Superconducting coil winding equipment

Abstract

The utility model discloses superconducting coil winding equipment, which is characterized in that a PLC (Programmable Logic Controller) control system is electrically connected with a first driving mechanism, a second driving mechanism, a tension sensor, a magnetic powder controller and a photoelectric encoder and is configured to adjust the exciting current of the magnetic powder controller based on a tension feedback signal; and the speed ratio of the axial moving speed to the rotating speed of the main shaft is controlled through a displacement compensation algorithm, so that the winding linear speed is smaller than or equal to 0.5 m / s, and the interlayer dislocation amount is smaller than or equal to 0.02 mm. According to the utility model, the number of joints is reduced through winding of the long belt, better error control is realized through accurate control, and the compactness, the magnetic field uniformity and the stability of the magnet can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of superconducting technology, and in particular to a superconducting coil winding device. Background Technology

[0002] In recent years, the fabrication process and performance of second-generation high-temperature superconducting tapes have been significantly improved, making them highly sought after in fields such as superconducting power, medical, and energy due to their excellent current-carrying capacity, high field performance, mechanical properties, and high operating temperature. High-temperature superconducting solenoid coils are usually wound in a double-pane or single-pane configuration, but this type of process results in a large number of coil joints and gaps between the panes, leading to poor magnet compactness and stability, which urgently needs improvement. Utility Model Content

[0003] To address the technical problems existing in the background art, this utility model proposes a superconducting coil winding device for winding sheet-like wires onto a wire spool to form a superconducting coil, comprising:

[0004] A base on which a main shaft, a first drive mechanism, and a second drive mechanism are mounted;

[0005] The first drive mechanism includes a servo motor and a linkage gear set, which is used to drive the main shaft to rotate around the axis. A screw can be installed on the main shaft.

[0006] The second drive mechanism includes a ball screw transmission assembly and a linear encoder, which is used to drive the main shaft to move back and forth along the axial direction with an accuracy of 0.01mm.

[0007] A wire-releasing reel, mounted on a base, is used to release the wire. The sheet-like wire has a width of 10mm ± 0.05mm and a thickness of 0.1mm ± 0.005mm. The base is copper and the surface is coated with multiple layers of conductive coating with a resistivity lower than that of copper.

[0008] The guide wheel assembly includes multiple guide wheels arranged parallel to the feed wheel and is used to guide the wire released from the feed wheel to the wire spool;

[0009] A tension sensor is installed between the pay-off reel and the guide wheel assembly to detect the tension of the conductor in real time;

[0010] The magnetic particle controller is installed on the shaft of the guide wheel assembly and dynamically controls the friction between the wire and the guide wheel by adjusting the excitation current.

[0011] The photoelectric encoder, linked with the first drive mechanism, is used to monitor the winding length and the number of winding layers on the spool in real time.

[0012] The PLC control system is electrically connected to the first drive mechanism, the second drive mechanism, the tension sensor, the magnetic powder controller, and the photoelectric encoder. It is configured to adjust the excitation current of the magnetic powder controller based on the tension feedback signal, and control the speed ratio of the axial movement speed to the rotation speed of the spindle through the displacement compensation algorithm, so that the winding line speed is ≤0.5m / s and the interlayer misalignment is ≤0.02mm.

[0013] The guide wheel assembly includes four ceramic guide wheels. The distance between each guide wheel is adjusted by an electric push rod with an adjustment accuracy of ±0.01mm. The wheel surface is provided with a V-shaped guide groove with a width of 12mm. The guide groove is embedded with a PTFE wear-resistant pad. The surface of each pair of guide wheels is covered with a polyurethane buffer layer.

[0014] The magnetic powder controller includes a ring-shaped magnetic yoke, an excitation coil, and a magnetic powder cavity. The excitation current control range is adjustable from 0 to 5A, the response time is ≤10ms, and it is linked with the tension sensor signal. By dynamically adjusting the friction between the wire and the guide wheel, the tension fluctuation of the wire is ≤±0.1N.

[0015] The wire spool adopts a split structure, including a replaceable aluminum alloy core and a carbon fiber outer frame. The surface of the core is provided with a spiral guide groove with a depth of 0.15mm and a width of 10.1mm, and the groove spacing tolerance is ≤0.005mm. The tooling surface is also provided with a groove that matches the width of the wire.

[0016] The second drive mechanism uses a ball screw transmission assembly for its axial movement mechanism. The ball screw lead is 2mm, and it works with a linear grating ruler to achieve 0.001mm level displacement closed-loop control. The ratio of the axial movement speed to the rotation speed of the spindle can be programmed and adjusted to drive the spindle to move back and forth along the axial direction with an accuracy of 0.01mm.

[0017] The guide wheel assembly is equipped with a laser alignment device at the rear, which includes two sets of orthogonally arranged line laser generators and a CCD image sensor. It monitors the position deviation of the conductor edge in real time and triggers the PLC control system to correct the deviation. The correction response time is ≤50ms.

[0018] The device also includes a constant temperature control system, which includes a PTC heating element and a thermocouple embedded in the guide wheel assembly to maintain the surface temperature of the guide wheel at 25±0.5℃ to prevent the coating on the surface of the sheet wire from cracking due to cold brittleness.

[0019] The photoelectric encoder is an absolute multi-turn encoder with a resolution of 0.001°. It is linked with the PLC control system to calculate the winding length error. When the cumulative error exceeds 0.1mm, it automatically triggers a stop calibration program. The photoelectric encoder is still linked with the first drive mechanism to monitor the winding length and number of layers in real time.

[0020] The beneficial effects of this invention are as follows: by using long strip winding to reduce the number of joints and by achieving better error control through precise control, the compactness, magnetic field uniformity and stability of the magnet can be effectively improved. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of one embodiment of a superconducting coil winding device proposed in this utility model;

[0022] Figure 2 This is a schematic diagram of one embodiment of a superconducting coil winding device proposed in this utility model. Detailed Implementation

[0023] Reference Figure 1-2 This utility model proposes a superconducting coil winding device for winding a sheet-like wire 1 onto a wire spool 2 to form a superconducting coil, comprising:

[0024] The base 3 is equipped with a main shaft, a first drive mechanism 4, and a second drive mechanism 5. The main shaft is rotatably mounted on the base 3. The base 3 is a whole concept and can be understood as a mounting body for other related structures. Its shape and included components are not entirely limited by the semantics of the term itself, but are related to the existing technology required to actually implement the solution.

[0025] It also includes a first drive mechanism 4, which includes a servo motor and a linkage gear set. The linkage gear set is connected between the first drive mechanism 4 and the main shaft to drive the main shaft to rotate around the axis. A screw spool 2 can be installed on the main shaft. The screw spool 2 installed on the main shaft 2 is detachable.

[0026] It also includes a second drive mechanism 5, which includes a ball screw transmission assembly and a linear encoder, for driving the spindle to move back and forth along the axial direction with an accuracy of 0.01mm. In one implementation, the second drive mechanism 5 can drive the first drive mechanism 4 connected to the spindle to move synchronously together while driving the spindle.

[0027] It also includes a wire feeding wheel 6, which is mounted on the base 3. The wire feeding wheel 6 originally has a wire 1 on it, and the wire 1 is released during the winding process of the wire feeding wheel 6.

[0028] The sheet-like conductor 1 has a width of 10mm ± 0.05mm and a thickness of 0.1mm ± 0.005mm. The substrate is copper-based and the surface is coated with multiple conductive coatings with a resistivity lower than that of copper.

[0029] It also includes a guide wheel assembly, which includes multiple guide wheels 7 arranged parallel to the feed wheel 6. The guide wheel assembly is used to guide the wire 1 released by the feed wheel 6 to the wire spool 2.

[0030] It also includes a tension sensor 8, which is located between the wire feeding reel 6 and the guide wheel assembly. The tension sensor 8 is used to detect the tension of the wire 1 in real time.

[0031] It also includes a magnetic powder controller 9, which is installed on the shaft of the guide wheel assembly. The magnetic powder controller 9 dynamically controls the friction between the wire 1 and the guide wheel 7 by adjusting the excitation current.

[0032] It also includes a photoelectric encoder 10, which is linked to the first drive mechanism 4. The photoelectric encoder 10 is used to monitor the winding length and the number of winding layers on the silk spool 2 in real time.

[0033] It also includes a PLC control system 11, which is electrically connected to the first drive mechanism 4, the second drive mechanism 5, the tension sensor 8, the magnetic powder controller 9, and the photoelectric encoder 10. The PLC control system 11 is configured to adjust the excitation current of the magnetic powder controller 9 based on the tension feedback signal, and control the output of the first drive mechanism 4 and the second drive mechanism 5 through a displacement compensation algorithm so that the ratio of the axial movement speed to the rotational speed of the spindle is such that the winding line speed is ≤0.5m / s and the interlayer misalignment is ≤0.02mm.

[0034] Furthermore, the guide wheel assembly includes four ceramic guide wheels 7, the spacing between each guide wheel 7 is adjusted by an electric push rod with an adjustment accuracy of ±0.01mm, and the wheel surface is provided with a V-shaped guide groove with a width of 12mm. The guide groove is embedded with a PTFE wear-resistant liner, and the surface of each pair of guide wheels 7 is covered with a polyurethane buffer layer. This not only prevents damage to the side of the sheet wire 1, but also prevents damage to the accuracy of guiding the wire 1. At the same time, the presence of the polyurethane buffer layer can also prevent the substrate of the sheet wire 1 from being scratched and generating burrs due to friction with the guide wheel 7, which would cause the coating to be penetrated during later use.

[0035] Furthermore, the magnetic powder controller 9 includes an annular magnetic yoke, an excitation coil, and a magnetic powder cavity. The excitation current control range is adjustable from 0 to 5A, the response time is ≤10ms, and it is linked with the tension sensor 8. By dynamically adjusting the friction between the wire 1 and the guide wheel 7, the tension fluctuation of the wire 1 is ≤±0.1N. The friction between the guide wheel 7 and the wire 1 is affected by the tension. By adjusting the friction between the wire 1 and the guide wheel 7, the tension of the wire 1 can be adjusted in direction, thereby preventing the coating of the wire 1 from being damaged during the winding process.

[0036] Furthermore, the wire spool 2 adopts a split structure, including a replaceable aluminum alloy core and a carbon fiber outer frame. The surface of the core is provided with a spiral guide groove with a depth of 0.15mm and a width of 10.1mm, and the groove spacing tolerance is ≤0.005mm. The tooling surface is still provided with a groove that matches the width of the wire 1, which makes the wire 1 less likely to shift after winding, and makes it more compact and precise.

[0037] Furthermore, the axial movement mechanism of the second drive mechanism 5 adopts a ball screw transmission assembly with a lead of 2mm. It is used in conjunction with a linear grating ruler to achieve 0.001mm level displacement closed-loop control. The speed ratio between the axial movement speed and the rotation speed of the spindle can be programmably adjusted to drive the spindle to move back and forth along the axial direction with an accuracy of 0.01mm.

[0038] Furthermore, a laser alignment device is provided behind the guide wheel assembly, including two sets of orthogonally arranged line laser generators and a CCD image sensor, which monitors the edge position deviation of the guide wire 1 in real time and triggers the PLC control system to correct the deviation, with a correction response time of ≤50ms.

[0039] Furthermore, the device also includes a constant temperature control system, comprising a PTC heating element and a thermocouple embedded in the guide wheel 7 in the guide wheel assembly, to maintain the surface temperature of the guide wheel 7 at 25±0.5℃ to prevent the surface coating of the sheet wire 1 from cracking due to cold brittleness.

[0040] Furthermore, the photoelectric encoder 10 is an absolute multi-turn encoder with a resolution of 0.001°. It is linked with the PLC control system 11 to calculate the winding length error. When the cumulative error exceeds 0.1mm, it automatically triggers a stop calibration program. The photoelectric encoder 10 is still linked with the first drive mechanism 4 to monitor the winding length and number of layers in real time.

[0041] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A superconducting coil winding device for winding sheet-like wires (1) onto a wire spool (2) to form a superconducting coil, characterized in that, include: A base (3) on which a main shaft, a first drive mechanism (4), and a second drive mechanism (5) are mounted; The first drive mechanism (4) includes a servo motor and a linkage gear set, which is used to drive the spindle to rotate around the axis. A screw (2) can be installed on the spindle. The second drive mechanism (5) includes a ball screw transmission assembly and a linear grating ruler, used to drive the main shaft to move back and forth along the axial direction with an accuracy of 0.01mm. A wire release reel (6) is mounted on a base (3) for releasing a wire (1). The width of the sheet wire (1) is 10mm ± 0.05mm and the thickness is 0.1mm ± 0.005mm. The base is copper and the surface is coated with multiple conductive coatings with a resistivity lower than that of copper. The guide wheel assembly includes multiple guide wheels (7) arranged parallel to the feed wheel (6) and is used to guide the wire (1) released by the feed wheel (6) to the wire spool (2); Tension sensor (8) is installed between the wire feeding reel (6) and the guide wheel assembly to detect the tension of the wire (1) in real time; The magnetic powder controller (9) is installed at the shaft of the guide wheel assembly and dynamically controls the friction between the conductor (1) and the guide wheel (7) by adjusting the excitation current; The photoelectric encoder (10) is linked with the first drive mechanism (4) to monitor the winding length and the number of winding layers on the silk reel (2) in real time. The PLC control system (11) is electrically connected to the first drive mechanism (4), the second drive mechanism (5), the tension sensor (8), the magnetic powder controller (9), and the photoelectric encoder (10). It is configured to adjust the excitation current of the magnetic powder controller (9) based on the tension feedback signal, and control the speed ratio of the axial movement speed and rotation speed of the spindle through the displacement compensation algorithm, so that the winding line speed is ≤0.5m / s and the interlayer misalignment is ≤0.02mm.

2. The superconducting coil winding device according to claim 1, characterized in that, The guide wheel assembly includes four ceramic guide wheels (7). The spacing between each guide wheel (7) is adjusted by an electric push rod with an adjustment accuracy of ±0.01mm. The wheel surface is provided with a V-shaped guide groove with a width of 12mm. The guide groove is embedded with a PTFE wear-resistant pad. The surface of each pair of guide wheels (7) is covered with a polyurethane buffer layer.

3. The superconducting coil winding device according to claim 1, characterized in that, The magnetic powder controller includes an annular magnetic yoke, an excitation coil and a magnetic powder cavity. The excitation current control range is adjustable from 0 to 5A, the response time is ≤10ms, and it is linked with the tension sensor (8) signal. By dynamically adjusting the friction between the wire (1) and the guide wheel (7), the tension fluctuation of the wire (1) is ≤±0.1N.

4. The superconducting coil winding device according to claim 1, characterized in that, The wire spool (2) adopts a split structure, including a replaceable aluminum alloy core and a carbon fiber outer frame. The surface of the core is provided with a spiral guide groove with a depth of 0.15 mm and a width of 10.1 mm. The groove spacing tolerance is ≤0.005 mm. The tooling surface is still provided with a groove that matches the width of the wire (1).

5. The superconducting coil winding device according to claim 1, characterized in that, The axial movement mechanism of the second drive mechanism (5) adopts a ball screw transmission assembly with a lead of 2mm. It is used in conjunction with a linear grating ruler to achieve 0.001mm level displacement closed-loop control. The ratio of the axial movement speed to the rotation speed of the spindle can be programmed and adjusted to drive the spindle to move back and forth along the axial direction with an accuracy of 0.01mm.

6. The superconducting coil winding device according to claim 1, characterized in that, The guide wheel assembly is equipped with a laser alignment device, which includes two sets of orthogonally arranged line laser generators and CCD image sensors. It monitors the edge position deviation of the guide wire (1) in real time and triggers the PLC control system to correct the deviation. The correction response time is ≤50ms.

7. The superconducting coil winding device according to claim 1, characterized in that, The device also includes a constant temperature control system, which includes a PTC heating element and a thermocouple embedded in the guide wheel (7) of the guide wheel assembly, to maintain the surface temperature of the guide wheel (7) at 25±0.5℃ to prevent the surface coating of the sheet wire (1) from cracking due to cold brittleness.

8. The superconducting coil winding device according to claim 1, characterized in that, The photoelectric encoder (10) is an absolute multi-turn encoder with a resolution of 0.001°. It is linked with the PLC control system (11) to calculate the winding length error. When the cumulative error exceeds 0.1mm, the shutdown calibration program is automatically triggered. The photoelectric encoder (10) is still linked with the first drive mechanism (4) to monitor the winding length and number of layers in real time.

Images