CN218616230U - Welding structure for built-in part of plastic oil tank - Google Patents
Welding structure for built-in part of plastic oil tank Download PDFInfo
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- CN218616230U CN218616230U CN202222420013.7U CN202222420013U CN218616230U CN 218616230 U CN218616230 U CN 218616230U CN 202222420013 U CN202222420013 U CN 202222420013U CN 218616230 U CN218616230 U CN 218616230U
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Abstract
The utility model relates to a welding structure of plastic oil tank built-in components, including the welding flange body, the welding flange body includes weld part and buckle portion, and the weld part is the flat structure, and both ends are the arc structure, and the weld part is hollow structure, and weld part arc one end is equipped with the opening, and the weld part upper surface runs through and is equipped with a plurality of circular through-hole, and a plurality of circular through-hole evenly distributed is on the weld part surface, and circular through-hole all communicates with the weld part inner chamber; through the material extrusion deformation with the oil tank inner wall, make the material of oil tank inner wall fill up the welding part inner chamber through circular through-hole to form firm fixed knot and construct, strengthened welding strength greatly, and reduced the control of welding temperature in welding process.
Description
Technical Field
The utility model belongs to the technical field of the car fuel system, concretely relates to plastics oil tank built-in welding structure.
Background
With the increasing awareness of environmental issues and the stricter and stricter regulations on HC emissions from fuel tanks in automobiles, the currently implemented country 6 and the LEVIII implemented in california of the united states all place higher design requirements on the design of fuel systems. In order to meet increasingly stringent regulatory requirements, fuel tank manufacturers have built-in components such as valves and pipes which cause HC emissions, and have adopted a blow molding process for fuel tanks known as "2-piece". This built-in welding process results in greatly reduced emissions from the fuel tank assembly. But some problems also follow: at present, a hot-melt welding mode is mainly adopted for part built-in, namely, a built-in part flange is fixed with the inner wall of an oil tank by adopting HDPE material in a hot-melt welding mode. In the mode, parameters such as hot melting time, pressure and the like need to be accurately adjusted, a large amount of time is usually spent in actual debugging and production, and the HDPE material can deform after being soaked in fuel oil for a long time, so that the welding durability is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model provides an above-mentioned problem discloses a plastics oil tank built-in welding structure, has solved among the prior art problem that welding durability can be poor between built-in part flange and the oil tank inner wall.
The specific technical scheme is as follows:
a welding structure for a built-in part of a plastic oil tank comprises a welding flange body, wherein the welding flange body comprises a welding part and a clamping part, the welding part is of a flat-plate-shaped structure, two ends of the welding part are of arc-shaped structures, the welding part is of a hollow structure, an opening is formed in one arc-shaped end of the welding part, a plurality of circular through holes penetrate through the upper surface of the welding part, the circular through holes are uniformly distributed on the surface of the welding part, and the circular through holes are communicated with an inner cavity of the welding part; the clamping part is located the weld part lower extreme, and clamping part is hollow discoid structure, and clamping part inner wall upper end is equipped with the connecting seat, the connecting seat is connected with the weld part bottom, and the clamping part center is equipped with the holding ring, the holding ring upper end is connected with the weld part bottom, and circumference is equipped with a plurality of locating plates on the holding ring lateral wall, and is a plurality of the one end of locating plate all is connected with clamping part inner wall and connecting seat inner wall, and clamping part one side is equipped with the fixture block, and clamping part matches fixedly through the mode of buckle connection with built-in such as built-in valve, wave breaker board.
Furthermore, a chamfer structure is formed between the upper end of the through hole and the upper surface of the welding part.
Furthermore, the welding flange body is integrally formed by injection molding.
Furthermore, the welding flange body is made of oil-resistant plastic materials such as HDPE, POM and PA.
Furthermore, the thickness of the inner cavity of the welding part and the thickness of the circular through hole are both 1-1.5 mm.
Furthermore, a positioning bump is arranged at the center of the bottom of the welding part, which is positioned at the buckling part.
The welding principle is as follows: pressing the welding flange on the inner wall of the oil tank shell through the tool, enabling the inner wall material of the oil tank to enter the inner cavity of the welding part through the circular through hole, extruding and gradually paving the whole inner cavity in the welding process, cooling the oil tank material after the welding process is finished, and fixing the welding flange.
The beneficial effects of the utility model are embodied in:
the utility model discloses a traditional welded structure compares, through the material extrusion deformation with the oil tank inner wall, makes the material of oil tank inner wall fill up the weld part inner chamber through circular through-hole to form firm fixed knot and construct, strengthened welding strength greatly, and reduced the control of welding temperature in welding process, make the built-in part of 2 formula oil tanks fixed more convenient firm.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a top view of the present invention.
Fig. 3 is a bottom view of the present invention.
Fig. 4 is a side view of the present invention.
Fig. 5 is a side sectional view of the present invention.
Fig. 6 is the structure schematic diagram of the welded structure between the welding flange body and the oil tank shell.
The welding flange comprises a welding flange body 1, a welding part 2, an opening 21, a circular through hole 22, a buckling part 3, a connecting seat 31, a positioning ring 32, a positioning plate 33, a clamping block 34, a positioning lug 35 and an oil tank shell 4.
Detailed Description
For making the technical scheme of the utility model clear more, it is right below to combine the figure the utility model discloses further describe, it is any right the utility model discloses technical scheme's technical characteristics carry out the scheme that equivalent replacement and conventional reasoning reachs and all fall into the utility model discloses scope of protection. The utility model discloses in the fixed connection who mentions, fixed setting is the general connected mode among the mechanical field, and welding, bolt and nut are connected and the screw connection all can.
In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description of the present invention and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.
As shown in fig. 1-6, a welding structure for a built-in part of a plastic oil tank comprises a welding flange body 1, wherein the welding flange body 1 comprises a welding part 2 and a buckling part 3, the welding part 2 is of a flat-plate-shaped structure, two ends of the welding part are of arc-shaped structures, the welding part 2 is of a hollow structure, and one arc-shaped end of the welding part 2 is provided with an opening 21 for mold stripping; a plurality of circular through holes 22 are formed in the upper surface of the welding part 2 in a penetrating mode, the circular through holes 22 are evenly distributed on the surface of the welding part 2, and the circular through holes 22 are communicated with an inner cavity of the welding part 2; buckling part 3 is located 2 lower extremes of weld part, and buckling part 3 is hollow discoid structure, and 3 inner walls upper ends of buckling part are equipped with connecting seat 31, connecting seat 31 is connected with 2 bottoms of weld part, and 3 centers of buckling part are equipped with holding ring 32, holding ring 32 upper end is connected with 2 bottoms of weld part, and circumference is equipped with a plurality of locating plates 33 on the holding ring 32 lateral wall, and is a plurality of the one end of locating plate 33 all is connected with 3 inner walls of buckling part and connecting seat 31 inner walls, and 3 one sides of buckling part are equipped with fixture block 34, and the mode that buckling part 3 and built-in parts such as built-in valve, wave breaker passed through the buckle connection matches fixedly.
Furthermore, a chamfer structure is formed between the upper end of the through hole and the upper surface of the welding part 2.
Further, the welding flange body 1 is integrally formed by injection molding.
Furthermore, the welding flange body 1 is made of oil-resistant plastic materials such as HDPE, POM, PA and the like.
Further, the thickness of the inner cavity of the welding part 2 and the thickness of the circular through hole 22 are both 1-1.5 mm.
Furthermore, a positioning bump 35 is disposed at the center of the fastening portion 3 at the bottom of the welding portion 2.
The welding principle is as follows: pressing welding flange body 1 on oil tank casing 4 inner wall through the frock for the oil tank inner wall material enters into 2 inner chambers of weld part through circular through-hole 22, and in welding process, the extrusion is spread whole inner chamber gradually, treats after welding process, and oil tank material cooling realizes welding flange body 1's fixed.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (6)
1. The welding structure of the plastic oil tank built-in part is characterized by comprising a welding flange body (1), wherein the welding flange body (1) comprises a welding part (2) and a clamping part (3), the welding part (2) is of a flat-plate-shaped structure, two ends of the welding part are of arc-shaped structures, the welding part (2) is of a hollow structure, an opening (21) is formed in one arc-shaped end of the welding part (2), a plurality of circular through holes (22) penetrate through the upper surface of the welding part (2), the circular through holes (22) are uniformly distributed on the surface of the welding part (2), and the circular through holes (22) are communicated with an inner cavity of the welding part (2); buckling part (3) are located weld part (2) lower extreme, and buckling part (3) are hollow discoid structure, and buckling part (3) inner wall upper end is equipped with connecting seat (31), connecting seat (31) are connected with weld part (2) bottom, and buckling part (3) center is equipped with holding ring (32), holding ring (32) upper end is connected with weld part (2) bottom, and circumference is equipped with a plurality of locating plates (33) on holding ring (32) lateral wall, and is a plurality of the one end of locating plate (33) all is connected with buckling part (3) inner wall and connecting seat (31) inner wall, and buckling part (3) one side is equipped with fixture block (34).
2. The welding structure of the built-in part of the plastic oil tank as claimed in claim 1, wherein the upper end of the through hole and the upper surface of the welding part (2) are in a chamfered structure.
3. The welding structure of the plastic fuel tank built-in part as claimed in claim 1, wherein the welding flange body (1) is integrally formed by injection molding.
4. The welding structure of the plastic fuel tank built-in part as claimed in claim 1, wherein the welding flange body (1) is made of oil-resistant plastic.
5. The welding structure of the plastic fuel tank built-in part according to claim 1, wherein the thickness dimension of the inner cavity of the welding part (2) and the thickness dimension of the circular through hole (22) are both 1-1.5 mm.
6. The plastic fuel tank built-in member welding structure as claimed in claim 1, wherein a positioning projection (35) is provided at the bottom of the welding portion (2) at the center of the fastening portion (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222420013.7U CN218616230U (en) | 2022-09-13 | 2022-09-13 | Welding structure for built-in part of plastic oil tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222420013.7U CN218616230U (en) | 2022-09-13 | 2022-09-13 | Welding structure for built-in part of plastic oil tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218616230U true CN218616230U (en) | 2023-03-14 |
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ID=85466941
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222420013.7U Active CN218616230U (en) | 2022-09-13 | 2022-09-13 | Welding structure for built-in part of plastic oil tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218616230U (en) |
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2022
- 2022-09-13 CN CN202222420013.7U patent/CN218616230U/en active Active
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