JPH0141705Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a metal plate for taking a flat metal plate such as a thin steel plate and automatically feeding it one by one to various processing devices such as a press or a cutting machine. This invention relates to an automatic single-sheet feeding device.

One or more workers are required to supply cutting plates such as flat thin steel plates, which are conventionally stacked on a supply stage, one by one to a processing device such as a press or cutting machine. Currently, the work of supplying large cut plates to processing equipment is not only dangerous for the workers, but also involves enormous labor costs. Furthermore, if processing equipment such as a press or cutting machine is supplied with two iron plates by mistake, the blades of the processing equipment will be damaged, so never supply only one iron plate. This is said to be one of the reasons why the realization of mechanization and automation for supplying metal sheets to processing equipment has been delayed.

The present invention has been made in view of the above points, and an example of its implementation is shown in the drawings below. An electromagnetic float 2 is fixedly installed on the proximal edge of a replenishment stage 1, and is mounted on the replenishment stage 1 on the opposite side. A press plate 4 is provided so as to be able to be pushed out to press a plurality of workpieces 3 such as cut plates made of flat thin steel plates placed in contact with the electromagnetic float 2, and is provided on the proximal end side of the replenishment stage 1. That is, a hook spring 6 is vertically disposed on a horizontal shaft 5 that moves forward from the electromagnetic float 2 to the upper surface of the replenishment stage 1, and the replenishment stage 1 has an apron 7 integrally extended and protruded from the front. A stopper 8 is installed on the front edge of the apron 7, and the piece of workpiece 3 transferred from the replenishment stage 1 to the apron 7 is moved to the lifting rotary arm 1 equipped with an electromagnet 9.
0 to a processing table of a processing device (not shown).

The upper surface of the replenishment stage 1 is preferably formed as a screen surface 11 extending in the length direction, and this screen surface 11 is preferably extended integrally to the apron 7.

The hook spring 6, as shown in FIG. The hook part 12 at the lower end is installed to pass through the gap of the screen surface 1, and the horizontal shaft 5 equipped with this hook part 12 is attached to the trolley 1.
3 is installed and held integrally on a support 14 vertically installed,
The trolley 13 is guided by rails 15 laid along the sides of the replenishment stage 1.

The electromagnetic float 2 does not need to have such a strong magnetic force that each of the plurality of workpieces 3 placed on the replenishment stage 1 levitates the entire surface and separates them. It is sufficient to have enough magnetic force to levitate and separate only one edge of the contacted workpiece, and by limiting the magnetic field to an extremely narrow range, when the hook spring 6 comes into contact with the workpiece 3, In addition, it is preferable to prevent the hook spring 6 from being influenced by magnetism such as adsorption to the workpiece 3 as much as possible. Further, it is preferable that the hook spring 6 is installed so as to pass through a location away from the magnetic field where magnetism does not work, or a location where magnetism is weak.

Further, the workpieces 3 are stacked beside the replenishment stage 1, and a plurality of workpieces are stacked by an elevating rotary arm 17 equipped with an electromagnet 16, similar to the elevating rotary arm 10 installed on the apron 7. The articles 3, preferably every 5 to 10 articles, are supplied to the supply stage 1. And the bamboo surface 1 of supply stage 1
The upper end of the operation button 18 of the switch (not shown) is projected from the gap 1, and when the workpiece 3 is removed from the screen surface 11, the lifting and lowering rotary arm 16 is operated to move the workpiece 3 to the replenishment stage 1. Let them supply it.

Furthermore, the pressing plate 4 is installed at the tip of the rod 20 of the cylinder 19, so that the workpiece 3 on the replenishing stage 1 can be pressed into contact with the electromagnetic float 2. The operations of the pressing plate 4, the hook spring 6, the lifting/lowering rotary arm 10, etc., and the excitation of the electromagnet 9 are set by a limit switch, a solenoid, etc. so as to operate in sequence in accordance with the processing cycle of the processing device.

Since the present invention has the above-mentioned configuration, the workpieces 3 stacked next to the supply stage 1 are lifted up and down by the electromagnet 16 by the operation of the lifting and lowering rotating arm 17.
The workpieces 3 are sucked and replenished onto the screen surface 11 of the replenishment stage 1. Thereupon, the cylinder rod 20 is pushed out to press the plurality of workpieces 3 placed on the supply stage 1 into contact with the electromagnetic float 2 by means of the press plate 4. At this time, due to the magnetic force of the electromagnetic float 2 divided into multiple stages, the plurality of workpieces 3 are separated from each other only at one end edge of the workpieces 3 that is in contact with the electromagnetic float 2. They repel each other, float to the surface, and are kept separate. Next, the cart 13 moves forward to move the horizontal shaft 5 over the supply stage 1, and as the horizontal shaft 5 moves, the hook spring 6 first comes into contact with the edge of the workpiece 3 on the uppermost stage. , as shown in FIG. 4, the hook spring 6 is bent at the point where it comes into contact with the workpiece 3, and at this time, the hook spring 6 passes through a point away from the magnetic field, so it is not affected by magnetism. However, even if the hook spring 6 receives some attraction force due to the influence of magnetism, the horizontal shaft 5 will move further against this attraction force and the hook spring 6 will move toward the edge of the workpiece 3. The hook portion 12 is held and engaged with the edge of the workpiece 3 at the uppermost stage. Then, as the horizontal shaft 5 moves forward, only one workpiece 3 is carried to the apron 7. The workpiece 3 is placed and held on the apron 7 by the stoppers 8 of the apron 7. The horizontal shaft 5 that has finished transporting the workpiece 3 to the apron 7 retreats, and the hook spring 6
As shown in FIG. 5, the tool is bent and retreated in the opposite direction from the forward movement over the next workpiece 3a remaining in the replenishment stage 1, and is brought to a double-return position. The workpiece 3 on the apron 7 is moved up and down by the rotating arm 10
Simultaneously with the descent, the electromagnet 9 is energized to attract the workpiece 3, and as the lifting/lowering rotary arm 10 rises, it rotates and descends above the processing table (not shown) of the processing device, and at the same time, the electromagnet 9 is energized. It is released and one workpiece 3 is distributed onto the processing table. Lifting rotating arm 1
0 is rotated upward and brought to the return position.

The above operations are repeated in sequence to feed the plurality of workpieces 3 placed on the replenishment stage 1 one by one to the apron 7, thereby ensuring that only one workpiece 3 is automatically supplied to the processing device.

It goes without saying that it is also possible to extend it directly from the apron 7 into the processing device.

When the workpiece 3 on the replenishment stage 1 runs out, the operation button 18 provided on the replenishment stage 1 moves upwards, energizing a switch (not shown), and the elevating and lowering rotary arm 17 lifts and lowers the apron 7. Approximately 5 to 10 workpieces 3 stacked near the replenishment stage 1 are replenished and placed on the replenishment stage 1 by the same operation as the rotary arm 10.

Therefore, the present invention automatically and reliably picks up one metal plate, such as a thin steel plate, which is stacked in the form of a flat plate, and supplies only this one metal plate to the processing equipment. It is possible to realize mechanization and automation for processing, and it is not only possible to easily feed one sheet even in the case of oil-containing metal plates, but also to easily feed large and heavy metal plates or circular plates. Moreover, even in the case of various polygonal plates, the present invention has the advantage that it is an epoch-making device that can automatically feed single sheets by arranging the number and arrangement positions of electromagnetic floats in correspondence with each other.

[Brief explanation of drawings]

The figures relate to the present invention, and Fig. 1 is a front view, Fig. 2 is a plan view, Fig. 3 is a sectional view taken along line A-A in Fig. 1, and Fig. 4 shows the hook spring moving forward. FIG. 5 is an enlarged view of the main part showing a state in which the hook spring is in the process of retracting and returning, and FIG. 6 is a perspective view of the hook spring. 1... Supply stage, 2... Electromagnetic float, 3... Workpiece, 4... Pressing plate, 5... Horizontal shaft, 6... Hook spring, 7
...Apron, 9...Electromagnet, 10...Elevating and lowering rotating arm, 1
1...Sashimi side, 12...Hook part.

Claims (1)

[Scope of utility model registration request] The replenishment stage has an apron integrally extended in the front, and the upper surface from the replenishment stage to the apron is formed as a shield surface, and an electromagnetic float is installed on the proximal edge of the replenishment stage and is placed on the replenishment stage. A pressing plate is installed so as to be able to be freely pushed out from the side of the apron for bringing the processed workpiece into pressure contact with the electromagnetic float, and the hook spring is formed of a coil spring and has a hook portion at its lower end, The hook spring is fixed at its upper end to a horizontal shaft that reciprocates upwardly between the aprons from the base end side of the stage, and the hook portion at the lower end is installed so as to pass between the screen surfaces, and an electromagnet is attached at the tip. The lifting rotary arm has an electromagnet installed between the apron and the processing device so as to be able to move up and down freely in order to supply the workpiece on the apron to the processing device, and also moves the workpiece beside the replenishment stage to the replenishment stage. 1. An automatic one-piece metal sheet feeding device constructed by installing an electromagnet to be able to rotate up and down between the side of the replenishment stage and the replenishment stage.