Welding clamping device for automobile ventilation pipe

Abstract

The utility model discloses a welding clamping device used for an automobile ventilation pipe, which comprises a clamping device body used for positioning the ventilation pipe and a welding piece, the ventilation pipe comprises a connecting part, and the welding piece comprises a connecting piece, a first welding frame and a second welding frame. The clamping device body comprises a support used for supporting the connecting part, a first fixing arm, a second fixing arm, a first fixing assembly used for fixing the connecting piece, a second fixing assembly used for fixing the first welding frame and a third fixing assembly used for fixing the second welding frame, wherein the first fixing arm and the second fixing arm are used for fixing the connecting part to the support. The first fixing arm is used for fixing the end, connected with the connecting piece, of the connecting part, the second fixing arm is movably connected to the support in the axial direction of the connecting part, and the third fixing assembly is movably connected to the support in the radial direction of the connecting part. By means of automatic replacement of the clamping assemblies, similar connecting pieces can be welded in the same clamping device, the welding efficiency is improved, and the machining cost is reduced.

Description

Technical Field

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

[0002] Automobile ventilation pipes are generally formed by blow molding, welding and other processes in a mold. 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, during the welding process, it is easy for adjacent connectors to be welded at similar positions, which leads to interference between the clamping components of the connectors, making it difficult to weld in one step, reducing the welding efficiency, and increasing the processing cost due to the added clamping device. Summary of the invention

[0003] The technical problem to be solved by the utility model is to realize welding of similar connecting parts in the same clamping device by automatically replacing the clamping components, thereby improving welding efficiency and reducing processing costs.

[0004] The technical solution adopted by the utility model to solve the above-mentioned problem is as follows: a welding clamping device for automobile ventilation pipe, comprising a clamping device body for positioning the ventilation pipe and the welding part, the ventilation pipe comprising a connecting part, the welding part comprising a connecting part, a first welding frame and a second welding frame, the connecting part is arranged at one end of the connecting part, the first welding frame and the second welding frame are respectively arranged on both sides of the other end of the connecting part, the clamping device body comprises a bracket for supporting the connecting part, a first fixing arm and a second fixing arm for fixing the connecting part on the bracket, a first fixing assembly for fixing the connecting part, a second fixing assembly for fixing the first welding frame and a third fixing assembly for fixing the second welding frame, the first fixing arm is used to fix one end of the connecting part connected to the connecting part, the second fixing arm is used to fix one end of the connecting part connected to the first welding frame (3), the second fixing arm is movably connected to the bracket along the axial direction of the connecting part, and the third fixing assembly is movably connected to the bracket along the radial direction of the connecting part;

[0005] The first welding frame comprises a bending groove, one side of which is welded to the connecting portion;

[0006] The second fixing assembly includes a clamping claw for clamping the first welding frame and a fixing block for preventing the bending groove from deforming. The fixing block is arranged in the bending groove. There are three clamping claws in total, and the three clamping claws act on the left, right and bottom sides of the bending groove respectively. The clamping claw arranged at the bottom of the bending groove is provided with an in-place sensor for judging whether the first welding frame and the clamping claw are against each other.

[0007] The second welding frame is provided with a connecting hole, and the third fixing assembly includes a moving seat, which is moved along the axial direction of the connecting hole by a cylinder, and the moving seat is provided with a connecting column plugged into the connecting hole, and the bottom end of the connecting column is provided with a flange, and the flange is abutted against the outer side of the second welding frame, and the moving seat is also rotatably connected with a third fixing arm, and the third fixing arm is abutted against the inner side of the second welding frame;

[0008] The upper limit position of the third fixed arm is hinged with a fixing claw, and the fixing claw is provided with three fixing protrusions. When the three fixing protrusions abut against the second welding frame, they are arranged along the circumference of the connecting hole.

[0009] Compared with the prior art, the advantages of the utility model are: the connecting part of the ventilation duct of the utility model is positioned by the first fixing arm and the second fixing arm, which is convenient for fixing the connecting part and ensuring the stability of the connecting part during the welding process. In order to ensure that the first welding frame and the second welding frame can be welded in a clamping device, the first welding frame is fixed by the second fixing assembly to facilitate the welding work of the welding gun. After the first welding frame completes welding, the second fixing arm moves to avoid the welding position of the second welding frame. At the same time, the third fixing assembly moves the second connecting part to the welding position, and then the second fixing arm fixes the connecting part for the second time. At the same time, the second fixing assembly can also play the role of fixing the connecting part, ensuring the accuracy of the position of the connecting part, making the second connecting part more accurate during the positioning process, thereby achieving the purpose of welding two similar connecting parts in the same clamping device, improving welding efficiency, reducing processing costs, avoiding the situation of positioning twice, and improving the relative position accuracy between the first welding frame and the second welding frame.

[0010] Through the design of the fixing block, when the left and right clamps clamp the first welding frame, deformation of the first welding frame can be avoided, thereby ensuring the integrity of the structure of the first welding frame. The cooperation between the bottom clamps and the fixing block can ensure that the first welding frame is in height. The in-place sensor is used to determine whether the second fixing component clamps the first welding frame in place, thereby ensuring the accuracy of the first welding frame during welding.

[0011] By setting the movable seat, the second welding frame can be automatically put in place, the design of the connecting column can locate the radial direction of the first welding frame, and the design of the flange and the third fixed arm can accurately locate the axis of the second welding frame, thereby ensuring the accuracy of the second welding frame during welding. The fixed claw is connected in the direction of the limited hinge, and can form a stable fixed structure with the rotation of the third fixed arm to fix the second welding frame. At the same time, the design of the three fixed protrusions can make the second welding frame evenly stressed when fixed, more stable, and not easy to dislocate during welding.

[0012] As an improvement of the present invention, a fixing groove and a fixing hole are provided at one end of the connecting part connected to the first welding frame, and the fixing groove and the fixing hole are arranged on two opposite sides. A connecting seat for placing the connecting part is provided on the bracket, and a ejector pin cooperating with the fixing hole is provided on the connecting seat. 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 greater stability through the cooperation of the fixing hole, the connecting seat and the ejector pin, and will not deviate, thereby ensuring the accuracy of welding. 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.

[0013] 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.

[0014] 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. 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, so as to achieve the fixation of the connecting part and avoid the situation in which, when the connecting part is not placed in place during the automated welding process, the fixing of the connecting part by the first fixed arm and the second fixed arm causes damage to the connecting part.

[0015] 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.

[0016] 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

[0017] Figure 1 It is a structural schematic diagram of the utility model when the overall structure is being welded on the first welding frame.

[0018] Figure 2 This utility model Figure 1 Schematic diagram of the enlarged structure of the middle part I

[0019] Figure 3 It is a schematic diagram of the installation structure of the second welding frame of the utility model and the connecting part during welding (without the second fixing component).

[0020] Figure 4 It is a structural schematic diagram of the utility model after the welding of the first welding frame and the second welding frame is completed.

[0021] Figure 5 It is a schematic diagram of the ejector installation structure of the utility model.

[0022] Figure 6 It is a schematic diagram of the structure of the second fixing component of the utility model.

[0023] Figure 7 It is a schematic diagram of the structure of the first fixing component of the utility model.

[0024] Figure 8 It is a schematic diagram of the structure of the third fixing component of the utility model.

[0025] Fig. 9 It is a structural schematic diagram of a positioning seat of the utility model.

[0026] Fig.10 It is a structural schematic diagram of the connection between the support arm and the positioning seat of the utility model.

[0027] As shown in the figure: 1. connecting part, 1.1. fixing groove, 1.2. fixing hole, 2. connecting piece, 3. first welding frame, 3.1. bending groove, 4. second welding frame, 4.1. connecting hole, 5. bracket, 5.1. connecting seat, 6. first fixed arm, 7. second fixed arm, 8. first fixing component, 8.1. positioning seat, 8.2. positioning column, 8.3. ejector rod, 8.4. protective ring, 8.5. connecting ball, 8.6. spring, 8.7. connecting groove, 9. second fixing component, 9.1. fixing block, 9.2. clamping claw, 10. third fixing component, 10.1. moving seat, 10.2. connecting column, 10.3. flange, 10.4. third fixing arm, 10.5. fixing claw, 10.6. fixing protrusion, 10.7. positioning protrusion, 11. ejector pin, 12. in-place sensor. DETAILED DESCRIPTION

[0028] The embodiments of the present utility model are further described below in conjunction with the accompanying drawings.

[0029] like Figure 1-3As shown, a welding clamping device for automobile ventilation pipe includes a clamping device body for positioning the ventilation pipe and the welding part, the connecting part ventilation pipe includes a connecting part 1, the welding part includes a connecting part 2, a first welding frame 3 and a second welding frame 4, the connecting part 2 is arranged at one end of the connecting part 1, the first welding frame 3 and the second welding frame 4 are respectively arranged on both sides of the other end of the connecting part 1, the clamping device body includes a bracket 5 for supporting the connecting part 1, a first fixing arm 6 and a second fixing arm 7 for fixing the connecting part 1 on the bracket 5, a first fixing assembly 8 for fixing the connecting part 2, a second fixing assembly 9 for fixing the first welding frame 3 and a third fixing assembly 10 for fixing the second welding frame 4, the first fixing arm 6 is used to fix one end of the connecting part 1 connected to the connecting part 2, the second fixing arm 7 is used to fix one end of the connecting part 1 connected to the first welding frame 3, the second fixing arm 7 is movably connected to the bracket 5 along the axial direction of the connecting part 1, and the third fixing assembly 10 is movably connected to the bracket 5 along the radial direction of the connecting part 1.

[0030] like Figure 4 , Figure 5 As shown, one end of the connecting part 1 connected to the first welding frame 3 is provided with a fixing groove 1.1 and a fixing hole 1.2, and the fixing groove 1.1 and the fixing hole 1.2 are arranged on opposite sides. A connecting seat 5.1 for placing the connecting part 1 is provided on the bracket 5, and a ejector pin 11 cooperating with the fixing hole 1.2 is provided on the connecting seat 5.1. The ejector pin 11 is movably connected to the connecting part 1 through a cylinder, and the ejector pin 11 is connected to the cylinder through a tilting rod, and the middle part of the tilting rod is hinged on the connecting seat 5.1. The second fixed arm 7 of the lever cooperates with the fixing groove 1.1 to fix the connecting part 1, and the connection between the connecting seat 5.1 and the connecting part 1 is an arc surface, which fits with the surface of the connecting part 1.

[0031] like Figure 4-6 As shown, the first welding frame 3 includes a bending groove 3.1, one side of the bending groove 3.1 is welded to the connecting part 1, the second fixing assembly 9 includes a clamping jaw 9.2 for clamping the first welding frame 3 and a fixing block 9.1 for preventing the bending groove 3.1 from deforming, the fixing block 9.1 is arranged in the bending groove 3.1, and there are three clamping jaws 9.2 in total, and the three clamping jaws 9.2 act on the left, right and bottom sides of the bending groove 3.1 respectively, and the three clamping jaws 9.2 are driven and controlled by three cylinders respectively to achieve the purpose of clamping the first welding frame 3, and at the same time, a limiting step is provided on the fixing block 9.1, which is offset against the notch provided at the bottom of the bending groove 3.1 on the first welding frame 3 to achieve the limiting of the first welding frame 3 in the front and rear directions, and the clamping jaw 9.2 provided at the bottom of the bending groove 3.1 is provided with an in-place sensor 12 for judging whether the first welding frame 3 and the clamping jaw 9.2 are offset.

[0032] like Figure 1-3 As shown, the first fixed arm 6 and the second fixed arm 7 are rotatably connected to the bracket 5 through a cylinder, as shown in FIG. Figure 2 As shown, when the first welding frame 3 is welded to the welding piece 2, the second welding frame 4 is fixed on the third fixing assembly 10 and does not reach the welding point between the connecting portion 1 and the second welding frame 4. At this time, the second fixing arm 7 is fixed on the fixing groove 1.1. Figure 3 As shown, after the welding of the first welding frame 3 is completed, the second fixed arm 7 rotates first to cancel the connection with the connecting part 1, and after moving along the connecting part 1, it rotates in the opposite direction again to abut against the end of the connecting part 1 to fix the connecting part 1 again, and then the third fixing component 10 moves the second welding frame 4 to the welding point between the connecting part 1 and the second welding frame 4, so that the welding gun can weld the second welding frame 4. In this process, the fixing height of the second fixed arm 7 to the fixing groove 1.1 is different from that to the fixing height of the end of the connecting part 1. Conventional fixing is likely to cause poor fixing effect. The use of the cylinder to rotate the connection direction can solve the problem of poor fixing effect of the second fixed arm 7.

[0033] At the same time, the second fixed arm 7 is to ensure the stability and accuracy of the welding of the first welding frame 3. After the welding of the first welding frame 3 is completed, the cooperation of the first welding frame 3 and the second fixed assembly 9 can also position the connection part 1. After the welding of the second welding frame 4 is completed, the positional relationship between the first welding frame 3 and the second welding frame 4 can be ensured. The first fixed arm 6 always maintains the function of fixing the connection part 1, ensures the stability of the connection part 1, and can prevent the second welding frame 4 from deviating during welding, further ensures the relative positional relationship between the first welding frame 3 and the second welding frame 4, and improves the welding accuracy.

[0034] like Figure 7 As shown, the first fixing assembly 8 includes a positioning seat 8.1 and a positioning column 8.2. The positioning column 8.2 is connected along the axial movement of the welding part 2. The welding part 2 is fixed by the positioning seat 8.1 and the positioning column 8.2. When fixing the welding part 2, the welding part 2 is sleeved on the positioning column 8.2, and then the positioning column 8.2 is moved along the axial direction of the welding part 2 to abut against the positioning seat 8.1, thereby realizing the positioning of the welding part 2. The first fixing assembly 8 also includes a push rod 8.3. The push rod 8.3 is arranged on the side of the welding part 2 away from the connecting part 1. The push rod 8.3 is used to abut the welding part 2 so that the welding part 2 and the connecting part 1 are tightly pressed. Because there will be a gap between the positioning column 8.2 and the welding part 2 during the assembly process, it is easy for the positioning of the welding part 2 to be not accurate enough. Through the action of the push rod 8.3, the welding part 2 and the connecting part 1 are pressed tightly, and the accuracy of the welding height of the welding part 2 can be guaranteed.

[0035] Another connecting seat is also provided on the bracket 3, and the other connecting seat is used to place the end of the connecting part 1 close to the welding part 2. A limiting step is provided on the side of the other connecting seat away from the connecting seat 3.1. The end of the connecting part 1 is abutted against the end of the limiting step. Through the dual positioning design of the limiting step and the ejector pin 11, the connecting part 1 can be accurately positioned to ensure the accuracy and effectiveness of the welding, and it can also be judged whether the quality of the connecting part 1 is qualified. If the connecting part 1 cannot be abutted against the limiting step, the connecting part 1 is too short. If the connecting part 1 cannot be installed on another connecting seat, the connecting part is too long.

[0036] The positioning column 8.2 is fixedly connected to another movable seat, and the other movable seat is moved along the axial direction of the weldment by a cylinder drive. A high-temperature resistant protective ring 8.4 is provided at the connection between the other movable seat and the positioning column 8.2. During the welding process of the weldment 2, the weldment 2 will be hot and easy to deform. The design of the protective ring 8.4 can not only prevent the welding gun from generating high temperature effects on the other movable seat, but also protect the weldment 2 and prevent abnormal deformation of the weldment 2.

[0037] like Fig. 9 , Fig.10 As shown, the positioning seat 8.1 is connected to a support arm, and four springs 8.6 are arranged between the positioning seat 8.1 and the support arm. The four springs 8.6 are evenly distributed in an array along the circumference of the positioning seat 8.1. A connecting ball 8.5 is arranged on the side of the positioning seat 8.1 close to the support arm, and a connecting groove 8.7 cooperating with the connecting ball 8.5 is arranged on the support arm. The connecting ball 8.5 can rotate in the connecting groove 8.7. When the positioning seat 8.1 and the positioning column 8.2 position the weldment 2, although the weldment 2 is sleeved on the positioning column 8.2, there may be some errors between the axis of the weldment 2 and the axis of the positioning column 8.2. By designing the connecting ball 8.5 and the connecting groove 8.7, and coordinating with the circumferentially distributed springs 8.6, the error can be corrected, so that the coaxiality of the axis of the weldment 2 and the axis of the positioning column 8.2 is higher.

[0038] like Figure 8As shown, the second welding frame 4 is provided with a connecting hole 4.1, and the third fixing assembly 10 includes a moving seat 10.1, which is moved along the axial direction of the connecting hole 4.1 by a cylinder, and a connecting column 10.2 plugged into the connecting hole 4.1 is provided on the moving seat 10.1, and a flange 10.3 is provided at the bottom end of the connecting column 10.2, and four positioning protrusions 10.7 are provided on the flange 10.3, and the four positioning protrusions 10.7 are against the outer side of the second welding frame 4, and the moving seat 10.1 is also rotatably connected to the third fixing arm 10.4, and the third fixing arm 10.4 abuts against the inner side of the second welding frame 4, the third fixed arm 10.4 is hinged with a fixing claw 10.5 at the upper limit position, and the fixing claw 10.5 is provided with three fixing protrusions 10.6, and the three fixing protrusions 10.6 are arranged along the circumference of the connecting hole 4.1 when the three fixing protrusions 10.6 abut against the second welding frame 4, and the four positioning protrusions 10.7 are also arranged along the circumference of the connecting hole 4.1, and the four positioning protrusions 10.7 and the three fixing protrusions 10.6 are staggered, so that when the second welding frame 4 is fixed on the third fixing component 10, there are more positioning points and higher accuracy.

[0039] 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 clamping device for an automobile ventilation pipe, comprising a clamping device body for positioning the ventilation pipe and a welding part, the ventilation pipe comprising a connecting part (1), the welding part comprising a connecting part (2), a first welding frame (3) and a second welding frame (4), the connecting part (2) being arranged at one end of the connecting part (1), the first welding frame (3) and the second welding frame (4) being arranged at two sides of the other end of the connecting part (1), characterized in that: The clamping device body comprises a bracket (5) for supporting the connecting part (1), a first fixing arm (6) and a second fixing arm (7) for fixing the connecting part (1) on the bracket (5), a first fixing assembly (8) for fixing the connecting piece (2), a second fixing assembly (9) for fixing the first welding frame (3), and a third fixing assembly (10) for fixing the second welding frame (4), wherein the first fixing arm (6) is used to fix one end of the connecting part (1) connected to the connecting piece (2), the second fixing arm (7) is used to fix one end of the connecting part (1) connected to the first welding frame (3), the second fixing arm (7) is movably connected to the bracket (5) along the axial direction of the connecting part (1), and the third fixing assembly (10) is movably connected to the bracket (5) along the radial direction of the connecting part (1); The first welding frame (3) comprises a bending groove (3.1), and one side of the bending groove (3.1) is welded to the connecting portion (1); The second fixing assembly (9) comprises a clamping claw (9.2) for clamping the first welding frame (3) and a fixing block (9.1) for preventing the bending groove (3.1) from deforming. The fixing block (9.1) is arranged in the bending groove (3.1). A total of three clamping claws (9.2) are provided. The three clamping claws (9.2) act on the left, right and bottom sides of the bending groove (3.1) respectively. The clamping claw (9.2) arranged at the bottom of the bending groove (3.1) is provided with an in-position sensor (12) for judging whether the first welding frame (3) and the clamping claw (9.2) are in contact with each other. The second welding frame (4) is provided with a connecting hole (4.1), the third fixing assembly (10) comprises a movable seat (10.1), the movable seat (10.1) is moved axially along the connecting hole (4.1) by a cylinder, the movable seat (10.1) is provided with a connecting column (10.2) plugged into the connecting hole (4.1), the bottom end of the connecting column (10.2) is provided with a flange (10.3), the flange (10.3) is against the outer side of the second welding frame (4), and the movable seat (10.1) is also rotatably connected with a third fixing arm (10.4), the third fixing arm (10.4) is against the inner side of the second welding frame (4); The third fixed arm (10.4) is hingedly connected to an upper limit position with a fixed claw (10.5), and the fixed claw (10.5) is provided with three fixed protrusions (10.6). When the three fixed protrusions (10.6) abut against the second welding frame (4), they are arranged along the circumference of the connecting hole (4.1).

2. A welding clamping 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) connected to the first welding frame (3); the fixing groove (1.1) and the fixing hole (1.2) are arranged on two opposite sides; a connecting seat (5.1) for placing the connecting portion (1) is provided on the bracket (5); a top pin (11) cooperating with the fixing hole (1.2) is provided on the connecting seat (5.1); and the second fixing arm (7) cooperates with the fixing groove (1.1) to fix the connecting portion (1).

3. A welding clamping device for automobile ventilation pipe according to claim 2, characterized in that: The ejector pin (11) is movably connected to the connecting portion (1) via a cylinder.

4. A welding clamping device for automobile ventilation pipe according to claim 2, characterized in that: The first fixed arm (6) and the second fixed arm (7) are rotatably connected to the bracket (5) via a cylinder.

5. A welding clamping device for automobile ventilation pipe according to claim 1, characterized in that: The first fixing assembly (8) comprises a positioning seat (8.1) and a positioning column (8.2), wherein the positioning column (8.2) is connected to the connecting member (2) in an axially movable manner, and the connecting member (2) is fixed by the positioning seat (8.1) and the positioning column (8.2).

6. A welding clamping device for automobile ventilation pipe according to claim 5, characterized in that: The first fixing assembly (8) further comprises a push rod (8.3), the push rod (8.3) being arranged on a side of the connecting member (2) away from the connecting portion (1), the push rod (8.3) being used to abut against the connecting member (2) so that the connecting member (2) and the connecting portion (1) are tightly abutted.

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