Flattening device for transformer coil copper wire
By designing a combination of upper and lower pressing rollers and a guide device, the shape transformation and guidance problems during winding of the transformer coil copper wire are solved, the copper wire is effectively flattened, the contact area and mechanical strength are improved, and the production requirements of the transformer coil are met.
Patent Information
- Application Number
- CN202422914609.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-28
- Publication Date
- 2025-10-10
- Estimated Expiration
- 2034-11-28
AI Technical Summary
In the existing technology, it is difficult to change the copper wire of the transformer coil from a round shape to a flat shape during winding, and there is a lack of effective guiding and extrusion devices, resulting in a small contact area and large gaps, which cannot meet the requirements of mechanical strength and winding convenience.
A flattening device including an upper pressing roller, a lower pressing roller, a transmission device and a guide device is designed. The copper wire is driven by the transmission device to pass between the upper and lower pressing rollers. The copper wire is flattened by utilizing the adjustable height of the lower pressing roller and the guidance of the guide hook. The guidance and extrusion effect of the copper wire are ensured by the cooperation of the guide frame and the spring.
It achieves effective flattening of the copper wire, increases the contact area, reduces the gap, improves the mechanical strength and the convenience of winding, and meets the production requirements of transformer coils.
Smart Images
Figure CN223427355U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of coils, in particular to the technical field of transformer copper wire winding, and specifically refers to a flattening device for transformer coil copper wires. Background Art
[0002] Transformer coils are generally classified into two types: layer and pancake. Layer coils are those where the turns are arranged in layers along the axial direction and wound continuously. Each layer is cylindrical, ensuring good mechanical strength, resistance to deformation, and ease of winding. Coils consisting of two layers are called double-layer cylindrical coils; coils consisting of multiple layers are called multi-layer cylindrical coils.
[0003] The transformer coil includes an iron core, and copper plates and copper wires wound on the iron core. When the copper wire is wound, it needs to be flattened so that the cross-section of the copper wire changes from a circle to a flat shape with the top and bottom surfaces being flat and the two side surfaces being arc-shaped. The contact area between the copper wires of this shape is large and the gap is small. In order to meet the above requirements, the copper wire needs to be flattened once. At the same time, since the coil is transferred from above the coil extrusion point to the coil extrusion point, a guide device is also required on the feeding side. Utility Model Content
[0004] In view of the deficiencies in the prior art, the utility model provides a flattening device for transformer coil copper wires, which performs extrusion before winding the copper wires, thereby meeting production requirements.
[0005] The utility model is realized through the following technical scheme: a flattening device for transformer coil copper wire, comprising a box body, an upper pressing roller and a lower pressing roller arranged on the box body and squeezing the copper wire, and a transmission device for driving the copper wire to be transported, wherein the lower pressing roller is connected to a lower base sliding along the height direction, the bottom surface of the lower base is a first inclined surface, the box body is provided with a slider sliding along the inclined direction of the first inclined surface and supporting the lower base, a guide frame is further provided at the rear of the upper pressing roller, the guide frame is hinged with a guide hook located behind the upper pressing roller, a spring is fixed to the guide frame for driving the guide hook to rotate downward, the end surface of the guide hook in contact with the copper wire is a third inclined surface, and the third inclined surface is inclined downward from back to front.
[0006] When the utility model is in use, the copper wire is driven by the transmission device to pass through between the upper pressing roller and the lower pressing roller, and the upper pressing roller and the lower pressing roller squeeze the top surface and the bottom surface of the copper wire, thereby flattening the copper wire. At the same time, by adjusting the sliding position of the slider, the position of the slider supporting the first inclined surface is adjusted, thereby adjusting the height of the lower base on the box body, thereby adjusting the height of the lower pressing roller, and by adjusting the distance between the upper pressing roller and the lower pressing roller, the squeezing strength of the copper wire is adjusted; by setting the spring and the guide hook, the copper wire is pressed downward, thereby guiding the copper wire, and the setting of the third inclined surface also plays a guiding role.
[0007] Preferably, the top surface of the slider is a second inclined surface adapted to the first inclined surface.
[0008] In this preferred solution, the second inclined surface plays a guiding role, making it easy to adjust the height of the lower base by sliding the slider.
[0009] Preferably, the slider is threadedly connected to a lead screw extending along the sliding direction of the slider and axially connected to the box body, and a turning handle is fixed to the lead screw.
[0010] This preferred solution facilitates driving the slider to slide by arranging the lead screw and the turning handle.
[0011] Preferably, the transmission device is located in front of the upper pressure roller, and the transmission device includes a plurality of transmission discs and a motor for driving the transmission discs to rotate. The circumferential surface of the transmission disc is provided with a plurality of annular grooves for the copper wire to pass around.
[0012] In this preferred solution, when in use, the copper wire is wound in the ring groove, and the transmission disc is driven to rotate by the motor, thereby driving the copper wire to be transmitted.
[0013] Preferably, the cross section of the annular groove is tapered. In this preferred solution, when the copper wire is located in the annular groove, the two inclined side surfaces of the annular groove squeeze the copper wire, thereby increasing the friction between the copper wire and the transmission disc and preventing the copper wire from slipping on the transmission disc.
[0014] Preferably, the number of the annular grooves is twice the number of the copper wires. This preferred solution can achieve simultaneous transmission and extrusion of two copper wires by setting the number of annular grooves, and can also achieve two windings of the copper wires on the transmission disk, thereby increasing the friction between the copper wires and the transmission disk and preventing the copper wires from slipping on the transmission disk.
[0015] Preferably, the guide frame is provided with two guide rollers located on both sides of the copper wire and between the guide hook and the upper pressure roller, and the guide rollers extend in the height direction.
[0016] Preferably, the box body is further provided with two guide groups located on both sides of the copper wire extrusion, and the two guide groups are arranged along the copper wire transmission direction. The guide groups include two guide plates located at the upper and lower ends of the copper wire. The box body is also provided with a guide block, and the guide block is provided with a guide hole for the copper wire to pass through. The guide plate is located between the copper wire extrusion point and the guide block.
[0017] This preferred solution restricts the copper wire from bending upward or downward by providing two guide groups, and at the same time provides the copper wire with a guiding effect by providing guide holes.
[0018] The beneficial effects of the utility model are as follows: under the transmission of the transmission device, the copper wire is driven to pass between the upper pressing roller and the lower pressing roller, and the upper pressing roller and the lower pressing roller squeeze the top surface and the bottom surface of the copper wire, thereby flattening the copper wire, and at the same time, by adjusting the sliding position of the slider, the position of the slider supporting the first inclined surface is adjusted, thereby adjusting the height of the lower base on the box body, thereby adjusting the height of the lower pressing roller, and by adjusting the distance between the upper pressing roller and the lower pressing roller, the squeezing strength of the copper wire is adjusted; by the setting of the spring and the guide hook, the copper wire is pressed downward, thereby guiding the copper wire, and at the same time, the setting of the third inclined surface also plays a guiding role; by the setting of the second inclined surface, a guiding role is played, which facilitates the adjustment of the height of the lower base by sliding the slider. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a three-dimensional schematic diagram of the structure of the utility model;
[0020] Figure 2 This is the main view of the structure of the utility model;
[0021] Figure 3 for Figure 2 Cross-sectional view at AA in the middle;
[0022] Figure 4 for Figure 3 Enlarged view of point C in the middle;
[0023] Figure 5 for Figure 2 Enlarged view of point B in the middle;
[0024] Figure 6 This is a top view of the structure of the utility model;
[0025] Figure 7 for Figure 6 Cross-sectional view at DD in the middle;
[0026] Figure 8 for Figure 7 Enlarged view of point E in the middle;
[0027] Figure 9 This is the right side view of the structure of the utility model;
[0028] Figure 10 It is a schematic diagram of the ring groove;
[0029] As shown in the figure:
[0030] 1. Upper pressure roller, 2. Lower pressure roller, 3. Slider, 4. Lower base, 5. Lead screw, 6. Turn handle, 7. Transmission plate, 8. Box, 9. Guide frame, 10. Wire roller, 11. Guide hook, 12. Spring, 13. Guide block, 14. Guide group, 15. First inclined plane, 16. Third inclined plane, 17. Ring groove. DETAILED DESCRIPTION
[0031] In order to clearly illustrate the technical features of this solution, this solution is described below through specific implementation methods.
[0032] Refer to the attached Figure 1-10 The utility model is a flattening device for transformer coil copper wire, comprising a box body 8, an upper pressing roller 1 is connected to the upper axis of the box body 8, a lower pressing roller 2 is provided directly below the upper pressing roller 1, and the copper wire passes between the upper pressing roller 1 and the lower pressing roller 2. The upper pressing roller 1 and the lower pressing roller 2 squeeze the copper wire to meet production needs.
[0033] The lower pressure roller 2 is axially connected to the lower base 4 that slides along the height direction. The box body 8 is provided with two limit blocks located in front and rear of the lower base 4. The bottom surface of the lower base 4 is a first inclined surface 15. The first inclined surface 15 extends obliquely along the axial direction of the upper pressure roller 1. The box body 8 is provided with a slider 3 that slides along the inclined direction of the first inclined surface 15 and supports the lower base 4. The top surface of the slider 3 is a second inclined surface that is adapted to the first inclined surface 15. The slider 3 is threadedly connected to a screw 5 that extends along the sliding direction of the slider 3 and is axially connected to the box body 8. A turning handle 6 is fixed to the screw 5, and the turning handle 6 can also be replaced with a motor.
[0034] The box body 8 is also provided with two guide groups 14 located on both sides of the copper wire extrusion, and the two guide groups 14 are arranged along the copper wire transmission direction. The guide groups 14 include two guide plates located at the upper and lower ends of the copper wire. The box body 8 is also provided with a guide block 13, and the guide block 13 is provided with a guide hole for the copper wire to pass through. The guide plate is located between the copper wire extrusion point and the guide block 13.
[0035] The box body 8 is also provided with a transmission device for conveying copper wire. The transmission device is located in front of the upper pressure roller 1 and the lower pressure roller 2. The transmission device includes three transmission disks and three motors that respectively drive the three transmission disks to rotate. A plurality of annular grooves 17 for the copper wire to pass around are provided on the circumferential surface of the transmission disk. The cross-section of the annular groove 17 is conical. Four annular grooves 17 are provided on the same transmission disk, which can meet the simultaneous transmission of two copper wires and can also realize two windings of two copper wires on the same transmission disk.
[0036] The top surface of the first transmission disk is flush with the copper wire extrusion point. The second transmission disk is located directly above the first transmission disk, and the third transmission disk is located in front of the second transmission disk. The copper wire is transmitted forward and downward, and bypasses the first transmission disk from back to front, then moves upward and bypasses the second transmission disk from back to front, then is transmitted downward and bypasses the third transmission disk from back to front, then is transmitted backward and upward, bypasses the second transmission disk again from back to front, then is transmitted downward and bypasses the third transmission disk from back to front, and then is transmitted forward.
[0037] A guide frame 9 connected to the box body 8 is further provided at the rear of the upper pressing roller 1 . The guide frame 9 is provided with two guide rollers located on both sides of the copper wire, and the guide rollers extend in the height direction.
[0038] The guide frame 9 is hingedly connected to a guide hook 11 located above and behind the wire roller 10 through a hinge shaft. A spring 12 is fixed to the guide frame 9 to drive the guide hook 11 to rotate downward. The end face of the guide hook 11 in contact with the copper wire is a third inclined surface 16. The third inclined surface 16 is inclined downward from back to front. The third inclined surface 16 and the spring 12 are located on both sides of the hinge shaft.
[0039] In particular, see the attached Figure 2 , the copper wire is transmitted from back to front, the left side is the front and the right side is the back.
[0040] When the utility model is in use, the copper wire is driven by the transmission device to pass through between the upper pressing roller 1 and the lower pressing roller 2. The upper pressing roller 1 and the lower pressing roller 2 squeeze the top and bottom surfaces of the copper wire, thereby flattening the copper wire. At the same time, by adjusting the sliding position of the slider 3, the position of the first inclined surface 15 supported by the slider 3 is adjusted, thereby adjusting the height of the lower base 4 on the box body 8, thereby adjusting the height of the lower pressing roller 2, and adjusting the distance between the upper pressing roller 1 and the lower pressing roller 2, thereby adjusting the squeezing strength of the copper wire; the setting of the second inclined surface plays a guiding role, making it convenient to adjust the height of the lower base 4 by sliding the slider 3.
[0041] Of course, the above description is not limited to the above examples. The technical features not described in the present invention can be achieved through or by adopting existing technologies, and will not be repeated here. The above embodiments and drawings are only used to illustrate the technical solution of the present invention and are not limitations of the present invention. The present invention is described in detail with reference to the preferred implementation methods. Ordinary technicians in this field should understand that the changes, modifications, additions or substitutions made by ordinary technicians in this technical field within the essential scope of the present invention do not depart from the purpose of the present invention and should also fall within the scope of protection of the claims of the present invention.
Claims
1. A flattening device for transformer coil copper wire, characterized by: The invention comprises a box body (8), an upper pressing roller (1) and a lower pressing roller (2) arranged on the box body (8) and for squeezing the copper wire, and a transmission device for driving the copper wire to be transported, wherein the lower pressing roller (2) is axially connected to a lower base (4) that slides in a height direction, the bottom surface of the lower base (4) is a first inclined surface (15), and the box body (8) is provided with a slider (3) that slides in an inclined direction of the first inclined surface (15) and supports the lower base (4); A guide frame (9) is further provided at the rear of the upper pressure roller (1), and the guide frame (9) is hinged with a guide hook (11) located at the rear of the upper pressure roller. A spring (12) is fixed to the guide frame (9) for driving the guide hook (11) to rotate downward. The end surface of the guide hook (11) in contact with the copper wire is a third inclined surface (16), and the third inclined surface (16) is inclined downward from the back to the front.
2. The flattening device for transformer coil copper wire according to claim 1, characterized in that: The top surface of the slider (3) is a second inclined surface adapted to the first inclined surface (15).
3. The flattening device for transformer coil copper wire according to claim 2, characterized in that: The slider (3) is threadedly connected to a lead screw (5) extending along the sliding direction of the slider (3) and axially connected to the box body (8), and a turning handle (6) is fixed to the lead screw (5).
4. The flattening device for transformer coil copper wire according to claim 1, characterized in that: The transmission device is located in front of the upper pressure roller (1), and comprises a plurality of transmission discs (7) and a motor for driving the transmission discs (7) to rotate. The circumferential surface of the transmission discs (7) is provided with a plurality of annular grooves (17) for the copper wire to pass around.
5. The flattening device for transformer coil copper wire according to claim 4, characterized in that: The cross section of the annular groove (17) is conical.
6. The flattening device for transformer coil copper wire according to claim 4 or 5, characterized in that: The number of the annular grooves (17) is twice the number of the copper wires.
7. The flattening device for transformer coil copper wire according to claim 1, characterized in that: The guide frame (9) is provided with two guide rollers located on both sides of the copper wire and between the guide hook and the upper pressure roller, and the guide rollers extend in the height direction.
8. The flattening device for transformer coil copper wire according to claim 1, characterized in that: The box (8) is further provided with two guide groups (14) located on both sides of the copper wire extrusion, and the two guide groups (14) are arranged along the copper wire transmission direction, and the guide groups (14) include two guide plates located at the upper and lower ends of the copper wire. The box (8) is further provided with a guide block (13), and the guide block (13) is provided with a guide hole for the copper wire to pass through, and the guide plate is located between the copper wire extrusion position and the guide block (13).