Special equipment for automatic welding processing of elevator buffer oil cylinder

Abstract

The invention discloses equipment special for automatic welding machining of an elevator buffer oil cylinder, and relates to the technical field of welding. The equipment comprises a mounting plate, first connecting plates are fixedly connected to the two sides of the mounting plate, a second connecting plate is fixedly connected to the rear portion of the mounting plate, and a welding manipulator is mounted at the top of each first connecting plate; a clamping manipulator is mounted at the top of the second connecting plate, a two-way screw rod is rotationally connected to the inner wall of the mounting plate, two sliding blocks are in threaded connection with the circumferential surface of the two-way screw rod, clamping blocks are fixedly connected to the tops of the sliding blocks, and a telescopic plate is fixedly connected between the two clamping blocks; a plurality of cylinder bodies and bases can be sequentially fixed and welded at the same time, the welding number of the cylinder bodies and the bases depends on the number of the arc-shaped grooves in the placing grooves in the inner walls of the clamping blocks, then the cylinder bodies and the bases can be sequentially welded at a time, frequent discharging and feeding are not needed, and the working efficiency is improved.

Description

Technical Field

[0001] This invention belongs to the field of welding, specifically relating to a special automatic welding equipment for elevator buffer cylinders. Background Technology

[0002] The elevator buffer cylinder welding device is a special welding equipment used for the automated production of the core safety component of elevators—the buffer cylinder. It can be regarded as a "welding robot" that integrates a precision robotic arm, an intelligent control system, and a welding system. Its job is to precisely weld multiple parts such as the base plate, panel, cylinder body, and oil nozzle into a complete cylinder.

[0003] Patent CN219881724U discloses a fixing fixture for circumferential welding of hydraulic cylinder sleeves. It includes a rotating device for rotating the hydraulic cylinder sleeve and a support device for adjusting the support position. The support device supports the hydraulic cylinder sleeve to be welded and includes a support base, a front slide block, a rear slide block, a front mounting bracket, a rear mounting bracket, and an adjusting screw. The middle parts of the front and rear slide blocks are threaded to the adjusting screw. The front and rear slide blocks are respectively mounted on the front and rear slide blocks. The bottom ends of the front and rear mounting brackets are hinged to the top ends of the front and rear slide blocks, respectively. The middle parts of the front and rear mounting brackets are hinged. Two sets of support wheels can provide auxiliary support for the sleeve. For sleeves of different diameters, the support wheels can be adjusted up and down to improve the support effect on the sleeve, thereby ensuring the quality of the circumferential welding of the hydraulic cylinder sleeve and improving its practicality.

[0004] However, the above-mentioned device still has the following problems: it can only perform welding operations on a single cylinder and base. When welding multiple workpieces, it requires frequent disassembly, unloading, loading and clamping, which is very troublesome and inefficient. Summary of the Invention

[0005] The purpose of this invention is to provide a special automatic welding processing equipment for elevator buffer cylinders, so as to solve the problem that welding operations can only be performed on a single cylinder body and base. When welding multiple workpieces, frequent disassembly, unloading, loading and clamping are required, which is very troublesome and inefficient.

[0006] To achieve the above objectives, the present invention provides a special automatic welding processing equipment for elevator buffer cylinders, comprising: a mounting plate, connecting plates 1 fixedly connected to both sides of the mounting plate, connecting plate 2 fixedly connected to the rear of the mounting plate, a welding robot mounted on the top of the connecting plate 1, a clamping robot mounted on the top of the connecting plate 2, a bidirectional screw rotatably connected to the inner wall of the mounting plate, two sliders threadedly connected to the circumferential surface of the bidirectional screw, a clamping block fixedly connected to the top of the slider, a telescopic plate fixedly connected between the two clamping blocks, the telescopic plate being used to prevent welding slag from contacting the bidirectional screw, a motor provided on the side of the mounting plate, and the output end of the motor being fixedly connected to the bidirectional screw, and a placement groove provided above the side of the two clamping blocks that are close to each other, the placement groove having multiple arc-shaped grooves; This device can weld multiple cylinders and bases simultaneously and sequentially. The number of cylinders and bases to be welded depends on the number of arc-shaped grooves in the inner wall of the clamping block. Thus, multiple cylinders and bases can be welded sequentially at one time, eliminating the need for frequent unloading and loading, thereby improving work efficiency. A clamping mechanism is disposed on the top of the mounting plate; A guiding mechanism is disposed on the surface of the clamping mechanism; A positioning mechanism is disposed on the surface of the clamping mechanism; The clamping mechanism includes a fixed plate, and two rotating rods are rotatably connected to the inner wall of the fixed plate via a connecting rod. A cylinder is fixedly connected to the top of the mounting plate, and a pressure plate is fixedly connected to the telescopic end of the cylinder. A motor is installed in the fixed plate, and the motor drives the two rotating rods to rotate via a connecting rod. Multiple cylinders are clamped and placed in the placement slots on the inner wall of two clamping blocks by a clamping robot. The cylinders roll forward along the arc surface on the back side of the placement slot and are positioned in the arc groove of the placement slot. Then, the clamping robot places the corresponding number of cylinder bases between the grooves of two rotating rods. The motor then drives the rotating rod on the fixed plate to rotate, and the rotating rod drives the base to rotate and press it onto the corresponding cylinder. Then, the cylinder is activated and drives the pressure plate to move down. After the pressure plate moves down, it presses on the top of the rotating rod, thereby fixing the rotating rod and making the base on the rotating rod press tightly against the cylinder, which facilitates the subsequent welding work.

[0007] In one possible implementation, the welding robot is used to weld the connection between the cylinder body and the base, the clamping robot is used to load and unload the cylinder body and the base, the rear third of the placement groove is an arc-shaped surface, the front two-thirds of the placement groove is a flat surface, and the arc-shaped groove is opened on the flat surface of the placement groove.

[0008] In one possible implementation, the bottom of the clamping block is slidably connected to the top of the mounting plate, the surface of the slider is slidably connected to the inner wall of the mounting plate, the bottom of the telescopic plate contacts the top of the mounting plate, and the bottom of the pressure plate contacts the rotating rod.

[0009] In one possible implementation, the guiding mechanism includes two fixed frames, which are respectively fixedly connected to the two rotating rods on opposite sides. A plurality of guide plates are fixedly connected to the side of the fixed frames away from the rotating rods. As the rotating rod rotates downwards and causes the base to contact the cylinder, the rotating rod also causes the fixed frame to rotate together. The fixed frame causes the guide plate to move. The guide plate contacts multiple cylinders through the inclined surface and separates the multiple cylinders that are in contact with each other through the inclined surface, ensuring that multiple cylinders can move into the corresponding arc grooves, so that multiple bases and cylinders can be precisely connected.

[0010] In one possible implementation, a conductor is fixedly connected to the inner wall of the fixed frame, a clamping plate is mounted on the surface of the welding gun of the welding robot, and conductors are mounted on the inner walls of both sides of the clamping plate.

[0011] In one possible implementation, the first conductor is a single unit, the first conductor is wavy and follows the same welding trajectory, and the inner wall of the card plate is provided with a detector, which is electrically connected to the two conductors. During welding, the welding robot moves the welding torch to the connection point between the base and the cylinder, and moves along multiple arc-shaped trajectories to weld. The arc-shaped trajectory of conductor one is consistent with the welding torch's welding operation trajectory. When the welding robot moves the welding torch to the connection point between the base and the cylinder, the welding torch moves the clamping plate. The clamping plate causes two conductors two to simultaneously contact the surface of conductor one. An external power supply energizes one side of conductor two while de-energizing the other side. At this time, conductor two and conductor one form a circuit after contact, which energizes the other conductor two and energizes the detector in the clamping plate, causing the detector to start and work. At the same time, it sends an electrical signal to the computer. The operator can observe the continuous energization of the detector through the electrical signal received on the computer to determine whether the welding robot is performing welding operations according to the preset route. If a power failure occurs, it means that the welding route has deviated at that point, and the deviated point needs to be inspected to ensure welding quality.

[0012] In one possible implementation, the positioning mechanism includes two support plates, which are symmetrically fixed on both sides of a fixed plate, and a rotating plate is rotatably connected between the two support plates. An arc-shaped push plate is fixedly connected to the front of the rotating rod.

[0013] In one possible implementation, the inner wall of the fixed plate is slidably connected to a movable plate by a spring, and the top of the movable plate is fixedly connected to a plurality of elastic plates. As the rotating rod rotates and clamps the workpiece, it drives the arc-shaped push plate to rotate. The arc-shaped push plate pushes the rotating plate along the support plate through its arc surface. The rotating plate pushes the moving plate backward and stretches the spring. When the moving plate moves backward, it also moves the elastic plate backward. The elastic plate pushes the multiple cylinders piled up in front to roll backward. When the cylinders move into the arc groove, the elastic plate can no longer push the cylinders out of the arc groove. Therefore, the elastic plate will deform to ensure that the moving plate can continue to move. This process is only to ensure that the multiple cylinders do not all pile up in front of the placement groove when they roll down, so that the multiple cylinders are relatively evenly distributed in the placement groove, allowing the subsequent guide plate to be effectively inserted between two cylinders, ensuring the separation and positioning between the cylinders.

[0014] In one possible implementation, the side of the arc-shaped push plate away from the rotating rod contacts the rear of the rotating plate, and the front of the moving plate contacts the rear of the rotating plate. When the rotating rod is turned upwards to open, the stretched spring will drive the moving plate forward to reset, and the moving plate will push the rotating plate to rotate and reset, making it convenient for the next use. After welding is completed, the rotating rod will drive multiple welded bases and cylinders to rotate, and the clamping robot will remove them and place new workpieces.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. Through the coordinated operation of the mounting plate, connecting plate one, welding robot, connecting plate two, clamping robot, bidirectional screw, clamping block, slider, telescopic plate, clamping mechanism, fixing plate, rotating rod, cylinder, and pressure plate, multiple cylinders and bases can be fixed and welded simultaneously and sequentially. The number of cylinders and bases to be welded depends on the number of arc grooves in the inner wall of the clamping block. Thus, multiple cylinders and bases can be welded sequentially at one time without frequent unloading and loading, improving work efficiency.

[0016] 2. Multiple contacting cylinders are separated by the inclined guide plate, ensuring that the cylinders can move into the corresponding arc-shaped grooves, allowing for precise docking between the bases and cylinders. During welding, the welding robot will drive two conductors (II) to simultaneously contact the surface of conductor (I). An external power supply energizes one side of conductor (II) while de-energizing the other. When conductor (II) contacts conductor (I), a circuit is formed, energizing the other conductor (II) and powering the detector in the card plate. This activates the detector and sends an electrical signal to the computer. The operator can observe the continuous energization of the detector through the received electrical signal to determine whether the welding robot is performing welding operations according to the preset route. If a power outage occurs, it indicates that the welding route has deviated, requiring inspection of the deviated area to ensure welding quality.

[0017] 3. The elastic plate will push the multiple cylinders piled up in front to roll backward. When the cylinders move into the arc groove, the elastic plate will no longer be able to push the cylinders out of the arc groove. Therefore, the elastic plate will deform to ensure that the moving plate can continue to move. This process is only to ensure that the multiple cylinders will not all pile up in front of the placement groove when they roll down, so that the multiple cylinders are relatively evenly distributed in the placement groove, allowing the subsequent guide plate to be effectively inserted between two cylinders, ensuring the separation and positioning between the cylinders. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure provided for an embodiment of this application; Figure 2 This is a schematic diagram of the clamping block structure provided in an embodiment of this application; Figure 3 This is a half-sectional view of the clamping block structure provided in an embodiment of this application; Figure 4 This is a schematic diagram of the slider structure provided in an embodiment of this application; Figure 5 This is a half-sectional view of the fixed frame structure provided in an embodiment of this application; Figure 6 Provided for the embodiments of this application Figure 5 Enlarged view of the structure at point A in the middle; Figure 7 This is a schematic diagram of the rotating plate structure provided in an embodiment of this application; Figure 8 This is a schematic diagram of the clamping block structure provided in an embodiment of this application.

[0019] Explanation of key figure labels: 1. Mounting plate; 2. Connecting plate one; 21. Welding robot; 3. Connecting plate two; 4. Clamping robot; 5. Bidirectional screw; 6. Clamping block; 61. Slider; 62. Telescopic plate; 7. Clamping mechanism; 71. Fixed plate; 72. Rotating rod; 73. Cylinder; 74. Pressure plate; 8. Guide mechanism; 81. Fixed frame; 82. Guide plate; 83. Conductor one; 84. Clamping plate; 85. Conductor two; 9. Positioning mechanism; 91. Support plate; 92. Rotating plate; 93. Arc-shaped push plate; 94. Moving plate; 95. Elastic plate. Detailed Implementation

[0020] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0021] like Figure 1-8 As shown, one embodiment of the present invention is: a special equipment for automatic welding of elevator buffer cylinders, comprising: a mounting plate 1, connecting plates 2 fixedly connected to both sides of the mounting plate 1, connecting plate 3 fixedly connected to the rear of the mounting plate 1, a welding robot 21 mounted on the top of the connecting plate 2, a clamping robot 4 mounted on the top of the connecting plate 3, a bidirectional screw 5 rotatably connected to the inner wall of the mounting plate 1, two sliders 61 threadedly connected to the circumferential surface of the bidirectional screw 5, a clamping block 6 fixedly connected to the top of the slider 61, a telescopic plate 62 fixedly connected between the two clamping blocks 6, the telescopic plate 62 being used to prevent welding slag from contacting the bidirectional screw 5, a motor being provided on the side of the mounting plate 1, and the output end of the motor being fixedly connected to the bidirectional screw 5, and a placement groove being provided above the side of the two clamping blocks 6 that is close to each other, with multiple arc-shaped grooves in the placement groove; This device can weld multiple cylinders and bases simultaneously and sequentially. The number of cylinders and bases to be welded depends on the number of arc-shaped grooves in the inner wall of the clamping block 6. Thus, multiple cylinders and bases can be welded sequentially at one time without frequent unloading and loading, which improves work efficiency. Clamping mechanism 7 is located on the top of mounting plate 1; Guide mechanism 8 is disposed on the surface of clamping mechanism 7; Positioning mechanism 9 is disposed on the surface of clamping mechanism 7; The clamping mechanism 7 includes a fixed plate 71. The inner wall of the fixed plate 71 is rotatably connected to two rotating rods 72 via a connecting rod. A cylinder 73 is fixedly connected to the top of the mounting plate 1. A pressure plate 74 is fixedly connected to the telescopic end of the cylinder 73. A motor is installed in the fixed plate 71. The motor drives the two rotating rods 72 to rotate via a connecting rod.

[0022] Welding robot 21 is used to weld the connection between the cylinder body and the base. Clamping robot 4 is used to load and unload the cylinder body and the base. The rear third of the placement groove is an arc-shaped surface, and the front two-thirds of the placement groove is a flat surface. The arc-shaped groove is opened on the flat surface of the placement groove.

[0023] The bottom of the clamping block 6 is slidably connected to the top of the mounting plate 1, the surface of the slider 61 is slidably connected to the inner wall of the mounting plate 1, the bottom of the telescopic plate 62 is in contact with the top of the mounting plate 1, and the bottom of the pressure plate 74 is in contact with the rotating rod 72.

[0024] Working principle: Multiple cylinders are clamped and placed in the placement grooves on the inner wall of two clamping blocks 6 by a clamping robot 4. The cylinders roll forward along the arc surface on the rear side of the placement groove and are positioned in the arc groove of the placement groove. Then, the clamping robot 4 places the corresponding number of cylinder bases between the grooves of two rotating rods 72. Then, the motor drives the rotating rods 72 on the fixing plate 71 to rotate. The rotating rods 72 drive the bases to rotate and press them onto the corresponding cylinders. Then, the cylinder 73 is activated and drives the pressure plate 74 to move down. After the pressure plate 74 moves down, it presses on the top of the rotating rod 72, thereby fixing the rotating rod 72. This makes the bases on the rotating rods 72 press tightly against the cylinders, which facilitates the subsequent welding work. This device can weld multiple cylinders and bases at the same time. The number of cylinders and bases to be welded depends on the number of arc grooves in the placement grooves on the inner wall of the clamping block 6. Thus, multiple cylinders and bases can be welded at once without frequent unloading and loading, which improves work efficiency.

[0025] like Figure 1-8 As shown, based on the above embodiments, in another embodiment of the present invention, the guide mechanism 8 includes two fixed frames 81, which are respectively fixedly connected to the two rotating rods 72 on the side away from each other. Multiple guide plates 82 are fixedly connected to the side of the fixed frame 81 away from the rotating rods 72. The inclined surface of the guide plate 82 separates the multiple cylinders that are in contact with each other, ensuring that the multiple cylinders can move into the corresponding arc groove, so that the multiple bases and cylinders can be accurately docked.

[0026] The inner wall of the fixed frame 81 is fixedly connected with conductor 83, and the welding gun surface of the welding robot 21 is equipped with a clamping plate 84. Conductors 85 are installed on the inner walls of both sides of the clamping plate 84.

[0027] Conductor 83 is a single unit, and it is wavy and follows the same welding trajectory. The inner wall of the clamp 84 is equipped with a detector, which is electrically connected to two conductors 85. The operator can use the electrical signal received by the computer to observe the continuous power supply of the detector to determine whether the welding robot 21 is performing welding operations according to the preset route. If a power failure occurs, it means that the welding route has deviated at that point, and the deviated point needs to be checked to ensure the welding quality. That is, the two conductors 85 are respectively connected to the two input terminals of the detector. When the two conductors 85 simultaneously contact conductor 83, a circuit is formed, and the detector is powered on.

[0028] The positioning mechanism 9 includes two support plates 91, which are symmetrically fixed on both sides of the fixed plate 71. A rotating plate 92 is rotatably connected between the two support plates 91, and an arc-shaped push plate 93 is fixedly connected to the front of the rotating rod 72.

[0029] The inner wall of the fixed plate 71 is slidably connected to the movable plate 94 by a spring, and the top of the movable plate 94 is fixedly connected to multiple elastic plates 95. The elastic plate 95 pushes the multiple cylinders piled up in front to roll backward. When the cylinders move into the arc groove, the elastic plate 95 will no longer be able to push the cylinders out of the arc groove. Therefore, the elastic plate 95 will deform to ensure that the moving plate 94 can continue to move. This process is only to ensure that the multiple cylinders will not all pile up in front of the placement groove when they roll down, so that the multiple cylinders are relatively evenly distributed in the placement groove, so that the subsequent guide plate 82 can be effectively inserted between two cylinders to ensure the separation and positioning between the cylinders.

[0030] The side of the arc-shaped push plate 93 away from the rotating rod 72 contacts the rear of the rotating plate 92, and the front of the moving plate 94 contacts the rear of the rotating plate 92.

[0031] Working principle: As the rotating rod 72 rotates downwards and drives the base to contact the cylinder, the rotating rod 72 also drives the fixed frame 81 to rotate together. The fixed frame 81 drives the guide plate 82 to move. The guide plate 82 contacts multiple cylinders through the inclined surface and separates the multiple contacting cylinders through the inclined surface, ensuring that multiple cylinders can move into the corresponding arc grooves, so that multiple bases and cylinders can be precisely connected. During welding, the welding robot 21 will drive the welding torch to the connection point between the base and the cylinder, and move along multiple arc trajectories to weld. The arc trajectory of conductor 83 is consistent with the movement trajectory of the welding torch during welding. When the welding robot 21 drives the welding torch to the connection point between the base and the cylinder, the welding torch... This will move the pallet 84, causing the two conductors 85 to simultaneously contact the surface of conductor 83. An external power supply energizes one conductor 85 while de-energizing the other. This creates a circuit between conductor 85 and conductor 83, energizing the other conductor 85 and powering the detector in the pallet 84. The detector then starts and operates, sending an electrical signal to the computer. The operator can observe the continuous energization of the detector using the received signal to determine if the welding robot 21 is following the preset path. If a power outage occurs, it indicates a deviation in the welding path, requiring inspection to ensure welding quality. As the rotating rod 72 rotates and clamps the workpiece, it drives the arc-shaped push plate 93 to rotate. The arc-shaped push plate 93 pushes the rotating plate 92 to rotate along the support plate 91 through its arc-shaped surface. The rotating plate 92 pushes the moving plate 94 to move backward and stretches the spring. When the moving plate 94 moves backward, it also drives the elastic plate 95 to move backward. The elastic plate 95 pushes the multiple cylinders stacked on the front plane of the placement groove to roll backward, but they will not roll to the arc surface behind the placement groove. When the cylinders move into the arc groove, the elastic plate 95 will no longer be able to push the cylinders out of the arc groove. Therefore, the elastic plate 95 will deform and thus maintain its position. The movable plate 94 can continue to move. This process is only to ensure that multiple cylinders do not all pile up in front of the placement slot when they roll down, so that multiple cylinders are relatively evenly distributed in the placement slot, allowing the subsequent guide plate 82 to be effectively inserted between two cylinders, ensuring the separation and positioning between the cylinders. When the rotating rod 72 rotates upward to open, the stretched spring will drive the movable plate 94 to move forward and reset. The movable plate 94 will push the rotating plate 92 to rotate and reset, making it convenient for the next use. After welding is completed, the rotating rod 72 drives multiple welded bases and cylinders to rotate, and the clamping robot 4 removes them and places new workpieces.

[0032] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0033] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A special automatic welding and processing equipment for elevator buffer cylinders, characterized in that, include: Mounting plate (1), with connecting plate one (2) fixedly connected to both sides of mounting plate (1), and connecting plate two (3) fixedly connected to the rear of mounting plate (1). Welding robot (21) is installed on the top of connecting plate one (2), and clamping robot (4) is installed on the top of connecting plate two (3). Bidirectional screw (5) is rotatably connected to the inner wall of mounting plate (1). Two sliders (61) are threadedly connected to the circumferential surface of the bidirectional screw (5). Clamping block (6) is fixedly connected to the top of the slider (61). Telescopic plate (62) is fixedly connected between the two clamping blocks (6). The telescopic plate (62) is used to prevent welding slag from contacting the bidirectional screw (5). A motor is provided on the side of mounting plate (1), and the output end of the motor is fixedly connected to the bidirectional screw (5). A placement groove is opened above the side of the two clamping blocks (6) that are close to each other. Multiple arc-shaped grooves are opened in the placement groove. A clamping mechanism (7) is provided on the top of the mounting plate (1); A guiding mechanism (8) is disposed on the surface of the clamping mechanism (7); Positioning mechanism (9), which is disposed on the surface of clamping mechanism (7); The clamping mechanism (7) includes a fixed plate (71), and the inner wall of the fixed plate (71) is rotatably connected to two rotating rods (72) via a connecting rod. A cylinder (73) is fixedly connected to the top of the mounting plate (1), and a pressure plate (74) is fixedly connected to the telescopic end of the cylinder (73). A motor is provided in the fixed plate (71), and the motor drives the two rotating rods (72) to rotate via a connecting rod.

2. The special automatic welding equipment for elevator buffer cylinders according to claim 1, characterized in that, The welding robot (21) is used to weld the connection between the cylinder and the base. The clamping robot (4) is used to load and unload the cylinder and the base. The rear third of the placement groove is an arc-shaped surface, and the front two-thirds of the placement groove is a flat surface. The arc-shaped groove is opened on the flat surface of the placement groove.

3. The special automatic welding equipment for elevator buffer cylinders according to claim 2, characterized in that, The bottom of the clamping block (6) is slidably connected to the top of the mounting plate (1), the surface of the slider (61) is slidably connected to the inner wall of the mounting plate (1), the bottom of the telescopic plate (62) is in contact with the top of the mounting plate (1), and the bottom of the pressure plate (74) is in contact with the rotating rod (72).

4. The special automatic welding equipment for elevator buffer cylinders according to claim 3, characterized in that, The guiding mechanism (8) includes two fixed frames (81), which are respectively fixedly connected to the two rotating rods (72) on opposite sides. Multiple guide plates (82) are fixedly connected to the side of the fixed frame (81) away from the rotating rods (72).

5. The special automatic welding equipment for elevator buffer cylinders according to claim 4, characterized in that, The inner wall of the fixed frame (81) is fixedly connected with conductor one (83), the welding gun surface of the welding robot (21) is equipped with a card plate (84), and conductor two (85) is installed on the inner walls of both sides of the card plate (84).

6. The special automatic welding equipment for elevator buffer cylinders according to claim 5, characterized in that, The first conductor (83) is a whole, the first conductor (83) is wavy and has the same welding trajectory, the inner wall of the card plate (84) is provided with a detector, and the detector is electrically connected to the two second conductors (85).

7. The special automatic welding equipment for elevator buffer cylinders according to claim 6, characterized in that, The positioning mechanism (9) includes two support plates (91), which are symmetrically fixed on both sides of the fixed plate (71). A rotating plate (92) is rotatably connected between the two support plates (91), and an arc-shaped push plate (93) is fixedly connected to the front of the rotating rod (72).

8. The special equipment for automatic welding of elevator buffer cylinders according to claim 7, characterized in that, The inner wall of the fixed plate (71) is slidably connected to a movable plate (94) by a spring, and the top of the movable plate (94) is fixedly connected to a plurality of elastic plates (95).

9. The special automatic welding equipment for elevator buffer cylinders according to claim 8, characterized in that, The side of the arc-shaped push plate (93) away from the rotating rod (72) contacts the rear of the rotating plate (92), and the front of the moving plate (94) contacts the rear of the rotating plate (92).

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