Automatic winding machine for low voltage coil of transformer
By using a laser beam sensor and locking mechanism in the automatic low-voltage coil winding machine for transformers, the safety hazard caused by accidental human contact has been solved, and safe and reliable automated winding processing has been achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SHANGHAI TONGLI ELECTRICIAN EQUIP FACTORY
- Filing Date
- 2025-06-23
- Publication Date
- 2026-06-16
AI Technical Summary
During the processing of low-voltage coils in existing transformers using automatic winding machines, personnel frequently need to apply insulating materials, resulting in extremely small distances between the equipment and personnel. This makes them susceptible to mechanical injury from accidental contact with external force, which could lead to high-speed rotational impact.
By employing a laser beam sensor and locking mechanism, the device detects the position of personnel and blocks the transmission of laser signals to lock the control terminal, preventing accidental activation and ensuring safety.
It effectively prevents mechanical injuries caused by accidental contact with external forces, ensures the safety of workers, reduces safety hazards, and improves operational safety.
Smart Images

Figure CN224366664U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of transformer low-voltage coil processing technology, specifically relating to an automatic winding machine for transformer low-voltage coils. Background Technology
[0002] The automatic winding machine for low-voltage transformer coils is an automated device specifically designed for winding low-voltage transformer coils. Its core function is to complete the manufacturing of low-voltage coils through high-precision automatic winding and coiling technology. It is widely used in power, electronics and industrial automation fields, providing a strong guarantee for improving production efficiency and product quality.
[0003] Currently, during the processing of low-voltage transformer coils using automatic winding machines, personnel must pause the process at regular intervals after a certain winding length. They then approach the winding end of the machine to apply insulating material to the outer surface of the formed coil. Finally, the machine is reopened, and the automatic winding process continues, repeating this operation to complete the process. During this process, because personnel directly hold the insulating material and apply it to the surface of the formed coil, the distance between the machine and the personnel is extremely small. If the control terminal of the machine is accidentally activated by external force, the winding end of the machine may suddenly start rotating at high speed, which could easily cause the low-voltage transformer coil to rotate synchronously and directly impact the operator, resulting in mechanical injury and posing a significant safety hazard. Utility Model Content
[0004] The technical problem this invention aims to solve is to overcome existing defects and provide an automatic winding machine for low-voltage transformer coils. This addresses the issue raised in the background section where, during the processing of low-voltage transformer coils using an automatic winding machine, personnel must pause the process at regular intervals after a certain winding length. They then approach the winding end of the machine to apply insulating material to the outer surface of the formed coil, and finally reopen the machine to continue the automatic winding process. This process is repeated until completion. During this process, because personnel directly hold the insulating material and apply it to the surface of the formed coil, the distance between the machine and the personnel is extremely small. If the control terminal of the machine is accidentally activated by external force, the winding end of the machine may suddenly start rotating at high speed, easily causing the low-voltage transformer coil to rotate synchronously and directly impact the operator, resulting in mechanical injury and posing a significant safety hazard.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic winding and coiling machine for low-voltage transformer coils, comprising a main body and a locking mechanism located on one side of the main body. When a person blocks the transmission of laser signals, the mechanism determines that the person is too close to the device, thereby locking the control end of the device to prevent accidental activation of the device due to external force, thus ensuring the safety of the person. The locking mechanism includes positioning screws threadedly connected to one side of the main frame and symmetrically arranged. A sliding arm is movably connected to the outer side of the positioning screw through a limiting groove. Limiting strips are slidably connected to both sides of the sliding arm. The main frame is fixedly connected to one side of the limiting strip. A foot pad is fixedly connected to one side of the sliding arm. A lifting screw is threadedly connected to the inner side of the foot pad. A base plate is rotatably connected to the outer side of the bottom end of the lifting screw. A laser beam sensor is fixedly connected to the bottom of the base plate. The laser beam sensor is electrically connected to the electrical control cabinet. Adjacent laser beam sensors are fixedly connected to each other.
[0006] Preferably, the main body mechanism includes a base plate, a drive box fixedly connected to one side of the top of the base plate, a control panel fixedly connected to one side of the top of the drive box, an electrical control cabinet fixedly connected to one side of the drive box, a main frame fixedly connected to the other side of the top of the base plate, feeding rollers symmetrically arranged on one side of the main frame, a top frame fixedly connected to the top of the main frame, a motor fixedly connected to one side of the top frame, a drive screw fixedly connected to the output end of the motor, a top frame rotatably connected to the outer sides of both ends of the drive screw, a slider threadedly connected to the outer side of the drive screw, two guide rails symmetrically arranged at the bottom of the slider, a top frame fixedly connected to the bottom of the guide rails, several adjusting screws threadedly connected to the top of the slider, a guide arm threadedly connected to one side of the adjusting screw, a discharge wheel rotatably connected to one side of the guide arm, two discharge wheels symmetrically arranged, a winding roller arranged between the drive box and the main frame, and the drive box, control panel, and motor are all electrically connected to the electrical control cabinet.
[0007] Preferably, a knob is fixedly connected to the top of the lifting screw, and a foot pad is threadedly connected to the outside of the lifting screw.
[0008] Preferably, a spring is movably connected to the outer side of the top end of the lifting screw, and the spring is located between the knob and the foot pad.
[0009] Preferably, a sliding rod is fixedly connected to the top of the substrate, and several sliding rods are symmetrically arranged, with foot pads slidably connected to the outer side of the sliding rods.
[0010] Preferably, a washer is movably connected to the outer side of one end of the positioning screw, and the washer is located on one side of the sliding arm.
[0011] Preferably, a scale is fixedly connected to one side of the limiting strip, and a sliding arm is slidably connected to one side of the limiting strip.
[0012] Preferably, a guide bar is slidably connected to the inner side of the limiting bar, and a sliding arm is fixedly connected to one side of the guide bar.
[0013] Compared with the prior art, this utility model provides an automatic winding machine for the low-voltage coil of a transformer, which has the following advantages:
[0014] 1. This utility model uses a laser beam sensor to adjust the positioning screws counterclockwise based on the operator's standing position during operation. This reduces the pressure on the sliding arm from the gasket side, releasing the restriction on the horizontal position of the sliding arm. The outer wall of the grip slides the sliding arm through the U-shaped groove within the limiting strip to the desired position. Rotating the positioning screws clockwise increases the pressure on the outer wall of the sliding arm from the gasket side, thus fixing the horizontal position of the sliding arm. The operator can then directly squeeze the knob according to their vertical operating needs. Then, rotate each lifting screw inside the foot pad to move the laser beam sensor to the required height and correct the height difference between the laser beam sensors to ensure that the sliding arms are in a beam-to-beam state, thus ensuring the stability of the laser signal between the sliding arms. Install the transformer low-voltage coil frame on the outer wall of the winding roller, then install the raw material drum on the outer wall of the feeding roller, and pass the wire end from the discharge wheel to the outside of the transformer low-voltage coil frame on the outer wall of the winding roller. Open the drive box and motor through the electrical control cabinet to rotate the winding roller and move the slider. The system automatically winds and lays the cable. Once the cable is wound to the required length, the device is paused via the control panel. The operator then manually applies insulating material to the outer wall of the formed coil. During this process, the operator is positioned between the two laser beam sensors, blocking the laser signals emitted between them. The laser beam sensors then send information back to the control cabinet, which in turn blocks the electrical connection with the control panel. Even if the control panel is accidentally touched, it cannot send a signal to the control cabinet, preventing the drive box and motor from activating and driving the winding rollers and sliders. This ensures the operator is not injured. After the operator finishes work and moves away from the device, the laser beam sensors regain signal transmission, and the system sends information back to the control cabinet, restoring communication between them. The control cabinet can then restart the device via the control panel to continue operation. This system effectively reduces the risk of accidental activation of the device due to personnel being close to it, thus ensuring the safety of the operation.
[0015] 2. This utility model, by setting a knob, can effectively and conveniently allow personnel to directly pinch and rotate the lifting screw without the need for external tools;
[0016] 3. By incorporating a spring to support the bottom of the knob in the opposite direction, this utility model effectively reduces the loosening of the limiting strip at the bottom of the knob during long-term use.
[0017] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a scientific and reasonable structure, is safe and convenient to use, and provides great help to people. Attached Figure Description
[0018] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:
[0019] Figure 1 This is an isometric structural diagram of an automatic winding machine for low-voltage transformer coils proposed in this utility model.
[0020] Figure 2 This is an exploded structural diagram of an automatic winding machine for low-voltage transformer coils proposed in this utility model.
[0021] Figure 3 This is an isometric structural diagram of the locking mechanism of an automatic winding machine for low-voltage transformer coils proposed in this utility model.
[0022] Figure 4 for Figure 3 Enlarged structural diagram at point A;
[0023] In the diagram: Main body 1, base plate 101, drive box 102, control panel 103, electrical control cabinet 104, main frame 105, feeding roller 106, top frame 107, motor 108, drive screw 109, slider 110, guide rail 111, adjusting screw 112, guide arm 113, discharge wheel 114, winding roller 115, locking mechanism 2, positioning screw 201, limit groove 202, sliding arm 203, limit strip 204, foot pad 205, lifting screw 206, bottom plate 207, laser beam sensor 208, knob 3, spring 4, slide bar 5, pad 6, scale 7, guide strip 8. 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] Please see Figures 1-4This utility model provides a technical solution: an automatic winding machine for low-voltage transformer coils, including a main body mechanism 1 and a locking mechanism 2 located on one side of the main body mechanism 1. When a person blocks the transmission of laser signals, the control terminal of the device is locked to prevent accidental activation of the device due to external force, thus ensuring the safety of the personnel. The locking mechanism 2 includes positioning screws 201 symmetrically arranged on one side of the main frame 105, threadedly connected to the outer side of the positioning screws 201 through a limiting groove 202. A sliding arm 203 is movably connected to the outer side of the positioning screws 201 through a limiting groove 202. Limiting strips 204 are slidably connected to both sides of the sliding arm 203. The main frame 105 is fixedly connected to one side of the limiting strip 204, and a foot pad 205 is fixedly connected to one side of the sliding arm 203. A lifting mechanism is threadedly connected to the inner side of the foot pad 205. The screw 206 has a base plate 207 rotatably connected to the outer side of its bottom end. A laser beam sensor 208 is fixedly connected to the bottom of the base plate 207. The laser beam sensor 208 is electrically connected to the electrical control cabinet 104. Adjacent laser beam sensors 208 are fixedly connected to each other with a 209. Depending on the operator's standing position during operation, the positioning screws 201 are rotated counterclockwise to loosen them, reducing the pressure on the sliding arm 203 from the side of the gasket 6, thus releasing the restriction on the horizontal position of the sliding arm 203. Then, the outer wall of the 209 is held within the limit strip 204 and slides the sliding arm 203 to the desired position via the U-shaped limit groove 202. The positioning screw 201 is then rotated clockwise to increase the pressure on the outer wall of the sliding arm 203 from the side of the gasket 6, thus fixing the sliding arm 203 in place. The horizontal position of arm 203 is determined by the operator's vertical height requirements. By directly squeezing knob 3 and rotating each lifting screw 206 inside the foot pad 205, the laser beam sensor 208 is moved to the required height, and the height difference between the laser beam sensors 208 is corrected, ensuring the sliding arms 203 are in a beam-to-beam state and guaranteeing the stability of the laser signal between the sliding arms 203. The transformer low-voltage coil frame is installed on the outer wall of the winding roller 115, and then the raw material drum is installed on the outer wall of the feeding roller 106. The wire end is passed from the discharge wheel 114 to the outside of the transformer low-voltage coil frame on the outer wall of the winding roller 115. The drive box 102 and motor 108 are opened via the control cabinet 104, causing the winding roller 115 to rotate and pass through the slider 11. The movement of the coil 103 enables automatic cable laying and winding. Once the cable is wound to the desired extent, the control panel 103 pauses the process. The operator then manually applies insulating material to the outer wall of the formed coil. During this process, the operator is positioned between the two laser beam sensors 208, blocking the laser signals emitted between them. The laser beam sensors 208 then send information back to the control cabinet 104, which in turn blocks the electrical connection with the control panel 103. Even if the control panel 103 is accidentally touched by external force, it cannot send a signal to the control cabinet 104, thus preventing the activation of the drive box 102 and motor 108 to drive the winding roller 115 to rotate and the sliders 110 to move. This ensures the operator is not injured by machinery.Simultaneously, after personnel complete their work and move away from the device, the signal between the laser beam sensors 208 is restored without being interrupted by the human body, and information is also fed back to the electrical control cabinet 104, restoring the communication connection between the electrical control cabinet 104 and the control panel 103. The device can then be restarted via the control panel 103 to continue operation.
[0026] In this utility model, preferably, the main body mechanism 1 includes a base plate 101. A drive box 102 is fixedly connected to one side of the top of the base plate 101. A control panel 103 is fixedly connected to one side of the top of the drive box 102. An electrical control cabinet 104 is fixedly connected to one side of the drive box 102. A main frame 105 is fixedly connected to the other side of the top of the base plate 101. Feeding rollers 106 are symmetrically arranged on one side of the main frame 105. A top frame 107 is fixedly connected to the top of the main frame 105. A motor 108 is fixedly connected to one side of the top frame 107. A drive screw 109 is fixedly connected to the output end of the motor 108. The top frame 107 is rotatably connected to the outer sides of both ends of the drive screw 109. A slider 110 is threadedly connected to the outer side of the drive screw 109. A guide rail 111 is slidably connected to the bottom of the slider 110. Two guide rails 111 are symmetrically arranged. The top frame 107 is fixedly connected to the bottom of the guide rails 111. Several adjustment levers are threadedly connected to the top of the slider 110. The adjusting screw 112 is threadedly connected to a guide arm 113 on one side, and a discharge wheel 114 is rotatably connected to one side of the guide arm 113. Two discharge wheels 114 are symmetrically arranged. A winding roller 115 is arranged between the drive box 102 and the main frame 105. The drive box 102, control panel 103 and motor 108 are all electrically connected to the electrical control cabinet 104. The transformer low-voltage coil frame is installed on the outer wall of the winding roller 115, and then the raw material roll is installed on the outer wall of the feeding roller 106. The wire end is passed from the discharge wheel 114 to the outside of the transformer low-voltage coil frame on the outer wall of the winding roller 115. The drive box 102 and motor 108 are opened through the electrical control cabinet 104 to make the winding roller 115 rotate and automatically lay and wind the wire by the movement of the slider 110. When the cable is wound to the required degree, the control panel 103 is paused, and the operator goes forward to manually paste the insulation material to the outer wall of the formed coil.
[0027] In this utility model, preferably, a knob 3 is fixedly connected to the top of the lifting screw 206, and a foot pad 205 is threadedly connected to the outside of the lifting screw 206, which can effectively facilitate personnel to directly pinch and rotate the lifting screw 206 without the need for external tools.
[0028] In this utility model, preferably, a spring 4 is movably connected to the outer side of the top end of the lifting screw 206. The spring 4 is located between the knob 3 and the foot pad 205. By supporting the bottom of the knob 3 in the opposite direction, the loosening of the limiting strip 204 at the bottom of the knob 3 during long-term use is effectively reduced.
[0029] In this utility model, preferably, a sliding rod 5 is fixedly connected to the top of the bottom plate 207, and several sliding rods 5 are symmetrically arranged. Foot pads 205 are slidably connected to the outside of the sliding rods 5, which can effectively ensure the stability of the position of the bottom plate 207 during lifting and stress.
[0030] In this utility model, preferably, a washer 6 is movably connected to the outer side of one end of the positioning screw 201. The washer 6 is located on one side of the sliding arm 203, which can effectively reduce the loosening range of the positioning screw 201 during use.
[0031] In this utility model, preferably, a ruler 7 is fixedly connected to one side of the limiting strip 204, and a sliding arm 203 is slidably connected to one side of the limiting strip 204, which can effectively identify the sliding stroke and position information of the sliding arm 203.
[0032] In this utility model, preferably, a guide bar 8 is slidably connected to the inner side of the limiting bar 204, and a sliding arm 203 is fixedly connected to one side of the guide bar 8, which can further reduce the amount of sagging generated by the sliding arm 203 during use.
[0033] The working principle and usage process of this utility model are as follows: During use, based on the operator's standing position, rotate counterclockwise and loosen each positioning screw 201 to reduce the pressure of the gasket 6 on the sliding arm 203, thus releasing the restriction on the horizontal position of the sliding arm 203. Then, hold the outer wall of 209 and slide the sliding arm 203 to the desired position through the U-shaped limiting groove 202 within the limiting strip 204. Rotate the positioning screw 201 clockwise to increase the pressure of the gasket 6 on the outer wall of the sliding arm 203, thus fixing the horizontal position of the sliding arm 203. Depending on the operator's vertical work requirements, directly squeeze the knob 3. Then, rotate each lifting screw 206 inside the foot pad 205 to move the laser beam sensor 208 to the required height and correct the height difference between the laser beam sensors 208, so that the sliding arms 203 are in a beam-to-beam state, ensuring the stability of the laser signal between the sliding arms 203. Install the transformer low-voltage coil frame on the outer wall of the winding roller 115, and then install the raw material drum on the outer wall of the feeding roller 106. Pass the wire end from the discharge wheel 114 to the outside of the transformer low-voltage coil frame on the outer wall of the winding roller 115. Open the drive box 102 and motor 108 through the electrical control cabinet 104 to make the winding roller 115 rotate. The cable is automatically laid out and wound via the movement of slider 110. Once the cable is wound to the desired extent, the control panel 103 pauses the process. The operator then manually applies insulating material to the outer wall of the formed coil. During this process, the operator is positioned between the two laser beam sensors 208, blocking the laser signals emitted between them. The laser beam sensors 208 then send information back to the control cabinet 104, which in turn blocks the electrical connection with the control panel 103. Therefore, even if the control panel 103 is accidentally touched by external force, it cannot send a signal to the control cabinet 104, thus preventing [the cable from being wound]. The drive box 102 and motor 108 are activated to drive the winding roller 115 to rotate and move the sliders 110, thereby ensuring that the operator is not injured by machinery. At the same time, after the operator finishes the work and moves away from the device, the signal between the laser beam sensors 208 is restored without being interrupted by the human body, and the information is also fed back to the electrical control cabinet 104, so that the electrical control cabinet 104 restores the communication connection with the control panel 103. The device can be started through the control panel 103 to continue the operation. This can effectively reduce the situation where the control terminal is accidentally touched when the operator is close to the device and the device is started, causing mechanical injury, thus ensuring the safety of the device operation.
[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An automatic winding machine for low-voltage transformer coils, characterized in that: The device includes a main body mechanism (1) and a locking mechanism (2) located on one side of the main body mechanism (1). When the laser signal transmission is blocked by a human body, the device's control terminal is locked to prevent accidental activation of the device due to external force, thus ensuring the safety of the personnel. The locking mechanism (2) includes a positioning screw (201) threadedly connected to one side of the main frame (105) and symmetrically arranged. A sliding arm (203) is movably connected to the outside of the positioning screw (201) through a limiting groove (202). Limiting strips (204) are slidably connected to both sides of the sliding arm (203). The limiting strip (204) is fixedly connected to the main frame (105) on one side, and the sliding arm (203) is fixedly connected to the foot pad (205) on one side. The foot pad (205) is threadedly connected to the inner side of the lifting screw (206). The bottom of the lifting screw (206) is rotatably connected to the outer side of the bottom end of the bottom plate (207). The bottom of the bottom plate (207) is fixedly connected to the laser beam sensor (208). The laser beam sensor (208) is electrically connected to the electrical control cabinet (104). The laser beam sensors (208) are fixedly connected to each other with (209).
2. The automatic winding machine for low-voltage transformer coils according to claim 1, characterized in that: The main body mechanism (1) includes a base plate (101). A drive box (102) is fixedly connected to one side of the top of the base plate (101). A control panel (103) is fixedly connected to one side of the top of the drive box (102). An electrical control cabinet (104) is fixedly connected to one side of the drive box (102). A main frame (105) is fixedly connected to the other side of the top of the base plate (101). Feeding rollers (106) are symmetrically arranged on one side of the main frame (105). A top frame (107) is fixedly connected to the top of the main frame (105). A motor (108) is fixedly connected to one side of the top frame (107). A drive screw (109) is fixedly connected to the output end of the motor (108). The top frame (107) is rotatably connected to the outer sides of both ends of the drive screw (109). A slider (110) is threadedly connected to the outside of the drive screw (109). A guide rail (111) is slidably connected to the bottom of the slider (110). Two guide rails (111) are symmetrically arranged. A top frame (107) is fixedly connected to the bottom of the guide rails (111). Several adjusting screws (112) are threadedly connected to the top of the slider (110). A guide arm (113) is threadedly connected to one side of the adjusting screw (112). A discharge wheel (114) is rotatably connected to one side of the guide arm (113). Two discharge wheels (114) are symmetrically arranged. A winding roller (115) is arranged between the drive box (102) and the main frame (105). The drive box (102), control panel (103), and motor (108) are all electrically connected to the electrical control cabinet (104).
3. The automatic winding machine for low-voltage transformer coils according to claim 1, characterized in that: A knob (3) is fixedly connected to the top of the lifting screw (206), and a foot pad (205) is threadedly connected to the outside of the lifting screw (206).
4. An automatic winding machine for low-voltage transformer coils according to claim 3, characterized in that: A spring (4) is movably connected to the outer side of the top end of the lifting screw (206), and the spring (4) is located between the knob (3) and the foot pad (205).
5. An automatic winding machine for low-voltage transformer coils according to claim 1, characterized in that: The top of the substrate (207) is fixedly connected to a slide rod (5), and several slide rods (5) are symmetrically arranged. A foot pad (205) is slidably connected to the outside of the slide rod (5).
6. An automatic winding machine for low-voltage transformer coils according to claim 1, characterized in that: A washer (6) is movably connected to the outer side of one end of the positioning screw (201), and the washer (6) is located on one side of the sliding arm (203).
7. An automatic winding machine for low-voltage transformer coils according to claim 1, characterized in that: A ruler (7) is fixedly connected to one side of the limiting strip (204), and a sliding arm (203) is slidably connected to one side of the limiting strip (204).
8. An automatic winding machine for low-voltage transformer coils according to claim 1, characterized in that: The guide bar (8) is slidably connected to the inner side of the limiting bar (204), and a sliding arm (203) is fixedly connected to one side of the guide bar (8).