A cylinder rod head welding and pressing device

Abstract

The utility model discloses a kind of oil cylinder rod head welding pressure devices, belong to oil cylinder manufacturing technical field, including welding station and the rotary disc being set in the top of welding station, the driving part for driving rotary disc rotation is installed in the top of welding station, rotary disc side is equipped with three-jaw chuck for clamping fixed oil cylinder rod, welding station top installs mounting seat, through the rotary disc driven by servo motor of welding station top left side and three-jaw chuck cooperation, it can be realized to oil cylinder rod main body stable clamping and accurate positioning, while right side pressure plate bottom slide block along welding station top guide rail sliding, can drive concave rotary plate and the oil cylinder rod head clamped by clamping plate along linear direction close to oil cylinder rod, ensure the axis accurate alignment of rod head and rod body welding position;In addition the cooperation of bearing and rotating shaft in rotating part, it can be rotated synchronously with the rod body driven by servo motor in the welding process, further avoid coaxiality deviation caused by relative displacement, effectively solve the problem of big fluctuation of traditional manual positioning precision.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder manufacturing technology, and in particular to a hydraulic cylinder rod head welding and clamping device. Background Technology

[0002] A hydraulic cylinder, also known as a hydraulic oil cylinder, is a core actuator that efficiently converts hydraulic energy into mechanical energy. With its advantages of high output force, smooth movement, high reliability, and excellent control precision, it has deeply penetrated many key sectors of the national economy. The core components of a hydraulic cylinder include the cylinder barrel, piston, piston rod, seals, and end caps. The piston rod, as the direct carrier of the cylinder's output power, plays a decisive role in the overall service life and operational stability of the cylinder due to its performance and structural integrity. The cylinder rod head, as a key component connecting the piston rod to the external load, typically needs to be welded and fixed to the piston rod body to form an integrated structure. The connection accuracy of the rod head directly affects the coaxiality of the piston rod and the external equipment, while the welding strength relates to whether the cylinder will experience safety hazards such as rod head detachment or breakage under high-pressure conditions. Therefore, the welding quality of the cylinder rod head and piston rod is a core quality control aspect in the hydraulic cylinder manufacturing process.

[0003] In the current technology, the commonly used welding assistance methods in the industry are mostly manual hand-held clamp positioning or simple tooling clamping and fixing. The former relies on the operator's experience, the positioning accuracy fluctuates greatly, and it cannot provide a continuous and stable clamping force; although the latter can achieve preliminary fixing, it generally has the problem of poor adaptability. For hydraulic cylinder rod heads of different diameters and lengths, it is necessary to frequently change clamping parts, the adjustment process is cumbersome, resulting in low production efficiency. Utility Model Content

[0004] The main purpose of this utility model is to provide a hydraulic cylinder rod head welding and clamping device, which can effectively solve the problems in the background art.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A hydraulic cylinder rod head welding and clamping device includes a welding table and a rotating disk disposed on top of the welding table;

[0007] The welding table is equipped with a drive unit on top for driving the rotary table to rotate, and a three-jaw chuck is provided on one side of the rotary table for clamping and fixing the cylinder rod.

[0008] A mounting base is installed on the top of the welding table, and a pressure plate is provided on one side of the mounting base. A pushing component for adjusting the horizontal movement of the pressure plate is installed on the mounting base.

[0009] A concave rotating plate is provided on one side of the clamping plate, and the concave rotating plate is rotatably connected to the clamping plate through a rotating component on one side;

[0010] The concave rotating plate has two clamping plates on one side for clamping and fixing the cylinder rod head. The clamping plates are slidably connected to the concave rotating plate through a limiting guide block on one side adjustment plate. The concave rotating plate is equipped with an adjustment component for adjusting the distance between the two clamping plates.

[0011] Preferably, the driving component includes a servo motor mounted on the side wall of the mounting base, and the rotary disk is mounted on the output end of the servo motor.

[0012] Preferably, the mounting base is installed on the top right side of the welding table, and the clamping drive includes a cylinder installed on the side wall of the mounting base. The output end of the cylinder is installed with a clamping plate that pushes the cylinder rod head to move. A slider that slides with the top guide rail of the welding table is installed at the bottom of the clamping plate.

[0013] Preferably, the rotating component includes a mounting hole on the side wall of the pressure plate and a rotating shaft mounted on the side wall of the concave rotating plate. A bearing for rotating the rotating shaft is installed in the mounting hole, and the rotating shaft and the inner ring of the bearing are inserted and fixed together.

[0014] Preferably, the adjusting component includes a bidirectional adjusting screw and an adjusting knob. Rotating rods are installed at both ends of the bidirectional adjusting screw. Rotating holes for rotating the rotating rods are opened at the top and bottom of the concave rotating plate. An adjusting knob for rotating the bidirectional adjusting screw is installed at the outer end of one end of the rotating rod.

[0015] Preferably, the adjusting plate is installed on one side of the clamping plate and is threadedly connected to the bidirectional adjusting screw through a screw hole opened at the top, and the limiting guide block is slidably installed in a set of limiting guide grooves opened on the side wall of the concave rotating plate.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] The rotary disk driven by the servo motor on the top left of the welding table works in conjunction with the three-jaw chuck to achieve stable clamping and precise positioning of the hydraulic cylinder rod body. At the same time, the slider at the bottom of the right clamping plate slides along the guide rail on the top of the welding table, which can drive the hydraulic cylinder rod head held by the concave rotating plate and clamping plate to move closer to the hydraulic cylinder rod in a straight line, ensuring that the axis of the rod head and the welding part of the rod body are precisely aligned. In addition, the bearing and the rotating shaft in the rotating parts can rotate synchronously with the rod body driven by the servo motor during the welding process, further avoiding coaxiality deviation caused by relative displacement, and effectively solving the problem of large fluctuations in the accuracy of traditional manual positioning.

[0018] The adjusting component inside the concave rotating plate adopts a bidirectional adjusting screw design. With the screw hole and limit guide block on the adjusting plate, the operator only needs to turn the adjusting knob to drive the bidirectional adjusting screw to rotate, causing the two clamping plates to move in opposite directions along the limit guide groove, thus adapting to the clamping requirements of cylinder rod heads of different diameters. Unlike traditional simple tooling, there is no need to frequently change clamping parts, which not only reduces the change time, but also meets the welding processing requirements of cylinder rod heads of multiple specifications, improving versatility and applicability.

[0019] The drive unit uses a cylinder as its power source, which can quickly push the clamping plate to bring the rod head close to the hydraulic cylinder rod and provide a stable and continuous clamping force, replacing the laborious operation of traditional manual hand clamps and reducing the labor intensity of operators. On the one hand, the cylinder-driven clamping plate can provide a stable and continuous clamping force for the welding part between the rod head and the rod body; on the other hand, the servo motor can drive the rod body and the rod head to rotate synchronously and uniformly, which makes it convenient for workers to quickly perform welding. Attached Figure Description

[0020] Figure 1 This is a front view schematic diagram of the overall structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the structure of the cylinder rod clamping part of this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of the hydraulic cylinder rod head clamping and pressing part of this utility model;

[0023] Figure 4 This is a schematic diagram of the structure of the clamping plate of this utility model;

[0024] Figure 5 This is a schematic diagram of the structure of the clamping plate of this utility model.

[0025] In the diagram: 1. Welding table; 2. Servo motor; 3. Rotary disk; 4. Three-jaw chuck; 5. Mounting base; 6. Guide rail; 7. Cylinder; 8. Pressure plate; 9. Slider; 10. Mounting hole; 11. Bearing; 12. Concave rotating plate; 13. Rotating shaft; 14. Rotating hole; 15. Limiting guide groove; 16. Bidirectional adjusting screw; 17. Rotating rod; 18. Adjusting knob; 19. Clamping plate; 20. Adjusting plate; 21. Screw hole; 22. Limiting guide block. Detailed Implementation

[0026] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0027] like Figure 1 - Figure 5As shown, a hydraulic cylinder rod head welding and clamping device includes a welding table 1 and a rotating disk 3 disposed on the top of the welding table 1;

[0028] The top of the welding table 1 is equipped with a drive unit for driving the rotary disk 3 to rotate, and a three-jaw chuck 4 for clamping and fixing the cylinder rod is provided on one side of the rotary disk 3.

[0029] A mounting base 5 is installed on the top of the welding table 1. A pressure plate 8 is provided on one side of the mounting base 5. A pusher for adjusting the horizontal movement of the pressure plate 8 is installed on the mounting base 5.

[0030] A concave rotating plate 12 is provided on one side of the clamping plate 8, and the concave rotating plate 12 is rotatably connected to the clamping plate 8 through a rotating component on one side;

[0031] Two clamping plates 19 are provided on one side of the concave rotating plate 12 for clamping and fixing the cylinder rod head. The clamping plates 19 are slidably connected to the concave rotating plate 12 through the limiting guide block 22 on the adjusting plate 20 on one side. An adjusting component for adjusting the distance between the two clamping plates 19 is installed on the concave rotating plate 12.

[0032] like Figure 2 As shown, the driving component includes a servo motor 2 mounted on the side wall of the mounting base 5, and a rotary disk 3 mounted on the output end of the servo motor 2. During operation, the servo motor 2 transmits torque to the rotary disk 3 through the output shaft, driving the rotary disk 3 to achieve precise rotational speed and angle control, and further driving the three-jaw chuck 4 to rotate, so that the three-jaw chuck 4 drives the clamped and fixed hydraulic cylinder rod to rotate synchronously.

[0033] like Figure 3 As shown, the mounting base 5 is installed on the top right side of the welding table 1. The clamping drive includes a cylinder 7 installed on the side wall of the mounting base 5. The output end of the cylinder 7 is installed with a clamping plate 8 that pushes the cylinder rod head to move. A slider 9 is installed at the bottom of the clamping plate 8 and slides along the guide rail 6 at the top of the welding table 1. When the cylinder 7 extends or retracts, the output end pushes the clamping plate 8, causing the slider 9 to slide along the guide rail 6 in a directional direction, thereby driving the clamping plate 8 and subsequent components to move horizontally. The linear driving force provided by the cylinder 7 can precisely control the moving distance of the clamping plate 8, ensuring that the welding end face of the cylinder rod head and the cylinder rod is tightly fitted. The cooperation between the guide rail 6 and the slider 9 restricts the movement trajectory of the clamping plate 8, ensuring the straightness of the translation process, avoiding deviation when the rod head and the rod body are connected, and improving the positioning accuracy. At the same time, the cylinder 7 can provide a continuous and stable clamping force to offset welding stress and reduce deformation.

[0034] like Figure 4 and Figure 5As shown, the rotating component includes a mounting hole 10 on the side wall of the clamping plate 8 and a rotating shaft 13 mounted on the side wall of the concave rotating plate 12. A bearing 11 for rotating the rotating shaft 13 is installed in the mounting hole 10. The rotating shaft 13 and the inner ring of the bearing 11 are inserted and fixed. When the rotating disk 3 drives the cylinder rod to rotate, the cylinder rod head transmits torque to the concave rotating plate 12 through the clamping plate 19, so that the rotating shaft 13 can rotate freely in the inner ring of the bearing 11, thereby realizing the synchronous rotation of the concave rotating plate 12 and the cylinder rod, and ensuring the uniformity of the welded circumferential surface.

[0035] like Figure 5 As shown, the adjusting component includes a bidirectional adjusting screw 16 and an adjusting knob 18. Rotating rods 17 are installed at both ends of the bidirectional adjusting screw 16. Rotating holes 14 for rotating the rotating rods 17 are opened at the top and bottom of the concave rotating plate 12. An adjusting knob 18 for rotating the bidirectional adjusting screw 16 is installed at the outer end of one of the rotating rods 17. When the adjusting knob 18 is rotated, the rotating rods 17 and the bidirectional adjusting screw 16 are rotated in the rotating hole 14. Since the threads at both ends of the bidirectional adjusting screw 16 are opposite, by cooperating with the screw holes 21 of the adjusting plate 20, the two adjusting plates 20 and the connected clamping plates 19 are driven to move in opposite directions or in opposite directions. The distance between the two clamping plates 19 can be quickly adjusted to meet the clamping requirements of cylinder rod heads of different diameters without the need to change the clamps, thus improving the versatility of the equipment. Moreover, the thread drive of the bidirectional adjusting screw 16 has self-locking properties, which can keep the position of the clamping plates 19 stable after adjustment and prevent the rod head from loosening during the welding process.

[0036] like Figure 4 and Figure 5 As shown, the adjusting plate 20 is installed on one side of the clamping plate 19 and is threadedly connected to the bidirectional adjusting screw 16 through the screw hole 21 opened at the top. The limiting guide block 22 is slidably installed in a set of limiting guide grooves 15 opened on the side wall of the concave rotating plate 12. When the bidirectional adjusting screw 16 rotates, the limiting guide block 22 slides along the limiting guide grooves 15 to limit the movement direction of the adjusting plate 20. The cooperation between the limiting guide block 22 and the limiting guide grooves 15 ensures that the adjusting plate 20 and the clamping plate 19 only move in the horizontal direction, avoiding the torsional force generated by the rotation of the bidirectional adjusting screw 16 from causing the clamping plate 19 to shift. This ensures that the clamping surfaces of the two clamping plates 19 always remain parallel, improves the clamping stability and centering of the cylinder rod head, and further ensures the welding accuracy.

[0037] The specific operating principle of this hydraulic cylinder rod head welding and clamping device is as follows:

[0038] First, the cylinder rod is fixed and positioned: The operator places one end of the cylinder rod to be welded in the three-jaw chuck 4 on the left side of the welding table 1, and clamps and fixes the cylinder rod by adjusting the jaws of the three-jaw chuck 4 to ensure that the cylinder rod axis coincides with the central axis of the three-jaw chuck 4. At this time, the first drive component servo motor 2 installed on the side wall of the mounting base 5 is in standby mode, and the rotary disk 3 connected to its output end remains relatively stationary with the three-jaw chuck 4, laying the initial positioning foundation for subsequent rotary welding.

[0039] Next, the clamping and adaptation adjustment of the cylinder rod head is completed: the cylinder rod head to be welded is placed between two clamping plates 19 on one side of the concave rotating plate 12. The operator rotates the adjustment knob 18 on the outside of the concave rotating plate 12, which drives the rotating rod 17 connected to the adjustment knob 18 to rotate in the rotating holes 14 at the top and bottom of the concave rotating plate 12, thereby driving the bidirectional adjustment screw 16 to rotate synchronously. Since the threads at both ends of the bidirectional adjustment screw 16 are opposite and are threadedly connected to the adjustment plate 20 through the screw hole 21, its rotation will drive the two adjustment plates 20 to move in opposite directions along the limiting guide groove 15 on the side wall of the concave rotating plate 12. The limiting guide block 22 slides with the adjustment plate 20 in the limiting guide groove 15 to ensure the stability of the movement direction. Finally, the clamping plate 19 connected to the adjustment plate 20 clamps the cylinder rod head, realizing the adaptation and fixing of rod heads of different diameters.

[0040] Then, the cylinder rod and rod head are clamped together: the second driving cylinder 7 installed on the side wall of the mounting base 5 is activated. The output end of the cylinder 7 pushes the clamping plate 8, so that the slider 9 at the bottom of the clamping plate 8 slides along the guide rail 6 at the top of the welding table 1. This causes the clamping plate 8, the concave rotating plate 12 connected by the rotating component, and the clamped cylinder rod head to move to the left cylinder rod direction until the welding end face of the cylinder rod head is tightly fitted with the welding end face of the cylinder rod. At this time, the cylinder 7 maintains the output pressure and provides a continuous and stable clamping force to the mating part through the clamping plate 8, so as to avoid the incomplete welding or welding deformation caused by the gap during the welding process.

[0041] Finally, synchronous rotational welding is achieved: After the welding of the cylinder rod and cylinder rod head is completed, ensuring a secure connection, the servo motor 2 is started. Its output drives the rotating disk 3 and the three-jaw chuck 4 to rotate the cylinder rod at a uniform speed. At the same time, the cylinder rod head transmits torque to the concave rotating plate 12 through the clamping plate 19, allowing the rotating shaft 13 on the side wall of the concave rotating plate 12 to rotate smoothly in the bearing 11 within the mounting hole 10 of the clamping plate 8. This achieves synchronous rotation of the concave rotating plate 12 and the cylinder rod. The operator can then hold the welding equipment and align it with the rotating joint to perform welding operations. Uniform rotation ensures that the weld pool is uniformly formed, completing the welding process of the cylinder rod head.

[0042] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, various improvements can be made to it without departing from the scope of the present utility model, and components can be replaced with equivalents or some technical features can be replaced with equivalents. All such improvements within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A hydraulic cylinder rod head welding and clamping device, comprising a welding table (1) and a rotating disk (3) disposed on the top of the welding table (1); Its features are: The welding table (1) is equipped with a drive unit for driving the rotating disk (3) to rotate, and a three-jaw chuck (4) for clamping and fixing the oil cylinder rod is provided on one side of the rotating disk (3). The welding table (1) is equipped with a mounting base (5) on its top. A pressure plate (8) is provided on one side of the mounting base (5). A pusher for adjusting the horizontal movement of the pressure plate (8) is installed on the mounting base (5). The clamping plate (8) has a concave rotating plate (12) on one side, and the concave rotating plate (12) is rotatably connected to the clamping plate (8) through a rotating component on one side; The concave rotating plate (12) has two clamping plates (19) on one side for clamping and fixing the cylinder rod head. The clamping plates (19) are slidably connected to the concave rotating plate (12) through the limiting guide block (22) on the adjusting plate (20) on one side. The concave rotating plate (12) is equipped with an adjusting member for adjusting the distance between the two clamping plates (19).

2. The hydraulic cylinder rod head welding and clamping device according to claim 1, characterized in that: The driving component includes a servo motor (2) mounted on the side wall of the mounting base (5), and the rotating disk (3) is mounted on the output end of the servo motor (2).

3. The hydraulic cylinder rod head welding and clamping device according to claim 2, characterized in that: The mounting base (5) is installed on the top right side of the welding table (1). The pusher includes a cylinder (7) installed on the side wall of the mounting base (5). The output end of the cylinder (7) is installed with a pressure plate (8) that pushes the cylinder rod head to move. The bottom of the pressure plate (8) is equipped with a slider (9) that slides with the top guide rail (6) of the welding table (1).

4. The hydraulic cylinder rod head welding and clamping device according to claim 3, characterized in that: The rotating component includes a mounting hole (10) on the side wall of the pressure plate (8) and a rotating shaft (13) mounted on the side wall of the concave rotating plate (12). A bearing (11) for rotating the rotating shaft (13) is installed in the mounting hole (10), and the inner ring of the rotating shaft (13) is inserted and fixed to the bearing (11).

5. The hydraulic cylinder rod head welding and clamping device according to claim 4, characterized in that: The adjusting component includes a bidirectional adjusting screw (16) and an adjusting knob (18). Rotating rods (17) are installed at both ends of the bidirectional adjusting screw (16). Rotating holes (14) for rotating the rotating rods (17) are provided at the top and bottom of the concave rotating plate (12). An adjusting knob (18) for rotating the bidirectional adjusting screw (16) is installed at the outer end of one end of the rotating rod (17).

6. The hydraulic cylinder rod head welding and clamping device according to claim 5, characterized in that: The adjusting plate (20) is installed on one side of the clamping plate (19) and is threadedly connected to the bidirectional adjusting screw (16) through the screw hole (21) opened at the top. The limiting guide block (22) is slidably installed in a set of limiting guide grooves (15) opened on the side wall of the concave rotating plate (12).

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