A large transformer coil demoulding device and method

Abstract

The invention discloses a large transformer coil demoulding device, which relates to the technical field of transformer coils, comprising a fixed rod and a bottom plate, wherein a hinged telescopic rod is hinged on the top of the bottom plate, an electric lift is arranged on the outer wall of the fixed rod, a connecting disk is fixedly connected to one side of the electric lift, a connecting piece is fixedly connected to one side of the connecting disk, a hollow shaft motor is fixedly connected to the top of the connecting piece, a rotating shaft is arranged on the inner wall of the hollow shaft motor, an electric control slider is fixedly connected to the outer wall of the rotating shaft, a slider is arranged above the electric control slider, and a demoulding mechanism is arranged on the top of the slider. By arranging the demoulding mechanism, two winding blocks at one place are synchronously brought close to each other, and the copper wire coil tightly wound on the outer wall of the winding block is synchronously demoulded horizontally and vertically, thereby avoiding the problem that when demoulding is performed by retracting in one direction at present, the demoulding is not thorough and is still partially tight, resulting in the problem of coil damage caused by forced demoulding.

Description

Technical Field

[0001] The invention relates to the technical field of transformer coils, and in particular to a large transformer coil demoulding device and method. Background Art

[0002] Transformer coil is a kind of coil, which is needed inside the transformer for operation. According to the number of phases, it is divided into single-phase transformer, which is used for single-phase loads and three-phase transformer groups; three-phase transformer, which is used to step up and down the voltage of the three-phase system;

[0003] A large transformer coil demoulding device and method in the patent application with publication number CN110970214A belongs to the technical field of transformer manufacturing. The technical scheme is: the suspension shaft is set at the top of the main beam; the main beam and the rotating beam are staggered to form a cross-combined beam, and the rotating shaft is set at the center of the cross-combined beam; the beam rotation adjustment device is set on the cross-combined beam; two adjustable movable columns are set on the main beam of the cross-combined beam through roller sliding, and the other two adjustable movable columns are set on the rotating beam of the cross-combined beam through roller sliding; the adjustable movable columns are connected to the cross-combined beam through the column synchronization adjustment device; the dovetail support plate is installed at the bottom of the adjustable movable column and is provided with a radial telescopic structure.

[0004] After the transformer coil is wound, it needs to be demolded. However, the current demolding molds are fixed parts, which are not conducive to the demolding of the coil. Forcibly pushing the coil and the mold apart with a hydraulic rod is likely to cause damage to the mold and the coil, affecting the subsequent coil quality and the use of the mold. Summary of the invention

[0005] In view of the deficiencies in the prior art, the present invention provides a large transformer coil demoulding device and method, which achieves the purpose of solving the above-mentioned problems.

[0006] To achieve the above objectives, the present invention is implemented through the following technical solutions: a large transformer coil demoulding device, comprising a fixed rod and a bottom plate, a hinged telescopic rod is hinged on the top of the bottom plate, an electric lift is arranged on the outer wall of the fixed rod, a connecting plate is fixedly connected to one side of the electric lift, a connecting piece is fixedly connected to one side of the connecting plate, a hollow shaft motor is fixedly connected to the top of the connecting piece, a rotating shaft is arranged on the inner wall of the hollow shaft motor, an electric control slider is fixedly connected to the outer wall of the rotating shaft, a slide plate is arranged above the electric control slider, and a demoulding mechanism is arranged on the top of the slide plate;

[0007] The demoulding mechanism comprises:

[0008] A winding block, wherein a slide bar is slidably connected to the bottom of the winding block, the bottom of the slide bar is fixedly connected to the top of the slide plate, the top of the slide bar is fixedly connected to a connecting rod, and the winding block is used to tighten the coil;

[0009] A fixed plate, one end of the connecting rod is fixedly connected to the fixed plate, the fixed plate is a circular ring structure, one side of the fixed plate is fixedly connected to a spring, one end of the spring is fixedly connected to one side of the winding block, the inner wall of the fixed plate is slidably connected to a sliding sleeve, one end of the sliding sleeve is fixedly connected to one side of the winding block.

[0010] Preferably, the inner wall of the sliding sleeve is slidably connected to a multi-section telescopic rod, the outer wall of the multi-section telescopic rod is fixedly connected to a hollow bar, one end of the hollow bar is fixedly connected to a connecting block, the interior of the multi-section telescopic rod is connected to the interior of the hollow bar, and hydraulic oil is arranged inside the multi-section telescopic rod.

[0011] Preferably, a first connecting rod is fixedly connected to one side of the hollow bar, one end of the first connecting rod is fixedly connected to a long plate, the interior of the hollow bar is connected to the interior of the connecting block, the interior of the connecting block is connected to the interior of the first connecting rod, and the interior of the first connecting rod is connected to the interior of the long plate.

[0012] Preferably, a second connecting rod is fixedly connected to one side of the long board, a push rod is fixedly connected to one end of the second connecting rod, a piston is fixedly connected to one end of the push rod, a hollow sleeve is slidably connected to the outer wall of the push rod, a sliding groove is provided on the inner wall of the hollow sleeve, the outer wall of the piston is slidably connected to the inner wall of the sliding groove, and the outer wall of the push rod is slidably connected to the inner wall of one side of the hollow sleeve.

[0013] Preferably, a connecting hole is opened on the inner wall of the piston, the interior of the connecting hole is connected to the interior of the piston, the interior of the piston is connected to the interior of the push rod, the interior of the push rod is connected to the interior of the second connecting rod, and the interior of the second connecting rod is connected to the interior of the long plate.

[0014] Preferably, a vent hole is opened on one side of the hollow sleeve, the interior of the vent hole is communicated with the interior of the hollow sleeve, one end of the fixed shaft is fixedly connected to a bearing, and the inner wall of the bearing is rotatably connected to the outer wall of the rotating shaft.

[0015] Preferably, the outer wall of the winding block is provided with an auxiliary mechanism, the auxiliary mechanism includes a telescopic plate, both ends of the telescopic plate are fixedly connected to the outer wall of the winding block, the inner wall of the winding block is fixedly connected with a connecting column, and the interior of the connecting column is connected to the interior of the winding block.

[0016] Preferably, a groove is provided on the outer wall of the winding block, an air-injection hole is provided on the inner wall of the groove, and the interior of the air-injection hole is connected with the interior of the connecting column.

[0017] A large transformer coil demoulding device comprises the following steps:

[0018] Step 1: When in use, wrap the copper wire around the outer wall of the winding block, then start the hollow shaft motor on the connecting piece to control the rotation of the shaft, and when the shaft rotates, the electric control slider is driven to rotate together;

[0019] Step 2: When the electric control slider rotates, the slide plate and the winding block on the slide plate are driven to rotate together, so that the winding work of the coil is completed through the rotation of the slide plates and the winding blocks at both ends of the electric control slider;

[0020] The third step: After the winding is completed, when the coil needs to be demoulded, the electric control slider is started to control the slide plates at both ends to move toward the middle, and the slide plates bring the winding blocks on it to move synchronously to the middle of the electric control slider, so that the two winding blocks are close to each other, and then the winding blocks tightened at both ends of the electric control slider are separated from the coil. At the same time, the four articulated telescopic rods are lifted, and the bottom of the coil is supported by the top of the articulated telescopic rods, and then the overall rise is controlled by starting the elevator to separate the coil from the mold, and then the coil is removed.

[0021] The present invention provides a large transformer coil demoulding device and method, which has the following beneficial effects:

[0022] 1. The present invention sets a demoulding mechanism, pulls the left and right winding blocks closer to each other through the sliding sleeve, and the winding blocks slide within a limited position above the sliding bar at the bottom, so that when the coil is untied and demoulded as the sliding plate drives the winding blocks to slide closer to each other on the electric control slider, the two winding blocks at one place are also brought closer to each other, and the copper wire coil tightly wound on the outer wall of the winding block is demoulded synchronously in the horizontal and vertical directions, avoiding the problem of coil damage caused by forced demoulding due to incomplete demoulding and partial tension during demoulding in the current unidirectional retraction.

[0023] 2. The present invention provides a demoulding mechanism and controls the different moving distances of the slide plate on the electric control slide, so that the winding blocks on the slide plate can be controlled to move to different positions, so that the farther the winding blocks at both ends extend, the larger the interval between the two winding blocks at one end. Therefore, by expanding the interval between the two slide plates, the interval between the two winding blocks at one place can be automatically and proportionally expanded to adapt to the winding work of different coil sizes.

[0024] 3. The present invention sets an auxiliary mechanism to spray outwards through the air jet holes outside the connecting column, so that in the process of retracting and demolding the winding block, the pressure of the air jet holes can be used in real time to evenly release the adhesion between the coil and the inner wall of the groove. By giving the coil a certain outward pressure, the problem of the copper wire of the coil being wound tightly and adhering to the inner wall of the groove can be avoided, and the problem of deformation and bending due to adhesion during the demolding process can also be avoided.

[0025] 4. The present invention provides an auxiliary mechanism and utilizes the air blown out of the air jet hole to quickly and evenly dissipate the high temperature generated by the friction of the coil being squeezed and wound tightly in the groove, thereby avoiding the problem that after the coil is demolded by the winding block, the coil is quickly deformed due to the high temperature before cooling after being released, thereby ensuring the uniformity and stability of the shape of the coil after demolding, and then ensuring that the quality of the coil is not affected.

[0026] 5. The present invention sets an auxiliary mechanism. Since the winding block is demoulded in both horizontal and vertical directions, a groove can be set to clamp the coil therein, so that it is more stable during winding. When the coil is wound, it can be embedded in the groove more tightly and restrictively to ensure the consistency of the coil winding. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the structure of the present invention;

[0028] Figure 2 It is a structural schematic diagram of the electric control slider of the present invention;

[0029] Figure 3 The structure of the demoulding mechanism of the present invention is shown in FIG. Figure 1 ;

[0030] Figure 4 The structure of the demoulding mechanism of the present invention is shown in FIG. Figure 2 ;

[0031] Figure 5 The structure of the demoulding mechanism of the present invention is shown in FIG. Figure 3 ;

[0032] Figure 6 For the present invention Figure 3 A magnified image of point A;

[0033] Figure 7 For the present invention Figure 3 A magnified view of point B;

[0034] Figure 8 It is a structural schematic diagram of the piston of the present invention;

[0035] Fig. 9 The motion state of the demoulding mechanism of the present invention is Figure 1 ;

[0036] Fig.10 The motion state of the demoulding mechanism of the present invention is Figure 2 ;

[0037] Fig.11 It is a structural schematic diagram of the auxiliary mechanism of the present invention;

[0038] Fig.12 It is the motion state diagram of the auxiliary mechanism of the present invention.

[0039] In the figure: 1 fixed rod, 2 electric lift, 3 demoulding mechanism, 301 winding block, 302 slide bar, 303 connecting rod, 304 fixed plate, 305 spring, 306 sliding sleeve, 307 multi-section telescopic rod, 308 hollow bar, 309 connecting block, 310 first connecting rod, 311 long plate, 312 second connecting rod, 313 push rod, 314 hollow sleeve, 315 fixed shaft, 316 bearing, 317 piston, 318 connecting hole, 319 vent, 4 auxiliary mechanism, 401 telescopic plate, 402 connecting column, 403 groove, 404 air injection hole, 5 connecting plate, 6 connecting piece, 7 hollow shaft motor, 8 rotating shaft, 9 electric control slider, 10 slide plate, 11 hinged telescopic rod, 12 bottom plate. DETAILED DESCRIPTION

[0040] Example 1: Please refer to Figure 1-4 The present invention provides a technical solution: a large transformer coil demoulding device, comprising a fixed rod 1 and a bottom plate 12, a hinged telescopic rod 11 is hinged on the top of the bottom plate 12, an electric lifter 2 is arranged on the outer wall of the fixed rod 1, a connecting plate 5 is fixedly connected to one side of the electric lifter 2, a connecting member 6 is fixedly connected to one side of the connecting plate 5, a hollow shaft motor 7 is fixedly connected to the top of the connecting member 6, a rotating shaft 8 is arranged on the inner wall of the hollow shaft motor 7, an electric control slider 9 is fixedly connected to the outer wall of the rotating shaft 8, a slide plate 10 is arranged above the electric control slider 9, and a demoulding mechanism 3 is arranged on the top of the slide plate 10;

[0041] The demoulding mechanism 3 comprises:

[0042] A winding block 301, a sliding bar 302 is slidably connected to the bottom of the winding block 301, the bottom of the sliding bar 302 is fixedly connected to the top of the slide plate 10, and a connecting rod 303 is fixedly connected to the top of the sliding bar 302. The winding block 301 is used to tighten the coil;

[0043] A fixing plate 304, one end of the connecting rod 303 is fixedly connected to the fixing plate 304, the fixing plate 304 is a circular ring structure, one side of the fixing plate 304 is fixedly connected to a spring 305, one end of the spring 305 is fixedly connected to one side of the winding block 301, the inner wall of the fixing plate 304 is slidably connected to a sliding sleeve 306, one end of the sliding sleeve 306 is fixedly connected to one side of the winding block 301;

[0044] The copper wire is wound around the outer wall of the winding block 301, and then the hollow shaft motor 7 on the connecting member 6 is started to control the rotation of the shaft 8. When the shaft 8 rotates, the electric control slider 9 is driven to rotate together. When the electric control slider 9 rotates, the slide plate 10 on the electric control slider 9 and the winding block 301 on the slide plate 10 are driven to rotate together, so that the winding work of the coil is completed by the rotation of the slide plates 10 at both ends of the electric control slider 9 and the winding block 301;

[0045] After winding is completed, when the coil needs to be demoulded, the electric control slider 9 is started to control the slide plates 10 at both ends thereof to move toward the middle, and the slide plates 10 bring the winding blocks 301 thereon to move toward the middle of the electric control slider 9 synchronously, so that the two winding blocks 301 are close to each other, and then the winding blocks 301 tightened at both ends of the electric control slider 9 are separated from the contact with the coil, so that the coil can be removed;

[0046] Example 2: Please refer to Figure 1-10 On the basis of the first embodiment, the present invention provides a technical solution: the inner wall of the sliding sleeve 306 is slidably connected to a multi-section telescopic rod 307, the outer wall of the multi-section telescopic rod 307 is fixedly connected to a hollow bar 308, one end of the hollow bar 308 is fixedly connected to a connecting block 309, and the interior of the multi-section telescopic rod 307 is connected to the interior of the hollow bar 308.

[0047] A first connecting rod 310 is fixedly connected to one side of the hollow bar 308, and a long plate 311 is fixedly connected to one end of the first connecting rod 310. The interior of the hollow bar 308 is connected to the interior of the connecting block 309, the interior of the connecting block 309 is connected to the interior of the first connecting rod 310, and the interior of the first connecting rod 310 is connected to the interior of the long plate 311.

[0048] A second connecting rod 312 is fixedly connected to one side of the long plate 311, a push rod 313 is fixedly connected to one end of the second connecting rod 312, a piston 317 is fixedly connected to one end of the push rod 313, a hollow sleeve 314 is slidably connected to the outer wall of the push rod 313, a sliding groove is provided on the inner wall of the hollow sleeve 314, the outer wall of the piston 317 is slidably connected to the inner wall of the sliding groove, and the outer wall of the push rod 313 is slidably connected to the inner wall of one side of the hollow sleeve 314.

[0049] A connecting hole 318 is formed on the inner wall of the piston 317 , the interior of the connecting hole 318 is connected to the interior of the piston 317 , the interior of the piston 317 is connected to the interior of the push rod 313 , the interior of the push rod 313 is connected to the interior of the second connecting rod 312 , and the interior of the second connecting rod 312 is connected to the interior of the long plate 311 .

[0050] A vent hole 319 is provided on one side of the hollow sleeve 314, and the interior of the vent hole 319 is connected to the interior of the hollow sleeve 314. A bearing 316 is fixedly connected to one end of the fixed shaft 315, and the inner wall of the bearing 316 is rotatably connected to the outer wall of the rotating shaft 8.

[0051] When the slide plate 10 controls the winding block 301 above it to move to the middle position of the electric control slide block 9, the winding block 301 will move with the sliding sleeve 306 in the inner wall and the multi-section telescopic rod 307 on the inner wall of the sliding sleeve 306. When the multi-section telescopic rod 307 is pushed by the winding block 301, the hollow bar 308 and the connecting block 309 fixedly connected to one side of the multi-section telescopic rod 307 are pushed to move together. The connecting block 309 moves with the long plate 311 through the first connecting rod 310, and the long plate 311 pushes the push rod 313 through the second connecting rod 312. Since the fixed shaft 315 is limited by the bearing 316, the fixed shaft 315 and the hollow sleeve 314 cannot be pushed. Therefore, when the push rod 313 moves, it will be pushed to slide in the inner wall of the hollow sleeve 314, and the push rod 313 slides on the inner wall of the hollow sleeve 314. When the piston 317 slides in the inner wall of the hollow sleeve 314, the area where the connecting hole 318 is located will form a negative pressure. Because the area on the inner wall of the hollow sleeve 314 facing the connecting hole 318 is sealed by the hollow sleeve 314, the internal air cannot be connected to the outside of the hollow sleeve 314. Because the inside of the connecting hole 318 is connected to the first connecting rod 310, the connecting block 309, the hollow bar 308, and the multi-section telescopic rod 307 through the push rod 313, the second connecting rod 312, and the long plate 311, the liquid in the multi-section telescopic rod 307 will be drawn into the inner wall of the hollow sleeve 314 where the negative pressure is formed, and the air in the right area of ​​the hollow sleeve 314 is squeezed by the piston 317 and discharged to the outside of the hollow sleeve 314 through the vent 319.

[0052] As the push rod 313 pushes the piston 317 to move toward the inner wall of the hollow sleeve 314, the liquid on the inner wall of the multi-section telescopic rod 307 is sucked into the hollow sleeve 314, so that the multi-section telescopic rod 307 and the sliding sleeve 306 are shortened as a whole. When the multi-section telescopic rod 307 and the sliding sleeve 306 are shortened, the sliding sleeve 306 pulls the left and right winding blocks 301 closer to each other, and the winding blocks 301 slide on the bottom slide bar 302 to limit the sliding, so that when the slide plate 10 drives the winding blocks 301 to slide closer to each other on the electric control slider 9 to untie and demould the coil, the two winding blocks 301 at one place are also synchronously brought closer to each other, and the copper wire coil tightly wound on the outer wall of the winding block 301 is synchronously demolded horizontally and vertically, avoiding the problem of incomplete demoulding and still partially tight when demoulding in the current unidirectional retraction, resulting in coil damage caused by forced demoulding;

[0053] By controlling the different moving distances of the slide plate 10 on the electric control slide plate 9, the winding block 301 on the slide plate 10 can be controlled to move to different positions, so that the farther the winding blocks 301 at both ends extend, the larger the interval between the two winding blocks 301 at one end. Therefore, by expanding the interval between the two slide plates 10, when the interval between the two slide plates 10 is expanded, the interval between the two winding blocks 301 is also expanded. Similarly, when the interval between the two slide plates 10 is reduced, the interval between the two winding blocks 301 is also reduced. That is, proportional automatic expansion and reduction is achieved to adapt to the winding work of coils of different sizes.

[0054] Example 3: Please refer to Figure 1-12 On the basis of Embodiment 1 and Embodiment 2, the present invention provides a technical solution: an auxiliary mechanism 4 is provided on the outer wall of the winding block 301, and the auxiliary mechanism 4 includes a telescopic plate 401, and both ends of the telescopic plate 401 are fixedly connected to the outer wall of the winding block 301, and a connecting column 402 is fixedly connected to the inner wall of the winding block 301, and the interior of the connecting column 402 is connected to the interior of the winding block 301.

[0055] The outer wall of the winding block 301 is provided with a groove 403, the inner wall of the groove 403 is provided with an air injection hole 404, and the inside of the air injection hole 404 is connected with the inside of the connecting column 402;

[0056] When the two winding blocks 301 at one place are close to each other and the coil in the groove 403 is demoulded, the two winding blocks 301 will squeeze the telescopic plate 401, so that the telescopic plate 401 is squeezed by the air inside through the winding block 301 into the connecting column 402, and is ejected outward through the air jet hole 404 outside the connecting column 402, so that in the process of the winding block 301 retracting and demoulding, the pressure of the air jet hole 404 ejecting the air outward is used in real time to evenly release the adhesion between the coil and the inner wall of the groove 403, and by giving the coil a certain outward pressure, the problem of the copper wire of the coil being wound tightly and adhering to the inner wall of the groove 403 is avoided, and the problem of deformation and bending caused by adhesion during the demoulding process is also avoided;

[0057] At the same time, the air blown out from the air jet hole 404 is used to quickly and evenly dissipate the high temperature generated by the friction of the coil being squeezed and wound tightly in the groove 403, thereby avoiding the problem that the coil is quickly deformed before cooling due to the high temperature after being released after the coil is demoulded by the winding block 301, thereby ensuring the uniformity and stability of the shape of the coil after demoulding, and then ensuring that the quality of the coil is not affected;

[0058] Since the winding block 301 is demoulded in both the vertical and horizontal directions in the horizontal plane, a groove 403 can be provided to insert the coil therein, so that the winding is more stable. When the coil is wound, it can be more tightly and confinedly embedded in the groove 403 to ensure the consistency of the coil winding.

[0059] A demoulding method for large transformer coils:

[0060] Step 1: When in use, the copper wire is wound around the outer wall of the winding block 301, and then the hollow shaft motor 7 on the connecting member 6 is started to control the rotation of the shaft 8, and the rotation of the shaft 8 drives the electric control slider 9 to rotate together;

[0061] Step 2: When the electric control slider 9 rotates, the slide plate 10 on the electric control slider 9 and the winding block 301 on the slide plate 10 are driven to rotate together, so that the winding work of the coil is completed through the rotation of the slide plates 10 and the winding block 301 at both ends of the electric control slider 9;

[0062] Step 3: After the winding is completed, when the coil needs to be demoulded, the electric control slider 9 is started to control the slide plates 10 at both ends to move toward the middle, and the slide plate 10 brings the winding blocks 301 thereon to move synchronously toward the middle of the electric control slider 9, so that the two winding blocks 301 are close to each other, and then the winding blocks 301 tightened at both ends of the electric control slider 9 are separated from the contact with the coil, and at the same time, the four articulated telescopic rods 11 are lifted, and the top of the articulated telescopic rods 11 is used to support the bottom of the coil, and then the elevator 2 is started to control the overall rise, so as to separate the coil from the mold, and then the coil is removed.

[0063] The above are only preferred specific implementation modes of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A large transformer coil demoulding device, comprising a fixed rod (1) and a bottom plate (12), the top of the bottom plate (12) being hinged with a hinged telescopic rod (11), an outer wall of the fixed rod (1) being provided with an electric lifter (2), one side of the electric lifter (2) being fixedly connected to a connecting plate (5), one side of the connecting plate (5) being fixedly connected to a connecting piece (6), the top of the connecting piece (6) being fixedly connected to a hollow shaft motor (7), the inner wall of the hollow shaft motor (7) being provided with a rotating shaft (8), characterized in that: An electric control slider (9) is fixedly connected to the outer wall of the rotating shaft (8), a slide plate (10) is arranged above the electric control slider (9), and a demoulding mechanism (3) is arranged on the top of the slide plate (10); The demoulding mechanism (3) comprises: A winding block (301), wherein the bottom of the winding block (301) is slidably connected to a slide bar (302), the bottom of the slide bar (302) is fixedly connected to the top of the slide plate (10), the top of the slide bar (302) is fixedly connected to a connecting rod (303), and the winding block (301) is used to tighten the coil; A fixed plate (304), one end of the connecting rod (303) is fixedly connected to the fixed plate (304), the fixed plate (304) is a circular ring structure, one side of the fixed plate (304) is fixedly connected to a spring (305), one end of the spring (305) is fixedly connected to one side of the winding block (301), the inner wall of the fixed plate (304) is slidably connected to a sliding sleeve (306), one end of the sliding sleeve (306) is fixedly connected to one side of the winding block (301); The inner wall of the sliding sleeve (306) is slidably connected to a multi-section telescopic rod (307), the outer wall of the multi-section telescopic rod (307) is fixedly connected to a hollow bar (308), one end of the hollow bar (308) is fixedly connected to a connecting block (309), the interior of the multi-section telescopic rod (307) is connected to the interior of the hollow bar (308), and hydraulic oil is provided inside the multi-section telescopic rod (307); A first connecting rod (310) is fixedly connected to one side of the hollow bar (308), a long plate (311) is fixedly connected to one end of the first connecting rod (310), the interior of the hollow bar (308) is connected to the interior of the connecting block (309), the interior of the connecting block (309) is connected to the interior of the first connecting rod (310), and the interior of the first connecting rod (310) is connected to the interior of the long plate (311); A second connecting rod (312) is fixedly connected to one side of the long plate (311), a push rod (313) is fixedly connected to one end of the second connecting rod (312), a piston (317) is fixedly connected to one end of the push rod (313), an outer wall of the push rod (313) is slidably connected to a hollow sleeve (314), a sliding groove is provided on the inner wall of the hollow sleeve (314), an outer wall of the piston (317) is slidably connected to the inner wall of the sliding groove, and an outer wall of the push rod (313) is slidably connected to the inner wall of one side of the hollow sleeve (314); A connecting hole (318) is formed on the inner wall of the piston (317); the interior of the connecting hole (318) is connected to the interior of the piston (317); the interior of the piston (317) is connected to the interior of the push rod (313); the interior of the push rod (313) is connected to the interior of the second connecting rod (312); and the interior of the second connecting rod (312) is connected to the interior of the long plate (311).

2. A large transformer coil demoulding device according to claim 1, characterized in that: A vent hole (319) is provided on one side of the hollow sleeve (314), the interior of the vent hole (319) is communicated with the interior of the hollow sleeve (314), a fixed shaft (315) is fixedly connected to one side of the hollow sleeve (314), one end of the fixed shaft (315) is fixedly connected to a bearing (316), and the inner wall of the bearing (316) is fixedly connected to the outer wall of the rotating shaft (8).

3. A large transformer coil demoulding device according to claim 2, characterized in that: The outer wall of the winding block (301) is provided with an auxiliary mechanism (4), the auxiliary mechanism (4) comprising a telescopic plate (401), both ends of the telescopic plate (401) being fixedly connected to the outer wall of the winding block (301), the inner wall of the winding block (301) being fixedly connected with a connecting column (402), the interior of the connecting column (402) being connected to the interior of the winding block (301).

4. A large transformer coil demoulding device according to claim 3, characterized in that: The outer wall of the winding block (301) is provided with a groove (403), the inner wall of the groove (403) is provided with an air injection hole (404), and the interior of the air injection hole (404) is connected to the interior of the connecting column (402).

5. A large transformer coil demoulding method, based on a large transformer coil demoulding device according to any one of claims 1 to 4, characterized in that: The following steps are involved: Step 1: When in use, the copper wire is wound around the outer wall of the winding block (301), and then the hollow shaft motor (7) on the connecting piece (6) is started to control the rotation of the shaft (8), and when the shaft (8) rotates, the electric control slider (9) is driven to rotate together; Step 2: When the electric control slider (9) rotates, the slide plate (10) on the electric control slider (9) and the winding block (301) on the slide plate (10) are driven to rotate together, so that the coil winding work is completed through the rotation of the slide plates (10) and the winding blocks (301) at both ends of the electric control slider (9); Step 3: After the winding is completed, when the coil needs to be demoulded, the electric control slider (9) is started to control the slide plates (10) at both ends thereof to move toward the middle, and the slide plates (10) bring the winding blocks (301) thereon to move synchronously toward the middle of the electric control slider (9), so that the two winding blocks (301) are close to each other, and then the winding blocks (301) tightened at both ends of the electric control slider (9) are separated from the contact with the coil, and at the same time, the four hinged telescopic rods (11) are lifted, and the top of the hinged telescopic rods (11) are used to support the bottom of the coil, and then the elevator (2) is started to control the overall rise, so that the coil is separated from the mold, and then the coil is removed.

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