JP2528405B2 - Abnormality detection device for the inner peripheral edge of the air-core coil - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for detecting an abnormality such as a protrusion of an inner peripheral end toward the center side due to winding disorder of an air-core coil.

[0002]

2. Description of the Related Art Conventionally, in a steel sheet coil formed by winding a steel sheet strip or the like, or a wire rod coil formed by winding a wire rod, an end portion of a winding start from the inner peripheral surface of the coil toward the center side. May pop out significantly. When there is such an abnormality, the fork member and the winding start end interfere with each other, which may cause coil disorder. In order to prevent this problem, for example, an operator may visually check the coil. However, in a three-dimensional automated warehouse or the like in which coils are stored on multiple shelves, it is complicated for the operator to check the coils placed on each shelf one by one. It is desirable to be able to detect abnormalities on the inner peripheral surface.

[0003]

SUMMARY OF THE INVENTION The present invention has been devised in order to solve the above-mentioned problems of the prior art, and its main purpose is to reduce the winding start of the inner peripheral end of the air-core coil. An object of the present invention is to provide an abnormality detecting device for the inner peripheral surface of an air-core coil, which is capable of automatically detecting an abnormality.

[0004]

According to the present invention, such an object is to provide a fork member to be inserted in order to catch the coil in the hole of an air-core coil formed by winding a steel plate or wire. The fork member is provided at the tip of the fork member so as to be movable in and out of the extension surface of the coil supporting surface of the fork member and to have a contour of an outer diameter smaller than the inner diameter of the hole in the protruding state. Expansion and contraction member,
It is achieved by providing an abnormality detecting device for an inner peripheral end of an air-core coil, comprising: a displacement detecting means for detecting a displacement of the expansion / contraction member in a direction opposite to a direction in which the fork member is inserted. It

[0005]

According to such a structure, when the insertion member is inserted into the hole of the air-core coil, the inner peripheral end, which is the winding start of the coil, largely protrudes toward the center side due to winding disorder or the like. Since the backing plate collides with the inner peripheral end portion and the backing plate is pushed back, the abnormality of the inner peripheral end can be automatically detected by detecting the displacement. Also,
Coil transfer by providing the above-mentioned contact plate etc. on the fork provided in the crane for transferring the air-core coil, and configuring the contact plate by a movable plate that can be displaced so as to retractable with respect to the coil support surface of the fork The above detection operation can be performed simultaneously with the work.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The structure of the present invention will be described in detail below with reference to specific embodiments shown in the accompanying drawings. FIG. 1 shows a schematic configuration of a three-dimensional automated warehouse to which the present invention is applied. This three-dimensional automated warehouse is for storing the coil 1 formed by winding a steel strip or wire, and it automatically moves toward a designated shelf row and a storage shelf 2 consisting of multiple rows and multiple stages. It is composed of a stacker crane 3 that runs, a fork lifting device 4 that automatically moves up and down toward a designated shelf, and a fork 5 for catching and transporting the coil 1.

The storage shelf 2 is divided into rows and columns in a grid pattern, and a pedestal 6 for mounting the coils 1 is provided in each storage section. For example, various coils may be randomly placed on these pedestals 6, but in the embodiment, the coils 1 having the same diameter are placed.

As shown in FIG. 2, the coil supporting fork 5 serves as an insertion member and has a hole 1a at the center of the coil 1.
Which can be inserted into the hole 1a of the coil 1 on the pedestal 6 while being suspended by the fork lifting device 4 which is vertically driven by the lifting drive device 7. As shown in FIG.
As indicated by the arrow A, it is reciprocally driven along the axial direction of the hole 1a. The coil 1 can be loaded / unloaded to / from the gantry 6 by the apparatus configured as described above. A pulse transmitter 9 such as a rotary encoder is attached to the lifting drive unit to constantly measure the moving distance of the fork lifting unit 4 in the height direction to detect the lifting position of the fork 5. .

At the tip of the fork 5, as shown in FIG. 3 and FIG. 4, the abnormality detecting device 1 according to the present invention is provided.
1 is provided. As shown in FIG. 4, the abnormality detecting device 11 includes a bracket 12 fixed to the open end of the front end of the fork 5 which is open toward the front end, which is the left side of the drawing.
And a bearing member 14 supported by a pair of slide bearings 13 provided above and below the bracket 12 so as to be capable of reciprocating along the axis of the fork 5 and to be able to rotate on a plane orthogonal to the axis of the fork 5. Rotating shaft 1 by bearing member 14
5a pivotally supporting the disk body 15, four contact plates 21 arranged at equal intervals in the circumferential direction of the outer peripheral portion of the disk body 15, and the inner side of the fork 5 of the bearing member 14 for driving the rotating shaft 15a. And a motor 16 attached to the side.

Further, in the abnormality detecting device 11, a bearing member 14 is provided between the fixed portion of both slide bearings 13 and the bearing member 14 fixed to the movable portion of both slide bearings 13 so that the tip side of the fork 5 is located. A compression coil spring 17 is provided so as to enclose the base end portion of the bearing member 14 so as to energize the compression coil spring 17 in such a manner as to protrude toward the outside. Furthermore, in order to detect displacement of the disk body 15 in a direction opposite to the inserting direction of the fork 5 against the biasing force of the compression coil spring 17, as displacement detecting means,
The disc body 15 has a dog 18 extending toward the bracket 12 side.
And a limit switch 19 is provided at a corresponding position on the bracket 12.

The disk body 15 is provided with four contact plates 21 arranged at equal pitches in the circumferential direction as expansion / contraction members. As shown in FIG. 3, the backing plate 21 has a sickle shape having an L-shaped handle, and the corners of the L-shaped portion are aligned with the axis of the fork 5 at the radial intermediate portion of the disc body 15. Is rotatably supported via a pivot pin 22 along
It is possible to swing between two positions, a fully open state shown by a solid line in FIG. 3 and a fully closed state shown by an imaginary line (only part of which is shown). A long hole 23 extending substantially in the radial direction is provided at the base end portion of the contact plate 21, and is fixed to a radially outward protrusion of the tip end portion of the bearing member 14 and a fixing pin 24 extending along the axis of the fork 5. The holes 23 are engaged with each other. When the disk body 15 is rotationally driven in the direction shown by the arrow B in FIG. 3 by the motor 16 described above, the pivot pin 22 moves together with the disk body 15 in the circumferential direction, so that the two positions around the fixing pin 24 are set. The backing plate 21 swings between them.

It should be noted that the free end of the contact plate 21 is formed in an arc shape over a range of about 90 degrees so that, in the fully opened state, the outer periphery of the four contact plates 21 forms a circle. ing. In the fully opened state, these contact plates 21 are radially outside the extension surface of the upper arcuate support surface 5a of the fork 5 in FIG. 3 that supports the inner peripheral surface of the coil 1 when the coil 1 is conveyed. It is formed in a circular shape having a contour of a small outer diameter projecting toward one side and smaller than the inner diameter of the inner peripheral surface 1a of the coil 1 shown by the imaginary line in FIG. , Is movable inwardly in the radial direction with respect to the extension surface of the support surface 5a.

Next, the operation of the abnormality detecting device 11 will be described. First, if the positions (rows and columns) of storage shelves are designated by a separate input device, the stacker crane 3 is self-propelled and stopped in front of the desired row of shelves, and at the same time, the fork lifting device 4 moves up and down to move to the desired shelves. Stop at the front. At this time, the fork 5 is aligned with the target hole 1a of the coil 1.
The height position may be determined by a value obtained by adding a certain fixed value depending on the coil to be handled to the designed height dimension of the target tray. Then, the disk body 15 is rotated by the motor 16 to fully open the contact plate 21, and then the fork 5 is advanced toward the inside of the hole of the coil 1 of the mount 6.

At this time, for example, if the inner peripheral end, which is the beginning of winding of the coil 1, largely protrudes toward the center for some reason, the outer peripheral portion of the contact plate 21 collides with the protruding portion. Then, the disk body 15 together with the backing plate 21
Is pushed back to the base end side of the fork 5 as shown by the arrow C in FIG.
Can hit the limit switch 19 to automatically detect the abnormality of the inner peripheral edge.

If the protruding amount is within the allowable value, the fork 1 can be completely inserted into the hole 1a of the coil 1 without any damage to the contact plate 21. Then, the motor 16 is rotated in the reverse direction to fully close the contact plate 21, and then the fork 5 is slightly raised to place the inner peripheral surface of the hole 1a of the coil 1 on the support surface 5a of the fork 5. And coil 1
Can be transported.

In the present embodiment, the contact plate 21 is selectively opened and closed by the motor 16, but the spring 16 is always biased so that the contact plate 21 is kept fully open and is supported by the fork 5. Can also be arranged such that the contact plate 21 can be displaced towards the fully closed position against the spring force.

[0017]

As described above, according to the present invention, in the air-core coil, it is possible to automatically detect an abnormality due to the inner peripheral end, which is the winding start, popping out toward, for example, the center side. The workability can be greatly improved and the work cost can be reduced. Further, by making the outer diameter of the contact plate variable, it can be provided on the coil fork, and the abnormality can be efficiently detected during the shipping operation.

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram of a three-dimensional automated warehouse to which the present invention is applied.

FIG. 2 is an enlarged partial view showing a fork portion in a stacker crane used in the three-dimensional automated warehouse of FIG.

FIG. 3 is an enlarged front view showing the abnormality detection device of the present invention with a part thereof cut away.

FIG. 4 is a side sectional view taken along the line IV-IV in FIG.

[Explanation of symbols]

 1 Coil 1a Hole 2 Storage Rack 3 Stacker Crane 4 Fork Lifting Device 5 Fork 5a Support Surface 6 Stand 7 Lifting Drive Device 8 Load Detector 9 Pulse Transmitter 11 Abnormality Detector 12 Bracket 13 Slide Bearing 14 Bearing Member 15 Disk 15a Rotating shaft 16 Motor 17 Compression coil spring 18 Dog 19 Limit switch 21 Contact plate 22 Pivot pin 23 Long hole 24 Fixing pin

Claims (1)

(57) [Claims] 1. A fork member to be inserted into a hole of an air-core coil formed by winding a steel plate, a wire rod, or the like, and a fork member that appears in and out of an extension surface of a coil supporting surface of the fork member. A direction in which the expansion / contraction member provided at the tip of the fork member so as to be movable and having an outer diameter smaller than the inner diameter of the hole in the protruding state and the insertion direction of the fork member are opposite to each other. A displacement detecting means for detecting the displacement of the expansion / contraction member, and an abnormality detecting device for an inner peripheral end of an air-core coil.