Automatic lifting device for copper pole rod of vacuum plasma welding gun and control method

Abstract

The invention belongs to the technical field of vacuum plasma welding equipment, and relates to an automatic lifting device for a copper pole rod of a vacuum plasma welding gun and a control method.The automatic lifting device comprises an upper top plate, and the upper top plate is connected with a supporting plate through a plurality of supporting rods; a stepping motor is arranged above the upper top plate; an adjusting assembly is arranged below the upper top plate, and an output shaft of the stepping motor penetrates through the upper top plate and then is connected with the top face of the adjusting assembly. A copper pole rod is arranged below the adjusting assembly, and the lower end of the copper pole rod penetrates through the supporting plate; and the stepping motor is controlled by a wireless remote control system, so that the automatic lifting of the copper pole rod is realized. All the structures are connected through threads and are convenient to disassemble and assemble; the wireless remote control system controls the stepping motor to drive the copper pole rod to automatically lift in a high-precision remote manner; and the whole operating system also has an anti-misoperation function, so that the working efficiency, the automation degree and the safety in the equipment maintenance process are improved.

Description

Technical Field

[0001] This invention belongs to the field of vacuum plasma welding equipment technology, and relates to an automatic lifting device and control method for the copper electrode rod of a vacuum plasma welding torch. Background Technology

[0002] Consumable electrode melting furnace, also known as vacuum consumable electrode arc melting, is a metallurgical melting equipment used in induction melting furnaces to melt consumable electrodes produced in a vacuum environment through controlled alternating current arc heating. It is the main metallurgical melting equipment for producing non-ferrous metals and refractory metals.

[0003] The consumable electrodes required for vacuum consumable electrode arc melting are typically welded in a vacuum plasma welding box. Vacuum plasma welding is a high-precision welding technology that uses a plasma arc as a heat source in a high-vacuum environment. The copper electrode rod is one of the core components of vacuum plasma welding, with a copper electrode tip at its end. To ensure the stability of the welding process, the copper electrode tip usually needs to be inspected and replaced regularly. Due to the structure of the fixed torch, the cylinder located at the top of the fixed torch needs to be opened to allow the copper electrode tip to leak out of the water jacket for routine maintenance. Finally, the distance between the copper electrode tip and the nozzle needs to be checked; if the distance is not appropriate, the copper electrode tip needs to be finely adjusted by adjusting the nut below the cylinder. The entire maintenance of the fixed torch requires three people to work together, and the maintenance work is inefficient.

[0004] Therefore, there is an urgent need to develop an efficient copper electrode head inspection and replacement device to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to overcome the shortcomings of the prior art and to propose an automatic lifting device and control method for the copper electrode rod of a vacuum plasma welding torch. This device can frequently adjust the position of the copper electrode head, thereby achieving a high degree of automation in the welding process and high safety in the welding operation.

[0006] To achieve the above objectives, the present invention provides the following technical solution: In a first aspect, the present invention discloses an automatic lifting device for a copper electrode rod of a vacuum plasma welding torch, comprising an upper top plate, wherein the upper top plate and a support plate are connected by a plurality of support rods; a stepper motor is disposed above the upper top plate; an adjustment assembly is disposed below the upper top plate, wherein the output shaft of the stepper motor passes through the upper top plate and is connected to the top surface of the adjustment assembly; a copper electrode rod is disposed below the adjustment assembly, wherein the lower end of the copper electrode rod passes through the support plate; the stepper motor is controlled by a wireless remote control system, thereby realizing the automatic lifting and lowering of the copper electrode rod.

[0007] Furthermore, the adjustment assembly includes an upper adjustment block, a lower adjustment block, and a T-shaped threaded plate; the lower part of the upper adjustment block is connected to the upper part of the lower adjustment block; the lower part of the lower adjustment block is connected to the vertical plate of the T-shaped threaded plate.

[0008] Furthermore, the top surface of the upper adjusting block is provided with an internal thread, which is screwed to the output shaft of the stepper motor.

[0009] Furthermore, the lower part of the upper adjusting block is provided with an inward T-shaped groove, and the upper part of the lower adjusting block is provided with an outward T-shaped boss; the inward T-shaped groove and the outward T-shaped boss are connected.

[0010] Furthermore, the bottom surface of the lower adjusting block is provided with an internal thread hole, and the lower adjusting block and the vertical plate of the T-shaped threaded connecting plate are screwed together through the internal thread hole.

[0011] Furthermore, the bottom ends of the inward T-shaped groove have through holes, and anti-detachment blocks are connected to the through holes.

[0012] Furthermore, the upper adjusting block and the anti-detachment block are screwed together by bolts.

[0013] Furthermore, the horizontal plate of the T-shaped threaded plate is connected to the upper end of the copper pole rod.

[0014] Secondly, this invention discloses a control method for the automatic lifting device of the copper electrode rod of any of the above-mentioned vacuum plasma welding torches. The wireless remote control system includes a self-locking rotary switch and a wireless manual remote control. The wireless manual remote control has an anti-accidental touch function. The wireless manual remote control is equipped with a wireless remote control system. When conditions 1 and 2 are simultaneously met, the stepper motor receives the infrared signal from the wireless manual remote control. Wherein: Condition 1: When the welding furnace door is opened, the furnace door signal receiver of the wireless remote control system receives the "furnace door is open" signal; Condition 2: The self-locking rotary switch on the wireless hand remote control is set to the "on" position. Compared with the prior art, the present invention has the following beneficial effects: I. This invention provides an automatic lifting device for the copper electrode rod of a vacuum plasma welding torch. The internal components of the adjustment assembly and the connection between the adjustment assembly and the stepper motor or the copper electrode rod adopt common screw-in structures, which facilitate disassembly and periodic replacement. The selected stepper motor makes the lifting of the copper electrode rod more precise, solving the problem of repeated adjustment of the nut below the cylinder due to an unsuitable distance between the copper electrode head and the nozzle.

[0015] This device uses a wireless handheld remote control to operate a stepper motor, which drives an adjustment component to raise and lower the copper pole. This method not only significantly reduces the workload of equipment operators during maintenance but also reduces the number of maintenance personnel from three to one. Therefore, this device improves maintenance efficiency while saving manpower.

[0016] II. This invention provides an automatic lifting device for the copper electrode rod of a vacuum plasma welding torch. The copper electrode rod is lifted and lowered by a stepper motor, avoiding the damage to the equipment caused by the original cylinder lifting. In addition, the upper and lower adjusting blocks in the adjusting assembly are designed as a slot-shaped connecting mechanism. The T-shaped boss of the lower adjusting block can rotate or slide left and right in the T-shaped groove of the upper adjusting block, preventing vertical misalignment between the output shaft of the stepper motor and the copper electrode rod, thereby preventing damage to the output shaft of the stepper motor.

[0017] III. This invention provides a control method for an automatic lifting device for the copper electrode rod of a vacuum plasma welding torch. The wireless remote control system interlocks the furnace door opening signal with the manual remote control signal, and controls the stepper motor through a "one-to-one" transmission and reception mechanism. The self-locking rotary switch on the manual remote control has an anti-misoperation function. This control method not only enables remote control of the copper electrode head lifting and lowering but also improves the safety of copper electrode head replacement and maintenance. Attached Figure Description

[0018] The accompanying drawings are incorporated in and form part of this specification, and together with the description serve to explain the principles of the invention.

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, 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 the adjusting block structure of the present invention; Figure 2 This is a schematic diagram of the upper adjustment block structure of the present invention; Figure 3 This is a schematic diagram of the anti-detachment block structure of the present invention; Figure 4 This is a schematic diagram of the assembly structure of the upper and lower adjusting blocks of the present invention; Figure 5 This is a schematic diagram of a T-shaped threaded plate structure. Figure 6 This is a schematic diagram of the overall structure of the device of the present invention; Figure 7 This is a diagram for error prevention control of remote operation of stepper motors.

[0021] Wherein: 1 is a stepper motor; 2 is an upper top plate; 3 is an upper adjusting block; 4 is a lower adjusting block; 5 is a sealing seat; 6 is a support plate; 7 is a locking nut; 8 is a support rod; 9 is a T-shaped threaded plate; 10 is a copper pole rod; 11 is a fixed gun water jacket; 12 is a copper pole head; 13 is an outward T-shaped boss; 14 is an inward T-shaped groove; 15 is an anti-detachment block. Detailed Implementation

[0022] Exemplary embodiments will now be described in detail. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with the present invention. Rather, they are merely examples consistent with some aspects of the invention as detailed in the appended claims.

[0023] To enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. Example

[0024] Firstly, such as Figure 6 As shown, the present invention provides an automatic lifting device for a copper electrode rod of a vacuum plasma welding torch, including an upper top plate 2, which is connected to a support plate 6 by a plurality of support rods 8; a stepper motor 1 is disposed above the upper top plate 2; an adjustment assembly is disposed below the upper top plate 2, and the output shaft of the stepper motor 1 passes through the upper top plate 2 and is connected to the top surface of the adjustment assembly; a copper electrode rod 10 is disposed below the adjustment assembly, and the lower end of the copper electrode rod 10 passes through the support plate 6; the stepper motor 1 is controlled by a wireless remote control system, thereby realizing the automatic lifting and lowering of the copper electrode rod 10.

[0025] Specifically, the support plate 6 has several internal threads on its top surface, and the support plate 6 is fixed to the bottom end of the welding gun flange by screwing; the upper top plate 2 is screwed to the support plate 6.

[0026] More specifically, the stepper motor, the adjustment assembly, and the copper pole are arranged coaxially.

[0027] Furthermore, such as Figure 1 , Figure 2 , Figure 5 As shown, the adjustment assembly includes an upper adjustment block 3, a lower adjustment block 4, and a T-shaped threaded plate 9; the lower part of the upper adjustment block 3 is connected to the upper part of the lower adjustment block 4; the lower part of the lower adjustment block 4 is connected to the vertical plate of the T-shaped threaded plate 9.

[0028] Furthermore, the top surface of the upper adjusting block 3 is provided with an internal thread, which is screwed to the output shaft of the stepper motor 1.

[0029] Furthermore, the lower part of the upper adjusting block 3 is provided with an inward T-shaped groove 14, and the upper part of the lower adjusting block 4 is provided with an outward T-shaped boss 13; the inward T-shaped groove 14 and the outward T-shaped boss 13 are connected.

[0030] Specifically, the upper adjusting block 3 and the lower adjusting block 4 are cuboid structures.

[0031] More specifically, the size of the inward T-shaped groove 14 is larger than the size of the outward T-shaped boss 13, so that the outward T-shaped boss 13 can rotate or slide left and right inside the inward T-shaped groove 14, preventing the output shaft of the stepper motor from being vertically misaligned with the copper pole rod, thus preventing damage to the output shaft of the stepper motor.

[0032] Furthermore, the bottom surface of the lower adjusting block 4 is provided with an internal thread hole, and the lower adjusting block 4 and the vertical plate of the T-shaped threaded connecting plate 9 are screwed together through the internal thread hole.

[0033] Specifically, the inner thread hole of the lower adjusting block 4 and the vertical plate of the T-shaped threaded connecting plate 9 are both made of fine wire.

[0034] More specifically, the vertical length of the T-shaped threaded connecting plate 9 is not less than 30mm.

[0035] Furthermore, such as Figure 3 As shown, the bottom ends of the inward T-shaped groove 14 have through holes, and anti-detachment blocks 15 are connected to the through holes.

[0036] Specifically, the anti-detachment block 15 prevents the T-shaped structure connecting the upper adjustment block 3 and the lower adjustment block 4 from falling off.

[0037] Furthermore, such as Figure 4 As shown, the upper adjusting block 3 and the anti-detachment block 15 are connected by bolts.

[0038] Furthermore, the horizontal plate of the T-shaped threaded plate 9 is connected to the upper end of the copper pole rod 10.

[0039] Specifically, threaded through holes are symmetrically arranged at the four corners of the horizontal plate of the T-shaped threaded plate 9.

[0040] More specifically, the T-shaped threaded plate 9 is screwed to the upper end of the copper pole rod 10 through the threaded through hole.

[0041] Secondly, the control method of the device specifically includes a wireless remote control system comprising a self-locking rotary switch and a wireless manual remote control; the wireless manual remote control has an anti-accidental touch function; the wireless manual remote control is equipped with a wireless remote control system, and when conditions 1 and 2 are simultaneously met, the stepper motor 10 receives the infrared signal from the wireless manual remote control; wherein: Condition 1: When the welding furnace door is opened, the furnace door signal receiver of the wireless remote control system receives the "furnace door is open" signal; Condition 2: The self-locking rotary switch on the wireless hand remote control is set to the "on" position.

[0042] Specifically, the power supply voltage of the receiver of the wireless remote control system is 36V; the self-locking rotary switch is preferably a double-position self-locking rotary switch.

[0043] More specifically, the wireless remote control system is interlocked with the self-locking rotary switch, which improves the safety of the maintenance process.

[0044] The following is combined Figure 7 The principle of remote operation of stepper motors will be further explained.

[0045] The furnace door signal receiver of the wireless remote control system determines whether the welding furnace door is open. If no "furnace door is open" signal is received, the stepper motor 10 stops and the start command is invalid; if the "furnace door is open" signal is received, the stepper motor 10 enters the "start allowed" state.

[0046] When the self-locking rotary switch is set to the "on" position, if the stepper motor 10 receives a "start" signal from the wireless handheld remote control at the same time, the stepper motor 10 will start. The wireless handheld remote control sends a "start" signal to control the stepper motor 10, thereby adjusting the pulse frequency of the stepper motor 10 and adjusting the running speed of the stepper motor to a suitable range, thereby driving the automatic lifting and lowering of the adjustment component and the copper pole rod.

[0047] When the stepper motor 10 starts, the wireless remote control system continuously monitors whether the "furnace door is open" signal, the self-locking rotary switch is in the "on" position, and the "start" signal of the stepper motor 10 connected to the wireless manual remote control are normal. If any condition is not met, the stepper motor 10 stops running. If the stepper motor malfunctions, the wireless remote control system enters a fault state, waiting for manual restart and reset.

[0048] The following is based on Figure 6 and Figure 7 The specific operating procedure for the maintenance of the copper electrode head will be further explained.

[0049] S1. Remove the lock nut 7; S2. Set the self-locking rotary switch to the "on" position; S3. Press the wireless manual remote control "start" switch to control the stepper motor 10 to open the output shaft. The output shaft drives the adjustment component, which in turn drives the copper pole rod 10 to descend, allowing the copper pole head 12 to leak out of the fixed gun water jacket 11. S4. After the spare parts replacement is completed, the wireless manual remote control will shut down the output shaft of the stepper motor 10. At this time, the stepper motor can be started and stopped frequently to adjust the copper pole head to a suitable distance. S5. Set the self-locking rotary switch to the "off" position to complete the entire copper electrode head maintenance process. The above description is merely a specific embodiment of the present invention, enabling those skilled in the art to understand or implement the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention.

[0050] It should be understood that the present invention is not limited to the content already described above, and various modifications and changes can be made without departing from its scope. The scope of the present invention is limited only by the appended claims.

Claims

1. An automatic lifting device for the copper electrode rod of a vacuum plasma welding torch, characterized in that, The system includes an upper top plate (2), which is connected to a support plate (6) by several support rods (8); a stepper motor (1) is installed above the upper top plate (2); an adjustment assembly is installed below the upper top plate (2), and the output shaft of the stepper motor (1) passes through the upper top plate (2) and is connected to the top surface of the adjustment assembly; a copper pole rod (10) is installed below the adjustment assembly, and the lower end of the copper pole rod (10) passes through the support plate (6); the stepper motor (1) is controlled by a wireless remote control system, thereby realizing the automatic lifting and lowering of the copper pole rod (10).

2. The automatic lifting device for the copper electrode rod of a vacuum plasma welding torch according to claim 1, characterized in that, The adjustment assembly includes an upper adjustment block (3), a lower adjustment block (4), and a T-shaped threaded plate (9); the lower part of the upper adjustment block (3) is connected to the upper part of the lower adjustment block (4); the lower part of the lower adjustment block (4) is connected to the vertical plate of the T-shaped threaded plate (9).

3. The automatic lifting device for the copper electrode rod of a vacuum plasma welding torch according to claim 2, characterized in that, The top surface of the upper adjustment block (3) is provided with an internal thread, which is screwed to the output shaft of the stepper motor (1).

4. The automatic lifting device for the copper electrode rod of a vacuum plasma welding torch according to claim 2, characterized in that, The upper adjusting block (3) is provided with an inward T-shaped groove (14) at its lower part, and the lower adjusting block (4) is provided with an outward T-shaped boss (13) at its upper part; the inward T-shaped groove (14) and the outward T-shaped boss (13) are connected.

5. An automatic lifting device for the copper electrode rod of a vacuum plasma welding torch according to claim 2, characterized in that, The bottom surface of the lower adjusting block (4) is provided with an internal thread hole, and the lower adjusting block (4) is screwed to the vertical plate of the T-type threaded connecting plate (9) through the internal thread hole.

6. An automatic lifting device for the copper electrode rod of a vacuum plasma welding torch according to claim 4, characterized in that, The inward T-shaped groove (14) has through holes at both ends at the bottom, and anti-detachment blocks (15) are connected at the through holes.

7. An automatic lifting device for the copper electrode rod of a vacuum plasma welding torch according to claim 6, characterized in that, The upper adjusting block (3) and the anti-detachment block (15) are connected by bolts.

8. An automatic lifting device for the copper electrode rod of a vacuum plasma welding torch according to claim 2, characterized in that, The horizontal plate of the T-shaped threaded plate (9) is connected to the upper end of the copper pole rod (10).

9. A control method for an automatic lifting device for a copper electrode rod of a vacuum plasma welding torch according to any one of claims 1 to 8, characterized in that, The wireless remote control system includes a self-locking rotary switch and a wireless manual remote control; the wireless manual remote control has an anti-accidental touch function; the wireless manual remote control is equipped with a wireless remote control system, and when conditions 1 and 2 are met simultaneously, the stepper motor (10) receives the infrared signal from the wireless manual remote control; wherein: Condition 1: When the welding furnace door is opened, the furnace door signal receiver of the wireless remote control system receives the "furnace door is open" signal; Condition 2: The self-locking rotary switch on the wireless hand remote control is set to the "on" position.

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