Welding gun overheating warning and protecting system
By introducing a monitoring system with a DC generator and temperature sensor into the welding torch, the problem of welding torch overheating and burning out was solved, realizing real-time temperature monitoring and automatic protection during the welding process, thus improving welding safety and equipment lifespan.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JINAN UNIARC WELDING TECHNOLOGY LTD CN
- Filing Date
- 2025-04-21
- Publication Date
- 2026-05-19
AI Technical Summary
During the welding process, the welding torch often burns out due to overheating because the cooling system is often left on, indicating a lack of effective protective measures.
A DC generator and temperature sensor are introduced into the welding torch. The cable temperature is monitored by a single-chip microcomputer. A red warning light and control switch are set to realize real-time monitoring and automatic protection of the welding torch temperature.
Promptly warn and disconnect the power supply to prevent the welding torch from overheating and burning out, thereby improving welding safety and extending equipment lifespan.
Smart Images
Figure CN224254422U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of welding technology, specifically to a welding torch overheat warning and protection system. Background Technology
[0002] A welding torch is the part used in the welding process to perform the welding operation. It is a tool used for gas welding, shaped like a gun with a nozzle at the front that sprays a high-temperature flame as a heat source. It is flexible, convenient, quick, and the process is simple. However, currently, there is no related protection in similar products used for welding and cutting. It is common for the cooling system to be forgotten and the welding torch to burn out. Therefore, this utility model proposes a welding torch overheat warning and protection system to solve the above problems. Summary of the Invention
[0003] The purpose of this invention is to provide a welding torch overheat warning and protection system to solve the problems mentioned in the background art.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a welding torch overheat warning and protection system, including...
[0005] The welding torch tip has a rear tail shell fitted on the outer side of its rear end. A protective sleeve and a locking ring are fitted on the outer side of the welding torch tip at the front end of the rear tail shell. The locking ring is threaded to the outer side of the front end of the rear tail shell. A connecting nut is threaded to the outer side of the rear end of the rear tail shell. An installation cavity is formed inside the rear tail shell. A spring is fitted on the outer side of the welding torch tip.
[0006] The mounting cavity has a central socket at its left end. The central socket is connected to an air pipe and an electrical power cable, and is also connected to a cooling pipe, which includes an inlet pipe and an outlet pipe. The inlet pipe is connected to the central socket, and the outlet pipe is connected to the inside of the welding torch tip. The central socket is also connected to a circulating water pipe, which is connected to the inlet pipe and the outlet pipe at its two ends, respectively. The ends of the inlet pipe and the outlet pipe pass through the rear tail shell and are connected to the lower end. A water pipe support is provided on the outside, and water pipe plugs are also fitted on the ends of the inlet pipe and the outlet pipe.
[0007] Preferably, a temperature sensor is fixedly connected to one side of the central socket, a DC generator is connected in the middle of the air pipe, and a microcontroller is fixedly connected to one side of the mounting cavity. The microcontroller is connected to the DC generator, the temperature sensor, and the control switch via wires.
[0008] Preferably, one end of the temperature sensor is connected to a wire, which is electrically connected to the microcontroller unit. The temperature sensor is fixedly connected to one side of the central socket by a fixing screw, and the detection end of the temperature sensor is in contact with the power cable.
[0009] Preferably, the microcontroller unit includes a circuit board at the lower end, on which a rechargeable battery, a microcontroller, a signal light, and electronic components are soldered via pins. The end of the signal light passes through a corresponding signal light hole opened on the side wall of the rear tail shell and is connected to the outside. The rechargeable battery is electrically connected to a DC generator via a wire. A switch control line is connected to the lower end of the circuit board and is electrically connected to a control switch via the switch control line.
[0010] Preferably, a support structure is provided at the lower end of the circuit board, and fastening screws are connected to the four corners of the circuit board. The microcontroller unit is fixedly connected to the support structure by the fastening screws. The support structure is sleeved on the outside of the pipe and cable structure in the installation cavity.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] This invention connects a DC generator to the gas pipe of an existing welding torch. The generator generates electricity and stores it in a rechargeable battery within a microcontroller unit. The battery power is used by the microcontroller and indicator lights. The microcontroller monitors the resistance heating of the power cable. If the welder forgets to turn on the cooling system or the cooling system fails to provide adequate cooling, causing the cable resistance heating to exceed a safe value, the system will promptly activate a red safety warning light and cut off the power to stop the welding operation. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model;
[0014] Figure 2 for Figure 1 Schematic diagram of the structure in direction A of the utility model;
[0015] Figure 3 for Figure 1 A perspective view of this utility model.
[0016] In the diagram: 1. Central socket, 101. Fixing screw, 102. Temperature sensor, 2. Microcontroller unit, 201. Warning light, 202. Fastening screw, 3. DC generator, 4. Connecting nut, 5. Switch control line, 6. Air pipe, 7. Rear tail shell, 8. Sheath fixing ring, 9. Sheath, 10. Locking ring, 11. Spring, 12. Power cable, 13. Water inlet pipe, 14. Water outlet pipe, 15. Water pipe support, 16. Water pipe plug. Detailed Implementation
[0017] To make the objectives, technical solutions, and advantages of this utility model clear and complete, the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only some, not all, embodiments of this utility model, and are merely used to explain the embodiments of this utility model. They are not intended to limit 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.
[0018] In the description of this utility model, it should be noted that the terms "center," "middle," "upper," "lower," "left," "right," "inner," "outer," "top," "bottom," "side," "vertical," and "horizontal," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "a," "first," "second," "third," "fourth," "fifth," and "sixth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0020] For purposes of simplicity and illustration, the principles of the embodiments are described primarily by way of example. In the following description, numerous specific details are set forth to provide a thorough understanding of the embodiments. However, it will be apparent to those skilled in the art that these embodiments may not be limited to these specific details in practice. In some instances, well-known methods and structures have not been described in detail to avoid unnecessarily obscuring these embodiments. Furthermore, all embodiments can be used in combination with each other.
[0021] Please see Figures 1 to 3 This utility model provides a technical solution: a welding torch overheat warning and protection system, including...
[0022] The welding torch tip has a rear tail shell 7 sleeved on the outer side of the rear end of the welding torch tip. The front end of the rear tail shell 7 is covered with a protective sleeve 9 and a locking ring 10. The locking ring 10 is threaded to the outer side of the front end of the rear tail shell 7. The rear end of the rear tail shell 7 is threaded to a connecting nut, forming an installation cavity inside the rear tail shell 7. A spring 11 is sleeved on the outer side of the welding torch tip.
[0023] The installation cavity has a central socket 1 at the left end inside. The end of the central socket 1 is connected to the air pipe 6 and electrically connected to the power cable 12. It is also connected to a cooling pipe, which includes an inlet pipe 13 and an outlet pipe 14. The inlet pipe is connected to the central socket 1, and the outlet pipe 14 is connected to the inside of the welding torch tip. The end of the central socket 1 is also connected to a circulating water pipe. The two ends of the circulating water pipe are connected to the inlet pipe 13 and the outlet pipe 14 respectively. The ends of the inlet pipe 13 and the outlet pipe 14 pass through the rear tail shell 7 and are connected to the lower end. A water pipe support 15 is provided on the outside. A water pipe plug 16 is also fitted on the ends of the inlet pipe 13 and the outlet pipe 14.
[0024] A temperature sensor 102 is fixedly connected to one side of the central socket 1. A DC generator 3 is connected in the middle of the air pipe 6. A microcontroller unit 2 is fixedly connected to one side of the mounting cavity. The microcontroller unit 2 is connected to the DC generator 3, the temperature sensor 102 and the control switch through wires. By connecting the DC generator 3 in the air pipe 6, the DC generator 3 can generate electricity through airflow. The electricity is transmitted through wires to the rechargeable battery 202 stored in the microcontroller unit 2, which can power the microcontroller and the indicator light 5 to ensure the working effect.
[0025] One end of the temperature sensor 102 is connected to a wire, which is electrically connected to the microcontroller unit 2. The temperature sensor 102 is fixedly connected to one side of the central socket 1 by a fixing screw 101. The detection end of the temperature sensor 102 is in contact with the power cable 12.
[0026] The microcontroller unit 2 includes a circuit board at the lower end. A rechargeable battery, a microcontroller, an indicator light 201, and electronic components are soldered onto the circuit board via pins. The end of the indicator light 201 passes through a corresponding indicator light hole opened on the side wall of the rear tail shell 7 and connects to the outside. The rechargeable battery is electrically connected to the DC generator 3 via wires. A switch control line 5 is connected to the lower end of the circuit board and is electrically connected to a control switch via the switch control line 5. The temperature sensor 102 can monitor the temperature change of the power cable 12 in real time. When the temperature reaches the set value, the temperature sensor 102 will feed the data back to the microcontroller unit 2, and the microcontroller unit 2 will cut off the power supply through logic judgment, cut off the power supply of the welding gun, and light up the red indicator light 201 to warn of the overheating and burn out the welding gun, and remind the operator to avoid safety hazards.
[0027] A bracket structure is provided at the lower end of the circuit board, and fastening screws 202 are connected to the four corners of the circuit board. The microcontroller unit 2 is fixedly connected to the bracket structure by the fastening screws 202. The bracket structure is sleeved on the outside of the pipe and cable structure in the installation cavity. The bracket structure can ensure the installation stability of the microcontroller unit 2 and reduce contact with the power cable 12 and other heat-generating components to avoid high-temperature damage.
[0028] 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 welding torch overheat warning and protection system, characterized in that: include The welding torch tip has a rear tail shell (7) fitted on the outer side of the rear end of the welding torch tip. The front end of the rear tail shell (7) is fitted with a protective sleeve (9) and a locking ring (10). The locking ring (10) is threaded to the outer side of the front end of the rear tail shell (7). The outer side of the rear end of the rear tail shell (7) is threaded to a connecting nut. An installation cavity is formed inside the rear tail shell (7). A spring (11) is fitted on the outer side of the welding torch tip. The mounting cavity has a central socket (1) at the left end inside. The end of the central socket (1) is connected to the air pipe (6) and electrically connected to the power cable (12). It is also connected to a cooling pipe, which includes an inlet pipe (13) and an outlet pipe (14). The inlet pipe is connected to the central socket (1), and the outlet pipe (14) is connected to the inside of the welding torch end. The end of the central socket (1) is also connected to a circulating water pipe. The two ends of the circulating water pipe are connected to the inlet pipe (13) and the outlet pipe (14) respectively. The ends of the inlet pipe (13) and the outlet pipe (14) pass through the rear tail shell (7) and are connected to the lower end. A water pipe support (15) is provided on the outside. A water pipe plug (16) is also provided on the ends of the inlet pipe (13) and the outlet pipe (14).
2. The welding torch overheat warning and protection system according to claim 1, characterized in that: A temperature sensor (102) is fixedly connected to one side of the central socket (1), a DC generator (3) is connected in the middle of the air pipe (6), and a single-chip microcomputer (2) is fixedly connected to one side of the mounting cavity. The single-chip microcomputer (2) is connected to the DC generator (3), the temperature sensor (102), and the control switch through wires.
3. The welding torch overheat warning and protection system according to claim 2, characterized in that: One end of the temperature sensor (102) is connected to a wire, which is electrically connected to the microcontroller unit (2). The temperature sensor (102) is fixedly connected to one side of the central socket (1) by a fixing screw (101). The detection end of the temperature sensor (102) is in contact with the power cable (12).
4. The welding torch overheat warning and protection system according to claim 2, characterized in that: The microcontroller unit (2) includes a circuit board at the lower end. A rechargeable battery, a microcontroller, a signal light (201), and electronic components are soldered onto the circuit board via pins. The end of the signal light (201) passes through a corresponding signal light hole opened on the side wall of the rear tail shell (7) and is connected to the outside. The rechargeable battery is electrically connected to a DC generator (3) via a wire. A switch control line (5) is connected to the lower end of the circuit board and is electrically connected to a control switch via the switch control line (5).
5. The welding torch overheat warning and protection system according to claim 4, characterized in that: The lower end of the circuit board is provided with a bracket structure, and the four corners of the circuit board are connected with fastening screws (202). The single-chip microcomputer unit (2) is fixedly connected to the bracket structure by the fastening screws (202). The bracket structure is sleeved on the outside of the pipe and cable structure in the installation cavity.