Welding wire force adjustment device and adjustment method

Abstract

This application provides a welding wire force adjustment device and method. The device includes: a first outer tube, a control component, and a second outer tube, which are sequentially fixed between a wire drawing motor and a wire pushing motor. The first inner tube is tightly fitted around the welding wire and includes a first fixed end that is flexibly fitted inside the first outer tube and fixedly connected to the wire drawing motor, and a first sliding end that can pass through the first outer tube. The second inner tube is tightly fitted around the welding wire and includes a second fixed end that is flexibly fitted inside the second outer tube and fixedly connected to the wire pushing motor, and a second sliding end that can pass through the second outer tube. The first sliding end and the second sliding end slide closer to or further away from each other within the control component as the force on the welding wire changes. The control component is used to control the wire drawing motor to operate at a constant first preset speed. The speed of the wire pushing motor is adjusted according to the sliding change of the first sliding end and the second sliding end, so that the welding wire is subjected to free force, that is, neither too loose nor too tight, and there will be no problem of wire piling or wire blockage, thus improving applicability.

Description

Technical Field

[0001] This application relates to the field of welding technology, and in particular to a welding wire force adjustment device and adjustment method. Background Technology

[0002] With the improvement of welding technology, the requirements for wire feeding stability control have also increased. In particular, with the rise of the new energy industry, electric vehicles, energy storage, templates and other fields need to introduce a large amount of aluminum welding. However, in the aluminum welding process, because the aluminum welding wire (such as aluminum-silicon alloy welding wire) is very soft, the frictional resistance of sliding wire feeding in the wire feeding tube is large. In addition, wear inside the wire feeding tube will also increase the resistance, and the roughness of the welding wire surface will also increase the resistance, making it difficult to achieve stable wire feeding output.

[0003] To improve the stability of wire feed in aluminum welding, a dual welding system is introduced. In this system, the wire drawing motor is typically a high-response-speed motor, while the wire pushing motor is typically a low-response-speed motor, ideally improving wire feed stability. However, in actual use, the difference in response speed between the wire drawing and pushing motors means the welding wire is often under stress, preventing stable wire feed. This can still lead to problems like arc ignition tying or wire blockage in aluminum welding.

[0004] Therefore, in the aluminum welding process, how to adjust the force on the welding wire so that the welding wire is in a free state of force, thereby ensuring the stable output of the welding wire, has become a technical problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] To address the issue of adjusting the force on the welding wire during aluminum welding to ensure a stable output of the welding wire under free stress, this application provides a welding wire force adjustment device and method.

[0006] In a first aspect, embodiments of this application provide a welding wire force adjustment device, which includes: a first outer tube, a second outer tube, a first inner tube, a second inner tube, and a control component; the first outer tube, the control component, and the second outer tube are sequentially fixed between a wire drawing motor and a wire pushing motor; the first inner tube is tightly fitted around the welding wire and includes a first fixed end that is flexibly fitted inside the first outer tube and fixedly connected to the wire drawing motor, and a first sliding end that can extend out of the first outer tube; the second inner tube is tightly fitted around the welding wire and includes a second fixed end that is flexibly fitted inside the second outer tube and fixedly connected to the wire pushing motor, and a second sliding end that can extend out of the second outer tube; the first sliding end and the second sliding end slide closer or further away from each other within the control component as the force on the welding wire changes; the control component is used to: control the wire drawing motor to operate at a constant first preset speed; determine the sliding change of the first sliding end and the second sliding end; and adjust the speed of the wire pushing motor based on the sliding change to allow the welding wire to be freely stressed.

[0007] In one possible implementation, the control component includes: a third outer tube, a first position sensor, a second position sensor, and a first controller; the third outer tube is fixed between the first outer tube and the second outer tube; the first position sensor is fixed to the end of the first sliding end and slides in the third outer tube together with the first sliding end as the force on the welding wire changes; the second position sensor is fixed to the end of the second sliding end and slides in the third outer tube together with the second sliding end as the force on the welding wire changes; the control component is used to determine the amount of sliding change of the first sliding end and the second sliding end, specifically by performing the following operations through the first controller: acquiring a first position detected by the first position sensor and a second position detected by the second position sensor; determining the actual distance between the first sliding end and the second sliding end based on the first position and the second position; determining the distance difference between the actual distance and a preset standard distance; the preset standard distance is the distance between the first sliding end and the second sliding end when the welding wire is under free force; and determining the distance difference as the amount of sliding change.

[0008] In one possible implementation, the control component includes: a fourth outer tube, a first conductive tip, a second conductive tip, and a second controller; the fourth outer tube is fixed between the first outer tube and the second outer tube; the first conductive tip is fixed to the end of the first sliding end and is in electrical contact with the welding wire, sliding together with the first sliding end in the fourth outer tube as the force on the welding wire changes; the second conductive tip is fixed to the end of the second sliding end and is in electrical contact with the welding wire, sliding together with the second sliding end in the fourth outer tube as the force on the welding wire changes; the control component is used to determine the amount of sliding change of the first sliding end and the second sliding end, specifically by performing the following operations through the second controller: acquiring a first voltage detected by the first conductive tip and a second voltage detected by the second conductive tip; determining the actual voltage between the first sliding end and the second sliding end based on the first voltage and the second voltage; determining the voltage difference between the actual voltage and a preset standard voltage; the preset standard voltage is the voltage between the first sliding end and the second sliding end when the welding wire is under free force; and determining the voltage difference as the amount of sliding change.

[0009] In one possible implementation, the control component includes: a tension spring, a first pressure sensor, a second pressure sensor, and a third controller; the tension spring is fixedly connected between the first sliding end and the second sliding end; the first pressure sensor is fixed to the end of the first sliding end, and together with the first sliding end, stretches or compresses the tension spring as the force on the welding wire changes; the second pressure sensor is fixed to the end of the second sliding end, and together with the second sliding end, stretches or compresses the tension spring as the force on the welding wire changes; the control component is used to determine the amount of sliding change of the first sliding end and the second sliding end, specifically by performing the following operations through the third controller: acquiring the first pressure detected by the first pressure sensor and the second pressure detected by the second pressure sensor; determining the actual force between the first sliding end and the second sliding end based on the first pressure and the second pressure; determining the force difference between the actual force and the preset standard force; the preset standard force is the force between the first sliding end and the second sliding end when the welding wire is under free force; and determining the force difference as the amount of sliding change.

[0010] In one possible implementation, the device further includes: a first limiting component and a second limiting component fixedly disposed within the control component; the first limiting component is disposed on the sliding path of the first sliding end and is used to limit the farthest position of the first sliding end sliding towards the wire drawing motor; the second limiting component is disposed on the sliding path of the second sliding end and is used to limit the farthest position of the second sliding end sliding towards the wire pushing motor.

[0011] Secondly, embodiments of this application also provide a method for adjusting the force on a welding wire. This method is applied to the welding wire force adjustment device described in the first aspect. The method includes: controlling the wire drawing motor to operate at a constant speed of a first preset speed through the control component; determining the sliding change of the first sliding end and the second sliding end through the control component; and adjusting the speed of the wire pushing motor based on the sliding change through the control component, so that the welding wire is free to be subjected to force.

[0012] In one possible implementation, the control component includes: a third outer tube, a first position sensor, a second position sensor, and a first controller; the third outer tube is fixed between the first outer tube and the second outer tube; the first position sensor is fixed to the end of the first sliding end and slides in the third outer tube together with the first sliding end as the force on the welding wire changes; the second position sensor is fixed to the end of the second sliding end and slides in the third outer tube together with the second sliding end as the force on the welding wire changes; determining the sliding change of the first and second sliding ends by the control component includes: acquiring a first position detected by the first position sensor and a second position detected by the second position sensor through the first controller; determining the actual distance between the first and second sliding ends based on the first and second positions through the first controller; determining the distance difference between the actual distance and a preset standard distance through the first controller; the preset standard distance is the distance between the first and second sliding ends when the welding wire is under free force; and determining the distance difference as the sliding change through the first controller.

[0013] In one possible implementation, the control component includes: a fourth outer tube, a first conductive tip, a second conductive tip, and a second controller; the fourth outer tube is fixed between the first outer tube and the second outer tube; the first conductive tip is fixed to the end of the first sliding end and is in electrical contact with the welding wire, sliding together with the first sliding end in the fourth outer tube as the force on the welding wire changes; the second conductive tip is fixed to the end of the second sliding end and is in electrical contact with the welding wire, sliding together with the second sliding end in the fourth outer tube as the force on the welding wire changes; determining the sliding change of the first and second sliding ends by the control component includes: acquiring a first voltage detected by the first conductive tip and a second voltage detected by the second conductive tip through the second controller; determining the actual voltage between the first and second sliding ends based on the first and second voltages through the second controller; determining the voltage difference between the actual voltage and a preset standard voltage through the second controller; the preset standard voltage is the voltage between the first and second sliding ends when the welding wire is under free force; and determining the voltage difference as the sliding change through the second controller.

[0014] In one possible implementation, the control component includes: a tension spring, a first pressure sensor, a second pressure sensor, and a third controller; the tension spring is fixedly connected between the first sliding end and the second sliding end; the first pressure sensor is fixed to the end of the first sliding end, and together with the first sliding end, stretches or compresses the tension spring as the force on the welding wire changes; the second pressure sensor is fixed to the end of the second sliding end, and together with the second sliding end, stretches or compresses the tension spring as the force on the welding wire changes; determining the sliding change of the first and second sliding ends through the control component includes: acquiring a first pressure detected by the first pressure sensor and a second pressure detected by the second pressure sensor through the third controller; determining the actual force between the first and second sliding ends based on the first and second pressures through the third controller; determining the force difference between the actual force and a preset standard force through the third controller; the preset standard force is the force between the first and second sliding ends when the welding wire is under free force; and determining the force difference as the sliding change through the third controller.

[0015] In one possible implementation, controlling the wire drawing motor to operate at a constant first preset speed via the control component includes: obtaining the actual speed of the wire drawing motor via the control component; determining the speed difference between the actual speed and the first preset speed via the control component; and adjusting the current speed of the wire drawing motor based on the speed difference via the control component, so that the wire drawing motor operates at a constant first preset speed.

[0016] Thirdly, embodiments of this application also provide a computer device, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to implement the welding wire force adjustment method described in the second aspect.

[0017] Fourthly, embodiments of this application also provide a computer-readable storage medium storing a computer program for performing the welding wire force adjustment method described in the second aspect.

[0018] This application provides a welding wire force adjustment device and method. Through this device and method, the wire drawing motor can be controlled to operate at a constant first preset speed, and the welding wire can be output stably. At the same time, the speed of the wire pushing motor can be adjusted according to the force change of the welding wire, so that the welding wire is in a free state of force, that is, neither loose nor tight, and there will be no problem of wire piling or blocking. It can meet the needs of aluminum welding scenarios and has better applicability. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of a gas metal arc shielded welding system provided in an embodiment of this application.

[0021] Figure 2 This is a schematic diagram of an application scenario provided by an embodiment of this application.

[0022] Figure 3 This is a schematic diagram illustrating another application scenario provided by an embodiment of this application.

[0023] Figure 4 This is a schematic diagram of another gas metal arc shielded welding system provided in an embodiment of this application.

[0024] Figure 5This is a schematic diagram of another gas metal arc shielded welding system provided in an embodiment of this application.

[0025] Figure 6A This is a schematic diagram of a welding wire force adjustment device provided in an embodiment of this application.

[0026] Figure 6B This is a schematic diagram illustrating another application scenario provided by an embodiment of this application.

[0027] Figure 7A This is a schematic diagram of another welding wire force adjustment device provided in an embodiment of this application.

[0028] Figure 7B This is a schematic diagram illustrating another application scenario provided by an embodiment of this application.

[0029] Figure 8 This is a schematic diagram of another welding wire force adjustment device provided in an embodiment of this application.

[0030] Figure 9 This is a schematic diagram of another welding wire force adjustment device provided in an embodiment of this application.

[0031] Figure 10 This is a flowchart illustrating a method for adjusting the force on a welding wire, as provided in an embodiment of this application.

[0032] Figure 11 This is a schematic diagram illustrating another application scenario provided by an embodiment of this application. Detailed Implementation

[0033] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. Through these descriptions, the features and advantages of the present application will become clearer and more apparent.

[0034] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments. Although various aspects of embodiments are shown in the accompanying drawings, the drawings are not necessarily drawn to scale unless specifically indicated otherwise.

[0035] Furthermore, the technical features involved in the different embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0036] See Figure 1 , Figure 1 A schematic diagram of a gas metal arc shielded welding system is shown. Figure 1As shown, the gas metal arc welding system 100 may include: a power supply component 101, a wire feed component 102, a welding torch component 103, and a welding wire 104. The power supply component 101 typically meets constant voltage characteristics, providing a constant voltage output to the gas metal arc welding system 100. The wire feed component 102 feeds the welding wire 104 to the welding torch component 103. The wire feed component 102 is typically controlled at a constant speed (or constant speed, constant, or stable), meaning it operates at a constant speed to achieve stable wire feeding. The welding torch component 103 feeds the welding wire 104 to the base material 105 for welding.

[0037] With the improvement of welding technology, the requirements for wire feeding stability control have also increased. Especially with the rise of the new energy industry, electric vehicles, energy storage, and formwork require the introduction of large amounts of aluminum welding. During aluminum welding, aluminum is easily oxidized in air to form aluminum oxide, which has a very high melting point and poor electrical conductivity. Therefore, in aluminum welding processes, such as arc-ignition processes, the wire feeding must be stopped immediately when the welding wire 104 contacts the base material 105. This allows the end of the welding wire 104 to fully contact the base material 105, generating an electric arc 106, thereby improving the success rate of arc ignition and reducing the occurrence of arc-ignition wire tangling.

[0038] Combination Figure 2 It is known that only when the wire feeding speed is controlled to an ideal level can the speed of the end of the welding wire 104 be immediately reduced from high speed to zero when it contacts the base material 105, thus stopping the wire feeding. However, in practical applications, because the welding wire 104 travels in a curved path inside the welding torch component 103, and the length of the welding torch component 103 is usually greater than 3 meters, when the wire feeding component 102 stops feeding the wire, the actual speed of the end of the welding wire 104 cannot immediately drop from high speed to zero. That is, the end of the welding wire 104 will not stop outputting immediately, but will need to wait for a period of time before stopping outputting, resulting in unsatisfactory wire output control and the inability to achieve the ideal state of arc ignition.

[0039] For example, in another arc-starting process, because aluminum has excellent thermal conductivity, and aluminum profiles are prone to defects such as welding cracks when overheated, strict control of heat input is required during aluminum welding. In this application scenario, the wire feeding component 102 needs to be controlled to switch between high-speed and low-speed operation according to a set switching frequency. Figure 3As shown, under ideal wire feeding speed control, high-speed and low-speed operation can be switched immediately. However, in practical applications, because the welding wire 104 moves in a curved motion within the welding torch component 103, and the length of the welding torch component 103 is greater than 3 meters, when the wire feeding component 102 switches from high speed to low speed, or from low speed to high speed, the actual speed at the end of the welding wire 104 cannot immediately switch in the same way as the wire feeding component 102. In particular, when the frequency of the wire feeding component 102 switching between high-speed and low-speed operation is higher than 10 Hz, the actual welding state cannot reach the set ideal state, resulting in unsatisfactory wire control, failing to meet the requirements of heat input control, and thus failing to achieve a good welding effect.

[0040] To address the aforementioned issues, one alternative implementation integrates the welding torch component with the wire feeding component. For example, see... Figure 4 , Figure 4 A schematic diagram of another gas metal arc shielded welding system is shown. Figure 4 As shown, the gas metal arc welding system 400 may include: a power supply component 401, a wire spool 402, a wire feed tube 403, a welding wire 404, a welding torch component, and a wire feeding integrated component 405 that integrates the wire feeding component. The power supply component 401 is used to output a constant voltage to the gas metal arc welding system 400. The wire feeding integrated component 405 is used to feed the welding wire 404 from the wire spool 402 along the wire feed tube 403 to the base material 406, generate an arc 407, and then weld the base material 406.

[0041] In the aforementioned gas metal arc welding system 400, the wire feeding integrated component 405, used to control the wire feeding speed, is positioned near the end of the welding wire 404, making it easy to achieve ideal control. However, in this configuration, the welding torch component has a relatively complex structure, and the wire spool 402 is far from the welding torch component, resulting in still significant wire feeding resistance and unsatisfactory wire feeding control. To improve the wire feeding effect, another optional implementation involves changing the wire feeding path in the wire feeding tube 403 from a sliding friction path to a rolling friction path. This reduces wire feeding resistance; however, rolling friction path wire feeding tubes are more expensive and wire threading is more difficult, especially over long distances, making wire feeding control still insufficient for practical applications.

[0042] Therefore, in another alternative implementation, two wire feeding components are introduced. See also Figure 5 , Figure 5 A schematic diagram of another gas metal arc shielded welding system is shown. Figure 5As shown, the gas metal arc welding system 500 may include: a power supply component 501, a wire spool 502, a wire pusher component 503, a wire feed tube 504, a welding wire 505, a wire drawing integrated component 506 that integrates the welding torch component and the wire drawing component, and a conductive nozzle 507.

[0043] The power supply component 501 provides a constant voltage to the gas metal arc welding system 500. The wire feeder 503 feeds the welding wire 505 from the wire spool 502 along the wire feed tube 504 to the wire drawing assembly 506. The wire drawing assembly 506 outputs the welding wire 505 from the contact nozzle 507 to the base material 509, generates an arc 508, and then welds the base material 509.

[0044] In the gas metal arc welding system 500, the wire pusher 503 is a high-power, low-response-speed motor, while the wire drawing component in the integrated wire drawing component 506 is a low-power, high-response-speed motor. Theoretically, this should achieve high-speed response characteristics at the end of the welding wire 505. However, in practical applications, due to the difference in response speed between the wire pusher 503 and the wire drawing component, the welding wire 505 is under stress, and stable output of the welding wire 505 cannot be achieved.

[0045] In particular, in the aforementioned arc-starting process for aluminum welding, the wire-drawing component responds quickly, and the wire tip stops outputting relatively quickly. However, the wire-pushing component 503 responds slowly and cannot quickly stop feeding the wire, causing the wire 505 in the wire feeding tube 504 to be under stress. If this continues, it will accumulate at position 1, resulting in wire blockage. For another example, in the aforementioned arc-starting process requiring controlled heat input, when the wire-drawing component switches from low-speed to high-speed operation, the wire-drawing component responds quickly, but the wire-pushing component 503 responds slowly, failing to feed the wire at high speed in time. This causes the wire-drawing component to slip, affecting the arc 508 and potentially damaging the contact tip 507. Alternatively, when the wire-drawing component switches from high-speed to low-speed operation, the wire-drawing component responds quickly, but the wire-pushing component 503 responds slowly, failing to feed the wire 505 in time. This causes the wire 505 to be under stress within the wire tube 504, leading to wire blockage at position 1.

[0046] It is evident that current aluminum welding processes cannot solve the problem of welding wire stress, resulting in unstable welding wire output, which in turn fails to meet actual welding requirements and leads to low welding efficiency.

[0047] To address the aforementioned problems, this application provides a welding wire force adjustment device and method. This device and method can be applied to welding systems. Through this device and method, the wire drawing motor (or wire drawing component) can be controlled to operate at a constant first preset speed, ensuring stable welding wire output. Simultaneously, the speed of the wire pushing motor (or wire pushing component) can be adjusted according to changes in the welding wire's force, ensuring the welding wire is in a free-flowing state—neither too loose nor too tight—preventing wire accumulation or blockage. This meets the needs of aluminum welding scenarios and offers better applicability.

[0048] The embodiments provided in this application will now be described in detail with reference to the accompanying drawings.

[0049] See Figure 6A , Figure 6A This is a schematic diagram of a welding wire force adjustment device provided in an embodiment of this application. This welding wire force adjustment device can be applied to a welding system. Figure 6A As shown, the welding wire force adjustment device 600 may include: a first outer tube 601, a second outer tube 602, a first inner tube 603, a second inner tube 604, and a control component 605.

[0050] The first outer tube 601, the control component 605, and the second outer tube 602 are sequentially fixed between the drawing motor 606 and the pushing motor 607. Optionally, one end of the first outer tube 601 is fixedly connected to the drawing motor 606, and the other end is fixedly connected to the control component 605. One end of the second outer tube 602 is fixedly connected to the pushing motor 607, and the other end is fixedly connected to the control component 605. That is, one end of the control component 605 is fixedly connected to the first outer tube 601, and the other end is fixedly connected to the second outer tube 602.

[0051] The wire pusher motor 607 can be used to pull the welding wire 608 from the welding wire spool (not shown in the figure) of the welding system, and then feed it sequentially along the second outer tube 602, the control component 605, and the first outer tube 601 to the wire drawer motor 606. Then, the wire drawer motor 606 can continue to feed the welding wire 608 to the outside of the welding torch (not shown in the figure) of the welding system for welding.

[0052] The first inner tube 603 is tightly fitted around the outside of the welding wire 608 and can move together with the welding wire 608. The welding wire 608 does not undergo curved movement within the first inner tube 603. However, when the welding wire 608 undergoes curved movement, it can drive the first inner tube 603 to also undergo curved movement. Optionally, the outer diameter of the welding wire 608 and the inner diameter of the first inner tube 603 can differ by 0.5-0.8 mm. For example, when the outer diameter of the welding wire 608 is 1.0 mm, the inner diameter of the first inner tube 603 can be 1.5 mm. As another example, when the outer diameter of the welding wire 608 is 1.2 mm, the inner diameter of the first inner tube 603 can be 2.0 mm.

[0053] The first inner tube 603 may include a first fixed end 6031 and a first sliding end 6032. The first fixed end 6031 is flexibly fitted into the first outer tube 601. That is, the first fixed end 6031 of the first inner tube 603 can be in a straightened or bent state within the first outer tube 601. When the welding wire 608 moves in a curved path within the first outer tube 601, the first fixed end 6031 can move along with the welding wire 608 in a curved path within the first outer tube 601. Furthermore, the end of the first fixed end 6031 is fixedly connected to the wire drawing motor 606. The first sliding end 6032 of the first inner tube 603 can extend out of the first outer tube 601 and slide in or out of the control component 605. When the first sliding end 6032 slides in or out of the control component 605, it does not produce a curved path; it can be considered that the first sliding end 6032 slides in or out of the control component 605 in a straight line.

[0054] A gap exists between the outer surface of the first inner tube 603 and the inner surface of the first outer tube 601, ensuring that the first inner tube 603 can move in a curved path within the first outer tube 601 without bending indefinitely. In other words, the first outer tube 601 provides space for the first inner tube 603 to move in a curved path while limiting the degree of bending of the first inner tube 603. Optionally, the outer diameter of the first inner tube 603 and the inner diameter of the first outer tube 601 can differ by 3-5 mm.

[0055] The second inner tube 604 is tightly fitted around the outside of the welding wire 608 and can move together with it. The welding wire 608 does not undergo curved movement within the second inner tube 604. However, when the welding wire 608 does undergo curved movement, it can cause the second inner tube 604 to move in a curved path as well. Optionally, the outer diameter of the welding wire 608 and the inner diameter of the second inner tube 604 can differ by 0.5-0.8 mm. For example, when the outer diameter of the welding wire 608 is 1.0 mm, the inner diameter of the second inner tube 604 can be 1.5 mm. As another example, when the outer diameter of the welding wire 608 is 1.2 mm, the inner diameter of the second inner tube 604 can be 2.0 mm.

[0056] The second inner tube 604 may include a second fixed end 6041 and a second sliding end 6042. The second fixed end 6041 is flexibly fitted into the second outer tube 602. That is, the second fixed end 6041 of the second inner tube 604 can be in a straightened or bent state within the second outer tube 602. When the welding wire 608 moves in a curved path within the second outer tube 602, the second fixed end 6041 can move along with the welding wire 608 in a curved path within the second outer tube 602. Furthermore, the end of the second fixed end 6041 is fixedly connected to a wire pusher motor 607. The second sliding end 6042 of the second inner tube 604 can extend out of the second outer tube 602 and slide in or out of the control component 605. When the second sliding end 6042 slides in or out of the control component 605, it does not produce a curved path; it can be considered that the second sliding end 6042 slides in or out of the control component 605 in a straight line.

[0057] A gap exists between the outer surface of the second inner tube 604 and the inner surface of the second outer tube 602, ensuring that the second inner tube 604 can move in a curved path within the second outer tube 602 without bending infinitely. In other words, the second outer tube 602 provides space for the second inner tube 604 to move in a curved path while limiting the degree of bending of the second inner tube 604. Optionally, the outer diameter of the second inner tube 604 and the inner diameter of the second outer tube 602 can differ by 3-5 mm.

[0058] The first sliding end 6032 of the first inner tube 603 and the second sliding end 6042 of the second inner tube 604 slide closer or further apart within the control component 605 as the force on the welding wire 608 changes. When the first sliding end 6032 and the second sliding end 6042 slide closer or further apart within the control component 605, no curved motion occurs; it can be considered that the first sliding end 6032 and the second sliding end 6042 slide closer or further apart along a straight line within the control component 605.

[0059] Furthermore, when the welding wire 608 is tightened, it is straightened, and the first inner tube 603 and the second inner tube 604 are straightened along with it. The first sliding end 6032 and the second sliding end 6042 then slide closer together. Conversely, when the welding wire 608 is loosened, it undergoes a curved motion, and the first inner tube 603 and the second inner tube 604 move along with it. The first sliding end 6032 and the second sliding end 6042 then slide further apart.

[0060] Optionally, the welding wire force adjustment device 600 may further include a first limiting component and a second limiting component fixedly disposed within the control assembly 605. The first and second limiting components are not shown in Figure 6; please refer to the following embodiments for details.

[0061] The first limiting component is disposed on the sliding path of the first sliding end 6032 to limit the farthest position of the first sliding end 6032 sliding towards the wire drawing motor 606. The farthest position of the first sliding end 6032 sliding towards the wire drawing motor 606 is the position of the first limiting component.

[0062] The second limiting component is disposed on the sliding path of the second sliding end 6042 to limit the farthest position of the second sliding end 6042 sliding towards the wire pusher motor 607. The farthest position of the second sliding end 6042 sliding towards the wire pusher motor 607 is the position of the second limiting component.

[0063] The control component 605 can be used to control the wire drawing motor 606 to operate at a uniform (or constant) speed, and to adjust the rotational speed of the wire pusher motor 607 according to the force changes of the welding wire 608. Optionally, the control component 605 can be used to: control the wire drawing motor 606 to operate at a constant speed of a first preset speed; determine the amount of sliding change of the first sliding end 6032 and the second sliding end 6042; and adjust the rotational speed of the wire pusher motor 607 based on the amount of sliding change so that the welding wire 608 is free from force.

[0064] The first preset rotational speed can be set according to the needs of the actual application scenario. In specific implementation, the first preset rotational speed is usually the set rotational speed (or set speed) of the wire drawing motor. Free force on the welding wire refers to a state where the welding wire is neither too tight nor too loose; in this case, the force on the welding wire can be considered zero. It should be noted that free force on the welding wire can also be called force balance on the welding wire, and this application does not limit this.

[0065] Optionally, the control component 605 controls the drawing motor 606 to operate at a constant first preset speed, which can be achieved as follows: the control component 605 acquires the actual speed of the drawing motor 606 in real time or periodically; then, the control component 605 determines the speed difference between the actual speed and the first preset speed; subsequently, the control component 605 adjusts the current speed of the drawing motor 606 according to the speed difference, so that the drawing motor 606 operates at a constant first preset speed.

[0066] If the speed difference is greater than zero, the control component 605 reduces the current speed of the drawing motor 606 by the speed difference; or, if the speed difference is less than zero, the control component 605 increases the current speed of the drawing motor 606 by the absolute value of the speed difference; or, if the speed difference is equal to zero, the control component 605 controls the drawing motor 606 to operate at the current speed.

[0067] Optionally, such as Figure 6B As shown, the control component 605 can follow Figure 6BThe negative feedback method shown controls the wire drawing motor 606 to operate at a constant first preset speed. Here, speed feedback refers to feeding back the actual speed of the wire drawing motor 606. The set speed is the first preset speed. The control component 605 can adjust the current speed of the wire drawing motor 606 based on the actual speed and the set speed using a proportional-integral-differential (PID) controller, thus ensuring the wire drawing motor operates at a constant first preset speed.

[0068] See Figure 7A , Figure 7A This is a schematic diagram of another welding wire force adjustment device provided in an embodiment of this application. This welding wire force adjustment device 700 can be applied to a welding system. Figure 7A As shown, the welding wire force adjustment device 700 may include: a first outer tube 701, a second outer tube 702, a first inner tube 703, a second inner tube 704, and a control component 705.

[0069] The specific structure and function of the first outer tube 701, the second outer tube 702, the first inner tube 703, the second inner tube 704 and the control component 705 can be referred to the content of the foregoing embodiments, and will not be repeated here.

[0070] In one possible implementation, the control component 705 may include: a third outer tube 7051, a first position sensor 7052, a second position sensor 7053, a first controller 7054, and a housing 7055.

[0071] The outer casing 7055 is hollow, providing mounting space for the fixed installation of the third outer tube 7051. The third outer tube 7051 is fixed between the first outer tube 701 and the second outer tube 702. That is, one end of the third outer tube 7051 is fixedly connected to the first outer tube 701, and the other end is fixedly connected to the second outer tube 702.

[0072] As the force on the welding wire 706 changes, the first sliding end 7031 of the first inner tube 703 and the second sliding end 7041 slide closer or further apart within the third outer tube 7051. When the first sliding end 7031 and the second sliding end 7041 slide closer or further apart within the third outer tube 7051, no curved motion occurs; it can be considered that the first sliding end 7031 and the second sliding end 7041 slide closer or further apart along a straight line within the third outer tube 7051.

[0073] Furthermore, when the welding wire 706 is tightened, it is straightened, and the first inner tube 703 and the second inner tube 704 are straightened along with it. The first sliding end 7031 and the second sliding end 7041 then slide closer together in a straight line within the third outer tube 7051, decreasing the distance between the two ends A and B. Conversely, when the welding wire 706 is loosened, it undergoes a curved motion, and the first inner tube 703 and the second inner tube 704 move together in a curved motion. The first sliding end 7031 and the second sliding end 7041 then slide further apart in a straight line within the third outer tube 7051, increasing the distance between the two ends A and B.

[0074] Optionally, the inner diameter of the third outer tube 7051 may differ from the outer diameter of the first inner tube 703 by 0.5-1 mm. The inner diameter of the third outer tube 7051 may also differ from the outer diameter of the second inner tube 704 by 0.5-1 mm.

[0075] The first position sensor 7052 is fixed to the end of the first sliding end 7031. As the force on the welding wire 706 changes, it slides together with the first sliding end 7031 in the third outer tube 7051. The first position sensor 7052 can be used to detect the position of the end of the first sliding end 7031.

[0076] The second position sensor 7053 is fixed to the end of the second sliding end 7041. As the force on the welding wire 706 changes, it slides together with the second sliding end 7041 in the third outer tube 7051. The second position sensor 7053 can be used to detect the position of the end of the second sliding end 7041.

[0077] Optionally, both the first position sensor 7052 and the second position sensor 7053 can be configured as photoelectric sensors or Hall sensors, etc., and this application does not impose any restrictions on this.

[0078] Optionally, the control component 705 may further include a first limiting component 7056 and a second limiting component 7057. The first limiting component 7056 limits the farthest sliding position of the first sliding end 7031 towards the first outer tube 701, and the farthest sliding position of the first sliding end 7031 towards the first outer tube 701 is the position of the first limiting component 7056. The second limiting component 7057 limits the farthest sliding position of the second sliding end 7041 towards the second outer tube 702, and the farthest sliding position of the second sliding end 7041 towards the second outer tube 702 is the position of the second limiting component 7057.

[0079] During welding, the control component 705 can be used to control the wire drawing motor to operate at a constant speed, and to adjust the speed of the wire pusher motor according to the force changes of the welding wire 706. Optionally, the control component 705 can be used to: control the wire drawing motor to operate at a constant speed of a first preset speed; determine the amount of sliding change of the first sliding end 7031 and the second sliding end 7041; and adjust the speed of the wire pusher motor based on the amount of sliding change so that the welding wire 706 is free to be subjected to force.

[0080] Optionally, the control component 705 can control the wire drawing motor to operate at a constant first preset speed via the first controller 7054. For specific implementation details, please refer to the foregoing embodiments; further elaboration is not provided here.

[0081] Optionally, the control component 705 determines the sliding change of the first sliding end 7031 and the second sliding end 7041 in the following manner: First, the first controller 7054 acquires the first position detected by the first position sensor 7052 and the second position detected by the second position sensor 7053; then, the first controller 7054 determines the actual distance between the first sliding end 7031 and the second sliding end 7041 based on the first position and the second position, that is, determines the distance between the two ends AB; then, the first controller 7054 determines the distance difference between the actual distance and the preset standard distance; the preset standard distance is the distance between the first sliding end 7031 and the second sliding end 7041 when the welding wire 706 is under free force; finally, the first controller 7054 determines the distance difference as the sliding change, that is, in this application scenario, the sliding change of the first sliding end 7031 and the second sliding end 7041 is the distance difference.

[0082] Optionally, the control component 705 adjusts the speed of the wire pusher motor based on the sliding change to allow the welding wire 706 to be free from force. This can be achieved as follows: the first controller 7054 determines a first adjustment speed based on the sliding change; the speed difference between the actual speed of the wire pusher motor and a second preset speed is determined and recorded as the second adjustment speed; the first controller 7054 adjusts the speed of the wire pusher motor based on the first adjustment speed and the second adjustment speed.

[0083] The second preset speed can be set according to the needs of the actual application scenario. In practice, the second preset speed is usually the set speed of the wire pusher motor. A first preset speed and a second preset speed can be preset in advance based on the specific conditions of the equipment in the actual application scenario to ensure that the welding wire is under free force. That is to say, the first preset speed can be considered as the set speed of the wire puller motor when the welding wire is under free force, and the second preset speed is the set speed of the wire pusher motor when the welding wire is under free force.

[0084] Optionally, such as Figure 7B As shown, the control component 705 can follow Figure 7B The negative feedback method shown adjusts the speed of the wire feeder motor to allow the welding wire 706 to be subjected to free force. Here, speed feedback refers to feeding back the actual speed of the wire feeder motor, with the set speed being a second preset speed. Wire force feedback refers to feeding back the change in sliding force. The control component 705 can adjust the current speed of the wire feeder motor based on the actual speed, set speed, and change in sliding force using a proportional-integral-derivative (PID) controller, thus allowing the welding wire to be subjected to free force.

[0085] See Figure 8 , Figure 8 This is a schematic diagram of another welding wire force adjustment device provided in an embodiment of this application. This welding wire force adjustment device can be applied to a welding system. Figure 8 As shown, the welding wire force adjustment device 800 may include: a first outer tube 801, a second outer tube 802, a first inner tube 803, a second inner tube 804, and a control component 805.

[0086] The specific structure and function of the first outer tube 801, the second outer tube 802, the first inner tube 803, the second inner tube 804 and the control component 805 can be referred to the content of the foregoing embodiments, and will not be repeated here.

[0087] In one possible implementation, the control component 805 may include: a fourth outer tube 8051, a first conductive nozzle 8052, a second conductive nozzle 8053, a second controller 8054, and a housing 8055.

[0088] The outer casing 8055 is hollow, providing mounting space for the fixed installation of the fourth outer tube 8051. The fourth outer tube 8051 is fixed between the first outer tube 801 and the second outer tube 802. That is, one end of the fourth outer tube 8051 is fixedly connected to the first outer tube 801, and the other end is fixedly connected to the second outer tube 802.

[0089] As the force on the welding wire 806 changes, the first sliding end 8031 ​​of the first inner tube 803 and the second sliding end 8041 slide closer or further apart within the fourth outer tube 8051. When the first sliding end 8031 ​​and the second sliding end 8041 slide closer or further apart within the fourth outer tube 8051, they do not undergo curved motion; it can be considered that the first sliding end 8031 ​​and the second sliding end 8041 slide closer or further apart along a straight line within the fourth outer tube 8051.

[0090] Furthermore, when the welding wire 806 is tightened, it is straightened, and the first inner tube 803 and the second inner tube 804 are straightened along with it. The first sliding end 8031 ​​and the second sliding end 8041 then slide closer together in a straight line within the fourth outer tube 8051, reducing the distance between the two ends of CD. Conversely, when the welding wire 806 is loosened, it undergoes a curved motion, and the first inner tube 803 and the second inner tube 804 move in a curved line along with it. The first sliding end 8031 ​​and the second sliding end 8041 then slide further apart in a straight line within the fourth outer tube 8051, increasing the distance between the two ends of CD.

[0091] Optionally, the inner diameter of the fourth outer tube 8051 may differ from the outer diameter of the first inner tube 803 by 0.5-1 mm. The inner diameter of the fourth outer tube 8051 may also differ from the outer diameter of the second inner tube 804 by 0.5-1 mm.

[0092] The first conductive tip 8052 is fixed to the end of the first sliding end 8031 ​​and is in electrical contact with the welding wire 806. As the force on the welding wire 806 changes, it slides together with the first sliding end 8031 ​​in the fourth outer tube 8051. The first conductive tip 8052 is used to detect the voltage at the end of the first sliding end 8031 ​​corresponding to the welding wire 806.

[0093] The second conductive tip 8053 is fixed to the end of the second sliding end 8041 and is in electrical contact with the welding wire 806. As the force on the welding wire 806 changes, it slides together with the second sliding end 8041 in the fourth outer tube 8051. The second conductive tip 8053 is used to detect the voltage at the end of the second sliding end 8041 corresponding to the welding wire 806.

[0094] The welding wire between the first conductive tip 8052 and the second conductive tip 8053 can be equivalent to a resistor R. W That is, the solder wire between the two ends of CD can be equivalent to a resistor R. W When the first sliding end 8031 ​​and the second sliding end 8041 slide closer together in a straight line inside the fourth outer tube 8051, the distance between the two ends of CD decreases. Correspondingly, the first conductive tip 8052 and the second conductive tip 8053 slide closer together in a straight line inside the fourth outer tube 8051. In this application scenario, the resistor R... W As the resistance decreases, while the current in the welding wire remains constant, the voltage difference across CD decreases.

[0095] Conversely, when the first sliding end 8031 ​​and the second sliding end 8041 slide away in a straight line within the fourth outer tube 8051, and the distance between the two ends of CD increases, the first conductive tip 8052 and the second conductive tip 8053 correspondingly slide away in a straight line within the fourth outer tube 8051. In this application scenario, the resistor R... WAs the resistance of the welding wire increases, while the current in the welding wire remains constant, the voltage difference across CD increases.

[0096] Optionally, both the first conductive tip 8052 and the second conductive tip 8053 can be made of copper alloy. It should be noted that the first conductive tip 8052 and the second conductive tip 8053 can also be made of other elements for detecting voltage, current or resistance, and this application does not limit this.

[0097] Optionally, the control component 805 may further include a first limiting component 8056 and a second limiting component 8057. The first limiting component 8056 limits the farthest sliding position of the first sliding end 8031 ​​towards the first outer tube 801, and the farthest sliding position of the first sliding end 8031 ​​towards the first outer tube 801 is the position of the first limiting component 8056. The second limiting component 8057 limits the farthest sliding position of the second sliding end 8041 towards the second outer tube 802, and the farthest sliding position of the second sliding end 8041 towards the second outer tube 802 is the position of the second limiting component 8057.

[0098] During welding, the control component 805 can be used to control the wire drawing motor to operate at a constant speed, and to adjust the speed of the wire pusher motor according to the force changes on the welding wire 806. Optionally, the control component 805 can be used to: control the wire drawing motor to operate at a constant speed of a first preset speed; determine the amount of sliding change of the first sliding end 8031 ​​and the second sliding end 8041; and adjust the speed of the wire pusher motor based on the amount of sliding change so that the welding wire 806 is free to be subjected to force.

[0099] Optionally, the control component 805 can control the wire drawing motor to operate at a constant first preset speed via the second controller 8054. For specific implementation details, please refer to the foregoing embodiments; further elaboration is not provided here.

[0100] Optionally, the control component 805 determines the sliding change of the first sliding end 8031 ​​and the second sliding end 8041 in the following manner: The second controller 8054 acquires the first voltage detected by the first conductive nozzle 8052 and the second voltage detected by the second conductive nozzle 8053; the second controller 8054 determines the actual voltage between the first sliding end 8031 ​​and the second sliding end 8041 based on the first voltage and the second voltage, where the actual voltage is the voltage of the corresponding welding wire segment between the first sliding end 8031 ​​and the second sliding end 8041; the second controller 8054 determines the voltage difference between the actual voltage and a preset standard voltage; the preset standard voltage is the voltage of the corresponding welding wire segment between the first sliding end 8031 ​​and the second sliding end 8041 when the welding wire is under free force; the second controller 8054 determines the voltage difference as the sliding change, that is, in this application scenario, the sliding change of the first sliding end 8031 ​​and the second sliding end 8041 is the voltage difference.

[0101] Optionally, the control component 805 adjusts the speed of the wire pusher motor based on the slip change to allow the welding wire 806 to be free from force. This can be achieved as follows: the second controller 8054 determines a third adjustment speed based on the slip change; the second controller 8054 determines the speed difference between the actual speed of the wire pusher motor and the second preset speed, and records this speed difference as a fourth adjustment speed; the second controller 8054 adjusts the speed of the wire pusher motor based on the third adjustment speed and the fourth adjustment speed.

[0102] The second preset speed can be set according to the needs of the actual application scenario. In practice, the second preset speed is usually the set speed of the wire pusher motor. A first preset speed and a second preset speed can be preset in advance based on the specific conditions of the equipment in the actual application scenario to ensure that the welding wire is under free force. That is to say, the first preset speed can be considered as the set speed of the wire puller motor when the welding wire is under free force, and the second preset speed is the set speed of the wire pusher motor when the welding wire is under free force.

[0103] Optionally, the control component 805 can also be configured to... Figure 7B The negative feedback method shown adjusts the speed of the wire feeder motor to allow the welding wire 806 to be subjected to free force. For details, please refer to the aforementioned embodiments; they will not be repeated here.

[0104] See Figure 9 , Figure 9 This is a schematic diagram of another welding wire force adjustment device provided in an embodiment of this application. This welding wire force adjustment device can be applied to a welding system. Figure 9As shown, the welding wire force adjustment device 900 may include: a first outer tube 901, a second outer tube 902, a first inner tube 903, a second inner tube 904, and a control component 905.

[0105] The specific structure and function of the first outer tube 901, the second outer tube 902, the first inner tube 903, the second inner tube 904 and the control component 905 can be referred to the content of the foregoing embodiments, and will not be repeated here.

[0106] In one possible implementation, the control component 905 may include: a tension spring 9051, a first pressure sensor 9052, a second pressure sensor 9053, a third controller 9054, and a housing 9055.

[0107] The outer casing 9055 is hollow, providing mounting space for the tension spring 9051. The tension spring 9051 is fixedly connected between the first sliding end 9031 of the first inner tube 903 and the second sliding end 9041 of the second inner tube 904. That is, one end of the tension spring 9051 is fixedly connected to the end of the first sliding end 9031, and the other end is fixedly connected to the end of the second sliding end 9041.

[0108] As the force on the welding wire 906 changes, the first sliding end 9031 and the second sliding end 9041 stretch or compress the tension spring 9051. When the first sliding end 9031 and the second sliding end 9041 stretch or compress the spring, no curved motion occurs; it can be considered that the first sliding end 9031 and the second sliding end 9041 stretch or compress the tension spring 9051 along a straight line. Furthermore, when the tension spring 9051 is stretched or compressed, no curved motion occurs; it is stretched or compressed along a straight line.

[0109] Furthermore, when the welding wire 906 is tightened, it is straightened, and the first inner tube 903 and the second inner tube 904 are straightened along with it. This causes the first sliding end 9031 and the second sliding end 9041 to compress the tension spring 9051, increasing the force at both ends EF. Conversely, when the welding wire 906 is loosened, it undergoes a curved motion, and the first inner tube 903 and the second inner tube 904 move in a curved path along with it. This causes the first sliding end 9031 and the second sliding end 9041 to stretch the tension spring 9051, decreasing the force at both ends EF.

[0110] The first pressure sensor 9052 is fixed to the end of the first sliding end 9031. As the force on the welding wire 906 changes, it, together with the first sliding end 9031, stretches or compresses the tension spring 9051. The first pressure sensor 9052 is used to detect the pressure on the end of the first sliding end 9031.

[0111] The second pressure sensor 9053 is fixed to the end of the second sliding end 9041. As the force on the welding wire 906 changes, it, together with the second sliding end 9041, stretches or compresses the tension spring 9051. The second pressure sensor 9053 is used to detect the pressure on the end of the second sliding end 9041.

[0112] Optionally, the control component 905 may further include a first limiting component 9056 and a second limiting component 9057. The first limiting component 9056 limits the farthest sliding position of the first sliding end 9031 towards the first outer tube 901, and the farthest sliding position of the first sliding end 9031 towards the first outer tube 901 is the position of the first limiting component 9056. The second limiting component 9057 limits the farthest sliding position of the second sliding end 9041 towards the second outer tube 902, and the farthest sliding position of the second sliding end 9041 towards the second outer tube 902 is the position of the second limiting component 9057.

[0113] During welding, the control component 905 can be used to control the wire drawing motor to operate at a constant speed, and to adjust the speed of the wire pusher motor according to the force changes on the welding wire 906. Optionally, the control component 905 can be used to: control the wire drawing motor to operate at a constant speed of a first preset speed; determine the amount of sliding change of the first sliding end 9031 and the second sliding end 9041; and adjust the speed of the wire pusher motor based on the amount of sliding change so that the welding wire 906 is free to be subjected to force.

[0114] Optionally, the control component 905 can control the wire drawing motor to operate at a constant first preset speed via the third controller 9054. For specific implementation details, please refer to the foregoing embodiments; further elaboration is not provided here.

[0115] Optionally, the control component 905 determines the sliding change of the first sliding end 9031 and the second sliding end 9041 in the following manner: the third controller 9054 acquires the first pressure detected by the first pressure sensor 9052 and the second pressure detected by the second pressure sensor 9053; the third controller 9054 determines the actual force between the first sliding end 9031 and the second sliding end 9041, i.e., the force at both ends EF, based on the first pressure and the second pressure; the third controller 9054 determines the force difference between the actual force and the preset standard force; the preset standard force is the force between the first sliding end 9031 and the second sliding end 9041 when the welding wire is under free force; the third controller 9054 determines the force difference as the sliding change, i.e., in this application scenario, the sliding change of the first sliding end 9031 and the second sliding end 9041 is the force difference.

[0116] Optionally, the control component 905 adjusts the speed of the wire pusher motor based on the slip change to allow the welding wire 906 to be free from force. This can be achieved as follows: a fifth adjustment speed is determined by a third controller 9054 based on the slip change; the third controller 9054 determines the speed difference between the actual speed of the wire pusher motor and the second preset speed, and records this speed difference as the sixth adjustment speed; the third controller 9054 adjusts the speed of the wire pusher motor based on the fifth and sixth adjustment speeds. Further implementation methods can be found in the following method embodiments, and will not be detailed here.

[0117] The second preset speed can be set according to the needs of the actual application scenario. In practice, the second preset speed is usually the set speed of the wire pusher motor. A first preset speed and a second preset speed can be preset in advance based on the specific conditions of the equipment in the actual application scenario to ensure that the welding wire is under free force. That is to say, the first preset speed can be considered as the set speed of the wire puller motor when the welding wire is under free force, and the second preset speed is the set speed of the wire pusher motor when the welding wire is under free force.

[0118] Optionally, the control component 905 can also be configured to... Figure 7B The negative feedback method shown adjusts the speed of the wire feeder motor to allow the welding wire 906 to be subjected to free force. For details, please refer to the aforementioned embodiments; they will not be repeated here.

[0119] The wire force adjustment device provided in this application embodiment can control the wire drawing motor to operate at a constant first preset speed, control the stable output of the welding wire, and at the same time, adjust the speed of the wire pushing motor according to the force change of the welding wire, so that the welding wire is in a free state of force, that is, neither loose nor tight, and will not cause wire piling or blockage. It can meet the needs of aluminum welding scenarios and has better applicability.

[0120] It is understood that the above embodiments are merely examples, and modifications can be made to the above embodiments in actual implementation. Those skilled in the art will understand that any modified structures of the above embodiments that do not require creative effort fall within the protection scope of this application, and will not be described again in the embodiments.

[0121] Based on the same inventive concept, this application also provides a method for adjusting the force of a welding wire for the aforementioned welding wire force adjustment device. Since the principle of the problem solved by the welding wire force adjustment method is similar to that of the aforementioned welding wire force adjustment device, the implementation of the welding wire force adjustment method can refer to the implementation of the aforementioned welding wire force adjustment device, and the repeated parts will not be described again.

[0122] The embodiments of the welding wire stress adjustment method provided in this application will be described below with reference to the accompanying drawings.

[0123] See Figure 10 , Figure 10 This is a flowchart illustrating a method for adjusting the force on a welding wire, as provided in an embodiment of this application. This method can be applied to the aforementioned welding wire force adjustment device. Alternatively, this method can also be used in robots or welding machines. For example, see... Figure 11 The wire drawing motor can be fixedly mounted at the end of the robot's robotic arm for convenient welding. The wire pushing motor can be fixed to the robot's base or foundation. The robot's control system can be used as the controller for the wire force-bearing device, and other force monitoring components of the control system, such as the first and second position sensors shown in Figure 7, can be used. Figure 8 The first conductive tip and the second conductive tip shown, or Figure 9 The first and second pressure sensors shown are fixed to the robot's robotic arm. A first outer tube is fixedly connected between the wire drawing motor and the force monitoring part, and a second outer tube is fixedly connected between the wire pushing motor and the force monitoring part. This method can then be implemented using a robot; for example, it can be implemented when performing welding operations using a robot.

[0124] like Figure 10 As shown, the method may include the following steps:

[0125] Step S101: Control the wire drawing motor to operate at a constant first preset speed through the control component.

[0126] The specific implementation of step S101 can be found in the aforementioned device embodiments, and will not be repeated here.

[0127] Step S102: Determine the sliding change of the first sliding end and the second sliding end through the control component.

[0128] In one possible implementation, the control component may include: a third outer tube, a first position sensor, a second position sensor, and a first controller; the third outer tube is fixed between the first outer tube and the second outer tube; the first position sensor is fixed to the end of the first sliding end and slides together with the first sliding end in the third outer tube as the force on the welding wire changes; the second position sensor is fixed to the end of the second sliding end and slides together with the second sliding end in the third outer tube as the force on the welding wire changes.

[0129] In this application scenario, the amount of sliding change of the first sliding end and the second sliding end is determined by the control component, which can be achieved in the following way:

[0130] The first step is to obtain the first position detected by the first position sensor and the second position detected by the second position sensor through the first controller.

[0131] The second step is to determine the actual distance between the first sliding end and the second sliding end based on the first position and the second position using the first controller.

[0132] The third step is to determine the distance difference between the actual distance and the preset standard distance using the first controller.

[0133] The preset standard distance is the distance between the first sliding end and the second sliding end when the welding wire is under free force.

[0134] Fourth step: The distance difference is determined by the first controller as the sliding change of the first sliding end and the second sliding end.

[0135] For further details, please refer to the aforementioned device embodiments, which will not be repeated here.

[0136] In one possible implementation, the control component may include: a fourth outer tube, a first conductive nozzle, a second conductive nozzle, and a second controller; the fourth outer tube is fixed between the first outer tube and the second outer tube; the first conductive nozzle is fixed to the end of the first sliding end and is in electrical contact with the welding wire, and slides in the fourth outer tube together with the first sliding end as the force on the welding wire changes; the second conductive nozzle is fixed to the end of the second sliding end and is in electrical contact with the welding wire, and slides in the fourth outer tube together with the second sliding end as the force on the welding wire changes.

[0137] In this application scenario, the amount of sliding change of the first sliding end and the second sliding end is determined by the control component, which can be achieved in the following way:

[0138] The first step is to obtain the first voltage detected by the first conductive nozzle and the second voltage detected by the second conductive nozzle through the second controller.

[0139] The second step is to determine the actual voltage between the first sliding end and the second sliding end based on the first voltage and the second voltage using the second controller.

[0140] The third step is to determine the voltage difference between the actual voltage and the preset standard voltage using the second controller.

[0141] The preset standard voltage is the voltage between the first sliding end and the second sliding end when the welding wire is under free force.

[0142] Fourth step: Determine the voltage difference as the sliding change of the first sliding end and the second sliding end through the second controller.

[0143] For further details, please refer to the aforementioned device embodiments, which will not be repeated here.

[0144] In one possible implementation, the control component may include: a tension spring, a first pressure sensor, a second pressure sensor, and a third controller; the tension spring is fixedly connected between the first sliding end and the second sliding end; the first pressure sensor is fixed to the end of the first sliding end, and together with the first sliding end, stretches or compresses the tension spring as the force on the welding wire changes; the second pressure sensor is fixed to the end of the second sliding end, and together with the second sliding end, stretches or compresses the tension spring as the force on the welding wire changes.

[0145] In this application scenario, the amount of sliding change of the first sliding end and the second sliding end is determined by the control component, which can be achieved in the following way:

[0146] The first step is to obtain the first pressure detected by the first pressure sensor and the second pressure detected by the second pressure sensor through the third controller.

[0147] The second step involves determining the actual force between the first sliding end and the second sliding end based on the first pressure and the second pressure using the third controller.

[0148] The third step is to determine the force difference between the actual force and the preset standard force through the third controller.

[0149] The preset standard force is the force between the first sliding end and the second sliding end when the welding wire is under free force.

[0150] The fourth step is to determine the force difference as the sliding change of the first sliding end and the second sliding end through the third controller.

[0151] For further details, please refer to the aforementioned device embodiments, which will not be repeated here.

[0152] Step S103: Adjust the speed of the wire pusher motor based on the sliding change by the control component so that the welding wire is free to be subjected to force.

[0153] The specific implementation of step S103 can be found in the aforementioned device embodiments, and will not be repeated here.

[0154] In summary, the welding wire force adjustment device and welding wire force adjustment method provided in this application have the following advantages:

[0155] The wire force adjustment device and method provided in this application embodiment can control the wire drawing motor to operate at a constant first preset speed, control the stable output of the wire, and at the same time, adjust the speed of the wire pushing motor according to the change of the wire force, so that the wire is in a free state of force, that is, neither loose nor tight, and will not cause wire piling or blockage. It can meet the needs of aluminum welding scenarios and has better applicability.

[0156] While this application provides the method operation steps as described in the embodiments or flowcharts, more or fewer operation steps may be included based on conventional or non-inventive labor. The order of steps listed in the embodiments is merely one possible execution order among many and does not represent the only execution order. In actual device or client product execution, the methods shown in the embodiments or drawings can be executed sequentially or in parallel (e.g., in a parallel processor or multi-threaded processing environment).

[0157] Those skilled in the art will understand that the embodiments of this specification can be provided as methods, apparatus (systems), or computer program products. Therefore, the embodiments of this specification can take the form of entirely hardware embodiments, entirely software embodiments, or embodiments combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0158] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the flowchart... Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0159] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0160] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0161] The various embodiments in this specification are described in a progressive manner. Similar or identical components between embodiments can be referred to interchangeably. Each embodiment focuses on its differences from other embodiments. In particular, the method embodiments are relatively simple in description because they are fundamentally similar to the apparatus embodiments; relevant details can be found in the component descriptions of the apparatus embodiments. Throughout this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. The terms "upper," "lower," etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are used only for the convenience of describing this application and for simplification, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting this application. Unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances. It should be noted that, without conflict, the embodiments and features in the embodiments of this application can be combined with each other. This application is not limited to any single aspect, nor to any single embodiment, nor to any combination and / or substitution of these aspects and / or embodiments. Moreover, each aspect and / or embodiment of this application can be used alone or in combination with one or more other aspects and / or embodiments.

[0162] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to the components or all technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and they should all be covered within the scope of the claims and specification of this application.

[0163] In the description of this application, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship in the working state of this application. They are only for the convenience of describing this application 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 application.

[0164] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0165] The present application has been described above with reference to preferred embodiments; however, these embodiments are merely exemplary and illustrative. Various substitutions and modifications can be made to the present application based on these embodiments, all of which fall within the protection scope of the present application.

Claims

1. A welding wire force adjustment device, characterized in that, The device includes: First outer tube, second outer tube, first inner tube, second inner tube, and control assembly; The first outer tube, the control component, and the second outer tube are sequentially fixed between the wire drawing motor and the wire pushing motor; The first inner tube is tightly fitted around the outside of the welding wire, and includes a first fixed end that can be bent and fitted inside the first outer tube and fixedly connected to the wire drawing motor, and a first sliding end that can pass through the first outer tube; The second inner tube is tightly fitted around the outside of the welding wire, including a second fixed end that can be bent and fitted inside the second outer tube and fixedly connected to the wire pusher motor, and a second sliding end that can pass through the second outer tube; The first sliding end and the second sliding end slide closer or further away within the control assembly as the force on the welding wire changes; The control component is used for: The wire drawing motor is controlled to operate at a constant speed of a first preset speed; Determine the amount of sliding change of the first sliding end and the second sliding end; The rotational speed of the wire pusher motor is adjusted based on the slip change to allow the welding wire to be free from force. The control component includes: Fourth outer tube, first conductive nozzle, second conductive nozzle, and second controller; The fourth outer tube is fixed between the first outer tube and the second outer tube; The first conductive tip is fixed to the end of the first sliding end and is in electrical contact with the welding wire. As the force on the welding wire changes, it slides together with the first sliding end in the fourth outer tube. The second conductive tip is fixed to the end of the second sliding end and is in electrical contact with the welding wire. As the force on the welding wire changes, it slides together with the second sliding end in the fourth outer tube. The control component is used to determine the amount of sliding change of the first sliding end and the second sliding end, specifically by performing the following operation through the second controller: Obtain the first voltage detected by the first conductive nozzle and the second voltage detected by the second conductive nozzle; The actual voltage between the first sliding end and the second sliding end is determined based on the first voltage and the second voltage. Determine the voltage difference between the actual voltage and the preset standard voltage; the preset standard voltage is the voltage between the first sliding end and the second sliding end when the welding wire is under free force. The voltage difference is determined to be the sliding change.

2. The apparatus as claimed in claim 1, characterized in that, The device further includes: A first limiting component and a second limiting component are fixedly disposed within the control assembly; The first limiting component is disposed on the sliding path of the first sliding end, and is used to limit the farthest position of the first sliding end sliding toward the wire drawing motor side; The second limiting component is disposed on the sliding path of the second sliding end, and is used to limit the farthest position of the second sliding end sliding toward the wire pusher motor.

3. A method for adjusting the force on a welding wire, characterized in that, The method is applied to the welding wire force adjustment device according to claim 1, and the method includes: The control component controls the wire drawing motor to operate at a constant first preset speed. The control component determines the amount of sliding change of the first sliding end and the second sliding end. The control component adjusts the rotational speed of the wire pusher motor based on the slip change, so that the welding wire is free to be subjected to force. The control component includes: Fourth outer tube, first conductive nozzle, second conductive nozzle, and second controller; The fourth outer tube is fixed between the first outer tube and the second outer tube; The first conductive tip is fixed to the end of the first sliding end and is in electrical contact with the welding wire. As the force on the welding wire changes, it slides together with the first sliding end in the fourth outer tube. The second conductive tip is fixed to the end of the second sliding end and is in electrical contact with the welding wire. As the force on the welding wire changes, it slides together with the second sliding end in the fourth outer tube. Determining the amount of sliding change of the first sliding end and the second sliding end through the control component includes: The second controller acquires the first voltage detected by the first conductive nozzle and the second voltage detected by the second conductive nozzle. The second controller determines the actual voltage between the first sliding end and the second sliding end based on the first voltage and the second voltage. The voltage difference between the actual voltage and the preset standard voltage is determined by the second controller; the preset standard voltage is the voltage between the first sliding end and the second sliding end when the welding wire is under free force. The second controller determines the voltage difference as the slip change.

4. The method as described in claim 3, characterized in that, The step of controlling the wire drawing motor to operate at a constant first preset speed via the control component includes: The actual rotational speed of the wire drawing motor is obtained through the control component; The control component determines the speed difference between the actual speed and the first preset speed. The control component adjusts the current speed of the wire drawing motor based on the speed difference, so that the wire drawing motor operates at a constant first preset speed.

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