Flat wire motor flaring protection mechanism and flat wire motor flaring equipment

Abstract

The utility model provides a flat wire motor flaring protection mechanism and flat wire motor flaring equipment, the flat wire motor flaring protection mechanism comprises an inner positioning mechanism, the inner positioning mechanism comprises a first driving device, an inner support positioning piece and an inner paper protection block, the first driving device is in transmission connection with the inner support positioning piece and can drive the inner support positioning piece to move along the radial direction, and the inner paper protection block is arranged on the inner support positioning piece. The inner support positioning piece is arranged on the stator, so that the inner support positioning piece abuts against the inner surface of the stator through radial movement so as to position the inner support of the stator, and the inner paper protection block is arranged on the inner support positioning piece and can radially move along with the inner support positioning piece so as to abut against a wire of the inner ring of the stator, so that the wire is bent along the inner paper protection block; the inner supporting positioning piece can move in the radial direction relative to the inner surface of the stator so as to abut against the inner surface of the stator, the stator is stably supported, wires on the inner ring of the stator can abut against the inner paper protection block, direct contact and friction between the wires and groove paper in the flaring process can be effectively reduced, and the flaring efficiency is improved. The groove paper is effectively protected, and the flaring and bending consistency is ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of flat wire motor production, and mainly relates to a flat wire motor expansion protection mechanism and a flat wire motor expansion device. Background Art

[0002] As an important component of the flat wire motor, the quality of the flat wire stator will directly affect the product quality and service life of the flat wire motor. The slot paper is installed in the motor core slot to protect the insulation layer between the electric coil and the core. Its function is to reduce the energy consumption of the motor when it is working and avoid short circuit between the motor winding and the core, thereby extending the service life of the motor. The inner paper guard in the prior art generally uses a disc to enter the paper guard tangentially, press against the paper guard, or enter the paper guard along the chamfer, press against the paper guard. The above-mentioned method of entering the paper guard is easy to damage the slot paper and even destroy the copper wire coating. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the purpose of the utility model is to provide a flat wire motor expansion protection mechanism and a flat wire motor expansion device, which can effectively protect the slot paper and ensure the consistency of the expansion and bending, thereby improving the product qualification rate.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The first aspect of the utility model provides a flat wire motor expansion protection mechanism, comprising:

[0006] An inner positioning mechanism, the inner positioning mechanism includes a first driving device, an inner support positioning member and an inner paper protection block, the first driving device is in transmission connection with the inner support positioning member, and can drive the inner support positioning member to move radially, so that the inner support positioning member abuts against the inner surface of the stator through radial movement to position the stator inner support, wherein the inner paper protection block is arranged on the inner support positioning member, and can move radially with the inner support positioning member to abut against the wire of the inner ring of the stator, so that the wire is bent along the inner paper protection block.

[0007] In an exemplary embodiment disclosed in the present utility model, the number of the inner support positioning members is more than two, and the inner support positioning members are arranged along the circumferential direction, and the inner paper protection block is arranged on each of the inner support positioning members.

[0008] In an exemplary embodiment disclosed in the present utility model, two or more inner paper protection blocks are arranged at intervals along the circumferential direction;

[0009] When the inner support positioning member abuts against the inner surface of the stator to position the stator inner support, a preset gap is formed between the circumferentially adjacent inner paper protection blocks, and the preset gap is less than or equal to the spacing between the circumferentially adjacent wires of the stator inner ring.

[0010] In an exemplary embodiment disclosed in the utility model, the inner paper protection block is provided with an arc-shaped abutting edge, and the inner paper protection block is used to make the abutting edge contact the stator inner ring through radial movement to abut against the wire of the stator inner ring.

[0011] In an exemplary embodiment disclosed in the present utility model, a buffer member is provided on the inner support positioning member, and the buffer member is provided at a position of the inner support positioning member for abutting against an inner surface of the stator.

[0012] In an exemplary embodiment disclosed in the present utility model, the inner positioning mechanism further includes a support member, which is disposed on the inner support positioning member. The support member can move radially along with the inner support positioning member, and the support member is used to abut against the bottom of the stator to support the stator.

[0013] In an exemplary embodiment disclosed in the present utility model, it also includes more than two outer paper guard blocks and a second driving device, and the outer paper guard blocks are arranged in a circumferential direction. The second driving device is transmission-connected to at least one of the outer paper guard blocks and drives at least one of the outer paper guard blocks to move radially. The outer paper guard blocks are pressed against the wire of the stator outer ring through radial movement so that the wire is bent along the outer paper guard blocks.

[0014] In an exemplary embodiment disclosed in the present utility model, a limiting mechanism is further included, wherein the limiting mechanism is used to abut against the outer paper protection block to limit the radial outward movement of the outer paper protection block.

[0015] In an exemplary embodiment disclosed in the present utility model, the limiting mechanism includes a third driving device and a pressure block, the third driving device is transmission-connected to the pressure block, and the third driving device can drive the pressure block to move against the radial outer side of the outer paper protection block to limit the radial outward movement of the outer paper protection block.

[0016] In an exemplary embodiment disclosed in the present utility model, the pressing block is provided with a limiting inclined surface, and the limiting inclined surface is configured to abut against the outer paper protection block as the pressing block moves.

[0017] In an exemplary embodiment disclosed in the utility model, a positioning piece is provided on the outer paper guard block, and the positioning piece is located between the pressing block and the outer paper guard block. When the pressing block is located at a position that limits the radial outward movement of the outer paper guard block, two ends of the positioning piece are pressed tightly between the pressing block and the outer paper guard block.

[0018] A sensor is also included. When the two ends of the positioning member are pressed tightly between the pressing block and the outer paper protection block, the sensor can send a signal to respond.

[0019] In an exemplary embodiment disclosed in the utility model, it also includes a base, the base is provided with a mounting groove, and a plurality of outer paper protection blocks are arranged circumferentially along the mounting groove;

[0020] The limiting mechanism also includes a pressure ring, which is installed in the installation groove. The pressure ring is connected to the pressure block and is transmission-connected to the third driving device. The third driving device drives the pressure ring to rotate along the installation groove to drive the pressure block to move to the radially outer side of the outer paper protection block.

[0021] In an exemplary embodiment disclosed in the present utility model, the limiting mechanism also includes a slewing bearing and a connecting rod, the slewing bearing is nested in the inner surface of the mounting groove, the connecting rod is rotatably connected between the slewing bearing and the third driving device, the slewing bearing is connected to the pressure ring, and under the drive of the third driving device, the slewing bearing can rotate relative to the mounting groove to drive the pressure ring and the pressure block to move.

[0022] In an exemplary embodiment disclosed in the utility model, it also includes a column, which is nested in the inner side of the installation groove. The inner support positioning member is arranged on the column and can move radially relative to the column to reach and abut against the inner surface of the stator.

[0023] The second aspect of the utility model provides a flat wire motor expanding device, which is used to expand the stator of the flat wire motor, comprising:

[0024] An expansion wire pulling mechanism, used for expanding the stator;

[0025] The flat wire motor expansion protection mechanism as described in any of the above embodiments is used to place the stator to be expanded.

[0026] Beneficial effects:

[0027] The inner support positioning member is driven by the first driving device to move radially relative to the inner surface of the stator to abut against the inner surface of the stator, thereby providing stable support for the stator and avoiding wear of the slot paper and the wire due to displacement caused by force during the subsequent expansion process; moreover, by setting the inner paper protection block on the inner support positioning member and moving with the inner support positioning member, it is avoided that there is a need to set a separate driving device for the inner paper protection block. In the process of abutting against the inner surface of the stator with the radial movement of the inner support positioning member to provide limited support for the stator, the inner paper protection block also moves radially relative to the inner surface of the stator and finally abuts against the wire, so that the wire of the inner ring of the stator is in a state of more uniform force; further, because the wire abuts against the inner paper protection block, the inner paper protection block can guide the wire to bend along its surface, thereby effectively reducing the direct contact and friction between the wire and the slot paper, so that the slot paper will not be damaged, the slot paper is effectively protected and the consistency of the expansion and bending is ensured, thereby improving the product qualification rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of a flat wire motor expansion protection mechanism according to an embodiment of the present application;

[0029] Figure 2 is a schematic diagram of an inner positioning mechanism of an embodiment of the present application;

[0030] Figure 3 is a schematic three-dimensional diagram of the connection between the outer paper protection block and the limiting mechanism of an embodiment of the present application;

[0031] Figure 4 is a schematic top view of the connection between the outer paper protection block and the limiting mechanism of one embodiment of the present application;

[0032] Figure 5 yes Figure 4 A local enlarged view of point A;

[0033] Figure 6 yes Figure 4 The cross-sectional view at AA of ;

[0034] The corresponding relationship between the reference numerals and the component names is as follows:

[0035] 1 inner positioning mechanism, 101 abutting edge, 11 first driving device, 12 inner supporting positioning member, 13 inner paper protection block, 14 buffer member;

[0036] 2 outer paper blocks;

[0037] 3. Second driving device;

[0038] 4 limiting mechanism, 401 limiting inclined surface, 41 third driving device, 42 pressing block, 43 pressing ring, 44 slewing bearing, 45 connecting rod, 46 positioning member;

[0039] 5 base, 501 mounting slot;

[0040] 6 columns;

[0041] 7 sensors. DETAILED DESCRIPTION

[0042] The utility model provides a flat wire motor expansion protection mechanism and a flat wire motor expansion device. In order to make the purpose, technical solution and effect of the utility model clearer and more specific, the utility model is further described in detail with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the protection scope of the utility model.

[0043] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "inside", "outside", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0044] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or mutual communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0045] See attached Figure 1 An embodiment of one aspect of the utility model discloses a flat wire motor expansion protection mechanism, including an inner positioning mechanism 1, wherein the inner positioning mechanism 1 includes a first driving device 11, an inner support positioning member 12 and an inner paper protection block 13.

[0046] The inner positioning mechanism 1 includes a first driving device 11, an inner support positioning member 12 and an inner paper protection block 13. The first driving device 11 is in transmission connection with the inner support positioning member 12, and can drive the inner support positioning member 12 to move radially, so that the inner support positioning member 12 moves radially against the inner surface of the stator to position the stator inner support. In this way, the inner support positioning member 12 is driven by the first driving device 11 to move radially relative to the inner surface of the stator to abut against the inner surface of the stator, thereby ensuring that the inner support positioning member 12 can be tightly against the inner surface of the stator, thereby achieving stable support for the stator. The positioning effect of the inner support positioning member 12 on the stator is conducive to improving the processing accuracy and also ensures the stability of the expansion process.

[0047] Among them, the inner paper protection block 13 is arranged on the inner support positioning member 12, and can move radially with the inner support positioning member 12 to abut against the wire of the inner ring of the stator, so that the wire is bent along the inner paper protection block 13. On the one hand, the inner paper protection block 13 moves with the inner support positioning member 12 because it is arranged on the inner support positioning member 12, avoiding the need to set a separate driving device for the inner paper protection block 13. In the process of abutting against the inner surface of the stator to provide limited support for the stator with the radial movement of the inner support positioning member 12, the inner paper protection block 13 also moves radially relative to the inner surface of the stator and finally abuts against the wire, so that the wire of the inner ring of the stator is in a state of more uniform force, avoiding damage to the stator slot paper or even the wire in the process of entering the paper protection along the tangent direction or along the chamfer. When it is necessary to expand the wire of the inner ring of the stator inwardly, since the wire is against the inner paper protection block 13, the inner paper protection block 13 can guide the wire to bend along its surface, effectively reducing the direct contact and friction between the wire and the slot paper, thereby avoiding the interaction force between the wire and the slot paper and scratching the slot paper during the internal expansion process. The internal positioning mechanism 1 of the present application has a simple structure, which not only improves the processing accuracy, but also ensures the stability of the expansion process, is beneficial to protecting the consistency of subsequent expansion, and is highly efficient.

[0048] It can be understood that the first driving device 11 is in transmission connection with at least one inner support positioning member 12, and drives at least one inner support positioning member 12 to move radially. For example, one of the inner support positioning members 12 is stationary, and the remaining inner support positioning members 12 are driven by the first driving device 11 to move radially to the inner surface of the stator, which can also achieve support and positioning of the inner surface of the stator.

[0049] For example, the inner support positioning member 12 is correspondingly driven by a first driving device 11 .

[0050] In some embodiments, the number of the aforementioned inner support positioning members 12 is more than two, and the inner support positioning members 12 are arranged circumferentially, and each inner support positioning member 12 is provided with an inner paper protection block 13. By arranging multiple inner support positioning members 12 in the circumferential direction, more uniform and comprehensive support and positioning of the inner surface of the stator can be achieved, which can not only improve the stability of the expansion process, but also ensure that the stator is uniformly stressed during the internal expansion process, avoiding damage or deformation caused by excessive local stress.

[0051] Furthermore, since each inner support positioning member 12 is provided with an inner paper protection block 13, the inner paper protection block 13 can more evenly cover more wire areas of the inner ring of the stator, not only achieving more even and comprehensive support and positioning of the inner surface of the stator, but also covering more wire areas of the inner ring of the stator at one time. In the process of expanding, more wires can be effectively protected and guided, reducing the friction and damage risk between the wires and the slot paper, so that more wire areas can be processed simultaneously in a single expansion process, improving production efficiency, and reducing the increase in production time and cost caused by multiple operations, as well as the wear of the slot paper and wires caused by multiple operations.

[0052] For example, as attached Figure 2 As shown, three inner support positioning members 12 are arranged in an axial direction. Similarly, three inner paper protection blocks 13 are respectively arranged on the inner support positioning members 12 .

[0053] The inner support positioning member 12 can also be configured as a long strip positioning member with an axial length, so that the inner support positioning member 12 can also support the inner surface of the stator along the axial direction of the inner surface of the stator, and can achieve a more stable and reliable positioning and supporting effect for the stator during the inner expansion process.

[0054] In some embodiments, more than two inner paper protection blocks 13 are arranged at intervals along the circumferential direction, so that the wires of the inner ring of the stator can be evenly supported and protected. When the inner support positioning member 12 is against the inner surface of the stator to position the stator inner support, a preset gap is formed between circumferentially adjacent inner paper protection blocks 13, and the preset gap is less than or equal to the spacing between circumferentially adjacent wires of the inner ring of the stator.

[0055] Specifically, due to the movement characteristics of the inner paper protection blocks 13 being arranged at circumferential intervals and extending radially, when the inner paper protection blocks 13 are arranged at the same horizontal height, there must be gaps between adjacent inner paper protection blocks 13. When the inner paper protection blocks 13 move radially with the inner support positioning members 12 to abut against the circumference of the inner ring of the stator, at this time, the preset gap between radially adjacent inner paper protection blocks 13 is smaller than the spacing between adjacent wires of the inner ring of the stator, so that all wires on the inner surface of the stator can be abutted at the same time.

[0056] For example, the inner paper protection block 13 can also be arranged in a staggered manner in height, so that the wires on the inner surface of the stator can be completely supported.

[0057] Furthermore, the inner paper protection block 13 is provided with an arc-shaped abutting edge 101, and the inner paper protection block 13 is used to make the abutting edge 101 contact the inner ring of the stator to abut the wire of the inner ring of the stator through radial movement. Specifically, the arc-shaped abutting edge 101 is provided on the circumferential surface of the inner paper protection block 13, which can better fit the curvature of the inner ring of the stator, so that the inner paper protection block 13 can distribute the pressure more evenly when contacting the inner ring of the stator, reduce the phenomenon of local stress concentration, so that during the expansion process, the wire arranged along the circumference of the inner ring of the stator can be more evenly stressed on the inner paper protection, reduce the possibility of damaging the copper wire coating, and the slot paper of the stator can also be effectively protected; and it can also increase the contact area between the inner paper protection block 13 and the inner ring of the stator, thereby improving the stability of support and protection.

[0058] In some embodiments, a buffer 14 is provided on the inner support positioning member 12, and the buffer 14 is provided at the position where the inner support positioning member 12 is used to abut against the inner surface of the stator. In this way, the provision of the buffer 14 can significantly reduce the direct contact between the inner support positioning member 12 and the inner surface of the stator, thereby reducing the friction and impact that may occur during the expansion process, helping to protect the integrity of the inner surface of the stator, and avoiding scratches or damage to the slot paper and copper wire during the expansion process. On the other hand, the buffer 14 can effectively absorb the vibration and impact force generated during the expansion process. It can effectively reduce the vibration and noise of the machine, improve the comfort of the working environment, and avoid wear on the inner positioning mechanism 1 during the subsequent expansion process.

[0059] Optionally, the buffer member 14 may be an elastic silicone member, and the elastic silicone member is arranged on the circumferential side wall of the inner support positioning member 12 facing the inner surface of the stator.

[0060] In some embodiments, the support member is arranged on the inner support positioning member 12, and the support member can move radially with the inner support positioning member 12, and the support member is used to abut against the bottom of the stator to support the stator. In the process of expanding, the stator may undergo a slight change in shape or position. The support member can move radially with the inner support positioning member 12. When the inner support positioning member 12 reaches the position of abutting against the stator support, the support member abuts against the bottom of the stator, thereby supporting the bottom of the stator, preventing the stator from moving or shaking during the expansion process, ensuring the accuracy and reliability of the expansion operation, and reducing the additional adjustments required due to the movement of the stator during the expansion process, thereby improving production efficiency.

[0061] Specifically, each inner support positioning member 12 is correspondingly provided with a supporting member, so that when the inner support positioning member 12 moves radially to a position, the plurality of supporting members can form a supporting surface for the end surface of one end of the stator.

[0062] Furthermore, as attached Figure 2As shown, the support member and the inner paper protection block 13 are both arranged on one end of the inner support positioning member 12 close to the bottom. The support member can support the bottom of the stator, and the inner paper protection block 13 can also support the wire at the end of the stator, so that in the subsequent expansion process, the inner paper protection block 13 can better protect the slot paper.

[0063] As attached Figure 3 As shown, in some embodiments, the flat wire motor flaring protection mechanism also includes more than two outer paper protection blocks 2 and a second drive device 3. The outer paper protection blocks 2 are arranged circumferentially. The second drive device 3 is transmission-connected to at least one outer paper protection block 2 and drives at least one outer paper protection block 2 to move radially. The outer paper protection block 2 is pressed against the wire of the outer ring of the stator through radial movement so that the wire is bent along the outer paper protection block 2.

[0064] Firstly, by arranging two or more outer paper protection blocks 2 in the circumferential direction, the outer paper protection blocks 2 can fit tightly and abut against the wires of the stator outer ring during the expansion process. When the stator wires are expanding outward, the wires of the stator outer ring can lean on the outer paper protection blocks 2, thereby reducing the friction and pulling between the slot paper and the wires during the expansion process, thereby avoiding the slot paper being pulled and damaged due to the force on the wires during expansion, and also preventing the wires from being damaged or deformed during the expansion process.

[0065] Furthermore, by providing a second driving device 3, the outer paper block 2 can be driven to move radially to abut against the wires of the stator outer ring. When the outer paper block 2 reaches the abutment, the wires of the stator outer ring can be in a state of more uniform force.

[0066] In some embodiments, the flat wire motor expansion protection mechanism also includes a limiting mechanism 4, which is used to abut against the outer paper block 2 to limit the radial outward movement of the outer paper block 2. Specifically, when the stator wire is expanding outward, the stator wire abuts against the outer paper block 2, so that the outer paper block 2 is subjected to a radial outward force. In order to ensure that the outer paper block 2 supports and guides the expansion of the stator wire and avoids the outer paper block 2 from failing to support due to radial outward displacement, the limiting mechanism 4 is abutted against the outer paper block 2 to avoid position deviation due to force during the expansion process. In this way, the limiting mechanism 4 can improve the stability and controllability of the expansion process. By limiting the radial outward movement of the outer paper block 2 through the limiting mechanism 4, the consistency and accuracy of the expansion are improved, which helps to reduce the defective rate in the production process and improve product quality.

[0067] For example, the limiting mechanism 4 may be located on the outer circumference of the outer paper protection block 2 , and the limiting mechanism 4 may abut against the radial outer sides of a plurality of circumferentially arranged outer paper protection blocks 2 .

[0068] Specifically, the limiting mechanism 4 includes a third driving device 41 and a pressing block 42, wherein the third driving device 41 is in transmission connection with the pressing block 42, and the third driving device 41 can drive the pressing block 42 to move against the radial outer side of the outer paper protection block 2 to limit the radial outward movement of the outer paper protection block 2. The transmission connection between the third driving device 41 and the pressing block 42 enables the movement of the pressing block 42 to be precisely controlled, for example, the abutting position of the pressing block 42 against the outer paper protection block 2 can be precisely controlled.

[0069] At the same time, the above-mentioned internal positioning mechanism 1 supports and positions the inner surface of the stator. When the pressure block 42 abuts against the outer side of the outer paper protection block 2 and limits the radial outward movement of the outer paper protection block 2, the stator can be placed in a reliable and stable expansion position, and then the copper wire expansion process is performed. In this way, the inner paper protection block 13 can support the inner ring of the stator to ensure that the copper wire is bent along the inner paper protection block 13 during the inward expansion process without damaging the slot paper, and the pressure block 42 can provide a reaction force to the outer paper protection block 2 to ensure that the copper wire is bent along the outer paper protection block 2 during the external expansion process, and the outer slot paper is effectively protected.

[0070] For example, the pressing block 42 can be made of wear-resistant and impact-resistant materials to improve its service life and stability. At the same time, the shape and size of the pressing block 42 can also match the outer paper protection block 2 to ensure effective abutment and limiting effects.

[0071] In addition, the third driving device 41 is used as a power source, and a servo motor, a cylinder, etc. can be used as the third driving device 41 to achieve fast and accurate motion control.

[0072] For example, the first driving device 11, the second driving device 3 and the third driving device 41 all use cylinders to achieve corresponding motion processes.

[0073] In some embodiments, the pressing block 42 is provided with a limiting inclined surface 401, and the limiting inclined surface 401 is configured to abut against the outer paper protection block 2 as the pressing block 42 moves. By providing the limiting inclined surface 401 on the pressing block 42, the limiting inclined surface gradually approaches the outer paper protection block 2 along the movement trajectory of the pressing block 42, so that the pressing block 42 can abut against the outer paper protection block 2 more smoothly, avoiding the instantaneous impact or instability that may be caused by the pressing block 42 directly abutting against the outer paper protection block 2.

[0074] For example, one end surface of the pressing block 42 facing the outer paper protection block 2 is configured as a limiting slope. When the third driving device 41 drives the pressing block 42 to move, the limiting slope gradually reduces the distance between the pressing block 42 and the pressing block 42 as the pressing block 42 moves, so that the limiting slope can finally gradually press against the radial outer side of the outer paper protection block 2, thereby realizing the radial outward limiting effect on the outer paper protection block 2.

[0075] In some embodiments, a positioning member 46 is provided on the outer paper shielding block 2, and the positioning member 46 is located between the pressing block 42 and the outer paper shielding block 2. When the pressing block 42 is located at a position that limits the radial outward movement of the outer paper shielding block 2, the two ends of the positioning member 46 are pressed tightly between the pressing block 42 and the outer paper shielding block 2. By providing the positioning member 46, it can be ensured that when the pressing block 42 limits the movement of the outer paper shielding block 2, the outer paper shielding block 2 can be stably maintained at a predetermined position. The two ends of the positioning member 46 are pressed tightly between the pressing block 42 and the outer paper shielding block 2, forming a stable support structure, which effectively prevents the outer paper shielding block 2 from moving or deviating during the expansion process. Moreover, since the positioning member 46 can accurately locate the position of the outer paper shielding block 2, the outer paper shielding block 2 can accurately contact the wire of the stator outer ring and guide it to bend during each expansion operation, thereby reducing errors and deviations in the expansion process and improving the accuracy and consistency of the expansion.

[0076] Please refer to the attached Figure 4 and attached Figure 5 Two positioning members 46 are provided at the rear end of each outer paper protection block 2, which can effectively prevent the outer paper protection block 2 from twisting and deforming due to uneven force during the expansion process.

[0077] For example, the positioning member 46 is a bolt, and two bolts are provided at the rear end of each outer paper protection block 2 , and the two bolts are correspondingly arranged with the pressing block 42 .

[0078] Furthermore, the surfaces of the positioning member 46 and the pressing block 42 that abut against each other are configured as arc surfaces. In this way, the pressing block 42, driven by the third driving device 41, abuts against the positioning member 46 through the limiting inclined surface to thereby press against the limiting block. In this process, the positioning member 46 adopts an arc surface design to reduce stress concentration or friction wear between the positioning member 46 and the pressing block 42, and avoids the situation where the pressure is excessively large or too small locally due to uneven pressure distribution.

[0079] In some specific embodiments, the flat wire motor expansion protection mechanism also includes a sensor 7. When the two ends of the positioning member 46 are pressed between the pressing block 42 and the outer paper protection block 2, the sensor 7 can send a signal in response. Through real-time monitoring by the sensor 7, it is convenient to prompt the operator or the equipment to timely understand the pressing state of the positioning member 46. Once the sensor 7 sends a signal, the operator or the equipment can respond quickly. For example, when the two ends of the positioning member 46 are pressed between the pressing block 42 and the outer paper protection block 2, the sensor 7 can send a signal to prompt the expansion process. In addition, the application of the sensor 7 also improves the automation and intelligence of the flat wire motor expansion protection mechanism. By linking with other control systems or equipment, it reduces manual intervention and operation errors, and improves production efficiency and product quality.

[0080] In some embodiments, a base 5 is further included, and the base 5 is provided with a mounting groove 501 , and a plurality of outer paper protection blocks 2 are arranged circumferentially along the mounting groove 501 .

[0081] For example, Figure 4 As shown, the installation groove 501 is configured as a circular groove, and the outer paper protection blocks 2 are arranged circumferentially along the installation groove 501 to form a circular shape, so that the outer paper protection blocks 2 can be evenly distributed and act on the wires of the stator outer ring through radial movement.

[0082] Specifically, the limiting mechanism 4 also includes a pressing ring 43, which is installed in the mounting groove 501. The pressing ring 43 is connected to the pressing block 42 and is in transmission connection with the third driving device 41. The third driving device 41 drives the pressing ring 43 to rotate along the mounting groove 501 to drive the pressing block 42 to move to the radial outer side of the outer paper protection block 2. In this way, the third driving device 41 drives the pressing ring 43 to rotate along the mounting groove 501, and drives the pressing block 42 to move relative to the outer paper protection block 2 during the rotation process. In this process, the pressing block 42 can be driven to a position that is tightly against the outer paper protection block 2. Moreover, the pressing ring 43 and the third driving device 41 only need to set up a set of corresponding transmission connection structures to realize radial limiting of multiple circumferentially arranged outer paper protection blocks 2, so as to prevent multiple outer paper protection blocks 2 from moving radially outward. In this way, there is no need to set up the third driving device 41 for each of the multiple outer paper protection blocks 2 to drive the limiting process of the pressing block 42, which greatly simplifies the structure of the limiting device.

[0083] Furthermore, the limiting mechanism 4 also includes a slewing bearing 44 and a connecting rod 45. The slewing bearing 44 is nested in the inner surface of the mounting groove 501. The connecting rod 45 is rotatably connected between the slewing bearing 44 and the third driving device 41. The slewing bearing 44 is connected to the pressure ring 43. Under the drive of the third driving device 41, the slewing bearing 44 can rotate relative to the mounting groove 501 to drive the pressure ring 43 and the pressure block 42 to move.

[0084] like Figure 6 As shown, specifically, the slewing bearing 44 is nested in the inner surface of the mounting groove 501 and serves as a rotation support point, so that the pressure ring 43 and the pressure block 42 can move with the slewing bearing 44, ensuring the stability of the pressure ring 43 and the pressure block 42 during the movement, and effectively reducing friction and wear, thereby increasing the service life of the entire mechanism. The connecting rod 45 serves to connect the slewing bearing 44 and the third driving device 41. When the third driving device 41 is started, the power can be transmitted to the slewing bearing 44 through the connecting rod 45, thereby driving the slewing bearing 44 to rotate relative to the mounting groove 501. This transmission method is simple and efficient.

[0085] In some embodiments, the flat wire motor expansion protection mechanism further includes a column 6, which is nested inside the mounting groove 501. The inner support positioning member 12 is disposed on the column 6 and can move radially relative to the column 6 to reach the inner surface of the stator. Figure 1 The nesting of the column 6 and the mounting groove 501 forms a accommodating space for installing the stator therebetween. The inner support positioning piece 12 is arranged on the column 6 and can be precisely moved along the radial direction of the column 6. The mounting groove 501 on the base 5 is circumferentially arranged with outer paper protection blocks 2. The outer paper protection blocks 2 can move inwardly in the radial direction until they are against the wire on the outer surface of the stator. Such internal and external cooperation is conducive to improving the positioning accuracy of the stator, and can effectively protect the slot paper, so that the expansion consistency is good and the expansion process is stable and reliable.

[0086] Two aspects of the embodiments of the utility model disclose a flat wire motor expanding device for expanding the stator of the flat wire motor, comprising a expanding wire pulling mechanism and a flat wire motor expanding protection mechanism of any of the above embodiments, wherein the expanding wire pulling mechanism is used for expanding the stator, and the flat wire motor expanding protection mechanism is used for placing the stator to be expanded. By setting up a flat wire motor expansion protection mechanism, the inner support positioning member 12 in the inner positioning mechanism 1 can position the stator inner support, thereby providing stable support for the stator during the expansion process of the stator, avoiding displacement due to force and causing wear of the slot paper and the wire, and the inner paper protection block 13 moves radially with the inner support positioning member 12 to the wire resting on the inner surface of the stator. When the wire of the inner ring of the stator needs to be expanded inwardly, since the wire rests on the inner paper protection block 13, the inner paper protection block 13 can guide the wire to bend along its surface, effectively reducing the direct contact and friction between the wire and the slot paper, so that the slot paper will not be damaged. The slot paper is effectively protected and the consistency of the expansion and bending is ensured, thereby improving the product qualification rate.

[0087] It is understandable that those skilled in the art can make equivalent substitutions or changes based on the technical solution and the utility model concept of the utility model, and all these changes or substitutions should fall within the protection scope of the utility model.

Claims

1. A flat wire motor expansion protection mechanism, characterized in that: include: An internal positioning mechanism, the internal positioning mechanism includes a first drive device, an internal support positioning member and an inner paper protection block, the first drive device is in transmission connection with the internal support positioning member, and can drive the internal support positioning member to move radially, so that the internal support positioning member abuts against the inner surface of the stator through radial movement to position the stator inner support, wherein the inner paper protection block is arranged on the internal support positioning member, and can move radially with the internal support positioning member to abut against the wire of the inner ring of the stator, so that the wire is bent along the inner paper protection block.

2. The flat wire motor expansion protection mechanism according to claim 1, characterized in that: The number of the inner support positioning members is more than two, and the inner support positioning members are arranged along the circumferential direction, and each of the inner support positioning members is provided with the inner paper protection block.

3. The flat wire motor expansion protection mechanism according to claim 2, characterized in that: Two or more inner paper protection blocks are arranged at intervals along the circumferential direction; When the inner support positioning member abuts against the inner surface of the stator to position the stator inner support, a preset gap is formed between the circumferentially adjacent inner paper protection blocks, and the preset gap is less than or equal to the spacing between the circumferentially adjacent wires of the stator inner ring.

4. The flat wire motor expansion protection mechanism according to claim 2 or 3, characterized in that: The inner paper protection block is provided with an arc-shaped abutting edge, and the inner paper protection block is used to make the abutting edge contact the stator inner ring through radial movement to abut against the wire of the stator inner ring.

5. The flat wire motor expansion protection mechanism according to any one of claims 1 to 3, characterized in that: A buffer is provided on the inner support positioning member, and the buffer is arranged at a position of the inner support positioning member for abutting against the inner surface of the stator.

6. The flat wire motor expansion protection mechanism according to any one of claims 1 to 3, characterized in that: A support member is provided on the inner support positioning member. The support member can move radially along with the inner support positioning member. The support member is used to abut against the bottom of the stator to support the stator.

7. The flat wire motor expansion protection mechanism according to any one of claims 1 to 3, characterized in that: Also includes: There are two or more outer paper guard blocks and a second drive device, wherein the outer paper guard blocks are arranged circumferentially, the second drive device is connected to at least one of the outer paper guard blocks for driving at least one of the outer paper guard blocks to move radially, and the outer paper guard blocks are pressed against the wire of the stator outer ring through radial movement so that the wire is bent along the outer paper guard blocks.

8. The flat wire motor expansion protection mechanism according to claim 7, characterized in that: Also includes: A limiting mechanism is used to abut against the outer paper protection block to limit the radial outward movement of the outer paper protection block.

9. The flat wire motor expansion protection mechanism according to claim 8, characterized in that: The limiting mechanism includes a third driving device and a pressure block. The third driving device is in transmission connection with the pressure block. The third driving device can drive the pressure block to move against the radial outer side of the outer paper guard block to limit the radial outward movement of the outer paper guard block.

10. The flat wire motor expansion protection mechanism according to claim 9, characterized in that: The pressing block is provided with a limiting inclined surface, and the limiting inclined surface is configured to abut against the outer paper protection block as the pressing block moves.

11. The flat wire motor expansion protection mechanism according to claim 9, characterized in that: The outer paper guard block is provided with a positioning piece, and the positioning piece is located between the pressing block and the outer paper guard block. When the pressing block is located at a position that limits the radial outward movement of the outer paper guard block, the two ends of the positioning piece are tightly pressed between the pressing block and the outer paper guard block. It also includes a sensor, which can send a signal in response when the two ends of the positioning member are pressed between the pressing block and the outer paper protection block.

12. The flat wire motor expansion protection mechanism according to claim 9, characterized in that: It also includes a base, the base is provided with a mounting groove, and a plurality of outer paper protection blocks are arranged circumferentially along the mounting groove; The limiting mechanism also includes a pressure ring, which is installed in the mounting groove. The pressure ring is connected to the pressure block and is in transmission connection with the third driving device. The third driving device drives the pressure ring to rotate along the mounting groove to drive the pressure block to move to the radially outer side of the outer paper protection block.

13. The flat wire motor expansion protection mechanism according to claim 12, characterized in that: The limiting mechanism also includes a slewing bearing and a connecting rod. The slewing bearing is nested in the inner surface of the mounting groove. The connecting rod is rotatably connected between the slewing bearing and the third driving device. The slewing bearing is connected to the pressure ring. Under the drive of the third driving device, the slewing bearing can rotate relative to the mounting groove to drive the pressure ring and the pressure block to move.

14. The flat wire motor expansion protection mechanism according to claim 12, characterized in that: It also includes a column, which is nested in the inner side of the installation groove. The inner support positioning piece is arranged on the column and can move radially relative to the column to reach the inner surface of the stator.

15. A flat wire motor expansion device for expanding the stator of a flat wire motor, characterized in that ,include: A flaring wire pulling mechanism, used for flaring the stator; The flat wire motor expansion protection mechanism according to any one of claims 1 to 14, wherein the flat wire motor expansion protection mechanism is used to place the stator to be expanded.

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