Multi-station carbon fiber winding machine for high-speed permanent magnet motor rotor sheath production

Abstract

The invention discloses a multi-station carbon fiber winding machine for high-speed permanent magnet motor rotor sheath production, and belongs to the technical field of high-speed permanent magnet motor rotor sheath production equipment.The multi-station carbon fiber winding machine comprises a prepreg tape pay-off device, a driving rewinding device is sequentially arranged at the side end of the prepreg tape pay-off device, and a tension control device is arranged at the side end of the driving rewinding device; a motor rotor winding platform is arranged at the side end of the tension control device, and the device comprises a dipping tape wire releasing device, a driving rewinding device, the tension control device, a film wire releasing device, the motor rotor winding platform and an automatic feeding and discharging conveying platform. The process steps of winding the carbon fiber and the film can be synchronously carried out, the production speed can be increased as much as possible, the production efficiency is improved, and therefore the production cycle and time cost of an enterprise are reduced.

Description

Technical Field

[0001] The invention relates to the technical field of high-speed permanent magnet motor rotor sleeve production equipment, and more specifically, to a multi-station carbon fiber winding machine for producing high-speed permanent magnet motor rotor sleeves. Background Art

[0002] At present, with the vigorous development of the new energy vehicle industry, the new energy vehicle industry has higher and higher requirements for motor performance, especially in the pursuit of higher speed, greater power and higher efficiency, while also considering the lightweight and battery life of the vehicle. The emergence of carbon fiber rotor sleeves provides an effective solution to these challenges.

[0003] High-speed permanent magnet motors have the advantages of high power density and high efficiency, so they are widely used in centrifugal compressors, flywheel energy storage and other fields. When high-speed motors are running, the rotor components are subjected to huge centrifugal forces, so a surface-mounted permanent magnet rotor structure with a rotor sleeve is often used to ensure the safety of the permanent magnets.

[0004] Common rotor sheath materials mainly include high-strength metal materials (such as titanium alloys, Inconel alloys) and high-strength composite materials (such as carbon fiber, glass fiber, aramid fiber), and their physical properties are very different: metal sheaths have good electrical conductivity, large eddy current losses in the sheaths, but high thermal conductivity, easy heat dissipation of the rotor; fiber sheaths have very low electrical conductivity, almost no eddy currents and losses in the sheaths, but poor thermal conductivity, difficult heat dissipation of the rotor. Therefore, sheath materials have a significant impact on the eddy current losses and temperature rise of high-speed motor rotors.

[0005] Carbon fiber materials, due to their lightweight and high-strength characteristics, can significantly reduce the inertia of the motor, allowing the motor to remain stable when running at high speeds. Tesla's Model S Plaid uses a carbon fiber-coated rotor design, which allows the maximum speed of its motor to exceed 20,000 rpm. This design not only improves the dynamic performance of the vehicle, but also significantly reduces rotor deformation caused by centrifugal force, thereby extending the service life of the motor. With the active follow-up of domestic and foreign automakers, the application prospects of carbon fiber rotors in the field of new energy vehicles are becoming more and more broad, and are expected to become standard for high-performance electric vehicles in the future.

[0006] There are two ways to make a carbon fiber protective cover. One is to directly put it on with a carbon fiber tube, and the other is to wrap carbon fiber prepreg around the rotor surface. The present invention adopts the second method, which can be well applied to various types of rotors, better protect the rotor, and unload the centrifugal force of the magnetic steel.

[0007] The winding process is to wind the continuous fiber (or cloth tape, pre-impregnated yarn) soaked in resin glue onto the core mold according to a certain rule, and then solidify and demould to obtain the product. According to the different physical and chemical states of the resin matrix during fiber winding, it is divided into three processes: dry winding, wet winding and semi-dry winding. Compared with the other two types, the dry winding process is mostly used in high-performance, high-precision cutting-edge technology fields. Its biggest features are clean winding equipment, good processing environment, stable quality of wound products, winding speed of 100m~200m / min, and high production efficiency. However, the dry winding process on the current market has many disadvantages. Among them, the two important processes of winding machine and tape wrapping machine use different equipment, the procurement cost is quite high, and the delivery room occupies too much area. Summary of the invention

[0008] Technical issues to be solved In view of the problems existing in the prior art, the purpose of the present invention is to provide a multi-station carbon fiber winding machine for the production of high-speed permanent magnet motor rotor sheaths. The present invention solves the problems of the existing winding device being complex and poorly adaptable and not matching the winding process, high resin waste rate, and low fiber tension, and simultaneously realizes high-efficiency and environmentally friendly high-tension precision winding. By adopting a guide wheel made of non-stick material, the risk of friction and fuzzing of the prepreg tape is reduced. By using a folding wire release control structure, the width of the prepreg tape is stabilized. By driving the rewinding structure and the tension control structure, the prepreg tape can be wound onto the motor rotor at high speed and with constant ultra-high tension.

[0009] Technical Solution To solve the above problems, the present invention adopts the following technical solutions: A multi-station carbon fiber winding machine for producing a high-speed permanent magnet motor rotor sleeve comprises a prepreg tape unwinding device, a driving rewinding device is sequentially arranged at the side end of the prepreg tape unwinding device, a tension control device is arranged at the side end of the driving rewinding device, a motor rotor winding platform is arranged at the side end of the tension control device, a single-axis gantry slide is arranged at the rear side of the motor rotor winding platform, a film unwinding device is arranged on the left side of the motor rotor winding platform, and an automatic loading and unloading conveying platform is arranged at the front side of the prepreg tape unwinding device.

[0010] As a preferred embodiment of the present invention, the prepreg wire releasing device includes an unwinding spindle, a spindle tensioning rubber ring, a friction disk, a spindle fixing shaft, a friction belt, a tension spring and an adjusting screw. The prepreg wire releasing device fixes the prepreg spindle to the prepreg wire releasing device through the unwinding spindle and the spindle tensioning rubber ring. The unwinding spindle, the spindle tensioning rubber ring and the friction disk are all installed on the spindle fixing shaft. The friction belt is installed on the friction disk. The tension spring and the adjusting screw are both connected to the friction belt.

[0011] As a preferred solution of the present invention, the drive rewinding device includes a drive roller, a drive roller mounting seat, a synchronous gear, a drive motor, a passive roller, a spherical flange seat and a wire bundle, the drive roller is mounted on the drive roller mounting seat, the synchronous gear is mounted on the drive roller mounting seat, the passive roller is arranged on the right side of the drive roller, the wire bundle is wound around the drive roller and the passive roller, the spherical flange seat is mounted on the upper side of the passive roller, and the synchronous gear is mounted on the output end of the drive motor.

[0012] As a preferred solution of the present invention, the motor rotor winding platform includes a rotating headstock, a pneumatic tailstock, a gantry, a single-axis slide, a connecting frame, a drive panel and a film panel. The rotating headstock and the pneumatic tailstock are both installed on the gantry, and the rotating headstock is located on the rear side of the pneumatic tailstock. The drive panel and the film panel are connected to the single-axis slide through the connecting frame.

[0013] As a preferred solution of the present invention, the prepreg unwinding device, the drive rewinding device and the tension control device are all installed on the drive panel.

[0014] As a preferred solution of the present invention, the tension control device and the film unwinding device are both installed on the film panel.

[0015] As a preferred solution of the present invention, the automatic loading and unloading conveying platform includes a double-axis cylinder, a motor rotor, a limit plate and a belt conveyor. The double-axis cylinder is installed at the front end of the belt conveyor, the limit plate is fixedly connected to the belt conveyor, and the motor rotor is arranged in plurality, and the plurality of motor rotors are arranged on the belt conveyor.

[0016] Beneficial Effects Compared with the prior art, the advantages of the present invention are: (1) In this scheme, the present invention is a multi-station carbon fiber winding machine for the production of high-speed permanent magnet motor rotor sleeves, which includes the winding function of prepreg tapes and films onto motor rotors and the automatic loading and unloading of motor rotors after forming, and can realize the continuous production of motor rotor sleeve winding forming as a whole.

[0017] (2) In this solution, the equipment of the present invention can achieve a maximum of 120KG constant tension winding and 80m / min high-speed winding, and the tension and wire width of the prepreg tape are always kept constant, without sliding friction and fuzzing, and the maximum speed is 80m / min. This provides a guarantee for the continuous, automated and stable production of high-tension, high-speed motor rotors.

[0018] (3) In this scheme, the present invention solves the problems of the existing winding device being complex, poorly adaptable, and not matching the winding process, high resin waste rate, and low fiber tension, and simultaneously realizes high-efficiency and environmentally friendly high-tension precision winding. By adopting a guide wheel made of non-stick material, the risk of friction and fuzzing of the prepreg tape is reduced. By using the folding and releasing wire control structure, the width of the prepreg tape is stabilized. By driving the rewinding structure and the tension control structure, the prepreg tape can be wound onto the motor rotor at high speed and with constant ultra-high tension. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the prepreg tape unwinding assembly of the present invention; Figure 3 It is a schematic structural diagram of the driving rewinding device of the present invention; Figure 4 This is a schematic diagram of the structure of the motor rotor winding platform of the present invention; Figure 5 It is a schematic diagram of the structure of the automatic loading and unloading conveying platform of the present invention.

[0020] Description of the numbers in the figure: 1. Prepreg unwinding device; 101. Unwinding spindle; 102. Spindle tensioning rubber ring; 103. Friction disc; 104. Spindle fixing shaft; 105. Friction belt; 106. Tension spring; 107. Adjusting screw; 2. Driving rewinding device; 201. Driving roller; 202. Driving roller mounting seat; 203. Synchronous gear; 204. Driving motor; 205. Passive roller; 206. Spherical flange seat; 207. Fiber bundle; 3. Tensioning Force control device; 4. Film unwinding device; 5. Motor rotor winding platform; 501. Rotating spindle box; 502. Pneumatic tailstock; 503. Gantry; 504. Single-axis slide; 505. Connecting frame; 506. Drive panel; 507. Film panel; 6. Automatic loading and unloading conveying platform; 601. Double-axis cylinder; 602. Motor rotor; 603. Limiting plate; 604. Belt conveyor; 7. Single-axis gantry slide. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] Example: See also Figure 1-5A multi-station carbon fiber winding machine for producing a high-speed permanent magnet motor rotor sheath comprises a prepreg unwinding device 1, a driving rewinding device 2 is sequentially arranged at the side end of the prepreg unwinding device 1, a tension control device 3 is arranged at the side end of the driving rewinding device 2, a motor rotor winding platform 5 is arranged at the side end of the tension control device 3, a single-axis gantry slide 7 is arranged at the rear side of the motor rotor winding platform 5, a film unwinding device 4 is arranged at the left side of the motor rotor winding platform 5, and an automatic loading and unloading conveying platform 6 is arranged at the front side of the prepreg unwinding device 1.

[0023] In this embodiment, the prepreg unwinding device includes an unwinding spindle and a friction belt, and the friction belt provides initial tension during the prepreg unwinding process; the drive rewinding device includes a set of drive rollers, a set of passive rollers, etc., which are used to provide driving force for the filament bundle to move forward and give the filament bundle an increased tension value; the tension control device is composed of a weighing sensor and a guide wheel, which controls the tension value of the filament bundle winding process; the film unwinding device includes an unwinding spindle and a friction belt, and the friction belt provides initial tension during the film unwinding process; the motor rotor winding platform includes an electronic rotor fixing and rotating device, and a reciprocating drive device of the front end winding assembly; the automatic loading and unloading conveying platform is composed of a cylinder and a conveyor, and the cylinder is used for automatic loading and unloading of the motor rotor, and the conveyor transfers the formed motor rotor to the next step.

[0024] Furthermore, the automatic loading and unloading conveyor belt uses a conveyor belt to transport incoming materials. After reaching the specified position, it is pushed to the motor rotor winding platform by a cylinder.

[0025] Furthermore, the prepreg unwinding device adopts a folded unwinding structure, and the unwinding axis is parallel to the wire path, so that the wire bundle offsets the reciprocating process of the unwinding process during the unwinding process, reduces the friction and fuzzing of the prepreg tape and makes the overall wire width uniform during the prepreg unwinding process.

[0026] Furthermore, the weighing sensor is responsible for detecting the current tension value of the tow, and can be linked with the motor rotor fixed rotation device to accurately control the tension value of the tow. The detected tension value can be displayed on the screen as a curve to observe the tension fluctuation.

[0027] Furthermore, the motor rotor fixing device is used to fix the motor rotor during the winding process, with a pneumatic clamping claw on one side and a pneumatic tailstock on the other side, and a pneumatic control system completes the automatic installation, fixing and disassembly of the motor rotor.

[0028] Furthermore, the motor rotor rotating device is used for the axial rotation of the motor rotor during the winding process, and adopts a servo system to accurately control the rotation speed of the rotor.

[0029] Furthermore, the reciprocating drive device of the front-end winding assembly connects the winding assembly consisting of the front-end prepreg tape unwinding device, the driving rewinding device, the tension control device, and the film unwinding yarn rack to the motor rotor winding platform, thereby completing the horizontal winding of the prepreg tape and the film on the motor rotor.

[0030] Furthermore, the automatic loading and unloading conveying platform adopts a conveyor belt to transport the unloading materials. After reaching the designated position, the cylinder pushes them to the motor rotor winding platform.

[0031] Specifically, the prepreg wire unwinding device 1 includes an unwinding spindle shaft 101, a spindle shaft tensioning rubber ring 102, a friction disk 103, a spindle shaft fixing shaft 104, a friction belt 105, a tension spring 106 and an adjusting screw 107. The prepreg wire unwinding device 1 fixes the prepreg spindle to the prepreg wire unwinding device 1 through the unwinding spindle shaft 101 and the spindle shaft tensioning rubber ring 102. The unwinding spindle shaft 101, the spindle shaft tensioning rubber ring 102 and the friction disk 103 are all installed on the spindle shaft fixing shaft 104. The friction belt 105 is installed on the friction disk 103. The tension spring 106 and the adjusting screw 107 are both connected to the friction belt 105.

[0032] In this embodiment, the friction disc 103 generates mutual friction with the friction belt 105 to give the prepreg an initial tension. By adjusting the screw 107, the tension spring 106 generates different tensions, so that the friction between the friction disc 103 and the friction belt 105 changes, thereby adjusting the tension value of the prepreg.

[0033] Specifically, the driving rewinding device 2 includes a driving roller 201, a driving roller mounting seat 202, a synchronous gear 203, a driving motor 204, a passive roller 205, a spherical flange seat 206 and a filament bundle 207. The driving roller 201 is mounted on the driving roller mounting seat 202, the synchronous gear 203 is mounted on the driving roller mounting seat 202, the passive roller 205 is arranged on the right side of the driving roller 201, the filament bundle 207 is wound around the driving roller 201 and the passive roller 205, the spherical flange seat 206 is mounted on the upper side of the passive roller 205, and the synchronous gear 203 is mounted on the output end of the driving motor 204.

[0034] In this embodiment, the filament bundle 207 is wound back and forth between the driving roller 201 and the passive roller 205 to obtain a high tension value. The driving roller 201 is installed on the driving roller mounting seat 202, and rotates with the driving motor 204 through the synchronous gear 203. The passive roller 205 is installed on the spherical flange seat 206. The spherical flange seat 206 can make the passive roller 205 and the driving roller 201 form a fixed angle. The angle allows the filament bundle 207 to wind back and forth between the two rollers to maintain the stability of the path. Further, the filament bundle is wound back and forth between the driving roller and the passive roller, and the filament bundle will obtain a larger tension. The tension range of the filament bundle is controlled by controlling the number of winding turns; further, Teflon anti-stick coating is used on the surface of the driving roller and the passive roller to prevent the prepreg tape from sticking to the roller surface.

[0035] Specifically, the motor rotor winding platform 5 includes a rotating spindle box 501, a pneumatic tailstock 502, a gantry 503, a single-axis slide 504, a connecting frame 505, a drive panel 506 and a film panel 507. The rotating spindle box 501 and the pneumatic tailstock 502 are both installed on the gantry 503, and the rotating spindle box 501 is located on the rear side of the pneumatic tailstock 502. The drive panel 506 and the film panel 507 are connected to the single-axis slide 504 through the connecting frame 505.

[0036] In this embodiment, the rotating spindle box 501 and the pneumatic tailstock 502 are tightened at the same time to complete the fixation of the motor rotor 602. The motor rotor fixing device is connected to the rotor driving motor through a belt, and the driving motor rotates to drive the motor rotor to rotate axially. When the winding is completed, the whole workpiece is rotated to the film wrapping station, and after the film wrapping is completed, the motor rotor is completed. In the next step, the whole workpiece is rotated to the unloading position. The unloading position and the loading position overlap. Therefore, after the unloading is completed, the loading process follows. After the whole workpiece rotates to the specified position, winding carbon filaments, film wrapping, unloading and loading can be carried out simultaneously.

[0037] Specifically, the prepreg unwinding device 1 , the drive rewinding device 2 and the tension control device 3 are all installed on the drive panel 506 .

[0038] In this embodiment, the prepreg unwinding device 1 , the drive rewinding device 2 and the tension control device 3 are all installed on the drive panel 506 .

[0039] Specifically, the tension control device 3 and the film unwinding device 4 are both installed on the film panel 507 .

[0040] In this embodiment, the tension control device 3 and the film unwinding device 4 are both installed on the film panel 507 .

[0041] Specifically, the automatic loading and unloading conveying platform 6 includes a dual-axis cylinder 601, a motor rotor 602, a limit plate 603 and a belt conveyor 604. The dual-axis cylinder 601 is installed at the front end of the belt conveyor 604, the limit plate 603 is fixedly connected to the belt conveyor 604, and the motor rotor 602 is set to multiple, and multiple motor rotors 602 are all set on the belt conveyor 604.

[0042] In this embodiment, the automatic loading and unloading conveying platform uses a conveyor belt to transport the unloading materials. After reaching the specified position, the cylinder pushes them to the motor rotor winding platform.

[0043] Working principle: The invention is a multi-station carbon fiber winding machine for the production of high-speed permanent magnet motor rotor sleeves, including the winding function of prepreg tape and film to the motor rotor and the automatic loading and unloading after the motor rotor is formed, which can realize the continuous production of motor rotor sleeve winding molding as a whole; the equipment of the invention can achieve up to 120KG constant tension winding, 80m / min high-speed winding, and the tension and wire width of the prepreg tape are always kept constant, there is no sliding friction and fuzzing phenomenon, and the maximum speed is 80m / min. It provides a guarantee for the continuous, automated and stable production of high-tension, high-speed motor rotors; the invention aims at the problems of the existing winding device being complex and poorly adaptable, not matching the winding process, high resin waste rate, low fiber tension, etc., and simultaneously realizes efficient and environmentally friendly high-tension precision winding. By adopting a guide wheel made of non-stick material, the risk of friction and fuzzing of the prepreg tape is reduced. By using the folding wire release control structure, the stability of the prepreg tape width is achieved. By driving the rewinding structure and the tension control structure, the prepreg tape can be wound onto the motor rotor at high speed and with ultra-high constant tension.

[0044] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and improved concepts of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A multi-station carbon fiber winding machine for producing a high-speed permanent magnet motor rotor sheath, comprising a prepreg unwinding device (1), characterized in that: The side ends of the prepreg tape unwinding device (1) are sequentially provided with a driving rewinding device (2), the side ends of the driving rewinding device (2) are provided with a tension control device (3), the side ends of the tension control device (3) are provided with a motor rotor winding platform (5), the rear side of the motor rotor winding platform (5) is provided with a single-axis gantry slide (7), the left side of the motor rotor winding platform (5) is provided with a film unwinding device (4), and the front side of the prepreg tape unwinding device (1) is provided with an automatic loading and unloading conveying platform (6).

2. According to claim 1, a multi-station carbon fiber winding machine for producing a high-speed permanent magnet motor rotor sheath is characterized in that: The prepreg unwinding device (1) comprises an unwinding spindle shaft (101), a spindle shaft tightening rubber ring (102), a friction disk (103), a spindle shaft fixing shaft (104), a friction belt (105), a tension spring (106) and an adjusting screw (107). The prepreg unwinding device (1) fixes the prepreg spindle to the prepreg unwinding device (1) via the unwinding spindle shaft (101) and the spindle shaft tightening rubber ring (102). The unwinding spindle shaft (101), the spindle shaft tightening rubber ring (102) and the friction disk (103) are all mounted on the spindle shaft fixing shaft (104). The friction belt (105) is mounted on the friction disk (103). The tension spring (106) and the adjusting screw (107) are both connected to the friction belt (105).

3. The multi-station carbon fiber winding machine for producing a high-speed permanent magnet motor rotor sheath according to claim 2 is characterized in that: The drive rewinding device (2) comprises a drive roller (201), a drive roller mounting seat (202), a synchronous gear (203), a drive motor (204), a passive roller (205), a spherical flange seat (206), and a filament bundle (207); the drive roller (201) is mounted on the drive roller mounting seat (202); the synchronous gear (203) is mounted on the drive roller mounting seat (202); the passive roller (205) is arranged on the right side of the drive roller (201); the filament bundle (207) is wound around the drive roller (201) and the passive roller (205); the spherical flange seat (206) is mounted on the upper side of the passive roller (205); and the synchronous gear (203) is mounted on the output end of the drive motor (204).

4. The multi-station carbon fiber winding machine for producing a high-speed permanent magnet motor rotor sheath according to claim 3 is characterized in that: The motor rotor winding platform (5) comprises a rotating spindle box (501), a pneumatic tailstock (502), a gantry (503), a single-axis slide (504), a connecting frame (505), a driving panel (506) and a film panel (507); the rotating spindle box (501) and the pneumatic tailstock (502) are both mounted on the gantry (503), and the rotating spindle box (501) is located at the rear side of the pneumatic tailstock (502); and the driving panel (506) and the film panel (507) are connected to the single-axis slide (504) via the connecting frame (505).

5. The multi-station carbon fiber winding machine for producing a high-speed permanent magnet motor rotor sheath according to claim 4, characterized in that: The prepreg tape unwinding device (1), the drive rewinding device (2) and the tension control device (3) are all installed on the drive panel (506).

6. The multi-station carbon fiber winding machine for producing a high-speed permanent magnet motor rotor sheath according to claim 5, characterized in that: The tension control device (3) and the film unwinding device (4) are both installed on the film panel (507).

7. The multi-station carbon fiber winding machine for producing a high-speed permanent magnet motor rotor sheath according to claim 6, characterized in that: The automatic loading and unloading conveying platform (6) comprises a double-axis cylinder (601), a motor rotor (602), a limit plate (603) and a belt conveyor (604), wherein the double-axis cylinder (601) is installed at the front end of the belt conveyor (604), the limit plate (603) is fixedly connected to the belt conveyor (604), and the motor rotor (602) is arranged in plurality, and the plurality of motor rotors (602) are all arranged on the belt conveyor (604).

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