CN211764909U - Be provided with bracing piece in function groove - Google Patents
Be provided with bracing piece in function groove Download PDFInfo
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- CN211764909U CN211764909U CN201921446349.2U CN201921446349U CN211764909U CN 211764909 U CN211764909 U CN 211764909U CN 201921446349 U CN201921446349 U CN 201921446349U CN 211764909 U CN211764909 U CN 211764909U
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Abstract
The utility model relates to a support bar with functional grooves, which comprises a main body component and an end component, wherein the main body component comprises a body and heads arranged at the two ends of the body, and the end component wraps the heads of the main body component; the surface of the end part assembly is provided with a functional groove, the functional groove is one of a dovetail groove, a U-shaped groove and a trapezoidal groove, the design enables the supporting rod to be bonded with the inner surface of the oil tank in a simple mode, and the product quality is further guaranteed on the premise of meeting the environmental protection requirement.
Description
Technical Field
The invention relates to a supporting rod, in particular to a supporting rod with a functional groove, and belongs to the technical field of hollow structural parts.
Background
Extrusion blow molding is a molding mode of a plastic fuel tank, and a two-piece technology is a technological method of extrusion blow molding, wherein two pieces of blanks are extruded during molding, so that welding and arrangement of built-in parts are facilitated. During forming, pressure is applied to pre-blow air to pre-form the left and right box bodies, and the fuel oil fixes the built-in part and the inner wall of the oil tank.
The plastic fuel tank is manufactured by the method, so that the emission can be reduced, and the arrangement of the built-in parts and the use of the built-in parts with complex structures are facilitated. In a plastic fuel tank (high-pressure fuel tank) used for a hybrid vehicle, the tank needs to be closed under some conditions and to withstand a high internal pressure due to intermittent fuel consumption. It is therefore desirable to use the above-described manufacturing process to arrange fittings or structures within the fuel tank that enhance the strength of the fuel tank to prevent excessive deformation of the fuel tank.
The mode to reinforcing plastics fuel tank intensity has the multiple, and it is a convenient effectual mode to adopt the bracing piece of high strength to restrict the fuel tank and warp, and the bracing piece has multiple forms such as member, support. The support rod needs to meet two points when the support rod plays a role, the first point has enough strength and can resist the tensile force and the pressure generated by high internal pressure, and the second point needs to ensure that the connection between the support rod and the inner wall of the oil tank has enough strength and cannot be separated when the support rod bears the tensile force.
The support rods currently used for support are mainly of two types, welding and structural fixing, due to the constraints of the manufacturing method and the profile of the tank. Firstly, in a welding mode, the material of the supporting rod needs to be a material capable of being welded with the inner surface of the plastic oil tank, so that the material needs to meet the characteristics of weldability and high strength, and the material is difficult to select. Secondly, the structure is fixed, and this kind of mode material selection range is wider, can select the higher material of intensity, nevertheless because utilize the mobility of oil tank material embryo, fixes through the restriction of structure after cooling is qualitative, and the material itself does not bond, and the bracing piece can be in the state that the fuel soaked for a long time, and the deformation of material itself can cause the risk of becoming flexible or coming off. Therefore, a new solution to this technical problem is urgently needed.
Disclosure of Invention
The invention provides the support rod with the functional groove aiming at the technical problems in the prior art, and the design enables the support rod to be bonded with the inner surface of the oil tank in a simple mode, so that the product quality is further ensured on the premise of meeting the environmental protection requirement.
In order to achieve the above object, according to the present invention, a support bar with a functional groove includes a main body assembly and end assemblies, wherein the main body assembly includes a body and heads disposed at two ends of the body, and the end assemblies wrap the heads of the main body assembly. This technical scheme utilizes the rubber coating technology to use two kinds of materials to design the bracing piece for the bracing piece both ends can weld with the oil tank inner wall, and built-in itself also has sufficient intensity simultaneously. The overall strength of the oil tank is greatly improved through the support rod, and the deformation of the oil tank is reduced. In the production and manufacturing process of the high-pressure fuel tank, the support rod is arranged in the high-pressure fuel tank, and the implementation mode is convenient and reliable. The supporting rod is made of two materials by adopting a rubber coating process, so that the defect that the material selection of the supporting rod made of a single material is limited is overcome, and the supporting rod can be welded with the inner wall of the oil tank and has higher strength.
As a modification of the invention, the surface of the end part assembly is provided with a functional groove which is one of a dovetail groove, a U-shaped groove and a trapezoidal groove. Two end faces of the support rod welded with the inner wall of the oil tank are provided with through dovetail grooves, so that materials on the inner wall of the oil tank are extruded into the dovetail grooves during welding, and the connection effect of the support rod and the inner wall of the oil tank is strengthened after cooling in a structure fixing mode.
The support rod body made of a high-strength material (metal, engineering plastic, etc.) may have more processing options while having a higher degree of freedom in shape and structural design.
As a modification of the invention, the number of the functional grooves is at least one, and the functional grooves penetrate through the surface of the whole end assembly. When setting up multichannel function groove, be parallel to each other between groove and the groove, when bracing piece 1 and oil tank inner wall connected, tip 2's surface has certain thickness 6 to be used for with the inner wall welding, the inner wall material that flows can be crowded into function groove 5 insides simultaneously under the pressure effect of compound die, connects more firmly.
As a modification of the invention, the side wall of the functional groove is provided with at least one boss, and the number of the bosses is generally two.
As an improvement of the invention, the body of the support rod is set to be one of H shape, X shape, cylindrical shape and N shape, because the outline of the oil tank is irregular and the stress conditions at different places are inconsistent, according to the specific application, the main body part 2 of the support rod 1 can be designed to be H shape, X shape and the like so as to achieve the best strength effect, and the end part 3 of the support rod 1 can be round, oval, square or other irregular figures so as to be attached to the inner wall of the oil tank. The main body part 2 of the support rod 1 can be made of metal materials or engineering plastics with good fuel resistance and high strength, the end part 3 is made of materials with good welding effect with the inner wall of the oil tank, and PE materials are generally preferred.
As a modification of the invention, the end of the boss is provided with a bulge structure, and forms a U-shaped barb structure with the inner wall of the functional groove. Meanwhile, the end part of the boss is designed with an arc, so that the material can flow conveniently.
A method for forming an oil tank with a support rod provided with a functional groove comprises the following steps,
1) the molding mode is extrusion blow molding, two pieces of parison are fed by a screw and are discharged by a die head to be divided into a left parison and a right parison,
after blanking, firstly placing an intermediate film between the left die and the right die, then closing the dies, and performing by using the intermediate die;
2) the method comprises the following steps that (1) an oil tank is preformed, a mold is opened, a supporting rod is clamped and sent between a left mold and a right mold by a tool fixture, one end of the supporting rod is welded with one side of an oil tank blank, the blank is extruded to form a fluid body to enter a functional groove, and the welding surface and the cooled and shaped fluid body fix the supporting rod;
3) the tool clamp is withdrawn, the left die and the right die are closed, the two ends of the supporting rod are tightly welded with the inner wall of the oil tank, and the flowing body generated by extruding the material blank enters the functional groove.
The oil tank is provided with a support rod of the function groove, the oil tank comprises an oil tank body, the support rod of the function groove is arranged in the oil tank body, the support rod comprises a main body component and an end component, the main body component comprises a body and heads arranged at two ends of the body, the end component wraps the heads of the main body component, and the function groove is arranged into one of a dovetail groove, a U-shaped groove, a V-shaped groove and a trapezoidal groove.
Compared with the prior art, the invention has the advantages that 1) the technical scheme firstly ensures that the main body part 2 of the support rod 1 can be made of metal materials or engineering plastics with better fuel resistance and higher strength, the end part 3 is made of materials with good welding effect with the inner wall of the oil tank, the main body and the end part of the support rod can be made of the same or different materials, the selection range is wider, and the product quality is further reduced on the premise of ensuring the product quality; 2) in the scheme, the functional grooves are ingeniously arranged, and in the production process of the oil tank, the extruded parison is pressed into the functional grooves, so that the support rod and the oil tank are more firmly connected; 3) the side wall of the functional groove is provided with a boss, and the boss structure can strengthen the connecting effect of the end part of the support rod and the inner wall of the oil tank;
4)
the inner purchasing member is reliably fixed with the inner wall of the oil tank by adopting a mode of combining welding and structure fixing, two ends of the supporting rod are welded with the inner wall of the oil tank in the production and manufacturing process, then the material of the inner wall of the oil tank flows into the dovetail grooves at two ends of the supporting rod under the extrusion action, and the connecting effect is strengthened after cooling and shaping; 5) the above design and effect is achieved by a two-piece process of extrusion blow molding. During production and manufacturing, two material blanks are extruded by a blow molding machine, the two material blanks are arranged between the left and right molds, the oil tank is preformed by the aid of the middle mold, and then one end of the support rod is welded on the inner wall of one side of the oil tank through the tool fixture. And then withdrawing the tooling fixture, performing closed extrusion on the dies on the two sides, completing welding of the other end of the supporting rod and the other side wall of the oil tank, and simultaneously extruding and flowing the materials on the inner walls of the oil tanks on the two sides into the dovetail grooves at the two ends of the supporting rod. Then, the oil tank is integrally formed along with pressurization and blowing-up and pressure maintaining inside the oil tank; 6) through the mode, after the whole oil tank is cooled and shaped, the support rod firmly grabs the upper inner wall and the lower inner wall of the fuel tank, and the welding and structure fixing modes ensure that the appearance can be well kept and certain strength can be maintained after the oil tank is subjected to alternately changed internal pressure and long-time oil soaking; 7) for the design of the supporting rod, the preferable structural form is that high-strength materials (metal, engineering plastics and the like) are used as a main body supporting structure, two ends of the supporting rod are encapsulated by materials which can be welded with the inner wall of an oil tank, a plurality of dovetail grooves are arranged on the end face of the supporting rod, the dovetail grooves penetrate in the fixed direction, and the grooves are parallel to each other; 8) the end face shape of the supporting rod can be selected differently according to specific conditions, such as the outline of the inner wall of the oil tank, and the like, such as a circle, an ellipse and the like, so that the supporting rod can be well attached to the inner wall during welding to obtain good welding quality. The shape and structure of the main body made of high-strength material in the middle of the support rod depend on the strength requirement, such as an I-shaped rod, an H-shaped rod, an X-shaped rod and the like. The support rod of the invention can be used independently or not according to specific conditions, and can be matched with other accessories in the oil tank, such as pipelines, breakwaters and the like, so that the support rod can play a role in connecting and fixing the accessories besides enhancing the strength
Drawings
FIG. 1 is an overall schematic view of a support pole, an example of which is an I-shaped pole;
FIG. 2 is a cross-sectional view of the end of the support rod;
FIG. 3 is a cross-sectional view of an end of a support pole in another configuration;
FIG. 3-1 is an enlarged view of a portion of FIG. 3;
FIGS. 4 to 6 are schematic views showing the connection process of the end of the strut to the inner wall of the fuel tank;
FIG. 5-1 is an enlarged view of a portion of FIG. 5;
figure 7 is a cross-sectional view of a fuel tank with a support rod after molding.
In the figure: 1. the support rod, 2, the main part subassembly, 3, the tip subassembly, 4, the head, 5, the function groove, 6, tip subassembly terminal surface thickness, 7, the boss, 10, the mould, 11, the base, 12, frock clamp, 13, the body that flows, 14, the face of weld, 20, the oil tank. 21. A body.
The specific implementation mode is as follows:
for the purpose of enhancing an understanding of the present invention, the present embodiment will be described in detail below with reference to the accompanying drawings.
Example 1: referring to fig. 1 to 3, a support bar provided with a functional groove includes a main body member 2 and end members 3, wherein the main body member 2 is composed of a body 21 and heads 3 provided at both ends of the body, and the end members wrap the heads of the main body member. As shown in fig. 2, which is a cross-sectional view of the end of the support rod 1, the head 4 of the body member 2 of the support rod 1 is wrapped by the material of the end 3 of the support rod 1, and the manufacturing process preferably adopts an encapsulation process. This technical scheme can utilize the rubber coating technology to use two kinds of materials to design the bracing piece for the bracing piece both ends can weld with the oil tank inner wall, and built-in itself also has sufficient intensity simultaneously, and this scheme can adopt two kinds of materials design bracing piece, and two kinds of materials adopt the rubber coating technology to connect. The parts at the two ends of the supporting rod need to be matched with the material of the inner wall of the oil tank due to welding with the inner wall of the oil tank, the parts which play a supporting role between the two ends do not need to be welded, and high-strength materials including metal materials or engineering plastics with higher strength can be adopted. The support part formed by the high-strength material has flat surface characteristics at two ends, and the material for welding wraps the support part to form connection. The surface of tip subassembly is provided with function groove 5, function groove 5 sets up to one in dovetail, U model groove, V type groove, the dovetail groove, the quantity of function groove is one at least, runs through the surface of whole tip subassembly. When setting up multichannel function groove, be parallel to each other between groove and the groove, when bracing piece 1 and oil tank inner wall connected, tip 2's surface has certain thickness 6 to be used for with the inner wall welding, the inner wall material that flows can be crowded into function groove 5 insides simultaneously under the pressure effect of compound die, connects more firmly.
Example 2: referring to fig. 1-3, fig. 2 and 3, in this scheme, the functional grooves 5 are provided as dovetail grooves, and the dovetail grooves are arranged on the surface of the end part 3 and transversely penetrate through the whole end part 3. According to the specific shape design of the end part 3, a plurality of dovetail grooves can be arranged, and the grooves are parallel to each other. When the support rod 1 is connected with the inner wall of the oil tank, the surface of the end part 2 has a certain thickness 6 for welding with the inner wall, and meanwhile, the inner wall material flowing under the pressure of mold closing can be extruded into the dovetail groove. Fig. 3 shows a schematic cross-sectional view of a support rod 1 having another dovetail groove, and two bosses 7 are provided on the side walls of the dovetail groove, by which a flowing material on the inner wall of an oil tank is squeezed into the bottom of the dovetail groove 5, the material is squeezed into the bottom of the dovetail groove, the bosses 7 can strengthen the connection effect between the end portion 3 of the support rod and the inner wall of the oil tank, the end portion of the boss 7 has a bulging feature, a U-shaped barb effect is integrally formed with the inner wall of the dovetail groove 5, and the end portion of the boss 7 is designed with a circular arc to facilitate the flowing of the material.
Example 3: referring to fig. 1-3, as an improvement of the present invention, the body of the support rod is configured as one of an H shape, an X shape, a cylinder shape and an N shape, because the outline of the fuel tank is irregular and the stress conditions are not consistent in different places, according to specific application, the main body 2 of the support rod 1 may also be configured as an H shape, an X shape, etc. to achieve the best strength effect, and the end 3 of the support rod 1 may also be a circle, an ellipse, a square or other irregular figure to fit the inner wall of the fuel tank. The main body part 2 of the support rod 1 can be made of metal materials or engineering plastics with good fuel resistance and high strength, the end part 3 is made of materials with good welding effect with the inner wall of the oil tank, and PE materials are generally preferred.
The production process comprises the following steps: referring to fig. 1 to 7, a method of forming a fuel tank having a support rod provided with a functional groove, the method comprising,
1) the molding mode is extrusion blow molding, two pieces of parison are fed by a screw and are discharged by a die head to be divided into a left parison and a right parison,
after blanking, firstly placing an intermediate film between the left die and the right die, then closing the dies, and performing by using the intermediate die;
2) the fuel tank is preformed, and firstly, a blank of the fuel tank needs to be preformed. As shown in fig. 4, after the preform is preformed, the mold 10 is opened, and the support bar 1 is clamped and fed between the left and right molds by the tool holder 12. Then as shown in fig. 5, welding one end of the support rod 1 with one side of the oil tank blank 11, and as shown in a detail drawing, the blank 11 is extruded to form a flow body 13 to enter the dovetail groove 5, so that the welding surface 14 and the cooled and shaped flow body 13 simultaneously fix the support rod 1;
3) finally, as shown in fig. 6, the tooling fixture 12 is withdrawn, the left and right molds 10 are closed, the two ends of the support rod 1 are tightly welded with the inner wall of the oil tank, and the fluid generated by extruding the blank 11 enters the dovetail groove 5.
Fig. 4 to 6 show the process of welding and pressure bonding the support rod 1 to the inner wall of the fuel tank during the production and manufacturing process of the fuel tank 20, and the shapes of the mold 10 and the blank 11 are different according to the specific application. Fig. 7 shows the arrangement of the support rod 1 inside the fuel tank 20 after molding. The support rod 1 is arranged in the oil tank 20, two ends of the support rod are respectively connected with the upper inner wall and the lower inner wall of the oil tank 20, and meanwhile, the welding and structural connection mode is used, so that the support rod has high connection strength. When the internal pressure of the fuel tank 20 changes, the support rod 1 receives the pulling force and pressure of the fuel tank wall to maintain the shape of the fuel tank 20 stable.
It should be noted that the above-mentioned embodiments are not intended to limit the scope of the present invention, and all equivalent modifications and substitutions based on the above-mentioned technical solutions are within the scope of the present invention as defined in the claims.
Claims (9)
1. The utility model provides a be provided with bracing piece in function groove, its characterized in that, the bracing piece includes main part subassembly and tip subassembly, and wherein the main part subassembly comprises body and the head that sets up at the body both ends, the tip subassembly is wrapping up the head of main part subassembly.
2. The support bar with a functional groove according to claim 1, wherein the surface of the end assembly is provided with a functional groove which is one of a dovetail groove, a U-shaped groove, a V-shaped groove and a trapezoidal groove.
3. The support rod with functional grooves according to claim 2, wherein the number of the functional grooves is at least one, and the functional grooves penetrate the surface of the whole end assembly.
4. The support bar provided with the functional groove as set forth in claim 3, wherein the side wall of the functional groove is provided with bosses, the number of which is at least one.
5. The support bar provided with the functional groove as set forth in claim 4, wherein the body of the support bar is provided in one of an H-shape, an X-shape, a cylindrical shape, and an N-shape.
6. The support bar provided with functional grooves according to claim 5, wherein the end assembly is provided in one of a circular shape, an oval shape, and a square shape.
7. The support rod with a functional groove as claimed in claim 6, wherein the end of the boss is provided with a raised structure to form a U-shaped barb structure with the inner wall of the functional groove.
8. The fuel tank provided with the function groove support rod as claimed in any one of claims 1 to 7, wherein the fuel tank comprises a fuel tank body, the function groove support rod is arranged in the fuel tank body, the support rod comprises a main body component and end components, the main body component comprises a body and heads arranged at two ends of the body, and the end components wrap the heads of the main body component.
9. A fuel tank provided with a support rod having a functional groove according to claim 8, wherein the functional groove is provided as one of a dovetail groove, a U-shaped groove, a V-shaped groove, and a trapezoidal groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921446349.2U CN211764909U (en) | 2019-09-02 | 2019-09-02 | Be provided with bracing piece in function groove |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921446349.2U CN211764909U (en) | 2019-09-02 | 2019-09-02 | Be provided with bracing piece in function groove |
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| Publication Number | Publication Date |
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| CN211764909U true CN211764909U (en) | 2020-10-27 |
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| CN201921446349.2U Active CN211764909U (en) | 2019-09-02 | 2019-09-02 | Be provided with bracing piece in function groove |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110435418A (en) * | 2019-09-02 | 2019-11-12 | 亚普汽车部件股份有限公司 | A kind of support rod being provided with function trough |
| CN117642305A (en) * | 2021-07-26 | 2024-03-01 | 八千代工业株式会社 | Fuel tank |
-
2019
- 2019-09-02 CN CN201921446349.2U patent/CN211764909U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110435418A (en) * | 2019-09-02 | 2019-11-12 | 亚普汽车部件股份有限公司 | A kind of support rod being provided with function trough |
| CN117642305A (en) * | 2021-07-26 | 2024-03-01 | 八千代工业株式会社 | Fuel tank |
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