A DC transformer coil start winding tool and method

Abstract

The present invention relates to a DC transformer coil start winding tooling and method. When the coil is wound, an electrostatic plate is sleeved on a cardboard tube, and an electrostatic plate U-shaped pad is provided on the electrostatic plate. The first turn of the first section and a support plate are both provided on the electrostatic plate U-shaped pad, and the inner side of the support plate is against the outer side of the first turn of the first section. The remaining layers of turns of the first section are wound on the cardboard tube from bottom to top in sequence, and the lower side of the second turn of the first section is supported by the support plate. The U-shaped pad is placed on the upper side of the second-to-last turn of the first section, and the uppermost turn of the first section is provided in the U-shaped pad. An inner angle ring is provided between adjacent U-shaped pads, and a bottom transposition position for coil transposition bending is formed above the U-shaped pad. The lower side of the first turn of the first section is provided with a coil lower protrusion, and the coil lower protrusion is fixed on the winding mold when the coil is wound flat. The present invention reduces the operational difficulty of the coil start winding, can realize single-person operation, improves production efficiency, and saves tooling costs.

Description

Technical Field

[0001] The invention relates to the field of transformer production, in particular to a DC transformer coil start winding tool and method. Background Art

[0002] In the prior art, the starting method for winding the coil of a DC transformer requires placing step pads according to the number of support bars and the position of the label, then fixing the head, and then using the step pads to wind the first section of the coil. After the winding is completed, take out the step blocks, and then place the angle rings and U-shaped pads according to the requirements of the drawing. The whole process requires two people to cooperate to complete, and a high degree of tacit understanding is required. Even for a skilled winding worker, it takes an average of more than 6 hours to wind the coil. The operation is difficult and the efficiency is low. In addition, the step pads require special materials and high production size requirements. They need to be prepared during the winding process. If they are not prepared in time, production will often be delayed. Summary of the invention

[0003] The purpose of the present invention is to provide a DC transformer coil start winding tool and method, which reduces the operational difficulty of the coil start winding, can be operated by one person, improves production efficiency, and saves tooling costs.

[0004] The objective of the present invention is achieved through the following technical solutions:

[0005] A DC transformer coil start winding tool comprises an electrostatic plate, an electrostatic plate U-shaped pad, a support plate and a U-shaped pad. When the coil is wound, the electrostatic plate is sleeved on a cardboard tube, and the electrostatic plate is provided with an electrostatic plate U-shaped pad. The first turn of the first section and the support plate are both provided on the electrostatic plate U-shaped pad, and the inner side of the support plate is against the outer side of the first turn of the first section. The remaining layers of turns of the first section are wound on the cardboard tube from bottom to top in sequence, and the lower side of the second turn of the first section is supported by the support plate. The U-shaped pad is placed on the upper side of the second-to-last turn of the first section, and the uppermost turn of the first section is provided in the U-shaped pad. An inner angle ring is provided between adjacent U-shaped pads, and a bottom transposition position for conductor transposition and bending is formed above the U-shaped pad. A lower coil protrusion is provided on the lower side of the first turn of the first section, and the lower coil protrusion is fixed on a winding mold when the coil is wound flat.

[0006] Inner angle ring overlap portions are provided at both ends of the inner angle ring, and the inner angle ring overlap portions are placed in the U-shaped pads on the corresponding sides.

[0007] The thickness of the support plate is the same as the width of a single wire.

[0008] A method for winding a DC transformer coil starting tool according to the above method comprises the following steps:

[0009] Step 1: Put an electrostatic plate on the cardboard tube, and evenly distribute a plurality of electrostatic plate U-shaped pads on the electrostatic plate along the circumferential direction;

[0010] Step 2: reserve the length of the lower end of the coil, fix the lower end of the coil on the winding mold, and wind the first turn of the first section along the circumference of the cardboard tube on the upper side of the U-shaped pad of the electrostatic plate;

[0011] Step 3: Place each support plate on the corresponding U-shaped pad of the electrostatic plate along the circumferential direction of the paperboard tube, and make the inner side of the support plate close to the first turn of the first section, and then flatly wind the first second turn of the first section on the upper side of the first turn of the first section, and the lower side of the first second turn of the first section is supported by the support plate;

[0012] Step 4: Wind the remaining turns of the first section except the top turn from bottom to top above the second turn of the first section;

[0013] Step 5: evenly distribute the U-shaped pads on the upper side of the second-to-last layer of turns of the first section along the circumferential direction of the paperboard tube, and flatly wind the uppermost layer of turns of the first section above the second-to-last layer of turns of the first section, and the uppermost layer of turns of the first section is arranged in the U-shaped pads, and during the flat winding process of the uppermost layer of turns of the first section, each conductor is transposed and bent at the corresponding bottom transposition position, and during the flat winding transposition process, inner angle rings are sequentially placed between adjacent U-shaped pads along the circumferential direction, and the overlapping parts of the inner angle rings are adjusted on the U-shaped pads;

[0014] Step 6: Loosen the lower end of the coil and remove the support plate, move the lower end of the coil in the opposite direction of winding, and drop the reverse segment wire on the U-shaped pad of the electrostatic plate turn by turn, so that each turn of the wire is aligned and the tightness of the wire segment is re-adjusted.

[0015] The advantages and positive effects of the present invention are:

[0016] 1. The present invention first reserves the length of the coil extension, adopts the flat winding method, and uses a support plate instead of a step pad to fill the position, thereby reducing the difficulty of winding the first section of the coil and enabling single-person operation. Compared with the prior art, the present invention takes an average of about 3 hours to wind the first section, and the work efficiency is significantly improved.

[0017] 2. The present invention can place the angle ring and U-shaped pad during the process of conductor transposition and bending. Finally, open the temporary binding tape at the lower end of the coil and then take out the support plate. Loosen the fixed conductor head in the opposite direction and drop the conductor turn by turn on the U-shaped pad of the electrostatic plate to complete the first section of winding. Compared with the prior art, first take out the step block and then place the angle ring and U-shaped pad according to the requirements of the drawing. The whole process is simplified and the size requirements can be guaranteed.

[0018] 3. The present invention eliminates the high-cost single customized step spacer and uses a wooden support plate with the same thickness as the width of a single conductor instead, thereby saving tooling production costs, and is simple to manufacture without delaying production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the flat winding method of the present invention,

[0020] Figure 2 It is a top view of the flat winding method of the present invention,

[0021] Figure 3 This is a left side view of the flat winding method of the present invention.

[0022] Figure 4 This is a schematic diagram of the reverse section of the winding method of the present invention.

[0023] Figure 5 The top view is completed for the reverse section of the winding method of the present invention.

[0024] Among them, 1 is a cardboard tube, 2 is a bottom transposition position, 3 is a U-shaped pad, 4 is an electrostatic plate, 5 is the lower end of the coil, 6 is an electrostatic plate U-shaped pad, 7 is a support plate, 8 is the fourth turn of the first section, 9 is the third turn of the first section, 10 is the second turn of the first section, 11 is the first turn of the first section, 12 is an inner angle ring, and 13 is the lap joint of the inner angle ring. DETAILED DESCRIPTION

[0025] The present invention will be further described below in conjunction with the accompanying drawings.

[0026] like Figures 1 to 5 As shown, the tooling of the present invention comprises an electrostatic plate 4, an electrostatic plate U-shaped pad 6, a support plate 7 and a U-shaped pad 3, wherein the electrostatic plate 4 is sleeved on the paperboard tube 1, and a plurality of electrostatic plate U-shaped pads 6 are evenly distributed on the electrostatic plate 4 along the circumferential direction of the paperboard tube 1, as shown in FIG. Figure 3 As shown, the first turn 11 of the first section is wound on the paperboard tube 1 and arranged on the upper side of the U-shaped pad 6 of the electrostatic plate, as shown in FIG. Figure 2 As shown, a plurality of support plates 7 are evenly distributed along the circumferential direction of the paperboard tube 1 and placed on the corresponding electrostatic plate U-shaped pads 6, and as shown in FIG. Figure 3 As shown, the inner side of the support plate 7 rests on the first section first turn 11, the first section second turn 10 and the first section third turn 9 are wound on the paperboard tube 1 from bottom to top, and the lower side of the first section second turn 10 is supported by the support plate 7, and a plurality of U-shaped pads 3 are evenly distributed on the first section third turn 9 along the circumferential direction of the paperboard tube 1, and as shown Figure 2 As shown, an inner angle ring 12 is provided between adjacent U-shaped pads 3. Figure 3 As shown, the first section of the fourth turn 8 is wound in the U-shaped pad 3 and the inner side and the lower side are in close contact with the inner angle ring 12, and the bottom transposition position 2 of the coil transposition bending is formed above the U-shaped pad 3, as shown in FIG. Figure 1 As shown, the bottom transposition position 2 is arranged between any two adjacent U-shaped pads 3, and each conductor is transposed and bent at the corresponding bottom transposition position 2.

[0027] like Figure 1As shown, the lower side of the first turn 11 forms the lower end of the coil 5, and the first turn 11, the first second turn 10, the first third turn 9 and the first fourth turn 8 are all flat-wound, and when each conductor is flat-wound, the lower end 5 of the coil is fixed to the winding mold by a binding tape.

[0028] like Figure 2 As shown, inner angle ring lap portions 13 are provided at both ends of the inner angle ring 12, and the inner angle ring lap portions 13 are placed in the U-shaped pad 3 on the corresponding side.

[0029] like Figure 3 As shown, the thickness of the support plate 7 is the same as the width of a single conductor and is used to temporarily supplement the first section of the first turn 11 when the coil is wound flatly, and at the same time support the first section of the second turn 10. After the winding is completed, open the temporary binding belt at the lower end 5 of the coil and take out the support plate 7.

[0030] The working principle of the present invention is:

[0031] The winding method of the present invention comprises the following steps:

[0032] Step 1: Put the electrostatic plate 4 on the enclosed paperboard tube 1, and evenly distribute a plurality of electrostatic plate U-shaped pads 6 on the electrostatic plate 4 along the circumference of the paperboard tube 1;

[0033] Step 2: If Figure 1 As shown, the length of the lower end 5 of the coil is reserved according to the size of the drawing, and the lower end 5 of the coil is fixed to the winding mold with a binding tape. The winding mold is a well-known technology in the art. The first section of the first turn 11 is wound along the circumferential direction of the cardboard tube 1 according to the drawing and the number of roots and turns. Figure 3 As shown, the first section of the first turn 11 is located on the upper side of the U-shaped pad 6 of the electrostatic plate;

[0034] Step 3: If Figure 2 As shown, each support plate 7 is evenly placed on the corresponding electrostatic plate U-shaped pad 6 along the circumferential direction of the paperboard tube 1, and as shown in Figure 3 As shown, the inner side of the support plate 7 is close to the first section of the first turn wire 11, and then the first section of the second turn wire 10 is wound upward in accordance with the drawing and the number of roots and turns, and the lower side of the first section of the second turn wire 10 is pressed on the support plate 7;

[0035] Step 4: If Figure 3 As shown, above the first section second turn 10, the first section third turn 9 is wound upward in accordance with the drawing and the number of roots and turns (when the number of turns is large, the remaining turns of the first section except the top turn are wound in sequence from bottom to top);

[0036] Step 5: If Figures 2-3As shown, the U-shaped pads 3 are evenly distributed on the upper side of the third turn 9 of the first section along the circumferential direction of the paperboard tube 1 (when the number of turns is large, the U-shaped pads 3 are evenly distributed on the upper side of the second to last layer of turns of the first section), and the fourth turn 8 of the first section is flatly wound upward according to the drawing and the number of roots and turns (when the number of turns is large, the top layer of turns of the first section is flatly wound), and the fourth turn 8 of the first section is placed in the U-shaped pads 3, and during the flat winding process of the fourth turn 8 of the first section, each conductor is transposed and bent at the corresponding bottom transposition position 2, and during the flat winding transposition process, inner angle rings 12 are placed in sequence between adjacent U-shaped pads 3 along the circumferential direction, and the inner angle ring overlap 13 is adjusted and placed on the U-shaped pads 3 to complete the flat winding work;

[0037] Step 6: If Figures 4-5 As shown, loosen the binding tape of the lower end 5 of the coil, remove the support plate 7, move the lower end 5 of the coil in the opposite direction of winding for a certain distance to appropriately expand the diameter of each turn of the coil, and then drop the reverse segment wire on the U-shaped pad 6 of the electrostatic plate turn by turn to make each turn of the wire flush. At the same time, the U-shaped pad 3 falls on the corresponding U-shaped pad 6 of the electrostatic plate. After re-adjusting the tightness of the wire segment, the first winding work can be completed.

Claims

1. A DC transformer coil starter winding tool, characterized by: The invention comprises an electrostatic plate (4), an electrostatic plate U-shaped pad (6), a support plate (7) and a U-shaped pad (3). When the coil is wound, the electrostatic plate (4) is mounted on a paperboard tube (1), and the electrostatic plate U-shaped pad (6) is arranged on the electrostatic plate (4). The first turn wire (11) of the first section and the support plate (7) are both arranged on the electrostatic plate U-shaped pad (6), and the inner side of the support plate (7) abuts against the outer side of the first turn wire (11) of the first section. The remaining turns wires of each layer of the first section are wound on the paperboard tube (1) in sequence from bottom to top. The lower side of the second turn wire (10) of the first section is supported by a support plate (7), a U-shaped pad (3) is placed on the upper side of the second-to-last turn wire of the first section, and the uppermost turn wire of the first section is arranged in the U-shaped pad (3), an inner angle ring (12) is arranged between adjacent U-shaped pads (3), a bottom transposition position (2) for conductor transposition and bending is formed above the U-shaped pad (3), a lower end of the coil (5) is formed on the lower side of the first turn wire (11) of the first section, and the lower end of the coil (5) is fixed when the coil is wound flat.

2. The DC transformer coil start winding tool according to claim 1, characterized in that: Inner angle ring overlap portions (13) are provided at both ends of the inner angle ring (12), and the inner angle ring overlap portions (13) are placed in the U-shaped pads (3) on the corresponding sides.

3. The DC transformer coil starter winding tool according to claim 1, characterized in that: The thickness of the support plate (7) is the same as the width of a single conductive wire.

4. A method for winding the DC transformer coil as claimed in claim 1, characterized in that: The steps include: Step 1: Put an electrostatic plate (4) on the cardboard tube (1), and evenly distribute a plurality of electrostatic plate U-shaped pads (6) on the electrostatic plate (4) along the circumferential direction; Step 2: Reserving the length of the lower end of the coil (5), fixing the lower end of the coil (5) on the winding mold, and winding the first turn (11) of the first section along the circumferential direction of the paperboard tube (1) on the upper side of the U-shaped pad (6) of the electrostatic plate; Step 3: placing each support plate (7) on the corresponding electrostatic plate U-shaped pad (6) along the circumferential direction of the paperboard tube (1), and making the inner side of the support plate (7) close to the first section of the first turn wire (11), and then winding the first section of the second turn wire (10) flatly on the upper side of the first section of the first turn wire (11), and the lower side of the first section of the second turn wire (10) is supported by the support plate (7); Step 4: Winding the remaining turns of the first section except the top turn from bottom to top on the second turn (10) of the first section; Step 5: evenly distribute the U-shaped pads (3) on the upper side of the second-to-last layer of turns of the first section along the circumferential direction of the paperboard tube (1), and flatly wind the top layer of turns of the first section above the second-to-last layer of turns of the first section, and the top layer of turns of the first section is arranged in the U-shaped pads (3), and during the flat winding process of the top layer of turns of the first section, each conductor is transposed and bent at the corresponding bottom transposition position (2), and during the flat winding transposition process, inner angle rings (12) are sequentially placed between adjacent U-shaped pads (3) along the circumferential direction, and the overlapping parts (13) of the inner angle rings are adjusted on the U-shaped pads (3); Step 6: Loosen the lower end of the coil (5) and remove the support plate (7), move the lower end of the coil (5) in the opposite direction of winding to expand the diameter of each turn of the coil, and then drop the reverse segment wire on the U-shaped pad (6) of the electrostatic plate turn by turn to make each turn of the wire flush. At the same time, the U-shaped pad (3) falls on the corresponding U-shaped pad (6) of the electrostatic plate, and then re-arrange the tightness of the wire segment.

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