Automatic idling structure of hair welding machine

Abstract

The utility model relates to the technical field of electric welding machines, and discloses an automatic idling structure of a hair welding machine, which comprises a speed regulating support, a speed regulating handle, a throttle valve and an idling actuating mechanism, the speed regulating support is connected with the throttle valve and the speed regulating handle, and the automatic idling structure is characterized in that a connecting support arm is abutted against the idling actuating mechanism, and the idling actuating mechanism is connected with the connecting support arm. And the idle speed executing mechanism drives the connecting support arm to do reciprocating motion. The problems of flameout of the engine and substandard weld penetration are avoided, and the reliability of speed regulation and idling of the hair welding machine in a high-frequency welding scene is improved.

Description

An automatic idling structure for a welding machine Technical Field

[0001] This utility model relates to the field of welding machine technology, specifically to an automatic idling structure for a welding machine. Background Technology

[0002] A generator welding machine, also known as an engine welding machine, is a machine that integrates an engine and a welding machine. The generator produces current by rotating, directly driving the welding machine to work. The welding machine uses electrical energy to generate a high-temperature electric arc or resistance heat for welding, cutting, or heat treatment of metal materials. Generators are generally available in gasoline-powered and diesel-powered models, and often come with a small auxiliary power supply to power low-power equipment such as lighting.

[0003] A welding machine control system typically consists of three parts: a sensor module, a control unit, and an idle speed actuator. Its core working principle is as follows: the sensor monitors the load status in real time. When welding demand or load changes are detected, the control unit uses a PID algorithm to drive the idle speed actuator to dynamically adjust the engine throttle opening to meet power requirements under different operating conditions. To meet energy-saving requirements, an automatic idle mechanism is usually configured. When the sensor detects no welding load, the idle speed actuator lowers the engine throttle to the idle position, typically achieving energy savings of over 30%.

[0004] Chinese patent document CN111219259B discloses an engine with remote throttle control and manual throttle control, including a throttle assembly 30. The remote control throttle lever 4 of the throttle assembly 30 is connected to a connecting rod 21 and a rotating bracket 22. The rotating bracket 22 can be rotated by a stepper motor, another connecting rod, a solenoid, or other device. A controller can operate the stepper motor or solenoid via a control signal. The rotating bracket 22 can convert rotational motion into movement of the connecting rod 21. The rotating bracket 22 can convert displacement in a first direction into displacement of the connecting rod 21 in a second direction. The throttle assembly 30 may also include a compression spring or a governor spring 10, which can adjust the position of the remote control throttle lever 4 and / or the manual throttle control lever 3 according to the load on the engine 20.

[0005] Chinese patent document CN221628279U discloses an engine idling mechanism, including an engine body and a linear reciprocating device; a speed regulating arm is oscillatingly mounted on the engine body, and the linear reciprocating device is mounted on the outer shell of the engine body. The linear reciprocating device includes a fixed frame and an electric push rod. The fixed frame is mounted on the outer shell of the engine body, and the electric push rod is mounted on the fixed frame. The electric push rod has a push rod capable of pushing the speed regulating arm to oscillate on the engine body.

[0006] The existing technology has the following shortcomings: To meet energy-saving requirements, it is usually achieved by configuring an automatic idling mechanism. When the sensor detects no welding load, the idling actuator lowers the engine throttle to the idle position. However, the existing idling mechanism cannot achieve speed regulation and idling in high-frequency welding scenarios, which can lead to engine stalling and insufficient weld penetration, severely restricting the reliability of equipment in high-frequency welding scenarios. Summary of the Invention

[0007] To address the issues of reduced engine stalling and welding defects in high-frequency welding scenarios, this utility model provides an automatic idling structure for a welding machine, comprising a speed control bracket, a speed control lever, a throttle valve, and an idling actuator. The speed control bracket is connected to the throttle valve and the speed control lever. The connecting arm abuts against the idling actuator, and the idling actuator drives the connecting arm to reciprocate.

[0008] Preferably, the idling actuator is unidirectionally driven connected to the connecting arm.

[0009] Furthermore, in order to simplify the structure and improve the engine response speed, the idle speed actuator includes an idle speed device, a reciprocating rod and a lever, the connecting arm abutting against the lever, the reciprocating rod driving the lever to reciprocate, and the lever driving the connecting arm to reciprocate.

[0010] To improve space utilization and reduce the load on the idling actuator, the connecting arm extends along the side away from the throttle valve.

[0011] To facilitate speed adjustment, the lever is adjustablely fixed to the reciprocating rod.

[0012] To simplify the structure and reduce the overall size, the idle speed actuator is located in the circumferential direction of the speed control handle.

[0013] Preferably, the idle speed actuator is located on the side of the speed control bracket opposite to the throttle valve.

[0014] To facilitate the transmission of kinetic energy by the engine, the speed control lever passes through the engine body and is rotatably mounted on the engine body, and the speed control lever abuts against the centrifugal speed control cap that is connected to the engine drive.

[0015] To facilitate the reciprocating motion of the speed regulating bracket and balance the centrifugal force of the centrifugal speed regulating cap, an elastic element is provided on the side of the speed regulating bracket opposite to the connecting arm.

[0016] To automatically control idling and normal operation, a load detection unit and a control unit are also included. The control unit is electrically connected to the load detection unit and the idling actuator, respectively. When the load detection unit detects no load within a preset time, the control unit controls the idling actuator to drive the connecting arm and link the throttle valve to the idling position. When the load detection unit detects a load, the control unit controls the idling actuator to immediately release the connecting arm.

[0017] This utility model has the following beneficial effects:

[0018] 1. This utility model improves the response speed of engine speed regulation and idling speed by connecting the support arm and the idling speed actuator through a hard connection. Once the welding requirement is identified, the throttle response is completed within 0.5 seconds. It is suitable for dynamic working conditions such as intermittent welding and pulse welding, avoiding the problems of engine stalling and insufficient weld penetration. It improves the equipment reliability in high-frequency welding scenarios and effectively solves the stability problem under dynamic working conditions.

[0019] 2. The structure is simple and reliable with a low failure rate. The design of the connecting arm extending in the direction away from the throttle valve makes full use of the internal space of the engine, reduces the overall volume, and facilitates integrated installation. Attached Figure Description

[0020] Figure 1 is a schematic diagram of an embodiment of the automatic idling speed structure of the welding machine of this utility model;

[0021] Figure 2 is a schematic diagram of the automatic idling speed structure of the welding machine according to the present invention on the welding machine;

[0022] Figure 3 is a schematic diagram of the inside of the welding machine. Detailed Implementation

[0023] The following detailed description illustrates the specific implementation method:

[0024] The reference numerals in the accompanying drawings include: speed control bracket 1, connecting arm 101, speed control lever 2, throttle valve 3, idle speed actuator 4, idle speed device 401, reciprocating rod 402, shift block 403, pull rod 5, oil-air mixing device 6, centrifugal speed control cap 7, tension spring 8, engine block 9, engine 10.

[0025] Example 1

[0026] As shown in Figures 1-3, an automatic idling structure for a welding machine includes a speed control bracket 1, a speed control lever 2, a throttle valve 3, and an idling actuator 4. The end of the speed control bracket 1 is connected to the throttle valve 3 via a pull rod 5. The throttle valve 3 is connected to an air-fuel mixing device 6. The other end of the speed control bracket 1 is connected to the speed control lever 2. The speed control lever 2 is used to connect to an engine 10. A connecting arm 101 is provided in the upper middle part of the speed control bracket 1. The connecting arm 101 abuts against the idling actuator 4. The idling actuator 4 drives the connecting arm 101 to reciprocate.

[0027] The idle speed actuator 4 is unidirectionally driven by the connecting arm 101. The idle speed actuator 4 drives the speed regulating bracket 1 and drives the throttle valve 3 of the oil-air mixing device 6 to the idle position.

[0028] The idle speed actuator 4 (electrically controlled reciprocating motion device) includes an idle speed device 401, a reciprocating rod 402, and a shift block 403. The end of the connecting arm 101 abuts against the upper surface of the shift block 403. The reciprocating rod 402 drives the shift block 403 to reciprocate, and the shift block 403 drives the connecting arm 101 to reciprocate. Since the connecting arm 101 abuts against the shift block 403, the connecting arm 101 has a certain amount of free movement. When the idle speed actuator 4 is in the released state, the connecting arm 101 does not form a "connection" and is in a free state, which can improve its movement flexibility without losing its rapid response capability.

[0029] The connecting arm 101 extends along the side opposite to the throttle valve 3.

[0030] The lever 403 is threaded onto the reciprocating rod 402; when a high idle speed is required, the lever 403 is turned closer to the idle speed device 401; when a low idle speed is required, the lever 403 is turned further away from the idle speed device 401.

[0031] The idle speed actuator 4 is located in the circumferential direction of the speed control handle 2.

[0032] The idle speed actuator 4 is located on the side of the speed control bracket 1 opposite to the throttle valve 3.

[0033] A centrifugal speed control cap 7 driven and connected to the engine is provided inside the engine 10. A speed control handle 2 is provided on the centrifugal speed control cap 7 and abuts against it. The speed control handle 2 passes through the engine body 10 and is rotatably mounted on the engine body 10. The speed control handle 2 passes through the engine body 10 and abuts against the centrifugal speed control cap 7 inside the engine 10.

[0034] A tension spring 8 is provided on the side of the speed control bracket 1 away from the connecting arm 101. One end of the tension spring 8 is connected to the engine block 9. After the idle speed actuator 4 releases the connecting arm 101, the tension spring 8 applies a force to the speed control bracket 1 in the direction of the throttle valve 3 to achieve reset.

[0035] It also includes a load detection unit (not shown in the figure) and a control unit (not shown in the figure), the control unit being electrically connected to the load detection unit and the idle speed actuator 4 respectively; when the load detection unit detects no load, after 15 seconds the control unit controls the idle speed actuator 4 to drive the connecting support arm 101 and link the throttle valve 3 of the oil-air mixing device 6 to the idle position; when the load detection unit detects a load, the control unit controls the idle speed actuator 4 to immediately release the connecting support arm 101.

[0036] In this embodiment, the detection unit and control unit can be purchased directly. The centrifugal speed control cap 7 and the oil-gas mixing device 6 in the engine 10 are existing technologies, so they will not be described in detail.

[0037] The above descriptions are merely embodiments of this utility model. Commonly known structures and characteristics are not described in detail here. Those skilled in the art are aware of all common technical knowledge in the field prior to the application date or priority date, are knowledgeable of all existing technologies in that field, and possess the ability to apply conventional experimental methods prior to that date. Therefore, those skilled in the art can, based on the guidance provided in this application, improve and implement this solution in conjunction with their own capabilities. Typical known structures or methods should not be obstacles for those skilled in the art to implement this application. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. An automatic idling structure for a welding machine, comprising a speed regulating bracket, a speed regulating lever, a throttle valve, and an idling actuator, wherein the speed regulating bracket is connected to the throttle valve, and the speed regulating bracket is connected to the speed regulating lever, characterized in that, The speed regulating bracket is provided with a connecting arm, which abuts against the idle speed actuator, and the idle speed actuator drives the connecting arm to reciprocate.

2. The automatic idle structure of the soldering machine according to claim 1, characterized in that: The idling actuator is unidirectionally driven by the connecting arm.

3. The automatic idling structure of the welding machine according to claim 2, characterized in that: The idling actuator includes an idling device, a reciprocating lever, and a shift block. The connecting arm abuts against the shift block, and the reciprocating lever drives the shift block to reciprocate while the shift block drives the connecting arm to reciprocate.

4. The automatic idling structure of the welding machine according to claim 3, characterized in that: The connecting arm extends along the side opposite to the throttle valve.

5. The automatic idling structure of the welding machine according to claim 3 or 4, characterized in that: The lever is adjustablely fixed to the reciprocating rod.

6. The automatic idling structure of the welding machine according to claim 5, characterized in that: The idle speed actuator is located in the circumferential direction of the speed control handle.

7. The automatic idling structure of the welding machine according to claim 6, characterized in that: The idle speed actuator is located on the side of the speed control bracket opposite to the throttle valve.

8. The automatic idling structure of the welding machine according to claim 7, characterized in that: The speed control lever passes through the engine body and is rotatably mounted on the engine body. The speed control lever abuts against a centrifugal speed control cap that is connected to the engine drive.

9. The automatic idling structure for a welding machine according to any one of claims 6-8, characterized in that: An elastic element is provided on the side of the speed regulating bracket opposite to the connecting arm.

10. The automatic idling structure of the welding machine according to claim 9, characterized in that: It also includes a load detection unit and a control unit, the control unit being electrically connected to the load detection unit and the idle speed actuator respectively; when the load detection unit detects no load within a preset time, the control unit controls the idle speed actuator to drive the connecting arm and link the throttle valve to the idle position; when the load detection unit detects a load, the control unit controls the idle speed actuator to immediately release the connecting arm.

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