JPH0236599Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention relates to a magnetic sorting device that can reliably separate magnetic metal parts and non-magnetic materials, and is applicable to the industry of manufacturing and using the sorting device. It belongs to the field.

(Prior art) A conventional magnetic sorting device is shown in Fig. 6 (1973-
11022) and Fig. 7 (Utility Application No. 11022), the belt 38 is attached to a sorting drum 36 and a relatively large diameter guide roll 37, and the belt 38 is attached to a sorting drum 36 and a guide roll 37 of relatively large diameter. The magnetic metal parts that were attracted were transported to the guide roll side and then dropped into the storage box below at the point where the belt was on its way out.

(Problems to be solved by the invention) As mentioned above, in the conventional magnetic sorting device, since the guide roll has a relatively large diameter, needle-shaped or thin plate-shaped magnetic metal parts are separated by the surface tension of water or static electricity. Even on the outward journey, it does not fall downward and is conveyed to the sorting drum side while remaining in close contact with the belt.
There were problems such as the product falling into areas other than the storage box.

(Means for Solving the Problems) This invention solves the above problems by installing a small-diameter auxiliary roll below the guide roll and attaching belts to the sorting drum, the guide roll, and the auxiliary roll.

That is, in this invention, a feeder with a vibrating device is installed on the machine body so as to be able to vibrate, a sorting drum with built-in magnetism is installed on the machine body so as to face the feeder, and the sorting drum and the feeder are installed on the machine body. In a magnetic sorting device in which a belt is attached between the guide roll and the guide roll, an auxiliary roll having a smaller diameter than the guide roll is installed on the body below the guide roll, and a belt is attached to the sorting drum, the guide roll, and the auxiliary roll. A magnetic sorting device was constructed. In the above, the same effects can be obtained whether the feeder is installed horizontally or diagonally. In addition, the surface of the belt is provided with diamond-patterned minute protrusions to prevent thin workpieces from adhering to it. Of course, the shape of the belt surface is not limited to the diamond pattern, but may be any uneven shape that facilitates separation of the workpieces.

(Operation of the invention) As mentioned above, in addition to the large-diameter guide roll, a small-diameter auxiliary roll is provided on the outgoing path of the belt, so the contact area between the belt and the magnetic metal parts is reduced in the small-diameter auxiliary roll portion. Even needle-shaped or thin plate-shaped magnetic metal parts can be reliably dropped on the forward path of the belt.

(Example 1) Next, details of this invention will be explained based on an example shown in the attached drawings. FIG. 1 is a front view of an embodiment of the invention, FIG. 2 is a plan view, FIG. 3 is a side view, and FIG. 4 is an enlarged partially cutaway plan view of the sorting drum belt.

A vibration conveyance device 3 is horizontally suspended by springs 4, 4 to a body 1 having wheels 2, 2 at the bottom. The vibration conveyance device 3 includes a pair of vibration devices 5, 5 attached to the bottom, a feeder 6, a hopper 7, and a side plate 8.
and a discharge port 9, etc. As the vibration device 5, a known Uras motor (manufactured by Yaskawa Electric Co., Ltd.) or the like is used. As shown in FIG. 2, a pair of guides 10, 10 are installed in the feeder 6 at a distance larger than the opening of the hopper 7. A flow rate adjusting plate 11 is attached to the hopper 7 to adjust the interval between the openings. Above the feeder 6, a magnetic sorting device 12 is suspended from the machine body 1 with bolts 13 and nuts 14 so that its height can be adjusted. The magnetic sorting device 12 has a sorting drum 15 with a built-in permanent magnet installed facing the upper surface of the feeder 6 and parallel to its front edge, and a guide roll 16 and an auxiliary roll 24 are installed on one side of the machine body parallel to the sorting drum. A rubber belt 17 is installed between the sorting drum 15, the guide roll 16, and the auxiliary roll 24. The diameter of the auxiliary roll 24 is smaller than the diameter of the guide roll 16, and preferably about 1/5 to 1/2 of the diameter of the guide roll. For example, if the guide roll has a diameter of 100 mm, the auxiliary roll has a diameter of 20 mm to 50 mm. The sorting drum 15
is pulley 18, belt 19 and pulley 20
It is driven by a motor 21 via. If a diamond-patterned minute protrusion 22 is provided on the surface of the belt 17 as shown in FIG. 4, it is possible to prevent magnetic metal parts from adhering to the belt 17 (due to surface tension of water, etc.). can. In addition, 23 in the figure is a demagnetizer.

The operation of the device of this invention will be explained based on the above embodiment. A mixture of magnetic metal parts and non-magnetic materials is charged into the hopper 7, and the vibrating device 5 of the vibrating conveyance device 3 is driven. The amount of mixture discharged from the hopper 7 is adjusted by a flow rate adjustment plate 11. Further, the conveyance speed of the mixture can be adjusted by adjusting the opening angle of unbalanced weights built into the vibration devices 5, 5. When the mixture that has passed through the opening of the hopper 7 is guided by the guides 10 and 10 on the feeder 6 and moves to the lower part of the sorting drum 15 of the magnetic sorting device 12, the magnetic metal parts in the mixture are attracted to the sorting drum 15. The magnet is transported to the guide roll 16 side while remaining attached to the belt 17, and is subjected to a demagnetizing action by the demagnetizer 23. Next, when the belt 17 passes through the guide roll 16 and goes on its outward path, the belt 17 becomes vertical, so that most of the magnetic metal parts on the belt 17 fall into a storage box (not shown) below. Even with this, the magnetic metal parts that are in close contact with the belt 17 due to the surface tension of water, static electricity, etc.
When reaching the small diameter auxiliary roll 24, the belt 18
Since the contact area between the magnetic metal parts and the magnetic metal parts is small,
Everything will fall. If you spray the shower on the outbound part, the effect will be even better.

On the other hand, the non-magnetic material moves on the feeder 6 and falls into the non-magnetic material container (not shown) through the discharge port 9, and the sorting operation is completed.

(Embodiment 2) Next, another embodiment of this invention will be described based on FIG. A feeder 32 equipped with a vibration device 33 is installed on one side of the machine body 31 so as to be able to vibrate at an angle, and a sorting drum 36 with a built-in magnet is installed parallel to the edge facing the discharge end of the feeder 32. A belt 38 is installed between the sorting drum 36 and a guide roll 37 and an auxiliary roll 39 installed on the other side of the machine body 31, and the flow rate adjustment device 3 is connected to the discharge side of the feeder 32.
5 and a gap adjustment device 34 are attached. 40 is a tension roll of the belt 38.

This embodiment is substantially similar to the previous embodiment except that the feeder is installed diagonally. Next, the operation of this invention will be explained. That is, the feeder 32
A mixture of magnetic metal parts and non-magnetic materials is placed thereon, and the vibration device 33 is driven. The mixture on the feeder 32 has its flow rate adjusted to a constant level by the flow rate adjustment device 35 and is discharged to the gap adjustment device 34 .
In the mixture that has reached the gap adjustment device 34, only the magnetic metal parts are attracted to the sorting drum 36, and the non-magnetic materials fall down from the gap in the gap adjustment device 34 as shown by an arrow 41. On the other hand, the magnetic metal parts attracted to the sorting drum 36 are carried to the guide roll 16 side as shown by arrows 42 and 43, and most of the magnetic metal parts fall downward at the vertical position where the belt 38 is the outward path. However, all of the magnetic metal parts that are in close contact with the belt 38 will fall off at the small diameter auxiliary roll 39 as shown by the arrow 44.

(Effect of the invention) According to this invention, in addition to the large diameter guide roll,
A small diameter auxiliary roll is installed on the outgoing path of the belt, so
Even needle-shaped or thin plate-shaped magnetic metal parts can be reliably dropped by a sudden change in direction of the belt. Therefore, there is no need to repeat re-selection many times. In addition, since the magnetic metal parts do not fall outside the storage box, there is no risk of staining the floor.

[Brief explanation of the drawing]

Fig. 1 is a front view of an embodiment of this invention, Fig. 2 is a plan view, Fig. 3 is a side view, Fig. 4 is a partially enlarged plan view of the sorting belt, and Fig. 5 is a plan view of the same. FIG. 6 is a front view of a conventional device, and FIG. 7 is a front view of another conventional device. 1... Airframe, 3... Vibration conveyance device, 5... Vibration device, 6... Feeder, 7... Hopper, 11
...Flow control plate, 12...Magnetic sorting device, 15...
... Sorting drum, 16 ... Guide roll, 17 ... Belt, 23 ... Demagnetizer, 24 ... Auxiliary roll, 3
2... Feeder, 33... Vibration device, 34...
Gap adjustment device, 35...Flow rate adjustment device, 36...
Sorting drum, 37...guide roll, 38...belt, 39...auxiliary roll.

Claims (1)

[Claims for Utility Model Registration] 1. A feeder with a vibrating device is installed on the machine body so as to be able to vibrate, and a sorting drum with built-in magnetism is installed on the machine body so as to face the feeder, and the sorting drum and the machine body In a magnetic sorting device in which a belt is attached between a guide roll installed in A magnetic sorting device characterized by being equipped with. 2. The magnetic sorting device according to claim 1 of the utility model registration, in which the feeder is installed horizontally. 3. The magnetic sorting device according to claim 1, in which the feeder is installed obliquely. 4. The magnetic sorting device according to claim 1, wherein the belt has a diamond-patterned minute protrusion on its surface.