Self-positioning rotary jig for laser welding equipment

Abstract

The invention discloses a self-positioning rotary jig for laser welding equipment, and belongs to the technical field of welding jigs, the self-positioning rotary jig comprises a base and a welding table rotationally arranged on the base, the base is provided with a laser welding assembly, the welding table is fixedly connected with a positioning cylinder, the self-positioning rotary jig further comprises a driving disc rotationally connected in the positioning cylinder, and the driving disc is arranged on the base. A plurality of arc-shaped sliding holes are formed in the driving disc; according to the self-positioning rotating jig for the laser welding equipment, when a second motor drives a cylinder to rotate, under the supporting of a torsional spring and a baffle on the shifting plates, the multiple shifting plates synchronously rotate along with the cylinder, the multiple abutting plates abut against multiple driven plates on a rotating rod correspondingly, the multiple driven plates are driven to rotate at the same time, and then the rotating rod and a driving disc are driven to rotate; according to the welding device, the workpiece can be quickly corrected and positioned, the welding device can adapt to cylindrical workpieces of different sizes, the positioning speed of the workpiece is high, the inclined workpiece can be automatically corrected, and the welding efficiency of the workpiece can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of welding jigs, and in particular to a self-positioning rotating jig for laser welding equipment. Background Art

[0002] As a tool to assist in controlling position or motion (or both position and motion), jigs are currently widely used in various fields, and laser welding is currently a relatively advanced high-precision welding technology. Self-positioning rotary jigs are devices used to fix and rotate workpieces, and are widely used in industrial production processes such as machining, welding, and testing. They can automatically position the workpiece to a preset position and rotate the workpiece around a specific axis, making it easier for processing equipment to operate the workpiece in a circular direction.

[0003] After searching, the Chinese patent publication number CN111730203A discloses a laser welding positioning rotating fixture, including a frame, the frame is a horizontally fixed flat plate, the upper part of the frame is fixedly provided with a welding rotating clamping module, the lower part of the frame is fixedly provided with a jig rotating workbench, the jig rotating workbench includes a jig positioning platform, the jig positioning platform runs through the frame, the upper end of the jig positioning platform is provided with a rotating platform for placing a heating plate, the rotating platform is arranged above the frame, and the welding rotating clamping module includes a clamping mechanism arranged directly above the rotating platform. The above patent has the following shortcomings: Although the above patent can realize positioning welding of the workpiece, it cannot adapt to workpieces that do not have cylindrical surfaces, such as some auto parts, resulting in inability to fix, and thus cannot adapt to the welding of most cylindrical workpieces, affecting the welding efficiency. Summary of the invention

[0004] The purpose of the present invention is to solve the problem that workpieces without cylindrical surfaces cannot be welded in the prior art, thereby reducing welding efficiency, and to propose a self-positioning rotating fixture for laser welding equipment.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A self-positioning rotating fixture for laser welding equipment includes a base and a welding table rotatably arranged on the base, wherein the base is provided with a laser welding assembly, a positioning cylinder is fixedly connected to the welding table, and the base also includes a driving disk rotatably connected to the positioning cylinder, a plurality of arc-shaped sliding holes are opened on the driving disk, a plurality of sliding rods are slidably connected to the positioning cylinder, a driving rod corresponding to the arc-shaped sliding hole is fixedly connected to the bottom of each sliding rod, a positioning plate is fixedly connected to one end of each sliding rod, and a linked driving member is arranged between the driving disk and the welding table.

[0006] Preferably, a first motor is fixedly installed on the top of the base, the bottom of the welding table is fixedly connected to the output end of the first motor, the driving member includes a second motor fixedly installed on the top of the welding table, the output end of the second motor is fixedly connected to a cylinder, the top of the base is fixedly connected to a smooth annular groove, the bottom of the welding table is fixedly connected to a plurality of support rods, and the plurality of support rods are rotatably connected in the smooth annular groove.

[0007] Preferably, a plurality of toggle plates are hingedly connected around the inner wall of the cylinder, a torsion spring is fixedly connected between each toggle plate and the cylinder, a baffle corresponding to the toggle plate is fixedly connected around the inner wall of the cylinder, a rotating rod is fixedly connected to the bottom of the driving disk, one end of the rotating rod extends into the cylinder, and a plurality of driven plates are fixedly connected around the bottom of the rotating rod.

[0008] Preferably, a plurality of fixing rods are fixedly connected around the top of the welding table, and one end of each fixing rod away from the welding table is fixedly connected to the positioning cylinder. A first spring is sleeved on the sliding rod, and one end of the sliding rod away from the positioning plate is fixedly connected to a limiting block, and both ends of the first spring are respectively abutted against the limiting block and the outer wall of the positioning cylinder, and a plurality of through holes are opened on the driving disk.

[0009] Preferably, the laser welding assembly comprises a mounting frame fixedly connected to the base, a third motor is fixedly mounted on the mounting frame, a screw is fixedly connected to the output end of the third motor, and a slider is threadedly connected to the screw.

[0010] Preferably, a cylinder is fixedly connected to the bottom of the slider, a laser welding head is fixedly connected to the output end of the cylinder, a guide rod is fixedly connected to the mounting frame, the guide rod passes through the slider and is slidably connected to the slider.

[0011] Preferably, a sensor unit is fixedly installed between the toggle plate and the cylinder, a connecting strip is fixedly connected to the outer wall of the cylinder, a second trapezoidal block is fixedly connected to the end of the connecting strip away from the cylinder, a rubber plate is fixedly connected to the positioning plate, a spray hole is provided on the rubber plate, a first cavity is fixed between the positioning plate and the rubber plate, a second cavity connected to the positioning plate is provided in each of the sliding rods, an annular hose is fixed to the outside of each of the sliding rods, an air collecting barrel is fixedly connected to the welding table, an input pipe is fixed between the air collecting barrel and the annular hose, a piston plate is slidably connected in the air collecting barrel, and a push rod is fixedly connected to the piston plate.

[0012] Preferably, a first trapezoidal block is fixedly connected to the top of the push rod, a second spring is sleeved on the push rod, two ends of the second spring are respectively against the first trapezoidal block and the gas collecting barrel, the gas collecting barrel is divided into a first chamber and a second chamber, a containing barrel and a helium tank are fixedly mounted on the welding table, flux is provided in the containing barrel, and pipettes are respectively fixed on the first chamber and the second chamber of the gas collecting barrel, one of the pipettes is connected to the containing barrel, and the other is connected to the helium tank.

[0013] Preferably, a plurality of elastic sheets are fixedly connected to the top of the base, a plurality of elastic sheets are fixedly connected to the tops of the support columns, a plurality of transparent protective covers are fixedly connected to the tops of the support columns, a plurality of scrapers corresponding to the transparent protective covers are fixedly connected to the circumferential surface of the welding table, a tooth groove is provided on the outer side of the welding table, and a bearing rod is rotatably connected to the top of the base.

[0014] Preferably, the bearing rod is fixedly connected with a gear that meshes with the tooth groove of the welding table, the bearing rod is fixedly connected with a cam, the outer wall of the transparent protective cover is fixedly connected with an L-shaped plate, a knocking rod is slidably connected to the L-shaped plate, one end of the knocking rod is fixedly connected with a rubber hammer, the other end of the knocking rod is against the cam, and a third spring is sleeved on the knocking rod, and the two ends of the third spring are respectively fixedly connected to the L-shaped plate and the knocking rod.

[0015] Compared with the prior art, the present invention provides a self-positioning rotary fixture for laser welding equipment, which has the following beneficial effects: 1. The laser welding equipment uses a self-positioning rotating fixture. When the second motor drives the cylinder to rotate, multiple toggle plates rotate synchronously with the cylinder under the support of the torsion spring and the baffle plate on the toggle plate. Multiple contact plates respectively contact with multiple driven plates on the rotating rod, driving multiple driven plates to rotate simultaneously, thereby driving the rotating rod and the driving disk to rotate, so as to achieve rapid correction and positioning of the workpiece, and can adapt to cylindrical workpieces of different sizes. The positioning speed of the workpiece is fast, and the tilted workpiece can be automatically corrected, which helps to improve the welding efficiency of the workpiece; when positioning large workpieces, or positioning some workpieces with fragile materials, when After the multiple positioning plates have completed positioning the workpiece, the driving disk, the rotating rod and the multiple driven plates at the bottom of the rotating rod cannot continue to rotate. At this time, the second motor continues to drive the cylinder and the multiple toggle plates inside the cylinder to continue to rotate. At this time, the toggle plate can be compressed and rotated in the direction of the torsion spring to automatically disengage from the driven plate, thereby preventing the driven plate, the rotating rod and the driving disk from continuing to rotate, and further preventing the multiple positioning plates from continuously applying positioning force to the workpiece, which helps to automatically protect the workpiece. After the workpiece is positioned, it maintains the positioning force on the workpiece while preventing the workpiece from being deformed or broken due to excessive positioning force.

[0016] 2. The laser welding equipment uses a self-positioning rotating fixture. While the second motor continuously controls the rotation of the cylinder, while the workpiece is being positioned, the cylinder drives the second trapezoidal block to rotate through the connecting bar. When the second trapezoidal block conflicts with the first trapezoidal block, the first trapezoidal block drives the piston plate to slide toward the inner direction of the gas collecting barrel under the guidance of the push rod. At the same time, the second spring on the push rod is compressed. When the second trapezoidal block is separated from the first trapezoidal block, the second spring automatically resets the push rod and the piston plate to form a negative pressure chamber in the first chamber. The workpiece has not been positioned yet, and the toggle plate has not compressed the torsion spring at this time. At this time, the solenoid valve in the liquid pipette connected to the helium tank is automatically controlled to open through the sensor unit, and the solenoid valve in the liquid pipette of the flux is closed. Then the second trapezoidal block is repeatedly When the first trapezoidal block is in contact with the first trapezoidal block, the input pipe repeatedly inputs helium into the annular hose, and the helium passes through the second cavity between the slide bar and the positioning plate, and is ejected from the spray hole of the rubber plate, and the helium is sprayed around the surface of the workpiece, which can spray off some dust and other impurities on the workpiece, which helps to reduce the impact of impurities on the workpiece on the welding quality during the laser welding process; when the workpiece is positioned by the positioning plate, the toggle plate compresses the torsion spring, and the sensor unit controls the electromagnetic valve in the liquid suction pipe connected to the helium tank to close, and the electromagnetic valve in the liquid suction pipe connected to the flux to open, and then when the second trapezoidal plate and the first trapezoidal block are in reciprocating contact, the flux is sprayed onto the workpiece through the gap between the rubber plate and the workpiece, which helps to improve the welding quality.

[0017] 3. The laser welding equipment uses a self-positioning rotating fixture. The transparent protective cover can reduce the random splashing of sparks during welding, making it convenient to observe the welding situation. While the welding table continues to rotate, it will drive multiple scrapers to scrape along the inner wall of the transparent protective cover at the same time, and scrape off the molten metal during the welding process, making it convenient for the staff to observe the welding situation in time. While the welding table continues to rotate, the tooth groove can continuously mesh with the gear, so that the gear drives the bearing rod to rotate, and the bearing rod drives the cam to rotate when it rotates. The protruding part of the cam reciprocates and contacts with the knocking rod, driving the rubber hammer to reciprocate and knock on the outer wall of the transparent protective cover. Under the action of the support column and the elastic sheet, the transparent protective cover reciprocates and produces slight vibrations, which helps the molten liquid metal to flow to the bottom of the transparent protective cover more smoothly during the welding process on the inner wall of the transparent protective cover, which helps the staff to observe the welding situation in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a front structural schematic diagram of a self-positioning rotating fixture for laser welding equipment proposed by the present invention.

[0019] Figure 2 The present invention proposes Figure 1 Schematic diagram of the structure of part A.

[0020] Figure 3 The present invention proposes Figure 1 Schematic diagram of the structure of part B.

[0021] Figure 4 This is a schematic side structural diagram of a self-positioning rotating fixture for laser welding equipment proposed by the present invention.

[0022] Figure 5 This is a front view structural schematic diagram of a self-positioning rotating fixture for laser welding equipment proposed by the present invention.

[0023] Figure 6 The present invention proposes Figure 5 Schematic diagram of the structure of part C.

[0024] Figure 7 The schematic diagram of the top view of the structure of a driving disk in a self-positioning rotating fixture for laser welding equipment proposed by the present invention.

[0025] Figure 8 This is a schematic diagram of the structure inside a transparent protective cover in a self-positioning rotating fixture for laser welding equipment proposed by the present invention.

[0026] Fig. 9 The present invention proposes Figure 8 Schematic diagram of the structure of part D.

[0027] Fig.10 The present invention provides a schematic structural diagram of a driving disc and a driving rod in a self-positioning rotating fixture for laser welding equipment.

[0028] Fig.11 This is a schematic diagram of the structure between the inside of a cylinder and a rotating rod in a self-positioning rotating fixture for laser welding equipment proposed by the present invention.

[0029] In the figure: 1, base; 2, welding table; 3, laser welding assembly; 301, mounting frame; 302, third motor; 303, screw; 304, slider; 305, cylinder; 306, laser welding head; 307, guide rod; 4, positioning cylinder; 5, driving disk; 6, arc-shaped sliding hole; 7, sliding rod; 8, driving rod; 9, positioning plate; 10, driving member; 1001, second motor; 1002, cylinder; 1003, toggle plate; 1004, torsion spring; 1005, baffle; 1006, rotating rod; 1007, driven plate; 11, first motor; 12, fixing rod; 13, first spring; 14, limit Block; 15, rubber sheet; 16, smooth annular groove; 17, support rod; 18, annular hose; 19, gas collecting barrel; 1901, first chamber; 1902, second chamber; 20, input pipe; 21, piston plate; 22, push rod; 23, first trapezoidal block; 24, second spring; 25, holding barrel; 26, suction tube; 27, connecting strip; 28, second trapezoidal block; 29, elastic sheet; 30, support column; 31, transparent protective cover; 32, scraper; 33, tooth groove; 34, bearing rod; 35, gear; 36, cam; 37, L-shaped plate; 38, knocking rod; 39, rubber hammer; 40, third spring. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0032] Example 1: Reference Figures 1 to 11A self-positioning rotary jig for laser welding equipment includes a base 1 and a welding table 2 rotatably arranged on the base 1, a laser welding assembly 3 is arranged on the base 1, a positioning cylinder 4 is fixedly connected to the welding table 2, and also includes a driving disk 5 rotatably connected in the positioning cylinder 4, a plurality of arc-shaped sliding holes 6 are opened on the driving disk 5, a plurality of sliding rods 7 are slidably connected to the positioning cylinder 4, a driving rod 8 corresponding to the arc-shaped sliding hole 6 is fixedly connected to the bottom of each sliding rod 7, a positioning plate 9 is fixedly connected to one end of each sliding rod 7, and a linked driving member 10 is arranged between the driving disk 5 and the welding table 2. In the present invention, when welding a workpiece, the workpiece to be welded is placed in the positioning cylinder 4, and then the driving member 10 is started to control the rotation of the driving disk 5 in the positioning cylinder 4. When the driving disk 5 rotates, it drives multiple driving rods 8 to slide along the arc-shaped sliding holes 6 at the same time through the arc-shaped sliding holes 6 on the surface, and then drives multiple sliding rods 7 and the positioning plate 9 to move toward the center of the positioning cylinder 4 at the same time, so as to realize rapid positioning of the workpiece, can adapt to cylindrical workpieces of different sizes, and has a fast positioning speed for the workpiece, and can automatically correct the tilted workpiece, which helps to improve the welding efficiency of the workpiece; the positioning plate 9 is preferably arc-shaped.

[0033] Example 2: Reference Figures 1 to 11 , which is basically the same as the first embodiment, and further, a first motor 11 is fixedly installed on the top of the base 1, and the bottom of the welding table 2 is fixedly connected to the output end of the first motor 11. The driving member 10 includes a second motor 1001 fixedly installed on the top of the welding table 2, and a cylinder 1002 is fixedly connected to the output end of the second motor 1001. A smooth annular groove 16 is fixedly connected to the top of the base 1, and a plurality of support rods 17 are fixedly connected to the bottom of the welding table 2, and the plurality of support rods 17 are rotatably connected in the smooth annular groove 16. In the present invention, when the workpiece is positioned, the welding table 2 and the positioning cylinder 4 on the top of the welding table 2 can be driven to rotate simultaneously by starting the first motor 11, thereby driving the workpiece to rotate and perform laser welding. When the welding table 2 rotates, the plurality of support rods 17 can rotate in the smooth annular groove 16, which helps to make the welding table 2 and the workpiece more stable during rotation; the cylinder 1002 can be driven to rotate by starting the second motor 1001.

[0034] A plurality of toggle plates 1003 are hingedly connected around the inner wall of the cylinder 1002, a torsion spring 1004 is fixedly connected between each toggle plate 1003 and the cylinder 1002, a baffle 1005 corresponding to the toggle plate 1003 is fixedly connected around the inner wall of the cylinder 1002, a rotating rod 1006 is fixedly connected to the bottom of the driving disk 5, one end of the rotating rod 1006 extends into the cylinder 1002, and a plurality of driven plates 1007 are fixedly connected around the bottom of the rotating rod 1006. In the present invention, while the second motor 1001 drives the cylinder 1002 to rotate, under the support of the torsion spring 1004 and the baffle 1005 on the toggle plate 1003, the multiple toggle plates 1003 rotate synchronously with the cylinder 1002, and the multiple toggle plates 1003 respectively contact with the multiple driven plates 1007 on the rotating rod 1006, driving the multiple driven plates 1007 to rotate simultaneously, thereby driving the rotating rod 1006 and the driving disk 5 to rotate, so as to realize the rapid correction and positioning of the workpiece; when positioning a larger workpiece, or positioning some workpieces with fragile materials, when the multiple positioning plates 9 have completed the positioning of the workpiece, at this time the driving disk 5 and the rotating rod 1006 and the rotating rod 1006 are The multiple driven plates 1007 at the bottom of the rod 1006 cannot continue to rotate. At this time, the second motor 1001 continues to drive the cylinder 1002 and the multiple toggle plates 1003 inside the cylinder 1002 to rotate continuously. At this time, the toggle plate 1003 can be automatically disengaged from the driven plate 1007 by compressing and rotating in the direction of the torsion spring 1004, so that the driven plate 1007, the rotating rod 1006 and the driving disk 5 will not continue to rotate, and the multiple positioning plates 9 will not continue to apply a positioning force to the workpiece, which helps to automatically protect the workpiece. After the workpiece is positioned, it can maintain the positioning force on the workpiece while preventing the workpiece from being deformed or broken due to excessive positioning force.

[0035] A plurality of fixed rods 12 are fixedly connected around the top of the welding table 2, and one end of each fixed rod 12 away from the welding table 2 is fixedly connected to the positioning cylinder 4. A first spring 13 is sleeved on the slide bar 7, and one end of the slide bar 7 away from the positioning plate 9 is fixedly connected to a limiting block 14. The two ends of the first spring 13 are respectively against the limiting block 14 and the outer wall of the positioning cylinder 4, and a plurality of through holes are opened on the driving disk 5. In the present invention, the positioning cylinder 4 can be stably supported by the plurality of fixed rods 12; when the driving disk 5 rotates to control the plurality of slide bars 7 to drive the positioning plate 9 to move closer to the center of the positioning cylinder 4, the first spring 13 is compressed between the limiting block 14 and the positioning cylinder 4, and when the workpiece welding is completed, the first spring 13 helps to reset the slide bar 7 and the positioning plate 9; through the through holes on the driving disk 5, it is convenient to drop the residue generated during the welding process to avoid affecting the positioning of the workpiece.

[0036] The laser welding assembly 3 includes a mounting frame 301 fixedly connected to the base 1 , a third motor 302 is fixedly mounted on the mounting frame 301 , a screw rod 303 is fixedly connected to the output end of the third motor 302 , and a slider 304 is threadedly connected to the screw rod 303 .

[0037] The bottom of the slider 304 is fixedly connected with a cylinder 305, the output end of the cylinder 305 is fixedly connected with a laser welding head 306, and the mounting frame 301 is fixedly connected with a guide rod 307, which penetrates the slider 304 and is slidably connected with the slider 304. In the present invention, when the workpiece to be welded is positioned in the positioning cylinder 4, the screw rod 303 is driven to rotate by starting the third motor 302, and the slider 304 is guided by the guide rod 307 to slide on the screw rod 303, and the slider 304 drives the cylinder 305 and the laser welding head 306 to slide to the welding position, and then the cylinder 305 is started to drive the laser welding head 306 to adjust the position up and down, and then the first motor 11 is started to drive the welding table 2 to rotate, and the welding table 2 drives the workpiece in the top positioning cylinder 4 to rotate, and then the rotation welding is performed.

[0038] Example 3: Reference Figures 1 to 9 and Fig.11 , which is basically the same as the first embodiment, and further, a sensor unit is fixedly installed between the toggle plate 1003 and the cylinder 1002, a connecting strip 27 is fixedly connected to the outer wall of the cylinder 1002, and a second trapezoidal block 28 is fixedly connected to the end of the connecting strip 27 away from the cylinder 1002, a rubber plate 15 is fixedly connected to the positioning plate 9, a spray hole is opened on the rubber plate 15, a first cavity is fixed between the positioning plate 9 and the rubber plate 15, a second cavity connected to the positioning plate 9 is opened in each sliding rod 7, an annular hose 18 is fixed to the outside of each sliding rod 7, a gas collecting barrel 19 is fixedly connected to the welding table 2, an input pipe 20 is fixed between the gas collecting barrel 19 and the annular hose 18, a piston plate 21 is slidably connected in the gas collecting barrel 19, and a push rod 22 is fixedly connected to the piston plate 21.

[0039] A first trapezoidal block 23 is fixedly connected to the top of the push rod 22, and a second spring 24 is sleeved on the push rod 22. The two ends of the second spring 24 are respectively against the first trapezoidal block 23 and the gas collecting barrel 19. The gas collecting barrel 19 is divided into a first chamber 1901 and a second chamber 1902. A containing barrel 25 and a helium tank are fixedly installed on the welding table 2. The containing barrel 25 is provided with flux. The first chamber 1901 and the second chamber 1902 of the gas collecting barrel 19 are respectively fixed with pipettes 26, one of which is connected to the containing barrel 25, and the other is connected to the helium tank. In the present invention, since the workpieces are inevitably subject to some dust and other impurities during storage and transportation, before welding, the staff usually manually removes the dust on the workpieces. This processing method is slow and can easily reduce the welding efficiency of the workpieces. While the second motor 1001 continuously controls the rotation of the cylinder 1002, during the positioning of the workpiece, the cylinder 1002 drives the second trapezoidal block 28 to rotate through the connecting bar 27. When the second trapezoidal block 28 conflicts with the first trapezoidal block 23, the first trapezoidal block 23 drives the piston plate 21 to slide toward the inner direction of the gas collecting barrel 19 under the guidance of the push rod 22. At the same time, the second spring 24 on the push rod 22 is compressed. When the second trapezoidal block 28 is disengaged from the first trapezoidal block 23, the second spring 24 automatically resets the push rod 22 and the piston plate 21, so that a negative pressure chamber is formed in the first chamber 1901. The positioning of the workpiece is not yet completed, and the toggle plate 1003 does not compress the torsion spring 1004 at this time. At this time, the liquid in the pipette 26 connected to the helium tank is The electromagnetic valve is automatically controlled to open by the sensor unit, and the electromagnetic valve in the liquid suction pipe 26 of the soldering flux is closed. Then, when the second trapezoidal block 28 repeatedly conflicts with the first trapezoidal block 23, the input pipe 20 repeatedly inputs helium into the annular hose 18, and the helium passes through the second cavity between the slide bar 7 and the positioning plate 9, and is sprayed from the spray hole of the rubber plate 15. The helium is sprayed on the surface of the workpiece for a circle, which can spray off some dust and other impurities on the workpiece, which helps to reduce the impact of impurities on the workpiece on the welding quality during the laser welding process; when the workpiece is positioned by the positioning plate 9, the toggle plate 1003 compresses the torsion spring 1004, and the sensor unit controls the electromagnetic valve in the liquid suction pipe 26 connected to the helium tank to close, and the electromagnetic valve in the liquid suction pipe 26 connected to the soldering flux is opened, and then, while the second trapezoidal block 28 and the first trapezoidal block 23 are reciprocatingly conflicting, the soldering flux is sprayed onto the workpiece through the gap between the rubber plate 15 and the workpiece, which helps to improve the welding quality; Helium is an inert gas with high ionization energy. It can effectively reduce the formation of plasma during laser welding. When the laser energy is high, the plasma generated by the vaporization of the material will absorb and scatter the laser energy, affecting the penetration depth. Helium can make the laser penetrate the plasma better, thereby increasing the welding penetration depth. For example, when high-power laser welding thick metal plates, the use of helium can significantly improve the welding effect. Flux is mainly used to assist the welding process. It can reduce the tension on the surface of the material, making it easier for the molten metal to flow and fuse. At the same time, the flux can remove oxides and impurities on the surface of the material and improve the wettability of welding. For example, in the process of laser soft soldering such as tin soldering, the flux can help the molten tin better adhere to the surface of the workpiece and ensure the quality of the solder joint.

[0040] The sensor unit is a prior art and can automatically control the opening and closing of the solenoid valves in the two pipettes 26; Reference Fig.11 When the toggle plate 1003 rotates from position A to position B, the sensor unit controls the electromagnetic valve in the liquid suction pipe 26 connected to the helium tank to close, so that the electromagnetic valve in the liquid suction pipe 26 connected to the flux is opened.

[0041] Example 4: Reference Figures 1 to 11 , which is basically the same as the first embodiment, and further, a plurality of elastic sheets 29 are fixedly connected to the top of the base 1, a plurality of elastic sheets 29 are fixedly connected to the tops of the plurality of elastic sheets 29, a transparent protective cover 31 is fixedly connected to the tops of the plurality of support columns 30, a plurality of scrapers 32 corresponding to the transparent protective cover 31 are fixedly connected to the circumferential surface of the welding table 2, a tooth groove 33 is provided on the outer side of the welding table 2, and a bearing rod 34 is rotatably connected to the top of the base 1.

[0042] A gear 35 meshing with the tooth groove 33 of the welding table 2 is fixedly connected to the bearing rod 34, a cam 36 is fixedly connected to the bearing rod 34, an L-shaped plate 37 is fixedly connected to the outer wall of the transparent protective cover 31, a knocking rod 38 is slidably connected to the L-shaped plate 37, one end of the knocking rod 38 is fixedly connected to a rubber hammer 39, the other end of the knocking rod 38 is against the cam 36, a third spring 40 is sleeved on the knocking rod 38, and the two ends of the third spring 40 are respectively fixedly connected to the L-shaped plate 37 and the knocking rod 38. In the present invention, since some sparks are generated during the laser welding process, these sparks are easy to splash onto the equipment and the workers, which may damage the equipment and burn the workers. The transparent protective cover 31 can reduce the random splashing of sparks during welding. In order to facilitate the observation of the welding situation, while the welding table 2 is continuously rotating, it will drive multiple scrapers 32 to scrape along the inner wall of the transparent protective cover 31 at the same time, so that the molten metal in the welding process will be scraped off, which is convenient for the workers to observe the welding situation in time. While the welding table 2 is continuously rotating, the tooth groove 33 can be continuously meshed with the gear 35, so that the gear 35 drives the bearing rod 34 to rotate, and the bearing rod 34 rotates with The movable cam 36 rotates, and when the protruding portion of the cam 36 contacts the knocking rod 38, the knocking rod 38 compresses the third spring 40 and drives the rubber hammer 39 to knock on the outer wall of the transparent protective cover 31. When the protruding portion of the cam 36 does not contact the knocking rod 38, the third spring 40 automatically causes the knocking rod 38 to drive the rubber hammer 39 to reset, thereby causing reciprocating contact. Under the action of the support column 30 and the elastic sheet 29, the transparent protective cover 31 reciprocates and produces slight vibration, thereby helping the molten liquid metal to flow more smoothly to the bottom of the transparent protective cover 31 during the welding process on the inner wall of the transparent protective cover 31, and helping the staff to observe the welding situation in time.

[0043] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A self-positioning rotary fixture for laser welding equipment, comprising: A base (1) and a welding table (2) rotatably arranged on the base (1), wherein a laser welding assembly (3) is arranged on the base (1), characterized in that a positioning cylinder (4) is fixedly connected to the welding table (2), and further comprising: A driving disk (5) is rotatably connected to the positioning cylinder (4), a plurality of arc-shaped sliding holes (6) are formed on the driving disk (5), a plurality of sliding rods (7) are slidably connected to the positioning cylinder (4), a driving rod (8) corresponding to the arc-shaped sliding hole (6) is fixedly connected to the bottom of each sliding rod (7), a positioning plate (9) is fixedly connected to one end of each sliding rod (7), and a linked driving member (10) is provided between the driving disk (5) and the welding table (2).

2. The self-positioning rotating fixture for laser welding equipment according to claim 1, characterized in that: A first motor (11) is fixedly mounted on the top of the base (1), the bottom of the welding platform (2) is fixedly connected to the output end of the first motor (11), the driving member (10) comprises a second motor (1001) fixedly mounted on the top of the welding platform (2), the output end of the second motor (1001) is fixedly connected to a cylinder (1002), the top of the base (1) is fixedly connected to a smooth annular groove (16), the bottom of the welding platform (2) is fixedly connected to a plurality of support rods (17), and the plurality of support rods (17) are rotatably connected in the smooth annular groove (16).

3. The self-positioning rotary fixture for laser welding equipment according to claim 2, characterized in that: A plurality of toggle plates (1003) are hingedly connected around the inner wall of the cylinder (1002); a torsion spring (1004) is fixedly connected between each of the toggle plates (1003) and the cylinder (1002); a baffle plate (1005) corresponding to the toggle plate (1003) is fixedly connected around the inner wall of the cylinder (1002); a rotating rod (1006) is fixedly connected to the bottom of the driving disk (5); one end of the rotating rod (1006) extends into the cylinder (1002); and a plurality of driven plates (1007) are fixedly connected around the bottom of the rotating rod (1006).

4. The self-positioning rotating fixture for laser welding equipment according to claim 1, characterized in that: A plurality of fixing rods (12) are fixedly connected around the top of the welding table (2), and one end of each fixing rod (12) away from the welding table (2) is fixedly connected to the positioning cylinder (4). A first spring (13) is sleeved on the sliding rod (7), and one end of the sliding rod (7) away from the positioning plate (9) is fixedly connected to a limiting block (14). Two ends of the first spring (13) respectively abut against the limiting block (14) and the outer wall of the positioning cylinder (4), and a plurality of through holes are opened on the driving disk (5).

5. The self-positioning rotary fixture for laser welding equipment according to claim 1, characterized in that: The laser welding assembly (3) comprises a mounting frame (301) fixedly connected to the base (1), a third motor (302) being fixedly mounted on the mounting frame (301), a screw rod (303) being fixedly connected to the output end of the third motor (302), and a slider (304) being threadedly connected to the screw rod (303).

6. The self-positioning rotary fixture for laser welding equipment according to claim 5, characterized in that: The bottom of the slider (304) is fixedly connected to a cylinder (305), the output end of the cylinder (305) is fixedly connected to a laser welding head (306), the mounting frame (301) is fixedly connected to a guide rod (307), the guide rod (307) passes through the slider (304) and is slidably connected to the slider (304).

7. The self-positioning rotary fixture for laser welding equipment according to claim 3, characterized in that: A sensor unit is fixedly installed between the toggle plate (1003) and the cylinder (1002); a connecting strip (27) is fixedly connected to the outer wall of the cylinder (1002); a second trapezoidal block (28) is fixedly connected to the end of the connecting strip (27) away from the cylinder (1002); a rubber plate (15) is fixedly connected to the positioning plate (9); a spray hole is provided on the rubber plate (15); a first cavity is fixedly provided between the positioning plate (9) and the rubber plate (15); a second cavity connected to the positioning plate (9) is provided in each of the slide bars (7); an annular hose (18) is fixedly provided on the outside of each of the slide bars (7); a gas collecting barrel (19) is fixedly connected to the welding table (2); an input pipe (20) is fixedly provided between the gas collecting barrel (19) and the annular hose (18); a piston plate (21) is slidably connected to the gas collecting barrel (19); a push rod (22) is fixedly connected to the piston plate (21).

8. The self-positioning rotary fixture for laser welding equipment according to claim 7, characterized in that: The top of the push rod (22) is fixedly connected to a first trapezoidal block (23), and a second spring (24) is sleeved on the push rod (22). The two ends of the second spring (24) are respectively against the first trapezoidal block (23) and the gas collecting barrel (19). The gas collecting barrel (19) is divided into a first chamber (1901) and a second chamber (1902). A storage barrel (25) and a helium tank are fixedly mounted on the welding table (2). The storage barrel (25) is provided with soldering flux. The first chamber (1901) and the second chamber (1902) of the gas collecting barrel (19) are respectively fixed with liquid suction tubes (26), one of which is connected to the storage barrel (25), and the other is connected to the helium tank.

9. The self-positioning rotating fixture for laser welding equipment according to claim 1, characterized in that: A plurality of elastic sheets (29) are fixedly connected to the top of the base (1), a plurality of elastic sheets (29) are fixedly connected to the tops of the plurality of elastic sheets (29), a transparent protective cover (31) is fixedly connected to the tops of the plurality of support columns (30), a plurality of scrapers (32) corresponding to the transparent protective cover (31) are fixedly connected to a peripheral surface of the welding table (2), a tooth groove (33) is provided on the outer side of the welding table (2), and a bearing rod (34) is rotatably connected to the top of the base (1).

10. The self-positioning rotating fixture for laser welding equipment according to claim 9, characterized in that: The bearing rod (34) is fixedly connected to a gear (35) meshing with a tooth groove (33) of the welding table (2); the bearing rod (34) is fixedly connected to a cam (36); an L-shaped plate (37) is fixedly connected to the outer wall of the transparent protective cover (31); a knocking rod (38) is slidably connected to the L-shaped plate (37); one end of the knocking rod (38) is fixedly connected to a rubber hammer (39); the other end of the knocking rod (38) abuts against the cam (36); a third spring (40) is sleeved on the knocking rod (38); two ends of the third spring (40) are respectively fixedly connected to the L-shaped plate (37) and the knocking rod (38).

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