Exhaust pipe welding fixture

Abstract

This invention discloses an exhaust pipe welding fixture. The exhaust pipe welding fixture according to the invention includes a first support portion and a second support portion. The first support portion has a first positioning portion adapted to position the rear floor connecting plate. The second support portion is connected to the first support portion, and the second support portion has a second positioning portion adapted to cooperate with the exhaust pipe. The second support portion also has a limiting portion adapted to restrict the movement of the exhaust pipe. The exhaust pipe is adapted to be fixed to the rear floor connecting plate. The exhaust pipe welding fixture according to the invention, by providing the first and second positioning portions on the first and second support portions respectively, achieves rapid positioning and assembly of the rear floor connecting plate and the exhaust pipe, resulting in a simple overall structure and low cost. Simultaneously, the limiting portion on the second positioning portion can limit the exhaust pipe, improving the stability of the exhaust pipe welding fixture in clamping the exhaust pipe.

Description

Technical Field

[0001] This invention relates to the field of auxiliary tooling for parts, and in particular to a welding fixture for exhaust pipes. Background Technology

[0002] The connection between the vehicle's exhaust pipe and the rear floor connecting plate is typically achieved using a fixed welding machine. During welding, the fixed welding machine needs to be equipped with clamps to hold the exhaust pipe and the rear floor connecting plate in place, ensuring a relatively stable relationship between them and improving welding precision. However, in existing technologies, the clamps of fixed welding machines are usually heavy and complex in structure, and different clamps are required for different models of exhaust pipes and rear floor connecting plates, making replacement cumbersome and costly. Summary of the Invention

[0003] This invention aims to at least solve one of the technical problems existing in the prior art. Therefore, one object of this invention is to provide an exhaust pipe welding fixture. According to the invention, the exhaust pipe welding fixture is provided with a first positioning part and a second positioning part on a first support part and a second support part, respectively, realizing rapid positioning and assembly of the rear floor connecting plate and the exhaust pipe. Simultaneously, a limiting part is also provided on the second positioning part to limit the exhaust pipe, improving the stability of the exhaust pipe welding fixture in holding the exhaust pipe. The overall structure of the exhaust pipe welding fixture is simple and low in cost.

[0004] The exhaust pipe welding fixture according to the present invention includes a first support portion and a second support portion. The first support portion has a first positioning portion adapted to position the rear floor connecting plate. The second support portion is connected to the first support portion, and has a second positioning portion adapted to cooperate with the exhaust pipe. The second support portion also has a limiting portion adapted to restrict the movement of the exhaust pipe. The exhaust pipe is adapted to be fixed to the rear floor connecting plate.

[0005] The exhaust pipe welding fixture according to the present invention is provided with a first support portion and a first positioning portion on the first support portion. The first positioning portion can cooperate with the rear floor connecting plate to achieve rapid positioning between the rear floor connecting plate and the exhaust pipe welding fixture. Simultaneously, the exhaust pipe welding fixture is also provided with a second support portion and a second positioning portion on the second support portion for cooperating with the exhaust pipe, facilitating rapid positioning between the exhaust pipe and the exhaust pipe welding fixture. The design of the first and second positioning portions improves the assembly efficiency between the exhaust pipe welding fixture, the exhaust pipe, and the rear floor connecting plate. Furthermore, the exhaust pipe welding fixture is provided with a limiting portion on the second support portion to restrict the relative movement between the exhaust pipe and the exhaust pipe welding fixture when the exhaust pipe is assembled onto it, improving the stability of the exhaust pipe welding fixture when holding the exhaust pipe, thereby ensuring the relative stability between the exhaust pipe and the rear floor connecting plate during welding.

[0006] According to one embodiment of the present invention, the first support portion includes a first support block and a second support block, the first support block and the second support block are connected to each other and the first positioning portion is formed on the first support block and the second support block respectively, the rear floor connecting plate cooperates with the first support block and the second support block respectively, and one of the first support block and the second support block is connected to the first support portion.

[0007] According to one embodiment of the present invention, the second support portion is configured as a third support block protruding from the first support block, and the third support block has a positioning groove formed on the surface opposite to the first support block, which is suitable for cooperating with the exhaust pipe. The positioning groove is configured as the second positioning portion, and at least a portion of the exhaust pipe is received in the positioning groove.

[0008] According to one embodiment of the present invention, the third support block has a limiting groove formed on its surface away from the first support block, which communicates with the positioning groove and is orthogonal to the extending direction of the positioning groove. The limiting groove is configured as the limiting part, and the end of the exhaust pipe is received in the limiting groove.

[0009] According to one embodiment of the present invention, the exhaust pipe welding fixture further includes a pressure plate pivotally disposed on the side of the third support block opposite to the first support block, the pressure plate being selectively rotatable to be directly opposite at least a portion of the positioning groove.

[0010] According to one embodiment of the present invention, the first positioning part is configured as positioning pins respectively disposed on the first support block and the second support block, and the rear floor connecting plate is formed with positioning holes suitable for cooperating with the positioning pins.

[0011] According to one embodiment of the present invention, a first flange and a second flange are formed on the rear floor connecting plate, the first flange and the second flange respectively overlapping the two sides of the first support block in the width direction and the two sides of the second support block in the width direction.

[0012] According to one embodiment of the present invention, the exhaust pipe welding fixture further includes a handle, which is connected to the first support block or the second support block.

[0013] According to one embodiment of the present invention, the first support portion and the second support portion are constructed as an integrally formed part.

[0014] According to one embodiment of the present invention, both the first support portion and the second support portion are constructed as plastic parts.

[0015] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0016] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0017] Figure 1 This is a structural diagram of an exhaust pipe welding fixture according to an embodiment of the present invention;

[0018] Figure 2 This is a structural diagram of the first support portion according to an embodiment of the present invention;

[0019] Figure 3 This is an assembly drawing of the exhaust pipe welding fixture according to the present invention, which clamps the exhaust pipe and the rear floor connecting plate.

[0020] Figure label:

[0021] Exhaust pipe welding fixture 1;

[0022] First support part 11, first support block 111, second support block 112, first positioning part 113;

[0023] Second support part 12, third support block 121, second positioning part 122, limiting part 123;

[0024] Pressure plate 13;

[0025] Rear floor connecting plate 14, first flange 141, second flange 142;

[0026] Exhaust pipe 15, handle 15. Detailed Implementation

[0027] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0028] The connection between a vehicle's exhaust pipe and the rear floor connecting plate is typically achieved using a fixed welding machine. During welding, the fixed welding machine needs to be equipped with clamps to hold the exhaust pipe and the rear floor connecting plate, ensuring a relatively stable relationship between them and improving welding precision. However, in existing technologies, the clamps of fixed welding machines are usually heavy and complex in structure, and different clamps are required for different models of exhaust pipes and rear floor connecting plates, making replacement cumbersome and costly.

[0029] The following is for reference. Figures 1-3 The exhaust pipe welding fixture 1 according to an embodiment of the present invention is described.

[0030] The exhaust pipe welding fixture 1 according to the present invention includes a first support portion 11 and a second support portion 12. The first support portion 11 has a first positioning portion 113 adapted to position a rear floor connecting plate 14. The second support portion 12 is connected to the first support portion 11, and a second positioning portion 122 adapted to cooperate with an exhaust pipe 15 is formed on the second support portion 12. A limiting portion 123 adapted to restrict the movement of the exhaust pipe 15 is also formed on the second support portion 12. The exhaust pipe 15 is adapted to be fixed to the rear floor connecting plate 14.

[0031] The exhaust pipe welding fixture 1 according to the present invention is provided with a first support portion 11 and a first positioning portion 113 on the first support portion 11. The first positioning portion 113 can cooperate with the rear floor connecting plate 14 to achieve rapid positioning between the rear floor connecting plate 14 and the exhaust pipe welding fixture 1. At the same time, the exhaust pipe welding fixture 1 is also provided with a second support portion 12 and a second positioning portion 122 on the second support portion 12 for cooperating with the exhaust pipe 15 to facilitate rapid positioning between the exhaust pipe 15 and the exhaust pipe welding fixture 1. The design of the first positioning portion 113 and the second positioning portion 122 improves the assembly efficiency between the exhaust pipe welding fixture 1, the exhaust pipe 15 and the rear floor connecting plate 14. In addition, the exhaust pipe welding fixture 1 is also provided with a limiting portion 123 on the second support portion 12 to limit the relative movement between the exhaust pipe 15 and the exhaust pipe welding fixture 1 when the exhaust pipe 15 is assembled onto the exhaust pipe welding fixture 1, thereby improving the stability of the exhaust pipe welding fixture 1 when holding the exhaust pipe 15, and thus ensuring the relative stability between the exhaust pipe 15 and the rear floor connecting plate 14 during welding.

[0032] In some embodiments, the connection step between the exhaust pipe 15 and the rear floor connecting plate 14 can be as follows: First, the exhaust pipe welding fixture 1 clamps the exhaust pipe 15 and the rear floor connecting plate 14 and moves them to a preset position. Then, the connection between the exhaust pipe 15 and the rear floor connecting plate 14 can be achieved by welding the preset welding points on the rear floor connecting plate 14 with a welding machine. The design of the exhaust pipe welding fixture 1 avoids the step of directly assembling complex fixtures on a fixed welding machine, simplifies the entire process, and reduces costs. At the same time, the setting of the exhaust pipe welding fixture 1 ensures the relative stability between the exhaust pipe 15 and the rear floor connecting plate 14 during welding, thereby improving the welding accuracy.

[0033] According to one embodiment of the present invention, the first support portion 11 includes a first support block 111 and a second support block 112. The first support block 111 and the second support block 112 are connected to each other, and a first positioning portion 113 is formed on the first support block 111 and the second support block 112 respectively. The rear floor connecting plate 14 cooperates with the first support block 111 and the second support block 112 respectively, and one of the first support block 111 and the second support block 112 is connected to the first support portion 11.

[0034] Since the first support part 11 is the structure for assembling the rear floor connecting plate 14, its construction affects the clamping state of the exhaust pipe welding fixture 1 on the rear floor connecting plate 14. The first support part 11 is constructed with a first support block 111 and a second support block 112, and a first positioning part 113 is provided on the first support block 111 and the second support block 112 respectively. When the rear floor connecting plate 14 needs to be assembled onto the exhaust pipe welding fixture 1, the first positioning part 113 on the first support block 111 and the first positioning part 113 on the second support block 112 can be quickly positioned, improving the assembly efficiency of the rear floor connecting plate 14. At the same time, the two first positioning parts 113 can limit the rear floor connecting plate 14, improving the stability of the rear floor connecting plate 14 when it is assembled onto the exhaust pipe welding fixture 1.

[0035] According to one embodiment of the present invention, the second support portion 12 is configured as a third support block 121 protruding from the first support block 111. The third support block 121 has a positioning groove formed on the surface opposite to the first support block 111, which is suitable for cooperating with the exhaust pipe 15. The positioning groove is configured as the second positioning portion 122, and at least a portion of the exhaust pipe 15 is received in the positioning groove.

[0036] Since the second support portion 12 is the structure for assembling the exhaust pipe 15, its construction affects the clamping state of the exhaust pipe welding fixture 1 on the exhaust pipe 15. The second support portion 12 is constructed as a third support block 121 protruding from the first support block 111, and a positioning groove is provided on the surface of the third support block 121 facing away from the first support block 111. When the exhaust pipe 15 is assembled with the second support portion 12, at least a portion of the exhaust pipe 15 can be accommodated within the positioning groove. The positioning groove design enables rapid positioning between the exhaust pipe 15 and the exhaust pipe welding fixture 1. Simultaneously, the positioning groove also limits the movement of the exhaust pipe 15, improving its stability when clamped. Furthermore, the protruding third support block 121 has a height difference from the first support block 111, which can accommodate the bending design on the exhaust pipe 15, improving the connection stability between the exhaust pipe 15 and the second support portion 12.

[0037] According to one embodiment of the present invention, a limiting groove is formed on the surface of the third support block 121 away from the first support block 111, which communicates with the positioning groove and is orthogonal to the extending direction of the positioning groove. The limiting groove is configured as a limiting part 123, and the end of the exhaust pipe 15 is received in the limiting groove.

[0038] Since the limiting part 123 is a component on the second support part 12 used to restrict the movement of the exhaust pipe 15, the structure of the limiting part 123 will affect the clamping state of the exhaust pipe welding fixture 1 on the exhaust pipe 15. Figure 1 As shown, the third support block 121 has a limiting groove on its surface opposite to the first support block 111, which communicates with the positioning groove and extends in a direction orthogonal to the extension direction of the positioning groove. The limiting groove can be understood as the limiting part 123 mentioned in the above embodiment. At least one end of the exhaust pipe 15 is provided with a snap-fit ​​protrusion. When at least a portion of the exhaust pipe 15 is received in the positioning groove, the snap-fit ​​protrusion on the exhaust pipe 15 can be received in the limiting groove. The snap-fit ​​protrusion and the limiting groove cooperate to further limit the exhaust pipe 15 by the second support part 12, thereby improving the stability of the exhaust pipe 15 when the exhaust pipe welding fixture 1 holds the exhaust pipe 15.

[0039] According to one embodiment of the present invention, the exhaust pipe welding fixture 1 further includes a pressure plate 13, which is pivotally disposed on the side of the third support block 121 opposite to the first support block 111. The pressure plate 13 can be selectively rotated to face at least a portion of the positioning groove. Since there is a risk of the exhaust pipe 15 detaching from the positioning groove when at least a portion is received, the exhaust pipe welding fixture 1 also rotatably provides the pressure plate 13 on the side of the third support block 121 opposite to the first support block 111. When at least a portion of the exhaust pipe 15 is received in the positioning groove, the pressure plate 13 can be rotated to a position facing at least a portion of the positioning groove. This can also be understood as the pressure plate 13 being able to rotate to a position that closes at least a portion of the positioning groove, thereby limiting the exhaust pipe 15 in the height direction of the positioning groove, preventing the exhaust pipe 15 from falling out of the positioning groove, and improving the stability of the exhaust pipe welding fixture 1 when clamping the exhaust pipe 15.

[0040] According to one embodiment of the present invention, the first positioning part 113 is configured as a positioning pin respectively disposed on the first support block 111 and the second support block 112, and a positioning hole suitable for cooperating with the positioning pin is formed on the rear floor connecting plate 14. Since the first positioning part 113 is a component for quick positioning of the rear floor connecting plate 14, the configuration of the first positioning part 113 affects the assembly of the rear floor connecting plate 14. The exhaust pipe welding fixture 1 configures the first positioning part 113 as a positioning pin respectively disposed on the first support block 111 and the second support block 112, and forms a positioning hole on the rear floor connecting plate 14. When the rear floor connecting plate 14 is assembled onto the first support part 11, the positioning pin and the positioning hole cooperate to realize the quick positioning and assembly of the rear floor connecting plate 14. At the same time, the positioning pin can limit the rear floor connecting plate 14 in the horizontal direction, improving the stability of the exhaust pipe welding fixture 1 when clamping the rear floor connecting plate 14.

[0041] According to one embodiment of the present invention, a first flange 141 and a second flange 142 are formed on the rear floor connecting plate 14, and the first flange 141 and the second flange 142 respectively overlap the first support block 111 on both sides in the width direction and the second support block 112 on both sides in the width direction.

[0042] Since the rear floor connecting plate 14 is laid flat on the first support part 11, the structure of the rear floor connecting plate 14 will affect the assembly of the rear floor connecting plate 14 with the first support part 11. The rear floor connecting plate 14 has a first flange 141 and a second flange 142. When the rear floor connecting plate 14 is assembled onto the first support part 11, the first flange 141 and the second flange 142 can overlap the two sides of the first support block 111 in the width direction, respectively. At the same time, the first flange 141 and the second flange 142 can also overlap the two sides of the second support block 112 in the width direction, respectively. The design of the first flange 141 and the second flange 142 improves the stability of the rear floor connecting plate 14 when it is assembled onto the first support part 11.

[0043] According to one embodiment of the present invention, the exhaust pipe welding fixture 1 further includes a handle 15, which is connected to a first support block 111 or a second support block 112. After the exhaust pipe welding fixture 1 clamps the exhaust pipe 15 and the rear floor connecting plate 14, it needs to be moved to a preset position to facilitate welding of the exhaust pipe 15 and the rear floor connecting plate 14. Specifically, the exhaust pipe welding fixture 1 is provided with handles 15 at the end of the first support block 111 away from the second support block 112 and at the end of the second support block 112 away from the first support block 111, respectively. After the exhaust pipe welding fixture 1 clamps the exhaust pipe 15 and the rear floor connecting plate 14, the entire exhaust pipe welding fixture 1 and the clamped components can be moved together to the preset position by the handles to facilitate welding of the exhaust pipe 15 and the rear floor connecting plate 14. The handle 15 improves the portability of the exhaust pipe welding fixture 1.

[0044] According to one embodiment of the present invention, the first support portion 11 and the second support portion 12 are constructed as an integral molded part. The integrally molded design of the first support portion 11 and the second support portion 12 improves the structural strength of the entire exhaust pipe welding fixture 1 and also improves the service life of the exhaust pipe welding fixture 1.

[0045] According to one embodiment of the present invention, both the first support portion 11 and the second support portion 12 are constructed of plastic. Since the exhaust pipe welding fixture 1 needs to be moved to a preset welding position after clamping the exhaust pipe 15 and the rear floor connecting plate 14, the weight of the exhaust pipe welding fixture 1 itself will affect the handling of the overall structure. Specifically, the exhaust pipe welding fixture 1 is designed with the first support portion 11, the second support portion 12, and the handle 15 all constructed of plastic, wherein the plastic components can be made of blue MC nylon material. While ensuring structural strength, the plastic construction of the exhaust pipe welding fixture 1 can reduce weight and facilitate handling.

[0046] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0047] In the description of this invention, "first feature" and "second feature" may include one or more of the features.

[0048] In the description of this invention, "a plurality of" means two or more.

[0049] In the description of this invention, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or it may include the first and second features not being in direct contact but being in contact through another feature between them.

[0050] In the description of this invention, the terms "above," "over," and "on top" for the first feature and the second feature include the first feature being directly above or diagonally above the second feature, or simply indicating that the first feature is at a higher horizontal level than the second feature.

[0051] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0052] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An exhaust pipe welding fixture, the exhaust pipe being adapted to be fixed with a rear floor connecting plate, characterized in that it comprises: a first support part (11) provided with a first support block (111) and a second support block (112) connected with each other, the first support block (111) and the second support block (112) are respectively formed with a first positioning part (113) adapted to position the rear floor connecting plate (14), the first positioning part (113) is configured as a positioning pin provided on the first support block (111) and the second support block (112) respectively, the rear floor connecting plate (14) is formed with a positioning hole adapted to cooperate with the positioning pin; a second support part (12) configured as a third support block (121) protruding from the first support block (111), the second support part (12) is formed with a second positioning part (122) adapted to cooperate with the exhaust pipe, the second positioning part (122) is configured as a positioning groove provided on the side surface of the third support block (121) away from the first support block (111), at least part of the exhaust pipe is accommodated in the positioning groove; the second support part (12) is formed with a limiting part (123) adapted to limit the movement of the exhaust pipe, the limiting part (123) is configured as a limiting groove provided on the side surface of the third support block (121) away from the first support block (111), the limiting groove is in communication with the positioning groove and extends in a direction perpendicular to the positioning groove, the end of the exhaust pipe is accommodated in the limiting groove; a pressing plate (13) is pivotally provided on the side of the third support block (121) away from the first support block (111), the pressing plate (13) can be selectively rotated to face at least part of the positioning groove; a handle (15) is configured as two and is respectively provided on the side end of the first support block (111) and the second support block (112) away from each other; the rear floor connecting plate (14) is formed with a first flange (141) and a second flange (142), the first flange (141) and the second flange (142) are respectively overlapped on both sides of the first support block (111) in the width direction and both sides of the second support block (112) in the width direction; wherein the first support part (11) and the second support part (12) are configured as an integral molding, the first support part (11) and the second support part (12) are both configured as plastic parts. ​ ​ ​ ​ ​ ​ ​

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