JP3058478U - Apparatus for individually removing bulk magnetic material and chain magnet for the apparatus - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To reliably, automatically, safely and easily take out one by one from an open-top container storing loose magnetic materials such as steel parts. SOLUTION: A chain-shaped magnet formed by connecting permanent magnets endlessly to a driving wheel and a guide having a horizontal rotating shaft,
A peeling plate is provided near the outer surface of the magnet at a position where the magnet is rotatably suspended and the magnet changes its direction from a horizontal direction to a downward direction. At a position where the chain magnet moves in the horizontal direction, it is preferable to provide a peeling roller that rotates in synchronization with the magnet with the outer peripheral surface protruding above the upper surface of the magnet. It is preferable that an adjusting device for adjusting the distance between the driving wheel and the guide be provided in accordance with the opening size of the container. An endless chain in which a plurality of inner links and a plurality of outer links are connected by pins. A chain magnet in which a permanent magnet is rotatably supported at an end by each pin.

Description

[Detailed description of the invention]

[0001]

[Technical field to which the invention belongs]

 The present invention is intended to securely, automatically, safely and easily take out one magnetic substance at a time from an open-top container containing a large number of loose magnetic substances such as steel parts having various shapes. And a chain magnet for the device that can be supplied to the next step.

[0002]

[Prior art]

 In the process of processing loose magnetic material (hereinafter referred to as “work”) such as steel parts or manufacturing products by incorporating works, among many works stored in containers such as resin containers, It is necessary to take them out one by one and supply them to the next process.

[0003] As means for individually taking out such a work, an electromagnet is suspended in an open-topped container, a plurality of works are attracted to the electromagnet from a large number of stored works, and the work is separately provided. It is known that a work is separated from an electromagnet on a cutting device and supplied one by one to a next process. This method is generally intended for medium-sized workpieces such as cups and polygons having a diameter of about 150 mm, and flat plates having a width and length of about 150 mm. In addition, a large flat plate or a work with a shape close to a flat plate with a width or length exceeding 150 mm is attracted to a suction pad or small electromagnet from a state where it is stacked on the table by hand or another machine. It is also known that these are supplied one by one to the next step.

[0004] Further, for small loose parts, a device called a parts feeder in which a storage tank and a cut-out vibration feeder are integrated is used, and a work manually supplied from a container to the storage tank is used by a vibration feeder. It is also known to supply them individually. Japanese Utility Model Laid-Open Publication No. Hei 7-31146 discloses that as a means of purifying oil in a tank, contaminants in oil are continuously circulated through an endless magnetic adsorption device in which a large number of permanent magnets are arranged. There is disclosed a device for adsorbing and guiding to the upper part of the tank and removing it by a cleaner.

[0005]

[Problems to be solved by the invention]

 When using an electromagnet as described above in a conventional unloader for medium-sized workpieces, generally, the attractive force of the electromagnet is so strong that a plurality of workpieces are simultaneously attracted to the electromagnet and a plurality of Since it is difficult to cut out the works one by one from the electromagnet, it is necessary to separate a plurality of works from the electromagnet at the same time and to cut out one by one by another means.

In addition, in order to move the electromagnet with respect to the container, an industrial robot for three-axis movement of the X axis (long side direction), the Y axis (short side direction), and the Z axis (depth direction) is required. It becomes heavy equipment. Furthermore, the number of workpieces simultaneously adsorbed on the electromagnet is often small, and when a short tact is required for mass production, repetitive operations become extremely large and the equipment becomes expensive.

In addition, since the above-described conventional technology for small-sized works requires human labor, the above-described conventional technology for large-sized works is an intermittent operation. It is rare. Furthermore, the technique disclosed in the above publication is an apparatus for removing contaminants in a liquid using a magnetic adsorption device, and is different from the present invention.

Therefore, the problem of the present invention is to reliably and automatically work one by one from an open-top container in which a large number of loose magnetic materials (work) such as steel parts having various shapes are stored. An object of the present invention is to provide a device which can be safely and easily taken out and supplied to the next step, and a chain magnet for the device.

[0009]

According to the present invention for solving the above-mentioned problems, a chain-shaped magnet 1 installed above an open-top container 6 and having a permanent magnet connected endlessly has a rotating shaft. A chain-like position at which the chain-shaped magnet 1 is suspended rotatably in contact with the driving wheel 2 provided horizontally and the guides juxtaposed with the driving wheel 2, and the chain-shaped magnet 1 turns downward from the horizontal direction. A separate magnetic material removing device characterized in that a peeling plate 4 is provided close to the outer surface of the magnet 1.

At the position where the chain magnet 1 moves in the horizontal direction, the peeling roller 5 that rotates in synchronization with the chain magnet 1 with the outer peripheral surface protruding above the upper surface of the chain magnet 1. Preferably, an adjusting device 10 for adjusting the distance between the driving wheel 2 and the guide according to the opening size of the upper open container 6 is preferably provided. . Further, it is preferable that both the peeling roller 5 and the adjusting device 10 are provided.

In the present invention, a permanent magnet 16 is rotatably supported at each end of each pin 17 of an endless chain in which a plurality of inner links 13 and a plurality of outer links 14 are connected by pins 17. It is also a chain magnet for an individual take-out device for bulk magnetic material, which is characterized in that it is manufactured.

[0012]

[Embodiment of the invention]

 The device of the present invention will be described with reference to an example of a front view shown in FIG. 1 and a side view shown in FIG. In both figures, the top open type container 6 shows a cross section, and clearly shows the internal state. The device of the present invention is a device for taking out the workpieces 11 stored in the open-top container 6 one by one from the chute 12, and is installed above the open-top container 6, and has the chain magnet 1, A guide such as a driven vehicle 3 and a peeling plate 4 are provided. Preferably, one or both of the peeling roller 5 and the adjusting device 10 (shown in FIG. 4) are provided.

The chain magnet 1 is in the form of an endless belt formed by connecting permanent magnets endlessly, and is suspended by a driving wheel 2 and a guide. In this example, the driving wheel 2 is supported by the frame 9 with the rotation axis being horizontal, is inscribed in the chain magnet 1, is connected to the motor 18 by the belt 19, rotates, and drives the chain magnet 1 to rotate. . The driven wheel 3 is provided in parallel with the driving wheel 2 and is rotated by the driving of the chain magnet. The peeling plate 4 is provided near the outer surface of the chain magnet 1 at a position where the chain magnet 1 moves on the driving wheel 2 and changes its direction from the horizontal direction to the lower side.

The peeling roller 5 rotates synchronously with the chain magnet 1 at a position where the chain magnet 1 moves in the horizontal direction, with the outer peripheral surface protruding above the upper surface of the chain magnet 1. In this embodiment, the motor is mounted on both sides of the chain magnet 1 so as to be coaxially rotatable with the drive wheel 2. As shown in FIG. 4, the adjustment device 10 is for adjusting the distance between the driving wheel 2 and the guide in accordance with the opening size of the upper open-type container 6, and in this example, the adjustment device is used as a guide. All driven vehicles 3 are configured to move. The open-top container 6 can be moved up and down by an elevating device 7, and can be moved in the vertical direction of FIG. 1 by a horizontal shift device. 1 and 2 show a state where the container 6 is raised.

First, the chain-shaped magnet 1 is suspended by the driving wheel 2 and the driven wheel 3, and the upper open-type container 6 in which a large number of works 11 are stored is placed directly below the parabolic hanging state. It is moved by the shift device 8 and raised by the lifting device 7. Then, the chain-shaped magnet 1 is placed on the work 11 as shown by 1-1 in FIG. In this state, the lifting of the container 6 is stopped. Stopping can be performed by electrically detecting that the suspended chain-shaped magnet 1 changes from a parabolic shape like 1-2 in FIG. 1 to a vertical hanging shape like 1-1 in FIG. When the container 6 is lowered after a lapse of a predetermined time, the chain magnet 1 is in a state as shown in FIG. 1B, and the attracted work 11 and the other work 11 are separated. The container 6 stops descending at a predetermined position.

Next, the drive wheel 2 is rotated to rotate the chain magnet 1 in the direction of the arrow. Then, the attracted work 11 rises together with the chain magnet 1. At this time, a part of the work 11 which is stably sucked falls, but the posture of the other work 11 is changed to a stable suction state. The sucked work 11 is turned in the horizontal direction on the driven vehicle 3 to reach the drive vehicle 2, and when the work 11 is to be turned in the downward direction from the horizontal direction, the leading end rides on the peeling plate 4, and the chain moves. It is separated from the magnet 1 and falls on the chute 12 to be taken out.

The work 11 falling on the chute 12 is detected by a sensor, and the driving of the driving vehicle 2 is stopped immediately to stand by. When a signal indicating that the work 11 is required is received from the lower process, the driving wheel 2 is re-driven to move the chain-shaped magnet 1, and the next sucked work 11 is similarly removed. In this way, the plurality of works 11 adsorbed on the chain magnet 1 are taken out one by one. Depending on the situation of the lower process, the driving vehicles 2 can be taken out one by one without stopping.

When the work 11 adsorbed by the chain magnet 1 disappears, the work 11 does not drop onto the chute 12 even if the chain magnet rotates by driving the driving wheel 2. This relationship is electrically detected, the upper open-type container 6 is raised again, and the work 11 is sucked in the same manner as described above, and thereafter, the works 11 are taken out one by one. At this time, the container 6 can be moved by the horizontal shift device 8 as needed, and the position can be adjusted so that the chain magnet 1 is placed at an appropriate position in the container 6.

In the device according to the present invention, the suction length of the work 11 is increased while the chain magnet 1 is vertically suspended as shown in FIG. Stable adsorption is performed. In addition, the work 11 attracted to the chain magnet 1 is smoothly turned from the upward direction to the horizontal direction in a stable state, and the horizontal movement distance is maintained. Therefore, as the guide, in addition to the driven wheel 3 as in this example, a guide plate which is appropriately curved may be used. The diameter of the driven vehicle 3 or the curved shape or curvature of the guide plate can be appropriately determined in accordance with the opening size of the upper open container 6 and the shape and size of the target work 11.

In particular, when the work 11 is flat, it is more effective to provide the peeling roller 5. When the flat work 11 changes its direction from the horizontal direction to the downward direction on the driving wheel 2, there is a possibility that the leading end enters the lower side of the peeling plate 4 and stops at that position. In such a situation, the work 11 cannot be taken out, and the device may be damaged. However, when the peeling roller 5 is provided, the portion of the work 11 protruding from the width of the chain magnet 1 rides on the peeling roller 5, so that the work 11 can be surely put on the peeling plate 4 and is stable. Extraction becomes possible. In this case, the work 11 having a size larger than the inner space of the peeling rollers 5 installed on both sides in the width direction of the chain magnet 1 as shown in FIG.

Further, it is more effective to provide an adjusting device 10 for moving a guide such as the driven vehicle 3 according to the opening size of the upper open type container 6. For example, when the opening of the container 6 is wide, as shown in FIG. 4, the driven wheel 3 is moved from the position 3-1 to the position 3-2 so that the chain magnet 1 is vertically suspended and the workpiece 11 is moved downward. By increasing the suction length, stable suction can be performed according to the opening size. In this example, the adjustment device 10 includes a nut fixed to the driven vehicle 3, a long bolt penetrating therethrough and fixed to the frame 9, and a rotation mechanism of the bolt.

In the examples shown in FIGS. 1 and 2, the case where the upper open-type container 6 is moved up and down by the elevating device 7 and moved horizontally by the horizontal shift device 8 is shown. May be moved up and down and moved horizontally. For example, as shown in FIG. 3, the drive vehicle 2 may be mounted on a moving frame 20, and a mechanism for raising and lowering and moving the moving frame 20 horizontally by an elevating device 7 and a horizontal shift device 8 installed on the frame 9 may be used. .

Next, as shown in the examples of FIGS. 5 and 6, the chain magnet 1 of the present invention has an endless chain in which a plurality of inner links 13 and a plurality of outer links 14 are connected by pins 17. A permanent magnet 16 is rotatably supported at its end by each of the pins 17. FIG. 5 is an overall front view of the vehicle suspended from the driving vehicle 2 and the driven vehicle 3, FIG. 6 (a) is a partially enlarged view of a side surface, and FIG. 6 (b) is an AA view of (a). .

Since the permanent magnet 16 is rotatably supported by the chain, as shown in FIG. 5, even when the permanent magnet 16 is extended inside the chain magnet 1, the permanent magnet 16 contacts the driving wheel 2 and the driven wheel 3. The driving of the chain magnet 1 is not hindered. Then, the permanent magnet 16 can be attracted according to the shape of the work 11. Note that, depending on the shape of the work 11, the permanent magnet 16 may be mounted so as to protrude outside the chain magnet 1.

In this example, as shown in FIG. 6, a pair of rectangular parallelepiped permanent magnets 16 are sandwiched by a yoke 15 to enhance the attraction force. I have. As shown in the figure, the magnets 16 have the same polarity in both the width direction and the length direction, and thus the chain magnet 1 is stretched.

[0026]

【Example】

 Using the device of the present invention shown in FIGS. 1 and 2, the cup-shaped workpieces 11 stored in the open-top container 6 were taken out one by one. The container 6 is made of resin and has an inner method of 500 mm × 700 mm and a depth of 500 mm. The work 11 is made of steel, has a diameter of 100 to 150 mm, a height of about 30 mm, and a thickness of about 2 mm.

The chain-like magnet 1 has plastic magnets of the same shape as the link plate of the chain and having a thickness of about 10 mm provided on both sides of a bi-pitch chain generally used for a small conveyor. The one having a length of about 100 mm and a length of about 2 m was used. For the drive vehicle 2, a bi-pitch sprocket with a reduction motor was used.

A hydraulic scissors lifter with a height of 700 mm was used as the elevating device 7 for the upper open type container 6, and a multipoint stop type rodless cylinder with a moving distance of 700 mm was used as the horizontal shift device 8. As a result, about 1000 workpieces could be taken out one by one stably without any trouble with a tact time of about 30 seconds.

[0029]

[Effect of the invention]

 With the unloading device of the present invention, it is possible to reliably, automatically, safely and easily unload workpieces such as steel parts stored in the open-top container one by one. Since it has a simple structure using permanent magnets, both initial and running costs are low. Moreover, it is possible to easily cope with this by appropriately changing the attraction force of the permanent magnet in the chain magnet or the arrangement in the width direction and the length direction according to the size, weight and shape of the target work. it can. Even when the work is a flat plate, the work can be prevented from overlapping and sucking, and multiple sheets are not taken out at the same time.

In particular, when the target work has a medium size of about 150 mm in diameter, it can function satisfactorily even if the shape, weight and size of the work slightly vary. Since the chain magnet can be deformed not only in the longitudinal direction but also in the width direction, it is not necessary to position the workpiece in the container with high accuracy. Furthermore, since the work is taken out above the open top type container, the work can be supplied to the next process at a high position, and a lifter or the like is not required.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional front view showing an example of use of the device of the present invention.

FIG. 2 is a partially sectional side view showing an example of use of the device of the present invention.

FIG. 3 is a partially sectional side view showing another example of the device of the present invention.

FIG. 4 is a partial cross-sectional front view showing another example of the device of the present invention.

FIG. 5 is a front view showing an example of using the chain magnet of the present invention.

6A is a partially enlarged side view showing an example of the chain magnet of the present invention, and FIG. 6B is a cross-sectional view taken along line AA of FIG. 6A.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Chain magnet 2 ... Driving wheel 3 ... Driven vehicle 4 ... Peeling plate 5 ... Peeling roller 6 ... Top-open container 7 ... Elevating device 8 ... Horizontal shift device 9 ... Frame 10 ... Adjustment device 11 ... Work 12 ... Chute 13 ... Inner link 14 ... Outer link 15 ... Yoke 16 ... Permanent magnet 17 ... Pin 18 ... Motor 19 ... Belt 20 ... Moving frame

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Tomoyuki Mitsuhashi 12 Nakamachi, Muroran, Hokkaido Nittetsu Muroran Engineering Co., Ltd. (72) Inventor Akira Yokoyama 145-1 Yufutsu, Tomakomai, Hokkaido (72) Inventor Shinichi Sozono 145-1, Yufutsu, Tomakomai, Hokkaido Toyota Motor Hokkaido Co., Ltd.

Claims (4)

[Utility model registration claims] 1. A drive wheel provided with a permanent magnet connected endlessly, which is installed above an open top container, and a drive wheel provided with a rotation axis horizontal and a guide provided in parallel with the drive wheel And a peeling plate is provided in close proximity to the outer surface of the chain-shaped magnet at a position where the chain-shaped magnet is turned downward from a horizontal direction in a rotatable manner. Individual take-out device for loose magnetic material. 2. At a position where the chain magnet moves in the horizontal direction, with an outer peripheral surface protruding above an upper surface of the chain magnet,
2. The apparatus according to claim 1, further comprising a peeling roller that rotates in synchronization with the chain magnet. 3. An adjusting device for adjusting a distance between the driving wheel and the guide according to an opening dimension of the open-top type container. An individual take-out device for the described bulk magnetic material. 4. An endless chain in which a plurality of inner links and a plurality of outer links are connected by pins, wherein each of the pins has a permanent magnet rotatably supported at its end. Chain magnet for individual take-out device of loose magnetic material.