New energy automobile lamp part welding equipment

Abstract

The invention relates to the technical field of automobile part manufacturing, in particular to new energy automobile lamp part welding equipment which comprises a back plate, a laser device is fixedly connected to the top of the back plate, supporting wheels are rotatably mounted at the bottom of the back plate, and a second pipe shaft is rotatably mounted on one side of the back plate; the end of the second pipe shaft is coaxially and fixedly connected with a circular shell used for containing high-pressure gas, the second pipe shaft communicates with the shell, and a plurality of cleaning cotton pads are fixedly connected to the outer wall of the shell at equal intervals. In the welding process, dust impurities and tiny water drops on the surface of the lens can be cleaned online in real time, so that the situation that the light transmittance of the lens is reduced, and consequently the welding efficiency is reduced is avoided. Besides, the pressure of the rolling wheel on the light transmitting mirror is kept in a constant state through cooperation of a pressure release valve and a third cylinder body, bubbles generated due to temperature rise in the welding process are extracted through the rolling wheel, and therefore the combination degree between the light distributing mirror and the reflecting mirror in the welding process is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of automobile parts manufacturing, and in particular to welding equipment for new energy automobile headlight parts. Background Art

[0002] Laser welding technology is a technology that uses the heat generated by the laser beam to melt the plastic contact surface and then bond thermoplastic sheets, films or molded parts together. The advantages of laser welding for plastic parts welding include: precise and firm welding, good sealing, airtightness and watertightness, and less resin degradation and debris during welding. Compared with other welding methods, laser welding can greatly reduce the vibration stress and thermal stress of the product.

[0003] As car lights have high requirements for sealing and aesthetics, laser welding is currently a more commonly used welding technology in car lights welding. Figure 1 As shown in the figure, the car headlight is mainly composed of a light distribution mirror, a reflector and a bulb. When laser welding is performed, the light distribution mirror is matched with the reflector, and external pressure is applied to reduce the gap between the light distribution mirror and the reflector. The laser is started, and the laser generated by the laser passes through the transparent light distribution mirror and irradiates the reflector. The reflector is heated and melted by the laser to bond the light distribution mirror and the reflector together. However, in the actual processing process, dust impurities in the air will adhere to the surface of the light distribution mirror on the production line, resulting in a decrease in the transmittance of the light distribution mirror. After the transmittance decreases, the energy of the laser itself will be greatly lost in the process of passing through the light transmission mirror, resulting in an increase in the time required to melt the reflector, which reduces work efficiency. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcoming of low welding efficiency in the prior art and to propose a welding device for headlight parts of new energy vehicles.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A welding device for headlight parts of a new energy vehicle is designed, comprising a back plate, a laser is fixedly connected to the top of the back plate, a supporting wheel is rotatably installed at the bottom of the back plate, a second tube shaft is rotatably installed on one side of the back plate, a circular shell is coaxially fixedly connected to the end of the second tube shaft for accommodating high-pressure gas, the second tube shaft is connected to the shell, a plurality of cleaning cotton pads are fixedly connected at equal intervals on the outer wall of the shell, an air outlet is opened through the outer wall of the shell to accommodate the gas in the shell to discharge, a circular bracket is fixedly connected to the surface of the back plate, the bracket is sleeved on the second tube shaft, a moving wheel is rotatably installed on the bracket, a second end face gear is fixedly connected to the back of the moving wheel, a first end face gear is fixedly connected to the surface of the second tube shaft, a connecting shaft is fixedly connected in the bracket, a transmission gear is rotatably installed on the connecting shaft, the first end face gear, the second end face gear and the transmission gear cooperate with each other, and a driving structure is provided on the surface of the back plate to drive the second tube shaft to rotate.

[0007] Preferably, the driving structure comprises a driving wheel, which is rotatably mounted on the surface of the back plate, and a driven wheel is fixedly connected to the surface of the second tube shaft, and the driving wheel cooperates with the driven wheel.

[0008] Preferably, a boosting structure is provided on the back plate to input gas into the second tube shaft, and the boosting structure includes a first cylinder body, a second cylinder body and a plunger, both of the first cylinder body and the second cylinder body are vertically fixed to the surface of the back plate, one end of the plunger is slidably fitted in the first cylinder body, and the other end of the plunger is slidably fitted in the second cylinder body, and the first pipe is connected to the bottom of the first cylinder body, a first one-way valve is provided on the first pipe to allow air to flow into the first cylinder body, and a second one-way valve is provided inside the plunger to accommodate the internal air of the first cylinder body to flow into the second cylinder body, and a pressure dividing chamber is connected to one side of the second cylinder body, a joint is installed at the bottom of the pressure dividing chamber, and the end of the second tube shaft is rotatably connected to the joint.

[0009] Preferably, a sliding block is fixedly connected to the end surface of the driving wheel, a connecting piece is fixedly connected to the middle part of the plunger, a sliding groove is fixedly connected to the connecting piece, and the sliding block is slidably fitted in the sliding groove.

[0010] Preferably, a first tube shaft is rotatably mounted on the bottom of the back plate, a roller with a thin-walled structure is rotatably mounted on one end of the first tube shaft, the other end of the first tube shaft is rotatably connected to the filter chamber, the first tube shaft is connected to the roller, an air inlet is opened on the roller to accommodate air entering the first tube shaft, and the filter chamber is filled with a filter element.

[0011] Preferably, the first pipe is communicated with the filter chamber.

[0012] Preferably, a slot is provided through the back plate, a connecting block is slidably fitted in the slot, and a rolling wheel is rotatably mounted on the connecting block.

[0013] Preferably, a piston is vertically fixed on the connecting block, a third cylinder is fixed on the surface of the back plate, the third cylinder is connected to the second cylinder through a second pipe, a pressure relief valve is installed on the second pipe, and the piston is slidably fitted in the third cylinder.

[0014] The invention proposes a welding device for new energy vehicle headlight parts, which has the beneficial effect that dust impurities and fine water droplets on the surface of the light distribution mirror can be cleaned online in real time during the welding process to prevent the light distribution mirror from reducing its transmittance and thus reducing welding efficiency. In addition, the pressure of the roller on the light transmission mirror is kept constant by cooperating with the pressure relief valve and the third cylinder body, and the bubbles generated by the temperature increase during the welding process are extracted by the roller, thereby ensuring the bonding degree between the light distribution mirror and the reflector during the welding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a car lamp.

[0016] Figure 2 A schematic diagram of the structure of a welding device for new energy vehicle headlight parts proposed by the present invention Figure 1 .

[0017] Figure 3 A schematic diagram of the structure of a welding device for new energy vehicle headlight parts proposed by the present invention Figure 2 .

[0018] Figure 4 This is a front view of a new energy vehicle headlight component welding device proposed by the present invention.

[0019] Figure 5 A schematic diagram of the structure of a welding device for new energy vehicle headlight parts proposed by the present invention Figure 3 .

[0020] Figure 6 This is a rear view of a new energy vehicle headlight component welding device proposed by the present invention.

[0021] Figure 7 A welding device for a new energy vehicle headlight component proposed by the present invention Figure 6 AA section view.

[0022] Figure 8 A welding device for a new energy vehicle headlight component proposed by the present invention Figure 6 Middle BB section.

[0023] Fig. 9 A welding device for a new energy vehicle headlight component proposed by the present invention Figure 8 Enlarged view of point E in the middle.

[0024] Fig.10 This is a side view of a new energy vehicle headlight component welding device proposed by the present invention.

[0025] Fig.11 A welding device for a new energy vehicle headlight component proposed by the present invention Fig.10 Mid-CC section view.

[0026] Fig.12 A welding device for a new energy vehicle headlight component proposed by the present invention Fig.10 Middle DD section view.

[0027] In the figure: 1, back plate; 2, laser; 3, notch; 4, connecting block; 5, rolling wheel; 6, piston; 7, third cylinder; 8, roller; 801, air inlet; 9, first pipe axis; 10, filter chamber; 11, filter element; 12, first pipeline; 13, first one-way valve; 14, first cylinder; 15, second cylinder; 16, second pipeline; 17, pressure relief valve; 18, plunger; 19, second one-way valve; 20, pressure dividing chamber; 21, joint; 22, second pipe axis; 23, bracket; 24, moving wheel; 25, shell; 26, cleaning cotton pad; 27, air outlet; 28, supporting wheel; 29, second end face gear; 30, transmission gear; 31, connecting shaft; 32, connecting piece; 33, slide groove; 34, driving wheel; 35, slider; 36, driven wheel; 37, first end face gear. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0029] Reference Figure 2-12A welding device for a new energy vehicle headlight component comprises a back plate 1, a laser 2 is fixedly connected to the top of the back plate 1, a support wheel 28 is rotatably installed at the bottom of the back plate 1, a second tube shaft 22 is rotatably installed on one side of the back plate 1, a circular shell 25 is coaxially fixedly connected to the end of the second tube shaft 22 for accommodating high-pressure gas, the second tube shaft 22 is connected to the shell 25, a plurality of cleaning cotton pads 26 are fixedly connected to the outer wall of the shell 25 at equal intervals, and an air outlet 27 is opened through the outer wall of the shell 25 to accommodate the gas in the shell 25 to discharge A circular bracket 23 is fixedly connected to the surface of the back plate 1. The bracket 23 is sleeved on the second tube shaft 22. A moving wheel 24 is rotatably installed on the bracket 23. A second end face gear 29 is fixedly connected to the back of the moving wheel 24. A first end face gear 37 is fixedly connected to the surface of the second tube shaft 22. A connecting shaft 31 is fixedly connected inside the bracket 23. A transmission gear 30 is rotatably installed on the connecting shaft 31. The first end face gear 37, the second end face gear 29 and the transmission gear 30 cooperate with each other. A driving structure is provided on the surface of the back plate 1 to drive the second tube shaft 22 to rotate. The driving structure includes a driving wheel 34, which is rotatably installed on the surface of the back plate 1. A driven wheel 36 is fixedly connected to the surface of the second tube shaft 22. The driving wheel 34 cooperates with the driven wheel 36.

[0030] When welding the automobile lamp, the portions to be welded at the edges of the light distribution mirror and the reflector are fed between the support wheel 28 and the moving wheel 24 , and are clamped by the support wheel 28 and the moving wheel 24 .

[0031] An external motor on the back panel 1 drives the driving wheel 34 to rotate. The rotation of the driving wheel 34 will drive the second tube shaft 22 to rotate through the driven wheel 36. The rotation of the second tube shaft 22 will drive the first end face gear 37 to rotate. The first end face gear 37 drives the second end face gear 29 to rotate through the transmission gear 30. The rotation of the second end face gear 29 will drive the moving wheel 24 to rotate. During the rotation of the moving wheel 24, the back panel 1 will move along the part of the headlight to be welded, so that the laser 2 on the top of the back panel 1 can weld it.

[0032] During the rotation of the moving wheel 24 and the movement of the part of the headlight to be welded, the second tube shaft 22 will drive the shell 25 to rotate, and the rotation direction of the shell 25 is opposite to the rotation direction of the moving wheel 24. During the rotation of the shell 25, the cleaning cotton pad 26 on the surface will be driven to rotate to wipe the surface of the photometric lens. During the rotation of the shell 25, the shell 25 will also emit a high-speed airflow through the air outlet 27 to blow away the dust and impurities attached to the surface of the photometric lens, so as to prevent the dust and impurities attached to the surface of the photometric lens from affecting the welding efficiency.

[0033] The back plate 1 is provided with a pressurizing structure to input gas into the second pipe shaft 22. The pressurizing structure includes a first cylinder 14, a second cylinder 15 and a plunger 18. Both the first cylinder 14 and the second cylinder 15 are vertically fixed to the surface of the back plate 1. One end of the plunger 18 is slidably fitted in the first cylinder 14, and the other end of the plunger 18 is slidably fitted in the second cylinder 15. The bottom of the first cylinder 14 is connected to the first pipeline 12. The first pipeline 12 is provided with a first check valve 13 to allow air to flow into the first cylinder. The air in the first cylinder 14 flows in the second cylinder 15, and a second one-way valve 19 is provided inside the plunger 18 to accommodate the air in the first cylinder 14 to flow into the second cylinder 15. A pressure dividing chamber 20 is connected to one side of the second cylinder 15, and a joint 21 is installed at the bottom of the pressure dividing chamber 20. The end of the second pipe shaft 22 is rotatably connected to the joint 21. A slider 35 is fixedly connected to the end surface of the driving wheel 34, and a connecting piece 32 is fixedly connected to the middle of the plunger 18. A slide groove 33 is fixedly connected to the connecting piece 32, and the slider 35 is slidably fitted in the slide groove 33.

[0034] During the rotation of the driving wheel 34, the driving wheel 34 will drive the slide groove 33 to perform linear reciprocating motion in the vertical direction through the slider 35. The slide groove 33 drives the plunger 18 to slide back and forth in the first cylinder body 14 and the second cylinder body 15 through the connecting piece 32. Due to the presence of the first one-way valve 13 and the second one-way valve 19, the plunger 18 will draw the air in the first cylinder body 14 into the second cylinder body 15 during the back-and-forth sliding process, so as to increase the internal air pressure of the second cylinder body 15.

[0035] Since the second cylinder body 15 is connected to the pressure dividing chamber 20, the air pressure in the pressure dividing chamber 20 will also increase accordingly. The pressure dividing chamber 20 is connected to the shell 25 through the joint 21 and the second pipe shaft 22. The air pressure in the shell 25 will also increase accordingly, so that the shell 25 blows out high-speed airflow through the outlet 27.

[0036] A first tube shaft 9 is rotatably installed at the bottom of the back plate 1, a roller 8 with a thin-walled structure is rotatably installed at one end of the first tube shaft 9, the other end of the first tube shaft 9 is rotatably connected to the filter chamber 10, the first tube shaft 9 is communicated with the roller 8, an air inlet 801 is opened on the roller 8 to accommodate air entering the first tube shaft 9, the filter chamber 10 is filled with a filter element 11, and the first pipe 12 is connected to the filter chamber 10.

[0037] Since the air in the first cylinder 14 is continuously sucked into the second cylinder 15, the first cylinder 14 will be continuously in a negative pressure state. The first cylinder 14 will suck the filter chamber 10 through the first pipe 12, so that the filter chamber 10 is in a negative pressure state. The filter chamber 10 is connected with the roller 8 through the first tube shaft 9, and the roller 8 will also be in a negative pressure state. During the rotation of the roller 8, suction will be performed from the bottom of the part to be welded through the air inlet 801 to suck out the bubbles generated by laser heating between the photometric mirror and the reflector, thereby improving the bonding degree of the two.

[0038] The sucked gas enters the filter chamber 10 , is filtered by the filter element in the filter chamber 10 , and then is sent into the first cylinder body 14 .

[0039] A slot 3 is provided through the back plate 1, a connecting block 4 is slidably fitted in the slot 3, a rolling wheel 5 is rotatably mounted on the connecting block 4, a piston 6 is vertically fixed to the connecting block 4, a third cylinder body 7 is fixedly connected to the surface of the back plate 1, the third cylinder body 7 is connected to the second cylinder body 15 through a second pipe 16, a pressure relief valve 17 is mounted on the second pipe 16, and the piston 6 is slidably fitted in the third cylinder body 7.

[0040] The reciprocating motion of the plunger 18 continuously charges the second cylinder 15, and the pressure enters the third cylinder 7 through the second pipe 16. The piston 6 in the third cylinder 7 applies downward pressure to the connecting block 4 under the action of pressure, and the connecting block 4 applies pressure to the photometric mirror through the rolling wheel 5, thereby applying force to both the photometric mirror and the reflector in a welded state, so as to further improve the bonding degree between the two.

[0041] When the pressure in the second cylinder 15 and the third cylinder 7 is too high, the pressure relief valve 17 will relieve the pressure thereon to prevent the pressure in the third cylinder 7 from being too high and causing the roller wheel 5 to crush the photometric lens.

[0042] Working principle and workflow:

[0043] When welding the car lamp, the parts to be welded at the edges of the light distribution mirror and the reflector are combined together, the front of the parts to be welded is located between the supporting wheel 28 and the moving wheel 24, and the rear of the parts to be welded is located between the roller 8 and the rolling wheel 5.

[0044] The external motor on the back plate 1 is started to rotate the driving wheel 34 .

[0045] The rotation of the driving wheel 34 will drive the second tube shaft 22 to rotate through the driven wheel 36. The rotation of the second tube shaft 22 will drive the first end face gear 37 to rotate. The first end face gear 37 drives the second end face gear 29 to rotate through the transmission gear 30. The rotation of the second end face gear 29 will drive the moving wheel 24 to rotate. During the rotation of the moving wheel 24, the back plate 1 will move along the part of the headlight to be welded, so that the laser 2 on the top of the back plate 1 can weld it.

[0046] During the rotation of the moving wheel 24 and the movement of the part of the headlight to be welded, the second tube shaft 22 will drive the shell 25 to rotate, and the rotation direction of the shell 25 is opposite to the rotation direction of the moving wheel 24. During the rotation of the shell 25, the cleaning cotton pad 26 on the surface will be driven to rotate to wipe the surface of the photometric lens. During the rotation of the shell 25, the shell 25 will also emit a high-speed airflow through the air outlet 27 to blow away the dust and impurities attached to the surface of the photometric lens, so as to prevent the dust and impurities attached to the surface of the photometric lens from affecting the welding efficiency.

[0047] During the rotation of the driving wheel 34, the driving wheel 34 will drive the slide groove 33 to perform linear reciprocating motion in the vertical direction through the slider 35. The slide groove 33 drives the plunger 18 to slide back and forth in the first cylinder body 14 and the second cylinder body 15 through the connecting piece 32. Due to the presence of the first one-way valve 13 and the second one-way valve 19, the plunger 18 will draw the air in the first cylinder body 14 into the second cylinder body 15 during the back-and-forth sliding process, so as to increase the internal air pressure of the second cylinder body 15.

[0048] Since the second cylinder 15 is connected to the pressure dividing chamber 20, the air pressure in the pressure dividing chamber 20 will also increase accordingly. The pressure dividing chamber 20 is connected to the shell 25 through the joint 21 and the second tube shaft 22. The air pressure in the shell 25 will also increase accordingly, so that the shell 25 blows out a high-speed airflow through the air outlet 27 to dry the photosensitive lens to prevent the fine water droplets attached to the surface of the photosensitive lens from causing diffuse reflection of the laser.

[0049] Since the air in the first cylinder 14 is continuously sucked into the second cylinder 15, the first cylinder 14 will be continuously in a negative pressure state. The first cylinder 14 will suck the filter chamber 10 through the first pipe 12, so that the filter chamber 10 is in a negative pressure state. The filter chamber 10 is connected with the roller 8 through the first tube shaft 9, and the roller 8 will also be in a negative pressure state. During the rotation of the roller 8, suction will be performed from the bottom of the part to be welded through the air inlet 801 to suck out the bubbles generated by laser heating between the photometric mirror and the reflector, thereby improving the bonding degree of the two.

[0050] The sucked gas enters the filter chamber 10 , is filtered by the filter element in the filter chamber 10 , and then is sent into the first cylinder body 14 .

[0051] The reciprocating motion of the plunger 18 continuously charges the second cylinder 15, and the pressure enters the third cylinder 7 through the second pipe 16. The piston 6 in the third cylinder 7 applies downward pressure to the connecting block 4 under the action of pressure, and the connecting block 4 applies pressure to the photometric mirror through the rolling wheel 5, thereby applying force to both the photometric mirror and the reflector in a welded state, so as to further improve the bonding degree between the two.

[0052] When the pressure in the second cylinder 15 and the third cylinder 7 is too high, the pressure relief valve 17 will relieve the pressure thereon to prevent the pressure in the third cylinder 7 from being too high and causing the roller wheel 5 to crush the photometric lens.

[0053] The automobile lamp welding technology provided by the present invention can clean dust impurities and fine water droplets on the surface of the light distribution mirror in real time during the welding process, so as to prevent the light transmittance of the light distribution mirror from decreasing and thus reducing the welding efficiency. In addition, the pressure of the rolling wheel 5 on the light transmission mirror is kept constant by cooperating with the pressure relief valve 17 and the third cylinder 7, and the bubbles generated by the temperature increase during the welding process are extracted by the roller 8, so as to ensure the bonding degree between the light distribution mirror and the reflector during the welding process.

[0054] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A welding device for new energy vehicle headlight parts, comprising a back plate (1), a laser (2) fixedly connected to the top of the back plate (1), and a support wheel (28) rotatably mounted on the bottom of the back plate (1), characterized in that: A second tube shaft (22) is rotatably mounted on one side of the back plate (1); a circular shell (25) is coaxially fixedly connected to the end of the second tube shaft (22) for containing high-pressure gas; the second tube shaft (22) is connected to the shell (25); a plurality of cleaning cotton pads (26) are fixedly connected at equal intervals on the outer wall of the shell (25); an air outlet (27) is provided through the outer wall of the shell (25) for accommodating the gas in the shell (25) to be discharged; a circular bracket (23) is fixedly connected to the surface of the back plate (1); the bracket (23) is sleeved on the second tube shaft (22) ), a moving wheel (24) is rotatably mounted on the bracket (23), a second end face gear (29) is fixedly connected to the back of the moving wheel (24), a first end face gear (37) is fixedly connected to the surface of the second tube shaft (22), a connecting shaft (31) is fixedly connected inside the bracket (23), a transmission gear (30) is rotatably mounted on the connecting shaft (31), the first end face gear (37), the second end face gear (29) and the transmission gear (30) are matched with each other, and a driving structure is provided on the surface of the back plate (1) for driving the second tube shaft (22) to rotate.

2. The welding equipment for new energy vehicle lamp parts according to claim 1 is characterized in that: The driving structure comprises a driving wheel (34) which is rotatably mounted on the surface of the back plate (1); a driven wheel (36) is fixedly connected to the surface of the second tube shaft (22); the driving wheel (34) cooperates with the driven wheel (36).

3. The welding equipment for new energy vehicle lamp parts according to claim 2 is characterized in that: The back plate (1) is provided with a pressurizing structure for inputting gas into the second pipe shaft (22), the pressurizing structure comprising a first cylinder body (14), a second cylinder body (15) and a plunger (18), the first cylinder body (14) and the second cylinder body (15) are both vertically fixed to the surface of the back plate (1), one end of the plunger (18) is slidably fitted in the first cylinder body (14), and the other end of the plunger (18) is slidably fitted in the second cylinder body (15), and is connected to the first pipeline at the bottom of the first cylinder body (14). (12), a first one-way valve (13) is provided on the first pipeline (12) to allow air to flow into the first cylinder (14), a second one-way valve (19) is provided inside the plunger (18) to allow the air inside the first cylinder (14) to flow into the second cylinder (15), one side of the second cylinder (15) is connected to a pressure dividing chamber (20), a joint (21) is installed at the bottom of the pressure dividing chamber (20), and the end of the second pipe shaft (22) is rotatably connected to the joint (21).

4. The welding equipment for new energy vehicle lamp parts according to claim 3 is characterized in that: A slider (35) is fixedly connected to the end surface of the driving wheel (34), a connecting piece (32) is fixedly connected to the middle of the plunger (18), a sliding groove (33) is fixedly connected to the connecting piece (32), and the slider (35) is slidably fitted in the sliding groove (33).

5. The welding equipment for new energy vehicle lamp parts according to claim 4 is characterized in that: A first tube shaft (9) is rotatably mounted on the bottom of the back plate (1); a roller (8) with a thin-walled structure is rotatably mounted on one end of the first tube shaft (9); the other end of the first tube shaft (9) is rotatably connected to a filter chamber (10); the first tube shaft (9) is connected to the roller (8); an air inlet (801) is provided on the roller (8) to accommodate air entering the first tube shaft (9); and a filter element (11) is filled in the filter chamber (10).

6. The welding equipment for new energy vehicle lamp parts according to claim 5 is characterized in that: The first pipe (12) is in communication with the filter chamber (10).

7. The welding equipment for new energy vehicle lamp parts according to claim 6 is characterized in that: A slot (3) is provided through the back plate (1), a connecting block (4) is slidably fitted in the slot (3), and a rolling wheel (5) is rotatably mounted on the connecting block (4).

8. The welding equipment for new energy vehicle lamp parts according to claim 7 is characterized in that: A piston (6) is vertically fixed on the connecting block (4), a third cylinder body (7) is fixed on the surface of the back plate (1), the third cylinder body (7) is connected to the second cylinder body (15) through a second pipe (16), a pressure relief valve (17) is installed on the second pipe (16), and the piston (6) is slidably fitted in the third cylinder body (7).

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