Splicing device and splicing method suitable for motor stator winding

Abstract

The present invention discloses a splicing device and method for motor stator windings, comprising: a winding support mechanism, comprising a positioning mold suitable for embedding multiple windings, and a longitudinal driving assembly detachably connected to the positioning mold for driving it to do lifting and lowering movement; wherein a ring-shaped support platform for supporting the winding is formed in the positioning mold; a winding push mechanism, comprising a plurality of push blocks evenly arranged along the circumferential direction to be suitable for enclosing and forming a center hole, and a plurality of lateral drive assemblies connected one-to-one with the push blocks for driving it to do translational movement; the lateral drive assembly is suitable for pushing the push blocks to make multiple windings closely spliced ​​in a ring shape, and at the same time strengthen the bonding effect of each winding with the corresponding vest and insulating paper. The present invention can improve the assembly processing efficiency and processing accuracy of the stator winding.

Description

Technical Field

[0001] The present invention relates to the technical field of motor production equipment, and in particular to a splicing device and a splicing method suitable for motor stator windings. Background Art

[0002] The stator of the axial flux motor is composed of many winding coils, which are arranged along the circumference of the motor so that the direction of the magnetic flux is parallel to the axis. This makes the direction of the magnetic field generated by the motor when working consistent with the axial direction of the rotor, thereby achieving efficient energy conversion.

[0003] Most existing brushless servo motors use centralized stator windings, which are composed of twelve fan-shaped iron core winding coils. Each fan-shaped iron core winding coil is independent of each other. All fan-shaped iron core winding coils are spliced ​​in sequence to form a ring, and then stator winding assemblies with different pole pairs are formed through different wiring methods of each winding. In this regard, for example, announcement number CN209389885U discloses a brushless servo motor centralized stator winding rapid positioning and assembly device, which realizes the operation of splicing a plurality of winding coils evenly distributed along the circumferential direction by cooperating with a positioning mold and a corresponding drive mechanism.

[0004] In view of the actual situation, the splicing process of the stator winding generally includes the following three processing steps, which include: fixing the heat dissipation vest and the insulating paper on a single winding, the circle-forming of multiple windings, and the welding and curing between the multiple windings in the circle-forming state. Therefore, for the circle-forming operation using the device of the above-mentioned public technology, the insulating paper and the heat dissipation vest (i.e. the metal sheet for heat dissipation attached to the surface of the winding) of each winding coil need to be manually attached before the circle-forming. The specific processing process is as follows: first apply glue to the inside of the heat sink vest, then paste the cut insulating paper to the glue of the heat sink vest, then continue to apply glue on the insulating paper, and then paste it with the winding. Since the glue has not yet solidified, you need to hold the heat sink vest and the winding with your hands at this time, and put the pasted windings in groups of two between the upper and lower plates of the tooling, and lock them with bolts for solidification. Finally, remove the tooling, take out the winding coils that have completed the pasting of the insulating paper and the heat sink vest, and then use the circle splicing device to realize the circle splicing processing of multiple winding coils. In this process, if the insulating paper and the heat sink vest are not cured after being pasted to the winding coil, it is easy to cause the heat sink vest to fall off and position shift in the subsequent circle splicing process, thereby affecting the yield of the stator winding.

[0005] Furthermore, for the windings after the circle is assembled, it is necessary to use a welding process to strengthen the connection effect between the multiple windings, so that the multiple windings after assembly can be fixed as an integral part. In this regard, it is difficult to coordinate the circle assembly device in the prior art with the welding process so that the windings in the circle state can maintain their reliable matching state for welding. In this way, if the winding shifts during the transfer of the winding in the circle state to the welding process, it is necessary to adjust the winding state before welding, which affects the processing efficiency of the overall assembly of the winding; if the winding state is not adjusted in place before welding, it will directly affect the yield of the winding after welding.

[0006] Therefore, for the serialized processing of the stator windings mentioned above, it is necessary to further optimize the processing device in order to improve the overall processing efficiency and optimize the processing quality. Summary of the invention

[0007] The first object of the present invention is to provide a splicing device suitable for motor stator windings to solve the technical problem of improving the efficiency of assembling and processing the stator windings.

[0008] The second object of the present invention is to provide a splicing method suitable for motor stator windings to solve the technical problem of improving the efficiency of assembling and processing the stator windings.

[0009] The splicing device for motor stator windings of the present invention is implemented as follows:

[0010] A splicing device suitable for motor stator windings, comprising:

[0011] A winding support mechanism, comprising a positioning mold suitable for embedding multiple windings, and a longitudinal driving assembly detachably connected to the positioning mold for driving the positioning mold to perform lifting and lowering movements; wherein a ring-shaped support platform for supporting the windings is formed in the positioning mold;

[0012] The winding pushing mechanism comprises a plurality of pushing blocks evenly arranged along the circumferential direction so as to enclose and form a central hole, and a plurality of transverse driving assemblies connected one by one to the pushing blocks for driving them to perform translational motion;

[0013] The lateral driving assembly is suitable for pushing the push block to tightly splice multiple windings into a circular ring shape, while strengthening the bonding effect between each winding and the corresponding vest and insulating paper.

[0014] In an optional implementation of the present invention, each of the push blocks is provided with at least one connection block for fixing the vest and at least one positioning plate for positioning the winding on the side end surface facing the center hole;

[0015] One positioning plate is suitable for matching with one winding, and when multiple windings correspond to each corresponding positioning plate respectively, the pre-circular arrangement of multiple windings is realized.

[0016] In an optional implementation of the present invention, the positioning plate protrudes from the side end surface of the push block facing the center hole; and

[0017] The protruding length of the positioning plate relative to the push block is greater than the thickness of the connecting block.

[0018] In an optional implementation of the present invention, the positioning plate and the push block are integrally formed or detachably connected.

[0019] In an optional implementation of the present invention, each of the push blocks is provided with 2 to 4 positioning plates for positioning the winding on the side end surface facing the center hole.

[0020] In an optional implementation of the present invention, the connecting block is made of elastic material; and

[0021] At least one groove for positioning the vest is preset in the connecting block.

[0022] In an optional implementation of the present invention, the positioning mold includes a lower mold plate and a mold core arranged on the lower mold plate;

[0023] The lower mold plate and the mold core are both cylindrical, and the lower mold plate and the mold core are coaxially matched; and

[0024] The outer diameter of the mold core is smaller than the outer diameter of the lower mold plate so that the annular portion of the lower mold plate protrudes from the outer circumferential wall surface of the mold core to form the support platform;

[0025] The outer diameter of the lower mold plate is not less than the outer diameter of a plurality of windings tightly spliced ​​into a circular ring shape; and the outer diameter of the upper mold plate is greater than the outer diameter of the mold core.

[0026] In an optional implementation of the present invention, the longitudinal drive assembly includes a support plate for supporting and positioning the mold, and a lifting cylinder connected to the support plate.

[0027] In an optional embodiment of the present invention, the support plate is suitable for being connected to the lower template; and

[0028] At least one pair of matching concave and convex positioning structures is provided between the matching end surfaces of the support plate and the lower template.

[0029] In an optional implementation of the present invention, the positioning mold further includes a cylindrical upper mold plate disposed above the mold core;

[0030] The outer diameter of the upper mold plate is smaller than the outer diameter of a plurality of windings tightly spliced ​​together to form a circular ring shape.

[0031] In an optional implementation of the present invention, the upper template, the lower template and the mold core are all detachably connected to each other.

[0032] The splicing method for motor stator windings of the present invention is implemented as follows:

[0033] A method for splicing motor stator windings, using the splicing device for splicing motor stator windings, comprising:

[0034] Step S1: Assembling the positioning module and the longitudinal driving assembly;

[0035] Step S2: placing multiple windings on a support table to pre-assemble and enclose them into a ring shape, and each winding has a corresponding push block;

[0036] Step S3: Put the vest into the connection block, then take a specified length of insulating paper, apply glue on both sides, and stick it between the corresponding vest and the winding;

[0037] Step S4: The lateral driving assembly operates to push the push block to tightly splice the multiple windings, while strengthening the bonding effect between each winding and the corresponding vest and insulating paper.

[0038] By adopting the above technical scheme, the present invention has the following beneficial effects: the splicing device and assembly method suitable for motor stator windings of the present invention, through the cooperation of the winding support mechanism and the winding pushing mechanism, can simultaneously reinforce the bonding effect of the vest, insulating paper and windings after multiple windings are spliced ​​and formed, so that for the processing process of the stator winding, separate tooling for curing the vest, insulating paper and windings is no longer required, but the curing process is directly carried out in the circle splicing device, which not only improves the efficiency, but also ensures the bonding effect of the vest, insulating paper and windings by controlling the size of the pushing force, improves the processing accuracy, and thus improves the yield rate of the stator winding processing. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the overall structure of a splicing device applicable to a motor stator winding according to an embodiment of the present application;

[0040] Figure 2 This is a first perspective view on an operating platform of a splicing device for motor stator windings according to an embodiment of the present application;

[0041] Figure 3 This is a second viewing angle diagram of an operating platform of a splicing device for motor stator windings according to an embodiment of the present application;

[0042] Figure 4 It is a structural schematic diagram of a longitudinal drive assembly of a splicing device for motor stator windings according to an embodiment of the present application;

[0043] Figure 5 It is a structural schematic diagram of a positioning mold of a splicing device suitable for motor stator windings in an embodiment of the present application;

[0044] Figure 6 It is a schematic diagram of the matching structure of the winding, the mold core and the push block of the splicing device for the motor stator winding according to the embodiment of the present application;

[0045] Figure 7 It is a schematic diagram of a splicing device for motor stator windings according to an embodiment of the present application for performing a circle splicing operation of multiple windings;

[0046] Figure 8 It is a schematic diagram of the push block, winding and mold core of the splicing device for motor stator windings of the embodiment of the present application operating in a disassembled state;

[0047] Fig. 9 It is a schematic diagram of a splicing device for motor stator windings according to an embodiment of the present application after a plurality of windings have completed a circle splicing operation;

[0048] Fig.10 This is a schematic diagram of the coordination between the positioning plate and the winding in an implementation case of the motor stator winding according to an embodiment of the present application;

[0049] Fig.11 This is a schematic diagram of the coordination between the positioning plate and the winding in another implementation case applicable to the motor stator winding of the embodiment of the present application.

[0050] In the figure: winding 11, positioning groove 111, insulating paper 12, vest 13, operating platform 2, through hole 21, lower template 31, upper template 32, core 33, support platform 34, long bolt 35, lifting cylinder 41, mounting bracket 42, guide column 43, linear bearing 44, support plate 45, positioning pin 61, positioning hole 62, push block 71, linear slide block 72, trapezoidal notch 73, lateral drive cylinder 81, buffer 82, positioning plate 91, connecting block 92, groove 93, bolt 94. DETAILED DESCRIPTION

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

[0052] Embodiment 1:

[0053] See also Figures 1 to 11 As shown, this embodiment provides a splicing device suitable for motor stator windings, including: an operating platform 2 and a winding supporting mechanism and a winding pushing mechanism arranged on the operating platform 2 for use with each other.

[0054] Specifically, first, the winding support mechanism includes a positioning mold suitable for embedding multiple windings 11, and a longitudinal driving component detachably connected to the positioning mold for driving the positioning mold to perform lifting motion.

[0055] Generally, the positioning mold used in this embodiment is formed with a ring-shaped support platform 34 for supporting the winding. Here, the positioning mold can be driven to move up and down by the longitudinal drive component, thereby adjusting the position of the positioning mold relative to the operating platform 2.

[0056] Here, the longitudinal drive assembly drives the positioning mold to do the lifting movement mainly so that the positioning mold can switch and adjust its position, so that when the winding 11 needs to be assembled into a circle, the positioning mold can enter the position required for the assembly process, and after the winding 11 is assembled into a circle, it can move upward with the winding 11 under the action of the longitudinal drive assembly to leave the position corresponding to the assembly process. That is to say, the positioning mold in this embodiment not only performs the supporting role in the process of assembling multiple windings 11 into a circle, but also undertakes the transfer role of the winding 11 after the assembly is completed and the supporting role in the welding and curing process of the winding 11 after the assembly. In addition, the positioning mold also assumes the positioning and coordination role of the winding 11 during the pasting process with the corresponding vest 13 and the insulating paper 12, and this role will be explained in the following embodiment description. Therefore, that is to say, the positioning mold in this embodiment plays a multi-purpose effect in the splicing device.

[0057] On the basis of the above situation, in combination with the accompanying drawings, an optional implementation is given as an example, the positioning mold includes a lower mold plate 31 and a mold core 33 disposed above the lower mold plate 31; the lower mold plate 31 and the mold core 33 are both cylindrical, and the lower mold plate 31 and the mold core 33 are preferably coaxially matched. In addition, the outer diameter of the mold core 33 is smaller than the outer diameter of the lower mold plate 31 so that the annular portion of the lower mold plate 31 protruding from the outer circumferential wall surface of the mold core 33 forms a support platform 34 for supporting the winding 11.

[0058] In addition, for example, an optional embodiment is given, the longitudinal drive assembly includes a support plate 45 for supporting the positioning mold, and a lifting cylinder 41 connected to the support plate 45. The support plate 45 here is mainly detachably matched with the lower mold plate 31 to realize the matching of the positioning mold and the longitudinal drive assembly.

[0059] It is necessary to explain here that a through hole 21 suitable for the support plate 45 to pass through is preset on the operating platform 2, and the lifting cylinder 41 is arranged below the operating platform 2. Specifically, the lifting cylinder 41 is fixed on the mounting bracket 42 below the operating platform 2. Considering that in order to improve the stability of the support plate 45 during operation, at least one guide column 43 is arranged between the support plate 45 and the mounting bracket 42, and the mounting bracket 42 forms a sliding fit with the guide column 43 through a linear bearing 44.

[0060] As for the cooperation between the lower template 31 and the support plate 45, the positioning mold can be directly mounted on the support plate 45, and the gravity of the positioning mold can be directly relied on to achieve the cooperation between the lower template 31 and the support plate 45. Based on this situation, in order to prevent the positioning mold from unexpected rotation when placed on the support plate 45, that is, to ensure the stability of the positioning mold position during the assembly of the winding 11, at least one pair of matching concave and convex positioning structures is provided between the support plate 45 and the end surface of the lower template 31 facing away from the upper template 32 in this embodiment.

[0061] Regarding the concave-convex positioning structure here, an optional implementation is given in conjunction with the attached drawings, which includes a positioning pin 61 convexly arranged on the support plate 45 and a positioning hole 62 concavely arranged on the end surface of the lower mold plate 31 facing away from the upper mold plate 32. Under this structure, through the cooperation of the positioning pin 61 and the positioning hole 62, the positioning mold can only move up and down on the support plate 45, and the positioning mold will not rotate relative to the support plate 45. Of course, the positioning pin 61 and the positioning hole 62 here can also be designed in reverse, and this embodiment does not make an absolute limitation on this.

[0062] In addition, it should be noted that the positioning mold of this embodiment may also include an upper mold plate 32 disposed above the mold core 33. Here, the upper mold plate 32 cooperates with the lower mold plate 31 to form an axial limit for the multiple windings 11 that have completed the circle assembly. For the multiple windings 11 that have completed the circle assembly operation, they can be limited and fixed on the positioning mold, so that their positions can still be positioned and fixed by the positioning mold during the subsequent welding process.

[0063] Furthermore, it is necessary to explain that the outer diameter of the lower template 31 is not less than the outer diameter of the multiple windings 11 tightly spliced ​​into a circular ring, and the outer diameter of the upper template 32 is less than the outer diameter of the multiple windings 11 tightly spliced ​​into a circular ring. The design of the outer diameter difference here is mainly based on the following considerations: After completing the operation of assembling multiple windings 11 into a circle, it is necessary to rely on the positioning mold to transfer the multiple windings 11 to the welding process, and in the welding process, the positioning mold still has to play a positioning role for the windings 11 in the circle state. Therefore, in order to make the positioning mold meet the use requirements of the circle assembly operation and the welding operation at the same time, the outer diameters of the upper template 32 and the lower template 31 need to be designed as above.

[0064] On the basis of the above structure, it should be noted that the upper template 32, the lower template 31 and the core 33 in this embodiment are all detachable structures that can be matched with each other, which can be achieved by, for example but not limited to, long bolts 35. Under this design, it is convenient to assemble the upper template 32, the core 33 and the lower template 31 together, and it is also convenient to disassemble the various components of the positioning mold so that the winding 11 that has finally completed the welding process can be removed from the positioning mold.

[0065] Next, the winding pushing mechanism of this embodiment will be described:

[0066] The winding pushing mechanism includes a plurality of push blocks 71 uniformly arranged along the circumferential direction to enclose and form a central hole, and a plurality of lateral drive assemblies connected to the push blocks 71 one by one for driving the push blocks to perform translational motion. The lateral drive assembly here is mainly used to drive the push blocks 71 to perform relative approaching and moving away from the support platform 34. When the push block 71 is relatively close to the support platform 34, the plurality of windings 11 that have been roughly enclosed in a circular ring shape and placed on the support platform 34 (when placing the windings 11 manually, it is not necessary to consider the gap between adjacent windings 11 to ensure that the adjacent windings 11 can fit closely, so the operation requirements for placing the windings 11 manually are reduced, and the matching gap requirements of the windings 11 will not be affected by the problem of improper manual operation) can further generate a pushing force from the opposite side of the mold core 33, so that the plurality of windings 11 can achieve close matching of adjacent windings 11, thereby achieving the processing accuracy requirements of the winding 11 in a circle.

[0067] The lateral drive assembly of this embodiment at least comprises a lateral drive cylinder 81 connected to the push block 71. In consideration of the precise positioning of the movement trajectory of the push block 71, a linear slide block 72 assembly may be provided between the push block 71 and the operating platform 2.

[0068] Regarding the cooperation between the transverse driving cylinder 81 and the push block 71 of this embodiment, a trapezoidal notch 73 can be optionally provided on the push block 71 to connect the transverse driving cylinder 81, thereby reducing the eccentricity between the transverse driving cylinder 81 and the push block 71 and preventing the service life of the device from being affected by the eccentricity.

[0069] In addition, for the transverse driving cylinder 81 used in this embodiment, a buffer 82 can be installed to adjust the stroke of the cylinder. This can reduce the impact force when the cylinder returns and stop it slowly, thereby protecting the cylinder and preventing excessive impact force when the piston is retracted. Since the piston rod moves very fast, a strong impact force will be generated when it comes into contact, pushing or pressing the impacted object.

[0070] In addition, in order to enable the splicing device of this embodiment to simultaneously meet the problem of achieving bonding and curing of the winding 11 with the corresponding vest 13 and the insulating paper 12 during the rounding process, the side end surface of the push block 71 used in this embodiment facing the center hole is provided with at least one connecting block 92 for fixing the vest 13 and at least one positioning plate 91 for positioning the winding 11. One positioning plate 91 is suitable for matching with one winding 11, and when multiple windings 11 correspond to each corresponding positioning plate 91, the pre-rounding of multiple windings 11 is realized.

[0071] It should be noted here that, in an optional implementation, a push block 71 is provided with a connection block 92 and a positioning plate 91, and a push block 71 pushes a winding 11, which can meet the use requirements of this embodiment. In another optional implementation, in order to simplify the structure of the overall splicing device on the one hand and simplify the processing process on the other hand, a push block 71 can be provided with 2 to 4 positioning plates 91 for positioning the winding 11 on the side end surface facing the central inner hole, and at this time, a push block 71 can push 2 to 4 windings 11 at a time under the action of the corresponding lateral drive assembly, so the structure of the overall splicing device can be greatly simplified. In this case, in conjunction with the accompanying drawings, for example, 4 positioning plates 91 are provided on a push block 71, and 4 independent connection blocks 92 can be provided on the push block 71. Of course, an integral connection block 92 can also be used to make it suitable for 4 vests 13 required by 4 windings 11. The above situations all meet the use requirements of this embodiment, and this embodiment is not absolutely limited to this. Regardless of whether a split connecting block 92 or an integral connecting block 92 is used, when one push block 71 corresponds to four windings 11, only one piece of insulating paper 12 is needed to synchronously correspond to the four windings 11, so that the vests 13 of the four windings 11 and the insulating paper 12 can be bonded together by applying glue once, which further simplifies the processing procedure and improves the operating efficiency.

[0072] On the basis of the above structure, it should be noted that the connecting block 92 in this embodiment is preferably made of elastic material; and a plurality of grooves 93 for positioning the vest 13 are preset in the connecting block 92. By providing the grooves 93 in the connecting block 92, a plurality of vests 13 can be positioned in sequence, and the subsequent pasting work is convenient. For example, the connecting block 92 can be made of beef tendon material and fixed to the push block 71 by screws for placing the vest 13. Under this structure, when the vest 13 and the winding 11 are misaligned, the relative position between the vest 13 and the winding 11 can be corrected by the elasticity of the beef tendon material.

[0073] In addition, regarding the cooperation between the positioning mold and the push block 71 of this embodiment in the process of forming a circle of multiple windings 11 and curing the bonding effect between the winding 11 and the vest 13 and the insulating paper 12, it is necessary to explain in detail:

[0074] The positioning plate 91 of this embodiment protrudes from the side end surface of the push block 71 facing the center hole; and the positioning plate 91 is suitable for being inserted into the preset positioning groove 111 in the winding 11. Here, since the connecting block 92 is also arranged on the side end surface of the push block 71 facing the center hole, in order to make the positioning plate 91 not interfered by the connecting block 92 on the basis of meeting the matching of the winding 11, in terms of layout, the positioning plate 91 is arranged below the connecting block 92, and the protruding length of the positioning plate 91 relative to the push block 71 is greater than the thickness of the connecting block 92. Here, the thickness of the connecting block 92 and the length of the positioning plate 91 protruding from the push block 71 are both referred to the dimension along the radial direction of the support platform 34. Roughly, the length of the positioning plate 91 protruding from the push block 71 is roughly equal to the sum of the depth of the positioning groove 111 along the radial direction of the support platform 34 and the thickness of the connecting block 92. Of course, the length of the positioning plate 91 protruding from the push block 71 here can be slightly less than the sum of the depth of the positioning groove 111 along the radial direction of the support platform 3 and the thickness of the connecting block 92.

[0075] That is to say, the cooperation between the positioning plate 91 and the winding 11 here enables the push block 71 to accurately produce a pushing effect on the corresponding winding 11. The winding 11 itself is placed on the support table 34. Therefore, in order to make the winding 11 synchronously meet the cooperation between the support table 34 and the positioning plate 91, the positioning plate 91 is located on the circumferential side of the support table 34 in the initial state. In the process of placing the winding 11 on the support table 34, the slot opening of the positioning groove 111 of the winding 11 is aligned with the positioning plate 91. In this process, the positioning plate 91 can also partially enter the positioning groove 111. In this way, for the process of placing the winding 11, it is only necessary to ensure that the winding 11 is in place along the radial dimension of the support table 34. The absolute position of the winding 11 on the support table 34 in this direction does not need to be precisely controlled. That is to say, the absolute position of the winding 11 along the radial dimension of the support table 34 can be adjusted by the action of the push block 71, so the operation requirements in the process of manually placing the winding 11 can be reduced. Based on this situation, the multiple windings 11 placed on the support table 34 will be simultaneously positioned by the corresponding positioning plates 91, so that the push block 71 can accurately produce the pushing effect on the corresponding winding 11, and there will be no problem of pushing deviation. Only under the premise of ensuring the accuracy of the pushing direction, can the vest 13, the insulating paper 12 and the corresponding winding 11 be accurately matched.

[0076] Based on the above situation, that is to say, the positioning plate 91 also needs to be able to achieve reasonable cooperation with the support platform 34. In this regard, it is necessary to further explain that:

[0077] In a first optional implementation, the positioning plate 91 and the push block 71 are integrally formed.

[0078] Specifically, since the positioning plate 91 will gradually enter the support platform 34 as the push block 71 moves toward the winding 11, during this process, the winding 11 placed on the support platform 34 itself needs to be fully mounted and attached to the support platform 34 in order to play the supporting role of the support platform 34 for the winding 11, that is, except for the positioning groove 111 on the end surface of the winding 11 facing the support platform 34, which will not be attached to the support platform 34, the other parts can be fully mounted and attached to the support platform 34. When the positioning plate 91 enters the support platform 34, it will not cause the change of the position of the winding 11 so that the winding 11 and the support platform 34 can no longer be reliably attached. It is necessary to accurately design the thickness of the positioning plate 91 and the matching height with the support platform 34 to ensure that the support platform 34 forms a reliable and stable supporting role for the winding 11. At the same time, after the plurality of windings 11 are assembled into a circle, the positioning plate 91 of the push block 71 can be pulled away from the bottom of the winding 11 from the support platform 34 without affecting the position of the winding 11 on the support platform 34 .

[0079] It should be noted that the length and width of the positioning plate 91 used in this embodiment are not limited, and need to be determined according to the specific model and structure of the winding 11 and the thickness of the lower template 31. The one-piece design requires a relatively high thickness of the positioning plate 91, and also relatively high assembly accuracy requirements for the entire device.

[0080] In a second optional implementation, the positioning plate 91 and the push block 71 are detachably connected by bolts 94 .

[0081] Specifically, the relative height between the positioning plate 91 and the lower template 31 is required to be relatively high. It is necessary to ensure that there is no interference between the positioning plate 91 and the positioning groove 111 and the support platform 34 of the lower template 31. The assembly accuracy is difficult to meet the use requirements. The positioning plate 91 and the push block 71 can be made detachable and adjustable. By adding a gasket above the positioning plate 91, the relative height between each positioning plate 91 and the lower template 31 can be freely adjusted to prevent interference.

[0082] In summary, for the splicing device suitable for the motor stator winding of this embodiment, through the cooperation of the winding support mechanism and the winding pushing mechanism, the bonding effect of the vest 13, the insulating paper 12 and the winding 11 can be simultaneously reinforced after the multiple windings 11 are spliced ​​and formed, so that for the processing process of the stator winding, there is no longer a need for separate tooling for curing the vest 13, the insulating paper 12 and the winding 11, but the curing process is directly carried out in the circle splicing device, which not only improves the efficiency, but also controls the magnitude of the pushing force transmitted to the push block 71 to ensure the bonding effect of the vest 13, the insulating paper 12 and the winding 11, improves the processing accuracy, ensures that the vest 13 will not fall off during the pasting process, and makes the relative position between the vest 13 and the winding 11 more precise and the pasting more firmly, thereby improving the yield rate of the stator winding processing.

[0083] Embodiment 2:

[0084] Based on the splicing device applicable to the motor stator winding of embodiment 1, this embodiment provides a splicing method applicable to the motor stator winding, which generally includes the following steps:

[0085] Step S1: Assembling the positioning module and the longitudinal driving assembly;

[0086] Step S2: placing a plurality of windings 11 on the support platform 34 to pre-assemble and enclose to form a ring shape, and each winding 11 has a corresponding push block 71;

[0087] Step S3: Put the vest 13 into the connection block 92, and then take the insulating paper 12 of a specified length, apply glue on both sides, and then stick it between the corresponding vest 13 and the winding 11;

[0088] Step S4: The lateral driving assembly operates to push the push block 71 to tightly splice the plurality of windings 11 , while reinforcing the bonding effect between each winding 11 and the corresponding vest 13 and insulating paper 12 .

[0089] In more detail, in step S1, when in use, the multiple lateral drive cylinders 81 on the operating platform 2 are in the initial position (the lateral drive cylinders 81 are in a relatively retracted state), the lifting cylinder 41 extends to lift the pallet 45 so that the pallet 45 is higher than the operating platform 2, and the lower template 31 is aligned and placed on the pallet 45, and the positioning pins 61 on the pallet 45 are inserted into the positioning holes 62 of the lower template 31, and then the core 33 is placed on the lower template 31. After the assembly of the core 33 and the lower template 31 is completed, the lifting cylinder 41 retracts, so that the pallet 45 returns to the through hole 21 of the operating platform 2.

[0090] In step S2 , a plurality of windings 11 are placed on the support platform 34 to be pre-assembled and enclosed to form a ring shape, and a portion of the positioning groove 111 of each winding 11 cooperates with the positioning plate 91 , so that each winding 11 is located between the positioning mold and the push block 71 .

[0091] In step S3, the vest 13 is placed in the connection block 92, and the insulating paper 12 of a specified length is taken, and the insulating paper 12 is pasted between the vest 13 and the winding 11 after double-sided glue coating. At this time, for the insulating paper 12 corresponding to each winding 11, it can be fixed on one side, for example, the insulating paper 12 is pasted on the connection block 92, or the insulating paper 12 is pasted on the winding 11, and the fixation of the other side of the insulating paper 12 is achieved by the subsequent movement of the push block 71. In this operation mode, a relatively loose gap can be formed between the vest 13 and the winding 11 to reduce the difficulty of manually bonding the insulating paper 12.

[0092] In step S4, the lateral driving cylinder 81 is started to make the push block 71 move toward the winding 11, and the vest 13, the insulating paper 12 and the winding 11 are pressed tightly by the relative action of the push block 71 and the positioning mold. At the same time, the multiple windings 11 can also be further moved toward the core 33, so that the multiple windings 11 are attached to the core 33 toward the side end surface of the core 33, and the close fit between the multiple windings 11 is achieved.

[0093] After the rounding operation of the plurality of windings 11 at the core 33 is completed, the upper mold plate 32 is fastened and installed above the core 33 .

[0094] Finally, the plurality of lateral drive cylinders 81 are retracted at the same time, and the lifting cylinder 41 is extended to make the support plate 45 and the positioning mold on the support plate 45 rise together with the assembled winding 11, and then the winding 11 and the positioning mold are lifted up together to leave the support plate 45, and the positioning mold and the winding 11 are sent to the next processing step, such as welding. At this time, a new positioning mold is installed on the support plate 45 to carry out a new round of winding 11 assembly operation.

[0095] In addition, for the winding 11 on the positioning mold, in the welding process, there is no need to detach the upper mold plate 32, and the bracket equipped with the wiring ring is fixedly set on the winding 11, and then the winding 11 outlet position is welded to the wiring ring. Finally, a circle of high-temperature resistant tape is attached to the lower mold plate 31, and the potting glue is injected between the high-temperature tape and the winding 11, and then heated and cured. After the initial curing is completed, the stator windings 11 are fixed, and the positioning mold can be taken off. Therefore, for the positioning mold used in this embodiment, it can not only be used for the circle splicing operation, but also for the subsequent welding operation, which not only reduces the cost, but also improves the processing efficiency, and avoids the problem of transferring the winding 11 between different processing procedures. In addition, for the positioning mold used in this embodiment, it can meet the use requirements of the splicing process, and can meet the use requirements of the welding process, realize the dual-use function of a mold, reduce the mold cost, simplify the processing process flow, and improve the processing efficiency and processing accuracy.

[0096] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention in detail. It should be understood that the above are only specific embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

[0097] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0098] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0099] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the product of the invention is usually placed when in use. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0100] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0101] In the present invention, unless otherwise clearly specified and limited, a first feature being above or below a second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, a first feature being above, above, and above a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being below, below, and below a second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

Claims

1. A splicing device suitable for motor stator windings, characterized in that: include: A winding support mechanism, comprising a positioning mold suitable for embedding multiple windings, and a longitudinal driving assembly detachably connected to the positioning mold for driving the positioning mold to perform lifting and lowering movements; wherein a ring-shaped support platform for supporting the windings is formed in the positioning mold; A winding pushing mechanism, comprising a plurality of push blocks evenly arranged along the circumferential direction so as to enclose and form a central hole, and a plurality of lateral driving components connected one-to-one with the push blocks for driving them to perform translational motion; each of the push blocks has at least one positioning plate protruding from the side end surface facing the central hole; a positioning plate is suitable for cooperating with a winding, and when a plurality of windings correspond to each corresponding positioning plate respectively, a plurality of windings are pre-arranged in a circle; and each push block has at least one connecting block for fixing a vest on the side end surface facing the central hole; at least one groove for positioning the vest is preset in the connecting block; the protruding length of the positioning plate relative to the push block is greater than the thickness of the connecting block; The lateral driving assembly is suitable for pushing the push block to tightly splice multiple windings into a circular ring shape, while strengthening the bonding effect between each winding and the corresponding vest and insulating paper.

2. The splicing device for motor stator windings according to claim 1, characterized in that: The positioning plate and the push block are integrally formed or detachably connected.

3. The splicing device for motor stator windings according to claim 1, characterized in that: Each push block is provided with 2 to 4 positioning plates for positioning the winding on the side end surface facing the central hole.

4. The splicing device for motor stator windings according to claim 1, characterized in that: The connecting block is made of elastic material.

5. The splicing device for motor stator windings according to claim 1, characterized in that: The positioning mold comprises a lower mold plate and a mold core arranged on the lower mold plate; The lower mold plate and the mold core are both cylindrical, and the lower mold plate and the mold core are coaxially matched; and The outer diameter of the mold core is smaller than the outer diameter of the lower mold plate so that the annular portion of the lower mold plate protrudes from the outer circumferential wall surface of the mold core to form the support platform; The outer diameter of the lower mold plate is not less than the outer diameter of a plurality of windings tightly spliced ​​together in a circular ring shape.

6. The splicing device for motor stator windings according to claim 5, characterized in that: The longitudinal driving assembly comprises a support plate for supporting and positioning the mold, and a lifting cylinder connected to the support plate.

7. The splicing device for motor stator windings according to claim 6, characterized in that: The support plate is suitable for being detachably connected to the lower template; and At least one pair of matching concave and convex positioning structures is provided between the matching end surfaces of the support plate and the lower template.

8. The splicing device for motor stator windings according to any one of claims 5 to 7, characterized in that: The positioning mold also includes a cylindrical upper mold plate arranged above the mold core; The outer diameter of the upper mold plate is smaller than the outer diameter of a plurality of windings tightly spliced ​​into a circular ring shape, and the outer diameter of the upper mold plate is larger than the outer diameter of the mold core.

9. The splicing device for motor stator windings according to claim 8, characterized in that: The upper template, the lower template and the mold core are all detachably connected to each other.

10. A method for splicing motor stator windings, characterized in that: The splicing device for motor stator windings as claimed in any one of claims 1 to 9 comprises: Step S1: Assembling the positioning module and the longitudinal driving assembly; Step S2: placing multiple windings on a support table to pre-assemble and enclose them into a ring shape, and each winding has a corresponding push block; Step S3: Put the vest into the connection block, then take a specified length of insulating paper, apply glue on both sides, and stick it between the corresponding vest and the winding; Step S4: The lateral driving assembly operates to push the push block to tightly splice the multiple windings, while strengthening the bonding effect between each winding and the corresponding vest and insulating paper.

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