CN111716667A - Production method of automobile oil tank cover - Google Patents

Production method of automobile oil tank cover Download PDF

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Publication number
CN111716667A
CN111716667A CN202010401518.1A CN202010401518A CN111716667A CN 111716667 A CN111716667 A CN 111716667A CN 202010401518 A CN202010401518 A CN 202010401518A CN 111716667 A CN111716667 A CN 111716667A
Authority
CN
China
Prior art keywords
cylinder
chamber
oil tank
cup
fixed
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
Application number
CN202010401518.1A
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Chinese (zh)
Inventor
巢冰倩
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changzhou Fuyuanxin Plastic Co ltd
Original Assignee
Changzhou Fuyuanxin Plastic Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Changzhou Fuyuanxin Plastic Co ltd filed Critical Changzhou Fuyuanxin Plastic Co ltd
Priority to CN202010401518.1A priority Critical patent/CN111716667A/en
Publication of CN111716667A publication Critical patent/CN111716667A/en
Pending legal-status Critical Current

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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C45/00Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
    • B29C45/17Component parts, details or accessories; Auxiliary operations
    • B29C45/76Measuring, controlling or regulating
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00Investigating fluid-tightness of structures
    • G01M3/02Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C2945/00Indexing scheme relating to injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould
    • B29C2945/76Measuring, controlling or regulating
    • B29C2945/76177Location of measurement
    • B29C2945/7629Moulded articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29LINDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00Other particular articles
    • B29L2031/56Stoppers or lids for bottles, jars, or the like, e.g. closures

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Cooling, Air Intake And Gas Exhaust, And Fuel Tank Arrangements In Propulsion Units (AREA)

Abstract

The invention relates to a production method of an automobile oil tank cover, which comprises the following steps: s1, drying raw materials: putting the plastic particles into a dryer for drying, wherein the drying temperature is 80-95 ℃; s2, mixing the raw materials: putting the plastic particles into a high-speed mixer, adding the graphite micropowder, the antioxidant and the lubricant, and mixing to form a mixed plastic raw material S3: putting the plastic raw material into an injection molding machine, heating and melting, injecting into a mold, injection molding, airing, and cooling to form a blank; s4, surface cleaning: cleaning the blank by using an ultrasonic cleaning machine, manually checking and deburring; s5, tightness detection: the invention provides a production method of an automobile oil tank cap, which has the advantages of simple process, convenient and fast detection and low cost, simplifies the working procedures in the production process, ensures the production quality in the detection of a tail channel working procedure, has low cost, can be assembled by self, and further saves the cost.

Description

Production method of automobile oil tank cover
Technical Field
The invention relates to the technical field of automobile oil tank caps, in particular to a production method of an automobile oil tank cap.
Background
For example, a PA66_ glass bead composite material for an automobile fuel tank cap with the patent number of CN103304993A and a preparation method thereof, a stamping method for an inner plate of the automobile fuel tank cap of CN104438944B and a fuel tank cap test bed of CN209945656U have complex production process and high detection method cost, so that a production method of the automobile fuel tank cap with simple process, convenient detection and low cost is urgently needed.
Disclosure of Invention
The invention aims to provide a production method of an automobile oil tank cap, which has the advantages of simple process, convenience and quickness in detection and low cost.
The invention is realized by the following technical scheme: the production method of the automobile fuel tank cap is characterized by comprising the following steps: the method comprises the following steps:
s1, drying raw materials: putting the plastic particles into a dryer for drying, wherein the drying temperature is 80-95 ℃;
s2, mixing the raw materials: putting the plastic particles into a high-speed mixer, adding graphite micro powder, an antioxidant and a lubricant, and mixing to form a mixed plastic raw material, wherein the mass ratio of the plastic particles to the graphite micro powder is (90-95): (1-2);
s3, injection molding: putting the plastic raw material into an injection molding machine, heating and melting, injecting into a mold, injection molding, airing, and cooling to form a blank;
s4, surface cleaning: cleaning the blank by using an ultrasonic cleaning machine, manually checking and deburring;
s5, tightness detection: and (4) carrying out air tightness detection on the oil tank cover by using a tightness detection device.
In the production method of the automobile fuel tank cap, the tightness detection device used in the step S5 comprises a workbench, a portal frame arranged on the workbench, a driving assembly and a detection tool, wherein the middle part of the portal frame is provided with an installation plate, a guide rail rod and a rotating disc, the guide rail rod is inserted on the top surface of the portal frame, the top of the guide rail rod is movably connected with the top of the portal frame, and the bottom of the guide rail rod is fixedly connected with the installation plate; the driving assembly comprises a lifting cylinder, a rotating motor, a linkage gear set and a clamping cylinder, the lifting cylinder is arranged at the top of the gantry, a telescopic rod of the lifting cylinder is fixedly connected with the mounting plate and used for driving the mounting plate to lift up and down along the guide rail rod, the rotating motor is arranged on the mounting plate, the rotating disc is arranged below the mounting plate, the linkage gear set comprises a driving gear and a driven gear, the driving gear is fixedly connected with an output shaft of the rotating motor, the driven gear is meshed with the driving gear and can drive the driven gear to rotate, a connecting shaft and a bearing are arranged in the middle of the driven gear, the connecting shaft is arranged at the center of the driven gear, the top of the connecting shaft is fixedly connected with the mounting plate, the bearing is arranged between the driven gear and the connecting shaft, the rotating motor drives the, the clamping cylinder comprises a first cylinder and a second cylinder which are fixed at the bottom of the rotating disc and are arranged in a matched mode, a first pressing block is fixed on an expansion link of the first cylinder, a second pressing block is fixed on an expansion link of the second cylinder, and the first pressing block and the second pressing block are arranged oppositely and can be close to each other or far away from each other under the driving of the first cylinder and the second cylinder; the detection tool comprises a fixing plate, an oil tank cup, a connecting air cylinder, a pressure gauge and an air source, wherein the fixing plate is fixed on the bottom surface of the portal frame, the oil tank cup and the connecting air cylinder are integrally formed and fixed on the fixing plate, and the connecting air cylinder is connected with the air source and the pressure gauge.
Furthermore, a fixed panel is installed at the top of the gantry, the lifting cylinder is installed on the fixed panel, an inserting block is arranged at the top of the guide rail rod and fixed at the top of the fixed panel, a through hole is formed in the inserting block, and the through hole is connected with the guide rail rod in a sliding mode.
Further, a gap is formed between the bottom of the driving gear and the rotating disk, and the bottom of the driving gear is prevented from rubbing against the rotating disk.
Further, the oil tank cup includes from last to down, connect gradually, integrated into one piece's cup edge, cup neck, awl ring and laminating ear, the cup edge is rolled over outwards and is formed the spacing ring, the external diameter of cup neck is less than the external diameter of spacing ring, awl ring top external diameter is less than awl ring bottom external diameter, laminating ear sets up and is greater than the projection area of awl ring in awl ring bottom and its projection area.
Furthermore, a plurality of mounting bolts which are uniformly distributed are arranged on the fitting lugs.
Further, including from last to down, intercommunication, integrated into one piece's straight section of thick bamboo chamber, transition chamber and the chamber of ventilating in the connection inflator in proper order, the internal diameter in straight section of thick bamboo chamber is even and the same, the transition chamber gets the internal diameter and outwards increases from the middle part in proper order, and the internal diameter at transition chamber both ends is the same with the internal diameter in straight section of thick bamboo chamber, and transition chamber bottom has the annular chamber with the transition chamber intercommunication, the chamber setting of ventilating is less than the minimum internal diameter in transition chamber in annular chamber bottom and the internal diameter in the chamber of ventilating.
The invention has the beneficial effects that: the invention provides the production method of the automobile oil tank cap, which has the advantages of simple process, convenience and quickness in detection and low cost, not only simplifies the working procedures in the production process, but also ensures the production quality in the detection of the tail channel working procedure, and meanwhile, the sealing detection device has low cost, can be assembled by self, and further saves the cost.
Drawings
FIG. 1 is a schematic structural view of a leak detection apparatus according to the present invention;
FIG. 2 is a schematic view of the installation structure of a portal frame, a driving assembly and a detection tool of the tightness detection device of the present invention;
FIG. 3 is a schematic structural diagram of a linkage gear set, a clamping cylinder and a detection tool of the tightness detection device of the present invention;
FIG. 4 is a schematic view showing the construction of the fuel tank cup and the connection cylinder of the sealability detection apparatus of the present invention;
fig. 5 is a sectional view of an oil tank cup and a connection cylinder of the sealability detection apparatus of the present invention;
FIG. 6 is a schematic structural view of the fuel tank cap;
fig. 7 is another structural schematic view of the fuel tank cap.
Wherein: 1. a gantry; 11. mounting a plate; 12. a guide rail rod; 13. rotating the disc; 14. fixing the panel; 2. a drive assembly; 21. a lifting cylinder; 22. a rotating electric machine; 23. a linkage gear set; 231. a driving gear; 232. a driven gear; 2321. a connecting shaft; 2322. a bearing; 241. a first cylinder; 2411. a first compact block; 242. a second cylinder; 2421. a second compact block; 3. detecting a tool; 31. a fixing plate; 32. an oil tank cup; 321. a cup rim; 322. a cup neck; 323. a conical ring; 324. fitting the ears; 325. a limiting ring; 326. installing a bolt; 33. connecting an air cylinder; 331. a straight cylindrical cavity; 332. a transition chamber; 333. a vent lumen; 334. an annular cavity; 4. a work table; 51. a fuel tank cap body; 511. a first side body; 512. a second side body; 52. a handle cover; 53. and (4) a groove.
Detailed Description
The following detailed description of the preferred embodiments of the present invention, taken in conjunction with the accompanying drawings, will make the advantages and features of the invention more readily understood by those skilled in the art, and thus will more clearly and distinctly define the scope of the invention.
Referring to fig. 1 to 4, a method for producing an automobile fuel tank cap is characterized in that: the method comprises the following steps:
s1, drying raw materials: putting the plastic particles into a dryer for drying, wherein the drying temperature is 80-95 ℃;
s2, mixing the raw materials: putting the plastic particles into a high-speed mixer, adding graphite micro powder, an antioxidant and a lubricant, and mixing to form a mixed plastic raw material, wherein the mass ratio of the plastic particles to the graphite micro powder is (90-95): (1-2);
s3, injection molding: putting the plastic raw material into an injection molding machine, heating and melting, injecting into a mold, injection molding, airing, and cooling to form a blank;
s4, surface cleaning: cleaning the blank by using an ultrasonic cleaning machine, manually checking and deburring;
s5, tightness detection: and (4) carrying out air tightness detection on the oil tank cover by using a tightness detection device.
In the production method of the automobile fuel tank cap, the tightness detection device used in the step S5 comprises a workbench 4, a portal frame 1 arranged on the workbench 4, a driving assembly 2 and a detection tool 3, wherein the middle part of the portal frame 1 is provided with an installation plate 11, a guide rail rod 12 and a rotating disc 13, the guide rail rod 12 is inserted on the top surface of the portal frame 1, the top of the guide rail rod 12 is movably connected with the top of the portal frame 1, and the bottom of the guide rail rod 12 is fixedly connected with the installation plate 11; the driving assembly 2 comprises a lifting cylinder 21, a rotating motor 22, a linkage gear set 23 and a clamping cylinder, the lifting cylinder 21 is arranged at the top of the portal frame 1, an expansion rod of the lifting cylinder 21 is fixedly connected with the mounting plate 11 and used for driving the mounting plate 11 to ascend and descend along the guide rail rod 12, the rotating motor 22 is arranged on the mounting plate 11, the rotating disc 13 is arranged below the mounting plate 11, the linkage gear set 23 comprises a driving gear 231 and a driven gear 232, the driving gear 231 is fixedly connected with an output shaft of the rotating motor 22, the driven gear 232 is meshed with the driving gear 231, the driving gear 231 can drive the driven gear 232 to rotate, a connecting shaft 2321 and a bearing 2322 are arranged in the middle of the driven gear 232, the connecting shaft 2321 is arranged at the center of the driven gear 232, the top of the connecting shaft is fixedly connected with the mounting plate 11, and the bearing 232, the rotating motor 22 drives the driving gear 231 to rotate, the driven gear 232 to rotate, and then drives the rotating disk 13 to rotate, the clamping cylinder comprises a first cylinder 241 and a second cylinder 242 which are fixed at the bottom of the rotating disk 13 and are arranged in a matched manner, a first pressing block 2411 is fixed on an expansion rod of the first cylinder 241, a second pressing block 2421 is fixed on an expansion rod of the second cylinder 242, and the first pressing block 2411 and the second pressing block 2421 are arranged oppositely and can be close to or away from each other under the driving of the first cylinder 241 and the second cylinder 242; the detection tool 3 comprises a fixing plate 31, an oil tank cup 32, a connecting air cylinder 33, a pressure gauge and an air source, the fixing plate 31 is fixed on the bottom surface of the portal frame 1, the oil tank cup 32 and the connecting air cylinder 33 are integrally formed and fixed on the fixing plate 31, and the connecting air cylinder 33 is connected with the air source and the pressure gauge.
Preferably, a fixed panel 14 is installed at the top of the portal frame 1, the lifting cylinder 21 is installed on the fixed panel 14, a penetration block is arranged at the top of the guide rail rod 12, the penetration block is fixed at the top of the fixed panel 14, a through hole is formed in the penetration block, and the through hole is slidably connected with the guide rail rod 12.
Preferably, a gap is formed between the bottom of the driving gear 231 and the rotating disk 13 to prevent the bottom of the driving gear 231 from rubbing against the rotating disk 13.
Preferably, the oil tank cup 32 includes from last to lower, connect gradually, integrated into one piece's rim of a cup 321, cup neck 322, awl ring 323 and laminating ear 324, the rim of a cup 321 is outwards turned over and is rolled over and form spacing ring 325, the external diameter of cup neck 322 is less than the external diameter of spacing ring 325, awl ring 323 top external diameter is less than awl ring 323 bottom external diameter, laminating ear 324 sets up and is greater than the projection area of awl ring 323 in awl ring 323 bottom and its projection area.
Preferably, a plurality of mounting bolts 326 are uniformly arranged on the attaching lug 324.
Preferably, include from last to down, communicate in proper order, integrated into one piece's straight cylinder chamber 331, transition chamber 332 and the chamber 333 of ventilating in the connection inflator 33, the internal diameter of straight cylinder chamber 331 is even and the same, the internal diameter of transition chamber 332 is outwards increased from the middle part in proper order, and the internal diameter at transition chamber 332 both ends is the same with the internal diameter of straight cylinder chamber 331, and transition chamber 332 bottom has the annular chamber 334 that communicates with transition chamber 332, the chamber 333 of ventilating sets up in annular chamber 334 bottom and ventilates the internal diameter of chamber 333 and is less than the minimum internal diameter of transition chamber 332.
The general fuel tank cap comprises a fuel tank cap body 51 and a handle cap 52 arranged at the outer side of the middle part of the fuel tank cap body 51, the invention is respectively called as a first side body 511 and a second side body 512 for the convenience of understanding at two sides of the handle cap 52, and a plurality of grooves 53 are arranged at the installation and leaning part of the back surface of the fuel tank cap body 51 and the fuel tank opening for clamping and sealing the fuel tank opening.
When the tightness detection device works, the lifting cylinder 21 drives the mounting plate 11 to lift up and down along the guide rail rod 12, so that the first pressing block 2411 and the second pressing block 2421 descend to be close to the oil tank cover body 51, when the first pressing block 2411 and the second pressing block 2421 are close to the tank cover body, the rotating motor 22 drives the linkage gear set 23 and drives the rotating disk 13 to rotate, so that the first pressing block 2411 and the second pressing block 2421 are respectively abutted against the first side body 511 and the second side body 512, the first pressing block 2411 and the second pressing block 2421 continuously approach to each other to clamp the handle cover 52 of the oil tank cover, so that the groove 53 inside the oil tank cover is covered on the oil tank cup 32 and clamped with the limiting ring 325 to cover the oil tank cup 32 tightly, simulate an oil tank on an automobile, the connecting air cylinder 33 is connected with the air source body through an air pipe, and the change of the pressure gauge is observed, so as to judge the air tightness of the oil tank cover, the airtightness of the tank cup 32, the connection cylinder 33, and the air pipe is tested in advance, and the airtightness of other parts is ensured to be good.
Compared with the prior art, the production method of the automobile fuel tank cap, which is simple in process, convenient and fast to detect and low in cost, simplifies the processes in the production process, ensures the production quality in the detection of the tail channel process, is low in cost, can be completed by self-assembly, and further saves the cost.
In all examples shown and described herein, any particular value should be construed as merely exemplary, and not as a limitation, and thus other examples of example embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In addition, in the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," "disposed," "provided," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
Finally, it should be noted that: the above-mentioned embodiments are merely specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein.

Claims (7)

1. The production method of the automobile fuel tank cap is characterized by comprising the following steps: the method comprises the following steps:
s1, drying raw materials: putting the plastic particles into a dryer for drying, wherein the drying temperature is 80-95 ℃;
s2, mixing the raw materials: putting the plastic particles into a high-speed mixer, adding graphite micro powder, an antioxidant and a lubricant, and mixing to form a mixed plastic raw material, wherein the mass ratio of the plastic particles to the graphite micro powder is (90-95): (1-2);
s3, injection molding: putting the plastic raw material into an injection molding machine, heating and melting, injecting into a mold, injection molding, airing, and cooling to form a blank;
s4, surface cleaning: cleaning the blank by using an ultrasonic cleaning machine, manually checking and deburring;
s5, tightness detection: and (4) carrying out air tightness detection on the oil tank cover by using a tightness detection device.
2. A sealability detection apparatus as claimed in claim 1 used in step S5, wherein: the oil tank cover sealing detection device comprises a workbench, a portal frame, a driving assembly and a detection tool, wherein the portal frame, the driving assembly and the detection tool are arranged on the workbench; the driving assembly comprises a lifting cylinder, a rotating motor, a linkage gear set and a clamping cylinder, the lifting cylinder is arranged at the top of the gantry, a telescopic rod of the lifting cylinder is fixedly connected with the mounting plate and used for driving the mounting plate to lift up and down along the guide rail rod, the rotating motor is arranged on the mounting plate, the rotating disc is arranged below the mounting plate, the linkage gear set comprises a driving gear and a driven gear, the driving gear is fixedly connected with an output shaft of the rotating motor, the driven gear is meshed with the driving gear and can drive the driven gear to rotate, a connecting shaft and a bearing are arranged in the middle of the driven gear, the connecting shaft is arranged at the center of the driven gear, the top of the connecting shaft is fixedly connected with the mounting plate, the bearing is arranged between the driven gear and the connecting shaft, the rotating motor drives the, the clamping cylinder comprises a first cylinder and a second cylinder which are fixed at the bottom of the rotating disc and are arranged in a matched mode, a first pressing block is fixed on an expansion link of the first cylinder, a second pressing block is fixed on an expansion link of the second cylinder, and the first pressing block and the second pressing block are arranged oppositely and can be close to each other or far away from each other under the driving of the first cylinder and the second cylinder; the detection tool comprises a fixing plate, an oil tank cup, a connecting air cylinder, a pressure gauge and an air source, wherein the fixing plate is fixed on the bottom surface of the portal frame, the oil tank cup and the connecting air cylinder are integrally formed and fixed on the fixing plate, and the connecting air cylinder is connected with the air source and the pressure gauge.
3. A leak testing device according to claim 2, wherein: the gantry comprises a gantry frame, a lifting cylinder, a guide rail rod and a penetrating and inserting block, wherein the top of the gantry frame is provided with a fixed panel, the lifting cylinder is arranged on the fixed panel, the top of the guide rail rod is provided with the penetrating and inserting block, the penetrating and inserting block is fixed to the top of the fixed panel, a penetrating hole is formed in the penetrating and inserting block, and the penetrating hole is slidably connected with the guide rail rod.
4. A leak testing device according to claim 2, wherein: and a gap is formed between the bottom of the driving gear and the rotating disc.
5. A leak testing device according to claim 2, wherein: the oil tank cup includes from last to down, connect gradually, integrated into one piece's cup edge, cup neck, taper ring and laminating ear, the cup edge is rolled over outwards and is formed the spacing ring, the external diameter of cup neck is less than the external diameter of spacing ring, taper ring top external diameter is less than taper ring bottom external diameter, the setting of laminating ear is greater than the projection area of taper ring in taper ring bottom and its projection area.
6. A leak detection apparatus according to claim 5, wherein: and a plurality of mounting bolts which are uniformly distributed are arranged on the attaching lugs.
7. A leak testing device according to claim 2, wherein: connect including from last to down, intercommunication, integrated into one piece's straight section of thick bamboo chamber, transition chamber and the chamber of ventilating in the inflator in proper order, the internal diameter in straight section of thick bamboo chamber is even and the same, the transition chamber gets the internal diameter and outwards increases from the middle part in proper order, and the internal diameter at transition chamber both ends is the same with the internal diameter in straight section of thick bamboo chamber, and the transition chamber bottom has the annular chamber with transition chamber intercommunication, the chamber setting of ventilating is less than the minimum internal diameter in transition chamber in annular chamber bottom and the internal diameter in the chamber of ventilating.
CN202010401518.1A 2020-05-13 2020-05-13 Production method of automobile oil tank cover Pending CN111716667A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010401518.1A CN111716667A (en) 2020-05-13 2020-05-13 Production method of automobile oil tank cover

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Application Number Priority Date Filing Date Title
CN202010401518.1A CN111716667A (en) 2020-05-13 2020-05-13 Production method of automobile oil tank cover

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Publication Number Publication Date
CN111716667A true CN111716667A (en) 2020-09-29

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Publication number Priority date Publication date Assignee Title
US5323640A (en) * 1993-05-10 1994-06-28 Environmental Systems Products, Inc. Automated testing of vehicle fuel caps
CN102183346A (en) * 2010-07-15 2011-09-14 上海霍富汽车锁具有限公司 Method for detecting leakage flow of automobile oil tank cover
CN102463889A (en) * 2010-11-15 2012-05-23 北汽福田汽车股份有限公司 Nylon hydraulic fuel tank cap and manufacturing method thereof
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CN108340066A (en) * 2018-03-03 2018-07-31 王东跃 A kind of medical stainless steel cup cup lid automatic welding leaks hunting equipment integrating
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Publication number Priority date Publication date Assignee Title
US5323640A (en) * 1993-05-10 1994-06-28 Environmental Systems Products, Inc. Automated testing of vehicle fuel caps
CN102183346A (en) * 2010-07-15 2011-09-14 上海霍富汽车锁具有限公司 Method for detecting leakage flow of automobile oil tank cover
CN102463889A (en) * 2010-11-15 2012-05-23 北汽福田汽车股份有限公司 Nylon hydraulic fuel tank cap and manufacturing method thereof
CN103792073A (en) * 2012-10-30 2014-05-14 南京汽车集团有限公司 System and method for testing positive and negative opening pressure of fuel tank cap lock
CN207662577U (en) * 2017-12-30 2018-07-27 昌辉汽车电器(黄山)股份公司 A kind of tank cap lock air-tightness detection device
CN108340066A (en) * 2018-03-03 2018-07-31 王东跃 A kind of medical stainless steel cup cup lid automatic welding leaks hunting equipment integrating
CN110617926A (en) * 2019-10-17 2019-12-27 济南正诚汽车科技有限公司 Fuel tank cover sealing performance detection device
CN111114299A (en) * 2020-01-16 2020-05-08 重庆嘉陵全域机动车辆有限公司 All-terrain vehicle oil tank structure

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Application publication date: 20200929

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