Automatic welding device for pedal bracket of new energy automobile

Abstract

The invention discloses an automatic welding device for a new energy automobile pedal bracket, and relates to the technical field of welding equipment, the automatic welding device comprises a turntable, a welding mechanical arm, a fixed bottom plate, a bracket positioning assembly, a clamping jaw cylinder, a translation assembly and a connecting arm; one end of the mounting arm is fixedly connected with a compression roller mounting arm, and the compression roller mounting arm is horizontally and rotatably connected with a compression roller. According to the welding device, the two mounting arms and the compression roller move close to each other relatively, so that the compression roller can press the tips on the upper side and the lower side of the arc-shaped notch of the bracket and forcibly straighten the tips to enable the tips to be attached to the tubular part of the contour frame, and in this way, the tips can be fixedly connected to the joint of the transverse bracket and the tubular part of the contour frame after being welded and melted during welding; by means of the technical scheme, gaps cannot be formed in the tubular portion of the transverse bracket and the tubular portion of the contour frame, then the situation that welding precision is affected due to the fact that gaps or missing are formed in the abutting position of the contour frame and the transverse bracket after welding is avoided, welding stress can be reduced to a certain degree, and interference to a welding mechanical arm during welding is avoided by straightening the tip portion.

Description

Technical Field

[0001] The present invention relates to the technical field of welding equipment, and in particular to an automatic welding device for a pedal bracket of a new energy vehicle. Background Art

[0002] New energy vehicles (NEVs) use unconventional fuels as their power source (or use conventional fuels with new onboard power units), integrating advanced technologies in vehicle power control and drive to create vehicles with advanced technical principles, new technologies, and new structures. New energy vehicles include pure electric vehicles, extended-range electric vehicles, hybrid vehicles, fuel cell electric vehicles, and hydrogen engine vehicles.

[0003] Some models of new energy vehicles, such as SUV models, will be equipped with pedals, such as Figure 9 As shown, the existing footrest 100 generally includes a profile frame 104, a pedal 102, and a bracket, wherein the pedal 102 is fixedly connected to the hollow portion of the profile frame 104, and the pedal 102 is provided with a hollow slot 101. The bracket includes a transverse bracket 105 welded to the profile frame 104, and a longitudinal bracket 106 fixed to the transverse bracket 105 at one end away from the profile frame 104. The transverse bracket 105 is generally connected to the profile frame 104 by welding. When welding, it is usually necessary to An arc-shaped notch is cut out of the end to be welded 105, and the inner diameter of the arc-shaped notch is larger than the outer diameter of the tubular portion of the welded end of the profile frame 104, so that the tubular portion of the welded end of the profile frame 104 can be inserted into the arc-shaped notch to position the profile frame 104 and the cross bracket 105, and then the arc-shaped notch portion is welded so that the profile frame 104 can be welded to the cross bracket 105. However, after the cross bracket 15 is cut out of the arc-shaped notch, the upper and lower sides of the arc-shaped notch (such as Figure 9 As shown in the figure, the tip 103 is relatively sharp and thin, forming a tip 103. In addition, since the inner diameter of the arc-shaped notch is usually larger than the outer diameter of the tubular part of the profile frame 104, there is generally a gap between the tips 103 on the upper and lower sides of the arc-shaped notch and the wall surface of the tubular part of the profile frame 104. During welding, since the tip 103 is relatively thin, it is easily melted by welding. The molten metal liquid may not enter the abutment between the profile frame 104 and the cross bracket 15. As a result, after welding, the tip 103 may cause a gap or partial loss at the position of the profile frame 104 corresponding to the tip 103, resulting in unstable welding and poor reduction of welding stress. In addition, if the tip 103 is curled toward the outside of the cross bracket 105 before welding, it will also affect or interfere with the welding operation. Summary of the Invention

[0004] The purpose of the present invention is to provide an automatic welding device for a pedal bracket of a new energy vehicle to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: An automatic welding device for a pedal bracket of a new energy vehicle includes a turntable and a welding robot arm installed outside the turntable, and further includes: A plurality of fixed base plates are provided and are mounted on the top of the turntable in an array along the axial direction of the turntable; A bracket positioning assembly is provided on the fixed base plate; A clamping cylinder is provided above the fixed base plate and is driven to move horizontally by a translation assembly mounted on the fixed base plate. The cylinder rod of the clamping cylinder is driven to connect to two connecting arms mounted in an upper and lower opposite manner. The mounting arm is connected to the connecting arm, and one end of the mounting arm is fixedly connected to the pressure roller. The pressure roller mounting arm is horizontally rotatably connected to the pressure roller.

[0006] Through the above technical solution, the pedal and the bracket are positioned by the bracket positioning assembly, and the arc-shaped notch of the bracket is engaged with the tubular part of the profile frame of the pedal. Before welding, the two cylinder rods of the clamping cylinder are moved relatively close to each other, so that the two connecting arms are close to each other, and then the two mounting arms and the pressure roller are driven to move relatively close to each other, so that the pressure roller can press the tips of the upper and lower sides of the arc-shaped notch of the bracket, and forcibly straighten the tips so that the tips fit the tubular part of the profile frame. In this way, during welding, after the tip is welded and melted, it can be fixed to the connection between the cross bracket and the tubular part of the profile frame, and no gap or missing will be generated between the cross bracket and the tubular part of the profile frame, thereby avoiding the generation of gaps or missing at the abutment between the profile frame and the cross bracket after welding, which affects the welding accuracy, and can also reduce welding stress to a certain extent. In addition, by straightening the tip, interference with the welding robot arm during welding can be avoided.

[0007] Furthermore, a driving motor is installed at the bottom of the turntable, and the driving motor is used to drive the turntable to rotate.

[0008] Through the above technical solution, the drive motor drives the turntable to rotate at equal angles, so that the pedals and brackets clamped on multiple fixed base plates can be transported to the welding robot arm in turn for welding.

[0009] Furthermore, the bracket positioning assembly includes a support fixed to the fixed base plate, the support is provided with a positioning groove in the form of a notch on the side facing the clamping cylinder, the support is installed with a bracket clamping unit, and the fixed base plate is vertically connected to a pedal positioning unit.

[0010] Through the above technical solution, the longitudinal bracket and the transverse bracket of the bracket are engaged in the positioning groove, and then the transverse bracket is pressed by the bracket clamping unit, so that the bracket can be positioned and installed in the positioning groove. At the same time, the pedal positioning unit positions the pedal, and at the same time, the contour frame of the pedal is engaged with the arc-shaped notch of the transverse bracket.

[0011] Furthermore, the bracket clamping unit includes a clamping cylinder vertically installed on one side of the support, the cylinder rod of the clamping cylinder is driven and connected to a clamping arm, the clamping arm is vertically fixedly penetrated with a clamping rod at one end away from the clamping cylinder, the lower end of the clamping rod is fixed with a clamping wedge, and the lower end of the outer wall of the clamping wedge on the side facing away from the clamping cylinder is provided with a clamping slope.

[0012] Through the above technical solution, the cylinder rod of the clamping cylinder is extended and drives the clamping rod to move downward, so that the clamping wedge moves downward. When the clamping wedge moves downward, the clamping inclined surface contacts the wall of the longitudinal bracket facing the pedal side, so that the longitudinal bracket can be pressed against the inner wall of the positioning groove. After the clamping wedge moves downward into position, the bottom of the clamping wedge contacts the cross bracket, thereby enabling the cross bracket to be positioned and clamped in the positioning groove.

[0013] Furthermore, the clamping rod is threadedly provided on the clamping arm and is positionally connected to the clamping arm through a plurality of nuts.

[0014] Through the above technical solution, the clamping rod is threaded through the clamping arm, so that the length of the lower end of the clamping rod relative to the clamping arm can be adjusted, thereby adjusting the clamping force of the clamping wedge on the horizontal bracket and the vertical bracket.

[0015] Furthermore, the pedal positioning unit includes a support column vertically mounted on a fixed base plate, an upper end of the support column is coaxially and fixedly sleeved with a flange positioning portion, and a large diameter end of the flange positioning portion faces downward.

[0016] Through the above technical solution, the diameter size of the small diameter end of the flange positioning part matches the inner diameter size of the hollow groove on the pedal, so that after the flange positioning part is passed through the hollow groove, it can limit the pedal. At the same time, the outer diameter size of the large diameter end of the flange positioning part is larger than the inner diameter size of the hollow groove, so that the large diameter end of the flange positioning part can limit the downward movement of the pedal, and thus the flange positioning part can limit the pedal.

[0017] Furthermore, the translation assembly includes a cylinder bracket installed on the top of the fixed base plate, a translation cylinder is horizontally installed on the upper end of the cylinder bracket, the translation cylinder is driven and connected to a cylinder seat, and the clamping cylinder is installed on the cylinder seat.

[0018] Through the above technical solution, the cylinder seat is driven by the translation cylinder to move, so that the clamping cylinder can move along the length direction of the contour frame. After the tip is straightened, the clamping cylinder can be driven by the translation cylinder to move away from the contour frame to avoid interfering with the welding operation of the welding robot arm.

[0019] Furthermore, the cylinder seat is hingedly installed with a movable hinge seat, the movable hinge seat is installed with an adjusting cylinder, the adjusting cylinder is driven and connected with a connecting block, the mounting arm is fixed to the end of the connecting block facing away from the clamping cylinder, and the connecting arm is provided with an adjusting unit, which is used to drive the pressure roller to move upward slightly when the mounting arm moves toward the direction of the adjusting cylinder.

[0020] Through the above technical solution, the cylinder rod of the adjusting cylinder is shortened, so that the adjusting unit can trigger the action, and when the pressure roller moves toward the adjusting cylinder, the pressing force of the pressure roller on the cross bracket gradually decreases, that is, when the pressure roller presses the part of the cross bracket away from the tip, the pressing force is greater, and when pressing the tip, the pressing force is slightly reduced. This can not only produce compression and straightening of the cross bracket, but also avoid damage to the tip due to excessive pressing force.

[0021] Furthermore, the adjustment unit includes a sliding pin fixed to the mounting arm, and two vertical plates are fixed to the wall of the connecting arm. A sliding space is formed between the two vertical plates for the mounting arm to pass freely, and the wall of the vertical plate is provided with a special-shaped groove for the sliding pin to be inserted. The special-shaped groove includes an oblique groove and a straight groove in the direction away from the adjusting cylinder, and the sliding pin slides freely in the oblique groove and the straight groove.

[0022] Through the above technical solution, when the sliding pin slides in the straight groove, the pressure roller exerts a greater pressure on the cross bracket. When the sliding pin slides from the straight groove to the inclined groove, the pressure roller will move slightly upward, thereby reducing the squeezing force of the pressure roller on the tip and avoiding damage to the tip.

[0023] Furthermore, the length of the straight groove is greater than the diameter of the sliding pin.

[0024] Through the above technical solution, when the two cylinder rods of the clamping cylinder move away from each other, they drive the mounting arm to move in the direction away from the pedal. Since the adjusting cylinder is hingedly mounted on the cylinder seat, the adjusting cylinder will swing and cause the sliding pin to slide in the straight groove. Since the length of the straight groove is greater than the diameter of the sliding pin, the sliding pin has sufficient space to move in the straight groove, thereby allowing the adjusting cylinder to swing, so that the two mounting arms can move away from each other, and the clamping cylinder can move in the direction away from the pedal.

[0025] Compared with the prior art, the present invention has the following beneficial effects: 1. In the present invention, the pedal and the bracket are positioned by the bracket positioning assembly, and the arc-shaped notch of the bracket is engaged with the tubular part of the profile frame of the pedal. Before welding, the two cylinder rods of the clamping cylinder are relatively moved close to each other, so that the two connecting arms are close to each other, and then the two mounting arms and the pressure roller are driven to move relatively close to each other, so that the pressure roller can press the tips of the upper and lower sides of the arc-shaped notch of the bracket, and forcibly straighten the tips so that the tips fit the tubular part of the profile frame. In this way, during welding, after the tips are welded and melted, they can be fixed to the connection between the cross bracket and the tubular part of the profile frame, without causing a gap between the cross bracket and the tubular part of the profile frame, thereby avoiding the generation of gaps or missing at the abutment between the profile frame and the cross bracket after welding, which affects the welding accuracy, and can also reduce welding stress to a certain extent. In addition, by straightening the tips, interference with the welding robot arm during welding is avoided; 2. In the present invention, the cylinder rod of the pressing cylinder extends and drives the pressing rod to move downward, causing the pressing wedge to move downward. When the pressing wedge moves downward, the pressing inclined surface abuts against the wall of the longitudinal bracket facing the pedal, so that the longitudinal bracket can be pressed against the inner wall of the positioning groove. After the pressing wedge moves downward into position, the bottom of the pressing wedge abuts against the transverse bracket, thereby enabling the transverse bracket to be positioned and clamped in the positioning groove. 3. In the present invention, the cylinder rod of the adjusting cylinder is shortened, so that the adjusting unit can trigger the action, and when the pressure roller moves toward the adjusting cylinder, the pressing force of the pressure roller on the cross bracket gradually decreases, that is, when the pressure roller presses the part of the cross bracket away from the tip, the pressing force is greater, and when pressing the tip, the pressing force is slightly reduced. This can not only produce compression and straightening of the cross bracket, but also avoid excessive pressing force that causes damage to the tip. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic diagram of the overall structure of an automatic welding device for a new energy vehicle pedal bracket in the present invention; Figure 2 for Figure 1 A schematic diagram of the positional relationship from another perspective; Figure 3 Schematic diagram of the positional relationship among the fixed base plate, support and clamping cylinder after assembly in the present invention; Figure 4 for Figure 3 A magnified schematic diagram of the local structure at point A; Figure 5 for Figure 3 Schematic diagram of the position relationship of the first perspective; Figure 6 for Figure 5 A magnified schematic diagram of the local structure at point B in the middle; Figure 7 for Figure 3 Schematic diagram of the positional relationship of the second perspective; Figure 8 for Figure 3 Schematic diagram of the positional relationship of the third perspective; Figure 9 It is a structural diagram of a foot pedal in the prior art.

[0027] In the figure, the description of each figure mark is as follows: 1. Welding robot arm; 2. Turntable; 3. Adjusting cylinder; 4. Clamping cylinder; 5. Support; 6. Fixed base plate; 7. Driving motor; 8. Clamping rod; 9. Support column; 10. Clamping arm; 11. Flange positioning part; 12. Translation cylinder; 13. Cylinder bracket; 14. Cylinder seat; 15. Connecting block; 16. Clamping wedge; 17. Mounting arm; 18. Vertical plate; 19. Connecting arm; 20. Pressure roller; 21. Clamping cylinder; 22. Movable hinge seat; 23. Pressure roller mounting arm; 24. Straight groove; 25. Sliding pin; 26. Oblique groove; 100. Foot pedal; 101. Hollow groove; 102. Pedal; 103. Tip; 104. Contour frame; 105. Horizontal bracket; 106. Vertical bracket. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0029] See also Figures 1-9The present invention provides a technical solution: an automatic welding device for a pedal bracket of a new energy vehicle. The pedal 100 of a new energy vehicle generally includes a profile frame 104, a pedal 102, and a bracket, wherein the pedal 102 is fixedly connected to the hollow part of the profile frame 104, and the pedal 102 is provided with a hollow groove 101. The bracket includes a horizontal bracket 105 welded to the profile frame 104, and a vertical bracket 106 fixed to the end of the horizontal bracket 105 away from the profile frame 104. The automatic welding device includes a turntable 2 and a welding robot arm 1 installed on the outside of the turntable 2. Specifically, there is a bracket below the turntable 2, and the turntable 2 is rotatably connected to the top of the bracket. A drive motor 7 is installed on the bracket, and the motor shaft of the drive motor 7 is drive-connected to the turntable 2, so that the drive motor 7 can drive the turntable 2 to rotate. In addition, the speed and direction of the driving motor 7 are controlled by an external control cabinet controller, so that the control cabinet can make the turntable 2 rotate intermittently by controlling the speed and direction of the driving motor 7, and the angle of each rotation is consistent. A plurality of fixed base plates 6 are installed in an array along the axial direction of the top surface of the turntable 2. Two supports 5 are vertically fixed to one end of the fixed base plate 6 facing the inner side of the turntable 2. In addition, two cylinder brackets 13 are fixed to one end of the fixed base plate 6 adjacent to the outer side of the turntable 2. A translation cylinder 12 is horizontally installed on each cylinder bracket 13. The cylinder rod of the translation cylinder 12 is fixed to a cylinder seat 14. A clamping cylinder 21 is installed on the cylinder seat 14. The two cylinder rods of the clamping cylinder 21 are opposed to each other up and down, and each is fixed to a connecting arm 19, so that the two connecting arms 19 are also installed in an up and down opposite state. A positioning groove in the form of a notch is provided on one side of the support 5 facing the clamping cylinder 21. The width of the positioning groove is consistent with the width of the horizontal bracket 105 or the vertical bracket 106. When clamping, the worker places the horizontal bracket 105 and the vertical bracket 106 in the positioning groove. The side of the support 5 facing the outside of the fixed base plate 6 is vertically installed with a clamping cylinder 4 through the cylinder frame. The cylinder rod of the clamping cylinder 4 is driven and connected to the clamping arm 10. The end of the clamping arm 10 away from the clamping cylinder 4 is vertically fixed and passed through the clamping cylinder 4. A clamping rod 8 is provided, and a clamping wedge 16 is fixed to the lower end of the clamping rod 8. A clamping slope (not shown in the figure) is provided on the lower end of the outer wall of the clamping cylinder 21 on the side facing away from the clamping claw. The cylinder rod of the clamping cylinder 4 is extended and drives the clamping rod 8 to move downward, so that the clamping wedge 16 moves downward. When the clamping wedge 16 moves downward, the clamping slope contacts the wall of the longitudinal bracket 106 on the side facing the pedal 102, so that the longitudinal bracket 106 can be pressed against the inner wall of the positioning groove, and the clamping wedge 16 is pressed. After moving downward into position, the bottom of the compression wedge 16 presses against the cross bracket 105, so that the cross bracket 105 can be positioned and clamped in the positioning groove. In addition, a compression rod 8 can be provided with a threaded part passing through the compression arm 10, and is connected to the compression arm 10 through a plurality of nuts. By rotating the nuts, the length of the lower end of the compression rod 8 relative to the compression arm 10 can be adjusted. The fixed base plate 6 is vertically installed with a support column 9, and the upper end of the support column 9 is coaxially fixedly sleeved with a flange positioning portion 11. The flange positioning portion The large diameter end of the flange positioning portion 11 faces downward, and the diameter of the small diameter end of the flange positioning portion 11 matches the inner diameter of the hollow groove 101 on the pedal 102, so that after the flange positioning portion 11 is inserted into the hollow groove 101, it can limit the pedal 102. At the same time, the outer diameter of the large diameter end of the flange positioning portion 11 is larger than the inner diameter of the hollow groove 101, so that the large diameter end of the flange positioning portion 11 can limit the downward movement of the pedal 102, thereby enabling the flange positioning portion 11 to limit the pedal 102. The cylinder seat 14 is hingedly mounted with a movable hinge seat 22, and the movable hinge seat 22 is mounted with an adjusting cylinder 3, and the adjusting cylinder 3 is driven and connected with a connecting block 15. The end of the connecting block 15 facing away from the clamping cylinder 21 is fixedly connected with a mounting arm 17, and the end of the mounting arm 17 facing the support 5 is fixedly connected with a pressure roller mounting arm 23, and the pressure roller mounting arm 23 is horizontally rotatably connected with the pressure roller 20. The mounting arm 17 is connected to the surface of the connecting arm 19 in contact with the ground, and a sliding pin 25 is fixed to the wall of the mounting arm 17. The wall of the connecting arm 19 is fixed with two vertical plates 18. A sliding space is formed between the two vertical plates 18 for the installation arm 17 to pass freely, and a special-shaped groove is opened on the wall of the vertical plate 18 for the sliding pin 25 to be inserted. The special-shaped groove includes an oblique groove 26 and a straight groove 24 in the direction away from the regulating cylinder 3. The sliding pin 25 slides freely in the oblique groove 26 and the straight groove 24. The end of the oblique groove 26 away from the straight groove 24 in the length direction is inclined toward the outside direction of the thickness direction of the pedal 102, and the inclination angle is not greater than 5°. In addition, the length dimension of the straight groove 24 is greater than the diameter dimension of the sliding pin 25.

[0030] Working principle of the present invention: The worker first assembles the hollow groove 101 on the pedal 102 with the flange positioning part 11, so that the pedal 102 is positioned by the flange positioning part 11. The worker then snaps the horizontal bracket 105 and the vertical bracket 106 into the positioning groove. During the snapping process, the horizontal bracket 105 is first slightly tilted, and the arc-shaped notch of the horizontal bracket 105 is snapped into the tubular part of the profile frame 104. Then, the horizontal bracket 105 is rotated to make it horizontal, and finally the horizontal bracket 105 and the vertical bracket 106 are snapped into place. The pressing cylinder 4 is then started, and the cylinder rod of the pressing cylinder 4 is extended, and the pressing rod 8 is driven to move downward, so that the pressing wedge 16 moves downward. When the pressing wedge 16 moves downward, the pressing inclined surface abuts against the wall of the longitudinal bracket 106 facing the pedal 102, so that the longitudinal bracket 106 can be pressed against the inner wall of the positioning groove. After the pressing wedge 16 moves downward into position, the bottom of the pressing wedge 16 abuts against the transverse bracket 105, thereby enabling the transverse bracket 105 to be positioned and clamped in the positioning groove. Before welding, the cylinder rod of the translation cylinder 12 is shortened, so that the cylinder seat 14 moves toward the center side of the pedal 102, thereby causing the clamping cylinder 21 to move synchronously. After the movement is in place, the cylinder rod of the clamping cylinder 21 moves relatively close to each other, so that the two connecting arms 19 can be driven to move relatively close to each other, and the two pressure rollers 20 respectively press the upper and lower side walls of the cross bracket 105. At this time, the pressure roller 20 and the tip 103 have a certain horizontal distance. Then the adjustment cylinder 3 is started and the cylinder rod of the adjustment cylinder 3 is shortened. During the shortening process, the sliding pin 25 will first slide in the straight groove 24. During the sliding process, the pressure roller 20 has a large extrusion force on the surface of the cross bracket 105. Since the cross bracket 105 is usually made of aluminum alloy and is relatively thin, the pressure roller 20 can force the surface of the cross bracket 105 to be squeezed when squeezing the surface of the cross bracket 105. The straightening is carried out so that the surface of the cross bracket 105 does not bulge, and when the sliding pin 25 slides from the straight groove 24 into the inclined groove 26, the inclined groove 26 is inclined, so the sliding pin 25 will drive the pressure roller 20 to move slightly in the direction away from the cross bracket 105, so that the extrusion force of the pressure roller 20 on the surface of the cross bracket 105 is slightly reduced, thereby ensuring that when the pressure roller 20 squeezes the tip 103, it will not produce excessive extrusion force and cause damage to the tip 103. In addition, since the pressure roller 20 rolls toward the tip 103 and the extrusion force on the cross bracket 105 gradually decreases (with a small amplitude) during the rolling process, it can squeeze the arc notch on the cross bracket 105 to a certain extent, so that the arc notch is squeezed into a flat shape, thereby increasing the contact area between the inner wall of the arc notch and the wall surface of the tubular part of the profile frame 104, thereby improving the welding quality. After the extrusion and straightening are completed, the adjustment cylinder 3 is reset, so that the sliding pin 25 slides back into the straight groove 24, and then the two cylinder rods of the clamping cylinder 21 are reset, thereby driving the two connecting arms 19 to move away from each other, and then the cylinder seat 14 is driven in the opposite direction by the translation cylinder 12, so that the clamping cylinder 21 moves in the direction away from the pedal 102, and then the turntable 2 is rotated to rotate one of the foot pedals 100 that has passed the above processing to the bottom of the welding robot arm 1, and the welding robot arm 1 realizes the welding of the cross bracket 105 and the contour frame 104 to a predetermined degree set by the computer. After welding is completed, the turntable 2 rotates so that the welded foot pedal 100 rotates to the loading position, and the worker starts the clamping cylinder 4 again, and the clamping cylinder 4 drives the clamping rod 8 to move upward, so that the clamping wedge 16 is out of the clamping state of the cross bracket 105 and the longitudinal bracket 106, and then the worker removes the welded foot pedal 100 to complete one unloading.

[0031] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the invention, and the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. An automatic welding device for a pedal bracket of a new energy vehicle, comprising a turntable (2) and a welding robot arm (1) installed outside the turntable (2), characterized in that: Also includes: A plurality of fixed base plates (6) are provided and are mounted on the top of the turntable (2) in an array along the axial direction of the turntable (2); A bracket positioning assembly is provided on the fixed base plate (6); A clamping cylinder (21) is provided above the fixed base plate (6) and is driven to move horizontally by a translation assembly installed on the fixed base plate (6). The cylinder rod of the clamping cylinder (21) is driven and connected to two connecting arms (19) installed in an upper and lower opposed manner. The mounting arm (17) is connected to the connecting arm (19), and one end of the mounting arm (17) is fixedly connected to a pressure roller mounting arm (23). The pressure roller mounting arm (23) is horizontally rotatably connected to the pressure roller (20).

2. The automatic welding device for the pedal bracket of a new energy vehicle according to claim 1 is characterized in that: A driving motor (7) is installed at the bottom of the turntable (2), and the driving motor (7) is used to drive the turntable (2) to rotate.

3. The automatic welding device for the pedal bracket of a new energy vehicle according to claim 1 is characterized in that: The bracket positioning assembly includes a support (5) fixed to the fixed base plate (6), a positioning groove in the form of a notch is provided on the side of the support (5) facing the clamping cylinder (21), a bracket pressing unit is installed on the support (5), and the fixed base plate (6) is vertically connected to the pedal positioning unit.

4. The automatic welding device for the pedal bracket of a new energy vehicle according to claim 3 is characterized in that: The bracket clamping unit includes a clamping cylinder (4) vertically mounted on one side of the support (5), the cylinder rod of the clamping cylinder (4) is driven and connected to a clamping arm (10), and a clamping rod (8) is vertically and fixedly passed through one end of the clamping arm (10) away from the clamping cylinder (4), and a clamping wedge (16) is fixedly connected to the lower end of the clamping rod (8), and a clamping inclined surface is provided on the lower end of the outer wall of the clamping wedge (16) on the side facing away from the clamping cylinder (21).

5. The automatic welding device for the pedal bracket of a new energy vehicle according to claim 4 is characterized in that: The pressing rod (8) is threadedly inserted into the pressing arm (10) and is positionally connected to the pressing arm (10) via a plurality of nuts.

6. The automatic welding device for the pedal bracket of a new energy vehicle according to claim 3 is characterized in that: The pedal positioning unit comprises a support column (9) vertically mounted on a fixed base plate (6); a flange positioning portion (11) is coaxially and fixedly sleeved on the upper end of the support column (9); and the large diameter end of the flange positioning portion (11) faces downward.

7. The automatic welding device for the pedal bracket of a new energy vehicle according to claim 1 is characterized in that: The translation assembly includes a cylinder bracket (13) mounted on the top of a fixed base plate (6), a translation cylinder (12) is horizontally mounted on the upper end of the cylinder bracket (13), the translation cylinder (12) is driven and connected to a cylinder seat (14), and the clamping cylinder (21) is mounted on the cylinder seat (14).

8. The automatic welding device for the pedal bracket of a new energy vehicle according to claim 7 is characterized in that: The cylinder seat (14) is hingedly mounted with a movable hinge seat (22), and the movable hinge seat (22) is mounted with an adjusting cylinder (3). The adjusting cylinder (3) is driven and connected with a connecting block (15). The mounting arm (17) is fixed to one end of the connecting block (15) facing away from the clamping cylinder (21). The connecting arm (19) is provided with an adjusting unit, and the adjusting unit is used to drive the pressure roller (20) to move slightly upward when the mounting arm (17) moves toward the adjusting cylinder (3).

9. The automatic welding device for the pedal bracket of a new energy vehicle according to claim 8, characterized in that: The adjustment unit includes a sliding pin (25) fixed to the mounting arm (17); two vertical plates (18) are fixed to the wall of the connecting arm (19); a sliding space for the mounting arm (17) to pass freely is formed between the two vertical plates (18); and a special-shaped groove for the sliding pin (25) to be inserted is provided on the wall of the vertical plate (18); the special-shaped groove includes an oblique groove (26) and a straight groove (24) in sequence in a direction away from the adjustment cylinder (3); and the sliding pin (25) slides freely in the oblique groove (26) and the straight groove (24).

10. The automatic welding device for the pedal bracket of a new energy vehicle according to claim 9 is characterized in that: The length of the straight groove (24) is greater than the diameter of the sliding pin (25).

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