Welding device for charging pile production

Abstract

The welding device comprises a base, a roller lifting platform is arranged in the middle of the upper end of the base, and a welding mechanism is further arranged at the position, corresponding to the roller lifting platform, of the middle of the upper end of the base. A positioning and clamping mechanism is further arranged at the position, corresponding to the roller lifting platform, of the middle of the upper end of the base. According to the welding device for charging pile production, in the descending process of the roller platform, the supporting rods can penetrate through gaps in the outer sides of the corresponding rollers, and a case shell on the upper surfaces of the rollers of the roller platform is suspended and erected; a plurality of automatic welding guns and a sliding block assembly can be driven by a transmission belt in the welding mechanism to move around the bottom edge of the outer side of the case shell, the requirement for 135-degree overhead welding on the periphery of the bottom edge of the case shell is met while automatic welding is conducted, welding is conducted at the most appropriate angle, the strength and compactness of a welding seam are improved, and the welding quality is improved. And the welding quality is improved.

Description

Technical Field

[0001] The present invention relates to the field of welding technology, and in particular to a welding device for producing charging piles. Background Art

[0002] A charging pile refers to a charging device that provides energy replenishment for electric vehicles. Its function is similar to that of a gas pump in a gas station. It can be fixed on the ground or on the wall and installed in public buildings (public buildings, shopping malls, public parking lots, etc.) and residential parking lots or charging stations. It can charge various models of electric vehicles according to different voltage levels. The box structure of the charging pile needs to be welded when it is spliced, and the corresponding welding equipment needs to be used during welding.

[0003] Chinese patent document CN116532858B discloses an automatic welding device for distribution box production, which relates to the field of distribution box processing, and includes a base, a bracket and a welding gun, wherein the bracket is installed on the top of the base, and the welding gun is arranged on the inner side of the bracket. It also includes a first adjustment mechanism, which includes a round table and a groove wheel mechanism for driving the round table to rotate in sections; a positioning mechanism, which is arranged above the round table and is used to fix the distribution box; a lifting mechanism, which is connected to the round table and is used to drive the round table to rise and fall; a second adjustment mechanism, which is connected to the welding gun and is used to drive the welding gun to move up and down; a driving mechanism, which is installed inside the base and is used to drive the groove wheel mechanism, the lifting mechanism and the second adjustment mechanism to operate respectively; the automatic welding device for distribution box production realizes automatic fixation of distribution box components, and can automatically calibrate the distribution box components, avoiding the problem of unstable welding of distribution box components and ensuring the flatness of distribution box welding.

[0004] However, in actual use, since the angle between the sheet metal on the bottom surface of the box shell and the surrounding sheet metal is 270°, if two pieces of sheet metal with a 270° angle are to be welded together, it is best to use an overhead welding angle of 135° (overhead welding 135° means tilting the welding gun or welding head 45° upward and welding at an angle of 135° to the horizontal plane). The welding device in the comparative document blocks the 135° overhead welding position on all four sides of the bottom surface because the box is placed on a rotating seat for welding. The choice of welding angle has a great influence on the shape and quality of the weld. If the selected angle is not appropriate, the weld may not be fully covered, resulting in a decrease in the strength and density of the weld. Therefore, using this method to weld the box of the charging pile will lead to a decrease in the strength of the weld joint, and it is easy to have problems such as weld cracks or brittle fractures, affecting the quality of the finished product.

[0005] Therefore, in view of the above problems, it is necessary to provide a welding device for charging pile production. Summary of the Invention

[0006] The main purpose of the present invention is to provide a welding device for charging pile production, which can effectively solve the problem that the existing welding device cannot perform 135° overhead welding on the four sides of the bottom edge of the box.

[0007] To achieve the above object, the technical solution adopted by the present invention is:

[0008] A welding device for producing charging piles, comprising a base, a feed conveyor provided at the front upper end of the base, a discharge conveyor provided at the rear upper end of the base, a plurality of chassis shells provided at the upper ends of the feed conveyor and the discharge conveyor, a roller lifting platform provided at the middle upper end of the base, a welding mechanism provided at a position corresponding to the roller lifting platform at the middle upper end of the base, a positioning and clamping mechanism provided at a position corresponding to the roller lifting platform at the middle upper end of the base, the positioning and clamping mechanism consisting of two mutually symmetrical positioning and clamping assemblies;

[0009] The positioning and clamping assembly includes two rectangular plates arranged front to back and two L-shaped frames arranged front to back. The two L-shaped frames are located between the two rectangular plates. An outer positioning assembly is provided between the two rectangular plates. An inner positioning assembly is provided between the two L-shaped frames. A rotating shaft is also installed between the two rectangular plates. A rectangular opening is provided on the upper end of the two rectangular plates close to the roller lifting platform.

[0010] Preferably, the roller lifting platform consists of a base, a scissor lift, and a roller platform installed in sequence from bottom to top, two racks arranged front to back are fixedly installed on both ends of the left and right sides of the roller platform, and two support rods arranged front to back are also fixedly connected to the middle part of the upper end of the base, and the positions of the two support rods correspond to the gaps between the outer surfaces of the two rollers on the front and rear sides of the roller platform.

[0011] Preferably, the welding mechanism includes a rectangular annular track and four pulleys three, the annular track is fixedly mounted on the upper inner surface of four rectangular openings, the four pulleys three correspond to the four corners of the inner surface of the annular track respectively, the upper end of the base is fixedly mounted with a driving motor, the output end of the driving motor is fixedly connected to one of the pulleys three, the lower ends of the other three pulleys three are rotatably connected to a positioning rod, the lower end of the positioning rod is fixedly connected to the base, a transmission belt is commonly wound between the outer surfaces of the four pulleys three, a plurality of slider assemblies are commonly provided between the transmission belt and the annular track, and an automatic welding gun is provided at the upper end of the slider assembly.

[0012] Preferably, the outer positioning assembly includes two rotating rods 1 fixedly mounted on the front and rear sides of the outer surface of the rotating shaft, a rotating block 1 is provided at the end of the two rotating rods 1 away from the rotating shaft, and a rotating block 2 is rotatably mounted on the upper part of the end of the two rectangular plates close to each other, and a sliding rod is provided between the rotating block 1 and the rotating block 2 located on the same side, and a soft rubber pad 1 is fixedly connected to the end of the outer surface of the rotating block 1 away from the sliding rod.

[0013] Preferably, the sliding rod is fixedly connected to the rotating block 1, and the outer surface of the sliding rod at a side away from the rotating block 1 is slidably connected to the rotating block 2.

[0014] Preferably, gears are rotatably installed on one side of the roller lifting platform at one end of the two rectangular plates that are close to each other, and the two gears are connected to the rotating shaft through belts. The positions of the two gears correspond to the two racks on the same side of the left and right sides, and the gears are adapted to the racks.

[0015] Preferably, the inner positioning assembly includes a rotating rod 2 and a rotating rod 3 rotatably mounted between the horizontal parts of the two L-shaped frames, the rotating rod 3 is located on the front side of the rotating rod 2, and a T-shaped rod is rotatably mounted on the end of the outer surface of the rotating rod 2 away from the L-shaped frame, and a rotating rod 4 is rotatably mounted on the end of the rotating rod 3 away from the L-shaped frame, and a bending rod is rotatably mounted on the end of the rotating rod 4 away from the rotating rod 3, and a soft rubber pad 2 is fixedly connected to the end of the bending rod away from the rotating rod 4, and the other two branches of the T-shaped rod are rotatably connected to the middle of the outer surfaces of the rotating rod 3 and the bending rod respectively.

[0016] Preferably, the ends of the horizontal parts of the two L-shaped frames away from each other are rotatably mounted with pulleys 2, and the two pulleys 2 are coaxial with the side of the rotating rod 3 close to the L-shaped frame. The outer surface of the rotating shaft corresponding to the positions of the two pulleys 2 are fixedly connected with pulleys 1, and the pulleys 1 and 2 on the same side are connected by a belt, and the diameter of the pulley 2 is smaller than the diameter of the pulley 1.

[0017] Preferably, when the roller lifting platform is working, the two support rods will lift the corresponding chassis shell during the downward movement of the roller platform, and the automatic welding gun is in a retracted state at this time.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In this welding device, when the roller platform descends, the support rod will pass through the gap on the outside of the corresponding roller, suspending the chassis shell on the upper surface of the roller platform. The transmission belt in the welding mechanism can drive multiple automatic welding guns and slider assemblies to move around the bottom edge of the outer side of the chassis shell. While automatically welding, it also meets the need for 135° overhead welding around the bottom edge of the chassis shell. Welding is performed at the most appropriate angle, which increases the strength and density of the weld and improves the welding quality.

[0020] 2. In this welding device, when the roller platform descends, the descending of the rack will drive the corresponding gear to rotate, and the rotating shaft will rotate synchronously through the belt drive. Through the principle of the connecting rod structure, the outer positioning component and the inner positioning component will work simultaneously, so that the soft rubber pad 1 and the soft rubber pad 2 simultaneously clamp the side of the chassis shell and keep it perpendicular to the bottom edge, so as to ensure the verticality of the side and bottom edges during welding, thereby ensuring that the appearance of the chassis shell after welding is standard and not deformed, thereby improving the quality of the product.

[0021] 3. In this welding device, the diameter of pulley two is designed to be smaller than that of pulley one, so that the speed of rotating rod three rotating per unit time is faster than that of rotating rod one, and the range of motion of rotating rod three is larger than that of rotating rod one, thereby avoiding contact with the bending rod when the chassis shell is raised, thereby ensuring the safety of the device during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 For the present invention Figure 1 Enlarged view of point A in the middle;

[0024] Figure 3 The working state of the roller lifting platform of the present invention Figure 1 ;

[0025] Figure 4 The working state of the roller lifting platform of the present invention Figure 2 ;

[0026] Figure 5 It is a structural schematic diagram of the positioning and clamping mechanism and the welding mechanism of the present invention;

[0027] Figure 6 For the present invention Figure 5 Enlarged view of point B in the middle;

[0028] Figure 7 It is a structural schematic diagram of the positioning and clamping assembly of the present invention;

[0029] Figure 8The working state of the positioning clamping mechanism of the present invention is Figure 1 ;

[0030] Figure 9 The working state of the positioning clamping mechanism of the present invention is Figure 2 ;

[0031] Figure 10 The working state of the positioning clamping mechanism of the present invention is Figure 3 ;

[0032] Figure 11 The working state of the positioning clamping mechanism of the present invention is Figure 4 ;

[0033] Figure 12 The working state of the positioning clamping mechanism of the present invention is Figure 5 ;

[0034] Figure 13 The working state of the positioning clamping mechanism of the present invention is Figure 6 .

[0035] Figure: 1, base; 2, feed conveyor belt; 3, discharge conveyor belt; 4, chassis shell; 5, roller lifting platform; 6, positioning clamping mechanism; 7, welding mechanism; 51, base; 52, scissor lift; 53, roller platform; 54, rack; 55, support rod; 61, rectangular plate; 611, rectangular opening; 62, L-shaped frame; 63, outer positioning assembly; 631, gear; 632, rotating rod 1; 633, rotating block 1; 634, rotating block 2 ; 635. Sliding rod; 636. Soft rubber pad 1; 637. Pulley 1; 64. Inner positioning assembly; 641. Rotating rod 2; 642. Rotating rod 3; 643. T-shaped rod; 644. Rotating rod 4; 645. Bending rod; 646. Soft rubber pad 2; 647. Pulley 2; 65. Rotating shaft; 71. Driving motor; 72. Positioning rod; 73. Pulley 3; 74. Transmission belt; 75. Annular track; 76. Automatic welding gun; 77. Slider assembly. DETAILED DESCRIPTION

[0036] In order to make the technical means, creative features, objectives and effects achieved by the present invention easier to understand, the present invention is further described below in conjunction with specific implementation methods. Example

[0037] like Figure 1 and Figure 2As shown, this embodiment discloses a welding device for charging pile production, including a base 1, a feeding conveyor 2 is provided at the front end of the upper end of the base 1, a discharging conveyor 3 is provided at the rear end of the upper end of the base 1, and a plurality of chassis shells 4 are provided at the upper ends of the feeding conveyor 2 and the discharging conveyor 3. A roller lifting platform 5 is provided at the middle end of the upper end of the base 1, and the feeding conveyor 2, the roller lifting platform 5 and the discharging conveyor 3 are connected. A welding mechanism 7 is also provided at the position of the roller lifting platform 5 in the middle end of the upper end of the base 1. A positioning and clamping mechanism 6 is also provided at the position of the roller lifting platform 5 in the middle end of the upper end of the base 1. The positioning and clamping mechanism 6 is composed of two mutually symmetrical positioning and clamping components. The roller lifting platform 5 and the welding mechanism 7 are located between the two positioning and clamping components. When working, the chassis shell 4 to be welded is transported backward by the feeding conveyor 2 to the upper end of the roller lifting platform 5. When the roller lifting platform 5 is working, it is welded in cooperation with the welding mechanism 7. After welding is completed, the welded chassis shell 4 is transported backward by the discharging conveyor 3 out of this welding process.

[0038] Specifically, such as Figure 3 and Figure 4 As shown, the roller lifting platform 5 is composed of a base 51, a scissor lift 52, and a roller platform 53 installed in sequence from bottom to top. The roller lifting platform 5 is a prior art. A hydraulic cylinder for driving the scissor lift 52 to move up and down is also installed on the base 51, which can make the roller platform 53 move up and down. A plurality of electric rollers are provided on the upper surface of the roller platform 53, which can cooperate with the feed conveyor 2 and the discharge conveyor 3 to work. Two racks 54 arranged front and back are fixedly installed on the left and right ends of the roller platform 53. Two support rods 55 arranged front and back are also fixedly connected to the middle part of the upper end of the base 1. The positions of the support rods 55 correspond to the gaps between the outer surfaces of the two rollers on the front and rear sides of the roller platform 53, that is, the roller platform 53 will move downward when the roller lifting platform 5 is working, and the support rods 55 can just pass through the gaps on the outer sides of the corresponding rollers. Therefore, the roller platform 53 will not contact the support rods 55 during the downward movement. At this time, due to the existence of the support rods 55, the support rods 55 will suspend the chassis shell 4 on the upper surface of the roller of the roller platform 53. During processing, the upper part of the support rods 55 can be made wider to increase the force-bearing area, so that the chassis shell 4 can be placed more stably.

[0039] Further, such as Figure 5-Figure 7As shown, the positioning and clamping assembly includes two rectangular plates 61 arranged front to back and two L-shaped frames 62 arranged front to back. The two rectangular plates 61 and the two L-shaped frames 62 are fixedly connected to the base 1, and the two L-shaped frames 62 are located between the two rectangular plates 61. An outer positioning assembly 63 is provided between the two rectangular plates 61, and an inner positioning assembly 64 is provided between the two L-shaped frames 62. When working, the outer positioning assembly 63 can clamp and position the chassis shell 4 from the outside, while the inner positioning assembly 64 can clamp and position the chassis shell 4 from the inside. The outer positioning assembly 63 and the inner positioning assembly 64 work synchronously and cooperate with each other, which can play a fixing role when welding the side panels and bottom panels of the chassis shell 4 to prevent position deviation. A rotating shaft 65 is also rotatably installed between the two rectangular plates 61, and a rectangular opening 611 is provided on the side of the upper end of the two rectangular plates 61 close to the roller lifting platform 5.

[0040] In order to be able to perform overhead welding around the bottom edge of the chassis shell 4 during work, Figure 5 and Figure 6 As shown, the welding mechanism 7 includes a rectangular annular track 75 and four pulley threes 73. The annular track 75 is fixedly mounted on the upper inner surface of the four rectangular openings 611, that is, the annular track 75 is fixedly connected to the four rectangular plates 61, and the four pulley threes 73 respectively correspond to the four corners of the inner surface of the annular track 75. There is no contact between the pulley three 73 and the annular track 75. A driving motor 71 is fixedly mounted on the upper end of the base 1, and the output end of the driving motor 71 is fixedly connected to one of the pulley threes 73. The lower ends of the remaining three pulley threes 73 are rotatably connected to the positioning rod 72. The lower end of the positioning rod 72 is fixedly connected to the base 1, and the outer surfaces of the four pulley threes 73 are wrapped together. The transmission belt 74 and the annular track 75 are provided with a plurality of slider assemblies 77. The upper end of the slider assembly 77 is provided with an automatic welding gun 76. Therefore, when the driving motor 71 is working, it will drive the plurality of pulleys 73 to rotate simultaneously through the transmission belt 74, so that the transmission belt 74 rotates as a whole and drives the plurality of automatic welding guns 76 and the slider assembly 77 to move around the bottom edge of the outer side of the chassis shell 4. The speed of the welding work of this device depends on the number of a group of automatic welding guns 76 and slider assemblies 77. When the automatic welding gun 76 is unfolded, the muzzle of the welding gun can just be welded at an elevation angle of 135° to the four sides of the bottom edge of the chassis shell 4 (the position of the welding gun muzzle can be adjusted by a motor or a cylinder).

[0041] It should be noted that the automatic welding gun 76 is an existing technology. It is an automatic welding machine based on motor control technology, single-chip computer control technology, PLC control technology and numerical control technology. It can be driven by belts, motors, cylinders and other methods to achieve automatic welding of the chassis shell 4. When not in use, the automatic welding gun 76 needs to be put away to prevent collision with the roller platform 53 moving up and down.

[0042] Therefore, when the roller lifting platform 5 is working, the two support rods 55 will lift the corresponding chassis shell 4 during the downward movement of the roller platform 53, and at this time the automatic welding gun 76 is in a retracted state.

[0043] Therefore, the specific implementation of this embodiment is as follows: during operation, the chassis shell 4 to be welded is transported backward by the feed conveyor belt 2 to the upper surface of the roller platform 53, at which time the roller lifting platform 5 starts to work, the roller platform 53 will descend, and the support rod 55 passes through the gap at the corresponding outer side of the roller, and the chassis shell 4 on the upper surface of the roller platform 53 is suspended in the air;

[0044] At this time, the welding mechanism 7 starts to work, and the driving motor 71 drives multiple pulleys 73 to rotate simultaneously through the transmission belt 74, so that the transmission belt 74 rotates as a whole and drives multiple automatic welding guns 76 and slider assemblies 77 to move around the bottom edge of the outer side of the chassis shell 4, thereby welding the bottom edge and side edge connection of the chassis shell 4. Example

[0045] This embodiment further improves the outer positioning assembly 63 and the inner positioning assembly 64 on the basis of the first embodiment, so that the left and right sides of the chassis shell 4 can be clamped and fixed when the two support rods 55 lift the chassis shell 4 (because the size of the sheet metal is fixed during processing, by limiting the verticality between the left and right sides and the bottom side, it can be ensured that the front and rear sides are also perpendicular to the bottom side).

[0046] Specifically, such as Figure 7 As shown, the outer positioning assembly 63 includes two rotating rods 1 632 fixedly installed on the front and rear sides of the outer surface of the rotating shaft 65, and the two rotating rods 1 632 are provided with a rotating block 1 633 at the end away from the rotating shaft 65. The rotating block 1 633 is rotatably connected to the corresponding rotating rod 1 632. The upper part of the end of the two rectangular plates 61 close to each other is rotatably installed with a rotating block 2 634. A sliding rod 635 is commonly provided between the rotating block 1 633 and the rotating block 2 634 located on the same side. The connection relationship between the sliding rod 635 and the rotating block 1 633 is a fixed connection. The outer surface of the sliding rod 635 is away from the rotating block 1 633 and is slidably connected to the rotating block 2 634. The outer surface of the rotating block 1 633 is away from the sliding rod 635. The end is fixedly connected to a soft rubber pad 1 636.

[0047] Therefore, when the rotating shaft 65 rotates, it can drive the rotating rod 1 632 to rotate, and the rotating rod 1 632 will drive the sliding rod 635 to rotate with the rotating block 2 634 as the axis.

[0048] Furthermore, in order to apply power to the above-mentioned working process, a gear 631 is rotatably installed on one side of the roller lifting platform 5 at one end of the two rectangular plates 61 that are close to each other. The two gears 631 are connected to the rotating shaft 65 by a belt, so the gear 631 and the rotating shaft 65 will rotate synchronously. The positions of the two gears 631 correspond to the two racks 54 on the same side of the left and right sides, and the gear 631 is adapted to the rack 54. Therefore, when the roller lifting platform 5 is working, in the process of the roller platform 53 moving downward, the rotating shaft 65 will rotate through the contact between the rack 54 and the gear 631, thereby driving the operation of the outer positioning component 63.

[0049] Therefore, the working process of the outer positioning component 63 is as follows Figures 8-13 As shown, first Figure 8 In the initial position shown, the rotating rod 1 632 is located on the side away from the roller lifting platform 5. As the roller lifting platform 5 starts to work, the roller platform 53 and the four racks 54 are lowered. The racks 54 drive the corresponding gears 631 to rotate during the descent, so that the rotating rods 1 632 on both sides rotate toward the side close to the chassis shell 4 (as shown in FIG. Figures 8-10 As shown in FIG), the rotating block 1 633 will gradually approach the rotating block 2 634, and the rotating block 2 634 is also rotating during this process; and after the rotating block 1 633 and the rotating block 2 634 reach the closest position (as shown in FIG). Figure 10 As shown in FIG1 ), the rotating rod 1 632 continues to rotate to swing the soft rubber pad 1 636 toward the chassis shell 4 and pull the slide bar 635 out (as shown in FIG1 ). Figure 11-13 As shown), until the soft rubber pad 1 636 contacts the side of the chassis shell 4. Since the soft rubber pad 1 636 is made of soft material, there is a certain buffer space when the soft rubber pad 1 636 contacts the side of the chassis shell 4.

[0050] In order to prevent the side of the chassis shell 4 from tilting inwards due to excessive force when the soft rubber pad 636 contacts the side of the chassis shell 4, Figure 7As shown, the inner positioning assembly 64 includes a second rotating rod 641 and a third rotating rod 642 rotatably mounted between the horizontal portions of the two L-shaped frames 62. The third rotating rod 642 is located in front of the second rotating rod 641. A T-shaped rod 643 is rotatably mounted on the outer surface of the second rotating rod 641 at one end away from the L-shaped frame 62. A fourth rotating rod 644 is rotatably mounted on the end of the third rotating rod 642 away from the L-shaped frame 62. A bending rod 645 is rotatably mounted on the end of the fourth rotating rod 644 away from the third rotating rod 642. The bending rod 645 is away from the fourth rotating rod 641. One end of 44 is fixedly connected to a soft rubber pad 2 646, and the bending rod 645 is composed of a plurality of straight rods connected obliquely. There is no special limitation on its specific shape and angle, as long as the soft rubber pad 2 646 is kept vertical when contacting the side of the inner surface of the chassis shell 4. The other two branches of the T-shaped rod 643 are respectively rotatably connected to the middle part of the outer surface of the rotating rod 3 642 and the bending rod 645. The T-shaped design of the T-shaped rod 643 is only for better processing. In the actual process, it is only necessary to ensure that the position distance of the three points of the T-shaped rod 643 is fixed.

[0051] Therefore, the working process of the outer positioning component 63 is as follows Figures 8-13 As shown, when the rotating rod 3 642 rotates, the T-shaped rod 643 and the rotating rod 4 644 can be driven to rotate. Due to the restriction of the T-shaped rod 643 and the rotating rod 2 641 on the bending rod 645 and the rotating rod 3 642, the bending rods 645 on both sides will move closer to the inside of the chassis housing 4 (as shown in FIG. Figures 8-11 As shown); until the two soft rubber pads 646 on both sides enter the interior of the chassis shell 4, the rotating rod 642 is located on the lower side of the horizontal portion of the L-shaped frame 62 and begins to rotate away from the chassis shell 4, and the two soft rubber pads 646 will rotate in a direction away from each other (as shown); Figure 11 and Figure 12 As shown), until it contacts the inner surface side of the chassis shell 4. Since the soft rubber pad 2 646 is made of soft material, the soft rubber pad 2 646 also has a certain buffer space when contacting the inner surface side of the chassis shell 4, which is the same as the soft rubber pad 1 636.

[0052] In order to provide a power source for the working process of the inner positioning assembly 64 and to synchronize the working processes of the outer positioning assembly 63 and the inner positioning assembly 64, the ends of the horizontal parts of the two L-shaped frames 62 that are away from each other are rotatably installed with pulleys 2 647. The two pulleys 2 647 are coaxial with the side of the rotating rod 3 642 close to the L-shaped frame 62. The outer surface of the rotating shaft 65 corresponding to the positions of the two pulleys 2 647 are fixedly connected with pulleys 1 637, and the pulleys 1 637 and 2 647 on the same side are connected by a belt. Therefore, when the gear 631 drives the rotating shaft 65 to rotate, it will drive the pulley 2 647 to rotate through the pulley 1 637, so that Therefore, pulley two 647 can rotate with rotating rod three 642 to realize the working process of the above-mentioned inner positioning component 64, and the diameter of pulley two 647 is smaller than the diameter of pulley one 637, because the working range of the inner positioning component 64 overlaps with the lifting range of the chassis shell 4. In order to stagger the positions of the two and avoid collision, the diameter of pulley two 647 is designed to be smaller than that of pulley one 637, so that the speed of rotation of rotating rod three 642 per unit time is faster than the speed of rotation of rotating rod one 632, and the range of activity of rotating rod three 642 is larger than the range of activity of rotating rod one 632, thereby avoiding contact with the bending rod 645 when the chassis shell 4 is raised.

[0053] Therefore, the specific implementation of this embodiment is as follows: as the roller lifting platform 5 starts to work, the roller platform 53 descends with the four racks 54, and the racks 54 drive the corresponding gears 631 to rotate during the descent, and the rotating shaft 65 is rotated synchronously through the belt transmission, so that the rotating rod 1 632 rotates toward the side close to the chassis shell 4 until the soft rubber pad 1 636 contacts the side of the outer surface of the chassis shell 4; at the same time, when the rotating shaft 65 rotates, the pulley 1 637 also drives the pulley 2 647 with a smaller diameter through the belt to rotate with a smaller diameter. It rotates at a fast speed, so that the pulley 2 647 rotates with the rotating rod 3 642, and the bending rod 645 and the rotating rod 3 642 are limited by the T-shaped rod 643 and the rotating rod 2 641, so that the bending rod 645 and the soft rubber pad 2 646 on both sides are moved closer to the chassis shell 4 until the two soft rubber pads 2 646 contact the side edges of the inner surface of the chassis shell 4, so that the soft rubber pad 1 636 and the soft rubber pad 2 646 simultaneously clamp the side edges of the chassis shell 4 and keep them perpendicular to the bottom edge, ensuring that the appearance of the chassis shell 4 after welding is standard and not deformed.

[0054] The basic principles, main features, and advantages of the present invention are shown and described above. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and modifications may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and modifications are intended to fall within the scope of the present invention. The scope of protection claimed in the present invention is defined by the appended claims and their equivalents.

Claims

1. A welding device for producing charging piles, comprising a base (1), characterized in that: A feed conveyor belt (2) is provided at the front of the upper end of the base (1), a discharge conveyor belt (3) is provided at the rear of the upper end of the base (1), and a plurality of chassis shells (4) are provided at the upper ends of the feed conveyor belt (2) and the discharge conveyor belt (3). A roller lifting platform (5) is provided at the middle of the upper end of the base (1), and a welding mechanism (7) is provided at the position of the roller lifting platform (5) at the middle of the upper end of the base (1). A positioning clamping mechanism (6) is provided at the position of the roller lifting platform (5) at the middle of the upper end of the base (1), and the positioning clamping mechanism (6) is composed of two mutually symmetrical positioning clamping components. The positioning and clamping assembly comprises two rectangular plates (61) arranged front to back and two L-shaped frames (62) arranged front to back, the two L-shaped frames (62) being located between the two rectangular plates (61), an outer positioning assembly (63) being provided between the two rectangular plates (61), an inner positioning assembly (64) being provided between the two L-shaped frames (62), a rotating shaft (65) being rotatably mounted between the two rectangular plates (61), and a rectangular opening (611) being provided on one side of the upper ends of the two rectangular plates (61) close to the roller lifting platform (5).

2. A welding device for charging pile production according to claim 1, characterized in that: The roller lifting platform (5) is composed of a base (51), a scissor lift (52), and a roller platform (53) which are installed in sequence from bottom to top. Two racks (54) arranged front to back are fixedly installed at both left and right ends of the roller platform (53). Two support rods (55) arranged front to back are also fixedly connected to the middle of the upper end of the base (1). The positions of the two support rods (55) correspond to the gaps between the outer surfaces of the two rollers on the front and rear sides of the roller platform (53).

3. A welding device for charging pile production according to claim 2, characterized in that: The welding mechanism (7) includes a rectangular annular track (75) and four pulleys (73), wherein the annular track (75) is fixedly mounted on the upper inner surface of four rectangular openings (611), and the four pulleys (73) correspond to the four corners of the inner surface of the annular track (75). A driving motor (71) is fixedly mounted on the upper end of the base (1), and the output end of the driving motor (71) is fixedly connected to one of the pulleys (73). The lower ends of the other three pulleys (73) are rotatably connected to a positioning rod (72), and the lower ends of the positioning rod (72) are fixedly connected to the base (1). A transmission belt (74) is wound around the outer surfaces of the four pulleys (73), and a plurality of slider assemblies (77) are provided between the transmission belt (74) and the annular track (75). An automatic welding gun (76) is provided at the upper end of the slider assembly (77).

4. The welding device for charging pile production according to claim 3, characterized in that: The outer positioning assembly (63) includes two rotating rods (632) fixedly mounted on the front and rear sides of the outer surface of the rotating shaft (65), and a rotating block (633) is provided at one end of the two rotating rods (632) away from the rotating shaft (65). A rotating block (634) is rotatably mounted on the upper part of the ends of the two rectangular plates (61) close to each other. A sliding rod (635) is provided between the rotating block (633) and the rotating block (634) located on the same side. A soft rubber pad (636) is fixedly connected to the end of the outer surface of the rotating block (633) away from the sliding rod (635).

5. The welding device for charging pile production according to claim 4, characterized in that: The sliding rod (635) is fixedly connected to the rotating block 1 (633), and the outer surface of the sliding rod (635) is slidably connected to the rotating block 2 (634) at a side away from the rotating block 1 (633).

6. The welding device for charging pile production according to claim 5, characterized in that: A gear (631) is rotatably mounted on one side of the two rectangular plates (61) at one end close to each other and close to the roller lifting platform (5). The two gears (631) are connected to the rotating shaft (65) via a belt. The positions of the two gears (631) correspond to the two racks (54) on the same side of the left and right sides, and the gears (631) are adapted to the racks (54).

7. The welding device for charging pile production according to claim 6, characterized in that: The inner positioning assembly (64) includes a rotating rod 2 (641) and a rotating rod 3 (642) rotatably mounted between the horizontal parts of the two L-shaped frames (62), the rotating rod 3 (642) is located at the front side of the rotating rod 2 (641), and a T-shaped rod (643) is rotatably mounted on the end of the outer surface of the rotating rod 2 (641) away from the L-shaped frame (62), and a rotating rod 4 (644) is rotatably mounted on the end of the rotating rod 3 (642) away from the L-shaped frame (62), and a bending rod (645) is rotatably mounted on the end of the rotating rod 4 (644) away from the rotating rod 3 (642), and a soft rubber pad 2 (646) is fixedly connected to the end of the bending rod (645) away from the rotating rod 4 (644), and the other two branches of the T-shaped rod (643) are rotatably connected to the middle parts of the outer surfaces of the rotating rod 3 (642) and the bending rod (645), respectively.

8. The welding device for charging pile production according to claim 7, characterized in that: The ends of the horizontal parts of the two L-shaped frames (62) that are away from each other are both rotatably mounted with pulleys 2 (647), and the two pulleys 2 (647) are both coaxial with the side of the rotating rod 3 (642) close to the L-shaped frame (62). The outer surface of the rotating shaft (65) corresponding to the positions of the two pulleys 2 (647) are fixedly connected with pulleys 1 (637), and the pulleys 1 (637) and 2 (647) on the same side are connected by a belt, and the diameter of the pulley 2 (647) is smaller than the diameter of the pulley 1 (637).

9. The welding device for charging pile production according to claim 8, characterized in that: When the roller lifting platform (5) is working, the two support rods (55) will lift the corresponding chassis shell (4) during the downward movement of the roller platform (53), and at this time, the automatic welding gun (76) is in a retracted state.

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