Foil winding machine and transformation method

Abstract

The invention relates to the technical field of transformer manufacturing, and discloses a foil winding machine and a transformation method.The foil winding machine comprises a main machine base, the front side of one support is rotationally connected with a first air expansion shaft, the outer side of the first air expansion shaft is wound with an interlayer insulating material, the front side of the other support is rotationally connected with a second air expansion shaft, and the outer side of the second air expansion shaft is wound with an interlayer insulating material; a supporting strip is wound on the outer side of the second air expansion shaft, an unwinding main machine and an electric control cabinet are fixed to the other side of the upper end face of the main machine base, the output end of the unwinding main machine is connected with a copper foil discharging frame, and copper foil is wound on the outer side of the copper foil discharging frame. According to the foil winding machine, through constant tension output of the unwinding variable frequency motor and the interlayer variable frequency motor and position control of the winding main shaft servo motor, copper foil and interlayer insulating materials keep constant tension when a coil is wound, a supporting strip does not move in the winding process, the wound coil is more compact, the outer diameter is not oversized, the product quality is guaranteed, and the production efficiency is improved. And the production efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of transformer manufacturing, in particular to a foil winding machine and a modification method thereof. Background Art

[0002] The foil coil is made of one or more wires wound together. It is a kind of layer coil. Unlike the cylindrical coil, the foil coil's conductor is a thin and wide copper foil or aluminum foil, with only one turn in the axial direction and multiple turns in the radial direction. After winding several turns, there will be an axial oil gap. This structure is mainly used in low-voltage, small-capacity transformers. The foil winding machine, also known as the foil coil winding machine or the foil winding machine, is a special equipment for winding the foil coil of the transformer.

[0003] Foil winding technology is a winding technology for transformer windings. Its main advantages in the field of transformer manufacturing are: 1. In terms of electrical performance, it can make the winding have better electric field distribution, reduce the possibility of local discharge, and improve the insulation performance of the transformer; and the winding structure is relatively compact, which makes the transformer reactance value more stable and the core window utilization rate is high, thereby reducing production costs; 2. Compared with wire-wound windings, foil windings have higher mechanical properties, higher short-circuit resistance, and high production efficiency, so foil winding technology is widely used in transformer manufacturing.

[0004] Due to product upgrades, the old foil winding machine can no longer meet production needs, mainly because constant tension cannot be guaranteed during the winding process. Winding is performed when the foot switch is pressed. When the foot switch is released, the unwinding brake is activated. Due to the lack of backward tension and the gap between the worm gear and the gearbox, the copper foil and the interlayer insulation relax, the tension is zero, the stays will move, and the overall dimensions will be larger, reducing the electrical performance. Therefore, constant tension is necessary to ensure product production quality and meet technical requirements. Summary of the invention

[0005] The object of the present invention is to provide a foil winding machine and a modification method to solve the problem that constant tension cannot be guaranteed during the winding process proposed in the above background technology. Winding is carried out when the foot switch is pressed. When the foot switch is released, the unwinding brake is actuated. Due to the lack of backward tension and the gap between the worm gear and the gearbox, the copper foil and the interlayer insulation are relaxed, the tension is zero, the support bar will move, and the overall size will be larger, thereby reducing the electrical performance.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a foil winding machine and a modification method, comprising a main machine base, a winding main machine is fixed to one side of the upper end surface of the main machine base, the output end of the winding main machine is connected to the winding main shaft, a winding mold is sleeved on the outer side of the winding main shaft, a limiting mechanism is arranged on the upper end surface of the main machine base, support plates are symmetrically fixed on both sides of the upper end surface of the main machine base, an interlayer insulating material feeding roller, a strut feeding roller, a copper foil guide roller and a copper foil feeding roller are rotatably connected between the two support plates, two brackets are fixed in the middle of the upper end surface of the main machine base, one of the brackets is rotatably connected to a first inflatable shaft at the front side, and an interlayer insulating material is wound around the outer side of the first inflatable shaft, and the other bracket is rotatably connected to a second inflatable shaft at the front side, and a strut is wound around the outer side of the second inflatable shaft.

[0007] An unwinding main machine and an electric control cabinet are fixed to the other side of the upper end surface of the main machine base. The output end of the unwinding main machine is connected to a copper foil unwinding rack, and copper foil is wound around the outer side of the copper foil unwinding rack.

[0008] Preferably, the limiting mechanism includes a motor, and the motor is fixed on the front side of the main engine base, the output end of the motor is connected to the screw rod, and the limiting plates are symmetrically threaded on both sides of the outside of the screw rod, and sliding grooves are symmetrically opened on both sides of the upper end surface of the main engine base, and the limiting plates are slidably connected in the sliding grooves.

[0009] Preferably, a first inter-layer frequency conversion motor is fixed to the rear side of one of the brackets, and an output end of the first inter-layer frequency conversion motor is connected to the first inflatable shaft.

[0010] Preferably, a second inter-layer frequency conversion motor is fixed to the rear side of another of the brackets, and an output end of the second inter-layer frequency conversion motor is connected to the second inflatable shaft.

[0011] Preferably, an operating screen is fixed to the outer side of one of the support plates, and the bottom of the operating screen is connected to a foot switch via a connecting line, and the foot switch is fixed to the upper end surface of the main unit base.

[0012] Preferably, the copper foil passes between two copper foil feeding rollers, and the copper foil bypasses the copper foil guide rollers and is wound on a winding die.

[0013] Preferably, the interlayer insulating material passes around an interlayer insulating material feeding roller and is wound on a winding mold.

[0014] Preferably, the stay passes around a stay feeding roller and is wound on a winding die, and the stay is located between the copper foil and the interlayer insulating material.

[0015] A method for modifying a foil winding machine comprises the following steps:

[0016] S1, passing the copper foil between two copper foil feeding rollers and around the copper foil guide roller, and then fixing the copper foil on the winding mold, passing the interlayer insulation material around the interlayer insulation material feeding roller and fixing it on the winding mold, passing the stay around the stay feeding roller and fixing it on the winding mold, and the stay is located between the copper foil and the interlayer insulation material;

[0017] S2. Adjust the distance between the two limit plates by rotating the screw rod to limit the copper foil, interlayer insulation material and support bar;

[0018] S3, the copper foil unwinding rack rotates to release the copper foil, the first air shaft rotates to release the interlayer insulating material, the second air shaft rotates to release the support bar, and the winding mold rotates with the winding main shaft to wind the coil.

[0019] Compared with the prior art, the invention has the following beneficial effects: the foil winding machine,

[0020] 1. The foil winding machine can achieve the purpose of maintaining constant tension between the copper foil and the interlayer insulation material of the coil during winding through the constant tension output of the unwinding frequency conversion motor and the interlayer frequency conversion motor and the position control of the winding spindle servo motor, so that the support bar does not move during the winding process, and the wound coil is more compact and the outer diameter is not too large, which ensures product quality and improves production efficiency.

[0021] 2. The foil winding machine can achieve the purpose that the two limit plates play a role in limiting the copper foil, interlayer insulation material and support bars. The rotation of the screw rod can drive the two limit plates to move. The distance between the two limit plates is adjustable, which is convenient for limiting copper foils of different widths. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the front view of the three-dimensional structure of the present invention;

[0023] Figure 2 It is a rear-view stereoscopic structural schematic diagram of the present invention;

[0024] Figure 3 It is a schematic diagram of a partial three-dimensional structure of the present invention;

[0025] Figure 4 It is a schematic diagram of the top view structure of the present invention;

[0026] Figure 5 It is a schematic diagram of the support structure of the present invention.

[0027] In the figure: 1. main machine base; 2. winding main machine; 3. winding main shaft; 4. winding mold; 5. limit mechanism; 501. motor; 502. screw rod; 503. slide; 504. limit plate; 6. support plate; 7. interlayer insulation material feeding roller; 8. support bar feeding roller; 9. copper foil guide roller; 10. copper foil feeding roller; 11. bracket; 12. first interlayer frequency conversion motor; 13. first air shaft; 14. interlayer insulation material; 15. second interlayer frequency conversion motor; 16. second air shaft; 17. support bar; 18. unwinding main machine; 19. copper foil unwinding rack; 20. copper foil; 21. electric control cabinet; 22. operation screen; 23. foot switch. DETAILED DESCRIPTION

[0028] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0029] See also Figure 1-5 The present invention provides a technical solution: a foil winding machine, comprising a main machine base 1, a winding main machine 2 is fixed on one side of the upper end surface of the main machine base 1, the output end of the winding main machine 2 is connected to the winding main shaft 3, a winding mold 4 is sleeved on the outer side of the winding main shaft 3, a limiting mechanism 5 is arranged on the upper end surface of the main machine base 1, support plates 6 are symmetrically fixed on both sides of the upper end surface of the main machine base 1, an interlayer insulating material feeding roller 7, a stay feeding roller 8, a copper foil guide roller 9 and a copper foil feeding roller 10 are rotatably connected between the two support plates 6, two brackets 11 are fixed in the middle of the upper end surface of the main machine base 1, a first inflatable shaft 13 is rotatably connected to the front side of one of the brackets 11, an interlayer insulating material 14 is wound around the outer side of the first inflatable shaft 13, a second inflatable shaft 16 is rotatably connected to the front side of the other bracket 11, a stay 17 is wound around the outer side of the second inflatable shaft 16.

[0030] An unwinding main machine 18 and an electric control cabinet 21 are fixed to the other side of the upper end surface of the main machine base 1. The output end of the unwinding main machine 18 is connected to a copper foil unwinding rack 19, and copper foil 20 is wound around the outer side of the copper foil unwinding rack 19.

[0031] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the limiting mechanism 5 includes a motor 501, and the motor 501 is fixed on the front side of the main engine base 1, the output end of the motor 501 is connected to the screw rod 502, and the screw rod 502 is symmetrically threaded on both sides of the outside with a limiting plate 504, and the upper end surface of the main engine base 1 is symmetrically provided with a slide groove 503 on both sides, and the limiting plate 504 is slidably connected in the slide groove 503, and the screw rod 502 can rotate under the action of the motor 501. At this time, the limiting plate 504 can slide under the limiting action of the screw rod 502 and the slide groove 503, and the two limiting plates 504 are close to or away from each other. The spacing between the two limiting plates 504 can be adjusted according to the width of the interlayer insulating material 14, the support bar 17 and the copper foil 20, and the two limiting plates 504 can be used to limit the interlayer insulating material 14, the support bar 17 and the copper foil 20.

[0032] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a first interlayer frequency conversion motor 12 is fixed to the rear side of one of the brackets 11, and the output end of the first interlayer frequency conversion motor 12 is connected to the first inflatable shaft 13. An interlayer insulating material 14 is wound around the outer side of the first inflatable shaft 13. The first inflatable shaft 13 can rotate under the action of the first interlayer frequency conversion motor 12 to facilitate the automatic release of the interlayer insulating material 14.

[0033] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, a second interlayer frequency conversion motor 15 is fixed to the rear side of another bracket 11, and the output end of the second interlayer frequency conversion motor 15 is connected to the second inflatable shaft 16. A support bar 17 is wound around the outer side of the second inflatable shaft 16. The second inflatable shaft 16 can rotate under the action of the second interlayer frequency conversion motor 15 to facilitate the automatic release of the support bar 17.

[0034] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an operation screen 22 is fixed to the outer side of one of the support plates 6 , and the bottom of the operation screen 22 is connected to a foot switch 23 via a connecting line, and the foot switch 23 is fixed on the upper end surface of the host base 1 .

[0035] In this embodiment, Figure 1 , Figure 2 and Figure 4As shown, the copper foil 20 passes between two copper foil feeding rollers 10, and the copper foil 20 bypasses the copper foil guide roller 9 and is wound on the winding mold 4. When the copper foil 20 is wound on the winding mold 4, the copper foil 20 needs to pass between the two copper foil feeding rollers 10 and bypass the copper foil guide roller 9. The two copper foil feeding rollers 10 play a supporting and limiting role in the process of winding the copper foil 20, and the copper foil guide roller 9 plays a guiding role for the copper foil 20.

[0036] In this embodiment, Figure 1 , Figure 2 and Figure 4 As shown, the interlayer insulating material 14 passes around the interlayer insulating material feeding roller 7 and is wound on the winding mold 4. When the interlayer insulating material 14 is wound on the winding mold 4, the interlayer insulating material 14 needs to pass around the interlayer insulating material feeding roller 7. The interlayer insulating material feeding roller 7 guides the interlayer insulating material 14.

[0037] In this embodiment, Figure 1 , Figure 2 , Figure 4 and Figure 5 As shown, the stay 17 passes through the stay feed roller 8 and is wound on the winding mold 4, and the stay 17 is located between the copper foil 20 and the interlayer insulating material 14. When the stay 17 is wound on the winding mold 4, the stay 17 needs to pass through the stay feed roller 8, and the stay feed roller 8 guides the stay 17.

[0038] According to another aspect of the present invention, a method for modifying a foil winding machine is provided, comprising the following steps:

[0039] S1, passing the copper foil 20 between two copper foil feeding rollers 10 and around the copper foil guide roller 9, and then fixing the copper foil 20 on the winding mold 4, passing the interlayer insulating material 14 around the interlayer insulating material feeding roller 7 and fixing it on the winding mold 4, passing the stay 17 around the stay feeding roller 8 and fixing it on the winding mold 4, and the stay 17 is located between the copper foil 20 and the interlayer insulating material 14;

[0040] S2, adjusting the distance between the two limiting plates 504 by rotating the screw rod 502, so as to limit the copper foil 20, the interlayer insulating material 14 and the support bar 17;

[0041] S3, the copper foil unwinding rack 19 rotates to release the copper foil 20, the first inflatable shaft 13 rotates to release the interlayer insulating material 14, the second inflatable shaft 16 rotates to release the stay 17, and the winding mold 4 rotates together with the winding main shaft 3, thereby winding the coil.

[0042] The working principle of the device is as follows: the operation screen 22 and the foot switch 23 are used to control the device. The outer side of the copper foil unwinding rack 19 is rolled with copper foil 20, the outer side of the first inflatable shaft 13 is rolled with interlayer insulating material 14, and the outer side of the second inflatable shaft 16 is rolled with a support bar 17. The copper foil 20 is passed between the two copper foil feeding rollers 10 and bypassed the copper foil guide roller 9, and then the copper foil 20 is fixed on the winding mold 4. The interlayer insulating material 14 bypasses the interlayer insulating material feeding roller 7 and is fixed on the winding mold 4. The support bar 17 bypasses the support feeding roller 8 and is fixed on the winding mold 4. The support bar 17 is located between the copper foil 20 and the interlayer insulating material 14. Then the unwinding main machine (18) drives the copper foil unwinding rack (19) to rotate, thereby releasing the copper foil (20). The first interlayer frequency conversion motor (12) drives the first inflatable shaft ( 13) rotates, thereby releasing the interlayer insulating material (14), the second interlayer frequency conversion motor (15) drives the second inflatable shaft (16) to rotate, thereby releasing the support bar (17), and the winding mold 4 rotates together with the winding main shaft 3, so that the copper foil 20, the support bar 17 and the interlayer insulating material 14 are combined and wound into a coil, and the rotation of the screw rod 502 can drive the two limit plates 504 to slide, and the spacing between the two limit plates 504 is adjustable, which is convenient for limiting the copper foil 20, the support bar 17 and the interlayer insulating material 14 to avoid displacement, and when the coil is wound, the copper foil and the interlayer insulating material maintain a constant tension, the support bar does not move during the winding process, and the wound coil is more compact, the outer diameter is not too large, which ensures product quality and improves production efficiency. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0043] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A foil winding machine, comprising a main machine base (1), characterized in that: A winding main machine (2) is fixed to one side of the upper end surface of the main machine base (1), the output end of the winding main machine (2) is connected to the winding main shaft (3), the outer side of the winding main shaft (3) is sleeved with a winding mold (4), the upper end surface of the main machine base (1) is provided with a limit mechanism (5), support plates (6) are symmetrically fixed to the two sides of the upper end surface of the main machine base (1), and an interlayer insulation material feeding roller (7) and a support bar feeding roller (8) are rotatably connected between the two support plates (6). ), a copper foil guide roller (9) and a copper foil feeding roller (10), two brackets (11) are fixed in the middle of the upper end surface of the main frame base (1), the front side of one of the brackets (11) is rotatably connected to a first inflatable shaft (13), the outer side of the first inflatable shaft (13) is wound with an interlayer insulating material (14), and the front side of the other bracket (11) is rotatably connected to a second inflatable shaft (16), the outer side of the second inflatable shaft (16) is wound with a stay (17); An unwinding main machine (18) and an electric control cabinet (21) are fixed to the other side of the upper end surface of the main machine base (1); the output end of the unwinding main machine (18) is connected to a copper foil unwinding rack (19); and copper foil (20) is wound around the outer side of the copper foil unwinding rack (19).

2. A foil winding machine according to claim 1, characterized in that: The limiting mechanism (5) comprises a motor (501), and the motor (501) is fixed on the front side of the main engine base (1), the output end of the motor (501) is connected to the screw rod (502), and the screw rod (502) is symmetrically threaded on both sides of the outside with a limiting plate (504), and the upper end surface of the main engine base (1) is symmetrically provided with a sliding groove (503), and the limiting plate (504) is slidably connected in the sliding groove (503).

3. A foil winding machine according to claim 1, characterized in that: A first inter-layer frequency conversion motor (12) is fixed to the rear side of one of the brackets (11), and the output end of the first inter-layer frequency conversion motor (12) is connected to the first inflatable shaft (13).

4. A foil winding machine according to claim 1, characterized in that: A second inter-layer frequency conversion motor (15) is fixed to the rear side of another of the brackets (11), and the output end of the second inter-layer frequency conversion motor (15) is connected to the second inflatable shaft (16).

5. A foil winding machine according to claim 1, characterized in that: An operating screen (22) is fixed on the outer side of one of the support plates (6), and the bottom of the operating screen (22) is connected to a foot switch (23) via a connecting line. The foot switch (23) is fixed on the upper end surface of the main machine base (1).

6. A foil winding machine according to claim 1, characterized in that: The copper foil (20) passes between two copper foil feeding rollers (10), and the copper foil (20) bypasses the copper foil guide roller (9) and is wound on the winding mold (4).

7. A foil winding machine according to claim 1, characterized in that: The interlayer insulating material (14) passes around an interlayer insulating material feeding roller (7) and is wound onto a winding mold (4).

8. A foil winding machine according to claim 1, characterized in that: The stay (17) passes around a stay feeding roller (8) and is wound on a winding mold (4), and the stay (17) is located between the copper foil (20) and the interlayer insulating material (14).

9. A method for modifying a foil winding machine, applied to a foil winding machine according to any one of claims 1 to 8, characterized in that: The following steps are involved: S1, passing the copper foil (20) between two copper foil feeding rollers (10) and around the copper foil guide roller (9), and then fixing the copper foil (20) on the winding mold (4), passing the interlayer insulating material (14) around the interlayer insulating material feeding roller (7) and fixing it on the winding mold (4), passing the support bar (17) around the support bar feeding roller (8) and fixing it on the winding mold (4), and the support bar (17) is located between the copper foil (20) and the interlayer insulating material (14); S2, adjusting the distance between the two limiting plates (504) by rotating the screw rod (502), so as to limit the copper foil (20), the interlayer insulating material (14) and the support bar (17); S3, the copper foil unwinding rack (19) rotates to release the copper foil (20), the first inflatable shaft (13) rotates to release the interlayer insulating material (14), the second inflatable shaft (16) rotates to release the support bar (17), and the winding mold (4) rotates together with the winding main shaft (3), thereby winding the coil.

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