New energy vehicle pedal bracket automatic welding device

Abstract

This invention discloses an automatic welding device for foot pedal brackets of new energy vehicles, belonging to the field of welding equipment technology. It includes a turntable, a welding robotic arm, a fixed base plate, a bracket positioning assembly, a gripper cylinder, a translation assembly, and a connecting arm; an mounting arm with a pressure roller mounting arm fixedly connected to one end, the pressure roller mounting arm being horizontally rotatably connected to a pressure roller. In this invention, the two mounting arms and the pressure roller move relatively close together, allowing the pressure roller to press down on the upper and lower tips of the arc-shaped notch of the bracket and forcibly straighten the tips, making the tips fit against the tubular part of the contour frame. Thus, during welding, after the tips melt, they can be fixed at the connection between the horizontal bracket and the tubular part of the contour frame, preventing gaps between the horizontal bracket and the tubular part of the contour frame. This avoids gaps or defects at the contact point between the contour frame and the horizontal bracket after welding, which would affect welding accuracy. It also reduces welding stress to some extent. Furthermore, by straightening the tips, interference with the welding robotic arm during welding is avoided.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, specifically to an automatic welding device for foot pedal brackets in new energy vehicles. Background Technology

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

[0003] Some new energy vehicle models, such as SUVs, are equipped with foot pedals, such as... Figure 9 As shown, the existing foot pedal 100 typically includes a profile frame 104, a pedal 102, and a bracket. The pedal 102 is fixedly connected to the hollow portion of the profile frame 104, and the pedal 102 has a hollow slot 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 horizontal bracket 105 is generally connected to the profile frame 104 by welding. During welding, it is usually necessary to... An arc-shaped notch is cut at the welding end of 105. The inner diameter of this arc-shaped notch is larger than the outer diameter of the tubular part of the welding end of the profile frame 104. This allows the tubular part of the welding end of the profile frame 104 to fit into the arc-shaped notch, thus positioning the profile frame 104 and the transverse support 105. Then, the arc-shaped notch is welded to allow the profile frame 104 to be welded together with the transverse support 105. However, because the upper and lower sides of the arc-shaped notch (such as...) are cut into the transverse support 15 after the arc-shaped notch is cut, the... Figure 9 As shown, the tip 103 is relatively sharp and thin. 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 will generally be a gap between the tip 103 on the upper and lower sides of the arc-shaped notch and the wall of the tubular part of the profile frame 104. During welding, since the tip 103 is thin, it is easily melted by welding. The molten metal may not enter the contact point between the profile frame 104 and the cross bracket 15. This may cause the tip 103 to have a gap or partial loss at the position of the profile frame 104 corresponding to the tip 103 after welding, resulting in an unreliable weld and making it difficult to reduce welding stress. In addition, if the tip 103 is curled outward towards the cross bracket 105 before welding, it will also affect or interfere with the welding operation. Summary of the Invention

[0004] The purpose of this invention is to provide an automatic welding device for foot pedal brackets of new energy vehicles to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] An automatic welding device for foot pedal brackets of new energy vehicles includes a turntable and a welding robotic arm mounted on the outside of the turntable, and further includes:

[0007] A fixed base plate is provided, and multiple plates are arranged in an array along the axial direction of the turntable and mounted on the top of the turntable;

[0008] A bracket positioning assembly is provided on the fixed base plate;

[0009] A gripper cylinder is located above the fixed base plate and is driven to move horizontally by a translation component installed on the fixed base plate. The cylinder rod of the gripper cylinder is connected to two connecting arms that are installed vertically opposite each other.

[0010] An mounting arm is connected to the connecting arm, and a pressure roller mounting arm is fixedly connected to one end. The pressure roller mounting arm is horizontally rotatably connected to the pressure roller.

[0011] Through the above technical solution, the bracket positioning assembly positions the pedal and the bracket, and simultaneously engages the arc-shaped notch of the bracket with the tubular part of the pedal's profile frame. Before welding, the two cylinder rods of the gripper cylinder move closer to each other, causing the two connecting arms to move closer together, which in turn drives the two mounting arms and pressure rollers to move closer to each other. This allows the pressure rollers to press down on the upper and lower tips of the arc-shaped notch of the bracket and forcefully straighten the tips, making them fit against the tubular part of the profile frame. In this way, after the tips melt during welding, they can be fixed at the connection between the horizontal bracket and the tubular part of the profile frame, preventing gaps or missing parts between the horizontal bracket and the tubular part of the profile frame. This avoids gaps or missing parts at the contact point between the profile frame and the horizontal bracket after welding, which would affect the welding accuracy. It also reduces welding stress to a certain extent. In addition, by straightening the tips, interference with the welding robot arm during welding is avoided.

[0012] Furthermore, a drive motor is installed at the bottom of the turntable, and the drive motor is used to drive the turntable to rotate.

[0013] Through the above technical solution, the turntable is driven by the drive motor 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.

[0014] Furthermore, the bracket positioning assembly includes a support fixed to the fixed base plate, the support having a notch-shaped positioning groove on the side facing the gripper cylinder, the support being equipped with a bracket clamping unit, and the fixed base plate being vertically connected to a pedal positioning unit.

[0015] Through the above technical solution, the longitudinal bracket and transverse bracket of the bracket are engaged in the positioning groove, and then the transverse bracket is pressed by the bracket pressing 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.

[0016] 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 to connect to a clamping arm. A clamping rod is vertically fixedly inserted at the end of the clamping arm away from the clamping cylinder. A clamping wedge is fixedly connected to the lower end of the clamping rod. A clamping inclined surface is formed at the lower end of the clamping wedge on the outer wall of the side facing away from the clamping cylinder.

[0017] Through the above technical solution, the cylinder rod of the clamping cylinder extends and drives the clamping rod to move downward, causing the clamping wedge to move downward. When the clamping wedge moves downward, the clamping 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 clamping wedge moves downward into place, the bottom of the clamping wedge abuts against the transverse bracket, thereby enabling the transverse bracket to be positioned and clamped in the positioning groove.

[0018] Furthermore, the clamping rod is threaded through the clamping arm and is connected to the clamping arm by a plurality of nuts for limiting.

[0019] With 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.

[0020] Furthermore, the pedal positioning unit includes a support column vertically mounted on a fixed base plate, and a flange positioning part is coaxially and fixedly sleeved on the upper end of the support column, with the large diameter end of the flange positioning part facing downward.

[0021] Through the above technical solution, the small diameter end of the flange positioning part matches the inner diameter of the hollow groove on the pedal, so that after the flange positioning part is inserted into the hollow groove, it can limit the pedal. At the same time, the outer diameter end of the flange positioning part is larger than the inner diameter of the hollow groove, so that the large diameter end of the flange positioning part can limit the downward movement of the pedal, thus enabling the flange positioning part to limit the pedal.

[0022] Furthermore, the translation component includes a cylinder bracket mounted on the top of the fixed base plate, a translation cylinder horizontally mounted on the upper end of the cylinder bracket, a cylinder seat driven by the translation cylinder, and a gripper cylinder mounted on the cylinder seat.

[0023] Through the above technical solution, the cylinder seat is moved by the translation cylinder, so that the gripper cylinder can move along the length of the contour frame. After the tip is straightened, the gripper cylinder can be driven by the translation cylinder to move away from the contour frame, thus avoiding interference with the welding operation of the welding robot arm.

[0024] Furthermore, the cylinder seat is hinged to a movable hinge seat, the movable hinge seat is fitted with an adjusting cylinder, the adjusting cylinder is driven to connect a connecting block, the mounting arm is fixed to the end of the connecting block facing away from the gripper cylinder, the connecting arm is provided with an adjusting unit, the adjusting unit is used to drive the pressure roller to move upward slightly when the mounting arm moves in the direction of the adjusting cylinder.

[0025] Through the above technical solution, the cylinder rod of the adjusting cylinder is shortened, which enables the adjusting unit to be triggered. As the pressure roller moves toward the adjusting cylinder, the clamping force of the pressure roller on the cross bracket gradually decreases. That is, when the pressure roller clamps the part of the cross bracket away from the tip, the clamping force is greater, while when clamping the tip, the clamping force is slightly reduced. This can both clamp and straighten the cross bracket and avoid excessive clamping force that could damage the tip.

[0026] Furthermore, the adjustment unit includes a sliding pin fixed to the mounting arm, and two upright plates are fixed to the wall of the connecting arm. The two upright plates form a sliding space for the mounting arm to pass through freely. The wall of the upright plate is provided with an irregular groove for the sliding pin to be inserted. The irregular groove includes an inclined groove and a straight groove in sequence in the direction away from the adjustment cylinder. The sliding pin slides freely in the inclined groove and the straight groove.

[0027] With the above technical solution, when the sliding pin slides in the straight groove, the pressure roller exerts a large clamping force on the transverse 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.

[0028] Furthermore, the length of the straight groove is greater than the diameter of the sliding pin.

[0029] With the above technical solution, when the two cylinder rods of the gripper cylinder move away from each other, the mounting arm is driven to move away from the pedal. Since the adjusting cylinder is essentially hinged to the cylinder seat, the adjusting cylinder will swing, causing the sliding pin to slide in the straight groove. Because the length of the straight groove is greater than the diameter of the sliding pin, the sliding pin has sufficient room to move in the straight groove, which allows the adjusting cylinder to swing, thereby allowing the two mounting arms to move away from each other, and thus allowing the gripper cylinder to move away from the pedal.

[0030] Compared with the prior art, the beneficial effects of the present invention are:

[0031] 1. In this invention, the bracket positioning assembly positions the pedal and the bracket, and simultaneously engages the arc-shaped notch of the bracket with the tubular part of the contour frame of the pedal. Before welding, the two cylinder rods of the gripper cylinder move closer to each other, causing the two connecting arms to move closer to each other, thereby driving the two mounting arms and the pressure roller to move closer to each other. This allows the pressure roller to press the tips on the upper and lower sides of the arc-shaped notch of the bracket and force the tips to be straightened, so that the tips fit the tubular part of the contour frame. In this way, when welding, after the tips are melted, they can be fixed at the connection between the horizontal bracket and the tubular part of the contour frame, preventing gaps from forming between the horizontal bracket and the tubular part of the contour frame. This avoids gaps or missing parts at the contact point between the contour frame and the horizontal bracket after welding, which would affect the welding accuracy. It 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.

[0032] 2. In this 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 place, 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.

[0033] 3. In this invention, the cylinder rod of the adjusting cylinder is shortened, which enables the adjusting unit to be triggered. As the pressure roller moves toward the adjusting cylinder, the clamping force of the pressure roller on the cross bracket gradually decreases. That is, when the pressure roller clamps the part of the cross bracket away from the tip, the clamping force is greater, while when clamping the tip, the clamping force is slightly reduced. This can both clamp and straighten the cross bracket and avoid excessive clamping force that could damage the tip. Attached Figure Description

[0034] Figure 1 This is a schematic diagram of the overall structure of an automatic welding device for a foot pedal bracket of a new energy vehicle according to the present invention.

[0035] Figure 2 for Figure 1 A diagram illustrating the positional relationship from another perspective;

[0036] Figure 3 This is a schematic diagram showing the positional relationship of the fixed base plate, support, and gripper cylinder after assembly in this invention.

[0037] Figure 4 for Figure 3 Enlarged schematic diagram of the local structure at point A;

[0038] Figure 5 for Figure 3 A diagram illustrating the positional relationships from a first-person perspective.

[0039] Figure 6 for Figure 5 Enlarged schematic diagram of the local structure at point B;

[0040] Figure 7 for Figure 3 A diagram illustrating the positional relationships from a second-person perspective;

[0041] Figure 8 for Figure 3 A diagram illustrating the positional relationships from a third-person perspective;

[0042] Figure 9 This is a schematic diagram of the structure of a foot pedal in the prior art.

[0043] The following are explanations of the reference numerals in the figures: 1. Welding robotic arm; 2. Turntable; 3. Adjusting cylinder; 4. Clamping cylinder; 5. Support; 6. Fixed base plate; 7. Drive 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 block; 17. Mounting arm; 18. Vertical plate; 19. Connecting arm; 20. Pressure roller; 21. Grip cylinder; 22. Movable hinge seat; 23. Pressure roller mounting arm; 24. Straight groove; 25. Sliding pin; 26. Inclined groove; 100. Foot pedal; 101. Hollowed-out groove; 102. Pedal; 103. Tip; 104. Contour frame; 105. Horizontal support; 106. Vertical support. Detailed Implementation

[0044] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0045] Please see Figures 1-9This invention provides a technical solution: an automatic welding device for a foot pedal bracket in a new energy vehicle. The foot pedal 100 of a new energy vehicle typically includes a profile frame 104, a pedal 102, and a bracket. The pedal 102 is fixedly connected to a hollowed-out portion of the profile frame 104, and the pedal 102 has a hollowed-out groove 101. The bracket includes a horizontal bracket 105 welded to the profile frame 104 and a vertical bracket 106 fixed to one end of the horizontal bracket 105 away from the profile frame 104. The automatic welding device includes a turntable 2 and a welding robotic arm 1 mounted on the outside of the turntable 2. Specifically, a support is located below the turntable 2, and the turntable 2 is rotatably connected to the top of the support. A drive motor 7 is mounted on the support, and the motor shaft of the drive motor 7 is drivenly connected to the turntable 2, thus enabling the drive motor 7 to drive the turntable 2 to rotate. In addition, the speed and direction of the drive motor 7 are controlled by an external control cabinet. This allows the control cabinet to control the speed and direction of the drive motor 7, thereby enabling the turntable 2 to rotate intermittently, with each rotation angle being consistent. Multiple fixed base plates 6 are arrayed along the axial direction on the top surface of the turntable 2. Two supports 5 are vertically fixed to one end of the fixed base plate 6 facing the inside of the turntable 2. Two cylinder brackets 13 are fixedly installed on the other end of the fixed base plate 6 near the outside of the turntable 2. Each cylinder bracket 13 is horizontally mounted with a translation cylinder 12. The cylinder rod of the translation cylinder 12 is fixedly connected to a cylinder seat 14. A gripper cylinder 21 is mounted on the cylinder seat 14. The two cylinder rods of the gripper cylinder 21 are positioned vertically opposite each other and each is fixedly connected to a connecting arm 19, so that the two connecting arms 19 are also installed in a vertically opposite position.

[0046] The support 5 has a notch-shaped positioning groove on the side facing the gripper cylinder 21. The width of the positioning groove is the same as the width of the horizontal support 105 or the vertical support 106. During clamping, the worker clamps the horizontal support 105 and the vertical support 106 into the positioning groove. The side of the support 5 facing the outside of the fixed base plate 6 is vertically mounted with a clamping cylinder 4 via a cylinder frame. The cylinder rod of the clamping cylinder 4 is driven by a clamping arm 10. The end of the clamping arm 10 away from the clamping cylinder 4 is vertically fixed through... A clamping rod 8 is provided, and a clamping wedge 16 is fixedly connected to the lower end of the clamping rod 8. The lower end of the clamping wedge 16, which faces away from the outer wall of the gripper cylinder 21, has a clamping slope (not shown in the figure). The cylinder rod of the clamping cylinder 4 extends and drives the clamping rod 8 to move downward, causing the clamping wedge 16 to move downward. When the clamping wedge 16 moves downward, the clamping slope 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 moving downwards into position, the bottom of the clamping wedge 16 presses against the horizontal bracket 105, thereby allowing the horizontal bracket 105 to be positioned and clamped in the positioning groove. Furthermore, a clamping rod 8 can be threaded through the clamping arm 10 and connected to the clamping arm 10 by multiple nuts. By rotating the nuts, the length of the lower end of the clamping rod 8 relative to the clamping arm 10 can be adjusted. A support column 9 is vertically mounted on the fixed base plate 6, and a flange positioning part 11 is coaxially and fixedly sleeved on the upper end of the support column 9. With the large diameter end of flange positioning part 11 facing downwards, the small diameter end of flange positioning part 11 matches the inner diameter of the slot 101 on pedal 102, so that after flange positioning part 11 passes through slot 101, it can limit pedal 102. At the same time, the outer diameter of the large diameter end of flange positioning part 11 is larger than the inner diameter of slot 101, so that the large diameter end of flange positioning part 11 can limit the downward movement of pedal 102, thus allowing flange positioning part 11 to limit pedal 102.

[0047] A movable hinge seat 22 is hinged to the cylinder seat 14. An adjusting cylinder 3 is mounted on the movable hinge seat 22. The adjusting cylinder 3 drives a connecting block 15. A mounting arm 17 is fixedly connected to the end of the connecting block 15 facing away from the gripper cylinder 21. A pressure roller mounting arm 23 is fixedly connected to the end of the mounting arm 17 facing the support 5. The pressure roller mounting arm 23 is horizontally rotatably connected to a pressure roller 20. The mounting arm 17 is ground-contactingly connected to the surface of the connecting arm 19. A sliding pin 25 is fixedly connected to the wall of the mounting arm 17. Two vertical plates 18 are fixedly connected to the wall of the connecting arm 19. The two upright plates 18 form a sliding space for the mounting arm 17 to pass through freely. The wall of the upright plate 18 is provided with an irregular groove for the sliding pin 25 to be inserted. The irregular groove includes an inclined groove 26 and a straight groove 24 in sequence in the direction away from the adjusting cylinder 3. The sliding pin 25 slides freely in the inclined groove 26 and the straight groove 24. The end of the inclined groove 26 away from the straight groove 24 in the length direction is inclined outward in the thickness direction of the pedal 102, and the angle of inclination 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.

[0048] Working principle of the invention:

[0049] The worker first assembles the perforated 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 engages the horizontal bracket 105 and the vertical bracket 106 in the positioning groove. During the engagement process, the horizontal bracket 105 is first slightly tilted, and the arc-shaped notch of the horizontal bracket 105 is engaged with the tubular part of the profile frame 104. Then the horizontal bracket 105 is rotated to make the horizontal bracket 105 horizontal, and finally the horizontal bracket 105 and the vertical bracket 106 are engaged. Place the clamping block 16 in the positioning groove, then start the clamping cylinder 4. The cylinder rod of the clamping cylinder 4 extends 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 inclined surface abuts against the wall of the longitudinal bracket 106 facing the pedal 102, so that the longitudinal bracket 106 can be clamped on the inner wall of the positioning groove. After the clamping wedge 16 moves downward into place, the bottom of the clamping wedge 16 abuts against the transverse bracket 105, so that the transverse bracket 105 can be positioned and clamped in the positioning groove.

[0050] Before welding, the cylinder rod of the translation cylinder 12 is shortened, causing the cylinder seat 14 to move towards the center of the pedal 102, thereby causing the gripper cylinder 21 to move synchronously. After the movement is completed, the cylinder rods of the gripper cylinder 21 move closer together, which drives the two connecting arms 19 to move closer together, and causes the two pressure rollers 20 to press against the upper and lower side walls of the transverse bracket 105 respectively. At this time, the pressure rollers 20 and the tip 103 have a certain lateral distance. Then, the adjusting cylinder 3 is started, and the cylinder rod of the adjusting 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 rollers 20 exert a large extrusion force on the surface of the transverse bracket 105. Since the transverse bracket 105 is usually made of aluminum alloy and is relatively thin, the pressure rollers 20 can force the surface of the transverse bracket 105 to be pressed when they press it. The straightening process prevents bulges on the surface of the horizontal support 105. When the sliding pin 25 slides from the straight groove 24 into the inclined groove 26, the inclined groove 26 is inclined. Therefore, the sliding pin 25 will drive the pressure roller 20 to move slightly away from the horizontal support 105. This slightly reduces the pressure of the pressure roller 20 on the surface of the horizontal support 105, so that when the pressure roller 20 presses the tip 103, it will not produce excessive pressure that could damage the tip 103. In addition, since the pressure roller 20 rolls towards the tip 103 and the pressure on the horizontal support 105 gradually decreases (by a small margin) during the rolling process, it can press the arc-shaped notch on the horizontal support 105 to a certain extent, making the arc-shaped notch flat. This increases the contact area between the inner wall of the arc-shaped notch and the wall of the tubular part of the profile frame 104, thereby improving the welding quality.

[0051] After the extrusion and straightening are completed, the adjusting cylinder 3 is reset, so that the sliding pin 25 slides back into the straight groove 24. Then, the two cylinder rods of the gripper cylinder 21 are reset, which in turn drives the two connecting arms 19 to move away from each other. Then, the translation cylinder 12 drives the cylinder seat 14 to move in the opposite direction, so that the gripper cylinder 21 moves away from the pedal 102. Then, the turntable 2 rotates, and one of the foot pedals 100 that has passed the above treatment is rotated to the bottom of the welding robot arm 1. The welding robot arm 1 performs welding on the horizontal bracket 105 and the contour frame 104 according to the predetermined degree set by the computer. After the welding is completed, the turntable 2 rotates, so that the welded foot pedal 100 is rotated to the loading position. The worker then starts the clamping cylinder 4, which drives the clamping rod 8 to move upward, so that the clamping wedge 16 is released from the clamping state on the horizontal bracket 105 and the longitudinal bracket 106. Then the worker removes the welded foot pedal 100, completing one unloading.

[0052] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An automatic welding device for foot pedal brackets of new energy vehicles, comprising a turntable (2) and a welding robotic arm (1) mounted on the outside of the turntable (2), characterized in that, Also includes: A fixed base plate (6) is provided, and multiple plates are arranged in an array along the axial direction of the turntable (2) on the top of the turntable (2); A bracket positioning assembly is provided on the fixed base plate (6). The gripper cylinder (21) is located above the fixed base plate (6) and is driven to move horizontally by the translation component installed on the fixed base plate (6). The cylinder rod of the gripper cylinder (21) is connected to two connecting arms (19) that are installed vertically opposite each other. The mounting arm (17) is connected to the connecting arm (19), and one end is fixedly connected to the pressure roller mounting arm (23). The pressure roller mounting arm (23) is horizontally rotatably connected to the pressure roller (20). The two cylinder rods of the gripper cylinder (21) move closer to each other, causing the two connecting arms (19) to move closer to each other, thereby driving the two mounting arms (17) and the pressure roller (20) to move closer to each other, so that the pressure roller (20) can press the tip of the arc-shaped notch on the upper and lower sides of the bracket and force the tip to straighten, so that the tip fits the tubular part of the profile frame.

2. The automatic welding device for foot pedal brackets of new energy vehicles according to claim 1, characterized in that, The bottom of the turntable (2) is equipped with a drive motor (7), which is used to drive the turntable (2) to rotate.

3. The automatic welding device for foot pedal brackets of new energy vehicles according to claim 1, characterized in that, The bracket positioning assembly includes a support (5) fixed to the fixed base plate (6). The support (5) has a notch-shaped positioning groove on the side facing the gripper cylinder (21). The support (5) is equipped with a bracket clamping unit. The fixed base plate (6) is vertically connected to a pedal positioning unit.

4. The automatic welding device for the foot pedal bracket of a new energy vehicle according to claim 3, characterized in that, The bracket clamping unit includes a clamping cylinder (4) vertically installed on one side of the support (5). The cylinder rod of the clamping cylinder (4) is driven to connect to a clamping arm (10). A clamping rod (8) is vertically fixedly inserted at one end of the clamping arm (10) away from the clamping cylinder (4). A clamping wedge (16) is fixedly connected to the lower end of the clamping rod (8). A clamping slope is opened at the lower end of the clamping wedge (16) on the side of the outer wall opposite to the gripper cylinder (21).

5. The automatic welding device for foot pedal brackets of new energy vehicles according to claim 4, characterized in that, The clamping rod (8) is threaded through the clamping arm (10) and is connected to the clamping arm (10) by a plurality of nuts.

6. The automatic welding device for foot pedal brackets of new energy vehicles according to claim 3, characterized in that, The pedal positioning unit includes a support column (9) vertically installed on a fixed base plate (6). A flange positioning part (11) is coaxially and fixedly sleeved on the upper end of the support column (9), with the large diameter end of the flange positioning part (11) facing downward.

7. The automatic welding device for foot pedal brackets of new energy vehicles according to claim 1, characterized in that, The translation component includes a cylinder bracket (13) mounted on the top of a fixed base plate (6), a translation cylinder (12) horizontally mounted on the upper end of the cylinder bracket (13), a cylinder seat (14) driven by the translation cylinder (12), and a gripper cylinder (21) mounted on the cylinder seat (14).

8. The automatic welding device for foot pedal brackets of new energy vehicles according to claim 7, characterized in that, The cylinder seat (14) is hinged to a movable hinge seat (22), and the movable hinge seat (22) is fitted with an adjusting cylinder (3). The adjusting cylinder (3) drives a connecting block (15). The mounting arm (17) is fixed to one end of the connecting block (15) opposite to the gripper cylinder (21). The connecting arm (19) is provided with an adjusting unit. 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 foot pedal brackets of new energy vehicles according to claim 8, characterized in that, The adjustment unit includes a sliding pin (25) fixed to the mounting arm (17). Two upright plates (18) are fixed to the wall of the connecting arm (19). The two upright plates (18) form a sliding space for the mounting arm (17) to pass through freely. The wall of the upright plate (18) is provided with a special-shaped groove for the sliding pin (25) to be inserted. The special-shaped groove includes an inclined groove (26) and a straight groove (24) in sequence in the direction away from the adjustment cylinder (3). The sliding pin (25) slides freely in the inclined groove (26) and the straight groove (24).

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

Images