Laser welding device for vacuum pump shell

Abstract

The invention provides a laser welding device for a vacuum pump shell, and relates to the technical field of laser welding devices.The laser welding device is characterized in that two vertical supporting frames are arranged on the ground at the adjacent positions of the rear side of a rectangular base in a bilateral symmetry mode, and two transverse supporting rail shafts are symmetrically welded between the two vertical supporting frames; an L-shaped sliding rod is jointly installed on the two transverse support rail shafts in a sliding mode, and a laser welding gun is fastened to the head end of the L-shaped sliding rod in a threaded mode. The L-shaped calibration rod is used for calibrating and aligning the laser welding gun and the butt joint gap; and when sliding to the left end and the right end of the two transverse support rail shafts, the L-shaped sliding rods abut against and make contact with the head ends of the two longitudinal support driving rods correspondingly. Through power transmission of the longitudinal support driving rod, the sliding driving piece can be indirectly driven by left-right sliding driving force of the L-shaped sliding rod in the welding process to slide towards or away from the vertical support supporting plate, vacancy driving and contraction and return driving of the L-shaped calibration rod are implemented, and compared with the prior art that the L-shaped calibration rod is manually driven to contract and return, operation and use are convenient and fast.

Description

Technical Field

[0001] This invention relates to the field of laser welding equipment technology, and more particularly to a laser welding equipment for vacuum pump housings. Background Technology

[0002] Vacuum pump housings are typically made by winding steel plates of a certain thickness. After the steel plates are wound into a cylindrical structure, there are butt joints between the two ends. These butt joints need to be welded to maintain the shape of the vacuum pump housing. Laser welding technology is widely used in the processing and manufacturing of vacuum pump housings due to its high efficiency and precision.

[0003] Existing laser welding equipment often includes a reference calibration component for rapid alignment of the butt joint on the vacuum pump housing and the laser welding torch. To avoid obstructing or interfering with the hoisting and unloading of the vacuum pump housing, or to prevent damage from collisions with the housing during loading and unloading, this component is often designed to be sliding and retractable. However, retracting the reference calibration component when not in use requires manual effort, which is cumbersome and inconvenient. Furthermore, manually retracting the component may result in forgetting to retract it, potentially causing it to break or be damaged. Summary of the Invention

[0004] In view of this, the present invention provides a laser welding device for vacuum pump housings to solve the problem that the shrinkage operation of reference calibration components when idle requires additional manual effort, which is cumbersome and inconvenient to operate.

[0005] The technical solution proposed in this invention is: a laser welding device for a vacuum pump housing, specifically comprising: a rectangular base and a vacuum pump housing, wherein the vacuum pump housing is provided with a long strip-shaped butt joint to be welded; Two vertical mounting frames are symmetrically arranged on the ground at adjacent positions on the left and right sides of the rectangular base. Each vertical mounting frame is welded together from a vertical support plate and a T-shaped base. The upper half of the vertical support plate has a hexagonal positioning shaft and a hexagonal track shaft welded at intervals. A longitudinal support drive rod is slidably mounted on the hexagonal track shaft, and a sliding drive component is slidably mounted on the hexagonal positioning shaft. An L-shaped calibration rod is slidably mounted through the top of the vertical support plate, and a limit plate is welded to the tail end of the L-shaped calibration rod. The sliding drive component consists of a top-to-bottom... The system consists of two slip rings, one large and one small, welded together. The small slip ring slides with the hexagonal positioning shaft via a spring push, while the large slip ring slides with the cross brace section of the L-shaped calibration rod. A rectangular sliding sleeve is slidably fitted onto the portion of the vertical support plate between the hexagonal positioning shaft and the hexagonal track shaft. A first connecting rod is symmetrically mounted between the rectangular sliding sleeve and the small slip ring. Two second connecting rods are symmetrically mounted between the rectangular sliding sleeve and the tail end of the longitudinal support drive rod. When the sliding drive component slides away from the vertical support plate, the large slip ring abuts against the limiting plate. Two vertical support frames are symmetrically arranged on the ground at adjacent positions on the rear side of the rectangular base. Two horizontal support rails are symmetrically welded between the two vertical support frames. An L-shaped slide rod is slidably installed on both horizontal support rails. The first end of the L-shaped slide rod is threaded tightly to a laser welding gun. The L-shaped calibration rod is used to calibrate and align the laser welding gun and the butt joint. When the L-shaped slide rod slides to the left and right ends of the two horizontal support rails, it abuts against the first ends of the two longitudinal support drive rods respectively.

[0006] Furthermore, two arc-shaped support plates are symmetrically welded above the top of the two short side plates of the rectangular base, and the vacuum pump housing is supported and placed on the two arc-shaped support plates. Three equally spaced rubber guide wheels are rotatably mounted on the arc-shaped support plate, and the vacuum pump housing rolls against the rubber guide wheels; A driven synchronous pulley is fitted at the tail end of the rubber guide wheel shaft on the bottom side.

[0007] Furthermore, the vertical support frame is composed of a U-shaped vertical support frame and a ground contact plate welded to the bottom of the U-shaped vertical support frame. The left and right ends of the horizontal support track shaft are welded and fixed together with the longitudinal support side rods of the two U-shaped vertical support frames, and a horizontal support screw is rotatably installed between the middle parts of the longitudinal support side rods of the two U-shaped vertical support frames. The left side thread of the middle part of the longitudinal support side rod of the U-shaped vertical support frame on the left is fitted with a first motor, and the first motor is connected to the cross brace screw shaft for transmission.

[0008] Furthermore, the tail end of the L-shaped slide bar is welded with a longitudinal support slide plate, which slides in conjunction with two transverse support track shafts, and the transverse support screw is screwed through and screwed into the middle part of the longitudinal support slide plate.

[0009] Furthermore, the two L-shaped calibration rods and the laser welding gun are positioned in the vertical direction and are located on the same vertical reference plane. The horizontal support section of the L-shaped calibration rod has a hexagonal structure, and the diameter of the large slip ring is greater than the width of the horizontal support section of the L-shaped calibration rod.

[0010] Furthermore, a protruding mounting plate is welded to the left short side plate of the rectangular base, and two vertical short support plates are symmetrically welded to the top of the protruding mounting plate. A worm gear is rotatably installed between the tops of the two vertical short support plates. Two vertical lugs are symmetrically welded to the middle of the top of the two short side plates of the rectangular base. A cross brace shaft is rotatably installed between the two vertical lugs. A worm gear is fitted on the left end of the cross brace shaft, and the worm gear meshes with the worm for transmission. Both the right and left ends of the cross brace shaft are fitted with active synchronizing pulleys, and a synchronizing belt is tensioned between the active and driven synchronizing pulleys.

[0011] Furthermore, a second motor is threadedly fastened to the top of the vertical short support plate on the front side, and the second motor is connected to the worm shaft for transmission.

[0012] Furthermore, the top of the rectangular base is threadedly fitted with a shaft cover at the location of the cross brace pivot. The shaft cover has a U-shaped cross section and is fitted onto the cross brace pivot.

[0013] The laser welding apparatus for vacuum pump housings provided by this invention has the following beneficial effects: First, the L-shaped calibration rod allows for convenient and quick alignment of the butt joint and laser welding gun for welding, which indirectly improves the welding efficiency of the vacuum pump housing.

[0014] Second, through the power transmission of the longitudinal support drive rod, the sliding drive component can indirectly utilize the left and right sliding driving force of the L-shaped slide rod during the welding process to slide towards or away from the vertical support plate, thereby implementing the empty position and driving the retraction and return of the L-shaped calibration rod. This eliminates the trouble of manually driving the sliding drive component to slide into the empty position and keeping it in the empty position when using the L-shaped calibration rod for sliding extension calibration before each welding operation, and also eliminates the trouble of manually driving the L-shaped calibration rod to retract and return after each calibration operation. Compared with the existing technology of manually driving the L-shaped calibration rod to retract and return, the operation is convenient and avoids the situation where the L-shaped calibration rod is damaged by the impact of the vacuum pump housing during the hoisting and unloading process due to forgetting to manually retract and return. It has better practicality.

[0015] Third, the shaft cover is placed over the cross brace shaft. First, it can provide anti-collision protection for the cross brace shaft. Second, it can cover the gap between the cross brace shaft and the ground, avoiding the trouble of accidentally threading the wire rope into the gap between the cross brace shaft and the ground when hoisting the vacuum pump housing by threading the wire rope through the bottom of the vacuum pump housing. This helps to improve the convenience and efficiency of the vacuum pump housing hoisting and unloading operations to a certain extent. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings of the embodiments will be briefly described below.

[0017] The accompanying drawings described below are only related to some embodiments of the invention and are not intended to limit the invention.

[0018] In the attached diagram, the width of the rectangular base is marked as the front and back sides, and the length is marked as the left and right sides: Figure 1 A schematic diagram of the overall front structure of the present invention is shown; Figure 2 A schematic diagram of the overall rear structure of the present invention is shown; Figure 3 A schematic diagram showing the installation position of the vertical mounting bracket of the present invention is shown; Figure 4 A schematic diagram of the mounting position of the shaft cover of the present invention is shown; Figure 5 A schematic diagram of the shaft cover disassembled state of the present invention is shown; Figure 6 A schematic diagram of the sliding installation of the L-shaped slide bar of the present invention is shown; Figure 7 A schematic diagram of the sliding drive component of the present invention sliding toward the vertical support plate is shown. Figure 8 A schematic diagram of the initial state of the sliding drive component of the present invention is shown; Figure 9 A schematic diagram of the sliding drive structure of the present invention is shown.

[0019] List of reference numerals in the attached diagram: 1. Rectangular base; 101. Arc-shaped support plate; 102. Rubber guide wheel; 1021. Driven synchronous pulley; 103. Protruding mounting plate; 104. Vertical short support plate; 105. Worm gear; 2. Vacuum pump housing; 3. Vertical mounting bracket; 301. Vertical support plate; 3011. Hexagonal track shaft; 3012. Hexagonal positioning shaft; 302. T-shaped base; 303. L-shaped calibration rod; 3031. Limiting plate 304. Longitudinal brace drive rod; 305. Sliding drive component; 306. Rectangular sliding sleeve; 307. First connecting rod; 308. Second connecting rod; 4. L-shaped sliding rod; 401. Longitudinal brace slide plate; 5. Shaft cover; 6. Laser welding gun; 7. Vertical brace support frame; 701. U-shaped vertical brace frame; 702. Horizontal brace track shaft; 703. Horizontal brace screw; 8. Horizontal brace pivot; 801. Active synchronous pulley; 802. Worm gear; 9. First motor; 11. Second motor. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this invention. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the described embodiments of this invention without creative effort are within the scope of protection of this invention.

[0021] Please refer to Figures 1 to 9 One embodiment provided by the present invention: This invention proposes a laser welding device for a vacuum pump housing, comprising: a rectangular base 1 and a vacuum pump housing 2, wherein the vacuum pump housing 2 has a long strip-shaped butt joint to be welded; two arc-shaped support plates 101 are symmetrically welded above the top of the two short side plates of the rectangular base 1, and the vacuum pump housing 2 is supported and placed on the two arc-shaped support plates 101; three equally spaced rubber guide wheels 102 are rotatably mounted on the arc-shaped support plates 101, and the vacuum pump housing 2 rolls against the rubber guide wheels 102; a driven synchronous wheel 1021 is fitted at the tail end of the rotating shaft of the bottom rubber guide wheel 102; Rubber guide wheels 102 on the two arc-shaped support plates 101 are used to roll and guide the vacuum pump housing 2, which facilitates the circumferential rotation and adjustment of the vacuum pump housing 2, and calibrates and aligns the butt joint and the laser welding gun 6. The vacuum pump housing 2 is loaded and unloaded on the two arc-shaped support plates 101 by means of wire rope hoisting. Two vertical mounting frames 3 are symmetrically arranged on the ground at adjacent positions on the left and right sides of the rectangular base 1. The vertical mounting frame 3 is composed of a vertical support plate 301 and a T-shaped base 302 welded together. The upper half of the vertical support plate 301 is welded with a hexagonal positioning shaft 3012 and a hexagonal track shaft 3011 at intervals. A longitudinal support drive rod 304 is slidably mounted on the hexagonal track shaft 3011, and a sliding drive component 305 is slidably mounted on the hexagonal positioning shaft 3012. An L-shaped calibration rod 303 is slidably mounted through the top of the vertical support plate 301, and a limit plate 3031 is welded to the tail end of the L-shaped calibration rod 303. The sliding drive component 305 is composed of upper and lower... The system consists of two slip rings, one large and one small, welded together. The small slip ring slides with the hexagonal positioning shaft 3012 via a spring push, while the large slip ring slides with the horizontal support section of the L-shaped calibration rod 303. A rectangular slip sleeve 306 is slidably fitted on the vertical support plate 301 between the hexagonal positioning shaft 3012 and the hexagonal track shaft 3011. A first connecting rod 307 is symmetrically mounted between the rectangular slip sleeve 306 and the small slip ring. Two second connecting rods 308 are symmetrically mounted between the rectangular slip sleeve 306 and the tail end of the longitudinal support drive rod 304. When the sliding drive component 305 slides away from the vertical support plate 301, the large slip ring abuts against the limiting plate 3031. Two vertical support frames 7 are symmetrically arranged on the ground adjacent to the rear side of the rectangular base 1. Two horizontal support track shafts 702 are symmetrically welded between the two vertical support frames 7. An L-shaped slide rod 4 is slidably installed on the two horizontal support track shafts 702. The first end of the L-shaped slide rod 4 is threadedly fastened to a laser welding gun 6. Two L-shaped calibration rods 303 are positioned corresponding to the laser welding gun 6 in the vertical direction and are located on the same vertical reference plane. The L-shaped calibration rods 303 are used to calibrate and align the laser welding gun 6 and the butt joint. When the L-shaped slide rod 4 slides to the left and right ends of the two horizontal support track shafts 702, it abuts against the first ends of the two longitudinal support drive rods 304 respectively. When welding the butt joint, the butt joint and the laser welding gun 6 need to be aligned. Since the two L-shaped calibration rods 303 correspond to the laser welding gun 6 in the vertical direction and are located on the same vertical reference plane, the vacuum pump housing 2 can be rotated and adjusted to align the butt joint on it with the vertical section of the L-shaped calibration rod 303, thus indirectly aligning the butt joint with the laser welding gun 6. The L-shaped calibration rod 303 can be used to conveniently and quickly align the butt joint and the laser welding gun 6 for welding, which helps to indirectly improve the welding efficiency of the vacuum pump housing 2. When using the calibration and alignment, the L-shaped calibration rod 303 slides out towards the vacuum pump housing 2, with the vertical section at the head abutting against the left or right end of the vacuum pump housing 2. The two first connecting rods 307, the rectangular sliding sleeve 306, and the sliding drive component 305 are connected to form a crank-slider mechanism. Through this mechanism, sliding the rectangular sliding sleeve 306 downwards can drive the sliding drive component 305 to slide towards the vertical support plate 301. The rectangular sliding sleeve 306, the second connecting rod 308, and the longitudinal support drive rod 304 are also connected to form a crank-slider mechanism. Through this mechanism, sliding the longitudinal support drive rod 304 towards the vertical support plate 301 can drive the rectangular sliding sleeve 306 upwards, controlling the sliding drive component 305 to slide towards the vertical support plate 301. When the sliding drive component 305 slides towards the vertical support plate 301, it compresses the spring on the hexagonal positioning shaft 3012, and provides sufficient space on the L-shaped calibration rod 303 for it to slide towards the vacuum pump housing 2 (refer to...). Figure 7 When the longitudinal support drive rod 304 is released, the spring on the hexagonal positioning shaft 3012 loses the pushing and holding force from the longitudinal support drive rod 304, and can automatically rebound to drive the sliding drive component 305 away from the vertical support plate 301 to slide and reset. When the sliding drive component 305 slides and resets, it abuts against the limiting plate 3031, and pushes to drive the L-shaped calibration rod 303 away from the vertical support plate 301 to slide and retract to reset to the initial state (refer to...). Figure 8 Furthermore, when sliding and resetting, the sliding drive 305 can push and drive the rectangular sliding sleeve 306 upward to slide and reset, and push and drive the longitudinal support drive rod 304 away from the vertical support plate 301 to slide and reset. The vertical support frame 7 is composed of a U-shaped vertical support frame 701 and a ground contact plate welded to the bottom of the U-shaped vertical support frame 701. The left and right ends of the horizontal support track shaft 702 are welded and fixed to the longitudinal support side rods of the two U-shaped vertical support frames 701, and a horizontal support screw 703 is rotatably installed between the middle parts of the longitudinal support side rods of the two U-shaped vertical support frames 701. The left side of the middle part of the longitudinal support side rod of the left U-shaped vertical support frame 701 is threaded with a first motor 9, and the first motor 9 is shaft-connected to the horizontal support screw 703 for transmission. The tail end of the L-shaped slide rod 4 is welded with a longitudinal support slide plate 401, which slides with the two horizontal support track shafts 702, and the horizontal support screw 703 is screwed through the middle part of the longitudinal support slide plate 401. Through the cross bracing screw 703, the first motor 9 can rotate in both directions to drive the L-shaped slide rod 4 and the laser welding gun 6 to slide back and forth along the butt joint to weld the butt joint; after one welding is completed, the L-shaped slide rod 4 and the laser welding gun 6 are pushed to the left or right end of the two cross bracing track shafts 702 and separated from the vacuum pump housing 2. At this time, the L-shaped slide rod 4 abuts against the first end of the longitudinal support drive rod 304 (refer to...). Figure 1The longitudinal support drive rod 304 can be pushed and driven away from the vertical support plate 301 to slide, controlling the sliding drive component 305 to compress the spring on the hexagonal positioning shaft 3012 and slide towards the vertical support plate 301. This prepares for the sliding extension calibration of the L-shaped calibration rod 303 when it is used for welding again. Before welding again, the L-shaped calibration rod 303 needs to be calibrated by sliding extension. Then, when welding again, as the L-shaped slide rod 4 and the laser welding gun 6 are pushed towards the vacuum pump housing 2, the L-shaped slide rod 4 gradually separates from the longitudinal support drive rod 304. During this process, the spring on the hexagonal positioning shaft 3012 gradually loses the pushing and holding force from the L-shaped slide rod 4, and automatically rebounds and pushes the sliding drive component 305 away from the vertical support plate 301 to slide back to its original position. It also pushes and drives the L-shaped calibration rod 303 to retract back to its original position, thereby transmitting power through the longitudinal support drive rod 304. The sliding drive component 305 can indirectly utilize the left and right sliding driving force of the L-shaped slide rod 4 during the welding process to slide towards or away from the vertical support plate 301, thereby moving out of the empty space or driving the L-shaped calibration rod 303 to retract and return to its original position. This eliminates the trouble of manually driving the sliding drive component 305 to slide out of the empty space and keeping the sliding drive component 305 in the empty space state when the L-shaped calibration rod 303 is calibrated before each welding operation, and also eliminates the trouble of manually driving the L-shaped calibration rod 303 to retract and return to its original position after each calibration operation. Compared with the existing technology of manually driving the L-shaped calibration rod 303 to retract and return to its original position, it is more convenient to operate and avoids the situation where the L-shaped calibration rod 303 is damaged by the impact of the vacuum pump housing 2 during the hoisting and unloading process due to forgetting to manually retract and return to its original position. It has better practicality. It is worth noting that the L-shaped calibration rod 303 should be selected for calibration on the side where the L-shaped slide bar 4 and the laser welding gun 6 stop. After the laser welding gun 6 is driven to disengage from the butt joint and the welding of the butt joint is completed, the welding circuit formed between the laser welding gun 6 and the vacuum pump housing 2 is broken and the welding output is automatically stopped. When the L-shaped slide bar 4 and the laser welding gun 6 are pushed to the left or right end of the two cross bracing track shafts 702 after a welding is completed, the first motor 9 should be manually turned off in time to prevent the L-shaped slide bar 4 from being continuously pushed and sliding against the longitudinal support side rod of the vertical support frame 7, which would block and restrict the normal rotation of the cross bracing screw 703 and the first motor 9, causing the first motor 9 to be overloaded and burned out.

[0022] Preferably, the cross brace of the L-shaped calibration rod 303 has a hexagonal structure, and the diameter of the large slip ring is greater than the width of the cross brace of the L-shaped calibration rod 303.

[0023] Preferably, a protruding mounting plate 103 is welded to the left short side plate of the rectangular base 1, and two vertical short support plates 104 are symmetrically welded to the top of the protruding mounting plate 103. A worm gear 105 is rotatably installed between the tops of the two vertical short support plates 104. Two vertical lugs are symmetrically welded to the middle of the tops of the two short side plates of the rectangular base 1. A cross brace shaft 8 is rotatably installed between the two vertical lugs. A worm wheel 802 is fitted on the left end of the cross brace shaft 8, and the worm wheel 802 meshes with the worm gear 105 for transmission. A drive synchronous pulley 801 is fitted on both the right and left ends of the cross brace shaft 8. A synchronous belt is tensioned between the drive synchronous pulley 801 and the driven synchronous pulley 1021.

[0024] Preferably, a second motor 11 is threadedly fastened to the top of the front vertical short support plate 104, and the second motor 11 is shaft-connected to the worm gear 105 for transmission. The worm 105 and the worm wheel 802 together form a worm gear mechanism. Through the worm gear mechanism, the second motor 11 can drive the cross brace shaft 8 to rotate in both directions. Through two synchronous belts, the cross brace shaft 8 can drive the two rubber guide wheels 102 on the bottom side of the two arc-shaped support plates 101 to rotate in both directions. The rotation of the two rubber guide wheels 102 on the bottom side can roll and drive the vacuum pump housing 2 to rotate in both directions for adjustment, and to calibrate and align the butt joint and the laser welding gun 6. Through the self-locking characteristic of the worm gear mechanism, the vacuum pump housing 2 can be positioned in real time during the rotation adjustment process, keeping the butt joint aligned with the laser welding gun 6.

[0025] Preferably, the top of the rectangular base 1 is threadedly fastened to the shaft cover 5 at the position where the cross brace shaft 8 is located. The shaft cover 5 has a U-shaped cross section and is fitted onto the cross brace shaft 8. The shaft cover 5 is fitted over the cross brace shaft 8. Firstly, it can provide anti-collision protection for the cross brace shaft 8. Secondly, it can cover the gap between the cross brace shaft 8 and the ground, avoiding the trouble of having the end of the wire rope accidentally threaded into the gap between the cross brace shaft 8 and the ground when hoisting the vacuum pump housing 2 by threading the wire rope through the bottom of the vacuum pump housing 2. This helps to improve the convenience and efficiency of the hoisting and unloading operation of the vacuum pump housing 2 to a certain extent.

[0026] The forward and reverse control circuits of the first motor 9 and the second motor 11, the electrical components used in the circuits (such as contactors, buttons, thermal relays, etc.), and the connection and wiring methods between the electrical components are all existing technologies, so they will not be described in detail here.

[0027] Working principle: The vacuum pump housing 2 is supported and placed on two arc-shaped support plates 101. The vacuum pump housing 2 is hoisted on the two arc-shaped support plates 101 by steel wire rope for loading and unloading. When welding the butt joint, the butt joint and the laser welding gun 6 need to be aligned. Since the two L-shaped calibration rods 303 correspond to the laser welding gun 6 in the vertical direction and are located on the same vertical reference plane, the vacuum pump housing 2 is rotated and adjusted to align the butt joint on it with the vertical section of the L-shaped calibration rod 303. This indirectly aligns the butt joint with the laser welding gun 6. When used for alignment, the L-shaped calibration rod 303 slides out towards the vacuum pump housing 2, and the vertical section at the first end abuts against the left or right end of the vacuum pump housing 2. The two first connecting rods 307, the rectangular sliding sleeve 306, and the sliding drive component 305 are connected to form a crank-slider mechanism. Through this mechanism, sliding the rectangular sliding sleeve 306 downward can drive the sliding drive component 305 to slide towards the vertical support plate 301. The rectangular sliding sleeve 306, the second connecting rod 308, and the longitudinal support drive rod 304 are connected to form a crank-slider mechanism. Through this mechanism, sliding the longitudinal support drive rod 304 towards the vertical support plate 301 can drive the rectangular sliding sleeve 306 to slide upward, controlling the sliding drive component 305 to slide towards the vertical support plate 301. When the sliding drive component 305 slides towards the vertical support plate 301, the spring on the hexagonal positioning shaft 3012 is compressed, and a margin of movement is left on the L-shaped calibration rod 303 for the L-shaped calibration rod 303 to slide towards the vacuum pump housing 2 (refer to...). Figure 7 When the longitudinal support drive rod 304 is released, the spring on the hexagonal positioning shaft 3012 loses the pushing and holding force from the longitudinal support drive rod 304, and can automatically rebound to drive the sliding drive component 305 away from the vertical support plate 301 to slide and reset. When the sliding drive component 305 slides and resets, it abuts against the limiting plate 3031, and pushes to drive the L-shaped calibration rod 303 away from the vertical support plate 301 to slide and retract to reset to the initial state (refer to...). Figure 8 Furthermore, when the sliding drive component 305 is sliding and resetting, it can push and drive the rectangular sliding sleeve 306 upward and slide and reset, and also push and drive the longitudinal support drive rod 304 away from the vertical support plate 301 and slide and reset. Through the cross bracing screw 703, the first motor 9 can rotate in both directions to drive the L-shaped slide rod 4 and the laser welding gun 6 to slide back and forth along the butt joint to weld the butt joint. After one welding operation is completed, when the L-shaped slide rod 4 and the laser welding gun 6 are pushed to the left or right end of the two cross bracing track shafts 702 and detached from the vacuum pump housing 2, the L-shaped slide rod 4 abuts against the first end of the longitudinal support drive rod 304 (refer to...). Figure 1The vertical support drive rod 304 can be pushed and driven away from the vertical support plate 301 to slide. The sliding drive component 305 compresses the spring on the hexagonal positioning shaft 3012 towards the sliding space of the vertical support plate 301 and maintains it in the sliding space. This prepares for the sliding extension calibration of the L-shaped calibration rod 303 when it is used for welding again. When welding is performed again, the L-shaped slide rod 4 and the laser welding gun 6 are pushed towards the vacuum pump housing 2 (when welding is performed again, the L-shaped calibration rod 303 is in the sliding extension calibration state). The L-shaped slide rod 4 gradually separates from the vertical support drive rod 304. During this process, the spring on the hexagonal positioning shaft 3012 gradually loses the pushing and holding force from the L-shaped slide rod 4. The automatic rebound push drives the sliding drive component 305 away from the vertical support plate 301 to slide and reset, and pushes the L-shaped calibration rod 303 to retract back to its original position. The worm 105 and the worm wheel 802 together form a worm gear mechanism. Through the worm gear mechanism, the second motor 11 can drive the cross brace shaft 8 to rotate in both directions. Through two synchronous belts, the cross brace shaft 8 can drive the two rubber guide wheels 102 on the bottom side of the two arc-shaped support plates 101 to rotate in both directions. The rotation of the two rubber guide wheels 102 on the bottom side can roll and drive the vacuum pump housing 2 to rotate in both directions for adjustment, and to calibrate and align the butt joint and the laser welding gun 6. Through the self-locking characteristic of the worm gear mechanism, the vacuum pump housing 2 can be positioned in real time during the rotation adjustment process, keeping the butt joint aligned with the laser welding gun 6.

[0028] The following points should be noted in this article: 1. The accompanying drawings of the embodiments of the present invention only involve the structures involved in the embodiments of the present invention; other structures can refer to general designs.

[0029] 2. Where there is no conflict, the embodiments of the present invention and the features thereof can be combined with each other to obtain new embodiments.

[0030] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

1. A laser welding apparatus for vacuum pump housings, comprising: A rectangular base (1) and a vacuum pump housing (2), wherein a long strip-shaped butt joint to be welded is provided on the vacuum pump housing (2); The feature is that two vertical mounting frames (3) are symmetrically arranged on the ground at adjacent positions on the left and right sides of the rectangular base (1). The vertical mounting frame (3) is composed of a vertical support plate (301) and a T-shaped base (302) welded together. The upper half of the vertical support plate (301) is welded with a hexagonal positioning shaft (3012) and a hexagonal track shaft (3011) at intervals. A longitudinal support drive rod (304) is slidably mounted on the hexagonal track shaft (3011), and a sliding drive component (305) is slidably mounted on the hexagonal positioning shaft (3012). An L-shaped calibration rod (303) is slidably mounted through the top of the vertical support plate (301), and a limit plate (3031) is welded to the tail end of the L-shaped calibration rod (303). The sliding drive component (304) is slidably mounted through the top of the vertical support plate (301). 5) The whole is composed of two slip rings, one large and one small, welded together. The small slip ring is slidably engaged with the hexagonal positioning shaft (3012) by spring push, and the large slip ring is slidably engaged with the horizontal support section of the L-shaped calibration rod (303). The part of the vertical support plate (301) between the hexagonal positioning shaft (3012) and the hexagonal track shaft (3011) is slidably fitted with a rectangular slip sleeve (306). The rectangular slip sleeve (306) and the small slip ring are symmetrically mounted with a first connecting rod (307). The rectangular slip sleeve (306) and the tail end of the longitudinal support drive rod (304) are symmetrically connected with two second connecting rods (308). When the sliding drive component (305) slides away from the vertical support plate (301), the large slip ring abuts against the limiting plate (3031). Two vertical support frames (7) are symmetrically arranged on the ground at the rear adjacent position of the rectangular base (1). Two horizontal support track shafts (702) are symmetrically welded between the two vertical support frames (7). An L-shaped slide rod (4) is slidably installed on the two horizontal support track shafts (702). The first end of the L-shaped slide rod (4) is threaded tightly with a laser welding gun (6). The L-shaped calibration rod (303) is used to calibrate and align the laser welding gun (6) and the butt joint. When the L-shaped slide rod (4) slides to the left and right ends of the two horizontal support track shafts (702), it abuts against the first ends of the two longitudinal support drive rods (304).

2. The laser welding apparatus for vacuum pump housing according to claim 1, characterized in that, The rectangular base (1) has two arc-shaped support plates (101) symmetrically welded above the top of the two short side plates. The vacuum pump housing (2) is placed on the two arc-shaped support plates (101). Three rubber guide wheels (102) are rotatably mounted on the arc-shaped support plate (101) at equal intervals, and the vacuum pump housing (2) rolls against the rubber guide wheels (102); The tail end of the shaft of the rubber guide wheel (102) on the bottom side is fitted with a driven synchronous wheel (1021).

3. The laser welding apparatus for vacuum pump housing according to claim 1, characterized in that, The vertical support frame (7) is composed of a U-shaped vertical support frame (701) and a ground contact plate welded to the bottom of the U-shaped vertical support frame (701). The left and right ends of the horizontal support track shaft (702) are welded and fixed together with the longitudinal support side rods of the two U-shaped vertical support frames (701). A horizontal support screw (703) is rotatably installed between the middle parts of the longitudinal support side rods of the two U-shaped vertical support frames (701). The left side thread of the middle part of the longitudinal support side rod of the U-shaped vertical support frame (701) on the left side is fitted with a first motor (9), and the first motor (9) is axially connected to the cross support screw (703) for transmission.

4. The laser welding apparatus for vacuum pump housing according to claim 1, characterized in that, The tail end of the L-shaped slide bar (4) is welded with a longitudinal support slide plate (401). The longitudinal support slide plate (401) is in sliding cooperation with two cross support track shafts (702), and the cross support screw (703) is screwed through the middle part of the longitudinal support slide plate (401).

5. The laser welding apparatus for vacuum pump housing according to claim 1, characterized in that, The two L-shaped calibration rods (303) and the laser welding gun (6) are positioned in the vertical direction and are located on the same vertical reference plane. The horizontal support section of the L-shaped calibration rod (303) has a hexagonal structure, and the diameter of the large slip ring is greater than the width of the horizontal support section of the L-shaped calibration rod (303).

6. The laser welding apparatus for vacuum pump housing according to claim 2, characterized in that, A protruding mounting plate (103) is welded to the left short side plate of the rectangular base (1). Two vertical short support plates (104) are symmetrically welded to the top of the protruding mounting plate (103). A worm gear (105) is rotatably installed between the tops of the two vertical short support plates (104). Two vertical lugs are symmetrically welded to the middle of the top of the two short side plates of the rectangular base (1). A horizontal support shaft (8) is rotatably installed between the two vertical lugs. A worm gear (802) is fitted on the left end of the horizontal support shaft (8). The worm gear (802) meshes with the worm (105) for transmission. The right and left ends of the cross brace shaft (8) are fitted with active synchronous pulleys (801), and a synchronous belt is tensioned between the active synchronous pulley (801) and the driven synchronous pulley (1021).

7. The laser welding apparatus for a vacuum pump housing according to claim 6, characterized in that, The top of the vertical short support plate (104) on the front side is threaded with a second motor (11), and the second motor (11) is driven by the worm gear (105).

8. The laser welding apparatus for a vacuum pump housing according to claim 6, characterized in that, The top of the rectangular base (1) is threadedly fitted with a shaft cover (5) at the position of the cross brace shaft (8). The shaft cover (5) has a U-shaped cross section and is fitted onto the cross brace shaft (8).

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