Laser welding tool clamp for machining

Abstract

The invention discloses a laser welding tool clamp for machining, and belongs to the technical field of machining, the laser welding tool clamp comprises a machine base, a machining table is mounted at the top of the machine base, and clamping mechanisms are symmetrically arranged at the two ends of the machining table; the clamping mechanism comprises limiting plates symmetrically fixed to the edge of the machining table, adjusting lead screws penetrate through the limiting plates in a threaded mode, clamping plates are rotatably connected to the ends of the adjusting lead screws, cooling assemblies are arranged in the clamping mechanism, and the cooling assemblies are used for cooling the contact positions of the clamping mechanism and the workpieces; and the cooling assembly communicates with the interior of the machining table. According to the laser welding tool clamp for machining, after a workpiece is clamped, heat generated in the welding process and heat on the workpiece are conducted, the temperature between the workpiece and the clamping mechanism can be accurately dissipated, smoke generated at the welding position can be specifically sucked away, and the machining environment is prevented from being affected.

Description

Technical Field

[0001] This invention relates to the field of machining technology, specifically to a laser welding fixture for machining. Background Technology

[0002] In machining processes, laser welding equipment is used to weld workpieces. During welding, fixtures are needed to fix the workpiece. Laser welding fixtures are auxiliary devices specifically designed for laser welding processes, primarily used for precise fixing and positioning of workpieces, solving two core problems in the welding process: inaccurate positioning and welding deformation. For example, a laser welding fixture with announcement number CN205464978U includes: a base; a support mounted on the base; a motor mounted within the support; a positioning seat for fixing the workpiece, linked to the motor, which can drive the positioning seat to rotate; a bracket mounted on the base; a cylinder mounted on the bracket; and a clamping fixture linked to the cylinder, which can drive the clamping fixture to clamp the workpiece fixed on the positioning seat. A laser welding system using this laser welding fixture is also provided. In the above-mentioned laser welding fixture and the laser welding system using this fixture, the workpiece is placed on the positioning seat, and the motor can drive the positioning seat to rotate, thereby driving the workpiece to rotate, so that the laser beam performs circular welding on the workpiece. Furthermore, by clamping the workpiece with a clamping fixture, deformation of the workpiece due to heat can be prevented during the welding process; For example, a fixture for laser welding, with announcement number CN206425739U, includes: a lower mold with a receiving groove on its top surface for accommodating the workpiece; an upper mold covering the top surface of the lower mold and having through holes corresponding to the areas of the workpiece to be welded; a positioning plate fixed to the laser welding worktable and positioned at the bottom of the lower mold; and an elastic pressure head assembly detachably connected to the upper mold, a portion of which is inserted into the through holes and holds the workpiece to be welded at the welding location. The elastic pressure head assembly has a through hole for laser penetration, the diameter of which is larger than the diameter of the workpiece to be welded. In this laser welding fixture, the workpiece to be welded and the fixture are relatively fixed relative to the laser welding worktable, resulting in high positioning accuracy of the studs and a high yield of welded products. However, the above-mentioned laser welding fixture still has the following drawbacks in actual use: 1. Traditional welding fixtures, after clamping the workpiece, will increase the temperature of the contact surface between the fixture and the workpiece due to the heat generated during the welding process and the conduction of heat from the workpiece. Most of them are equipped with additional heat dissipation structures for cooling, but the cooling position is not precise enough and the cooling efficiency is low. 2. Furthermore, a large amount of fumes are generated during the welding process. Traditional welding fixtures are not precise enough in collecting fumes and cannot target the fumes according to the welding position, resulting in a large amount of fumes drifting and affecting the processing environment.

[0003] To address the aforementioned issues, there is an urgent need for innovative designs based on existing welding tooling and fixtures. Summary of the Invention

[0004] The purpose of this invention is to provide a laser welding fixture for machining, in order to solve the problems mentioned in the background art that most traditional welding fixtures are equipped with additional heat dissipation structures for cooling, resulting in insufficient precision in cooling position and insufficient precision in collecting fumes, making it impossible to target the absorption of fumes according to the welding position.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a laser welding fixture for machining, comprising a base, a machining table mounted on the top of the base, and clamping mechanisms symmetrically arranged at both ends of the machining table; It also includes: the clamping mechanism includes a limiting plate symmetrically fixed at the edge of the processing table, and the internal thread of the limiting plate is through an adjusting screw, and the end of the adjusting screw is rotatably connected to a clamping plate; the clamping mechanism is provided with a cooling component, and the cooling component is used to cool the contact position between the clamping mechanism and the workpiece, and the cooling component is interconnected with the interior of the processing table.

[0006] Preferably, the cooling component includes a heat dissipation channel formed in the clamping plate, and the heat dissipation channel is curved. A fixing pipe is fixed to the bottom of the clamping plate, and the fixing pipe slides through the through groove inside the processing table. The movement of the clamping plate can be limited by the setting of the fixing pipe.

[0007] Preferably, a first partition plate is fixed inside the fixed tube, and the cavities on both sides of the first partition plate are respectively connected to the two ends of the heat dissipation channel. The bottom of the fixed tube extends into the processing table and slides against the surface of the support plate. When the fixed tube moves to different positions, it can connect with the corresponding infusion hole.

[0008] Preferably, the support plate is fixed inside the processing table, and a movable strip is attached to the inner top of the processing table. The movable strip is evenly distributed inside the processing table, and a fixing hole is evenly opened inside the movable strip. At the same time, the fixing hole and the smoke inlet are staggered, and the smoke inlet is evenly opened on the top of the processing table.

[0009] Preferably, the lower end face of the movable strip is symmetrically fixed with a support block, and the joint of the two movable strips forms a "V" shape. The adjacent movable strips are closely connected, and the movable strips and the inner wall of the processing table are elastically slidably connected. At the same time, the bottom of one of the support blocks is fixed with a connecting block by a rod, so when the support block moves, the connecting block can be moved synchronously by the rod.

[0010] Preferably, the connecting block is slidably disposed in the cavity inside the support plate, and the support plate has infusion holes at equal intervals in the middle position, and the infusion holes have a fan-shaped structure. At the same time, the connecting block blocks the infusion holes, and the two infusion holes distributed opposite to each other are used to deliver cooling liquid and liquid after absorbing heat.

[0011] Preferably, a fixing plate is provided on the central axis of the lower end face of the support plate, and the fixing plate is fixed to the inner bottom surface of the processing table. A second partition plate is provided inside the fixing plate, and the spaces on both sides of the second partition plate are connected to the spaces on both sides of the first partition plate through two infusion holes.

[0012] Preferably, the height of both ends of the fixing plate is lower than the height of the middle part, and an infusion pump is installed on one side of the fixing plate. A first liquid storage chamber is provided on the side of the infusion pump. The first liquid storage chamber and the second liquid storage chamber are connected to each other through the lower part of the end of the fixing plate. Through the lower part of both ends of the fixing plate, the liquid after heat absorption can be cooled and recycled.

[0013] Preferably, a liquid outlet valve is provided on the other side of the fixed plate, and a second liquid storage chamber is provided on the side of the liquid outlet valve. The first liquid storage chamber and the second liquid storage chamber are respectively located in the processing tables on both sides of the fixed plate, and the first liquid storage chamber and the second liquid storage chamber are respectively connected to the spaces on both sides of the second partition plate.

[0014] Preferably, a smoke removal mechanism is provided on the side of the processing table, and the smoke removal mechanism includes a smoke extraction fan installed on the side of the processing table. The smoke inlet and smoke outlet of the smoke extraction fan are respectively connected to the space above the support plate and the interior of the second liquid storage chamber. An exhaust pipe is provided on the side of the second liquid storage chamber.

[0015] Compared with the prior art, the beneficial effects of the present invention are: This laser welding fixture for machining, after clamping the workpiece, can accurately dissipate the heat generated during the welding process and the heat conduction on the workpiece, and can also specifically remove fumes generated at the welding position, avoiding impact on the processing environment. The specific details are as follows: 1. When the fixed tube moves to the position where the two movable strips meet, it can drive the two movable strips away from each other. After the movable strips move, they drive the connecting block to move through the support block, thus releasing the blockage of the infusion hole. In this way, during the welding process, the operation of the infusion pump will transfer the liquid in the first storage chamber upward through the cavity in the fixed plate, and then enter the fixed tube through the infusion hole. After that, it will flow into the heat dissipation channel to carry away the heat on the clamp. Furthermore, the liquid that has absorbed heat is transferred to the second storage chamber through the fixed pipe, infusion hole and fixed plate. In this way, the liquid with heat is separated from the liquid that is being cooled, so that the liquid with heat can be cooled. When the liquid in the second storage chamber gradually increases and exceeds the lower part of the fixed plate, it can flow into the first storage chamber for recycling. 2. After the movable bar moves, it causes the fixed hole to coincide with the smoke inlet hole. During the welding process, the smoke fan runs and generates suction, which can draw the smoke generated at the welding position into the upper part of the support plate through the smoke inlet hole, and then transmit it to the second liquid storage chamber. The smoke can be filtered by the liquid in the second liquid storage chamber, and impurities are intercepted in the second liquid storage chamber for purification treatment. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a top view of the processing table structure of the present invention; Figure 3 This is a schematic diagram of the front section structure of the processing table of the present invention; Figure 4 This is a side sectional view of the processing table of the present invention; Figure 5 For the present invention Figure 4 Enlarged structural diagram at point A in the middle; Figure 6 This is a top-section schematic diagram of the processing table structure of the present invention; Figure 7 For the present invention Figure 6 Enlarged structural diagram at point B; Figure 8 This is a schematic diagram of the two movable strip separation structure of the present invention; Figure 9 This is a schematic cross-sectional view of the clamping plate structure of the present invention; Figure 10 This is a schematic diagram of the exhaust pipe structure of the present invention.

[0017] In the diagram: 1. Machine base; 2. Machining table; 3. Limiting plate; 4. Adjusting screw; 5. Clamping plate; 51. Heat dissipation channel; 6. Fixing pipe; 61. First partition plate; 7. Support plate; 8. Movable strip; 9. Fixing hole; 10. Smoke inlet; 11. Support block; 12. Connecting block; 13. Infusion port; 14. Fixing plate; 15. Second partition plate; 16. Infusion pump; 17. First liquid storage chamber; 18. Discharge valve; 19. Second liquid storage chamber; 20. Smoke fan; 21. Exhaust pipe. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figures 1-10 The present invention provides the following technical solution: Example 1: To address the problems existing in the prior art, this example provides a laser welding fixture for machining, comprising a base 1, a machining table 2 mounted on the top of the base 1, and clamping mechanisms symmetrically arranged at both ends of the machining table 2; characterized in that it further comprises: a clamping mechanism including a limiting plate 3 symmetrically fixed to the edge of the machining table 2, wherein an adjusting screw 4 is threaded through the internal thread of the limiting plate 3, and a clamping plate 5 is rotatably connected to the end of the adjusting screw 4; a cooling component is provided inside the clamping mechanism, and the cooling component is used to cool the contact position between the clamping mechanism and the workpiece, and the cooling component is interconnected with the interior of the machining table 2, such as... Figures 1-2 As shown, the workpiece to be clamped is first placed on the processing table 2 between the two clamping plates 5. Then, the adjusting screw 4 is rotated to drive the clamping plates 5 to move through the threaded transmission with the limiting plate 3. The clamping plates 5 are limited by the sliding of the fixed tube 6 inside the processing table 2, so that the clamping plates 5 can only move horizontally. When the two clamping plates 5 are close to each other, the workpiece can be clamped.

[0020] Existing welding fixtures, after clamping the workpiece, experience increased temperatures at the workpiece-fixture contact surface due to heat generated during welding and heat conduction from the workpiece. Most require additional cooling structures, resulting in imprecise cooling positioning and low cooling efficiency. Figures 3-9As shown, the cooling component includes a heat dissipation channel 51 formed within the clamping plate 5, and the heat dissipation channel 51 is curved. A fixing pipe 6 is fixed to the bottom of the clamping plate 5, and the fixing pipe 6 slides through a through groove inside the processing table 2. A first partition plate 61 is fixed inside the fixing pipe 6, and the cavities on both sides of the first partition plate 61 are respectively connected to the two ends of the heat dissipation channel 51. The bottom of the fixing pipe 6 extends into the processing table 2 and slides against the surface of the support plate 7. The support plate 7 is fixed inside the processing table 2, and a movable strip is fitted to the inner top of the processing table 2. 8. Movable strips 8 are evenly spaced inside the processing table 2, and fixed holes 9 are evenly spaced inside the movable strips 8. The fixed holes 9 and smoke inlets 10 are staggered, and the smoke inlets 10 are evenly distributed on the top of the processing table 2. Support blocks 11 are symmetrically fixed to the lower end faces of the movable strips 8, and the joints of two movable strips 8 form a "V" shape. Adjacent movable strips 8 are closely connected, and the movable strips 8 and the inner wall of the processing table 2 are elastically slidably connected. A connecting block 12 is fixed to the bottom of one of the support blocks 11 via a rod. The connecting block 12 is slidably positioned. In the cavity inside the support plate 7, infusion holes 13 are evenly spaced at the middle position of the support plate 7, and the infusion holes 13 have a fan-shaped structure. Connecting blocks 12 seal the infusion holes 13. A fixing plate 14 is provided on the central axis of the lower end face of the support plate 7, and the fixing plate 14 is fixed to the inner bottom surface of the processing table 2. A second partition plate 15 is provided inside the fixing plate 14, and the spaces on both sides of the second partition plate 15 are interconnected with the spaces on both sides of the first partition plate 61 through two infusion holes 13. The height of the two ends of the fixing plate 14 is lower than the height of its middle section. An infusion pump 16 is installed on one side of the fixed plate 14, and a first liquid storage chamber 17 is provided on the side of the infusion pump 16. The first liquid storage chamber 17 and the second liquid storage chamber 19 are connected to each other through the lower part of the end of the fixed plate 14. An outlet valve 18 is provided on the other side of the fixed plate 14, and a second liquid storage chamber 19 is provided on the side of the outlet valve 18. The first liquid storage chamber 17 and the second liquid storage chamber 19 are respectively located in the processing table 2 on both sides of the fixed plate 14. The first liquid storage chamber 17 and the second liquid storage chamber 19 are respectively connected to the spaces on both sides of the second partition plate 15. When clamp 5 moves, it drives fixed tube 6 to move synchronously, such as Figure 8As shown, when the fixed tube 6 moves to the position where the two movable strips 8 are aligned, the inclined surface of the movable strips 8 can drive the two movable strips 8 away from each other, thus facilitating the passage of the fixed tube 6. After clamping the workpiece, the fixed tube 6 stops moving, causing the corresponding two movable strips 8 to separate. After the movable strips 8 move, the support block 11 drives the connecting block 12 to move, releasing the blockage of the infusion hole 13. Thus, during the welding process, with the operation of the infusion pump 16, the two movable strips 8 that are not pushed are in a mating state, and the corresponding connecting block 12 also blocks the corresponding infusion hole 13. Therefore, liquid will not be discharged from the infusion hole 13 at other positions, but only from the infusion hole 13 below the separated movable strips 8. Figure 5 As shown, the liquid in the first storage chamber 17 is transferred upward through the left side of the second partition plate 15, and then enters the space on the left side of the first partition plate 61 through the infusion hole 13 on the left side for upward transfer, as shown. Figure 9 As shown, the liquid then enters the heat dissipation channel 51 through the fixed pipe 6. The liquid flows in the heat dissipation channel 51, which can carry away the heat on the clamping plate 5. Then it is transferred to the space on the right side of the first partition plate 61, and then to the space on the right side of the second partition plate 15 through the liquid inlet 13 on the right side. Finally, it is transferred to the second liquid storage chamber 19 through the fixed plate 14. In this way, the hot liquid is separated from the cooling liquid, so that the hot liquid can be cooled. When the liquid in the second liquid storage chamber 19 gradually increases and exceeds the lower part of the fixed plate 14, it can flow into the first liquid storage chamber 17 for circulation. Therefore, the circulation of liquid during the welding process can achieve precise and effective cooling.

[0021] Example 2: Existing welding fixtures generate a large amount of fumes during the welding process. Traditional welding fixtures also lack precision in fume collection and cannot target fume absorption based on the welding location, resulting in a large amount of fume drifting and affecting the processing environment. Therefore, this example addresses this issue through the following technical solution: Figure 3 and Figure 9As shown, a smoke removal mechanism is provided on the side of the processing table 2, and the smoke removal mechanism includes a smoke extraction fan 20 installed on the side of the processing table 2. The smoke inlet and smoke outlet of the smoke extraction fan 20 are respectively connected to the space above the support plate 7 and the interior of the second liquid storage chamber 19. An exhaust pipe 21 is provided on the side of the second liquid storage chamber 19. After the movable bar 8 moves, it causes the fixed hole 9 to coincide with the smoke inlet hole 10. Therefore, the smoke inlet hole 10 at this position is in a connected state, while the smoke inlet holes 10 at other positions are in a blocked state. In this way, the suction force can be concentrated below the welding position when smoke extraction is performed. During the welding process, the smoke extraction fan 20 runs and generates suction force, which can draw the smoke generated at the welding position into the support plate 7 through the smoke inlet hole 10, and then transmit it to the second liquid storage chamber 19. The smoke can be filtered by the liquid in the second liquid storage chamber 19, and impurities are intercepted in the second liquid storage chamber 19. Then the gas is transmitted to the first liquid storage chamber 17 through the lower part of the fixed plate 14, and finally discharged from the exhaust pipe 21.

[0022] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A laser welding fixture for machining, comprising a base (1), wherein a machining table (2) is mounted on the top of the base (1), and clamping mechanisms are symmetrically arranged at both ends of the machining table (2); Its features are, Also includes: The clamping mechanism includes a limiting plate (3) symmetrically fixed at the edge of the processing table (2), and the internal thread of the limiting plate (3) is through an adjusting screw (4), and the end of the adjusting screw (4) is rotatably connected to a clamping plate (5). The clamping mechanism is provided with a cooling component, which is used to cool the contact position between the clamping mechanism and the workpiece, and the cooling component is interconnected with the interior of the processing table (2).

2. The laser welding fixture for machining according to claim 1, characterized in that: The cooling component includes a heat dissipation channel (51) opened in the clamp (5), and the heat dissipation channel (51) is curved. A fixing tube (6) is fixed at the bottom of the clamp (5), and the fixing tube (6) slides through the through groove inside the processing table (2).

3. A laser welding fixture for machining according to claim 2, characterized in that: The first partition plate (61) is fixed inside the fixed tube (6), and the cavities on both sides of the first partition plate (61) are connected to the two ends of the heat dissipation channel (51) respectively. The bottom of the fixed tube (6) extends into the processing table (2) and slides against the surface of the support plate (7).

4. A laser welding fixture for machining according to claim 3, characterized in that: The support plate (7) is fixed inside the processing table (2), and the inner top of the processing table (2) is fitted with a movable strip (8). The movable strip (8) is evenly distributed inside the processing table (2), and the movable strip (8) is evenly provided with fixing holes (9). At the same time, the fixing holes (9) and the smoke inlet holes (10) are staggered, and the smoke inlet holes (10) are evenly opened on the top of the processing table (2).

5. A laser welding fixture for machining according to claim 4, characterized in that: The lower end of the movable strip (8) is symmetrically fixed with a support block (11), and the joint of the two movable strips (8) forms a "V" shape. The adjacent movable strips (8) are closely connected, and the movable strip (8) and the inner wall of the processing table (2) are elastically slidably connected. Meanwhile, the bottom of one of the support blocks (11) is fixed with a connecting block (12) by a rod.

6. A laser welding fixture for machining according to claim 5, characterized in that: The connecting block (12) is slidably disposed in the cavity inside the support plate (7), and the support plate (7) has infusion holes (13) at equal intervals in the middle position, and the infusion holes (13) are fan-shaped structures, while the connecting block (12) blocks the infusion holes (13).

7. A laser welding fixture for machining according to claim 2, characterized in that: A fixing plate (14) is provided on the central axis of the lower end face of the support plate (7), and the fixing plate (14) is fixed to the inner bottom surface of the processing table (2). A second partition plate (15) is provided inside the fixing plate (14), and the space on both sides of the second partition plate (15) is connected to the space on both sides of the first partition plate (61) through two infusion holes (13).

8. A laser welding fixture for machining according to claim 7, characterized in that: The height of both ends of the fixed plate (14) is lower than the height of the middle part, and an infusion pump (16) is installed on one side of the fixed plate (14), and a first liquid storage chamber (17) is provided on the side of the infusion pump (16). At the same time, the first liquid storage chamber (17) and the second liquid storage chamber (19) are connected to each other through the lower part of the end of the fixed plate (14).

9. A laser welding fixture for machining according to claim 7, characterized in that: A liquid outlet valve (18) is provided on the other side of the fixed plate (14), and a second liquid storage chamber (19) is provided on the side of the liquid outlet valve (18). The first liquid storage chamber (17) and the second liquid storage chamber (19) are respectively located in the processing table (2) on both sides of the fixed plate (14). At the same time, the first liquid storage chamber (17) and the second liquid storage chamber (19) are respectively connected to the spaces on both sides of the second partition plate (15).

10. A laser welding fixture for machining according to claim 9, characterized in that: The processing table (2) is provided with a smoke removal mechanism on its side, and the smoke removal mechanism includes a smoke extraction fan (20) installed on the side of the processing table (2). The smoke inlet and smoke outlet of the smoke extraction fan (20) are respectively connected to the space above the support plate (7) and the interior of the second liquid storage chamber (19). An exhaust pipe (21) is provided on the side of the second liquid storage chamber (19).

Images