Motor Stator Winding Insertion Method and Motor Stator Winding Insertion Process Equipment

Abstract

The present invention discloses a method for winding coils in a motor stator, which comprises the following steps: respectively buckling each coil pancake of each phase coil with an iron core to form each combined unit, and sleeving the combined units on a first assembly column section in sequence and performing pre-compression to form a pre-combined assembly; pushing the pre-combined assembly to a second assembly column section and performing compression, wherein the diameter of the second assembly column section is larger than that of the first assembly column section. Since the diameter of the first assembly column section is smaller, the gap between it and the iron core is larger, and the coaxiality of the combined unit in the guiding shaft is poorer. However, the assembly is convenient and smooth, so a pre-combined assembly can be formed quickly. Then, when the pre-combined assembly is placed into the second assembly column section with a larger diameter, coaxiality correction can be performed, and during the pushing process, each combined unit is quickly corrected in sequence, so that the overall operation is convenient and fast. The present invention also discloses a process equipment for winding coils in a motor stator.

Description

Technical Field

[0001] The present invention relates to the technical field of motor assembly, and more specifically, to a method for winding a motor stator, and also to a process equipment for winding a motor stator. Background Art

[0002] The stator of a submersible motor is assembled by alternately fitting 3 groups of multiple continuously wound coil cakes and a cake-shaped iron core. The stator slot fill factor is high, which can improve the power density of the motor and maximize the lifting force and oil production of the motor.

[0003] Currently, the stator winding is manually operated and requires two people to cooperate. One person assembles the iron core and the coil cake and then puts them on the guiding shaft, and the other person holds the guiding shaft for cooperation, and then presses the coil cake and the iron core tightly through a hydraulic press.

[0004] The manual winding method has the problem that the guiding shaft and the hydraulic press ram are not concentric, and it is easy to tilt during the downward pressing of the ram, resulting in uneven force on the coil when the hydraulic press presses down, damage to the coil due to extrusion deformation, and poor flatness of the stator end face.

[0005] In summary, how to effectively solve the problem of poor operation effect of the current motor stator winding method is an urgent problem to be solved by those skilled in the art at present. Summary of the Invention

[0006] In view of this, the first object of the present invention is to provide a method for winding a motor stator, which can effectively solve the problem of poor operation effect of the current motor stator winding method, and the second object of the present invention is to provide a process equipment for winding a motor stator.

[0007] In order to achieve the above first object, the present invention provides the following technical solutions:

[0008] A method for winding a motor stator includes the following steps:

[0009] Buckling each coil cake of each phase coil with the iron core respectively to form each combined unit, and sleeving the combined units on the first assembly column section in sequence and performing pre-compression to form a pre-combined assembly;

[0010] Pushing the pre-combined assembly to the second assembly column section and performing compression, the diameter of the second assembly column section is larger than that of the first assembly column section.

[0011] In this method of winding the stator of the motor, there are two assembly column segments with different diameters, namely the first assembly column segment and the second assembly column segment. Since the diameter of the first assembly column segment is smaller, the gap between it and the iron core is larger, and the coaxiality of the combined unit in the guiding shaft is poor. However, the assembly is convenient and smooth, so a pre-assembled component can be quickly formed. Then, when the pre-assembled component is placed into the second assembly column segment with a larger diameter, coaxiality correction can be performed, and during the pressing process, each combined unit can be quickly corrected in sequence, so that the overall operation is convenient and fast. In summary, this method of winding the stator of the motor can effectively solve the problem that the current method of winding the stator of the motor has poor operation effect.

[0012] Preferably, the steps of respectively buckling each coil pancake of each phase coil with the iron core to form each combined unit, and sequentially sleeving the combined units on the first assembly column segment of the guiding shaft and performing pre-compression are as follows:

[0013] Step 101: Buckle the current coil pancake of the A-phase coil with the iron core, then sleeve it on the first assembly column segment, and press it tightly;

[0014] Step 102: Buckle the current coil pancake of the B-phase coil with the iron core, then sleeve it on the first assembly column segment, and press it tightly;

[0015] Step 103: Buckle the current coil pancake of the C-phase coil with the iron core, then sleeve it on the first assembly column segment, and press it tightly;

[0016] Step 104: Return to Step 101 until the assembly of each phase coil is completed to form the pre-assembled component.

[0017] Preferably, the fitting gap between the first assembly column segment and the iron core is 1.0 mm - 1.5 mm, and the fitting gap between the second assembly column segment and the iron core is 0.01 mm - 0.07 mm.

[0018] Preferably, the leading end of the second assembly column segment has a tapered guiding segment.

[0019] To achieve the above second object, the present invention also provides a motor stator wire embedding process equipment, which includes: a guiding shaft, having a first assembly column section and a second assembly column section arranged in sequence along the guiding direction, and the diameter of the second assembly column section is larger than that of the first assembly column section; a fixing device for fixing the guiding shaft at the assembly position; a pushing device, oppositely arranged with the fixing device, for axially pushing the iron core sleeved on the guiding shaft located at the assembly position along the guiding shaft to enter the first assembly column section and be able to enter the second assembly column section from the first assembly column section; a supporting platform, oppositely arranged with the pushing device for supporting the iron core pushed by the pushing device; and a coil holder, arranged on the lifting side of the lifting plate for storing coils. This motor stator wire embedding process equipment can be applied to the above motor stator wire embedding method. Since the above motor stator wire embedding method has the above technical effects, this motor stator wire embedding process equipment should also have corresponding technical effects.

[0020] Preferably, the first assembly column section and the second assembly column section are connected by a tapered guiding section.

[0021] Preferably, the pushing device includes a pressing head and a telescopic driving device, and the pressing head is detachably connected to the driving end of the telescopic driving device; the pressing head is a nylon pressing head or a polytetrafluoroethylene pressing head, and the telescopic speed and telescopic stroke of the telescopic driving device are both adjustable.

[0022] Preferably, the coil holder includes three material storage parts evenly arranged around the assembly position; it also includes a sliding seat, and the material storage parts are installed on the sliding seat to be able to move in a direction perpendicular to the guiding shaft, and the material storage parts are detachably installed on the sliding seat; the material storage parts are installed on the sliding seat through an adjusting device to adjust the distance between the material storage parts and the sliding seat in the axial direction of the guiding shaft; the material storage parts are material cylinders.

[0023] Preferably, a platform lock for clamping and fixing the guiding shaft is installed on the supporting platform; the platform lock includes a movable clamping block, a fixed clamping block fixedly installed on the supporting platform, and a clamping driving device for driving the movable clamping block to move closer to and farther from the fixed clamping block; the platform lock is arranged on the lifting side of the supporting platform.

[0024] Preferably, it further includes a guide rail for lifting and guiding the support table and a lifting support device for driving the support table to move axially along the guide shaft; the guide rail is matched with the support table through a linear bearing; it further includes a moving mechanism for driving the fixing device to move in a direction perpendicular to the guide shaft, the support table is provided with a matching U-shaped slot hole, and the fixing device is a clamping and fixing device for clamping and fixing the guide shaft; it further includes a controller for controlling the fixing device and the pressing device; it further includes a limit sensor for detecting whether the guide shaft has been moved into the assembly position. Brief Description of the Drawings

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 It is a schematic flow chart of the method for winding the stator of an electric motor provided by an embodiment of the present invention;

[0027] Figure 2 It is a schematic structural diagram of the guide shaft provided by an embodiment of the present invention;

[0028] Figure 3 It is a schematic structural diagram of the process equipment for winding the stator of an electric motor provided by an embodiment of the present invention;

[0029] Figure 4 It is a schematic structural diagram of the stator provided by an embodiment of the present invention;

[0030] Figure 5 It is a schematic structural diagram of the coil provided by an embodiment of the present invention;

[0031] Figure 6 It is a schematic structural diagram of the iron core provided by an embodiment of the present invention.

[0032] The reference signs in the drawings are as follows:

[0033] Pressing device 1, coil holder 2, controller 3, guide shaft 4, table lock 5, support table 6, fixing device 7, coil cake 8;

[0034] First assembly column section 41, second assembly column section 42, tapered guide section 43, convex shoulder 44, cylindrical section 45, threaded hole 46. Detailed Embodiments

[0035] The embodiment of the present invention discloses a method for winding the stator of an electric motor to effectively solve the problem that the current method for winding the stator of an electric motor has poor operation effect

[0036] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts shall fall within the protection scope of the present invention.

[0037] Please refer to Figures 1-6 , Figure 1 , which is a schematic flow chart of the method for winding the stator of an electric motor provided by an embodiment of the present invention; Figure 2 , which is a schematic structural diagram of the guide shaft provided by an embodiment of the present invention; Figure 3 , which is a schematic structural diagram of the process equipment for winding the stator of an electric motor provided by an embodiment of the present invention; Figure 4 , which is a schematic structural diagram of the stator provided by an embodiment of the present invention; Figure 5 , which is a schematic structural diagram of the coil provided by an embodiment of the present invention; Figure 6 , which is a schematic structural diagram of the iron core provided by an embodiment of the present invention.

[0038] In some embodiments, as shown in the attached Figure 1 , a method for winding the stator of an electric motor is provided. Specifically, it mainly includes the following steps:

[0039] Step 100: Buckle each coil pancake of each phase coil with the iron core respectively to form each combined unit, and sequentially sleeved the combined units on the first assembly column section of the guide shaft and perform pre-compression to form a pre-combined assembly.

[0040] It should be noted that, among them, each coil pancake 8 of each phase coil is respectively buckled with the iron core to form each combined unit, and the combined units are sequentially sleeved on the first assembly column section 41 of the guide shaft 4 and pre-compressed. The above steps can be adjusted according to needs, as long as the combined units formed by the combination of each coil pancake 8 and the iron core can be sequentially sleeved on the first assembly column section 41 of the guide shaft 4 and compressed to form a pre-combined assembly.

[0041] Specifically, it can be that each coil pancake 8 of each phase coil is first buckled with the iron core respectively to form each combined unit; then, the combined units are sequentially placed on the first assembly column section 41, and finally compressed. Of course, starting from placing the second combined unit, each time a combined unit is placed, it is compressed to better control the tight pressure between the combined units.

[0042] Of course, it is also possible to first fasten the current coil pancakes 8 of each phase coil to the iron core respectively to form each phase combination unit, then sequentially place each phase combination unit into the first assembly column section 41, and then perform pressing; then return to the step of fastening the current coil pancakes 8 of each phase coil to the iron core respectively to form each phase combination unit until all the coil pancakes of each phase coil are assembled.

[0043] Step 200: Push the pre-combined component to the second assembly column section of the guide shaft and perform pressing. The diameter of the second assembly column section is larger than that of the first assembly column section.

[0044] It should be noted that in step 100, the pre-pressing is mainly to make the contact between each combination unit closer through pressing. Therefore, the pressing force used in step 100 can be smaller than that in step 200; of course, it can also be the same according to the actual situation, or the former can be set to be greater than the latter.

[0045] The diameter of the second assembly column section 42 is larger than that of the first assembly column section 41, which mainly means that the fitting clearance between the first assembly column section 41 and the iron core is larger than the fitting clearance between the second assembly column section 42 and the iron core. For example, the fitting clearance between the first assembly column section 41 and the iron core can be set between 1.0 mm and 1.5 mm, and the fitting clearance between the second assembly column section 42 and the iron core can be set between 0.01 mm and 0.07 mm. After cooperating with the second assembly column section 42, the coaxiality of the stator can be reduced to within 0.035 mm. So that when the combination unit is positioned through the first assembly column section 41, it is mainly a preliminary positioning, that is, to make them basically consistent. To form the above-mentioned pre-combined component. Then the whole is pushed into the second assembly column section 42 for final pre-combination and forming.

[0046] It should be noted that moving from the first assembly column section 41 to the second assembly column section 42 can be a direct transfer. At this time, the first assembly column section 41 and the second assembly column section 42 are directly docked, such as through a tapered guide section 43 for docking guidance. Of course, it can also be first moved from the first assembly column section 41 to the intermediate column section and then moved from the intermediate column section to the second assembly column section 42. At this time, the first assembly column section 41 and the second assembly column section 42 are connected through the intermediate column section. Of course, it can also be a clamping device composed of a pressing device and a supporting device. In the clamped state, the pre-combined component is taken out from the first assembly column section 41. At this time, the middle of the pre-combined component is empty, and the clamping device keeps the structures of the components of the pre-combined component stable; then the clamping device pushes the pre-combined component into the second assembly column section 42 for final pressing; at this time, the first assembly column section 41 and the second assembly column section 42 can be separated.

[0047] In this method for inserting coils into the motor stator, there are two assembly column segments with different diameters, namely the first assembly column segment 41 and the second assembly column segment 42. Since the diameter of the first assembly column segment 41 is smaller, the gap between it and the iron core is larger, and the coaxiality of the combined unit in the guide shaft is relatively poor. However, the assembly is convenient and smooth, so a pre-assembled component can be quickly formed. Then, when the pre-assembled component is placed into the second assembly column segment 42 with a larger diameter, coaxiality correction can be performed, and during the pressing process, each combined unit can be quickly corrected in sequence, so that the overall operation is convenient and fast. In summary, this method for inserting coils into the motor stator can effectively solve the problem that the current method for inserting coils into the motor stator has poor operation effect.

[0048] In some embodiments, it is preferably that the above step 100 is specifically as follows:

[0049] Step 101: After buckling the current coil pancake of the A-phase coil with the iron core, sleeving it on the first assembly column segment and pressing it tightly;

[0050] Step 102: After buckling the current coil pancake of the B-phase coil with the iron core, sleeving it on the first assembly column segment and pressing it tightly;

[0051] Step 103: After buckling the current coil pancake of the C-phase coil with the iron core, sleeving it on the first assembly column segment and pressing it tightly;

[0052] Step 104: Return to step 101 until the assembly of each phase of the coil is completed to form the pre-assembled component.

[0053] It should be noted that in step 101, when the first combined unit is placed, it may not be pressed tightly. Through the above steps, it can be found that after each coil pancake 8 is buckled and combined with the iron core to form a combined unit, it is placed into the first assembly column segment 41 and pressed tightly, which can ensure the adhesion between adjacent combined units, avoid large relative lateral movement between adjacent combined units, and thus better protect the combined units.

[0054] In some embodiments, the leading end of the second assembly post segment 42 has a tapered guiding segment 43, such that pushing the pre-assembled component onto the second assembly post segment 42 specifically means first inserting the pre-assembled component from the tapered guiding segment 43. Through the gradually increasing cross-section of the tapered guiding segment 43, the lateral position of the combined units in the pre-assembled component is laterally corrected until it enters the second assembly post segment 42. That is, when each combined unit in the pre-assembled component passes through the tapered guiding segment 43, its lateral position can be gradually corrected. Specifically, the tapered guiding segment 43 can be connected between the first assembly post segment 41 and the second assembly post segment 42 for transition. And the small-diameter segment of the tapered guiding segment 43 has the same diameter as and is coincidentally arranged with the leading end diameter of the first assembly post segment 41, while the large-diameter segment has the same diameter as and is coincidentally arranged with the leading end diameter of the second assembly post segment 42. Specifically, both the first assembly post segment 41 and the second assembly post segment 42 can be cylindrical segments, and the tapered guiding segment 43 is in the shape of a regular frustum of a cone. Of course, the first assembly post segment 41 and the second assembly post segment 42 can also be tapered. A threaded hole 46 can be machined at the upper end of the guiding shaft for lifting the guiding shaft 4. That is, a threaded hole 46 can be provided at the leading end of the first assembly post segment 41 for convenient lifting. One end of the second assembly post segment 42 is the above-mentioned leading end, and the other end can be provided with a shoulder portion 44 to support or limit the combined unit. A cylindrical segment 45 is provided on the side of the guiding shaft away from the second assembly post segment 42 of the shoulder portion 44, and the cylindrical segment 45 can be clamped to fix the entire guiding shaft 4.

[0055] In some embodiments, before step 100, the A-phase coil, B-phase coil, and C-phase coil can be first placed at a 120° spatial position, and a guiding shaft 4 is placed at the central position of the three coils. Then step 100 is executed. For example, first pick up an iron core and fit it onto the first coil pancake 8 of the A-phase coil to assemble a combined unit, and load the combined unit into the first assembly post segment 41 together. The starting push device 1 of the guiding shaft 4 moves downward to press the iron core and the coil pancake 8 tightly. Then pick up an iron core and fit it onto the first coil pancake 8 of the B-phase coil to assemble a combined unit, load the combined unit into the first assembly post segment 41, start the push device 1 to move downward to press the iron core and the coil pancake 8 tightly. Then pick up an iron core and fit it onto the first coil pancake 8 of the C-phase coil to assemble a combined unit, load the combined unit into the first assembly post segment 41, start the push device 1 to move downward to press the iron core and the coil pancake 8 tightly. Repeat the above operations until the entire stator iron core and coil are loaded into the first assembly post segment 41. Increase the stroke of the downward pressing device to press the entire stator into the second assembly post segment 42, and then apply a certain pressure to tightly press the stator iron core to complete the wire embedding of the submersible motor stator.

[0056] In some embodiments, the present embodiment provides a motor stator wire embedding process device, which may include a part or all of the following structures: a guiding shaft 4, a fixing device 7, a pushing device 1, a supporting platform 6, and a coil holder 2.

[0057] In some embodiments, the guiding shaft 4 may refer to the guiding shaft 4 adopted in any of the above embodiments. For example, the guiding shaft 4 is sequentially provided with a first assembly column section 41 and a second assembly column section 42 along the guiding direction. The diameter of the second assembly column section 42 is larger than that of the first assembly column section 41, so that the fitting clearance between the first assembly column section 41 and the iron core is larger than the fitting clearance between the second assembly column section 42 and the iron core. For example, the fitting clearance between the first assembly column section 41 and the iron core can be 1.0 mm - 1.5 mm, and the fitting clearance between the second assembly column section 42 and the iron core can be 0.01 mm - 0.07 mm, so that after cooperating with the second assembly column section 42, the coaxiality of the stator can be reduced to within 0.035 mm. And preferably, the first assembly column section 41 and the second assembly column section 42 are connected by a tapered guiding section 43.

[0058] In some embodiments, the fixing device 7 is used to fix the guiding shaft 4 in the assembly position. It should be noted that there are mainly two fixing methods: one is detachable fixing to facilitate the replacement of the guiding shaft 4, specifically, such as a bolt fixing device, a clamping fixing device, a magnetic attraction fixing device, etc.; the other is non-detachable fixing, such as a fixing device 7 using welding, integral molding connection, etc. The guiding shaft 4 is arranged in the assembly position, and at this time, the guiding shaft 4 remains stationary, that is, the assembled iron core can be loaded into the guiding shaft 4. In practical applications, the guiding shaft 4 in the assembly position is generally vertically arranged. Of course, the placement state of the entire motor stator wire embedding process device can also be adjusted according to the actual application state, so that the guiding shaft 4 in the assembly position is no longer vertically arranged. And through this fixing device 7, the guiding shaft 4 can be stably in the assembly position to facilitate subsequent operations.

[0059] In some embodiments, the pushing device 1 is arranged opposite to the fixing device 7 and is used to axially push the iron core sleeved on the guiding shaft 4 along the guiding shaft 4 located in the assembly position. Specifically, it should be able to axially push the iron core sleeved on the guiding shaft 4 along the guiding shaft 4 located in the assembly position into the first assembly column section 41 and be able to enter the second assembly column section 42 from the first assembly column section 41. That is, when the iron core is sleeved on the guiding shaft 4, the pushing device 1 can push the iron core along the axial direction of the guiding shaft 4 so that it is axially combined with the iron core already existing on the guiding shaft 4.

[0060] In some embodiments, the support platform 6 is disposed opposite to the pressing device 1 for supporting the iron core pushed by the pressing device 1, so that the support platform 6 cooperates with the pressing device 1 to apply extrusion forces to the iron core on both axial sides of the guide shaft 4 respectively, enabling the adjacent iron cores to be better combined with each other under pressure. It should be noted that the support platform 6 can directly or indirectly provide a supporting force to the iron core.

[0061] In some embodiments, the bobbin holder 2 is disposed on the lifting side of the lifting plate for storing coils, so that when in use, the part of the coil that is not combined with the iron core can be temporarily stored to avoid excessive pulling force on the coil. The bobbin holder 2 may include a storage platform, a storage groove, a limiting rod or a limiting tube, etc., and the bobbin holder 2 is preferably closer to the guide shaft 4, but interference with the installation of the iron core on the guide shaft 4 should be avoided. It should be noted that a coil generally consists of a plurality of coil pancakes 8, and a coil is generally formed by winding a wire, so there is still a wire connecting between the plurality of coil pancakes 8. When installing, each coil pancake 8 corresponds to each iron core respectively, that is, first combine the iron core with the corresponding coil pancake 8 to form a combined unit, and then the combined units need to be combined. After the combined unit with the coil pancake 8 is sleeved on the guide shaft 4, the next adjacent coil pancake 8 on the coil can be retained on the bobbin holder 2 at this time. Therefore, the length of the wire between the adjacent coil pancakes 8 should meet the distance requirements of the bobbin holder 2 and the guide shaft 4 in the axial and radial directions.

[0062] In some embodiments, when using the above-mentioned motor stator wire embedding process equipment, first, the operator takes an iron core, then combines it with the coil pancake 8 of the corresponding coil on the bobbin holder 2 to form a combined unit, and installs the combined unit into the first assembly column section 41 of the guide shaft 4. The remaining uncombined coil pancakes 8 are still stored on the bobbin holder 2 without the need to hold them by hand. At this time, if there is already a combined unit on the guide shaft 4, the combined unit will be supported by the support platform 6, and then the pressing device 1 pushes the just-sleeved combined unit towards the support platform 6 to enable the just-sleeved combined unit to be combined with the existing combined unit, and then the pressing device 1 resets to avoid the guide shaft 4. Then take the next iron core, combine it with the coil pancake 8 to form a new combined unit, and then repeat the above installation steps until all the coil pancakes 8 are assembled to form a pre-assembled component. Then, under the action of the pressing device 1, the pre-assembled component on the first assembly column section 41 is pushed into the second assembly column section 42 for correction. In this motor stator wire embedding process equipment, it can be applied to the above-mentioned motor stator wire embedding process equipment, so its specific effects can refer to the motor stator wire embedding process equipment.

[0063] When the pre-assembled component on the first assembly post segment 41 is pushed into the second assembly post segment 42, if there is the above-mentioned tapered guiding segment 43, the tapered guiding segment 43 can correct the position between the first assembly post segment 41 and the second assembly post segment 42.

[0064] In some embodiments, the pressing device 1 can include a pressing head and a telescopic driving device, where the pressing head is detachably connected to the driving end of the telescopic driving device. When in use, when the product models are different, the general performance can be achieved by replacing the pressing head, so as to achieve a better pressing effect. Among them, the pressing head is detachably connected to the driving end of the telescopic driving device, such as by means of threaded connection, snap connection, etc.

[0065] In some embodiments, the pressing head can be a soft pressing head to avoid damaging the iron core, coil, etc., and preferably a smooth pressing head, that is, during manufacturing, the pressing surface of the pressing head can be polished into a smooth pressing head. For example, the pressing head can be a nylon pressing head or a polytetrafluoroethylene pressing head.

[0066] In some embodiments, the telescopic speed and the telescopic stroke of the telescopic driving device can be adjustable. So that according to the different models of coils, iron cores, etc., the telescopic speed and the telescopic stroke can be adjusted. Among them, the telescopic driving device such as an electric cylinder, a cylinder or a hydraulic cylinder, etc. For the electric cylinder, the telescopic speed and the telescopic stroke can be adjusted by adjusting the motor speed and the rotation angle. For the cylinder, the telescopic speed and the telescopic stroke can be adjusted by adjusting the air pressure and the air supply volume of the origin.

[0067] In some embodiments, the coil bobbin 2 can include three storage parts evenly arranged around the assembly position, so as to respectively place the A-phase coil, the B-phase coil and the C-phase coil, so that they do not interfere with each other and conform to the angle positions of the two ends of the coil cakes 8 of each coil. Specifically, the three storage parts can be in a rotationally symmetric relationship with respect to the axis of the guiding shaft 4 at the assembly position. For example, the included angle between them can be about 120 degrees. Of course, the A-phase coil, the B-phase coil and the C-phase coil can also be placed on one storage part for use.

[0068] In some embodiments, when in use, a coil cake 8 of the A-phase coil is combined with the iron core to form an A-phase combined unit, which is loaded into the guiding shaft 4. Then a coil cake 8 of the B-phase coil is combined with the iron core to form a B-phase combined unit, which is loaded into the guiding shaft 4 in sequence. Then a coil cake 8 of the C-phase coil is combined with the iron core to form a C-phase combined unit, which is loaded into the guiding shaft 4 in sequence. Then repeat the above steps to load the A-phase combined unit, the B-phase unit, and the C-phase unit in sequence until the assembly of all the coil cakes 8 and the iron core is completed. Of course, other processes can also be used for assembly.

[0069] In some embodiments, the storage part can be a cartridge, and the inner diameter of the cartridge is preferably equal to the outer diameter of the coil. When in use, the coil can be inserted into the cartridge, and along the axial direction of the cartridge, each coil pancake 8 is arranged in sequence. When in use, the outermost coil pancake 8 moves to the material outlet and exposes a part, and then an iron core is taken out and buckled on the outermost coil pancake 8 to form a combined unit. After moving and sleeving the combined unit on the guide shaft 4, because the adjacent coil pancakes 8 are interconnected by wires, the next coil pancake 8 can be migrated by the wires between them to be pulled out to the material outlet of the cartridge. For better use, the axis of the cartridge can be perpendicular to the axis of the guide shaft 4 at the assembly position. Of course, the material outlet of the cartridge can also be arranged upward or downward. Of course, the cartridge can also be a cylindrical barrel.

[0070] In some embodiments, in order to facilitate better adaptation to the wire lengths between adjacent coil pancakes 8, the motor stator wire embedding process equipment can also include a sliding seat, and the storage part is installed on the sliding seat to be able to move along a direction perpendicular to the guide shaft 4, that is, move radially relative to the guide shaft 4 at the assembly position. When the storage part is a cartridge, it can drive the cartridge to move axially relative to the guide shaft 4 at the assembly position along the axial direction of the cartridge. It should be noted that as described above, when there are three storage parts, three sliding seats can be provided to correspond to the above three storage parts respectively.

[0071] In some embodiments, the storage part can be detachable, such as detaching from the machine frame. When there is a sliding seat, it is preferably detachable from the sliding seat. By making the storage part detachable, when in use, according to the different outer diameters of the coils, the corresponding cartridge can be replaced to better ensure the matching of the inner diameter of the cartridge and the outer diameter of the coil, and further better guide the coil to move along the axial direction of the cartridge. Specifically, the cartridge can be detachably connected by bolts or the like, and can also be detachably connected by a clamping device. For example, it can be detachably fixed by a semi-circular lock. For example, the cartridge can be locked by adjusting the distance of the semi-circular lock. The semi-circular lock mainly includes two cooperating semi-circular jaws and a restraint device that can adjust and restrain the relative distance between the two semi-circular jaws. The semi-circular lock can be installed on the sliding part of the sliding seat.

[0072] In some embodiments, the material storage part can be installed on the sliding seat through an adjusting device to adjust the distance between the material storage part and the sliding seat in the axial direction of the guide shaft 4, and further adjust the positional relationship between the material storage part and the support table 6 in the axial direction. Correspondingly, the material storage part can be detachably connected to the adjusting device. The adjusting device can be a lead screw nut mechanism, a telescopic adjusting rod, etc. Specifically, the adjusting device can include a threaded rod and a nut. The threaded rod is arranged along the axial direction of the guide shaft 4 and passes through the sliding part of the sliding seat along the guide shaft 4, and then the nut is used for limiting to adjust the positional relationship between the threaded rod and the sliding part relative to its axis by rotating the nut. The material storage part is installed on the threaded rod. Correspondingly, it can be installed on the threaded rod through the above-mentioned semi-circular lock.

[0073] In some embodiments, a table lock 5 for clamping and fixing the guide shaft 4 can be installed on the support table 6, so that the guide shaft 4 and the support table 6 can be relatively fixed through the table lock 5 to facilitate the transmission of force between them. The table lock 5 is preferably a clamping device, and of course it can also be a magnetic attraction device. After the guide shaft 4 enters the device, the table lock locks the guide shaft 4 to ensure that the guide shaft 4 does not shake, tilt or the like during the stator wire embedding process.

[0074] In some embodiments, the table lock 5 can include a movable clamping block, a fixed clamping block fixedly installed on the support table 6, and a clamping driving device for driving the movable clamping block to move closer to and farther from the fixed clamping block. The clamping driving device can be a cylinder, a telescopic cylinder, etc. The fixed clamping block and the movable clamping block can both be semi-circular clamping blocks, and of course they can also be V-shaped clamping blocks. Specifically, it can also be a three-jaw chuck.

[0075] In some embodiments, the table lock 5 can be arranged on the lifting side of the support table 6. When in use, the table lock 5 can also be used to support the iron core on the guide shaft 4, so as to realize the indirect support of the support table 6 for the iron core on the guide shaft 4. Specifically, the iron core can be supported by the fixed clamping block and the movable clamping block thereon.

[0076] In some embodiments, it can further include a lifting support device for driving the support table 6 to move along the axial direction of the guide shaft 4. When in use, the positional relationship between the support table 6 and the guide shaft 4 in the axial direction can be adjusted as the number of iron cores assembled on the guide shaft 4 changes. Specifically, when the pushing stroke of the control pushing device 1 remains unchanged, as the number of combined units increases, the support table 6 gradually descends so that the distance between the uppermost combined unit to be pressed and the press head at the initial position remains at a constant value. The lifting support device can adopt mechanisms such as cylinders, electric cylinders, etc.

[0077] In some embodiments, a guide rail for lifting and guiding the support table 6 may also be provided. Further, in order to facilitate the sliding of the support table 6, the guide rail and the support table 6 may be fitted with a linear bearing. Correspondingly, guide rails are provided at each corner of the support table 6. For example, the support table 6 may be a square table, and guide rails are provided at its four corners, and linear bearings are installed in the mating holes on the support table 6. It can ensure that the reinforcement plate is in a horizontal state during static and lifting processes. The support table 6 is preferably a pallet, and a rib plate may be correspondingly provided for reinforcement.

[0078] In some embodiments, an actuating mechanism for driving the fixing device 7 to move in a direction perpendicular to the guide shaft 4 may also be provided to facilitate the lateral movement of the fixing device 7 in and out of the assembly position. The fixing of the fixing device 7 to the guide shaft 4 is a releasable fixing method, so that when moving out of the assembly position, the guide shaft 4 therein can be replaced to facilitate adaptation to different iron cores. Specifically, the fixing device 7 may be a clamping fixing device for clamping and fixing the guide shaft 4, such as a three-jaw chuck. Of course, a magnetic attraction device, a bolt fixing device, etc. may also be used.

[0079] In some embodiments, the actuating mechanism may be a telescopic mechanism, a sliding mechanism, etc., or a combination of a telescopic driving mechanism and a sliding mechanism. The telescopic driving mechanism may be a cylinder, an electric cylinder, etc. The sliding mechanism may be a slide bar, a slide rail, etc. The fixing device 7 may be fixedly connected to a slider on the slide rail by means of bolt connection, clamping connection, etc. The driving source of the fixing device 7 may also be a structure such as a cylinder to drive the jaws to move so as to fix and release the guide shaft 4.

[0080] In some embodiments, in order to better support the iron core by the support table 6 and support the table lock 5, the support table 6 may be provided with a matching U-shaped slot hole to facilitate guiding the guide shaft 4 to enter the middle of the support table 6 laterally and facilitating the lateral removal of the guide shaft 4.

[0081] In some embodiments, a controller 3 may also be correspondingly provided to connect some control panels, some sensors, and some power units, such as being able to control the fixing and releasing of the fixing device 7, the pushing and restoring of the pushing device 1, and the above-mentioned cylinders, telescopic cylinders, etc. By setting the parameters of the stator winding process, including the pressure or moving speed of the pressing device, the moving distance and speed of the pallet, the number of stator iron cores assembled, etc., and then the controller 3 executes according to these parameters to realize the continuous automatic operation of the equipment under manual-assisted operation. The control panel can realize parameter setting and instruction output to achieve human-machine cooperation. Specifically, the controller 3 may establish a control connection with the fixing device 7, the pushing device 1, the table lock 5, the lifting and supporting device, and the actuating mechanism.

[0082] In some embodiments, a limit sensor for detecting whether the guide shaft 4 has moved into the assembly position may be further included. The controller 3 may control the start and stop of the corresponding movable mechanism according to the detection data of the limit sensor.

[0083] In some embodiments, the guide shaft 4 and the inner diameter of the iron core are clearance-matched, and are used to place the assembled iron core and coil cake 8, ensuring that they will not be scattered after assembly, and the stator iron core is in the same axial direction. The upper end of the guide shaft 4 can be processed with a threaded hole for lifting after the stator is embedded with wires, and the upper end of the guide shaft 4 can be chamfered to introduce the iron core and coil cake 8 into the guide shaft 4 without damaging the coil insulation.

[0084] In some embodiments, the stator wire embedding process is as follows: three groups of connected coils are placed on the corresponding barrels at a spatial position of 120°, and a guide shaft 4 is placed at the center of the three groups of coils, which are fixed by a fixing device 7. First, take a piece of iron core and buckle it on the coil cake 8 located at the barrel opening in the A-phase coil, load the iron core and the coil cake 8 into the guide shaft 4 together, start the pushing device 1 downward to press the iron core and the coil cake 8 tightly, then take a piece of iron core and buckle it on the coil cake 8 located at the barrel opening in the B-phase coil, load the iron core and the coil cake 8 into the guide shaft 4 together, start the pushing device 1 downward to press the iron core and the coil cake 8 tightly, then take a piece of iron core and buckle it on the coil cake 8 located at the barrel opening in the C-phase coil, load the iron core and the coil cake 8 into the guide shaft 4 together, start the pushing device 1 downward to press the iron core and the coil cake 8 tightly, and repeat the above operation until the entire stator iron core and coil are assembled.

[0085] In some embodiments, in the above-mentioned motor stator wire embedding process equipment, first, a stator wire embedding device is used to enable one person to complete the stator wire embedding alone; second, the stator wire embedding device can realize multi-directional adjustment of the barrel, which is easy to operate and easy to change and adjust; third, the stator wire embedding device adopts an automatically lifting support platform 6, which can realize automatic lifting during the stator wire embedding process, and at the same time can ensure that the iron core end face of the stator always remains horizontal during the wire embedding process, reducing the amount of runout of the stator end face; fourth, the stator wire embedding device adopts a guide shaft 4 installation device, which can realize automatic clamping and movement of the guide shaft 4, saving manpower and lifting while ensuring the verticality of the guide shaft 4, thereby ensuring that the coil cake 8 is evenly stressed when the pushing device 1 is pressed down.

[0086] In some embodiments, a frame can also be provided, wherein the fixing device 7 is installed at the bottom of the frame through a movable mechanism, wherein the pushing device 1 is installed at the top of the frame, wherein the supporting platform 6 is installed at the middle of the frame through a guide rail and a lifting support device, wherein the coil frame 2 is installed at the middle and upper part of the frame through a sliding seat, and wherein the controller 3 is installed at the outside of the frame.

[0087] In the present specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts among the various embodiments can be referred to each other.

[0088] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for winding coils in a motor stator, characterized in that, it includes the following steps: Respectively buckle each coil pancake of each phase coil with the iron core to form each combined unit, and sequentially sleeved the combined units on the first assembly column section and perform pre-compression to form a pre-combined assembly; Push the pre-combined assembly to the second assembly column section and perform compression, and the diameter of the second assembly column section is larger than that of the first assembly column section; The step of respectively buckling each coil pancake of each phase coil with the iron core to form each combined unit, and sequentially sleeving the combined units on the first assembly column section of the guide shaft and performing pre-compression is: Step 101: After buckling the current coil pancake of the A-phase coil with the iron core, sleeve it on the first assembly column section and compress it; Step 102: After buckling the current coil pancake of the B-phase coil with the iron core, sleeve it on the first assembly column section and compress it; Step 103: After buckling the current coil pancake of the C-phase coil with the iron core, sleeve it on the first assembly column section and compress it; Step 104: Return to Step 101 until the assembly of each phase coil is completed to form the pre-combined assembly.

2. The method for winding coils in a motor stator according to claim 1, characterized in that, The fitting clearance between the first assembly column section and the iron core is between 1.0 mm and 1.5 mm, and the fitting clearance between the second assembly column section and the iron core is between 0.01 mm and 0.07 mm.

3. The method for winding coils in a motor stator according to any one of claims 1 or 2, characterized in that, The leading end of the second assembly column section has a tapered guiding section.

4. A process equipment for winding coils in a motor stator, characterized in that, it includes: A guide shaft, which is sequentially provided with a first assembly column section and a second assembly column section along the leading-in direction, and the diameter of the second assembly column section is larger than that of the first assembly column section; A fixing device for fixing the guide shaft at the assembly position; A pushing device, which is oppositely arranged with the fixing device, and is used to axially push the iron core sleeved on the guide shaft located at the assembly position to enter the first assembly column section, and can enter the second assembly column section from the first assembly column section; A supporting platform, which is oppositely arranged with the pushing device to support the iron core pushed by the pushing device; A coil holder, which is arranged on the lifting side of the lifting plate to store coils.

5. The process equipment for winding coils in a motor stator according to claim 4, characterized in that, The first assembly column section and the second assembly column section are connected by a tapered guiding section.

6. The process equipment for winding coils in a motor stator according to claim 5, characterized in that, The pushing device includes a pressing head and a telescopic driving device, and the pressing head is detachably connected to the driving end of the telescopic driving device; the pressing head is a nylon pressing head or a polytetrafluoroethylene pressing head, and the telescopic speed and telescopic stroke of the telescopic driving device are both adjustable.

7. The process equipment for winding coils in a motor stator according to claim 6, characterized in that, The coil holder includes three material storage parts evenly arranged around the assembly position; it further includes a sliding seat, and the material storage parts are installed on the sliding seat so as to be movable in a direction perpendicular to the guide shaft, and the material storage parts are detachably installed on the sliding seat; the material storage parts are installed on the sliding seat through an adjusting device to adjust the distance of the material storage parts relative to the sliding seat in the axial direction of the guide shaft; the material storage parts are material cylinders.

8. The motor stator wire embedding process equipment according to claim 7, characterized in that a table lock for clamping and fixing the guide shaft is installed on the support table; the table lock includes a movable clamping block, a fixed clamping block fixedly installed on the support table, and a clamping driving device for driving the movable clamping block to move closer to and farther from the fixed clamping block; the table lock is arranged on the lifting side of the support table.

9. The motor stator wire embedding process equipment according to any one of claims 4-8, characterized in that it further includes a guide rail for guiding the lifting of the support table and a lifting support device for driving the support table to move axially along the guide shaft; the guide rail is matched with the support table through a linear bearing; it further includes a moving mechanism for driving the fixing device to move in a direction perpendicular to the guide shaft, the support table is provided with a matching U-shaped slot hole, and the fixing device is a clamping and fixing device for clamping and fixing the guide shaft; it further includes a controller to be able to control the fixing device and the pressing device; it further includes a limit sensor for detecting whether the guide shaft has moved into the assembly position.

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