Automatic gluing, detecting and assembling equipment for magnetic steel of disc type motor

Abstract

Automatic gluing, detecting and assembling equipment for magnetic steel of a disc type motor comprises a rack, a rotary positioning mechanism, gluing devices, assembling devices and a heating and shaping device, the rotary positioning mechanism, the gluing devices, the assembling devices and the heating and shaping device are arranged on the rack, the gluing devices and the two assembling devices are distributed on the periphery of the rotary positioning mechanism, and the heating and shaping device is located above the rotary positioning mechanism. The gluing mechanism is used for quantitatively gluing the magnetic steel grooves for mounting the magnetic steel on the rotor yoke, then the assembling device is used for pushing the magnetic steel into the magnetic steel grooves on the rotor yoke, and finally the heating and shaping device is used for heating and shaping each magnetic steel. The automatic magnetic steel assembling machine is high in automation degree and magnetic steel assembling efficiency, avoids potential safety hazards, avoids damage caused by direction errors of magnetic steel, avoids human error rate, ensures product consistency, avoids potential safety hazards, thoroughly avoids phase angle deviation between the magnetic steel when a retainer is taken down immediately after the magnetic steel is assembled, and improves the assembling efficiency of the magnetic steel. The production cost is reduced, and the assembly quality is improved.

Description

Technical Field

[0001] This utility model relates to a device for automatically applying glue, inspecting and assembling magnets in a disc motor, belonging to the field of disc motor manufacturing technology. Background Technology

[0002] A disc motor (disc flux motor) is a device that converts electrical energy into mechanical energy by generating a magnetic field between the stator and rotor. It mainly consists of a housing, stator, rotor, and shaft. The shaft is mounted in the housing via bearings and connected to the rotor, with one end extending out of the housing. The rotor comprises two rotor yokes and magnets (patented permanent magnets) located inside the rotor yokes. The stator and rotor are housed within the housing, with the stator positioned inside the rotor (between the two rotor yokes), and an air gap exists between them. Magnet assembly is a crucial step in the disc motor rotor assembly process, especially in multi-rotor disc motors. The magnets are distributed on the rotor yokes via magnet cages. The magnet cages have multiple open magnet slots. Glue is applied to the magnet slots, and the magnets are then assembled. The number of magnet slots and magnets corresponds to the number of poles of the motor rotor. The angular position of the magnet cages is consistent with the position of the rotor yokes, and both are positioned using locating pins. The performance of a disc motor is closely related to the assembly of magnets, the amount of adhesive applied, the phase angle between magnets, the accuracy of magnet polarity, and the flatness of the magnets after assembly. These factors directly determine the performance of the disc motor.

[0003] Existing magnet assembly technology and its problems:

[0004] 1. Assembly is done manually, resulting in low precision, slow speed, and easy damage.

[0005] 2. Most of the rotor magnets of disc motors are made of neodymium iron boron strong magnets, which can easily pinch and injure workers during assembly, causing safety problems.

[0006] 3. The magnets are surface-mounted, and errors can easily occur when manually checking the polarity of the magnets before assembly. Once the polarity is incorrect, the magnets are difficult to disassemble.

[0007] 4. During manual assembly, glue leakage often occurs, which directly affects the assembly quality of the magnets.

[0008] 5. When the cage is removed after the magnets are assembled, phase angle shift between the magnets is likely to occur. Utility Model Content

[0009] This invention addresses the problems existing in the magnet assembly technology of existing disc motors by providing an automatic gluing and testing assembly equipment for disc motor magnets with high assembly accuracy and efficiency.

[0010] The automatic gluing, testing, and assembly equipment for disc motor magnets of this utility model adopts the following technical solution:

[0011] The equipment includes a frame and a rotation positioning mechanism, an adhesive application device, an assembly device, and a heating and curing device mounted on the frame. The adhesive application device and two sets of assembly devices are distributed around the rotation positioning mechanism, with the heating and curing device positioned above it. The adhesive application device applies a measured amount of adhesive to the magnet slots on the rotor yoke where magnets are mounted. The assembly device then pushes the magnets into these slots. The two sets of assembly devices assemble magnets of different polarities (N-pole magnets and S-pole magnets) respectively. Finally, the heating and curing device heats and cures each magnet.

[0012] The rotational positioning mechanism includes a rotational mechanism and a rotating frame, with the rotating frame mounted on the machine frame and connected to the rotational mechanism. The rotational mechanism includes a servo motor and a reducer; the power input end of the reducer is connected to the servo motor, and the rotating frame is connected to the power output end of the reducer. The servo motor drives the rotating frame to rotate, causing the rotor yoke fixed on the rotating frame to rotate by a certain angle during gluing, assembly, or fixing processes, thus achieving high-precision rotational positioning control.

[0013] The adhesive application device includes an adhesive tank, a metering valve, a push-pull mechanism, and a nozzle. The adhesive tank, metering valve, and push-pull mechanism are all mounted on a frame. The adhesive tank, metering valve, and nozzle are connected sequentially via pipelines, and the nozzle is connected to the push-pull mechanism. The push-pull mechanism uses an adhesive application cylinder, mounted on the frame. If the stroke of the adhesive application cylinder is insufficient, an adhesive application rod can be connected to the piston rod of the cylinder, and the nozzle is mounted on the application rod. The push-pull mechanism (adhesive application cylinder) pushes the nozzle to the adhesive application position, and the metering valve quantitatively delivers the adhesive from the adhesive tank to the nozzle, spraying it onto the magnet.

[0014] The assembly device includes a hopper and a pushing mechanism, both mounted on a frame. The hopper has a discharge port at its bottom, and the pushing mechanism is located outside the discharge port. The hopper contains a conformal magnet rack for storing magnets, ensuring they are placed in a fixed orientation. The pushing mechanism uses a pushing cylinder or servo electric cylinder; if the pushing stroke is insufficient, a non-magnetic pushing rod can be connected. The assembly device also includes two opposing guide mechanisms. Each guide mechanism includes a guide block and a guide rod. The guide rod is mounted on the frame, and the guide block is fitted onto the guide rod. A guide spring is installed between the guide block and the frame, allowing the guide block to reset under the spring's action as it moves on the guide rod. The assembly device also includes a magnetic pole detection mechanism. This mechanism uses a magnetic pole detection sensor, mounted on the frame and located below the discharge port at the bottom of the hopper, for detecting the polarity of the magnets. The pushing mechanism pushes the last magnet in the hopper along the guide mechanism to the corresponding magnet position in the rotor yoke. During the pushing process, the magnetic pole detection sensor detects the polarity of the magnet. If the polarity is incorrect, an alarm is triggered. After the pushing mechanism returns, the magnet in the hopper falls, and the rotation positioning mechanism drives the rotor yoke to rotate to the next magnet installation position. The above process is repeated until all magnets on the rotor yoke are assembled, realizing automatic magnet pushing and positioning.

[0015] The heating and fixing device includes a lifting mechanism, a heating element, and a pressure plate. The lifting mechanism is mounted on a frame, the heating element is connected to the lifting mechanism, and the pressure plate is connected to the moving end of the lifting mechanism and to the heating element. The lifting mechanism includes a lifting frame, a lifting unit, and a guide sleeve. The lifting frame is mounted on the frame, and a guide sleeve is provided on the lifting frame. A guide rod is fitted inside the guide sleeve. The lifting unit is mounted on the lifting frame, and the pressure plate is connected to the lifting unit. The lifting unit uses a cylinder (fixing cylinder), and its piston rod is connected to the pressure plate (or heating frame). The guide rod has a hollow structure, and the heating element passes through the inner hole of the guide rod and connects to the pressure plate. The heating element is an electric heating element, such as an electric heating belt, an electric heating tube, or a PTC heater. The pressure plate is mounted on the heating frame, which is connected to the heating element and to the moving end of the lifting mechanism. The shape of the pressure plate is consistent with the shape of the magnet. The pressure plate is heated by a heating element, and the lifting mechanism drives the heating element and the pressure plate to move downwards, so that the pressure plate presses onto the magnets for heating and shaping. After a set time, the pressure plate rises, completing the shaping of the magnets. The rotation of the rotation positioning mechanism heats and shapes each magnet on the rotor yoke.

[0016] This invention boasts a high degree of automation and efficient magnet assembly, avoiding the safety hazards associated with manual assembly in existing technologies, as well as damage caused by incorrect magnet orientation. It eliminates manual inspection and gluing, minimizing human error, ensuring product consistency, and reducing safety risks associated with manual assembly. The heat-curing method completely eliminates the phase angle misalignment between magnets that occurs when the cage is removed immediately after assembly. This improves production efficiency, reduces production costs, and enhances assembly quality. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the automatic gluing, testing, and assembly equipment for disc motor magnets of this utility model.

[0018] Figure 2 This is the main structural view of the automatic gluing, testing, and assembly equipment for disc motor magnets of this utility model.

[0019] Figure 3 This is a left view of the structure of the automatic gluing, testing and assembly equipment for disc motor magnets of this utility model.

[0020] Figure 4 This is a top view of the structure of the automatic gluing, testing and assembly equipment for disc motor magnets of this utility model.

[0021] Figure 5 This is a schematic diagram of the guiding mechanism in the assembly device of this utility model.

[0022] In the diagram: 100. Frame, 101. Servo motor, 102. Reducer, 103. Rotor, 104. Magnet cage, 105. Rotor yoke, 106. Positioning pin;

[0023] 200. Adhesive container; 201. Metering valve; 202. Adhesive application cylinder; 203. Adhesive application rod; 204. Nozzle;

[0024] 300. Hopper, 301. Magnet, 302. Pushing cylinder, 303. Pushing rod, 400. Guide block, 401. Guide spring, 402. Guide rod, 403. Magnetic pole detection sensor;

[0025] 500. Lifting frame, 503. Heating element, 504. Heating frame, 505. Pressure plate, 506. Guide rod. Detailed Implementation

[0026] This utility model discloses an automatic gluing, inspection, and assembly equipment for disc motor magnets, comprising a rotation positioning mechanism, a gluing device, an assembly device, and a heating and curing device. During operation, the gluing mechanism applies a quantitative amount of glue to the magnet slots on the rotor yoke where magnets are mounted. After one magnet slot is glued, the rotation positioning mechanism rotates the next slot to the gluing position, thus completing the gluing of all magnet slots. The assembly device then pushes the magnets into the magnet slots on the rotor yoke, guiding the magnets and detecting their polarity during the pushing process. The rotation positioning mechanism drives the rotor yoke to rotate, ensuring that each magnet slot is in the pushed-in position, achieving full placement of magnets in all slots. Finally, the heating and curing device heats and cures each magnet accordingly.

[0027] The following is a detailed description of each part in conjunction with the accompanying drawings.

[0028] The rotation positioning mechanism is fixedly mounted on the frame 100 and is used to fix the rotor yoke 105 and the magnet cage 104. The magnet cage 104 has multiple open magnet slots. Glue is applied to the magnet slots and magnets are assembled. The number of magnet slots and magnets is consistent with the number of poles of the motor rotor. The angular position of the magnet cage 104 is consistent with the position of the rotor yoke 105. The two are positioned by a positioning pin 106 using a one-sided two-pin positioning method.

[0029] See Figure 1 and Figure 2 The rotation positioning mechanism includes a rotation mechanism and a rotating frame 103. The rotation mechanism includes a servo motor 101 and a reducer 102. The power input end of the reducer 102 is connected to the servo motor 101, and the rotating frame 103 is connected to the power output end of the reducer 102. The rotating frame 103 is mounted on the frame 100. The rotor yoke 105 is fixed on the rotating frame 103. The servo motor 101 drives the reducer 102 to decelerate the rotating frame 103, achieving high-precision rotation positioning control. During the gluing, assembly, or fixing processes, the rotation positioning mechanism is needed to rotate the rotor yoke fixed on the rotating frame by a certain angle, so that the corresponding position on the rotor yoke is in the processing position.

[0030] See Figure 1 , Figure 3 and Figure 4 The adhesive application device includes an adhesive tank 200, a metering valve 201, an adhesive application cylinder 202, an adhesive application rod 203, and a nozzle 204. The adhesive tank 200, metering valve 201, and adhesive application cylinder 202 are all mounted on a frame 100. The adhesive application cylinder 202 is a guide cylinder. One end of the adhesive application rod 203 is connected to the piston rod of the cylinder 202, and the nozzle 204 is installed at the other end of the adhesive application rod 203. The nozzle 204 is connected to the metering valve 201 via a delivery pipe, and the metering valve 201 is connected to the adhesive tank 200 via a pipeline. The metering valve 201 is existing technology and enables quantitative control of the adhesive.

[0031] The piston rod of the adhesive application cylinder 202 extends, pushing the nozzle 204 to the adhesive application position via the adhesive application rod 203. The adhesive from the adhesive tank 200 is metered and delivered to the nozzle 204 through the metering valve 201, spraying it onto the magnetic slots on the magnetic retainer 104. The adhesive application cylinder 202 controls the reciprocating motion of the nozzle 204, achieving metered adhesive application at the magnet positions on the rotor yoke 105. After adhesive application is completed in one magnetic slot, the servo motor 101 is activated, driving the rotor frame 103, rotor yoke 105, and magnetic retainer 104 to rotate, positioning the next magnetic slot on the magnetic retainer 104 for adhesive application. This process is repeated for all magnetic slots. This adhesive application mechanism, applied to disc rotor magnet assembly, eliminates the need for manual adhesive application, integrating adhesive application and assembly into a single machine.

[0032] See Figure 1 and Figure 2 Two sets of assembly devices are installed opposite each other on the frame 100 for assembling magnets of different polarities. The two sets of assembly devices have identical structures, including a hopper 300, a pushing mechanism, a guiding mechanism, and a magnetic pole detection mechanism mounted on the frame 100. The hopper 300 contains a conforming magnet frame, allowing the magnets to fall at fixed positions. Several magnets 301 are stored at a time on the magnet frame. A discharge port is located at the bottom of the hopper 300. The pushing mechanism pushes the last magnet in the hopper 300 out of the discharge port. The magnets in the hopper 300 fall sequentially by gravity. The hoppers in the two sets of assembly devices store N-pole magnets and S-pole magnets, respectively. The pushing mechanism includes a pushing cylinder 302 and a pushing rod 303. The pushing cylinder 302 is mounted on the frame 100, and the pushing rod 303 is connected to the piston rod of the pushing cylinder 302. The pushing cylinder 302 is a guide cylinder, and the pushing rod 303 is a non-magnetic component. The push cylinder 302 can also be replaced by a servo electric cylinder. See [link / reference] Figure 5 The guiding mechanism comprises two identical sets, each including a guide block 400 and a guide rod 402. The guide rod 402 is horizontally mounted on the frame 100, and the guide block 400 is fitted onto the guide rod 402 and can move along it. A guide spring 401 is positioned between the guide block 400 and the frame 100, allowing the guide block 400 to return to its original position as it moves along the guide rod 402. In both guiding mechanisms, the opposing surfaces of the guide blocks 400 are inclined, forming a pointed groove that is smaller at the front and larger at the back. The magnet 301 is pushed within this groove, and during this process, the guide block 400 moves along the guide rod 402, remaining in contact with the magnet 301 to provide guidance. This elastic guiding mechanism solves the problem of guiding and positioning the magnet during the pushing process.

[0033] The aforementioned elastic guiding mechanism solves the problem of guiding and positioning the magnet during the pushing process. The magnetic pole detection mechanism uses a magnetic pole detection sensor 403, which is installed on the frame 100 and located at the discharge port of the hopper 300. It is used to detect the polarity of the magnet. When an abnormality occurs (incorrect magnet polarity or no polarity), the equipment stops working and issues an alarm.

[0034] The piston rod of the push cylinder 302 extends, pushing the next magnet in the hopper 300 via the push rod 303. The magnet moves along the guide block 400 into the magnet slot on the magnet holder 104, that is, to the corresponding magnet position on the rotor yoke 105. During the pushing process, the magnetic pole detection sensor 403 detects the magnet polarity; if the polarity is incorrect, an alarm is triggered. After a magnet is placed in a magnet slot, the piston rod of the push cylinder 302 drives the push rod 303 back, and the magnet in the hopper 300 falls, preparing for the next magnet push. The servo motor 101 is started, driving the rotating frame 103, rotor yoke 105, and magnet holder 104 to rotate, so that the next magnet slot on the magnet holder 104 is in the pushing position, and the magnet is pushed in the same way. This process continues until all magnet slots are filled, achieving automatic magnet pushing and positioning.

[0035] See Figure 1 and Figure 2 The heating and fixing device consists of a lifting mechanism, a heating element 503, a heating frame 504, and a pressure plate 505. The lifting mechanism is mounted on the frame 100. The heating element 503 is connected to the lifting mechanism, the heating frame is connected to the moving end of the lifting mechanism, and the pressure plate 505 is connected to the heating frame 504 and to the heating element 503. The shape of the pressure plate 505 is consistent with the shape of the magnet. The lifting mechanism includes a lifting frame 500, a fixing cylinder 501, and a guide sleeve 502. The lifting frame 500 is provided with a guide sleeve 502, and a guide rod 506 is fitted inside the guide sleeve 502. The guide rod 506 has a hollow structure. The heating element 503 passes through the inner hole of the guide rod 506 and is connected to the heating frame 504. The fixing cylinder 501 is vertically mounted on the lifting frame 500, and its piston rod is connected to the heating frame 504. The fixing cylinder 501 can be controlled by a servo mechanism. Heating element 503 is electrically heated and can be a heating belt, heating tube, or PTC, etc. Temperature is automatically controlled by PID to ensure that magnets of different thicknesses are cured at different temperatures. Two assembly devices are used to assemble the N-pole magnet and the S-pole magnet respectively.

[0036] After all the magnets in the rotor yoke 104 are placed by the assembly device, the pressing plate 505 is heated by the heating element 503. The piston rod of the fixing cylinder 501 extends, causing the heating frame 504 to descend. The pressing plate 505 presses on the magnets for heating and fixing. After the set time is reached, the piston rod of the fixing cylinder 501 retracts, and the pressing plate 505 rises, completing the fixing of the magnets.

[0037] Once a magnet has been solidified, the servo motor 101 is started to drive the rotating frame 103, rotor yoke 105, and magnet retainer 104 to rotate, so that the magnet in the next magnet slot is in the heating and solidification position. The heating and solidification process is repeated until all magnets have been heated and solidified. This eliminates the need for subsequent heat treatment and curing processes, improves assembly production efficiency, and solves the problem of magnet misalignment after assembly through this heating and solidification method.

Claims

1. An automatic gluing, testing, and assembly equipment for disc-type motor magnets, characterized in that, It includes a frame and a rotating positioning mechanism, an adhesive applicator, an assembly device, and a heating and curing device mounted on the frame. The rotating positioning mechanism is surrounded by an adhesive applicator and two sets of assembly devices, and the heating and curing device is located above the rotating positioning mechanism.

2. The automatic gluing, testing, and assembly equipment for disc motor magnets according to claim 1, characterized in that, The rotation positioning mechanism includes a rotation mechanism and a rotating frame, with the rotating frame mounted on the frame and connected to the rotation mechanism.

3. The automatic gluing, testing, and assembly equipment for disc motor magnets according to claim 2, characterized in that, The rotating mechanism includes a servo motor and a reducer. The power input end of the reducer is connected to the servo motor, and the rotating frame is connected to the power output end of the reducer.

4. The automatic gluing, testing, and assembly equipment for disc motor magnets according to claim 1, characterized in that, The adhesive applicator includes an adhesive tank, a metering valve, a push-pull mechanism, and a nozzle. The adhesive tank, metering valve, and push-pull mechanism are all mounted on the frame. The adhesive tank, metering valve, and nozzle are connected in sequence through pipelines, and the nozzle is connected to the push-pull mechanism.

5. The automatic gluing, testing, and assembly equipment for disc motor magnets according to claim 1, characterized in that, The assembly device includes a hopper and a pushing mechanism, both of which are mounted on a frame. The bottom of the hopper has a discharge port, and the pushing mechanism is located outside the discharge port.

6. The automatic gluing, testing, and assembly equipment for disc motor magnets according to claim 5, characterized in that, The silo is equipped with a conformal magnet rack for storing magnets.

7. The automatic gluing, testing, and assembly equipment for disc motor magnets according to claim 5, characterized in that, The assembly device also includes two sets of guide mechanisms arranged opposite to each other. Each set of guide mechanisms includes a guide block and a guide rod. The guide rod is mounted on the frame, the guide block is fitted on the guide rod, and a guide spring is provided between the guide block and the frame.

8. The automatic gluing, testing, and assembly equipment for disc motor magnets according to claim 5, characterized in that, The assembly device also includes a magnetic pole detection mechanism, which uses a magnetic pole detection sensor and is mounted on the frame and located below the discharge port at the bottom of the hopper.

9. The automatic gluing, testing, and assembly equipment for disc motor magnets according to claim 1, characterized in that, The heating and shaping device includes a lifting mechanism, a heating element, and a pressure plate. The lifting mechanism is mounted on the frame, the heating element is connected to the lifting mechanism, and the pressure plate is connected to the moving end of the lifting mechanism and connected to the heating element.

10. The automatic gluing, testing, and assembly equipment for disc motor magnets according to claim 9, characterized in that, The lifting mechanism includes a lifting frame, a lifting unit, and a guide sleeve. The lifting frame is installed on the machine frame, and a guide sleeve is provided on the lifting frame. A guide rod is installed in the guide sleeve. The lifting unit is installed on the lifting frame, and the pressure plate is connected to the lifting unit.

Images