Lightweight vehicle body laser welding heat affected zone structure temperature regulation and control device

Abstract

The invention relates to the technical field of welding auxiliary equipment, in particular to a light-weight vehicle body laser welding heat affected zone tissue temperature regulation and control device which comprises a base, a supporting block is fixed to the upper surface of the base, a groove is formed in the outer wall of one side of the supporting block, and a first threaded rod is rotationally arranged on the inner wall of the groove; a first nut is arranged on the outer wall of the first threaded rod in a threaded mode, a fixing block is fixed to the outer wall of the first nut, one end of the fixing block extends out of the groove and is fixedly provided with an extension table, a temperature detector is fixed to the upper surface of the extension table, an air spraying pipe is fixed to the lower surface of the extension table, and an annular block is fixed to the outer wall of the air spraying pipe; impurities can be intercepted and waste gas can be recycled through a gas suction hole and a filter block, a connecting rod is linked with a cleaning block to automatically clean the impurities, disassembly and maintenance by workers are not needed, a titanium wire gas spraying pipe is matched with a conical nozzle to accurately spray gas for cooling, a temperature detector is used for real-time regulation and control, dynamic temperature control and cleaning are achieved, and the welding quality is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of welding auxiliary equipment, and in particular to a device for controlling the temperature of a heat-affected zone in laser welding of a lightweight vehicle body. Background Art

[0002] As the automotive industry develops towards lightweight and high efficiency, laser welding technology has become a key process in lightweight car body manufacturing due to its advantages such as fast welding speed, small deformation and high joint strength. Car body laser welding technology is an advanced welding technology that uses a high-energy-density laser beam as a heat source and achieves efficient and precise welding of metal materials by precisely controlling the focus and movement of the laser.

[0003] The high temperature generated during laser welding can cause problems such as coarse grains and uneven structure in the heat-affected zone, seriously affecting the mechanical properties and durability of the vehicle body. Traditional temperature control methods mostly rely on single air-cooling or water-cooling equipment, but the spatter and smoke generated during welding pollute the working environment and may also interfere with the normal operation of temperature monitoring and control equipment, resulting in a significant reduction in temperature control effect. In order to solve the above-mentioned problems, the present invention proposes a temperature control device for the heat-affected zone structure of lightweight vehicle body laser welding. Summary of the Invention

[0004] In response to the problems in the prior art, the present invention provides a device for controlling the temperature of the heat-affected zone of a lightweight vehicle body during laser welding.

[0005] The technical solution adopted by the present invention to solve its technical problem is: a temperature control device for the heat-affected zone of a lightweight car body laser welding, comprising a base, a support block fixed to the upper surface of the base, a groove formed on one side outer wall of the support block, a first threaded rod rotatably provided on the inner wall of the groove, a first nut threaded on the outer wall of the first threaded rod, a fixing block fixed on the outer wall of the first nut, one end of the fixing block extending outside the groove and provided with a movable groove, a second threaded rod rotatably connected to the inner wall of the movable groove, a second nut threaded on the outer wall of the second threaded rod, a movable block fixedly connected to the outer wall of one side of the second nut, and an extension platform fixedly connected to one end of the movable block; A temperature detector is fixed on the upper surface of the extension platform, and an air jet is fixed on the lower surface of the extension platform. An annular block is fixed on the outer wall of the air jet, a circular tube is slid on the inner wall of one end of the air jet, and a conical nozzle is fixed on one end of the circular tube. A slide groove is provided through the inner wall of one end of the air jet, and an annular block is slid on the inner wall of the slide groove. The annular block is fixedly connected to the circular tube, a connecting hose is fixed on the other end of the air jet, and a sealing ring is fixed on one end of the circular tube.

[0006] Specifically, an air suction cavity is opened through the interior of the annular block, and an air suction hole is opened through the outer wall of the annular block in a cross shape, and the air suction hole penetrates into the air suction cavity, and a filter block slides on the inner wall of the air suction hole, and a connecting hole is opened through the inner wall of one side of the air suction hole, and the connecting hole extends through and extends to the outside of the annular block and a connecting rod slides, and one end of the connecting rod is fixedly connected to the conical nozzle.

[0007] Specifically, the connecting rod extends into the air suction hole and is fixed with a cleaning slider. One end of the cleaning slider is provided with a cleaning groove and a triangular cleaning block slides thereon. The outer wall of one side of the cleaning slider is symmetrical and is fixed with an arc-shaped push block. The outer wall of the filter block is equidistantly penetrated with arc-shaped holes, and the arc-shaped push block extends into the arc-shaped hole.

[0008] Specifically, a first drive motor is fixed on the upper surface of the support block, and the output end of the first drive motor is fixedly connected to the first threaded rod through a coupling. One end of the fixed block is fixedly connected to a second drive motor, and the output end of the second drive motor is fixedly connected to the second threaded rod through a coupling.

[0009] Specifically, a first spring is fixed to the inner wall of the sliding groove, and the other end of the first spring is fixedly connected to the circular ring block.

[0010] Specifically, a second spring is fixed to the inner wall of the air suction hole, and the other end of the second spring is fixedly connected to the filter block.

[0011] Specifically, an air suction pipe is fixed to the inner wall of the air suction cavity, and the air suction pipe passes through to the outside of the annular block.

[0012] Specifically, a third spring is fixed to the inner wall of the cleaning tank, and the other end of the third spring is fixedly connected to the triangular cleaning block.

[0013] Beneficial effects of the present invention: The present invention describes a temperature control device for the heat-affected zone tissue of a lightweight car body laser welding. The first drive motor is started to drive the first threaded rod to rotate. The first threaded rod drives the fixed block and the extension platform to move through the first nut to adjust the height of the jet pipe. The jet pipe ejects low-temperature gas to cool the high-temperature zone. The intake pipe inhales the cooled exhaust gas to form a circulation. The filter block filters impurities in the exhaust gas. When the jet pipe ejects air, the conical nozzle pushes the cleaning slider and the triangular cleaning block to move. The triangular cleaning block cleans the filter block. Impurities can be intercepted and the exhaust gas can be recovered through the intake hole and the filter block. The connecting rod links the cleaning block to automatically clean impurities without the need for staff to disassemble and maintain. The titanium wire jet pipe is combined with the conical nozzle to accurately eject air and cool down, and a temperature detector is used for real-time control to achieve dynamic temperature control and cleaning, thereby improving welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below with reference to the accompanying drawings and examples.

[0015] Figure 1 This is a schematic diagram of the front view of a temperature control device for heat-affected zone tissue in laser welding of a lightweight vehicle body provided by the present invention; Figure 2 This is a schematic diagram of the front view of the extended platform structure of the device for controlling the temperature of the heat-affected zone of a lightweight car body laser welding provided by the present invention; Figure 3 This is a schematic diagram of the front view structure of the annular block of the temperature control device for the heat-affected zone of a lightweight car body laser welding provided by the present invention; Figure 4 A schematic diagram of the conical nozzle moving structure of a temperature control device for heat-affected zone tissue in laser welding of a lightweight vehicle body provided by the present invention; Figure 5 This is a schematic diagram of the upward-view structure of a conical nozzle of a temperature control device for heat-affected zone tissue in laser welding of a lightweight vehicle body provided by the present invention; Figure 6 This is a schematic diagram of the installation position structure of the filter block of a temperature control device for heat-affected zone tissue in laser welding of a lightweight vehicle body provided by the present invention; Figure 7 A schematic cross-sectional view of a ring block structure of a temperature control device for heat-affected zone tissue in laser welding of a lightweight vehicle body provided by the present invention; Figure 8 A schematic diagram of the front view structure of a cleaning slider of a temperature control device for heat-affected zone tissue in laser welding of a lightweight vehicle body provided by the present invention; Figure 9 A schematic cross-sectional view of a cleaning slider in a temperature control device for heat-affected zone tissue in laser welding of a lightweight vehicle body provided by the present invention; Figure 10 A schematic diagram of the front view structure of a filter block in a temperature control device for heat-affected zone tissue in laser welding of a lightweight vehicle body provided by the present invention; Figure 11 This is a schematic diagram of the cross-sectional structure of a fixed block of a temperature control device for heat-affected zone tissue in laser welding of a lightweight vehicle body provided by the present invention.

[0016] In the figure: 1. base; 2. support block; 3. first threaded rod; 4. fixed block; 5. extension platform; 6. temperature detector; 7. air jet tube; 8. ring block; 9. circular tube; 10. conical nozzle; 11. ring block; 12. connecting hose; 13. suction chamber; 14. suction hole; 15. filter block; 16. connecting rod; 17. cleaning slider; 18. triangular cleaning block; 19. arc-shaped push block; 20. arc-shaped hole; 21. first drive motor; 22. first spring; 23. second spring; 24. suction pipe; 25. sealing ring; 26. third spring; 27. second threaded rod; 28. moving block; 29. ​​second drive motor. DETAILED DESCRIPTION

[0017] 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.

[0018] like Figures 1-11 As shown, the present invention provides the following technical solutions: Embodiment 1: A device for controlling the temperature of the heat-affected zone of a laser welded lightweight vehicle body, comprising a base 1, a support block 2 being fixed to the upper surface of the base 1, a groove being provided on one outer wall of the support block 2, a first threaded rod 3 being rotatably provided on the inner wall of the groove, a first nut being threaded on the outer wall of the first threaded rod 3, a fixing block 4 being fixed on the outer wall of the first nut, one end of the fixing block 4 extending outside the groove and provided with a movable groove, a second threaded rod 27 being rotatably connected to the inner wall of the movable groove, a second nut being threaded on the outer wall of the second threaded rod 27, a movable block 28 being fixedly connected to the outer wall of one side of the second nut, and an extension platform 5 being fixedly connected to one end of the movable block 28; A temperature detector 6 is fixed to the upper surface of the extension platform 5, and an air jet 7 is fixed to the lower surface of the extension platform 5. An annular block 8 is fixed to the outer wall of the air jet 7. A circular tube 9 is slid on the inner wall of one end of the air jet 7, and a conical nozzle 10 is fixed to one end of the circular tube 9. A slide groove is provided on the inner wall of one end of the air jet 7, and a circular block 11 is slid on the inner wall of the slide groove. The circular block 11 is fixedly connected to the circular tube 9. A connecting hose 12 is fixed to the other end of the air jet 7, and a sealing ring 25 is fixed to one end of the circular tube 9. A driving wheel is provided under the base 1, and fixed grooves are provided on both sides of the air suction hole 14. Both ends of the filter block 15 extend into the fixed grooves to prevent the filter block 15 from moving out of the air suction hole 14. The connecting hose 12 is connected to the air source, the air suction pipe 24 is connected to the suction machine, and the triangular cleaning block 18 is against the filter block 15.

[0019] During use, the first drive motor 21 and the temperature detector 6 and the second drive motor 29 are all connected to the external drive source through the controller, the device is moved to the desired position by the drive wheel, the temperature detector 6 is started to detect the laser welding temperature of the lightweight car body, and when a high temperature is detected, the gas source introduces the low-temperature gas into the connecting hose 12, and the connecting hose 12 is ejected through the jet pipe 7 and the conical nozzle 10. The low-temperature gas cools the heat-affected zone to achieve the effect of temperature control, and the suction machine is started to suction. The exhaust gas is sucked into the suction cavity 13 through the suction hole 14 and discharged through the suction pipe 24. The filter block 15 filters impurities to prevent the impurities from clogging the suction cavity 13; When the low-temperature gas is ejected, the low-temperature gas pushes the conical nozzle 10, the circular tube 9 and the annular block 11 to move outward, and the annular block 11 compresses the first spring 22. When the conical nozzle 10 moves, it simultaneously pulls the connecting rod 16 and the cleaning slider 17 to move, and the cleaning slider 17 drives the triangular cleaning block 18 and the arc-shaped push block 19 to move. The triangular cleaning block 18 scrapes off the impurities on the surface of the filter block 15, and the arc-shaped push block 19 pushes the filter block 15 downward to compress the second spring 23, causing it to generate reciprocating vibration, thereby shaking off the impurities on the surface of the filter block 15. When cooling is no longer needed, the first spring 22 pushes the conical nozzle 10 back to its original position, and the connecting rod 16 pushes the cleaning slider 17 back to its original position to perform a secondary cleaning on the filter block 15. The outer wall of the filter block 15 is uniformly provided with arc-shaped holes 20, whose axis is inclined at a certain angle to the axial direction of the air intake hole 14. Figure 10 As shown, the arc-shaped push block 19 on the cleaning slider 17 is a hemispherical protrusion embedded in the arc-shaped hole 20. When the conical nozzle 10 moves outward, the connecting rod 16 drives the cleaning slider 17 to translate synchronously, and the arc-shaped push block 19 slides along an inclined trajectory in the arc-shaped hole 20, generating a downward thrust, forcing the filter block 15 to compress the second spring 23 and move away. When the arc-shaped push block 19 moves out of the arc-shaped hole 20, the second spring 23 pushes the filter block 15 to resist the arc-shaped push block 19, thereby realizing the reciprocating vibration of the filter block 15. The second drive motor 29 can be started to drive the second threaded rod 27 to rotate, and the second threaded rod 27 drives the moving block 28 to move left and right through the second nut. The moving block 28 drives the extension platform 5 to move and adjust the position of the extension platform 5 and the air injection pipe 7.

[0020] Embodiment 2: This embodiment differs from Embodiment 1 in that the technical solution includes: Among them, an air suction cavity 13 is opened through the inside of the annular block 8, and an air suction hole 14 is opened through the outer wall of the annular block 8 in a cross shape. The air suction hole 14 penetrates into the air suction cavity 13, and a filter block 15 slides on the inner wall of the air suction hole 14. A connecting hole is opened through the inner wall of one side of the air suction hole 14, and the connecting hole extends to the outside of the annular block 8 and a connecting rod 16 slides. One end of the connecting rod 16 is fixedly connected to the conical nozzle 10, so that the exhaust gas is sucked into the intake pipe 24 through the intake hole 14 and the intake cavity 13, and discharged through the intake pipe 24.

[0021] Among them, the connecting rod 16 extends into the suction hole 14 and is fixed with a cleaning slider 17. One end of the cleaning slider 17 is provided with a cleaning groove and a triangular cleaning block 18 is slidably provided. The outer wall of one side of the cleaning slider 17 is symmetrical and is fixed with an arc-shaped push block 19. The outer wall of the filter block 15 is equidistantly penetrated with arc-shaped holes 20, and the arc-shaped push block 19 extends into the arc-shaped hole 20, so that the arc-shaped push block 19 and the second spring 23 can be used to push the filter block 15 back and forth, so that the filter block 15 vibrates and shakes off impurities on the surface.

[0022] Among them, a first drive motor 21 is fixed on the upper surface of the support block 2, and the output end of the first drive motor 21 is fixedly connected to the first threaded rod 3 through a coupling, so that the first drive motor 21 can be used to drive the first threaded rod 3 to rotate, and the first threaded rod 3 can be used to drive the fixed block 4 to move up and down to adjust the position of the temperature detector 6.

[0023] A first spring 22 is fixed to the inner wall of the chute, and the other end of the first spring 22 is fixedly connected to the annular block 11, so that the first spring 22 can be used to push the annular block 11 back to its original position.

[0024] A second spring 23 is fixed to the inner wall of the air suction hole 14 , and the other end of the second spring 23 is fixedly connected to the filter block 15 , so that the second spring 23 can be used to push the filter block 15 back to its original position.

[0025] An air intake pipe 24 is fixed to the inner wall of the air intake cavity 13 , and the air intake pipe 24 extends to the outside of the annular block 8 , so that the exhaust gas can be sucked out using the air intake pipe 24 .

[0026] Among them, a third spring 26 is fixed to the inner wall of the cleaning tank, and the other end of the third spring 26 is fixedly connected to the triangular cleaning block 18, so that the third spring 26 can be used to push the triangular cleaning block 18 against the filter block 15 to clean impurities on the surface of the filter block 15.

[0027] 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-described embodiments. The above-described 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 the present invention is defined by the appended claims and their equivalents.

Claims

1. A temperature control device for a heat-affected zone of a lightweight vehicle body laser welding, comprising a base (1), a support block (2) being fixed to an upper surface of the base (1), a groove being provided on an outer wall of one side of the support block (2), a first threaded rod (3) being rotatably provided on the inner wall of the groove, a first nut being threaded on the outer wall of the first threaded rod (3), a fixed block (4) being fixed on the outer wall of the first nut, one end of the fixed block (4) extending out of the groove and being provided with a movable groove, a second threaded rod (27) being rotatably provided on the inner wall of the movable groove, a second nut being threaded on the outer wall of the second threaded rod (27), a movable block (28) being fixedly provided on the outer wall of one side of the second nut, and an extension platform (5) being fixedly provided on one end of the movable block (28); Its characteristics are: A temperature detector (6) is fixed on the upper surface of the extension platform (5), and an air jet (7) is fixed on the lower surface of the extension platform (5). An annular block (8) is fixed on the outer wall of the air jet (7). A circular tube (9) slides on the inner wall of one end of the air jet (7), and a conical nozzle (10) is fixed on one end of the circular tube (9). A sliding groove is provided through the inner wall of one end of the air jet (7), and an annular block (11) slides on the inner wall of the sliding groove. The annular block (11) is fixedly connected to the circular tube (9). A connecting hose (12) is fixed on the other end of the air jet (7), and a sealing ring (25) is fixed on one end of the circular tube (9).

2. The device for controlling the temperature of the heat-affected zone of a lightweight vehicle body laser weld according to claim 1, characterized in that: An air suction cavity (13) is formed through the interior of the annular block (8), and an air suction hole (14) is formed through the outer wall of the annular block (8) in a cross shape. The air suction hole (14) extends into the air suction cavity (13), and a filter block (15) slides on the inner wall of the air suction hole (14). A connecting hole is formed through the inner wall of one side of the air suction hole (14), and the connecting hole extends through the outside of the annular block (8) and slides with a connecting rod (16), and one end of the connecting rod (16) is fixedly connected to the conical nozzle (10).

3. The device for controlling the temperature of the heat-affected zone of a lightweight vehicle body laser weld according to claim 2, characterized in that: The connecting rod (16) extends into the air suction hole (14) and is fixed with a cleaning slider (17). One end of the cleaning slider (17) is provided with a cleaning groove and a triangular cleaning block (18) is slidably mounted thereon. The outer wall of one side of the cleaning slider (17) is symmetrical and is fixed with an arc-shaped push block (19). The outer wall of the filter block (15) is equidistantly penetrated with arc-shaped holes (20), and the arc-shaped push block (19) extends into the arc-shaped hole (20).

4. The device for controlling the temperature of the heat-affected zone of a lightweight vehicle body laser weld according to claim 1, characterized in that: A first drive motor (21) is fixed on the upper surface of the support block (2), and an output end of the first drive motor (21) is fixedly connected to the first threaded rod (3) via a coupling. A second drive motor (29) is fixedly connected to one end of the fixed block (4), and an output end of the second drive motor (29) is fixedly connected to the second threaded rod (27) via a coupling.

5. The device for controlling the temperature of the heat-affected zone of a lightweight vehicle body laser weld according to claim 1, characterized in that: A first spring (22) is fixed to the inner wall of the sliding groove, and the other end of the first spring (22) is fixedly connected to the circular ring block (11).

6. The device for controlling the temperature of the heat-affected zone of a lightweight vehicle body laser weld according to claim 2, characterized in that: A second spring (23) is fixed to the inner wall of the air suction hole (14), and the other end of the second spring (23) is fixedly connected to the filter block (15).

7. The device for controlling the temperature of the heat-affected zone of a lightweight vehicle body laser weld according to claim 2, characterized in that: An air suction pipe (24) is fixed to the inner wall of the air suction cavity (13), and the air suction pipe (24) extends to the outside of the annular block (8).

8. The device for controlling the temperature of the heat-affected zone of a lightweight vehicle body laser weld according to claim 3, characterized in that: A third spring (26) is fixed to the inner wall of the cleaning tank, and the other end of the third spring (26) is fixedly connected to the triangular cleaning block (18).

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