JP2881736B2 - Charged foreign matter collection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charged foreign matter collecting apparatus for removing and collecting foreign matter such as hair mixed in foods that are dried and packaged as bags using static electricity.

[0002]

2. Description of the Related Art Conventionally, as this type of apparatus, there is one disclosed in the following publication, for example. Japanese Patent Publication No. Hei 6-77700 This relates to the application of the present applicant, and a light food such as finely chopped seaweed seaweed is slid down along an inclined guide surface, and together with a part thereof, Foreign matter such as hair is sucked and fly by the first charged mesh plate made of wire mesh, and the foreign matter that has passed through the mesh of the first charged mesh plate is further sucked by the second charged mesh plate to thereby remove the foreign matter. It is captured by a two-charge mesh plate.

[0003] While the raw material to be processed is placed on a vibrating trough and sequentially moved and moved, an endless belt (electrical) receiving a discharge from a needle electrode and receiving a negative charge above the raw material. The endless belt is charged and adsorbed by the endless belt to move the foreign matter in the processing object to a predetermined position, and the attached foreign matter is forcibly sucked by a suction nozzle for cleaning. And collect (dust absorption).

[0004]

However, in the above-mentioned conventional apparatus, the collection of foreign matter is performed by a wire mesh charged mesh plate. Therefore, if the charged mesh plate is clogged, the collection efficiency of the foreign matter is extremely reduced. There is a problem that it is necessary to frequently clean the charged mesh plate, which is very troublesome.

Further, in the above-mentioned apparatus, a large number of needle electrodes are required to charge the endless belt to maintain the suction of foreign substances up to the dust-absorbing position, and the foreign substances adsorbed on the endless belt are removed from the endless belt. However, since a powerful dust suction device is required for cleaning the endless belt, it is expensive and generates noise.

SUMMARY OF THE INVENTION An object of the present invention is to provide a charging type foreign matter collecting apparatus which can remove and collect foreign matters such as hair more easily than the prior art and which does not require a special cleaning operation.

[0007]

SUMMARY OF THE INVENTION The present invention relates to a charging type foreign matter collecting apparatus for collecting foreign matter such as hair from a large number of workpieces conveyed on a belt conveyor 1 by electrostatically attracting and collecting the foreign matter. The charging electrode plate 3 to which a high DC voltage is applied from the high voltage power supply 15 for use is suspended vertically above the mounting plate 13 by adjusting screws 12 above the belt conveyer 1 so as to be adjustable in height. In order for the adhesive tape 4 to run while sliding on the lower surface of the electrode plate 3, the charged electrode plate 3
, A take-out reel 5 for supporting the tape roll 4a of the adhesive tape 4 and a take-up reel 6 for winding the adhesive tape 4 on the other side. The adhesive electrode 4 is guided by the belt conveyer 1, and the charging electrode plate 3 is provided by the pre-charging high-voltage power supply 24 behind the feeding-side guide roller 9.
A precharging electrode 23 to which a high voltage having a polarity opposite to the charging polarity is applied, and a high-voltage power supply for static elimination is provided forward of the winding-side guide roller 10 with the conveying direction of the belt conveyor 1 facing forward. A discharge electrode 17 to which a high voltage or an alternating high voltage is applied alternately by + 18 is arranged.

According to such a structure, a large number of workpieces conveyed by the belt conveyor have a polarity opposite to the polarity of the charged electrode plate by the preliminary charging electrode behind the guide roller on the feeding side. After being pre-charged, it is subjected to a charging action by the charged electrode plate. At this time, the foreign matter that can be electrostatically attracted, such as hair, mixed into the object to be processed on the belt conveyor is attracted to the charged electrode plate, floats, and adheres to the adhesive surface of the adhesive tape. The adhered foreign substances are maintained in a firmly adhered state even without static electricity due to the viscosity of the adhesive tape, and after the adhesive tape is wound, it is sandwiched between the winding layers of the adhesive tape. Foreign matter once adhered to the surface does not separate from the adhesive tape. The workpiece and the belt conveyor that have passed under the charged electrode plate are discharged by the discharging electrode after passing through the winding-side guide roller.

[0009]

Next, embodiments of the present invention will be described in detail with reference to the drawings.

In FIG. 1, this charged foreign matter collecting apparatus A
Before packing a large number of objects to be processed, for example, dried vegetables and other foods into bags and transporting them to a product, the foreign substances such as hair mixed in the foods (adsorbed by static electricity) are conveyed by the belt conveyor 1. That can be removed by static electricity.

The foreign substance collecting apparatus A uses a charged electrode plate 3 which is a metal flat plate as shown in FIG. 2 as an electrode for electrostatically attracting foreign substances. The charging electrode plate 3 has a rectangular shape that is long in the width direction of the belt conveyor 1 and has a required width in the length direction (conveying direction) of the belt conveyor 1, and is disposed above and in parallel with the belt conveyor 1. ing. In addition, a disposable adhesive tape 4 is used as foreign matter capturing means for capturing foreign matter that is attracted by static electricity, and a dispensing reel 5 that supports a tape roll 4a around which the adhesive tape 4 is wound, and a take-up reel 6 that winds up. It is supported in parallel with the frame 7.

As shown in FIGS. 3 and 4, the reel 5 is detachable from the frame 7 together with the tape roll 4a. The take-up reel 6 is manually rotated by a handle 8 provided at one end of the shaft. The frame 7 has a guide roller 9 on the pay-out reel 5 side behind the charging electrode plate 3 (the conveying direction of the belt conveyor 1 is forward), and a front side of the charging electrode plate 3 on the winding roll 6 side. The handle 8 on which the guide rollers 10 are respectively supported is rotated to rotate the adhesive tape 4 to take up the adhesive reel 4.
When the adhesive tape 4 is wound, the adhesive tape 4 is paid out from the pay-out reel 5, is guided by the guide roller 9 with its adhesive surface facing downward, travels while sliding on the lower surface of the charging electrode plate 3, and is further guided by the guide roller 10. Then, it is taken up on the take-up reel 6.

As shown in FIG. 2, the charged electrode plate 3 can be adjusted in height at a plurality of places by an electrode plate height adjusting mechanism, that is, by an insulating boss 11 and a height adjusting screw 12 on an erecting plate 13. It is installed vertically. The charging electrode plate 3 is connected to a DC charging high voltage power supply 15 using a power connection terminal 14 provided at one end thereof, and a voltage of, for example, several tens of KV is applied by the charging high voltage power supply 15. Charge.

A precharging electrode 23 to which a high voltage having a polarity opposite to the charging polarity of the charging electrode plate 3 is applied by a precharging high voltage power supply 24 behind the feeding side guide roller 9.
Is arranged. Further, a static elimination electrode 17 for mainly performing static elimination of the belt conveyor 1 after the processing by the foreign matter collection device A is disposed in front of the winding side guide roller 10. A positive / negative alternating voltage or an AC voltage is applied to the charge removing electrode 17 from a charge removing high voltage power supply 18.

In such an apparatus, the high-voltage power supply 1
5, a high voltage of DC is applied to the charging electrode plate 3 and the adhesive tape 4 is wound up by the winding reel 6 as needed.
Behind the precharging electrode 23, the precharging is performed by the precharging electrode 23 to a polarity opposite to the charging polarity of the charging electrode plate 3, so that foreign matter that can be attracted by static electricity such as hair mixed in the food is charged. 3 is sucked and floats, and the adhesive tape 4
Adheres to the adhesive surface of The adhered foreign substance is maintained in a firmly adhered state without relying on static electricity due to the viscosity of the adhesive tape 4. After the adhesive tape 4 is wound, it is sandwiched between the winding layers of the adhesive tape 4. Foreign matter once adhered to the adhesive surface of the tape 4 does not separate from the adhesive tape 4, and can be discarded together with the adhesive tape 4 if the adhesive tape 4 is removed from the take-up reel 6. The food and the belt conveyor 1 that have passed under the charging electrode plate 3 pass through the winding-side guide roller 10 and are neutralized by the neutralizing electrode 17.

[0016]

As described above, according to the present invention, foreign matter such as hair mixed in a dried food or the like is attached to a disposable adhesive tape by electrostatic suction and discarded together with the adhesive tape. Foreign substances can be removed and collected more easily than the conventional technology, and no special cleaning work is required.
It is more economical and workable than before.

The height of the charged electrode plate with respect to the belt conveyor can be easily adjusted by adjusting screws, and at the same time, the height of the adhesive tape can be adjusted.

Since a large number of workpieces are pre-charged to a polarity opposite to the polarity charged by the charged electrode plate, a suction force of a different polarity can be used, thereby increasing the attraction force. As a result, the voltage applied to the charging electrode plate can be set low. For example, when removing hair from a very light article, if the voltage applied to the charged electrode plate is high, even the article will be adsorbed, but by suppressing the applied voltage to the charged electrode plate, only the hair will be removed. Be able to adsorb.

Immediately after removing foreign substances such as hair, the belt conveyor and the food and the like thereon are neutralized. When the food and the like are dropped from the belt conveyor, the food and the like remain on the belt conveyor due to static electricity. Never be.

[Brief description of the drawings]

FIG. 1 is a schematic diagram of an embodiment of the present invention.

FIG. 2 is a perspective view showing a support structure of the charging electrode plate in the above.

FIG. 3 is a side view showing the embodiment of FIG. 1 somewhat more specifically;

FIG. 4 is a plan view of the same.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Belt conveyor 3 Charging electrode plate 4 Adhesive tape 4a Tape roll 5 Feeding reel 6 Take-up reel 9 Feeding side guide roller 10 Winding side guide roller 11 Insulating boss 12 Adjusting screw 13 Bridge plate 17 Electrostatic discharge electrode 18 High voltage power supply for static elimination 19 charging electrode plate 23 pre-charging electrode 24 high voltage power supply for pre-charging

Claims (1)

(57) [Claims] 1. A charging type foreign matter collecting apparatus for adsorbing and collecting foreign matter such as hair from a large number of objects to be processed conveyed on a belt conveyor by static electricity, wherein a high voltage of direct current is supplied from a high voltage power supply for charging. The charging electrode plate to which the voltage is applied is suspended vertically above the erection plate with an adjusting screw above the belt conveyer, and the adhesive tape runs by slidingly contacting the lower surface of the charging electrode plate. In order to dispose, on one side with respect to the charged electrode plate, a feeding reel that supports a tape roll of the adhesive tape, and a winding reel that winds the adhesive tape on the other side, respectively,
The adhesive tape is guided by the feeding-side guide roller and the winding-side guide roller.The conveying direction by the belt conveyor is directed forward, and the charging is performed by the preliminary charging high-voltage power supply behind the feeding-side guide roller. A pre-charging electrode to which a high voltage having a polarity opposite to the polarity charged by the electrode plate is applied. A high-voltage power supply for static elimination is provided forward of the winding-side guide roller with the conveyance direction by the belt conveyor facing forward. And a charge removing electrode to which a high voltage alternating with a positive or negative voltage or an AC high voltage is applied.