JPS5936502B2 - Blank core automatic extraction device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic blank core take-out device for taking out blank cores of a rotating electric machine after being punched by a press, inverting the cores, and stacking the blank cores with the cores aligned with each other.

Traditionally, this type of work was done manually.

First, the structure of the cutting die, the cross section of the blank cores that have been cut out, and the state in which they are stacked are shown in FIGS. 1 to 3.

In Fig. 1, 1 is a blank core material, 2 is a blank core punched by an upper die 3 and a lower die 4 attached to a press (not shown), and 5 is a blank core that passes through the lower die 4 and is inserted into an axle box (not shown). be dropped.

FIG. 2 is a sectional view of the blank core, and due to the structure of the upper die 3 and the lower punch die 4, downward burrs 2a are generated at the inner and outer edges.

FIG. 3 shows a state in which the blank cores 2 that have been removed are stacked on a pallet 6 with the burrs 2a facing upward and the keys 2b on the outer periphery aligned.

Next, to explain the work, the worker manually takes the blank core 2 punched by the upper die 3 and the lower die 4 and
°Flip and stack the keys 2b on the pallet 6 with the burrs 2a facing upward.

It is necessary for the next process to turn the burr 2a upward and to stack the keys 2b in alignment.

However, in such conventional work, the worker puts his or her hand into the press to take out the blank core, so there is a risk that the worker's hand will be accidentally caught in the press, resulting in severe fatigue when working continuously for a long time, and the taking out speed is slow. It had drawbacks such as being slow.

The present invention has been made in order to eliminate the above-mentioned conventional drawbacks, and provides an automatic blank core take-out device that automatically takes out blank cores, inverts them, and aligns and stacks the keys.

An embodiment of the present invention will be described above with reference to the drawings.

In Figure 4 and Figure 5? , 8.9 are an upper roller, 1 drive roller, and 1 drive roller for reliably taking out the blank core 2, respectively.
A roller drive device, 10.11 is a chain, 12 is a reversing plate that reverses the blank core 2 between them, and is equipped with a curved opening 12a for easy insertion and a receiving portion 12b to prevent it from moving laterally during rotation. Drive device 13, grooved belt 14
It rotates by 180° around the shaft 15.

In FIG. 6, 16 is a magnet roller rotated by a chain 11, 19 is a lever engaged with a cylinder 18 whose one end is supported by a frame 17, and 20 is a knock-off lever that has a roller 21 at one end and a roller 21 at the other end. It is engaged with the lever 19 and is swingably supported by the shaft 22.

In FIG. 7, reference numeral 23 denotes a mandrel for stacking, and a taper 23a is provided at the tip so that the blank cores 2 can be easily inserted.

Reference numeral 24 is a guide plate for aligning keys and is fixed to the stocker 6.

27 is a key press plate engaged with the tip of a cylinder 26 whose one end is supported by the base plate 25; 28 is a base plate; 29 is a sprocket wheel; one end is fixed to a drive unit 30 and a support column 25a attached to the base plate 25; The proximity switch 32 is held by a chain 31, and the proximity switch 32 is fixed to the base plate 25. 33 is a wheel, and 34 is a rail provided on the base plate 25.

In FIG. 8, 17a is a hole provided in the frame 17;
b is a shaft provided in the base plate 25 that fits into the hole 17a, is engaged by the bolt 36 of the holding plate 35, and is rotated around the shaft by the steel ball 37 housed in the groove 25c provided in the base plate 25. It can be rotated horizontally, and 38 is a wheel for movement.

As described above, in this invention, the blank core 2 after press punching is reliably taken out by the upper roller 7 and the drive roller 8, sent sequentially by the drive roller 8, sandwiched between the rotating plates 12, and the drive device 13
The roller 16 is rotated 180° and moved further by the drive roller 8. Next, the lower surface of the rotating magnet roller 16 is moved until it reaches a predetermined position, and a limit switch (not shown) activates the cylinder 18 for brushing off. The blank core 2 adsorbed to the lower surface of the magnet roller 16 is rotated by rotating the dropping lever 20 around the shaft 22 by the hole size.
is brushed off downward and the mandrel 23 is laminated as a guide for the inner diameter.

Since the keys 2b of the blank core 2 are in different positions when they are dropped, the cylinder 2 is
The keys 2b are aligned by pressing them with a key press plate 27 attached to the key 2b.

In order to perform this operation at a constant height, the plywood 28 is moved by a drive device 30, by an electric signal from a nearby switch 32.
The chain 31 moves it downward by a certain distance.

Wheels 33 and rails 34 are provided as guides during this descent.

The frame 17 is manually pushed by the steel balls 37 and rotated in the horizontal direction so that the blank core 2 can be easily taken out after lamination.

Further, the entire device can be easily moved by wheels 38 provided on the base plate 25.

In this embodiment, a drive roller and a magnet roller are distinguished, but if all magnet rollers are used, more reliable transportation can be achieved.

Also, the rotating plate was rotated 180°, but the three blades were rotated 120°.
It goes without saying that rotation, rotation of the four blades 90'... and speeding up the transfer pinch of the blank core can be applied.

As described above, according to the present invention, the blank cores after punching are taken out one by one, turned inside out, and the cores are aligned and stacked one on top of the other. Since there is no need to perform any work, there is no danger of putting one's hand inside the press, and the speed of ejecting is increased, resulting in a reduction in punching time.

[Brief explanation of drawings]

Fig. 1 is a sectional view of the blank core being removed, Fig. 2 is a sectional view of the removed blank core, Fig. 3 is a perspective view of the blank cores stacked with their keys aligned, and Fig. 4 is one of the parts of the invention. FIG. 5 is a perspective view of the rotating plate for reversing, FIG. 6 is a side view of the blank core removal device, FIG. 7 is a perspective view of the key aligning unit, and FIG.
The figure is a sectional view of the rotating part of the frame and plywood. In the figure, 2 is a blank core, 7 is an upper roller, 8 is a drive roller, 9 is a roller drive device, 10° 11 is a chain, 12 is a rotating plate, 13 is a drive device, 14 is a grooved belt,
16 is a magnet roller, 17 is a frame, 18 is a cylinder, 19 is a lever, 20 is a blow-off lever 23 is a mandrel, 26 is a cylinder, 27 is a key press plate, 28 is a plywood, 35 is a press plate, 37 is a steel ball , 38 are wheels. Note that the same reference numerals in the figures indicate the same or corresponding parts.

Claims (1)

[Claims] 1 a frame, a pair of upper and lower rollers supported by the frame and extracting a blank core having a key from the blank core material;
A rotating plate that turns over the blank core extracted by the pair of upper and lower rollers, a magnet roller that attracts and transfers the blank core that has been turned over by the rotating plate, a plywood to which the frame is rotatably attached, and a plate provided on the plywood. a transfer means for transferring the blank core transferred by the magnetic roller to the mandrel;
and means for aligning the orientation of the keys of the blank cores transferred to the mandrel with reference to a key alignment guide.