Temperature-controllable and force-controllable laser spin welding device

Abstract

The invention discloses a temperature-controllable and force-controllable laser spin welding device, and relates to the technical field of optical device machining. The device specifically comprises a heating element, a heat conduction clamp and a base, the heating element is arranged on the heat conduction clamp and used for increasing the temperature of the heat conduction clamp, the heat conduction clamp is used for clamping an optical device, and the heat conduction clamp is rotatably connected with the base. According to the spot welding device, the heat conduction clamp is heated through the heating element, when the heat conduction clamp clamps the optical device, the optical device is always at the environment temperature meeting the welding requirement, at the moment, the angle position of the optical device can be changed by rotating the heat conduction clamp, and therefore spot welding in the circumferential direction of the optical device can be completed under the condition that the optical device is not disassembled; and the welding efficiency can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of optical device processing, and specifically provides a temperature-controllable and force-controllable laser rotary welding device. Background Art

[0002] Laser welding is a high-precision and high-efficiency welding method for optical device welding. Optical device welding usually needs to meet certain industry standards and specifications, which often have clear requirements for the welding temperature environment. Welding in a specific temperature environment can ensure that the welding process meets relevant standards and specifications, thereby improving the quality and reliability of the product.

[0003] However, when the optical device and other components need to be spot welded along the circumferential direction, the optical device needs to be removed after spot welding once, and the angle of the optical device needs to be adjusted and then re-clamped and welded. Repeated clamping seriously leads to low welding efficiency of the optical device. Summary of the invention

[0004] The invention provides a temperature-controllable force-controllable laser rotary welding device, which is used to solve the problem of low welding efficiency of optical components caused by severe repeated clamping.

[0005] The technical solution of the present invention is as follows:

[0006] A temperature-controllable and force-controllable laser rotary welding device comprises a heating element, a heat-conducting clamp and a base. The heating element is arranged on the heat-conducting clamp to increase the temperature of the heat-conducting clamp. The heat-conducting clamp is used to clamp an optical device. The heat-conducting clamp is rotatably connected to the base.

[0007] In this solution, the heating element directly heats the thermally conductive clamp, and the thermally conductive clamp is raised to make the optical device at the required welding temperature. The heated thermally conductive clamp clamps the optical device to stabilize the temperature of the environment where the optical device is located, so that the environment where the optical device is located meets the welding requirements. When welding, the thermally conductive clamp can be rotated after welding, and the position of the optical device can be adjusted by rotating the thermally conductive clamp. Therefore, the optical device can be rotated relative to the welding gun by rotating the thermally conductive clamp, so that the optical device can be spot-welded in the circumferential direction without disassembling, thereby improving welding efficiency.

[0008] Preferably, the heat-conducting clamp is provided with a positioning groove for fixing the optical device and a pressing structure for pressing the housing of the optical device, and the pressing structure fixes the optical device in the positioning groove by pressing.

[0009] In this solution, the positioning groove can be used to quickly position the optical device. The optical device can be positioned by only needing the housing of the optical device to fit the bottom and side of the positioning groove. The pressing method can make the optical device fit tightly against the side or bottom of the positioning groove, so that the positioning position of the optical device is accurate and reliable after it is fixed.

[0010] Preferably, the heat conductive clamp is provided with a slide groove, a pressing block is provided in the slide groove, the slide groove passes through the side wall of the positioning groove, the pressing structure is provided in the slide groove, and the pressing structure presses the housing of the optical device through the pressing block.

[0011] In this solution, the pressure block is provided to increase the contact area with the housing of the optical device, thereby preventing the housing of the optical device from being deformed due to excessive pressure.

[0012] Because the optical device will only rest against one side and the bottom of the positioning groove, and the other side of the optical device does not contact the positioning groove, the optical device will be heated unevenly, thus affecting the welding effect. For this reason, the pressing block is made of heat-conductive material, and the heat of the heat-conductive clamp is conducted through the pressing block to the side of the housing that presses the optical device.

[0013] In this solution, the pressing block can transfer the temperature of the heat-conducting clamp to the housing of the optical device, so that the optical device can be heated more evenly and the welding effect can be ensured.

[0014] Preferably, a second slide groove is provided on the side of the slide groove, and the pressing block is provided with a guide protrusion adapted to the second slide groove.

[0015] In this solution, the second sliding groove is provided to prevent the pressing block from detaching from the sliding groove, thereby ensuring that the pressing effect of the pressing block on the optical device is stable and reliable.

[0016] Preferably, second slide grooves are provided on both sides of the slide groove, and the pressing block is slidably connected to the two second slide grooves.

[0017] In this solution, the pressing block is connected to the two second slide grooves at the same time, which can increase the contact area between the pressing block and the heat-conducting clamp, thereby improving the heat-conducting efficiency.

[0018] Preferably, a telescopic groove is processed between the bottom and the side of the positioning groove.

[0019] In the present scheme, the heat-conducting clamp will expand and contract to a certain extent when heated by the heating element. In order to avoid the reduction of the positioning accuracy of the optical device due to thermal expansion and contraction of the sides and bottom of the positioning groove, an expansion groove is provided to reduce the expansion and contraction of the side walls and bottom of the positioning groove, thereby improving the positioning accuracy of the positioning groove for the optical device.

[0020] Preferably, the welding device also includes a temperature sensing unit, a controller and a display, wherein the temperature sensing unit is used to detect the temperature of the heating element or the heat-conducting clamp, the temperature sensing unit, the heating element and the display are electrically connected to the controller, and the display is used to display the temperature detected by the temperature sensing unit.

[0021] In this solution, the temperature sensing unit and the controller can be set to control the temperature more accurately, so that the optical device can be stably located in an ambient temperature that meets the welding requirements. The display can show the temperature, which can facilitate the operator to determine whether the temperature meets the welding temperature requirements before the first welding.

[0022] In order to prevent the heat of the thermally conductive clamp from being dissipated in other structures and causing the temperature of the thermally conductive clamp to be unstable, a thermal insulation block is provided at the bottom of the thermally conductive clamp, and the thermally conductive clamp is connected to other structures through the thermal insulation block.

[0023] In this solution, the heat insulating block can reduce the heat conduction efficiency between the heat conductive fixture and other structures, reduce the heat dissipation rate of the heat conductive fixture, and keep the temperature of the heat conductive fixture stable.

[0024] Preferably, the base is provided with at least two laser welding machines.

[0025] In this solution, at least two laser welding machines are provided to weld the optical components simultaneously, thereby improving welding efficiency.

[0026] Beneficial effects of the present invention:

[0027] The present invention heats the heat-conducting clamp by a heating element. When the heat-conducting clamp clamps the optical device, the optical device is always at an ambient temperature that meets the welding requirements. At this time, the angular position of the optical device can be changed by rotating the heat-conducting clamp, so that the optical device can be spot-welded in a circumferential direction without being disassembled, thereby improving the welding efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solution of the present invention, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 It is a structural schematic diagram of the present invention;

[0030] Figure 2 It is a schematic diagram of the structure of the heating element and the heat conducting fixture;

[0031] Figure 3 is a schematic diagram of the structure of the thermal conductive fixture;

[0032] Figure 4 is a cross-sectional view of the thermal conductive fixture;

[0033] Figure 5 It is a schematic diagram of the structure of the heat conducting fixture, the base plate and the rotating block;

[0034] Figure 6 It is a structural diagram of the positioning block;

[0035] Figure 7 It is a schematic diagram of the structure of the elastic member and the positioning bracket;

[0036] Figure 8 It is a structural schematic diagram of the constraint structure and the base plate;

[0037] Fig. 9 It is a schematic diagram of the structure of the constraint block, the buffer structure and the roller;

[0038] Fig.10 It is a schematic diagram of the structure of the pressure head.

[0039] In the above drawings, the corresponding reference numerals are as follows:

[0040] 1. Base; 2. Bottom plate; 3. Heat-conducting fixture; 4. Welding gun; 5. Display; 6. Heating element; 7. Insulation block; 8. Optical device; 9. Telescopic slot; 10. Positioning slot; 11. Clamping structure; 12. Pressing block; 13. Second slide slot; 14. Rotating block; 15. Handle; 16. Positioning boss; 17. Positioning block; 18. Elastic member; 19. Positioning hole; 20. Guide slot; 21. Positioning bracket; 22. Buffer structure; 23. Roller; 24. Constraint slot; 25. Constraint block; 26. Limit rod; 27. Press head; 28. Groove; 29. ​​Part fixing hole; 30. Locking structure. DETAILED DESCRIPTION

[0041] In conjunction with the accompanying drawings, the technical solution of the present invention is clearly and completely described through specific implementation methods of the embodiments of the present invention.

[0042] Embodiment 1:

[0043] like Figure 1As shown, the first embodiment provides a controllable temperature and force laser rotary welding device, including a base 1, a heat-conducting clamp 3, a heating element 6, a temperature sensing unit, a controller and a welding gun 4, wherein the welding gun 4 and the heat-conducting clamp 3 are respectively connected to the base 1, wherein the heat-conducting clamp 3 is rotatably connected to the base 1, and the welding gun 4 is arranged on one side of the heat-conducting clamp 3. The heating element 6 is connected to the heat-conducting clamp 3, and the heating element 6 is used to heat the heat-conducting clamp 3, so that the temperature of the heat-conducting clamp 3 rises to a temperature that meets the welding requirements. The heat-conducting clamp 3 is used to clamp the optical device 8. When the temperature of the heat-conducting clamp 3 rises to a temperature that meets the welding requirements, the optical device 8 is also at an ambient temperature that meets the welding requirements. After the welding gun 4 performs welding, rotating the heat-conducting clamp 3 can change the angle of the optical device 8 relative to the welding gun 4, so that the welding gun 4 can perform welding in the circumferential direction of the optical device 8. The temperature sensing unit is used to detect the temperature of the heating element 6 or the thermally conductive clamp 3. The temperature sensing unit, the heating element 6 and the display 5 are electrically connected to the controller. The controller controls the heating element 6 according to the temperature detected by the temperature sensing unit. When the temperature reaches the temperature range required for welding, the controller can control the heating element 6 to stop working or reduce the power of the heating element 6. After the temperature is lower than the temperature range, the controller restarts the heating element 6 or increases the power of the heating element 6, thereby ensuring that the temperature of the thermally conductive clamp 3 is always within the temperature range that meets the welding requirements. The display 5 is used to display the problems detected by the temperature sensing unit. During the first welding, the thermally conductive clamp 3 needs to be preheated. After the temperature of the thermally conductive clamp 3 rises to a certain temperature that meets the welding requirements, the optical device 8 is clamped and the optical device 8 is welded.

[0044] The heating element 6 can be an electric heating rod. Since there are electric heating rods with built-in temperature sensors on the market, the electric heating rods with built-in temperature sensors can be directly connected to the controller without separately setting up a temperature sensing unit, so as to reduce costs and simplify the structure.

[0045] The controller can be a PLC or a single chip microcomputer.

[0046] The heat conducting fixture 3 is made of a material with high thermal conductivity, such as copper, aluminum, etc. An alloy, such as chrome zirconium copper, may also be used, because chrome zirconium copper has poor adhesion to welding slag, which will produce splashing welding slag during welding. Using chrome zirconium copper can facilitate cleaning of welding slag.

[0047] The thermally conductive clamp 3 is solid and has a specific heat capacity much greater than that of air. Therefore, compared with heating the air in the welding environment to a temperature that meets the welding requirements, heating the thermally conductive clamp 3 can make the temperature more stable and prevent significant temperature fluctuations. The clamped optical device 8 can be more stably maintained in an ambient temperature that meets the welding requirements, thereby increasing the yield rate.

[0048] like Figure 2As shown, the heating element 6 can be directly installed in the heat-conducting fixture 3, for example, a heating hole is opened on the heat-conducting fixture 3, and the heating element 6 is inserted into the heat-conducting hole to heat the heat-conducting fixture 3. Although this installation method can achieve the heating effect, it will cause uneven temperature distribution on the heat-conducting fixture 3, especially the temperature transmitted to the optical device 8 will be uneven, resulting in a large temperature difference at different positions of the optical device 8, thereby affecting the welding quality.

[0049] Therefore, the heating element 6 can be installed in a heat-conducting housing, the heating hole is set in the heat-conducting housing, and the heating element 6 is inserted into the heating hole on the heat-conducting housing to heat the heat-conducting housing. The heat-conducting housing is fixed to the heat-conducting clamp 3 by fasteners, and the temperature on the heat-conducting housing is transferred to the heat-conducting clamp 3, thereby heating the heat-conducting clamp 3. The contact surface between the heat-conducting housing and the heat-conducting clamp 3 is a plane, so that the temperature can be transferred to the heat-conducting clamp 3 more evenly, and the temperature difference at various places of the heat-conducting clamp 3 is smaller, so that the optical device 8 is in a lower temperature environment.

[0050] The heat-conducting shell can be made of materials with high thermal conductivity such as red copper and aluminum.

[0051] like Figure 3 As shown, the heat-conducting clamp 3 is provided with a positioning groove 10 and a clamping structure 11 to clamp the optical device 8. The positioning groove 10 positions the optical device 8 through a side and a groove bottom. When the housing of the optical device 8 is in contact with the side or groove bottom of the positioning groove 10, the position of the optical device 8 is positioned. Then, the optical device 8 can be fixed by clamping the optical device 8 from the side through the clamping structure 11, and the position of the optical device 8 after fixation is accurate, ensuring that the welding gun 4 can be welded to the correct position during welding. The top of the positioning groove 10 passes through the heat-conducting clamp 3, and the part of the optical device 8 that needs to be welded is located at the top of the positioning groove 10, which is convenient for the welding gun 4 to spot weld the optical device 8 in the circumferential direction.

[0052] The positioning groove 10 and the heat-conducting shell are respectively located on both sides of the heat-conducting clamp 3. Heat is conducted from one side of the heat-conducting clamp 3 to the other side. The temperature at the location of the positioning groove 10 is more uniform and the temperature difference is smaller, so that the optical device 8 can be placed in an environment with a smaller temperature difference, thereby improving the yield rate of the optical device 8 during welding.

[0053] The optical device 8 will contact one side and the bottom of the positioning groove 10, and the other side of the positioning groove 10 will not contact the optical device 8. In order to avoid the temperature on this side being too low, a slide groove is provided on the heat-conducting clamp 3. The length direction of the slide groove is perpendicular to the side of the positioning groove 10, and one end of the slide groove passes through the side of the positioning groove 10 that does not contact the optical device 8. A pressing block 12 is provided in the slide groove, and the clamping structure 11 presses the housing of the optical device 8 through the pressing block 12. The pressing block 12 is made of heat-conducting material, such as red copper or aluminum. The pressing block 12 can transmit the temperature of the heat-conducting clamp 3 to the optical device 8, making the temperature around the optical device 8 more uniform, and placing the optical device 8 in an environment with a smaller temperature difference, thereby improving the welding quality.

[0054] like Figure 4 As shown, the two side walls of the slide groove are provided with a second slide groove 13, and the two sides of the pressing block 12 are respectively provided with guide protrusions, which are slidably connected to the second slide groove 13. The guide protrusions can prevent the pressing block 12 from escaping from the slide groove, and can also increase the contact area between the second slide groove 13 and the heat conducting clamp 3, thereby improving the heat conduction efficiency.

[0055] The clamping structure 11 may be a clamping bolt, which is in driving connection with the heat conducting fixture 3. The axis of the clamping bolt is perpendicular to the side wall of the positioning groove 10, and screwing the clamping bolt can push the clamping block 12 to move, so that the clamping block 12 can clamp the optical device 8 from the side.

[0056] An expansion groove 9 is also provided between the side and bottom of the positioning groove 10. The expansion groove 9 is used to prevent the side or bottom of the positioning groove 10 from expanding and deforming significantly due to temperature increase, and to ensure the positioning accuracy of the positioning groove 10 to the optical device 8. The principle of the expansion groove 9 is the same as that of the road expansion joint, which will not be repeated here.

[0057] like Figure 5 As shown, the heat-conducting clamp 3 is rotatably connected to the base 1. In order to prevent the heat of the heat-conducting clamp 3 from being transferred to the base 1 or other structures and causing the heat of the heat-conducting clamp 3 to be lost, a heat-insulating block 7 is provided at the bottom of the heat-conducting clamp 3, and the heat-insulating block 7 is fixedly connected to the heat-conducting clamp 3 by fasteners such as bolts. The bottom of the heat-insulating block 7 is connected to a rotating block 14, and the rotating block 14 is rotatably connected to the base 1. The heat-conducting clamp 3 is located on the top of the rotating block 14. When the rotating block 14 rotates, the heat-conducting clamp 3 will rotate. Because of the spacing of the heat-insulating block 7, the temperature of the heat-conducting clamp 3 will not be quickly heat-conducted with other structures, which can prevent the temperature of the heat-conducting clamp 3 from being quickly lost and causing temperature fluctuations, and can keep the optical device 8 in a stable ambient temperature.

[0058] A bottom plate 2 may be provided on the top of the base 1 , a rotating flange is mounted on the bottom plate 2 , a rotating hole is provided on the rotating block 14 , and the rotating hole is connected to the rotating flange, so that the rotating block 14 can rotate relative to the base 1 .

[0059] The welding gun 4 is a laser welding machine, which can weld the optical device 8 by laser.

[0060] Embodiment 2:

[0061] The second embodiment provides a temperature-controllable and force-controllable laser rotary welding device. Different from the first embodiment, at least two welding guns 4 are provided in the second embodiment.

[0062] The welding guns 4 are distributed in a circular array in the circumferential direction of the heat conductive clamp 3. Multiple welding guns 4 can form multiple solder joints on the optical device 8 at the same time. When the same number of solder joints are welded in the circumferential direction of the optical device 8, the number of rotations of the heat conductive clamp 3 can be reduced, thereby improving the welding efficiency.

[0063] Embodiment three:

[0064] The third embodiment provides a temperature-controllable and force-controllable laser rotary welding device. Different from the first embodiment, the third embodiment provides a positioning structure and a restraining structure for the rotary block 14 .

[0065] like Figure 5 and Figure 6 As shown, the positioning structure includes an elastic body and a positioning hole 19. The elastic body is arranged on the rotating block 14 and rotates with the rotating block 14, while the positioning hole 19 is arranged on the bottom plate 2. At the initial position of the rotating block 14, the elastic body is located in one positioning hole 19. At this time, the rotating block 14 needs to overcome the resistance of the elastic body moving out of the positioning hole 19 to rotate. When the rotating block 14 rotates, the elastic body moves with the rotating block 14, and the positioning hole 19 is located on the moving path of the elastic body. When the elastic body moves to another positioning hole 19, the elastic body is stuck in the positioning hole 19 under the action of its own elastic force, resulting in an increase in the rotation resistance of the rotating block 14. The two positioning holes 19 are fixed at a fixed angle relative to the rotation axis of the rotating block 14, and the operator can determine the rotation angle of the rotating block 14 according to the rotation resistance. At this time, the optical device 8 clamped by the rotating block 14 can be welded. Because the rotation of the rotating block 14 needs to overcome the resistance of the elastic member 18 moving out of the positioning hole 19, the contact between the welding gun 4 and the optical device 8 will not cause the rotating block 14 to rotate, which can ensure that the welding gun 4 can weld at the correct position and form a solder joint at the correct position.

[0066] like Figure 7As shown, the elastic body can be an elastic positioning bead on the market. A positioning bracket 21 for mounting the elastic positioning bead can be provided on the rotating block 14, a threaded hole is provided on the positioning bracket 21, and the elastic positioning bead is provided with an external thread, and the elastic positioning bead is threadedly connected with the positioning bracket 21. Alternatively, the elastic body can be an elastic sheet, which is always in a stressed bending state, and the elastic sheet is stretched after entering the positioning hole 19 and compressed after leaving the positioning hole 19, so that the resistance of the elastic sheet leaving the positioning hole 19 can form the rotation resistance of the rotating block 14.

[0067] A plurality of positioning holes 19 may be provided in the circumferential direction of the rotating block 14, and the elastic member 18 may respectively cooperate with the plurality of positioning holes 19. The positioning holes 19 are distributed in a circumferential array along the rotation center of the rotating block 14, so that the angles between any two adjacent positioning holes 19 and the rotation center of the rotating block 14 are the same. In other words, as the rotating block 14 rotates, each time the elastic member enters the positioning hole 19, the rotating block 14 rotates by the same angle, and the welding gun 4 can perform one welding.

[0068] A guide groove 20 is provided between the positioning holes 19. Along the rotation direction of the rotating block 14, the first positioning hole 19 to the last positioning hole 19 are interconnected through the guide groove 20. The guide groove 20 is an arc-shaped groove, and the center of the guide groove 20 coincides with the rotation center of the rotating block 14. When the rotating block 14 rotates, the elastic member 18 always moves along the guide groove 20. The overall shape of the guide groove 20 is an arc-shaped groove because the guide groove 20 is never merged into a full circle. Along the rotation direction of the rotating block 14, there is no guide groove 20 between the last positioning hole 19 and the first positioning hole 19. In other words, along the rotation direction of the rotating block 14, it is impossible to go directly from the last positioning hole 19 to the first positioning hole 19. It should be noted that, because the rotating block 14 can rotate clockwise and counterclockwise, the first positioning hole 19 and the last positioning hole 19 in the rotation direction of the rotating block 14 mentioned here refer to the positioning hole 19 at the end of the guide groove 20 located behind the rotation direction during this rotation of the rotating block 14 as the first positioning hole 19, and the positioning hole 19 at the other end of the guide groove 20 as the last positioning hole 19.

[0069] The elastic member 18 can only move in the guide groove 20. When the elastic member 18 leaves the guide groove 20, the compression limit of the elastic member 18 will be exceeded, so that the elastic member 18 is pressed against the plane where the guide groove 20 is located, thereby greatly increasing the rotation resistance of the rotating block 14, making the rotating block 14 unable to rotate. Therefore, when the rotating block 14 cannot continue to rotate, the operator can know that the welding is finished, avoiding repeated welding of the same position of the optical device 8.

[0070] The elastic member 18 can be disposed on the rotating block 14, and the positioning hole 19 is disposed on the bottom plate 2. Similarly, the elastic member 18 can also be disposed on the bottom plate 2, and the positioning hole 19 is disposed on the rotating block 14. When the elastic member 18 is inserted into the positioning hole 19, it can still provide additional rotation resistance for the rotating block 14.

[0071] Still take the example that the elastic member 18 is disposed on the rotating block 14 .

[0072] The elastic member 18 can be arranged on the bottom surface of the rotating block 14, that is, the deformation direction of the elastic member 18 is downward, and the positioning hole 19 is arranged on the top surface of the bottom plate 2, and the elastic member 18 can be inserted into the positioning hole 19 from top to bottom. At this time, the elastic member 18 can be installed by directly opening a hole at the bottom of the rotating block 14 and directly installing the elastic member 18 to the bottom of the rotating block 14.

[0073] The elastic member 18 can also be arranged on the side of the rotating block 14. In this case, a positioning block 17 needs to be arranged on the base plate 2. The positioning block 17 is located on one side of the rotating block 14. The positioning hole 19 is opened on the positioning block 17. The elastic member 18 moves along the side of the positioning block 17 close to the rotating block 14.

[0074] The side surface of the positioning block 17 close to the rotating block 14 is an arc surface, and the axis of the arc surface coincides with the rotation center of the rotating block 14, so that the elastic member 18 can slide smoothly along the arc surface. Optionally, the guide groove 20 can be opened on the side surface of the positioning block 17 close to the rotating block 14.

[0075] The positioning block 17 can be fixed to the base plate 2 by fasteners such as bolts.

[0076] like Figure 8 As shown, the constraint structure may include a constraint block 25, which is fixedly connected to the base plate 2 by fasteners such as bolts. A constraint groove 24 is provided on one side of the constraint block 25 close to the rotating block 14, the opening direction of the constraint groove 24 is toward the rotating block 14, and the two ends of the constraint groove 24 pass through the two sides of the constraint block 25. The bottom of the constraint groove 24 is an arc surface, and the center of the bottom of the constraint groove 24 coincides with the rotation center of the rotating block 14. The upper and lower side surfaces of the constraint groove 24 are respectively attached to the upper and lower sides of the rotating block 14, which has the effect of constraining the rotating block 14 from the upper and lower sides to prevent the rotating block 14 from tilting.

[0077] At least two constraint structures may be provided in the circumferential direction of the rotating block 14. For example, constraint structures may be provided on two opposite sides of the rotating block 14; or three, four or more constraint structures may be provided along the circumferential direction of the rotating block 14.

[0078] The larger the contact area between the constraint structure and the rotating block 14, the better the constraint effect. Only one constraint structure can also achieve the effect of constraining the rotating block 14. If the contact mode between the constraint structure and the rotating block 14 is point contact, more than two constraint structures need to be set to achieve the constraint effect.

[0079] A rotating handle 15 is provided on one side of the rotating block 14 , and an operator can hold the rotating handle 15 to rotate the rotating block 14 .

[0080] like Fig. 9 As shown, a buffer structure 22 is also provided on the side of the rotating block 14 .

[0081] The buffer structure 22 is fixedly connected to the rotating block 14, and the buffer structure 22 can only be extended and retracted in the radial direction of the rotating block 14. One end of the buffer structure 22 is inserted into the constraint groove 24, and the two side surfaces of the constraint groove 24 are respectively against the upper and lower sides of the buffer structure 22. The constraint groove 24 constrains the position of the buffer structure 22 from the upper and lower sides, thereby achieving the effect of constraining the buffer rotating block 14.

[0082] The buffer structure 22 may be a buffer plunger. The buffer plunger includes a plunger rod, a plunger barrel and a buffer spring, one end of the plunger rod is rotatably connected to the roller 23, the other end of the plunger rod is slidably connected to the plunger barrel, the spring is arranged in the plunger barrel, and the two ends of the buffer spring are respectively against the plunger rod and the plunger barrel.

[0083] When the distance between the bottom of the constraint groove 24 and the rotation axis of the rotating block 14 is reduced due to low installation accuracy of the constraint structure, the buffer structure 22 abuts against the bottom of the constraint groove 24, and the buffer structure 22 can shrink inward along the radial direction of the rotating block 14, thereby preventing the constraint groove 24 and the rotating block 14 from getting stuck.

[0084] A roller 23 may also be provided, and the roller 23 is provided at the end of the buffer structure 22, and the roller 23 is rollingly connected with the constraint groove 24. The two side surfaces of the constraint groove 24 are respectively in contact with the two end surfaces of the roller 23, and the two side surfaces of the constraint groove 24 respectively constrain the position of the roller 23 from the upper and lower sides, and the rotating block 14 is constrained by constraining the position of the roller 23 to prevent the rotating block 14 from tilting.

[0085] The roller 23 can reduce the friction between the buffer structure 22 and the constraint groove 24 , thereby reducing the resistance to the rotation of the rotating block 14 .

[0086] The constraining structure is provided to prevent the rotating block 14 from tilting and to prevent the elastic body from moving in the vertical direction and getting stuck on the positioning block 17 .

[0087] Embodiment 4:

[0088] The fourth embodiment provides a temperature-controlled and force-controlled laser rotary welding device. Different from the first embodiment, the fourth embodiment also includes a pressing head 27, which is used to press the parts with optical fibers that need to be welded and connected to the optical device 8 from the upper side.

[0089] like Fig.10 As shown, a part fixing hole 29 is provided at the bottom of the pressure head 27, and a groove 28 is provided on the side of the pressure head 27. The groove 28 runs through the top and bottom surfaces of the pressure head 27, and the groove 28 is connected to the part fixing hole 29. When the part is inserted into the part fixing hole 29, the optical fiber connected to the part can be located in the groove 28, so as to solve the problem that the optical fiber blocks the insertion of the part into the part fixing hole 29. The width of the groove 28 is adapted to the optical fiber, and is used for the optical fiber to pass through. If the width of the groove 28 is too large, it will affect the positioning effect of the part fixing hole 29 on the part. The groove 28 runs through the bottom of the pressure head 27, so that the optical fiber can enter the groove 28 from the bottom of the pressure head 27, and the groove 28 runs through the top of the pressure head 27, so that the optical fiber can move to the top of the groove 28. When the optical fiber is located at the top of the groove 28, the optical fiber can be against the side of the groove 28 and remain motionless, and the optical fiber at this time will not block the welding.

[0090] A processing hole can be set on the pressure head 27, and the processing hole is coaxial with the part fixing hole 29. When processing the part fixing hole 29, the processing can be performed based on the axis of the processing hole, which is convenient for processing the part fixing hole 29. The groove 28 runs through the side wall of the processing hole, and the groove 28 is connected to the processing hole. Because the groove 28 is connected to the processing hole, the optical fiber can enter the processing hole from the groove 28. After the optical fiber enters the processing hole, it can lean against the side wall of the processing hole to prevent the optical fiber from sliding down along the groove 28 under the action of gravity, thereby preventing the optical fiber from blocking the welding.

[0091] The processing hole is communicated with the part fixing hole 29 so that the optical fiber can be directly connected. The diameter of the processing hole can be smaller than the part fixing hole 29 or larger than the part fixing hole 29.

[0092] When the diameter of the processed hole is larger than the part fixing hole 29, in order to prevent the part from sliding relative to the part fixing hole 29 and causing the gravity of the pressing head 27 to be unable to be stably applied to the part, a locking hole is provided on the pressing head 27. The locking hole penetrates the side wall of the part fixing hole 29 from the side, and a locking structure 30 is provided in the locking hole. The locking structure 30 presses the part from the side to prevent the part from sliding relative to the part fixing hole 29.

[0093] The locking hole is a threaded hole, and the locking structure 30 is provided with an external thread adapted to the threaded hole. For example, the locking structure 30 adopts a locking bolt, and the locking bolt is in transmission connection with the threaded hole. After the component is inserted into the component fixing hole 29, the locking bolt is tightened, and the locking bolt is used to press the component from the side, so that the component is fixed relative to the pressure head 27.

[0094] Before welding, the optical device 8 is clamped with a heat-conducting clamp 3 so that the fixing socket of the optical device 8 faces upward. The component is then inserted into the component fixing hole 29, and then the component is pressed by the locking structure 30 to fix the component relative to the pressure head 27, so that the component can move with the pressure head 27 and will not be detached during the movement of the pressure head 27. After the component is fixed in the component fixing hole 29, the pressure head 27 is moved and the component is inserted into the fixing socket. After the component is inserted into the fixing socket, welding can be started. During the welding process, even if the welding gun 4 contacts the component, the contact of the welding gun 4 will not cause the displacement of the component because the gravity of the pressure head 27 presses the component downward, ensuring that the component corresponds to the position of the optical element in the optical device 8 and can stably transmit the optical signal.

[0095] The pressing head 27 includes a positioning boss 16 and a counterweight. Because the pressing head 27 needs to have a certain weight to press the parts by gravity, the material of the pressing head 27 needs to be a material with a high density and a certain volume. The material of the pressing head 27 can be made of alloys such as carbon steel, SG steel, high-speed steel, etc., or can be made of non-metallic materials such as diamond.

[0096] The larger the volume of the pressure head 27, the larger the area of ​​the end face where the part fixing hole 29 is located. The end face where the part fixing hole 29 is located refers to the bottom face of the pressure head 27. The size of the parts is smaller than that of the optical device 8, so when the welding gun 4 is welding, it is welded at a certain angle downward. If the bottom face area of ​​the pressure head 27 is too large, it will hinder the welding of the welding gun 4. Therefore, the pressure head 27 is set as a combination structure of a positioning boss 16 and a counterweight block. The part fixing hole 29 is set on the bottom face of the positioning boss 16, and the counterweight block is set on the top of the positioning boss 16. The main weight of the pressure head 27 is distributed on the counterweight block. The positioning boss 16 is used to increase the height of the counterweight block to avoid the counterweight block from obstructing the welding work. This setting method can maintain the bottom face area of ​​the pressure head 27 within a range that does not affect welding, and the height of the configuration block is increased, thereby avoiding the pressure head 27 from obstructing welding.

[0097] The pressure head 27 and the positioning boss 16 may be integrally formed.

Claims

1. A temperature-controlled and force-controlled laser rotary welding device, characterized in that: The invention comprises a heating element (6), a heat-conducting clamp (3) and a base (1); the heating element (6) is arranged on the heat-conducting clamp (3) and is used to increase the temperature of the heat-conducting clamp (3); the heat-conducting clamp (3) is used to clamp an optical device (8); and the heat-conducting clamp (3) is rotatably connected to the base (1).

2. The temperature-controlled and force-controlled laser rotary welding device according to claim 1, characterized in that: The heat-conducting clamp (3) is provided with a positioning groove (10) for fixing the optical device (8) and a pressing structure (11) for pressing the housing of the optical device (8); the pressing structure (11) fixes the optical device (8) in the positioning groove (10) by pressing.

3. The temperature-controlled and force-controlled laser rotary welding device according to claim 2, characterized in that: The heat-conducting clamp (3) is provided with a slide groove, a pressing block (12) is provided in the slide groove, the slide groove passes through the side wall of the positioning groove (10), the pressing structure (11) is provided in the slide groove, and the pressing structure (11) presses the outer shell of the optical device (8) through the pressing block (12).

4. The temperature-controlled and force-controlled laser rotary welding device according to claim 3 is characterized in that: The pressing block (12) is made of a heat-conducting material, and the heat of the heat-conducting clamp (3) is conducted to one side of the housing of the pressed optical device (8) through the pressing block (12).

5. The temperature-controlled and force-controlled laser rotary welding device according to claim 4, characterized in that: A second slide groove (13) is arranged on the side of the slide groove, and the pressing block (12) is provided with a guide protrusion adapted to the second slide groove (13).

6. The temperature-controlled and force-controlled laser rotary welding device according to claim 5, characterized in that: Second slide grooves (13) are provided on both side surfaces of the slide groove, and the pressing block (12) is slidably connected to the two second slide grooves (13).

7. The temperature-controlled and force-controlled laser rotary welding device according to claim 2, characterized in that: A telescopic groove (9) is machined between the groove bottom and the side surface of the positioning groove (10).

8. The temperature-controlled and force-controlled laser rotary welding device according to claim 1, characterized in that: It also includes a temperature sensing unit, a controller and a display (5), wherein the temperature sensing unit is used to detect the temperature of the heating element (6) or the heat-conducting clamp (3), the temperature sensing unit, the heating element (6) and the display (5) are electrically connected to the controller, and the display (5) is used to display the temperature detected by the temperature sensing unit.

9. The temperature-controlled and force-controlled laser rotary welding device according to claim 1, characterized in that: A heat insulating block (7) is provided at the bottom of the heat conducting clamp (3), and the heat conducting clamp (3) is connected to other structures via the heat insulating block (7).

10. The temperature-controlled and force-controlled laser rotary welding device according to claim 9, characterized in that: The base (1) is provided with at least two laser welding machines.

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