JPS607898B2 - Stator core manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for manufacturing a stator core used in, for example, an automobile generator.

For example, the stator core of a small generator, such as an automobile generator, is made by punching out multiple pieces of magnetic material into circular shapes.
These were laminated and fixed by welding or caulking rivets. However, when such circular punching of magnetic material is performed, the punched center and peripheral parts of the magnetic material are discarded and these parts are not used for any other purpose, making it difficult to utilize the magnetic material. The rate was extremely poor and it was uneconomical. In addition, since conventionally a single sheet of magnetic material was quite thin, it was difficult to automatically stack these circularly punched magnetic materials and fix them by welding, etc. Therefore, in manufacturing the stator core, we 2. Description of the Related Art A method for manufacturing a stator core that aims at effective use of magnetic materials and automation of manufacturing is desired, but one aspect of the manufacturing method is already known.

This material is made by cutting out one end of a band-shaped magnetic material.
This notched band-shaped magnetic material is spirally wound and cut into predetermined lengths to form separate magnetic cores. The stator core is automatically manufactured by compressing and welding these magnetic cores. Furthermore, there is also known a manufacturing apparatus based on the conventional manufacturing method, which aims to effectively utilize magnetic materials and automate the manufacturing process (Japanese Patent Publication No. 38-18403).

However, when manufacturing a stator core using this device, no improvement in workability can be expected, and the device itself has the drawback of becoming larger. This invention was made in order to eliminate the drawbacks of this invention, for example, in the above-mentioned manufacturing method, the magnetic iron i○ itself is automatically moved in order to carry out a predetermined operation. , a new stator core that aims to improve the workability of manufacturing the stator core and miniaturize the device itself, based on the principle that the movement operation is responsible for the above-mentioned predetermined work during this movement. The present invention provides manufacturing equipment for.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a stator core manufacturing apparatus according to the present invention will be described in detail below with reference to FIGS. 1 to 5.

FIG. 1 is a block diagram showing the entire manufacturing process for completing a single stator core from a strip-shaped magnetic material. In the figure,
Reference numeral 1 denotes an uncoiler to which a roll of strip-shaped magnetic material 100 is attached. Reference numeral 2 denotes a shingle, which corrects the distortion caused by the band-shaped magnetic material 10 drawn out from the uncoiler 1.

Reference numeral 3 denotes a punching press, which forms appropriate notches in both traverse portions of the strip-shaped magnetic material 100 that has passed through the leveler 2 while passing through it, and also forms a predetermined slot in the center thereof.

In FIG. 1, a plan view la of the strip-shaped magnetic material 100 before passing through the punching press 3 and a plan view lb of the strip-shaped magnetic material 101 after passing through the punching press 3 are shown. As shown in FIG. 1b, the band-shaped magnetic material 101 that has passed through the punching press 3 has teeth portions 102 formed at approximately equal intervals.
Two continuous bodies 104 and 105 each have a bottom portion 103 that integrally supports the tooth portion 102.

These two continuous bodies 104 and 105 each have a tooth portion 1
02 and 103 are molded at the same time so that they mesh with each other. Then, the strip-shaped magnetic material 10 passed through the punching press 3
1 is separated as shown in the plan view lc in FIG. 1 to obtain separate continuous bodies 104 and 105. Reference numerals 4 and 4 indicate arms which have the function of holding the continuous body 104 and the continuous body 105 in a separated state.

5a and 5b are first and second winding machines having the same function, and the continuous body 10 passes through while being separated by arms 4, 4.
4 and 105 are introduced into the continuum guide holes 5al and 5bl, respectively, and the introduced continuum bodies 104 and 105 are wound spirally and cut into a predetermined length, respectively.The magnetic core is then pressed and welded. After completing these operations, the constructed stator iron DI06 is discharged.

In FIG. 1, a continuous body 10 is
4 shows a cross-sectional view ld of a continuous body 104 that is spirally wound with the tooth portion 102 of No. 4 on the inside and the bottom portion 103 on the outside. 6 is a conveyor, and the first and second winding machines 5a, 5
The magnetic stator core 106 discharged by b is transported.

A forming press 7 compresses the stator core 106 conveyed by the conveyor 6 again to improve the dimensional accuracy of the stator core in the vertical direction.

Therefore, the strip magnetic material 1 derived from the uncoiler
00 passes through the shingle 2 to bridge any distortions, etc., and the corrected band-shaped magnetic material 101 is pressed into the tooth portion 1 by the punching press 3.
02 and a bottom 103, respectively.
105 is configured.

The two continuum bodies 104, 105 are separated separately, and the arms 4,
The first and second windings 5a, 5 are separated by 4.
b.

The continuous bodies 104 and 105 introduced into the first and second winding machines 5a and 5b are helically wound and cut into a predetermined length to form a magnetic core. This magnetic iron 'D'
The first and second winding machines 5a and 5b perform necessary operations on the stator core, and the stator core is discharged onto the conveyor 6. The stator core 106 discharged onto the conveyor 6 is transported and compressed again by the forming press 7 to obtain a completed stator core. FIG. 1 shows a perspective view le of the magnetic stator core 106 discharged onto the conveyor 6 by the first or second winding machine 5a, 5b.

8 is a series of strip-shaped magnetic materials by welding the rear weave of the drawn-out strip-shaped magnetic material and the tip of a new roll of strip-shaped magnetic material when all of the strip-shaped magnetic material 1 attached to the uncoiler 1 is drawn out. It is intended to be used as a magnetic material.

However, FIG. 2 shows the first winding machine 5a (second winding machine 5b).
The same applies to the configuration.

), and FIG. 3 shows a cross section taken along line mm in FIG. 2 and a view of the ejection mechanism section, which will be described later, as seen from the direction of arrow A for ease of explanation.
Hereinafter, the detailed configuration of the first winding machine 5a will be explained based on FIGS. 2 and 3.

In the figure, 5 rivers are a rotating body in the shape of a modified quadrangular prism as shown in the same figure, and are intermittently rotated by 900 degrees in the direction of arrow A around a rotating shaft 50a.

Reference numerals 51a and 51b indicate operating rods that are movable bodies that extend perpendicularly to each other and pass through opposite side views 51c and 51c of the rotating body 50, respectively. Cylindrical parts 513, 513 which are holding parts
are provided, and locking portions 51d, 51d are provided adjacently inside these cylindrical portions 513, 513, and there are approximately the same distance between these locking portions 51d, -51d and the rotating body 50. The cylindrical portions 513, 513 are connected to the side surfaces 51c, 51c by tensioning the springs 512, 512, respectively, each having a spring force of
It is maintained at approximately the same level of protrusion.

Further, the central portions of the operating rods 51a and 51b are removed within a certain range so that they can move in the longitudinal direction (in the direction of rotation about the rotating shaft 50a). 52 is the retainer 5
3, which is screwed into a female thread 514 formed on the actuator 51a, 51b from the cylindrical portion 513 side.

Reference numeral 54 denotes a stand to which the retainer 53 is attached, and is raised and lowered by a air cylinder 55.

Reference numeral 56 denotes a mandrel, which serves as a central axis when winding the continuous body 104 introduced from the continuous body guide hole 5al in a spiral manner, and also serves as a central axis for winding the continuous body 104 introduced from the continuous body guide hole 5al. It is also meant to be held for a certain amount of time.

Reference numeral 59 is an air cylinder that pushes the magnetic core held by the mandrel 56 toward the rotating body 50.
The magnetic iron core is moved from the tip end portion 56a to the operating rod 51a or 51b through the operating process described below.

57 is a air cylinder, and operating rods 51 are arranged opposite to each other.
By pushing the cylindrical portion 513 of a or 51b, the operating lever 51a or 51b is moved, and the cylindrical portion 513 provided on the opposite side is brought into contact with the mandrel 56.

Numerals 581 and 581 are claws provided on both sides of the discharge port 583 of the stator core 106 on which the magnetic core has been pressed and welded, and are biased toward the discharge port 583 by springs 582 and 582.

Thus, for example, when the stator iron DI06 attached to the cylindrical portion 513 of the operating rod 51a is placed on the discharge port 583 and the operating rod 51a moves downward, the stator iron core 106 is attached to both claws 581. , 581 to springs 582, 58
Push it out against the urging force of 2.

In this way, the magnetic stator core 106 is completely inserted into the discharge port 583. At this time, both claws 581, 581 return due to the urging force of the springs 582, 582, and the discharge port 583
(the state shown in the figure) is that it partially protrudes from both sides of. Therefore, when the operating rod 51a moves upward, it is locked by the stator cores 581, 581 and cannot move upward, and is eventually discharged into the discharge port 583.
Here, the claw 581, the spring 582, the discharge port 583, and the air cylinder 58 constitute a discharge mechanism section. 58
is a air cylinder for pushing out the stator core discharged into the discharge port 583 and placing it on the conveyor 6.

Thus, the mandrel 56, the retainer 53 that holds the male screw 52, the air cylinder 57, and the ejection mechanism are connected to the rotating body 50.
The rotary bodies 5 are arranged at intervals of 900° around the periphery of the rotating body so that each cylindrical portion 513 of the operating rods 51a and 61b stands still at a position facing the mandrel 56, retainer 53, air cylinder 57, and ejection mechanism. It is configured to perform intermittent rotation.

Hereinafter, the same applies to the first winding machine 51a (second winding machine 51b) having such a configuration.

) will be explained using FIGS. 3 to 5. First, when the rotating body 50 comes to rest in the state shown in FIG.
13 is supported by Mandrel 56. At this time, since the male screw 52 is lowered by the air cylinder 55 without rotating, the operating rod 51a is pushed by the male screw 52 and lowered. The stator core attached to the cylindrical portion 513 of the operating rod 51a on the ejection mechanism side has both claws 581
, 581 are expanded and inserted into the discharge port 583. Such a situation is shown in FIG. Next, on the one hand, the fluid cylinder 59 pushes the magnetic core held by the mandrel 56 and transfers it from the mandrel 56 to the cylindrical portion 513 of the operating rod 51b in contact with it. On the other hand, the male thread 52 starts rotating, thereby causing the operating rod 51
It is screwed together with the female thread 514 of a. Therefore, the operating rod 51a is pulled upward. Due to this lifting action of the operating rod 51a, the magnetic stator iron D inserted into the outlet 583 as described above is discharged into the outlet 583 and is attached to the cylindrical portion 513 on the male thread 52 side of the operating rod 51a. The magnetic iron core is compressed between the bottom portion 515 of the operating rod 51a and the retainer protrusion 531. Arc welding is then performed in this compressed state in an inert gas (for example, argon) atmosphere to obtain a magnetic stator core that has been compressed and welded. Such a situation is shown in FIG. By operating the operating rods 51a and 51b independently in this manner, after performing the above-mentioned predetermined work, the air cylinders 57 and 59 return to their original states, and the male screw 52 rotates in the opposite direction to open the female screw. Leaves 514.

Therefore, the operating levers 51a and 51b are brought into an equilibrium state as shown in FIG. 3 by the action of the spring 512. At this time, a magnetic core is attached to the cylindrical portion 513 of the operating rod 51b facing the mandrel 56, and the cylindrical portion 513 facing the air cylinder 57
is equipped with a magnetic stator core that has already been compressed and welded. Moreover, the stator core, which has been compressed and welded, is still attached to the cylindrical portion 513 facing the male screw 52 of the operating rod 51a on the one hand, and the stator iron ○ is still attached to the cylindrical portion 513 facing the ejection mechanism portion on the other hand. It is discharged to the discharge mechanism. In this way, after both the operating levers 61a and 51b reach an equilibrium state as shown in FIG. 3, the rotating body 5 rotates by 900 degrees, and the above-described operations are repeated again.

As described above, the stator iron 0G, which has been compressed and welded by the first and second winding machines 5a and 5b, is automatically and dynamically placed one after another on the conveyor 6, and is conveyed to the press forming machine 7 by this conveyor 6. Ru.

As described above, the rotating body 50 used in the first and second winding machines 5a and 5b has a modified quadrangular column shape as shown in FIGS. 3 to 5, and this modified quadrangular column shaped rotating body 50 Although we have described a structure in which two operating rods are installed perpendicular to each other, there are other methods, for example, as shown in FIG.
The rotating body may have a prismatic shape, and three operating rods may be attached to the rotating body so as to form an angle of 600 degrees with respect to each other.

Of course, as shown in FIG. 7, a structure in which a plurality of two operating rods orthogonal to each other are loosely fitted to a modified rectangular prism-shaped rotating body may also be used. In this case, a single winding machine using a rotary body having such a configuration can be used to form a continuum divided into two rows without using the two first and second winding machines 5a and 5b as described above. 104 and 105 can be simultaneously subjected to the necessary processing as described above. Furthermore, in the above-mentioned embodiment, the spring 512 is disposed outside the rotating body 50 and is stretched between the stop portions and 51d of the operating rods 51a and 51b and the rotating body 50. The invention is not limited to this, but as shown in FIG.
A configuration may also be adopted in which a protrusion 515 is provided on a part of the operating rods 51a and 51b inside the rotary body 50, and a spring 512 is stretched between the protrusion 515 and the inner surface of the rotating body 50.

Furthermore, as shown in FIG. 9, there is shown a structure in which a means such as pneumatic pressure or hydraulic pressure is used instead of using the spring 512. In this configuration, the operating lever is composed of a piston 517 in a cylinder 516, which is arranged so as to maintain an equilibrium state in the non-operating state of each process, and when an operation is required, the piston moves in the required direction. A valve (not shown) is opened and closed in this manner. In this case, the air cylinder 57 described above is unnecessary, and the male screw 52 used as a means for applying pressure for interlayer adhesion in the welding process and the female screw 514 provided on the cylindrical part above the operation can apply pressure to the piston. Since it can be done, it is not necessary. Further, there is no need to specially install the retainer 53 of the male screw 52, the retainer stand 54, and the shear cylinder 56 for vertically moving the retainer 54. Furthermore, the 10th
The figure shows another embodiment in which the rotating body is arranged horizontally.

That is, although the above-mentioned rotating body is shown in which the plane including the substantial axial center line of the operating rods 51a and 51b is perpendicular to the ground, it can also be arranged horizontally. This is effective when the arrangement and location of the winding machine itself is restricted by conditions such as the external environment, such as the height of the ceiling. As explained above, the manufacturing apparatus for stator iron 0 according to the present invention is such that the lotus body performs a radial movement centering on the rotation axis at least on the outside of the shank body, which performs a constant intermittent movement around the rotation axis. A movable body is supported by the movable body, and working means for performing different operations on the magnetic core attached to the movable body are arranged at fixed angles around the cliff body, and the working means is arranged in the direction of the movable body. Since the structure is such that the stator core is manufactured by performing the above-mentioned operations on the magnetic core in conjunction with the operation, the magnetic core to which each operation is performed can be manufactured by the radial movement of the movable body. The weight is transferred to each work means, and the longitudinal movement of the movable body accompanying this transfer is responsible for each of the above operations, so work efficiency is further improved, and the weight itself is connected to a rotating structure. Therefore,
It has the advantage of being extremely compact.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing the entire structure of an embodiment of a stator core manufacturing apparatus according to the present invention, and FIG.
An enlarged detailed view of the winding machine in FIG. 3 is taken from m-m in FIG.
Figures 4 and 5 are diagrams showing a cross section cut along a line and a discharge mechanism section viewed from the direction of arrow A, and Figures 4 and 5 are for explaining the operation of the first winding machine shown in Figure 1. Operation diagram,
6 to 10 are diagrams showing other embodiments of essential parts of the first winding machine. Note that the same reference numerals in the figures indicate the same or equivalent parts. 50... Rotating body, 50a... Center line, 51
a, 51b... Action sequence, 55, 57, 58, 5
9...Air cylinder, 512...Spring, 516...Cylinder, 517...Piston, 513...Cylindrical portion. Figure 6 Figure 7 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 Figure 8 Figure 9 Figure 10

Claims (1)

[Claims] 1. Means for spirally winding a band-shaped magnetic material having one edge notched continuously around a mandrel, and cutting the band-shaped magnetic material when it has been wound for a predetermined length to create a magnetic core. a rotating body that performs constant intermittent motion around a rotating shaft; A movable body having an iron core holding part in the part, and arranged at predetermined angles around the rotating body,
A work of moving the magnetic iron core wound around the mandrel to the core holding part of the movable body, a work of compressing the magnetic iron cores and fixing them to each other, and a work of compressing and fixing the magnetic iron cores to the core holding part of the movable body. The invention is characterized in that the magnetic iron core is discharged from the core holding portion of the movable body after the laminated magnetic cores are fixed to each other by performing the operation at each predetermined angle a plurality of times. Manufacturing equipment for stator cores. 2. The stator core manufacturing apparatus according to claim 1, wherein a plurality of movable bodies are provided at least outside the rotary body along the outer periphery of the rotary body. 3. The fixation according to claim 2, wherein the movable bodies are respectively provided on a center line centered on the rotation axis, and the movable bodies facing each other are configured to integrally move in the radial direction. Manufacturing equipment for child cores. 4. The stator core manufacturing apparatus according to claim 3, wherein the movable body is configured to pass through the rotating body. 5. The stator core manufacturing apparatus according to claim 4, wherein the movable bodies are configured to be orthogonal to each other. 6. The working means includes a first working means for compressing and fixing the magnetic cores attached to the movable body, and a second working means for ejecting the compressed and fixed magnetic cores from the movable body. Claim 3 characterized in that the actions are simultaneously performed by the radial movement of the movable body.
The stator core manufacturing apparatus described in 2.