Winding limiting device and winding machine

Abstract

The invention discloses a winding limiting device and a winding machine, and relates to the technical field of motor manufacturing, the winding limiting device comprises a placing assembly and a limiting matching assembly, the placing assembly is provided with a winding position for winding an annular workpiece, and the placing assembly comprises a winding table and a first rotation driving part; the winding table is used for limiting and placing an annular workpiece to be wound, the first rotary driving part is used for driving the winding table to rotate in the axial direction, the limiting matching assembly comprises a base and a limiting table rotationally installed on the base, and when the placing assembly is located at the winding position, the limiting table is driven by the first rotary driving part to rotate in the axial direction. The limiting table and the winding table are oppositely arranged in the axial direction of the annular workpiece, and the limiting table is used for limiting and abutting against the annular workpiece and can synchronously rotate along with the winding table when abutting against the annular workpiece; according to the invention, the limiting and fixing effect during winding of the annular stator core can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of motor manufacturing, and in particular to a winding limiting device and a winding machine. Background Art

[0002] Conventional straight stator jigs, with upper and lower parts respectively securing the stator at both ends, ensure secure positioning during winding. However, in related technologies, when the straight stator is bent into a circular shape for winding, the jig rotates with the stator, making it difficult to effectively secure the stator.

[0003] The above content is only used to assist in understanding the technical solution of the invention and does not constitute an admission that the above content is prior art. Summary of the Invention

[0004] The main purpose of the present invention is to provide a winding limit device and a winding machine, aiming to improve the limiting and fixing effect when winding the annular stator core.

[0005] To achieve the above-mentioned purpose, the winding limiting device proposed in the present invention includes:

[0006] a placement assembly having a winding position for winding an annular workpiece, the placement assembly comprising a winding table and a first rotary drive member, the winding table being used to limit the placement of the annular workpiece to be wound, the first rotary drive member being used to drive the winding table to rotate axially; and

[0007] A limit fitting assembly includes a base and a limit platform rotatably mounted on the base. When the placement assembly is in the winding position, the limit platform and the winding platform are arranged relative to each other along the axial direction of the annular workpiece. The limit platform is used to limit and abut the annular workpiece, and can rotate synchronously with the winding platform when abutting the annular workpiece.

[0008] In one embodiment, the limit platform includes a base, a first limit portion and a second limit portion, the first limit portion and the second limit portion are arranged on the base, the first limit portion is used to limit the axial movement of the annular workpiece relative to the base, and the second limit portion is used to limit the axial rotation of the annular workpiece relative to the base.

[0009] In one embodiment, the first limiting portion is configured as a plurality of clamping claws arranged around the outer periphery of the base, and the plurality of clamping claws are used to abut and cooperate with the side of the annular workpiece facing the base.

[0010] In one embodiment, an escape space is formed between adjacent clamping jaws, and each of the escape spaces is used to escape the winding portion of the annular workpiece.

[0011] In one embodiment, each of the clamping jaws has a clamping surface that is inclined relative to the axis of the base, and the clamping surface has a first end close to the base and a second end away from the base. The clamping surface is arranged away from the rotation axis of the limit platform from the first end to the second end.

[0012] In one embodiment, the second limiting portion is configured as a first anti-deflection member, and at least one first anti-deflection member is provided. The first anti-deflection member is provided on a side of the base close to the annular workpiece, and the first anti-deflection member is used to be plugged into and cooperated with a mold for mounting the annular workpiece to limit the rotation of the annular workpiece relative to the base.

[0013] In one embodiment, the limiting cooperation component further includes a first movable driving member drivingly connected to the base. When the placement component is in the winding position, the first movable driving member is used to drive the limiting platform to approach or move away from the winding platform through the base.

[0014] In one embodiment, a second anti-deflection member is provided on the side of the winding table facing the limiting fitting assembly, and the second anti-deflection member is used to engage with the mold for mounting the annular workpiece to limit the deflection of the annular workpiece relative to the winding table.

[0015] In one embodiment, the limiting fitting assembly further includes a connecting assembly, wherein the connecting assembly connects the limiting platform and the base, and the connecting assembly can drive the limiting platform to elastically expand and contract along the axial direction of the annular workpiece.

[0016] In one embodiment, the connecting assembly includes a rotating shaft and an elastic member, one end of the rotating shaft is fixedly connected to the limit platform, the other end of the rotating shaft is rotatably connected to the base and can be axially extended and retracted relative to the base, and the elastic member elastically connects the limit platform and the base.

[0017] In one embodiment, the connecting assembly further comprises a deflection limiting member, the deflection limiting member being provided at an end of the rotating shaft away from the limiting platform, the base having a limiting groove, the deflection limiting member being engaged with the limiting groove;

[0018] The limit platform has a limit position abutting against the annular workpiece, and a separation position spaced apart from the annular workpiece. When the limit platform is in the limit position, the deflection limit member is located on a side of the limit groove away from the limit platform. When the limit platform is in the separation position, the deflection limit member is clamped in the limit groove.

[0019] In one embodiment, a limiting seat is provided on a side of the base away from the limiting platform, and the limiting groove is provided on the limiting seat.

[0020] In one embodiment, the winding limit device also includes a second movable drive member, and the placement component also has a loading and unloading position for loading and / or unloading, and the second movable drive member is used to drive the winding limit device to move back and forth between the winding position and the loading and unloading position.

[0021] The present invention also provides a winding machine, comprising:

[0022] The winding limiting device as described above;

[0023] A winding device, the winding device is used to wind wire on an annular workpiece;

[0024] A transfer table for placing the annular workpiece to be wound and the annular workpiece after winding; and

[0025] The loading and unloading device is used to move the annular workpiece to be wound from the transfer platform to the placing component of the winding limit device when the placing component of the winding limit device is in the loading and unloading position, and is used to move the annular workpiece after winding from the placing component to the transfer platform.

[0026] In one embodiment, the loading and unloading device includes a support frame and two clamping members provided on opposite sides of the support frame, one of the two clamping members is used to clamp the annular workpiece after winding, and the other is used to clamp the annular workpiece to be wound.

[0027] In one embodiment, the loading and unloading device also includes a lifting drive and a second rotating drive, the second rotating drive is used to drive the support frame to rotate so that one of the two clamping members is opposite to the transfer table and the other is opposite to the winding table, and the lifting drive is used to drive the support frame winding table to move axially so that one of the two clamping members clamps the annular workpiece of the transfer table and the other clamps the annular workpiece of the winding table.

[0028] The technical solution of the present invention is to set a placing component including a winding table and a first rotating driving component that drives the winding table to rotate axially, and to place the annular workpiece to be wound by limiting the position of the winding table, and to set a limiting matching component. When the placing component is in the winding position, on the one hand, the limit table of the limiting matching component can be set axially relative to the winding table, and the limit table can be limited and abutted with the annular workpiece, so that both axial sides of the annular workpiece are effectively limited, preventing the annular workpiece from swinging with the line and being unable to be effectively fixed during winding. On the other hand, the limit table is rotatably mounted on the base, and when the annular workpiece rotates driven by the winding table, the limit table can rotate synchronously with the winding table, so that the annular workpiece can still be effectively fixed by the winding table and the limit table when the winding position is rotated to adjust the winding position. When the annular workpiece is configured as an annular stator core, the limiting and fixing effect of the annular stator core during winding can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0030] Figure 1 A structural schematic diagram of an embodiment of a stator winding production line provided by the present invention;

[0031] Figure 2 A schematic structural diagram of an embodiment of a winding machine provided by the present invention;

[0032] Figure 3 A schematic structural diagram of an embodiment of a winding limit device provided by the present invention;

[0033] Figure 4 for Figure 3 A schematic structural diagram of an embodiment of a middle limit fitting assembly;

[0034] Figure 5 for Figure 4 Schematic diagram of the partial structure of the middle limit matching component;

[0035] Figure 6 for Figure 4 A schematic structural diagram of an embodiment of a middle limit platform;

[0036] Figure 7 for Figure 4 A structural diagram of an embodiment of a connecting component;

[0037] Figure 8 for Figure 3A schematic structural diagram of an embodiment of a winding table;

[0038] Figure 9 for Figure 2 A schematic structural diagram of an embodiment of a loading and unloading device;

[0039] Figure 10 1 is a schematic structural diagram of an embodiment of an annular stator;

[0040] Figure 11 Schematic diagram of the structure of an embodiment of an annular stator core;

[0041] Figure 12 Schematic diagram of the coordination between the limit platform and the annular stator core.

[0042] Description of Figure Numbers:

[0043] 1000. Stator winding production line;

[0044] 100. Winding machine;

[0045] 10. Winding limit device; 11. Placement assembly; 111. Winding platform; 111a. Second anti-deflection member; 111a1. First sub-anti-deflection member; 111a2. Second sub-anti-deflection member; 112. First rotary drive member; 12. Limiting and matching assembly; 121. Base; 121a. Limiting groove; 122. Limiting platform; 1221. Base; 1222. First limiting portion; 1222a. Clamping surface; 1223. Second limiting portion; 124. First movable drive member; 125. Connecting assembly; 1251. Rotating shaft; 1252. Elastic member; 1253. Deflection limit member; 1254. Bearing member; 1255. Sheath; 1211. Limiting seat; 13. Second movable drive member;

[0046] 20. Winding device; 30. Loading and unloading device; 31. Support frame; 32. Clamping member; 33. Lifting drive member; 34. Second rotary drive member; 40. Protective device; 50. Tensioning device; 60. Wire drum; 70. Wire cutting device;

[0047] 1a, annular workpiece; 1b, mold; 2, annular stator; 21, annular stator core; 211, sub-stator core; 2111, abutment surface; 211a, winding portion; 22, winding.

[0048] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0049] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0050] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0051] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0052] The traditional straight stator jig consists of two parts, the upper and lower parts, which respectively hold the two ends of the stator to ensure reliable positioning during product winding. In related technologies, when the straight stator core is bent reversely into a circular stator core for winding, the jig needs to rotate with the stator, making it difficult to effectively fix the stator.

[0053] The present invention provides a winding limiting device 10 .

[0054] See also Figures 3 to 12In one embodiment of the present invention, the winding limiting device 10 includes a placing component 11 and a limiting matching component 12, the placing component 11 has a winding position for winding the annular workpiece 1a, the placing component 11 includes a winding table 111 and a first rotating driving component 112, the winding table 111 is used to limit the placement of the annular workpiece 1a to be wound, the first rotating driving component 112 is used to drive the winding table 111 to rotate axially, the limiting matching component 12 includes a base 121 and a limiting table 122 rotatably mounted on the base 121, when the placing component 11 is in the winding position, the limiting table 122 and the winding table 111 are arranged relative to each other along the axial direction of the annular workpiece 1a, the limiting table 122 is used to limit the abutment against the annular workpiece 1a, and can rotate synchronously with the winding table 111 when abutting against the annular workpiece 1a.

[0055] In the present invention, the annular workpiece 1a can be an annular stator core 21 formed after reverse bending. The annular stator core 21 formed after reverse bending has multiple sub-stator cores 211. The multiple sub-stator cores 211 are connected in sequence on the inner side near the center of the circle and enclosed to form the annular stator core 21. The outer side of each sub-stator core 211 has a winding portion 211a. The winding portion 211a is located on the side of the sub-stator core 211 away from the center of the annular stator core 21, that is, the winding portion of the annular stator core 21 is set outward. When the annular stator core 21 is placed in the winding limit device 10, each sub-stator core 211 of the annular stator core 21 can change position with the rotation of the winding table 111.

[0056] The winding limit device 10 of the present invention can be used as a component of the winding machine 100, wherein the winding machine 100 also includes a winding device 20, which is used to wind on the winding portion 211a of each sub-stator core 211. Since the winding platform 111 can be driven to rotate axially by the first rotating drive member 112, the winding portion 211a of each sub-stator core 211 can be wound toward the winding device 20.

[0057] The winding table 111 can be axially oriented in the up-down direction. The winding table 111 can be provided with a clamping structure to clamp and limit the non-winding portion of the annular stator core 21, so that the annular stator core 21 can be limited and placed on the winding table 111. Alternatively, the winding table 111 can be provided with a plug-in limiting structure to limit the mold 1b for mounting the annular stator core, so that the annular stator core 21 can be limited and placed on the winding table 111. Alternatively, the winding table 111 can limit the annular stator core at the same time in the above two ways. It is understandable that, similar to the winding table 111, the limiting table 122 can also adopt the above-mentioned limiting structure.

[0058] In addition, since the annular stator core 21 is driven by the winding when winding on the winding portion 211a, and is subjected to the transmission force moving axially, the limiting matching component 12 moves axially, so that the limiting platform 122 is in limiting contact with the annular stator core 21, which can prevent the annular stator core 21 from being unable to be effectively limited on the winding platform 111 during winding, and when the limiting platform 122 is in contact with the annular workpiece 1a, the limiting platform 122 can rotate with the rotation of the annular stator core 21, without affecting the limiting effect on the annular stator core 21, avoiding relative deflection of the annular stator core 21 and the limiting platform 122, resulting in the annular stator core 21 being not firmly fixed or the annular stator core 21 being damaged. When the winding portion 211a toward the winding device 20 is wound to form the winding 22, the first rotating drive member 112 drives the winding table 111 to rotate axially, adjusting the winding portion 211a of the next unwound sub-stator core 211 toward the winding device 20 for winding. When the winding table 111 drives the annular stator core 21 to complete one circle, the winding portion 211a of each sub-stator core 211 of the annular stator core 21 is wound, and the winding of the annular stator core 21 is completed to form the annular stator 2.

[0059] The technical solution of the present invention is to set a placement component 11 including a winding table 111 and a first rotating driving member 112 for driving the winding table 111 to rotate axially, and to place the annular workpiece 1a to be wound by limiting the position of the winding table 111, and to set a limiting matching component 12. When the placement component 11 is in the winding position, on the one hand, the limiting table 122 of the limiting matching component 12 can be set axially relative to the winding table 111, and the limiting table 122 can be set to limit the position of the annular workpiece 1a, so that both axial sides of the annular workpiece 1a are The ring-shaped workpiece 1a is effectively limited to prevent it from swinging along with the wire during winding and being unable to be effectively fixed. On the other hand, a limit platform 122 is rotatably mounted on the base 121. When the ring-shaped workpiece 1a rotates driven by the winding table 111, the limit platform 122 can rotate synchronously with the winding table 111, so that the ring-shaped workpiece 1a can still be effectively fixed by the winding table 111 and the limit platform 122 when rotating to adjust the winding position. When the ring-shaped workpiece 1a is configured as an annular stator core 21, the limiting and fixing effect of the annular stator core 21 during winding can be improved.

[0060] like Figure 5 、 Figure 6 、 Figure 12As shown, in one embodiment, the limit platform 122 includes a base 1221, a first limit portion 1222 and a second limit portion 1223, the first limit portion 1222 and the second limit portion 1223 are arranged on the base 1221, the first limit portion 1222 is used to limit the axial movement of the annular workpiece 1a relative to the base 1221, and the second limit portion 1223 is used to limit the axial rotation of the annular workpiece 1a relative to the base 1221.

[0061] Among them, the base 1221 is used to install the first limiting portion 1222 and the second limiting portion 1223. The first limiting portion 1222 can axially abut against the side of the annular workpiece 1a away from the winding table 111. When the other side of the annular workpiece 1a is limited, both axial sides of the annular workpiece 1a are limited, thereby preventing the annular workpiece 1a from deflecting up and down during winding. The second limiting portion 1223 can be axially inserted into the annular cavity of the annular workpiece 1a and abut against the non-annular inner wall of the annular cavity. When the annular workpiece 1a rotates with the winding table 111 to switch the winding position, the limiting table 122 can rotate synchronously with the annular workpiece 1a without affecting the position switching of the annular workpiece 1a.

[0062] The first limiting portion 1222 and the second limiting portion 1223 are further described below. Figure 5 、 Figure 6 、 Figure 12 In one embodiment, the first limiting portion 1222 is configured as a plurality of clamping claws arranged around the outer periphery of the base 1221 , and the plurality of clamping claws are used to abut and cooperate with the side of the annular workpiece 1a facing the base 1221 .

[0063] Among them, the clamps can be arranged around the base 1221 at even intervals. It can be understood that when multiple clamps are arranged to abut against the side of the annular workpiece 1a facing the base 1221, the side of the annular workpiece 1a facing the base 1221 can be evenly stressed, which is conducive to maintaining the force balance of the annular workpiece 1a.

[0064] Specifically, the clamp may include a first clamp portion and a second clamp portion that are bent and connected. The first clamp portion is arranged at the base 1221, and the second clamp portion abuts against the annular workpiece 1a. When the annular workpiece 1a is configured as an annular stator core 21, in order to prevent the second clamp portion from pressing the annular stator core 21 and causing damage to the winding 22 on the annular stator core 21, an abutment surface 2111 can be provided between two adjacent sub-stator cores 211, which abuts and cooperates with the second clamp portion, thereby preventing damage to the annular workpiece 1a.

[0065] How to prevent the winding 22 from being damaged is further described below. Optionally, an escape space is formed between adjacent clamping jaws, and each of the escape spaces is used to escape the winding portion 211 a of the annular workpiece 1 a.

[0066] It can be understood that the distance between two adjacent clamping jaws is not less than the maximum width of the winding 22 formed after the winding portion 211a is wound. This can prevent the clamping jaws from directly pressing down on the winding portion 211a of the annular workpiece 1a, causing damage to the winding portion and affecting the winding work performed on the winding portion 211a.

[0067] Optionally, each of the clamping jaws has a clamping surface 1222a that is inclined relative to the axis of the base 1221, and the clamping surface 1222a has a first end close to the base 1221 and a second end away from the base 1221. The clamping surface 1222a is arranged from the first end to the second end away from the rotation axis of the limit platform 122.

[0068] With such arrangement, when the clamping claw contacts the annular stator core 21, the second end farther from the rotation axis of the limit platform 122 approaches the annular stator core 21 first, and the first end farther from the rotation axis of the limit platform 122 approaches the annular stator core 21 later. Since the annular stator core is formed by reverse bending a straight stator core, there may be poor bending consistency, and the bending amplitudes of various parts of the annular stator core may be inconsistent. By gradually reducing the distance between the clamping surface 1222a and the annular stator core, the annular stator core is clamped, which can avoid inconsistent bending of the annular stator core and inaccurate clamping, thereby enabling the first limiting portion 1222 to accurately abut and cooperate with the annular workpiece.

[0069] In addition, the abutment surface 2111 between two adjacent sub-stator cores 211 may be arranged to form an acute angle with the axis of the annular stator core 21, and a clamping surface 1222a may be provided to abut and cooperate with the abutment surface 2111. In this way, when the limiting platform 122 abuts and cooperates with the annular stator core 21 along the axial direction, the second clamping claw portion can not only press the annular stator core 21 along the axial direction, but also press the annular stator core 21 radially inward, thereby preventing each sub-stator core 211 of the annular stator core 21 from expanding outward and causing deformation of the annular stator core 21 during winding.

[0070] like Figure 5 、 Figure 6 、 Figure 12 In one embodiment, the second limiting portion 1223 is configured as a first anti-deflection member, and the first anti-deflection member is at least one. The first anti-deflection member is arranged on the side of the base 1221 close to the annular workpiece 1a, and the first anti-deflection member is used to be plugged into and matched with the mold 1b on which the annular workpiece 1a is installed to limit the rotation of the annular workpiece 1a relative to the base 1221.

[0071] It is understood that when the annular workpiece 1a is configured as an annular stator core 21, a corresponding mold 1b is required to support and fix the annular stator core 21. The mold 1b can be disposed in the annular inner cavity of the annular stator core 21 to support the annular stator core. The mold 1b can also limit the outer side of the annular stator core to prevent the annular stator core from expanding and deforming outward.

[0072] In the above embodiment, the first anti-deflection member is plugged into and engaged with the mold 1b, so that the side wall of the first anti-deflection member abuts against the inner wall of the mold 1b. When the mold 1b rotates with the annular stator core 21, the first anti-deflection member can rotate with the mold 1b through the engagement of its side wall with the inner wall of the mold 1b, thereby driving the limit platform 122 to rotate, thereby limiting the rotation of the annular workpiece 1a relative to the base 1221. The first anti-deflection member can be configured as a latch structure, and multiple first anti-deflection members can be provided, each abutting against multiple inner walls of the mold 1b. This ensures that the force on the annular workpiece 1a is balanced when limiting the rotation of the annular workpiece 1a relative to the base 1221.

[0073] like Figure 3 、 Figure 4 As shown, in one embodiment, the limiting fitting assembly 12 further includes a first movable driving member 124 drivingly connected to the base 121 , and the first movable driving member 124 is used to drive the limiting platform 122 to approach or move away from the winding platform 111 through the base 121 .

[0074] Among them, the first movable driving member 124 can be configured to drive a cylinder connected to the base 121, and the cylinder can drive the base 121 to reciprocate along the axial direction of the annular workpiece, approaching or moving away from the base 121. Since the limit platform 122 can be rotatably installed on the base 121, it can drive the base 121 to reciprocate along the axial direction of the annular workpiece 1a, thereby driving the limit platform 122 to reciprocate along the axial direction of the annular workpiece 1a, approaching or moving away from the winding table 111. Alternatively, in order to facilitate the loading of the annular workpiece 1a on the winding table 111, the first movable driving member 124 can also be configured as two cylinders, and the driving strokes of the two cylinders are cross-arranged. One group drives the base 121 to reciprocate along the axial direction of the winding table 111, and the other group drives the base 121 to reciprocate along the radial direction of the winding table 111. When loading the winding table 111, sufficient loading and unloading space can be reserved for the loading and unloading mechanisms of the winding machine 100, which is convenient for reserving space.

[0075] like Figure 8 、 Figure 11As shown, a second anti-deflection member 111a is provided on the side of the winding table 111 facing the limiting fitting assembly 12. The second anti-deflection member 111a is used to be plugged into and fitted with the mold 1b for mounting the annular workpiece 1a to limit the deflection of the annular workpiece 1a relative to the winding table 111.

[0076] Among them, the second anti-deflection member 111a can be set as a first sub-anti-deflection member 111a1 and a second sub-anti-deflection member 111a2, the second sub-anti-deflection member 111a2 can be eccentrically set at the rotation center of the winding table 111, the mold 1b has a first insertion groove that is plugged into and matched with the first sub-anti-deflection member 111a1, and a second insertion groove that is plugged into and matched with the second sub-anti-deflection member 111a2, the second insertion groove can extend along the axial direction of the annular workpiece 1a, and be eccentrically set at the axis center of the annular workpiece 1a, so that when the annular workpiece 1a is placed on the winding table, the annular workpiece 1a can be prevented from moving radially along the winding table 111 and the annular workpiece 1a can be prevented from rotating axially around the winding table 111.

[0077] like Figure 4 、 Figure 5 As shown, in one embodiment, the limiting fitting assembly 12 further includes a connecting assembly 125, which connects the limiting platform 122 and the base 121, and the connecting assembly 125 can drive the limiting platform 122 to elastically expand and contract along the axial direction of the annular workpiece 1a.

[0078] The connecting assembly 125 can simultaneously drive the limit platform 122 to rotate relative to the base 121. It is understandable that when the placement assembly 11 is in the winding position, the first movable driving member 124 drives the base 121 to move, thereby driving the limit platform 122 to move toward the winding table 111. When abutting against the annular workpiece, the connection assembly 125 is provided to drive the limit platform 122 to elastically expand and contract along the axial direction of the annular workpiece 1a, thereby preventing the limit platform 122 from rigidly colliding with the annular workpiece 1a and causing damage to the annular workpiece 1a.

[0079] At the same time, when the annular workpiece 1a is configured as an annular stator core 21, the annular stator core 21 is subjected to a force moving in the axial direction under the winding drive of the winding device 20 of the winding machine 100. The limit platform 122 is provided to elastically expand and contract in the axial direction through the connecting component 125, which can offset the force moving in the axial direction on the annular stator core 21, thereby buffering the winding force on the annular stator core 21.

[0080] Moreover, since the annular stator core is obtained by reverse bending the straight stator core, the annular stator core itself may have poor bending consistency, resulting in poor bending shape consistency of the annular stator core. In this case, the two axial side surfaces of the annular stator core may be uneven. By setting the connecting component 125, the limit platform 122 can be driven to elastically expand and contract along the axial direction of the annular workpiece 1a. When the two axial side surfaces of the annular stator core are uneven, the situation in which the local extrusion pressure on the annular stator core is excessive and the annular stator core is damaged can be avoided as much as possible.

[0081] The structure of the connecting component 125 is further described below. Figure 7 As shown, in one embodiment, the connecting assembly 125 includes a rotating shaft 1251 and an elastic member 1252, one end of the rotating shaft 1251 is fixedly connected to the limit platform 122, and the other end of the rotating shaft 1251 is rotatably connected to the base 121 and can be axially extended and retracted relative to the base 121, and the elastic member 1252 elastically connects the limit platform 122 and the base 121.

[0082] The elastic member 1252 is configured as a spring, which is sleeved on the rotating shaft 1251. The two ends of the spring can be connected to the base 121 and the limiting platform 122 respectively. The base 121 can be provided with a through hole for the rotating shaft 1251 to pass through. The end of the rotating shaft 1251 connected to the base 121 can be telescopically inserted into the through hole. In addition, the connecting assembly 125 can also include a bearing member 1254 for rotatably connecting the rotating shaft 1251, and the bearing member 1254 is provided on the base 121. Such an arrangement allows the limiting platform 122 to be rotatably connected to the base 121 via the rotating shaft 1251. The limiting platform 122 can be rotatably connected to the base 121 via the telescopic connection between the rotating shaft 1251 and the base 121, and the elastic member 1252 elastically connects the limiting platform 122 and the base 121, so that the limiting platform 122 can achieve elastic expansion and contraction relative to the base 121.

[0083] Optionally, the connecting assembly 125 further includes a sheath 1255, which is mounted on the outside of the rotating shaft 1251, and the elastic member 1252 is located within the sheath 1255. A clearance is provided between one end of the sheath 1255 and the base 121, and / or a clearance is provided between the other end of the sheath 1255 and the limiting platform 122. In this configuration, the sheath 1255 can wrap and protect the rotating shaft 1251 and the elastic member 1252, thereby preventing damage to the rotating shaft 1251 and the elastic member 1252.

[0084] like Figure 5 、 Figure 7As shown, in one embodiment, the connecting assembly 125 further includes a deflection limiting member 1253, which is provided at one end of the rotating shaft 1251 away from the limiting platform 122. The base 121 has a limiting groove 121a, and the deflection limiting member 1253 is engaged with the limiting groove 121a.

[0085] The limit platform 122 has a limit position abutting against the annular workpiece 1a, and a separation position spaced apart from the annular workpiece 1a. When the limit platform 122 is in the limit position, the deflection limit member 1253 is located on the side of the limit groove 121a away from the limit platform 122. When the limit platform 122 is in the separation position, the deflection limit member 1253 is clamped in the limit groove 121a.

[0086] In the above embodiment, the deflection limit member 1253 can be eccentrically arranged at one end where the rotating shaft 1251 is connected to the base 121. When the deflection limit member 1253 is engaged in the limit groove 121a, the limit groove 121a limits the rotation of the rotating shaft 1251, thereby limiting the rotation of the limit platform 122 relative to the base 121. When the limit platform 122 is in a separated position from the annular workpiece 1a, the limit platform 122 can be prevented from rotating relative to the base 121, resulting in the first limit portion 1222 and the second limit portion 1223 provided on the limit platform 122 being deflected, and after the winding table 111 is loaded, it cannot be aligned with the annular workpiece 1a.

[0087] The limiting platform 122 can be driven upward to a separated position by the first movable driving member 124. In this case, regardless of whether the placement assembly 11 is in the winding position or in other positions, the annular workpiece 1a located on the winding platform 111 is spaced apart from the limiting platform 122. This allows the limiting platform 122 to have a foolproof function, preventing the limiting platform 122 from being unable to effectively limit the annular workpiece 1a when pressing down on it, and also preventing the limiting platform 122 from causing damage to the annular workpiece 1a when pressing down on it.

[0088] like Figure 5 、 Figure 7 As shown, optionally, a limiting seat 1211 is provided on a side of the base 121 away from the limiting platform 122, and the limiting groove 121a is formed in the limiting seat 1211. This facilitates the setting of the limiting groove 121a for limiting engagement with the deflection limiting member 1253. Furthermore, in other embodiments, the limiting groove 121a may be formed directly on the base 121, which is not limited here.

[0089] In order to facilitate the setting of the deflection limit member 1253 on the rotating shaft 1251, a limit connecting member can also be set at the end of the rotating shaft 1251 away from the limit platform 122. The deflection limit member 1253 is set on one side of the limit connecting member, which can reduce the cost of setting the deflection limit member 1253 on the rotating shaft 1251. In addition, the diameter of the limit connecting member can be set to be larger than the rotating shaft 1251, so that the limit connecting member and the base 121 form a limit matching relationship to prevent the rotating shaft 1251 from separating from the base 121.

[0090] like Figure 2 、 Figure 3 As shown, in one embodiment, the winding limit device 10 also includes a second movable drive member 13, and the placement component 11 also has a loading and unloading position for loading and / or unloading, and the second movable drive member 13 is used to drive the winding limit device 10 to move back and forth between the winding position and the loading and unloading position.

[0091] In this way, the placement component 11 can be driven by the second movable drive member 13 to move from the winding position to the loading and unloading position when loading and / or unloading, so that the placement component 11 avoids the limiting fitting component 12, and avoids the limiting platform 122 of the limiting fitting component 12 being opposite to the winding table 111 of the placement component 11, resulting in the limiting fitting component 12 interfering with the loading and unloading device 30 of the winding machine 100 when loading and / or unloading the winding table 111.

[0092] Among them, the loading and unloading position can be used to place the annular workpiece 1a of the component 11 to be loaded and wound, or it can be used to place the annular workpiece 1a after the component 11 is unloaded and wound, or it can be used to place the annular workpiece 1a of the component 11 to be loaded and wound and the annular workpiece 1a after unloading and winding at the same time.

[0093] See also Figure 2 The present invention also proposes a winding machine 100, which includes a winding limit device 10, a transfer table 80, a winding device 20 and a loading and unloading device 30. The specific structure of the winding limit device 10 refers to the above embodiment. Since the present winding machine 100 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here. Among them, the winding device 20 is used to wind on the annular workpiece 1a, and the transfer table 80 is used to place the annular workpiece 1a to be wound and the annular workpiece 1a after winding. When the placement component 11 of the winding limit device 10 is in the loading and unloading position, the loading and unloading device 30 is used to move the annular workpiece 1a to be wound from the transfer table 80 to the placement component 11 of the winding limit device 10, and to move the annular workpiece 1a after winding from the placement component 11 to the transfer table 80.

[0094] The winding machine 100 further includes a frame, on which the winding device 20, the loading and unloading device 30, and the winding limiting device 10 are arranged. The winding device 20 and the loading and unloading device 30 can be arranged on both sides of the winding limiting device 10. The transfer platform 80 can be arranged on a side of the loading and unloading device 30 away from the winding limiting device 10.

[0095] When the annular workpiece 1a is configured as an annular stator core 21, during operation, the transfer table 80 moves the annular stator core 21 to the working range of the loading and unloading device 30, and the loading and unloading device 30 grabs the annular stator core 21 from the transfer table 80. At the same time, the placement component 11 moves from the winding position to the loading and unloading position, and the loading and unloading device 30 places the grabbed annular stator core 21 on the winding table 111 of the placement component 11. Then, the placement component 11 moves from the loading and unloading position to the winding position, and the limiting matching component 12 moves downward through the limiting table 122 driven by the first moving drive member 124, and abuts against the annular stator core 21 of the winding table 111, thereby limiting the annular stator core 21. Next, the winding device 20 starts to wind the annular stator core 21. At the same time, the first rotating drive member 112 drives the winding table 111 to rotate, changing the relative position of the annular stator core 21 and the winding device 20. After the annular stator core 21 is wound in a full circle to form the annular stator 2, the limit table 122 moves up and separates from the wound annular stator 2. The placement component 11 moves from the winding position to the loading and unloading position. The loading and unloading device 30 grabs the annular stator 2 from the winding table 111 and places it on the transfer table 80. At the same time, the loading and unloading device 30 grabs the annular stator core 21 from the transfer table 80 and places it on the limit table 122 to carry out the winding operation of the next group of annular stator cores 21.

[0096] The loading and unloading device 30 is further described below. Figure 9 As shown, the loading and unloading device 30 includes a support frame 31 and two clamping members 32 provided on opposite sides of the support frame 31. One of the two clamping members 32 is used to clamp the annular workpiece 1a after winding, and the other is used to clamp the annular workpiece 1a to be wound. In this way, the annular workpiece 1a to be wound and the annular workpiece 1a after winding can be grasped simultaneously, thereby improving the loading and unloading efficiency of the winding machine 100.

[0097] In addition, in order to further improve the working efficiency of the loading and unloading device 30, as Figure 9As shown, optionally, the loading and unloading device 30 also includes a lifting drive 33 and a second rotating drive 34, and the second rotating drive 34 is used to drive the support frame 31 to rotate so that one of the two clamping members 32 is opposite to the transfer table 80, and the other is opposite to the winding table 111. The lifting drive 33 is used to drive the axial movement of the winding table of the support frame 31, so that one of the two clamping members 32 clamps the annular workpiece of the transfer table 80, and the other clamps the annular workpiece of the winding table 111.

[0098] In this way, the support frame 31 can be driven to rotate by the second rotating drive member 34, so that the two clamping members 32 can be opposite to the transfer platform 80 and the winding platform 111 at the same time. When the support frame 31 is driven to descend by the lifting drive member 33, the two clamping members 32 can respectively clamp the annular workpiece 1a after winding and the annular workpiece 1a to be wound at the same time. After that, the second rotating drive member 34 can also drive the support frame 31 to rotate again, and the positions of the two clamping members 32 are reversed. When the support frame 31 is driven to descend by the lifting drive member 33, the two clamping members 32 can respectively place the annular workpiece 1a after winding on the transfer platform 80 and the annular workpiece 1a to be wound on the winding platform 111, so that loading and unloading can be carried out simultaneously, and the working efficiency of the loading and unloading device 30 is higher.

[0099] In addition, the winding machine 100 of the present invention may further include a tensioning device 50, a wire barrel 60, a wire cutting device 70, and a protective device 40. The wire barrel 60 is used to place the wire used for winding. When the annular workpiece 1a is configured as an annular stator core 21, the wire may be an enameled wire. The tensioning device 50 is disposed between the wire barrel 60 and the winding device 20 and is used to tension the enameled wire to ensure that the winding 22 formed on the annular stator core 21 is compact and not loose. The wire cutting device 70 may be disposed on the limiting mating assembly 12 of the winding limiting device 10, specifically on the side of the base 121 away from the limiting platform 122. The wire cutting device 70 is used to cut the wire and separate it from the winding 22 after the winding of the annular stator core 21 is completed. The protective device 40 can be set on the placement component 11 of the winding limit device 10, and specifically can be set on the peripheral side of the winding platform 111. The protective device 40 may include two protective plates, which are used to shield the sub-stator core 211 on both sides of the sub-stator core 211 opposite to the winding device 20, to prevent the winding device 20 from winding onto the sub-stator core 211 on both sides when operating, causing winding interference.

[0100] like Figure 1As shown, the present invention also provides a stator winding production line 1000, comprising a de-rounding machine 200, a winding machine 100, and a straightening machine 300. The de-rounding machine 200 is used to reversely bend a bar-shaped stator core into a ring-shaped stator core 21. The winding machine 100 is located on one side of the de-rounding machine 200 and is used to receive the ring-shaped stator core 21 and wind wire around the ring-shaped stator core 21 to form a ring-shaped stator 2. The straightening machine 300 is located on a side of the winding machine 100 away from the de-rounding machine 200 and is used to straighten the ring-shaped stator 2 to form a bar-shaped stator.

[0101] In the present invention, the stator winding production line 1000 further includes a transfer device 400, which is sequentially connected to the de-rounding machine 200, the winding machine 100 and the straightening machine 300. The portion of the transfer device 400 located at the winding machine 100 may be a transfer table 80. The transfer device 400 has an input end close to the de-rounding machine 200 and an output end close to the straightening machine 300. The transfer device 400 loads the mold 1b for carrying the annular workpiece 1a from the input end. The operator loads the bar stator core into the de-rounding machine 200. The de-rounding machine 200 reversely bends the bar stator core into a ring to form a reversely bent annular stator core 21, so that each sub-stator core 21 of the reversely bent annular stator core 21 is 1 is directed toward the outside of the annular stator core 21, and the formed reverse-bent annular stator core 21 is placed on the mold 1b of the transfer device 400, and is moved to the winding machine 100 via the transfer device 400. The winding machine 100 forms a reverse-bent annular stator 2, which is then placed on the transfer device 400 and transferred to the straightening machine 300 via the transfer device 400. The straightening machine 300 obtains the annular stator 2 with the mold 1b, demolds the mold 1b, and straightens and unfolds the annular stator to form a bar-shaped stator. At the same time, the demolded mold 1b is moved to the transfer device 400 and transferred via the transfer device 400 to be unloaded from the output end of the transfer device 400 to complete the stator winding work.

[0102] The above description is merely an exemplary embodiment of the present invention and does not limit the scope of protection of the present invention. Any equivalent structural transformation made by using the contents of the present invention description and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields, is included in the scope of protection of the present invention.

Claims

1. A winding limit device, characterized in that: include: a placement assembly having a winding position for winding an annular workpiece, the placement assembly comprising a winding table and a first rotary drive member, the winding table being used to limit the placement of the annular workpiece to be wound, the first rotary drive member being used to drive the winding table to rotate axially; and A limit fitting assembly includes a base and a limit platform rotatably mounted on the base. When the placement assembly is in the winding position, the limit platform and the winding platform are arranged relative to each other along the axial direction of the annular workpiece. The limit platform is used to limit and abut the annular workpiece, and can rotate synchronously with the winding platform when abutting the annular workpiece.

2. The winding limiting device according to claim 1, characterized in that: The limit platform includes a base, a first limit part and a second limit part. The first limit part and the second limit part are arranged on the base. The first limit part is used to limit the axial movement of the annular workpiece relative to the base, and the second limit part is used to limit the axial rotation of the annular workpiece relative to the base.

3. The winding limiting device according to claim 2, characterized in that: The first limiting portion is configured as a plurality of clamping claws arranged around the outer periphery of the base, and the plurality of clamping claws are used to abut and cooperate with the side of the annular workpiece facing the base.

4. The winding limiting device according to claim 3, characterized in that: An escape space is formed between adjacent clamping jaws, and each of the escape spaces is used to escape the winding portion of the annular workpiece.

5. The winding limiting device according to claim 3, characterized in that: Each of the clamping jaws has a clamping surface inclined relative to the base axis, the clamping surface has a first end close to the base and a second end away from the base, and the clamping surface is arranged away from the rotation axis of the limit platform from the first end to the second end.

6. The winding limiting device according to claim 2, characterized in that: The second limiting portion is configured as a first anti-deflection member, and at least one first anti-deflection member is provided. The first anti-deflection member is provided on a side of the base close to the annular workpiece, and the first anti-deflection member is used to be plugged into and matched with a mold for mounting the annular workpiece to limit the rotation of the annular workpiece relative to the base.

7. The winding limiting device according to claim 1, characterized in that: The limiting matching assembly further includes a first movable driving member that is driven and connected to the base. When the placement assembly is in the winding position, the first movable driving member is used to drive the limiting platform to approach or move away from the winding platform through the base.

8. The winding limiting device according to claim 1, characterized in that: A second anti-deflection member is provided on the side of the winding table facing the position-limiting fitting assembly. The second anti-deflection member is used to be plugged into and fitted with a mold for mounting the annular workpiece to limit the deflection of the annular workpiece relative to the winding table.

9. The winding limiting device according to claim 1, characterized in that: The limiting fitting assembly further includes a connecting assembly, wherein the connecting assembly connects the limiting platform and the base, and the connecting assembly can drive the limiting platform to elastically expand and contract along the axial direction of the annular workpiece.

10. The winding limiting device according to claim 9, characterized in that: The connecting assembly includes a rotating shaft and an elastic member, one end of the rotating shaft is fixedly connected to the limit platform, the other end of the rotating shaft is rotatably connected to the base and can be axially extended and retracted relative to the base, and the elastic member elastically connects the limit platform and the base.

11. The winding limiting device according to claim 10, characterized in that: The connecting assembly further includes a deflection limiting member, the deflection limiting member being provided at one end of the rotating shaft away from the limiting platform, the base having a limiting groove, the deflection limiting member being engaged with the limiting groove; The limit platform has a limit position abutting against the annular workpiece, and a separation position spaced apart from the annular workpiece. When the limit platform is in the limit position, the deflection limit member is located on a side of the limit groove away from the limit platform. When the limit platform is in the separation position, the deflection limit member is clamped in the limit groove.

12. The winding limiting device according to claim 11, characterized in that: A limiting seat is provided on a side of the base away from the limiting platform, and the limiting groove is opened on the limiting seat.

13. The winding limiting device according to any one of claims 1 to 12, characterized in that: The winding limit device also includes a second movable drive member, and the placement component also has a loading and unloading position for loading and / or unloading. The second movable drive member is used to drive the winding limit device to move back and forth between the winding position and the loading and unloading position.

14. A winding machine, characterized in that: include: The winding limiting device according to any one of claims 1 to 13; A winding device, the winding device is used to wind wire on an annular workpiece; A transfer table is used to place the annular workpiece to be wound and the annular workpiece after winding; as well as The loading and unloading device is used to move the annular workpiece to be wound from the transfer platform to the placing component of the winding limit device when the placing component of the winding limit device is in the loading and unloading position, and is used to move the annular workpiece after winding from the placing component to the transfer platform.

15. The winding machine according to claim 14, wherein The loading and unloading device includes a support frame and two clamping members arranged on opposite sides of the support frame. One of the two clamping members is used to clamp the annular workpiece after winding, and the other is used to clamp the annular workpiece to be wound.

16. The winding machine according to claim 15, wherein The loading and unloading device also includes a lifting drive member and a second rotating drive member, the second rotating drive member is used to drive the support frame to rotate so that one of the two clamping members is opposite to the transfer table and the other is opposite to the winding table, and the lifting drive member is used to drive the support frame to move axially along the winding table so that one of the two clamping members clamps the annular workpiece of the transfer table and the other clamps the annular workpiece of the winding table.

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