JPH02221037A - Posture adjusting device of magnet for separating plate material - Google Patents

Abstract

PURPOSE:To perform a sure centering work by connecting the magnet of a separating device to the pressing member of a centering device, and synchronizingly rotationally moving the magnet by the same angle at followingly rotational movement of the pressing member to a plate member. CONSTITUTION:By driving a cylinder device 47 forming a centering device 40, a pressing member 45 presses plate material W to act for centering. At this time, as the pressing member 45 is rotatably supported with a base 41 through a pin shaft 46 to be able to follower its posture to the shape of the plate material W, centering is rapidly and high efficiently performed. At the same time, a magnet 34 for separating the plate material W of a separating device 30 is rotationally moved centering around the pin shaft 36 of a movable body 31, by a rotationally moved angle of the pressing member 45, through a synchronized rotationally moving means 70. Consequently, at completion of the centering motion, the posture of the magnet 34 is automatically adjusted corresponding to the posture of the plate material W. Thus, the plate material can be separated and fed accurately, safely, and rapidly.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an attitude adjustment device for a magnet for separating plate materials. Particularly, during the centering operation, the attitude of the magnet can be automatically adjusted to an attitude that immediately corresponds to the shape of the supplied plate material.

[Prior Art] A large number of stacked plates are pushed up into a separating device using, for example, a lower lid, and the uppermost plate separated by the magnetic force of a magnet in the separating device is moved to a descending vacuum cup. 2. Description of the Related Art A supply device for supplying a plate material to another location using a suction means is widely used.

In order to operate such a supply device smoothly, safely, and with high efficiency, it is important to accurately set the relative position of the magnet and the plate material, that is, the gap between the two.

BACKGROUND ART Conventionally, a sheet material supply device used as a blank supply device for a press machine, for example, generally has a structure as disclosed in Japanese Utility Model Application Publication No. 566,531.

That is, the plate materials are stored in a pallet 12, and the pallet 12 is formed to be accurately positioned below the suction means 2, and above the magnet 4, the magnet 4 is exchanged and set according to the type of the plate material. . Furthermore, a conveying means consisting of a frame 6, wheels 7, etc. is provided to facilitate exchanging and setting the magnet 4.

However, with this configuration, excessive labor is required to accurately set the plates on the pallet 12, to handle the conveyance means, etc., and the conveyance/positioning device for the pallet 12 is large and costly. As a result, a large number of magnet footers 4, exceeding 50 types, must be kept in stock, resulting in high costs. In addition, since the rack building must be prepared in advance, there are great disadvantages in terms of space and economy.

Therefore, the present applicant formed the magnet to be movable within a predetermined stroke, and at the same time, before pushing it up between the magnets 18, the applicant decided to make the magnet movable within a predetermined stroke. A feeding device is proposed which is equipped with a so-called centering device for adjustment.

According to this, the position of the adaptable plate relative to the separating device can be adjusted in advance by means of the centering device, so that it can then be set accurately by simply moving the magnet by a small stroke. Therefore, there is no need to keep a huge stock of magnets, all of the above-mentioned drawbacks can be solved, and it is advantageous in terms of economy and handling.

Furthermore, when the plate material is irregularly shaped, it is troublesome to adjust the attitude of the magnet, so for example, as disclosed in Japanese Patent Laid-Open No. 55-74932, the magnet is formed so as to be swingable, so that the plate material that has been pushed up can be attached more easily. Some devices are configured to press a magnet, adjust the posture by swinging, manually lock the magnet, and then manually move the magnet back by the gap.

[Problems to be Solved by the Invention] However, in today's world where there is a strong demand for higher precision, higher speed, and further diversification, the following problems have been pointed out in actual operation.

That is, the gap between the magnet and the plate material at the time of setting is several mm. On the other hand, if the distance between the magnet positions between the timing and setting is increased, the moving time will be lost, which is against the goal of increasing speed.

Moreover, equipment economy and power consumption i#J are disadvantageous. Therefore, the reality is that the magnet is placed in a position very close to the position when it is set.

In addition, from the viewpoint of the control system, etc., there is a request for further speeding up and automation by setting the magnet while the centering device is operating or before the centering device is operating.

Due to many reasons, such as a discrepancy in the operation timing between the magnet and the centering device, the adjustment accuracy of the centering device, and the accuracy of the magnet's set position, when the plate material is pushed up from the centering device side to the magnet side, the plate material may not be attracted to the magnet. There is now a risk that the magnets will collide with the magnets and damage expensive equipment such as magnets.

Furthermore, in the conventional structure, the pressing member forming the centering device was fixed to the rod of the cylinder device, for example, based on the idea that the attitude of the magnet should just correspond to the shape of the plate material. For this reason, if the shape of the plate is complicated, the centering efficiency will be poor, and the posture of the plate after centering will be very rough with respect to the magnet. Therefore, it is not possible to completely prevent the situation in which when the plate material is pushed up after centering, it still collides with the magnet.Furthermore, the attitude of the magnet must be adjusted again after the centering operation, which not only impedes speed increase. , this posture 1! Since IN must be performed every time the shape of the plate material changes, it cannot meet the diversification demands of high-variety, low-volume production.Furthermore, it is not possible to automate the series of processes such as centering and magnetic separation.

Here, the object of the present invention is to perform the centering operation in response to the shape of the plate material, automatically adjust the attitude of the magnet during the centering operation, wipe out the subsequent setting work, and avoid collision between the magnet and the plate material. An object of the present invention is to provide a posture adjustment device for a plate separation magnet that can achieve reliable magnetic separation at high speed.

[Means for Solving the Problems] The present invention enables the pressing member of the centering device to also be formed to be capable of oscillating movement, thereby achieving a highly efficient and quick centering operation that immediately responds to the shape of the plate material. The position of the magnet, which is formed to be able to swing during centering movement, is configured to automatically follow the position of the pressing member.

In other words, there is a separation device that includes a magnet that is rotatably supported so that its attitude with respect to the plate can be adjusted, and that separates the topmost plate among the stacked plates by the magnetic force of the magnet, and a separation device that can follow the posture of the plate. A centering device that includes a rotationally supported pressing member and a cylinder device that moves the pressing member back and forth toward the plate, and presses the pressing member against the side edge of the plate to adjust the position of the plate before it is delivered to the separating device. The present invention is configured to include a device, and a synchronized rotation means that connects the magnet and the pressing member and rotates the magnet by the same angle when the pressing member rotates following the shape of the plate material.

[Operation] In the present invention having the above configuration, the centering operation is performed by driving the cylinder device forming the centering device and pressing the plate material with the pressing member.

At this time, since the pressing member is rotatably supported to follow the posture of the plate material, quick and highly efficient centering can be performed.

At the same time, the plate separation magnet is rotated by the rotation angle of the pressing member by the synchronized rotation means. In other words, the magnet performs an oscillating movement in synchronization with and by the same amount as the oscillating movement of the pressing member.

Therefore, once the centering operation is completed, the attitude of the magnet can be automatically adjusted to an attitude that immediately corresponds to the shape of the plate.

[Example] Hereinafter, an example of the present invention will be described in detail with reference to the drawings.

This plate material magnetic separation and supply device is as shown in FIGS. 1 to 4, with a separation device 30. It is composed of a centering device 40 and a synchronized rotation means 70, and during the centering operation of a plurality of stacked plates W, the attitude of a magnet for separating the plates is automatically adjusted, and the uppermost one is separated and supplied by magnetic force action. It is formed like this. In this embodiment, it is used as a so-called day stack feed device that feeds blanks (plate materials) one by one to a press machine.

Further, in order to further enhance the function and usefulness of the present supply device, reciprocating means 20. Connecting means 50° Locking means 8
0. Control means 100 are provided. Additionally, a safety device 90 is installed to ensure complete protection.

First, the entire magnetic force separation and supply device will be explained.

The separating device 30 is a means for separating the uppermost plate material W among the stacked planks by the magnetic force of the magnet 34, and the centering device 40 prepares in advance the attitude of the plate material W to be pushed up to the separating device f30. It is a means.

In addition, in order to perform the centering operation with high efficiency and to bring the separation device 30 into an optimal posture, it is desirable to immediately respond to the shape, size, etc. of the plate material W.

For this reason, in the invention, a synchronized rotation means 70 is provided. The synchronized rotation means 70 is based on the premise that the pressing member 45 of the centering device 40 is swingable (details will be described later) so as to follow the shape of the plate material, and the magnet 34 is swingable (details will be described later). When the pressing member 45 swings during the centering operation, it has the role of rotating the magnet 34 by that rotation angle. The purpose is to adjust the posture in advance according to the posture of the person. Thereby, even if the plate material W has a compound pyramid shape, it will not collide with the magnet 34, and the optimum gap can be established regardless of the shape of the plate material W.

In this way, the automatically adjusted attitude (rotation angle) of the magnet 34 is fixed by the locking means 80.

Therefore, as shown in FIG. 1, the plurality of plates W pushed up by the lifter 11 (holding member 12, cylinder rod 13) serving as a delivery means is pushed up to the separation device 30 after its posture is adjusted by the centering device 40. . One plate material W separated by magnetic force is pulled up by an adsorption means 15 (vacuum cup 16, etc.) serving as an underwriting means, and is supplied to an intermediate conveyance means/press machine (not shown). That is, the plate material W passes through the plate material passage space C extending vertically and is delivered to the suction means 15 above.

Further, the reciprocating means 20 causes the separating device 30 and the centering device 40 to reciprocate synchronously with respect to the plate material W. In other words, by moving both devices 30 and 40 in conjunction, the magnet 34 of the separating device 30
When the centering device 40 is set at a predetermined position, the centering device 40 automatically enters the standby position. For this purpose, the centering device 40 is mounted on the carriage 21 of the reciprocating means 20, and the separating device 30 is integrally connected to this centering device 40 via a connecting means 50.

The relative position of both bags 230, 40 and the stroke L of the cylinder assembly 240 forming the centering device 40 are such that when the pressing member 45 reaches its forward limit (leftward in FIG. 1), the magnet 34 than the dimension Δ shown in Figure 1.
It is selected to protrude only toward the plate material W side (inside).

Therefore, when the trolley 21 is advanced and the magnet 34 is set at a predetermined position, the centering device 40
automatically becomes the standby position.

Here, when the centering device 40 is operated, the postures of the plurality of plates W held by the lifter 11 are adjusted. At the same time, the magnet 3 is rotated by the synchronized rotation means 7o.
4 is automatically set. When the centering is completed, the pressing member 45 reaches its forward limit and protrudes from the magnet 34 by a distance Δ. Therefore, the dimension Δ is the magnet 34 and the plate material W.
If it is determined to be equal to the fi suitable clearance between the magnets 1 to 34, the adjustment work to establish the clearance between the magnets 1 to 34 becomes unnecessary. Of course, it is understood that it is possible to avoid collision of the plate material W with the lower end of the magnet 34 when the lifter 11 is further raised to push the plate material W up to the separating device 30 (specifically, the holding claw 35) after adjusting the posture. Ru.

The control means 100 includes the reciprocating means 20 (truck 21) 1 centering device 40 (cylinder device! 47) as described above.
, is means for driving and controlling the locking means 80 (brake disc 81) by a set value etc. in a predetermined procedure. Therefore, if the type of plate material W is selected and set in advance, the above means etc.
(21), 40 (47), and 80 (81) are automatically driven and controlled at the right time and by the right amount, and as a result, the magnet 34 can be set fully automatically.

Note that 60 in FIG. 1 is the interval iI! It is an IN means,
This is means for changing the length of the connecting means 50 made of a piston rod, and in this embodiment is formed from a variable stroke type cylinder device. As a result, the stroke L can be made variable in length and the adaptability to large plate materials W etc. can be expanded. Also,
This interval adjustment means 60 is also controlled by the control means 100 in response to the plate material W in question.

Below, each component will be separated.

The reciprocating means 20 includes a trolley 21.1N, as shown in FIG. Wheel 22. Screw shaft 23. Nut member 24. Gear mechanism 25. The rotation of the motor 26 causes the threaded shaft 23. The truck 21 is configured to move back and forth in the left and right direction in FIG. 1 by the cooperation of the nut member 24.

The trolley 21 has one car for each fixed frame body 1! Supported via +21. Specifically, it is supported by a rail 2 that is integrated with a fixed frame 1, which is conveniently indicated by a two-dot chain line on the left wheel 21 in FIG.

Therefore, if the truck 21 is moved back and forth, the centering device 40 attached to the truck 21 and the connecting means 5
0, it is possible to reciprocate in synchronization with the integral separation device 30.

The separation device 30, as shown in FIGS. 1, 2, and 4,
Magnet 34. Movable body 31. It is composed of rods 32, 32, etc. The movable body 31 includes a rod 32, which is slidably fitted into a bush 33, 33 that is integral with the fixed frame 1.
32, and this movable body 31 has a pin shaft 36.
A magnet 34 is rotatably supported via the .

Therefore, the magnet 34 can be swung relative to the movable body 31 around the pin shaft 36.

In addition, the magnet 34 is attached to a pin shaft 36 so as to be movable in the vertical direction in case of collision of the plate material W from below. The normal position is regulated by a spring 84.

Further, a guide 34a is provided on the upper part of the magnet 34, and a hold claw 35 is provided on the support shaft 35 in the lower space.
A is rotatably provided.

This holding claw 35 is normally biased by a spring 35c and its position is regulated by a stopper 35b.

Therefore, the plate materials W from below are pushed upward by rotating the hold claws 35 clockwise, and the plurality of plate materials W that have been pushed up are held at the separated position by the returned hold claws 35.

Further, a synchronized rotation means 70 is provided on the lower end side of the magnet 34.
A flat portion 71 is provided to form a rotation angle around the pin shaft 36 by an angle adjusting means 88, which will be described later.

Next, as shown in FIGS. 1 and 3, the centering device 40 includes a base body 41 fixed to the tips of slidable rods 42 and 42 on a bush 43 integrated with the truck 21, and a pin shaft 46 fixed to the base body 41, which is fixed to the tip of a slidable rod 42. It is composed of a pressing member 45 rotatably protected via a cylinder, a cylinder device 47 for moving the pressing member 45 back and forth, and the like.

When the pressing member 45 is pressed against the side end of the plate material W, it is swung around the pin shaft 46 and its posture is adjusted to follow the shape of the plate material W. When separated from the plate material W, the pair of springs 44, 44 automatically returns to the neutral state shown in FIG. 3.

Therefore, the pressing member 45 is moved to the backward limit (the state B shown in FIG. 1).
), by moving the cart 21 forward and then moving the pressing member 45 forward using the cylinder device 47, the centering, that is, the posture of the plurality of plate materials W held by the lifter 11 can be adjusted. After adjustment, the pushed-up plate material W does not collide with the magnet 34 because it protrudes beyond the magnet 34 by the dimension Δ.

Here, the pressing member 45 during this centering operation
A synchronized rotation means 70 is used as a means for automatically adjusting the attitude of the magnet 34 in advance so as to rotate the magnet 34 by a rotation angle of , so as to immediately respond to the center-linked plate W.
is provided.

This synchronized rotation means 70, as shown in FIGS. 1 to 3,
It is composed of a pair of rollers 73, 73 rotatably supported by the protrusion 41a of the pressing member 45, and the flat portion 71 integral with the magnet 34. If the pressing member 45 rotates following the shape of the plate material W to be pressed, both rollers 73.7
3 presses against the flat part 71, and the magnet 34 is pressed against the pin shaft 36.
It can be rotated by the same angle around .

In this embodiment, the attitude of the automatically adjusted machining/ytoko 4 is maintained by operating the locking means 80 associated with the angle adjusting means 88 described later.

Specifically, when the pressing member 45 moves forward, the locking means 80 is released so that the magnet 34 can be rotated, and when the pressing member 45 moves backward, the locking means 80 is operated. This is controlled by control means 100.

That is, each time the pressing member 45 is pressed against the plate material W, the locking means 80 is set free so that the magnet 34 always follows the change in its posture.
focused on the fact that the angle adjustment means 88 has a certain frictional resistance, that is, the magnet 34 does not freely rotate significantly even if the locking means 80 is released,
When the pressing member 45 moves backward, the locking means 80 is operated to maintain the previous posture, and when moving forward, the locking means 80 is released, so that the posture that is gradually changed and adjusted can be reliably maintained.

Further, as shown in FIGS. 1, 2, and 4, the angle adjustment means 88 includes a gear 83b fitted to the bottle shaft 36, a gear 83a integrated with the spline shaft 85, and a gear 83a fitted to the spline shaft 85. It consists of a gear 82a shown in FIG. 2 that meshes with the gear 82a, a shaft shown in FIG. 4, a gear 86, a handle 87, and the like. Can be adjusted.

Here, the locking means 80 is formed from a brake disc 81 etc. shown in FIG. 4. multiple magnets 34
This is for the convenience of locking all at once.

The magnets 34 interlocked with the centering device 40 in this embodiment are a pair of left and right as shown in FIG. 4, and a large number of magnets 34, 34. ...is provided.

Further, between each magnet 34, a plurality of hold claws 37, 37°, . . . similar to the above-mentioned hold claws 35 are provided. This is to stably hold the plate material W. That is,
In addition to left and right magnets 34.34, the separation device 30 includes a plurality of magnets 34.34. ..., hold claw 37.37. It is composed of...etc.

Therefore, the plate passage space C is slightly larger than the shape of the largest plate surrounded on all sides as shown in FIG. In other words, the plate material passage space C is not very large compared to the plate material W passing through, and is intended for downsizing the equipment and increasing the efficiency of magnetic force action.

Next, the safety device 90 is a means for preventing the following inconvenience. That is, in view of this type of equipment, there is a possibility that the plate material W, which has been suctioned upward, may fall due to a failure of the suction means 15 shown in FIG. Then, it gets caught on each magnet 34 and its guide 34a. This is because the falling plate material W is in a free state and therefore often does not have the same attitude as when it rises.

Further, if the lifter 11 continues to rise due to a failure, the supported plate material W passes over the magnet 34 and the suction means 15
collide with Furthermore, if the plate material W collides with the plate material W due to insufficient centering and the magnet 34 rises against the spring 84, problems such as blocking of the conveyance path etc. occur, resulting in damage to the equipment.

For this reason, the safety device 90 is configured not to detect each of these types of failures individually, but to detect them all at once. That is, in this embodiment, two sets of light emitters 91
, a photoelectric converter 92, and an abnormality detection means 93 shown in FIG.

As shown in FIG. 4, the detection light emitted from the light emitter 91 is arranged horizontally across the plate passage space C, and the photoelectric converter 92 is arranged at a position where it can receive the detection light.

In particular, in this embodiment, the path of the detection light is selected so that the light is not blocked by the glue lid 11 as a transfer means or the adsorption means 15 as a receiving means which temporarily enters and exits the board passage space C.

Here, the abnormality detection means 93 is configured to output an abnormality detection signal when the electrical signal from the photoelectric converter 92 is not output for a set time. In a normal state, the plate material W passes through the space C at a constant speed. On the other hand, it is noted that if each means 11.15 fails or the plate material W falls, the plate material W will stagnate above the magnet 34 as a result, and the detection light will not be blocked within the set time in the normal state. This is a clever configuration that detects an abnormality when the detection light is interrupted for a time exceeding a set time.

The abnormality detection signal output from the abnormality detection means 93 is input to the emergency stop system and used for ensuring safety. Specifically, it functions as shown in FIG.

Next, the control means 100 is a means for driving and controlling each component by an appropriate amount at a proper time based on a predetermined procedure, and has a configuration shown in FIG. 5.

That is, R0M10 stores a program for a predetermined procedure.
2. A RAM 103 for storing data, a keyboard 104 for inputting the type of plate material W, etc. Input boat 105. It is formed from an output boat 106 and the like.

In the ROM 102, as shown in FIG.
Cylinder device 47. A program for driving and controlling the brake disc 81 according to a predetermined procedure, steps 18, 20, .
A program for determining whether the centering operation is correct or not shown in 22.24 is stored. This program moves the cylinder device 47 back and forth a predetermined number of times using the proximity switches 42a and 42b shown in FIG. 3 and the centering position detection means 49 shown in FIG. If the cylinder device 47 does not reach its forward limit even when the cylinder device 47 reaches its forward limit, it is automatically detected that the plate material W supported on the lifter 11 is too large, that is, an unexpected plate material W has been supplied, or the type setting of the plate material W is incorrect. Detect and
This is to notify the operator. The notification is displayed on a buzzer (not shown) or on CR'r'.

Specifically, as shown in FIG. 7, if the forward limit cannot be confirmed even after the set time 'rs has elapsed, an abnormality is detected.

On the contrary, when a small plate material W is supplied, the forward limit is detected within the set time Ts, but in this case, even if the lifter 11 is raised, the plate material W collides with the magnet 34. There is no problem since this does not happen.6 However, it is also possible to notify in this case.

The proximity switch 42a detects the forward limit, and the proximity switch 42b detects the backward limit.

Thus, as shown in FIG. 5, the control means 100 is connected to the drive motor 26. Cylinder device 47. A brake disc 81 is connected. Note that the output boat 106 is equipped with a spacing adjusting means 60 so that the spacing between the separating device 30 and the centering device 40 can be automatically adjusted to expand the applicability of the type (size) of the plate material W.
is also connected. Further, the ROM 102 stores a program for operating the interval adjustment means 60 based on the selected type.

The cylinder device 47 is designed so that when the interval adjusting means 60 is operated, the movable stroke L of the cylinder device 47 is also adjusted.

On the other hand, the input port 105 includes a truck position detecting means 28 for detecting the amount of reciprocating movement of the truck 21 in response to an ON-OFF signal from the slit disk 29, a position detecting means 38 for the machinets 1 to 34, and the centering The position detection means 49 and the abnormality detection means 93 are connected.

The proximity switch 39a connected to the magnet position detection means 38 detects its forward limit, 39c detects its backward limit, and 39b is a centering device; σ4.
0 operation is used to detect whether or not the synchronized rotation means 70 has operated normally. Each proximity switch 39
a, 39b, and 39c are arranged corresponding to the rod 32.

Next, the effect will be explained.

First, the type of plate material W is set on the keyboard 104.

Then, if the control means 100 determines that the plate material type has been set (YES) in step 10 of FIG. The stroke L is switched to one suitable for the plate material W (step 12).
).

Subsequently, in step 14, the control means 100 controls the motor 2.
6 to move the cart 21 forward so as to secure an appropriate gap (Δ) for the plate material W. This is confirmed by the signal of the magnet position detection means 38 (step 16
).

In this case, the separating device 30 and the centering device 40 are
Since they are integrally connected by the connecting means 50, the trolley 21
The centering device 40 attached to the magnet 34 is naturally moving forward together with the magnet 34.

Here, when the plurality of plates W supported by the lifter 11 are pushed up to the centering position and stopped, the control means 1
00, in step 18, the cylinder device 47 is repeatedly moved forward and backward several times to perform a centering operation. In this case, as shown in FIG. 4, a pair of left and right cylinder devices are operated simultaneously.

When it is determined (YES) that the centering operation time T has been performed for the set time Ts (step 20), it is determined whether the centering position is a predetermined one based on the signal from the centering position detection means 49 (step 22)
, in the case of no (No), an abnormality is announced in step 24.

During this centering operation, the pressing member 45 follows the shape of the plate material W and rotates about the pin shaft 46. Then, by the action of the synchronized rotation means 70, the magnet 34 is rotated about the pin shaft 36 by the same angle. In this case, when the cylinder device 47 moves forward, the locking means 80, ie, the brake disc 81, is released, and when it moves backward, it is locked. Therefore, along with the centering operation, the magnet 34 automatically adjusts to a posture corresponding to the shape of the plate material.
rJ is adjusted.

Thus, when the centering operation is completed, magnet 3
4 has been adjusted in attitude and the pressing member 45 is projected beyond the magnet 34 by the dimension Δ, so even if the lifter 11 is further raised thereafter, the plate material W will not collide with the magnet 34.

The plurality of lifted plate materials W are pushed up to the separation position while rotating each holding claw 35 (37) clockwise in FIG. 1, and are held by the holding claws 35 (37). As a result, the lifter 11 descends.

Here, the uppermost one of the plurality of plates W is separated by the magnetic force of the magnet 34.

The left and right magnets 34, 34 are oriented in a manner that matches the shape of the plate material, and are automatically adjusted to ensure a predetermined gap (△), so that the separating action is performed with high efficiency and reliably.

Then, the suction means 15 descends, suctions the separated plate material W, and supplies it to an intermediate conveying means (not shown) and a press machine.

In this way, the plate material W is moved inside the plate material passage space C by the suction means 1.
5 to pass at a predetermined speed.

Therefore, as shown in FIG. 7, the safety device 90 confirms the temporary detection light interruption in step 30, but as long as the interruption time T or the set time 'rs is not exceeded, it is determined to be normal and the process proceeds from step 32 to step 30. Return to

However, if the plate material W falls from the suction means 15 and the tip cover 11 continues to rise due to a failure, or if the suction means 15 descends or stops mid-way up, the plate material W will be detected. This will block the light, so step 3
4, the abnormality detection means 93 generates an abnormality signal. The control means 100 performs an emergency stop to ensure safety.

According to this embodiment, the synchronous rotation means connects the magnet 34 and the pressing member 45 and rotates the magnet 34 by the same angle when the pressing member 45 rotates following the shape of the plate material. 70 is provided, so the plate material W
It can be applied to various shapes and can satisfy diversification requirements. Moreover, since the locking means 80 holds the attitude of the magnet 34 more reliably, the adjustment of the attitude of the magnet can be automated, and the time and labor of adjustment work can be eliminated.

Further, the dividing device 30 and the centering device 40 are mounted on the trolley 21 so as to be able to move back and forth synchronously, and the pressing member 4
5, the pressing member 45 is arranged so as to protrude further toward the plate material W than the magnet 34.
Coupled with the automatic attitude adjustment of the magnet 34, it is possible to avoid the plate material W colliding with the magnet 34 under any conditions, and the plate material W can be magnetically separated and supplied safely and smoothly with high efficiency. Therefore, it is possible to supply various types of plate materials W and to speed up press working and the like.

Also, in order to set the magnet 34 in a predetermined position, the trolley 2
1, the centering device 40 can be moved synchronously and stopped at the standby position. This also increases speed, and the stroke of the cylinder device 47 does not have to be excessive, which is economical.

Furthermore, when the centering operation is completed, the pressing member 45
protrudes from the magnets 3 and 4 by the dimension △, so the dimension △ is the required 1lL3i1i of the magnet 34 and the plate material W.
If a gap is selected, gap adjustment of the magnet 34 becomes unnecessary, and from this point of view as well, high speed and highly efficient magnetic separation can be promoted.

[Effects of the Invention] As is clear from the above description, the present invention is capable of separating plate materials when the magnet of the separating device and the pressing member of the centering device are connected and the pressing member rotates following the shape of the sheet material. Since the configuration is equipped with a synchronized rotation means that rotates the magnets by the same angle, reliable centering can be performed no matter what type of plate material is fed in any orientation, and the magnets The posture of the plate can be automatically adjusted, eliminating the conventional setting work and eliminating the need for the plate to collide with the magnet when it is pushed up into the separation device, allowing for accurate and precise work.
Can be separated and supplied safely and quickly. Thereby, it is possible to reduce the cost of press working, etc. and increase its speed.

[Brief explanation of the drawing]

Fig. 1 is a side cross-sectional view of main parts showing one embodiment of the present invention;
3 is a plan view of a part of the main part of the centering device, FIG. 4 is a plan view of the overall configuration, and FIG. 6 is a block diagram mainly showing the configuration of the control means, FIG. 6 is a flowchart for explaining the operation, and FIG. 7 is a flowchart for explaining the operation of the safety device. DESCRIPTION OF SYMBOLS 1... Fixed frame body, 11... Lifter (delivery means), 15... Adsorption means (undertaking means), 20... Reciprocating means, 21... Dolly, 26... Motor, 30 ... Separation device, 34... Magnet, 40... Centering device, 45... Pressing member, 47... Cylinder device, 0... Connection means, 0... Interval adjustment means, 0. ...Synchronized rotation means, 1...Plane part, 2...Roller, 0...Lock means, ■...Brake disc.

Claims (1)

[Claims] (1) A separation device that includes a magnet that is rotatably supported so that its attitude relative to the plate can be adjusted, and that separates the topmost plate among the stacked plates by the magnetic action of the magnet, and a separating device that rotates so that its attitude can follow the shape of the plate. A centering device that includes a supported pressing member and a cylinder device that moves the pressing member back and forth toward the plate, and that presses the pressing member against the side edge of the plate to adjust the position of the plate before being delivered to the separating device. and synchronous rotation means that connects the magnet and the pressing member and rotates the magnet by the same angle when the pressing member rotates following the shape of the sheet material. Posture adjustment device.