Commutator bottom plug-in device and method for motor production

Abstract

A commutator bottom-mounted plug-in device and method for motor production includes a work platform, a turntable is arranged on the work platform, a motor rotor mounting groove is provided circumferentially on the turntable, and a plug-in mechanism and a discharge mechanism are sequentially provided circumferentially on the outer side of the turntable; the plug-in mechanism includes a sliding plate, which is arranged in the slot of the mounting seat and driven by a first cylinder; a commutator positioning hole is provided at the front end of the sliding plate, and the commutator positioning hole is respectively aligned with the discharge port of the vibration disk guide rail and the motor rotor mounting groove on the turntable when the first cylinder is extended and retracted; a stamping cylinder is provided above and below the commutator positioning hole, and the stamping cylinder is connected to a punch rod, and the punch rod is aligned with the commutator positioning hole; the discharge mechanism includes a second cylinder, the lower end of the second cylinder is connected to a push rod, and the push rod is aligned with the motor rotor mounting groove at the discharge station. The present invention provides a commutator bottom-mounted plug-in device and method for motor production, which can simplify the mechanism and improve the efficiency of plug-in.

Description

Technical Field

[0001] The invention relates to micro-motor production equipment, in particular to a commutator bottom-placed plug-in device and method for motor production. Background Art

[0002] During the motor (micromotor) assembly process, a commutator is inserted into the connecting shaft of the motor rotor and then welded to the copper wire of the motor rotor. After welding, the commutator surface is finish-turned, and the copper chips on the commutator surface are cleaned after finish-turning.

[0003] Patent application number "202022946541.7" is titled "A Device for Automatically Pressing Commutators into Motor Rotors." The device features a positioning ridge 211 on the mounting block 21. After the motor rotor is placed in the mounting block 21, a stop plate 41 is placed at the bottom. Because the stop plate 41 is required to support and position the connecting shaft at the lower end of the motor rotor, the motor rotor cannot be plugged in from the bottom due to the block. As can be seen in the aforementioned patent, the plug-in equipment is all completed from the top. This approach is not conducive to simplifying the process.

[0004] The patented "Motor Rotor Assembly Device," with application number "202120190448.X," features magnets positioned within the turntable's fastening slots 21 to secure the rotor. During subsequent assembly, the motor rotor is pressed downward. As the rotor moves downward along the magnets, friction between the rotor and magnets, both made of metal, can cause wear or scratches on the rotor's surface. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a bottom-mounted commutator plug-in device and method for motor production. By improving the turntable, the motor rotor can be directly pre-tightened without setting a bottom limit plate, etc., which facilitates direct bottom plug-in to complete the commutator assembly operation, and the structure is simpler and more efficient.

[0006] In order to solve the above technical problems, the technical solution adopted by the present invention is:

[0007] A commutator bottom-mounted plug-in device for motor production comprises a working platform, a turntable is arranged on the working platform, a plurality of motor rotor mounting slots are circumferentially provided on the turntable, and a plug-in mechanism and a discharge mechanism are sequentially provided circumferentially on the outer side of the turntable;

[0008] The plug-in mechanism includes a sliding plate, which is arranged in a slot of the mounting seat and is driven to move forward and backward by a first cylinder; a commutator positioning hole is provided at the front end of the sliding plate, and the commutator positioning hole is respectively aligned with the discharge port of the vibration plate guide rail and the motor rotor mounting slot on the turntable when the first cylinder is extended and retracted; punching cylinders are respectively provided above and below the commutator positioning hole, and the punching cylinder is connected to a punch rod, and the punch rod is aligned with the commutator positioning hole;

[0009] The unloading mechanism includes a second cylinder, the lower end of the second cylinder is connected to the push rod, the push rod is opposite to the motor rotor installation groove at the unloading station, a through hole is opened on the working platform at the lower end of the push rod, and a discharge pipe is connected to the through hole.

[0010] The working platform is provided with a positioning mechanism, which includes a third cylinder connected to a positioning plate. A groove wheel is fixed to the bottom end of the corresponding turntable, and the positioning plate is directly opposite to the groove opening on the groove wheel.

[0011] A positioning block and a limiting block are embedded on the inner wall of the motor rotor installation groove.

[0012] The positioning block is made of polytetrafluoroethylene, and the limiting block is made of elastic rubber.

[0013] The front end of the portion of the positioning block extending out of the side wall of the motor rotor installation slot is a clamping head, and the rear end is a neck portion with the left and right side walls recessed inwards.

[0014] The commutator positioning hole is a plum blossom-shaped hole that matches the commutator.

[0015] A method for inserting a commutator in a bottom-mounted manner for motor production comprises the following steps:

[0016] Step 1) Start the turntable's motor, which rotates intermittently. Every time the turntable rotates a certain angle, the controller stops the motor. Simultaneously, the third cylinder extends, and the positioning plate moves forward and presses against the groove of the sheave, ensuring the turntable stops immediately. After a period of inactivity, the controller restarts the turntable. Repeat this process to achieve intermittent rotation of the turntable.

[0017] Step 2) When the turntable stops for a short period of time, manually insert the motor rotor into the motor rotor installation slot from top to bottom, and use the positioning block to prevent the motor rotor from falling out of the motor rotor installation slot; the side wall of the motor rotor is clamped by the limit block, and the two limit blocks are clamped to prevent the motor rotor from freely falling out of the motor rotor installation slot;

[0018] Step 3) After manual loading, when the motor rotor mounting slot on the turntable rotates to the positioning mechanism at the lower end of the motor rotor, the push rod is used to push it up to a certain height to ensure that the height of the motor rotor passing by is consistent;

[0019] Step 4) When arriving at the plug-in station, when the first cylinder drives the sliding plate to extend, the commutator positioning hole is aligned with the motor rotor in the motor rotor mounting slot at the plug-in station on the turntable, and the upper and lower stamping cylinders extend a distance. At this time, the motor rotor moves down a distance in the motor rotor mounting slot and is still in the motor rotor mounting slot; the stamping cylinder at the lower end pushes the commutator out of the sliding plate and completes the plug-in with the motor rotor; after the plug-in is completed, the stamping cylinder retracts and returns to its original position, the first cylinder retracts and returns to its original position, the commutator positioning hole is aligned with the discharge port of the vibration disk guide rail, and the commutator positioning hole receives the commutator again.

[0020] Step 5) When the plugged motor rotor rotates to the unloading position, the push rod extends to push the motor rotor into the discharge pipe and finally into the receiving box.

[0021] The present invention provides a commutator bottom-mounted plug-in device and method for motor production, which has the following technical effects:

[0022] 1) The motor rotor is limited and positioned using positioning blocks and limit blocks, making it easier to pre-tighten the motor during initial insertion and later push and unload. The simple structure eliminates the need for a limit plate or other mechanical structure at the bottom. Compared to the groove structure in the patent application number "202022946541.7," "Equipment for Automatic Press-Fitting of Commutators for Motor Rotors," this is more stable and reliable, preventing loosening. Furthermore, because the positioning and limit blocks are made of non-metallic materials, they will not rub or wear against the inner wall of the motor rotor mounting slot during later insertion or unloading.

[0023] 2) The commutator is positioned by using the commutator positioning hole, and the upper and lower stamping cylinders work together to complete the assembly of the commutator and the motor rotor, which is simple and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and examples:

[0025] Figure 1 It is a structural schematic diagram of the present invention (left side).

[0026] Figure 2 It is a structural schematic diagram of the present invention (right side).

[0027] Figure 3 It is a structural schematic diagram of the plug-in mechanism in the present invention.

[0028] Figure 4 Schematic diagram of the connection between the first cylinder and the sliding plate in the present invention.

[0029] Figure 5 This is a schematic diagram of the working state of the punching cylinder in the present invention.

[0030] Figure 6 It is a structural schematic diagram of the punch rod in the present invention.

[0031] Figure 7 It is a structural schematic diagram of the turntable in the present invention.

[0032] Figure 8 It is a structural schematic diagram of the motor rotor mounting slot in the present invention.

[0033] Figure 9 It is a schematic diagram of the assembly of the motor rotor mounting slot and the motor rotor in the present invention.

[0034] Figure 10 This is a structural diagram of the motor rotor and commutator after assembly.

[0035] Figure 11 It is a structural schematic diagram of the commutator positioning hole in the present invention.

[0036] In the figure: working platform 1, turntable 2, motor rotor mounting groove 3, plug-in mechanism 4, unloading mechanism 5, motor rotor 6, commutator 7, discharge pipe 8, positioning mechanism 9, sliding plate 4.1, mounting seat 4.2, first cylinder 4.3, commutator positioning hole 4.4, vibration plate guide rail 4.5, stamping cylinder 4.6, punch rod 4.7, third cylinder 9.1, positioning plate 9.2, grooved wheel 9.3, positioning block 3.1, limit block 3.2, third cylinder 9.1, positioning plate 9.2. DETAILED DESCRIPTION

[0037] like Figure 1-2 As shown, a commutator-under-mounted insertion device for motor production comprises a work platform 1, on which is mounted a turntable 2, which is driven intermittently by a motor. Multiple motor rotor mounting slots 3 are circumferentially disposed on the turntable 2. These slots are used to receive and preload the motor rotor 6 to prevent it from falling out. An insertion mechanism 4 and a discharge mechanism 5 are sequentially disposed circumferentially on the outer side of the turntable 2. The insertion mechanism 4 is used to insert the commutator 7 onto the connecting shaft of the motor rotor 6, while the discharge mechanism 5 is used to remove the assembled motor rotor 6 from the turntable 2.

[0038] like Figure 3-6As shown, the plug-in mechanism 4 includes a sliding plate 4.1. Mounting blocks 4.2 are fixed to the work platform 1 to the left and right of the sliding plate 4.1. The rear end of the sliding plate 4.1 is connected to a first cylinder 4.3. When the first cylinder 4.3 is extended or retracted, the sliding plate 4.1 moves back and forth along the gap between the mounting blocks 4.2. A commutator positioning hole 4.4 is provided at the front end of the sliding plate 4.1. A vibration plate guide 4.5 is fixed to the upper end of the mounting block 4.2. The vibration plate guide 4.5 is connected to the vibration plate. The vibration plate is used to vibrate and transport the commutator 7 into the vibration plate guide 4.5. The discharge port of the vibration plate guide 4.5 is vertically downward, leaving a small gap (2mm) with the end face of the sliding plate 4.1. When the first cylinder 4.3 is extended, the commutator positioning hole 4.4 is aligned with the motor rotor mounting groove 3 at the plug-in station on the turntable 2, making plug-in convenient; and when the first cylinder 4.3 is retracted, the commutator positioning hole 4.4 is aligned with the discharge port of the vibration disk guide rail 4.5, making it convenient for the commutator 7 to enter the commutator positioning hole 4.4.

[0039] In addition, a stamping cylinder 4.6 is installed above and below the motor rotor mounting slot 3 at the plug-in station on the work platform 1. The stamping cylinder 4.6 is connected to the punch rod 4.7, and the punch rod 4.7 is opposite to the motor rotor 6 at the motor rotor mounting slot 3 at the plug-in station.

[0040] like Figure 5-6 As shown, when the first cylinder 4.3 drives the sliding plate 4.1 to extend, the commutator positioning hole 4.4 is aligned with the motor rotor 6 in the motor rotor mounting slot 3 at the insertion station on the turntable 2. The upper and lower punching cylinders 4.6 extend a certain distance. At this time, the motor rotor 6 moves downward a certain distance in the motor rotor mounting slot 3 and remains in the motor rotor mounting slot 3. The lower punching cylinder 4.6 pushes the commutator 7 out of the sliding plate 4.1 and completes the insertion with the motor rotor 6. After the insertion is completed, the punching cylinder 4.6 retracts and returns to its original position, and the first cylinder 4.3 retracts and returns to its original position. The commutator positioning hole 4.4 is aligned with the discharge port of the vibration disk guide rail 4.5, and the commutator positioning hole 4.4 receives the commutator 7 again.

[0041] like Figure 2 As shown, the unloading mechanism 5 comprises a second cylinder 5.1, the lower end of which is connected to a push rod 5.2. Push rod 5.2 is aligned with the motor rotor mounting slot 3 at the unloading station. A through hole 5.3 is formed in the working platform 1 at the lower end of push rod 5.2. A discharge pipe 8 is connected to through hole 5.3, and the other end of discharge pipe 8 extends into the material receiving box. Discharge pipe 8 is a PU transparent steel wire telescopic spring tube that provides a buffer during discharge. Once assembled, the second cylinder 5.1 extends, and the push rod 5.2 moves downward, pushing the motor rotor 6 into the discharge pipe 8 and ultimately into the material receiving box.

[0042] like Figure 7As shown, a positioning mechanism 9 is installed on the working platform 1. The positioning mechanism 9 includes a third cylinder 9.1. The third cylinder 9.1 is connected to a positioning plate 9.2. The lower end of the positioning plate 9.2 is guided by a mounting plate with a notch. A sheave 9.3 is fixed to the bottom end of the corresponding turntable 2. The positioning plate 9.2 is directly opposite to the notch on the sheave 9.3. The number of notches on the sheave 9.3 is consistent with the number of the motor rotor mounting slots 3 on the turntable 2 and they correspond one to one. Since the diameters of the connecting shaft and the commutator 7 of the motor rotor 6 are very small, only a few millimeters, in order to avoid deviation when the turntable 2 stops intermittently, each time the turntable 2 stops, the positioning plate 9.2 extends out and gets stuck in the notch on the sheave 9.3 to ensure that the turntable 2 stops instantly and avoids any deviation that may cause plug-in failure.

[0043] like Figure 8-9 As shown, a positioning block 3.1 and a limit block 3.2 are embedded on the inner wall of the motor rotor mounting groove 3. The positioning block 3.1 can be made of high molecular weight polytetrafluoroethylene. The portion of the positioning block 3.1 that extends out of the inner wall of the motor rotor mounting groove 3 is a clamping head. The front end of the clamping head is a pointed tip, and the rear end of the clamping head forms a neck. When the motor rotor 6 passes through the positioning block 3.1 from top to bottom, the motor rotor 6 can move up and down along the positioning block 3.1 and cannot be pulled out. The limit blocks 3.2 are two groups on the left and right, and are made of rubber. Since rubber has a certain elasticity and partially extends out of the inner wall of the motor rotor mounting groove 3, the motor rotor can be pre-clamped after the motor rotor 6 is inserted to prevent the motor rotor from sliding down.

[0044] In addition, a motor rotor lower end positioning mechanism is provided on the work platform 1, located before the workstation of the plug-in mechanism 4. This mechanism comprises a set of pneumatic cylinders, one set of which is vertically mounted on the back of the work platform 1. The piston rods of the cylinders are connected to a push rod, which passes through the work platform 1 and is aligned with or away from the motor rotor mounting slot 3 on the turntable 2. When the motor rotor mounting slot 3 on the turntable 2 is aligned with the push rod, the cylinders extend, and the push rod lifts the motor rotor 6 upward to a certain height. This ensures that all motor rotors 6 to be plugged in after passing through the motor rotor lower end positioning mechanism are at the same height. During later plug-in, the punching cylinders 4 and 6 can ensure that the plug-in is in place even if the punching stroke is constant.

[0045] Working Principle and Process: The motor rotor 6 is manually inserted into the motor rotor mounting slot 3. Positioned and limited by the positioning block 3.1 and the limit block 3.2, the rotor is lifted upwards to a certain height as it passes through the positioning mechanism at the lower end of the motor rotor (not shown). This ensures that all motor rotors 6 passing through it are at the same vertical height. The rotor then reaches the insertion mechanism 4, where it is connected. As it continues to rotate, it reaches the unloading mechanism 5, which removes the assembled motor rotor 6.

Claims

1. A commutator bottom-mounted plug-in device for motor production, characterized by: The invention comprises a working platform (1), a turntable (2) is arranged on the working platform (1), a plurality of motor rotor mounting grooves (3) are circumferentially provided on the turntable (2), and a plug-in mechanism (4) and a discharge mechanism (5) are sequentially provided on the outer circumference of the turntable (2); The plug-in mechanism (4) includes a sliding plate (4.1), which is arranged in a slot of a mounting seat (4.2) and is driven to move forward and backward by a first cylinder (4.3); a commutator positioning hole (4.4) is provided at the front end of the sliding plate (4.1), and the commutator positioning hole (4.4) is respectively opposite to the discharge port of the vibration plate guide rail (4.5) and the motor rotor mounting slot (3) on the turntable (2) when the first cylinder (4.3) is extended or retracted; a punching cylinder (4.6) is respectively provided above and below the commutator positioning hole (4.4), and the punching cylinder (4.6) is connected to a punching rod (4.7), and the punching rod (4.7) is opposite to the commutator positioning hole (4.4); The unloading mechanism (5) includes a second cylinder (5.1), the lower end of the second cylinder (5.1) is connected to a push rod (5.2), the push rod (5.2) is directly opposite to the motor rotor installation groove (3) at the unloading station, and a through hole (5.3) is formed on the working platform (1) at the lower end of the push rod (5.2), and a discharge pipe (8) is connected to the through hole (5.3).

2. The commutator bottom-mounted plug-in device for motor production according to claim 1, characterized in that: A positioning mechanism (9) is installed on the work platform (1), and the positioning mechanism (9) includes a third cylinder (9.1). The third cylinder (9.1) is connected to a positioning plate (9.2). A groove wheel (9.3) is fixed to the bottom end of the corresponding turntable (2), and the notches on the positioning plate (9.2) and the groove wheel (9.3) are directly opposite.

3. The commutator bottom-mounted plug-in device for motor production according to claim 1, characterized in that: A positioning block (3.1) and a limiting block (3.2) are embedded on the inner wall of the motor rotor mounting groove (3).

4. The commutator bottom-mounted plug-in device for motor production according to claim 3, characterized in that: The positioning block (3.1) is made of polytetrafluoroethylene, and the limiting block (3.2) is made of elastic rubber.

5. The commutator bottom-mounted plug-in device for motor production according to claim 3, characterized in that: The front end of the portion of the positioning block (3.1) extending out of the side wall of the motor rotor mounting slot (3) is a clamping head, and the rear end is a neck portion with the left and right side walls recessed inwards.

6. The commutator bottom-mounted plug-in device for motor production according to claim 1, characterized in that: The commutator positioning hole (4.4) is a plum blossom-shaped hole that matches the commutator (7).

7. A method for inserting a commutator-down plug-in device for motor production according to any one of claims 1 to 6, comprising the following steps: Step 1), start the motor of the turntable (2), and the turntable rotates intermittently; every time the turntable (2) rotates a certain angle, the controller controls the motor of the turntable (2) to stop; at the same time, the third cylinder ( 9.1) extends out, the positioning plate (9.2) moves forward and presses against the slot of the groove wheel (9.3), ensuring that the turntable (2) stops immediately; after stopping for a period of time, the controller controls the turntable (2) to start again; repeat the above process to achieve intermittent rotation of the turntable (2); Step 2), during a short period of time when the turntable (2) stops, the motor rotor (6) is manually inserted from top to bottom into the motor rotor mounting groove (3), and the motor rotor (6) is positioned by the positioning block (3.1) to prevent the motor rotor (6) from being outwardly separated from the motor rotor mounting groove (3); the side wall of the motor rotor (6) is clamped by the limit block (3.2), and the two limit blocks (3.2) are clamped to prevent the motor rotor (6) from freely falling out of the motor rotor mounting groove (3); Step 3), after manual loading, when the motor rotor mounting groove (3) on the turntable (2) rotates to the positioning mechanism at the lower end of the motor rotor, the push rod is used to push it up to a certain height to ensure that the height of the motor rotor (6) passing through is consistent; Step 4), when arriving at the plug-in station, the first cylinder (4.3) drives the sliding plate (4.1) to extend, and the commutator positioning hole (4.4) is aligned with the motor rotor (6) in the motor rotor mounting groove (3) at the plug-in station on the turntable (2), and the upper and lower punching cylinders (4.6) extend a distance. At this time, the motor rotor (6) moves down a distance in the motor rotor mounting groove (3) and is still in the motor rotor mounting groove (3); and the punching cylinder (4.6) at the lower end pushes the commutator (7) out of the sliding plate (4.1) and completes the plug-in with the motor rotor (6); after the plug-in is completed, the punching cylinder (4.6) retracts and returns to its original position, and the first cylinder (4.3) retracts and returns to its original position, and the commutator positioning hole (4.4) is aligned with the discharge port of the vibration disk guide rail (4.5), and the commutator positioning hole (4.4) receives the commutator (7) again; Step 5) When the plugged motor rotor (6) rotates to the unloading position, the push rod (5.2) extends to push the motor rotor (6) into the discharge pipe (8) and finally into the receiving box.

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