Vertical winding machine for dry-type transformer

Abstract

The invention relates to the technical field of coil winding machines, and discloses a dry-type transformer vertical winding machine which comprises a main shaft fixedly arranged relative to the ground, a pay-off reel installed on the main shaft, a shaping mold, a guide mechanism, a take-up mechanism, a rack and a traction mechanism. The rack comprises a supporting frame, a rotating frame and a driving mechanism, the supporting frame is supported on the ground, the rotating frame is rotationally connected to the supporting frame, and the driving mechanism is used for driving the rotating frame to rotate; the shaping mold is fixed on the main shaft; the traction mechanism comprises a belt and a rotating wheel, the rotating wheel is arranged on the rotating frame, one end of the belt sleeves the rotating wheel, and the other end of the belt sleeves the shaping mold; the guide mechanism is installed on the rotating frame and used for guiding the wire led out of the pay-off reel to the position between the traction mechanism and the shaping mold so that the traction mechanism and the shaping mold can clamp the wire. And compared with a traditional segmented layer type winding, the segmented layer type winding has the advantages that a segmented commutation process is eliminated, and inter-segment wire welding spots are cancelled.

Description

Technical Field

[0001] This invention relates to the technical field of coil winding machines, and more particularly to a dry-type transformer vertical winding machine. Background Technology

[0002] The high-voltage coils of dry-type distribution transformers are typically wound using horizontal winding machines. These machines employ a segmented winding method. Taking a four-segment configuration as an example, the winding machine first winds the first segment, with the winding direction aligned with the equipment's winding direction (referred to here as left-hand winding). After this, the third segment is wound, with the winding direction matching the first segment. After completing the first and third segments, the mold and coils are hoisted and reversed for installation. The second and fourth segments are then wound. Although the winding direction of the second and fourth segments remains aligned with the equipment's winding direction, it is opposite to that of the first and third segments (right-hand winding). Finally, the leads left from the first, second, third, and fourth segments are welded together, completing the winding process.

[0003] The horizontal winding machine relies on the overall hoisting and reversing operation of the mold and coil during the production process, and a single reversal takes at least 15 minutes; in addition, the segment connection points require additional welding treatment, which reduces the coil winding efficiency by more than 10%. Summary of the Invention

[0004] In view of the shortcomings of the prior art, the purpose of this invention is to provide a dry-type transformer vertical winding machine to solve one or more problems in the prior art.

[0005] To achieve the above objectives, the technical solution of the present invention is as follows: A dry-type transformer vertical winding machine includes a main shaft fixed relative to the ground, a wire feeding reel mounted on the main shaft, a shaping mold located below the wire feeding reel, a guiding mechanism located between the wire feeding reel and the shaping mold, a wire take-up mechanism located below the shaping mold, a frame, and a traction mechanism. The frame includes a support frame, a rotating frame, and a drive mechanism. The support frame is supported on the ground, the rotating frame is rotatably connected to the support frame, and the drive mechanism is used to drive the rotation of the rotating frame. The wire reel is used to store wires; The shaping mold is fixed on the main shaft; The traction mechanism includes a belt, a pulley, and a tensioning assembly. The pulley is mounted on a rotating frame, one end of the belt is fitted onto the pulley, and the other end of the belt is fitted onto a shaping mold. The tensioning assembly is used to tension the belt. The guiding mechanism is mounted on the rotating frame and is used to guide the wire drawn from the wire feeding reel between the traction mechanism and the shaping mold so that the traction mechanism and the shaping mold clamp the wire. The take-up mechanism includes a coil inner mold, which is configured to rotate synchronously with the main shaft.

[0006] Furthermore, the shaping mold includes a connecting plate fixed on the main shaft. The connecting plate is provided with two bases, which are located on both sides of the main shaft. Multiple slide rails distributed around the main shaft are installed on the bases. One end of each slide rail faces the main shaft, and the other end of each slide rail is away from the main shaft. Each slide rail is slidably connected with an abutment block. The end of the belt away from the tensioning component is sleeved on the side of the multiple abutment blocks opposite to the main shaft.

[0007] Furthermore, the two bases are slidably connected to the connecting plate, and the sliding directions of the two bases are the same and parallel to the radial direction of the main shaft.

[0008] Furthermore, the shaping mold also includes an elastic band, which is sleeved on the side wall of all the abutment blocks away from the main shaft, and the end of the belt away from the tensioning assembly is sleeved on the side of the elastic band away from the abutment block.

[0009] Furthermore, the take-up mechanism also includes a tray and a stand below the inner coil mold. The tray is fitted over the inner coil mold, and the inner coil mold is detachably connected to the main shaft. The stand has a channel for the tray and the inner coil mold to pass through.

[0010] Furthermore, the take-up mechanism also includes a lifting screw, which is rotatably connected to the upright and arranged parallel to the main shaft. A lifting platform is threaded onto the lifting screw, and the lifting platform is detachably connected to the tray. The tray and the inner mold of the coil are detachably connected.

[0011] Furthermore, the guiding mechanism includes multiple feed rollers and multiple straightening rollers. The multiple straightening rollers are arranged sequentially at the belt inlet along the wire transmission direction, and the multiple straightening rollers are arranged alternately on both sides of the belt. The circumferential arc surface of the straightening roller is tangent to the side surface of the belt inlet. The multiple feed rollers are spirally distributed between the feed reel and the straightening rollers, and both the feed rollers and the straightening rollers are arranged on the rotating frame.

[0012] Furthermore, the tensioning assembly includes an elastic element, a sliding frame, and a sliding block. The sliding frame is fixed on the rotating frame, and the sliding block is slidably connected to the sliding frame. The sliding direction of the sliding block is parallel to the radial direction of the main shaft. The two ends of the elastic element are respectively connected to the sliding block and the frame. The rotating wheel is rotatably connected to the sliding block, and the end of the belt away from the main shaft is sleeved on the rotating wheel.

[0013] Compared with the prior art, the beneficial technical effects of the present invention are as follows: 1. Winding is achieved by using a mold that rotates around the center, resulting in an alternating spiral stacking pattern. Compared with traditional segmented layer windings, this eliminates the segmented commutation process, removes inter-segment solder joints, improves winding efficiency, and reduces the risk of failure.

[0014] This winding machine uses a spiral feeding method and is compatible with both flat and round wires; it also uses an adjustable shaping die to produce both oblong and round coils.

[0015] By using a fixed-interval dropping method, the amount of wire deformation during dropping is fixed, and the time spent falling and twisting is reduced, thus avoiding wire twisting and overlapping. Attached Figure Description

[0016] Figure 1 A schematic diagram of the overall structure of a dry-type transformer vertical winding machine provided in an embodiment of the present invention is shown.

[0017] Figure 2 The diagram shows a top view of a dry-type transformer vertical winding machine provided in an embodiment of the present invention.

[0018] Figure 3 The diagram shows the structure of the guiding mechanism and the take-up mechanism provided in the embodiment of the present invention.

[0019] Figure 4 A schematic diagram of the feed roller distribution provided in an embodiment of the present invention is shown.

[0020] Figure 5 A schematic diagram of the shaping mold provided in an embodiment of the present invention is shown when the bases are close to each other.

[0021] Figure 6 A schematic diagram of the structure between the base and the connecting plate provided in an embodiment of the present invention is shown.

[0022] Figure 7 A schematic diagram of the tensioning assembly provided in an embodiment of the present invention is shown.

[0023] Figure 8 A schematic diagram of the shaping mold provided in an embodiment of the present invention is shown when the bases are far apart.

[0024] Reference numerals: 1. Frame; 11. Support frame; 12. Rotating frame; 13. Gear ring; 14. Gear; 2. Main shaft; 3. Wire feeding reel; 4. Guide mechanism; 41. Feed roller; 42. Straightening roller; 5. Traction mechanism; 51. Belt; 52. Rotary wheel; 53. Elastic element; 54. Sliding frame; 55. Sliding block; 6. Shaping mold; 61. Connecting plate; 62. Base; 63. Slide rail; 64. Abutment block; 65. Elastic belt; 66. Hand crank screw; 7. Wire take-up mechanism; 71. Stand; 72. Lifting platform; 73. Lifting screw; 74. Tray; 75. Coil inner mold. Detailed Implementation

[0025] A vertical winding machine for dry-type transformers, see [link / reference] Figure 1It includes a main shaft 2 fixed relative to the ground, a wire feeding reel 3 mounted on the main shaft 2, a shaping mold 6 located below the wire feeding reel 3, a guide mechanism 4 located between the wire feeding reel 3 and the shaping mold 6, a take-up mechanism 7 located below the shaping mold 6, a frame 1, and a traction mechanism 5.

[0026] See Figure 1 , Figure 2 The frame 1 includes a support frame 11, a rotating frame 12, and a drive mechanism. The support frame 11 is supported on the ground, and the rotating frame 12 is rotatably connected to the support frame 11. The rotating frame 12 has an annular cross-section in the horizontal direction. An annular gear ring 13 is fixed on the inner side wall of the rotating frame 12. A gear 14 that meshes with the gear ring 13 is fixed on the support frame 11. Multiple mounting parts are fixed on the top of the rotating frame 12, and the multiple mounting parts are evenly spaced around the main shaft 2 on the rotating frame 12. The drive mechanism is used to drive the gear 14 to rotate. In this embodiment, the drive mechanism is a motor, which is fixed on the support frame 11, and the output shaft of the motor is coaxial with the gear 14.

[0027] The support frame 11 and the rotating frame 12 surround a production space, and a ground passage for entering and exiting the production space is left on the side wall of the support frame 11. The main shaft 2, the wire feeding reel 3, the shaping mold 6, the guiding mechanism 4, the wire taking-up mechanism 7, and the traction mechanism 5 are all located in the production space.

[0028] The lower end of the spindle 2 needs to be provided with a placement space communicating with the ground channel, so that the spindle 2 maintains a sufficient distance from the ground, preventing the lower end of the spindle 2 from being directly fixed to the ground. In this embodiment, the spindle 2 includes an upper section and a lower section, which are detachably connected. The upper section of the spindle 2 is fixed to the workshop ceiling or an additional mounting bracket. When the lower section of the spindle 2 is connected to the upper section, the entire spindle 2 is fixed relative to the ground; when the lower section and the upper section are separated, the lower section can move downwards to increase the distance between it and the upper section, allowing the pay-off reel 3 to be fitted onto the top of the lower section.

[0029] The pay-off reel 3 is used to store the wire. The pay-off reel 3 is equipped with an active braking structure, which in this embodiment is a pneumatic brake disc. The purpose of this active braking structure is to prevent the pay-off reel 3 from continuing to rotate due to inertia and releasing excess wire at the end of the winding process, thus avoiding the need for rewinding.

[0030] See Figure 1 , Figure 3 The guiding mechanism 4 includes multiple feed rollers 41 and a set of straightening rollers 42. The feed rollers 41 are all rotatably connected to the mounting portion provided by the rotating frame 12, and the straightening rollers 42 are also arranged on the rotating frame 12. The set of straightening rollers 42 can be three straightening rollers 42 or five straightening rollers 42.

[0031] See Figure 3Multiple straightening rollers 42 are arranged sequentially at the inlet of the belt 51 along the transmission direction of the guide wire, and the multiple straightening rollers 42 are arranged alternately on both sides of the belt 51, with the circumferential arc surface of the straightening rollers 42 being tangent to the side surface of the belt 51 inlet.

[0032] See Figure 4 Multiple feed rollers 41 are spirally distributed between the pay-off reel 3 and the straightening rollers 42. This allows the wire to be drawn out of the pay-off reel 3 in a spiraling downward motion, gradually moving away from the main shaft 2. Then, it spirals downward around the main shaft 2 with its maximum rotation diameter for nearly one revolution. Finally, it spirals downward and gradually moves closer to the main shaft 2 before entering a set of straightening rollers 42. The maximum rotation diameter is determined by adding a preset distance to the maximum diagonal distance of the shaping mold 6 as a reference, which helps to prevent interference between the shaping mold 6 and the wire during operation.

[0033] Through the action of the feed roller 41 and the straightening roller 42, the wire is axially translated along the main shaft 2 and enters between the shaping mold 6 and the traction mechanism 5. The wire only undergoes elastic deformation in the thickness direction and has no torsional deformation, which is compatible with the winding requirements of both round and flat wire structures.

[0034] See Figure 1 , Figure 5 The forming mold 6 includes a connecting plate 61 and two bases 62. The connecting plate 61 is a cuboid structure, parallel to the ground, and its center is fixed to the main shaft 2. Both bases 62 are located on the ground-facing side of the connecting plate 61, and are slidably connected to both sides of the connecting plate 61. The sliding direction of the two bases 62 is the same and parallel to the radial direction of the main shaft 2. The bases 62 are also parallel to the ground, and their cross-section is semi-circular. The curved sides of the two bases 62 are opposite to each other, while the straight sections of the bases 62 face the main shaft 2.

[0035] A linear motor can be installed on the connecting plate 61 to drive the sliding of the base 62, achieving automatic adjustment using electronic control logic. Alternatively, a hand-cranked screw 66 can be installed on the connecting plate 61, threaded onto it. Adjustment is achieved by manually rotating the screw to change the position of the base 62. The former offers higher adjustment efficiency, while the latter reduces equipment costs and simplifies maintenance. The specific structure can be selected based on actual needs; here, the only requirement is that the distance between the bases 62 can be adjusted. Figure 6 The diagram shows a structure that uses a hand-cranked screw 66 to change the position of the base 62.

[0036] Multiple slide rails 63 are fixed to the ground-facing surface of the base 62. One end of each slide rail 63 on the base 62 is close to the center of the cross-section of the base 62, and the other end is close to the arc-shaped side of the base 62 along the radial direction. The included angle between adjacent slide rails 63 on the same base 62 is the same. Each slide rail 63 is slidably connected to an abutment block 64. The end face of the abutment block 64 facing the arc-shaped side of the base 62 is an arc-shaped surface, which is used to cooperate with the traction mechanism 5 to clamp the wire. All the abutment blocks 64 of the two bases 62 are fitted together with an elastic band 65, and the inner side of the elastic band 65 contacts the arc-shaped surface of the abutment block 64.

[0037] The driving method of the abutment block 64 is the same as that of the base 62. It can be controlled by electricity or adjusted manually, as long as the horizontal distance from the abutment block 64 on each slide rail 63 to the center position of the corresponding base 62 can be kept consistent.

[0038] When both bases 62 are close to the main shaft 2, the elastic band 65 is circular in shape, which can be used for winding circular windings; when there is a certain distance between the two bases 62, the elastic band 65 is oblong in shape, which can be used for winding oblong windings, and the greater the distance between the bases 62, the longer the straight segment of the oblong coil at the winding point. By synchronously changing the position of the abutment block 64 on the slide rail 63, the diameter of the circular cross-sections at both ends of the elastic band 65 can be changed.

[0039] See Figure 1 , Figure 2 The traction mechanism 5 includes a belt 51, a pulley 52, and a tensioning assembly. There are two tensioning assemblies, one of which is used to cooperate with the pulley 52, and the other is used to cooperate with the straightening roller 42.

[0040] See Figure 7The tensioning assembly includes an elastic element 53, a sliding frame 54, and a sliding block 55. The sliding frame 54 is fixed on the rotating frame 12 and extends horizontally towards the main shaft 2. The sliding block 55 is slidably connected to the sliding frame 54, and the sliding direction of the sliding block 55 is parallel to the radial direction of the main shaft 2. The two ends of the elastic element 53 are respectively connected to the sliding block 55 and the frame 1, and the tensioning wheel is rotatably connected to the sliding block 55. The angle between the sliding frame 54 in the two tensioning assemblies and the center of the rotating frame 12 is an acute angle. The rotating wheel 52 is rotatably connected to the sliding frame 54 of the mating tensioning assembly, and multiple straightening rollers 42 are also rotatably connected to the sliding frame 54 of the mating tensioning assembly. The elastic force of the elastic element 53 in the tensioning assembly mating with the straightening roller 42 is weaker than that in the tensioning assembly mating with the rotating wheel 52. In this embodiment, the elastic element 53 is a spring, and the spring is always kept in a stretched state. One end of the belt 51 is fitted onto the tensioning pulley, and the other end of the belt 51 crosses the main shaft 2 and is fitted onto the side of the elastic belt 65 away from the pulley 52.

[0041] As the rotating frame 12 rotates, the feed roller 41 and the tension roller rotate synchronously around the main shaft 2. The feed roller 41 continuously pulls the wire out of the wire feeding reel 3. As the belt 51 rotates with the tension roller, it continuously presses the wire between the belt 51 and the elastic belt 65 for shaping. After the belt 51, which is close to the shaping mold 6, separates from the contact with the elastic belt 65, the wire is released from the clamp and falls off under the action of gravity.

[0042] like Figure 8 As shown, when the long axis of the elastic belt 65 is perpendicular to the sliding frame 54, the distance between the wire inlet position and the sliding frame 54 is the longest, and the tension of the belt 51 is the greatest at this time, thus driving the sliding block 55 to move to the position closest to the main shaft 2. As the elastic belt 65 rotates, the distance between the wire inlet position and the sliding frame 54 gradually shortens, and the tension of the belt 51 should gradually decrease. The sliding block 55 moves away from the main shaft 2, so that the tension of the belt 51 is maintained. Figure 5 As shown, when the long axis of the elastic band 65 is parallel to the sliding frame 54, the distance between the wire inlet position and the sliding frame 54 is the shortest, and the sliding block 55 moves to the position furthest from the main shaft 2.

[0043] See Figure 4 The take-up mechanism 7 includes a stand 71, a lifting screw 73, a tray 74, and a coil inner mold 75. The stand 71 is fixed to the ground. The lifting screw 73 is rotatably connected to the stand 71 and is arranged parallel to the main shaft 2. A motor for driving the lifting screw 73 to rotate is fixed on the stand 71. A lifting platform 72 is threadedly connected to the lifting screw 73. The tray 74 is sleeved on the outside of the coil inner mold 75. The lifting platform 72 and the tray 74 are detachably connected. The coil inner mold 75 is detachably connected to the lower end of the main shaft 2.

[0044] The support frame 71 has a first opening for the tray 74 and the inner coil mold to pass through, and a second opening for the tray 74 and the inner coil mold to pass through. To ensure that the inner coil mold 75 and the tray 74 can pass through the openings at any time when the spindle 2 stops rotating, the cross-sectional shape of the openings is a circle with the diameter being the distance between the maximum relative angles of the trays 74. The first opening on the support frame 71 only needs to be compatible with the cross-sectional shape of the tray 74 and the inner coil mold.

[0045] At the initial stage of winding, the lifting platform 72 rises to the preset highest position. At this time, the upper surface of the tray 74 is slightly lower than the upper end face of the inner coil mold 75 to form a stepped surface, facilitating the wire to fall onto the tray 74 and gradually stack upwards while being wound around the inner coil mold 75. As the rotating frame 12 rotates, the belt 51 and elastic belt 65 continuously clamp subsequent wires. After this part of the wire is released from the clamping of the belt 51 and elastic belt 65, it falls downwards onto the tray 74. The wire has rotational inertia during the falling process, causing wires to continuously accumulate on the tray 74 in a spiral form. As the height of the wires stacked on the tray 74 increases, the lifting platform 72 descends, ensuring that the top of the stacked coil and the shaping mold 6 are always maintained at a certain distance, which is the minimum distance for the wire to fall. This setting ensures that the amount of wire deformation during falling is fixed, preventing further deformation due to axial stretching, reducing the wire falling and twisting time, and avoiding wire twisting and overlapping.

[0046] Furthermore, alternating spiral stacking winding can be achieved by changing the positions of the incoming and outgoing wires in the radial direction of the main shaft 2. Odd-numbered layers are wound from the inside out, while even-numbered layers are wound from the outside in.

[0047] Compared to traditional segmented layered windings, the maximum field strength gradient of the winding is reduced by 57%, and the uniformity of field strength distribution is improved to over 90%; the segmented commutation process is eliminated, and the winding efficiency is improved by ≥200%; the inter-segment connection welding points are eliminated, and the fault risk points are reduced to zero.

[0048] The detachable connection between the lifting platform 72 and the tray 74 is achieved by a pin locking mechanism. Specifically, the tray 74 has a first through hole extending horizontally through the tray 74, and the lifting platform 72 has a second through hole extending through the lifting platform 72 on its side wall opposite to the first through hole. The connection between the lifting platform 72 and the tray 74 is achieved by passing one end of the pin through the second through hole and then inserting it into the first through hole.

[0049] The inner coil mold 75 has an inner cavity extending through its upper and lower end faces. The cross-section of the inner cavity is square, and the bottom cross-section of the lower section of the main shaft 2 is also square. A third through hole is provided on the outer bottom wall of the lower section of the main shaft 2. A fourth through hole corresponding to the third through hole is provided on both sides of the support frame 71, and the fourth through hole extends through both the inner and outer sides of the support frame 71. To insert the lower section of the main shaft 2 into the inner cavity of the inner coil mold 75, a relatively long straight rod is used, passing through the fourth through hole on one side of the support frame 71, then through the third through hole, and finally into the fourth through hole on the other side of the support frame 71. The bottom of the inner coil mold is supported on the straight rod. Multiple sets of third and fourth through holes are provided, and there are also multiple straight rods to provide a larger support area.

[0050] A fifth through hole is provided on the side wall at the lower end of the inner coil mold 75, which corresponds to the first through hole on the tray 74. After the winding is completed, the tray 74 is lowered to the lowest position with the lifting platform 72. The connection between the tray 74 and the lifting platform 72 is released, and then the tray 74 and the inner coil mold 75 are connected with a pin. Finally, the straight rod is pulled out from the fourth and third through holes to release the connection between the stand 71 and the main shaft 2. This allows the inner coil mold 75 and the tray 74 to separate from the contact with the main shaft 2 through the first opening of the stand 71.

[0051] To facilitate the handling of the coil inner mold 75 with the coil wound on it, a transport trolley can be entered into the production space through the ground passage of the frame 1 and parked directly below the second opening of the upright 71. After the coil inner mold 75 detaches from the main shaft 2, it is loaded onto the transport trolley after passing through the opening of the upright 71, and then transported out of the production space by the transport trolley.

[0052] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0053] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this invention patent should be determined by the appended claims.

Claims

1. A vertical winding machine for dry-type transformers, characterized in that: It includes a main shaft (2) fixed relative to the ground, a wire feeding reel (3) mounted on the main shaft (2), a shaping mold (6) located below the wire feeding reel (3), a guide mechanism (4) located between the wire feeding reel (3) and the shaping mold (6), a take-up mechanism (7) located below the shaping mold (6), a frame (1) and a traction mechanism (5); The frame (1) includes a support frame (11), a rotating frame (12), and a drive mechanism. The support frame (11) is supported on the ground, the rotating frame (12) is rotatably connected to the support frame (11), and the drive mechanism is used to drive the rotation of the rotating frame (12). The wire reel (3) is used to store wires; The shaping mold (6) is fixed on the main shaft (2); The traction mechanism (5) includes a belt (51), a pulley (52) and a tensioning assembly. The pulley (52) is mounted on a rotating frame (12). One end of the belt (51) is fitted onto the pulley (52), and the other end of the belt (51) is fitted onto a shaping mold (6). The tensioning assembly is used to tension the belt (51). The guiding mechanism (4) is mounted on the rotating frame (12) and is used to guide the wire drawn from the wire feeding reel (3) between the traction mechanism (5) and the shaping mold (6) so that the traction mechanism (5) and the shaping mold (6) clamp the wire; The take-up mechanism (7) includes a coil inner mold (75), which is set to rotate synchronously with the main shaft (2).

2. The dry-type transformer vertical winding machine as described in claim 1, characterized in that: The shaping mold (6) includes a connecting plate (61) fixed on the main shaft (2). Two bases (62) are provided on the connecting plate (61). The two bases (62) are located on both sides of the main shaft (2). Multiple slide rails (63) distributed around the main shaft (2) are installed on the bases (62). One end of the slide rail (63) faces the main shaft (2), and the other end of the slide rail (63) is away from the main shaft (2). Each slide rail (63) is slidably connected with an abutment block (64). The end of the belt (51) away from the tensioning component is sleeved on the side of the multiple abutment blocks (64) away from the main shaft (2).

3. A dry-type transformer vertical winding machine as described in claim 2, characterized in that: Two bases (62) are slidably connected to the connecting plate (61), and the sliding directions of the two bases (62) are the same and parallel to the radial direction of the main shaft (2).

4. The dry-type transformer vertical winding machine as described in claim 2, characterized in that: The shaping mold (6) also includes an elastic band (65), which is sleeved on the side wall of all the abutment blocks (64) away from the main shaft (2), and the end of the belt (51) away from the tensioning component is sleeved on the side of the elastic band (65) away from the abutment block (64).

5. A dry-type transformer vertical winding machine as described in claim 1, characterized in that: The take-up mechanism (7) also includes a tray (74) and a stand (71) located below the inner coil mold (75). The tray (74) is fitted over the inner coil mold (75), and the inner coil mold (75) is detachably connected to the main shaft (2). The stand (71) has a channel for the tray (74) and the inner coil mold (75) to pass through.

6. A dry-type transformer vertical winding machine as described in claim 5, characterized in that: The take-up mechanism (7) also includes a lifting screw (73), which is rotatably connected to the stand (71) and set parallel to the main shaft (2). A lifting platform (72) is threadedly connected to the lifting screw (73). The lifting platform (72) is detachably connected to the tray (74), and the tray (74) is detachably connected to the inner coil mold (75).

7. A dry-type transformer vertical winding machine as described in claim 1, characterized in that: The guiding mechanism (4) includes multiple feed rollers (41) and multiple straightening rollers (42). The multiple straightening rollers (42) are arranged sequentially at the wire inlet of the belt (51) along the wire transmission direction, and the multiple straightening rollers (42) are arranged alternately on both sides of the belt (51). The circumferential arc surface of the straightening roller (42) is tangent to the side surface of the wire inlet of the belt (51). The multiple feed rollers (41) are spirally distributed between the wire feeding reel (3) and the straightening rollers (42), and both the feed rollers (41) and the straightening rollers (42) are arranged on the rotating frame (12).

8. A dry-type transformer vertical winding machine as described in claim 1, characterized in that: The tensioning assembly includes an elastic element (53), a sliding frame (54), and a sliding block (55). The sliding frame (54) is fixed on the rotating frame (12), and the sliding block (55) is slidably connected to the sliding frame (54). The sliding direction of the sliding block (55) is parallel to the radial direction of the main shaft (2). The two ends of the elastic element (53) are respectively connected to the sliding block (55) and the frame (1). The rotating wheel (52) is rotatably connected to the sliding block (55), and the end of the belt (51) away from the main shaft (2) is sleeved on the rotating wheel (52).

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