Double-station welding device for hydraulic oil cylinder jack connector

Abstract

The invention discloses a hydraulic oil cylinder jack connector double-station welding device, and relates to the technical field of jack connector welding, the hydraulic oil cylinder jack connector double-station welding device comprises a welding mechanical arm, welding stations are arranged on the two sides of the welding mechanical arm, and the two welding stations are used for conducting welding and clamping preparation synchronously; the positioning mechanism is arranged on the welding station and is used for clamping and positioning the jack joint; the placing frame is fixed on the welding station, and the whole placing frame is V-shaped; the device has the beneficial effects that the V-shaped placing frame is arranged, after the cylinder barrel is placed on the placing frame, the cylinder barrel can be preliminarily positioned, the sliding arc plate and the pressing rod which are in driving connection are arranged at the top of the placing frame, and when the cylinder barrel makes contact with the pressing rod and presses the pressing rod downwards through the gravity of the cylinder barrel, the cylinder barrel can be conveniently positioned; and the pressing rod can drive the sliding arc plate to slide to fix the cylinder barrel, through the arrangement, the device can automatically fix the cylinder barrel, and the situation of weld joint dislocation or insufficient welding caused by deviation of the cylinder body can be prevented.

Description

Technical Field

[0001] This invention relates to the field of jack joint welding technology, and particularly to a dual-station welding device for hydraulic cylinder jack joints. Background Technology

[0002] As a key actuator in hydraulic equipment such as jacks, the manufacturing quality of hydraulic cylinders directly affects the performance and reliability of the entire machine. During the assembly process of hydraulic cylinders, it is usually necessary to weld inlet and outlet oil connectors at the end of the cylinder body to connect the hydraulic pipeline. This welding process has high precision requirements. If the relative position between the connector and the cylinder body is offset, it will not only affect the sealing performance, but may also lead to leakage, pressure loss or even failure of the hydraulic system.

[0003] Currently, in the welding process of hydraulic cylinder jack joints, the cylinder body is generally placed at the welding station manually or semi-automatically, and then the operator starts the welding equipment to complete the welding operation. However, this existing technology has the following obvious drawbacks: 1. Unreliable fixation: During the welding process, due to the influence of thermal stress or mechanical vibration, the cylinder body that is not sufficiently constrained may undergo slight displacement, which may lead to misalignment or incomplete welding of the weld. 2. Insufficient automation: Existing equipment relies heavily on manual intervention, which is not only inefficient but also requires highly skilled operators, making it difficult to meet the needs of large-scale, high-cycle production. 3. Lack of dual-station collaborative design: Traditional welding equipment is usually a single-station structure, which cannot realize the continuous operation mode of "welding at one station and clamping at another station", thus restricting the overall production efficiency.

[0004] Therefore, it is necessary to invent a dual-station welding device for hydraulic cylinder jack joints to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a dual-station welding device for hydraulic cylinder jack joints to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a dual-station welding device for hydraulic cylinder jack joints, comprising a welding robotic arm with welding stations on both sides, the two welding stations being used for simultaneous welding and clamping preparation; a positioning mechanism located on the welding stations, used for clamping and positioning the jack joints; and a placement frame fixed on the welding stations, the frame being V-shaped overall, with sliding arc plates symmetrically sliding on two inclined surfaces at its top, and a pressure rod sliding at the middle position of its top, the pressure rod being drivenly connected to the sliding arc plates, the pressure rod being used to drive the sliding arc plates to fix the cylinder.

[0007] Preferably, it also includes a support, which has two and is located on both sides of the welding robot arm, with a tray fixed on its top, and multiple placement racks are provided and fixed on the top of the tray.

[0008] Preferably, it also includes an extension plate, which is fixed to one end of the bracket near the welding robot arm, and a lifting threaded rod is threaded through it. The top end of the lifting threaded rod is rotatably mounted on the bottom of the base plate; a drive cylinder one, which is fixed to the top of the base plate, and a joint positioning plate is fixed to its telescopic end. The top of the joint positioning plate is provided with a drive cylinder two and a clamp connected to it.

[0009] Preferably, it also includes a limiting tube, which is fixed to the top of the bracket near the welding robot arm. An adjusting plate is fixed to the top of the tube, and the top of the tube has multiple equally spaced screw holes. The adjusting plate has multiple through holes with matching screw holes, and a screw rod is inserted through the through holes. The bottom end of the screw rod is threaded into the screw hole, and the diameter of the head of the screw rod is larger than the width of the through hole. The limiting plate is fixed to the end of the adjusting plate near the bracket, and a reinforcing rib is provided between its side and the top of the adjusting plate.

[0010] Preferably, it also includes an arc-shaped cavity, which has two symmetrically arranged on two inclined surfaces at the top of the placement frame. Two sliding arc plates are respectively sealed and slid within the two arc-shaped cavities. A tension spring is provided between the bottom end of the sliding arc plate and the bottom end of the arc-shaped cavity. A hinge plate is hinged to the top of the sliding arc plate. An inner groove matching the hinge plate is provided on the top inclined surface of the placement frame.

[0011] Preferably, it also includes an intermediate cavity, which is located at the middle of the top of the placement frame. Its bottom is connected to the bottom of the arc-shaped cavity through a vent hole. A matching plate is welded to the top of the cavity, and the top slope of the matching plate matches the top slope of the placement frame. A piston plate is sealed and slidably in the intermediate cavity. Its top is fixed to the bottom of the pressure rod. A tension spring cavity is provided at the bottom of the matching plate. A tension spring is provided between the top of the tension spring cavity and the top of the piston plate. A through hole is provided in the middle of the matching plate. The pressure rod passes through the hole. Its diameter is larger than the diameter of the pressure rod. A ball bearing is provided at the top of the pressure rod.

[0012] Preferably, it also includes a vent hole, which extends through the bottom end of the side of the intermediate cavity, and a sealing screw is installed on the outer end of the vent hole.

[0013] Preferably, it also includes a recessed cavity, which is symmetrically arranged on two inclined surfaces at the top of the matching plate, and a top plate is sealed and slidably mounted inside the cavity. The top of the top plate is also provided with a ball bearing.

[0014] Preferably, it also includes an adjustment cavity located inside the placement frame, with its two ends connected to the lower end of the arc-shaped cavity and the inner end of the recessed cavity through through hole one and through hole two, respectively; and an adjustment cylinder fixed to the side of the placement frame, with its telescopic end extending into the adjustment cavity and a piston plate two fixed thereon, the piston plate two sliding in a sealed manner within the adjustment cavity.

[0015] The beneficial effects and advantages of this invention are as follows: 1. This invention uses a V-shaped placement frame to initially position the cylinder after it is placed on the frame. By setting a sliding arc plate and a pressure rod connected to the top of the placement frame, when the cylinder contacts the pressure rod and uses its own weight to press the pressure rod down, the pressure rod will drive the sliding arc plate to slide and fix the cylinder. This setting enables the device to automatically fix the cylinder and prevent the cylinder from shifting, which could lead to misalignment or poor welding of the weld.

[0016] 2. By setting up two welding stations and cooperating with a welding robotic arm, this invention can realize a continuous operation mode of "welding at one station and clamping at the other station", which can effectively improve the overall production efficiency.

[0017] 3. By setting a limiting plate at one end of the bracket near the welding robot arm, the cylinder can be limited at one end when it is placed on the placement frame. With the joint positioning plate and the placement frame, it is easier to position and install the cylinder. In addition, with the welding robot arm, the skill requirements of the operator can be reduced, which can meet the needs of large-scale, high-speed production.

[0018] 4. By setting a second piston plate, when the position of the cylinder shifts after it is fixed, the piston plate can be driven to slide by adjusting the oil cylinder. This allows the gas in the arc-shaped cavity to be drawn into the adjusting cavity, causing the hinge plate to detach from the outer surface of the cylinder. It can also push the gas on the other side of the piston plate into the recessed cavity to push the abutment plate, reducing the friction between the cylinder and the matching plate, making the cylinder easier to rotate. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of one of the welding stations of the present invention; Figure 3 This is a schematic diagram of the placement rack structure of the present invention; Figure 4 This is a schematic cross-sectional view of the placement rack of the present invention; Figure 5 This is a schematic diagram of the adjusting cylinder structure of the present invention; Figure 6 This is a top sectional view of the placement rack and matching plate of the present invention; Figure 7 This is a schematic diagram of the sliding arc plate structure of the present invention; Figure 8 This is a schematic diagram of the limiting plate structure of the present invention.

[0020] In the picture: 1. Welding robotic arm; 2. Welding station; 21. Support frame; 22. Pallet; 3. Positioning mechanism; 31. Extension plate; 32. Lifting threaded rod; 33. Base plate; 34. Drive cylinder one; 35. Joint positioning plate; 36. Drive cylinder two; 37. Clamp; 4. Placement rack; 41. Sliding arc plate; 411. Arc cavity; 412. Tension spring II; 413. Hinge plate; 414. Inner groove; 42. Pressure rod; 421. Intermediate cavity; 422. Vent hole; 423. Piston plate I; 424. Tension spring cavity; 425. Tension spring I; 426. Through hole; 43. Matching plate; 431. Inner cavity; 432. Top plate; 44. Vent hole; 441. Sealing screw; 45. Adjustment cavity; 451. Through hole I; 452. Through hole II; 453. Adjusting cylinder; 454. Piston plate II; 5. Limiting tube; 51. Adjusting plate; 52. Limiting plate; 53. Reinforcing rib. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] This invention provides, for example Figures 1 to 8 The hydraulic cylinder jack joint dual-station welding device shown includes a welding robotic arm 1, with welding stations 2 on both sides, used for simultaneous welding and clamping preparation; a positioning mechanism 3, located on the welding stations 2, used for clamping and positioning the jack joint; and a placement frame 4, fixed to the welding stations 2, which is V-shaped with symmetrical sliding arc plates 41 on two inclined surfaces at its top, and a pressure rod 42 sliding at the middle of its top. The pressure rod 42 is driven by the sliding arc plates 41. 41. The cylinder is fixed; the V-shaped placement frame 4 facilitates the placement of the cylinder and centers it. By setting the V-shaped placement frame 4, the cylinder can be initially positioned after being placed on the placement frame 4. By setting a sliding arc plate 41 and a pressure rod 42 connected to the top of the placement frame 4, when the cylinder contacts the pressure rod 42 and uses its own weight to press the pressure rod 42 down, the pressure rod 42 will drive the sliding arc plate 41 to slide and fix the cylinder. This setting enables the device to automatically fix the cylinder and can prevent the cylinder from shifting, which could lead to misalignment of the weld or poor welding.

[0023] Specifically, it also includes a support 21, which has two and is located on both sides of the welding robot arm 1. A tray 22 is fixed on the top of the support 21, and multiple placement racks 4 are fixed on the top of the tray 22. By setting up two welding stations 2, in conjunction with the welding robot arm 1, a continuous operation mode of "one station welding, the other station clamping" can be realized, which can effectively improve the overall production efficiency.

[0024] Specifically, it also includes an extension plate 31, which is fixed to one end of the bracket 21 near the welding robot arm 1, and a lifting threaded rod 32 is threaded through it. The top end of the lifting threaded rod 32 is rotatably mounted on the bottom of the base plate 33. A drive cylinder 34 is fixed to the top of the base plate 33, and a connector positioning plate 35 is fixed to its telescopic end. A drive cylinder 36 and a clamp 37 are connected to the top of the connector positioning plate 35. Before welding begins, the jack connector is fixed to the position to be welded on the outer surface of the cylinder by the drive cylinder 36 and the clamp 37. The fixing method is that the drive cylinder 36 pushes the clamp 37 to press the jack connector against the outer surface of the cylinder.

[0025] Specifically, it also includes a limiting tube 5, which is fixed to the top of the bracket 21 near the welding robot arm 1. An adjusting plate 51 is fixed to the top of the tube, and the top of the adjusting plate 51 has multiple equally spaced screw holes. Multiple through holes with matching screw holes are provided through the adjusting plate 51, and a screw rod is installed through the through hole. The bottom end of the screw rod is threaded into the screw hole, and the diameter of the head of the screw rod is larger than the width of the through hole. A limiting plate 52 is fixed to the adjusting plate 51 near the bracket 21, and a reinforcing rib 53 is provided between its side and the top of the adjusting plate 51. By setting the limiting plate 52 at the end of the bracket 21 near the welding robot arm 1, when the cylinder is placed on the placement frame 4, one end of the cylinder can be limited. With the joint positioning plate 35 and the placement frame 4, it is easier to position and install the cylinder. With the welding robot arm 1, the skill requirements of the operator can be reduced, which can meet the needs of large-scale, high-cycle production.

[0026] Specifically, it also includes an arc-shaped cavity 411, which has two symmetrically arranged on two inclined surfaces at the top of the placement frame 4. Two sliding arc plates 41 are respectively sealed and slid within the two arc-shaped cavities 411. A tension spring 412 is provided between the bottom end of the sliding arc plate 41 and the bottom end of the arc-shaped cavity 411. A hinge plate 413 is hinged to the top of the sliding arc plate 41. An inner groove 414 matching the hinge plate 413 is provided on the top inclined surface of the placement frame 4. The hinge plate 413 is made of rubber, which can increase the friction with the outer surface of the cylinder.

[0027] Specifically, it also includes an intermediate cavity 421, which is located at the middle of the top of the placement frame 4. Its bottom is connected to the bottom of the arc-shaped cavity 411 through a vent hole 422. A matching plate 43 is welded to the top of the cavity, and the top slope of the matching plate 43 matches the top slope of the placement frame 4. A piston plate 423 is sealed and slides within the intermediate cavity 421. Its top is fixed to the bottom of the pressure rod 42. A tension spring cavity 424 is provided at the bottom of the matching plate 43. A tension spring 425 is provided between the top of the tension spring cavity 424 and the top of the piston plate 423. A through hole 426 is provided in the middle of the matching plate 43. The pressure rod 42 passes through it, and its diameter is larger than that of the pressure rod 42. A ball bearing is provided at the top of the pressure rod 42. By adjusting the diameter of the through hole 426... The diameter is larger than that of the pressure rod 42. When the piston plate 423 slides up, the gas at the top of the intermediate cavity 421 will be discharged through the through hole 426. In the initial state, the sliding arc plate 41 is completely retracted into the arc cavity 411 under the tension of the tension spring 412. The piston plate 423 is located at the top of the intermediate cavity 421 under the tension of the tension spring 425. The top of the pressure rod 42 extends above the matching plate 43. When the cylinder needs to be placed on the placement frame 4, when the cylinder contacts the top of the pressure rod 42 and the cylinder continues to descend, the pressure rod 42 and the piston plate 423 are pressed down. The gas at the bottom of the intermediate cavity 421 is pressed into the arc cavity 411 through the vent hole 422, which lifts the sliding arc plate 41 until the hinge plate 413 abuts against the outer surface of the cylinder to fix the cylinder.

[0028] Specifically, it also includes a vent hole 44, which is located at the bottom end of the side of the intermediate cavity 421, and a sealing screw 441 is installed on the outer end of the sealing thread. By setting the vent hole 44, when the cylinder needs to be removed after welding, the sealing screw 441 is removed, so that the arc cavity 411 is connected to the outside. The sliding arc plate 41 retracts back into the arc cavity 411 under the tension of the second tension spring 412, and then the cylinder can be removed. The piston plate 423 and the pressure rod 42 slide upward and reset under the tension of the first tension spring 425.

[0029] Specifically, it also includes a recessed cavity 431, which is symmetrically arranged on two inclined surfaces at the top of the matching plate 43. Inside the cavity, a sliding abutment plate 432 is sealed, and the top of the abutment plate 432 is also provided with balls.

[0030] Specifically, it also includes an adjustment cavity 45, which is located inside the placement frame 4. Its two ends are connected to the lower end of the arc-shaped cavity 411 and the inner end of the recessed cavity 431 via through holes 451 and 452, respectively. An adjustment cylinder 453 is fixed to the side of the placement frame 4, with its telescopic end extending into the adjustment cavity 45 and fixed with a piston plate 454. The piston plate 454 slides within the adjustment cavity 45 in a sealed manner. By setting the piston plate 454, when the position of the cylinder shifts after fixing, the adjustment cylinder 453 drives the piston plate 454. 4. Sliding can draw the gas in the arc-shaped cavity 411 into the regulating cavity 45, causing the hinge plate 413 to detach from the outer surface of the cylinder. It can also push the gas on the other side of the piston plate 454 into the recessed cavity 431 to push the abutment plate 432, reducing the friction between the cylinder and the matching plate 43, making the cylinder easier to rotate. When producing the placement frame 4, the arc-shaped cavity 411, the intermediate cavity 421, the vent hole 422, the regulating cavity 45 and the through hole 451 are first opened from the side of the placement frame 4. Then, a side plate of the matching placement frame 4 is used for welding and sealing.

[0031] Working principle: Initially, the sliding arc plate 41 is completely retracted into the arc cavity 411 under the tension of the second tension spring 412, and the piston plate 423 is located at the top of the intermediate cavity 421 under the tension of the first tension spring 425. The top of the pressure rod 42 extends above the matching plate 43. When the cylinder needs to be placed on the placement bracket 4, when the cylinder contacts the top of the pressure rod 42 and the cylinder continues to descend, the pressure rod 42 and the piston plate 423 are pressed down, and the gas at the bottom of the intermediate cavity 421 is forced into the arc cavity 411 through the vent hole 422, lifting the sliding arc plate 41 until the hinge plate 413 abuts against the outer surface of the cylinder to fix it. When the fixed position of the cylinder shifts, the piston plate 454 is driven to slide by the adjusting cylinder 453, which can move the arc cavity 411. The gas inside is drawn into the regulating chamber 45, causing the hinge plate 413 to detach from the outer surface of the cylinder. It can also push the gas on the other side of the piston plate 454 into the recessed cavity 431 to push the abutment plate 432, reducing the friction between the cylinder and the matching plate 43, making the cylinder easier to rotate. After the adjustment is completed, the regulating cylinder 453 drives the piston plate 454 to reset, which in turn drives the sliding arc plate 41 to continue to fix the cylinder and drives the abutment plate 432 to reset. When the cylinder needs to be removed, the sealing screw 441 is removed, so that the arc cavity 411 is connected to the outside. The sliding arc plate 41 retracts back into the arc cavity 411 under the tension of the tension spring 412. Then the cylinder can be removed. The piston plate 423 and the pressure rod 42 slide back to reset under the tension of the tension spring 425.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dual-station welding device for hydraulic cylinder jack joints, characterized in that, include: The welding robotic arm (1) has welding stations (2) on both sides. The two welding stations (2) are used for simultaneous welding and clamping preparation. Positioning mechanism (3), which is located on welding station (2), is used to clamp and position the jack joint; The placement frame (4) is fixed on the welding station (2). It is V-shaped, with sliding arc plates (41) symmetrically sliding on the two inclined surfaces at the top. A pressure rod (42) slides in the middle of the top. The pressure rod (42) is connected to the sliding arc plate (41) and is used to drive the sliding arc plate (41) to fix the cylinder.

2. The dual-station welding device for hydraulic cylinder jack joints according to claim 1, characterized in that, Also includes: The bracket (21) has two parts, which are located on both sides of the welding robot arm (1) and the top of the bracket is fixed with a tray (22). The placement rack (4) has multiple parts, all of which are fixed to the top of the tray (22).

3. The dual-station welding device for hydraulic cylinder jack joints according to claim 2, characterized in that, Also includes: An extension plate (31) is fixed to one end of the bracket (21) near the welding robot arm (1), and a lifting threaded rod (32) is threaded through it. The top end of the lifting threaded rod (32) is rotatably mounted on the bottom of the base plate (33). Drive cylinder one (34) is fixed to the top of the base plate (33), and its telescopic end is fixed with a connector positioning plate (35). The top of the connector positioning plate (35) is provided with drive cylinder two (36) and clamp (37) connected to each other.

4. The dual-station welding device for hydraulic cylinder jack joints according to claim 2, characterized in that, Also includes: The limiting tube (5) is fixed to the top of the bracket (21) near the welding robot arm (1). An adjusting plate (51) is fixed to the top of the tube. The top of the tube has multiple equally spaced screw holes. The adjusting plate (51) has multiple through holes with matching screw holes. A screw rod is inserted through the through hole. The bottom end of the screw rod is threaded into the screw hole, and the head diameter of the screw rod is greater than the width of the through hole. A limiting plate (52) is fixed to one end of the adjusting plate (51) near the bracket (21), and a reinforcing rib (53) is provided between its side and the top of the adjusting plate (51).

5. The dual-station welding device for hydraulic cylinder jack joints according to claim 1, characterized in that, Also includes: The arc-shaped cavity (411) has two symmetrically arranged on the two inclined surfaces at the top of the placement frame (4). The two sliding arc plates (41) are respectively sealed and slid in the two arc-shaped cavities (411). A tension spring (412) is provided between the bottom end of the sliding arc plate (41) and the bottom end of the arc-shaped cavity (411). A hinge plate (413) is hinged to the top of a sliding arc plate (41), and a recessed groove (414) matching the hinge plate (413) is provided on the top inclined surface of the placement frame (4).

6. The dual-station welding device for hydraulic cylinder jack joints according to claim 5, characterized in that, Also includes: The intermediate cavity (421) is located at the middle position of the top of the placement rack (4). Its bottom is connected to the bottom of the arc-shaped cavity (411) through a vent hole (422). A matching plate (43) is welded to the top inside the cavity. The top slope of the matching plate (43) matches the top slope of the placement rack (4). Piston plate 1 (423) is sealed and slids in the intermediate cavity (421). Its top is fixed to the bottom of the pressure rod (42). The bottom of the matching plate (43) is provided with a tension spring cavity (424). A tension spring 1 (425) is provided between the top of the tension spring cavity (424) and the top of the piston plate 1 (423). A through hole (426) is provided in the middle of the matching plate (43), through which a pressure rod (42) is provided. Its diameter is larger than that of the pressure rod (42), and the top of the pressure rod (42) is provided with a ball.

7. The dual-station welding device for hydraulic cylinder jack joints according to claim 6, characterized in that, Also includes: A vent hole (44) is located at the bottom end of the side of the intermediate cavity (421), and a sealing screw (441) is installed on its outer end with a sealing thread.

8. The dual-station welding device for hydraulic cylinder jack joints according to claim 6, characterized in that, Also includes: The recessed cavity (431) is symmetrically located on two inclined surfaces at the top of the matching plate (43), and a sliding abutment plate (432) is sealed inside it. The top of the abutment plate (432) is also provided with a ball bearing.

9. The dual-station welding device for hydraulic cylinder jack joints according to claim 8, characterized in that, Also includes: The adjustment cavity (45) is located inside the placement frame (4), and its two ends are connected to the lower end of the arc-shaped cavity (411) and the inner end of the recessed cavity (431) through through hole one (451) and through hole two (452), respectively. The adjusting cylinder (453) is fixed to the side of the placement frame (4), and its telescopic end extends into the adjusting cavity (45) and is fixed with piston plate two (454). Piston plate two (454) slides in the adjusting cavity (45).

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