Clamping tool for welding flat wire motor stator

Abstract

The utility model discloses a clamping tool for welding a flat wire motor stator. The clamping tool comprises a base, a driving mechanism and a plurality of wire clamping mechanisms, wherein the thread clamping mechanisms are sequentially arranged and distributed in the circumferential direction of the base, each thread clamping mechanism comprises a first clamping jaw and a second clamping jaw which correspond to each other and are arranged side by side, and a thread clamping interval for a thread end to stretch in is arranged between each first clamping jaw and the corresponding second clamping jaw; the first clamping jaw and the second clamping jaw are connected into the base in a sliding mode, and the driving mechanism is connected with the first clamping jaw and the second clamping jaw and used for driving the first clamping jaw and the corresponding second clamping jaw to move in the face-to-face or back-to-back mode. According to the utility model, the heads of the two flat wires in the wire end can be clamped and attached along the radial direction, and also can be clamped and aligned along the tangential direction, so that the welding quality of the wire end can be improved.

Description

Technical Field

[0001] The utility model relates to a clamping tool for welding a flat wire motor stator. Background Art

[0002] At present, the stator assembly in the flat wire motor includes a stator core and a stator winding connected to the stator core. The end of the stator winding has multiple wire ends, each of which is composed of two flat wire heads overlapped. During the production process, the wire ends need to be welded to weld the two flat wire heads together.

[0003] In the actual production process, the two flat wire heads in a wire end may not fit together in the radial direction of the stator core and may be misaligned in the tangential direction of the stator core, which will result in unqualified quality of the wire end after welding. In order to solve the above problems, it is necessary to use tooling to clamp the wire end when welding. For example, the Chinese patent with the announcement number CN117086501A discloses a welding clamping device for a flat wire motor flat wire terminal. The welding clamping device can clamp the wire end through an outer clamp and an inner clamp. However, in the welding clamping device, the outer clamp and the inner clamp can only clamp the wire end in the radial direction and then clamp the two flat wire heads in the wire end in the radial direction, but cannot align the two flat wire heads in the wire end in the tangential direction, so it still affects the welding quality of the wire end. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a clamping tool for welding the stator of a flat wire motor, which can not only clamp the two flat wire heads in the wire end in the radial direction, but also clamp and align the two flat wire heads in the wire end in the tangential direction, thereby helping to improve the welding quality of the wire end.

[0005] In order to solve the above technical problems, the technical solution of the utility model is: a clamping tool for welding the stator of a flat wire motor, comprising a base, a driving mechanism and a plurality of wire clamping mechanisms;

[0006] The wire clamping mechanisms are sequentially arranged and distributed along the circumference of the base;

[0007] The thread clamping mechanism includes a first clamping jaw and a second clamping jaw corresponding to each other and arranged in parallel, a thread clamping gap is provided between the first clamping jaw and the corresponding second clamping jaw for the thread end to extend into, and the first clamping jaw and the second clamping jaw are respectively slidably connected to the base;

[0008] The driving mechanism is connected to the first clamping jaw and the second clamping jaw respectively and is used to drive the first clamping jaw and the corresponding second clamping jaw to move toward or away from each other;

[0009] During the process of the first clamping jaw and the corresponding second clamping jaw moving toward each other, the first clamping jaw has a first tangential displacement component moving along the tangent direction of the base toward the clamping interval and a first radial displacement component moving inwardly along the radial direction of the base, while the second clamping jaw has a second tangential displacement component moving along the tangent direction of the base toward the clamping interval and a second radial displacement component moving outwardly along the radial direction of the base;

[0010] The first clamping jaw is provided with at least one first protruding tooth and at least one first clamping surface at one end portion facing the wire clamping interval, and the second clamping jaw is provided with at least one second protruding tooth and at least one second clamping surface at one end portion facing the wire clamping interval; wherein, when the first clamping jaw and the corresponding second clamping jaw move toward each other into position, the first protruding tooth is used to press against the outer side wall of the corresponding thread head and the second protruding tooth is used to press against the inner side wall of the corresponding thread head to clamp the thread head radially, and the first clamping surface is used to press against any one of the left side wall and the right side wall of the corresponding thread head and the second clamping surface is used to press against the other of the left side wall and the right side wall of the corresponding thread head to clamp and align the thread head tangentially.

[0011] Furthermore, the base is provided with a first oblique groove corresponding to the first clamping jaw, and the first clamping jaw is provided with a first slider slidably fitted in the corresponding first oblique groove, the first oblique groove being used to guide the first slider and the first clamping jaw to slide, so that the first clamping jaw has a first tangential displacement component moving along the tangent direction of the base toward the clamping line interval and a first radial displacement component moving inward along the radial direction of the base during the process of moving toward the corresponding second clamping jaw;

[0012] The base is provided with a second inclined groove corresponding to the second clamping jaw, and the second clamping jaw is provided with a second slider that slides in the corresponding second inclined groove. The second inclined groove is used to guide the sliding of the second slider and the second clamping jaw so that the second clamping jaw has a second tangential displacement component that moves along the tangent direction of the base toward the clamping line interval and a second radial displacement component that moves radially outward along the base during the process of moving toward the corresponding first clamping jaw.

[0013] Furthermore, the thread clamping interval is used to insert a plurality of thread ends;

[0014] The first clamping jaw is provided with a plurality of first protruding teeth and a plurality of first clamping surfaces at one end thereof facing the thread clamping interval, wherein the first protruding teeth and the first clamping surfaces correspond to thread ends in the thread clamping interval one by one, and the first protruding teeth and the first clamping surfaces are alternately arranged in sequence;

[0015] The second clamping jaw is provided with a plurality of second protruding teeth and a plurality of second clamping surfaces at one end facing the wire clamping interval, the second protruding teeth and the second clamping surfaces respectively correspond to the wire ends in the wire clamping interval, and the second protruding teeth and the second clamping surfaces are arranged alternately in sequence.

[0016] Furthermore, the driving mechanism includes a driving assembly and a driving block corresponding to the wire clamping mechanism;

[0017] The driving block is slidably connected to the base in a radial direction of the base, and the driving block is respectively connected to the first clamping jaw and the second clamping jaw of the corresponding wire clamping mechanism by transmission;

[0018] The driving assembly is connected to the driving block, and is used to drive the driving block to move radially along the base, thereby driving the corresponding first clamping jaw and the corresponding second clamping jaw to move toward or away from each other through the driving block.

[0019] Furthermore, the driving block is provided with a first driving groove and a second driving groove, the first driving groove and the second driving groove are respectively arranged to be inclined relative to the sliding direction of the driving block, and the inclined directions of the first driving groove and the second driving groove are opposite;

[0020] The first clamping jaw is provided with a first driving pin, and the second clamping jaw is provided with a second driving pin;

[0021] The first driving pin is slidably fitted in a first driving groove on the corresponding driving block, and the second driving pin is slidably fitted in a second driving groove on the corresponding driving block.

[0022] Furthermore, the driving assembly includes a driving ring and an action mechanism for driving the driving ring to rotate;

[0023] The driving ring is rotatably connected to the base;

[0024] The driving block is provided with a driving pin, and the driving ring is provided with a driving groove corresponding to the driving pin, and the driving pin is fitted in the corresponding driving groove;

[0025] The action mechanism is connected to the base and the drive ring and is used to drive the drive ring to rotate, thereby driving the drive block to move radially through the cooperation between the transmission groove and the transmission pin.

[0026] Furthermore, the action mechanism includes a first connecting column, a second connecting column and a screw;

[0027] The first connecting column is rotatably connected to either the base or the driving ring;

[0028] The second connecting post is rotatably connected to the other of the base and the driving ring;

[0029] One end of the screw is rotatably connected to the first connecting column, and the other end of the screw is threadably connected to the second connecting column.

[0030] Furthermore, a first mounting portion is provided on the base, a second mounting portion is provided on the drive ring, the first connecting column is rotatably connected to the first mounting portion, and the second connecting column is rotatably connected to the second mounting portion.

[0031] Furthermore, the base includes an upper base body and a middle base body;

[0032] The upper seat body is connected to the middle seat body;

[0033] The first clamping jaw, the second clamping jaw, the driving block and the driving ring are all installed between the upper seat body and the middle seat body;

[0034] The first clamping jaw and the second clamping jaw are respectively slidably connected to the middle base;

[0035] The middle seat body is provided with a plurality of guide bodies arranged in sequence along the circumferential direction, and slideways are provided between adjacent guide bodies. The driving blocks correspond to the slideways one by one and are radially slidably arranged in the corresponding slideways.

[0036] The driving ring is rotatably arranged on the outside of the guide body, and the inner side wall of the driving ring is in contact with the guide body;

[0037] An outer ring wall protruding downward is provided on the outer periphery of the upper seat body, the driving ring is located on the inner side of the outer ring wall, and the outer side wall of the driving ring is in contact with and matched with the outer ring wall.

[0038] Furthermore, the stator core is connected to a stator winding, and the wire end is located at the end of the stator winding;

[0039] The base further includes a lower seat body connected to the lower end portion of the middle seat body;

[0040] The lower seat body is used to cooperate with the stator core for positioning. The lower seat body is provided with a plurality of positioning blocks distributed in sequence along the circumferential direction. The positioning blocks are provided with a positioning step portion for abutting against the upper end surface of the stator core and a side positioning portion for abutting against the outer side wall of the stator core.

[0041] After adopting the above technical scheme, the first jaw and the corresponding second jaw move toward or away from each other along an inclined path. When the driving mechanism drives the first jaw and the corresponding second jaw to move toward each other, the movement of the first jaw can be decomposed into tangential movement along the tangent direction toward the line clamping interval and radial movement along the radial inward, and the movement of the second jaw can be decomposed into tangential movement along the tangent direction toward the line clamping interval and radial movement along the radial outward; wherein, the first jaw and the second jaw will both move tangentially toward the line clamping interval, and then the first jaw and the second jaw will approach each other tangentially, so that the first clamping surface and the second clamping surface will respectively press against the right side wall and the left side wall of the corresponding thread head, and then the thread head will be clamped and aligned tangentially; at the same time, the first jaw will also move radially inward, and the second jaw will also move radially outward, so that the first convex tooth will press against the outer side wall of the thread head and the second convex tooth will press against the inner side wall of the thread head, and then the thread head will be clamped and fitted radially. Each of the wire ends is composed of two overlapping flat wire heads, so not only can the two flat wire heads in the wire end be clamped and fitted radially, but also the two flat wire heads in the wire end can be clamped and aligned tangentially, which is beneficial to improving the welding quality of the wire end. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Figure 1 This is a schematic structural diagram of a clamping fixture for welding a flat wire motor stator according to the present invention;

[0043] Figure 2 This is a cross-sectional view of the clamping fixture for welding the flat wire motor stator of the present invention;

[0044] Figure 3 This is an exploded view of the assembly of the clamping fixture for welding the flat wire motor stator of the utility model;

[0045] Figure 4 This is a schematic structural diagram of the driving mechanism and the wire clamping mechanism of the utility model;

[0046] Figure 5 The utility model is a partial assembly explosion of the driving mechanism and the clamping mechanism Figure 1 ;

[0047] Figure 6 The utility model is a partial assembly explosion of the driving mechanism and the clamping mechanism Figure 2 ;

[0048] Figure 7 This is a structural diagram of the utility model in which the first slider is slidably fitted in the first inclined groove and the second slider is slidably fitted in the second inclined groove;

[0049] Figure 8 This is a schematic diagram of the structure of the first clamping jaw and the second clamping jaw of the utility model when releasing the thread end;

[0050] Figure 9 This is a schematic diagram of the structure of the first clamping jaw and the second clamping jaw of the utility model when clamping the thread end. DETAILED DESCRIPTION

[0051] In order to make the contents of the present invention more clearly understood, the present invention is further described in detail below based on specific embodiments in conjunction with the accompanying drawings.

[0052] like Figures 1 to 9 As shown, a clamping fixture for welding a flat wire motor stator includes a base 1, a drive mechanism, and multiple wire clamping mechanisms;

[0053] The wire clamping mechanisms are sequentially arranged along the circumference of the base 1;

[0054] The thread clamping mechanism includes a first clamping jaw 2 and a second clamping jaw 3 corresponding to each other and arranged in parallel. A thread clamping gap 4 for the thread end 100 to extend into is provided between the first clamping jaw 2 and the corresponding second clamping jaw 3. The first clamping jaw 2 and the second clamping jaw 3 are respectively slidably connected to the base 1.

[0055] The driving mechanism is connected to the first clamping jaw 2 and the second clamping jaw 3 respectively and is used to drive the first clamping jaw 2 and the corresponding second clamping jaw 3 to move toward or away from each other;

[0056] During the process of the first clamping jaw 2 and the corresponding second clamping jaw 3 moving toward each other, the first clamping jaw 2 has a first tangential displacement component moving along the tangent direction of the base 1 toward the clamping interval 4 and a first radial displacement component moving inward along the radial direction of the base 1, while the second clamping jaw 3 has a second tangential displacement component moving along the tangent direction of the base 1 toward the clamping interval 4 and a second radial displacement component moving outward along the radial direction of the base 1;

[0057] The first clamping jaw 2 is provided with at least one first protruding tooth 5 and at least one first clamping surface 6 at one end facing the wire clamping interval 4, and the second clamping jaw 3 is provided with at least one second protruding tooth 7 and at least one second clamping surface 8 at one end facing the wire clamping interval 4; wherein, when the first clamping jaw 2 and the corresponding second clamping jaw 3 move toward each other into position, the first protruding tooth 5 is used to press against the outer side wall of the corresponding thread head 100 and the second protruding tooth 7 is used to press against the inner side wall of the corresponding thread head 100, thereby clamping the thread head 100 radially, and the first clamping surface 6 is used to press against any one of the left side wall and the right side wall of the corresponding thread head 100 and the second clamping surface 8 is used to press against the other of the left side wall and the right side wall of the corresponding thread head 100, thereby clamping and aligning the thread head 100 tangentially. Specifically, the first clamping jaw 2 and the corresponding second clamping jaw 3 move toward or away from each other along an inclined path. When the driving mechanism drives the first clamping jaw 2 and the corresponding second clamping jaw 3 to move toward each other, the movement of the first clamping jaw 2 can be decomposed into a tangential movement along the tangent direction toward the clamping line interval 4 and a radial movement inward in the radial direction. The movement of the second clamping jaw 3 can be decomposed into a tangential movement along the tangent direction toward the clamping line interval 4 and a radial movement outward in the radial direction. The first clamping jaw 2 and the second clamping jaw 3 move toward the wire clamping interval 4, and then the first clamping jaw 2 and the second clamping jaw 3 will move closer to each other in the tangential direction, so that the first clamping surface 6 and the second clamping surface 8 will respectively press against the right side wall and the left side wall of the corresponding wire end 100, thereby clamping and aligning the wire end 100 in the tangential direction; at the same time, the first clamping jaw 2 will also move radially inward, and the second clamping jaw 3 will also move radially outward, so that the first protruding teeth 5 will press against the outer side wall of the wire end 100 and the second protruding teeth 7 will press against the inner side wall of the wire end 100, thereby clamping and fitting the wire end 100 in the radial direction. More specifically, each of the wire ends 100 is composed of two overlapping flat wire heads 200. Therefore, in this embodiment, not only can the two flat wire heads 200 in the wire end 100 be clamped and fitted in the radial direction, but the two flat wire heads 200 in the wire end 100 can also be clamped and aligned in the tangential direction, which is beneficial to improving the welding quality of the wire end 100.

[0058] like Figure 2 、 5 As shown in Figures 1 to 9, the base 1 is provided with a first inclined groove 9 corresponding to the first clamping jaw 2, and the first clamping jaw 2 is provided with a first slider 10 that slides in the corresponding first inclined groove 9. The first inclined groove 9 is used to guide the first slider 10 and the first clamping jaw 2 to slide, so that the first clamping jaw 2 has a first tangential displacement component moving along the tangent direction of the base 1 toward the clamping line interval 4 and a first radial displacement component moving inward along the radial direction of the base 1 during the process of moving toward the corresponding second clamping jaw 3.

[0059] The base 1 is provided with a second beveled groove 11 corresponding to the second clamping jaw 3. The second clamping jaw 3 is provided with a second slider 12 that slides into the corresponding second beveled groove 11. The second beveled groove 11 is used to guide the sliding of the second slider 12 and the second clamping jaw 3, thereby causing the second clamping jaw 3 to have a second tangential displacement component that moves along the tangent direction of the base 1 toward the clamping gap 4 and a second radial displacement component that moves radially outward from the base 1 during the process of moving toward the corresponding first clamping jaw 2. In this embodiment, the first clamping jaw 2 corresponds one-to-one with the first beveled groove 9, and the second clamping jaw 3 corresponds one-to-one with the second beveled groove 11. The first slider 10 is located at the lower end of the first clamping jaw 2, and the second slider 12 is located at the lower end of the second clamping jaw 3. The first beveled groove 9 and the second beveled groove 11 have the same inclination direction. Specifically, the first clamping jaw 2 moves along the first beveled groove 9, and the second clamping jaw 3 moves along the second beveled groove 11.

[0060] like Figures 1 to 9 As shown, the wire clamping space 4 is used to insert a plurality of the wire ends 100;

[0061] The first clamping jaw 2 is provided with a plurality of first protruding teeth 5 and a plurality of first clamping surfaces 6 at one end thereof facing the thread clamping interval 4. The first protruding teeth 5 and the first clamping surfaces 6 correspond to the thread ends 100 in the thread clamping interval 4, respectively. The first protruding teeth 5 and the first clamping surfaces 6 are alternately arranged in sequence.

[0062] The second clamping jaw 3 is provided with a plurality of second protruding teeth 7 and a plurality of second clamping surfaces 8 at one end facing the wire clamping interval 4. The second protruding teeth 7 and the second clamping surfaces 8 correspond one-to-one to the wire ends 100 in the wire clamping interval 4, and the second protruding teeth 7 and the second clamping surfaces 8 are arranged alternately in sequence.

[0063] like Figure 1 、 3 , 4, 5, 6, 8, 9, the driving mechanism is for example but not limited to the following structure, which includes a driving assembly and a driving block 13 corresponding to the clamping mechanism;

[0064] The driving block 13 is connected to the base 1 in a radially sliding manner, and is connected to the first clamping jaw 2 and the second clamping jaw 3 of the corresponding wire clamping mechanism respectively by transmission;

[0065] The driving assembly is connected to the driving block 13, and the driving assembly is used to drive the driving block 13 to move radially along the base 1 and then drive the corresponding first clamping jaw 2 and the corresponding second clamping jaw 3 to move toward or away from each other through the driving block 13; in this embodiment, the driving mechanism corresponds one to one to the wire clamping mechanism.

[0066] like Figures 3 to 9 As shown, the driving block 13 is provided with a first driving groove 14 and a second driving groove 15. The first driving groove 14 and the second driving groove 15 are respectively arranged to be inclined relative to the sliding direction of the driving block 13, and the inclined directions of the first driving groove 14 and the second driving groove 15 are opposite;

[0067] The first clamping jaw 2 is provided with a first driving pin 16, and the second clamping jaw 3 is provided with a second driving pin 17;

[0068] The first drive pin 16 is slidably fitted into the corresponding first drive slot 14 on the drive block 13, and the second drive pin 17 is slidably fitted into the corresponding second drive slot 15 on the drive block 13. Consequently, when the drive assembly drives the drive block 13 to move radially, the drive block 13 can drive the first clamping jaw 2 to move through the cooperation between the first drive slot 14 and the first drive pin 16, and the drive block 13 can drive the second clamping jaw 3 to move through the cooperation between the second drive slot 15 and the second drive pin 17. The first clamping jaw 2 moves along the first oblique slot 9, and the second clamping jaw 3 moves along the second oblique slot 11. Furthermore, because the first drive slot 14 and the second drive slot 15 have opposite inclinations, the drive block 13 can drive the first clamping jaw 2 and the corresponding second clamping jaw 3 to move toward or away from each other. In this embodiment, when the drive block 13 moves radially inward, it can drive the first drive pin 16 and the second drive pin 17 toward each other, thereby driving the first clamping jaw 2 and the corresponding second clamping jaw 3 to move toward each other. When the drive block 13 moves radially outward, it can drive the first drive pin 16 and the second drive pin 17 apart from each other, thereby driving the first clamping jaw 2 and the corresponding second clamping jaw 3 to move away from each other. Specifically, the first drive pin 16 is provided on the upper end of the first clamping jaw 2, and the second drive pin 17 is provided on the upper end of the second clamping jaw 3.

[0069] like Figures 3 to 9 As shown, the driving assembly may include a driving ring 18 and an action mechanism for driving the driving ring 18 to rotate;

[0070] The driving ring 18 is rotatably connected to the base 1;

[0071] The driving block 13 is provided with a driving pin 19, and the driving ring 18 is provided with a driving groove 20 corresponding to the driving pin 19, and the driving pin 19 is fitted in the corresponding driving groove 20;

[0072] The action mechanism is connected to the base 1 and to the drive ring 18 and is used to drive the drive ring 18 to rotate, and then drive the drive block 13 to move radially through the cooperation between the transmission groove 20 and the transmission pin 19, and then drive the corresponding first clamping jaw 2 and the corresponding second clamping jaw 3 to move toward or away from each other through the drive block 13; in this embodiment, the transmission pin 19 corresponds to the transmission groove 20 one by one.

[0073] like Figure 1 、 3 As shown in FIG4 , the action mechanism may include a first connecting column 21, a second connecting column 22 and a screw 23;

[0074] The first connecting column 21 is rotatably connected to either the base 1 or the driving ring 18;

[0075] The second connecting post 22 is rotatably connected to the other of the base 1 and the driving ring 18;

[0076] One end of the screw 23 is rotatably connected to the first connecting column 21, and the other end of the screw 23 is threadedly connected to the second connecting column 22, so that when the screw 23 is rotated, the first connecting column 21 and the second connecting column 22 are driven to move closer to or away from each other, thereby driving the drive ring 18 to rotate forward or reverse relative to the base 1, and then driving the drive block 13 to move radially inward or outward through the cooperation between the transmission groove 20 and the transmission pin 19.

[0077] like Figure 1 、 3 As shown in , 4 , a first mounting portion 24 is provided on the base 1 , a second mounting portion 25 is provided on the drive ring 18 , the first connecting column 21 is rotatably connected to the first mounting portion 24 , and the second connecting column 22 is rotatably connected to the second mounting portion 25 .

[0078] like Figures 1 to 9 As shown, the base 1 may include an upper base body 26 and a middle base body 27;

[0079] The upper seat body 26 is connected to the middle seat body 27;

[0080] The first clamping jaw 2, the second clamping jaw 3, the driving block 13 and the driving ring 18 are all installed between the upper seat 26 and the middle seat 27;

[0081] The first clamping jaw 2 and the second clamping jaw 3 are respectively slidably connected to the middle seat body 27;

[0082] The middle seat 27 is provided with a plurality of guide bodies 28 arranged in a circumferential direction and spaced apart from each other. Slideways 29 are provided between adjacent guide bodies 28. The driving blocks 13 correspond to the slideways 29 one by one and are radially slidably disposed in the corresponding slideways 29.

[0083] The driving ring 18 is rotatably disposed on the outer side of the guide body 28 , and the inner side wall of the driving ring 18 is in contact with the guide body 28 ;

[0084] The outer periphery of the upper seat body 26 is provided with an outer ring wall 30 protruding downward, the drive ring 18 is located on the inner side of the outer ring wall 30, and the outer side wall of the drive ring 18 is in contact with and cooperates with the outer ring wall 30; specifically, the first inclined groove 9 and the second inclined groove 11 are provided on the middle seat body 27, the drive block 13 is located above the corresponding first clamping jaw 2 and the corresponding second clamping jaw 3, the drive ring 18 is located below the drive block 13, and the first mounting portion 24 is connected to the middle seat body 27.

[0085] like Figure 2 、 3 As shown, the stator core 300 is connected to the stator winding, and the wire end 100 is located at the end of the stator winding;

[0086] The base 1 further includes a lower base body 31 connected to the lower end of the middle base body 27;

[0087] The lower seat body 31 is used to cooperate with the stator core 300 for positioning. The lower seat body 31 is provided with a plurality of positioning blocks 32 spaced in sequence along the circumferential direction. The positioning blocks 32 are provided with a positioning step portion 33 for abutting against the upper end surface of the stator core 300 and a side positioning portion 34 for abutting against the outer wall of the stator core 300. Specifically, when the lower seat body 31 is cooperated with the stator core 300 for positioning, the wire head 100 is inserted into the wire clamping gap 4. In addition, using the first clamping jaw 2 and the second clamping jaw 3 to clamp the wire head 100 can also reduce the height of the straight section of the wire head 100, which is conducive to the miniaturization design of the flat wire motor.

[0088] In summary, the first clamping jaw 2 and the corresponding second clamping jaw 3 move toward or away from each other along an inclined path. When the driving mechanism drives the first clamping jaw 2 and the corresponding second clamping jaw 3 to move toward each other, the movement of the first clamping jaw 2 can be decomposed into a tangential movement along the tangent direction toward the clamping line interval 4 and a radial movement inward in the radial direction. The movement of the second clamping jaw 3 can be decomposed into a tangential movement along the tangent direction toward the clamping line interval 4 and a radial movement in the radial direction outward. The first clamping jaw 2 and the second clamping jaw 3 move tangentially toward the wire clamping interval 4, and then the first clamping jaw 2 and the second clamping jaw 3 will move tangentially closer to each other, so that the first clamping surface 6 and the second clamping surface 8 will respectively press against the right and left walls of the corresponding wire end 100, thereby clamping and aligning the wire end 100 tangentially. At the same time, the first clamping jaw 2 will also move radially inward, and the second clamping jaw 3 will also move radially outward, so that the first protruding teeth 5 will press against the outer wall of the wire end 100 and the second protruding teeth 7 will press against the inner wall of the wire end 100, thereby clamping and fitting the wire end 100 radially. Each of the wire ends 100 is composed of two overlapping flat wire heads 200. Therefore, not only can the two flat wire heads 200 in the wire end 100 be clamped and fitted radially, but the two flat wire heads 200 in the wire end 100 can also be clamped and aligned tangentially, which is beneficial to improving the welding quality of the wire end 100.

[0089] The specific embodiments described above further illustrate the technical problems, technical solutions and beneficial effects solved by the present invention. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A clamping fixture for welding a flat wire motor stator, characterized in that: It comprises a base (1), a driving mechanism and a plurality of wire clamping mechanisms; The wire clamping mechanisms are sequentially arranged and distributed along the circumference of the base (1); The thread clamping mechanism comprises a first clamping jaw (2) and a second clamping jaw (3) which are arranged in parallel and correspond to each other, a thread clamping gap (4) for a thread end (100) to extend into is provided between the first clamping jaw (2) and the corresponding second clamping jaw (3), and the first clamping jaw (2) and the second clamping jaw (3) are respectively slidably connected to the base (1); The driving mechanism is respectively connected to the first clamping jaw (2) and the second clamping jaw (3) and is used to drive the first clamping jaw (2) and the corresponding second clamping jaw (3) to move toward or away from each other; During the process of the first clamping jaw (2) and the corresponding second clamping jaw (3) moving toward each other, the first clamping jaw (2) has a first tangential displacement component moving along the tangent direction of the base (1) toward the clamping line interval (4) and a first radial displacement component moving inwardly along the radial direction of the base (1), while the second clamping jaw (3) has a second tangential displacement component moving along the tangent direction of the base (1) toward the clamping line interval (4) and a second radial displacement component moving outwardly along the radial direction of the base (1); The first clamping jaw (2) is provided with at least one first protruding tooth (5) and at least one first clamping surface (6) toward one end of the clamping interval (4), and the second clamping jaw (3) is provided with at least one second protruding tooth (7) and at least one second clamping surface (8) toward one end of the clamping interval (4); wherein, when the first clamping jaw (2) and the corresponding second clamping jaw (3) move toward each other into position, the first protruding tooth (5) is used to press against the outer side wall of the corresponding thread head (100) and the second protruding tooth (7) is used to press against the inner side wall of the corresponding thread head (100) to clamp the thread head (100) in radial direction, and the first clamping surface (6) is used to press against any one of the left side wall and the right side wall of the corresponding thread head (100) and the second clamping surface (8) is used to press against the other one of the left side wall and the right side wall of the corresponding thread head (100) to clamp and align the thread head (100) in tangential direction.

2. The clamping fixture for flat wire motor stator welding according to claim 1, characterized in that: The base (1) is provided with a first inclined groove (9) corresponding to the first clamping jaw (2); the first clamping jaw (2) is provided with a first slider (10) which is slidably fitted in the corresponding first inclined groove (9); the first inclined groove (9) is used to guide the first slider (10) and the first clamping jaw (2) to slide, thereby enabling the first clamping jaw (2) to have a first tangential displacement component moving along the tangent direction of the base (1) toward the clamping line interval (4) and a first radial displacement component moving inward along the radial direction of the base (1) during the process of moving toward the corresponding second clamping jaw (3); The base (1) is provided with a second inclined groove (11) corresponding to the second clamping jaw (3), and the second clamping jaw (3) is provided with a second slider (12) slidably fitted in the corresponding second inclined groove (11). The second inclined groove (11) is used to guide the second slider (12) and the second clamping jaw (3) to slide, thereby enabling the second clamping jaw (3) to have a second tangential displacement component moving along the tangent direction of the base (1) toward the clamping line interval (4) and a second radial displacement component moving radially outward along the base (1) during the process of moving toward the corresponding first clamping jaw (2).

3. The clamping fixture for flat wire motor stator welding according to claim 1, characterized in that: The thread clamping space (4) is used to insert a plurality of thread ends (100); The first clamping jaw (2) is provided with a plurality of first protruding teeth (5) and a plurality of first clamping surfaces (6) at one end thereof facing the line clamping interval (4), the first protruding teeth (5) and the first clamping surfaces (6) respectively corresponding to the thread ends (100) in the line clamping interval (4), and the first protruding teeth (5) and the first clamping surfaces (6) are alternately arranged in sequence; The second clamping jaw (3) is provided with a plurality of second protruding teeth (7) and a plurality of second clamping surfaces (8) at one end portion facing the line clamping interval (4), the second protruding teeth (7) and the second clamping surfaces (8) respectively corresponding to the thread ends (100) in the line clamping interval (4), and the second protruding teeth (7) and the second clamping surfaces (8) are arranged alternately in sequence.

4. The clamping fixture for flat wire motor stator welding according to claim 1, characterized in that: The driving mechanism comprises a driving assembly and a driving block (13) corresponding to the thread clamping mechanism; The driving block (13) is connected to the base (1) in a radially sliding manner, and the driving block (13) is respectively connected in a transmission manner to the first clamping jaw (2) and the second clamping jaw (3) in the corresponding wire clamping mechanism; The driving assembly is connected to the driving block (13), and the driving assembly is used to drive the driving block (13) to move radially along the base (1), thereby driving the corresponding first clamping jaw (2) and the corresponding second clamping jaw (3) to move toward or away from each other through the driving block (13).

5. The clamping fixture for welding the flat wire motor stator according to claim 4, characterized in that: The driving block (13) is provided with a first driving groove (14) and a second driving groove (15), the first driving groove (14) and the second driving groove (15) are respectively arranged to be inclined relative to the sliding direction of the driving block (13), and the inclination directions of the first driving groove (14) and the second driving groove (15) are opposite; The first clamping jaw (2) is provided with a first driving pin (16), and the second clamping jaw (3) is provided with a second driving pin (17); The first driving pin (16) is slidably fitted in the first driving groove (14) on the corresponding driving block (13), and the second driving pin (17) is slidably fitted in the second driving groove (15) on the corresponding driving block (13).

6. The clamping fixture for flat wire motor stator welding according to claim 4, characterized in that: The driving assembly includes a driving ring (18) and an action mechanism for driving the driving ring (18) to rotate; The driving ring (18) is rotatably connected to the base (1); The driving block (13) is provided with a driving pin (19), and the driving ring (18) is provided with a driving groove (20) corresponding to the driving pin (19), and the driving pin (19) is fitted in the corresponding driving groove (20); The action mechanism is connected to the base (1) and the drive ring (18) and is used to drive the drive ring (18) to rotate, thereby driving the drive block (13) to move radially through the cooperation between the transmission groove (20) and the transmission pin (19).

7. The clamping fixture for flat wire motor stator welding according to claim 6, characterized in that: The action mechanism comprises a first connecting column (21), a second connecting column (22) and a screw rod (23); The first connecting column (21) is rotatably connected to either the base (1) or the driving ring (18); The second connecting column (22) is rotatably connected to the other of the base (1) and the driving ring (18); One end of the screw rod (23) is rotatably connected to the first connecting column (21), and the other end of the screw rod (23) is threadably connected to the second connecting column (22).

8. The clamping fixture for flat wire motor stator welding according to claim 7, characterized in that: The base (1) is provided with a first mounting portion (24), the drive ring (18) is provided with a second mounting portion (25), the first connecting column (21) is rotatably connected to the first mounting portion (24), and the second connecting column (22) is rotatably connected to the second mounting portion (25).

9. The clamping fixture for welding the flat wire motor stator according to claim 6, characterized in that: The base (1) comprises an upper base body (26) and a middle base body (27); The upper seat body (26) is connected to the middle seat body (27); The first clamping jaw (2), the second clamping jaw (3), the driving block (13) and the driving ring (18) are all installed between the upper seat (26) and the middle seat (27); The first clamping jaw (2) and the second clamping jaw (3) are respectively slidably connected to the middle seat body (27); The middle seat (27) is provided with a plurality of guide bodies (28) arranged in a circumferential direction and spaced in sequence, and a slideway (29) is provided between adjacent guide bodies (28), and the driving blocks (13) correspond to the slideways (29) one by one and are radially slidably arranged in the corresponding slideways (29); The driving ring (18) is rotatably arranged on the outside of the guide body (28), and the inner side wall of the driving ring (18) is in contact with the guide body (28); The outer periphery of the upper seat (26) is provided with an outer ring wall (30) protruding downwards, the drive ring (18) is located on the inner side of the outer ring wall (30), and the outer side wall of the drive ring (18) is in contact with the outer ring wall (30).

10. The clamping fixture for flat wire motor stator welding according to claim 9, characterized in that: A stator winding is connected to the stator core (300), and the wire end (100) is located at the end of the stator winding; The base (1) further includes a lower base body (31) connected to the lower end of the middle base body (27); The lower seat (31) is used for cooperating with the stator core (300) for positioning. The lower seat (31) is provided with a plurality of positioning blocks (32) spaced apart in a circumferential direction. The positioning blocks (32) are provided with a positioning step portion (33) for abutting against the upper end surface of the stator core (300) and a side positioning portion (34) for abutting against the outer side wall of the stator core (300).

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