Fixing jig

Abstract

The invention relates to the technical field of motor manufacturing, and discloses a fixing jig. The fixing jig comprises a fixing structure, a rotary mounting structure, a clamping structure and a driving structure; the rotary mounting structure is rotatably arranged on the fixed structure, and the rotary mounting structure is provided with a mounting groove for placing a stator core; the clamping structure is arranged on the rotary mounting structure in a swinging manner, and a clamping opening of the clamping structure faces the mounting groove; the driving structure is arranged on the side, facing the mounting groove, of the fixing structure in a liftable mode, the clamping structure is located between the rotary mounting structure and the driving structure, the position, corresponding to the clamping structure, of the driving structure is provided with a driving face, in the working state, the clamping structure and the driving structure are staggered, and the clamping opening clamps the stator iron core; and in a non-working state, the driving structure ascends to enable the clamping structure to be tightly pressed on the driving surface, and the clamping opening of the clamping structure is opened. The fixing jig is compact and small in structural design, simple in structure and low in cost.

Description

Technical Field

[0001] The invention relates to the technical field of motor manufacturing, and in particular to a fixing fixture. Background Art

[0002] The stator of the motor is composed of a stator core and windings wound on the stator core. When a winding machine is used to wind the motor stator, a fixing jig is usually used to fix and position the stator core.

[0003] In the prior art, a plurality of chucks are usually installed on a bracket, and a fixed fitting is provided between two chucks to accommodate and fix the stator core. Then, a motor is used to drive the chucks to be retracted for unified clamping. The fittings of all the clamps are of the same size and cannot clamp stator cores of different specifications. If each chuck is driven by a separate motor, the mechanism will be bulky and the processing cost will be high. Summary of the invention

[0004] The main purpose of the present invention is to provide a fixing fixture, aiming to solve the technical problems of the existing fixing fixtures being complex, bulky and costly.

[0005] To achieve the above object, the present invention provides a fixing fixture, which includes a fixing structure;

[0006] A rotating mounting structure, wherein the rotating mounting structure can be rotatably disposed on the fixed structure, and the rotating mounting structure is provided with a mounting groove for placing the stator core;

[0007] A clamping structure, wherein the clamping structure can be swingably disposed on the rotating mounting structure, and a clamping opening of the clamping structure is disposed toward the mounting groove;

[0008] The driving structure is liftable and arranged on a side of the fixed structure facing the mounting groove, the clamping structure is located between the rotating mounting structure and the driving structure, and the driving structure is provided with a driving surface at a position corresponding to the clamping structure.

[0009] In the working state, the clamping structure and the driving structure are staggered, and the clamping opening clamps the stator core; in the non-working state, the driving structure rises so that the clamping structure is pressed against the driving surface, and the clamping opening of the clamping structure opens.

[0010] Optionally, in one embodiment, one end of the clamping structure can be telescopically disposed on an end of the rotating mounting structure away from the mounting slot, and the other end of the clamping structure can be swingably disposed on the other end of the rotating mounting structure, and the clamping mouth of the clamping structure is disposed toward the mounting slot, and the telescopic direction of the clamping structure is opposite to the swinging direction.

[0011] Optionally, in one embodiment, the clamping structure includes at least two clamping components, and the at least two clamping components are evenly distributed on the outer side wall of the rotating mounting structure.

[0012] Optionally, in one embodiment, the clamping assembly includes a clamping member, a connecting rod and an elastic member, one end of the clamping member is arranged toward the mounting groove, the other end of the clamping member is arranged on the swinging end of the connecting rod, and both ends of the elastic member are horizontally arranged on the rotating mounting structure and the retractable end of the connecting rod, respectively, and the tension of the elastic member drives the retractable end of the connecting rod to move in a direction away from the stator core while driving the swinging end of the connecting rod to move toward the stator core to clamp the stator core.

[0013] Optionally, in one embodiment, a rotating member is provided on the other end of the connecting rod, and when in a non-working state, the rotating member is pressed against the driving surface.

[0014] Optionally, in one embodiment, the clamping assembly further includes a pin and a connecting assembly, one end of the connecting assembly is disposed on the rotating mounting structure, and the other end of the connecting assembly and the swinging end of the connecting rod are movably connected via the pin.

[0015] Optionally, in one embodiment, the driving structure includes a first driving member and a pressure ring, one end of the first driving member is arranged on the fixed structure, the output end of the first driving member is arranged on the pressure ring, and the driving surface is arranged on the inner wall of the pressure ring.

[0016] Optionally, in one embodiment, the driving surface is an inclined surface, the inclined surface is arranged on the inner side wall of the pressure ring, and the distance between the center line of the pressure ring and the inclined surface gradually decreases with the insertion depth of the clamping structure.

[0017] Optionally, in one embodiment, a guide rod is provided on the fixed structure, one end of the guide rod is arranged on the fixed structure, and the pressure ring can be slidably mounted on the guide rod.

[0018] Optionally, in one embodiment, the rotating mounting structure includes a second driving member and a mounting seat, one end of the second driving member is disposed on the fixed structure, and an output end of the second driving member passes through the fixed structure and is connected to the mounting seat.

[0019] In the technical solution provided by the present invention, a rotating mounting structure is rotatably arranged on a fixed structure, and the rotating mounting structure is provided with a mounting groove for placing a stator core, a clamping structure is swingably arranged on the rotating mounting structure, a clamping mouth of a clamping decoupling is arranged toward the mounting groove, a driving structure is liftably arranged on a side of the fixed structure facing the mounting groove, the clamping structure is located between the rotating mounting structure and the driving structure, and a driving surface is provided on the driving structure corresponding to the position of the clamping structure. When in a working state, the clamping structure is staggered from the driving structure, and the clamping mouth clamps the stator core; when in a non-working state, the driving structure rises so that the clamping structure is pressed against the driving surface, and the clamping mouth of the clamping structure opens, thereby realizing a compact and compact structural design, a simple structure and low cost for the fixed fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] One or more embodiments are exemplarily described by corresponding drawings, which do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements, and the figures in the drawings do not constitute proportional limitations unless otherwise stated.

[0021] Figure 1 This is a schematic structural diagram of a state in which a first driving member of a fixing fixture lifts a pressure ring according to an embodiment of the present invention;

[0022] Figure 2 This is a schematic structural diagram of a state in which a first driving member of a fixing fixture presses down a pressing ring according to an embodiment of the present invention;

[0023] Figure 3 A schematic structural diagram of a clamping structure according to an embodiment of the present invention;

[0024] Figure 4 This is a schematic structural diagram of a state in which a first driving member lifts a pressure ring according to an embodiment of the present invention;

[0025] Figure 5 A cross-sectional view of a pressure ring according to an embodiment of the present invention;

[0026] Among them, 3, fixing fixture; 31, fixing structure; 311, guide rod; 312, first through hole; 32, rotating mounting structure; 321, mounting groove; 322, second driving member; 323, mounting seat; 324, mounting seat body; 325, fixing ring; 33, clamping structure; 331, clamping assembly; 332, clamping member; 333, connecting rod; 334, elastic member; 335, connecting assembly; 336, pin; 337, rotating member; 34, driving structure; 341, driving surface; 342, first driving member; 343, pressure ring; 40, stator core. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that when an element is described as "fixed to" another element, it can be directly on another element, or there can be one or more centered elements therebetween. When an element is described as "connected" to another element, it can be directly connected to another element, or there can be one or more centered elements therebetween. The terms "vertical", "horizontal", "left", "right", "inside", "outside" and similar expressions used in this specification are only for illustrative purposes. In the description of the present invention, the terms "first" and "second" are used only for descriptive purposes and cannot be understood as indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, unless otherwise specified, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features; the meaning of "multiple" is two or more. The term "include" and any variation thereof means non-exclusive inclusion, and one or more other features, integers, steps, operations, units, components and / or combinations thereof may be present or added.

[0028] In addition, unless otherwise expressly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or a connection between two components. All technical and scientific terms used in this specification have the same meaning as those generally understood by technicians in the technical field of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0029] In addition, the technical features involved in different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0030] Please refer to Figures 1 to 5 , an embodiment of the present invention discloses a fixing fixture 3.

[0031] In one embodiment, if Figure 1 and Figure 2 As shown, the fixing fixture 3 includes a fixing structure 31, a rotating installation structure 32, a clamping structure 33 and a driving structure 34.

[0032] The fixing structure 31 is used to support and carry the entire fixing fixture 3. The fixing structure 31 is a fixing plate, which is convenient for installing the fixing fixture 3 on the stator winding machine through the fixing plate. A first through hole 312 is provided in the center of the fixing plate.

[0033] One end of the rotating mounting structure 32 is arranged on one end surface of the fixed plate, and the other end of the rotating mounting structure 32 passes through the first through hole 312 of the fixed plate, and there is a gap between the rotating mounting structure 32 and the side wall of the first through hole 312, so that the rotating mounting structure 32 can be rotatably fixed on the fixed plate. The rotating mounting structure 32 is provided with a mounting groove 321, and the mounting groove 321 is used to place the stator core 40.

[0034] The clamping structure 33 is used to clamp the stator core 40 so that the stator core is fixed. The clamping structure 33 can be swingably arranged on the rotating installation structure 32, and the clamping opening of the clamping structure 33 is arranged toward the installation groove 321 so that the clamping opening can clamp the stator core 40.

[0035] The driving structure 34 is used to drive the clamping mouth of the clamping structure 33 to open, so as to facilitate the stator core 40 to be placed in the installation groove 321, or to remove the stator core 40 after the winding is completed. The driving structure 34 can be raised and lowered and arranged on the side of the fixed structure 31 facing the installation groove 321. The clamping structure 33 is located between the rotating installation structure 32 and the driving structure 34. When the driving structure 34 is in a descending state and is separated from the driving structure 34, the clamping structure 33 and the driving structure 34 are staggered in the working state, so that the clamping mouth can clamp the stator core 40; the driving structure 34 is provided with a driving surface 341 at a position corresponding to the clamping structure 33. When it is not in a working state, the driving structure 34 rises so that the clamping structure 33 is pressed against the driving surface 341, thereby opening the clamping mouth of the clamping structure 33, so as to facilitate the stator core 40 to be placed in the installation groove 321, or to remove the stator core 40 after the winding is completed. The fixing fixture 3 has a compact and small structure, a simple structure and low cost.

[0036] In one embodiment, the rotating mounting structure 32 includes a second driving member 322 and a mounting seat 323. One end of the second driving member 322 is arranged on the fixed structure 31. The output end of the second driving member 322 passes through the first through hole 312 of the fixed structure 31 and is connected to the mounting seat 323. The end face of the mounting seat 323 is provided with a mounting groove 321. The second driving member 322 can be a rotating motor, so that the rotating mounting structure 32 can rotate, and then during the winding process, the mounting seat 323 can drive the stator core 40 to rotate at an angle, and cooperate with the winding device to complete the winding. The mounting seat 323 is a hollow cylindrical structure, which can specifically be a hollow regular cylinder or a hollow cylinder, preferably a hollow cylinder, with a simple structure and easy assembly.

[0037] Furthermore, the mounting seat 323 includes a mounting seat body 324 and a fixing ring 325. The fixing ring 325 is inserted into a receiving groove on the mounting seat body 324. The inner ring diameter of the fixing ring 325 can be designed according to the stator core 40 of different specifications and sizes. That is, when it is necessary to fix the stator core 40 of different sizes, the fixing ring 325 with the corresponding inner ring diameter can be replaced to achieve preliminary fixation of the stator core 40, thereby avoiding the inner ring size of the fixing ring 325 being too large, and the stator core 40 being placed on the fixing ring 325 with too large a gap, causing the stator core 40 to be displaced during the winding process.

[0038] In one embodiment, if Figure 2 and Figure 3 As shown, one end of the clamping structure 33 can be telescopically arranged on the end of the rotating mounting structure 32 away from the mounting groove 321, and the other end of the clamping structure 33 can be swingably arranged on the other end of the rotating mounting structure 32, and the clamping mouth of the clamping structure 33 is arranged toward the mounting groove 321, and the telescopic direction of the clamping structure 33 is opposite to the swinging direction of the clamping structure 33, so that when one end of the clamping structure 33 is extended, the other end of the clamping structure 33 moves toward the mounting groove 321, so that the clamping mouth of the clamping structure 33 clamps the stator core 40, and when one end of the clamping structure 33 is retracted, the other end of the clamping structure 33 moves away from the mounting groove 321, so that the clamping mouth of the clamping structure 33 is opened, so that the stator core 40 is placed in the mounting groove 321, or the stator core 40 after winding is removed.

[0039] Furthermore, the clamping structure 33 includes at least two clamping components 331, and at least two clamping components 331 are evenly distributed on the outer wall of the mounting seat 323. The clamping components 331 can be 2, 3, 4, 5, 6, etc. In this embodiment, the number of clamping components 331 is not specifically limited, and a suitable number can be selected according to actual conditions. For example, when the number of clamping components 331 is 3, 3 clamping components 331 are arranged on the outer wall of the mounting seat 323 and are evenly distributed on the outer circumference of the mounting seat 323, so that the clamping force on the stator core 40 is uniform, thereby avoiding the stator core 40 from tilting.

[0040] Furthermore, the clamping assembly 331 includes a clamping member 332, a connecting rod 333 and an elastic member 334. The clamping end of the clamping member 332 is arranged toward the mounting groove 321, so that multiple clamping members 332 can be combined to form a clamping opening to clamp the stator core 40. The other end of the clamping member 332 is connected to the swinging end of the connecting rod 333, so that when the connection swings, it can drive the clamping member 332 to swing, thereby realizing the opening of the clamping opening. The cam 333 is provided with a plurality of springs which are provided on the support frame 321 and the support frame 322, respectively. The cam 333 is provided with a plurality of springs which are provided on the support frame 321 and the support frame 322, respectively. The stator core 40 can be clamped only by the tension of the elastic member 334, and there is no need for motor drive to achieve clamping, which reduces the design of motor drive parts. Not only does it make the structural design of the fixing fixture 3 compact and small, the structure is simple, and it is easy to assemble, but also the cost is low. The greater the tension of the elastic member 334, the greater the distance that the telescopic end of the connecting rod 333 will be driven away from the mounting seat 323, so that the swing end of the connecting rod 333 is closer to the mounting groove 321, and the clamping opening is smaller. The smaller the tension of the elastic member 334, the smaller the distance that the telescopic end of the connecting rod 333 will be driven away from the mounting seat 323, so that the swing end of the connecting rod 333 is further away from the mounting groove 321, and the clamping opening is larger, so that within the tension range of the elastic member 334, the fixing fixture 3 can clamp stator cores 40 of different specifications within a certain range, thereby improving the versatility of the fixing fixture 3.

[0041] Specifically, the clamping piece 332 is a strip plate structure, and the clamping end is an arc protrusion structure. The arc protrusion not only increases the contact area between the clamping piece 332 and the stator core 40 to improve the clamping force, but also avoids the area of ​​the clamping end being too large. When clamping, the clamping end cannot be completely in contact with the surface of the stator core 40, resulting in insufficient clamping force.

[0042] Furthermore, the clamping assembly 331 also includes a connecting assembly 335 and a pin 336. The connecting assembly 335 includes two connecting blocks, one end of each of the two connecting blocks is fixed on the mounting base 323, and the other ends of the two connecting blocks are provided with a second through hole, and the swinging end of the connecting rod 333 is located between the two connecting blocks, and a third through hole is provided at the position of the swinging end of the connecting rod 333 corresponding to the second through hole, and the pin 336 passes through a second through hole, a third through hole and another second through hole in sequence for active connection, so that the connecting rod 333 can swing, and the swinging direction of the swinging end of the connecting rod 333 is exactly opposite to the telescopic direction of the telescopic end of the connecting rod 333, so that the connecting rod 333 can drive the clamping member 332 to clamp the stator core 40 only by the tension of the elastic member 334.

[0043] Furthermore, a rotating member 337 is provided at the other end of the connecting rod 333, that is, a rotating member 337 is provided at one end of the connecting rod 333 close to the telescopic end, and the rotating member 337 enables the clamping structure 33 to be more smoothly inserted into the driving surface 341 of the driving structure 34. The rotating member 337 is a bearing with a simple structure and high motion accuracy.

[0044] In one embodiment, if Figure 4 and Figure 5 As shown, the driving structure 34 includes a first driving member 342 and a pressing ring 343. One end of the first driving member 342 is fixed on the surface of the fixing structure 31 facing the mounting groove 321. The output end of the first driving member 342 is arranged on the pressing ring 343. The driving surface 341 is arranged on the inner side wall of the pressing ring 343, so that the first driving member 342 can drive the pressing ring 343 to move upward or downward. When in a non-working state, the first driving member 342 drives the pressing ring 343 to move upward, so that the pressing ring 343 gradually approaches one end of the connecting rod 333 provided with a rotating member 337. As the height of the rotating member 337 rises, the rotating member 337 moves downward. 37 contacts with the driving surface 341, and the driving surface 341 gives an inward squeezing force to the rotating member 337 at this time. The inward squeezing force pushes the elastic member 334 to retract, so that the swinging end of the connecting rod 333 moves away from the mounting groove 321, thereby driving the clamping member 332 to move away from the mounting groove 321, and then the clamping member 332 opens, which makes it easy to place the stator core 40 in the mounting groove 321, or to remove the stator core 40 after winding. The clamping structure 33 can be driven to open through a driving member and a pressure ring 343. The structural design is compact and small, the structure is simple, the movement accuracy is high and the cost is low.

[0045] Specifically, the first driving member 342 may be a motor.

[0046] Furthermore, the driving surface 341 is an inclined surface, which is arranged on the inner side wall of the position of the pressing ring 343 corresponding to the connecting rod 333, and the distance between the center line of the pressing ring 343 and the inclined surface gradually decreases as the insertion depth of the clamping structure 33 increases, so that the clamping structure 33 can be smoothly inserted into the pressing ring 343 when the pressing ring 343 rises, and the telescopic end of the connecting rod 333 is gradually compressed as the pressing ring 343 rises, so that the elastic member 334 continues to retract, so that the swing end of the connecting rod 333 drives the clamping member 332 to gradually move away from the installation groove 321, thereby opening the clamping opening. The end of the inclined surface facing the fixed structure 31 is a circular arc protrusion structure, which plays a limiting role on the rotating member 337, preventing the rotating member 337 from directly carrying the connecting rod 333 through the pressing ring 343, resulting in the clamping structure 33 being unable to reset.

[0047] Furthermore, a guide rod 311 is provided on the fixed structure 31, one end of the guide rod 311 is provided on the fixed structure 31, and the pressure ring 343 can be movably sleeved on the guide rod 311, and the guide rod 311 improves the stability of the pressure ring 343 when performing an upward or downward movement. The guide rods 311 can be 1, 2, 3, 4, 5, 6, etc., and a suitable number can be selected according to actual conditions. Preferably, the number of guide rods 311 is 2, which can improve the stability of the movement of the pressure ring 343 and avoid too many guide rods 311 resulting in a complex and bulky structure.

[0048] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may also be combined, the steps may be implemented in any order, and there are many other changes in different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity. Although the present invention has been described in detail with reference to the above embodiments, a person of ordinary skill in the art should understand that the technical solutions described in the above embodiments may still be modified, or some of the technical features may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A fixing fixture for fixing a stator core, characterized in that: Fixed fixtures include: Fixed structure; A rotating mounting structure, wherein the rotating mounting structure can be rotatably disposed on the fixed structure, and the rotating mounting structure is provided with a mounting groove for placing the stator core; A clamping structure, wherein the clamping structure can be swingably disposed on the rotating mounting structure, and a clamping opening of the clamping structure is disposed toward the mounting groove; The driving structure is liftable and arranged on a side of the fixed structure facing the mounting groove, the clamping structure is located between the rotating mounting structure and the driving structure, and the driving structure is provided with a driving surface at a position corresponding to the clamping structure. In the working state, the clamping structure and the driving structure are staggered, and the clamping opening clamps the stator core; in the non-working state, the driving structure rises so that the clamping structure is pressed against the driving surface, and the clamping opening of the clamping structure opens.

2. The fixing fixture according to claim 1, characterized in that: One end of the clamping structure can be telescopically arranged on an end of the rotating mounting structure away from the mounting slot, and the other end of the clamping structure can be swingably arranged on the other end of the rotating mounting structure, and the clamping mouth of the clamping structure is arranged toward the mounting slot, and the telescopic direction of the clamping structure is opposite to the swinging direction.

3. The fixing fixture according to claim 1, characterized in that: The clamping structure includes at least two clamping components, and the at least two clamping components are evenly distributed on the outer side wall of the rotating installation structure.

4. The fixing fixture according to claim 3, characterized in that: The clamping assembly includes a clamping member, a connecting rod and an elastic member, one end of the clamping member is arranged toward the mounting groove, the other end of the clamping member is arranged on the swinging end of the connecting rod, and the two ends of the elastic member are respectively transversely arranged on the rotating mounting structure and the telescopic end of the connecting rod, and the tension of the elastic member drives the telescopic end of the connecting rod to move in a direction away from the stator core, while driving the swinging end of the connecting rod to move toward the stator core to clamp the stator core.

5. The fixing fixture according to claim 4, characterized in that: A rotating member is provided on the other end of the connecting rod. When not in operation, the rotating member is pressed against the driving surface.

6. The fixing fixture according to claim 4, characterized in that: The clamping assembly also includes a pin and a connecting assembly, one end of the connecting assembly is arranged on the rotating mounting structure, and the other end of the connecting assembly and the swing end of the connecting rod are movably connected through the pin.

7. The fixing fixture according to claim 1, characterized in that: The driving structure includes a first driving member and a pressure ring, one end of the first driving member is arranged on the fixed structure, the output end of the first driving member is arranged on the pressure ring, and the driving surface is arranged on the inner side wall of the pressure ring.

8. The fixing fixture according to claim 7, characterized in that: The driving surface is an inclined surface, which is arranged on the inner side wall of the pressure ring, and the distance between the center line of the pressure ring and the inclined surface gradually decreases with the insertion depth of the clamping structure.

9. The fixing fixture according to claim 7, characterized in that: A guide rod is provided on the fixed structure, one end of the guide rod is arranged on the fixed structure, and the pressure ring can be slidably sleeved on the guide rod.

10. The fixing fixture according to claim 1, characterized in that: The rotating mounting structure comprises a second driving member and a mounting seat, one end of the second driving member is arranged on the fixing structure, and an output end of the second driving member passes through the fixing structure and is connected to the mounting seat.

Images