CN218771689U - Clamping device and winding machine - Google Patents

Abstract

This application is applicable to stator processing technology field, provides a clamping device and coiling machine, and the coiling machine includes clamping device, and clamping device includes: the base is used for receiving an annular to-be-clamped piece; the moving shaft is arranged on the base and can move relative to the base along a first axial direction and a second axial direction respectively, and the first axial direction and the second axial direction are opposite; the driving piece is arranged on the base and is used for at least driving the moving shaft to move along the first axial direction; the plurality of abutting arms are arranged around the periphery of the moving shaft in a surrounding manner and movably arranged on the base; the moving shaft can drive the plurality of abutting arms to move back to back when moving along the first axial direction, so that the plurality of abutting arms can abut against the inner peripheral side of the annular to-be-clamped piece at intervals; the plurality of abutting arms can move oppositely when the moving shaft moves along the second axial direction so as to release the annular to-be-clamped piece. So set up, clamping device can support the inner periphery side of holding annular stator through a plurality of arm dorsad of holding to the realization is to annular stator's stable centre gripping work.

Description

Clamping device and winding machine

Technical Field

The application belongs to the technical field of stator processing, and more specifically relates to a clamping device and a winding machine.

Background

In a winding process of a stator, a clamping device is generally used to clamp the stator so as to achieve stable winding of the stator.

For the annular stator, the volume and the weight of the annular stator are large, and if the annular stator is clamped by a clamping device such as a common pneumatic clamping finger, the clamping stability of the annular stator is poor inevitably, and the stable winding work of the annular stator is not facilitated.

SUMMERY OF THE UTILITY MODEL

One of the purposes of the embodiment of the application is as follows: the utility model provides a clamping device and coiling machine, aims at solving among the relevant art, the clamping stationarity's of stator technical problem poor.

In order to solve the technical problem, the embodiment of the application adopts the following technical scheme:

in a first aspect, a clamping device is provided for clamping a ring-shaped member to be clamped; the clamping device comprises:

the stand is used for receiving the annular to-be-clamped piece;

the moving shaft is arranged on the engine base and can move relative to the engine base along a first axial direction and a second axial direction respectively, and the first axial direction is opposite to the second axial direction;

the driving piece is arranged on the base and is used for at least driving the moving shaft to move along the first axial direction;

the plurality of abutting arms are arranged around the periphery of the moving shaft in a surrounding way and movably arranged on the base; the moving shaft can drive the plurality of abutting arms to move back to back when moving along the first axial direction, so that the plurality of abutting arms can abut against the inner peripheral side of the annular to-be-clamped piece at intervals; the plurality of abutting arms can move oppositely when the moving shaft moves along the second axial direction so as to release the annular to-be-clamped piece.

In one embodiment, the retaining arm comprises:

the arm body is movably arranged on the base and can abut against the inner peripheral side of the annular to-be-clamped piece or loosen the annular to-be-clamped piece;

the hook part is arranged on the arm body and can hook the annular to-be-clamped piece along the second axial direction when the arm body abuts against the inner peripheral side of the annular to-be-clamped piece.

In one embodiment, the abutting arm and the moving shaft are connected in a sliding manner, the direction of relative sliding of the abutting arm and the moving shaft is not parallel to the first axial direction and is not perpendicular to the first axial direction, and the moving shaft is used for reducing the part of the sliding connection abutting arm along the first axial direction.

In one embodiment, the outer peripheral side of the moving shaft is provided with a plurality of first sliding chutes which are arranged close to each other along the first axial direction; the supporting arm is provided with a guide rail, the guide rail is limited in the first sliding groove along the depth direction and the width direction of the first sliding groove respectively, and the guide rail can be arranged in the first sliding groove in a sliding mode along the length direction of the first sliding groove.

In one embodiment, the end of the guide rail is provided with a limiting part, and the limiting part is used for limiting outside one end of the first sliding chute after the moving shaft moves along the first axial direction.

In one embodiment, the base is provided with a plurality of second sliding grooves distributed at intervals, and each abutting arm is slidably arranged in each second sliding groove.

In one embodiment, the driving member is an elastic member, and the elastic member abuts against the base and the moving shaft.

In one embodiment, the moving shaft comprises a shaft body and a driving arm, the shaft body is movably arranged on the base along a first axial direction and a second axial direction respectively and is used for being driven by the driving piece along the first axial direction; the driving arm is arranged on the shaft body and exposed outside the engine base so as to drive the shaft body to move along a second axial direction under the action of external force.

In one embodiment, the base is provided with a positioning shaft which is arranged at a distance from the abutting arm, and the positioning shaft is used for being in plug fit with the annular to-be-clamped piece.

In a second aspect, a winding machine is provided, which includes a winding device and a clamping device, wherein the winding device is used for winding a stator clamped by the clamping device.

The clamping device and the winding machine provided by the embodiment of the application have the beneficial effects that:

the clamping device provided by the embodiment of the application has the advantages that during operation, the annular to-be-clamped piece is received on the base, the driving piece drives the moving shaft to move along the first axial direction, so that the plurality of abutting arms move in the back direction under the driving of the moving shaft and abut against the inner peripheral side of the annular to-be-clamped piece at intervals, and therefore the stable clamping effect of the clamping device on the annular to-be-clamped piece is achieved through the fact that the plurality of abutting arms abut against the inner side wall of the annular to-be-clamped piece in the back direction. So set up, when the folder is annular stator to the annular, clamping device also can be through a plurality of arms of holding back to the inner periphery side of holding annular stator to realize the stable centre gripping work to annular stator.

The winding machine that this application embodiment provided through adopting foretell clamping device, can carry out stable centre gripping work to annular stator, help realizing annular stator's stable wire winding effect.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive labor.

Fig. 1 is a perspective view of a ring stator in the related art;

fig. 2 is a schematic perspective view of a clamping device according to an embodiment of the present disclosure;

FIG. 3 is a partial schematic view of the clamping device shown in FIG. 2;

FIG. 4 is a partial schematic view of the clamping device shown in FIG. 3;

FIG. 5 is a perspective view of the axis of motion of the clamping device shown in FIG. 2;

FIG. 6 is an enlarged view taken at A in FIG. 5;

FIG. 7 is a perspective view of the holding arm of the clamping device shown in FIG. 2;

fig. 8 is a perspective view of a housing of the clamping device shown in fig. 2.

Wherein, in the figures, the various reference numbers:

100-a clamping device; 200-a ring stator; 201-a through hole; 202-a limit groove; 10-a stand; 101-a motion groove; 102-a second runner; 20-a drive member; 30-a motion axis; 301-a first runner; 31-a shaft body; 311-a barrier; 32-a drive arm; 40-a holding arm; 41-an arm body; 411-a guide rail; 412-a limiting part; 42-hook part; 50-positioning the shaft; 60-wire passing pieces; 601-a wire passing groove; y1-a first axial direction; y2-second axial direction.

Detailed Description

Reference will now be made in detail to the embodiments of the present application, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the drawings are exemplary and intended to be used for explaining the present application and should not be construed as limiting the present application.

In the description of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be considered limiting of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the description of the present application, "a plurality" means two or more, and "two or more" includes two unless specifically defined otherwise. Accordingly, "multiple groups" means more than two groups, including two groups.

In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and encompass, for example, both fixed and removable connections or integral parts thereof; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, the term "and/or" is only one kind of association relationship describing an associated object, and means that there may be three kinds of relationships, for example, a and/or B, which may mean: there are three cases of A, A and B, and B. In addition, in this application, the character "/" generally indicates that the preceding and succeeding related objects are in an "or" relationship.

The following detailed description is made with reference to the accompanying drawings and examples:

referring to fig. 1 and fig. 2, a clamping device 100 according to an embodiment of the present disclosure is mainly used for clamping a ring-shaped member to be clamped. Specifically, the annular member to be clamped is annular, that is, the middle portion of the annular member to be clamped has a through hole 201 penetrating in the axial direction thereof. Wherein the axial direction of the annular member to be clamped is as indicated by the direction Y in fig. 1.

As shown in fig. 1, the ring-shaped member to be clamped is a ring-shaped stator 200. Of course, in other embodiments, the ring-shaped member to be clamped may also be other ring-shaped structures such as a disk, etc., which need to be clamped, and is not limited herein.

As shown in fig. 2 to 4, the clamping device 100 includes a base 10, a moving shaft 30, a driving member 20, and a plurality of holding arms 40.

Specifically, the base 10 is used for receiving a ring-shaped member to be clamped.

The moving shaft 30 is movably disposed on the base 10 and is capable of moving relative to the base 10 along a first axial direction Y1 and a second axial direction Y2, respectively, where the first axial direction Y1 and the second axial direction Y2 are opposite. The moving shaft 30 is substantially in a shaft-like structure, and the first axial direction Y1 and the second axial direction Y2 are parallel to the axial direction of the moving shaft 30.

The plurality of holding arms 40 are disposed around the moving shaft 30 around the axial periphery and movably disposed on the base 10. The moving shaft 30 can drive the plurality of abutting arms 40 to move back to back in the process of moving along the first axial direction Y1, so that the plurality of abutting arms 40 abut against the inner peripheral side of the annular to-be-clamped member at intervals. When the moving shaft 30 moves in the second axial direction Y2, the plurality of holding arms 40 can move toward each other to remove the holding effect on the inner peripheral side of the annular to-be-clamped member, that is, to release the annular to-be-clamped member.

Wherein the moving shaft 30 is connected to the holding arm 40. Specifically, in the process that the moving shaft 30 moves along the first axial direction Y1, the movement of the moving shaft 30 along the first axial direction Y1 can drive the plurality of abutting arms 40 to move back to back, so that the abutting arms 40 abut against the inner peripheral side of the annular to-be-clamped member. Accordingly, during the movement of the moving shaft 30 along the second axial direction Y2, the movement of the moving shaft 30 along the second axial direction Y2 drives the plurality of abutting arms 40 to move towards each other, so that the abutting arms 40 release the annular to-be-clamped member. Alternatively, in other embodiments, the moving shaft 30 drives the holding arm 40 by holding the holding arm 40. Specifically, during the movement of the moving shaft 30 along the first axial direction Y1, the moving shaft 30 abuts against the abutting arms 40, so that the plurality of abutting arms 40 move back and abut against the inner peripheral side of the annular member to be clamped. Accordingly, during the movement of the moving shaft 30 along the second axial direction Y2, the moving shaft 30 gradually disengages from the holding arm 40, and at this time, the holding arm 40 can disengage from the annular member to be clamped under the external force, so that the annular member to be clamped can be taken away from the housing 10.

The driving member 20 is disposed on the base 10 and is configured to drive at least the moving shaft 30 to move along the first axial direction Y1. Specifically, the driving member 20 can drive the moving shaft 30 to move along the first axial direction Y1, so that the abutting arms 40 abut against the inner peripheral side of the annular member to be clamped under the driving of the moving shaft 30. The moving shaft 30 can move along the second axial direction Y2 under the external force, so that the abutting arm 40 can remove the abutting effect on the annular member to be clamped. Of course, the moving shaft 30 can also move along the second axial direction Y2 directly driven by the driving member 20, so that the holding arm 40 can remove the holding effect on the annular clamping member.

It should be noted that one side of the base 10 in the first axial direction Y1 is used for receiving a ring-shaped member to be clamped. When the annular member to be clamped is received on the base 10, the axial direction of the annular member to be clamped and the axial direction of the moving shaft 30 are substantially parallel, and the plurality of holding arms 40 are located in the through holes 201 of the annular member to be clamped. In this way, when the plurality of abutting arms 40 are driven by the moving shaft 30 to move back to back, the plurality of abutting arms 40 can abut against the inner peripheral side of the annular member to be clamped.

In the clamping device 100 according to the embodiment of the present application, when in operation, the moving shaft 30 is driven by an external force or the driving member 20 to move along the second axial direction Y2, so that the plurality of abutting arms 40 move in opposite directions. Then, the annular member to be clamped is received on the base 10, so that the plurality of abutting arms 40 are all located in the through holes 201 of the annular member to be clamped. Then, the moving shaft 30 is driven by the driving member 20 to move in the first axial direction Y1, so that the plurality of abutting arms 40 move back to back under the driving of the moving shaft 30 and abut against the inner peripheral side of the annular member to be clamped at intervals. In this way, the plurality of abutting arms 40 abut against the inner side wall of the annular member to be clamped in a back-to-back manner, so that the clamping device 100 can stably clamp the annular member to be clamped. Moreover, the plurality of abutting arms 40 can keep the abutting effect on the annular member to be clamped by continuously driving the moving shaft 30 along the first axial direction Y1 by the driving member 20.

With this arrangement, when the annular member to be clamped is the annular stator 200, the clamping device 100 can also be used for supporting the inner peripheral side of the annular stator 200 back by the plurality of supporting arms 40, so as to stably clamp the annular stator 200.

In addition, the axial movement of the moving shaft 30 along the first axial direction Y1 can drive the abutting arm 40 to move back to abut against the inner peripheral side of the annular member to be clamped, so that the clamping operation of the clamping device 100 on the annular member to be clamped is very simple and convenient, and the structure of the clamping device 100 is also very simple.

Alternatively, the plurality of retaining arms 40 are evenly distributed around the outer periphery of the moving shaft 30 around the axial direction of the moving shaft 30. Thus, when the clamping device 100 clamps the annular member to be clamped, the plurality of abutting arms 40 uniformly abut against the inner peripheral side of the annular member to be clamped, which helps to improve the stable clamping effect of the clamping device 100 on the annular member to be clamped.

As shown in fig. 2 to 4, the number of the holding arms 40 is three, and certainly, the number of the holding arms 40 may also be two, four or more, which is not limited herein.

Optionally, the base 10 is provided with a moving slot 101, and the moving shaft 30 is movably disposed in the moving slot 101 along the first axial direction Y1 and the second axial direction Y2, so as to improve the stability of the movement of the moving shaft 30 on the base 10.

In one embodiment, referring to fig. 4, the propping arm 40 includes an arm 41 and a hook 42 disposed on the arm 41.

It can be understood that the arm body 41 is a main structure of the holding arm 40, and the arm body 41 is movably disposed on the machine base 10. In the process that the moving shaft 30 moves along the first axial direction Y1 under the driving of the driving element 20, the arm bodies 41 of the plurality of abutting arms 40 can move back to back under the driving of the moving shaft 30 to abut against the inner peripheral side of the annular to-be-clamped member. When the moving shaft 30 moves in the second axial direction Y2, the arm bodies 41 of the plurality of abutting arms 40 can release the ring-shaped member to be clamped.

When the arm 41 abuts against the inner peripheral side of the annular clip to be clipped, the hook portion 42 hooks the annular clip to be clipped along the second axial direction Y2.

With such an arrangement, when the clamping device 100 clamps the annular to-be-clamped member, the arm bodies 41 of the plurality of abutting arms 40 abut against the inner peripheral side of the annular to-be-clamped member in a back direction, and the hook portions 42 of the plurality of abutting arms 40 hook the annular to-be-clamped member along the second axial direction Y2, so that the annular to-be-clamped member is limited between the hook portions 42 and the base 10 along the axial direction, thereby improving the clamping firmness and stability of the clamping device 100 on the annular to-be-clamped member. When the clamping device 100 is applied to clamp the ring stator 200, it is convenient to improve the stable winding effect of the ring stator 200.

Optionally, as shown in fig. 1, the annular to-be-clamped member is opened with a plurality of limiting grooves 202. When the arm bodies 41 of the plurality of abutting arms 40 abut against the inner peripheral side of the annular to-be-clamped member, the hook portion 42 hooks the annular to-be-clamped member and is limited in the limiting groove 202, so that the relative limitation between the abutting arms 40 and the annular to-be-clamped member is realized, and the clamping firmness and stability of the clamping device 100 on the annular to-be-clamped member are favorably improved.

In an embodiment, referring to fig. 3 and fig. 4, the holding arm 40 is slidably connected to the moving shaft 30, a direction of relative sliding between the holding arm 40 and the moving shaft 30 is perpendicular to the first axial direction Y1, and a portion of the moving shaft 30 for slidably connecting the holding arm 40 is tapered along the first axial direction Y1.

It is understood that the direction in which the retaining arm 40 and the moving shaft 30 slide relative to each other forms a direction greater than 0 ° and less than 90 ° with the first axial direction Y1.

It is understood that, in the first axial direction Y1, the outer diameter of the portion of the moving shaft 30 for slidably connecting the abutting arm 40 is gradually reduced.

Based on this, when the moving shaft 30 moves in the first axial direction Y1 under the driving of the driving member 20, the outer diameter of the portion of the moving shaft 30 for abutting against the abutting arm 40 gradually increases, so that the plurality of abutting arms 40 can gradually move back to back. And, at this time, the holding arm 40 is also connected with the moving shaft 30 in a sliding manner, so that the holding arm 40 can keep the connection relation with the moving shaft 30 in the process of gradually moving back, and the moving shaft 30 drives the plurality of holding arms 40 to move back. And, it is also convenient for the first moving shaft 30 to drive the plurality of abutting arms 40 to move towards each other when moving along the second axial direction Y2. It is understood that when the moving shaft 30 moves along the first axial direction Y1, the movement of the plurality of holding arms 40 can be decomposed into the movement of the holding arms 40 along the second axial direction Y2 with respect to the moving shaft 30, and the movement in the back direction. Accordingly, when the moving shaft 30 moves in the second axial direction Y2, the movement of the plurality of holding arms 40 can be decomposed into the movement of the holding arms 40 in the first axial direction Y1 with respect to the moving shaft 30, and the movement in the opposite direction.

By adopting the above technical scheme, the abutting arms 40 are connected with the moving shaft 30 in a sliding manner, so that the moving shaft 30 can drive the plurality of abutting arms 40 to move when moving along the first axial direction Y1 and the second axial direction Y2, and the plurality of abutting arms 40 abut against the annular to-be-clamped piece or release the annular to-be-clamped piece. Moreover, the abutting arms 40 are slidably connected with the moving shaft 30, so that the axial movement of the moving shaft 30 can be converted into the opposite movement or the back movement of the plurality of abutting arms 40, the clamping work and the releasing work of the clamping device 100 on the annular to-be-clamped piece are facilitated, and the clamping process of the clamping device 100 on the annular to-be-clamped piece is simplified.

In an embodiment, referring to fig. 3 to fig. 7, a plurality of first sliding grooves 301 are disposed on an outer peripheral side of the moving shaft 30, and the plurality of first sliding grooves 301 are disposed close to each other along the first axial direction Y1. It is understood that the first sliding grooves 301 are opened at the outer peripheral side of the moving shaft 30 around the first axial direction Y1, and the plurality of first sliding grooves 301 are close together along the first axial direction Y1, so that the portion of the moving shaft 30 for slidably connecting with the holding arm 40 is arranged in a tapered manner along the first axial direction Y1.

The abutting arm 40 is provided with a guide rail 411, and the guide rail 411 is respectively limited in the first sliding groove 301 along the depth direction and the width direction of the first sliding groove 301, and can be slidably arranged in the first sliding groove 301 along the length direction of the first sliding groove 301.

As shown in fig. 6 and 7, the length direction of the first sliding chute 301 and the first axial direction Y1 are not parallel and perpendicular, specifically, the direction a is shown schematically in the figure, the width direction of the first sliding chute 301 is shown schematically in the direction b, and the depth direction of the first sliding chute 301 is shown schematically in the direction c. The length direction, the width direction and the depth direction of the first sliding chute 301 are perpendicular to each other.

As shown in fig. 6, when the guide rail 411 is slidably disposed in the first sliding groove 301, the guide rail 411 is limited between two side walls of the first sliding groove 301 along the width direction of the first sliding groove 301, so that the guide rail 411 can be limited in the first sliding groove 301 along the width direction of the first sliding groove 301. And optionally, two sides of the first sliding slot 301 along the width direction are respectively provided with a blocking portion 311, when the guide rail 411 is slidably disposed in the first sliding slot 301, the guide rail 411 is limited between the bottom wall of the first sliding slot 301 and the blocking portion 311 along the depth direction of the first sliding slot 301, so that the guide rail 411 can be limited in the first sliding slot 301 along the depth direction of the first sliding slot 301.

By adopting the above technical scheme, the guide rail 411 of the abutting arm 40 is limited in the first sliding groove 301 along the depth direction and the width direction of the first sliding groove 301, so that the relative limitation of the abutting arm 40 and the moving shaft 30 is realized, and thus, the moving shaft 30 is convenient to drive the abutting arm 40. When the moving shaft 30 moves along the first axial direction Y1, the moving shaft 30 drives the plurality of abutting arms 40 to move back to back, and at this time, the guide rails 411 of the plurality of abutting arms 40 can respectively slide along the length directions of the plurality of first sliding grooves 301, so that the abutting arms 40 can adapt to the abutting work of the moving shaft 30 on the abutting arms 40, and the moving shaft 30 can drive the plurality of abutting arms 40 to move back to back, so that the plurality of abutting arms 40 abut against the inner peripheral side of the annular to-be-clamped piece back to back. And, it is also convenient for the moving shaft 30 to drive the plurality of holding arms 40 to move towards each other to release the ring-shaped member to be clamped. This arrangement facilitates the conversion of the movement shaft 30 in the first axial direction Y1 into the back-facing movement of the plurality of holding arms 40, and the conversion of the movement shaft 30 in the second axial direction Y2 into the facing movement of the plurality of holding arms 40.

Alternatively, in other embodiments, the first sliding groove 301 may also be disposed on the holding arm 40, and accordingly, the guide rail 411 is disposed on the moving shaft 30.

Alternatively, as shown in fig. 6 and 7, the plurality of first sliding grooves 301 are arranged close to each other along the first axial direction Y1, and the guide rails 411 of the plurality of abutting arms 40 are also arranged close to each other gradually along the first axial direction Y1, so that the guide rails 411 can slide along the first sliding grooves 301 well, which helps to improve the flexibility and stability of the movement of the plurality of abutting arms 40 in the opposite direction and the movement of the plurality of abutting arms in the opposite direction.

In an embodiment, referring to fig. 6 and fig. 7, the end of the guide rail 411 is provided with a limiting portion 412, and the limiting portion 412 is configured to be limited outside one end of the first sliding chute 301 along the first axial direction Y1 after the moving shaft 30 moves along the first axial direction Y1.

It is understood that when the moving shaft 30 moves along the first axial direction Y1, the holding arm 40 moves relative to the moving shaft 30, and the movement of the holding arm 40 relative to the moving shaft 30 can be decomposed into the backward movement of the plurality of holding arms 40 and the movement of the holding arm 40 relative to the moving shaft 30 along the second axial direction Y2. After the moving shaft 30 moves along the first axial direction Y1, the limiting portion 412 of the supporting arm 40 is limited at one end of the first sliding groove 301 along the first axial direction Y1. In this way, the holding arm 40 can be restricted from moving continuously relative to the moving shaft 30, that is, the plurality of holding arms 40 are restricted from moving back, and at the same time, the holding arm 40 is restricted from moving relative to the moving shaft 30 along the second axial direction Y2, so that the holding arm 40 can be prevented from being separated from the moving shaft 30, and the plurality of holding arms 40 can be driven to move towards each other by the following moving shaft 30.

The limiting portion 412 is disposed at a terminal of the guide rail 411 along the first axial direction Y1. Moreover, after the moving shaft 30 moves along the first axial direction Y1, the limiting portion 412 is limited at the end of the first sliding groove 301 along the first axial direction Y1, that is, the limiting portion 412 abuts against the moving shaft 30, so as to limit the moving shaft 30 to continue to move along the first axial direction Y1 relative to the abutting arm 40.

Specifically, as shown in fig. 7, the guide rail 411 and the stopper 412 are both provided on the arm body 41 of the holding arm 40.

In an embodiment, referring to fig. 2, fig. 3 and fig. 8, the base 10 is provided with a plurality of second sliding slots 102 distributed at intervals, and each of the supporting arms 40 is slidably disposed in each of the second sliding slots 102.

The plurality of second sliding grooves 102 are circumferentially distributed on the base 10 around the axial direction of the moving shaft 30, so that the plurality of abutting arms 40 distributed on the periphery of the moving shaft 30 can be slidably arranged in the plurality of second sliding grooves 102 in a one-to-one correspondence manner.

By adopting the above technical scheme, the abutting arms 40 can slide along the second sliding grooves 102, so that the moving direction of the abutting arms 40 is limited, and the plurality of abutting arms 40 can more uniformly abut against the inner peripheral side of the annular to-be-clamped piece when moving back to back, thereby being beneficial to improving the clamping stability and firmness of the clamping device 100 on the annular to-be-clamped piece.

Optionally, the second sliding slot 102 communicates with the moving slot 101, so as to facilitate the sliding connection between the moving shaft 30 and the abutting arm 40.

In one embodiment, referring to fig. 4, the driving member 20 is an elastic member, and the elastic member abuts against the base 10 and the moving shaft 30. It can be understood that the elastic member can drive the moving shaft 30 to move along the first axial direction Y1 when resetting, so that the plurality of abutting arms 40 move back to abut against the inner peripheral side of the annular member to be clamped. And, the moving shaft 30 can move along the second axial direction Y2 under the action of the external force, and at this time, the elastic member is in a force accumulation state under the action of the moving shaft 30.

The elastic element can be a spring, a tension spring, a spring plate and other elastic structures.

By adopting the above technical scheme, the moving shaft 30 is driven by the elastic member, so that the structure of the clamping device 100 is simplified, and the clamping operation of the clamping device 100 on the annular to-be-clamped member is simplified.

Of course, in other embodiments, the driving member 20 may also be a linear motor, a combination of a motor and a screw mechanism, or other driving mechanisms capable of driving the moving shaft 30 to move along the first axial direction Y1 or the second axial direction Y2.

In one embodiment, referring to fig. 4 and 5, the moving shaft 30 includes a shaft body 31 and a driving arm 32. The shaft body 31 is a main body portion of the moving shaft 30, and an axial direction of the shaft body 31 is parallel to the first axial direction Y1 and the second axial direction Y2.

The shaft 31 is movably disposed on the base 10 and is capable of moving relative to the base 10 along a first axial direction Y1 and a second axial direction Y2, respectively. The shaft body 31 can be driven by the driving member 20 to move the shaft body 31 along the first axial direction Y1 to drive the plurality of holding arms 40 to move back to back.

The driving arm 32 is disposed on the shaft body 31 and exposed outside the housing 10 to drive the shaft body 31 to move along the second axial direction Y2 under an external force.

By adopting the above technical scheme, the driving arm 32 can drive the shaft body 31 to move along the second axial direction Y2 under an external force, so that the plurality of abutting arms 40 move in opposite directions, so that the annular to-be-clamped piece is conveniently received on the base 10 or the annular to-be-clamped piece is conveniently taken away from the base 10. And, the shaft body 31 can automatically move along the first axial direction Y1 under the driving of the driving element 20, so as to drive the plurality of abutting arms 40 to move back to abut against the inner peripheral side of the annular to-be-clamped member.

In one embodiment, referring to fig. 2 and 3, the base 10 is provided with a positioning shaft 50 spaced apart from the holding arm 40, and the positioning shaft 50 is used for inserting and matching with the annular member to be clamped.

By adopting the technical scheme, when the annular to-be-clamped piece needs to be clamped, the annular to-be-clamped piece is connected to the machine base 10, the positioning shaft 50 on the machine base 10 is in inserting fit with the annular to-be-clamped piece, so that the annular to-be-clamped piece is conveniently positioned on the clamping device 100, and the clamping device 100 is convenient for clamping the annular to-be-clamped piece.

A second aspect of the embodiments of the present application provides a winding machine, including a winding device and a clamping device 100, where the winding device is used for winding a stator winding clamped by the clamping device 100.

By adopting the above technical scheme, the clamping device 100 can be used for supporting the inner peripheral side of the annular stator 200 in a back direction through the plurality of supporting arms 40 so as to realize stable clamping work on the annular stator 200, and thus, the winding device of the winding machine can perform stable clamping work on the annular stator 200, and the stable winding effect of the annular stator 200 is facilitated to be realized.

It can be understood that, when the winding machine works, the driving arm 32 of the moving shaft 30 is driven by an external force, so that the driving arm 32 drives the shaft body 31 of the moving shaft 30 to move along the second axial direction Y2, and the plurality of abutting arms 40 are driven by the shaft body 31 to move towards each other. Then, the annular stator 200 is received on the base 10, so that the annular stator 200 is inserted into the positioning shaft 50 of the base 10, and the plurality of holding arms 40 are located in the through holes 201 of the annular stator 200. Then, the external force on the driving arm 32 is removed, the shaft body 31 moves along the first axial direction Y1 under the driving of the driving element 20, so that the plurality of abutting arms 40 move back to back under the driving of the shaft body 31, the plurality of abutting arms 40 abut against the inner peripheral side of the annular stator 200, and hook the annular stator 200 along the second axial direction Y2, that is, the annular stator 200 is stably clamped by the clamping device 100. Then, the winding device performs a winding operation of the ring stator 200 held by the holding device 100. Finally, the external force is applied to the driving arm 32 again to make the shaft body 31 move along the second axial direction Y2 under the driving of the driving arm 32, so that the plurality of abutting arms 40 move towards each other to remove the clamping of the ring stator 200 by the clamping device 100, and the ring stator 200 that has completed the winding work is taken away from the base 10, that is, the clamping and winding work of the ring stator 200 is completed.

Optionally, as shown in fig. 1, the clamping device 100 further includes a wire passing member 60, and before the annular stator 200 is wound, the winding device may wind the wire around the wire passing member 60, so that an end of the wire is fixed to the wire passing member 60, and thus, the winding work of the wire on the annular stator 200 is facilitated.

Optionally, as shown in fig. 1, the wire passing member 60 has a wire passing groove 601, and the wire passing groove 601 is used for the wire body to pass through, so that the wire body is fixed on the wire passing member 60.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims (10)

1. A clamping device is used for clamping an annular to-be-clamped piece; characterized in that, the clamping device includes:

the stand is used for receiving the annular to-be-clamped piece;

the moving shaft is arranged on the base and can move relative to the base along a first axial direction and a second axial direction respectively, and the first axial direction and the second axial direction are opposite;

the driving piece is arranged on the base and is used for driving the moving shaft to move along the first axial direction at least;

the plurality of abutting arms are arranged around the periphery of the moving shaft in a surrounding manner and movably arranged on the base; the moving shaft can drive the abutting arms to move back to back when moving along the first axial direction, so that the abutting arms can abut against the inner peripheral side of the annular to-be-clamped piece at intervals; the plurality of abutting arms can move oppositely when the moving shaft moves along the second axial direction so as to release the annular to-be-clamped piece.

2. The clamping device of claim 1, wherein said retaining arm comprises:

the arm body is movably arranged on the base and can abut against the inner peripheral side of the annular to-be-clamped piece or loosen the annular to-be-clamped piece;

the hook part is arranged on the arm body and can hook the annular to-be-clamped piece along the second axial direction when the arm body abuts against the inner peripheral side of the annular to-be-clamped piece.

3. The clamping device of claim 1, wherein the holding arm is slidably connected to the moving shaft, a direction of relative sliding between the holding arm and the moving shaft is not parallel to the first axial direction and is not perpendicular to the first axial direction, and a portion of the moving shaft for slidably connecting the holding arm is tapered along the first axial direction.

4. The clamping device as claimed in claim 3, wherein a plurality of first sliding grooves are formed on an outer peripheral side of the moving shaft, and are arranged close to each other in the first axial direction; the supporting arm is provided with a guide rail, the guide rail is limited in the first sliding groove along the depth direction and the width direction of the first sliding groove respectively, and the guide rail can be arranged in the first sliding groove in a sliding manner along the length direction of the first sliding groove.

5. The clamping device as claimed in claim 4, wherein the end of the guide rail is provided with a position-limiting portion for limiting the position of the guide rail beyond an end of the first sliding groove after the moving shaft moves in the first axial direction.

6. The clamping device as claimed in any one of claims 1 to 5, wherein the base defines a plurality of second slots spaced apart from each other, and each of the support arms is slidably disposed in each of the second slots.

7. The clamping device as claimed in any one of claims 1 to 5, wherein said drive member is a resilient member, said resilient member abutting said housing and said movable shaft.

8. The clamping device as claimed in any one of claims 1 to 5, wherein said movable shaft comprises a shaft body and a driving arm, said shaft body being movably disposed in said housing in said first axial direction and said second axial direction, respectively, and being adapted to be driven in said first axial direction by said driving member; the driving arm is arranged on the shaft body and exposed outside the machine base so as to drive the shaft body to move along the second axial direction under the action of external force.

9. The clamping device as claimed in any one of claims 1 to 5, wherein the base is provided with a positioning shaft spaced from the holding arm, the positioning shaft being adapted to engage with the annular member to be clamped.

10. A winding machine comprising a winding device for winding a stator held by the holding device, and the holding device according to any one of claims 1 to 9.

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