Protection tooth for coil shaping, protection tooth device and coil shaping equipment

Abstract

The utility model provides a protection tooth for protection in a stator coil shaping process, and a protection tooth device and coil shaping equipment which are arranged based on the protection tooth. The protection tooth comprises a protection tooth body and protection tooth teeth integrally formed with the protection tooth body. When the coil is subjected to external shaping, the teeth of the protection teeth can be inserted between the part, protruding out of the iron core, of the coil winding and the insulation paper in the groove of the iron core, and at the moment, in the shaping process of the coil winding protruding out of the iron core, the acting force on the coil winding can act on the protection teeth on the inner side; therefore, the coil winding is prevented from directly extruding the insulation paper in the iron core groove, and the electrical performance defect of the stator caused by deformation or damage of the insulation paper is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to motor stator processing technology especially, it is the shaping process to the coil in the motor stator processing, and the protection tooth of the protection of insulating paper in the core slot and the coil shaping equipment of the shaping of coil. BACKGROUND

[0002] The motor stator includes a core, wire slots disposed in the core, and coil windings embedded in the wire slots. Therefore, during the stator manufacturing process, the enameled wire needs to be wound by a winding machine first to form the coil winding, and then the coil winding is transferred to the mold head of the coil embedding machine, and the coil winding is embedded into the wire slot on the core through the mold head.

[0003] After embedding the coil winding into the wire slot on the core, the coil needs to be shaped. The prior art provides some technologies for shaping the stator coil, such as the motor stator coil and the insulating paper shaping device in the embedded wire slot disclosed in CN106253593B, the motor winding group outer shaping device disclosed in CN110445325B, and the stator coil shaping device disclosed in CN113131687B. However, the above shaping devices do not protect the insulating paper embedded in the core recess during the shaping process of the coil, which causes the coil to squeeze the insulating paper, causing the insulating paper to be squeezed and deformed or even damaged, affecting the performance of the motor. SUMMARY

[0004] To solve the problem of coil winding squeezing insulating paper, causing the insulating paper to be squeezed and deformed or even damaged during the shaping of the existing motor stator coil, the present application provides a protection tooth, a protection tooth device, and a coil shaping device for coil shaping.

[0005] The protective tooth for coil shaping provided in this application embodiment includes a long, thin protective tooth body. The protective tooth body includes an integrally formed first end and a second end. The first end is provided with a protective tooth driving part for driving the protective tooth to move back and forth. The second end of the protective tooth is connected to a protective tooth tooth integrally formed with the protective tooth body. The protective tooth tooth includes a first transition portion, a second transition portion, a first straight connecting portion, a second straight connecting portion, a first arc-shaped tooth tip, and a second arc-shaped tooth tip. A symmetrical plane is provided in the middle along the length direction of the protective tooth body. The first straight connecting portion and the second straight connecting portion are symmetrical about the symmetrical plane. The first arc-shaped tooth tip and the second arc-shaped tooth tip are symmetrical about the symmetrical surface; the first transition portion is connected to the first direct connection portion and the second end of the protective tooth body, and the second transition portion is connected to the second direct connection portion and the second end of the protective tooth body, and the first transition portion and the second transition portion form a gradually contracting transition portion from the second end of the protective tooth body to the tooth of the protective tooth; the first end of the first arc-shaped tooth tip is connected to the first direct connection portion, the first end of the second arc-shaped tooth tip is connected to the second direct connection portion, and the second ends of the first arc-shaped tooth tip and the second ends of the second arc-shaped tooth tip are integrally connected to form an outwardly convex arc-shaped protective tooth portion.

[0006] The protective teeth provided in this application embodiment can be used in coil shaping equipment. When shaping the coil windings at both ends of the stator that protrude outside the iron core, the protective teeth can be inserted between the outer coil windings and the insulating paper. Thus, the shaping force of the outer coil windings will be blocked by the protective teeth, preventing it from directly contacting the insulating paper through the coil windings and causing compression or damage to the insulating paper.

[0007] Based on the same utility model objective, this application provides a protective tooth device, including an annular slide with a through hole in the middle, and a plurality of protective tooth grooves facing the center are evenly spaced along the first end face of the slide.

[0008] Each of the protective tooth grooves is provided with a protective tooth as described above that can move radially along the protective tooth groove;

[0009] A protective tooth drive module is provided, which is connected to the protective tooth drive part of each of the protective teeth and is used to drive the protective teeth to move along the protective tooth slide groove.

[0010] The protective tooth device provided by the embodiment of the application drives the protective teeth to move radially along the protective tooth sliding grooves of the sliding seat through the protective tooth driving module, so that all the protective teeth arranged on the protective tooth sliding grooves complete the two actions of extension and contraction.

[0011] Based on the same utility model purpose, the embodiment of the application further provides a coil shaping device, which comprises the protective tooth device as described above.

[0012] A plurality of outer shaping sliding grooves facing the center of the circle are uniformly and spacedly arranged on the second end face opposite to the first end face of the sliding seat along the circle;

[0013] An outer shaping block is arranged in each outer shaping sliding groove, and the outer shaping block is provided with a circular arc surface facing the center of the circle;

[0014] An outer shaping driving component is connected to the outer shaping block and drives the outer shaping block to move radially along the outer shaping sliding groove, and the circular arc surface of the outer shaping block is enclosed to form a circle when being close.

[0015] The coil outer shaping device provided by the embodiment of the application is used for shaping the outer coil winding protruding from the two ends of the stator core, and the outer shaping block arranged in the outer shaping sliding groove can move along the outer shaping sliding groove and be enclosed to form a circle when moving towards the center of the circle. Meanwhile, the protective tooth teeth are inserted between the outer coil winding and the insulating paper in the groove of the core, so that the insulating paper is protected, and the outer coil winding directly extrudes the insulating paper in the process of outer shaping of the outer wall coil winding, so that the extrusion or damage of the insulating paper is avoided, and the electrical performance of the stator is ensured to be good. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the technical description. Obviously, the drawings in the following description only constitute some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings.

[0017] Figure 1 The overall structure schematic diagram of the coil shaping device provided by the embodiment of the application is shown in the figure.

[0018] Figure 2 The explosion structure schematic diagram of the coil shaping device provided by the embodiment of the application is shown in the figure.

[0019] Figure 3Fig. 1 is a schematic view of a slide structure;

[0020] Figure 4 Fig. 1 is a schematic view of a slide structure; Figure 3 Fig. 1 is a schematic view of a slide structure;

[0021] Figure 5 Fig. 1 is a schematic view of a slide structure;

[0022] Figure 6 Fig. 1 is a schematic view of a slide structure.

[0023] Fig. 1 is a schematic view of a slide structure; 1, slide; 11, inner arc surface; 12, outer arc surface; 13, first end surface; 14, second end surface; 15, protection tooth sliding groove; 16, first positioning component; 17, outer shaping sliding groove; 18, second positioning component; 2, protection tooth; 21, protection tooth body; 211, first end; 212, second end; 22, protection tooth tooth; 221, first transition part; 222, second transition part; 223, first straight connecting part; 224, second straight connecting part; 225, first arc-shaped tooth tip part; 226, second arc-shaped tooth tip part; 23, first roller pin; 3, protection tooth rotating disc; 31, strip-shaped through groove; 311, first sub-groove; 312, second sub-groove; 313, third sub-groove; 314, fourth sub-groove; 315, fifth sub-groove; 32, protection tooth rotating disc rotating handle; 4, protection tooth gland; 41, stator supporting block; 42, stator positioning component; 5, outer shaping block; 51, outer shaping sliding block; 511, clamping groove; 52, outer shaping arc block; 521, buckle; 53, second roller pin; 6, outer shaping rotating disc; 61, outer shaping rotating disc rotating handle; 7, outer shaping gland. DETAILED DESCRIPTION

[0024] In the following, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0025] It should be noted that the terms "first", "second", "symmetrical", "array" and the like are only used for distinguishing description and position description purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "symmetrical" and the like can explicitly or implicitly include one or more of the features; similarly, for some features that are not limited in number by the words "two", "three" and the like, it should be noted that the features also belong to explicitly or implicitly including one or more feature numbers;

[0026] In the utility model, unless another definite provision and limitation, the terms such as " install " " connect " " fix " should be understood broadly;For example, it can be fixed connection, can be detachable connection, or integrated;It can be mechanical connection, can be directly connected, can be welded, can be indirectly connected through intermediate medium, can be the communication or mutual action relationship of two elements. For ordinary skilled person in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specification drawing combining specific conditions.

[0027] The embodiment of the utility model will be described in detail below in combination with the drawings.

[0028] The stator of motor generally includes the production of stator core in the production process, and the coil winding slot is arranged on the completed stator core, then the insulating paper is inserted in the slot, and the insulating paper is used for the electrical isolation of stator core and coil winding. Then the coil winding is wound by winding machine, and the coil winding is transferred to the slot inserted with insulating paper. The prior art also provides other coil winding insertion technology into the slot, such as directly winding the enameled wire in the slot of the iron core inserted with insulating paper by winding machine. These steps can adopt the mature technology provided by the prior art, which will not be described here. After the coil winding is inserted into the slot, the coil winding needs to be externally shaped. The embodiment of the application provides a coil shaping device.

[0029] As shown in Figures 1 to 6 The coil shaping device provided by the embodiment of the application mainly includes two parts of functions, one part is to externally shape the part of coil winding protruding from the iron core, that is, to provide an external shaping device, and the other part is to protect the insulating paper in the external shaping process, that is, to provide a protection tooth device.

[0030] The coil shaping device provided by the embodiment of the application has a slide base 1 as a basic component, and the slide base 1 provides a platform for installing various components. As shown in Figure 3 、 Figure 4 The slide base 1 is arranged in a whole circular ring shape, and the through hole arranged in the middle is used for passing through the stator core or the external coil winding on the stator core, so that the middle through hole is arranged according to the outer diameter of the stator core to be arranged, and is generally greater than the outer diameter of the stator core. The slide base 1 generally includes four surfaces, which are inner arc surface 11, outer arc surface 12, first end surface 13 (or lower end surface) and second end surface 14 (or upper end surface) arranged in parallel between the inner arc surface 11 and the outer arc surface 12.

[0031] The protection tooth sliding groove 15 is arranged on the first end surface 13 of the sliding base 1. One embodiment of the protection tooth sliding groove 15 is that it penetrates through the first end surface 13 from the inner circular surface 11 to the outer circular surface 12. In this way, on the one hand, the machining of the protection tooth sliding groove 15 is facilitated, and on the other hand, the movement of the protection tooth 2 in the protection tooth sliding groove 15 is facilitated. The protection tooth sliding groove 15 is arranged from the outer circular surface 12 to the inner circular surface 11 in the diametrical direction. The depth and width of the protection tooth sliding groove 15 are set according to the width and thickness of the protection tooth 2, and the protection tooth 2 is required to slide smoothly therein. The protection tooth sliding groove 15 is arranged in multiple, and the specific number thereof is determined according to the stator core slot that needs to be arranged. In principle, the insulation paper on each stator core slot needs to be covered by a protection tooth 2 for protection. Since the core slots are generally arranged uniformly and at intervals on the core, the protection tooth sliding groove 15 in the embodiment of the application is also arranged uniformly and at intervals.

[0032] Each protection tooth sliding groove 15 is provided with a protection tooth 2. As shown in Figure 1 , Figure 2 , Figure 5 The protection tooth provided by the embodiment of the application includes two parts: a protection tooth body 21 and a protection tooth tooth 22. The two parts are integrally formed, and the thicknesses of the two parts are sheet-shaped. The thicknesses are mainly set to meet the need of structural strength, so that the force on the protection tooth tooth 22 during the external shaping of the coil winding does not cause the protection tooth tooth 22 to be deformed obviously. The size of the protection tooth tooth 22 is set to meet the need that the protection tooth tooth 22 can pass through the gap between the coil windings of different slots very conveniently during the movement, and the protection tooth tooth 22 can cover the top gap of the slot, so as to protect the insulation paper in the slot.

[0033] The protective tooth provided by the embodiment of the present application is in the shape of a long strip, i.e., the overall width is much greater than the thickness, and the length is much greater than the width. Here, much greater means a quantity relationship of at least 2 times or more. The specific size is set according to the requirement. The protective tooth body includes a first end 211 and a second end 212 which are integrally formed, wherein, when the protective tooth 2 is placed in the protective tooth sliding groove 15, the first end 211 of the protective tooth body 21 is close to the outer circular arc surface 12 of the sliding seat, and the second end 212 is close to the inner circular arc surface 11. The first end 211 of the protective tooth body 21 is provided with a protective tooth driving part for driving the forward and backward movement of the protective tooth. The protective tooth driving part can be used to connect a power component. In the implementation method provided by the embodiment of the present application, a small cylinder can be connected to each protective tooth driving part to drive the movement of the protective tooth. However, this scheme needs very many small cylinders to be arranged in a circle, and the structure is complex, and it is difficult to control synchronously. In the preferred implementation manner provided by the embodiment of the present application, the protective tooth driving part is a first rolling needle 23 which is vertically arranged on the upper surface of the first end 211 of the protective tooth body 21 and is in the shape of a cylinder. Therefore, the protective tooth 2 in the embodiment of the present application can be integrally and synchronously driven to stretch out in the direction of the center of the circle by the protective tooth rotating disc 3, so as to play a role of protecting the insulating paper, or integrally and synchronously driven to contract in the direction away from the center of the circle, so that the protective tooth teeth are separated from the stator core.

[0034] The second end 212 of the protection tooth body 21 is connected with a protection tooth tooth 22 which is integrally formed with the protection tooth body 21. The protection tooth tooth 22 comprises a first transition part 221, a second transition part 222, a first straight connection part 223, a second straight connection part 224, a first arc-shaped tooth tip part 225 and a second arc-shaped tooth tip part 226. An intermediate part of the protection tooth body along the length direction of the protection tooth body is provided with a symmetry plane. The first straight connection part 223 and the second straight connection part 224 are symmetrical about the symmetry plane. The first arc-shaped tooth tip part 225 and the second arc-shaped tooth tip part 226 are symmetrical about the symmetry plane. The first transition part 221 is connected with the first straight connection part 223 and the second end 212 of the protection tooth body 21 respectively. The second transition part 222 is connected with the second straight connection part 224 and the second end 212 of the protection tooth body 21 respectively. The first transition part 221 and the second transition part 222 form a gradually converging transition part from the second end 212 of the protection tooth body 21 to the protection tooth tooth 22. The first end of the first arc-shaped tooth tip part 225 is connected with the first straight connection part 223. The first end of the second arc-shaped tooth tip part 226 is connected with the second straight connection part 224. The second end of the first arc-shaped tooth tip part 225 and the second end of the second arc-shaped tooth tip part 226 are integrally connected, forming an outwardly convex arc-shaped protection tooth tooth part. The transition part between two protection teeth can form a gap for avoiding the coil winding in different wire slots. The first arc-shaped tooth tip part 225 and the second arc-shaped tooth tip part 226 integrally form an outwardly convex arc-shaped protection tooth tooth tip. The arc-shaped protection tooth tooth tip is relatively smooth, does not damage the surface of the enameled wire, and is beneficial to covering the gap on the top of the wire slot and protecting the insulation paper in the coil.

[0035] The protection tooth rotating disc 3 is used for driving the protection tooth to move radially along the protection tooth sliding groove in the embodiment of the application. As shown in Figure 1 、 Figure 2 、 Figure 6 The protection tooth rotating disc 3 is a circular ring with a through hole in the middle. A corresponding number of strip-shaped through grooves 31 are arranged on the protection tooth rotating disc corresponding to the number of protection tooth sliding grooves of the sliding seat. The first rolling needle 23 is arranged in the strip-shaped through groove 31. The protection tooth rotating disc 3 is provided with a protection tooth rotating disc handle 32. The protection tooth rotating disc handle 32 is connected with a protection tooth driving module. In the embodiment of the application, the protection tooth driving module can be a cylinder, a servo motor or other power components which can provide driving force.

[0036] In the preferred embodiment of the protection tooth rotating disc provided by the embodiment of the present application, each strip-shaped through slot is provided with five sections from inside to outside, which are the first section slot 311, the second section slot 312, the third section slot 313, the fourth section slot 314 and the fifth section slot 315. The first section slot 311 is a circular arc slot, and the other four section slots are straight line slots. The overall length of the last four section slots is close, and the length of the first section slot 311 is about one fourth of the length of the last four section slots. The connecting angle between each section slot is between 150 degrees and 180 degrees. That is, the distance between the last section slot is greater than the distance between the first section slot. When the first needle 23 drives the protection tooth 2 to extend, the first needle 23 slides from the fifth section slot 315 to the first section slot 311, and when the first needle 23 is retracted, the first needle 23 slides from the first section slot 311 to the fifth section slot 315. In this way, the first needle 23 can smoothly slide in the strip-shaped through slot 31.

[0037] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 In a preferred embodiment provided by the embodiment of the present application, a first positioning component 16 is further arranged on the first end surface 13 of the sliding seat 1, which is used to limit the rotation range of the protection tooth rotating disc 3, so as to control the position of the extension of the protection tooth 2 and the position of the retraction. One implementation of the first positioning component 16 is a positioning screw. Other implementations can also be used, such as the cooperation of protrusions and grooves.

[0038] In the preferred embodiment provided by the embodiment of the present application, the protection tooth pressing cover 4 is further included. The overall shape of the protection tooth pressing cover 4 is a circular ring, and a through hole is arranged in the middle for the stator core or the coil winding protruding from the end of the stator core to pass through. One end surface of the protection tooth pressing cover 4 is provided with a containing space, and the protection tooth pressing cover 4 can be fixed on the sliding seat 1 by screws or clamping. The surface provided with the containing space faces the first end surface 13 of the sliding seat 1, and the protection tooth sliding groove 15 on the sliding seat 1, the protection tooth 2 and the protection tooth rotating disc 3 used to rotate the protection tooth 2 are sequentially arranged between the sliding seat 1 and the protection tooth pressing cover 4. A plurality of stator supporting blocks 41 are uniformly arranged on the inner arc surface of the protection tooth pressing cover 4. The stator supporting blocks 41 are used to contact the upper end surface or the lower end of the stator core, so as to support the stator. The planes of the stator supporting blocks 41 for supporting are on the same plane. The inner arc surface of the protection tooth pressing cover 4 is further provided with a stator positioning component 42. The stator positioning component 42 can be one or multiple. One preferred embodiment of the stator positioning component 42 is a clamping needle, which can be clamped into the groove penetrating through the upper and lower parts of the outer part of the stator core, so as to limit the rotation of the stator core and realize the positioning of the stator core.

[0039] The above detailed the protection tooth device which is based on the slide 1 and is arranged on the first end surface 13 of the slide 1. On the other side of the slide opposite to the first end surface 13, that is, on the second end surface 14 of the slide 1, an outer shaping device is arranged to perform outer shaping on the coil winding protruding from the core.

[0040] The outer shaping device is also based on the slide 1. A plurality of outer shaping grooves 17 are arranged on the second end surface 14 of the slide 1 and are uniformly spaced along the circular ring and face the center of the circle. The number of the outer shaping grooves 17 can be set as required to facilitate the driving of the outer shaping blocks to be enclosed into a circular shape. In the embodiment of the application, the outer shaping grooves are set to be four, six, or eight, ten or twelve, and preferably eight.

[0041] An outer shaping block 5 is arranged in each of the outer shaping grooves 17. The outer shaping block 5 includes an outer shaping sliding block 51 and an outer shaping arc block 52, wherein the outer shaping arc block 52 is provided with an arc surface, and the arc surfaces of all the outer shaping arc blocks 52 can be enclosed into a circular hole. The side of the outer shaping arc block 52 opposite to the arc surface is provided with a buckle 521, and the outer shaping sliding block 51 is correspondingly provided with a clamping groove 511, and the outer shaping sliding block and the outer shaping arc block are fixedly installed through the cooperation and connection of the buckle and the clamping groove.

[0042] The outer shaping sliding block 51 is connected with an outer shaping driving component, and the outer shaping sliding block is driven by the outer shaping driving component to slide along the outer shaping groove 17 in the radial direction, and the outer shaping sliding block 51 drives the outer shaping arc block 52 to move in the radial direction. When the outer shaping arc block 52 moves towards the center of the circle, all the outer shaping arc blocks push the coil winding protruding from the end surface of the core to move towards the center, so as to realize the outer shaping of the stator coil. When the outer shaping arc block performs the outer shaping on the coil, the coil is pressed towards the inside, which will press or damage the insulation paper in the slot. At this time, the tooth of the protection tooth is inserted between the coil and the insulation paper on the end surface of the core, so that the coil only presses the tooth of the protection tooth, thereby removing the force of the coil on the insulation paper, and the insulation paper is protected. When the outer shaping arc block moves closest to the inner arc surface of the slide, the arc surface of the outer shaping arc block is enclosed to form a circular hole, so that the coil outside the end surface of the stator core is integrated into a circular shape. Thus, the coil winding does not protrude to the arc surface outside the core.

[0043] In the embodiment of the present application, the outer shaping driving module can be provided as a plurality of small motors or air cylinders, and each outer shaping slider is connected with a motor or an air cylinder. In the preferred embodiment of the present application, an outer shaping turntable 6 is provided. The outer shaping turntable 6 provided in the embodiment of the present application is a circular ring with a through hole in the middle, and a corresponding number of strip-shaped through grooves are provided on the outer shaping turntable corresponding to the number of outer shaping sliding grooves of the sliding seat. A second rolling needle 53 is provided on the outer shaping slider. The second rolling needle 53 is arranged in the strip-shaped through groove; the outer shaping turntable is provided with an outer shaping turntable handle 61, and the outer shaping turntable handle 61 is connected with the outer shaping driving module, which can be realized by a single motor or air cylinder. The strip-shaped through groove of the outer shaping turntable is a straight groove, and the first end of the straight groove is close to the inner arc surface of the turntable, and the second end is close to the outer arc surface. The groove line of the straight groove is perpendicular to the radius of the endpoint of the first end of the connector.

[0044] The outer shaping device provided in the embodiment of the present application further comprises an outer shaping gland 7, which is an annular component with a through hole in the middle. The outer shaping gland 7 is provided with an outer shaping block accommodating space, and the outer shaping gland 7 is fixedly connected with the sliding seat 1, and the outer shaping block 5 and the outer shaping turntable 6 are accommodated in the outer shaping block accommodating space. Thus, on the second end surface 14 of the sliding seat 1, the outer shaping device composed of the sliding seat 1, the outer shaping sliding groove 17, the outer shaping block 5, the outer shaping turntable 6 and the outer shaping gland 7 is formed. A second positioning component 18 is further provided on the second end surface 14 of the sliding seat 1, which is used to limit the rotation range of the outer shaping turntable 6, so as to control the position of the outer shaping block 5 extending out and the position of the outer shaping block 5 retracting. One implementation of the second positioning component 18 is a positioning screw. It can also be realized by other ways, such as the cooperation positioning of protrusions and grooves.

[0045] The coil shaping device provided in the embodiment of the present application can be used to shape the coil outside one end of the stator core alone, or two coil shaping devices can be arranged above and below to simultaneously shape the coils outside the upper and lower end surfaces of the stator core. When the two coil shaping devices are arranged above and below to form a device that can simultaneously shape the upper and lower end surfaces of the stator core, in the coil shaping device arranged in the upper part, the outer shaping device faces upward, and the protection tooth device faces downward, while in the coil shaping device arranged in the lower part, the outer shaping device faces downward, and the protection tooth device faces upward.

[0046] The whole working principle of the coil shaping device provided by the application is as follows: the stator core with coils is automatically placed into the protective tooth pressure cover by the manipulator, is lifted by the stator supporting block, is supported by the stator supporting block, and is positioned by the stator positioning block. The whole coil shaping device and the stator core with coils are moved to the shaping station, the protective tooth rotating disc and the outer shaping rotating disc are driven to rotate by the power source, corresponding grooves are uniformly distributed on the protective tooth rotating disc and the outer shaping block rotating disc, the rollers move along the grooves of the rotating disc, thereby driving the protective tooth and the outer shaping block slider to move back and forth along the sliding seat fixed track, and the protection of the slot insulation and the shaping of the coil are realized. Since the outer shaping block is added, the coil wire damage and the coil flattening are effectively reduced, and the insulation paper is protected.

[0047] The above is only a specific implementation manner of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can easily think of various changes or replacements within the technical range disclosed by the present application, and these should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A protective tooth for coil shaping, characterized in that, The protective tooth body includes a first end and a second end which are integrally formed, the first end is provided with a protective tooth driving part for driving the protective tooth to move forward and backward, the second end is connected with a protective tooth tooth which is integrally formed with the protective tooth body, the protective tooth tooth includes a first transition part, a second transition part, a first straight connecting part, a second straight connecting part, a first arc-shaped tooth tip part and a second arc-shaped tooth tip part, wherein, a symmetry plane is arranged in the middle along the length direction of the protective tooth body, the first straight connecting part and the second straight connecting part are symmetrical about the symmetry plane, the first arc-shaped tooth tip part and the second arc-shaped tooth tip part are symmetrical about the symmetry plane; the first transition part is connected with the first straight connecting part and the second end of the protective tooth body respectively, the second transition part is connected with the second straight connecting part and the second end of the protective tooth body respectively, the first transition part and the second transition part form a gradually tapered transition part from the second end of the protective tooth body to the protective tooth tooth; the first end of the first arc-shaped tooth tip part is connected with the first straight connecting part, the first end of the second arc-shaped tooth tip part is connected with the second straight connecting part, the second end of the first arc-shaped tooth tip part and the second end of the second arc-shaped tooth tip part are integrally connected, forming an outward convex arc-shaped protective tooth tooth part.

2. The protective tooth for coil shaping as claimed in claim 1, wherein, The protective tooth driving part is a first roller pin which is vertically arranged on the upper surface of the first end of the protective tooth body and has a cylindrical shape.

3. A protective dental device characterized by, It comprises: A circular ring-shaped slide base with a through hole arranged in the middle, a plurality of protective tooth sliding grooves facing the center are uniformly and spacedly arranged on the first end surface of the slide base along the circular ring; Each of the protective tooth sliding grooves is provided with a protective tooth as described above which can move radially along the protective tooth sliding groove; A protective tooth driving module is connected with the protective tooth driving part of each of the protective teeth and used for driving the protective teeth to move along the protective tooth sliding grooves.

4. The mouthguard of claim 3, wherein the first and second layers are formed of a material that is substantially transparent to visible light. The protective tooth driving part is a first roller pin which is vertically arranged on the upper surface of the first end of the protective tooth body and has a cylindrical shape. It further comprises a protective tooth turntable which is a circular ring with a through hole arranged in the middle, a corresponding number of strip-shaped through grooves are arranged on the protective tooth turntable corresponding to the number of protective tooth sliding grooves of the slide base, the first roller pin is arranged in the strip-shaped through groove; the protective tooth turntable is provided with a protective tooth turntable handle which is connected with the protective tooth driving module.

5. The protective tooth device of claim 4, wherein It further comprises a first positioning component which controls the radial extension position and the radial retraction position of the protective tooth.

6. The protective tooth device of claim 4, wherein It further comprises a protective tooth gland which is an annular component with a through hole arranged in the middle, the protective tooth gland is provided with a protective tooth containing space, the protective tooth gland is fixedly connected with the slide base, and the protective tooth and the protective tooth turntable are contained in the protective tooth containing space.

7. The protective tooth device of claim 6, wherein The protective tooth gland is provided with a stator supporting block for supporting the stator and a stator positioning block for limiting the rotation of the stator.

8. A coil shaping apparatus characterized by, It comprises the protective tooth device as claimed in any one of claims 3 to 7; A plurality of outer shaping sliding grooves facing the center are uniformly and spacedly arranged on the second end surface opposite to the first end surface of the slide base along the circular ring. An outer shaping block is arranged in each of the outer shaping sliding grooves, and a circular arc surface is arranged towards the center of the outer shaping block; An outer shaping driving module is arranged, and the outer shaping driving component is connected to the outer shaping block and drives the outer shaping block to move radially along the outer shaping sliding groove, and the circular arc surface of the outer shaping block is enclosed to form a circular hole when close.

9. The coil shaping apparatus of claim 8, wherein A second rolling pin is arranged on the outer shaping block; An outer shaping rotating disc is further arranged, which is a circular ring with a through hole arranged in the middle, and a corresponding number of strip-shaped through grooves are arranged on the outer shaping rotating disc corresponding to the number of outer shaping sliding grooves of the sliding seat, and the second rolling pin is arranged in the strip-shaped through groove; The outer shaping rotating disc is provided with an outer shaping rotating disc handle, and the outer shaping rotating disc handle is connected to the outer shaping driving module.

10. The coil shaping apparatus of claim 9, wherein, An outer shaping gland is further arranged, which is an annular component with a through hole arranged in the middle, and the outer shaping gland is provided with an outer shaping block containing space, and the outer shaping gland is fixedly connected to the sliding seat, and the outer shaping block and the outer shaping rotating disc are contained in the outer shaping block containing space.

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