Nodular cast iron pipe socket point filling device

Abstract

The utility model discloses a nodular cast iron pipe socket point filling device which comprises a vertical plate and a vertical frame arranged on a bottom plate, a first track is arranged on the vertical frame, a moving trolley is arranged on the first track, a second track perpendicular to the extending direction of the first track is arranged on the moving trolley, and the second track is arranged on the vertical frame. A movable seat is arranged on the second track, a transverse rod is arranged on the side, facing the extending direction of the second track, of the movable seat, a spot supplementing welding gun is arranged at the other end of the transverse rod, and a control cabinet connected with the movable trolley, the movable seat and the spot supplementing welding gun is arranged on the bottom plate. According to the technical scheme, movement of the spot supplementing welding gun in the same plane in two directions is achieved through the first track and the second track, the control cabinet is combined to automatically control the moving trolley and the moving base, the problem that a traditional spot supplementing device cannot adjust the position online is solved, spot supplementing can be directly completed in front of a centrifugal machine, pipe die disassembly is avoided, and production efficiency is improved. And the efficiency is effectively improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of automated welding equipment, and in particular relates to a ductile iron pipe socket patching device. Background Technology

[0002] Traditional ductile iron pipe mold socket patching process requires removing the mold from the centrifuge and transferring it to a roller support mechanism for manual patching. This method has significant drawbacks:

[0003] Inefficiency: The disassembly, handling and reinstallation of the tube molds are time-consuming and involve frequent process changes, which seriously affects production efficiency;

[0004] Unstable quality: Manual patching is easily affected by the operator's skill level, and the position and strength of the patching points are difficult to be uniform, which can easily lead to defects such as porosity and slag inclusions.

[0005] High cost: Reliance on hoisting equipment for dismantling increases equipment investment and maintenance costs;

[0006] Safety hazards: Manual operation poses safety risks such as burns from high temperatures and mechanical collisions. Summary of the Invention

[0007] The purpose of this invention is to address the problems existing in the prior art by providing a ductile iron pipe socket patching device. This device eliminates the need to disassemble the pipe mold, reduces reliance on manual labor, and solves the pain points of low efficiency, high cost, and large quality fluctuations in traditional processes.

[0008] To achieve the above objectives, the utility model adopts the following technical solution: a ductile iron pipe socket repair device, comprising a vertical plate and a frame mounted on a base plate, a first track on the frame, a trolley on the first track, a second track perpendicular to the extension direction of the first track on the trolley, a movable seat on the second track, a crossbar on the side of the movable seat facing the extension direction of the second track, a repair welding gun at the other end of the crossbar, and a control cabinet connected to the trolley, the movable seat, and the repair welding gun on the base plate.

[0009] In the above technical solution, the spot welding gun can move in two directions on the same plane through the first and second tracks. Combined with the automated control of the control cabinet for the moving trolley and moving seat, the problem of traditional spot welding devices being unable to adjust their position online is solved. Spot welding can be completed directly in front of the centrifuge, avoiding the disassembly of the tube mold and effectively improving efficiency.

[0010] Optionally, a laser emitter is provided at one end of the first track, and an ear plate is provided at the end of the mobile trolley facing the laser emitter, with a laser receiver matched to the laser emitter provided on the ear plate.

[0011] In the above technical solution, the laser emitter and receiver work together to calibrate the position of the moving trolley on the first track in real time, eliminate mechanical transmission errors, and ensure the axial alignment accuracy of the spot welding gun and the pipe mold socket.

[0012] Optionally, a connecting cylinder is fixedly provided on one side of the spot welding gun. The connecting cylinder is sleeved on the end of the crossbar away from the moving trolley. The connecting cylinder sleeve structure allows the spot welding gun to be quickly assembled and disassembled.

[0013] Optionally, the second track is a single-sided electric slide rail, with limit blocks at both ends. The limit blocks prevent the moving seat from overtraveling, improving safety; the electric drive, in conjunction with the control cabinet, enables precise stepping control.

[0014] Optionally, the movable seat is provided with a slider that is embedded in a groove inside the second track.

[0015] Optionally, it also includes two spaced-apart roller seats, on which a ductile iron pipe mold is placed. The inner wall of the roller seat is provided with a drive wheel that is attached to the outer surface of the ductile iron pipe mold. The roller seat and the drive wheel cooperate to realize the rotation of the pipe mold during the patching process, so that the welding torch can patch the spots evenly in the circumference, replacing the manual operation of flipping the pipe mold and reducing labor intensity.

[0016] Optionally, the extension direction of the ductile iron pipe mold is the same as the extension direction of the second track.

[0017] Optionally, each end of the second track is equipped with a proximity switch connected to the control cabinet. The proximity switch detects the position of the moving seat in real time and triggers the control cabinet to automatically stop or reverse its movement, thereby realizing automatic limit and emergency braking of the moving seat, preventing equipment collisions, and ensuring operational safety and equipment reliability.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. This application realizes the movement of the spot welding gun in two directions on the same plane through the first track and the second track. Combined with the automated control of the mobile trolley and the mobile seat in the control cabinet, it solves the problem that the traditional spot welding device cannot adjust the position online. Spot welding can be completed directly in front of the centrifuge, avoiding the disassembly of the tube mold and effectively improving efficiency; 2. This application uses a laser emitter and receiver to calibrate the position of the mobile trolley on the first track in real time, eliminating mechanical transmission errors and ensuring the axial alignment accuracy between the spot welding gun and the tube mold socket; 3. This application uses the cooperation of the drag wheel seat and the drive wheel to realize the rotation of the tube mold during the spot welding process, so that the welding gun can uniformly apply spots along the circumference, replacing the manual operation of flipping the tube mold and reducing labor intensity. Attached Figure Description

[0019] Figure 1 A schematic diagram of a ductile iron pipe socket patching device provided by this utility model;

[0020] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0021] Figure 3 This is a schematic diagram of a ductile iron pipe socket patching device and a ductile iron pipe mold according to the present invention.

[0022] In the diagram: 1. Base plate; 2. Frame; 3. First track; 4. Moving trolley; 5. Second track; 6. Moving seat; 7. Crossbar; 71. Connecting cylinder; 8. Spot welding gun; 9. Laser emitter; 10. Ear plate; 11. Laser receiver; 12. Control cabinet; 13. Casting wheel seat; 14. Ductile iron pipe mold. Detailed Implementation

[0023] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0024] In the description of this utility model, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0025] like Figure 1 As shown in Figure 3, the specific solution of the embodiment is as follows: A ductile iron pipe socket patching device includes a vertical plate and a frame 2 set on a base plate 1. A first track 3 is set on the frame 2, a moving trolley 4 is set on the first track 3, a second track 5 is set on the moving trolley 4 perpendicular to the extension direction of the first track 3, a moving seat 6 is set on the second track 5, a crossbar 7 is set on the side of the moving seat 6 facing the extension direction of the second track 5, and a patching welding gun 8 is set on the other end of the crossbar 7. A control cabinet 12 connected to the moving trolley 4, the moving seat 6 and the patching welding gun 8 is set on the base plate 1.

[0026] In the above technical solution, the spot welding gun 8 moves in two directions on the same plane through the first track 3 and the second track 5. Combined with the automatic control of the mobile trolley 4 and the mobile seat 6 by the control cabinet 12, the problem of the traditional spot welding device being unable to adjust its position online is solved. Spot welding can be completed directly in front of the centrifuge, avoiding the disassembly of the tube mold and effectively improving efficiency.

[0027] In this embodiment, the first track 3 is a double track, made of high-strength alloy steel. The track surface is precision ground to ensure a surface roughness of Ra1.6μm, thereby ensuring the stability and accuracy of the moving trolley 4 when moving on the track. The track has an I-shaped cross-section, with the upper and lower flanges each 120mm wide and 20mm thick, the web thickness 15mm, and a height of 180mm. This structural design ensures high bending stiffness while effectively reducing weight, facilitating installation and transportation.

[0028] Meanwhile, the mobile trolley 4 has a rectangular frame structure, with the main frame welded from thick-walled square steel pipes, measuring 600mm in length, 400mm in width, and 300mm in height. The bottom of the mobile trolley 4 is equipped with four solid polyurethane wheels, each 100mm in diameter and 30mm wide. The wheels and axles are interference-fitted and secured with high-strength lock nuts to ensure the wheels will not loosen during long-term, high-frequency reciprocating movement. The wheels are driven by a motor, which is connected to the control cabinet 12.

[0029] In this embodiment, a laser emitter 9 of model ifm01D106 is installed at one end of the first track 3. Matching this emitter, an ear plate 10 is provided at the end of the mobile trolley 4 facing the laser emitter 9. The ear plate 10 is made of 10mm thick steel plate, is vertically rectangular, and measures 150mm long × 80mm wide. A laser receiver 11 of model ifm02R010 is precisely installed on the ear plate 10. This receiver has high sensitivity, accurately captures laser signals, and converts them into electrical signals for transmission to the control cabinet 12. Through the close cooperation between the laser emitter 9 and the receiver, the control system can monitor the position coordinates of the mobile trolley 4 on the first track 3 in real time, with a position detection accuracy of ±0.5mm. This enables precise closed-loop control of the mobile trolley 4, effectively eliminating the accumulation of errors caused by component wear, gaps, and other factors during mechanical transmission. This ensures that the spot welding gun 8 is precisely aligned with the mold socket in the axial direction, with an alignment accuracy controlled within 1mm, providing a crucial guarantee for high-quality spot welding operations.

[0030] In this embodiment, the second track 5 is also made of high-strength alloy steel, with a surface roughness controlled at Ra1.6μm. Its cross-section is a dovetail structure, with an upper flange width of 80mm and a thickness of 15mm, a lower flange width of 60mm and a thickness of 12mm, a web thickness of 10mm, and a height of 150mm. This structure ensures both the strength of the track and facilitates the installation and stable sliding of the movable seat 6. The second track 5 is a single-sided electric slide rail, driven by a servo motor, model SMH02A, with a rated power of 1.5kW and a rated speed of 1400r / min. It features high torque output (rated torque of 5N·m) and high control precision (encoder resolution of 1000 pulses / revolution), enabling precise step control based on commands issued by the control cabinet 12. The displacement accuracy can reach 0.1mm / step, ensuring the accuracy and stability of the movable seat 6 when moving on the track.

[0031] Both ends of the second track 5 are equipped with limit blocks. The blocks are made of high-strength nylon material and have dimensions of 100mm in length, 80mm in width, and 50mm in height. They contain buffer springs with a spring constant of 500N / m. When the moving seat 6 approaches the end of the track, the limit blocks can effectively prevent the moving seat 6 from continuing to move forward, preventing it from overtraveling and damaging the track and the moving seat 6. At the same time, the buffer springs can absorb collision energy, reduce impact force, extend the service life of the equipment, and maximize the safety of equipment operation.

[0032] In this embodiment, the movable base 6 adopts a compact box-type structure. The outer shell is welded from a 5mm thick steel plate, with dimensions of 300mm (length) × 200mm (width) × 150mm (height). The interior is hollow to accommodate transmission components such as the drive motor. A slider that precisely matches the dovetail-shaped groove of the second track 5 is installed at the bottom of the movable base 6.

[0033] In this embodiment, proximity switches, model Pizzato02N, are installed at both ends of the second track 5. These are inductive proximity sensors with a sensing distance of 8mm and a response time of only 10ms, exhibiting high reliability and anti-interference capabilities. The proximity switches monitor the position of the moving base 6 in real time. When the moving base 6 triggers the proximity switch, the switch immediately sends a signal to the control cabinet 12. The control cabinet 12, according to a preset program, controls the motor to automatically stop or drive it to rotate in the opposite direction, achieving automatic limit and emergency braking functions for the moving base 6. This effectively prevents equipment damage due to uncontrolled collisions, greatly improving operational safety and equipment reliability, and building a solid safety barrier for supplementary work.

[0034] In this embodiment, the device also includes two spaced-apart roller seats 13. Each roller seat 13 has a semi-circular structure, made of 15mm thick steel plate rolled and welded. Its inner diameter precisely matches the outer diameter of the ductile iron pipe mold 14, ensuring stable placement of the mold. Three drive wheels are evenly distributed on the inner wall of each roller seat 13. These drive wheels are made of high-elasticity rubber material, with a wheel width of 50mm and a diameter of 120mm. Their surfaces are decorated with anti-slip patterns to enhance friction with the outer surface of the mold, ensuring no slippage occurs when the mold rotates. The roller seats 13 are connected to the drive wheels via precision bearings. The drive wheels are driven by independent servo motors (model SMH01A, rated power 1kW, rated speed 900r / min), allowing for stepless speed regulation. The rotation speed of the mold can be flexibly adjusted according to the patching process requirements, enabling the welding torch to patch evenly along the circumference. This completely replaces the traditional manual mold-flipping method, significantly reducing labor intensity and improving patching efficiency and quality stability.

[0035] The extension direction of the ductile iron pipe mold 14 is strictly aligned with the extension direction of the second track 5. This layout design ensures that the spot welding gun 8 can always maintain a perpendicular relationship with the pipe mold axis as it moves along the second track 5, ensuring that the spot welds are evenly distributed around the pipe mold, optimizing the spot welding path planning, and improving the overall accuracy and efficiency of the spot welding operation.

[0036] like Figure 1 As shown, a connecting cylinder 71 is fixedly installed on one side of the spot welding gun 8. The connecting cylinder 71 is made of high-strength aluminum alloy, with an outer diameter of 60mm, an inner diameter of 50mm, a wall thickness of 5mm, and a length of 200mm. One end of the connecting cylinder 71 is tightly connected to the spot welding gun 8 by threads, and the other end is sleeved on the end of the crossbar 7 away from the moving trolley 4. The crossbar 7 is a solid alloy steel rod with a diameter of 50mm and a length of 1000mm. This sleeved structure design is ingenious, making the disassembly and assembly of the spot welding gun 8 extremely convenient and quick. The replacement or maintenance of the welding gun can be completed within minutes, greatly improving the maintenance efficiency of the equipment and the continuity of production.

[0037] It should be noted that in this embodiment, the spot welding torch 8 body is a commercially available MAG-500M gas shielded welding torch. The torch head is equipped with a high-efficiency gas protection nozzle, which can effectively block the intrusion of external impurities and air, ensure the purity of the welding process, and further improve the quality of the spot weld.

[0038] Finally, in this embodiment, the control cabinet 12, as the nerve center of the entire compensation device, adopts a PLC control system. The core PLC model is Siemens S7-1200 series, which has powerful data processing capabilities, rich control functions, and high reliability. The control cabinet 12 integrates multiple analog and digital input / output modules to receive signals from various sensors such as the laser transmitter 9 and receiver, proximity switches, and limit blocks, and to send precise control commands to actuators such as servo motors and drive wheel motors.

[0039] like Figure 1 As shown, the external operating interface of control cabinet 12 uses a 15.6-inch color touchscreen. Operators can set parameters via the touchscreen, including the running speed and acceleration of the moving trolley 4 and the moving seat 6, the welding current and voltage of the welding torch, the wire feeding speed, and the rotation speed of the die, among other process parameters. Simultaneously, the touchscreen displays the real-time operating status of the equipment, such as the position coordinates of each component, the motor speed and torque, and the working current and voltage of the welding torch, allowing operators to monitor the progress of supplementary operations at any time and promptly identify and handle any abnormalities. Furthermore, control cabinet 12 is equipped with remote communication interfaces, such as an Ethernet interface and an RS485 serial port, which can be connected to the factory's host computer monitoring system to achieve remote data transmission and centralized management, facilitating intelligent control and quality traceability of the production process.

[0040] This ductile iron pipe socket patching device, through the precise coordination of a dual-track drive system and an automated control system, achieves flexible and accurate positioning of the patching welding gun 8 within a plane. Combined with a pipe mold rotation system, it can efficiently complete omnidirectional and uniform patching operations on the socket of ductile iron pipes. Its innovative structural design and the application of advanced components effectively solve the prominent problems of traditional patching devices, such as difficulty in position adjustment, low patching accuracy, and high labor intensity. It significantly improves the patching quality and production efficiency of ductile iron pipes, possessing extremely high practical value and broad application prospects. Promoting the application of this device in ductile iron pipe manufacturing enterprises can not only optimize production processes and reduce production costs, but also improve product quality stability, enhance enterprise market competitiveness, and provide strong support for the technological upgrading and sustainable development of the ductile iron pipe industry. It is expected to become the mainstream technical solution for patching operations in this field in the future.

[0041] The working principle of the above embodiment is as follows: The control cabinet 12 starts the motor to drive the mobile trolley 4 to move on the first track 3, and simultaneously drives the mobile seat 6 to move on the second track 5. The coordinated movement of the two tracks enables the spot welding torch 8 to achieve precise dual-axis positioning in the plane, solving the problem of difficult position adjustment in traditional spot welding devices. The laser emitter 9 at one end of the first track 3 works in conjunction with the laser receiver 11 on the mobile trolley 4 to monitor and calibrate the trolley position in real time, eliminating mechanical errors and ensuring precise axial alignment between the welding torch and the pipe mold socket. The proximity switches at both ends of the second track 5 monitor the position of the mobile seat 6 in real time, triggering the control cabinet 12 to achieve automatic limit and emergency braking, ensuring operational safety. The pipe mold is placed on the drag wheel seat 13, and the drive wheel drives the pipe mold to rotate, so that the welding torch can evenly spot welds along the circumference.

[0042] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A ductile cast iron pipe socket patching device comprising a vertical plate and a vertical stand arranged on a base plate, characterized in that: The upright frame is provided with a first track, a mobile trolley is provided on the first track, a second track is provided on the mobile trolley perpendicular to the extension direction of the first track, a mobile seat is provided on the second track, a crossbar is provided on the side of the mobile seat facing the extension direction of the second track, and a spot welding gun is provided at the other end of the crossbar. A control cabinet connected to the mobile trolley, the mobile seat and the spot welding gun is provided on the base plate.

2. The device for repairing the socket of nodular cast iron pipe according to claim 1, characterized in that: A laser emitter is provided at one end of the first track, and an ear plate is provided at the end of the mobile trolley facing the laser emitter. A laser receiver that matches the laser emitter is provided on the ear plate.

3. The device for repairing the socket of nodular cast iron pipe according to claim 1, characterized in that: A connecting cylinder is fixedly installed on one side of the spot welding gun, and the connecting cylinder is sleeved on the end of the crossbar away from the moving trolley.

4. The ductile iron pipe socket patching device according to claim 1, characterized in that: The second track is a single-sided electric slide rail, and limit blocks are provided at both ends of the second track.

5. The ductile iron pipe socket patching device according to claim 1, characterized in that: The movable seat is equipped with a slider that is embedded in the internal groove of the second track.

6. The ductile iron pipe socket patching device according to claim 1, characterized in that: It also includes two spaced-apart towing wheel seats, on which ductile iron pipe molds are placed, and the inner wall of the towing wheel seats is provided with drive wheels that are attached to the outer surface of the ductile iron pipe molds.

7. The ductile iron pipe socket patching device according to claim 6, characterized in that: The extension direction of the ductile iron pipe mold is the same as the extension direction of the second track.

8. The ductile iron pipe socket patching device according to claim 1, characterized in that: The second track is equipped with proximity switches at both ends, which are connected to the control cabinet.

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