Flat wire stator expansion device

Abstract

The present application discloses a flat wire stator expansion device, which relates to the field of motor processing technology, including a pre-expansion device and a final expansion device; the pre-expansion device includes a pre-expansion drive mechanism and a pre-expansion mechanism; the pre-expansion drive mechanism is connected to the pre-expansion mechanism; the pre-expansion drive mechanism is used to drive the pre-expansion mechanism to contract to drive the inner copper coin on the stator to be processed to deform, so that the gap between the inner copper wire and the middle copper wire on the stator to be processed increases; the pre-expansion drive mechanism is also used to drive the pre-expansion mechanism to expand to drive the outer copper coin on the stator to be processed to deform, so that the gap between the outer copper wire and the middle copper wire on the stator to be processed increases; the final expansion device is used to expand the stator to be processed after being processed by the pre-expansion device. The three layers of copper wires are separated by the pre-expansion device, so that the expansion pressure head of the final expansion device can be smoothly inserted between the three layers of copper wires, which is conducive to the expansion part of the expansion pressure head to cut in, improve the expansion and bending effects, and meet the processing technology requirements.

Description

Technical Field

[0001] The present application relates to the technical field of motor processing, and in particular to a flat wire stator expanding device. Background Art

[0002] In the manufacturing process of new energy motors, the stator with copper wires inserted needs to be expanded and bent with a flaring device, that is, the copper wires on the stator are flared. Most of the copper wire groups on the stator have 6 groups from the outside to the inside, and two of them are combined into a layer. Taking the outermost group as group 1, then group 1 / 2 forms the outer layer of copper wires, group 3 / 4 forms the middle layer of copper wires, and group 5 / 6 forms the inner layer of copper wires. The middle layer of copper wires will be shorter than the outer layer and the inner layer of copper wires. Most of the flaring devices currently used for stator flaring treatment do not pre-treat the copper wire layer on the stator due to design limitations, but directly flare the copper wires on the stator, which easily leads to poor expansion and bending effects and is difficult to meet the processing technology requirements. Summary of the invention

[0003] In view of this, the purpose of the present application is to provide a flat wire stator expanding device to solve the technical problem that the existing expanding device has poor expansion and bending effects and is difficult to meet the processing requirements.

[0004] In order to achieve the above technical purpose, the present application provides a flat wire stator expansion device, including a pre-expansion device and a final expansion device;

[0005] The pre-expansion device comprises a pre-expansion driving mechanism and a pre-expansion mechanism;

[0006] The pre-expansion driving mechanism is connected to the pre-expansion mechanism;

[0007] The pre-expansion driving mechanism is used to drive the pre-expansion mechanism to contract so as to drive the inner copper wire on the stator to be processed to deform, so that the gap between the inner copper wire and the middle copper wire on the stator to be processed increases;

[0008] The pre-expansion drive mechanism is also used to drive the pre-expansion mechanism to expand so as to drive the outer copper wire on the stator to be processed to deform, so that the gap between the outer copper wire and the middle copper wire on the stator to be processed increases;

[0009] The final expansion device is used to expand the stator to be processed after being processed by the pre-expansion device.

[0010] Further, the pre-expansion mechanism includes a guide plate and a plurality of movable parts;

[0011] The guide plate is fixedly arranged relative to the pre-expansion driving mechanism;

[0012] A plurality of said movable parts are mounted on said guide plate based on the circumference of a preset circular trajectory;

[0013] Each of the movable parts is movably connected to the guide plate along the radial direction of a preset circular trajectory;

[0014] The pre-expansion drive mechanism is connected to the plurality of movable parts, and is used to drive the plurality of movable parts to contract to drive the inner copper wire on the stator to be processed to deform, so that the gap between the inner copper wire and the middle copper wire on the stator to be processed increases;

[0015] The pre-expansion drive mechanism is also used to drive the expansion movement of the plurality of movable parts to drive the deformation movement of the outer copper wire on the stator to be processed, so that the gap between the outer copper wire and the middle copper wire on the stator to be processed is increased.

[0016] Furthermore, the guide plate is provided with a plurality of sliding parts;

[0017] The plurality of movable parts are slidably connected to the sliding part in a one-to-one correspondence;

[0018] Each of the movable parts is provided with a connecting part connected with the pre-expansion driving mechanism, and a moving part contacting with the inner copper wire or the outer copper wire.

[0019] Furthermore, the sliding portion is provided at the bottom of the guide plate;

[0020] The top of the guide plate is provided with a plurality of first limiting grooves into which the connecting parts on the movable member extend one by one;

[0021] The first limiting groove is used to limit the movable displacement of the movable member on the guide plate.

[0022] Further, the pre-expansion driving mechanism includes a pre-expansion driver and a linkage member;

[0023] The pre-expansion driver is connected to each of the connecting parts through the linkage member, and is used to drive the multiple connecting parts to contract or expand.

[0024] Further, the linkage member is arranged above the guide plate and is provided with a plurality of inclined notches corresponding to each other for the connection part to extend into;

[0025] The driving end of the pre-expansion driver is connected to the linkage member, and is used to drive the linkage member to rotate, thereby driving each of the connecting parts to contract or expand.

[0026] Furthermore, a first fixing column is fixed on the guide plate;

[0027] The linkage member is provided with a second limiting groove for the first fixing column to pass through, and is used to limit the rotation angle of the linkage member.

[0028] Furthermore, the pre-expansion mechanism also includes a pre-expansion fixed frame, a pre-expansion movable frame and a first driver;

[0029] The first driver is installed on the pre-expansion fixed frame and connected to the pre-expansion movable frame, and is used to drive the pre-expansion movable frame to move up and down;

[0030] The pre-expansion driving mechanism is installed on the pre-expansion movable frame;

[0031] The guide plate is fixedly connected to the pre-expansion movable frame.

[0032] Further, the final expansion device includes a second driver, a third driver, a shaping pressure head and an expanding pressure head;

[0033] The shaping press head comprises an inner shaping part and an outer shaping part;

[0034] The outer plastic part is arranged around the outer periphery of the inner plastic part, and an annular gap is formed between the outer plastic part and the inner plastic part for all copper wires on the stator to be processed to pass through;

[0035] The second driver is connected to the third driver and the shaping press head, and is used to drive the third driver and the shaping press head to move up and down together;

[0036] The expansion pressure head is movably arranged on the inner plastic part, and has an expansion part that movably extends between the inner copper wire and the middle copper wire and between the outer copper wire and the middle copper wire;

[0037] The third driver is used to drive the expansion pressure head to move, so as to drive the expansion part to press against the inner copper wire, so that the inner copper wire is deformed until its outer wall is in contact with the outer peripheral surface of the inner plastic part;

[0038] The third driver is also used to drive the expansion pressure head to move, so as to drive the expansion part to synchronously press against the outer copper wire, so that the outer copper wire is deformed until its outer wall fits the inner circumference of the outer plastic part.

[0039] Furthermore, the inner plastic part is provided with an inner connecting column which movably passes through the expanding pressure head;

[0040] The outer plastic part is provided with an outer connecting column.

[0041] Furthermore, the final expansion device also includes a final expansion fixed frame and a final expansion movable frame;

[0042] The second driver is mounted on the final expansion fixed frame and connected to the final expansion movable frame;

[0043] The inner plastic part is fixedly connected to the final expansion movable frame through the inner connecting column;

[0044] The outer plastic part is fixedly connected to the final expansion movable frame through the outer connecting column;

[0045] The third driver is mounted on the final expansion movable frame, and the telescopic end can contact the expansion pressure head;

[0046] The expansion pressure head can be in contact with the inner plastic part to move upward along with the inner plastic part.

[0047] Further, the final expansion fixing frame includes a lower fixing plate, an upper fixing plate and a plurality of second fixing columns;

[0048] The lower fixing plate is arranged parallel to and spaced from the upper fixing plate;

[0049] A plurality of the second fixing columns are connected between the upper fixing plate and the lower fixing plate;

[0050] The final expansion movable frame is movably installed between the upper fixed plate and the lower fixed plate, and is provided with a plurality of guide holes corresponding to each other for the second fixed columns to movably pass through;

[0051] The second driver is mounted on the upper fixed plate, and a driving end is connected to the final expansion movable frame.

[0052] Furthermore, it also includes a tray for locating the center and angle of the stator to be processed.

[0053] Further, it also includes a clamping device;

[0054] The clamping device is used for clamping and fixing the stator to be processed.

[0055] Further, the clamping device includes a clamping drive mechanism and two clamping members;

[0056] The clamping drive mechanism is connected to at least one of the clamping members, and is used to drive the connected clamping members to move, so that the two clamping members clamp and fix the stator to be processed.

[0057] It can be seen from the above technical scheme that the flat wire stator expansion device designed in this application includes a pre-expansion device and a final expansion device. The stator to be processed is pre-expanded by the pre-expansion device, so that the gap between the inner copper wire and the middle copper wire on the stator to be processed is increased, and the gap between the outer copper wire and the middle copper wire on the stator to be processed is increased. That is to form a certain gap between the three layers of copper wires, so that the expansion pressure head on the final expansion device can be smoothly inserted between the three layers of copper wires, which is conducive to the expansion part of the expansion pressure head to cut in, thereby improving the expansion and bending effects and meeting the processing technology requirements. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0059] Figure 1 A three-dimensional diagram of the flat wire stator expansion device provided in the present application;

[0060] Figure 2 It is a front view of the flat wire stator expanding device provided in this application;

[0061] Figure 3 A front view of a pre-expansion device of a flat wire stator expansion device provided in the present application;

[0062] Figure 4 A three-dimensional diagram of a pre-expansion device of a flat wire stator expansion device provided in the present application;

[0063] Figure 5 It is a first exploded schematic diagram of the pre-expansion device of the flat wire stator expansion device provided in the present application;

[0064] Figure 6 A second exploded schematic diagram of the pre-expansion device of the flat wire stator expansion device provided in the present application;

[0065] Figure 7 A three-dimensional diagram of the final expansion device of the flat wire stator expansion device provided in the present application;

[0066] Figure 8 It is a partial structural schematic diagram of the final expansion device of the flat wire stator expansion device provided in this application;

[0067] Fig. 9 A schematic diagram of the matching structure of the expansion pressure head, the outer plastic part and the inner plastic part of the final expansion device of the flat wire stator expansion device provided in this application;

[0068] Fig.10 A first stereoscopic view of the expanding pressure head of the flat wire stator expanding device provided in the present application;

[0069] Fig.11 A second stereoscopic view of the expanding pressure head of the flat wire stator expanding device provided in the present application;

[0070] Fig.12a It is a partial schematic diagram of the initial state of the copper wire of the stator to be processed;

[0071] Figure 12b It is a partial schematic diagram of the copper wire pre-expansion processing state of the stator to be processed;

[0072] Fig.12c It is a partial schematic diagram of the final expansion processing state of the copper wire of the stator to be processed;

[0073] In the figure: 100, pre-expansion device; 101, pre-expansion mechanism; 102, pre-expansion drive mechanism; 200, final expansion device; 300, clamping device; 301, clamping drive mechanism; 3011, clamping driver; 302, clamping member; 400, stator to be processed; 401, inner copper wire; 402, middle copper wire; 403, outer copper wire;

[0074] 11. guide plate; 111. sliding part; 112. first limiting groove; 12. movable part; 121. connecting part; 122. toggle part; 13. first fixed column; 21. pre-expansion driver; 22. linkage member; 221. inclined notch; 222. second limiting groove; 31. first driver; 32. pre-expansion fixed frame; 33. pre-expansion movable frame; 41. second driver; 42. third driver; 43. final expansion fixed frame; 431. upper fixed plate; 4311. first avoidance; 432. second fixed column; 433. lower fixed plate; 4331. second avoidance; 44. final expansion movable frame; 451. outer plastic part; 452. inner plastic part; 46. outer connecting column; 47. inner connecting column; 48. expansion pressure head; 481. main body; 482. convex strip; 483. pressing block. DETAILED DESCRIPTION

[0075] The technical solutions of the embodiments of the present application will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, not all of them. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments in the embodiments of the present application are within the scope of protection of the embodiments of the present application.

[0076] In the description of the embodiments of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the embodiments of the present application. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0077] In the description of the embodiments of the present application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a replaceable connection, or an integral connection, it can be a mechanical connection, it can be an electrical connection, it can be a direct connection, it can be indirectly connected through an intermediate medium, and it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the embodiments of the present application can be understood according to specific circumstances.

[0078] The embodiment of the present application discloses a flat wire stator expanding device.

[0079] See also Figure 1 , Figure 2 as well as Figure 4 , an embodiment of the flat wire stator expansion device provided in the embodiments of the present application includes:

[0080] A pre-expansion device 100 and a final expansion device 200 .

[0081] The pre-expansion device 100 includes a pre-expansion driving mechanism 102 and a pre-expansion mechanism 101 .

[0082] The pre-expansion drive mechanism 102 is connected to the pre-expansion mechanism 101; the pre-expansion drive mechanism 102 is used to drive the pre-expansion mechanism 101 to contract to drive the inner copper coin on the stator 400 to be processed to deform, so that the gap between the inner copper wire 401 and the middle copper wire 402 on the stator 400 to be processed increases; the pre-expansion drive mechanism 102 is also used to drive the pre-expansion mechanism 101 to expand to drive the outer copper coin on the stator 400 to be processed to deform, so that the gap between the outer copper wire 403 and the middle copper wire 402 on the stator 400 to be processed increases.

[0083] The final expansion device 200 is used to expand the stator 400 to be processed after being processed by the pre-expansion device 100.

[0084] In the above design, the pre-expansion device 100 is used to pre-expand the stator 400 to be processed, so that the gap between the inner copper wire 401 and the middle copper wire 402 on the stator 400 to be processed is increased, and the gap between the outer copper wire 403 and the middle copper wire 402 on the stator 400 to be processed is increased. That is, a certain gap is formed between the three layers of copper wires, so that the expansion ram 48 on the final expansion device 200 is smoothly inserted between the three layers of copper wires, which is conducive to the expansion part of the expansion ram 48 to cut in, thereby improving the expansion and bending effects and meeting the processing requirements.

[0085] The above is the first embodiment of the flat wire stator expansion device provided in the embodiment of the present application. The following is the second embodiment of the flat wire stator expansion device provided in the embodiment of the present application. For details, please refer to Figures 1 to 11 , Fig.12a , Figure 12b as well as Fig.12c .

[0086] Based on the solution of the above embodiment 1:

[0087] Further, as for the structural design of the pre-expansion mechanism 101, it includes a guide plate 11 and a plurality of movable parts 12. The guide plate 11 is fixedly arranged relative to the pre-expansion driving mechanism 102. The plurality of movable parts 12 are installed on the guide plate 11 based on the circumference of a preset circular track. Each movable part 12 is movably connected to the guide plate 11 along the radial direction of the preset circular track. It can be understood that the plurality of movable parts 12 are distributed in a circumference and are arranged in a reflective movable manner to realize expansion movement or contraction movement.

[0088] The pre-expansion drive mechanism 102 is connected to a plurality of movable parts 12, and is used to drive the inner copper wire 401 on the stator 400 to be processed to deform by driving the plurality of movable parts 12 to contract, so that the gap between the inner copper wire 401 and the middle copper wire 402 on the stator 400 to be processed increases. The pre-expansion drive mechanism 102 is also used to drive the outer copper wire 403 on the stator 400 to be processed to deform by driving the plurality of movable parts 12 to expand, so that the gap between the outer copper wire 403 and the middle copper wire 402 on the stator 400 to be processed increases. That is, Figure 12a to Figure 12b status changes.

[0089] Furthermore, if Figure 5 as well as Figure 6 As shown, with regard to the sliding design of the movable member 12 on the guide plate 11, a plurality of sliding portions 111 are provided on the guide plate 11, and the plurality of movable members 12 are slidably connected to the sliding portions 111 one by one, thereby realizing the movable setting on the guide plate 11.

[0090] Each movable part 12 is provided with a connecting part 121 for connecting with the pre-expansion driving mechanism 102, and a toggle part 122 for contacting with the inner copper wire 401 or the outer copper wire 403. During the pre-expansion process, the toggle part 122 is extended between the inner copper wire 401 and the outer copper wire 403, and is located above the middle copper wire 402. When the contraction movement occurs, the toggle part 122 also contacts with the inner copper wire 401 and drives the inner copper wire 401 to contract and deform, thereby increasing the gap between the inner copper wire 401 and the middle copper wire 402; when the expansion movement occurs, the toggle part 122 also contacts with the outer copper wire 403 and drives the outer copper wire 403 to expand and deform, thereby increasing the gap between the inner copper wire 402 and the middle copper wire 402.

[0091] Furthermore, if Figure 5 as well as Figure 6As shown, the sliding part 111 is provided at the bottom of the guide disk 11, and the guide disk 11 is a disc structure. The sliding part 111 can be specifically a slide groove structure provided along the radial direction of the guide disk 11, provided at the bottom of the guide disk 11, and one end extends out of the outer peripheral surface of the guide disk 11, and the movable part 12 is a structural design that slides with the slide groove structure, and one end extends out of the outer peripheral surface of the guide disk 11, and the specific details are not repeated. As for the setting of the toggle part 122, it can be provided at one end of the movable part 12 extending out of the outer peripheral surface of the guide disk 11, and is a block structure, with a contact surface of a certain size that can contact the inner copper wire 401 or the outer copper wire 403. The slide groove structure design can realize embedded sliding cooperation, and the overall structure is more compact. Moreover, setting the sliding part 111 at the bottom of the guide disk 11 is also convenient for the subsequent setting of the first limit groove 112.

[0092] A plurality of first limiting grooves 112 are provided on the top of the guide plate 11, into which the connecting portions 121 on the movable member 12 extend one by one, and the first limiting grooves 112 are used to limit the movable displacement of the movable member 12 on the guide plate 11. By providing the first limiting grooves 112, not only can the connecting portions 121 be extended to facilitate connection with the pre-expansion driving mechanism 102, but also the movable limiting of the movable member 12 can be achieved by limiting the movable position of the connecting portions 121, and at the same time, the movable movement of the movable member 12 can be further guided, so that the movable movement of the movable member 12 is more stable.

[0093] Furthermore, if Figure 5 as well as Figure 6 As shown, the design of the pre-expansion drive mechanism 102 includes a pre-expansion driver 21 and a linkage member 22. The pre-expansion driver 21 is connected to each connection part 121 through the linkage member 22, and is used to drive the multiple connection parts 121 to contract or expand.

[0094] Furthermore, if Figure 5 as well as Figure 6 As shown, taking the design of realizing the contraction or expansion movement of each movable part 12 by rotation control as an example, the linkage part 22 can be arranged above the guide plate 11, and a plurality of inclined slots 221 corresponding to each other are provided for the connection part 121 to extend into, and the inclined slots 221 can be inclined straight slots or inclined arc slots. The pre-expansion driver 21 is a rotating motor that can rotate forward and reverse, and its driving end is connected to the linkage part 22, and is used to drive the linkage part 22 to rotate, so as to drive each connection part 121 to contract or expand.

[0095] The linkage member 22 is a disc structure with a plurality of inclined slots 221 evenly distributed on its circumference. When the inclined slots 221 are arranged with a certain inclination angle, when the linkage member 22 is driven to rotate, the connecting portion 121 extending into the inclined slots 221 can move in the inclined slots 221, thereby causing each movable member 12 to contract or expand.

[0096] Of course, in addition to the rotation control method, a telescopic control method can be used, that is, the pre-expansion driver 21 can be a telescopic motor, and the linkage member 22 can be composed of multiple connecting rods, one end of each connecting rod is hinged to the connecting part 121 in a one-to-one correspondence, and the other end is hinged to the telescopic end of the pre-expansion driver 21, so that when the telescopic end of the pre-expansion driver 21 moves, each connecting rod can be used to drive each connecting part 121 to move, thereby realizing the contraction or expansion movement of each movable member 12. Of course, for the sake of compact structure and convenience of use, the rotation control method provided by this application is preferred.

[0097] Furthermore, if Figure 5 As shown, in order to facilitate the installation and fixation of the guide plate 11, a first fixing column 13 is fixed on the guide plate 11. At the same time, a second limiting groove 222 for the first fixing column 13 to pass through can be provided on the linkage member 22 to limit the rotation angle of the linkage member 22. The second limiting groove 222 is used to cooperate with the first fixing column 13 to limit the rotation angle of the linkage member 22, so as to improve reliability.

[0098] Furthermore, if Figure 3 As shown, in order to facilitate the installation, fixation and use of the pre-expansion device 100 , the pre-expansion mechanism 101 further includes a pre-expansion fixed frame 32 , a pre-expansion movable frame 33 and a first driver 31 .

[0099] The first driver 31 is installed on the pre-expansion fixed frame 32 and connected to the pre-expansion movable frame 33 to drive the pre-expansion movable frame 33 to move up and down. The pre-expansion driving mechanism 102 is installed on the pre-expansion movable frame 33, and the guide plate 11 is fixedly connected to the pre-expansion movable frame 33.

[0100] Before the pre-expansion process, the pre-expansion movable frame 33 is driven to move downward by the first driver 31 until the toggle portion 122 on the movable member 12 extends between the inner copper wire 401 and the outer copper wire 403, and then the pre-expansion driver 21 drives each movable member 12 to perform a contraction movement or an expansion movement.

[0101] The pre-expansion fixed frame 32 can be a plate structure with reinforcing ribs and can be installed on the final expansion device 200, and the pre-expansion movable frame 33 can also be a plate structure. The guide plate 11 can be fixedly connected to the bottom of the pre-expansion movable frame 33 through the first fixed column 13, thereby achieving a fixed setting relative to the pre-expansion driving mechanism 102.

[0102] Furthermore, if Figures 7 to 9 As shown, the final expansion device 200 is designed to include a second driver 41 , a third driver 42 , a shaping press head and an expanding press head 48 .

[0103] The shaping head includes an inner shaping piece 452 and an outer shaping piece 451 . The outer shaping piece 451 is arranged on the outer periphery of the inner shaping piece 452 at the same height, and an annular gap is formed between the outer shaping piece 451 and the inner shaping piece 452 for all copper wires on the stator 400 to be processed to pass through.

[0104] The second driver 41 is connected to the third driver 42 and the shaping press head, and is used to drive the third driver 42 and the shaping press head to move up and down together.

[0105] The expanding press head 48 is movably arranged on the inner plastic part 452, and has a expanding portion that is movably extended between the inner copper wire 401 and the middle copper wire 402 and between the outer copper wire 403 and the middle copper wire 402; it can be understood that the expanding portion is an annular structure, and the inner plastic part 452 can be movably extended into the expanding portion to achieve active cooperation with the expanding press head 48, so that they will not interfere with each other.

[0106] The third driver 42 is used to drive the expansion head 48 to move, so as to drive the expansion part to press against the inner copper wire 401, so that the inner copper wire 401 is deformed until its outer wall fits the outer circumference of the inner plastic part 452; the third driver 42 is also used to drive the expansion head 48 to move, so as to drive the expansion part to synchronously press against the outer copper wire 403, so that the outer copper wire 403 is deformed until its outer wall fits the inner circumference of the outer plastic part 451.

[0107] The use process is as follows: first, the second driver 41 drives the final expansion movable frame 44 to descend a certain height until the inner plastic part 452 is located at the root of the inner copper wire 401, and the outer plastic part 451 is located at the root of the outer copper wire 403, and then the third driver 42 drives the expansion pressure head 48 to press down until the inner copper wire 401 is deformed to the outer wall of itself to fit the outer circumference of the inner plastic part 452, and at the same time, the outer copper wire 403 is deformed to the outer wall of itself to fit the inner circumference of the outer plastic part 451, and finally the following is formed. Fig.12c Status shown.

[0108] As for the structural design of the expansion pressure head 48, Fig.10 as well as Fig.11As shown, it includes a main body 481, and a plurality of convex strips 482 are provided on the circumference of one side of the main body 481. A copper wire avoidance gap is formed between adjacent convex strips 482 for a copper wire unit group to extend into. Here, a copper wire unit group is a combination of a copper wire unit of the outer copper wire 403, a copper wire unit of the middle copper wire 402, and a copper wire unit of the outer copper wire 403. Each copper wire avoidance gap is provided with two pressing blocks 483 connected to adjacent convex strips 482 at a position away from the main body 481, that is, at the entrance. The two pressing blocks 483 divide the entrance of the copper wire avoidance gap into three sub-entrances. The inner sub-entrance is for a copper wire unit of the inner copper wire 401 to extend into, the middle sub-entrance is for a copper wire unit of the middle copper wire 402 to extend into, and the outer sub-entrance is for a copper wire unit of the outer copper wire 403 to extend into. The convex strip 482 and the pressing block 483 also constitute the above-mentioned expanding part. When expanding, the head of the pressing block 483 located on the inner side contacts the side wall of a copper wire unit of the inner copper wire 401. When pressed down to a certain position, the root of the copper wire unit is bent and deformed by the limiting effect of the inner plastic part 452 until the deformed part fits the side wall of the pressing block 483 and the inner ring surface of the inner plastic part 452 respectively to form a Fig.12c The copper wire units of the outer copper wire 403 are expanded synchronously, and the expansion principle is the same as above and will not be described in detail. In addition, the edge of the end of the convex strip 482 away from the main body 481 and the edge of the end of the pressing block 483 away from the main body 481 can be chamfered; this chamfering design can assist in the alignment of the copper wires and achieve the position calibration for the copper wires with deviations in position.

[0109] Furthermore, if Figure 7 As shown, in order to facilitate installation and connection, the inner plastic part 452 is provided with an inner connection column 47 that movably passes through the expanding pressure head 48, and the outer plastic part 451 is provided with an outer connection column 46. At the same time, the movable cooperation between the inner connection column 47 and the expanding pressure head 48 can also guide the movement of the expanding pressure head 48, thereby improving the movement reliability of the expanding pressure head 48.

[0110] Furthermore, if Figure 7 As shown, the final expansion device 200 further includes a final expansion fixed frame 43 and a final expansion movable frame 44 .

[0111] The second driver 41 is a telescopic motor, which is installed on the final expansion fixed frame 43, and its telescopic end is connected to the final expansion movable frame 44, driving the final expansion movable frame 44 to move up and down. The inner plastic part 452 is fixedly connected to the final expansion movable frame 44 through the inner connecting column 47; the outer plastic part 451 is fixedly connected to the final expansion movable frame 44 through the outer connecting column 46.

[0112] The third driver 42 is also a telescopic motor, which is installed on the final expansion movable frame 44, and the telescopic end can contact the expansion head 48 to drive the expansion head 48 to move downward. The expansion head 48 can contact the inner plastic part 452 to move upward along with the inner plastic part 452. In this embodiment, the connection between the third driver 42 and the expansion head 48 is designed as a separate connection. Therefore, the expansion head 48 also requires the inner plastic part 452 to have a certain contact effect so that it can move upward along with the inner plastic part 452. When the inner plastic part 452 rises, it contacts the main body 481 of the expansion head 48 and drives the expansion head 48 to move upward together, so that the expansion head 48 withdraws from the copper wire of the stator 400 to be processed. Based on this design, when the final expansion process is performed, the expansion head 48 naturally falls with the shaping head, and the expansion head 48 falls between the inner copper wire 401 and the middle copper wire 402 and the outer copper wire 403 and the middle copper wire 402, and stays at a certain height due to the friction force, while the shaping head moves down to the specified height normally. Then the third driver 42 is driven to make its telescopic end extend downward to drive the expansion head 48 to move downward to complete the final expansion. After completion, the telescopic end of the third driver 42 retracts, and then the second driver 41 drives the final expansion movable frame 44 to rise, so as to take the shaping head and the expansion head 48 away from the stator 400 to be processed.

[0113] Furthermore, if Figure 7 As shown, the final expansion fixing frame 43 is designed to include a lower fixing plate 433 , an upper fixing plate 431 and a plurality of second fixing columns 432 .

[0114] The lower fixed plate 433 is arranged parallel to the upper fixed plate 431 and spaced apart; a plurality of second fixed columns 432 are connected between the upper fixed plate 431 and the lower fixed plate 433; the final expansion movable frame 44 is movably installed between the upper fixed plate 431 and the lower fixed plate 433, and is provided with a plurality of guide holes (not shown in the figure) corresponding to each other for the second fixed columns 432 to movably pass through; the second driver 41 is installed on the upper fixed plate 431, and the driving end is connected to the final expansion movable frame 44. The final expansion movable frame 44 can be a plate structure, which can realize stable up and down movement by sliding cooperation with the second fixed column 432. The upper fixed plate 431 is provided with a first avoidance opening 4311 for avoiding the third driver 42, and the lower fixed plate 433 is provided with a second avoidance opening 4331 for avoiding the shaping pressure head.

[0115] Furthermore, a tray (not shown) for locating the center and angle of the stator 400 to be processed is also included, so as to facilitate the positioning of the stator 400 to be processed and improve the processing accuracy.

[0116] Furthermore, if Figure 1 as well as Figure 2As shown, it also includes a clamping device 300, which is arranged below the final expansion device 200 and is used to clamp and fix the stator 400 to be processed to prevent the stator 400 to be processed from shifting during the processing and affecting the expansion effect.

[0117] Furthermore, if Figure 2 As shown, the clamping device 300 includes a clamping drive mechanism 301 and two clamping members 302 .

[0118] The clamping drive mechanism 301 is connected to at least one clamping member 302 and is used to drive the connected clamping member 302 to move, so that the two clamping members 302 clamp and fix the stator 400 to be processed.

[0119] Specifically, the clamping drive mechanism 301 includes one clamping drive 3011 or two clamping drives 3011. One clamping drive 3011 can drive two clamping members 302 to move together, or two clamping drives 3011 can each drive one clamping member 302. Of course, one clamping drive can also drive one clamping member 302 to move, while the other clamping member 302 is fixed. There is no specific limitation. In addition, the clamping drive 3011 can be a telescopic motor, and the clamping member 302 can be a semicircular structure with a radius consistent with the radius of the stator 400 to be processed.

[0120] The above is a detailed introduction to the flat wire stator expanding device provided in the present application. For those skilled in the art, according to the concept of the embodiments of the present application, there may be changes in the specific implementation method and application scope. In summary, the content of this specification should not be understood as limiting the present application.

Claims

1. Flat wire stator expansion device, characterized in that: It comprises a pre-expansion device (100) and a final expansion device (200); The pre-expansion device (100) comprises a pre-expansion driving mechanism (102) and a pre-expansion mechanism (101); The pre-expansion driving mechanism (102) is connected to the pre-expansion mechanism (101); The pre-expansion drive mechanism (102) is used to drive the pre-expansion mechanism (101) to contract so as to drive the inner copper wire (401) on the stator (400) to be processed to deform, thereby increasing the gap between the inner copper wire (401) and the middle copper wire (402) on the stator (400) to be processed; The pre-expansion drive mechanism (102) is also used to drive the pre-expansion mechanism (101) to expand so as to drive the outer copper wire (403) on the stator (400) to be processed to deform, thereby increasing the gap between the outer copper wire (403) and the middle copper wire (402) on the stator (400) to be processed; The final expansion device (200) is used to expand the stator (400) to be processed after being processed by the pre-expansion device (100); The pre-expansion mechanism (101) comprises a guide plate (11) and a plurality of movable parts (12); The guide plate (11) is fixedly arranged relative to the pre-expansion driving mechanism (102); The plurality of movable parts (12) are mounted on the guide plate (11) based on a preset circular trajectory circumference; Each of the movable parts (12) is movably connected to the guide plate (11) along a radial direction of a preset circular trajectory; The pre-expansion drive mechanism (102) is connected to the plurality of movable parts (12) and is used to drive the plurality of movable parts (12) to contract to drive the inner copper wire (401) on the stator (400) to be processed to deform, thereby increasing the gap between the inner copper wire (401) and the middle copper wire (402) on the stator (400) to be processed; The pre-expansion drive mechanism (102) is also used to drive the plurality of movable parts (12) to expand to drive the outer copper wire (403) on the stator (400) to be processed to deform, thereby increasing the gap between the outer copper wire (403) and the middle copper wire (402) on the stator (400) to be processed.

2. The flat wire stator expansion device according to claim 1, characterized in that: The guide plate (11) is provided with a plurality of sliding parts (111); The plurality of movable parts (12) are slidably connected to the sliding part (111) in a one-to-one correspondence; Each movable part (12) is provided with a connecting portion (121) connected to the pre-expansion driving mechanism (102), and a shifting portion (122) in contact with the inner copper wire (401) or the outer copper wire (403).

3. The flat wire stator expansion device according to claim 2, characterized in that: The sliding portion (111) is disposed at the bottom of the guide plate (11); The top of the guide plate (11) is provided with a plurality of first limiting grooves (112) into which the connecting parts (121) on the movable member (12) extend one by one; The first limiting groove (112) is used to limit the movable displacement of the movable part (12) on the guide plate (11).

4. The flat wire stator expansion device according to claim 3, characterized in that: The pre-expansion driving mechanism (102) comprises a pre-expansion driver (21) and a linkage member (22); The pre-expansion driver (21) is connected to each of the connecting parts (121) via the linkage member (22), and is used to drive the multiple connecting parts (121) to perform contraction or expansion movements.

5. The flat wire stator expansion device according to claim 4, characterized in that: The linkage member (22) is arranged above the guide plate (11) and is provided with a plurality of inclined slots (221) corresponding to each other and into which the connecting portion (121) extends; The driving end of the pre-expansion driver (21) is connected to the linkage member (22) and is used to drive the linkage member (22) to rotate, thereby driving each of the connecting parts (121) to perform a contraction movement or an expansion movement.

6. The flat wire stator expansion device according to claim 5, characterized in that: A first fixing column (13) is fixed on the guide plate (11); The linkage member (22) is provided with a second limiting groove (222) for the first fixing column (13) to pass through, and is used to limit the rotation angle of the linkage member (22).

7. The flat wire stator expansion device according to claim 1, characterized in that: The pre-expansion mechanism (101) further comprises a pre-expansion fixed frame (32), a pre-expansion movable frame (33) and a first driver (31); The first driver (31) is installed on the pre-expansion fixed frame (32) and connected to the pre-expansion movable frame (33) to drive the pre-expansion movable frame (33) to move up and down; The pre-expansion driving mechanism (102) is installed on the pre-expansion movable frame (33); The guide plate (11) is fixedly connected to the pre-expansion movable frame (33).

8. The flat wire stator expansion device according to claim 1, characterized in that: The final expansion device (200) comprises a second driver (41), a third driver (42), a shaping pressure head and an expanding pressure head (48); The shaping press head comprises an inner shaping part (452) and an outer shaping part (451); The outer plastic part (451) is arranged around the outer periphery of the inner plastic part (452), and an annular gap is formed between the outer plastic part (451) and the inner plastic part (452) for all copper wires on the stator (400) to be processed to pass through. The second driver (41) is connected to the third driver (42) and the shaping press head, and is used to drive the third driver (42) and the shaping press head to move upward and downward together; The expansion pressure head (48) is movably arranged on the inner plastic part (452), and has an expansion portion that movably extends between the inner copper wire (401) and the middle copper wire (402) and between the outer copper wire (403) and the middle copper wire (402); The third driver (42) is used to drive the expansion pressure head (48) to move, so as to drive the expansion part to press against the inner copper wire (401), so that the inner copper wire (401) is deformed until its outer wall fits the outer peripheral surface of the inner plastic part (452); The third driver (42) is also used to drive the expansion pressure head (48) to move, so as to drive the expansion part to synchronously press against the outer copper wire (403), so that the outer copper wire (403) is deformed until its outer wall fits the inner circumference of the outer plastic part (451).

9. The flat wire stator expansion device according to claim 8, characterized in that: The inner plastic part (452) is provided with an inner connecting column (47) which movably passes through the expanding pressure head (48); The outer plastic part (451) is provided with an outer connecting column (46).

10. The flat wire stator expansion device according to claim 9, characterized in that: The final expansion device (200) further comprises a final expansion fixed frame (43) and a final expansion movable frame (44); The second driver (41) is mounted on the final expansion fixed frame (43) and connected to the final expansion movable frame (44); The inner plastic part (452) is fixedly connected to the final expansion movable frame (44) via the inner connecting column (47); The outer plastic part (451) is fixedly connected to the final expansion movable frame (44) via the outer connecting column (46); The third driver (42) is mounted on the final expansion movable frame (44), and the telescopic end can contact the expansion pressure head (48); The expansion pressure head (48) can contact the inner plastic part (452) to move upward along with the inner plastic part (452).

11. The flat wire stator expansion device according to claim 10, characterized in that: The final expansion fixing frame (43) comprises a lower fixing plate (433), an upper fixing plate (431) and a plurality of second fixing columns (432); The lower fixing plate (433) and the upper fixing plate (431) are arranged in parallel and spaced apart from each other; A plurality of the second fixing columns (432) are connected between the upper fixing plate (431) and the lower fixing plate (433); The final expansion movable frame (44) is movably mounted between the upper fixed plate (431) and the lower fixed plate (433), and is provided with a plurality of guide holes corresponding to each other for the second fixed columns (432) to movably pass through; The second driver (41) is mounted on the upper fixed plate (431), and a driving end is connected to the final expansion movable frame (44).

12. The flat wire stator expansion device according to claim 1, characterized in that: Also included is a tray for positioning the center and angle of the stator (400) to be processed.

13. The flat wire stator expansion device according to claim 1, characterized in that: Also includes a clamping device (300); The clamping device (300) is used to clamp and fix the stator (400) to be processed.

14. The flat wire stator expansion device according to claim 13, characterized in that: The clamping device (300) comprises a clamping drive mechanism (301) and two clamping members (302); The clamping drive mechanism (301) is connected to at least one of the clamping members (302) and is used to drive the connected clamping member (302) to move, so that the two clamping members (302) clamp and fix the stator (400) to be processed.

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