Overheat protection double-pulse gas shielded welding machine

Abstract

The utility model discloses an overheating protection dipulse gas shielded welding machine which comprises a welding machine body, a power adjusting knob and a temperature sensing driver, the power adjusting knob is connected with the output end of the welding machine body and used for adjusting the output power of the welding machine body, and the bottom end of the temperature sensing driver is fixed to the surface of a power module of the welding machine body in an adhesive mode. The power adjusting knob comprises a knob seat, a rotating shaft rod and a knob fixed at the top end of the rotating shaft rod, an indexing cover and an insulating plate are fixedly mounted on the surface of the knob seat, and a plurality of connecting electrodes are arranged on the surface of the insulating plate. According to the utility model, through the combination of the knob adjusting device and the temperature sensing driver, automatic power adjustment can be realized when the welding machine is overheated, and mechanical adjustment is adopted, so that multi-gear adjustment of power, slow drop of output power gears and overheat protection functions are carried out during temperature rise, so that the service life of the welding machine is effectively prolonged, and the working efficiency of the welding machine is improved. And the stability and the safety of the equipment are improved.

Description

Technical Field

[0001] This utility model relates to the field of welding machine thermal protection technology, specifically to an overheat protection dual-pulse gas shielded welding machine. Background Technology

[0002] In traditional welding machines, power regulation is typically achieved through a combination of electronic temperature sensors and power regulators. When the welding machine reaches a certain temperature threshold, the temperature sensor detects the temperature change and sends a signal to the power regulator, which then adjusts the power based on the sensor's feedback. The advantage of this type of system is its relatively simple electronic control method, its ability to quickly respond to temperature changes, and its suitability for various welding applications. However, this type of electronic control system relies on the stability of its circuit components and is prone to problems such as signal delay and increased error under harsh conditions such as high temperatures and vibrations. Furthermore, frequent adjustments to electronic components can increase the wear and tear on the power regulator, thereby shortening the welding machine's lifespan.

[0003] However, traditional electronic temperature control systems have certain drawbacks, primarily poor circuit stability and susceptibility to damage. On one hand, in high-temperature operating environments, the circuitry of electronic temperature sensors and power regulators is highly susceptible to interference, potentially leading to inaccurate temperature detection or even regulation failure. On the other hand, the frequent switching and power adjustments of traditional systems require continuous circuit operation, resulting in poor equipment durability and difficulty meeting the requirements of long-term, high-power welding operations. Therefore, existing temperature control technologies have shortcomings in equipment stability and lifespan, necessitating a more reliable and low-maintenance overheat protection and power regulation method to improve the safety and durability of welding machines. In view of this, this study researches and improves upon existing problems, providing an overheat protection dual-pulse gas-shielded welding machine to address current issues, aiming to solve problems and enhance practical value through this technology. Utility Model Content

[0004] The present invention aims to solve the technical problems existing in the prior art or related technologies.

[0005] This utility model provides an overheat protection dual-pulse gas shielded welding machine, comprising: a welding machine body, a power adjustment knob, and a temperature sensing actuator. The power adjustment knob is connected to the output end of the welding machine body and is used to adjust the output power of the welding machine body; the bottom end of the temperature sensing actuator is adhered and fixed to the surface of the power module of the welding machine body. The power adjustment knob includes a knob seat, a rotating shaft, and a knob fixed to the top end of the rotating shaft. A dividing cover and an insulating plate are fixedly installed on the surface of the knob seat, and the surface of the insulating plate is provided with several electrodes. A spring plate and an electrode ring located inside the knob seat are fixedly sleeved on the surface of the rotating shaft. The electrode ring is used to connect with each electrode during rotation. The rotating shaft is rotatably sleeved inside the knob seat and located at the axis of the spring plate and the insulating plate. The temperature sensing actuator includes a temperature-sensing liquid cylinder, a piston plate, a push rod, and a rotating sleeve rod rotatably installed on the top surface of the temperature-sensing liquid cylinder. The top end of the rotating sleeve rod is fixedly connected to the bottom end of the rotating shaft rod. The piston plate is slidably mounted inside the temperature-sensing liquid cylinder, and its bottom surface is provided with several piston rods. The top surface of the temperature-sensing liquid cylinder has several hydraulic holes arranged corresponding to the piston rods. A helical rod is fixedly mounted at the top of the push rod, and the helical rod is movably sleeved inside the helical sleeve rod. Through this structure, when the welding machine temperature rises, the temperature-sensing liquid cylinder and piston plate in the temperature-sensing actuator are linked to achieve temperature-adaptive power adjustment, thus achieving overheat protection.

[0006] In a preferred embodiment, this invention can be further configured such that: the top surface of the spring plate elastically abuts against the bottom surface of the indexing cover, and the bottom surface of the indexing cover is provided with alignment grooves corresponding one-to-one with the electrodes; the top surface of the spring plate is provided with elastic contacts that fit into the alignment grooves. This structure allows for accurate power level switching during rotation, and the fit between the elastic contacts and the alignment grooves ensures the stability of power level switching, avoiding contact problems.

[0007] In a preferred embodiment, this invention can be further configured such that: a plurality of the electrodes are evenly arranged on the surface of an insulating plate and electrically connected to the output terminal of the power supply of the welding machine body; the electrode ring is electrically connected to the welding gun end; and different electrical power outputs are achieved through contact electrical connections between the spring plate and different electrodes. This arrangement allows for flexible adjustment of the welding machine's output power to adapt to different welding needs, and effectively prevents overheating during power adjustment, thereby improving the safety and accuracy of welding machine operation.

[0008] In a preferred embodiment, this invention can be further configured such that an expansion medium, one of alcohol, liquid mercury, or kerosene, is added to the inner side of each of the hydraulic holes. Through the action of the expansion medium, it can respond more sensitively to temperature changes, thereby adjusting the welding machine's operating state in a timely manner and preventing damage to the welding machine due to overheating.

[0009] In a preferred embodiment, this invention can be further configured such that the hydraulic hole and piston rod are arranged vertically and parallel to the top rod, the surface of the spiral rod is provided with a spiral ridge, and the inner side of the spiral sleeve rod is provided with a spiral groove that matches the spiral ridge. This structure, through the mutual cooperation of the spiral ridge and spiral groove, achieves stable transmission of the welding machine's temperature control components, further improving the welding machine's heat dissipation performance and equipment stability.

[0010] In a preferred embodiment, this invention can be further configured such that the temperature-sensing liquid cylinder is a metal component with a heat-conducting layer on its bottom surface, the heat-conducting layer being attached to the surface of the welding machine's main power module. This design, through the heat-conducting layer, allows heat from the surface of the welding machine's main power module to be rapidly transferred to the temperature-sensing liquid cylinder, accelerating the heat dissipation process and thus achieving temperature control and protection of the welding machine.

[0011] The beneficial effects achieved by this utility model are as follows:

[0012] 1. In this utility model, by setting a combination of a knob adjustment device and a temperature sensing driver, automatic power adjustment can be achieved when the welding machine overheats. The mechanical adjustment allows for multi-level power adjustment as the temperature rises, gradually reducing the output power level and providing overheat protection, thereby effectively extending the service life of the welding machine and increasing the stability and safety of the equipment.

[0013] 2. In this utility model, through the linkage design of the temperature-sensing liquid cylinder and the piston plate, the power output can be automatically adjusted when the welding machine temperature rises, maintaining the accuracy of temperature control, realizing intelligent protection, and effectively preventing equipment damage caused by overheating. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of one embodiment of the present utility model;

[0015] Figure 2 This is a schematic diagram of the power adjustment knob and temperature sensing driver structure according to one embodiment of the present invention;

[0016] Figure 3 This is a schematic diagram of the mounting structure of the power adjustment knob and temperature sensing driver according to one embodiment of the present invention;

[0017] Figure 4 This is an exploded view of the power adjustment knob according to one embodiment of the present invention;

[0018] Figure 5 This is an exploded view of the temperature-sensing actuator according to an embodiment of the present invention.

[0019] Figure label:

[0020] 100. Welding machine body; 200. Power adjustment knob; 210. Knob seat; 220. Rotary shaft rod; 230. Knob; 221. Spring plate; 222. Electrode ring; 231. Indexing cover; 232. Insulating plate; 233. Electrode connector; 300. Temperature sensing actuator; 310. Temperature sensing cylinder; 320. Piston plate; 330. Top rod; 311. Hydraulic hole; 321. Piston rod; 331. Helical rod; 340. Rotary sleeve rod. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0022] It should be understood that these descriptions are merely exemplary and not intended to limit the scope of this invention.

[0023] The following is in conjunction with the appendix Figures 1-5 This invention describes an overheat protection dual-pulse gas shielded welding machine provided by some embodiments of the present invention. Example 1

[0024] In one embodiment of this utility model, an overheat protection dual-pulse gas shielded welding machine is provided, comprising: a welding machine body 100, a power adjustment knob 200, and a temperature sensor driver 300. The power adjustment knob 200 is installed at the output end of the welding machine body 100 and is used to adjust the output power of the welding machine body 100. The bottom end of the temperature sensor driver 300 is fixed to the surface of the power module of the welding machine body 100 by adhesive bonding to facilitate temperature conduction and heat dissipation.

[0025] The power adjustment knob 200 includes a knob base 210, a rotating shaft 220, and a knob 230 fixed to the top of the rotating shaft 220. A graduated cover 231 and an insulating plate 232 are fixedly mounted on the surface of the knob base 210, and a plurality of electrodes 233 are evenly arranged on the surface of the insulating plate 232. A spring plate 221 and an electrode ring 222 are fixedly sleeved on the surface of the rotating shaft 220, located inside the knob base 210. The electrode ring 222 is used to sequentially connect with each electrode 233 when the rotating shaft 220 rotates, thereby adjusting different power levels. The rotating shaft 220 is rotatably sleeved inside the knob base 210 and located at the axis of the spring plate 221 and the insulating plate 232.

[0026] The temperature-sensing actuator 300 includes a temperature-sensing liquid cylinder 310, a piston plate 320, and a push rod 330, with a rotating sleeve rod 340 rotatably mounted on the top surface of the temperature-sensing liquid cylinder 310. The top end of the rotating sleeve rod 340 is fixedly connected to the bottom end of the rotating shaft rod 220 for adjusting the power in response to temperature changes. The piston plate 320 is slidably mounted inside the temperature-sensing liquid cylinder 310, and its bottom surface is provided with several piston rods 321. The top surface of the temperature-sensing liquid cylinder 310 has several hydraulic holes 311 corresponding to the piston rods 321 to form channels for the flow of the expansion medium. A helical rod 331 is fixedly mounted on the top end of the push rod 330, and the helical rod 331 is movably sleeved inside the rotating sleeve rod 340 for transmitting rotational driving force.

[0027] In this embodiment, the top surface of the spring plate 221 elastically abuts against the bottom surface of the indexing cover 231, and the bottom surface of the indexing cover 231 is provided with an alignment groove corresponding to the electrode 233, ensuring the stability of power level switching. Alcohol is added to the inside of the hydraulic hole 311 as an expansion medium, used to expand and push the piston plate 320 to move when the temperature rises, thereby achieving automatic power adjustment.

[0028] When the welding machine temperature rises, the alcohol expands and pushes the piston plate 320, causing the push rod 330 to drive the rotating sleeve rod 340 to rotate, thereby adjusting the power setting in the power adjustment knob 200, realizing overheat protection and extending the service life of the welding machine. Example 2

[0029] In another embodiment, the structural design of this invention is further optimized. In this embodiment, the electrodes 233 are evenly distributed on the surface of the insulating plate 232 and electrically connected to the power output terminal of the welding machine body 100, while the electrode ring 222 is electrically connected to the welding gun end. With the contact electrical connection between the spring plate 221 and different electrodes 233, different power outputs are achieved to meet the needs of different welding conditions.

[0030] The temperature-sensing liquid cylinder 310 and piston plate 320 are made of metal, and the internal cavity of the temperature-sensing liquid cylinder 310 is designed as a coil-like structure to increase the flow path of the cooling medium and improve heat dissipation efficiency. The surface of the spiral rod 331 is provided with spiral ridges, and the inner side of the rotating sleeve rod 340 is provided with spiral grooves that are adapted to the spiral ridges, so that the rotating sleeve rod 340 can rotate and transmit power stably along the spiral ridges.

[0031] In this embodiment, a heat-conducting layer is provided on the bottom surface of the temperature-sensing liquid cylinder 310. The heat-conducting layer is directly attached to the surface of the power module of the welding machine body 100, thereby accelerating the heat transfer to the temperature-sensing liquid cylinder 310. In addition, the hydraulic hole 311 is filled with liquid mercury as an expansion medium. Utilizing the high thermal expansion characteristics of liquid mercury, it responds quickly when the temperature rises sharply, pushing the piston plate 320 to move, thereby protecting the welding machine from overheating damage.

[0032] This embodiment further improves the cooling effect by optimizing the coil structure and heat-conducting layer design inside the temperature-sensing liquid cylinder 310; by utilizing the expansion characteristics of molten mercury, it can respond rapidly at higher temperatures, ensuring the stability of the welding machine under different temperature environments.

[0033] Working principle and usage process of this utility model:

[0034] The welding machine body 100 is in operation, providing welding current. The power adjustment knob 200 is in the default position, set to normal power output. The welder operates the welding machine according to welding requirements. When the welding machine is working normally, the temperature sensor 300 monitors the welding machine temperature. When the temperature is within a safe range, the power adjustment knob 200 remains at the preset setting and does not require adjustment.

[0035] As welding time increases, the internal temperature of the welding machine gradually rises. When the temperature reaches the set threshold, the expansion medium in the temperature-sensing cylinder 310 expands due to heat, pushing the piston plate 320 upward and rotating the power adjustment knob 200 to reduce power output and decrease heat generation. As the welding machine temperature gradually decreases, the expansion medium cools and contracts, the piston plate 320 returns to its original position, and the power adjustment knob 200 gradually returns to its normal setting, restoring power and allowing the welding machine to continue operating stably. After the welding operation is completed, the welding machine power is turned off, the power adjustment knob 200 resets, and the equipment enters standby mode. Throughout the process, the temperature-sensing actuator 300 performs automatic overheat protection and power adjustment, ensuring that the welding machine operates within a safe temperature range and effectively extending the equipment's lifespan.

[0036] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0037] Although embodiments of the present invention have been shown and described, those skilled in the art will understand 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 claims and their equivalents.

Claims

1. A dual-pulse gas shielded welding machine with overheat protection, characterized in that, include: The welding machine body (100), power adjustment knob (200), and temperature sensor driver (300) are provided. The power adjustment knob (200) is connected to the output end of the welding machine body (100) for adjusting the output power of the welding machine body (100). The bottom end of the temperature sensor driver (300) is glued and fixed to the surface of the power module of the welding machine body (100). The power adjustment knob (200) includes a knob seat (210), a rotating shaft (220), and a knob (230) fixed to the top of the rotating shaft (220). A dividing cover (231) and an insulating plate (232) are fixedly installed on the surface of the knob seat (210), and the surface of the insulating plate (232) is provided with several electrodes (233). A spring plate (221) and an electrode ring (222) located inside the knob seat (210) are fixedly sleeved on the surface of the rotating shaft (220). The electrode ring (222) is used to interact with the rotating shaft during rotation. Each electrode (233) is connected. The rotating shaft (220) is rotatably sleeved on the inner side of the knob seat (210) and located at the axis of the spring plate (221) and the insulating plate (232). The temperature-sensing actuator (300) includes a temperature-sensing liquid cylinder (310), a piston plate (320), a push rod (330), and a rotating sleeve rod (340) rotatably mounted on the top surface of the temperature-sensing liquid cylinder (310). The top end of the rotating sleeve rod (340) is connected to the rotating shaft. The bottom end of (220) is fixedly connected, the piston plate (320) is slidably installed on the inner side of the temperature sensing cylinder (310) and the bottom surface is provided with a number of piston rods (321), the top surface of the temperature sensing cylinder (310) is provided with a number of hydraulic holes (311) corresponding to the piston rods (321), the top end of the top rod (330) is fixedly installed with a spiral rod (331), and the spiral rod (331) is movably sleeved on the inner side of the swivel rod (340).

2. The overheat protection dual-pulse gas shielded welding machine according to claim 1, characterized in that, The top surface of the spring plate (221) is elastically abutted against the bottom surface of the indexing cover (231), and the bottom surface of the indexing cover (231) is provided with alignment grooves that correspond one-to-one with the electrode (233), and the top surface of the spring plate (221) is provided with elastic contacts that fit with the alignment grooves.

3. The overheat protection dual-pulse gas shielded welding machine according to claim 1, characterized in that, Several electrodes (233) are evenly arranged on the surface of the insulating plate (232) and electrically connected to the power output terminal of the welding machine body (100). The electrode ring (222) is electrically connected to the welding gun end. Different electrical power outputs are performed under the contact electrical connection between the spring plate (221) and different electrodes (233).

4. The overheat protection dual-pulse gas shielded welding machine according to claim 1, characterized in that, Each of the hydraulic holes (311) is filled with an expansion medium, which is one of alcohol, mercury or kerosene.

5. The overheat protection dual-pulse gas shielded welding machine according to claim 1, characterized in that, The hydraulic hole (311) and piston rod (321) are arranged vertically and parallel to the top rod (330). The surface of the spiral rod (331) is provided with a spiral ridge, and the inner side of the spiral sleeve rod (340) is provided with a spiral groove that matches the spiral ridge.

6. The overheat protection dual-pulse gas shielded welding machine according to claim 1, characterized in that, The temperature-sensing liquid cylinder (310) is a metal component with a heat-conducting layer on its bottom surface. The heat-conducting layer is attached to the surface of the power module of the welding machine body (100).

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