阶段；所述慢速开模阶段的压力为80-90Mpa，速度为18-22m/s，位置参数为1600P；所述快速开模阶段的压力为38-42Mpa,速度为28-32m/s，位置参数为250mm；所述减速开模阶段的压力为10-15Mpa，速度为10-14m/s，位置参数为300mm。
优选地，所述射胶注塑步骤中的射胶分为三个阶段，其中，射胶一段的压力为40-46Mpa，速度为98-100m/s，位置参数为3mm；射胶二段的压力为28-32Mpa，速度为98-100mm，位置参数为0；射胶三段的压力为18-22Mpa，速度为98-100mm，位置参数为0。
优选地，所述注塑模具Ⅰ的型腔表体进行毛面处理。
优选地，所述毛面通过电火花强化机实现。
优选地，所述原料为PPS塑料。
与现有技术相比，本发明的有益效果是：
本发明构思巧妙，将五根插针单独拿出作为夹层包裹件单独注塑，插针上的12个顶针眼仅会留在夹层包裹件上，而夹层包裹件会被密闭包裹在外层包裹件内构成一个整体，从而有效避免顶针眼处的插针与热废气直接接触；且夹层包裹件被包裹在外层包裹件内，起到良好的密闭作用，插针、线路板不易受到水雾腐蚀，线路板失效率、产品不良率大幅度下降，盖板的使用寿命明显大幅度提高；本发明解决了企业生产EGR阀传感器盖板的大难题，为企业创造了非常可观的经济效益，同时也创造了显著地社会效益，本发明在EGR阀传感器盖板生产技术领域内具有非常重要的意义。
附图说明
图1是本发明成品结构示意图一；
图2是本发明成品结构示意图二；
图3是本发明夹层包裹件结构示意图一；
图4是本发明夹层包裹件结构示意图二；
图5是本发明夹层包裹件内部插针结构示意图一；
图6是本发明夹层包裹件内部插针结构示意图二。
图中：1.外层包裹件；2.安装孔保护金属套；3.插针；4.盖板正面的插针端头。
具体实施方式
下面结合附图对本发明作进一步说明：
一种EGR阀传感器盖板注塑成型工艺，该工艺基于相应的注塑机和注塑模具来实施，包括如下操作步骤：
A.首先在注塑机中注塑成型包有插针3的夹层包裹件；
B.检验步骤A中的产物，剔除不良品，将合格品放置一边以备用；
C.对步骤B的产物进行二次加工，将合格的夹层包裹件包裹在外层包裹件1内，外层包裹件1由注塑机注塑成型；
D.步骤C中的产物即为EGR阀传感器盖板成品。
优选地，所述步骤A包括以下分步骤：
A1)预先开发制作所述夹层包裹件相应的注塑模具Ⅰ；
A2)原料预处理：将原料放入烘箱进行2-3小时的烘干处理，并将原料加热到80-95℃；
A3)合模并定位插针3：注塑机合模，并利用注塑模具Ⅰ内的顶针将所述插针3定位在注塑模具Ⅰ的型腔内；
A4)注塑机和注塑模具Ⅰ加热预处理：将注塑机中的螺筒加热到270-295℃，将注塑机中的热流道加热到275-285℃，将注塑模具Ⅰ加热到160-190℃；
A5)塑化：将步骤A2预处理好的原料添加到预加热后的螺筒中，加热至熔融状态；
A6)射胶注塑：将步骤A5的产物经预加热后的热流道的射咀注塑到预加热后的注塑模具Ⅰ内；
A7)冷却成型；
A8)开模取件：注塑模具Ⅰ内的顶针将模具上的工件托起，使之脱离模具，脱离模具后工人取件。
优选地，所述步骤C包括以下分步骤：
C1)预先开发制作外层包裹件1相应的注塑模具Ⅱ；
C2)原料预处理：将原料放入烘箱进行2-3小时的烘干处理，并将原料加热到80-95℃；
C3)合模并定位插针3：注塑机合模，并利用注塑模具Ⅱ内的顶针将夹层包裹件以及安装孔保护金属套2定位在注塑模具Ⅱ的型腔内；
C4)注塑机和注塑模具加热预处理：将注塑机中的螺筒加热到270-295℃，将注塑机中的热流道加热到275-285℃，将注塑模具Ⅰ加热到160-190℃；
C5)塑化：将步骤C2预处理好的原料添加到预加热后的螺筒中，加热至熔融状态；
C6)射胶注塑：将步骤C5的产物经预加热后的热流道的射咀注塑到预加热后的注塑模具Ⅱ内；
C7)冷却成型；
C8)开模取件：注塑模具Ⅱ内的顶针将模具上的工件托起，使之脱离模具，脱离模具后工人取件。
优选地，所述插针3的数量为五，五根所述插针3相互无电气接触，且五根插针3的十个端头均露于盖板表体。
优选地，所述合模分为快速锁模阶段、低压锁模阶段、高压锁模阶段；所述快速锁模阶段的压力为38-42Mpa，速度为26-30m/s，位置参数为10mm；所述 低压锁模阶段的压力为2-4Mpa，速度为18-22m/s，位置参数为1000P；所述高压锁模阶段的压力为80-90Mpa，速度为42-46m/s，位置参数为100P。
优选地，所述开模分为慢速开模阶段、快速开模阶段以及减速开模阶段；所述慢速开模阶段的压力为80-90Mpa，速度为18-22m/s，位置参数为1600P；所述快速开模阶段的压力为38-42Mpa,速度为28-32m/s，位置参数为250mm；所述减速开模阶段的压力为10-15Mpa，速度为10-14m/s，位置参数为300mm。
优选地，所述射胶注塑步骤中的射胶分为三个阶段，其中，射胶一段的压力为40-46Mpa，速度为98-100m/s，位置参数为3mm；射胶二段的压力为28-32Mpa，速度为98-100mm，位置参数为0；射胶三段的压力为18-22Mpa，速度为98-100mm，位置参数为0。
优选地，所述注塑模具Ⅰ的型腔表体进行毛面处理。
优选地，所述毛面通过电火花强化机实现。
优选地，所述原料为PPS塑料。
实施例1：
本实施例是基于相应的注塑机和注塑模具来实施，注塑机的型号为MA1600Ⅱ/540,本实施例工艺方法包括如下操作步骤：
A.首先在注塑机中注塑成型包有插针3的夹层包裹件；
B.检验步骤A中的产物，剔除不良品，将合格品放置一边以备用；
C.对步骤B的产物进行二次加工，将合格的夹层包裹件包裹在外层包裹件1内，外层包裹件1由注塑机注塑成型；
D.步骤C中的产物即为EGR阀传感器盖板成品。
本实施例夹层包裹件会被密闭包裹在外层包裹件内构成一个整体，从而有效避免顶针眼处的插针与热废气直接接触；且夹层包裹件被包裹在外层包裹件内，起到良好的密闭作用，插针、线路板不易受到水雾腐蚀，线路板失效率、产品不良率大幅度下降，盖板的使用寿命明显大幅度提高。
实施例2：
本实施例是基于相应的注塑机和注塑模具来实施，注塑机的型号为MA1600Ⅱ/540,本实施例工艺方法包括如下操作步骤：
A.首先在注塑机中注塑成型包有插针3的夹层包裹件；
B.检验步骤A中的产物，剔除不良品，将合格品放置一边以备用；
C.对步骤B的产物进行二次加工，将合格的夹层包裹件包裹在外层包裹件1内，外层包裹件1由注塑机注塑成型；
D.步骤C中的产物即为EGR阀传感器盖板成品。
其中，步骤A包括以下分步骤：
A1)预先开发制作所述夹层包裹件相应的注塑模具Ⅰ；
A2)原料预处理：将原料放入烘箱进行3小时的烘干处理，并将原料加热到95℃；
A3)合模并定位插针3：注塑机合模，并利用注塑模具Ⅰ内的顶针将所述插针3定位在注塑模具Ⅰ的型腔内；合模分为快速锁模阶段、低压锁模阶段、高压锁模阶段；快速锁模阶段的压力为40Mpa，速度为28m/s，位置参数为10mm；低压锁模阶段的压力为2Mpa，速度为20m/s，位置参数为1000P；高压锁模阶段的压力为85Mpa，速度为45m/s，位置参数为100P。
A4)注塑机和注塑模具Ⅰ加热预处理：将注塑机中的螺筒加热到283℃，将注塑机中的热流道加热到280℃，将注塑模具Ⅰ加热到180℃；
A5)塑化：将步骤A2预处理好的原料添加到预加热后的螺筒中，加热至熔融状态；
A6)射胶注塑：将步骤A5的产物经预加热后的热流道的射咀注塑到预加热后的注塑模具Ⅰ内；其中射胶分为三个阶段，射胶一段的压力为42Mpa，速度为99m/s，位置参数为3mm；射胶二段的压力为30Mpa，速度为99mm，位置参数为0；射胶三段的压力为20Mpa，速度为99mm，位置参数为0。
A7)冷却成型；
A8)开模取件：注塑模具Ⅰ内的顶针将模具上的工件托起，使之脱离模具，脱离模具后工人取件。开模分为慢速开模阶段、快速开模阶段以及减速开模阶段；慢速开模阶段的压力为85Mpa，速度为20m/s，位置参数为1600P；快速开模阶段的压力为40Mpa,速度为30m/s，位置参数为250mm；减速开模阶段的压力为13Mpa，速度为12m/s，位置参数为300mm。
步骤C包括以下分步骤：
C1)预先开发制作外层包裹件1相应的注塑模具Ⅱ；
C2)原料预处理：将原料放入烘箱进行3小时的烘干处理，并将原料加热到95℃；
C3)合模并定位插针3：注塑机合模，并利用注塑模具Ⅱ内的顶针将夹层包裹件以及安装孔保护金属套2定位在注塑模具Ⅱ的型腔内；合模分为快速锁模阶段、低压锁模阶段、高压锁模阶段；快速锁模阶段的压力为40Mpa，速度为28m/s，位置参数为10mm；低压锁模阶段的压力为2Mpa，速度为20m/s，位置参数为1000P；高压锁模阶段的压力为85Mpa，速度为45m/s，位置参数为100P。
C4)注塑机和注塑模具加热预处理：将注塑机中的螺筒加热到283℃，将注塑机中的热流道加热到280℃，将注塑模具Ⅰ加热到180℃；
C5)塑化：将步骤C2预处理好的原料添加到预加热后的螺筒中，加热至熔融状态；
C6)射胶注塑：将步骤C5的产物经预加热后的热流道的射咀注塑到预加热后的注塑模具Ⅱ内；其中射胶分为三个阶段，射胶一段的压力为42Mpa，速度为99m/s，位置参数为3mm；射胶二段的压力为30Mpa，速度为99mm，位置参数为0；射胶三段的压力为20Mpa，速度为99mm，位置参数为0。
C7)冷却成型；
C8)开模取件：注塑模具Ⅱ内的顶针将模具上的工件托起，使之脱离模具，脱离模具后工人取件。开模分为慢速开模阶段、快速开模阶段以及减速开模阶段；慢速开模阶段的压力为85Mpa，速度为20m/s，位置参数为1600P；快速开模阶段的压力为40Mpa,速度为30m/s，位置参数为250mm；减速开模阶段的压力为13Mpa，速度为12m/s，位置参数为300mm。
本实施例插针的数量为五，五根插针相互无电气接触，且五根插针的十个端头均露于盖板表体。
本实施例构思巧妙，将五根插针单独拿出作为夹层包裹件单独注塑，插针上的12个顶针眼仅会留在夹层包裹件上，而夹层包裹件会被密闭包裹在外层包裹件内构成一个整体，从而有效避免顶针眼处的插针与热废气直接接触；且夹层包裹件被包裹在外层包裹件内，起到良好的密闭作用，插针、线路板不易受到水雾腐蚀，线路板失效率、产品不良率大幅度下降，盖板的使用寿命明显大幅度提高；本实施例解决了企业生产EGR阀传感器盖板的大难题，为企业创造了非常可观的经济效益，同时也创造了显著地社会效益，本实施例在EGR阀传感器盖板生产技术领域内具有非常重要的意义。
实施例3：
实施例1和实施例2是EGR阀传感器盖板是改进后的第一代产品，从实施例1和实施例2可以看出夹层包裹件定位时也是通过注塑模具Ⅰ的顶针固定定位的，所以成品上会留下定位夹层包裹件的顶针眼，一般定位住夹层包裹件的顶针眼有三个。夹层包裹件是注塑包裹在外层包裹件1内的，虽然具备良好的密闭不漏气性能，但不能完全做到密闭不漏气，将实施例1、实施例2的成品进行漏气性能检测发现，确实有极少量漏气现象。分析原因主要是因为夹层包裹件表体较光滑，在外层包裹件1注塑过程中不能完全与外层包裹件1无缝隙融合一体。只要有漏气现象就会存在插针、线路板失效的问题，只是失效时间的早迟问题。
为解决此问题，本实施例在实施例2的基础上，利用电火花强化机将注塑模具Ⅰ的型腔表体进行毛面处理。电火花强化机的型号为D91250。
利用电火花强化机将注塑模具Ⅰ的型腔表体进行毛面处理，注塑出来的夹层包裹件表体就会呈毛面不光滑表体。
试验发现实施例3生产出的EGR阀传感器盖板完全达到密闭状态，完全不漏气，也就是说由水雾造成的线路板失效、插件腐蚀的概率为零。分析原因主要有两个因素决定其能达到完全密闭状态：一是毛面表体使得夹层包裹件与外层包裹件融合一体，接触更为紧密，从而达到完全密闭状态；二是毛面表体，气体走向弯弯曲曲，阻力过大，还未到达线路板位置气体就已消失，所以能达到完全密闭状态。
本实施例构思巧妙，注塑模具Ⅰ的型腔表体进行毛面处理，使得毛面夹层包裹件与外层包裹件密闭融合一体，达到完全密闭状态，插针、线路板完全不会因水雾而腐蚀，插针腐蚀、线路板失效率为零，盖板的使用寿命很高；本实施例解决了企业生产EGR阀传感器盖板的大难题，为企业创造了非常可观的经济效益，同时也创造了显著地社会效益，本实施例在EGR阀传感器盖板生产技术领域内具有非常重要的意义。
综上所述，仅为本发明的较佳实施例而已，并非用来限定本发明实施的范围，凡依本发明权利要求范围所述的形状、构造、特征及精神所为的均等变化与修饰，均应包括于本发明的权利要求范围内。

Claims (10)

  1. 一种EGR阀传感器盖板注塑成型工艺，该工艺基于相应的注塑机和注塑模具来实施，其特征在于，包括如下操作步骤：
    A.首先在注塑机中注塑成型包有插针的夹层包裹件；
    B.检验步骤A中的产物，剔除不良品，将合格品放置一边以备用；
    C.对步骤B的产物进行二次加工，将合格的夹层包裹件包裹在外层包裹件内，外层包裹件由注塑机注塑成型；
    D.步骤C中的产物即为EGR阀传感器盖板成品。
  2. 根据权利要求1所述的EGR阀传感器盖板注塑成型工艺，其特征在于，所述步骤A包括以下分步骤：
    A1)预先开发制作所述夹层包裹件相应的注塑模具Ⅰ；
    A2)原料预处理：将原料放入烘箱进行2-3小时的烘干处理，并将原料加热到80-95℃；
    A3)合模并定位插针：注塑机合模，并利用注塑模具Ⅰ内的顶针将所述插针定位在注塑模具Ⅰ的型腔内；
    A4)注塑机和注塑模具Ⅰ加热预处理：将注塑机中的螺筒加热到270-295℃，将注塑机中的热流道加热到275-285℃，将注塑模具Ⅰ加热到160-190℃；
    A5)塑化：将步骤A2预处理好的原料添加到预加热后的螺筒中，加热至熔融状态；
    A6)射胶注塑：将步骤A5的产物经预加热后的热流道的射咀注塑到预加热后的注塑模具Ⅰ内；
    A7)冷却成型；
    A8)开模取件：注塑模具Ⅰ内的顶针将模具上的工件托起，使之脱离模具，脱离模具后工人取件。
  3. 根据权利要求1所述的EGR阀传感器盖板注塑成型工艺，其特征在于，所述步骤C包括以下分步骤：
    C1)预先开发制作外层包裹件相应的注塑模具Ⅱ；
    C2)原料预处理：将原料放入烘箱进行2-3小时的烘干处理，并将原料加 热到80-95℃；
    C3)合模并定位插针：注塑机合模，并利用注塑模具Ⅱ内的顶针将夹层包裹件以及安装孔保护金属套定位在注塑模具Ⅱ的型腔内；
    C4)注塑机和注塑模具加热预处理：将注塑机中的螺筒加热到270-295℃，将注塑机中的热流道加热到275-285℃，将注塑模具Ⅰ加热到160-190℃；
    C5)塑化：将步骤C2预处理好的原料添加到预加热后的螺筒中，加热至熔融状态；
    C6)射胶注塑：将步骤C5的产物经预加热后的热流道的射咀注塑到预加热后的注塑模具Ⅱ内；
    C7)冷却成型；
    C8)开模取件：注塑模具Ⅱ内的顶针将模具上的工件托起，使之脱离模具，脱离模具后工人取件。
  4. 根据权利要求1所述的EGR阀传感器盖板注塑成型工艺，其特征在于：所述插针的数量为五，五根所述插针相互无电气接触，且五根插针的十个端头均露于盖板表体。
  5. 根据权利要求2或3所述的EGR阀传感器盖板注塑成型工艺，其特征在于：所述合模分为快速锁模阶段、低压锁模阶段、高压锁模阶段；所述快速锁模阶段的压力为38-42Mpa，速度为26-30m/s，位置参数为10mm；所述低压锁模阶段的压力为2-4Mpa，速度为18-22m/s，位置参数为1000P；所述高压锁模阶段的压力为80-90Mpa，速度为42-46m/s，位置参数为100P。
  6. 根据权利要求2或3所述的EGR阀传感器盖板注塑成型工艺，其特征在于：所述开模分为慢速开模阶段、快速开模阶段以及减速开模阶段；所述慢速开模阶段的压力为80-90Mpa，速度为18-22m/s，位置参数为1600P；所述快速开模阶段的压力为38-42Mpa,速度为28-32m/s，位置参数为250mm；所述减速开模阶段的压力为10-15Mpa，速度为10-14m/s，位置参数为300mm。
  7. 根据权利要求2或3所述的EGR阀传感器盖板注塑成型工艺，其特征在于：所述射胶注塑步骤中的射胶分为三个阶段，其中，射胶一段的压力为40-46 Mpa，速度为98-100m/s，位置参数为3mm；射胶二段的压力为28-32Mpa，速度为98-100mm，位置参数为0；射胶三段的压力为18-22Mpa，速度为98-100mm，位置参数为0。
  8. 根据权利要求1所述的EGR阀传感器盖板注塑成型工艺，其特征在于：所述注塑模具Ⅰ的型腔表体进行毛面处理。
  9. 根据权利要求8所述的EGR阀传感器盖板注塑成型工艺，其特征在于：所述毛面通过电火花强化机实现。
  10. 根据权利要求1所述的EGR阀传感器盖板注塑成型工艺，其特征在于：所述原料为PPS塑料。
PCT/CN2018/114576 2018-10-26 2018-11-08 Egr阀传感器盖板注塑成型工艺 WO2020082428A1 (zh)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1282097A (zh) * 1999-07-26 2001-01-31 三星电子株式会社 用于形成变压器线圈的树脂模制件的方法
CN201522331U (zh) * 2010-02-11 2010-07-07 上海海拉电子有限公司 传感器壳体上盖
JP2011106850A (ja) * 2009-11-13 2011-06-02 Aisan Industry Co Ltd 回転角検出装置の製造方法
CN102601919A (zh) * 2012-03-26 2012-07-25 哈姆林电子(苏州)有限公司 传感器注塑成型工艺
CN204439095U (zh) * 2015-02-03 2015-07-01 江苏凯龙宝顿动力科技有限公司 用于egr阀的位置传感器
CN206930299U (zh) * 2017-07-13 2018-01-26 嘉默传感技术(上海)有限公司 一种具有内部双层包塑结构的汽车传感器
CN207650320U (zh) * 2017-12-28 2018-07-24 无锡隆盛科技股份有限公司 用于测试egr阀传感器盖板的检测装置

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1282097A (zh) * 1999-07-26 2001-01-31 三星电子株式会社 用于形成变压器线圈的树脂模制件的方法
JP2011106850A (ja) * 2009-11-13 2011-06-02 Aisan Industry Co Ltd 回転角検出装置の製造方法
CN201522331U (zh) * 2010-02-11 2010-07-07 上海海拉电子有限公司 传感器壳体上盖
CN102601919A (zh) * 2012-03-26 2012-07-25 哈姆林电子(苏州)有限公司 传感器注塑成型工艺
CN204439095U (zh) * 2015-02-03 2015-07-01 江苏凯龙宝顿动力科技有限公司 用于egr阀的位置传感器
CN206930299U (zh) * 2017-07-13 2018-01-26 嘉默传感技术(上海)有限公司 一种具有内部双层包塑结构的汽车传感器
CN207650320U (zh) * 2017-12-28 2018-07-24 无锡隆盛科技股份有限公司 用于测试egr阀传感器盖板的检测装置

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