A centering and unwinding machine for transformer magnet wire

Abstract

The utility model belongs to transformer manufacturing equipment technical field especially is a kind of centering pay-off machine of transformer electromagnetic wire, including base and centering adjusting mechanism, the two sides of centering adjusting mechanism on base are sequentially arranged with pay-off roll and traction mechanism along electromagnetic wire pay-off direction, guide assembly includes the two guide wheels of symmetrical arrangement, the wheel groove of two guide wheels forms electromagnetic wire guide channel, the guide rail of linear drive component is arranged on base in parallel and along perpendicular electromagnetic wire pay-off direction arrangement, the detection end of laser displacement sensor of displacement detection component is towards the surface of electromagnetic wire.The utility model, by laser displacement sensor real-time detection and servo motor closed-loop control, high accuracy is centered, need not manual intervention, can real-time response in the deviation of pay-off process, avoid shutdown adjustment, production efficiency is high, adopts guide rail-screw drive structure, and the adjusting process is stable without jam, preset parameter, can be adapted to different specifications electromagnetic wire, need not to replace guide assembly.

Description

Technical Field

[0001] This utility model relates to the field of transformer manufacturing equipment technology, specifically a transformer electromagnetic wire centering and laying machine. Background Technology

[0002] In the transformer winding process, the quality of the electromagnetic wire laid directly affects the tightness, flatness, and electrical performance of the winding. Existing electromagnetic wire laying machines generally use fixed guide wheels or manually adjustable guide mechanisms for centering, which has the following drawbacks: manual adjustment relies on operator experience and cannot respond in real time to deviations during the electromagnetic wire laying process, easily causing the wire to deviate from the preset path and resulting in interlayer misalignment of the winding; when changing to different specifications of electromagnetic wire or when the laying tension changes, the machine must be stopped and the guide wheel position manually adjusted, affecting production efficiency.

[0003] While some semi-automatic alignment devices exist in the existing technology, most of them use mechanical triggering adjustment, which has a slow response and a limited adjustment range, and cannot meet the production requirements of high-precision transformer windings. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a transformer electromagnetic wire centering and laying machine, which realizes real-time, automatic, and high-precision centering during the electromagnetic wire laying process. It solves the problem that mechanical triggering adjustment has a lagging response and limited adjustment range, which cannot meet the production requirements of high-precision transformer windings.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] A transformer electromagnetic wire centering and feeding machine includes a base and a centering adjustment mechanism. On the base, feeding rollers and a traction mechanism are arranged sequentially on both sides of the centering adjustment mechanism along the electromagnetic wire feeding direction. The centering adjustment mechanism includes a guide assembly, a linear drive assembly, a displacement detection assembly, and a controller.

[0009] The guide assembly includes two symmetrically arranged guide wheels and a wheel frame. The guide wheels are rotatably connected to the wheel frame via a wheel axle. The grooves of the two guide wheels form an electromagnetic wire guide channel. A slider is provided on the wheel frame.

[0010] The guide wheel has a polyurethane buffer layer inside its groove. The thickness of the polyurethane buffer layer is -mm. This layer is used to reduce the rigid friction between the electromagnetic wire and the groove and to protect the insulation layer.

[0011] The slider is provided with a sliding sleeve that matches the guide rail, and also with a threaded seat that matches the lead screw;

[0012] Limit blocks are provided at both ends of the guide rail of the linear drive assembly. Rubber buffer pads are attached to the surface of the limit blocks to prevent mechanical collision caused by excessive movement of the wheel frame.

[0013] The linear drive assembly includes two parallel guide rails on the base and a servo motor. The guide rails are arranged perpendicular to the direction of electromagnetic wire laying. The slider on the wheel frame slides with the guide rails. The lead screw connected to the output end of the servo motor is threadedly connected to the slider. The servo motor drives the wheel frame to reciprocate along the guide rails.

[0014] Both ends of the guide rail are fixedly connected to the bracket on the upper part of the base. The lead screw is rotatably connected to the bracket through the bearing seat. One end of the lead screw passes through the bracket at the corresponding position and is connected to the servo motor installed on the bracket.

[0015] The displacement detection assembly includes two laser displacement sensors, which are fixedly connected to the outside of the wheel frame via a connecting bracket. The detection end of the laser displacement sensor faces the surface of the electromagnetic wire and is used to collect the offset between the electromagnetic wire and the center of the wheel groove on the guide wheel in real time.

[0016] The controller is electrically connected to the laser displacement sensor and the servo motor respectively. It receives displacement detection signals and outputs drive commands to control the two servo motors to move synchronously in opposite directions. It adjusts the distance between the guide wheels to correct the position of the electromagnetic wire. The controller integrates a touch screen display, which can preset the centering reference parameters of electromagnetic wires of different specifications and display the current centering deviation value and adjustment status in real time.

[0017] (III) Beneficial Effects

[0018] Compared with the prior art, this utility model provides a transformer electromagnetic wire centering and feeding machine, which has the following beneficial effects:

[0019] This invention utilizes a laser displacement sensor for real-time detection and a servo motor for closed-loop control, achieving high centering accuracy without manual intervention. It can respond to deviations during the wire feeding process in real time, avoiding downtime for adjustments and resulting in high production efficiency. The guide rail-screw transmission structure ensures smooth and uninterrupted adjustment. Preset parameters allow it to adapt to different specifications of electromagnetic wires without the need to replace guide components, making it widely applicable and easy to use. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model;

[0021] Figure 2 This is a schematic diagram of the guide component in this utility model;

[0022] Figure 3 This is a schematic diagram of the displacement detection component in this utility model.

[0023] In the diagram: 1. Base; 101. Bracket; 2. Guide assembly; 201. Guide wheel; 202. Wheel frame; 203. Slider; 204. Sliding sleeve; 205. Threaded seat; 3. Linear drive assembly; 301. Guide rail; 302. Lead screw; 303. Limit block; 304. Servo motor; 4. Displacement detection assembly; 401. Laser displacement sensor; 402. Connecting frame; 5. Controller. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Example

[0026] like Figure 1 , Figure 2 and Figure 3 As shown, one embodiment of this utility model proposes a transformer electromagnetic wire centering and feeding machine, which includes a base 1 and a centering adjustment mechanism. On the base 1, feeding rollers and a traction mechanism are arranged sequentially on both sides of the centering adjustment mechanism along the electromagnetic wire feeding direction. The centering adjustment mechanism includes a guide component 2, a linear drive component 3, a displacement detection component 4, and a controller 5.

[0027] The guide assembly 2 includes two guide wheels 201 arranged symmetrically and a wheel frame 202. The guide wheels 201 are rotatably connected to the wheel frame 202 through a wheel axle. The grooves of the two guide wheels 201 form an electromagnetic wire guide channel. A slider 203 is provided on the wheel frame 202.

[0028] Among them, the inner side of the groove of the guide wheel 201 is provided with a polyurethane buffer layer with a thickness of 1-2mm, which is used to reduce the rigid friction between the electromagnetic wire and the groove and protect the insulation layer.

[0029] The slider 203 is provided with a sliding sleeve 204 that cooperates with the guide rail 301, and a threaded seat 205 that cooperates with the lead screw 302.

[0030] The linear drive assembly 3 includes two parallel guide rails 301 arranged on the base 1 and a servo motor 304. The guide rails 301 are arranged perpendicular to the direction of electromagnetic wire laying. The slider 203 on the wheel frame 202 slides with the guide rails 301. The lead screw 302 connected to the output end of the servo motor 304 is threadedly connected to the slider 203. The servo motor 304 drives the wheel frame 202 to reciprocate along the guide rails 301.

[0031] Among them, the guide rail 301 of the linear drive assembly 3 is provided with limit blocks 303 at both ends. The surface of the limit block 303 is pasted with a rubber buffer pad. The limit block 303 is made of nylon and the thickness of the rubber buffer pad is 5mm to prevent the wheel frame 202 from moving beyond its travel range and causing mechanical collision.

[0032] Both ends of the guide rail 301 are fixedly connected to the bracket 101 on the upper part of the base 1. The lead screw 302 is rotatably connected to the bracket 101 through the bearing seat. One end of the lead screw 302 passes through the bracket 101 at the corresponding position and is connected to the servo motor 304 installed on the bracket 101.

[0033] The displacement detection component 4 includes two laser displacement sensors 401. The laser displacement sensors 401 are model KEYENCEIL-1000, with a detection distance of 50mm, a detection accuracy of ±0.05mm, and a sampling frequency of not less than 100Hz. They are fixedly connected to the outside of the wheel frame 202 through the connecting bracket 402. The detection end of the laser displacement sensor 401 faces the surface of the electromagnetic wire and is used to collect the offset between the electromagnetic wire and the center of the wheel groove on the guide wheel 201 in real time.

[0034] The controller 5 is electrically connected to the laser displacement sensor 401 and the servo motor 304 respectively. It receives displacement detection signals and outputs drive commands to control the two servo motors 304 to move synchronously in opposite directions. It adjusts the spacing of the guide wheels 201 to correct the position of the electromagnetic wire. The controller 5 integrates a touch screen display, which can preset the centering reference parameters of electromagnetic wires of different specifications and display the current centering deviation value and adjustment status in real time.

[0035] Among them, controller 5 is a Siemens S7-1200 series PLC. The preset centering deviation threshold of controller 5 is 0.1mm. When the detected deviation exceeds the threshold, controller 5 outputs a PWM signal to control the servo motor 304 to rotate. The servo motor 304 drives the wheel frame 202 to adjust at a speed of 5mm / s.

[0036] In actual use, the electromagnetic wire is drawn out from the feed roller and enters the traction mechanism through the channel formed by the grooves of the two guide wheels 201 of the guide assembly 2. After the controller 5 presets the electromagnetic wire specifications and parameters and starts the equipment, the laser displacement sensor 401 detects the offset between the electromagnetic wire and the center of the groove in real time and transmits the detection data to the controller 5. When the offset exceeds the preset threshold, the controller 5 calculates the adjustment amount and sends a drive command to the servo motor 304. The servo motor 304 drives the lead screw 302 to rotate, which drives the wheel frame 202 to move synchronously in the opposite direction along the guide rail 301, adjusting the position of the guide wheel 201 until the electromagnetic wire returns to the reference position, thus achieving dynamic centering.

[0037] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A transformer electromagnetic wire centering and feeding machine, comprising a base (1) and a centering adjustment mechanism, wherein feeding rollers and a traction mechanism are sequentially arranged on both sides of the centering adjustment mechanism along the electromagnetic wire feeding direction on the base (1), and the centering adjustment mechanism comprises a guide assembly (2), a linear drive assembly (3), a displacement detection assembly (4), and a controller (5), characterized in that: The guide assembly (2) includes two guide wheels (201) arranged symmetrically and a wheel frame (202). The guide wheels (201) are rotatably connected to the wheel frame (202) through a wheel axle. The grooves of the two guide wheels (201) form an electromagnetic wire guide channel. A slider (203) is provided on the wheel frame (202). The linear drive assembly (3) includes two parallel guide rails (301) arranged on the base (1) and a servo motor (304). The guide rails (301) are arranged perpendicular to the direction of electromagnetic wire laying. The slider (203) on the wheel frame (202) is slidably engaged with the guide rails (301). The lead screw (302) connected to the output end of the servo motor (304) is threadedly connected to the slider (203). The displacement detection assembly (4) includes two laser displacement sensors (401), which are fixedly connected to the outside of the wheel frame (202) via a connecting frame (402). The detection end of the laser displacement sensor (401) faces the surface of the electromagnetic wire. The controller (5) is electrically connected to the laser displacement sensor (401) and the servo motor (304).

2. The transformer electromagnetic wire centering and unwinding machine according to claim 1, characterized in that: The guide wheel (201) has a polyurethane buffer layer inside its groove, and the thickness of the polyurethane buffer layer is 1-2 mm.

3. The transformer electromagnetic wire centering and unwinding machine according to claim 1, characterized in that: The linear drive assembly (3) has limit blocks (303) at both ends of the guide rail (301), and rubber buffer pads are attached to the surface of the limit blocks (303).

4. The transformer electromagnetic wire centering and unwinding machine according to claim 1, characterized in that: The slider (203) is provided with a sliding sleeve (204) that cooperates with the guide rail (301), and also with a threaded seat (205) that cooperates with the lead screw (302).

5. A transformer electromagnetic wire centering and unwinding machine according to claim 4, characterized in that: Both ends of the guide rail (301) are fixedly connected to the bracket (101) on the upper part of the base (1). The lead screw (302) is rotatably connected to the bracket (101) through the bearing seat. One end of the lead screw (302) passes through the bracket (101) at the corresponding position and is connected to the servo motor (304) installed on the bracket (101).

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