Amorphous alloy enclosed three-dimensional coiled distribution transformer high and low voltage coil winding integrated machine

Abstract

The present invention relates to the technical field of transformer processing, and specifically discloses a non-crystalline alloy closed three-dimensional coiling machine for high and low voltage coils of a transformer, which includes an unwinding unit, a welding unit, and a winding unit. The unwinding unit is used for unwinding foil strip materials and insulating paper; the welding unit is used for welding copper sheets onto the foils; the winding unit is used for winding the foils and the insulating paper together on the iron core after stacking. The non-crystalline alloy closed three-dimensional coiling machine for high and low voltage coils of a transformer provided by the present invention can automatically complete the winding of the three windings on a three-dimensional triangular coiled iron core transformer, and during the winding process, by suspending and supporting both ends of the iron core and providing auxiliary support for the windings, the stability of the iron core and the windings can be ensured, the winding quality can be improved, and the production technical requirements can be met.

Description

Technical Field

[0001] The present invention relates to the technical field of transformer processing, and particularly to a non-crystalline alloy closed three-dimensional winding machine for high and low voltage coils of a distribution transformer. Background Art

[0002] A transformer is a device that uses the principle of electromagnetic induction to change the AC voltage. It includes coils and an iron core, and is mainly applied to voltage transformation, current transformation, impedance transformation, etc. A three-dimensional triangular wound core transformer is a type of transformer, which has advantages such as energy saving, low noise, strong overload capacity, and compact structure, making its application more and more extensive.

[0003] As Figure 10 、 11 shown, the three-dimensional triangular wound core transformer includes a three-dimensional iron core a and three windings b. The three-dimensional iron core a is formed by splicing three wound iron core single frames with the same geometric dimensions into a triangular three-dimensional arrangement. After the foil and insulating paper are stacked, they are wound around the core columns of the iron core to form the winding b, and the three windings b are arranged in a "pin" shape.

[0004] In the production process of the three-dimensional triangular wound core transformer, it is necessary to clamp and fix the iron core, and the iron core is suspended so that coils can be wound around each core column of the iron core. However, the existing foil winding equipment cannot be applied to the production of large three-dimensional triangular wound core transformers. Due to the large size and self-weight of the large three-dimensional triangular wound core transformer, the existing equipment cannot provide good support for it, resulting in poor stability of the iron core during the winding process, low winding quality, and inability to meet the production technical requirements.

[0005] It can be seen that the existing technology still needs to be improved. Summary of the Invention

[0006] In view of the above deficiencies of the existing technology, the purpose of the present invention is to provide a non-crystalline alloy closed three-dimensional winding machine for high and low voltage coils of a distribution transformer, aiming to solve the technical problem of poor support stability of the three-dimensional triangular wound core transformer in the existing technology.

[0007] To achieve the above purpose, the present invention adopts the following technical solutions:

[0008] A non-crystalline alloy closed three-dimensional winding machine for high and low voltage coils of a distribution transformer, comprising:

[0009] A pay-off unit, provided with a first frame, a first pay-off device and a second pay-off device arranged on the first frame. The first pay-off device is used for paying off the foil coil stock, and the second pay-off device is used for paying off the insulating paper coil stock;

[0010] The welding unit is provided downstream of the first unwinding device. The welding unit includes a second frame, and a welding table, a pressing device and a first translation assembly provided on the second frame. The welding table and the pressing device cooperate to press the foil and the copper sheet. A welding gun is provided at the output end of the first translation assembly, and the welding gun is used to weld and fix the foil and the copper sheet.

[0011] The winding unit is provided downstream of the welding unit. The winding unit includes a third frame, and a driving and rotating device, a second translation assembly and an auxiliary supporting device provided on the third frame. A positioning device is provided at the output end of the second translation assembly, and the positioning device is used to fix the position of the iron core. The auxiliary supporting device is used to assist in supporting the iron core. The driving and rotating device includes a first rotating assembly, a rotating shaft provided at the output end of the first rotating assembly, and two driving gear discs symmetrically provided on the rotating shaft. The two driving gear discs are slidably connected to the rotating shaft, and the first rotating assembly can drive the two driving gear discs to rotate through the rotating shaft.

[0012] During winding, the foil and the insulating paper are stacked. Two detachable passive gear discs are provided on the iron core, and the passive gear discs are rotatably connected to the core columns of the iron core. The two driving gear discs are meshed with the two passive gear discs one by one to drive the stacked foil and insulating paper to be wound around the iron core.

[0013] Further, the winding unit further includes a third translation assembly. Two third sliding seats moving towards or away from each other are provided on the third translation assembly, and one driving gear disc is provided on one third sliding seat. A cantilever is provided on the third sliding seat, and a supporting gear is rotatably connected to the cantilever. The supporting gear is meshed with the passive gear disc.

[0014] Further, a first positioning plane extending in the axial direction of the rotating shaft is provided on the peripheral wall of the rotating shaft. Two sliding sleeves are slidably connected to the rotating shaft. The first positioning plane is used to limit the sliding sleeves to move only along the axial direction of the rotating shaft. One sliding sleeve is rotatably connected to one third sliding seat through a bearing, and the driving gear disc is fixed on the sliding sleeve.

[0015] Further, the auxiliary supporting device includes a first lifting assembly, a support, and a pressure sensor for connecting the first lifting assembly and the support. A supporting wheel is rotatably connected to the support.

[0016] Further, the positioning device includes a fourth translation assembly and two claw discs. Two fourth sliding seats moving towards or away from each other are provided on the fourth translation assembly, and one claw disc is rotatably provided on one fourth sliding seat. One or more clamping claws are provided on each claw disc, and a V-shaped groove adapted to the iron core is provided on the clamping claw.

[0017] Further, a rubber pad is provided on the surface of the V-shaped groove. Positioning grooves extending to the ends are respectively opened on both side walls of the V-shaped groove, and the width of the positioning groove gradually decreases in the direction away from the end. A staple is provided on the rubber pad, and the staple is clamped in the positioning groove.

[0018] Further, the welding unit further includes a first sliding seat disposed at the output end of the first translation assembly, an XZ-axis position adjusting assembly disposed on the first sliding seat, an X-axis fine-tuning assembly disposed on the XZ-axis position adjusting assembly, a Z-axis fine-tuning assembly disposed on the X-axis fine-tuning assembly, and a clamping seat disposed on the Z-axis fine-tuning assembly, and the welding torch is fixedly inclined on the clamping seat.

[0019] Further, the pressing device includes a pressing plate and a downward pressing air cylinder. One side of the pressing plate is hinged to the second frame, and the extending rod of the downward pressing air cylinder acts on the pressing plate to swing the pressing plate downward. A return spring for driving the pressing plate to swing and reset is disposed between the pressing plate and the second frame.

[0020] Further, the unwinding unit further includes a first guide roller, a support platform, two second guide rollers, and a dust removal device sequentially arranged along the conveying direction of the foil. The dust removal device includes a fixing plate disposed on the first frame, a second lifting assembly disposed on the fixing plate, and a movable plate disposed on the second lifting assembly. Sponges are disposed on the corresponding surfaces of the fixing plate and the movable plate.

[0021] Further, the unwinding unit further includes a limiting device disposed downstream of the dust removal device. The limiting device includes a vertical plate horizontally slidably connected to the first frame. The vertical plate is of a C-shaped structure, and two position-adjustable limiting rollers are disposed on the vertical plate, and the foil is located between the two limiting rollers.

[0022] Beneficial effects:

[0023] The present invention provides a non-crystalline alloy closed three-dimensional winding machine for high and low voltage coils of a distribution transformer, which is used for the production and processing of a three-dimensional triangular wound core transformer. Before processing, the two ends of the iron core are clamped and fixed by a positioning device to make the iron core suspended. The first unwinding device unwinds the foil coil material. When the foil passes through the welding unit, the copper sheet is welded and fixed on the foil by the welding unit to form the electrode end of the three-dimensional triangular wound core transformer. The second unwinding device unwinds the insulating paper coil material, and after the foil and the insulating paper are stacked, they are wound by the winding unit. During winding, the first rotating assembly drives the rotating shaft to rotate, and drives the driving gear disk to engage with the passive gear disk to realize winding the foil and the insulating paper onto the core column to form the first winding. During the winding process, the auxiliary support device plays an auxiliary supporting role for the winding to ensure the stability of the iron core and the winding, thereby improving the winding quality. After completing one winding, the second rotating assembly drives the iron core to rotate by an angle, and another core shaft rotates to the winding position to wind the second winding. By this principle, until the winding of the three windings is completed, through the automatic winding of the three windings, the problem of poor winding quality caused by multiple clamping of the iron core is avoided, and the production technical requirements can be met. Description of the Drawings

[0024] Figure 1Top view of the integrated machine for winding high- and low-voltage coils of amorphous alloy closed-type three-dimensional coiled distribution transformer provided by the present invention;

[0025] Figure 2 Schematic structural diagram of the winding process;

[0026] Figure 3 Front view of the welding unit in the integrated machine for winding high- and low-voltage coils of amorphous alloy closed-type three-dimensional coiled distribution transformer provided by the present invention;

[0027] Figure 4 Top view of the take-up unit in the integrated machine for winding high- and low-voltage coils of amorphous alloy closed-type three-dimensional coiled distribution transformer provided by the present invention;

[0028] Figure 5 Top view of the driving gear disc in the integrated machine for winding high- and low-voltage coils of amorphous alloy closed-type three-dimensional coiled distribution transformer provided by the present invention;

[0029] Figure 6 Top view of the claw disc in the integrated machine for winding high- and low-voltage coils of amorphous alloy closed-type three-dimensional coiled distribution transformer provided by the present invention;

[0030] Figure 7 Partial cross-sectional view of the jaw in the integrated machine for winding high- and low-voltage coils of amorphous alloy closed-type three-dimensional coiled distribution transformer provided by the present invention;

[0031] Figure 8 Side view of the dust removal device in the integrated machine for winding high- and low-voltage coils of amorphous alloy closed-type three-dimensional coiled distribution transformer provided by the present invention;

[0032] Figure 9 Side view of the limiting device in the integrated machine for winding high- and low-voltage coils of amorphous alloy closed-type three-dimensional coiled distribution transformer provided by the present invention;

[0033] Figure 10 Schematic structural diagram of a three-dimensional triangular coiled core transformer;

[0034] Figure 11 Schematic structural diagram of the iron core, winding and passive gear disc.

[0035] Reference numerals: unwinding unit 1, first frame 11, first unwinding device 12, second unwinding device 13, first guide roller 14, support platform 15, second guide roller 16, dust removal device 17, fixing plate 171, second lifting assembly 172, movable plate 173, sponge 174, limiting device 18, vertical plate 181, limiting roller 182, welding unit 2, second frame 21, welding table 22, pressing device 23, pressing plate 231, downward pressing cylinder 232, return spring 233, first translation assembly 24, first sliding seat 241, welding torch 25, XZ-axis position adjustment assembly 26, cross bar 261, vertical bar 262, X-axis fine adjustment assembly 27, Z-axis fine adjustment assembly 28, clamping seat 29, winding unit 3, third frame 4, third translation assembly 41, third sliding seat 42, cantilever 43, adjustment groove 431, support gear 44, square shaft 45, driving and rotating device 5, first rotating assembly 51, rotating shaft 52, first positioning plane 521, sliding sleeve 522, driving gear disc 53, protective cover 54, second translation assembly 6, auxiliary support device 7, first lifting assembly 71, support 72, pressure sensor 73, support wheel 74, positioning device 8, fourth translation assembly 81, claw disc 82, fourth sliding seat 83, clamping jaw 84, V-shaped groove 841, positioning groove 842, rack 843, rubber pad 85, staple 851, adjustment gear disc 86, handle 861, second rotating assembly 87, passive gear disc 9;

[0036] Iron core a, winding b, foil c, insulating paper d, copper sheet e. Detailed implementation manners

[0037] The present invention provides a non-crystalline alloy closed three-dimensional winding machine for high and low voltage coils of a distribution transformer. To make the objectives, technical solutions and effects of the present invention clearer and more definite, the following further describes the present invention in detail with reference to the accompanying drawings and by way of examples. It should be understood that the specific examples described herein are only used to explain the present invention and are not used to limit the present invention.

[0038] In the description of the present invention, it should be understood that the terms "upper", "lower", "left", "right", etc. indicating the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, specific orientation structure and operation. Therefore, it cannot be understood as a limitation to the present invention. In addition, "first" and "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0039] In the present invention, the X-axis direction is the conveying direction of the foil, the Y-axis direction is the width direction of the foil, and the Z-axis direction is the vertical direction.

[0040] Please refer to Figures 1 to 9 As shown, the present invention provides a non-crystalline alloy closed three-dimensional winding machine for high and low voltage coils of distribution transformers, including: a unwinding unit 1, a welding unit 2, and a winding unit 3. The present invention is used for the production and processing of three-dimensional triangular core transformers. The foil c and the insulating paper d are wound and stacked on the three core columns of the iron core in sequence to respectively form three windings c; and during the winding process, a copper sheet e needs to be welded on the foil to form the electrode end of the winding c.

[0041] Please refer to Figure 1 、 3 As shown in FIGS. 1, 2, 3, and 4, the unwinding unit 1 is provided with a first frame 11, a first unwinding device 12 and a second unwinding device 13 provided on the first frame 11. The first unwinding device 12 is used for unwinding the foil coil material, and the second unwinding device 13 is used for unwinding the insulating paper coil material; the welding unit 2 is arranged downstream of the first unwinding device 12. The welding unit 2 includes a second frame 21, a welding table 22, a pressing device 23 and a first translation assembly 24 provided on the second frame 21. The welding table 22 and the pressing device 23 cooperate to press the foil and the copper sheet. The output end of the first translation assembly 24 is provided with a welding torch 25, and the welding torch 25 is used to weld and fix the foil and the copper sheet; the winding unit 3 is arranged downstream of the welding unit 2. The winding unit 3 includes a third frame 4, a driving rotation device 5, a second translation assembly 6 and an auxiliary support device 7 provided on the third frame 4. The output end of the second translation assembly 6 is provided with a positioning device 8, and the positioning device 8 is used to fix the position of the iron core. The auxiliary support device 7 is used to assist in supporting the iron core; the driving rotation device 5 includes a first rotation assembly 51, a rotating shaft 52 provided at the output end of the first rotation assembly 51, and two driving gear discs 53 symmetrically arranged on the rotating shaft 52. The two driving gear discs 53 are slidably connected to the rotating shaft 52, and the first rotation assembly 51 can drive the two driving gear discs 53 to rotate through the rotating shaft 52;

[0042] When winding the windings, the foil and the insulating paper are stacked. There are two detachable passive gear discs 9 provided on the iron core, and the passive gear discs 9 are rotatably connected to the core columns of the iron core. The two driving gear discs 53 are in one-to-one correspondence and engagement with the two passive gear discs 9 to realize driving the stacked foil and insulating paper to be wound around the iron core.

[0043] When manufacturing a three-dimensional triangular wound core transformer, the positioning device 8 supports and fixes both ends of the core to make the core suspended, and a passive gear disc 9 is sleeved on one of the core columns of the core. The second translation assembly 6 drives the positioning device 8 to move towards the driving and rotating device 5 so that the driving gear disc 53 meshes with the passive gear disc 9. During production, the first unwinding device 12 unwinds the foil coil, and the second unwinding device 13 unwinds the insulating paper. The foil enters the winding unit 3 after passing through the welding unit 2, while the insulating paper directly enters the winding unit 3. When it is necessary to weld a copper sheet to the foil, the first unwinding device 12 and the second unwinding device 13 stop unwinding, and the copper sheet is placed on the surface of the foil. The pressing device 23 cooperates with the welding table 22 to press and fix the foil and the copper sheet. The first translation assembly 24 drives the welding torch 25 to move horizontally so that the welding torch 25 welds the foil and the copper sheet together. During winding, the foil and the insulating paper are stacked. The first rotating assembly 51 drives the rotating shaft 52 to rotate and drives the two driving gear discs 53 to rotate synchronously. The driving gear disc 53 meshes with the passive gear disc 9 to realize winding on this core column and complete the winding of one core column. In the later stage of winding, due to the increasing weight of the winding, the auxiliary support device 7 can play an auxiliary supporting role for the winding to ensure the stability of the core installation.

[0044] After completing the winding of one winding, the passive gear disc 9 is installed on another core column, and the positioning device 8 drives the core to rotate by an angle so that this core column rotates to the winding station and the second winding is wound. By this principle, the winding of three windings is completed until. Compared with the prior art, by clamping and fixing both ends of the core; and in the later stage of winding, the auxiliary support device 7 is used to support the winding to improve the stability of the core and winding installation, ensure the winding quality, and meet the production technical requirements.

[0045] In the above, the first unwinding device 12 includes a power source and an expandable clamp. The expandable clamp can adopt a non-spoke rim self-centering expandable clamp disclosed in Chinese Patent Publication No. CN219747675U, which can facilitate the staff to install or remove the foil coil. The second unwinding device 13 includes a power source and an air shaft, and the air shaft can facilitate the staff to quickly install and disassemble the insulating paper coil. To shorten the time spent during coil change, more than one first unwinding device 12 and second unwinding device 13 can be provided. Through the above settings, the production efficiency of the three-dimensional triangular wound core transformer can be improved.

[0046] In a preferred embodiment, please refer to Figure 2 、 4, 5, the winding unit 3 further includes a third translation component 41. Two third sliders 42 moving towards or away from each other are provided on the third translation component 41. A driving gear disc 53 is provided on one of the third sliders 42. A cantilever 43 is provided on the third slider 42. A support gear 44 is rotatably connected to the cantilever 43, and the support gear 44 meshes with the driven gear disc 9. During the winding process, the support gear 44 is located below the driven gear disc 9. On the one hand, it plays an auxiliary supporting role for the driven gear disc 9 and the iron core. On the other hand, the driven gear disc 9 meshes with the support gear 44 to improve the rotation stability and smoothness of the driven gear disc 9, thereby improving the winding quality of the foil and the insulating paper.

[0047] In actual use, iron cores of different sizes are equipped with different driven gear discs 9. Therefore, it is necessary to match different support gears 44 and adjust the installation position of the support gear 44 to ensure the meshing of the driven gear disc 9 and the support gear 44. Specifically, an adjustment groove 431 extending along the length direction of the cantilever 43 is formed on the cantilever 43. A square shaft 45 is slidably connected to the adjustment groove 431. One end of the square shaft 45 is rotatably connected to the support gear 44, and a nut is screwed to the other end of the square shaft 45. The nut cooperates with the shoulder of the square shaft 45 to lock the square shaft 45 at any position of the adjustment groove 431. When the support gear 44 needs to be replaced, the nut is unscrewed, and the square shaft 45 can be directly pulled out of the adjustment groove 431. After replacing the new support gear 44, the corresponding square shaft 45 is inserted into the adjustment groove 431, and the square shaft 45 slides along the adjustment groove 431 to adjust the support gear 44 to a suitable position. Finally, the nut is tightened to fix the installation position of the support gear 44. Through the above settings, it is possible to facilitate the adjustment and replacement of the support gear 44, which is suitable for winding different-sized iron cores, and has a wide range of applicability.

[0048] It should be noted that a detachable sleeve is provided on the core column, and the driven gear disc 9 is fixedly arranged on the sleeve. The installation position of the sleeve is relatively fixed with respect to the core column and has a self-rotation function, so that the driven gear disc 9 rotates under the meshing action of the driving gear disc 53, and the foil and the insulating paper can be wound onto the core column. After the winding is completed, the sleeve and the driven gear disc 9 are removed. At this time, there is a certain gap between the winding and the core column, and the position of the winding is fixed uniformly in the subsequent production process.

[0049] In a preferred embodiment, please refer to Figure 2 , 4, a first positioning plane 521 extending along the axial direction is provided on the peripheral wall of the rotating shaft 52. Two sliding sleeves 522 are slidably connected to the rotating shaft 52. The first positioning plane 521 is used to limit the sliding sleeve 522 to move only along the axial direction of the rotating shaft 52. Correspondingly, a second positioning plane that fits the first positioning plane 521 is provided on the sliding sleeve 522, so that the sliding sleeve 522 can only move horizontally on the rotating shaft 52, and the rotating shaft 52 can drive the sliding sleeve 522 to rotate. One sliding sleeve 522 is rotatably connected to a third sliding seat 42 through a bearing, and the driving gear disk 53 is fixedly arranged on the sliding sleeve 522. During adjustment, the third translation assembly 41 drives the two third sliding seats 42 to move towards or away from each other, and the two sliding sleeves 522 move horizontally along the rotating shaft 52, so that the two driving gear disks 53 correspond to the two driven gear disks 9 one by one. During winding, the first rotating assembly 51 drives the rotating shaft 52 to rotate, so as to drive the two sliding sleeves 522 to rotate, and thus drive the driving gear disk 53 to rotate.

[0050] Further, refer to Figure 5 , a protective cover 54 is provided on the third sliding seat 42. The protective cover 54 is located on the outer periphery of the driving gear disk 53. By providing the protective cover 54, it is possible to prevent the foil and the insulating paper from touching the driving gear disk 53 due to misoperation. At the same time, it is possible to prevent the lubricant on the driving gear disk 53 from splashing onto the foil and the insulating paper, thereby achieving the purpose of protecting the foil and the insulating paper.

[0051] In a preferred embodiment, please refer to Figure 2 , 4 , the auxiliary support device 7 includes a first lifting assembly 71, a support 72, and a pressure sensor 73 for connecting the first lifting assembly 71 and the support 72. A support wheel 74 is rotatably connected to the support 72. By providing the support wheel 74, the friction between the winding and the support 72 can be reduced. During use, the first lifting assembly 71 drives the support 72 to move upward to lift the support wheel 74. When the winding is wound to a certain extent, its outer surface acts on the support wheel 74 and drives the support wheel 74 to rotate. At this time, the support wheel 74 plays an auxiliary support role for the winding. As the outer diameter of the winding becomes larger and larger, the force exerted by the winding on the support wheel 74 also gradually increases. The pressure sensor 73 can detect the pressure received by the support 72. Once this pressure exceeds the pressure preset value, the first lifting assembly 71 drives the support 72 to descend a small distance, and the support wheel 74 moves away from the winding, so that the detected value of the pressure sensor 73 is within the pressure preset range, and the winding can be better supported.

[0052] It should be understood that the support wheel 74 is located below the winding and can provide an upward support force for the winding. Preferably, the installation position of the first lifting assembly 71 is adjustable to increase the installation range of the support wheel 74 and adapt to the winding work of iron cores of different sizes.

[0053] In a preferred embodiment, please refer to Figure 4 , 6 , 7, the positioning device 8 includes a fourth translation assembly 81 and two jaw chucks 82. Two fourth sliding seats 83 moving towards or away from each other are provided on the fourth translation assembly 81, and one jaw chuck 82 is rotatably provided on one fourth sliding seat 83; more than one clamping jaw 84 is provided on each jaw chuck 82, and the clamping jaw 84 is provided with a V-shaped groove 841 adapted to the iron core. Correspondingly, there are three clamping jaws 84, and the three clamping jaws 84 are arranged in a circumferential array on the jaw chuck 82. The three clamping jaws 84 respectively correspond to three sides at one end of the iron core. The fourth translation assembly 81 drives the two jaw chucks 82 to move towards each other, and the two ends of the iron core are stuck on multiple V-shaped grooves 841 to fix the position of the iron core. By fixing the two ends of the iron core, the iron core can be well supported to ensure the smooth progress of the entire winding process.

[0054] The installation structure of the three clamping jaws 84 of the present application can adopt the structure in the prior art. For example, the three-jaw adjustable socket sleeve with the Chinese patent publication number CN102658533A. The installation structure of the clamping jaws 84 of the present application is similar to the above-provided prior art, and the specific structure is as follows:

[0055] Refer to Figure 6 , the three clamping jaws 84 can make translational movement along the radial direction of the jaw chuck 82 to adjust the position of the clamping jaws 84 to be applicable to fixing iron cores of different sizes. A rack 843 is fixedly provided on the side of the clamping jaw 84 away from the V-shaped groove 841. The rack 843 is slidably connected to the jaw chuck 82. An adjusting gear disk 86 is rotatably connected inside the jaw chuck 82. One side of the adjusting gear disk 86 is provided with a flat thread, and the flat thread meshes with the racks 843 of the three clamping jaws 84. A vertically arranged handle 861 is provided on the adjusting gear disk 86. During adjustment, by rotating the handle 861 to drive the adjusting gear disk 86 to rotate around the center line of the jaw chuck 82, the flat thread meshes with the three racks 843, and the jaw chuck 82 is provided with radially arranged guide grooves corresponding to the three clamping jaws 84 to realize the synchronous movement of the three clamping jaws 84 along the radial direction of the jaw chuck 82.

[0056] Furthermore, refer to Figure 6 , a second rotating assembly 87 is provided on each fourth sliding seat 83. One second rotating assembly 87 drives one jaw chuck 82 to rotate correspondingly, and the two jaw chucks 82 rotate synchronously. After the winding of one core column is completed, the two second rotating assemblies 87 drive the two jaw chucks 82 to rotate, and the iron core rotates by an angle, so that the other core column rotates to the winding station, improving the automation degree of processing the three-dimensional triangular wound core transformer and avoiding reducing the winding quality due to multiple clamping of the iron core.

[0057] In the above, the first rotating assembly 51 and the second rotating assembly 87 can adopt a servo motor and a reducer in cooperation to achieve driving rotation, and can accurately control their rotational speed, steering and rotation angle.

[0058] In the above, the first translation assembly 24 and the second translation assembly 6 can adopt a ball screw transmission mechanism to drive the welding torch 25 to perform a translation movement along the width direction of the foil, and to drive the positioning device 8 to move closer to or away from the driving rotation device 5.

[0059] In the above, the third translation assembly 41 and the fourth translation assembly 81 can adopt a ball screw transmission mechanism, and its screw rod has two threads with opposite helix directions to drive the two driving gear discs 53 and the two claw discs 82 to move towards or away from each other.

[0060] Furthermore, referring to Figure 6 、 7 a rubber pad 85 is provided on the surface of the V-shaped groove 841. By providing the rubber pad 85, it plays a buffering role for the iron core to avoid rigid collision between the iron core and the clamping jaw 84 and damage the surface of the iron core.

[0061] Specifically, positioning grooves 842 extending to its ends are respectively formed on both side walls of the V-shaped groove 841, and the width of the positioning groove 842 gradually decreases in the direction away from the end. The rubber pad 85 is provided with a stud 851, and the stud 851 is clamped in the positioning groove 842. The stud 851 includes a short column and a nail head. The two ends of the short column are respectively fixed to the outside of the rubber pad 85 and the nail head. During installation, the short column is correspondingly slid into the positioning groove 842, and the short column is clamped by the positioning groove 842 with a gradually decreasing width to lock the position of the rubber pad 85. During the process of clamping the iron core, the iron core applies an external force to further push the rubber pad 85 into the V-shaped groove 841. At this time, the stud 851 slides into a position where the width of the positioning groove 842 is narrower to increase the installation stability of the rubber pad 85 and prevent the rubber pad 85 from falling off. When replacing the rubber pad 85, just pull out the rubber pad 85 slightly outward along the positioning groove 842, or cut off the nail head and directly pull out the short column from the positioning groove 842, and the operation is simple.

[0062] In a preferred embodiment, please refer to Figure 3, the welding unit 2 further includes a first sliding seat 241 provided at the output end of the first translation assembly 24, an XZ-axis position adjustment assembly 26 provided on the first sliding seat 241, an X-axis fine adjustment assembly 27 provided on the XZ-axis position adjustment assembly 26, a Z-axis fine adjustment assembly 28 provided on the X-axis fine adjustment assembly 27, and a clamping seat 29 provided on the Z-axis fine adjustment assembly 28. The welding torch 25 is inclined and fixed on the clamping seat 29. The XZ-axis position adjustment assembly 26 can roughly adjust the installation position of the welding torch 25 in the XZ-axis plane, and the X-axis fine adjustment assembly 27 and the Z-axis fine adjustment assembly 28 can finely adjust the installation position of the welding torch 25 in the XZ-axis plane. The cooperation of rough adjustment and fine adjustment can quickly adjust the welding torch 25 to the specified position.

[0063] In the above, the XZ-axis position adjustment assembly 26 includes a cross bar 261 provided on the first sliding seat 241, a vertical bar 262 provided on the cross bar 261, and a connecting member for connecting the cross bar 261 and the vertical bar 262. The connecting member can be a screw and nut. Long slots are respectively opened on the cross bar 261 and the vertical bar 262. After the screw passes through the long slot and is locked by the nut, the positions of the cross bar 261 and the vertical bar 262 can be fixed.

[0064] In the above, the X-axis fine adjustment assembly 27 includes a fixed seat, a movable block slidably connected to the fixed seat, and a screw rod rotatably connected to the fixed seat. The screw rod meshes with the movable block, and the movable block is driven to move horizontally by rotating the screw rod. The structure and working principle of the Z-axis fine adjustment assembly 28 are similar to those of the X-axis fine adjustment assembly 27, and reference can be made to the above X-axis fine adjustment assembly 27 specifically.

[0065] Further, referring to Figure 3 , the pressing device 23 includes a pressing plate 231 and a downward pressing air cylinder 232. One side of the pressing plate 231 is hinged to the second frame 21, and the extending rod of the downward pressing air cylinder 232 acts on the pressing plate 231 to make the pressing plate 231 swing downward. A return spring 233 for driving the pressing plate 231 to swing back is provided between the pressing plate 231 and the second frame 21. Among them, the return spring 233 can be a torsion spring, a tension spring, etc. During welding, the extending rod of the downward pressing air cylinder 232 extends, driving the pressing plate 231 to swing downward. The end of the pressing plate 231 presses the copper sheet and the foil against the welding table 22. Then, the first translation assembly 24 drives the first sliding seat 241 to move horizontally, so that the welding torch 25 welds and fixes the foil and the copper sheet.

[0066] In a preferred embodiment, referring to Figure 2 、 8, the unwinding unit 1 further includes a first guide roller 14, a support platform 15, two second guide rollers 16, and a dust removal device 17 arranged in sequence along the conveying direction of the foil. The dust removal device 17 includes a fixing plate 171 provided on the first frame 11, a second lifting assembly 172 provided on the fixing plate 171, and a movable plate 173 provided on the second lifting assembly 172. Sponges 174 are provided on the corresponding surfaces of the fixing plate 171 and the movable plate 173. The two second guide rollers 16 are arranged vertically to define the up and down movement range of the foil; the support platform 15 is used to support the foil to make the foil in a relatively flat state, so as to facilitate the foil to enter the dust removal device 17 for dust removal. During use, the second lifting assembly 172 drives the movable plate 173 to move upward, and the movable plate 173 approaches the fixing plate 171. When the foil passes through, the two sponges 174 are respectively in contact with the upper and lower surfaces of the foil to wipe away the dust on the surface of the foil, thereby playing a role in dust removal. To facilitate the replacement of the sponge 174, the sponge 174 is fixed to the movable plate 173 and the fixing plate 171 by screws.

[0067] In the above, the first lifting assembly 71 and the second lifting assembly 172 can be cylinder-driven lifting structures to realize driving the supporting wheel 74 to move up and down, and driving the movable plate 173 to move up and down.

[0068] Further, referring to Figure 2 , 9 , the unwinding unit 1 further includes a limiting device 18 provided downstream of the dust removal device 17. The limiting device 18 includes a vertical plate 181 horizontally slidably connected to the first frame 11. The vertical plate 181 is of a C-shaped structure, and two position-adjustable limiting rollers 182 are provided on the vertical plate 181. The foil is located between the two limiting rollers 182; the limiting rollers 182 can rotate self-actively to ensure the smooth conveying of the foil. Horizontal grooves are respectively opened on the upper and lower sides of the vertical plate 181. The two limiting rollers 182 are arranged vertically, and their two ends are respectively slidably connected to the two horizontal grooves to realize the position adjustment of the limiting rollers 182. The two limiting rollers 182 are used to limit the left and right positions of the foil to prevent the foil from shifting in position during the unwinding process, thereby ensuring the precision of the core winding.

[0069] In addition, a guide rail is provided on the vertical plate 181, and a slider is provided on the first frame 11. The slider is slidably connected to the guide rail. When the vertical plate 181 is pushed to the right, the two limiting rollers 182 limit the left and right positions of the foil; when the vertical plate 181 is pushed to the left, the vertical plate 181 is far away from the dust removal device 17 to facilitate the replacement of the sponge 174.

[0070] In summary, in the present invention, the first unwinding device 12 unwinds the foil coil stock. The foil sequentially bypasses the first guide roller 14, the support platform 15, the dust removal device 17, and the limiting device 18. After the dust on its surface is removed by the dust removal device 17, it smoothly enters the welding unit 2. When a copper sheet needs to be welded to the foil, the pressing device 23 presses the copper sheet and the foil onto the welding table 22, and the first translation assembly 24 drives the welding torch 25 to move horizontally, realizing the welding and fixing of the copper sheet on the foil. The second unwinding device 13 unwinds the insulating paper coil stock. After the foil and the insulating paper are stacked, they are wound by the winding unit 3. During winding, the positioning device 8 supports both ends of the iron core so that the iron core is placed suspended. At the same time, the driving gear disk 53 meshes with the passive gear disk 9, the passive gear disk 9 meshes with the support gear 44, and the first rotating assembly 51 drives the rotating shaft 52 to rotate, driving the driving gear disk 53, the passive gear disk 9, and the support gear 44 to rotate, realizing the winding of the foil and the insulating paper onto the core column of the iron core. The first lifting assembly 71 drives the support 72 to move upward. After the winding is wound to a certain extent, the outer side of the winding acts on the support wheel 74, and the support wheel 74 plays a certain auxiliary supporting role for the winding. At the same time, the pressure sensor 73 detects the pressure received by the support wheel 74. According to the detected value, the first lifting assembly 71 drives the support 72 to move downward so that the detected value is within the preset pressure range, ensuring a better auxiliary supporting effect on the winding. After the winding of one winding is completed, the second rotating assembly 87 drives the claw disk 82 to rotate by an angle, and the other unwound core column rotates to the winding station, and the second winding is wound. According to this principle, the winding of three windings is completed until the winding of three windings is completed.

[0071] Compared with the prior art, by supporting and fixing both ends of the iron core, using the engagement of the support gear 44 and the passive gear disk 9 to assist in supporting the iron core, and using the support wheel 74 to assist in supporting the winding, the stability of the iron core and the winding during the winding process can be improved, the winding quality can be improved, and the second rotating assembly 87 can be used to drive the iron core to rotate to realize the automatic winding of three windings, avoiding the problem of poor winding quality caused by multiple clamping of the iron core, and meeting the production technical requirements.

[0072] It can be understood that for those of ordinary skill in the art, equivalent substitutions or changes can be made according to the technical solution and inventive concept of the present invention, and all such changes or substitutions should fall within the protection scope of the appended claims of the present invention.

Claims

1. Amorphous alloy closed three-dimensional winding variable high and low voltage coil winding machine, characterized in that: include: An unwinding unit (1) is provided with a first frame (11), and a first unwinding device (12) and a second unwinding device (13) arranged on the first frame (11), the first unwinding device (12) being used for unwinding a foil coil, and the second unwinding device (13) being used for unwinding an insulating paper coil; A welding unit (2) is arranged downstream of the first unwinding device (12), the welding unit (2) comprising a second frame (21), a welding table (22), a pressing device (23) and a first translation assembly (24) arranged on the second frame (21), the welding table (22) and the pressing device (23) cooperate to press the foil and the copper sheet, and a welding gun (25) is arranged at the output end of the first translation assembly (24), and the welding gun (25) is used to weld and fix the foil and the copper sheet; The winding unit (3) is arranged downstream of the welding unit (2), and comprises a third frame (4), a driving rotating device (5) arranged on the third frame (4), a second translation assembly (6) and an auxiliary supporting device (7), wherein the output end of the second translation assembly (6) is provided with a positioning device (8), the positioning device (8) is used to fix the position of the iron core, and the auxiliary supporting device (7) is used to auxiliary support the iron core; the driving rotating device (5) comprises a first rotating assembly (51), a rotating shaft (52) arranged at the output end of the first rotating assembly (51), and two driving toothed discs (53) symmetrically arranged on the rotating shaft (52), the two driving toothed discs (53) are slidably connected to the rotating shaft (52), and the first rotating assembly (51) can drive the two driving toothed discs (53) to rotate through the rotating shaft (52); During winding, the foil and the insulating paper are stacked, two detachable passive toothed discs (9) are provided on the iron core, and the passive toothed discs (9) are rotatably connected to the core column of the iron core, and the two driving toothed discs (53) are meshed with the two passive toothed discs (9) in a one-to-one correspondence, so as to drive the stacked foil and the insulating paper to be wound on the iron core.

2. The amorphous alloy closed three-dimensional winding variable high and low voltage coil winding integrated machine according to claim 1 is characterized in that: The winding unit (3) further comprises a third translation assembly (41), the third translation assembly (41) being provided with two third slides (42) which move towards or away from each other, and a driving toothed disc (53) being provided on one of the third slides (42); a cantilever (43) being provided on the third slide (42), a support gear (44) being rotatably connected to the cantilever (43), and the support gear (44) being meshed with the driven toothed disc (9).

3. The amorphous alloy closed three-dimensional winding variable high and low voltage coil winding integrated machine according to claim 2 is characterized in that: A first positioning plane (521) extending in the axial direction of the rotating shaft (52) is provided on the peripheral wall of the rotating shaft (52); two sliding sleeves (522) are slidably connected to the rotating shaft (52); the first positioning plane (521) is used to limit the sliding sleeves (522) to move only in the axial direction of the rotating shaft (52); one sliding sleeve (522) is rotatably connected to a third sliding seat (42) via a bearing; and the driving gear disc (53) is fixedly arranged on the sliding sleeve (522).

4. The amorphous alloy closed three-dimensional winding variable high and low voltage coil winding integrated machine according to claim 1 is characterized in that: The auxiliary support device (7) comprises a first lifting assembly (71), a support (72), and a pressure sensor (73) for connecting the first lifting assembly (71) and the support (72); a support wheel (74) is rotatably connected to the support (72).

5. The amorphous alloy closed three-dimensional winding variable high and low voltage coil winding integrated machine according to claim 1, characterized in that: The positioning device (8) comprises a fourth translation assembly (81) and two claw plates (82); the fourth translation assembly (81) is provided with two fourth slide seats (83) that move towards or away from each other; a claw plate (82) is rotatably arranged on a fourth slide seat (83); each claw plate (82) is provided with one or more clamping claws (84); the clamping claws (84) are provided with V-shaped grooves (841) that are adapted to the iron core.

6. The amorphous alloy closed three-dimensional winding variable high and low voltage coil winding integrated machine according to claim 5, characterized in that: A rubber pad (85) is provided on the surface of the V-shaped groove (841), and positioning grooves (842) extending to the ends of the V-shaped groove (841) are respectively formed on two side walls of the V-shaped groove (841), and the width of the positioning groove (842) gradually decreases in a direction away from the ends, and a clamping pin (851) is provided on the rubber pad (85), and the clamping pin (851) is clamped in the positioning groove (842).

7. The amorphous alloy closed three-dimensional winding variable high and low voltage coil winding integrated machine according to claim 1, characterized in that: The welding unit (2) further comprises a first slide (241) arranged at the output end of the first translation assembly (24), an XZ-axis position adjustment assembly (26) arranged on the first slide (241), an X-axis fine-tuning assembly (27) arranged on the XZ-axis position adjustment assembly (26), a Z-axis fine-tuning assembly (28) arranged on the X-axis fine-tuning assembly (27), and a clamping seat (29) arranged on the Z-axis fine-tuning assembly (28), and the welding gun (25) is tiltedly fixed on the clamping seat (29).

8. The amorphous alloy closed three-dimensional winding variable high and low voltage coil winding integrated machine according to claim 1, characterized in that: The pressing device (23) comprises a pressing plate (231) and a pressing cylinder (232). One side of the pressing plate (231) is hinged to the second frame (21). The extending rod of the pressing cylinder (232) acts on the pressing plate (231) to cause the pressing plate (231) to swing downward. A return spring (233) is provided between the pressing plate (231) and the second frame (21) to drive the pressing plate (231) to swing and return.

9. The amorphous alloy closed three-dimensional winding variable high and low voltage coil winding integrated machine according to claim 1, characterized in that: The unwinding unit (1) further comprises a first guide roller (14), a support platform (15), two second guide rollers (16) and a dust removal device (17) which are sequentially arranged along the conveying direction of the foil, the dust removal device (17) comprising a fixed plate (171) arranged on the first frame (11), a second lifting assembly (172) arranged on the fixed plate (171), and a movable plate (173) arranged on the second lifting assembly (172), and sponges (174) are provided on corresponding surfaces of the fixed plate (171) and the movable plate (173).

10. The amorphous alloy closed three-dimensional winding variable high and low voltage coil winding integrated machine according to claim 9, characterized in that: The unwinding unit (1) further comprises a limiting device (18) arranged downstream of the dust removal device (17), the limiting device (18) comprising a vertical plate (181) horizontally slidably connected to the first frame (11), the vertical plate (181) being a C-shaped structure, two position-adjustable limiting rollers (182) being arranged on the vertical plate (181), and the foil being located between the two limiting rollers (182).

Images