CN116436226A - Stepping motor and automatic assembly equipment thereof - Google Patents

Abstract

The utility model relates to the technical field of motors, in particular to a stepping motor and automatic assembly equipment thereof, which comprises a shell, cleaning elements, a self-locking device, a rotating mechanism, detachable elements and the assembly equipment.

Description

Stepping motor and automatic assembly equipment thereof

Technical Field

The utility model relates to the technical field of motors, in particular to a stepping motor and automatic assembly equipment thereof.

Background

The stepping motor utilizes electric pulse signals to enable coils on the stator to be electrified to generate a magnetic field so as to drive permanent magnets on the rotor to rotate, and the number and frequency of the input pulse signals are controlled to change the angular displacement or linear displacement output by the rotor and the rotating speed of the rotor.

In an automatic assembly production line, because the stepping motor can achieve more accurate position control, the stepping motor is frequently used for controlling the position and the direction of a workpiece to be driven by a mechanical arm joint, however, when the stepping motor works, the coil in the stepping motor is overheated and burnt out due to the reasons of overhigh power supply voltage, overlong working time, overlarge load, aging of the coil and the like, the production progress of the whole production line is affected, the production cost is improved when the stepping motor is replaced, the damaged coil in the stepping motor is replaced, and the stepping motor is required to be completely disassembled and then assembled, so that the maintenance efficiency is low.

For this reason, the prior art provides some solutions, for example, a stepper motor (application number: CN202022469302.7 bulletin day: 2021-05-11) convenient to maintain invented by Shenzhen Keli motion control technology limited company, the utility model discloses a stepper motor convenient to maintain, including a rectangular mounting cover, a maintenance disassembly component is arranged on one side of the rectangular mounting cover, the maintenance disassembly component includes a mounting shell, the mounting shell is fixedly connected with the rectangular mounting cover through four bolts, a stator is fixedly arranged on one side of the mounting shell, a plurality of coil windings are fixedly embedded in the stator, an external thread shell is fixedly arranged on one side of the stator, and an internal thread rectangular cover is sleeved on one side of the external thread shell, the beneficial effects of the utility model are that: the four bolts are respectively detached through the external tool, so that the rectangular installation cover and the installation shell are conveniently separated, the four screws are respectively detached through the external tool, the rectangular internal thread cover is rotationally detached, the rectangular internal thread cover and the installation shell are conveniently separated, the requirement of convenient maintenance is better met, and the convenience of the stepping motor is improved; however, the above-mentioned utility model only facilitates the disassembly and separation between the mounting cover and the housing, and does not propose a solution for replacing the internal coil well, and under the condition of ensuring the stable movement of the stepper motor, the quick replacement of the coil cannot be realized, which has a certain negative effect on the production efficiency.

In view of the above, in order to overcome the above technical problems, the present utility model provides a stepper motor and an automatic assembly device thereof, which solve the above technical problems.

Disclosure of Invention

The technical problems to be solved by the utility model are as follows: the existing stepping motor cannot realize the quick replacement of the coil inside the motor, so that the working efficiency of an automatic assembly production line is negatively affected.

In order to achieve the above object, the present utility model provides the following technical solutions:

the utility model provides a stepping motor and automatic assembly equipment thereof, which comprises a shell, cleaning elements, a self-locking device, a rotating mechanism, detachable elements and assembly equipment, wherein the cleaning elements are fixedly arranged on the shell through welding, and the cleaning elements are used for cleaning the surface of the rotating mechanism when the rotating mechanism passes through the cleaning elements in the maintenance or assembly process; the self-locking device is movably arranged on the cleaning element, the self-locking device is used for unlocking through magnetic force, the self-locking device is used for clamping and carrying out the rotating mechanism when the self-locking device is unlocked, and the self-locking device is automatically matched with the cleaning element when the rotating mechanism is arranged in the stepping motor, so that the integral structure of the stepping motor is locked; the self-locking device is rotatably provided with the rotating mechanism, and the rotating mechanism is driven by magnetic field force generated by the coil in the detachable element to rotate in the shell, so that power is provided while the detachable element is fixed, and electric energy is converted into mechanical energy; the detachable element is slidably arranged in the shell, the detachable element is convenient to replace and provides a rotating magnetic field force for the rotating mechanism when in modular design, and meanwhile, the detachable element and the shell form a closed rectangular body; the assembly device is used for specially assembling or maintaining the stepping motor, and when the coil on the detachable element is damaged, the assembly device can realize quick replacement and can be put into use again.

Preferably, the self-locking device comprises a sealing element, an elastic element, a magnetic element and a self-locking assembly, wherein the sealing element is movably arranged on the cleaning element, the sealing element is used for being matched with the cleaning element to ensure the tightness of the stepping motor, the elastic element is fixedly arranged in the sealing element, the elastic element can be a compression spring, enough downward pressure is provided for the magnetic element, the magnetic element is fixedly arranged on the elastic element, the magnetic element is arranged in the sealing element, the magnetic element is used for controlling the self-locking assembly to realize unlocking and self locking of the self-locking device, and the four self-locking assemblies are respectively and slidably arranged in a rectangular channel in the sealing element.

Preferably, the sealing element can be an aluminum alloy disc, the aluminum alloy has very low magnetic conductivity, so that the normal operation of the magnetic element in the sealing element is not influenced, a boss is arranged at the center of the upper end surface of the sealing element, the elastic element is fixedly arranged in the boss, a through hole for accommodating the locking element to rotate is arranged at the lower end surface of the sealing component, a circular cavity is formed in the sealing element, four rectangular channels are distributed in a circumferential array with respect to the center of the cavity, and sliding grooves are formed in two sides of each of the four channels.

Preferably, the bottom of the magnetic element is fixedly connected with the elastic element, the magnetic element is made of permanent magnet materials, the magnetic element is of an umbrella-shaped structure, the lower end of the magnetic element is of a cylindrical structure, the upper end of the magnetic element is slightly raised, a limiting platform is arranged at the connection position of the upper end and the lower end of the magnetic element, and a through hole for accommodating the locking element to rotate is formed in the center of the magnetic element.

Preferably, the self-locking assembly comprises a fixing element, a clamping element and a guiding element, wherein the fixing element can be a rectangular aluminum alloy block, the fixing element is slidably installed in a rectangular channel in the sealing element, the clamping element is fixedly installed on the fixing element through welding, the clamping element can be an aluminum alloy rod, a hemispherical front end is arranged on the clamping element, the guiding element is fixedly installed on two sides of the fixing element, the guiding element is made of two convex aluminum alloy sheets, and springs are arranged on the sheets.

Preferably, the rotating mechanism comprises a rotating element, an output element, an insulating element, a supporting element and a locking element, wherein the rotating element can adopt a permanent magnet and can rotate under the drive of magnetic force provided by coils to provide power for the output element, the output element is fixedly installed at one end of the rotating element through welding, the output element adopts a stainless steel rod, so that a stepping motor can provide stable output for a long time, the insulating element is slidably installed on the output element, the insulating element can adopt an insulating pad, two supporting elements are symmetrically installed at two ends of the rotating element in a rotating mode, the supporting element can adopt a steel bearing, the locking element is fixedly installed on the rotating element, the locking element is used for unlocking the self-locking device and simultaneously taking out the rotating mechanism under the cooperation of the self-locking assembly, the locking element can adopt an aluminum alloy rod, the upper end of the locking element is provided with an annular groove, the annular groove is matched with the front end of the clamping element, when the front end of the clamping element is matched with the annular groove, the two ends of the clamping element are longitudinally limited by the longitudinal movement of the clamping element.

Preferably, the detachable element comprises a positioning frame and a stator core, the positioning frame is of an I-shaped structure, the positioning frame can be made of silicon steel sheets, lower magnetic resistance, higher magnetic permeability and lower eddy current loss are shown under the action of an alternating magnetic field, the positioning frame can form a closed rectangular body with the shell and the cleaning element, the stator core is fixedly arranged at the center of the positioning frame, the stator core is a hollow cylinder made of the silicon steel sheets, and tooth grooves for installing coils are formed in the stator core.

Preferably, the casing adopts above-mentioned aluminum alloy material, the casing adopts open structure, the casing is three face only, is preceding terminal surface and upper and lower both ends face respectively, set up the boss on the preceding terminal surface of casing, boss centre of a circle position has been seted up and has been held the through-hole of slewing mechanism motion, the through-hole internal diameter with output element external diameter equals, thereby guarantees output element normal rotation is simultaneously restriction other ascending removal, the upper and lower both ends face distance of casing with detachable element's height equals.

Preferably, the cleaning element is fixedly mounted on the housing through welding, the cleaning element can be an aluminum alloy plate, a circular through hole is formed in the center of the cleaning element, a circle of bristles is mounted on the circumferential array at the bottom of the cleaning element, four rectangular grooves matched with the fixing element are formed in the circular through hole on the cleaning element relative to the circumferential array at the axis, and the inner diameter of the through hole on the cleaning element is equal to the outer diameter of the self-locking device.

Preferably, the assembly device comprises a workbench, a positioning element, a dismounting element, a replacement element and a power supply element, wherein the workbench is fixedly arranged on any plane, the positioning element is fixedly arranged on the workbench, the positioning element can adopt a strong magnet, the dismounting element is fixedly arranged on the right side of the workbench, the dismounting element can adopt an electromagnet, the replacement element is fixedly arranged at the rear of the workbench, the replacement element can adopt an aluminum alloy push plate, and the two power supply elements are respectively and fixedly arranged on the dismounting element and the replacement element.

The beneficial effects of the utility model are as follows:

1. according to the stepping motor and the automatic assembly equipment thereof, the self-locking device is designed, so that the internal structure of the stepping motor is assembled and disassembled by adopting magnetic force under the condition that parts are not removed, and the detachable element is designed to realize the rapid replacement of the internal coil of the stepping motor, therefore, when the stepping motor is damaged due to improper operation in the working process, the rapid maintenance and the internal coil replacement of the stepping motor can be realized, the stepping motor can be rapidly put into use again, the production efficiency is improved, and the loss cost is reduced.

2. According to the stepping motor and the automatic assembly equipment thereof, through designing the magnetic element and the fixing component, under the cooperation of the locking element, the rotating mechanism arranged in the stepping motor can be clamped and taken out while the self-locking device is disassembled, and the shell can be closed and locked while the rotating mechanism is inserted after the detachable element is replaced or assembled.

3. According to the stepping motor and the automatic assembly equipment thereof, through designing the assembly equipment, the stepping motor can be rapidly disassembled and assembled through the disassembly and assembly element, the damaged coil can be rapidly replaced through designing the replacement element, the assembly process of the assembly equipment is completely completed by machinery, no operation is needed by staff, the strength of the staff is reduced, and meanwhile the risk of error in assembly operation is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following description will briefly explain the drawings needed in the embodiments of the present application, and it is obvious that the drawings described below are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is an overall block diagram of the present utility model;

FIG. 2 is a cross-sectional view of a stepper motor of the present utility model;

FIG. 3 is a schematic view of a self-locking device of the present utility model;

FIG. 4 is a cross-sectional view of the self-locking device of the present utility model;

FIG. 5 is a cross-sectional view of a closure element of the present utility model;

FIG. 6 is a schematic illustration of a magnetic element of the present utility model;

FIG. 7 is a schematic view of a self-locking assembly of the present utility model;

FIG. 8 is a schematic view of a rotating mechanism of the present utility model;

FIG. 9 is an enlarged view of point A of the present utility model;

FIG. 10 is a schematic view of a removable element of the present utility model;

FIG. 11 is a schematic illustration of a housing of the present utility model;

FIG. 12 is a schematic view of a cleaning element of the present utility model;

fig. 13 is a schematic view of an assembly apparatus of the present utility model.

In the figure: 1. a housing; 2. a cleaning member; 3. a self-locking device; 31. a closure element; 32. an elastic element; 33. a magnetic element; 34. a self-locking assembly; 341. a fixing element; 342. a clamping element; 343. a guide member; 4. a rotating mechanism; 41. a rotating element; 42. an output element; 43. an insulating member; 44. a support element; 45. a locking element; 5. a detachable element; 51. a positioning frame; 52. a stator core; 6. assembling equipment; 61. a work table; 62. a positioning element; 63. disassembling and assembling the element; 64. replacing the component; 65. and a power supply element.

Detailed Description

In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.

Example 1: as shown in fig. 1 and 2, a stepping motor and automatic assembly equipment thereof comprise a shell 1, a cleaning element 2, a self-locking device 3, a rotating mechanism 4, a detachable element 5 and assembly equipment 6, wherein the cleaning element 2 is fixedly installed on the shell 1, the self-locking device 3 is movably installed on the cleaning element 2, the rotating mechanism 4 is rotatably installed on the self-locking device 3, the detachable element 5 is slidably installed in the shell 1, and the assembly equipment 6 is fixedly installed on any plane;

the housing 1 is used for protecting the internal structure of a stepping motor, the cleaning element 2 is used for cleaning the surface of the rotating mechanism 4 when the stepping motor is maintained or assembled, the self-locking device 3 is used for taking out the rotating mechanism 4 when the rotating mechanism 4 is unlocked and automatically locking the rotating mechanism 4 when the rotating mechanism 4 is installed, the rotating mechanism 4 is used for fixing the detachable element 5 and providing power, the detachable element 5 can be replaced and provides magnetic field force for rotating the rotating mechanism 4, and the assembling equipment 6 is used for specially assembling or maintaining the stepping motor in the utility model;

the whole existing stepping motor is generally fixed by adopting a locating pin, if the existing stepping motor is manually dismounted, the dismounting time of one locating pin is about 1-2 minutes, the replacement and maintenance of an internal coil are often required to be disassembled and then assembled, the whole dismounting, replacement and assembly processes are about 15-20 minutes, the maintenance efficiency is low, meanwhile, the loss of internal parts is possibly caused, and the stepping motor and the automatic assembly equipment thereof designed by the utility model can realize the detachment between the rotating mechanism 4 and the shell 1 in 5 seconds by magnetically attracting and unlocking while ensuring the tightness and stability of the stepping motor, and the whole replacement process is completed in 10 seconds by designing the detachable element 5, so that the working capacity of the stepping motor is restored and the stepping motor is put into use again in half a minute.

As shown in fig. 3 and 4, the self-locking device 3 includes a closing element 31, an elastic element 32, a magnetic element 33 and a self-locking assembly 34, the closing element 31 is movably mounted on the cleaning element 2, the elastic element 32 is fixedly mounted in the closing element 31, the elastic element 32 can use a compression spring with a diameter of 5 mm and a wire diameter of 0.5 mm to provide a downward pressure of about 3 newtons for the magnetic element 33, so that the magnetic element 33 can smoothly push out the self-locking assembly 34, the magnetic element 33 is fixedly mounted on the elastic element 32, the magnetic element 33 is placed in a circular cavity inside the closing element 31, and four self-locking assemblies 34 are respectively slidably mounted in four rectangular channels inside the closing element 31;

when the detachable element 5 needs to be replaced, the detachable element 63 adsorbs the magnetic element 33, the magnetic element 33 is lifted by the adsorption force, the self-locking assembly 34 is retracted and simultaneously clamps the locking element 45, when the detachable element 5 is replaced, the detachable element 63 is used for mounting the self-locking device 3 back to the cleaning element 2, the magnetic element 33 is not adsorbed by the detachable element 63, and the magnetic element 33 is driven to be pressed downwards by the cooperation of the elastic element 32 to push out the self-locking assembly 34, so that the cleaning element 2 is locked;

the existing stepping motor needs to use a tool to open the shell 1 when the internal coil is dismounted, the risk of losing parts is also caused in the dismounting process, the shell 1 can be opened without dismounting the sealing element 31, the maintenance efficiency is improved, the internal parts are not required to be taken out in the dismounting and mounting process of the self-locking device 3 on the cleaning element 2, and the risk of losing the parts is reduced.

As shown in fig. 5, the sealing element 31 may be an aluminum alloy disc, and the aluminum alloy generally has very low magnetic permeability, so that the normal operation of the magnetic element in the sealing element 31 is not affected, a boss is provided at the center of the upper end surface of the sealing element 31, so that the dismounting element 63 is convenient to adsorb the magnetic element, the elastic element 32 is fixedly mounted in the boss, a through hole for accommodating the rotation of the locking element 45 is provided at the lower end surface of the sealing element 31, a circular cavity is provided in the sealing element 31, four rectangular channels are distributed in a circumferential array about the center of the cavity, and sliding grooves for accommodating the movement of the guiding element 343 are provided at both sides of the four channels.

As shown in fig. 6, the bottom of the magnetic element 33 is fixedly connected with the elastic element 32, the magnetic element 33 is made of a permanent magnet, the magnetic element 33 is in an umbrella-shaped structure, the lower end of the magnetic element 33 is in a cylinder, the upper end of the magnetic element 33 is slightly raised, the raised radian is 120 degrees, so as to better push the clamping element 342, a limiting platform is arranged at the connection position of the upper end and the lower end of the magnetic element 33, the height of the magnetic element 33 raised when being absorbed by the dismounting element 63 is limited, the diameter of the limiting platform is 11 mm, the lifting height is 4 mm, therefore, when the magnetic element 32 is pressed down to the lowest position, the fixing element 341 can be pushed out to a position 30 mm away from the center of the self-locking device, and just fits with a rectangular groove formed on the cleaning element, a through hole for accommodating the locking element 45 is formed in the center of the magnetic element 33, the diameter of the through hole is equal to the outer diameter of the locking element 45, and the locking element 45 is ensured to freely rotate in the magnetic element 33, and the movement of the locking element 45 in the direction is limited at the same time as the other diameter of the locking element 45;

when the stepper motor needs to be unlocked, the dismounting element 63 adsorbs the magnetic element 33, the magnetic element 33 is lifted upwards by adsorption force until reaching a limiting position, the locking element 45 rotatably installed in the magnetic element 33 is exposed, the locking component 34 is retracted and clamps the locking element 45, when the dismounting element 63 does not adsorb the magnetic element 33 any more, the magnetic element 33 is subjected to the downward pressure of the elastic element 32, and after the bulge of the magnetic element 33 pushes the self-locking component 34 to pop up, the locking element 45 returns to the through hole of the magnetic element 33 to rotate freely;

when the existing stepping motor needs to be replaced or maintained, the stepping motor can be opened by means of tools with the same size as a cross screwdriver and the like, and then the next maintenance work is carried out, and the magnetic element 33 designed by the utility model can complete the disassembly and the assembly of the sealing device on the cleaning element 2 by utilizing magnetic force, so that the maintenance difficulty is reduced, and meanwhile, the assembly efficiency is provided.

As shown in fig. 7, the self-locking assembly 34 includes a fixing element 341, a clamping element 342 and a guiding element 343, wherein the fixing element 341 is a rectangular aluminum alloy block, the fixing element 341 is slidably mounted in a rectangular channel in the sealing element 31, the clamping element 342 is fixedly mounted on the fixing element 341 by welding, the clamping element 342 is an aluminum alloy rod, the clamping element 342 is provided with a hemispherical front end, which is exactly engaged with an annular groove on the locking element 45, the guiding element 343 is fixedly mounted on two sides of the fixing element 341, the guiding element 343 adopts two convex aluminum alloy sheets, the size of the sheets is engaged with the size of a chute in the sealing element 31, a spring is arranged on the sheets, and the guiding element 343 is slidably mounted in the chute in the sealing element 31;

when the magnetic element 33 is absorbed by the dismounting element 63, the guiding element 343 slides in the chute under the spring force to drive the clamping element 342 to clamp the locking element 45, and when the magnetic element 33 is pressed down, the fixing element 341 is pushed out of the closing element 31 to be matched with the rectangular slot on the cleaning element 2, so as to be mutually locked with the cleaning element 2;

the existing stepping motor also needs to manually take out the rotor in the stepping motor after the positioning pin shaft is detached, the self-locking assembly 34 designed by the utility model realizes the linkage effect of detachment and taking out, the rotating mechanism 4 is clamped and brought out while the stepping motor is opened, and the self-locking is realized after the rotating mechanism 4 is installed, so that the complexity of assembling the stepping motor is reduced.

As shown in fig. 8 and 9, the rotating mechanism 4 includes a rotating element 41, an output element 42, an insulating element 43, a supporting element 44 and a locking element 45, where the rotating element 41 adopts a permanent magnet, the surface of the rotating element 41 is provided with 50 tooth grooves about an axial circumferential array, so that a step angle of the stepper motor is 1.8 °, the rotating element 41 can rotate under the drive of a magnetic field force provided by a coil, so as to provide power for the output element 42, the output element 42 is fixedly mounted at one end of the rotating element 41 by welding, the output element 42 adopts a stainless steel rod, two semicircular grooves are symmetrically opened on the surface of the output element 42, so that the stepper motor can provide stable output for a long time, the insulating element 43 is slidably mounted on the output element 42, the insulating element 43 selects an insulating pad, and prevents short circuit and leakage phenomena generated between different potentials at the same time, two ends of the rotating element 41 are symmetrically rotatably mounted with two supporting elements 44, the supporting element 44 adopts a steel bearing, the locking element 45 is fixedly mounted on the rotating element 41, the locking element 45 is clamped with the locking element 45 at the opposite ends of the annular element 45, and the locking element 342 is clamped by the locking element 342 when the locking element 45 is clamped at the opposite ends of the annular element 45, and the locking element 342 is clamped by the locking element 45, and the locking element is clamped at the opposite ends of the locking element 45;

when the rotating mechanism 4 is rotatably installed in the detachable element 5, the output element 42 is rotatably installed in a through hole formed in the front end face of the shell 1, the locking element 45 is rotatably installed in the self-locking device 3, the rotating element 41 freely rotates in the detachable element 5, and when the self-locking device 3 is unlocked, the front end of the clamping element 342 is matched with an annular groove on the upper end of the locking element 45, so that the self-locking device 3 can clamp the rotating mechanism 4;

compared with the rotor in the existing stepping motor, the rotating mechanism 4 designed by the utility model realizes the integration of disassembly by designing the locking element 45 while performing energy conversion, and the independent disassembly is not needed on the premise of not influencing the normal operation, so that the disassembly and assembly efficiency of the stepping motor are improved, and meanwhile, the abrasion of the rotating mechanism 4 in the disassembly process is reduced.

As shown in fig. 10, the detachable element 5 includes a positioning frame 51 and a stator core 52, the positioning frame 51 is in an i-shaped structure, the positioning frame 51 can be made of silicon steel sheets, a lower magnetic resistance, a higher magnetic permeability and a lower eddy current loss are shown under the action of an alternating magnetic field, the inside of the positioning frame 51 is in a hollow structure, the production cost for replacing the detachable element 5 is reduced while the effective heat dissipation inside a stepping motor is realized, the replacement of the detachable element 5 is facilitated to be enhanced, the positioning frame 51, the shell 1 and the cleaning element 2 can form a closed rectangular body, the stator core 52 is fixedly installed at the center of the positioning frame 51, the stator core 52 is a hollow cylinder made of silicon steel sheets, 8 tooth sockets for installing coils are formed inside the stator core 52 in a circumferential array relative to the axis, and the installation of a stator winding is facilitated;

when in use, coils are wound on tooth grooves in the stator core 52, the detachable element 5 is pushed into the shell 1, the rotating mechanism 4 is rotatably arranged in the stator core 52, and the coils wound on the tooth grooves in the stator core 52 generate magnetic field force to drive the rotating mechanism 4 to rotate in the stator core 52;

the existing stator is usually fixedly arranged in a motor shell, and is difficult to take down, replace or repair when overheat damage occurs due to overload and other problems, so that the whole motor is scrapped, the detachable element 5 is in a modularized design, so that the detachable element 5 is slidably arranged in the shell 1, the replacement of the detachable element 5 is conveniently carried out when a coil is damaged, meanwhile, due to the design of a hollow structure, the heat dissipation of the coil is effectively improved, the service life of the detachable element 5 is prolonged, the production cost of the detachable element 5 is reduced, and the proportion of the damage of the detachable element 5 in the loss cost is reduced.

As shown in fig. 11, the casing 1 is made of the aluminum alloy material, the casing 1 has three surfaces, namely a front end surface, an upper end surface and a lower end surface, a boss is provided at a center position of the front end surface of the casing 1, a circular through hole for accommodating rotation of the output element 42 is provided at a center position of the boss, and the circular through hole also limits movement of the output element 42 in other directions, so that the rotation mechanism 4 can fix the whole stepping motor, and a distance between the upper end surface and the lower end surface of the casing 1 is equal to a height of the detachable element 5, thereby facilitating positioning of the detachable element 5 during assembly;

the shell 1 forms a closed rectangular body structure through the cooperation of the detachable element 5 and the cleaning element 2, the output element 42 rotates in a circular through hole on the front end surface of the shell 1, and when the detachable element 5 needs to be replaced, the damaged detachable element 5 can be pushed out of the shell 1 only by taking out the rotating mechanism 4;

the existing stepping motor shell 1 is generally of a fully-closed structure, the structure is complex and easy to damage, meanwhile, the stator is fixedly connected with the shell, when a coil needs to be replaced, the rear cover of the stepping motor shell is required to be opened, and then the stator is pulled out of the stepping motor, so that the coil replacement difficulty is high.

As shown in fig. 12, the cleaning element 2 is fixedly mounted on the housing 1 through welding, the cleaning element 2 is made of an aluminum alloy plate, a circular through hole is formed in the center of the cleaning element 2, a circle of bristles are mounted on a circumferential array at the bottom of the cleaning element 2, the diameter of each bristle is about 0.1 mm, so that effective cleaning of dust in a gap on the surface of the rotating mechanism 4 is ensured, four rectangular grooves are formed in the circular through hole on the cleaning element 2 with respect to the circumferential array of the axis, the fixing element 341 is matched with the rectangular grooves, and the inner diameter of the through hole on the cleaning element 2 is equal to the outer diameter of the self-locking device 3;

when the self-locking device 3 brings the rotating mechanism 4 out of the shell 1, the surface of the rotating mechanism 4 passes through the bristles on the cleaning element 2, so that tiny dust attached to the surface of the rotating mechanism 4 is cleaned, and when the self-locking device 3 is installed on the cleaning element 2 by the dismounting element 63, the fixing element 341 is matched with a rectangular groove formed in the cleaning element 2, so that the self-locking device 3 and the cleaning element 2 are locked;

the existing stepping motor generally needs to be independently cleaned by detaching the rotor inside the stepping motor, so that the time and cost for maintenance are increased, while the cleaning element 2 designed in the utility model can clean the rotating mechanism 4 while being carried out, and tiny dust can be effectively prevented from entering the inside of the shell 1 during normal operation, so that the normal operation of the rotating mechanism 4 inside is ensured.

As shown in fig. 13, the assembling apparatus 6 includes a workbench 61, a positioning element 62, a dismounting element 63, a replacing element 64 and a power supply element 65, wherein the workbench 61 is fixedly mounted on any plane by welding, the positioning element 62 is fixedly mounted on the workbench 61 by welding, the positioning element 62 adopts a circular strong magnet to firmly adsorb a stepping motor on the workbench 61, the dismounting element 63 is fixedly mounted on the right side of the workbench 61, the dismounting element 63 adopts an electromagnet, the replacing element 64 is fixedly mounted behind the workbench 61, the replacing element 64 adopts an aluminum alloy push plate, the two power supply elements 65 are respectively fixedly mounted on the dismounting element 63 and the replacing element 64, and the power supply element 65 adopts a 24V direct current power supply to control the movement of the dismounting element 63 and the replacing element 64;

when the detachable element 5 in the stepping motor needs to be replaced, the stepping motor is adsorbed on the positioning element 62, the power supply element 65 generates magnetic force for electrifying the dismounting element 63, the self-locking device 3 is adsorbed and simultaneously brings out the rotating mechanism 4, the power supply element 65 drives the replacing element 64 to push the intact detachable element 5 into the shell 1 and push out the damaged stator, and after the detachable element 5 is mounted, the dismounting element 63 sends the rotating mechanism 4 into the shell 1 to fix the whole stepping motor;

the existing assembly equipment generally adopts a mechanical arm to detach the bearing, detach the rotor, detach the support, detach the driving plate, detach the stator and the like, generally requires 10 minutes, has more complicated steps, and needs to collect and store detached parts, and is easy to cause part loss, so the assembly equipment 6 designed by the utility model specially maintains or assembles the stepping motor designed by the utility model, has simple assembly steps, can complete the assembly of the stepping motor within half a minute, does not need to collect and detach the dropped parts, effectively improves the assembly speed and the integrity of assembled finished products, and the whole assembly process is automatically completed by machinery without manual participation, thereby reducing the labor intensity of staff.

Example 2: since in the production line, the step motors with different precision are assembled for different working processes, when the step motors need smaller step angle to increase the number of coils, the number of grooves formed on the stator core 52 can be increased, so that more coils can be installed to reduce the step angle of the step motors, thereby realizing higher precision.

Example 3: besides maintenance work, the assembly equipment 6 can also realize automatic assembly of a plurality of stepper motors by adding a material storage box, and the PLC control board is used for controlling the movement of the disassembly and assembly element 63 and the replacement element 64, so that the assembly line of the stepper motors is realized, and the production efficiency of the assembly equipment 6 is improved.

In the working process of the utility model, the coil arranged on the stator core 52 can be overheated and damaged due to overload or long-time working, at this time, the detachable element 5 needs to be replaced, the stepper motor is placed on the positioning element 62, the detachable element 63 is adsorbed on the boss of the self-locking device 3 and electrified, the magnetic element 33 is upwards lifted under the action of adsorption force, the clamping element 342 clamps the locking element 45 under the elasticity of the guiding element 343, the fixed element 341 is retracted into the sealing element 31, the detachable element 63 brings the self-locking device 3 out, the rotating mechanism 4 is clamped out, at this time, the rotating mechanism 4 passes through the cleaning element 2, the cleaning element 2 cleans the surface of the rotating mechanism 4, then the replacement element 64 pushes the intact detachable element 5 into the shell 1, the detachable element 5 is pushed out under the action of adsorption force, after the detachable element 5 is arranged at a preset position, the detachable element 63 and the self-locking device 3 are clamped by the elastic element 33, the whole of the self-locking device is matched with the magnetic element 33, the self-locking device 2 is realized, and the self-locking device is locked by the self-locking element 33, and the self-locking device is realized.

The foregoing is merely illustrative of specific embodiments of the present utility model, and the scope of the utility model is not limited thereto, but any modifications, equivalents, improvements and alternatives falling within the spirit and principles of the present utility model will be apparent to those skilled in the art within the scope of the present utility model.

Claims (10)

1. The stepping motor and automatic assembly equipment thereof comprise a shell (1), a cleaning element (2), a self-locking device (3), a rotating mechanism (4), a detachable element (5) and assembly equipment (6), and are characterized in that the cleaning element (2) is fixedly arranged on the shell (1), the cleaning element (2) is used for cleaning the surface of the rotating mechanism (4) when the rotating mechanism (4) is taken out, and is matched with the self-locking device (3) to lock the whole stepping motor; the self-locking device (3) is movably arranged on the cleaning element (2), the self-locking device (3) is unlocked through magnetic force, the rotating mechanism (4) is carried out while the unlocking is carried out, and the self-locking device is automatically locked with the cleaning element (2) when the rotating mechanism (4) is arranged; the self-locking device (3) is rotatably provided with the rotating mechanism (4), and the rotating mechanism (4) is used for supplying power while fixing the detachable element (5); the detachable element (5) is slidably arranged in the shell (1), the detachable element (5) and the shell (1) form a closed rectangular body, and the detachable element (5) can be pushed into the shell (1) and provides a magnetic field force for rotation of the rotating mechanism (4); the assembly device (6) is used for specially assembling or maintaining the stepping motor in the utility model.

2. A stepping motor and automatic assembling apparatus thereof according to claim 1, wherein: the self-locking device (3) comprises a sealing element (31), an elastic element (32), a magnetic element (33) and a self-locking assembly (34), wherein the sealing element (31) is movably mounted on the cleaning element (2), the elastic element (32) is fixedly mounted in the sealing element (31), the magnetic element (33) is fixedly mounted on the elastic element (32), and the self-locking assembly (34) is slidably mounted in the sealing element (31).

3. A stepping motor and automatic assembling apparatus thereof according to claim 2, wherein: the boss is arranged at the center of the upper end of the sealing element (31), the circular cavity is arranged at the center of the inner part of the sealing element (31), rectangular channels are arranged on the circular array of the circle center of the cavity, and a circular through hole is arranged at the center of the lower end of the sealing element (31).

4. A stepping motor and automatic assembling apparatus thereof according to claim 3, wherein: the bottom of magnetic element (33) with elastic element (32) fixed connection, magnetic element (33) adopts the permanent magnet material, magnetic element (33) are umbrella-shaped structure, magnetic element (33) top slightly uplift, through-hole has been seted up at magnetic element (33) center.

5. The stepping motor and automatic assembling apparatus thereof according to claim 4, wherein: the self-locking assembly (34) comprises a fixing element (341), a clamping element (342) and guide elements (343), wherein the fixing element (341) is slidably installed in the sealing element (31), the clamping element (342) is fixedly installed on the fixing element (341), and the guide elements (343) are fixedly installed on two sides of the fixing element (341).

6. A stepping motor and automatic assembling apparatus thereof according to claim 1, wherein: the rotating mechanism (4) comprises a rotating element (41), an output element (42), an insulating element (43), a supporting element (44) and a locking element (45), wherein the rotating element (41) adopts a permanent magnet, the output element (42) is fixedly arranged on the rotating element (41), the insulating element (43) is slidably arranged on the output element (42), two supporting elements (44) are symmetrically arranged at two ends of the rotating element (41) in a rotating mode, the locking element (45) is fixedly arranged on the rotating element (41), and a circle of annular grooves matched with the self-locking device (3) are formed in the upper end of the locking element (45).

7. A stepping motor and automatic assembling apparatus thereof according to claim 1, wherein: the detachable element (5) comprises a locating frame (51) and a stator core (52), the locating frame (51) is of an I-shaped structure, the stator core (52) is fixedly arranged at the center of the locating frame (51), and the locating frame (51) and the shell (1) and the cleaning element (2) form a closed rectangular body.

8. A stepping motor and automatic assembling apparatus thereof according to claim 1, wherein: the shell (1) adopts an open structure, the shell (1) is provided with three surfaces, namely a front end surface, an upper end surface and a lower end surface, a boss is arranged on the front end surface of the shell (1), a through hole for accommodating the movement of the rotating mechanism (4) is arranged at the center of the boss, and the distance between the upper end surface and the lower end surface of the shell (2) is equal to the height of the detachable element (5).

9. A stepping motor and automatic assembling apparatus thereof according to claim 1, wherein: the cleaning element (2) is fixedly arranged on the shell (1), a circular through hole is formed in the center of the cleaning element (2), a circle of brush hair is arranged on the circumferential array at the bottom of the cleaning element (2), four rectangular grooves are formed in the circular through hole on the cleaning element (2) in relation to the circumferential array at the axis, and the inner diameter of the through hole on the cleaning element (2) is equal to the outer diameter of the self-locking device (3).

10. A stepping motor and automatic assembling apparatus thereof according to claim 1, wherein: the assembly equipment (6) comprises a workbench (61), a positioning element (62), a dismounting element (63), a replacement element (64) and a power supply element (65), wherein the workbench (61) is fixedly installed on any plane, the positioning element (62) is fixedly installed on the workbench (61), the dismounting element (63) is fixedly installed on the right side of the workbench (61), the replacement element (64) is fixedly installed behind the workbench (61), and the two power supply elements (65) are respectively fixedly installed on the dismounting element (63) and the replacement element (64).

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