One-time forming method of single-turn frame type flat copper pole phase assembly coil

Abstract

The invention discloses a one-time forming method of a single-turn frame-type flat copper pole-phase assembly coil, which realizes one-time forming when the pole-phase assembly coil is manufactured, a single-turn flat copper continuously-wound fusiform coil is obtained by winding in a multi-strand parallel winding mode, and the single-turn flat copper continuously-wound fusiform coil is generally composed of six single-turn flat copper fusiform coils which are wound in series; a tool of a stator iron core where a pole-phase group coil is located is simulated and constructed after the pole-phase group coil is embedded into the stator iron core, and a single-turn flat copper continuous winding fusiform coil is formed into a single-turn frame type flat copper pole-phase group coil through the tool. The tool can synchronously perform expansion shaping on the single-turn flat copper fusiform coil to form a single-turn frame type flat copper pole phase group coil at one time; therefore, the consistency of the pole-phase assembly coil is ensured, the forming quality of the single-turn frame type flat copper pole-phase assembly coil is improved, and the investment cost of tool equipment is reduced.

Description

Technical Field

[0001] The invention relates to a forming and shaping tool for a generator stator coil, in particular to a tool for synchronously forming and shaping a single-turn flat copper shuttle coil into a single-turn frame-type flat copper pole phase group coil. Background Art

[0002] The stator coils of some marine generators are composed of single-turn frame-type flat copper pole phase group coils, which are distributed in the adjacent 6 slots of the same pole phase group of the motor stator. The pole phase group coils are composed of multiple single-turn (multi-strand parallel) frame coils connected in series. The prior art process for preparing such coils and embedding them into the motor stator slots is as follows: first, a single-turn flat copper shuttle coil is made, and then the single-turn flat copper shuttle coil is placed on a coil expansion machine for expansion to obtain a single frame-type flat copper coil that can be directly embedded in the motor stator slot; after multiple single frame-type flat copper coils are formed, each coil is respectively embedded in the 6 slots corresponding to the pole phase group of the stator core, and finally, the embedded 6 coils are welded in series in sequence to form a pole phase group coil of the same pole phase group; the above process results in a large number of welding points and wrapping points of the pole phase group coil, which greatly reduces the conductive reliability of the stator winding.

[0003] In order to improve the conductive reliability of the pole phase group coil winding, some motor manufacturers have begun to adopt the process of first making a single-turn frame-type flat copper pole phase group coil, and then embedding it as a whole into the adjacent 6 stator core slots of the same pole phase group of the stator core. The specific method of this process is: first make a single-turn flat copper shuttle coil with six turns, and then place the single-turn flat copper shuttle coil with six turns on the modified expansion machine for expansion of an approximate shape, so that it is initially formed into the shape of a single-turn frame-type flat copper pole phase group coil, and then place it on the shaping machine. The die is precisely shaped to form a single-turn frame-type flat copper pole phase group coil that can be directly embedded with wires; using this process, the existing expansion machine must first be modified to make it suitable for the expansion of multi-turn shuttle coils. The expansion machine is difficult to modify and the modified expansion machine can no longer expand a single coil. In addition, the coil must be shaped after expansion, and an additional shaping die must be developed and manufactured; this method causes a substantial increase in the manufacturing cost of tooling equipment, and the efficiency of forming the single-turn frame-type flat copper pole phase group coil is not improved. Summary of the invention

[0004] The invention provides a one-time forming method for a single-turn frame type flat copper pole phase group coil, which realizes one-time forming when manufacturing the pole phase group coil and improves the forming quality of the coil.

[0005] The present invention solves the above technical problems through the following technical solutions: The overall concept of the present invention is: firstly, a single-turn flat copper continuous winding shuttle coil is obtained by winding multiple strands in parallel, and the single-turn flat copper continuous winding shuttle coil is generally composed of six single-turn flat copper shuttle coils connected in series; a tooling of the stator core where the pole phase group coil is located is simulated and constructed when the pole phase group coil has been embedded in the stator core, and the single-turn flat copper continuous winding shuttle coil is formed into a single-turn frame-type flat copper pole phase group coil by the tooling, so that the tooling can simultaneously expand and shape the single-turn flat copper shuttle coil into a single-turn frame-type flat copper pole phase group coil in one step; thereby ensuring the consistency of the pole phase group coil, improving the forming quality of the single-turn frame-type flat copper pole phase group coil, and reducing the investment cost of tooling equipment.

[0006] A synchronous expansion and shaping tool for a single-turn frame-type flat copper pole phase group coil, comprising a working platform and a single-turn flat copper continuous winding shuttle coil, wherein the single-turn flat copper continuous winding shuttle coil is formed by winding a plurality of parallel flat copper wires in a continuous winding manner, and is formed with an upper edge of the shuttle coil, a lower edge of the shuttle coil and a slanted side edge of the shuttle coil, a front arc-shaped bottom mold block of one-eighth of a cylinder for forming the upper edge of the pole phase group coil and a rear arc-shaped bottom mold block of three-eighths of a cylinder for forming the lower edge of the pole phase group coil are fixedly arranged on the working platform, the central axis of the circle where the top arc surface of the front arc-shaped bottom mold block is located coincides with the central axis of the circle where the top arc surface of the rear arc-shaped bottom mold block is located, and an arc-shaped step is arranged between the top arc surface of the front arc-shaped bottom mold block and the top arc surface of the rear arc-shaped bottom mold block; a straight arc surface of the upper edge of the forming coil is arranged in the middle of the top arc surface of the front arc-shaped bottom mold block, and a curved ... The top arc surface of the front arc-shaped bottom mold block on both sides of the upper straight arc surface of the forming coil is provided with an upper beveled conical arc surface of the forming coil, and upper side strips are fixedly arranged on the upper straight arc surface of the forming coil in parallel with each other and at equal intervals, an upper side embedding groove is formed between two adjacent upper side strips, and an upper beveled guide positioning block is arranged on the upper beveled conical arc surface of the upper side of the forming coil; the lower straight arc surface of the forming coil is provided in the middle of the top arc surface of the rear arc-shaped bottom mold block, and the lower beveled conical arc surface of the forming coil is provided on the top arc surface of the rear arc-shaped bottom mold block on both sides of the lower straight arc surface of the lower side of the forming coil, and lower side strips are fixedly arranged on the lower straight arc surface of the forming coil in parallel with each other and at equal intervals, a lower side embedding groove is formed between two adjacent lower side strips, and lower beveled guide positioning blocks are arranged on the lower beveled conical arc surface of the forming coil.

[0007] A support shaft of an expandable swing arm frame is fixedly arranged under the table plate of the working platform, and the support shaft of the expandable swing arm frame is arranged at the central axis position of the circle where the top arc surface of the front arc bottom mold block is located; a door-shaped expandable swing arm frame is movably connected to both ends of the support shaft of the expandable swing arm frame, and the lower end of the expandable swing arm frame is movably sleeved on the end of the support shaft of the expandable swing arm frame through a sleeve; a cross beam is arranged on the expandable swing arm frame, and a pair of L-shaped clamps are arranged on the cross beam.

[0008] The lower edges of the shuttle coils of the single-turn flat copper continuous winding shuttle coils are correspondingly embedded in the lower edge embedding grooves, and arc-shaped pressure strips are arranged between the top surfaces of the lower edge strips; the upper edges of the shuttle coils are clamped in a pair of L-shaped clamps.

[0009] An upper top pressure strip is movably arranged in the downwardly opening clamp of the L-shaped clamp, and the lower end of the top screw passes through the top end surface of the L-shaped clamp and is connected to the top end surface of the upper top pressure strip. A lower sealing block insertion groove is arranged at the lower end of the downwardly opening clamp of the L-shaped clamp, and a lower sealing block is movably inserted in the lower sealing block insertion groove, and the upper edge of the shuttle-shaped coil is clamped between the upper top pressure strip and the lower sealing block.

[0010] A twist nose clip is arranged in the middle of the oblique side of the shuttle coil, a U-shaped clip is arranged on the twist nose clip, a clamping pin is arranged at the open end of the U-shaped clip, the middle of the oblique side of the shuttle coil is clamped between the opening of the U-shaped clip and the clamping pin, and a handle is connected to the twist nose clip.

[0011] A one-time forming method for a single-turn frame type flat copper pole phase group coil is formed by a synchronous expansion and shaping tooling of the single-turn frame type flat copper pole phase group coil, characterized in that a front arc bottom mold block with a shape of one eighth of a cylinder for forming the upper edge of the pole phase group coil and a rear arc bottom mold block with a shape of three eighths of a cylinder for forming the lower edge of the pole phase group coil are fixedly arranged on a working platform of the synchronous expansion and shaping tooling, and the central axis of the circle where the top arc surface of the front arc bottom mold block is located is aligned with the central axis of the circle where the top arc surface of the rear arc bottom mold block is located. The central axes of the molded coils coincide with each other; a straight arc surface of the upper side of the forming coil is arranged in the middle of the top arc surface of the front arc bottom mold block, and a beveled conical arc surface of the upper side of the forming coil is arranged on the top arc surface of the front arc bottom mold block on both sides of the straight arc surface of the upper side of the forming coil, upper side strips are fixedly arranged parallel to each other and at equal intervals on the straight arc surface of the upper side of the forming coil, an upper side embedding groove is formed between two adjacent upper side strips, and upper beveled sides are arranged at intervals on the beveled conical arc surface of the upper side of the forming coil. A guiding and positioning block; a straight arc surface of the lower side of the forming coil is arranged in the middle of the top arc surface of the rear arc bottom mold block, and a beveled conical arc surface of the lower side of the forming coil is arranged on the top arc surface of the rear arc bottom mold block on both sides of the straight arc surface of the lower side of the forming coil, and lower side strips are fixedly arranged parallel to each other and at equal intervals on the straight arc surface of the lower side of the forming coil, and a lower side embedding groove is formed between two adjacent lower side strips, and lower beveled guide positioning strips are arranged at intervals on the beveled conical arc surface of the lower side of the forming coil block; a support shaft of an expanding swing arm frame is fixedly arranged under the table of the working platform, and the supporting shaft of the expanding swing arm frame is arranged at the central axis position of the circle where the top arc surface of the front arc bottom mold block is located; a gate-shaped expanding swing arm frame is movably connected at both ends of the supporting shaft of the expanding swing arm frame, and the lower end of the expanding swing arm frame is movably sleeved on the end of the supporting shaft of the expanding swing arm frame through a sleeve; a crossbeam is arranged on the expanding swing arm frame, and a pair of L-shaped clamps are arranged on the crossbeam; the one-time forming method of the single-turn frame-type flat copper pole phase group coil comprises the following steps: The first step is to make a single-turn flat copper continuous-wound shuttle coil by continuous winding of multiple strands of parallel-wound flat copper wires, each coil having an upper side of the shuttle coil, a lower side of the shuttle coil and a slanted side of the shuttle coil; The second step is to embed the lower edges of each shuttle coil of the single-turn flat copper continuous winding shuttle coil into the lower edge embedding groove accordingly, and to arrange an arc-shaped pressure strip between the top surfaces of each lower edge strip to press the lower edges of each shuttle coil tightly into the lower edge embedding groove; Step 3: Swing the expansion arm frame backward to the top of the single-turn flat copper continuous winding shuttle coil, and then clamp the upper edge of the shuttle coil of the frontmost coil in the single-turn flat copper continuous winding shuttle coil in a pair of L-shaped clamps; Step 4: a twist nose clip is arranged at the middle of the oblique side of the shuttle coil of the frontmost coil in the single-turn flat copper continuous winding shuttle coil, and the twist nose of the coil is clamped; The fifth step is to swing the expansion swing arm frame forward to expand and shape the frontmost coil in the single-turn flat copper continuous shuttle coil, so that the two oblique sides of the coil are formed under the guidance of the lower oblique side guide positioning block and the upper oblique side guide positioning block. In this process, the twist nose of the coil is kept in a loose state by the twist nose clamp until the upper side of the shuttle coil is pulled to the front end above the upper side embedded groove, and then, a pair of L-shaped clamps are released to press the upper side of the shuttle coil down and embed it into the upper side embedded groove, take the upper side embedded rear pressure strip, and crimp the upper side embedded rear pressure strip into the upper side embedded groove above the upper side of the shuttle coil, and finally, take the upper side pressure block and fix it between the two adjacent upper side strips to form a fixed pressure on the upper side of the embedded shuttle coil; thereby completing the expansion and shaping of the frontmost coil in the single-turn flat copper continuous shuttle coil.

[0012] Step 6. Swing the expansion swing arm frame backward for the second time to the top of the single-turn flat copper continuous shuttle coil, and then clamp the upper edge of the shuttle coil of the second coil on the front side of the single-turn flat copper continuous shuttle coil in a pair of L-shaped clamps; repeat the steps from step 4 to step 5 to complete the expansion and shaping of the second coil on the front side of the single-turn flat copper continuous shuttle coil; repeat this cycle until the expansion and shaping of each coil of the single-turn flat copper continuous shuttle coil are completed.

[0013] After removing the upper edge pressure block, the twist nose clamp and the arc strip, and taking out the upper edge and embedding the rear strip, the formed single-turn frame-type flat copper pole phase group coil is taken out from the front arc bottom mold and the rear arc bottom mold, and the lower edge of the shuttle-shaped coil forms the lower edge of the single-turn frame-type flat copper pole phase group coil. After the upper edge of the shuttle-shaped coil is pulled and expanded, the upper edge of the single-turn frame-type flat copper pole phase group coil is formed, and the twist nose of the single-turn frame-type flat copper pole phase group coil is formed in the middle of the oblique side of the shuttle-shaped coil.

[0014] The present invention uses a single-turn flat copper continuous winding shuttle coil as a raw material, and integrates the two processes of expansion and shaping into the tooling. The operation is convenient and efficient. The formed single-turn frame-type flat copper pole phase group coil has good consistency, which speeds up the production and installation of the motor stator coil and reduces the investment cost of non-standard tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the present invention when a single-turn flat copper continuous winding shuttle coil is expanded and shaped; Figure 2 It is a schematic structural diagram of the expansion swing arm frame 3 of the present invention when it is connected to the upper edge 28 of the shuttle coil; Figure 3 It is a structural schematic diagram of a single-turn flat copper continuous-wound shuttle coil of the present invention; Figure 4 It is a structural schematic diagram of the working platform 1 of the present invention; Figure 5 It is a schematic diagram of the tooling structure of the present invention; Figure 6 It is a schematic structural diagram of the top curved surface of the front curved bottom mold block 11 and the top curved surface of the rear curved bottom mold block 12 of the present invention; Figure 7 It is a structural schematic diagram of the expansion swing arm frame 3 of the present invention; Figure 8 is a schematic structural diagram of the nose twist clip 29 of the present invention; Fig. 9 It is a schematic structural diagram of a formed single-turn frame-type flat copper pole phase group coil of the present invention. DETAILED DESCRIPTION

[0016] The present invention is described in detail below in conjunction with the accompanying drawings: A synchronous expansion and shaping tool for a single-turn frame-type flat copper pole phase group coil, comprising a working platform 1 and a single-turn flat copper continuous winding shuttle coil, wherein the single-turn flat copper continuous winding shuttle coil is formed by winding a plurality of parallel flat copper wires in a continuous winding manner, wherein the group of coils is generally composed of 6-8 single-turn shuttle coils connected in series, wherein the group of coils is used as a raw material, and after expansion and shaping, a group of pole phase group coils is formed, and the formed group of pole phase group coils can be integrally embedded in the stator core of a motor to form coils of the same pole phase group; each shuttle coil in the single-turn flat copper continuous winding shuttle coil is provided with an upper edge 28 of the shuttle coil, a lower edge 26 of the shuttle coil and a bevel side edge 27 of the shuttle coil; during the working A front arc-shaped bottom mold block 11 of one eighth of a cylinder for forming the upper edge of the pole phase group coil and a rear arc-shaped bottom mold block 12 of three eighths of a cylinder for forming the lower edge of the pole phase group coil are fixedly arranged on the platform 1. The front arc-shaped bottom mold block 11 is a horizontally placed one eighth of a cylinder, and the arc surface of the one eighth of a cylinder is designed to simulate the state of the electrode core embedded in the upper edge of the single-turn frame flat copper pole phase group coil. The arc surface of the one eighth of a cylinder also becomes a supporting embedding mold for the upper edge 28 of the bulging shuttle coil. Similarly, the rear arc-shaped bottom mold block 12 is a horizontally placed three eighths of a cylinder, and the arc surface of the three eighths of a cylinder It is designed to simulate the state of the electrode core embedded in the lower edge of the single-turn frame-type flat copper pole phase group coil. The arc surface of the three-eighths cylinder also becomes the supporting embedding mold for the lower edge 26 of the bulging shuttle coil. The front arc bottom mold block 11 and the rear arc bottom mold block 12 are fixed on the working platform 1 after docking to form an bulging shaping mold; the central axis of the circle where the top arc surface of the front arc bottom mold block 11 is located and the central axis of the circle where the top arc surface of the rear arc bottom mold block 12 is located are overlapped, and an arc step is provided between the top arc surface of the front arc bottom mold block 11 and the top arc surface of the rear arc bottom mold block 12 to simulate a single turn. The forming support surface of the upper side, lower side and side bevel of the frame-type flat copper pole phase group coil; a straight arc surface 23 of the upper side of the forming coil is arranged in the middle of the top arc surface of the front arc bottom mold block 11, and the upper bevel conical arc surface 24 of the upper side of the forming coil is arranged on the top arc surface of the front arc bottom mold block 11 on both sides of the upper straight arc surface 23 of the forming coil, and upper side strips 17 are fixedly arranged parallel to each other and at equal intervals on the upper straight arc surface 23 of the forming coil, and an upper side embedding groove 18 is formed between two adjacent upper side strips 17, and an upper bevel guide positioning block 19 is arranged on the upper bevel conical arc surface 24 of the forming coil;A straight arc surface 21 of the lower side of the forming coil is arranged in the middle of the top arc surface of the rear arc bottom mold block 12, and a beveled conical arc surface 22 of the lower side of the forming coil is arranged on the top arc surface of the rear arc bottom mold block 12 on both sides of the straight arc surface 21 of the lower side of the forming coil, and lower side strips 13 are fixedly arranged parallel to each other and at equal intervals on the straight arc surface 22 of the lower side of the forming coil, and a lower side embedding groove 14 is formed between two adjacent lower side strips 13, and lower beveled guide positioning blocks 16 are arranged at intervals on the beveled conical arc surface 22 of the lower side of the forming coil; the lower side embedding groove 14 is a single-turn flat copper continuous winding The lower edge of the shuttle coil provides a positioning support fixing groove. After the single-turn flat copper continuous winding shuttle coil is expanded and shaped into a single-turn frame-type flat copper pole phase group coil by pulling the upper edge 28 of the shuttle coil, the upper edge is embedded in the groove 18 to provide a positioning forming fixing groove for the upper edge 33 of the expanded single-turn frame-type flat copper pole phase group coil. During the entire expansion process, the arc-shaped top surface of the mold and the guide positioning block synchronously expand and shape the oblique side edge 27 of the shuttle coil into the side oblique edge of the single-turn frame-type flat copper pole phase group coil; a tooling synchronously realizes expansion and shaping, so that the single-turn flat copper continuous winding shuttle coil is formed into a single-turn frame-type flat copper pole phase group coil at one time. ;

[0017] A support shaft 2 of an expansion arm frame is fixedly arranged under the table of the working platform 1, and the expansion arm frame support shaft 2 is arranged at the central axis position of the circle where the top arc surface of the front arc bottom mold block 11 is located; a gate-shaped expansion arm frame 3 is movably connected to both ends of the expansion arm frame support shaft 2, and the lower end of the expansion arm frame 3 is movably sleeved on the end of the expansion arm frame support shaft 2 through a sleeve 4; a crossbeam 5 is arranged on the expansion arm frame 3, and a pair of L-shaped clamps 6 are arranged on the crossbeam 5; the expansion arm frame 3 can be operated to swing, so as to realize the expansion of the single-turn flat copper continuous winding shuttle coil.

[0018] The lower edges 26 of each shuttle coil of the single-turn flat copper continuous shuttle coil are correspondingly embedded in the lower edge embedding groove 14, and an arc-shaped pressure strip 15 is arranged between the top end surfaces of each lower edge strip 13. The arc-shaped pressure strip 15 positions, fixes and presses the lower edges of each single-turn flat copper continuous shuttle coil embedded in the corresponding lower edge embedding groove 14; the upper edges 28 of the shuttle coil are clamped in a pair of L-shaped clamps 6, and the expansion swing arm frame 3 realizes the pulling and expansion of the upper edges of the single-turn flat copper continuous shuttle coil through a pair of L-shaped clamps 6.

[0019] An upper top pressure strip 8 is movably arranged in the downwardly opening clamping jaw of the L-shaped clamp 6, and the lower end of the top screw 7 passes through the top end surface of the L-shaped clamp 6 and is connected to the top end surface of the upper top pressure strip 8. A lower sealing block insertion groove 9 is arranged at the lower end of the downwardly opening clamping jaw of the L-shaped clamp 6, and a lower sealing block 10 is movably inserted in the lower sealing block insertion groove 9, and the upper edge 28 of the shuttle coil is clamped between the upper top pressure strip 8 and the lower sealing block 10.

[0020] A twist nose clip 29 is arranged in the middle of the oblique side 27 of the shuttle coil, a U-shaped clip 30 is arranged on the twist nose clip 29, and a snap-in pin 31 is arranged at the open end of the U-shaped clip 30. The middle of the oblique side of the shuttle coil is clamped between the opening of the U-shaped clip 30 and the snap-in pin 31, and a handle 32 is connected to the twist nose clip 29; since the oblique side 27 of the shuttle coil is also composed of multiple strands of flat copper wire wound in parallel, the multiple strands of flat copper wire are fixed by the twist nose clip 29, and at the same time, they are shaped into a twist nose shape.

[0021] A one-time forming method for a single-turn frame type flat copper pole phase group coil is formed by a synchronous expansion and shaping tooling of the single-turn frame type flat copper pole phase group coil. A front arc bottom mold block 11 with a one-eighth cylindrical shape for forming the upper edge of the pole phase group coil and a rear arc bottom mold block 12 with a three-eighth cylindrical shape for forming the lower edge of the pole phase group coil are fixedly arranged on a working platform 1 of the synchronous expansion and shaping tooling. The center axis of the circle where the top arc surface of the front arc bottom mold block 11 is located coincides with the center axis of the circle where the top arc surface of the rear arc bottom mold block 12 is located. A straight arc surface 23 of the upper side of the forming coil is provided in the middle of the top arc surface of the front arc bottom mold block 11, and upper beveled conical arc surfaces 24 of the upper side of the forming coil are provided on the top arc surfaces of the front arc bottom mold block 11 on both sides of the upper straight arc surface 23 of the upper side of the forming coil, upper side strips 17 are fixedly provided parallel to each other and at equal intervals on the upper straight arc surface 23 of the upper side of the forming coil, an upper side embedding groove 18 is formed between two adjacent upper side strips 17, and upper beveled guide positioning blocks 19 are provided at intervals on the upper beveled conical arc surface 24 of the upper side of the forming coil; A straight arc surface 21 of the lower side of the forming coil is arranged in the middle of the top arc surface of the rear arc bottom mold block 12, and a beveled conical arc surface 22 of the lower side of the forming coil is arranged on the top arc surface of the rear arc bottom mold block 12 on both sides of the straight arc surface 21 of the lower side of the forming coil. On the straight arc surface 22 of the lower side of the forming coil, lower side strips 13 are fixedly arranged parallel to each other and at equal intervals, and a lower side embedding groove 14 is formed between two adjacent lower side strips 13. Lower beveled guide positioning blocks are arranged at intervals on the beveled conical arc surface 22 of the lower side of the forming coil. 16; a support shaft 2 of an expanding swing arm frame is fixedly arranged below the table of the working platform 1, and the supporting shaft 2 of the expanding swing arm frame is arranged at the central axis position of the circle where the top arc surface of the front arc bottom mold block 11 is located; a gate-shaped expanding swing arm frame 3 is movably connected at both ends of the supporting shaft 2 of the expanding swing arm frame, and the lower end of the expanding swing arm frame 3 is movably sleeved on the end of the supporting shaft 2 of the expanding swing arm frame through a sleeve 4; a crossbeam 5 is arranged on the expanding swing arm frame 3, and a pair of L-shaped clamps 6 are arranged on the crossbeam 5; the one-time forming method of the single-turn frame-type flat copper pole phase group coil comprises the following steps: The first step is to make a single-turn flat copper continuous-wound shuttle coil by continuous winding of multiple strands of parallel-wound flat copper wires, each coil having a shuttle coil upper layer edge 28, a shuttle coil lower layer edge 26 and a shuttle coil oblique side edge 27; Step 2: The lower edges 26 of the shuttle coils of the single-turn flat copper continuous winding shuttle coils are correspondingly embedded in the lower edge embedding grooves 14, and arc-shaped pressure strips 15 are arranged between the top surfaces of the lower edge strips 13 to press the lower edges 26 of the shuttle coils tightly into the lower edge embedding grooves 14; Step 3: Swing the expansion arm frame 3 backward to the top of the single-turn flat copper continuous winding shuttle coil, and then clamp the shuttle coil upper edge 28 of the frontmost coil in the single-turn flat copper continuous winding shuttle coil in a pair of L-shaped clamps 6; Step 4: a twist nose clip 29 is provided at the middle of the oblique side edge 27 of the frontmost coil in the single-turn flat copper continuous winding shuttle coil, and the twist nose of the coil is clamped; Step 5: Swing the expansion swing arm frame 3 forward to expand and shape the frontmost coil in the single-turn flat copper continuous shuttle coil, so that the two oblique sides of the coil are formed under the guidance of the lower oblique side guide positioning block 16 and the upper oblique side guide positioning block 19. In this process, the twist nose of the coil is kept in a loose state by the twist nose clamp 29 until the upper side 28 of the shuttle coil is pulled to the top of the upper side of the front end and embedded in the groove 18. Then, release a pair of L-shaped clamps 6 to The upper edge 28 of the shuttle coil is pressed down and embedded into the upper edge embedding groove 18, and the upper edge embedding rear pressure strip 25 is taken out, and the upper edge embedding rear pressure strip 25 is crimped into the upper edge embedding groove 18 above the upper edge 28 of the shuttle coil. Finally, the upper edge pressing block 20 is taken out and fixedly connected between two adjacent upper edge strips 17 to form a fixed compression of the embedded upper edge 28 of the shuttle coil; thereby completing the expansion and shaping of the frontmost coil in the single-turn flat copper continuous winding shuttle coil.

[0022] Step 6. Swing the expansion swing arm frame 3 backward for the second time to the top of the single-turn flat copper continuous shuttle coil, and then clamp the upper edge 28 of the shuttle coil of the second coil on the front side of the single-turn flat copper continuous shuttle coil in a pair of L-shaped clamps 6; repeat the steps from step 4 to step 5 to complete the expansion and shaping of the second coil on the front side of the single-turn flat copper continuous shuttle coil; repeat this cycle until the expansion and shaping of each coil of the single-turn flat copper continuous shuttle coil are completed.

[0023] After removing the upper edge pressing block 20, the twist nose clamp 29 and the arc-shaped pressure strip 15, and taking out the upper edge embedded in the rear pressure strip 25, the formed single-turn frame-type flat copper pole phase group coil is taken out from the front arc-shaped bottom mold 11 and the rear arc-shaped bottom mold 12, and the lower edge 26 of the shuttle-shaped coil forms the lower edge of the single-turn frame-type flat copper pole phase group coil. After the upper edge 28 of the shuttle-shaped coil is pulled and expanded, the upper edge 33 of the single-turn frame-type flat copper pole phase group coil is formed, and the twist nose of the single-turn frame-type flat copper pole phase group coil is formed in the middle of the oblique side 27 of the shuttle-shaped coil.

Claims

1. A one-time forming method for a single-turn frame type flat copper pole phase group coil is formed by a synchronous expansion and shaping tooling of a single-turn frame type flat copper pole phase group coil, characterized in that: A one-eighth cylindrical front arc bottom mold block (11) for forming the upper edge of the pole phase group coil and a three-eighth cylindrical rear arc bottom mold block (12) for forming the lower edge of the pole phase group coil are fixedly arranged on the working platform (1) of the synchronous expansion and shaping tooling. The center axis of the circle where the top arc surface of the front arc bottom mold block (11) is located coincides with the center axis of the circle where the top arc surface of the rear arc bottom mold block (12) is located. A straight arc surface (23) for forming the upper edge of the coil is arranged in the middle of the top arc surface of the front arc bottom mold block (11). The top arc surface of the front arc bottom mold block (11) on both sides of the layer edge straight edge arc surface (23) is provided with a forming coil upper layer edge beveled tapered arc surface (24), upper layer side strips (17) are fixedly provided on the upper layer edge straight edge arc surface (23) of the forming coil in parallel and at equal intervals, an upper layer side embedding groove (18) is formed between two adjacent upper layer side strips (17), and upper layer beveled guide positioning blocks (19) are provided at intervals on the upper layer edge beveled tapered arc surface (24) of the forming coil; a forming coil lower layer edge is provided in the middle of the top arc surface of the rear arc bottom mold block (12) A straight-edge arc surface (21), a lower layer beveled tapered arc surface (22) of the forming coil is arranged on the top arc surface of the rear arc bottom mold block (12) on both sides of the lower layer straight-edge arc surface (21) of the forming coil, lower layer side strips (13) are fixedly arranged parallel to each other and at equal intervals on the lower layer straight-edge arc surface (22) of the forming coil, a lower layer side embedding groove (14) is formed between two adjacent lower layer side strips (13), and lower layer beveled guide positioning blocks (16) are arranged at intervals on the lower layer beveled tapered arc surface (22) of the forming coil; a lower layer beveled guide positioning block (16) is fixedly arranged under the table of the working platform (1) A support shaft (2) of an expandable swing arm frame is provided, and the expandable swing arm frame support shaft (2) is provided at the central axis position of the circle where the top arc surface of the front arc bottom mold block (11) is located; a gate-shaped expandable swing arm frame (3) is movably connected to both ends of the expandable swing arm frame support shaft (2), and the lower end of the expandable swing arm frame (3) is movably sleeved on the end of the expandable swing arm frame support shaft (2) through a sleeve (4); a crossbeam (5) is provided on the expandable swing arm frame (3), and a pair of L-shaped clamps (6) are provided on the crossbeam (5); the one-time molding method of the single-turn frame-type flat copper pole phase group coil comprises the following steps: The first step is to make a single-turn flat copper continuous-wound shuttle coil by continuous winding of multiple strands of parallel-wound flat copper wires, each coil having a shuttle coil upper layer edge (28), a shuttle coil lower layer edge (26) and a shuttle coil oblique side edge (27); The second step is to embed the lower edges (26) of each shuttle coil of the single-turn flat copper continuous shuttle coil into the lower edge embedding groove (14) accordingly, and to arrange an arc-shaped pressure strip (15) between the top surfaces of each lower edge strip (13) to press the lower edges (26) of each shuttle coil into the lower edge embedding groove (14); Step 3: Swing the expansion arm frame (3) backward to the top of the single-turn flat copper continuous winding shuttle coil, and then clamp the shuttle coil upper layer edge (28) of the frontmost coil in the single-turn flat copper continuous winding shuttle coil in a pair of L-shaped clamps (6); Step 4: a twist nose clip (29) is provided at the middle of the oblique side edge (27) of the shuttle coil of the frontmost coil in the single-turn flat copper continuous winding shuttle coil, and the twist nose of the coil is clamped; Step 5: Swing the expansion swing arm frame (3) forward to expand and shape the frontmost coil in the single-turn flat copper continuous shuttle coil, so that the two oblique sides of the coil are formed under the guidance of the lower oblique side guide positioning block (16) and the upper oblique side guide positioning block (19). During this process, the twist nose of the coil is kept in a loose state by the twist nose clamp (29) until the upper side (28) of the shuttle coil is pulled to the top of the upper side of the front end and embedded in the groove (18). Then, release the pair of L-shaped clamps (6) to release the shuttle coil. The upper edge (28) of the shuttle coil is pressed down and embedded into the upper edge embedding groove (18), the upper edge embedding rear pressure strip (25) is taken, and the upper edge embedding rear pressure strip (25) is crimped into the upper edge embedding groove (18) above the upper edge (28) of the shuttle coil. Finally, the upper edge pressing block (20) is taken and fixedly connected between two adjacent upper edge strips (17) to form a fixed compression of the upper edge (28) of the embedded shuttle coil; thereby completing the expansion and shaping of the frontmost coil in the single-turn flat copper continuous winding shuttle coil.

2. A one-time forming method for a single-turn frame-type flat copper pole phase group coil according to claim 1, characterized in that: Step 6: Swing the expansion swing arm frame (3) backward for the second time to the top of the single-turn flat copper continuous winding shuttle coil, and then clamp the shuttle coil upper layer edge (28) of the second coil on the front side of the single-turn flat copper continuous winding shuttle coil in a pair of L-shaped clamps (6); repeat the steps from step 4 to step 5 to complete the expansion shaping of the second coil on the front side of the single-turn flat copper continuous winding shuttle coil; and repeat this cycle until the expansion and shaping of each coil of the single-turn flat copper continuous winding shuttle coil are completed.

3. A one-time forming method for a single-turn frame-type flat copper pole phase group coil according to claim 2, characterized in that: After removing the upper edge pressing block (20), the twist nose clamp (29) and the arc-shaped pressure strip (15), and taking out the upper edge embedded in the rear pressure strip (25), the formed single-turn frame-type flat copper pole phase group coil is taken out from the front arc bottom mold (11) and the rear arc bottom mold (12), and the lower edge (26) of the shuttle coil forms the lower edge of the single-turn frame-type flat copper pole phase group coil. After the upper edge (28) of the shuttle coil is pulled and expanded, it forms the upper edge (33) of the single-turn frame-type flat copper pole phase group coil. The middle part of the oblique side edge (27) of the shuttle coil forms the twist nose of the single-turn frame-type flat copper pole phase group coil.

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