Welding positioning device for automobile ventilation pipe

Abstract

The utility model discloses a welding positioning device for an automobile ventilation pipe, which comprises a positioning device body for positioning the ventilation pipe and two welding pieces, the positioning device body comprises a support used for supporting the connecting part, first fixing arms and second fixing arms used for fixing the connecting part to the support, and fixing assemblies used for fixing a welding piece, the number of the first fixing arms is two, the number of the second fixing arms is two, and the fixing assemblies are used for fixing the welding piece along the axis of the welding piece; the first fixing arm and the second fixing arm are rotationally connected to the support through the air cylinder, the first fixing arm is fixed to the end, close to the welding piece, of the connecting part, and the second fixing arm is fixed to the end, away from the welding piece, of the connecting part. The positioning device can position a product and a welding piece at the same time, then welding is conducted, and the welding accuracy of the product is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of automobile ventilation pipe forming and processing, in particular to a welding positioning device for automobile ventilation pipes. Background Art

[0002] Automobile ventilation pipes are generally formed by blow molding, welding and other processes. In the process of welding automobile ventilation pipes and other accessories, the ventilation pipe itself is basically the basis, and then the connectors and the ventilation pipe are aligned and welded in turn. However, the symmetry accuracy requirements of some connectors are relatively high. When the connectors are aligned and welded in turn, it is inevitable that there will be insufficient symmetry, which makes the welding quality of automobile ventilation pipe products low. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a welding positioning device for automobile ventilation pipes, which can simultaneously position a product and a welding piece and then weld the product to ensure the welding accuracy of the product.

[0004] The technical solution adopted by the utility model to solve the above-mentioned problem is as follows: it includes a positioning device body for positioning the ventilation pipe and two welding parts, the ventilation pipe includes a connecting part, the positioning device body includes a bracket for supporting the connecting part, a first fixed arm and a second fixed arm for fixing the connecting part on the bracket, and a fixing assembly for fixing the welding part, the first fixed arm, the second fixed arm and the fixing assembly are each provided with two, and the fixing assembly fixes the welding part along the axis of the welding part; the first fixed arm and the second fixed arm are rotatably connected to the bracket by a cylinder, the first fixed arm is fixed to one end of the connecting part close to the welding part, and the second fixed arm is fixed to one end of the connecting part away from the welding part.

[0005] Compared with the prior art, the advantages of the utility model are: the first fixing arm and the second fixing arm are used to fix the connection part. After the two connection parts on the ventilation pipe are fixed, the product is fixed, and the welding part is fixed along the axis of the welding part by the fixing component. When the fixing component is stable, the accuracy of the positioning of the welding part can be guaranteed, and the two fixing components can be adjusted to ensure the accuracy of the positioning of the welding part, so that when the two fixing components are symmetrically arranged according to the center line of the product, the positioning of the welding part can also be symmetrically arranged with respect to the product, and then when the welding parts are welded, the welding symmetry of the two welding parts is guaranteed. If the positioning of the automobile ventilation pipe product is inaccurate, the process of invalid welding can be avoided.

[0006] As an improvement of the present invention, a fixing groove and a fixing hole are provided at one end of the connecting part away from the welding part, and the fixing groove and the fixing hole are arranged on two opposite sides. A first connecting seat is provided on the bracket, and the first connecting seat is used to support the end of the connecting part away from the welding part. The first connecting seat is provided with a pin that cooperates with the fixing hole, and the second fixing arm cooperates with the fixing groove to fix the connecting part. Through the improvement, the connection part can be placed on the bracket with stronger stability through the cooperation of the fixing hole, the connecting seat and the pin, and will not deviate, thereby ensuring the accuracy of product positioning. Through the cooperation of the fixing groove and the second fixing arm, the connection can be prevented from jumping and deviating, further ensuring the stability of the connecting part placed on the bracket.

[0007] As an improvement of the utility model, the ejector pin is movably connected to the connecting part through a cylinder. Through the improvement, the movable connection of the ejector pin can make the ejector action more flexible. When the connecting part is placed on the connecting seat, the ejector pin can position the connecting part. If the connecting part is not accurately installed on the connecting seat, the connecting part and the first welding frame cannot be welded under the action of the ejector pin, thereby avoiding incorrect welding. The movable connection of the ejector pin will not cause interference between the connecting part and the ejector pin when the connecting part is placed automatically, thereby causing damage to the ejector pin or the connecting part.

[0008] As an improvement of the utility model, a second connecting seat is also provided on the bracket, and the second connecting seat is used to place one end of the connecting part close to the welding part. A limiting step is provided on the side of the second connecting seat away from the first connecting seat, and the end of the connecting part is abutted against the end of the limiting step. Through the improvement, the connecting part can be accurately positioned through the dual positioning design of the limiting step and the ejector pin to ensure the accuracy and effectiveness of the welding, and it can also be judged whether the quality of the connecting part is qualified. If the connecting part cannot be abutted against the limiting step, the connecting part is too short. If the connecting part cannot be installed on the second connecting seat, the connecting part is too long.

[0009] As an improvement of the utility model, the first fixed arm and the second fixed arm are rotatably connected to the bracket through a cylinder, and the first fixed arm is fixed to an end of the connecting part close to the welding part. Through the improvement, the first fixed arm and the second fixed arm fix the two ends of the connecting part through the direction of rotation, which can not only fix the connecting part, but also avoid the situation in which the first fixed arm and the second fixed arm cause damage to the connecting part when the connecting part is not placed in place during the automated welding process.

[0010] As another improvement of the present invention, the first fixing assembly includes a positioning seat and a positioning column, the positioning column is connected along the axial movement of the weldment, and the weldment is fixed by the positioning seat and the positioning column. Through the improvement, the weldment can be accurately positioned to ensure the accuracy of welding of the weldment.

[0011] As another improvement of the present invention, the positioning column is fixedly connected to a movable seat, and the movable seat is driven by a cylinder to move along the axial direction of the weldment. A protective ring is provided at the connection between the movable seat and the positioning column. Through the improvement, the design of the protective ring can protect the weldment and avoid abnormal deformation of the weldment.

[0012] As another improvement of the utility model, the positioning seat is connected to a support arm, and a plurality of springs are provided between the positioning seat and the support arm, and the plurality of springs are evenly distributed in an array along the circumference of the positioning seat. Through the improvement, the positioning seat is used to assist the positioning column in positioning the welded part, and the design of the spring can ensure the tight relationship between the positioning seat, the welded part and the welding column, avoiding the situation where the three are not tightly pressed together when the welded part is too short, and also avoiding the situation where the welded part is damaged due to tight pressing when it is too long.

[0013] As another improvement of the present invention, a connecting ball is provided on the side of the positioning seat close to the support arm, and a connecting groove is provided on the support arm to cooperate with the connecting ball. The connecting ball can rotate in the connecting groove. Through the design of the spring, when the positioning seat and the positioning column position the welded part, although the welded part is sleeved on the positioning column, there may be some errors between the axis of the welded part and the axis of the positioning column. Through the design of the connecting ball and the connecting groove, combined with the action of the circumferentially distributed springs, the error can be corrected to make the coaxiality of the axis of the welded part and the axis of the positioning column higher.

[0014] As another improvement of the present invention, the first fixing assembly also includes a push rod, which is arranged on a side of the welding part away from the connecting part, and the push rod is used to support the welding part so that the welding part and the connecting part are tightly pressed together. Through this improvement, the pressing state between the welding part and the connecting part is ensured, and the success rate of welding is guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the overall structure of the utility model.

[0016] Figure 2 This utility model Figure 1 Schematic diagram of the enlarged structure of the middle part I

[0017] Figure 3 It is a schematic diagram of the ejector installation structure of the utility model.

[0018] Figure 4 It is a structural schematic diagram of the fixing assembly of the utility model.

[0019] Figure 5 It is a schematic diagram of the installation structure of the positioning column and the welding parts of the utility model.

[0020] Figure 6 It is a structural schematic diagram of a positioning seat of the utility model.

[0021] Figure 7 It is a structural schematic diagram of the connection between the practical support arm and the positioning seat.

[0022] As shown in the figure: 1. Connecting part, 1.1. Fixing groove, 1.2. Fixing hole, 2. Welding part, 3. Bracket, 3.1. First connecting seat, 3.2. Ejector pin, 3.3. Second connecting seat, 3.4. Limiting step, 4. First fixed arm, 5. Second fixed arm, 6. Fixing assembly, 6.1. Positioning seat, 6.2. Positioning column, 6.3. Moving seat, 6.4. Protective ring, 6.5. Support arm, 6.6. Spring, 6.7. Connecting ball, 6.8. Connecting groove, 6.9. Ejector rod. DETAILED DESCRIPTION

[0023] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0024] like Figure 1-2 As shown, a welding positioning device for automobile ventilation pipe includes a positioning device body for positioning the ventilation pipe and two welding parts 2, the ventilation pipe includes a connecting part 1, the positioning device body includes a bracket 3 for supporting the connecting part 1, a first fixing arm 4 and a second fixing arm 5 for fixing the connecting part 1 on the bracket 3, and a fixing assembly 6 for fixing the welding part 2, the first fixing arm 4, the second fixing arm 5 and the fixing assembly 6 are each provided with two, and the fixing assembly 6 fixes the welding part 2 along the axis of the welding part 2; the first fixing arm 4 and the second fixing arm 5 are rotatably connected to the bracket 3 by a cylinder, the first fixing arm 4 is fixed to one end of the connecting part 1 close to the welding part 2, and the second fixing arm 5 is fixed to one end of the connecting part 1 away from the welding part 2.

[0025] A fixing groove 1.1 and a fixing hole 1.2 are provided at one end of the connecting part 1 away from the welding part 2. The fixing groove 1.1 and the fixing hole 1.2 are arranged on two opposite sides. A first connecting seat 3.1 is provided on the bracket 3. The first connecting seat 3.1 is used to support the end of the connecting part 1 away from the welding part 2. A ejector pin 3.2 cooperating with the fixing hole 1.2 is provided on the first connecting seat 3.1. The second fixing arm 5 cooperates with the fixing groove 1.1 to fix the connecting part 1. The ejector pin 3.2 is movably connected to the connecting part 1 through a cylinder.

[0026] like Figure 5As shown, the bracket 3 is also provided with a second connecting seat 3.3, which is used to place the end of the connecting part 1 close to the welding part 2. A limiting step 3.4 is provided on the side of the second connecting seat 3.3 away from the first connecting seat 3.1, and the end of the connecting part 1 is abutted against the end of the limiting step 3.4.

[0027] like Figure 4 , Figure 5 As shown, the fixing assembly 6 includes a positioning seat 6.1 and a positioning column 6.2. The positioning column 6.2 is connected along the axial movement of the welding piece 2. The welding piece 2 is fixed by the positioning seat 6.1 and the positioning column 6.2. The positioning column 6.2 is fixedly connected to a moving seat 6.3. The moving seat 6.3 is driven by a cylinder to move along the axial direction of the welding piece 2. A protective ring 6.4 is provided at the connection between the moving seat 6.3 and the positioning column 6.2. The fixing assembly 6 also includes a push rod 6.9. The push rod 6.9 is arranged on the side of the welding piece 2 away from the connecting part 1. The push rod 6.9 is used to support the welding piece 2 so that the welding piece 2 and the connecting part 1 are pressed tightly. Because there will be a gap between the positioning column 6.2 and the welding piece 2 during the assembly process, it is easy for the positioning of the welding piece 2 to be not accurate enough. Through the action of the push rod 6.9, the welding piece 2 and the connecting part 1 are pressed tightly, and the accuracy of the welding height of the welding piece 2 can be guaranteed.

[0028] like Figure 6 , Figure 7 As shown, the positioning seat 6.1 is connected to a support arm 6.5, and four springs 6.6 are arranged between the positioning seat 6.1 and the support arm 6.5. The four springs 6.6 are evenly distributed in an array along the circumference of the positioning seat 6.1. A connecting ball 6.7 is arranged on one side of the positioning seat 6.1 close to the support arm 6.5, and a connecting groove 6.8 that cooperates with the connecting ball 6.7 is arranged on the support arm 6.5, and the connecting ball 6.7 can rotate in the connecting groove 6.8.

[0029] The above description is only for the best embodiment of the utility model, but it cannot be understood as a limitation of the claims. The utility model is not limited to the above embodiments, and its specific structure is allowed to be changed. All changes made within the protection scope of the independent claims of the utility model are within the protection scope of the utility model.

Claims

1. A welding positioning device for automobile ventilation pipes, comprising a positioning device body for positioning the ventilation pipes and two welding parts (2), characterized in that: The ventilation duct comprises a connecting portion (1), the positioning device body comprises a bracket (3) for supporting the connecting portion (1), a first fixing arm (4) and a second fixing arm (5) for fixing the connecting portion (1) on the bracket (3), and a fixing assembly (6) for fixing the welded part (2), wherein two of each of the first fixing arm (4), the second fixing arm (5) and the fixing assembly (6) are provided, and the fixing assembly (6) fixes the welded part (2) along the axis of the welded part (2); the first fixing arm (4) and the second fixing arm (5) are rotatably connected to the bracket (3) via a cylinder, the first fixing arm (4) is fixed to one end of the connecting portion (1) close to the welded part (2), and the second fixing arm (5) is fixed to one end of the connecting portion (1) away from the welded part (2).

2. A welding positioning device for automobile ventilation pipe according to claim 1, characterized in that: A fixing groove (1.1) and a fixing hole (1.2) are provided at one end of the connecting portion (1) away from the welding piece (2); the fixing groove (1.1) and the fixing hole (1.2) are arranged on two opposite sides; a first connecting seat (3.1) is provided on the bracket (3); the first connecting seat (3.1) is used to support the end of the connecting portion (1) away from the welding piece (2); a pin (3.2) cooperating with the fixing hole (1.2) is provided on the first connecting seat (3.1); and the second fixing arm (5) cooperates with the fixing groove (1.1) to fix the connecting portion (1).

3. A welding positioning device for automobile ventilation pipe according to claim 2, characterized in that: The ejector pin (3.2) is movably connected to the connecting portion (1) via a cylinder.

4. A welding positioning device for automobile ventilation pipe according to claim 2, characterized in that: The bracket (3) is also provided with a second connection seat (3.3), the second connection seat (3.3) being used to place an end of the connection portion (1) close to the welding piece (2), and a limiting step (3.4) is provided on a side of the second connection seat (3.3) away from the first connection seat (3.1), the end of the connection portion (1) abutting against the end of the limiting step (3.4).

5. A welding positioning device for automobile ventilation pipe according to claim 1, characterized in that: The fixing assembly (6) comprises a positioning seat (6.1) and a positioning column (6.2); the positioning column (6.2) is movably connected along the axial direction of the welding piece (2); and the welding piece (2) is fixed by the positioning seat (6.1) and the positioning column (6.2).

6. A welding positioning device for automobile ventilation pipe according to claim 5, characterized in that: The positioning column (6.2) is fixedly connected to a moving seat (6.3); the moving seat (6.3) is driven by a cylinder to move along the axial direction of the weldment (2); a protective ring (6.4) is provided at the connection between the moving seat (6.3) and the positioning column (6.2).

7. A welding positioning device for automobile ventilation pipe according to claim 5, characterized in that: The positioning seat (6.1) is connected to a support arm (6.5), and a plurality of springs (6.6) are provided between the positioning seat (6.1) and the support arm (6.5), wherein the plurality of springs (6.6) are evenly distributed in an array along the circumference of the positioning seat (6.1).

8. A welding positioning device for automobile ventilation pipe according to claim 7, characterized in that: A connecting ball (6.7) is provided on one side of the positioning seat (6.1) close to the supporting arm (6.5), and a connecting groove (6.8) matching with the connecting ball (6.7) is provided on the supporting arm (6.5), and the connecting ball (6.7) can rotate in the connecting groove (6.8).

9. A welding positioning device for automobile ventilation pipe according to claim 5, characterized in that: The fixing assembly (6) further comprises a push rod (6.9), the push rod (6.9) being arranged on a side of the welding piece (2) away from the connecting portion (1), the push rod (6.9) being used to abut against the welding piece (2) so that the welding piece (2) and the connecting portion (1) are tightly abutted.

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