Automatic collapsing device for welding air duct

Abstract

The utility model discloses a welding air pipe automatic contraction device, including the protection box, the bottom in the protection box is installed with the guide rail, one side of the upper end of guide rail is installed with hydraulic telescopic mechanism, the upper end of guide rail one side is connected with the rotating equipment of sliding, one end of rotating equipment is connected with the bearing structure, one end of hydraulic telescopic mechanism is connected in one end of rotating equipment, the rotating equipment includes the support frame of sliding connection one side on the upper end of guide rail, the upper end of support frame is installed with the speed reducer, and the servo motor is connected on the speed reducer, the hydraulic telescopic mechanism includes the hydraulic cylinder of installation one side on the upper end of guide rail, the utility model solves the problem that the artificial arrangement is inefficient and the high risk of frequent winding, and the expansibility is strong, can be adapted to different diameter air pipe, can realize quick retraction simultaneously, improves the efficiency, realizes the unity of security, efficiency, reliability, improves production efficiency and operation comfort degree significantly, and the practicality is strengthened.

Description

Technical Field

[0001] This utility model relates to the field of automatic shrinkage technology for welding gas pipes, and more particularly to an automatic shrinkage device for welding gas pipes. Background Technology

[0002] In modern industrial manufacturing, especially in automated welding production lines, shielding gases (such as CO2, Ar, etc.) are delivered to the welding torch nozzle through the gas pipe body to isolate the weld pool from air, prevent oxidation, and ensure welding quality. However, in actual operation, traditional fixed or free-draft gas pipe arrangements have the following drawbacks: 1. High risk of frequent entanglement: During robot movement, workpiece handling, and manual intervention, the air tube is very prone to entanglement with fixtures, workpiece edges, and equipment supports, which may cause excessive local stress or even damage and leakage. 2. Gas supply interruption affects process stability: Once the gas pipe is pulled or blocked, the interruption of the protective gas supply time is short (usually ≥2 minutes), but it is enough to cause defects such as porosity and cracks in the weld, which directly affects the product qualification rate and rework cost. 3. Significant safety hazards: Scattered air pipes on the ground become a "tripping point," especially in poorly lit or fast-paced workshop environments, which can easily cause people to slip and fall, violating safety production regulations; 4. Low efficiency of manual sorting: Operators need to bend over repeatedly to check and manually straighten the airway. Each sorting is time-consuming and repetitive, which not only increases labor intensity but also significantly reduces the effective working time per unit of working hours.

[0003] Therefore, we propose an automatic shrinkage device for welding gas pipes to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing an automatic shrinkage device for welding gas pipes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: An automatic shrink-off device for welding gas pipes includes a protective box. A guide rail is installed at the bottom of the protective box. A hydraulic telescopic mechanism is installed on one side of the upper end of the guide rail. A rotating device is slidably connected to one side of the upper end of the guide rail. One end of the rotating device is connected to a load-bearing structure. One end of the hydraulic telescopic mechanism is connected to one end of the rotating device. The rotating device includes a support frame slidably connected to one side of the upper end of the guide rail, a speed reducer is installed at the upper end of the support frame, and a servo motor is connected to the speed reducer; The hydraulic telescopic mechanism includes a hydraulic cylinder installed on one side of the upper end of the guide rail, and the end of the piston rod of the hydraulic cylinder is connected to one side of the reducer through a mounting plate; The load-bearing structure includes a load-bearing frame fixed to one side of the support frame, a rotating roller rotatably connected between opposite side walls inside the load-bearing frame, an air pipe body wound on the rotating roller, the output shaft of the reducer passing through the side wall of the load-bearing frame and connected to one side of the rotating roller, and an opening provided on one side of the protective box, through which the load-bearing frame passes.

[0006] Preferably, a support base is fixed at the bottom of the protective box, and the guide rail is fixed to the support base by a plurality of first screws.

[0007] Preferably, a slider is fixed to the lower end of the support frame, and the lower end of the slider is engaged with the guide rail.

[0008] Preferably, a mounting bracket is fixed to one side of the upper end of the guide rail, the hydraulic cylinder is mounted on the mounting bracket, and one end of the hydraulic cylinder penetrates the side wall of the protective box.

[0009] Preferably, the upper end of the protective box is fitted with a cover, and the four corners of the cover are connected to the protective box by second screws.

[0010] Preferably, a reinforcing plate is fixed to the lower end of the support frame, and one side of the reinforcing plate is fixed to one side of the support frame.

[0011] In this utility model, when in use: 1. Initial standby state: The support frame and the air pipe body are completely housed in the box, the servo motor is stationary, and the hydraulic cylinder is in the retracted position; the two ends of the air pipe are connected to the air pump and the welding torch nozzle respectively, and are in a relaxed pre-connection state. 2. Extension preparation stage: After receiving the "start welding" signal, the operator starts the hydraulic cylinder through the control panel and control system. The piston rod pushes the mounting plate, which drives the support frame to slide outward along the guide rail. The slider moves smoothly on the guide rail to ensure the linearity of the motion trajectory. The entire rotating equipment moves forward synchronously with the load-bearing structure until one end of the load-bearing frame extends out of the protective box opening. 3. Tracheal release phase: The servo motor starts, and after the speed is reduced and the torque is increased by the reducer, it drives the output shaft. The output shaft passes through the side wall of the support frame and is rigidly connected to the rotating roller. The rotating roller rotates in the opposite direction (relative to the winding direction) and slowly releases the air tube body wound on it. The operator can adjust the release length and speed through the handheld control panel according to the actual distance requirements. Then, the two ends of the air tube body are installed on the air pump and the gun body respectively. 4. Automatic recycling after use: After welding is completed, the control system reverses the command to make the servo motor rotate forward, and the rotating roller rotates clockwise, so that the air pipe is evenly and neatly rewound to the surface of the roller. Simultaneously, the hydraulic cylinder is triggered to retract, pulling the entire load-bearing system back into the protective box, completing a complete cycle and providing full protection. The contraction force is precisely controlled by the servo to avoid damage to the air pipe due to excessive tightness or tangling due to excessive looseness.

[0012] This utility model has the following advantages: 1. The hydraulic system provides long stroke and high thrust linear motion capability, suitable for rapid displacement of heavy loads. The servo system realizes high-precision angle control and torque feedback to ensure constant tension of air hose release. The two work together to form an automatic operation of "first out then release, first retract then retreat". 2. Modular structure design, easy maintenance and strong expandability, can be adapted to air tubes of different diameters, only the corresponding size of the rotating roller needs to be replaced; 3. The trachea is always under control to prevent "flying wires" from entering. The protective box isolates external interference and prevents foreign objects from entering the transmission mechanism. 4. The time for a single tracheal adjustment is reduced from ≥2 minutes to nearly 0 seconds. Operators do not need to bend over or pull, reducing occupational injuries and significantly improving production efficiency and work comfort. It is especially suitable for flexible production lines with frequent changes in multiple varieties and small batches. In summary, this utility model solves the problems of low efficiency and high risk of frequent tangling in manual sorting. It is convenient, highly expandable, and can be adapted to air tubes of different diameters. At the same time, it can achieve rapid retraction and extension, improving efficiency. It achieves a balance of safety, efficiency, and reliability, significantly improving production efficiency and work comfort, and enhancing practicality. Attached Figure Description

[0013] Figure 1 This is a structural diagram of the present invention; Figure 2 This is a structural diagram of the protective box of this utility model; Figure 3 for Figure 1 Enlarged view of the structure at point A.

[0014] In the diagram: 101 Support base, 102 Guide rail, 103 First screw, 104 Slider, 201 Mounting bracket, 202 Hydraulic cylinder, 301 Servo motor, 302 Reducer, 303 Support frame, 304 Mounting plate, 401 Bearing frame, 402 Rotating roller, 403 Air pipe body, 404 Reinforcing plate, 501 Second screw, 502 Cover, 503 Protective box. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0016] Reference Figure 1-3 The welding gas pipe automatic retraction device includes a protective box 503. A guide rail 102 is installed at the bottom of the protective box 503. A hydraulic telescopic mechanism is installed on one side of the upper end of the guide rail 102. A rotating device is slidably connected to one side of the upper end of the guide rail 102. One end of the rotating device is connected to a load-bearing structure. One end of the hydraulic telescopic mechanism is connected to one end of the rotating device. The guide rail 102 adopts a high-precision linear slide rail. The surface of the guide rail is coated with tungsten carbide, which significantly extends the service life and reduces the jamming problem caused by dust intrusion. The rotating device includes a support frame 303 that is slidably connected to one side of the upper end of the guide rail 102. A reducer 302 is installed on the upper end of the support frame 303. A servo motor 301 is connected to the reducer 302. The servo motor 301 estimates the real-time output torque based on its own current feedback and dynamically adjusts the speed and torque in combination with the PID algorithm. The hydraulic telescopic mechanism includes a hydraulic cylinder 202 installed on one side of the upper end of the guide rail 102. The piston rod end of the hydraulic cylinder 202 is connected to one side of the reducer 302 through the mounting plate 304. During the hydraulic extension process, the servo motor remains stationary and locks the output shaft to prevent the air pipe from coming loose prematurely due to inertia. The load-bearing structure includes a load-bearing frame 401 fixed to one side of the support frame 303. A rotating roller 402 is rotatably connected between opposite side walls inside the load-bearing frame 401. An air pipe body 403 is wound on the rotating roller 402. The output shaft of the reducer 302 passes through the side wall of the load-bearing frame 401 and is connected to one side of the rotating roller 402. An opening is provided on one side of the protective box 503. The load-bearing frame 401 passes through the opening. A screw cable routing device is provided on the rotating roller 402. The air pipes are arranged evenly layer by layer as the rotating roller rotates. The bottom of the protective box 503 is fixed with a support base 101. The guide rail 102 is fixed to the support base 101 by multiple first screws 103. The lower end of the support frame 303 is fixed with a slider 104. The lower end of the slider 104 is snapped onto the guide rail 102. The upper side of the guide rail 102 is fixed with a mounting bracket 201. The hydraulic cylinder 202 is mounted on the mounting bracket 201. One end of the hydraulic cylinder 202 penetrates the side wall of the protective box 503. The box body is made of 304 stainless steel with epoxy powder coating. A mushroom head type emergency stop switch is installed on the outside of the protective box 503. Any abnormality can immediately cut off the power and hydraulic source. The protective box 503 is equipped with a cover 502 at the top. The four corners of the cover 502 are connected to the protective box 503 by the second screw 501. An EPDM rubber sealing ring is set between the cover 502 and the box body, and quick-release wing nuts are used at the four corners instead of ordinary screws for easy maintenance. A reinforcing plate 404 is fixed to the lower end of the support frame 401. One side of the reinforcing plate 404 is fixed to one side of the support frame 303. The reinforcing plate 404 is welded to the junction of the bottom of the support frame and the side wall to form a triangular support structure, which effectively suppresses vibration deformation. In this utility model, when in use: 1. Initial standby state: The support frame 401, together with the air pipe body 403, is completely stored in the box. The servo motor 301 is stationary, and the hydraulic cylinder 202 is in the retracted position. The two ends of the air pipe are respectively connected to the air pump and the welding torch nozzle, and are in a relaxed pre-connection state. 2. Extension preparation stage: After receiving the "start welding" signal, the operator starts the hydraulic cylinder 202 through the control panel and control system. The piston rod pushes the mounting plate 304, which drives the support frame 303 to slide outward along the guide rail 102. The slider 104 moves smoothly on the guide rail to ensure the linearity of the motion trajectory. The entire rotating equipment moves forward synchronously with the bearing structure until one end of the bearing frame 401 extends out of the protective box opening. 3. Tracheal release phase: Servo motor 301 starts, and after speed reduction and torque increase by reducer 302, it drives output shaft. Output shaft passes through the side wall of support frame and is rigidly connected to rotating roller 402. Rotating roller rotates in the opposite direction (relative to the winding direction) and slowly releases air tube body 403 wound on it. The operator can adjust the release length and speed through handheld control panel according to the actual distance requirements. Then, the two ends of air tube body 403 are respectively installed on air pump and gun body. 4. Automatic recycling after use: After welding is completed, the control system reverses the command to make the servo motor rotate forward, and the rotating roller 402 rotates clockwise to rewind the air pipe evenly and neatly onto the roller surface; at the same time, the hydraulic cylinder is triggered to retract, pulling the entire load-bearing system back into the protective box to complete a complete cycle and provide full protection. The contraction force is precisely controlled by the servo to avoid damage to the air pipe due to excessive tightness or tangling due to excessive looseness.

[0017] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. An automatic shrink-wrap device for welding gas pipes, including a protective box (503), characterized in that, The bottom of the protective box (503) is equipped with a guide rail (102), and a hydraulic telescopic mechanism is installed on one side of the upper end of the guide rail (102). A rotating device is slidably connected to one side of the upper end of the guide rail (102). One end of the rotating device is connected to a load-bearing structure, and one end of the hydraulic telescopic mechanism is connected to one end of the rotating device. The rotating device includes a support frame (303) slidably connected to one side of the upper end of the guide rail (102), a reducer (302) is installed on the upper end of the support frame (303), and a servo motor (301) is connected to the reducer (302). The hydraulic telescopic mechanism includes a hydraulic cylinder (202) installed on one side of the upper end of the guide rail (102), and the end of the piston rod of the hydraulic cylinder (202) is connected to one side of the reducer (302) through a mounting plate (304); The bearing structure includes a bearing frame (401) fixed to one side of the support frame (303), a rotating roller (402) rotatably connected between opposite side walls inside the bearing frame (401), an air pipe body (403) wound on the rotating roller (402), the output shaft of the reducer (302) passes through the side wall of the bearing frame (401) and is connected to one side of the rotating roller (402), and an opening is provided on one side of the protective box (503), through which the bearing frame (401) passes.

2. The automatic shrinkage device for welding gas pipes according to claim 1, characterized in that: The bottom of the protective box (503) is fixed with a support base (101), and the guide rail (102) is fixed to the support base (101) by a plurality of first screws (103).

3. The automatic shrinkage device for welding gas pipes according to claim 1, characterized in that: The lower end of the support frame (303) is fixed with a slider (104), and the lower end of the slider (104) is engaged with the guide rail (102).

4. The automatic shrinkage device for welding gas pipes according to claim 1, characterized in that: A mounting bracket (201) is fixed on one side of the upper end of the guide rail (102), and the hydraulic cylinder (202) is mounted on the mounting bracket (201). One end of the hydraulic cylinder (202) penetrates the side wall of the protective box (503).

5. The automatic shrinkage device for welding gas pipes according to claim 1, characterized in that: The protective box (503) is equipped with a cover (502) at the upper end, and the four corners of the cover (502) are connected to the protective box (503) by a second screw (501).

6. The automatic shrinkage device for welding gas pipes according to claim 1, characterized in that: A reinforcing plate (404) is fixed to the lower end of the support frame (401), and one side of the reinforcing plate (404) is fixed to one side of the support frame (303).

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