CN115071218A - Inner pipe and outer pipe of oil injection electromagnetic valve of automobile gearbox and injection molding process of inner pipe and outer pipe - Google Patents
Inner pipe and outer pipe of oil injection electromagnetic valve of automobile gearbox and injection molding process of inner pipe and outer pipe Download PDFInfo
- Publication number
- CN115071218A CN115071218A CN202210644103.6A CN202210644103A CN115071218A CN 115071218 A CN115071218 A CN 115071218A CN 202210644103 A CN202210644103 A CN 202210644103A CN 115071218 A CN115071218 A CN 115071218A
- Authority
- CN
- China
- Prior art keywords
- pipe
- injection molding
- inner pipe
- outer pipe
- parts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000001746 injection moulding Methods 0.000 title claims abstract description 58
- 238000002347 injection Methods 0.000 title claims abstract description 13
- 239000007924 injection Substances 0.000 title claims abstract description 13
- 239000003365 glass fiber Substances 0.000 claims abstract description 45
- 239000002184 metal Substances 0.000 claims abstract description 28
- 239000002994 raw material Substances 0.000 claims abstract description 27
- 239000004952 Polyamide Substances 0.000 claims abstract description 25
- 229920002647 polyamide Polymers 0.000 claims abstract description 25
- 239000012745 toughening agent Substances 0.000 claims abstract description 21
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 16
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 16
- 239000012530 fluid Substances 0.000 claims description 20
- 239000000047 product Substances 0.000 claims description 12
- 230000008676 import Effects 0.000 claims description 11
- 239000011265 semifinished product Substances 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 7
- 238000004804 winding Methods 0.000 claims description 7
- 239000004033 plastic Substances 0.000 claims description 6
- 229920003023 plastic Polymers 0.000 claims description 6
- 238000003860 storage Methods 0.000 claims description 6
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 3
- 229910000077 silane Inorganic materials 0.000 claims description 3
- 238000009966 trimming Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 238000007788 roughening Methods 0.000 claims 1
- 238000004513 sizing Methods 0.000 claims 1
- 239000007769 metal material Substances 0.000 abstract description 7
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 12
- 239000000243 solution Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 206010063659 Aversion Diseases 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000080 wetting agent Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004049 embossing Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B1/00—Layered products having a non-planar shape
- B32B1/08—Tubular products
-
- 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
- B29C45/1418—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 the inserts being deformed or preformed, e.g. by the injection pressure
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/08—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of synthetic resin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/18—Layered products comprising a layer of synthetic resin characterised by the use of special additives
- B32B27/20—Layered products comprising a layer of synthetic resin characterised by the use of special additives using fillers, pigments, thixotroping agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/34—Layered products comprising a layer of synthetic resin comprising polyamides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/06—Polyamides derived from polyamines and polycarboxylic acids
-
- 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
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L9/00—Rigid pipes
- F16L9/14—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups
- F16L9/147—Compound tubes, i.e. made of materials not wholly covered by any one of the preceding groups comprising only layers of metal and plastics with or without reinforcement
-
- 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
- B29L2023/00—Tubular articles
- B29L2023/22—Tubes or pipes, i.e. rigid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
- B32B2262/101—Glass fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2597/00—Tubular articles, e.g. hoses, pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2605/00—Vehicles
- B32B2605/08—Cars
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2203/00—Applications
- C08L2203/18—Applications used for pipes
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides an inner pipe and an outer pipe of an oil injection solenoid valve of an automobile gearbox and an injection molding process thereof, wherein the inner pipe and the outer pipe comprise an inner pipe and an outer pipe, metal wires are arranged in the inner pipe and the outer pipe, the inner pipe and the outer pipe are made of mixed raw materials, and the mixed raw materials comprise the following components in parts by weight: 50-55 parts of polyamide, 35-40 parts of glass fiber, 5-8 parts of toughening agent and 2-5 parts of antioxidant. The invention has the following beneficial effects: by matching 50-55 parts of polyamide, 35-40 parts of glass fiber and 5-8 parts of toughening agent with metal wires, the technical problem of poor strength and toughness when the inner pipe and the outer pipe are produced by adopting non-metallic materials is solved, and the inner pipe and the outer pipe which can be produced by injection molding and have higher strength and toughness are obtained.
Description
Technical Field
The invention relates to the technical field of automobile gearboxes, in particular to an inner pipe and an outer pipe of an oil injection electromagnetic valve of an automobile gearbox and an injection molding process thereof.
Background
The speed changing box is a device for changing the speed ratio and the moving direction, is used on automobiles, tractors, ships, machine tools and various machines, and is used for changing the torque, the speed and the moving direction transmitted from a driving shaft to a driven shaft according to different working conditions. Geared gearboxes generally consist of a housing and a number of gear pairs.
And need oiling on the gear of gearbox, otherwise wear and tear generates heat easily, consequently can set up some devices of oiling on the gearbox of the car on the market at present, and can adopt the solenoid valve to control among the oiling device usually, and interior outer tube then is the steel pipe fitting of connecting the export of solenoid valve fluid, specifically as shown in figure 1, it is installed intraductal in an installation.
Because the interior outer tube need be divided into inner tube and outer tube setting, and both need interconnect fixedly, structure such as screw thread, bayonet socket or latch, simultaneously because both are the thin wall part of metal, these complicated connection structure can directly lead to the production and processing degree of difficulty of interior outer tube higher.
For solving above-mentioned problem, adopt non-metallic material to make interior outer tube through the mode of moulding plastics, can avoid because the complicated higher problem of the production and processing degree of difficulty that leads to of structure, but adopt non-metallic material, have the not enough problem of intensity toughness.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides an inner pipe and an outer pipe of an oil injection electromagnetic valve of an automobile gearbox and an injection molding process thereof, which solve the technical problems of poor strength and toughness when the inner pipe and the outer pipe are produced by adopting non-metallic materials.
According to the inner pipe and the outer pipe of the oil injection solenoid valve of the automobile gearbox, which are disclosed by the embodiment of the invention, the inner pipe and the outer pipe comprise an inner pipe and an outer pipe, metal wires are arranged in the inner pipe and the outer pipe, the inner pipe and the outer pipe are made of mixed raw materials, and the mixed raw materials comprise the following components in parts by weight; 50-55 parts of polyamide, 35-40 parts of glass fiber, 5-8 parts of toughening agent and 2-5 parts of antioxidant.
The technical principle of the invention is as follows: the polyamide is adopted to replace the original metal material, the toughness and the strength of the prepared inner pipe and the prepared outer pipe reach the standard through the glass fiber and the toughening agent, the antioxidant is used for enhancing the oxidation resistance of the inner pipe and the outer pipe, and the metal wire is used for increasing the compressive strength of the inner pipe and the outer pipe.
The proportion of 50-55 parts of polyamide, 35-40 parts of glass fiber and 5-8 parts of toughening agent is adopted, because the inner and outer pipes which reach the standard can be prepared by only adopting the polyamide and the glass fiber, but defects such as bubbling, injection molding loss and the like easily occur after injection molding, waste products easily occur, the rejection rate is more than 20%, in order to solve the problem of large rejection rate, 50-55 parts of polyamide is adopted to be matched with 35-40 parts of glass fiber, so that the rejection rate is lower than 5%, the inner and outer pipes produced in the way have the problem of insufficient toughness, and therefore, 5-8 parts of toughening agent is added to increase the toughness, so that the toughness of the inner and outer pipes reaches the standard.
Compared with the prior art, the invention has the following beneficial effects: by matching 50-55 parts of polyamide, 35-40 parts of glass fiber and 5-8 parts of toughening agent with metal wires, the technical problem of poor strength and toughness when the inner pipe and the outer pipe are produced by adopting non-metallic materials is solved, and the inner pipe and the outer pipe which can be produced by injection molding and have higher strength and toughness are obtained.
Further, the inner tube sets up in the outer tube inboard, inner tube one end is equipped with the pressure release mouth, the inner tube other end is equipped with the fluid import, the inner tube is close to pressure release mouth one side with the outer tube and is equipped with the fluid export that link up, the outer tube is close to fluid import one end and is equipped with the step connecting portion.
Furthermore, the step connection portion of outer tube is equipped with the wire, be equipped with the wire between the fluid import of inner tube and the fluid export for the intensity of reinforcing outward appearance step connection portion and the intensity of inner tube.
Further, the step connecting portion of outer tube all divide into inlayer and skin with the inner tube, inlayer and skin adopt the secondary to mould plastics and are connected, the wire is fixed between inlayer and skin, the inlayer and whole outer tube integrated into one piece of the step connecting portion of outer tube, it is protruding to be equipped with the annular on the inlayer both sides of step connecting portion, the fluid import and the fluid export of the inlayer of inner tube are close to one side each other and also are equipped with the annular arch, the wire is fixed between two annular archs on the inlayer of step connecting portion or the inlayer of inner tube, adopts the annular arch to inject the position of wire, and the wire aversion when avoiding moulding plastics.
Further, the diameter of the glass fiber is 7-12 μm, and the length is 3 mm.
Furthermore, the surface of the glass fiber is coated with a silane-based wetting agent, so that the adhesion degree of the glass fiber and the polyamide is improved.
According to the embodiment of the invention, the injection molding process of the inner pipe and the outer pipe of the oil injection solenoid valve of the automobile gearbox comprises the following steps:
s1, mixing the raw materials: mixing polyamide, glass fiber, a toughening agent and an antioxidant according to parts by weight to obtain a mixed raw material;
s2, first injection molding: respectively injecting the mixed raw materials in the step S1 into semi-finished product molds of the inner pipe and the outer pipe through an injection molding machine to obtain a semi-finished product inner pipe and an outer pipe;
s3, winding the metal wire: winding metal wires on the semi-finished inner pipe and the semi-finished outer pipe respectively in the step S2;
s4, secondary injection molding: respectively placing the semi-finished inner pipe and the semi-finished outer pipe wound with the metal wires in the step S3 into finished product molds of the inner pipe and the outer pipe, and respectively injecting the mixed raw materials obtained in the step S1 into the finished product molds of the inner pipe and the outer pipe through an injection molding machine to obtain finished inner pipe and outer pipe;
s5, trimming: and finishing the outer surfaces of the finished inner pipe and the finished outer pipe obtained in the step S4.
The inner pipe and the outer pipe are produced in an injection molding mode, the original metal processing mode is replaced, the finished product rate of the inner pipe and the outer pipe is higher, and the production industry is simpler.
Further, the semi-finished mold and the finished mold in the steps S2 and S4 need to be preheated, and the preheating temperature is 30-35 ℃.
Further, when the injection molding is performed in the S2 and S4 steps, the injection molding speed of the injection molding machine is 12 +/-5 CM/S, the injection molding pressure is 65 +/-5 MPa, the storage speed is 60 +/-10 CM/S, the storage pressure is 110 +/-10 MPa, the injection molding temperature is 255-285 ℃ and the injection molding time is 5 +/-2S.
Further, the surface of the wire in the step S3 is subjected to galling treatment, and the temperature of the wire when being wound is 120 ℃.
Drawings
Fig. 1 is a schematic view of an inner and outer pipe installation structure according to an embodiment of the present invention.
Fig. 2 is a schematic view of an inner tube structure according to an embodiment of the present invention.
Fig. 3 is a schematic structural diagram of an outer tube according to an embodiment of the present invention.
FIG. 4 is a flow chart of an injection molding process for inner and outer tubes according to an embodiment of the present invention.
In the above drawings: 1. an inner tube; 11. a pressure relief port; 12. an oil inlet; 13. an oil outlet; 2. an outer tube; 21. a step connecting portion; 3. a metal wire; 4. an inner layer; 5. an outer layer; 6. an annular projection; 7. an electromagnetic valve; 8. installing a pipe; 9. and a hydraulic cylinder.
Detailed Description
The technical solution of the present invention is further explained with reference to the drawings and the embodiments.
As shown in fig. 1-3, the inner tube and the outer tube of the oil injection solenoid valve of the automobile transmission comprise an inner tube 1 and an outer tube 2, a metal wire 3 is spirally wound in the inner tube 1 and the outer tube 2, the inner tube 1 is specifically arranged at the inner side of the outer tube 2, and one end of the inner tube 1 is provided with a pressure relief port 11 for pressure relief; the other end of the inner tube 1 is provided with an oil inlet 12 which is used for connecting the electromagnetic valve 7 and allowing oil to enter the inner tube 1; one sides of the inner tube 1 and the outer tube 2, which are close to the pressure relief port 11, are provided with a through oil outlet 13 for guiding oil out, so that the gears of the gearbox are cooled and lubricated; outer tube 2 is close to fluid import 12 one end and is equipped with step connecting portion 21, and step connecting portion 21 department is connected with pneumatic cylinder 9, and there is the passageway at pneumatic cylinder 9 center for the pipeline of solenoid valve 7 passes and is connected with fluid import 12, and is concrete to promote inner tube 1 and the motion of outer tube 2 through pneumatic cylinder 9, realizes that the pressure release leads with normal fluid.
Like 2-3 outer tube 2's step connecting portion 21 and inner tube 1 all divide into inlayer 4 and outer 5, inlayer 4 and outer 5 adopt the secondary to mould plastics to be connected, wire 3 fixes between inlayer 4 and outer 5, inlayer 4 and whole outer tube 2 integrated into one piece of step connecting portion 21 of outer tube 2, be equipped with annular bulge 6 on the inlayer 4 both sides of step connecting portion 21, the fluid import 12 of inlayer 4 of inner tube 1 and fluid export 13 are close to each other one side and also are equipped with annular bulge 6, wire 3 fixes between two annular bulge 6 on inlayer 4 of step connecting portion 21 or inlayer 4 of inner tube 1, the position of wire 3 is injectd through annular bulge 6, wire 3 aversion when avoiding moulding plastics.
The inner pipe 1 and the outer pipe 2 are made of mixed raw materials, and the mixed raw materials comprise the following components in parts by weight: 50-55 parts of polyamide, 35-40 parts of glass fiber, 5-8 parts of toughening agent and 2-5 parts of antioxidant, wherein the surface of the glass fiber is coated with silane-based wetting agent, so that the glass fiber and the polyamide are bonded to form a bridge, the specific polyamide can adopt PA66, the toughening agent can adopt an AC1330 type toughening agent, and the antioxidant can adopt a PS800 type antioxidant; the diameter of the glass fiber is 7-12 μm, and the length is 3 mm; the glass fiber with the diameter of 7-12 mu m is adopted to ensure that the surfaces of the manufactured inner and outer tubes are smooth and have no rough feeling, even obvious fibrous structures are found, and the length of 3mm is used for ensuring that the glass fiber can not be clamped during injection molding, so that the inner and outer tubes are rejected.
The injection molding process of the inner pipe and the outer pipe of the oil injection solenoid valve 7 of the automobile gearbox as shown in figure 4 comprises the following steps:
s1, mixing the raw materials: mixing polyamide, glass fiber, a toughening agent and an antioxidant according to parts by weight to obtain a mixed raw material, and drying the mixed raw material synchronously at the temperature of 120 ℃ for 4 hours during specific mixing.
S2, first injection molding: and (4) respectively injecting the mixed raw materials in the step S1 into semi-finished product molds of the inner pipe 1 and the outer pipe 2 through an injection molding machine to obtain the semi-finished product inner pipe 1 and the semi-finished product outer pipe 2.
S3, winding the metal wire: the metal wires 3 are respectively wound on the semi-finished inner tube 1 and the semi-finished outer tube 2 which are manufactured in the step 2, the metal wires 3 are specifically wound between the step connecting part 21 of the semi-finished outer tube 2 and the oil inlet 12 and the oil outlet 13 of the semi-finished inner tube 1, the metal wires 3 need to pass through two embossing rollers before being wound, the surfaces of the metal wires are pressed out of concave parts, the effect of napping is achieved, the metal wires are convenient to be bonded with polyamide and stripping fibers, and the temperature of the metal wires 3 during winding is 120 ℃.
S4, secondary injection molding: and (3) respectively placing the semi-finished inner pipe 1 and the semi-finished outer pipe 2 wound with the metal wires 3 in the step S3 into finished product molds of the inner pipe 1 and the outer pipe 2, and respectively injecting the mixed raw materials obtained in the step S1 into the finished product molds of the inner pipe 1 and the outer pipe 2 through an injection molding machine to obtain finished products of the inner pipe 1 and the outer pipe 2.
S5, trimming: and finishing the outer surfaces of the finished inner pipe 1 and the finished outer pipe 2 obtained in the step S4.
The semi-finished product mold and the finished product mold in the steps S2 and S4 need to be preheated, the preheating temperature is 30-35 ℃, the preheating temperature of the front mold of the semi-finished product mold and the finished product mold is 35 ℃, the preheating temperature of the rear mold is 30 ℃, and the mold damage is avoided.
When the injection molding is carried out in the steps S2 and S4, the injection molding speed of the injection molding machine is 12 +/-5 CM/S, the injection molding pressure is 65 +/-5 MPa, the storage speed is 60 +/-10 CM/S, the storage pressure is 110 +/-10 MPa, the injection molding temperature is 255 +/-285 ℃, the injection molding time is 5 +/-2S, and the rejection rate is controlled within 5 percent by matching with 50-55 parts of polyamide, 35-40 parts of glass fiber and 5-8 parts of toughening agent.
Example 1
50 parts of polyamide, 35 parts of glass fiber, 5 parts of toughening agent and 2 parts of antioxidant are mixed to form a mixed raw material, and the inner pipe and the outer pipe are prepared by the injection molding process, wherein the diameter of the glass fiber is 7 micrometers, and the length of the glass fiber is 3 mm.
Example 2
55 parts of polyamide, 40 parts of glass fiber, 8 parts of toughening agent and 5 parts of antioxidant are mixed to form a mixed raw material, and the inner pipe and the outer pipe are prepared by the injection molding process, wherein the diameter of the glass fiber is 12 micrometers, and the length of the glass fiber is 3mm
Comparative example 1
50 parts of polyamide, 35 parts of glass fiber, 5 parts of toughening agent and 2 parts of antioxidant are mixed to form a mixed raw material, and the inner pipe and the outer pipe are prepared by the injection molding process, wherein the diameter of the glass fiber is 7 micrometers, the length of the glass fiber is 3mm, but no metal wire 3 is added.
Comparative example 2
An inner pipe and an outer pipe made of stainless steel 304 are adopted.
Comparative example 3
50 parts of polyamide, 35 parts of glass fiber, 5 parts of toughening agent and 2 parts of antioxidant are mixed to form a mixed raw material, and the inner pipe and the outer pipe are prepared by the injection molding process, wherein the diameter of the glass fiber is 15 micrometers, and the length of the glass fiber is 3 mm.
Comparative example 4
55 parts of polyamide, 40 parts of glass fiber, 8 parts of toughening agent and 5 parts of antioxidant are mixed to form a mixed raw material, and the inner pipe and the outer pipe are prepared by the injection molding process, wherein the diameter of the glass fiber is 12 micrometers, and the length of the glass fiber is 5 mm.
Comparative example 5
50 parts of polyamide, 50 parts of glass fiber and 2 parts of antioxidant are mixed to obtain a mixed raw material, and the inner pipe and the outer pipe are prepared by the injection molding process, wherein the diameter of the glass fiber is 7 micrometers, and the length of the glass fiber is 3 mm.
The tensile strength, compressive strength and toughness values of the inner tube 1 of examples 1-2 and comparative examples 1-5 were measured, as specified in the following table:
with reference to the above table, one can see:
comparing example 1 with comparative example 1, the compressive strength can be effectively improved by adopting the metal wire 3; comparing examples 1-2 with comparative example 2, it can be confirmed that the strength and toughness of the inner and outer pipes obtained by injection molding in the present application can meet the standards of metal materials.
1000 inner and outer tubes of examples 1-2 and comparative examples 3-5 were produced to yield the number of finished products, as specified in the following table:
with reference to the above table, one can see:
comparing the example 1 with the comparative example 3, the adoption of the glass fiber with the diameter of 7-12 μm can effectively avoid the fibrous appearance on the surfaces of the inner pipe and the outer pipe; comparing example 2 with comparative example 4, the glass fiber with 3mm can avoid the loss and the bubble holes after the inner and outer pipes are injected; comparing example 2 with comparative example 5, the scrap rate can be effectively reduced by adopting 35-40 parts of glass fiber and 5-8 parts of toughening agent to be matched with 50-55 parts of polyamide.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. The utility model provides an automotive transmission's oiling solenoid valve's interior outer tube which characterized in that: the inner pipe and the outer pipe comprise an inner pipe and an outer pipe, metal wires are arranged in the inner pipe and the outer pipe, the inner pipe and the outer pipe are made of mixed raw materials, and the mixed raw materials comprise the following components in parts by weight: 50-55 parts of polyamide, 35-40 parts of glass fiber, 5-8 parts of toughening agent and 2-5 parts of antioxidant.
2. The inner and outer tubes of an oil filling solenoid valve for an automobile transmission as claimed in claim 1, wherein: the inner tube sets up in the outer tube inboard, inner tube one end is equipped with the pressure release mouth, the inner tube other end is equipped with the fluid import, the inner tube is close to pressure release mouth one side with the outer tube and is equipped with the fluid export that link up, the outer tube is close to fluid import one end and is equipped with the step connecting portion.
3. The inner and outer tubes of an oil filling solenoid valve for an automobile transmission as claimed in claim 2, wherein: the step connecting portion of outer tube is equipped with the wire, be equipped with the wire between the fluid import of inner tube and the fluid export.
4. The inner and outer tubes of an oil filling solenoid valve for an automobile transmission as claimed in claim 3, wherein: the step connecting portion of outer tube all divide into inlayer and skin with the inner tube, inlayer and skin adopt the secondary to mould plastics and are connected, the wire is fixed between inlayer and skin, the inlayer and whole outer tube integrated into one piece of the step connecting portion of outer tube, it is protruding to be equipped with the annular on the inlayer both sides of step connecting portion, the fluid import and the fluid export of the inlayer of inner tube are close to one side each other and also are equipped with the annular arch, the wire is fixed between two annular archs on the inlayer of step connecting portion or the inlayer of inner tube.
5. The inner and outer tubes of an oil filling solenoid valve for an automobile transmission as claimed in claim 1, wherein: the diameter of the glass fiber is 7-12 μm, and the length is 3 mm.
6. The inner and outer tubes of an oil filling solenoid valve for an automobile transmission as claimed in claim 1, wherein: the surface of the glass fiber is coated with a silane-based sizing.
7. The injection molding process of the inner pipe and the outer pipe of the oil injection solenoid valve of the automobile gearbox, according to claim 1, is characterized in that: the method comprises the following steps:
s1, mixing the raw materials: mixing polyamide, glass fiber, a toughening agent and an antioxidant according to parts by weight to obtain a mixed raw material;
s2, first injection molding: respectively injecting the mixed raw materials in the step S1 into semi-finished product molds of the inner pipe and the outer pipe through an injection molding machine to obtain a semi-finished product inner pipe and an outer pipe;
s3, winding the metal wire: winding metal wires on the semi-finished inner pipe and the semi-finished outer pipe respectively in the step S2;
s4, secondary injection molding: respectively placing the semi-finished inner pipe and the semi-finished outer pipe wound with the metal wires in the step S3 into finished product molds of the inner pipe and the outer pipe, and respectively injecting the mixed raw materials obtained in the step S1 into the finished product molds of the inner pipe and the outer pipe through an injection molding machine to obtain finished inner pipe and outer pipe;
s5, trimming: and finishing the outer surfaces of the finished inner pipe and the finished outer pipe obtained in the step S4.
8. The injection molding process of the inner pipe and the outer pipe of the oil injection solenoid valve of the automobile gearbox as claimed in claim 7, wherein the injection molding process comprises the following steps: the semi-finished molds and the finished molds in the steps S2 and S4 need to be preheated, and the preheating temperature is 30-35 ℃.
9. The injection molding process of the inner pipe and the outer pipe of the oil injection solenoid valve of the automobile gearbox as claimed in claim 7, wherein the injection molding process comprises the following steps: when the injection molding is carried out in the steps S2 and S4, the injection molding speed of the injection molding machine is 12 +/-5 CM/S, the injection molding pressure is 65 +/-5 MPa, the storage speed is 60 +/-10 CM/S, the storage pressure is 110 +/-10 MPa, the injection molding temperature is 255 and 285 ℃ and the injection molding time is 5 +/-2S.
10. The injection molding process of the inner pipe and the outer pipe of the oil injection solenoid valve of the automobile gearbox as claimed in claim 7, wherein the injection molding process comprises the following steps: and (4) roughening the surface of the metal wire in the step S3, wherein the temperature of the metal wire during winding is 120 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210644103.6A CN115071218A (en) | 2022-06-09 | 2022-06-09 | Inner pipe and outer pipe of oil injection electromagnetic valve of automobile gearbox and injection molding process of inner pipe and outer pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210644103.6A CN115071218A (en) | 2022-06-09 | 2022-06-09 | Inner pipe and outer pipe of oil injection electromagnetic valve of automobile gearbox and injection molding process of inner pipe and outer pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115071218A true CN115071218A (en) | 2022-09-20 |
Family
ID=83250567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210644103.6A Pending CN115071218A (en) | 2022-06-09 | 2022-06-09 | Inner pipe and outer pipe of oil injection electromagnetic valve of automobile gearbox and injection molding process of inner pipe and outer pipe |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115071218A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927254A (en) * | 2011-08-09 | 2013-02-13 | 现代自动车株式会社 | Multilayer tube for transmission oil cooler |
| CN104540667A (en) * | 2012-08-02 | 2015-04-22 | 康蒂泰克管道有限公司 | Transfer hose, in particular for use at high temperatures |
| CN107057339A (en) * | 2017-06-02 | 2017-08-18 | 杭州本松新材料技术股份有限公司 | A kind of activeness and quietness nylon material and its preparation method and application |
| CN210686934U (en) * | 2019-09-03 | 2020-06-05 | 安徽中鼎橡塑制品有限公司 | Gear lubrication oil injection pipe for automobile transmission |
| CN213892743U (en) * | 2020-11-12 | 2021-08-06 | 深圳佳伸交通配件有限公司 | Variable speed spool and variable speed line subassembly |
-
2022
- 2022-06-09 CN CN202210644103.6A patent/CN115071218A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102927254A (en) * | 2011-08-09 | 2013-02-13 | 现代自动车株式会社 | Multilayer tube for transmission oil cooler |
| CN104540667A (en) * | 2012-08-02 | 2015-04-22 | 康蒂泰克管道有限公司 | Transfer hose, in particular for use at high temperatures |
| CN107057339A (en) * | 2017-06-02 | 2017-08-18 | 杭州本松新材料技术股份有限公司 | A kind of activeness and quietness nylon material and its preparation method and application |
| CN210686934U (en) * | 2019-09-03 | 2020-06-05 | 安徽中鼎橡塑制品有限公司 | Gear lubrication oil injection pipe for automobile transmission |
| CN213892743U (en) * | 2020-11-12 | 2021-08-06 | 深圳佳伸交通配件有限公司 | Variable speed spool and variable speed line subassembly |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209492172U (en) | A kind of FDM-3D printing shaping extruder head of continuous fiber reinforcement component | |
| CN109940054B (en) | Method for manufacturing carbon steel wire with diameter of 0.05mm | |
| CN100553821C (en) | The forming method of spiral subsection blade | |
| CN209566517U (en) | A kind of production line of fiber bar material | |
| CN109676971A (en) | A kind of production technology and its production line of profiled filament muscle material | |
| CN106623467A (en) | Cold extruder for machining sprayer shaft and machining process of sprayer shaft | |
| CN2770927Y (en) | High-strength polyethylene fiber bullet proof helmet shaping mould | |
| CN115071218A (en) | Inner pipe and outer pipe of oil injection electromagnetic valve of automobile gearbox and injection molding process of inner pipe and outer pipe | |
| CN1669766A (en) | High-strength polyethylene fiber bulletproof helmet forming method and die therefor | |
| CN105149389B (en) | Bent pipe, bent pipe machining equipment, bent pipe machining method and control method | |
| CN101712204B (en) | Method for making megawatt aerogenerator coupling middle pipe shaft | |
| CN104626618B (en) | A kind of preparation method of glass fiber reinforced polyester ether ether ketone bar | |
| CN101270843B (en) | Production method of hose elbow connection and processing device used in the method | |
| CN108081641B (en) | A kind of processing unit (plant) and processing method of full thread overlength screw rod | |
| CN115256759A (en) | Manufacturing method of aviation warning ball | |
| CN111255857B (en) | Tile pin chain and processing method thereof | |
| CN112721267A (en) | Continuous rubber coating device of rubber roll | |
| CN209379714U (en) | A kind of pretreatment mold for bend pipe | |
| CN211251390U (en) | Multilayer continuous fiber bending equipment | |
| CN107263022A (en) | A kind of method for forging and molding with reinforcement pick | |
| KR19990065849A (en) | Apparatus and method for manufacturing metal fiber for cement composition reinforcement | |
| CN216068787U (en) | Rubber roll continuous rubber coating device | |
| CN213593687U (en) | Double-station hydraulic reciprocating pultrusion production line | |
| CN2567027Y (en) | Shaping machine for glass fibre reinforced plastic pipeline | |
| CN109894568A (en) | The automobile chassis welding manufacturing method of casing |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |