JPS6037698B2 - Magnet automatic insertion device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic magnet insertion book that automatically inserts a plurality of magnets into a rotor case of a motor.

As a conventional method of inserting the above-mentioned magnet, first, as shown in FIG. 1, a cylindrical magnet is inserted.

A method in which a waste odor 2 for insertion is stored in a data case 1 in advance, and a plurality of arc-shaped magnets 3 are inserted one by one by hand while regulating the position with this jig 2. Then the second
As shown in the figure, the insertion jig 5 is inserted into the dodecagonal rotor case 4 in advance, and the 12 rectangular magnets 6 are manually inserted while regulating the position with the jig 5. How to insert each item one by one. Furthermore, as shown in FIGS. 3A and 3B, the rotor case 4 into which the pick-up tool 5 is inserted in advance is configured to be rotatable around a horizontal center, while the 12 magnets 6 are arranged in a line. A magazine (jig) 7 stored in advance is provided, and this magazine 7 is configured to be linearly movable in its longitudinal direction. While the magazine 7 is intermittently fed one pitch at a time, the rotor case 4 is moved in synchronization with this. There is a method in which the magnets 6 stored in the magazine 7 are automatically inserted into the rotor case 4 one by one by the pusher 8 in synchronization with the rotating pitches intermittently. However, these conventional methods have the following defects. '1} In the manual insertion method as shown in Figures 1 and 2, it is necessary to be very careful not to insert the magnet in the wrong position (polarity), resulting in very poor workability and high product costs. It gets expensive.

Also, since the insertion position is specified, defects are likely to occur. ■
The method using a magazine as shown in FIG. 3 not only requires the magazine as a special part, but also requires manual labor to insert (storage) the magnet into the magazine.

Furthermore, since the method involves intermittently inserting the magnets into the rotor case one by one and repeating this 12 times, the work is time consuming and is not substantially different from the method of inserting the magnets by hand, resulting in poor workability. Furthermore, each time the magnet insertion into the rotor case is completed, the magazine must be recovered one by one, which also impairs work efficiency. Furthermore, since it is composed of many mechanisms such as the intermittent feeding mechanism of the magazine, the intermittent rotation mechanism of the rotor case, the intermittent drive mechanism of the pusher, and their synchronization mechanism, the overall structure of the device becomes extremely complex and large. Equipment costs are also high. The present invention was invented in view of the above-mentioned circumstances, and it is capable of automatically and extremely smoothly performing a series of operations from magnetizing the magnet to inserting the magnetized magnet into the rotor case. In particular, it is an object of the present invention to provide an automatic magnet insertion device that can insert magnets into a rotor case with extremely high efficiency and precision.

An embodiment of an automatic magnet insertion device to which the present invention is applied will be described below with reference to the drawings.

First, in this automatic magnet insertion device, a rectangular magnet 11 is used as a workpiece, as shown in FIG. 4A.

Also, the magnet 11 is inserted. data case 1
2 has a dodecagonal shape, and 12 magnets 11 are inserted inside it. Note that a magnet holding jig 13 is stored in the rotor case 12 in advance.
This automatic magnet insertion device performs a series of steps such as supplying the workpiece, magnetizing the workpiece, and inserting the workpiece into the rotor case. In particular, after magnetization, the 12 magnets 11 are moved from the horizontal position as shown in Figure 4A. Rotor case 12
Transform into a cylinder around the vertical axis of the cylinder at the top position of .

Then, the 12 magnets 11 are simultaneously inserted into the rotor case 12 as shown in FIG. 4B in one insertion process. By this insertion, the 12 magnets 11 are connected to the rotor case 12 by the 12 springs 14 of the odor control 13.
It is firmly pressed and fixed. In this state, the 12 magnets 11 are adhered to the rotor case 12 with adhesive, and then the jig 13 is removed from the rotor case 12 as shown in FIG. 4C, and the rotor 15 of the motor is formed. . Note that the motor in this case is a two-phase, four-pole brushless motor. Next, a series of steps performed by this automatic magnet insertion device will be sequentially explained with reference to FIGS. 5 to 10.
Note that FIGS. 5 to 10 show the magnet with the movement guide plate removed. First, as shown in FIG.
, magnet magnetized section 18 , magnet cylindrical conversion section 19
, a magnet insertion portion 201.

First, as shown in FIG. 5, 24 unmagnetized magnets 22 are conveyed in a row by the belt conveyor 23 and supplied to the magnet supply section 17 from the direction of arrow A. The transferred and fused magnet 22 is placed at a predetermined position in the magnet supply section 17 by a stopper 2.
It hits 4 and stops in a ball-like manner. Next, the pusher 26 having 12 push rods 25 provided in the magnet supply section 17 starts moving in the direction of arrow B perpendicular to the direction of arrow A.

As shown in FIG.
2, every other 12 magnets 22 are pushed out in the direction of arrow B, and these magnets 22 are connected to the 4 main yokes 28 provided in the magnet magnetization section 18,
The pupils are placed on the upper part of the four dummy yokes 29. At this time, the four dummy yokes 29 are connected to the four main yokes 2.
The extrusion stroke of four extrusion rods 25a among the IZ extrusion rods 25 is the extrusion stroke of the other eight extrusion rods 25. It is configured to be shorter than the stroke. And under this situation, magnet 2 was pushed out as described above.
8 magnets 22 out of 2 are connected to 4 main yokes 2
Two magnets 22 are placed on top of each of the four dummy yokes 29 along their entire length.
One each is sent to the top by a predetermined depth from their end faces. Next, in the above state, all the yokes 28 and 29 are energized, and these yokes 28 and 29 generate 12
The magnets 22 are magnetized simultaneously.

However, at this time, the eight magnets 22 mounted on the main yoke 28 are magnetized over their entire length to form a main magnet, and the four magnets 22 mounted on the dummy yoke 29 are magnetized over their entire length. is formed into an auxiliary magnet by magnetizing only its ends to a certain depth. For the magnets after magnetization, the reference numeral 11 mentioned above will be used from now on, the main magnet will be written as 11a, and the auxiliary magnet will be written as 1.
It is written as 1b. Next, the pusher 26 starts moving in the direction of arrow B again, and the magnets 11 after magnetization are pushed out in the direction of arrow B by the extrusion rod 25 as shown in FIG. Part 1
Each of the magnets is remounted on the 12 magnet holding members 31 provided at 9.

At this time, the four extrusion rods 25a that extrude the four auxiliary magnets 11b are extruded at twice the speed of the other eight extrusion rods 25 by a fast-forwarding mechanism provided in the pusher 26. As a result, when the 12 magnets 11 reach the magnet holding portion village 31, the main magnets 11a and the auxiliary magnets 11b are arranged in a line. Further, after this extrusion is completed, the pusher 26 is moved back to the return position shown in FIG. On the other hand, each of the twelve magnets 11 is attracted and held onto each magnet holding member 31 by its own magnetic attraction force. By the way, as shown in FIGS. 11 to 13, the 12 magnet holding members 31 are rotatably connected to each other via terminal pins 32 and connected in series. It constitutes a mechanism 33. This link mechanism 33 is housed in a groove 35 provided along the center of a rotating holder 34 constituted by a rotating shaft, and a pin 32a in the longitudinal center of the link mechanism 33 is attached to this groove 35. It is supported by a rotating holder 34, and this pin 32a is configured as the rotation center of the entire link mechanism 33. Next, the high rotor 37 provided in this magnet cylindrical converter 19 is driven to rotate 900 degrees by air, and the rotation holder 34 is rotated by 900 degrees in the direction of arrow C through the gears 38 and 39.
The link mechanism 33 is rotated to 90o as shown in FIG.
The direction is changed to .

As a result, the 12 magnets 11 held by the magnet holding member 31 are changed from the horizontal state to the vertical state. Next, another high rotor 40 provided in this magnet cylindrical conversion part 19 is
00 rotationally driven.

Then, the pair of rotating shafts 41, 42 are connected to the pair of gears 43, 4.
4 is rotated to 90o in opposite directions, and a pair of rotating arms 45 and 46 attached thereto are rotated to 90o in directions of arrows D and E, which are mutually opposite directions. Both of these rotary arms 45 and 46 have a pair of connecting rods 48 and 49 connected between their tip ends and both ends of the link mechanism 33 in the longitudinal direction, so that both ends of the link mechanism 33 in the longitudinal direction are connected in the direction indicated by the arrow D. It is pushed out in the E direction. Furthermore, the 11th
Both connecting rods 48, 49 as shown in FIGS.
The tip of the link mechanism 3 is located at the axial center position of the rotation holder 34.
Since the rotation holder 34 is pivoted to a pair of levers 52 and 53 which are rotatably pivoted to both ends of the longitudinal direction of the holder 3 through a pair of pivot pins 50 and 51, the rotation holder 34 is rotated in the direction of the arrow C as described above.
These connecting rods 48
, 49 and the IJ link mechanism 33, no twisting or the like occurs at all. As described above, both ends of the longitudinal direction are pushed out, and the link mechanism 33 rotates around the central pivot pin 32a, and is pushed out from inside the rotary holder 34 to its external position, that is, the magnet insertion part 201. Then, it is rolled into a cylindrical shape as shown in FIG.

In addition, at this time, the 12 magnet holding portion villages 31 are mutually abutted to each other by trapezoidal angle regulating surfaces 54 provided thereon, and are mutually angularly regulated.
It becomes cylindrical as shown in the figure. As a result of the above, 1 held by each of these 12 magnet holding members 31
The two magnets 11 are transformed into a cylindrical shape in the magnet insertion portion 20 around the vertical cylindrical center as shown in FIG. On the other hand, the magnet insertion part 2 has a button 5 in which 12 vertical extrusion pins 55 are arranged in a cylindrical shape.
6 is provided. These push-out pins 55 are respectively opposed to the upper portions of the twelve magnets 11 which have been converted into cylindrical shapes as described above. Also, the magnet 1
The rotor case 12 described above is expected at the bottom of the rotor case 1. Then, in the above state, the pusher 56 is lowered in the direction of arrow F as shown in FIG.
The magnets 11 are pushed downward, and these magnets 11 are pushed out to the rotor case 1 as explained in FIG. 4B.
2 are inserted simultaneously.

In addition, at this time, as shown in FIG.
It is inserted into a holding hole 58 provided in 7 and held so as to be freely movable in the vertical direction. And these extrusion pins 55
are each pressed downward by a compression spring 59, and the amount of downward protrusion is regulated by a stopper ring 601. Therefore, the compression spring 59 is compressed from the moment the lower ends 55a of the push-out pins 55 come into contact with the magnets 11 when the magnets are inserted as described above.
The magnet 11 is inserted into the rotor case 12 against the spring force of the compression spring 59. The IZ number of ejector pins 55 are divided into three blocks, for example, with each block having four pins, and the effective lengths of the four ejector pins 55 in one block are sequentially scaled from 1 to 14. It is changing into a shape.

Therefore, steps 9 to & are provided at the heights of the lower ends 55a of these four ejector pins 55, and when the above-mentioned magnet is inserted, these four ejector pins 55 reach a predetermined height as shown in FIG. 14B. These are pushed out by coming into contact with the magnet 11 sequentially at time intervals. However, pusher 5
6 is completely lowered to a predetermined position, all the push-out pins 55 are provided on the side surface of the link mechanism 33 as shown in FIG. It is supported on the height regulating surface 62 and stopped at a constant height.

Therefore, as shown in FIG. 14C, the insertion heights of the twelve magnets 11 into the rotor case 12 by these push-out pins 55 are precisely aligned to a constant height. Further, when inserting the magnets as described above, the 12 magnets 11 are guided and inserted between the 12 guide pieces 63a of the insertion guide 63, as shown in FIGS. 15 and 16.

Therefore, the twelve magnets 11 are inserted into the rotor case 12 at predetermined correct intervals and in a vertical direction.
Note that the insertion guide 63 is inserted into the pusher 6 when the rotor case 12
When the rotor 4 is raised from below to a predetermined height position and positioned, it is relatively inserted into the rotor case 12 by the guide piece 63a. With the above steps, a series of steps of this automatic magnet insertion device are completed. Thereafter, the pusher 56 is moved back to the return position shown in FIG. Further, due to the reverse rotation drive of the high rotor 40, both rotating arms 45 and 46 are moved back to the return position shown in FIG. After that, no. The motor 37 is driven to rotate in the opposite direction, and the link mechanism 33 is rotated back to 90 degrees by the rotating holder 34, and returned to the upward position as shown in FIG. On the other hand, the rotor case 12 is lowered to a predetermined layer by the lowering of the pusher 64, and is then transferred to the next magnet insertion step. In the embodiments described above, the magnet 11 can be converted into a cylindrical shape very simply, easily, and accurately, especially by using the link mechanism 33 of Class 12 to convert the magnet 11 into a cylindrical shape.

Moreover, the link mechanism 33 is connected to the rotating holder 34 at 90°.
o, the horizontally transferred magnet 11 is turned vertically, and then the link mechanism 33 converts the magnet 11 into a cylindrical shape, and the magnet 11 is simultaneously inserted into the rotor case 12. Since this is adopted, the rectangular magnet 11 can be laid horizontally and transferred extremely smoothly until just before the magnet is inserted into the rotor case 12. Also rotor case 12
When the magnet is inserted into the magnet, the extrusion pin 55 whose effective length is successively changed is configured to sequentially push out the magnet 11, so that a large load is not momentarily applied to the pusher 56 when the magnet is inserted. As a result, the pressing force of the pusher 56 can be reduced.

Although the embodiments of the present invention have been described above, the magnet transfer means, magnet magnetization means, magnet cylindrical conversion means, magnet insertion means, etc. referred to in the present invention are not limited to the foundations shown in the embodiments. , and can be modified to a variety of other valid structures.

In particular, in the embodiment, 12 square magnets are used and are inserted into a dodecagonal rotor case, but the technology of the present invention can also be applied to a case where an arcuate magnet is inserted into a cylindrical rotor case. You can fully apply the concept.

According to the present invention, as described above, a series of operations from magnetizing the magnet to inserting the magnetized magnet into the rotor case can be performed automatically and extremely smoothly.

Furthermore, since there is no possibility of erroneously inserting the magnet in the position (polarity), the number of defects is greatly reduced. In particular, after the magnet is converted into a cylindrical shape, it is pushed out in the axial direction of the cylinder and inserted into the rotor case at the same time, so the magnet can be inserted into the rotor case in one insertion process. This can be done extremely efficiently and with high precision. In addition, compared to the subordinate automatic machines shown in Figures 3A and 38, the structure of the entire device can be made very simple, it can be made smaller, and equipment costs can be reduced. This has the advantage of further improving workability.

[Brief explanation of the drawing]

FIG. 1, FIG. 2, FIG. 3A, and FIG. 38 are perspective views illustrating examples of sub-functions. 4A to 16 show an embodiment of the present invention, and FIGS. 4A to 4C are perspective views illustrating how to insert the magnet into the rotor case, and FIGS. Figure 10 is a perspective view illustrating a series of steps from supplying the magnet to feeding and inserting the magnet into the rotor case after magnetization, and Figure 11 illustrates the link mechanism part of 12. A plan view, FIG. 12 is a cross-sectional view along the Chi-Yanagi line in FIG. 11, FIG. 13 is a plan view of the magnet converted into a cylindrical shape by the link mechanism, and FIGS. 14A to 14C are the extrusion pin portion. FIG. 15 is a cross-sectional view explaining the insertion guide portion, and FIG. 16 is the -X of FIG.
It is a sectional view taken along the W line. In addition, in the symbols used in the drawings, 11... magnet after magnetization, 12...
...Rotor case, 17...Magnet supply joint part, 18...Magnet magnetized part, 19...
... Magnet cylindrical conversion part, 20 ... Magnet insertion part, 22 ... End magnetized magnet, 2
3...Belt conveyor, 25...Extrusion rod, 26...
Butcher, 28... Main yoke, 29... Dummy yoke, 31... Magnet holding member, 32...
・Pivot pin, 33...Link mechanism, 34...
... Rotating holder, 55 ... Extrusion pin, 56
...Putsiyah. Figure 3B Figure 1 Figure 2 Figure 3A Figure 4B Figure 10 Figure 4A Figure 4C Figure 5 Figure 6 Figure 7 Figure 8 Figure 9 Figure 11 Figure 12 Figure 13 Figure 14A Figure 14B Figure 14C Figure 16 Figure 15

Claims (1)

[Scope of Claims] 1. means for arranging a plurality of unmagnetized magnets in a line and transporting them to a magnetized position; means for magnetizing the transported plurality of unmagnetized magnets in a predetermined state; A means for converting the plurality of magnetized magnets into a cylindrical shape, and a jig for pushing the magnets converted into a cylindrical shape in the axial direction of the cylinder and holding the magnets are housed in a rotor case. and a means for simultaneously inserting magnets. 2. A link mechanism is provided in which a plurality of magnet holding members are rotatably connected to each other and connected in series, and when this link mechanism is expanded horizontally, the above-mentioned magnet holding members are mounted on the plurality of magnet holding members. Converting the plurality of magnets held on the plurality of magnet holding members into a cylindrical shape by simultaneously supplying a plurality of magnetized magnets and then rolling the link mechanism into a cylindrical shape. An automatic magnet insertion device according to claim 1, configured as follows. 3. A plurality of extrusion pins are provided for extruding the plurality of magnets converted into cylindrical shapes in the axial direction of the cylinder and inserted into the rotor case, and the effective lengths of these extrusion pins are sequentially changed. 2. The automatic magnet insertion device according to claim 1, wherein the magnet is sequentially pushed out at predetermined time intervals using a push-out pin. 4. The link mechanism is held in a rotating holder that can rotate approximately 90 degrees, the plurality of magnetized magnets are held horizontally on the plurality of magnet holding members, and then the rotating holder is The plurality of magnets are transformed into a vertical shape by rotating approximately 90 degrees, and then the plurality of magnets are transformed into a cylindrical shape around the axis of the vertical cylinder by rolling the link mechanism into a cylindrical shape. 2. The automatic magnet insertion device according to claim 2, which is configured to convert the magnetic field into the magnetic field.