Positioning and clamping mechanism for stamping and welding of new energy automobile parts

Abstract

The application discloses a positioning and clamping mechanism for stamping part welding processing of a new energy automobile, belongs to the technical field of welding processing clamping and positioning, and comprises a base, a center support is fixedly installed at the middle position of the top of the base, four side edge supports are arranged on the top of the base, cleaning mechanisms are arranged outside the center support and the middle two side edge supports, and a spraying mechanism and a gas blowing mechanism are arranged on the top of the base. The cleaning mechanism can wipe the lens of the sensor, the cleaning liquid is sprayed on the lens of the sensor by cooperating with the spraying mechanism, the lens of the sensor is wiped by cooperating with the cleaning paper tape in the cleaning mechanism, so that the oil stains and dirt on the surface of the lens of the sensor are removed, and the gas blowing mechanism can blow away the dust on the surface of the sensor, and a gas barrier is formed on the surface of the lens of the sensor during the welding process, so that the lens of the sensor is protected.

Description

Technical Field

[0001] This invention relates to the field of welding processing clamping and positioning technology, and in particular to a positioning and clamping mechanism for welding stamping parts of new energy vehicles. Background Technology

[0002] Stamped parts for new energy vehicles (such as battery pack housings, doors, side panels, chassis structural parts, etc.) are typically characterized by large size, complex shape, low rigidity, and high precision requirements. During the processing of these stamped parts, welding is required, often using spot welding. This welding process necessitates the use of positioning and clamping mechanisms to secure and fix the parts.

[0003] Currently, the positioning and clamping mechanism used in the welding processing of stamped parts for new energy vehicles places the stamped parts on a fixture and positions them using a positioning pin structure. With the development of automation, in order to ensure the accurate positioning of the stamped parts, a spacing sensor is used to measure the spacing between the stamped parts during the positioning process. After positioning, the clamping block is rotated and clamped onto the stamped parts by a cylinder to fix them in place. However, in current use, after a long period of use, the spacing positioning sensor is covered by spatter, dust, and oil generated during the welding process, which causes the sensor signal to attenuate or be falsely triggered, resulting in the output of incorrect status signals. The control system then treats these as real signals, leading to production interruptions, equipment damage, or product quality defects.

[0004] In summary, there is a need to invent a positioning and clamping mechanism for welding stamped parts of new energy vehicles to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a positioning and clamping mechanism for welding stamping parts of new energy vehicles.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A positioning and clamping mechanism for welding stamped parts of new energy vehicles includes a base, a central support fixedly installed at the top center of the base, four side supports on the top of the base, positioning pins fixedly installed on the top of the two outer side supports, clamping units on the outside of the four side supports, a cleaning mechanism on the outside of the central support and the two middle side supports, a spraying mechanism and an air blowing mechanism on the top of the base, a fixing frame fixedly installed on the outside of the central support and the two middle side supports, and a distance sensor fixedly installed on the top of the fixing frame.

[0008] The cleaning mechanism includes a mounting frame, which is fixedly mounted on the outside of a central support and two middle side supports. A first motor is fixedly mounted on the outside of the mounting frame, and a threaded cylinder is fixedly mounted on the output end of the first motor. A threaded rod is threaded inside the threaded cylinder, and a sliding frame is fixedly mounted on the end of the threaded rod away from the threaded cylinder. Two limiting rods are fixedly mounted on the outside of the sliding frame, and two limiting cylinders are fixedly mounted on the inside of the mounting frame. A drive unit is provided on the outside of the sliding frame, and a transmission unit is provided extending from the inside of the sliding frame to the outside. A fixed guide post is rotatably mounted on the outside of the sliding frame, and a guide block is fixedly mounted on the outside of the sliding frame. A cleaning paper tape is provided on the outside of the drive unit, the transmission unit, and the guide block.

[0009] Preferably, the clamping unit includes a cylinder, which is rotatably mounted on the outside of four side supports. A clamping block is rotatably mounted on the telescopic end of the cylinder, and a connecting block is rotatably mounted between the clamping block and the side supports.

[0010] Preferably, the drive unit includes two rotating columns, which are rotatably mounted inside the sliding frame and extend to both sides. A second motor is fixedly mounted on the inner end of the sliding frame, and the output end of the second motor is fixedly mounted to one of the rotating columns. Synchronous pulleys are fixedly mounted on the outside of the two rotating columns, and a synchronous belt is installed between the two synchronous pulleys. A winding drum is sleeved on the outside of the two rotating columns, and a locking nut is installed on the external thread of the rotating columns.

[0011] Preferably, the outer wall of the rotating column is provided with a groove, the inner wall of the winding cylinder is provided with a protrusion, and the winding cylinder is slidably mounted on the outside of the rotating column by means of the cooperation between the protrusion and the groove.

[0012] Preferably, the transmission unit includes two guide rods, which are fixedly installed inside the sliding frame. Two sliding blocks are slidably installed inside the sliding frame. A fixing spring is fixedly installed between the bottom of the sliding block and the inner wall of the sliding frame. A movable guide post is rotatably installed on the outer side of the sliding block.

[0013] Preferably, the spraying mechanism includes a mounting base, which is fixedly mounted on the inner side of the sliding frame. A nozzle is fixedly mounted inside the mounting base, and a spray head is fixedly mounted on the nozzle. A liquid storage tank is fixedly mounted on the top of the base, and a pump is fixedly mounted on the top of the liquid storage tank. A feed pipe is fixedly mounted on the top of the pump, and the end of the feed pipe away from the pump is fixedly mounted on the top of the nozzle. A suction pipe is fixedly mounted on the bottom of the pump. A feed inlet is provided on the top of the liquid storage tank, and a sealing cap is threaded onto the external part of the feed inlet. A fixing block is fixedly mounted on the outside of the sliding frame, and a sliding pressure block is slidably mounted inside the fixing block. A return spring is fixedly mounted between the top of the sliding pressure block and the inner wall of the fixing block. A limit switch is provided on the mounting frame.

[0014] Preferably, the sliding block has a right-angled trapezoidal structure with the inclined surface facing downwards.

[0015] Preferably, the air blowing mechanism includes an air blowing ring, which is fixedly installed outside the spacing sensor. An air inlet is provided on the top of the air blowing ring. A filter box is fixedly installed on the top of the base. A filter element is movably installed inside the filter box. A connecting pipe is fixedly installed on the right side of the filter box. An air pump is fixedly installed on the right side of the connecting pipe and is fixedly installed on the top of the base. An air extraction pipe is fixedly installed on the left side of the filter box. The end of the air extraction pipe away from the filter box is fixedly installed outside the air blowing ring. An air blowing pipe is fixedly installed on the right side of the air pump. The end of the air blowing pipe away from the air pump is fixedly installed outside the air blowing ring. An air blowing chamber and an air suction chamber are provided inside the air blowing ring.

[0016] Preferably, the air blowing ring has a partition inside, and the air blowing pipe is connected to one side of the air blowing chamber, while the air extraction pipe is connected to one side of the air suction chamber.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. Through the linkage design of the first motor, the second motor, the synchronous pulley, and the synchronous belt, the automatic feeding, wiping, and winding of the cleaning paper tape are integrated, so that the cleaning paper tape can wipe the sensor lens. At the same time, the winding drum is installed by the cooperation of the protrusion and the groove of the rotating column, and is fixed with the locking nut. The disassembly and assembly process is simple and quick, and it is convenient to replace the cleaning paper tape.

[0019] 2. By using the linkage structure of sliding pressure block and limit switch, spraying is triggered only when the nozzle moves directly above the distance sensor lens, avoiding waste of cleaning fluid. The cleaning fluid is sprayed in advance and softens the contaminants on the lens surface, reducing the frictional resistance between the cleaning paper tape and the lens, reducing wear on the lens, and the softened contaminants are easier to remove by the cleaning paper tape, effectively improving the thoroughness of lens cleaning and preventing residual stains from affecting the detection accuracy of the distance sensor.

[0020] 3. The blowing chamber blows away dust from the lens through the air vents, while forming an air curtain to block new contaminants and prevent dust from affecting the detection accuracy of the spacing sensor. At the same time, the suction chamber actively sucks in the blown dust, which is then filtered by the filter box and filter element and collected to prevent dust from spreading and contaminating the equipment or working environment. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the external structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the rear view structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the external structure of the base and connected mechanism of the present invention;

[0024] Figure 4 This is a schematic diagram of the external structure of the cleaning mechanism of the present invention;

[0025] Figure 5 This is a schematic diagram of the cleaning mechanism in the start-up state of the present invention;

[0026] Figure 6 This is a schematic diagram of the external structure of the sliding frame and the connected mechanism of the present invention;

[0027] Figure 7 This is a schematic diagram of the external structure of the cleaning paper tape and the connected mechanism of the present invention;

[0028] Figure 8 This is an exploded structural diagram of the cleaning paper tape and its connected mechanism according to the present invention;

[0029] Figure 9 This is a schematic diagram of the external structure of the spraying mechanism of the present invention;

[0030] Figure 10 This is a schematic diagram of the breakdown structure of the liquid storage tank and connected mechanism of the present invention;

[0031] Figure 11 This is a bottom view schematic diagram of the sliding frame and connected mechanism of the present invention;

[0032] Figure 12 This is a cross-sectional view of the mounting frame and connected mechanism of the present invention.

[0033] Figure 13 This is a cross-sectional view of the fixing block and its connected mechanism according to the present invention;

[0034] Figure 14 This is a schematic diagram of the external structure of the air blowing mechanism of the present invention;

[0035] Figure 15This is a side cross-sectional view of the air blowing ring and its connected mechanism of the present invention.

[0036] Figure 16 This is a top cross-sectional view of the air blowing ring and its connected mechanism of the present invention.

[0037] In the diagram: 1. Base; 2. Central support; 3. Side support; 4. Positioning pin; 5. Clamping unit; 51. Cylinder; 52. Clamping block; 53. Connecting block; 6. Cleaning mechanism; 61. Mounting frame; 62. First motor; 63. Threaded cylinder; 64. Threaded rod; 65. Sliding frame; 66. Limiting rod; 67. Limiting cylinder; 68. Drive unit; 681. Rotating column; 682. Second motor; 683. Synchronous pulley; 684. Synchronous belt; 685. Winding drum; 686. Locking nut; 69. Transmission unit; 691. Guide rod; 692. Sliding block; 693. Fixed spring; 694. Movable guide column; 6 10. Fixed guide post; 611. Cleaning paper tape; 612. Guide block; 7. Spraying mechanism; 71. Mounting base; 72. Nozzle; 73. Spray head; 74. Feed pipe; 75. Extraction pump; 76. Liquid storage tank; 77. Extraction pipe; 78. Feed inlet; 79. Sealing cover; 710. Fixed block; 711. Sliding pressure block; 712. Return spring; 713. Limit switch; 8. Air blowing mechanism; 81. Air blowing ring; 82. Filter box; 83. Filter element; 84. Connecting pipe; 85. Air pump; 86. Suction pipe; 87. Air blowing pipe; 88. Air blowing chamber; 89. Suction chamber; 9. Fixing frame; 10. Spacing sensor. Detailed Implementation

[0038] See Figures 1-3 A positioning and clamping mechanism for welding stamped parts of new energy vehicles includes a base 1, a central support 2 fixedly installed at the top center of the base 1, four side supports 3 on the top of the base 1, positioning pins 4 fixedly installed on the top of the two outer side supports 3, clamping units 5 on the outside of the four side supports 3, cleaning mechanisms 6 on the outside of the central support 2 and the two middle side supports 3, a spraying mechanism 7 and an air blowing mechanism 8 on the top of the base 1, and a fixing frame 9 fixedly installed on the outside of the central support 2 and the two middle side supports 3. A spacing sensor 10 is fixedly installed on the top of the fixing frame 9 for positioning the stamped parts of new energy vehicles.

[0039] See Figure 2As shown, the clamping unit 5 includes a cylinder 51, which is rotatably mounted on the outside of four side supports 3. A clamping block 52 is rotatably mounted on the telescopic end of the cylinder 51. A connecting block 53 is rotatably mounted between the clamping block 52 and the side supports 3. The end of the clamping block 52 away from the cylinder 51 is provided with two inclined "L"-shaped clamping structures adapted to the stamped part, used to clamp the upper part of the stamped part. The top of the side supports 3 is provided with two opposite inclined "L"-shaped support structures, used to support the bottom of the stamped part. By placing the stamped part on the central support 2 and the side supports 3, and allowing the positioning pin 4 to pass through the through hole on the stamped part, the spacing of the stamped part is detected by the spacing sensor 10 to ensure that the stamped part is placed in place. Then, driven by the cylinder 51, the clamping block 52 is rotated through the connecting block 53, so that the clamping block 52 is pressed against the upper surface of the stamped part.

[0040] In the prior art, after prolonged use, the spacing positioning sensor may experience signal attenuation or false triggering due to the presence of spatter, dust, and oil generated during the welding process. This results in the output of incorrect status signals, which the control system then treats as genuine signals, leading to production interruptions, equipment damage, or product quality defects.

[0041] In this application, during use, the cleaning mechanism 6 wipes the sensor lens, while the spraying mechanism 7 sprays cleaning fluid onto the sensor lens. The cleaning paper strip 611 in the cleaning mechanism 6 further wipes the sensor lens, removing oil and dirt from its surface. The air blowing mechanism 8 not only blows away dust from the sensor surface but also forms a gas barrier on the sensor lens surface during welding, protecting it and effectively reducing contaminant adhesion. Therefore, by forming an air curtain to actively prevent contaminant adhesion, blowing away dust, and pre-treating contaminants that have adhered to or passed through the air curtain with cleaning fluid to soften and dissolve them, the cleaning mechanism 6 wipes them away, thus completely removing the contaminants.

[0042] See Figure 4-6As shown, the cleaning mechanism 6 includes a mounting frame 61, which is fixedly mounted on the outside of the central support 2 and the two side supports 3 in the middle. A first motor 62 is fixedly mounted on the outside of the mounting frame 61. A threaded cylinder 63 is fixedly mounted on the output end of the first motor 62. The threaded cylinder 63 is rotatably mounted through the mounting frame 61. A threaded rod 64 is threaded inside the threaded cylinder 63. A sliding frame 65 is fixedly mounted on the end of the threaded rod 64 away from the threaded cylinder 63. Two limiting rods 66 are fixedly mounted on the outside of the sliding frame 65. Two limiting cylinders 67 are fixedly mounted on the inside of the mounting frame 61. The ends of the limiting rods 66 away from the sliding frame 65 are slidably mounted inside the limiting cylinders 67. A drive unit 68 is provided on the outside of the sliding frame 65. A transmission unit 69 is provided extending from the inside of the sliding frame 65 to the outside. Two fixed guide posts 610 are rotatably mounted on the outside of the sliding frame 65. A guide block 612 is fixedly mounted on the outside of the sliding frame 65. A cleaning paper tape 611 is provided on the outside of the drive unit 68, the transmission unit 69, and the guide block 612.

[0043] See Figure 7 and Figure 8 As shown, the drive unit 68 includes two rotating columns 681, which are rotatably mounted inside the sliding frame 65 and extend to both sides. A second motor 682 is fixedly mounted on the inner end of the sliding frame 65. The output end of the second motor 682 is fixedly mounted to one of the rotating columns 681. Synchronous pulleys 683 are fixedly mounted on the outside of the two rotating columns 681. A synchronous belt 684 is installed between the two synchronous pulleys 683 for transmission. A winding drum 685 is sleeved on the outside of the two rotating columns 681. The two ends of the cleaning paper tape 611 are respectively wound around the outside of the two winding drums 685. A locking nut 686 is installed on the external thread of the rotating column 681.

[0044] The outer wall of the rotating column 681 is provided with a groove, and the inner wall of the winding cylinder 685 is provided with a protrusion. The winding cylinder 685 is slidably installed on the outside of the rotating column 681 through the cooperation of the protrusion and the groove.

[0045] See Figure 8 As shown, the transmission unit 69 includes two guide rods 691, which are fixedly installed inside the sliding frame 65. Two sliding blocks 692 are slidably installed inside the sliding frame 65. Through holes are provided at the corresponding positions of the sliding blocks 692 and the guide rods 691, and the guide rods 691 pass through the through holes so that the sliding blocks 692 are slidably installed on their outside. A fixing spring 693 is fixedly installed between the bottom of the sliding block 692 and the inner wall of the sliding frame 65. Movable guide posts 694 are rotatably installed on the outer side of the sliding blocks 692. The cleaning paper tape 611 symmetrically passes around the two movable guide posts 694 and the two fixed guide posts 610.

[0046] By mounting a winding drum 685 with cleaning paper tape 611 wound on a rotating column 681, and then tightening the locking nut 686, the cleaning paper tape 611 is made to pass over the fixed guide column 610, the movable guide column 694, and the guide block 612. During the winding process, the sliding block 692 slides on the guide rod 691, and in conjunction with the fixed spring 693, the sliding block 692 slides, causing the movable guide column 694 to move and adjust. The rotating column 681, connected to the second motor 682, rotates to release the cleaning paper tape 611, while the other rotating column 681 rotates synchronously to rewind the cleaned cleaning paper tape 611. A motor 62 drives a threaded cylinder 63 to rotate, causing the threaded cylinder 63 to work with a threaded rod 64 to drive a sliding frame 65 to slide inward. The sliding frame 65 then moves the cleaning paper tape 611 onto the lens of the spacing sensor 10. A second motor 682 drives a rotating column 681 to rotate, simultaneously driving a synchronous pulley 683 to rotate. The synchronous pulley 683, via a synchronous belt 684, drives another rotating column 681 to rotate, causing the cleaning paper tape 611 to be fed and transported from one side. This allows the cleaning paper tape 611 to pass through the lens of the spacing sensor 10, wiping the lens. The wiped cleaning paper tape 611 is then wound up and recycled.

[0047] See Figures 9-13 The spraying mechanism 7 includes a mounting base 71, which is fixedly mounted inside the sliding frame 65. A nozzle 72 is fixedly mounted inside the mounting base 71, and a spray head 73 is fixedly mounted on the nozzle 72. A liquid storage tank 76 is fixedly mounted on the top of the base 1, and a pump 75 is fixedly mounted on the top of the liquid storage tank 76. An inlet pipe 74 is fixedly mounted on the top of the pump 75, and the end of the inlet pipe 74 away from the pump 75 is fixedly mounted on the top of the nozzle 72. An extraction pipe 77 is fixedly mounted on the bottom of the pump 75. The top of the liquid storage tank 76 has a through hole, and the extraction tube 77 extends through the through hole into the interior of the liquid storage tank 76. The top of the liquid storage tank 76 is provided with a feed port 78, and a sealing cap 79 is threaded onto the outside of the feed port 78. A fixing block 710 is fixedly installed on the outside of the sliding frame 65. A sliding pressure block 711 is slidably installed inside the fixing block 710. A return spring 712 is fixedly installed between the top of the sliding pressure block 711 and the inner wall of the fixing block 710. A limit switch 713 is provided on the mounting frame 61.

[0048] The sliding block 711 has a right-angled trapezoidal structure with the inclined surface facing down. The limit switch 713 is a rotary press-trigger type. Each press connects the contact and sends an electrical signal. Then, through the internal spring structure, it is reset and the limit switch 713 contacts are disconnected.

[0049] As the sliding frame 65 moves the cleaning paper tape 611 to the lens of the spacing sensor 10, the sliding frame 65 drives the fixing block 710 to slide. When the fixing block 710 moves the sliding pressure block 711, the long right-angle side of the sliding pressure block 711 presses the limit switch 713, thus turning on the limit switch 713. At this time, the nozzle 73 is just above the spacing sensor 10. The limit switch 713 is turned on, the extraction pump 75 starts, and the cleaning fluid inside the storage tank 76 is extracted through the extraction pipe 77 and sent into the nozzle 72 through the feed pipe 74. The cleaning fluid is then sprayed onto the lens through the nozzle 73 on the nozzle 72, thus cleaning the lens. The liquid softens contaminants on the lens, thereby improving the cleaning effect of the cleaning paper tape 611 on the lens. After cleaning, the sliding bracket 65 slides outward to reset. At this time, the limit switch 713 is in the reset state. During the reset process, the protrusion of the limit switch 713 presses the inclined surface of the sliding block 711, causing the sliding block 711 to press the fixed reset spring 712 and enter the interior of the fixed block 710. At this time, the limit switch 713 does not move. When the sliding block 711 separates from the limit switch 713, the sliding block 711 automatically pops out and resets under the action of the reset spring 712, preparing for the next cleaning.

[0050] See Figures 14-16 The air blowing mechanism 8 includes an air blowing ring 81, which is fixedly installed outside the distance sensor 10. An air inlet is provided on the top of the air blowing ring 81. A filter box 82 is fixedly installed on the top of the base 1. A filter element 83 is movably installed inside the filter box 82. A connecting pipe 84 is fixedly installed on the right side of the filter box 82. An air pump 85 is fixedly installed on the right side of the connecting pipe 84 and is fixedly installed on the top of the base 1. An air extraction pipe 86 is fixedly installed on the left side of the filter box 82. The end of the air extraction pipe 86 away from the filter box 82 is fixedly installed outside the air blowing ring 81. An air blowing pipe 87 is fixedly installed on the right side of the air pump 85. The end of the air blowing pipe 87 away from the air pump 85 is fixedly installed outside the air blowing ring 81. An air blowing chamber 88 and an air suction chamber 89 are provided inside the air blowing ring 81.

[0051] The air blowing ring 81 has a partition inside, and the air blowing pipe 87 is connected to one side of the air blowing chamber 88, while the air extraction pipe 86 is connected to one side of the air suction chamber 89.

[0052] After the stamped part is positioned, the air pump 85 is started. The blowing end of the air pump 85 sends gas through the blowing pipe 87 into the blowing chamber 88 of the blowing ring 81. The blowing ring 81 blows air outward through the top air hole to blow away the dust on the lens of the distance sensor 10. At the same time, an air curtain is formed outside the lens to protect the surface of the lens. Meanwhile, the suction chamber 89 sucks in the dust and sends it into the interior of the filter box 82 through the suction pipe 86. The intake air is filtered by the internal filter element 83 structure. The filtered air returns to the air inlet of the air pump 85 through the connecting pipe 84 to form a gas circulation.

[0053] In this invention, firstly, the clamping block 52 is driven to rotate by the cylinder 51, so that the clamping block 52 is flipped outward through the connecting block 53 to open it. The stamping part is first placed horizontally from the front, and then placed on the top of the central support 2 and the side support 3 from top to bottom. The positioning pin 4 passes through the through hole of the stamping part to position it. The spacing of the stamping part is measured by the spacing sensor 10 to ensure accurate positioning. Then, the clamping block 52 is driven to rotate by the cylinder 51, so that the clamping block 52 is flipped through the connecting block 53 to clamp it on the stamping part.

[0054] After the stamped part is positioned and clamped, the air pump 85 is started, and air is sent into the air ring 81 through the air blowing pipe 87 and blown out through the air blowing chamber 88 to form an air curtain at the lens of the spacing sensor 10. At the same time, air is drawn in through the air suction chamber 89 and filtered inside the filter box 82 before returning to the air inlet of the air pump 85. Then the welding equipment is started to perform welding operations on the stamped part.

[0055] When cleaning of the spacing sensor 10 is required, the first motor 62 drives the threaded cylinder 63 to rotate, causing the threaded cylinder 63 to work with the threaded rod 64 to move the sliding frame 65 inward. This causes the sliding frame 65 to move the fixed block 710. During this movement, the sliding pressure block 711 on the fixed block 710 contacts the limit switch 713, activating the extraction pump 75. The pump extracts the cleaning fluid from the storage tank 76 through the extraction pipe 77 and sends it into the nozzle 72 through the feed pipe 74. The cleaning fluid is then sprayed onto the lens of the spacing sensor 10 through the nozzle 73. The sliding frame 65 continues to move until the cleaning paper tape 611 reaches the lens. At this point, the second motor 682 drives the rotating column 681 to rotate. The rotating column 681 drives the synchronous pulley 683 to rotate, which in turn drives another synchronous belt 684 to rotate synchronously via the synchronous belt 684. This causes the other synchronous pulley 683 to drive another rotating column 681 to rotate. The two rotating columns 681 drive two winding drums 685 to rotate, so that one winding drum 685 feeds the cleaning paper tape 611. The cleaning paper tape 611 passes through the lens of the spacing sensor 10 via the fixed guide column 610 and the movable guide column 694, allowing it to wipe the lens. After wiping, the cleaning paper tape 611 is wound and recycled by the other winding drum 685. After cleaning, the first motor 62 reverses, causing the sliding frame 65 to reset, preparing for the next cleaning.

Claims

1. A positioning and clamping mechanism for welding of stamping parts of new energy vehicles, comprising a base, characterized in that, The top of the base is provided with four side supports, the top of the outer two side supports is fixedly provided with a positioning pin, the outside of the four side supports is provided with a clamping unit, the outside of the center support and the middle two side supports is provided with a cleaning mechanism, the top of the base is provided with a spraying mechanism and a blowing mechanism, the outside of the center support and the middle two side supports is fixedly provided with a fixing frame, and the top of the fixing frame is fixedly provided with a distance sensor. The cleaning mechanism comprises a mounting frame fixedly installed on the outside of the center support and the middle two side supports, a first motor fixedly installed on the outside of the mounting frame, a threaded barrel fixedly installed on the output end of the first motor, a threaded rod screwedly installed in the threaded barrel, a sliding frame fixedly installed at the end, away from the threaded barrel, of the threaded rod, two limiting rods fixedly installed on the outside of the sliding frame, two limiting barrels fixedly installed on the inner side of the mounting frame, a driving unit arranged on the outside of the sliding frame, a transmission unit arranged in the sliding frame and extending to the outside, a fixed guide column rotatably installed on the outside of the sliding frame, a guide block fixedly installed on the outside of the sliding frame, and a cleaning paper tape arranged on the outside of the driving unit, the transmission unit and the guide block. The driving unit comprises two rotating columns rotatably installed in the sliding frame and extending to both sides, a second motor fixedly installed on the inner side of the sliding frame, and the output end of the second motor is fixedly installed on one of the rotating columns, a synchronous wheel fixedly installed on the outside of each rotating column, a synchronous belt transmissionally installed between the two synchronous wheels, a winding barrel sleeved on the outside of each rotating column, and a locking nut screwedly installed on the outside of each rotating column. The transmission unit comprises two guide rods fixedly installed in the sliding frame, and two sliding blocks slidingly installed in the sliding frame, a fixed spring fixedly installed between the bottom of each sliding block and the inner wall of the sliding frame, and a movable guide column rotatably installed on the outer side of each sliding block. The spraying mechanism comprises a mounting seat fixedly installed on the inner side of the sliding frame, a nozzle fixedly installed in the mounting seat, a spray head fixedly installed on the nozzle, a liquid storage tank fixedly installed on the top of the base, a suction pump fixedly installed on the top of the liquid storage tank, a feeding pipe fixedly installed on the top of the nozzle at the end, away from the suction pump, of the suction pump, a suction pipe fixedly installed on the bottom of the suction pump, an inlet arranged on the top of the liquid storage tank, a sealing cover screwedly installed on the outside of the inlet, a fixed block fixedly installed on the outside of the sliding frame, a sliding pressing block slidingly installed in the fixed block, a return spring fixedly installed between the top of the sliding pressing block and the inner wall of the fixed block, and a travel switch arranged on the mounting frame.

2. The positioning and clamping mechanism for the stamping and welding of new energy vehicle parts according to claim 1, characterized in that, The clamping unit comprises a cylinder, which is rotatably installed outside the four side supports, and a clamping block rotatably installed at the telescopic end of the cylinder, and a connecting block rotatably installed between the clamping block and the side supports.

3. The positioning and clamping mechanism for the stamping and welding of new energy vehicle parts according to claim 1, characterized in that, The outer wall of the rotating column is provided with a groove, the inner wall of the winding drum is provided with a convex body, and the winding drum is limitingly and slidingly installed outside the rotating column through the cooperation of the convex body and the groove.

4. The positioning and clamping mechanism for the stamping and welding of new energy vehicle parts according to claim 1, characterized in that, The sliding block is a right-angle trapezoidal structure, and the inclined surface faces downward.

5. The positioning and clamping mechanism for the welding of stamping parts of new energy vehicles according to claim 1, characterized in that, The air blowing mechanism comprises an air blowing ring fixedly installed outside the distance sensor, an air port provided at the top of the air blowing ring, a filter box fixedly installed at the top of the base, a filter core movably installed inside the filter box, a connecting pipe fixedly installed at the right side of the filter box, an air pump fixedly installed at the right side of the connecting pipe and at the top of the base, an air suction pipe fixedly installed at the left side of the filter box, the outer portion of the air blowing ring fixedly installed at the end of the air suction pipe away from the filter box, an air blowing pipe fixedly installed at the right side of the air pump, the outer portion of the air blowing ring fixedly installed at the end of the air blowing pipe away from the air pump, and air blowing and suction chambers provided inside the air blowing ring.

6. The positioning and clamping mechanism for the stamping and welding of new energy vehicle parts according to claim 5, characterized in that, The air blowing ring is provided with a partition plate inside, the air blowing pipe is connected to one side of the air blowing chamber, and the air suction pipe is connected to one side of the air suction chamber.

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