JP3534198B2 - Wire mesh separation feeding device - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is applied to, for example, autoclave-cured lightweight cellular concrete, that is, a pile of lath net supplied from a manufacturer of lath nets used for relatively thin ALC panels among ALC panels. The present invention relates to a device for supplying one sheet to the device and a device for separating and supplying the coated pile lath nets for each stage, that is, a wire netting and separating device.

[0002]

2. Description of the Related Art A steel plate transporting device for transporting steel plates on a stocker one by one from an upper stage is provided, a detector for adsorbing a plurality of sheets is provided near the stocker, and a first electromagnet and a second electromagnet are provided near the detector. Japanese Patent Application Laid-Open No. 62-21647 discloses a steel plate peeling device in which a peeling device for sandwiching and opening the steel plate from above and below is horizontally swung so as to be able to approach and separate.

[0003]

According to the above, when the detection sensor detects two or more steel plates, the separating device moves to the steel plate conveying path. The separation device that has moved to the transfer path is excited to the same polarity by placing the upper and lower electromagnets on the upper and lower sides of the transfer steel plate that is being adsorbed by the adsorption transfer device, and exciting these two electromagnets to create a superposed state in the adsorption device. The sucked lower steel plate is separated downward so as to be separated, and the separated upper steel plate is conveyed while being sucked by the suction conveyance device. Then, a large exciting current is supplied to the lower electromagnet in accordance with the number of sheets, so that a separation exciting force corresponding to the number of superposed sheets can be obtained. Therefore, the conventional separating device always requires two electromagnets, one above the other, that opposes each other. Further, since it separates the steel sheet by repulsion by exciting them with the same polarity, the structure is complicated and the lath net coated with a rust preventive agent is used. Separation does not work well when used. SUMMARY OF THE INVENTION It is an object of the present invention to solve the above-mentioned drawbacks and to obtain a wire netting / separating / supplying device in which suction separation can be reliably performed.

[0004]

The present invention provides the following wire mesh separating / supplying device for achieving the above-mentioned object. That is, a loading unit for placing horizontally stacked metal nets, a means for raising and lowering the loading unit, and a suction separating unit composed of an electromagnet for attracting and separating the metal nets stacked on the loading unit one by one from above, Equipped with a discharge means for discharging the wire net floated by suction separation, and further, a detection means of the presence / absence of separation by the suction separation means and a plurality of sheets thereof, and an optimum suction separation by this detection means. And a peeling means for sucking and peeling the lower wire nets of the plurality of wire nets that have been suction-separated based on the detection signals when the number of sheets is plural. Is arranged on both sides of the suction separating means, and the support arm of the support bracket having a peeling magnet is pivotally supported at the arm cylinder tip of the air cylinder, and the support bracket is attached to the support bracket. An arm that swings around a point is attached, and the lower wire nets of a plurality of wire nets that have been suction-separated are sucked and peeled from below by the peeling magnet provided in the peeling means swinging upward, and swing-down. Is a wire mesh separation and supply device that releases the wire mesh that has been suction-peeled by erasing the excitation, and the suction-separation force adjusting means that changes the suction-separation force is transmitted from the drive motor to the variable transformer by a signal from the detection means. It automatically changes the voltage of the suction electromagnet.

[0005]

When the electromagnet is used as the suction means and the suction separation is performed, the voltage of the electromagnet is adjusted when the detection of the presence or absence of the lath net for the suction separation and the detection means for detecting a single sheet or a plurality of sheets prevents the adsorption of even one sheet. When the suction force is raised to improve the suction force to suck a plurality of sheets, the voltage of the electromagnet can be lowered to reduce the suction force and control can be performed so that one sheet can always be sucked. Further, when lath nets are attached to each other, the lath nets on the lower side are forcibly separated by suction from below, and the lath nets attached to each other are stably separated into one sheet. be able to.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The embodiments shown in the drawings will be described below. In the embodiment, a lath net will be described, but it is also used for other wire nets other than the lath net. The present invention comprises the following devices. A. Lath net loading section B. Suction separation device C. that suction-separates the stacked lath nets one by one from above. Draining means for lath net D. Presence / absence of separation by suction separation means and detection of plural sheets E. Suction separation force adjusting device F. Peeling means The lath net loading section (A) equipped with the lifting means will be described below. In FIG. 1, (1) is a lath net loading plate, which is lifted and lowered by a lifter (2). For example, the loading plate (1) has a length of 1
970 × width 554 × 0.8 mm thick lath net (a) was coated with a rust preventive agent, and then 500 lath net piles (3)
It is configured so that one lath net (a) can be automatically separated and supplied as described later while mounting it on the lifter (2) and raising it. It can also be used before the rust preventive agent is applied to the lath net (a).

Next, the suction separating means (B) comprises means for raising and lowering an arm (4a) having a plurality of electromagnets (5) by means of an electromagnet raising and lowering cylinder (4), which is stacked on the lath net loading section (A). It is designed to be separated from the lath net (a). The illustrated electromagnet lifting cylinder (4) is provided with front and rear two, and the front and rear of the lath net (a) are attracted by a plurality of electromagnets (5).

Next, in the discharging means of the lath net, a plurality of magnet rollers (11) are arranged in the conveying direction of the lath net (a), and at the same time when the electromagnet (5) is moved up and down, the magnet roller (11) is also moved up and down. Then, when one lath net (a) is attracted, the magnet roller (11) rotates in the conveying direction to eject the lath net (a) from the electromagnet (5) that has been excited.

Next, the detecting means (D) is provided with a sensor (6) working on the principle of operation as shown in FIG. 14 attached to a frame (not shown) on the upper part and corresponding to the lath net (a). The sensor (6) has a receiving coil (6b) and a transmitting coil (6c) built in the detection head (6a), receives an alternating magnetic field emitted from the transmitting coil (6c) by the receiving coil (6b), and is guided. When the lath net (a), which is the detector, enters the alternating magnetic field, the magnetic resistance decreases due to the lath net (a), so that two lath nets are used instead of one lath net. Since a higher voltage is generated, this sensor (6) detects that a plurality of lath nets (a) have been lifted by the suction separation means (B).

Next, the suction separation force adjusting means actuates the geared motor (8) according to the signal sent from the sensor (6) as shown in FIG. 16, and the variable transformer (7) via the adjusting knob (20). The voltage of the electromagnet (5) is automatically adjusted by the variable transformer (7). The variable transformer (7) changes the mutual angle between the primary coil and the secondary coil as shown in FIG. The voltage can be changed. The voltage becomes small in (b) and becomes large in (a). Therefore, when performing suction separation, if the presence or absence of lath net and one or more sheets are detected by the sensor (6) and even one sheet cannot be adsorbed, the voltage of the electromagnet (5) is increased to improve the suction force, When a plurality of sheets are attracted, the voltage of the electromagnet (5) is lowered to reduce the attraction force so that one sheet can be always attracted.

Next, the peeling means (F) is a suction separating means (B).
Are located on both sides of. 1, 3, 5, 7, 9, 1
As shown in FIGS. 1 and 13, in the embodiment, the peeling magnet (9) described later is provided for the lath nets on both sides of the arm (4a) having the electromagnet lifting cylinder (4) and the electromagnet (5). The peeling means (F) is arranged at a position where the peeling means is lifted from below. As shown in FIG. 15, the peeling means (F) has a support arm (18) of the peeling magnet (9) pivotally supported on the tip of the arm (19) of the air cylinder (10), and a fulcrum () on the support bracket (15). An arm (16) swinging around 17) is attached, and a spring wound around the support arm (18) between the support bracket (15) of the peeling magnet (9) and the attachment portion (13). (1
The peeling magnet (9) is elastically supported via the support arm (1
It is supported by 8). Therefore, when the arm (19) is actuated by the operation of the air cylinder (10) and the arm (19) projects, the arm (16) swings around the fulcrum (17) as a dotted line, and the support arm (18). Is upward with the fulcrum (12) as the center, the peeling magnet (9) is lifted to a position corresponding to the electromagnet (5), and the peeling magnet (9) attracts the lath net (a) from below the lath net (a). . Air cylinder (1
The arm (19) retreats at 0) and is an extra lath net,
The lower lath nets (a) of the plurality of lath nets suction-separated are separated from the upper lath nets (a), and the extra lath nets are returned to the lath net piles (3) (see FIGS. 10 and 11). ). The above operation is performed by the detection signal from the sensor (6).

From the state shown in FIGS. 2 and 3, the electromagnet lifting cylinder (4) is actuated and the electromagnet (5) descends as shown in FIGS. 4 and 5 to move the lath net (a) to the one shown in FIGS. Lift it up like this. When the sensor (6) detects that a plurality of lath nets (a) have been lifted up, the lower lath net (a) as shown in FIGS. 8 and 9.
The peeling magnet (9) is raised by the air cylinder (10) toward and attracts the lath net (a). In FIG. 10 and FIG. 11, the peeling magnet (9) is lowered by the air cylinder (10) to release the lath net (a) sucked and peeled by releasing the excitation of the peeling magnet (9). Next, the lath net (a) attracted by the electromagnet (5) is discharged as shown in FIG. 12 by driving the magnet roller (11). At that time, the electromagnet (5) is deenergized. According to the apparatus as described above, it is possible to separately supply (a) the lath net adhered after applying the rust preventive agent and the like one by one. Therefore, the suction separation force adjusting means changes the suction separation force in accordance with the number of lath nets, so that optimum suction separation can always be performed. Although the illustrated lifter is of the pantograph type, it may be of the hydraulic cylinder type and may be a lath net (a) lifted by the electromagnet (5) of the suction separating means (B) as a means for assisting the separation of the lath net. The float of the lath net can be assisted by inserting the separating plate of the inserting arm that is horizontally reciprocally driven by the air cylinder from the edge of the lathe to the lower side thereof. In any case, the design can be changed arbitrarily within the spirit of the present invention.

[0013]

According to the prior art, when a pile of lath nets is attracted by a magnet, since the lath nets are attached to each other by painting or the like, the attracting force is changed, and even one sheet cannot be attracted or a plurality of sheets are attracted. Until then, it was difficult to automatically separate and supply. However, in the present invention, an electromagnet is used as the suction means,
When performing suction separation, if even one sheet cannot be adsorbed by the detection means for detecting the presence or absence of lath nets that have been suction-separated and one or more sheets, the suction-separation force adjusting means increases the voltage of the electromagnet to improve the suction force. When a plurality of sheets are sucked, the voltage of the voltage force is reduced to reduce the suction force, and it is possible to stably separate and supply one sheet. Further, when lath nets are attached to each other, the lath nets on the lower side are forcibly separated by suction from below, and the lath nets attached to each other are stably separated into one sheet. be able to.

[Brief description of drawings]

FIG. 1 is an overall view of the device of the present invention

FIG. 2 is a state diagram before the electromagnet attracts the lath net.

[Fig. 3] Same as above, side view

FIG. 4 is a diagram showing a state in which an electromagnet attracts a lath net.

[FIG. 5] Same as above, side view

FIG. 6 is a state diagram in which a lath net is lifted by an electromagnet.

[Fig. 7] Side view of the above

FIG. 8 is a state diagram when the suction separating means is activated.

FIG. 9 is a side view of the same as above.

FIG. 10 is a state diagram in which the lower lath net is released.

FIG. 11 is a side view of the same as above.

FIG. 12 is a diagram showing the operation state of the discharging means.

FIG. 13 is a side view of the same as above.

FIG. 14 is an explanatory diagram showing the operating principle of the sensor.

FIG. 15 is an explanatory view of a peeling unit.

FIG. 16 is an explanatory diagram of suction separation force adjusting means.

FIG. 17 is a diagram showing a relationship between a primary coil and a secondary coil.

[Explanation of symbols] 1 Lath net loading plate 2 lifters 3 Las Amiyama 4 Electromagnet lifting cylinder 5 electromagnet 6 sensors 6a detection head 6b receiver coil 6c transmitter coil a lath net 7 variable transformer 8 geared motor 9 Peeling magnet 10 air cylinder 11 Magnet roller

─────────────────────────────────────────────────── ─── Continuation of the front page (58) Fields surveyed (Int.Cl. ⁷ , DB name) B65G 57/00-59/12 B66C 1/08 B65H 1/00-3/68

Claims (2)

(57) [Claims] 1. A loading unit on which horizontally stacked metal nets are placed, a means for moving the loading unit up and down, and an electromagnetic device for sucking and separating the metal nets stacked on the loading unit one by one from above.
A suction separating unit consisting of stone, a discharge means for discharging the metal mesh buoyant by suction, and the detection means to be more presence and a plurality of the separated by said suction separating means, by the detection means The suction / separation adjusting means that changes the suction / separation force so that optimum suction / separation can always be performed, and when there are a plurality of sheets, the wire mesh under the plurality of wire meshes separated by suction is detected based on the detection signal from the detection signal. Peeling hands to peel off by suction
A step, the peeling means being arranged on both sides of the suction separating means
And the peeling magnet is attached to the tip of the air cylinder arm.
The support arm of the support bracket with stones is pivoted and
An arm swinging around a fulcrum on the support bracket
Underside of a plurality of wire meshes that are attached and separated by suction
The stripping magnet provided in the stripping means swings up the wire mesh of
To remove by suction, and swing down to remove the excitation.
A wire mesh separating / supplying device which releases a wire mesh that has been suction-peeled by and. 2. The attraction / separation force adjusting means for varying the attraction / separation force is configured to automatically change the voltage of the attraction electromagnet from a drive motor via a variable transformer in response to a signal from the detection means. Wire mesh separation and supply device.