WO2016078516A1 - 连接油箱内部上下表面的刚性连接装置及油箱的生产方法 - Google Patents

连接油箱内部上下表面的刚性连接装置及油箱的生产方法 Download PDF

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Publication number
WO2016078516A1
WO2016078516A1 PCT/CN2015/093971 CN2015093971W WO2016078516A1 WO 2016078516 A1 WO2016078516 A1 WO 2016078516A1 CN 2015093971 W CN2015093971 W CN 2015093971W WO 2016078516 A1 WO2016078516 A1 WO 2016078516A1
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WIPO (PCT)
Prior art keywords
rigid
parison
connecting device
mold
fuel tank
Prior art date
Application number
PCT/CN2015/093971
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English (en)
French (fr)
Inventor
孙岩
姜林
刘亮
洪文斌
吕昊
苏卫东
陈学宏
魏先斗
周刚
王栋明
Original Assignee
亚普汽车部件股份有限公司
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Publication date
Priority claimed from CN201420691157.9U external-priority patent/CN204354817U/zh
Priority claimed from CN201410656620.0A external-priority patent/CN104477027B/zh
Application filed by 亚普汽车部件股份有限公司 filed Critical 亚普汽车部件股份有限公司
Priority to US15/769,066 priority Critical patent/US10994465B2/en
Publication of WO2016078516A1 publication Critical patent/WO2016078516A1/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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/20—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/18—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor using several blowing steps
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/28—Blow-moulding apparatus
    • B29C49/30—Blow-moulding apparatus having movable moulds or mould parts
    • B29C49/32—Blow-moulding apparatus having movable moulds or mould parts moving "to and fro"
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/12—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor of articles having inserts or reinforcements
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/18—Thermoforming apparatus
    • B29C51/20—Thermoforming apparatus having movable moulds or mould parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/03177—Fuel tanks made of non-metallic material, e.g. plastics, or of a combination of non-metallic and metallic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K15/073—Tank construction specially adapted to the vehicle
    • 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
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2/00—Friction-grip releasable fastenings
    • F16B2/20—Clips, i.e. with gripping action effected solely by the inherent resistance to deformation of the material of the fastening
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/20—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements
    • B29C2049/2008—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements inside the article
    • B29C2049/2013—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor of articles having inserts or reinforcements ; Handling of inserts or reinforcements inside the article for connecting opposite walls, e.g. baffles in a fuel tank
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/42—Component parts, details or accessories; Auxiliary operations
    • B29C49/48—Moulds
    • B29C2049/4879—Moulds characterised by mould configurations
    • B29C2049/4881—Moulds characterised by mould configurations having a mandrel or core e.g. two mould halves with a core in-between
    • 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
    • B29C49/00—Blow-moulding, i.e. blowing a preform or parison to a desired shape within a mould; Apparatus therefor
    • B29C49/02—Combined blow-moulding and manufacture of the preform or the parison
    • B29C49/04—Extrusion blow-moulding
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/02—Combined thermoforming and manufacture of the preform
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/08—Deep drawing or matched-mould forming, i.e. using mechanical means only
    • B29C51/082—Deep drawing or matched-mould forming, i.e. using mechanical means only by shaping between complementary mould parts
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/10—Forming by pressure difference, e.g. vacuum
    • B29C51/105—Twin sheet thermoforming, i.e. deforming two parallel opposing sheets or foils at the same time by using one common mould cavity and without welding them together during thermoforming
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/266—Auxiliary operations after the thermoforming operation
    • B29C51/267—Two sheets being thermoformed in separate mould parts and joined together while still in the mould
    • 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
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/26—Component parts, details or accessories; Auxiliary operations
    • B29C51/30—Moulds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2023/00—Use of polyalkenes or derivatives thereof as moulding material
    • B29K2023/04—Polymers of ethylene
    • B29K2023/06—PE, i.e. polyethylene
    • B29K2023/0608—PE, i.e. polyethylene characterised by its density
    • B29K2023/065—HDPE, i.e. high density polyethylene
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2623/00—Use of polyalkenes or derivatives thereof for preformed parts, e.g. for inserts
    • B29K2623/04—Polymers of ethylene
    • B29K2623/06—PE, i.e. polyethylene
    • B29K2623/0608—PE, i.e. polyethylene characterised by its density
    • B29K2623/065—HDPE, i.e. high density polyethylene
    • 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
    • B29L2031/712—Containers; Packaging elements or accessories, Packages
    • B29L2031/7172—Fuel tanks, jerry cans
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03032—Manufacturing of fuel tanks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03328—Arrangements or special measures related to fuel tanks or fuel handling
    • B60K2015/0344—Arrangements or special measures related to fuel tanks or fuel handling comprising baffles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K15/00—Arrangement in connection with fuel supply of combustion engines or other fuel consuming energy converters, e.g. fuel cells; Mounting or construction of fuel tanks
    • B60K15/03—Fuel tanks
    • B60K2015/03486—Fuel tanks characterised by the materials the tank or parts thereof are essentially made from
    • B60K2015/03493—Fuel tanks characterised by the materials the tank or parts thereof are essentially made from made of plastics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D11/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material
    • B65D11/20—Details of walls made of plastics material
    • B65D11/22—Reinforcing for strengthening parts of members
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D11/00—Containers having bodies formed by interconnecting or uniting two or more rigid, or substantially rigid, components made wholly or mainly of plastics material
    • B65D11/20—Details of walls made of plastics material
    • B65D11/22—Reinforcing for strengthening parts of members
    • B65D11/26—Local reinforcements, e.g. adjacent to closures

Definitions

  • the invention relates to a rigid connecting member, in particular to a rigid connecting member for connecting the upper and lower surfaces of the oil tank and a production method of the oil tank, and belongs to the technical field of automobile parts.
  • Automotive plastic fuel tanks have outstanding advantages over metal fuel tanks, especially for lightweight, higher product design freedom, corrosion resistance, and impact resistance.
  • the HDPE commonly used in plastic fuel tanks that is, the high-density polyethylene sheet material and the structure are insufficient in resisting the pressure deformation of the fuel tank relative to the metal material, so the application in the high pressure resistance is at a disadvantage, such as the conventional resistance to plastic fuel.
  • the box resists deformation under the action of fuel gravity deformation and infiltration aging.
  • Plug-in hybrid vehicles and extended-range electric vehicles are generally driven only by electric motors, and the engine does not work for a long time.
  • the fuel in the fuel tank such as gasoline and diesel
  • the fuel tank will Establish a higher air pressure, up to 40kPa high pressure and -20KPa negative pressure, so the current plan is to use a fuel tank with a pressure of 40KPa to prevent oil vapor from continuously discharging carbon cans, causing the carbon can to be saturated to avoid leakage of liquid fuel into the external environment.
  • the prior art often uses metal fuel tanks to meet the high pressure performance requirements.
  • the mold is used to press and join the upper and lower surfaces of the plastic parison by means of a mold, which is also known as KISS-OFF.
  • the structure has low connection strength and a large number of sacrificing the rated volume of the fuel tank, and the economy is poor. Therefore, a new technical solution is urgently needed to solve the technical problem, and the high pressure resistance, sealing performance and safety of the fuel tank are realized.
  • Related technical requirements such as performance.
  • the present invention is directed to the technical problems existing in the prior art, and provides a rigid connecting member for the upper and lower surfaces of the oil tank and a method for producing the oil tank.
  • the technical solution overcomes the defects in the prior art and provides a high pressure resistant plastic. Fuel tank.
  • a rigid connecting device for connecting the upper and lower surfaces of the inner surface of the oil tank, wherein the connecting device comprises a connecting rod, and the connecting rods are provided with connecting end faces on the upper and lower sides thereof.
  • the connecting end surface is provided with a through hole for facilitating a good connection between the HDPE and the connecting end face in the subsequent injection molding process, and preventing the HDPE from being detached from the connecting end face under the action of the pulling force, outside the rigid connecting device Covered with high density polyethylene.
  • the connecting rod is arranged as a cylinder or a rectangular parallelepiped or a cylinder with a certain arc in the middle, and is selected according to the actual situation of the fuel tank.
  • the connecting rod is fixed to the connecting end surface by welding or screwing, so that the setting can obtain the maximum.
  • Connection strength and reliability while occupying as little space as possible inside the fuel tank;
  • the connecting end faces on both sides of the connecting rod are provided with a circular or quadrilateral or elliptical shape or other figures, and the connecting end faces on both sides can be set to the same size, or Different size, in practical applications, it is generally the first side of the connecting end face that is connected to the molten parison. Smaller and larger, optimize the connection performance; since the purpose of the connecting end face is to connect the two parisons of the molten fuel tank, the shape and size of the connecting end face need to be selected according to the actual situation.
  • the outer part of the rigid connecting device is covered with high-density polyethylene, which is convenient for high-strength connection with two parisons. The whole technical scheme has a clever design and low cost, and meets the requirements of high pressure strength of the fuel tank.
  • At least one of the flash vent hole and the fixing hole is provided on the connecting end surface.
  • a flash vent hole is arranged on the connecting end surface to facilitate the function of exhausting and flashing during the process of connecting the connecting end face with the molten parison after the rubber coating, thereby reducing the resistance to the connection with the inner wall of the oil tank and improving the connection performance.
  • the connecting end surface is further provided with a fixing hole for adding a convex structure on the mold to be inserted into the fixing hole when the part is connected, so as to achieve a close fit between the part, the fuel tank molten parison and the mold. Preventing the sagging or even falling off of the rigid connector causes the inclination of the connection position or even the connection performance to be lowered.
  • a cover plate is disposed above the fixing hole, and the cover plate is provided with a weld line, and the cover plate is made of high-density polyethylene, so as to ensure that the weld line is the same as the fuel tank parison.
  • the material is welded; in the technical solution, a cover structure is assembled and covered over the fixed hole structure, and when the mold is pressed to press the parison to the fixing hole, the molten parison is pressed under the convex contact of the mold.
  • the welding wire of the plate realizes the fusion connection between the molten parison and the welding wire on the cover plate, further preventing the sagging or falling off of the rigid connecting member, optimizing the connection quality, and simultaneously melting the parison under the extrusion of the cover plate to the hole Spreading and cooling to form a reversed structure to further improve the joint strength.
  • the connecting rod is provided with a reinforcing rib, and the number of the reinforcing ribs The amount is at least one, which further improves the high pressure resistance of the connecting device.
  • the end face of the rubberized connecting device is provided with a high-density polyethylene pitting convex structure.
  • the rubberized joint end face is made of HDPE material, and has a plurality of HDPE material pitting structure on the top, which is used for puncture of one side end face under the pressing of the clamping mechanism and one side mold during the blow molding process.
  • the molten parison is fused, and the connection can be realized by the heat of the parison itself, and in the process of closing the mold at the end, the mold is closed by the mold to realize the convex structure on the other end face and the molten type on the other mold.
  • the billet is welded; the reliability of the rigid joint to the two parisons is ensured.
  • the connecting rod is a metal connecting rod or a high-strength engineering plastic connecting rod or a stamped metal connecting rod or an injection-molded high-strength engineering plastic connecting rod or an injection-molded high-strength reinforcing joint.
  • Rod. Its materials include HDPR, POM, PA and other engineering or plastics.
  • a method for producing a fuel tank provided with a rigid connecting device characterized in that the method comprises the following steps: 1) two parison blanking, the two parisons are respectively placed in two molds and preformed after being blanked The intermediate position between the templates;
  • the end surface of one side of the rigid connecting structure is connected to the inner wall of the preformed one side parison, and the specific operation is as follows, and a plurality of end faces of the connecting structure after the encapsulation are formed.
  • the pitting structure of the HDPE has a built-in mechanism for connecting the end face of one side of the rigid connecting structure to the inner wall of the preformed one side parison; at the same time, the die convexly presses the parison to the fixing hole on the connecting end face, and melts The parison contacts the weld line of the cover plate under the extrusion of the mold protrusion to realize the fusion connection between the molten parison and the weld line on the cover plate, further preventing the sagging or falling off of the rigid connecting member.
  • the molten parison is spread around the fixing hole under the extrusion of the cover plate, and after cooling, the inverted structure is formed, and the end surface of one side of the rigid connecting structure is connected to the inner wall of the preformed one side parison.
  • the advantages of the present invention are as follows: 1) The structural design of the rigid connecting device is ingenious and compact, the degree of freedom of the shape design is high, and the performance requirements of the tank can withstand high pressure; 2) through the connecting rod Realize the connection with the upper and lower surfaces of the fuel tank, use in the local area where the fuel tank is less rigid, and have more effective space than KISS-OFF; 3) the rigid connecting rod is in contact with the fuel, high-density polyethylene, not other The engineering plastics or metals can meet the requirements of strength and corrosion resistance. 4) The connection method of the two-piece parison is used to connect the rigid connecting rod to the inner wall of the fuel tank by means of welding, making full use of the parison.
  • the technical solution has good economy and manufacturing feasibility, and meets the requirements of high-rigidity fuel tank; 5) The technical solution can solve the requirement of preventing 40KPa positive pressure deformation inside the fuel tank. The rigid connecting device can also well meet the requirements of -20KPa negative pressure. The application range is relatively wide; 6) The technical solution can reasonably reduce the cost and facilitate large-scale popularization and application.
  • FIG. 1 is a schematic structural view of a rigid connecting device for metal or high-strength engineering plastics according to the present invention
  • FIG. 2 is a schematic view showing the structure of the reinforcing end face of the metal or high-strength engineering plastic of the present invention
  • FIG. 3 is a schematic view showing the end face structure of the metal or high-strength engineering plastic injection-molded HDPE of the present invention.
  • FIG. 4 is a schematic view showing the overall structure of the metal or high-strength engineering plastic injection-molded HDPE of the present invention.
  • Figure 4-1 is a partial enlarged view of Figure 4.
  • Figure 5 is a schematic structural view of a cover plate assembled to a fixing hole
  • FIG. 6 is a schematic structural view of a rigid connecting device for stamped metal or injection molded high-strength engineering plastic according to the present invention.
  • FIG. 7 is a schematic view showing the injection molding rubber structure of the stamping metal or injection high-strength engineering plastic connecting device of the present invention.
  • Figure 8 is a schematic view showing the overall structure of the internal injection high-strength reinforcing member of the present invention.
  • FIG. 9 is a schematic view showing the structure of an injection molded rubber for internal injection molding high strength reinforcement according to the present invention.
  • Figure 10 is a schematic view showing the state of two parisons
  • Figure 11 is a schematic view showing the first closed state of the two mold halves
  • Figure 12 is a schematic view showing the exit state of the preformed template
  • Figure 13 is a view showing a state in which the component is built in and the rigid connecting structure is connected to one of the parisons;
  • Figure 14 is a schematic view showing the state in which the mold half mold is closed again;
  • Figure 15 is a schematic view showing the structure of the generated fuel tank
  • connecting rod 1, connecting rod, 2, connecting end face, 3, through hole, 4, fixing hole, 5, flash venting hole, 6, HDPE pitting structure; 7, reinforcing rib, 8, welding wire, 9, Cover plate, 10, mold half mold, 11, pre-formed template, 12, fuel tank, 13, fixture, 14, component built-in mechanism, 15, cover card slot, 16, cover assembly hole, 17, internal injection molding high strength Reinforcement, 21, the joint end face after injection molding.
  • a rigid connecting device for connecting the upper and lower surfaces of the oil tank includes a connecting rod 1, and the connecting rods are provided on the upper and lower sides thereof, and the connecting end faces 2 are arranged
  • the through hole 3 is provided to facilitate the good connection between the HDPE and the connecting end face in the subsequent injection molding process, and to prevent the HDPE from being detached from the connecting end face under the action of the pulling force, and the outer surface of the rigid connecting device is coated with high density.
  • Polyethylene referred to as HDPE.
  • the connecting rod 1 is arranged as a cylinder or a rectangular parallelepiped or a cylinder with a certain arc in the middle, which is selected according to the actual situation of the fuel tank, and the connecting rod is fixed to the connecting end face 2 by welding or screwing, so that the setting can be maximized.
  • connection strength and reliability while occupying as little space as possible inside the fuel tank;
  • the connecting end faces 2 on both sides of the connecting rod 1 are provided with a circular or quadrangular or elliptical shape or other figures, and the connecting end faces 2 on both sides can be set to The same size, can also be different size,
  • the size of the connecting end face of the first side connected with the molten parison is generally larger to optimize the connection performance; since the purpose of the connecting end face is to connect the two parisons of the molten fuel tank, the end face is connected.
  • the shape and size need to be chosen according to the actual situation.
  • the outer part of the rigid connecting device is covered with high-density polyethylene, which is convenient for high-strength connection with two parisons.
  • the whole technical scheme has a clever design and low cost, and meets the requirements of high pressure strength of the fuel tank.
  • At least one of the overflow vent hole 5 and the fixing hole 4 is provided on the connecting end surface.
  • a venting vent 5 is provided on the connecting end face 2, and the structure after the encapsulation is as shown in Fig. 3.
  • the vented venting hole 5 after the encapsulation facilitates the joining end face and the melting after the encapsulation
  • the connection process of the parison can play the role of exhausting and flashing, reduce the resistance to the connection with the inner wall of the fuel tank, and improve the connection performance.
  • the connecting end face is further provided with a fixing hole 4 for adding a protrusion to the mold.
  • FIG. 3 is a schematic view showing the structure of the connecting end face after the encapsulation, wherein the HDPE pockmark structure is formed on the connecting end face after the encapsulation, and the rubber venting hole 5 after the encapsulation and the fixing hole 4 after the encapsulation can be seen on the connecting end face.
  • a cover plate 9 is disposed above the fixing hole 4, and the cover plate 9 is provided with a weld line 8 on the side of the cover plate 9
  • the "T" type structure is assembled into the cover mounting hole 16 while the cover card slot 15 is used to fix both sides of the cover to ensure the fixing of the cover on the rigid connecting device.
  • a cover plate 9 is assembled and attached over the structure of the fixing hole 4, and when the mold protrusion presses the parison to the fixing hole, the molten parison contacts the cover plate under the convex extrusion of the mold.
  • the welding wire realizes the fusion connection between the molten parison and the welding wire on the cover plate, further prevents the sagging or even falling off of the rigid connecting member, optimizes the connection quality, and simultaneously spreads the molten parison to the periphery of the hole under the pressing of the cover plate. After cooling, the inverted structure is formed to further improve the joint strength.
  • the connecting rod 2 is provided with a reinforcing rib 7, and the number of the reinforcing ribs 7 is at least one for uniformly applying the force received by the connecting rod to the connecting end surface.
  • the failure of the joint end face is prevented from being excessively stressed, and the high pressure resistance of the connecting device is further improved.
  • the end face of the rubberized connecting device is provided with a high-density polyethylene pitting structure 6, which is referred to as an HDPE puncture structure.
  • the rubberized joint end face is made of HDPE material, and has a plurality of HDPE material pitting structure on the top, which is used for puncture of one side end face under the pressing of the clamping mechanism and one side mold during the blow molding process.
  • the molten parison is fused, and the connection can be realized by the heat of the parison itself, and in the process of closing the mold at the end, the mold is closed by the mold to realize the convex structure on the other end face and the molten type on the other mold.
  • the billet is welded; the reliability of the rigid joint to the two parisons is ensured.
  • the connecting rod is a metal connecting rod or a high-strength engineering plastic connecting rod; referring to FIG. 6 and FIG. 7, the connecting rod is a stamped metal connecting rod or a high injection molding.
  • a method of producing a fuel tank provided with a rigid connecting device comprising the following steps: 1) two parison blanking, the two parisons are respectively placed in two molds after being blanked The intermediate position between the mold half 10 and the preformed template 11, see Fig. 10;
  • the component built-in mechanism moves into the built-in component connection, and the built-in parts required in the fuel tank are fixed to the inner wall of the cavity by the mechanical arm; and the end face of the rigid connecting structure is connected to the preformed side.
  • the inner component is fixed, and the connecting end face on the side of the connecting device is fixed to the parison on one side.
  • the end surface of one side of the rigid connecting structure is connected to the inner wall of the preformed one side parison, and the specific operation is as follows, and the end surface 21 of the connecting structure after the encapsulation is formed.
  • the component built-in mechanism connects the end face of one side of the rigid connecting structure to the inner wall of the preformed one side parison; and the die convexly presses the parison to the fixing hole 4 on the connecting end face
  • the molten parison contacts the weld line 8 of the cover plate 9 under the extrusion of the mold protrusion, thereby achieving the fusion connection between the molten parison and the weld line on the cover plate, further preventing the sagging or falling off of the rigid joint member.
  • the molten parison is spread around the fixing hole under the extrusion of the cover plate, and after cooling, the inverted structure is formed, and the end surface of one side of the rigid connecting structure is connected to the inner wall of the preformed one side parison.
  • the present invention can also combine at least one of the technical features described in Embodiments 2, 3, 4, 5, and 6 with Embodiment 1 to form a new embodiment.

Abstract

一种连接油箱内部上下表面的刚性连接装置，包括连接杆（1），所述连接杆（1）的上下两侧均设置有连接端面（2），所述连接端面（2）上设置有过料孔（3），所述刚性连接装置的外面包覆有高密度聚乙烯。该刚性连接装置结构设计巧妙、紧凑，外形设计的自由度较高，并且可以承受油箱耐高压的性能要求；通过连接杆实现油箱上下表面的连接，在燃油箱刚性较差的局部区域进行使用，具有更多的有效空间；刚性连接杆与燃油接触的是高密度聚乙烯，能够很好地满足强度和耐磨蚀性的要求。

Description

连接油箱内部上下表面的刚性连接装置及油箱的生产方法 技术领域
本发明涉及一种刚性连接件，具体涉及一种连接油箱内部上下表面的刚性连接件及油箱的生产方法，属于汽车零部件技术领域。
背景技术
汽车塑料燃油箱相对于金属燃油箱具有突出的优势，特别是轻量化，更高的产品外形设计自由度和防腐蚀，防冲击等性能方面。但是塑料油箱常用的HDPE，即高密度聚乙烯片状材质、结构相对于金属材料在抵抗燃油箱耐压变形方面存在不足，所以在耐高压等方面的应用处于劣势，比如在常规的抵抗塑料燃油箱在燃油重力变形和浸润老化的作用下的抵抗变形。以及在某些特殊的工程领域需要保持燃油箱内部高压时需要具有耐高压变形的能力，如插电式混合动力汽车燃油箱。插电式混合动力汽车和增程式电动汽车在一般情况下仅由电动机驱动，发动机长时间不工作。随着一天的昼夜温度的变化与燃油箱内部的热量交换，燃油箱中的燃料，例如汽油、柴油会产较大的温差变化导致产生较高的燃油蒸气压，在某些情况下油箱内会建立起较高的气压，可达40kPa高压以及-20KPa的负压，所以目前方案是采用耐40KPa的压力的燃油箱防止油蒸汽不断排放碳罐造成碳罐饱和避免液态燃油泄漏到外界环境中造成HC排放污染甚至火灾的危险；由于整个行业对油箱的密封性以及安全性要求较高，因此，上述问题一直没有得到很好的解决，现有技术往往采用金属油箱来满足耐高压的性能要求，但是由于金属油箱的耐腐蚀性差、重量重、外形设计自由度小 的特点，并不能很好地应用在耐高压的燃油箱的领域；或者现有技术中采用吹塑过程中利用模具将塑料型坯的上下表面局部区域挤压连接，也就是俗称的KISS-OFF结构，该结构连接强度较低，且大量牺牲了油箱的额定容积，经济性较差，因此，迫切的需要一种新的技术方案解决该技术问题，实现油箱的耐高压性能、密封性能、安全性能等相关技术要求。
发明内容
本发明正是针对现有技术中存在的技术问题，提供一种油箱内部上下表面的刚性连接件及油箱的生产方法，该技术方案克服了现有技术中的缺陷，提供一种耐高压的塑料燃油箱。
为了实现上述目的，本发明的技术方案如下，一种连接油箱内部上下表面的刚性连接装置，其特征在于，所述连接装置包括连接杆，所述连接杆的上下两侧均设置有连接端面，所述连接端面上设置有过料孔，便于在之后的注塑包胶过程中实现HDPE与该连接端面的良好连接，防止在拉力的作用下HDPE与连接端面的脱离，所述刚性连接装置的外面包覆有高密度聚乙烯。所述连接杆设置为圆柱体或者长方体或者中间设置有一定弧度的圆柱体，根据油箱的实际情况进行选择，所述连接杆通过焊接或者螺纹连接与连接端面固定在一起，这样设置可以获得最大的连接强度和可靠性，同时又尽量少的占用油箱内部有限的空间；连接杆两侧的连接端面设置有圆形或者四边形或者椭圆形或者其他图形，两侧连接端面可以设置为一样大小，也可以不一样的大小，在实际应用中，一般将先和熔融型坯连接的一侧连接端面的大 小适当大一些，优化连接性能；由于连接端面的目的是和熔融的油箱两片型坯相连接，因此，连接端面的形状以及大小需要根据实际情况自行选择。刚性连接装置的外面包覆有高密度聚乙烯，便于和两片型坯实现高强度的连接，整个技术方案结构设计巧妙，成本较低，满足了油箱耐高压强度的要求。
作为本发明的一种改进，所述连接端面上设置有溢料排气孔、固定孔中的至少一个。在连接端面上设置有溢料排气孔，便于包胶后将连接端面与熔融态的型坯连接过程中可以起到排气和溢料的作用，降低与油箱内壁连接的阻力，提高连接性能。同时连接端面上还设置有固定孔，用于在模具上增加一个凸起结构在该零件连接时插入到该固定孔中，实现零件、油箱熔融型坯与模具三者之间的紧密贴合，防止造成刚性连接件的下垂甚至脱落造成连接位置的倾斜甚至连接性能的降低。
作为本发明的一种改进，所述固定孔上方设置有盖板，所述盖板上设置有熔接线，所述盖板的材料为高密度聚乙烯，这样才能保证熔接线与油箱型坯同种材料熔接；该技术方案中将一个盖板结构装配连接覆盖于固定孔结构的上方，在模具凸起挤压型坯至固定孔时，熔融型坯在模具上凸起的挤压下接触盖板的熔接线，实现熔融型坯与盖板上的熔接线的熔接连接，进一步防止造成刚性连接件的下垂甚至脱落，优化连接质量，同时熔融型坯在盖板的挤压下向孔的四周铺开，冷却后形成倒拔结构实现连接强度的进一步提高。
作为本发明的一种改进，所述连接杆上设置有加强筋，加强筋的数 量至少是一个，进一步提高连接装置的耐高压性能。
作为本发明的一种改进，所述包胶后的连接装置的端面上设置有高密度聚乙烯麻点凸起结构。包胶后的连接端面为HDPE材料，上面有多个HDPE材质的麻点凸起结构，用于在吹塑过程中将一侧端面麻点在夹持机构的挤压下与一侧模具上的熔融态型坯熔融连接，该连接利用型坯本身的热量就可以实现，并在最后模具闭合的过程中利用模具闭模实现另一侧端面麻点凸起结构与另外一侧模具上的熔融型坯进行熔接；确保了刚性连接装置与两片型坯连接的可靠性。
作为本发明的一种改进，作为本发明的一种改进，所述连接杆为金属连接杆或者高强度工程塑料连接杆或者冲压金属连接杆或者注塑高强度工程塑料连接杆或者注塑高强度增强连接杆。其材质包括HDPR、POM、PA等数值或者工程塑料。
一种设置有刚性连接装置的油箱的生产方法，其特征在于：所述方法包括以下步骤，1)两片型坯下料，所述两片型坯下料后分别位于两片模具与预成型模板之间的中间位置；
2)模具半模与预成型模板闭合；
3)内部高压吹塑，进行两片壳体预成型；
4)模具打开，预成型模板退出；
5)组件内置机构移入进行内置组件连接，同时将刚性连接结构一侧的端面连接于预成型好的一侧型坯内壁上；
6)组件内置机构移出；
7)模具二次闭合，利用模具闭合时的挤压实现刚性连接结构的另一 端面与另外一侧型坯内部的连接；同时高压吹塑成型中空箱体；
8)模具打开并取出产品。
作为本发明的一种改进，所述步骤5中，将刚性连接结构一侧的端面连接于预成型好的一侧型坯内壁上，具体操作如下，包胶后的连接结构端面上形成多个HDPE的麻点凸起结构，组件内置机构将刚性连接结构一侧的端面连接于预成型好的一侧型坯内壁上；同时模具凸起挤压型坯至连接端面上的固定孔上，熔融型坯在模具凸起的挤压下接触盖板的熔接线，实现熔融型坯与盖板上的熔接线的熔接连接，进一步防止造成刚性连接件的下垂甚至脱落。同时熔融型坯在盖板的挤压下向固定孔的四周铺开，冷却后形成倒拔结构，实现刚性连接结构一侧的端面连接于预成型好的一侧型坯内壁上。
相对于现有技术，本发明的优点如下：1)该技术方案中刚性连接装置结构设计巧妙、紧凑，外形设计的自由度较高，并且可以承受油箱耐高压的性能要求；2)通过连接杆实现与油箱上下表面的连接，在燃油箱刚性较差的局部区域进行使用，相比KISS-OFF具有更多的有效空间；3)刚性连接杆与燃油接触的是高密度聚乙烯，而不是其他的工程塑料或者金属，能够很好地满足强度和耐腐蚀性的要求；4)采用两片式型坯的连接方法将刚性连接杆利用熔接的方式实现与油箱内壁的连接，充分利用了型坯自身的热量，充分合理的节约能源；4)该技术方案具有良好的经济性和制造可行性，同时满足高刚性油箱的要求；5)该技术方案除了能够解决防止油箱内部40KPa正压变形的要求该刚性连接装置还能够很好地满足耐-20KPa的负压的要求， 应用范围比较广泛；6)该技术方案合理的降低了成本，便于大规模的推广应用。
附图说明
图1为本发明金属或高强度工程塑料刚性连接装置结构示意图；
图2为本发明金属或高强度工程塑料加强端面结构示意图；
图3为本发明金属或高强度工程塑料注塑包胶HDPE后的端面结构示意图；
图4为本发明金属或高强度工程塑料注塑包胶HDPE后的整体结构示意图；
图4-1为图4局部放大图；
图5为装配至固定孔上方的盖板结构结构示意图；
图6为本发明冲压金属或注塑高强度工程塑料刚性连接装置结构示意图；
图7为本发明冲压金属或注塑高强度工程塑料连接装置注塑包胶结构示意图；
图8为本发明内部注塑高强度增强件整体结构示意图；
图9为本发明内部注塑高强度增强件注塑包胶结构示意图；
图10为两片型坯下料状态示意图；
图11为两个模具半模第一次闭合状态示意图；
图12为预成型模板退出状态示意图；
图13为组件内置以及刚性连接结构连接于其中一侧型坯上的状态图；
图14为模具半模再次闭合状态示意图；
图15为生成的油箱结构示意图；
其中：1、连接杆，2、连接端面，3、过料孔，4、固定孔，5、溢料排气孔，6、HDPE麻点结构；7、加强筋，8、熔接线，9、盖板，10、模具半模，11、预成型模板，12、油箱，13、工装夹具，14、组件内置机构，15、盖板卡槽，16、盖板装配孔，17、内部注塑高强度增强件，21、注塑包胶后的连接端面。
具体实施方式
为了加深对本发明的认识和理解，下面结合附图和具体实施方式对本发明作出进一步的介绍。
实施例1：
参见图1—图4，一种连接油箱内部上下表面的刚性连接装置，所述连接装置包括连接杆1，所述连接杆的上下两侧均设置有连接端面2，所述连接端面2上设置有过料孔3，便于在之后的注塑包胶过程中实现HDPE与该连接端面的良好连接，防止在拉力的作用下HDPE与连接端面的脱离，所述刚性连接装置的外面包覆有高密度聚乙烯，简称HDPE。其中连接杆1设置为圆柱体或者长方体或者中间设置有一定弧度的圆柱体，根据油箱的实际情况进行选择，所述连接杆通过焊接或者螺纹连接与连接端面2固定在一起，这样设置可以获得最大的连接强度和可靠性，同时又尽量少的占用油箱内部有限的空间；连接杆1两侧的连接端面2设置有圆形或者四边形或者椭圆形或者其他图形，两侧的连接端面2可以设置为一样大小，也可以不一样的大小， 在实际应用中，一般将先和熔融型坯连接的一侧连接端面的大小适当大一些，优化连接性能；由于连接端面的目的是和熔融的油箱两片型坯相连接，因此，连接端面的形状以及大小需要根据实际情况自行选择。刚性连接装置的外面包覆有高密度聚乙烯，便于和两片型坯实现高强度的连接，整个技术方案结构设计巧妙，成本较低，满足了油箱耐高压强度的要求。
实施例2：
参见图1—图4，作为本发明的一种改进，所述连接端面上设置有溢料排气孔5、固定孔4中的至少一个。参见图2，在连接端面2上设置有溢料排气孔5，包胶后的结构如图3中所示，包胶后的溢料排气孔5，便于包胶后将连接端面与熔融态的型坯连接过程中可以起到排气和溢料的作用，降低与油箱内壁连接的阻力，提高连接性能，同时连接端面上还设置有固定孔4，用于在模具上增加一个凸起结构在该零件连接时插入到该固定孔4中，包胶后的结构图图3所示，图3中为包胶后的固定孔4，实现零件、油箱熔融型坯与模具三者之间的紧密贴合，防止造成刚性连接件的下垂甚至脱落造成连接位置的倾斜甚至连接性能的降低。图3为包胶后连接端面结构示意图，其中包胶后连接端面上形成HDPE麻点结构，连接端面上可以看到包胶后的溢料排气孔5以及包胶后的固定孔4。
实施例3：
参见图4、图41以及图5，作为本发明的一种改进，所述固定孔4上方设置有盖板9，所述盖板9上设置有熔接线8，盖板9一侧可采 用“T”型结构装配到盖板装配孔16中，同时盖板卡槽15用于固定盖板的两侧，保证盖板在刚性连接装置上的固定。该技术方案中将一个盖板9结构装配连接覆盖于固定孔4结构的上方，在模具凸起挤压型坯至固定孔时，熔融型坯在模具上凸起的挤压下接触盖板的熔接线，实现熔融型坯与盖板上的熔接线的熔接连接，进一步防止造成刚性连接件的下垂甚至脱落，优化连接质量，同时熔融型坯在盖板的挤压下向孔的四周铺开，冷却后形成倒拔结构实现连接强度的进一步提高。
实施例4：
参见图4，作为本发明的一种改进，所述连接杆2上设置有加强筋7，加强筋7的数量至少是一个，用于将连接杆所承受的力均匀地施加到连接端面上，防止连接端面局部受力过大造成的失效，进一步提高连接装置的耐高压性能。
实施例5：
参见图3，作为本发明的一种改进，所述包胶后的连接装置的端面上设置有高密度聚乙烯麻点凸起结构6，简称HDPE麻点结构。包胶后的连接端面为HDPE材料，上面有多个HDPE材质的麻点凸起结构，用于在吹塑过程中将一侧端面麻点在夹持机构的挤压下与一侧模具上的熔融态型坯熔融连接，该连接利用型坯本身的热量就可以实现，并在最后模具闭合的过程中利用模具闭模实现另一侧端面麻点凸起结构与另外一侧模具上的熔融型坯进行熔接；确保了刚性连接装置与两片型坯连接的可靠性。
实施例6：
作为本发明的一种改进，参见图1、图2，所述连接杆为金属连接杆或者高强度工程塑料连接杆；参见图6、图7，所述连接杆为冲压金属连接杆或者注塑高强度工程塑料连接杆；参见图8、图9，所述连接杆为注塑高强度增强件，其材质包括HDPR、POM、PA等数值或者工程塑料。
实施例7：
参见图10—图15，一种设置有刚性连接装置的油箱的生产方法，所述方法包括以下步骤，1)两片型坯下料，所述两片型坯下料后分别位于两片模具半模10与预成型模板11之间的中间位置，参见图10；
2)参见图11，模具半模10与预成型模板11闭合；该步骤中两边的模具半模同时向中间的预成型模板移动；
3)内部高压吹塑，进行两片壳体预成型；该步骤中，两片熔融的型坯分别紧贴模具半模的型腔；实现油箱内壁结构的预成型；
4)参见图12，模具半模10打开，预成型模板11退出；
5)参见图13，组件内置机构移入进行内置组件连接，将油箱中所需要的内置零件通过机械手臂固定在型腔内壁上；同时将刚性连接结构一侧的端面连接于预成型好的一侧型坯内壁上；该步骤中，完成将内置组件进行固定，并且完成连接装置一侧的连接端面与其中一侧的型坯固定。
6)参见图13，当完成内置组件固定以及刚性连接装置固定在其中一 侧的型坯上后，组件内置机构移出；
7)模具二次闭合，利用模具闭合时的挤压实现刚性连接结构的另一端面与另外一侧型坯内部的连接；同时高压吹塑成型中空箱体；
8)模具打开并取出产品。
作为本发明的一种改进，所述步骤5中，将刚性连接结构一侧的端面连接于预成型好的一侧型坯内壁上，具体操作如下，包胶后的连接结构端面21上形成多个HDPE的麻点凸起结构，组件内置机构将刚性连接结构一侧的端面连接于预成型好的一侧型坯内壁上；同时模具凸起挤压型坯至连接端面上的固定孔4上，熔融型坯在模具凸起的挤压下接触盖板9的熔接线8，实现熔融型坯与盖板上的熔接线的熔接连接，进一步防止造成刚性连接件的下垂甚至脱落。同时熔融型坯在盖板的挤压下向固定孔的四周铺开，冷却后形成倒拔结构，实现刚性连接结构一侧的端面连接于预成型好的一侧型坯内壁上。
本发明还可以将实施例2、3、4、5、6所述技术特征中的至少一个与实施例1组合，形成新的实施方式。
需要说明的是上述实施例仅仅是本发明的较佳实施例，并没有用来限定本发明的保护范围，在上述技术方案的基础上作出的等同替换或者替代，均属于本发明的保护范围。

Claims (10)

  1. 一种连接油箱内部上下表面的刚性连接装置，其特征在于，所述连接装置包括连接杆，所述连接杆的上下两侧均设置有连接端面，所述连接端面上设置有过料孔，所述刚性连接装置的外面包覆有高密度聚乙烯。
  2. 根据权利要求1所述的一种连接油箱内部上下表面的刚性连接装置，其特征在于，所述连接端面上设置有溢料排气孔、固定孔中的至少一个。
  3. 根据权利要求2所述的一种连接油箱内部上下表面的刚性连接装置，其特征在于，所述固定孔上方设置有盖板，所述盖板上设置有熔接线，所述盖板的材料为高密度聚乙烯。
  4. 根据权利要求3所述的一种连接油箱内部上下表面的刚性连接装置，其特征在于，所述连接杆上设置有加强筋。
  5. 根据权利要求2或3或4所述的一种连接油箱内部上下表面的刚性连接装置，其特征在于，所述包胶后的连接装置的端面上设置有高密度聚乙烯麻点凸起结构。
  6. 根据权利要求5所述的一种连接油箱内部上下表面的刚性连接装置，其特征在于，所述连接端面设置为圆形、四边形、椭圆形、不规则图形中的一种。
  7. 根据权利要求6所述的一种连接油箱内部上下表面的刚性连接装置，其特征在于，所述连接杆为金属连接杆或者高强度工程塑料连接杆或者冲压金属连接杆或者注塑高强度工程塑料连接杆或者注塑高 强度增强连接杆。
  8. 根据权利要求5或6所述的一种连接油箱内部上下表面的刚性连接装置，其特征在于，所述连接杆通过焊接或者螺纹连接与连接端面固定在一起。
  9. 采用权利要求1-8任一项权利要求所述设置有刚性连接装置的油箱的生产方法，其特征在于：所述方法包括以下步骤，1)两片型坯下料，所述两片型坯下料后分别位于两片模具与预成型模板之间的中间位置；
    2)模具半模与预成型模板闭合；
    3)内部高压吹塑，进行两片壳体预成型；
    4)模具打开，预成型模板退出；
    5)组件内置机构移入进行内置组件连接，同时将刚性连接结构一侧的端面连接于预成型好的一侧型坯内壁上；
    6)组件内置机构移出；
    7)模具二次闭合，利用模具闭合时的挤压实现刚性连接结构的另一端面与另外一侧型坯内部的连接；同时高压吹塑成型中空箱体；
    8)模具打开并取出产品。
  10. 根据权利要求9所述的设置有刚性连接装置的油箱生产方法，其特征在于，所述步骤5中，将刚性连接结构一侧的端面连接于预成型好的一侧型坯内壁上，具体操作如下，
    包胶后的连接结构端面上形成多个HDPE的麻点凸起结构，组件内置机构将刚性连接结构一侧的端面连接于预成型好的一侧型坯内壁上； 同时模具凸起挤压型坯至连接端面上的固定孔上，熔融型坯在模具凸起的挤压下接触盖板的熔接线，实现熔融型坯与盖板上的熔接线的熔接连接，进一步防止造成刚性连接件的下垂甚至脱落。同时熔融型坯在盖板的挤压下向固定孔的四周铺开，冷却后形成倒拔结构，实现刚性连接结构一侧的端面连接于预成型好的一侧型坯内壁上。
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