Pressure head adjusting device of laser welding machine

Abstract

The utility model relates to a pressure head adjusting device of a laser welding machine. The distance adjusting mechanism comprises a driving motor, a two-way lead screw and lead screw nuts, the driving motor is arranged on the frame body, the two-way lead screw is connected to the output end of the driving motor, and the two sides of the two-way lead screw are matched with the lead screw nuts respectively; the at least two groups of crimping mechanisms are respectively connected to the lead screw nut, each crimping mechanism comprises a pressing cylinder, a pressing bracket and a pressing head, the pressing cylinder is connected with the lead screw nut, the pressing bracket is connected with the output end of the pressing cylinder, and the pressing head is connected to the end part of the pressing bracket. Through the arrangement, the pressing and fixing of the junction box can be realized, so that the welding precision is ensured, and the distance between the pressing heads can be quickly adjusted, so that the device is suitable for junction boxes with different sizes.

Description

TECHNICAL FIELD

[0001] The utility model relates to laser welding technical field especially is a kind of laser welding machine pressure head adjusting device. BACKGROUND

[0002] With the continuous growth of global energy demand and the enhancement of environmental protection consciousness, solar photovoltaic technology as a kind of renewable energy technology has been widely applied and rapidly developed. As the core part of solar photovoltaic system, the production process and the advancement of equipment of photovoltaic module directly affect the efficiency and cost of photovoltaic system. Among them, heterojunction perovskite laminated cell as a kind of new photovoltaic technology with great potential is developing rapidly, and the laser welding process of junction box is a key link in the production process of heterojunction perovskite laminated cell. High-quality laser welding equipment can significantly improve the electrical performance and mechanical strength of photovoltaic module, and thus improve the efficiency of the whole photovoltaic system.

[0003] The traditional laser welding machine pressure head is usually fixed by using the pressure head to fix the junction box before welding when applied to heterojunction perovskite laminated cell. The structure of the traditional laser welding machine pressure head is usually simple, and different sizes of pressure heads need to be disassembled and replaced for different sizes of junction boxes, which leads to poor adaptability and reduces production efficiency. UTILITY MODEL CONTENT

[0004] Therefore, the utility model solves the technical problem that the structure of the laser welding machine pressure head in the prior art is usually simple, different sizes of pressure heads need to be disassembled and replaced for different sizes of junction boxes, which leads to poor adaptability and reduces production efficiency, so as to provide a laser welding machine pressure head adjusting device.

[0005] To solve the above technical problems, the utility model provides a laser welding machine pressure head adjusting device, which comprises:

[0006] a frame body;

[0007] a distance adjusting mechanism, which comprises a driving motor, a bidirectional lead screw and a lead screw nut, the driving motor is arranged on the frame body, the bidirectional lead screw is connected to the output end of the driving motor, and the two sides of the bidirectional lead screw are respectively matched with the lead screw nut;

[0008] a pressure connecting mechanism, which is at least two groups and is respectively connected to the lead screw nut, and comprises a pressure cylinder, a pressure support and a pressure head, the pressure cylinder is connected to the lead screw nut, the pressure support is connected to the output end of the pressure cylinder, and the pressure head is connected to the end of the pressure support.

[0009] In one embodiment of this utility model, the frame is rotatably connected to a first drive wheel and a second drive wheel, the output end of the drive motor is connected to the first drive wheel, the first drive wheel and the second drive wheel are connected by a wound synchronous belt, and the bidirectional lead screw and the second synchronous wheel are coaxially fixed.

[0010] In one embodiment of the present invention, the frame is provided with a sliding pair along a first direction, and the clamping cylinder is movably connected to the frame along the first direction through the sliding pair.

[0011] In one embodiment of this utility model, bearing seats are respectively provided on both sides of the frame along the first direction, and the two ends of the bidirectional lead screw are respectively rotatably connected to the bearing seats.

[0012] In one embodiment of the present invention, the clamping bracket includes: a lifting plate connected to the output end of the clamping cylinder, and a support plate connected to the end of the lifting plate, wherein the pressure head is connected to the support plate.

[0013] In one embodiment of this utility model, the lifting plate is provided with a lifting hole, and the size of the lifting hole along the second direction is larger than the size of the sliding pair.

[0014] In one embodiment of this utility model, the frame is further provided with a pressure sensor, the end of which abuts against the support plate.

[0015] In one embodiment of the present invention, the pressure head includes: a fixed part, an extension part, a pressing part, and a protrusion part. The fixed part is detachably connected to the pressing bracket. One end of the extension part is connected to the fixed part and the other end extends away from the pressing bracket. The pressing part is connected to the end of the fixed part and its plane is perpendicular to the movement direction of the pressing cylinder. The protrusion part is disposed on the end face of the pressing part.

[0016] In one embodiment of this utility model, the pressure head is provided with a damping shaft, and the pressure head is rotatably connected to an air blowing pipe through the damping shaft. The inlet of the air blowing pipe is connected to an external air source.

[0017] In one embodiment of this utility model, the crimping part is provided with a clearance hole, and the output port of the air blowing pipe can be opposite to the clearance hole.

[0018] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0019] This utility model discloses a laser welding machine pressure head adjustment device. When it is necessary to adjust the distance between the pressure heads to accommodate junction boxes of different sizes, the drive motor starts, driving the bidirectional lead screw to rotate. The rotation of the bidirectional lead screw causes the lead screw nuts on both sides to move linearly along the lead screw. Because it is a bidirectional lead screw, the two lead screw nuts will simultaneously move closer or further apart. The movement of the lead screw nuts drives the connected clamping cylinder, clamping bracket, and pressure head as a whole to move, thereby realizing the adjustment of the distance between the pressure heads. When the pressure head moves to the designated position, the clamping cylinder pushes the lifting plate of the clamping bracket downward, which in turn drives the support plate and pressure head downward, so that the pressure head presses on the junction box, realizing the clamping and fixing of the junction box to ensure welding accuracy. It can also quickly adjust the distance between the pressure heads to accommodate junction boxes of different sizes. Attached Figure Description

[0020] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0021] Figure 1 This is a schematic diagram of the pressure head adjustment device of this utility model. Figure 1 ;

[0022] Figure 2 This is a schematic diagram of the pressure head adjustment device of this utility model. Figure 2 ;

[0023] Figure 3 This is a schematic diagram of the pressure head adjustment device of this utility model. Figure 3 ;

[0024] Figure 4 This is a schematic diagram of the structure of the lifting plate of this utility model;

[0025] Figure 5 This is a schematic diagram of the pressure head of this utility model. Figure 1 ;

[0026] Figure 6 This is a schematic diagram of the pressure head of this utility model. Figure 2 .

[0027] Explanation of reference numerals in the accompanying drawings: 1. Frame; 2. Drive motor; 3. Drive wheel; 4. Synchronous belt; 5. Pressing cylinder; 6. Press head; 7. Support plate; 8. Pressure sensor; 9. Sliding pair; 10. Lifting plate; 11. Lifting hole; 12. Fixing part; 13. Damping shaft; 14. Air blowing pipe; 15. Extension part; 16. Pressing part; 17. Clearance hole; 18. Protrusion; 19. Bearing seat. Detailed Implementation

[0028] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention. Example

[0029] Reference Figures 1-6 As shown, the present invention provides a laser welding machine pressure head adjustment device, comprising:

[0030] Frame 1;

[0031] The adjustable distance mechanism includes: a drive motor 2, a bidirectional lead screw, and a lead screw nut. The drive motor 2 is mounted on the frame 1, the bidirectional lead screw is connected to the output end of the drive motor 2, and lead screw nuts are respectively fitted on both sides of the bidirectional lead screw.

[0032] The pressing mechanism comprises at least two sets, each connected to a lead screw nut, and includes: a pressing cylinder 5, a pressing bracket, and a pressing head 6. The pressing cylinder is connected to the lead screw nut, the pressing bracket is connected to the output end of the pressing cylinder, and the pressing head 6 is connected to the end of the pressing bracket.

[0033] The laser welding machine pressure head adjustment device 6 described in this utility model, when it is necessary to adjust the distance between the pressure heads 6 to accommodate junction boxes of different sizes, starts the drive motor 2, which drives the bidirectional lead screw to rotate. The rotation of the bidirectional lead screw causes the lead screw nuts on both sides to move linearly along the lead screw. Because it is a bidirectional lead screw, the two lead screw nuts will move closer or further apart from each other simultaneously. The movement of the lead screw nuts drives the connected clamping cylinder 5, clamping bracket, and pressure head 6 to move as a whole, thereby realizing the adjustment of the distance between the pressure heads 6. When the pressure head 6 moves to the designated position, the clamping cylinder 5 pushes the lifting plate 10 of the clamping bracket to move downward, which in turn drives the support plate 7 and pressure head 6 to move downward, so that the pressure head 6 presses on the junction box, realizing the clamping and fixing of the junction box to ensure welding accuracy.

[0034] Reference Figures 1-3 As shown, the frame 1 is rotatably connected to a first drive wheel 3 and a second drive wheel 3. The output end of the drive motor 2 is connected to the first drive wheel 3. The first drive wheel 3 and the second drive wheel 3 are connected by a wound synchronous belt 4. The bidirectional lead screw and the second synchronous pulley are coaxially fixed. The output end of the drive motor 2 is tightly connected to the first drive wheel 3, which can transmit the power generated by the drive motor 2 to the first drive wheel 3, causing it to rotate. The first drive wheel 3 and the second drive wheel 3 are connected by the wound synchronous belt 4. When the first drive wheel 3 rotates, it will drive the second drive wheel 3 to rotate synchronously by means of the transmission action of the synchronous belt 4.

[0035] Reference Figures 1-3As shown, the frame 1 is provided with a sliding pair 9 along the first direction, and the pressing cylinder is movably connected to the frame 1 along the first direction through the sliding pair 9, providing stable guidance for the movement of the pressing cylinder on the frame 1. The first direction is the left and right direction.

[0036] Reference Figure 3 As shown, the frame 1 is provided with bearing seats 19 on both sides along the first direction. The two ends of the bidirectional lead screw are rotatably connected to the bearing seats 19. One end of the bidirectional lead screw is inserted into the bearing inner ring of one side bearing seat 19 through a tight fit to achieve a reliable connection, so that the bidirectional lead screw can rotate freely under the support of the bearing seat 19. The other end of the bidirectional lead screw is also connected to the bearing inner ring of the other side bearing seat 19 in a precise fit, thereby obtaining stable rotational support.

[0037] Reference Figures 3-4 As shown, the clamping bracket includes: a lifting plate 10 connected to the output end of the clamping cylinder 5, and a support plate 7 connected to the end of the lifting plate 10. The pressure head 6 is connected to the support plate 7. The piston rod of the cylinder extends or retracts, driving the lifting plate 10 connected thereto to move up and down. Since the support plate 7 is connected to the lifting plate 10, the support plate 7 also moves synchronously with the lifting plate 10. The pressure head 6 is connected to the support plate 7, so the pressure head 6 also moves up and down accordingly. When the pressure head 6 approaches the junction box, the clamping cylinder 5 clamps the junction box. The piston rod of the clamping cylinder 5 extends, pushing the lifting plate 10 downward, thereby driving the support plate 7 and the pressure head 6 downward, so that the pressure head 6 presses on the junction box, achieving the clamping and fixing of the junction box.

[0038] Reference Figure 4 As shown, the lifting plate 10 has a lifting hole 11. The dimension of the lifting hole 11 along the second direction is larger than the dimension of the sliding pair 9. The second direction is the vertical direction. When the clamping cylinder drives the lifting plate 10 to move up and down, the sliding pair 9 will also move with the lifting plate 10. The larger dimension of the lifting hole 11 along the second direction provides a certain amount of room for the sliding pair 9 to move on the lifting plate 10. In this way, even if there are some minor positional deviations or wobbling during the movement of the lifting plate 10, the sliding pair 9 can adjust and adapt to a certain extent within the lifting hole 11 without being excessively restricted or obstructed by the lifting plate 10.

[0039] Reference Figure 1As shown, the frame 1 is also equipped with a pressure sensor 8, the end of which abuts against the support plate 7. When the pressure head 6 presses the workpiece through the clamping bracket, the support plate 7 will also experience a corresponding reaction force as the pressure applied by the pressure head 6 to the workpiece changes. Since the end of the pressure sensor 8 abuts against the support plate 7, the pressure sensor 8 can monitor the magnitude of the pressure on the support plate 7 in real time. Through the accurate measurement and feedback of pressure by the pressure sensor 8, the clamping force of the pressure head 6 on the workpiece can be understood in real time and adjusted accordingly.

[0040] Reference Figures 4-6 As shown, the pressure head 6 includes a fixing part 12, an extension part 15, a pressing part 16, and a protrusion part 18. The fixing part 12 is detachably connected to the clamping bracket. One end of the extension part 15 is connected to the fixing part 12, and the other end extends away from the clamping bracket. The pressing part 16 is connected to the end of the fixing part 12, and its plane is perpendicular to the movement direction of the clamping cylinder 5. The protrusion part 18 is disposed on the end face of the pressing part 16. The plane of the pressing part 16 is perpendicular to the movement direction of the clamping cylinder 5, so the pressing part 16 can accurately press against the surface of the junction box in a vertical posture. At the same time, the protrusion part 18 on the end face of the pressing part 16 contacts the surface of the workpiece. By setting corresponding contact points or contact surfaces, the stability of the pressing is enhanced, ensuring smooth welding and stable welding quality. After welding is completed, the clamping cylinder 5 drives the pressure head 6 to rise, releasing the pressing on the workpiece.

[0041] Reference Figure 5 As shown, the pressure head 6 is equipped with a damping shaft 13. The pressure head 6 is rotatably connected to an air blowing pipe 14 via the damping shaft 13. The inlet of the air blowing pipe 14 is connected to an external air source. When performing operations such as air blowing for cleaning or cooling of the welding area, the gas provided by the external air source enters the air blowing pipe 14 through the inlet of the air blowing pipe 14. Since the air blowing pipe 14 is connected to the pressure head 6 via the damping shaft 13, the angle and position of the air blowing pipe 14 can be flexibly adjusted according to actual needs. The damping effect of the damping shaft 13 ensures that the air blowing pipe 14 remains stable after being adjusted to the required angle, and will not easily shake or change angle.

[0042] Reference Figure 5 As shown, the crimping part 16 has a clearance hole 17, and the output port of the air blowing pipe 14 can be aligned with the clearance hole 17. By rotating the air blowing pipe 14, its output port is aligned with the clearance hole 17 of the crimping part 16. At this time, the gas supplied by the external air source enters from the input port of the air blowing pipe 14, passes through the air blowing pipe 14, and is blown out from the output port. It directly acts on the area to be welded through the clearance hole 17, which can clean or cool it. The protrusion 18 forms a flow channel between the crimping part 16 and the junction box, thereby facilitating the airflow.

[0043] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A pressure head adjustment device for a laser welding machine, characterized in that, include: Frame; The adjustable distance mechanism includes: a drive motor, a bidirectional lead screw, and a lead screw nut. The drive motor is mounted on the frame, the bidirectional lead screw is connected to the output end of the drive motor, and lead screw nuts are respectively fitted on both sides of the bidirectional lead screw. A pressing mechanism, comprising at least two sets and respectively connected to a lead screw nut, includes: a pressing cylinder, a pressing bracket, and a pressing head. The pressing cylinder is connected to the lead screw nut, the pressing bracket is connected to the output end of the pressing cylinder, and the pressing head is connected to the end of the pressing bracket.

2. The laser welding machine pressure head adjustment device according to claim 1, characterized in that: The frame is rotatably connected to a first drive wheel and a second drive wheel. The output end of the drive motor is connected to the first drive wheel. The first drive wheel and the second drive wheel are connected by a wound synchronous belt. The bidirectional lead screw and the second synchronous wheel are coaxially fixed.

3. The laser welding machine pressure head adjustment device according to claim 1, characterized in that: The frame is provided with a sliding pair along the first direction, and the clamping cylinder is movably connected to the frame along the first direction through the sliding pair.

4. The laser welding machine pressure head adjustment device according to claim 1, characterized in that: The frame is provided with bearing seats on both sides along the first direction, and the two ends of the bidirectional lead screw are rotatably connected to the bearing seats.

5. The laser welding machine pressure head adjustment device according to claim 1, characterized in that: The clamping bracket includes: a lifting plate connected to the output end of the clamping cylinder, and a support plate connected to the end of the lifting plate, with the pressure head connected to the support plate.

6. The laser welding machine pressure head adjustment device according to claim 5, characterized in that: The lifting plate has a lifting hole, and the size of the lifting hole along the second direction is larger than the size of the sliding pair.

7. The laser welding machine pressure head adjustment device according to claim 5, characterized in that: The frame is also equipped with a pressure sensor, the end of which abuts against the support plate.

8. The laser welding machine pressure head adjustment device according to claim 1, characterized in that: The pressure head includes a fixed part, an extension part, a pressing part, and a protrusion part. The fixed part is detachably connected to the pressing bracket. One end of the extension part is connected to the fixed part and the other end extends away from the pressing bracket. The pressing part is connected to the end of the fixed part and its plane is perpendicular to the movement direction of the pressing cylinder. The protrusion part is provided on the end face of the pressing part.

9. A laser welding machine pressure head adjustment device according to claim 8, characterized in that: The pressure head is equipped with a damping shaft, and the pressure head is rotatably connected to an air blowing pipe via the damping shaft. The inlet of the air blowing pipe is connected to an external air source.

10. A laser welding machine pressure head adjustment device according to claim 9, characterized in that: The crimping part is provided with a clearance hole, and the output port of the air blowing pipe can be aligned with the clearance hole.

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