Hollow cup body forming device and method

Abstract

The invention discloses a hollow cup body forming device and method. According to the invention, the contact pin is adopted for accurate positioning and splicing of the rhombic coil in armature rolling, the consistency of the armature winding in the height direction is ensured, two stages of shaping dies with different sizes are adopted for shaping the armature cup body in the shaping stage, the deformation amount of the armature in the cup body forming stage is accurately controlled, and the production efficiency is improved. Hidden dangers of obvious armature excircle defect projection, poor roundness consistency and enameled wire damage caused by overlarge shaping amount of a hollow cup armature are avoided, in the rough shaping stage, a shaping scheme of fixed shaping of a contact pin is maintained, after rough shaping is completed, an adhesive tape is wound to protect and fix the armature excircle, and then a fine shaping stage is entered. 360-degree full-angle rotation shaping can be achieved in the rough shaping stage and the fine shaping stage, and the consistency, the roundness and the qualified rate of the coreless armature are effectively improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of the preparation of cup-shaped motors, and particularly relates to a cup-shaped body forming device and method for a cup-shaped motor. Background Art

[0002] The diamond-shaped cup-shaped motor belongs to a kind of micro special motor. In terms of structure, it breaks through the traditional stator-rotor structure form of motors and uses a cup-shaped self-supporting winding as the stator and rotor of the motor. This novel stator-rotor structure reduces the static friction torque, mass and moment of inertia of the product, fundamentally eliminates the core eddy current effect, and thus reduces the energy consumption during the operation of the motor. It has good control characteristics and operation characteristics and has been widely used in various servo drive occasions. It is the future development direction of high-performance servo motors. However, the forming process of the cup-shaped winding of the diamond-shaped cup-shaped motor is complex, with strict requirements, low production qualification rate and high manufacturing cost, which is also a problem faced by cup-shaped motors. The traditional manual shaping method for the armature winding of the cup-shaped motor has the disadvantages of low qualification rate, low production efficiency and poor consistency, which restricts the development process of the cup-shaped motor manufacturing technology in China.

[0003] In view of the technical bottlenecks of low forming efficiency, poor roundness of forming dimensions and poor quality consistency existing in the forming method of the armature winding cup body of the military diamond-shaped cup-shaped motor on the market by using the traditional split die and the primary shaping equipment process, there is a need for a precision forming device for the armature cup body that is composed of a forming mandrel, a curling pin, and a combination of a full-angle forming die for rough and fine shaping of the outer circle, as well as a processing technology method for the cup body of the armature winding of the cup-shaped motor, so as to realize the fully automatic forming processing of the armature cup body of the high filling rate diamond-shaped cup-shaped motor, and improve the roundness of the filling rate cup-shaped armature, the consistency of the inner hole and outer circle dimensions, the production efficiency and the product quality.

[0004] The patent document with the publication number CN118353213A discloses a precision finishing machine for a coreless motor coil, including a bottom plate; a motor coil carrying mechanism arranged on the bottom plate, the motor coil carrying mechanism includes a shaping base, a rotating member is rotatably connected to the shaping base, and a mandrel is detachably connected to one end of the rotating member; a pressing mechanism, including two groups of shaping blocks symmetrically installed, a heating mechanism is arranged in the shaping blocks, and the heating mechanism is used to heat the shaping blocks to the required working temperature; during finishing, the motor coil carrying mechanism moves along the first direction until the motor coil is moved between the two groups of shaping blocks, and the two groups of shaping blocks move relatively until the motor coil is clamped. 1. The shaping blocks of this patent document do not have a structure for distinguishing between rough and fine shaping. This application uses a shaping solution of integrating rough and fine shaping with a gradually decreasing gradient of the shaping blocks to solve the problem of poor forming quality of the armature winding caused by excessive shaping amount; 2. This application sets wiring insertion pin holes on the forming mandrel, that is, during the entire shaping process, the (wiring insertion pin) limits the axial and radial directions of the coil, realizing the integrated processing of rough and fine shaping of the forming mandrel and the coreless cup body through the wiring insertion pin, and adding a shaping limiting method for the wiring insertion pin to avoid the influence of extrusion deformation displacement during shaping on the consistency of the armature winding; 3. The number of shaping rotations and the shaping time in this application are adjustable arbitrarily. In this patent document, the number of shaping rotations is 3 times and the shaping time is 2 seconds, while the conventional shaping number in this application is 6 times, rotating once every 60°, and the shaping time and number can be changed according to different product characteristics, and the shaping effect of the armature cup body is better; 4. The shaping output shaft (elastic link shaft in the application book) in this application has the effect of elastic adjustment, while in this patent document it is a rigid rotating shaft. The elastic link shaft proposed in this application can avoid mechanical interference caused by reasons such as the lack of radial displacement adjustment ability of the rigid rotating shaft, poor coaxiality and consistency of the armature cup body during the first shaping, so as to avoid excessive deformation and damage to the enameled wire during the shaping process. And the processing method of this patent document is different from this application. Summary of the Invention

[0005] To solve the above technical problems, the present invention provides a coreless cup body forming device and method.

[0006] The present invention is achieved through the following technical solutions.

[0007] A coreless cup body forming device provided by the present invention includes a mold closing assembly, a connecting assembly, guide posts and a first fixing plate. The mold closing assembly is connected to the first fixing plate. A limiting plate is arranged on the mold closing assembly. The guide posts pass through the limiting plate and are connected to the first fixing plate. The other end of the connecting assembly is connected to the coreless cup body.

[0008] Preferably, the mold clamping assembly includes a mold clamping cylinder, a heating and fixing module, and a forming block module. One end of the telescopic rod of the mold clamping cylinder penetrates through the heating and fixing module and the forming block module and is connected. A limiting member is arranged at the other end of the telescopic rod of the mold clamping cylinder. One side of the heating and fixing module is connected to the forming block module, and the other side of the heating and fixing module is connected to the limiting member. A guide sleeve is arranged on the guide post.

[0009] Preferably, the forming block module includes a pre-forming block and a final forming block, and the pre-forming blocks are respectively arranged at both ends of the final forming block.

[0010] Preferably, a sliding groove is arranged on the heating and fixing module, and the forming block module is placed in the sliding groove and connected in a sliding manner.

[0011] Preferably, the connecting assembly includes an elastic connecting shaft and a forming core shaft. One end of the elastic connecting shaft is connected to the forming core shaft, and the forming core shaft is connected to the hollow cup body.

[0012] Preferably, the elastic connecting shaft includes a limiting connecting shaft and an elastic member, and one end of the connecting shaft is connected to the elastic member.

[0013] Preferably, a sliding groove and a through hole are arranged on the forming core shaft, and the connecting member penetrates through the forming core shaft through the through hole.

[0014] Preferably, a connecting member is arranged at one end of the connecting shaft, the connecting member is connected to the forming core shaft, and a limiting pin is arranged on the connecting member.

[0015] It includes the following steps: Connect the hollow cup body to the forming core shaft, start the heating and fixing module to heat the forming block module, and control the mold clamping cylinder to make the forming block modules on both sides shape the hollow cup body.

[0016] The shaping includes the following steps:

[0017] The first stage:

[0018] S1: Connect the hollow cup body to the forming core shaft, set a pin on the hollow cup body, and adjust the hollow cup body to the position of the pre-forming block at one end of the final forming block through the elastic connecting shaft.

[0019] S2: The telescopic rod of the mold clamping cylinder makes the forming block modules on both sides press the hollow cup body, and the pressing time is 4 - 15 s.

[0020] S3: Open the forming block modules on both sides, rotate the elastic connecting shaft to drive the forming core shaft and the hollow cup body to rotate by a corresponding angle, and repeat the step of S2 until the surfaces of the forming block modules have all been pressed by the forming block modules, and then open the forming block modules on both sides.

[0021] The second stage:

[0022] S4: Adjust the cup body of the cup armature after step S3 to the position of the pre-forming block near the other end of the final forming block;

[0023] S5: The telescopic rod of the die-closing cylinder causes the forming block modules on both sides to press the cup body of the cup armature, and the pressing time is 4 - 15 s;

[0024] S6: Open the forming block modules on both sides. By rotating the elastic link shaft, drive the forming core shaft and the cup body of the cup armature to rotate by a corresponding angle, and repeat the steps of S5 until the surfaces of the forming block modules have all been pressed by the forming block modules, and then open the forming block modules on both sides;

[0025] The third stage:

[0026] S7: Remove the insertion pin, and use tape to wind around the surface of the cup body of the cup armature, and adjust the cup body of the cup armature to the position near the final forming block;

[0027] S8: The telescopic rod of the die-closing cylinder causes the forming block modules on both sides to press the cup body of the cup armature, and the pressing time is 4 - 15 s;

[0028] S9: Open the forming block modules on both sides. By rotating the elastic link shaft, drive the forming core shaft and the cup body of the cup armature to rotate by a corresponding angle, and repeat the steps of S8 until the surfaces of the forming block modules have all been pressed by the forming block modules, and then open the forming block modules on both sides to complete the shaping.

[0029] The beneficial effects of the present invention are as follows:

[0030] 1. The present invention uses the process method of inserting a pin and curling operation to accurately position the forming of the cup armature of the cup armature, and can effectively control the axial displacement of the diamond-shaped cup coil during the shaping process and the overlap of adjacent coils, improving the consistency and qualification rate of the forming of the cup armature winding.

[0031] 2. The present invention divides the forming of the diamond-shaped cup armature winding into rough and fine shaping for control, enabling the cup body of the cup armature winding to achieve feed-type shaping during the shaping process, reasonably controlling the deformation amount of the cup body of the cup armature winding during the shaping process, improving the production qualification rate of the cup armature winding, and effectively ensuring the external dimensions of the cup armature with a high filling rate.

[0032] 3. The elastic connection shaft of the present invention is connected to the forming core shaft of the cup armature of the cup armature. The elastic connection shaft can achieve 360-degree full-angle shaping and elastic displacement during the shaping process, avoiding poor shaping consistency, low roundness, and obvious protrusions and pits defects due to excessive shaping amount, and effectively ensuring the consistency and qualification rate of the cup armature winding with a high filling rate.

[0033] 4. The heating and fixing module of the present invention adopts an operating mode with a controllable temperature range, outputs a specified temperature to the rough and fine shaping copper blocks, and can set appropriate shaping temperatures for self-adhesive enameled wires with different wire diameters, improving the forming efficiency and qualification rate of the hollow cup armature winding. Description of the Drawings

[0034] Figure 1 is a schematic structural view of the present invention;

[0035] Figure 2 is a schematic structural view of the elastic link shaft of the present invention;

[0036] Figure 3 is a schematic structural view of the rough shaping of the forming block module of the present invention;

[0037] Figure 4 is a schematic structural view of the fine shaping of the forming block module of the present invention;

[0038] Figure 5 is a schematic structural view of the forming mandrel of the present invention;

[0039] In the figure: 1: clamping cylinder, 1-1: limit plate, 2: elastic link shaft, 2-1: limit pin, 2-2: connecting shaft, 2-3: elastic member, 2-4: connecting piece, 3: guide post, 4: guide sleeve, 5: first fixing plate, 6: limiting member, 7: heating and fixing module, 7-1: chute, 8: forming block module, 8-1: pre-forming block, 8-2: final forming block, 9: forming mandrel, 9-1: chute, 9-2: through hole, 10: hollow cup body, 11: pin. Detailed Embodiment

[0040] The technical solution of the present invention will be further described below, but the scope of protection is not limited thereto.

[0041] Embodiment:

[0042] As Figures 1 to 5 shown, a hollow cup body forming device includes a clamping assembly, a connecting assembly, a guide post 3 and a first fixing plate 5. The clamping assembly is connected to the first fixing plate 5, and the first fixing plate 5 can be fixed on the workbench. A limit plate 1-1 is arranged on the clamping assembly to limit the movement of the heating and fixing module 7 and the outer circle forming module 8. The guide post 3 passes through the limit plate 1-1 and is connected to the first fixing plate 5. The other end of the connecting assembly is connected to the hollow cup body 10 (hollow cup armature). At least one hollow cup body 10 is provided, and there are at least 6 coils on the hollow cup body 10. Each coil is positioned by a wiring pin 11. The front diamond center and the rear diamond center of two adjacent coils share a wiring pin 11 for positioning, and so on to splice into a circular cup body.

[0043] The present invention uses the process method of coiling and inserting pins to accurately limit the hollow cup coil, and then completes the shaping process of the high-fill-ratio armature winding through the collaborative operation of the forming block, elastic connecting shaft 2 and heating and fixing module 7 in the outer circle forming module 8.

[0044] The mold clamping assembly includes a mold clamping cylinder 1, a heating and fixing module 7 and a forming block module 8. One end of the telescopic rod of the mold clamping cylinder 1 passes through the heating and fixing module 7 and the forming block module 8 and is connected. The other end of the telescopic rod of the mold clamping cylinder 1 is provided with a limiting member 6. One side of the heating and fixing module 7 is connected to the forming block module 8, and the other side of the heating and fixing module 7 is connected to the limiting member 6. A guide sleeve 4 is arranged on the guide post 3. The heating and fixing module 7 heats the corresponding armature enameled wire forming temperature on the hollow cup body 10.

[0045] The forming block module 8 includes a pre-forming block 8-1 and a final forming block 8-2, and the pre-forming blocks 8-1 are respectively arranged at both ends of the final forming block 8-2. The material of the forming block module 8 is copper.

[0046] A chute 7-1 is arranged on the heating and fixing module 7, and the forming block module 8 is placed in the chute 7-1 and is slidably connected.

[0047] The connecting assembly includes an elastic link shaft 2 and a forming mandrel 9. One end of the elastic link shaft 2 is connected to the forming mandrel 9, and the forming mandrel 9 is connected to the hollow cup body 10.

[0048] The elastic link shaft 2 includes a limiting connecting shaft 2-2 and an elastic member 2-3. One end of the connecting shaft 2-2 is connected to the elastic member 2-3, and the elastic member 2-3 can be a spring. The elastic link shaft 2 is connected to a rotating device to drive the elastic link shaft 2 to rotate.

[0049] A chute 9-1 and a through hole 9-2 are arranged on the forming mandrel 9. The chute 9-1 is L-shaped. The forming mandrel 9 is connected to the limiting pin 2-1 through the chute 9-1, and the connecting member 2-4 passes through the forming mandrel 9 through the through hole 9-2.

[0050] A connecting member 2-4 is arranged at one end of the connecting shaft 2-2, the connecting member 2-4 is connected to the forming mandrel 9, and a limiting pin 2-1 is arranged on the connecting member 2-4.

[0051] It includes the following steps: Connect the hollow cup body 10 to the forming mandrel 9, start the heating and fixing module 7 to heat the forming block module 8, and control the mold clamping cylinder 1 to shape the hollow cup body 10 with the forming block modules 8 on both sides.

[0052] The shaping includes the following steps:

[0053] The first stage:

[0054] S1: Connect the cup body 10 of the coreless motor to the forming mandrel 9, set the pin 11 on the cup body 10 of the coreless motor, and adjust the cup body 10 of the coreless motor to the position of the pre-forming block 8-1 near one end of the final forming block 8-2 through the elastic link shaft 2 and align them;

[0055] S2: The telescopic rod of the clamping cylinder 1 enables the forming block modules 8 on both sides to press the cup body 10 of the coreless motor, and the pressing time is 4-15 s, preferably 7 s;

[0056] S3: Open the forming block modules 8 on both sides, rotate the elastic link shaft 2 by 60°, drive the forming mandrel 9 and the cup body 10 of the coreless motor to rotate by corresponding angles, and repeat the steps of S2 for 6 times to rotate 360° until the surfaces of the forming block modules 8 all pass through the pressing of the forming block modules 8 for full-angle shaping, and then open the forming block modules 8 on both sides;

[0057] The second stage:

[0058] S4: Adjust the cup body 10 of the coreless motor that has passed through step S3 to the position of the pre-forming block 8-1 near the other end of the final forming block 8-2 and align them;

[0059] S5: The telescopic rod of the clamping cylinder 1 enables the forming block modules 8 on both sides to press the cup body 10 of the coreless motor, and the pressing time is 4-15 s, preferably 7 s;

[0060] S6: Open the forming block modules 8 on both sides, rotate the elastic link shaft 2 by 60°, drive the forming mandrel 9 and the cup body 10 of the coreless motor to rotate by corresponding angles, and repeat the steps of S5 for 6 times to rotate 360° until the surfaces of the forming block modules 8 all pass through the pressing of the forming block modules 8 for full-angle shaping, and then open the forming block modules 8 on both sides;

[0061] The first stage and the second stage are the rough shaping stages;

[0062] The third stage:

[0063] S7: Remove the pin 11, and use high-temperature resistant tape to wrap the surface of the cup body 10 of the coreless motor to protect the armature surface and avoid damage to the enameled wire by the pre-forming block 8-1 at high temperature during the shaping process; adjust the cup body 10 of the coreless motor to a position where both ends are within the length direction of the final forming block 8-2;

[0064] S8: The telescopic rod of the clamping cylinder 1 enables the forming block modules 8 on both sides to press the cup body 10 of the coreless motor, and the pressing time is 4-15 s, preferably 7 s;

[0065] S9: Open the forming block modules 8 on both sides. By rotating the elastic link shaft 2 by 60°, drive the forming mandrel 9 and the hollow cup body 10 to rotate by corresponding angles, and repeat the steps of S8 six times until the surfaces of the forming block modules 8 have all been pressed by the forming block modules 8. Then open the forming block modules 8 on both sides. This stage is the fine shaping stage, and full-angle shaping is performed to obtain a hollow cup armature cup body with a high coverage rate that meets the technical requirements.

Claims

1. A hollow cup body forming device, characterized in that: The invention comprises a mold clamping assembly, a connecting assembly, a guide column (3) and a first fixed plate (5); the mold clamping assembly is connected to the first fixed plate (5); a limit plate (1-1) is arranged on the mold clamping assembly; the guide column (3) penetrates the limit plate (1-1) and is connected to the first fixed plate (5); the other end of the connecting assembly is connected to a hollow cup body (10).

2. A hollow cup body forming device as claimed in claim 1, characterized in that: The mold clamping assembly comprises a mold clamping cylinder (1), a heating fixed module (7) and a molding block module (8); one end of a telescopic rod of the mold clamping cylinder (1) passes through the heating fixed module (7) and is connected to the molding block module (8); a limit piece (6) is arranged at the other end of the telescopic rod of the mold clamping cylinder (1); one side of the heating fixed module (7) is connected to the molding block module (8); the other side of the heating fixed module (7) is connected to the limit piece (6); and a guide sleeve (4) is arranged on the guide column (3).

3. A hollow cup body forming device as claimed in claim 2, characterized in that: The forming block module (8) comprises a pre-forming block (8-1) and a final forming block (8-2), wherein the pre-forming blocks (8-1) are respectively arranged at both ends of the final forming block (8-2).

4. A hollow cup body forming device as claimed in claim 2, characterized in that: The heating fixed module (7) is provided with a slide groove (7-1), and the forming block module (8) is placed in the slide groove (7-1) for sliding connection.

5. The hollow cup body forming device according to claim 1, characterized in that: The connection assembly comprises an elastic link shaft (2) and a forming mandrel (9), one end of the elastic link shaft (2) is connected to the forming mandrel (9), and the forming mandrel (9) is connected to the hollow cup body (10).

6. A hollow cup body forming device as claimed in claim 5, characterized in that: The elastic link shaft (2) comprises a position-limiting connection shaft (2-2) and an elastic member (2-3); one end of the connection shaft (2-2) is connected to the elastic member (2-3).

7. A hollow cup body forming device as claimed in claim 5, characterized in that: The molding mandrel (9) is provided with a sliding groove (9-1) and a through hole (9-2), and the connecting piece (2-4) passes through the molding mandrel (9) through the through hole (9-2).

8. A hollow cup body forming device as claimed in claim 6, characterized in that: A connecting piece (2-4) is arranged at one end of the connecting shaft (2-2), the connecting piece (2-4) is connected to the forming mandrel (9), and a limiting pin (2-1) is arranged on the connecting piece (2-4).

9. A method for using the hollow cup body forming device according to any one of claims 1 to 9, characterized in that: The method comprises the following steps: connecting a hollow cup body (10) to a forming mandrel (9), starting a heating fixed module (7) to heat a forming block module (8), and controlling a mold clamping cylinder (1) so that the forming block modules (8) on both sides shape the hollow cup body (10).

10. The method for using the hollow cup body forming device according to claim 9, characterized in that: The shaping comprises the following steps: Phase 1: S1: Connect the hollow cup body (10) to the forming mandrel (9), set a pin (11) on the hollow cup body (10), and adjust the hollow cup body (10) to the position of the pre-forming block (8-1) at one end of the final forming block (8-2) through the elastic link shaft (2); S2: The telescopic rod of the mold clamping cylinder (1) enables the molding block modules (8) on both sides to press the hollow cup body (10), and the pressing time is 4 to 15 seconds; S3: Open the forming block modules (8) on both sides, and drive the forming core shaft (9) and the hollow cup body (10) to rotate by a corresponding angle by rotating the elastic link shaft (2), and repeat the steps of S2 until the surfaces of the forming block modules (8) are all pressed by the forming block modules (8), and then open the forming block modules (8) on both sides; Phase 2: S4: adjusting the hollow cup body (10) after step S3 to the position of the pre-molding block (8-1) close to the other end of the final molding block (8-2); S5: The telescopic rod of the mold clamping cylinder (1) enables the molding block modules (8) on both sides to press the hollow cup body (10), and the pressing time is 4 to 15 seconds; S6: Open the forming block modules (8) on both sides, and drive the forming core shaft (9) and the hollow cup body (10) to rotate by a corresponding angle by rotating the elastic link shaft (2), and repeat the step S5 until the surfaces of the forming block modules (8) are all pressed by the forming block modules (8), and then open the forming block modules (8) on both sides; Phase 3: S7: Remove the pin (11), and use tape to wrap it around the surface of the hollow cup body (10), and adjust the hollow cup body (10) to a position close to the final forming block (8-2); S8: The telescopic rod of the mold clamping cylinder (1) enables the molding block modules (8) on both sides to press the hollow cup body (10), and the pressing time is 4 to 15 seconds; S9: Open the forming block modules (8) on both sides, and drive the forming core shaft (9) and the hollow cup body (10) to rotate to a corresponding angle by rotating the elastic link shaft (2), and repeat the step S8 until the surface of the forming block module (8) is pressed by the forming block module (8), and then open the forming block modules (8) on both sides to complete the shaping.

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