Special welding machine for welding oil return pipe and cylinder barrel

Abstract

The utility model provides a special welding machine for welding an oil return pipe and a cylinder barrel, in particular to a welding machine which utilizes an eccentric gear and a servo motor to control the motion trail of a welding gun so as to solve the problem of an interference area in the welding process of the oil return pipe and the cylinder barrel. The welding machine comprises a support, a welding gun and a rotating assembly, and comprehensive welding of the joint between an oil return pipe and a cylinder barrel is achieved by accurately controlling movement of the welding gun.

Description

Technical Field

[0001] The utility model relates to the technical field of welding, in particular to a special welding machine for welding a return oil pipe and a cylinder barrel. Background Technique

[0002] In common oil cylinders, the return oil pipe is one of its important components. During the welding process of the return oil pipe and the cylinder barrel, due to the interference area formed between the bent section of the return oil pipe and the cylinder barrel, at present, the connection of the return oil pipe welded to the cylinder barrel of the oil cylinder is fixed by manual welding, and the interference area brings great difficulties to the welding operation. The traditional welding method has the following defects: (1). Arc welding has high requirements for the operation skills of personnel, it is difficult to effectively weld the interference area, and long-term engagement affects the physical health of employees. (2). After welding, it is necessary to remove the welding slag residue on the weld surface. (3). The appearance quality of the weld of arc welding is poor, resulting in low welding quality, and even welding defects may occur.

[0003] The patent with the application number CN202111536512.6 discloses a welding machine and a welding method. The welding machine includes: a welding head, a floating connection part, a driving part, a first pressure feedback unit and a control system; the welding head is connected to the driving part through the floating connection part; the first pressure feedback unit is arranged on the floating connection part for detecting the welding pressure output by the floating connection part; the control system is connected to both the floating connection part and the first pressure feedback unit.

[0004] However, the above method cannot solve the technical problem of welding the return oil pipe and the cylinder barrel at one time, nor can it give a technical solution to solve the technical problems existing in the prior art. Therefore, it is of great significance to develop a special welding machine and a welding method that can solve this problem. Content of the Utility Model

[0005] The purpose of the utility model is to provide a special welding machine for welding a return oil pipe and a cylinder barrel to solve the problems raised in the above background technique:

[0006] (1) How to make it possible to complete the welding operation between the return oil pipe and the cylinder barrel in one operation by mechanical control regardless of the interference area through the improvement of the structure of the welding machine.

[0007] To achieve the above purpose, the utility model provides the following technical solutions:

[0008] A special welding machine for welding a return oil pipe and a cylinder barrel includes a bracket and a welding torch, and a welding wire is installed in the welding torch;

[0009] The welding torch is connected to the bracket through a rotating assembly. The rotating assembly includes a base plate, a first motor, a rotating disk, an eccentric gear, a second motor, a swinging gear, and a swinging disk. The base plate is hinged to the bracket. The first motor is fixedly installed on the base plate. The rotating disk is fixedly installed on the output shaft of the first motor. The eccentric gear is fixedly connected to the lower side of the rotating disk. The center line of the eccentric gear is not collinear with the center line of the rotating disk. The swinging disk is hinged to the lower side of the eccentric gear. The rotation axis of the swinging disk is collinear with the rotation axis of the eccentric gear. The second motor is fixedly installed on the swinging disk. The swinging gear is fixedly installed on the output shaft of the second motor. The swinging gear meshes with the eccentric gear. The welding torch is fixedly installed on the lower side of the swinging disk.

[0010] Based on the above technical solution, the present utility model can be further improved as follows.

[0011] Further, it further includes a feeding cylinder. The cylinder body of the feeding cylinder is fixedly connected to the swinging disk. The welding torch is fixedly connected to the piston rod of the feeding cylinder.

[0012] Further, it further includes a horizontal adjustment assembly. The horizontal adjustment assembly includes an adjustment housing, a slide rod, a slider, and an adjustment screw rod. The adjustment housing is fixedly connected to the end of the piston rod of the feeding cylinder. The slide rod is fixed in the adjustment housing. The slider is also arranged in the adjustment housing. The slider is matched with the slide rod. The adjustment screw rod is in threaded cooperation with the adjustment housing. And the end of the adjustment screw rod penetrates through the adjustment housing and is matched with the slider.

[0013] Further, it further includes a vertical adjustment assembly. The vertical adjustment assembly includes a longitudinal adjustment rod and a buckle. The upper end of the longitudinal adjustment rod is fixedly connected to the slider of the horizontal adjustment assembly. The buckle can move up and down along the longitudinal adjustment rod. The buckle is fixedly connected to the welding torch.

[0014] Further, it further includes a placement base. The lower end of the bracket is fixedly connected to the placement base. The placement base is provided with a welding station for placing the cylinder barrel.

[0015] Further, the placement base is provided with an auxiliary positioning assembly. The auxiliary positioning assembly includes a turntable cylinder and an auxiliary bracket. The turntable cylinder is beside the welding station. One end of the auxiliary bracket is fixedly connected to the piston stock of the turntable cylinder. The other end of the auxiliary bracket can be matched with the oil return pipe.

[0016] The beneficial technical effects of this special welding machine for welding the oil return pipe and the cylinder barrel are as follows:

[0017] (1). Improve welding quality and efficiency: Through the precise control of the eccentric gear and the servo motor, the welding torch can accurately align and cover the connection between the oil return pipe and the cylinder barrel, ensuring the consistency and stability of the welding quality. The movement trajectory of the welding torch can completely cover the interference area, solving the problem that it is difficult to effectively weld the interference area by traditional welding methods and improving the welding efficiency.

[0018] (2) Reduce production costs: Automated welding reduces the need for manual operations and lowers labor costs. Precise welding reduces welding defects and scrap rates, further reducing production costs.

[0019] (3) Enhance production safety: Automated welding reduces direct contact between workers and the high-temperature welding area, lowering the risk of work-related injuries. The precise control system can ensure the stability of the welding torch during operation, reducing the likelihood of equipment failures and damages.

[0020] (4) Improve equipment adaptability: By adjusting the parameters of the eccentric gear and servo motor, this welding machine can meet the welding requirements of return oil pipes and cylinder barrels with different sizes and shapes, featuring good versatility and flexibility. Description of the Drawings

[0021] Figure 1 is a three-dimensional view of the welded return oil pipe and cylinder barrel in the prior art.

[0022] Figure 2 is a working state diagram of the embodiment of the special welding machine for welding the return oil pipe and cylinder barrel of this invention.

[0023] Figure 3 is a three-dimensional view of the embodiment of the special welding machine for welding the return oil pipe and cylinder barrel of this invention.

[0024] Figure 4 is a three-dimensional view of the bracket, welding torch, feeding cylinder, horizontal adjustment assembly, vertical adjustment assembly, and rotating assembly in the embodiment of the special welding machine for welding the return oil pipe and cylinder barrel of this invention.

[0025] Figure 5 is a three-dimensional view of the horizontal adjustment assembly in the embodiment of the special welding machine for welding the return oil pipe and cylinder barrel of this invention

[0026] Figure 6 is the movement principle diagram of each component in the embodiment of the welding method for the return oil pipe and cylinder barrel of this invention.

[0027] Explanation of the reference numerals in the drawings:

[0028] Placement base - 100; Auxiliary positioning assembly - 110; Rotary table cylinder - 111; Auxiliary bracket - 112; Bracket - 200; Substrate - 310; First motor - 320; Rotating disk - 330; Eccentric gear - 340; Sector swing disk - 350; Second motor - 360; Swing gear - 370; Feeding cylinder - 400; Horizontal adjustment assembly - 500; Adjusting housing - 510; Slide bar - 520; Slide block - 530; Adjusting lead screw - 540; Longitudinal adjustment rod - 610; Snap - 620; Welding torch - 700; Welding wire - 710; Movement track - 720; Return oil pipe - 810; Cylinder barrel - 820; Interference area - 830. Detailed implementation manners

[0029] In order to make the above objects, features and advantages of the present utility model more obvious and understandable, the following will describe in detail the specific implementation manners of the present utility model with reference to the accompanying drawings. Many specific details are set forth in the following description in order to fully understand the present utility model. However, the present utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present utility model. Therefore, the present utility model is not limited by the specific implementations disclosed below.

[0030] The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation manners.

[0031] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present utility model belongs. The terms used in the description of the present utility model herein are only for the purpose of describing specific embodiments and are not intended to limit the present utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0032] Please refer to Figures 1 to 5 。

[0033] This special welding machine for welding the oil return pipe and the cylinder barrel includes a bracket 200, a welding torch 700, an advancing cylinder 400, a horizontal adjustment assembly 500, a vertical adjustment assembly, a placement base 100 and a rotating assembly.

[0034] The lower end of the bracket 200 is fixedly installed on the placement base 100. The placement base 100 is provided with a welding station formed by a plurality of card slots, and the cylinder barrel 820 is placed on the welding station.

[0035] The placement base 100 is provided with an auxiliary positioning assembly 110. The auxiliary positioning assembly 110 includes a turntable cylinder 111 and an auxiliary bracket 112. The turntable cylinder 111 is beside the welding station. One end of the auxiliary bracket 112 is fixedly connected to the piston rod of the turntable cylinder 111, and the other end of the auxiliary bracket 112 can cooperate with the oil return pipe 810.

[0036] The rotating assembly includes a base plate 310, a first motor 320, a rotating disk 330, an eccentric gear 340, a second motor 360, a swing gear 370, and a sector swing disk 350. The base plate 310 is hinged to the bracket 200. The first motor 320 is fixed to the base plate 310 by bolts. The rotating disk 330 is fixedly installed on the output shaft of the first motor 320. The eccentric gear 340 is fixedly installed on the lower side of the rotating disk 330 by bolts. The center line of the eccentric gear 340 is not collinear with the center line of the rotating disk 330. The sector swing disk 350 is hinged to the lower side of the eccentric gear 340. The rotation axis of the sector swing disk 350 is collinear with the rotation axis of the eccentric gear 340. The second motor 360 is fixedly installed on the sector swing disk 350. The swing gear 370 is fixedly installed on the output shaft of the second motor 360. The swing gear 370 meshes with the eccentric gear 340.

[0037] Both the first motor 320 and the second motor 360 are servo motors.

[0038] The cylinder block of the feeding cylinder 400 is fixed to the sector swing disk 350 by bolts. The welding torch 700 is fixedly connected to the piston rod of the feeding cylinder 400.

[0039] The horizontal adjustment assembly 500 includes an adjustment housing 510, a slide rod 520, a slider 530, and an adjustment lead screw 540. The adjustment housing 510 is fixedly connected to the end of the piston rod of the feeding cylinder 400. The slide rod 520 is fixed inside the adjustment housing 510. The slider 530 is also arranged inside the adjustment housing 510. The slider 530 is matched with the slide rod 520. The slider 530 can reciprocate horizontally along the direction of the slide rod 520. The adjustment lead screw 540 is in threaded cooperation with the adjustment housing 510. And the end of the adjustment lead screw 540 passes through the adjustment housing 510 and is matched with the slider 530.

[0040] The vertical adjustment assembly includes a longitudinal adjustment rod 610 and a buckle 620. The upper end of the longitudinal adjustment rod 610 is fixedly connected to the slider 530 of the horizontal adjustment assembly 500. The buckle 620 can move up and down along the longitudinal adjustment rod 610. The buckle 620 is fixedly connected to the welding torch 700. The end of the welding torch 700 is provided with a bend. The welding torch 700 is filled with welding wire 710.

[0041] Please refer to Figure 6 , and use the above-mentioned special welding machine for welding the return oil pipe and the cylinder barrel to realize the welding method of the return oil pipe and the cylinder barrel, including the following steps:

[0042] a) Place the return oil pipe 810 at the opening of the cylinder barrel 820. Start the feeding cylinder 400 of the special welding machine for welding the return oil pipe and the cylinder barrel, so that the welding torch 700 descends to the working elevation. The area between the lower side of the bent section of the return oil pipe 810 and the cylinder barrel 820 forms an interference area 830 that hinders the welding operation;

[0043] b) Start the first motor 320, and the rotating disk 330 rotates by 45°; start the second motor 360, the oscillating gear 370 meshes with the eccentric gear 340, and the oscillating disk connected to the welding torch 700 moves counterclockwise along the eccentric gear 340. The welding torch 700 is aligned with the connection between the oil return pipe 810 and the cylinder barrel 820 at the upper edge of the interference area 830. Then, turn off the second motor 360. At this time, the position where the welding torch 700 is aligned is the initial position. The oscillating gear 370 is approximately at the 30° position of the eccentric gear 340, and the end of the welding torch 700 is aligned with the extension line of the rotation axis of the rotating disk 330. The attitude of the welding torch 700 is such that the projection of the end of the welding torch 700 on the horizontal plane is in the radial direction of the circle where the connection between the oil return pipe 810 and the cylinder barrel 820 is located;

[0044] c) Start the first motor 320, and the rotating disk 330 drives the eccentric gear 340, the oscillating disk and the welding torch 700 as a whole to rotate counterclockwise along the rotating disk 330 by 285° until the welding torch 700 is aligned with the connection between the oil return pipe 810 and the cylinder barrel 820 at the lower edge of the interference area 830, and then turn off the first motor 320; during this process, the welding torch 700 is started, and the welding torch 700 cooperates with the welding wire 710 to form a weld at most of the connections between the oil return pipe 810 and the cylinder barrel 820;

[0045] d) Start the second motor 360, and the oscillating disk connected to the welding torch 700 moves clockwise along the side wall of the eccentric gear 340 by 30°. Although the welding torch 700 rotates clockwise, the movement track 720 of the welding torch 700 is upwardly offset, and then the welding torch 700 extends into the interference area 830 and the welding torch 700 is aligned with the initial position again. Then, turn off the second motor 360; during this process, the welding torch 700 is started, and similarly, the welding torch 700 cooperates with the welding wire 710 to form a weld at a small part of the connections between the oil return pipe 810 and the cylinder barrel 820;

[0046] Among them, in steps c) and d), the movement track 720 of the welding torch 700 completely covers the connection between the oil return pipe 810 and the cylinder barrel 820, that is, the connection between the oil return pipe 810 and the cylinder barrel 820 is completely sealed by the weld.

[0047] According to this principle, by using the eccentric gear 340 and the servo motor to accurately control the angle reached by the welding torch 700, a special welding machine for the oil return pipe 810 is designed, which solves the problem of automatic welding of the oil return pipe 810.

[0048] The welding method of this oil return pipe and cylinder barrel realizes automation through an accurate control system during the welding process, simplifies the operation steps, reduces the operation difficulty, and improves the production efficiency. The feeding cylinder 400 and the control system equipped on the welding machine can realize the rapid lifting and positioning of the welding torch 700, further improving the welding efficiency.

[0049] The above is only one embodiment of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present utility model, several variations and improvements can be made, and these should also be regarded as falling within the protection scope of the present utility model.

Claims

1. A special welding machine for welding an oil return pipe to a cylinder barrel, comprising a bracket (200) and a welding gun (700), wherein the welding gun (700) is equipped with a welding wire (710), and wherein: The welding gun (700) is connected to the bracket (200) through a rotating assembly, wherein the rotating assembly comprises a base plate (310), a first motor (320), a rotating disk (330), an eccentric gear (340), a second motor (360), a swing gear (370) and a swing disk, wherein the base plate (310) is hinged to the bracket (200), the first motor (320) is fixedly mounted on the base plate (310), the rotating disk (330) is fixedly mounted on the output shaft of the first motor (320), and the eccentric gear (340) is fixedly connected to the base plate (310). On the lower side of the rotating disk (330), the center line of the eccentric gear (340) is not colinear with the center line of the rotating disk (330), the swing disk is hinged on the lower side of the eccentric gear (340), the rotation axis of the swing disk is colinear with the rotation axis of the eccentric gear (340), the second motor (360) is fixedly mounted on the swing disk, the swing gear (370) is fixedly mounted on the output shaft of the second motor (360), the swing gear (370) is meshed with the eccentric gear (340), and the welding gun (700) is fixedly mounted on the lower side of the swing disk.

2. The special welding machine for welding the oil return pipe to the cylinder barrel according to claim 1 is characterized in that: It also includes an advancing cylinder (400), the cylinder body of the advancing cylinder (400) is fixedly connected to the swing plate, and the welding gun (700) is fixedly connected to the piston rod of the advancing cylinder (400).

3. The special welding machine for welding the oil return pipe to the cylinder barrel according to claim 2 is characterized in that: The invention also comprises a horizontal adjustment component (500), wherein the horizontal adjustment component (500) comprises an adjustment housing (510), a sliding rod (520), a slider (530) and an adjustment screw (540); the adjustment housing (510) is fixedly connected to the end of the piston rod of the advance cylinder (400); the sliding rod (520) is fixed in the adjustment housing (510); the slider (530) is also arranged in the adjustment housing (510); the slider (530) cooperates with the sliding rod (520); the adjustment screw (540) is threadedly cooperated with the adjustment housing (510); and the end of the adjustment screw (540) passes through the adjustment housing (510) and cooperates with the slider (530).

4. The special welding machine for welding the oil return pipe to the cylinder barrel according to claim 3 is characterized in that: The invention also comprises a vertical adjustment component, which comprises a longitudinal adjustment rod (610) and a buckle (620). The upper end of the longitudinal adjustment rod (610) is fixedly connected to a slider (530) of the horizontal adjustment component (500). The buckle (620) can move up and down along the longitudinal adjustment rod (610). The buckle (620) is fixedly connected to the welding gun (700).

5. The special welding machine for welding the oil return pipe to the cylinder barrel according to claim 1 is characterized in that: It also includes a storage base (100), the lower end of the bracket (200) is fixedly connected to the storage base (100), and a welding station for placing the cylinder barrel (820) is provided on the storage base (100).

6. The special welding machine for welding the oil return pipe to the cylinder barrel according to claim 5 is characterized in that: The storage base (100) is provided with an auxiliary positioning assembly (110), the auxiliary positioning assembly (110) comprising a turntable cylinder (111) and an auxiliary bracket (112), the turntable cylinder (111) is located beside the welding station, one end of the auxiliary bracket (112) is fixedly connected to the piston of the turntable cylinder (111), and the other end of the auxiliary bracket (112) can cooperate with the oil return pipe (810).

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