Hydraulic cylinder body welding tool

Abstract

The invention discloses a hydraulic cylinder body welding tool and relates to the technical field of welding tools, the hydraulic cylinder body welding tool comprises a bottom plate, a sealing cylinder and a first sliding rail are fixedly connected to the bottom plate, and a first sliding frame is slidably connected into the first sliding rail; a clamping mechanism is arranged on the first sliding frame and used for keeping cylinder bodies of various sizes at the position coaxial with the sealing barrel to be clamped and conveying the clamped cylinder bodies into the sealing barrel. The protection mechanism comprises sealing assemblies arranged on the left and right positions of the cylinder body, and the sealing assemblies are used for sealing the space between the outer diameter of the cylinder body and the inner diameter of the sealing barrel. An air exhaust assembly is arranged on the cylinder body, and the air exhaust assembly is used for exhausting air in the sealing space of the sealing assembly after the sealing assembly completes sealing; by means of the mode that external air pressure acts on the inner wall of the cylinder body to exert pressure on the inner wall of the cylinder body, the problem that the cylinder body deforms due to too high temperature during welding can be effectively avoided.

Description

Technical Field

[0001] The invention relates to the technical field of welding tooling, in particular to a hydraulic cylinder body welding tooling. Background Art

[0002] A hydraulic cylinder is a hydraulic actuator that converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion).

[0003] In some small equipment, some small hydraulic cylinders are used. During production, some fixings such as flanges need to be welded to the cylinder body to facilitate the installation of the hydraulic cylinder; since the thickness of the cylinder body of this type of hydraulic cylinder is relatively thin, the high temperature generated by welding is likely to cause the cylinder body to deform during welding; the patent with application number 202122989105.2 discloses a hydraulic cylinder flange welding tooling, including a base, a conical rod, an annular plate and a pressure plate. Specifically, a conical rod is provided along the vertical direction on the top surface of the base for installing a hydraulic cylinder, with the top of the conical rod at the top and the bottom of the cone at the bottom. The conical rod can be connected to hydraulic cylinders of different inner diameters. This patent achieves the effect of preventing deformation of the cylinder body by inserting the conical rod into the inner wall of the hydraulic cylinder and applying a predetermined pressure to the hydraulic cylinder from top to bottom, so that the conical rod is in close contact with the inner wall of the hydraulic cylinder. However, in actual use, since the conical rod fits tightly against the cylinder body, the cylinder body will fit more tightly against the conical rod when affected by temperature, which will make it difficult to separate the conical rod from the cylinder body later. In addition, during use, since the size of the conical rod is not variable, it can only be applied to a cylinder body of one size. Summary of the invention

[0004] The purpose of the present invention is to provide a hydraulic cylinder body welding tool to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solution: a hydraulic cylinder body welding tool, comprising a bottom plate, a sealing cylinder and a slide rail 1 are fixedly connected to the bottom plate, and a slide frame 1 is slidably connected inside the slide rail 1;

[0006] The first sliding frame is provided with a clamping mechanism, which is used to clamp cylinder bodies of various sizes coaxially with the sealing cylinder and transport the clamped cylinder bodies into the sealing cylinder;

[0007] A protective mechanism is provided in the sealing cylinder, and the protective mechanism is used to protect the cylinder body from deformation due to excessively high welding temperature when the flange is welded to the cylinder body;

[0008] The protection mechanism includes a sealing assembly arranged at the left and right positions of the cylinder body, and the sealing assembly is used to seal the space between the outer diameter of the cylinder body and the inner diameter of the sealing tube; the cylinder body is provided with an air extraction assembly, and the air extraction assembly is used to extract the air in the sealing space of the sealing assembly after the sealing assembly completes the sealing;

[0009] A welding mechanism is provided inside the sealing cylinder, and the welding mechanism is used to weld the flange onto the cylinder block.

[0010] Preferably, the clamping mechanism includes a first motor and a rotating frame respectively fixedly connected and rotatably connected to the first sliding frame. The output shaft of the first motor is fixedly connected to the rotating frame; the rotating frame is located directly to the right of the sealing cylinder and is circular in shape, and the outer diameter of the rotating frame is equal to the inner diameter of the sealing cylinder; a rotating rod is rotatably connected to the central part inside the rotating frame, a self-locking bidirectional lead screw is rotatably connected inside the rotating rod, and the left and right sides of the bidirectional lead screw are symmetrically threadedly connected with sliders, and the sliders are slidably connected to the rotating rod; a plurality of push plates arranged in a circumferential array relative to the rotating rod are provided at the part between the two sliders around the rotating rod, the push plates are in contact with the inner wall of the cylinder block, and both ends of the push plates are rotatably connected with connecting rods, and the other ends of the two connecting rods are respectively rotatably connected with the two sliders; a first driving assembly is provided on the bottom plate, and the first driving assembly is used to drive the bidirectional lead screw to rotate during the process of the first motor driving the rotating frame to rotate from the vertical state to the horizontal state; a second driving assembly is provided on the bottom plate, and the second driving assembly is used to drive the first sliding frame to move towards the sealing cylinder.

[0011] Preferably, the first driving assembly includes a second slide rail fixedly connected to the bottom plate. A second sliding frame is slidably connected inside the second slide rail. A first spring is fixedly connected to the front end of the second sliding frame, and the front end of the first spring is fixedly connected to the second slide rail; a connecting rod is rotatably connected to the second sliding frame, and a torsion spring is connected between the connecting rod and the second sliding frame; an arc-shaped bevel gear rack is fixedly connected to the outer end of the connecting rod; the center of the arc-shaped bevel gear rack is located on the axis of rotation of the connecting rod, and the connecting rod and the rotating frame are coaxial; a bevel gear is fixedly connected to the left end of the rotating rod, and the bevel gear meshes with the arc-shaped bevel gear rack.

[0012] Preferably, the second driving assembly includes a first cylinder located above the first slide rail. The first cylinder is fixedly connected to the base of the sealing cylinder, and the telescopic end of the first cylinder is fixedly connected with a frame body, and the frame body is clamped on the first sliding frame.

[0013] Preferably, the left part of the frame body is in contact with the first sliding frame, and there is a gap between the right part of the frame body and the frame body; a first push block is fixedly connected to the frame body, a second push block is provided in front of the first push block, the second push block is in contact with the first push block, and the second push block is fixedly connected with the connecting rod.

[0014] Preferably, the sealing assembly includes two sealing discs, and the two sealing discs are respectively rotatably connected to the sealing cylinder and the rotating frame; the sealing discs are annular in shape, and the surfaces of the two sealing discs close to each other are made of rubber material; a sealing strip is installed at the edge part of the rotating frame.

[0015] Preferably, the air extraction assembly includes an air extraction pump fixed on the sealing cylinder, and the air extraction pump is connected to the sealing cylinder.

[0016] Preferably, the welding mechanism includes a welding chamber fixed at the front of the sealing cylinder. Inside the welding chamber, two cylinders are symmetrically arranged at the left and right positions. The fixed end of the cylinder is fixedly connected to the welding chamber, and the telescopic end of the cylinder is rotatably connected with a welding device; a glass plate is fixedly connected to the front end of the welding chamber; a second motor is fixedly connected to the rotating frame, and the output shaft of the second motor is fixedly connected to the rotating rod.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. In the present invention, the cylinder body is transported into the sealing cylinder, and then the sealing component is started to seal the space between the outer diameter of the cylinder body and the inner diameter of the sealing cylinder. Then, the air extraction pump is started to extract the air in the sealed space, so that a relatively vacuum environment is achieved in the sealed space; since the cylinder body and the flange are welded in an environment close to vacuum, the oxidation reaction can be effectively inhibited during the welding process. While improving the welding quality, it can increase the penetration depth, improve the weld formation, reduce pores and spatter, and improve the weld density, which can greatly improve the welding quality of the cylinder body. At the same time, the external air pressure acts on the inner wall of the cylinder body to apply pressure to the inner wall of the cylinder body, which can effectively avoid the problem of deformation of the cylinder body due to excessive temperature during welding.

[0019] 2. In the present invention, the cylinder body is sleeved on the rotating rod, and then the motor is started to drive the rotating frame to rotate. When the rotating frame rotates, it drives the rotating rod to rotate accordingly. The bevel gear on the rotating rod drives the bidirectional lead screw to rotate under the action of the arc-shaped bevel gear rack. Therefore, the bidirectional lead screw can push multiple push plates to move outward through two sliders and multiple connecting rods. Under the action of the multiple push plates, the cylinder body will gradually be pushed to the center position of the rotating frame, so as to achieve the effect of stably clamping the cylinder body; when the push plate moves to the position where it fits the inner wall of the cylinder body, the bevel gear stops rotating. Since the gear can stop rotating at any position on the arc-shaped rack, the push plate can be used to clamp cylinder bodies of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 is a schematic diagram of the rear view structure of the present invention;

[0022] Figure 3 is a schematic diagram of the disassembled structure of the present invention;

[0023] Figure 4 is a schematic diagram of the structure of the clamping mechanism in the present invention;

[0024] Figure 5Schematic diagram of the split structure of the clamping mechanism in the present invention;

[0025] Figure 6 Schematic diagram of the structure of the rotating rod in the present invention;

[0026] Figure 7 Schematic diagram of the structure of the arc-shaped bevel gear rack in the present invention;

[0027] Figure 8 Schematic diagram of the principle of the clamping mechanism in the present invention;

[0028] Figure 9 Schematic diagram of the structure of the protection mechanism in the present invention;

[0029] Figure 10 Schematic diagram of the split structure of the protection mechanism in the present invention;

[0030] Figure 11 Schematic diagram of the principle of the protection mechanism in the present invention.

[0031] Reference numerals: 1, base plate; 2, sealing cylinder; 3, first slide rail; 4, first sliding frame; 5, cylinder block; 6, flange; 7, first motor; 8, rotating frame; 9, rotating rod; 10, bidirectional lead screw; 11, slider; 12, push plate; 13, connecting rod; 14, second slide rail; 15, second sliding frame; 16, first spring; 17, connecting rod; 18, torsion spring; 19, arc-shaped bevel gear rack 19; 20, bevel gear; 21, first cylinder; 22, frame body; 23, first push block; 24, second push block; 25, sealing disc; 26, air extraction pump; 27, welding chamber; 28, second cylinder; 29, welding equipment; 30, glass plate; 31, second motor. Detailed implementation manners

[0032] Please refer to Figures 1-11 , the present invention provides a technical solution: A hydraulic cylinder block welding tooling, including a base plate 1, on which a sealing cylinder 2 and a first slide rail 3 are fixedly connected, and a first sliding frame 4 is slidably connected in the first slide rail 3;

[0033] A clamping mechanism is provided on the first sliding frame 4, and the clamping mechanism is used to hold cylinder blocks 5 of various sizes in a position coaxial with the sealing cylinder 2 and clamp them, and transport the clamped cylinder blocks 5 into the sealing cylinder 2;

[0034] A protection mechanism is provided in the sealing cylinder 2, and the protection mechanism is used to protect the cylinder block 5 from deformation due to excessive welding temperature when welding the flange 6 to the cylinder block 5;

[0035] The protection mechanism includes sealing components arranged on the left and right sides of the cylinder block 5, and the sealing components are used to seal the space between the outer diameter of the cylinder block 5 and the inner diameter of the sealing cylinder 2; an air extraction component is provided on the cylinder block 5, and the air extraction component is used to extract the air in the sealed space of the sealing component after the sealing component completes sealing;

[0036] A welding mechanism is arranged inside the sealing cylinder 2, and the welding mechanism is used to weld the flange 6 to the cylinder block 5;

[0037] During operation, when the flange 6 needs to be welded to the cylinder block 5, first place the cylinder block 5 on the clamping mechanism, and then start the clamping mechanism to clamp the cylinder block 5 and drive the cylinder block 5 to rotate to the horizontal state; when the clamping mechanism rotates 90 degrees, at this time the cylinder block 5 is in the horizontal state and the cylinder block 5 and the sealing cylinder 2 are on the same axis, and then the flange 6 to be welded can be sleeved on the cylinder block 5 and the flange 6 can be adjusted to the corresponding position; the clamping mechanism can clamp cylinder blocks 5 of different sizes, thereby improving the applicable range of the equipment;

[0038] When the cylinder block 5 is clamped by the clamping mechanism and is in the position coaxial with the sealing cylinder 2, at this time the clamping mechanism transports the cylinder block 5 into the sealing cylinder 2, and the space between the outer diameter of the cylinder block 5 and the inner diameter of the sealing cylinder 2 can be sealed by the sealing component. At this time, start the air extraction component, and through the air extraction component, the air in the sealed space between the outer diameter of the cylinder block 5 and the inner diameter of the sealing cylinder 2 can be extracted, so that the sealed space reaches an environment close to vacuum. Then the welding mechanism can be started to weld the cylinder block 5 and the flange 6; since the cylinder block 5 and the flange 6 are welded in an environment close to vacuum, the oxidation reaction can be effectively inhibited during the welding process, improving the welding quality while increasing the penetration depth, improving the weld formation, reducing pores and spatter, improving the weld density, greatly improving the welding quality of the cylinder block 5. At the same time, the external air pressure acts on the inner wall of the cylinder block 5 to apply pressure to the inner wall of the cylinder block 5, which can effectively avoid the problem of deformation of the cylinder block 5 due to excessive temperature during welding.

[0039] Refer to Figures 4-8, as a further solution of the present invention, the clamping mechanism includes a first motor 7 and a rotating frame 8 respectively fixedly connected and rotatably connected to the first sliding frame 4. The output shaft of the first motor 7 is fixedly connected to the rotating frame 8; the rotating frame 8 is located directly to the right of the sealing cylinder 2 and the rotating frame 8 is circular in shape, and the outer diameter of the rotating frame 8 is equal to the inner diameter of the sealing cylinder 2; a rotating rod 9 is rotatably connected to the central part inside the rotating frame 8, and a self-locking bidirectional lead screw 10 is rotatably connected inside the rotating rod 9. Symmetrically threaded connections are provided on the left and right sides of the bidirectional lead screw 10 with sliders 11, and the sliders 11 are slidably connected to the rotating rod 9; several push plates 12 are arranged around the rotating rod 9 between the two sliders 11 and are circumferentially arranged around the rotating rod 9. The push plates 12 are in contact with the inner wall of the cylinder block 5, and both ends of the push plates 12 are rotatably connected with connecting rods 13, and the other ends of the two connecting rods 13 are respectively rotatably connected with the two sliders 11; a first driving component is provided on the bottom plate 1, and the first driving component is used to drive the bidirectional lead screw 10 to rotate during the process of the first motor 7 driving the rotating frame 8 to rotate from the vertical state to the horizontal state; a second driving component is provided on the bottom plate 1, and the second driving component is used to drive the first sliding frame 4 to move towards the direction close to the sealing cylinder 2;

[0040] The first driving component includes a second slide rail 14 fixedly connected to the bottom plate 1. A second sliding frame 15 is slidably connected inside the second slide rail 14. A first spring 16 is fixedly connected to the front end of the second sliding frame 15, and the front end of the first spring 16 is fixedly connected to the second slide rail 14; a connecting rod 17 is rotatably connected to the second sliding frame 15, and a torsion spring 18 is connected between the connecting rod 17 and the second sliding frame 15. An arc-shaped bevel gear rack 19 is fixedly connected to the outer end of the connecting rod 17; the center of the arc-shaped bevel gear rack 19 is located on the axis of rotation of the connecting rod 17, and the connecting rod 17 and the rotating frame 8 are coaxial; a bevel gear 20 is fixedly connected to the left end of the rotating rod 9, and the bevel gear 20 meshes with the arc-shaped bevel gear rack 19;

[0041] During operation, the initial state of the rotating frame 8 and the rotating rod 9 is vertical, facilitating the sleeving of the cylinder block 5 onto the rotating rod 9. When the cylinder block 5 is sleeved onto the rotating rod 9, the first motor 7 is started at this time to drive the rotating frame 8 to start rotating counterclockwise. The rotating frame 8 drives the rotating rod 9 and the cylinder block 5 to rotate counterclockwise. During the rotation of the rotating frame 8, the bevel gear 20 on the rotating rod 9 will engage with the arc-shaped bevel gear rack 19. Under the action of the arc-shaped bevel gear rack 19, the bevel gear 20 drives the bidirectional lead screw 10 to rotate. When the bidirectional lead screw 10 rotates, it will drive the two sliders 11 to move towards each other. When the two sliders 11 move, through a plurality of connecting rods 13, a plurality of push plates 12 will be driven to move towards the outer side at the same time. The push plates 12 will gradually move towards the position close to the inner wall of the cylinder block 5. Under the action of the multiple push plates 12, the cylinder block 5 will gradually be pushed to the central position of the rotating frame 8. When the cylinder block 5 is at the central position of the rotating frame 8, at this time, all the push plates 12 are in contact with the inner wall of the cylinder block 5, and the cylinder block 5 is stably clamped. Since the push plates 12 cannot move further at this time, the bidirectional lead screw 10 and the bevel gear 20 cannot rotate further. As the first motor 7 drives the rotating frame 8 to continue rotating, the bevel gear 20 will drive the connecting frame to rotate following the rotating frame 8 by overcoming the torsion of the torsion spring 18 through the arc-shaped bevel gear rack 19 (the positions where the bevel gear 20 of the cylinder block 5 with different diameters stops rotating on the arc-shaped bevel gear rack 19 are all different). When the rotating frame 8 rotates 90 degrees, the first motor 7 is stopped at this time, and the cylinder block 5 is coaxial with the sealing cylinder 2 at this time.

[0042] Refer to Figure 3 、 Figures 5-8 As a further solution of the present invention, the second driving assembly includes a first cylinder 21 located above the first slide rail 3. The first cylinder 21 is fixedly connected to the base of the sealing cylinder 2, and the telescopic end of the first cylinder 21 is fixedly connected with a frame 22. The frame 22 is clamped on the first sliding frame 4.

[0043] The left part of the frame 22 is in contact with the first sliding frame 4, and there is a gap between the right part of the frame 22 and the frame 22 itself. A first pushing block 23 is fixedly connected to the frame 22. A second pushing block 24 is provided in front of the first pushing block 23. The second pushing block 24 is in contact with the first pushing block 23 and the second pushing block 24 is fixedly connected with the connecting rod 17.

[0044] During operation, when the cylinder block 5 is in the position coaxial with the sealing cylinder 2, the first cylinder 21 is started at this time to drive the frame 22 to move leftward. When the frame 22 moves leftward, its left part will first disengage from the first sliding frame 4, and the right part moves towards the direction close to the first sliding frame 4. When the right part of the frame 22 is in contact with the first sliding frame 4, it will pull the first sliding frame 4 to move leftward. During the movement of the frame 22, the frame 22 will first drive the first pushing block 23 to push the second pushing block 24 to move forward. The second pushing block 24 will drive the connecting rod 17 and the arc-shaped bevel gear rack 19 to move forward. When the arc-shaped bevel gear rack 19 moves forward, it will disengage from the bevel gear 20, and then automatically reset under the action of the torsion spring 18.

[0045] As the first cylinder 21 continues to operate, the frame 22 drives the first sliding carriage 4 to move leftward, and the cylinder block 5 moves into the sealing cylinder 2;

[0046] When the cylinder block 5 completes welding and resets, the bevel gear 20 drives the connecting rod 17 to rotate upward against the torsion of the torsion spring 18 through the arc bevel rack 19. When the rotating frame 8 rotates upward by ninety degrees, the first cylinder 21 is driven again to drive the first push block 23 to move, and the first push block 23 pushes the second push rod 24 again to reset the arc bevel rack 19 and the connecting rod 17.

[0047] Refer to Figure 5 、 Figures 9-11 As a further solution of the present invention, the sealing assembly includes two sealing disks 25, and the two sealing disks 25 are respectively rotatably connected to the sealing cylinder 2 and the rotating frame 8; the sealing disks 25 are in a ring shape and the surfaces of the two sealing disks 25 close to each other are made of rubber material; a sealing strip is installed at the edge of the rotating frame 8;

[0048] During operation, when the first cylinder 21 drives the rotating frame 8 and the cylinder block 5 to move into the sealing cylinder 2, at this time, the left and right ends of the cylinder block 5 are respectively in contact with the left and right sealing disks 25. Since the part of the sealing disk 25 in contact with the cylinder block 5 is made of rubber material and has strong sealing performance, a part of the space between the outer diameter of the cylinder block 5 and the inner diameter of the sealing cylinder 2 on the left is sealed. Under the action of the sealing strip of the rotating frame 8, the space between the outer diameter of the cylinder block 5 and the inner diameter of the sealing cylinder 2 on the right is sealed by the rotating frame 8 and the right sealing disk 25. At this time, the space between the outer diameter of the cylinder block 5 and the inner diameter of the sealing cylinder 2 is in a sealed state.

[0049] Refer to Figure 10 As a further solution of the present invention, the air extraction assembly includes an air extraction pump 26 fixed on the sealing cylinder 2, and the air extraction pump 26 is connected to the sealing cylinder 2;

[0050] During operation, by starting the air extraction pump 26, the air in the space between the outer diameter of the cylinder block 5 and the inner diameter of the sealing cylinder 2 can be pumped away, so that the part where the cylinder block 5 is welded to the flange 6 is in a relatively vacuum environment.

[0051] Refer to Figure 10 As a further solution of the present invention, the welding mechanism includes a welding chamber 27 fixed at the front of the sealing cylinder 2. The left and right positions in the welding chamber 27 are symmetrically provided with second cylinders 28. The fixed ends of the second cylinders 28 are fixedly connected to the welding chamber 27 and the telescopic ends of the second cylinders 28 are rotatably connected with welding equipment 29; a glass plate 30 is fixedly connected to the front end of the welding chamber 27; a second motor 31 is fixedly connected to the rotating frame 8, and the output shaft of the second motor 31 is fixedly connected to the rotating rod 9;

[0052] During operation, when welding the cylinder block 5 and the flange 6, the inside of the welding chamber 27 can be observed through the glass plate 30. First, drive the welding device 29 to rotate relative to the second cylinder 28. When the welding device 29 rotates, its welding point will get closer to the cylinder block 5. Stop rotating the welding device 29 when the welding point of the welding device 29 touches the surface of the cylinder block 5.

[0053] By starting the second cylinders 28 on both the left and right sides, the two welding devices 29 can be driven to move left and right. Stop the second cylinders 28 when the left welding device 29 is adjusted to the left welding position of the flange 6 and the right welding device 29 is adjusted to the right welding position of the flange 6. At this time, start the two welding devices 29 to simultaneously weld the connecting part of the flange 6 and the cylinder block 5. While welding, start the second motor 31. The second motor 31 drives the rotating rod 9 to rotate, and the rotating rod 9 drives the cylinder block 5 and the two sealing disks 25 to rotate. The welding can be completed after the cylinder block 5 rotates one circle.

Claims

1. A welding tooling for a hydraulic cylinder block, comprising a bottom plate, characterized in that: A sealing cylinder and a first slide rail are fixedly connected to the bottom plate, and a first sliding frame is slidably connected in the first slide rail; A clamping mechanism is provided on the first sliding frame. The clamping mechanism is used to hold cylinders of various sizes in a position coaxial with the sealing cylinder and clamp them, and then transport the clamped cylinders into the sealing cylinder; A protection mechanism is provided inside the sealing cylinder. The protection mechanism is used to protect the cylinder from deformation due to excessive welding temperature when welding a flange to the cylinder; The protection mechanism includes sealing components provided on the left and right positions of the cylinder. The sealing components are used to seal the space between the outer diameter of the cylinder and the inner diameter of the sealing cylinder; An air extraction component is provided on the cylinder. The air extraction component is used to extract the air in the space sealed by the sealing components after the sealing components complete the sealing; A welding mechanism is provided inside the sealing cylinder. The welding mechanism is used to weld a flange to the cylinder.

2. The welding tooling for a hydraulic cylinder block according to claim 1, characterized in that: The clamping mechanism includes a first motor and a rotating frame fixedly connected and rotatably connected to the first sliding frame respectively. The output shaft of the first motor is fixedly connected to the rotating frame; The rotating frame is located directly to the right of the sealing cylinder and is circular in shape. The outer diameter of the rotating frame is equal to the inner diameter of the sealing cylinder; A rotating rod is rotatably connected to the center of the rotating frame, and a self-locking bidirectional lead screw is rotatably connected inside the rotating rod. Symmetrically threaded connections are provided on the left and right sides of the bidirectional lead screw with sliders. The sliders are slidably connected to the rotating rod; A plurality of push plates are arranged in a circumferential array around the rotating rod between the two sliders. The push plates are in contact with the inner wall of the cylinder, and both ends of the push plates are rotatably connected with connecting rods. The other ends of the two connecting rods are respectively rotatably connected to the two sliders; A first driving component is provided on the bottom plate. The first driving component is used to drive the bidirectional lead screw to rotate during the process of the first motor driving the rotating frame to rotate from a vertical state to a horizontal state; A second driving component is provided on the bottom plate. The second driving component is used to drive the first sliding frame to move towards the sealing cylinder.

3. The welding tooling for a hydraulic cylinder block according to claim 2, characterized in that: The first driving component includes a second slide rail fixedly connected to the bottom plate. A second sliding frame is slidably connected in the second slide rail. A first spring is fixedly connected to the front end of the second sliding frame, and the front end of the first spring is fixedly connected to the second slide rail; A connecting rod is rotatably connected to the second sliding frame, and a torsion spring is connected between the connecting rod and the second sliding frame; An arc-shaped bevel gear rack is fixedly connected to the outer end of the connecting rod. The center of the arc-shaped bevel gear rack is located on the axis of rotation of the connecting rod, and the connecting rod and the rotating frame are coaxial; A bevel gear is fixedly connected to the left end of the rotating rod, and the bevel gear meshes with the arc-shaped bevel gear rack.

4. The welding tooling for a hydraulic cylinder block according to claim 3, characterized in that: The second driving component includes a first cylinder located above the first slide rail. The first cylinder is fixedly connected to the base of the sealing cylinder, and the telescopic end of the first cylinder is fixedly connected to a frame body, and the frame body is clamped on the first sliding frame.

5. The welding tooling for a hydraulic cylinder block according to claim 4, wherein: The left part of the frame body is in contact with the first sliding frame, and there is a gap between the right part of the frame body and the frame body; A first push block is fixedly connected to the frame body. A second push block is provided in front of the first push block. The second push block is in contact with the first push block, and the second push block is fixedly connected to the connecting rod.

6. The welding tooling for a hydraulic cylinder block according to claim 2, characterized in that: The sealing assembly includes two sealing discs, and the two sealing discs are respectively rotatably connected to the sealing cylinder and the rotating frame; the sealing discs are in an annular shape and the surfaces of the two sealing discs close to each other are made of rubber; a sealing strip is installed at the edge of the rotating frame.

7. The welding tooling for a hydraulic cylinder block according to claim 1, wherein: The air extraction assembly includes an air extraction pump fixed on the sealing cylinder, and the air extraction pump is connected to the sealing cylinder.

8. The welding tooling for a hydraulic cylinder block according to claim 2, wherein: The welding mechanism includes a welding chamber fixed at the front of the sealing cylinder. In the welding chamber, two cylinders No. 2 are symmetrically arranged at the left and right positions. The fixed ends of the cylinders No. 2 are fixedly connected to the welding chamber, and the telescopic ends of the cylinders No. 2 are rotatably connected to welding equipment; a glass plate is fixedly connected to the front end of the welding chamber; a motor No. 2 is fixedly connected to the rotating frame, and the output shaft of the motor No. 2 is fixedly connected to the rotating rod.

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