Discharging rack combined system for triangular iron core winding

Abstract

The utility model discloses a discharging rack combined system for triangular iron core winding. The discharging rack combined system comprises a low-voltage pay-off rack, a copper foil discharging machine, a high-voltage pay-off rack and an interlayer paper discharging machine which are the same in discharging direction. The copper foil feeding machine, the high-voltage pay-off rack and the interlayer paper feeding machine are all arranged on the bottom plate in a sliding mode, a movable rack is further arranged on the bottom plate in a sliding mode, and a guide roller is rotationally arranged on the movable rack; and the sliding directions of the copper foil feeding machine, the high-voltage pay-off rack, the interlayer paper feeding machine and the movable rack are vertical to the feeding direction. According to the utility model, the trouble of repeatedly disassembling and assembling the material coil is saved, the labor intensity is reduced, the winding efficiency is improved, and the device is suitable for winding the iron core of the transformer.

Description

Technical Field

[0001] The utility model relates to a copper foil unwinding machine, in particular to an unwinding rack combined system for triangular iron core winding. Background Art

[0002] When making the iron core of the transformer, the material rolls wound with low-voltage wires, high-voltage wires and copper foil are placed on a unwinding rack, and the wires are wound on the iron core using a winding machine. However, since only one type of wire needs to be wound on the iron core, which can be a low-voltage wire, a high-voltage wire or copper foil, the unwinding racks in the prior art are separately and independently arranged, and the iron core needs to be placed at corresponding positions of different material racks for winding according to the type of winding. In order to reduce the floor space, there is currently a structure that integrates various unwinding racks on one device. However, since several unwinding racks are located on the same straight line, when winding different wires, the material rolls close to the winding machine will affect the operation of the wires on the subsequent unwinding racks, and the temporarily unused material rolls need to be removed and unwound, and then installed on the unwinding rack when winding the type of wire. Repeated installation not only increases the labor intensity, but also reduces the efficiency of winding. Utility Model Content

[0003] In order to solve the above deficiencies in the prior art, the utility model aims to provide a material unwinding rack combination system for triangular core winding, so as to achieve the purpose of reducing labor intensity and improving winding efficiency.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0005] A combined unwinding rack system for triangular core winding comprises a low-voltage unwinding rack, a copper foil unwinding machine, a high-voltage unwinding rack and an interlayer paper unwinding machine with the same unwinding direction; the copper foil unwinding machine, the high-voltage unwinding rack and the interlayer paper unwinding machine are all slidably arranged on a bottom plate, a movable rack is also slidably arranged on the bottom plate, and a guide roller is rotatably arranged on the movable rack; the sliding direction of the copper foil unwinding machine, the high-voltage unwinding rack, the interlayer paper unwinding machine and the movable rack is perpendicular to the unwinding direction.

[0006] As a limitation of the present utility model, the low-voltage pay-off frame includes a support frame, a low-voltage wire coil placement assembly and a guide arm. There are at least two wire coil placement assemblies, which include a low-voltage support shaft rotatably arranged on the support frame and a fixed disk fixed on the low-voltage support shaft for fixing the low-voltage wire coil; at least two guide shafts are rotatably arranged on the guide arm.

[0007] As a further limitation of the present invention, a brake disc is fixedly provided at one end of the low-voltage support shaft in the low-voltage wire reel placement assembly, and a pneumatic stopper for clamping the brake disc is fixedly provided on the support frame.

[0008] As another limitation of the present invention, the copper foil unloading machine includes a box body, a main shaft rotatably arranged on the box body, a driving device for driving the main shaft to rotate, a tensioning device arranged on the main shaft for tightening the copper foil roll, and a push-pull positioning device for driving the tensioning device to open and close; the push-pull positioning device includes a pull rod fixedly arranged on the tensioning device and a dynamic positioning device for driving the pull rod to move axially along the main shaft; a limit device is provided on the bottom plate for limiting the sliding position of the box body.

[0009] As a limitation of the present invention, the box body is also rotatably connected to a rotating shaft, one end of which is driven to rotate by a power source, and the other end is fixed with a pressure arm, on which a roller for pressing against the copper foil roll is rotatably connected.

[0010] As a further limitation of the present utility model, the driving device includes a motor, a reducer, a magnetic powder clutch, a driving sprocket, a driven sprocket and a chain. The motor, the reducer and the magnetic powder clutch are connected in sequence. The driving sprocket is fixed on the magnetic powder clutch, and the driven sprocket is fixed on the main shaft.

[0011] As a further limitation of the present invention, the dynamic positioning device is any one of a first air cylinder, a hydraulic cylinder or an electric push rod.

[0012] As a third limitation of the present utility model, the power source connected to the rotating shaft includes a second cylinder fixed on the box body and a pressure rod fixed on the rotating shaft, and the piston rod of the second cylinder is hinged to the end of the pressure rod.

[0013] As the fourth limitation of the present utility model, the high-voltage pay-off frame includes a mounting frame slidably arranged on a base plate and a high-voltage support shaft rotatably arranged on the mounting frame, and also includes a motor, a reducer and a magnetic powder clutch connected in sequence for driving the high-voltage support shaft to rotate, and the output shaft of the magnetic powder clutch is fixedly connected to the high-voltage support shaft.

[0014] As a limitation of the present utility model, the interlayer paper discharge machine includes a frame slidably arranged on a bottom plate and a discharge shaft rotatably arranged on the frame, and also includes a motor, a reducer and a magnetic powder clutch connected in sequence for driving the discharge shaft to rotate, and the output shaft of the magnetic powder clutch is fixedly connected to the discharge shaft.

[0015] Due to the adoption of the above technical solution, the utility model has the following beneficial effects compared with the prior art:

[0016] (1) The utility model integrates multiple devices into one, and the high-voltage pay-off stand, the interlayer paper feeder and the copper foil feeder can all slide on the bottom plate. When the corresponding wire material needs to be wound, the unused device can be slid along the bottom plate to a position offset from it without affecting the feed, thereby eliminating the trouble of repeatedly disassembling and installing the material roll, reducing labor intensity and improving winding efficiency; and the guide rollers on the mobile frame can support or guide the wire material, avoiding the extension of the wire material suspension path due to the arrangement of multiple devices, and can further guide and support the wire material, thereby improving the winding accuracy;

[0017] (2) The pneumatic stopper on the low-pressure pay-off stand of the utility model can keep the low-pressure support shaft unloading at a uniform speed, reducing the influence of inertia;

[0018] (3) The utility model utilizes a power positioning device to drive the pull rod to drive the tensioning device to open and close, which has a high degree of automation, saves the trouble of manually fixing the copper foil roll, reduces labor intensity, and the power positioning device enables the tensioning device to be stretched to a position that is tightly fitted with the inner hole of the copper foil roll, thereby improving the firmness of the connection between the copper foil roll and the main shaft, and avoiding the copper foil roll from falling due to loosening caused by insufficient tension;

[0019] (4) The pressing arm of the utility model can press the copper foil tightly against the copper foil roll, preventing the copper foil from loosening on the copper foil roll and affecting the unwinding, thereby improving the winding quality on the iron core;

[0020] (5) The magnetic powder clutch on the high-voltage wire unwinding machine, interlayer paper unwinding machine and copper foil unwinding machine of the utility model can adjust its tension by the size of the input current to ensure that the tension generated between the wire material on the material roll and the iron core is the same when there is more or less wire on the roll, thereby preventing the unwinding speed from being too fast due to inertia.

[0021] In summary, the utility model saves the trouble of repeatedly disassembling and assembling the material coil, reduces the labor intensity, improves the efficiency of winding, and is suitable for winding the iron core of the transformer. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention is described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Figure 1 This is a schematic diagram of the main structure of an embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the main structure of a low-voltage pay-off frame according to an embodiment of the utility model;

[0025] Figure 3 It is a left-side structural schematic diagram of a low-voltage pay-off frame according to an embodiment of the utility model;

[0026] Figure 4 This is a schematic diagram of the main structure of the copper foil unloading machine according to an embodiment of the utility model;

[0027] Figure 5 This is a schematic diagram of the cross-sectional structure of the copper foil unloading machine of the utility model when the arc-shaped support plate is opened;

[0028] Figure 6 This is a schematic diagram of the cross-sectional structure of the copper foil unloading machine according to the utility model when the arc-shaped support plate is retracted;

[0029] Figure 7 This is a right side structural schematic diagram of the embodiment of the utility model after the copper foil roll is installed;

[0030] Figure 8 It is a left-side structural schematic diagram of a high-voltage pay-off frame according to an embodiment of the utility model;

[0031] Fig. 9 It is a left-side structural schematic diagram of the interlayer paper unloading machine according to an embodiment of the utility model.

[0032] In the figure: 1. Low-voltage pay-off stand; 2. Copper foil unloading machine; 3. High-voltage pay-off stand; 4. Interlayer paper unloading machine; 5. Moving stand; 6. Guide roller; 7. Linear guide rail; 8. Bottom plate; 9. Magnetic powder clutch;

[0033] 11. Support frame; 12. Low-pressure support shaft; 13. Fixed plate; 14. Guide arm; 15. Guide shaft; 16. Brake disc; 17. Pneumatic stopper; 18. Low-pressure wire reel;

[0034] 201, box body; 202, main shaft; 203, copper foil roll; 204, driving sprocket; 205, driven sprocket; 206, chain; 207, connecting plate; 2071, long hole; 208, movable sleeve; 209, connecting rod; 210, arc support plate; 211, first mounting plate; 212, second mounting plate; 213, flange; 214, bearing with seat; 215, pull rod; 216, positioning plate; 217, roller; 218, first cylinder; 219, second cylinder; 220, rotating shaft; 221, pressure arm; 222, roller; 223, pressure rod;

[0035] 31. Mounting frame; 32. High voltage support shaft; 33. High voltage wire reel;

[0036] 41. Frame; 42. Unwinding shaft; 43. Paper roll between layers. DETAILED DESCRIPTION

[0037] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and understand the present invention, and are not used to limit the present invention.

[0038] Embodiment A material unwinding rack assembly system for triangular core winding

[0039] like Figure 1 As shown, this embodiment includes a low-voltage pay-off frame 1, a copper foil feeder 2, a high-voltage pay-off frame 3 and an interlayer paper feeder 4 which are placed in sequence. The four have the same feeding direction and the parts for feeding the material rolls are all located on the same side. Since the low-voltage pay-off frame 1 is relatively large and has a relatively high height, in order not to hinder other devices from feeding in the winding machine, the low-voltage pay-off frame 1 is located at the end farthest away from the winding machine. At the same time, since the feeding heights of the copper foil feeder 2, the high-voltage pay-off frame 3 and the interlayer paper feeder 4 are basically the same, in order to prevent the three from affecting each other, the copper foil feeder 2, the high-voltage pay-off frame 3 and the interlayer paper feeder 4 are all slidably arranged on the bottom plate 8, and the sliding directions of the copper foil feeder 2, the high-voltage pay-off frame 3, the interlayer paper feeder 4 and the movable frame 5 are perpendicular to the feeding direction. When one of them is used, the other parts are moved to a position that does not affect the feeding.

[0040] The bottom plate 8 is placed on the ground, and three groups of linear guide rails 7 are fixed on the bottom plate 8. The three groups of linear guide rails 7 are arranged along the width direction of the bottom plate 8, that is, arranged along the direction perpendicular to the feeding direction. Among them, the copper foil feeding machine 2 is slidably arranged on one group of linear guide rails 7 through a slider, the high-voltage pay-off frame 3 is slidably arranged on another group of linear guide rails 7 through a slider, and the interlayer paper feeding machine 4 is slidably arranged on the third group of linear guide rails 7 through a slider. A guide movable frame 5 is also slidably arranged on the bottom plate 8. The movable frame 5 is a gantry structure, and another group of linear guide rails 7 is arranged on the bottom plate 8. The movable frame 5 is slidably arranged on the linear guide rails 7 through a slider. A guide roller 6 is rotatably arranged on the guide movable frame 5, and two guide rollers 6 are arranged. When the copper foil feeding machine 2 and the low-voltage pay-off frame 1 far away from the winding machine are used, the guide roller 6 can be used to change the position of entering the winding machine, or to play a supporting role when the copper foil enters the winding machine. This embodiment also makes improvements to the details of each device, which are described in detail below:

[0041] 1. Low voltage pay-off rack 1

[0042] The low-voltage pay-off frame 1 includes a support frame 11, a low-voltage wire reel 18 placement assembly and a guide arm 14. The guide arm 14 is L-shaped and fixedly mounted on the support frame 11. At least two wire reel placement assemblies are provided. In this embodiment, six are provided. The six low-voltage wire reel 18 placement assemblies are divided into two groups, one above the other, and the two groups are distributed on both sides of the guide arm 14. The low-voltage wire reel placement assembly includes a low-voltage support shaft 12 rotatably arranged on the support frame 11 and a fixed disk 13 fixedly arranged on the low-voltage support shaft 12 for fixing the low-voltage wire reel 18. The fixed disk 13 is provided with a long hole. When fixing the low-voltage wire reel 18, the low-voltage wire reel 18 is fixed to the fixed disk 13 by passing a bolt through the long hole, so that the low-voltage wire reel 18 rotates with the low-voltage support shaft 12. At least two guide shafts 15 are rotatably arranged on the guide arm 14. In this embodiment, three guide shafts 15 are arranged, one of which is located at the end of the guide arm 14, and the other two guide shafts 15 are located at a lower position. The low-voltage wires of the low-voltage wire reels 18 on the three low-voltage support shafts 12 are wound on the upper guide shaft 15, and the low-voltage wires of the low-voltage wire reels 18 on the other three low-voltage support shafts 12 are wound between the two lower guide shafts 15, and then wound on the upper guide shaft 15 and enter the winding machine. Multiple low-voltage wire reels 18 can unwind at the same time, which can improve the winding efficiency.

[0043] A brake disc 16 is fixedly arranged at one end of the low-voltage support shaft 12 in the low-voltage wire reel 18 placement assembly, and six pneumatic stops 17 for clamping the brake disc 16 are fixedly arranged on the support frame 11. The pneumatic stop 17 adopts the existing technology and is clamped on the brake disc 16. It can exert a certain resistance on the brake disc 16, thereby ensuring that the low-voltage wire reel 18 has a certain tension in the low-voltage wire in the winding machine, and the low-voltage wire will not become loose as the low-voltage wire on the wire reel becomes less, resulting in a reduction in tension that affects the quality of the winding.

[0044] 2. Copper foil feeding machine 2

[0045] like Figure 4As shown, the copper foil unloading machine 2 includes a box 201, a main shaft 202, a driving device, a tensioning device and a push-pull positioning device. The box 201 is slidably arranged on the bottom plate 8 through a linear guide rail 7. At the same time, a limiting device for limiting the sliding position of the box 201 is provided on the bottom plate 8. The limiting device includes a rack, a gear and a motor (not shown in the figure). The rack is fixed on the bottom plate 8 and arranged along the linear guide rail 7. The motor is fixed on the box 201, and the gear is fixed on the output shaft of the motor and cooperates with the rack. Through the rotation of the motor, the box 201 moves to the desired position and is positioned. The main shaft 202 is rotatably connected to the box 201, and the main shaft 202 is rotated by the driving device, so that the copper foil on the copper foil roll 203 is wound on the iron core. One end of the main shaft 202 is located outside the box body 201 and is used to install a tensioning device. The tensioning device is used to tighten the inner wall of the inner hole of the copper foil roll 203. When the tensioning device is expanded, the copper foil roll 203 can be firmly installed on the main shaft 202 and rotate with the main shaft 202. When the tensioning device is contracted, the copper foil roll 203 is removed from the main shaft 202 or installed on the main shaft 202.

[0046] The main shaft 202 is a hollow structure, and the main shaft 202 is rotatably connected to the box body 201 through a bearing, and one end of the main shaft 202 extends out of the box body 201. The driving device is located in the box body 201, and includes a motor, a reducer, a magnetic powder clutch 9, a driving sprocket 204, a driven sprocket 205 and a chain 206. The motor, the reducer and the magnetic powder clutch 9 are connected in sequence, the driving sprocket 204 is fixed on the magnetic powder clutch 9, the driven sprocket 205 is fixed on the main shaft 202, and the chain 206 is sleeved on the driving sprocket 204 and the driven sprocket 205, so that the rotation of the motor drives the main shaft 202 to rotate.

[0047] The tensioning device includes a connecting disk 207, a movable sleeve 208, a connecting rod 209, an arc-shaped support plate 210, and a flange 213. The connecting disk 207 is in the shape of a disk, fixedly mounted on the main shaft 202, and located outside the housing 201. The movable sleeve 208 is in the shape of a cylinder, and its inner diameter matches the outer diameter of the main shaft 202. It is slidably sleeved on the end of the main shaft 202 located outside the housing 201. The flange 213 is fixedly mounted on the end surface of the movable sleeve 208, so that the flange 213 reaches the limit position of the movement of the movable sleeve 208 after being pressed against the end surface of the main shaft 202. A seat bearing 214 is fixedly mounted on the flange 213. The arc-shaped support plate 210 is arranged on the movable sleeve 208 through the connecting rod 209. At least two arc-shaped support plates 210 are provided, and three, four or even more arc-shaped support plates 210 can also be provided, so that the circle where the arc-shaped support plates 210 are located is concentric with the main shaft 202. In this embodiment, four arc-shaped support plates 210 are provided. The specific structure of the arc support plate 210 set on the movable sleeve 208 through the connecting rod 209 is as follows: four first mounting plates 211 are evenly spaced and fixed on the movable sleeve 208, and a second mounting plate 212 is fixed in the length direction of the four arc support plates 210, and the second mounting plate 212 is located at the center of the arc direction of the arc support plate 210, and the four arc support plates 210 correspond to the four first mounting plates 211 respectively, and each arc support plate 210 is hinged to the corresponding first mounting plate 211 through four connecting rods 209, that is, two connecting rods 209 are hinged at both ends of one side of the first mounting plate 211, and two connecting rods 209 are also hinged at both ends of the other side, and the connecting rods 209 at both ends share a hinge point, and the other ends of the four connecting rods 209 are hinged on the second mounting plate 212, so that the arc support plate 210, the movable sleeve 208 and the connecting rods 209 at both ends form a parallelogram four-bar structure. The push-pull positioning device includes a pull rod 215 and a dynamic positioning device for driving the pull rod 215 to move axially along the main shaft 202. One end of the pull rod 215 is fixed on the inner ring of the seat bearing 214 and extends into the main shaft 202 through the flange 213. The other end of the pull rod 215 is connected to the dynamic positioning device for driving the pull rod 215 to move axially along the main shaft 202. When the flange 213 is against the end of the main shaft 202, as shown in FIG. Figure 5 As shown, the connecting rods 209 at both ends of the arc-shaped support plate 210 are in a vertical state. At this time, the four arc-shaped support plates 210 are opened toward the circumference of the main shaft 202, and the circle where the four arc-shaped support plates 210 are located is tightly attached to the inner hole of the copper foil roll 203, which can tighten the inner wall of the inner hole of the copper foil roll 203, and is used to fix the copper foil roll 203 on the arc-shaped support plate 210; when the flange 213 moves in the direction away from the main shaft 202, as shown in FIG. Figure 6As shown, the connecting rods 209 at both ends of the arc-shaped support plate 210 are inclined toward the direction close to the connecting disk 207. At this time, the four arc-shaped support plates 210 shrink toward the circumference of the main shaft 202, and the diameter of the circle where the four arc-shaped support plates 210 are located is smaller than the diameter of the inner hole of the copper foil roll 203, which is used for disassembling or installing the copper foil roll 203. The ends of the four arc-shaped support plates 210 close to the connecting disk 207 are all movably connected to the connecting disk 207 and can move along the radial direction of the connecting disk 207.

[0048] Furthermore, the connecting disk 207 is provided with four long holes 2071 corresponding to the arc-shaped support plates 210, and the long holes 2071 are arranged along the radial direction of the connecting disk 207. The four arc-shaped support plates 210 are fixedly provided with positioning plates 216, and two rollers 217 are rotatably connected to the positioning plates 216. The positioning plates 216 pass through the long holes 2071 on the connecting disk 207, so that the two rollers 217 are respectively in rolling contact with the two sides of the connecting disk 207. When the angle between the arc-shaped support plate 210 and the connecting rod 209 changes, the arc-shaped support plate 210 can move along the connecting disk 207 through the rollers 217, and the arc-shaped support plate 210 can rotate around the main axis 202 with the connecting disk 207.

[0049] The dynamic positioning device is any one of the first cylinder 218, the hydraulic cylinder or the electric push rod. This embodiment adopts the first cylinder 218. The piston rod of the first cylinder 218 extends into the box body 201 and is concentrically arranged with the main shaft 202. The piston rod of the first cylinder 218 is fixedly connected to the pull rod 215, so that the pull rod 215 moves axially along the main shaft 202, thereby driving the movable sleeve 208 to slide axially along the main shaft 202.

[0050] like Figure 4 , Figure 7 As shown, the bottom of the box 201 is also rotatably connected with a rotating shaft 220, both ends of which are located outside the box 201, one end extends to the bottom of the tensioning device, and the other end is driven to rotate by a power source. A pressure arm 221 is fixedly provided at one end of the rotating shaft 220 extending to the tensioning device. The pressure arm 221 is arc-shaped and extends upward to the tensioning device. A roller 222 for pressing against the copper foil roll 203 is rotatably connected to the pressure arm 221. The power source connected to the rotating shaft 220 includes a second cylinder 219 fixed to the box 201 and a pressure rod 223 fixed to the rotating shaft 220. The piston rod of the second cylinder 219 is hinged to the end of the pressure rod 223. The pressure rod 223 and the pressure arm 221 are located on both sides of the rotating shaft 220, so that when the piston rod of the second cylinder 219 drives the pressure rod 223 to move downward, the roller 222 on the pressure arm 221 presses on the copper foil of the copper foil roll 203.

[0051] When the copper foil unloading machine 2 is used, the first cylinder 218 is started, the piston rod of the first cylinder 218 is extended, and the movable sleeve 208 connected to the pull rod 215 through the flange 213 is driven to move in the direction away from the end of the main shaft 202. At this time, the connecting rods 209 at both ends of the arc-shaped support plate 210 are tilted toward the connecting plate 207, thereby driving the four arc-shaped support plates 210 to move downward and shrink along the long holes 2071 on the connecting plate 207, and then the copper foil roll 203 is sleeved on the four arc-shaped support plates 210, and then the telescopic rod of the first cylinder 218 is retracted. , driving the flange 213 against the end of the main shaft 202. At this time, the connecting rod 209 vertically opens the four arc-shaped support plates 210 to tighten the inner wall of the copper foil roll 203, so that the copper foil roll 203 is fixed on the tensioning device. Finally, the motor 31 is started to drive the main shaft 202 to rotate. The connecting plate 207 drives the copper foil roll 203 on the arc-shaped support plate 210 to rotate with the main shaft 202 through the positioning rod 5, and the copper foil is wound on the iron core. Since the pull rod 215 is fixed to the inner ring of the bearing in the seat bearing 214, it can be ensured that the pull rod 215 does not rotate with the main shaft 202. At the same time, the second cylinder 219 is started to press the pressure rod 223 downward, driving the pressure arm 221 on the rotating shaft 220 to approach the copper foil roll 203, so that the roller 222 is pressed on the copper foil roll 203 to prevent the copper foil on the copper foil roll 203 from loosening.

[0052] 3. High voltage pay-off stand 3

[0053] like Figure 8 As shown, the main structure of the high-voltage pay-off frame 3 adopts the existing technology, and there are two improvements to it, one is the connection method with the bottom plate 8, and the other is to add a magnetic powder clutch 9, so that the high-voltage wire reel 33 rotates at a constant speed and the tension between it and the winding machine is kept stable. The high-voltage pay-off frame 3 includes a mounting frame 31 and a high-voltage support shaft 32, the mounting frame 31 is slidably arranged on the bottom plate 8 through a linear guide rail 7, and the high-voltage support shaft 32 is rotatably arranged on the mounting frame 31, and also includes a motor, a reducer and a magnetic powder clutch 9 connected in sequence for driving the high-voltage support shaft 32 to rotate, and the output shaft of the magnetic powder clutch 9 is fixedly connected to the high-voltage support shaft 32.

[0054] 4. Interlayer paper feeding machine 4

[0055] like Fig. 9 As shown, the main structure of the interlayer paper unloading machine 4 adopts the existing technology, and two improvements are made to it, one is the connection method with the bottom plate 8, and the other is to add a magnetic powder clutch 9, so that the interlayer paper roll 43 rotates at a constant speed and the tension between it and the winding machine is kept stable. The interlayer paper unloading machine 4 includes a frame 41 and a unloading shaft 42. The frame 41 is slidably set on the bottom plate 8 through a linear guide rail 7. The unloading shaft 42 is an air expansion shaft in the prior art and is rotatably set on the frame 41. It also includes a motor, a reducer and a magnetic powder clutch 9 connected in sequence for driving the unloading shaft 42 to rotate, and the output shaft of the magnetic powder clutch 9 is fixedly connected to the unloading shaft 42.

[0056] When using this embodiment: this system is combined with a welding machine and a winding machine for winding the triangular core of a transformer. Since low-voltage wire, high-voltage wire or copper foil can be wound on the triangular core as needed, only one of them can be used when winding. In this embodiment, the low-voltage wire roll 18, the copper foil roll 203, the high-voltage wire roll 33, and the interlayer paper roll 43 can be installed on the low-voltage pay-off rack 1, the copper foil feeder 2, the high-voltage pay-off rack 3 and the interlayer paper feeder 4 respectively to wait for winding. If you choose to wind a low-voltage wire, push the copper foil feeder 2, the high-voltage pay-off rack 3 and the interlayer paper feeder 4 to a position that does not affect the low-voltage wire leading to the winding machine. After the low-voltage wire is wound around the guide shaft 15, it is overlapped on the guide roller 6 and enters the winding machine. When winding copper foil, push the high-voltage pay-off stand 3 and the interlayer paper feeder 4 to a position that does not affect the copper foil's access to the winding machine, and wind the copper foil on the guide roller 6 of the mobile stand 5 before entering the winding machine. Since it is necessary to ensure that insulating paper is wound between each layer of copper foil when winding copper foil, the copper foil feeder 2 is used in conjunction with the interlayer paper feeder 4, and a layer of interlayer paper is wound before a layer of copper foil is wound. When winding high-voltage wires, push the interlayer paper feeder 4 to a position that does not affect the high-voltage wire's access to the winding machine, and the frame 41 of the high-voltage pay-off stand 3 will adaptively change position along the linear guide rail 7 as the position of the high-voltage wire on the pay-off roll is adjusted to ensure the tightness of the winding.

[0057] It should be noted that the above is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A material unwinding rack assembly system for triangular core winding, characterized in that: It comprises a low-voltage pay-off stand, a copper foil pay-off machine, a high-voltage pay-off stand and an interlayer paper pay-off machine with the same discharge direction; the copper foil pay-off machine, the high-voltage pay-off stand and the interlayer paper pay-off machine are all slidably arranged on a bottom plate, a movable frame is also slidably arranged on the bottom plate, and a guide roller is rotatably arranged on the movable frame; the sliding direction of the copper foil pay-off machine, the high-voltage pay-off stand, the interlayer paper pay-off machine and the movable frame is perpendicular to the discharge direction.

2. A triangular core winding unwinding rack assembly system according to claim 1, characterized in that: The low-voltage pay-off rack includes a support frame, a low-voltage wire coil placement assembly and a guide arm. There are at least two wire coil placement assemblies, which include a low-voltage support shaft rotatably arranged on the support frame and a fixed disk fixed on the low-voltage support shaft for fixing the low-voltage wire coil; at least two guide shafts are rotatably arranged on the guide arm.

3. A triangular core winding unwinding rack assembly system according to claim 2, characterized in that: A brake disc is fixedly arranged at one end of the low-voltage support shaft in the low-voltage coil placement assembly, and a pneumatic stopper for clamping the brake disc is fixedly arranged on the support frame.

4. A triangular core winding unwinding rack assembly system according to any one of claims 1 to 3, characterized in that: The copper foil unloading machine includes a box body, a main shaft rotatably arranged on the box body, a driving device for driving the main shaft to rotate, a tensioning device arranged on the main shaft for tightening the copper foil roll, and a push-pull positioning device for driving the tensioning device to open and close; the push-pull positioning device includes a pull rod fixedly arranged on the tensioning device and a dynamic positioning device for driving the pull rod to move axially along the main shaft; a limit device for limiting the sliding position of the box body is provided on the bottom plate.

5. A combined unwinding rack system for triangular core winding according to claim 4, characterized in that: The box body is also rotatably connected with a rotating shaft, one end of which is driven to rotate by a power source, and the other end is fixed with a pressing arm, and the pressing arm is rotatably connected with a roller for pressing against the copper foil roll.

6. A combined unwinding rack system for triangular core winding according to claim 5, characterized in that: The driving device comprises a motor, a reducer, a magnetic powder clutch, a driving sprocket, a driven sprocket and a chain. The motor, the reducer and the magnetic powder clutch are connected in sequence. The driving sprocket is fixed on the magnetic powder clutch, and the driven sprocket is fixed on the main shaft.

7. A combined unwinding rack system for triangular core winding according to claim 6, characterized in that: The dynamic positioning device is any one of a first air cylinder, a hydraulic cylinder or an electric push rod.

8. A triangular core winding unwinding rack assembly system according to any one of claims 5 to 7, characterized in that: The power source connected with the rotating shaft comprises a second cylinder fixed on the box body and a pressure rod fixed on the rotating shaft, and the piston rod of the second cylinder is hinged to the end of the pressure rod.

9. A triangular core winding unwinding rack assembly system according to any one of claims 1-3, 5-7, characterized in that: The high-voltage pay-off frame includes a mounting frame slidably arranged on a bottom plate and a high-voltage support shaft rotatably arranged on the mounting frame, and also includes a motor, a reducer and a magnetic powder clutch connected in sequence for driving the high-voltage support shaft to rotate, and the output shaft of the magnetic powder clutch is fixedly connected to the high-voltage support shaft.

10. A combined unwinding rack system for triangular core winding according to claim 9, characterized in that: The interlayer paper unloading machine includes a frame slidably arranged on a bottom plate and a unloading shaft rotatably arranged on the frame, and also includes a motor, a reducer and a magnetic powder clutch connected in sequence for driving the unloading shaft to rotate, and the output shaft of the magnetic powder clutch is fixedly connected to the unloading shaft.

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