JP2002018376A - Foreign matter removing device for transfer article - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a foreign matter removing device capable of preventing the foreign matter once removed from a transfer article (e.g. a plastic tray containing processed foods) from being redeposited on the article and capable of being incorporated into a continuous line because the articles are transferred without disturbing the line state. SOLUTION: The foreign matter removing device 18 for removing the foreign matter depositing on the article transferred by a transfer conveyor 5 is provided with a destaticizer 1 to destaticize the article and a suction means for sucking and removing foreign matter from the destaticized article. The suction means is provided with a suction nozzle 2 having a suction port 2a for sucking foreign matter, a suction air imparting mechanism 3 (blower) to generate a suction force in the nozzle and a foreign matter removing filter 13 interposed between the suction nozzle and suction air imparting mechanism.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a foreign substance for removing foreign substances such as plastic debris, hair, dust and the like attached to a transfer product such as a plastic tray or other container for storing processed food such as frozen food. It relates to a removing device.

[0002]

2. Description of the Related Art A conventional dust removing device for transferred goods is disclosed in Japanese Patent Application Laid-Open No. H10-156.
No. 301. The dust removal device described in this publication removes a small amount of dust adhering to the conveyed products conveyed by the conveyor in each process from the necessity of improving the product quality by increasing the definition of various printings and increasing the precision of industrial products. The configuration is provided. This dust removal device is provided with a dust removal box having an open side and an outgoing side of a conveyed product conveyed by a conveyor, a static eliminator disposed on an entrance side in the dust box, and a discharge box disposed on an exit side in the dust box. And an installed dust collector.

[0003] In the above dust removing device, an intake fan arranged to face an intake opening on the side of the rear chamber of the dust removing box sucks clean air from the outside air introducing opening via a filter and flows into the dust removing box. Further, the inflowing clean air is sucked by an exhaust fan arranged facing an exhaust opening on a side surface of the rear side of the dust removal box, and is exhausted through an exhaust hose connected to the exhaust fan. On this occasion,
Dust that is easily separated from the surface of the transferred product due to static elimination rides on the exhaust airflow from the intake opening to the exhaust opening,
Exhausted through the exhaust hose.

[0004]

In the above-mentioned conventional dust removing device, the dust adhering to the transferred product is blown off by the exhaust airflow flowing across the transfer path, and is sucked by the suction device on the opposite side. There is a possibility that foreign matter remaining without being sucked after being adhered to the transferred product. For this reason, it is not possible to use the above-mentioned dust removing device for the purpose of removing foreign matter such as hair attached to a transfer product such as a plastic tray or other container for storing processed food due to sanitary problems. There is an urgent need for an apparatus for removing foreign matter that can be suitably used.

Further, in the above-mentioned conventional dust removing apparatus, static elimination and dust removal are performed while sequentially transferring a plurality of groups of transfer articles arranged on a conveyor. During the dust removal, the exhaust air flow from the intake opening to the exhaust opening is performed. Due to this, there is a possibility that the alignment of the lightly transported product is disturbed. For this reason, it is difficult to incorporate a foreign matter removing step into a continuous line in a configuration such as the above dust removing apparatus.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and prevents a foreign substance once separated from a transferred article from reattaching to the transferred article, and transferring the transferred article without disturbing the alignment of the transferred article. It is an object of the present invention to provide a foreign matter removing device for a transferred product, which can be incorporated into a continuous line by being able to do so.

[0007]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention provides a foreign matter removing device for removing foreign matter attached to a transferred product transferred by a transfer means. The apparatus further includes a static eliminator for performing the operation, and a suction unit for sucking and removing foreign matter from the transferred product after the static elimination process. The suction means includes a suction nozzle having a suction port for sucking the foreign matter, and a suction application for generating a suction force to the suction nozzle. A foreign matter removal device for a transferred product, comprising: a mechanism; and a foreign matter removal filter provided between the suction nozzle and the suction applying mechanism.

According to the apparatus for removing foreign matter from a transferred product of the present invention,
The suction means can efficiently remove the foreign matter adhered to the transferred product after static elimination by suction, and can prevent a problem that the foreign material once separated from the transferred product re-adheres to the transferred product.
In this case, the sucked foreign matter is reliably removed by the foreign matter removing filter and is not returned to the periphery of the transferred product, so that the reattachment of the foreign material to the transferred product can be reliably prevented.

In addition, the apparatus further includes a movement restricting means which is located between the transferred article to be transferred and the suction nozzle and regulates the movement of the transferred article toward the suction nozzle. Inconveniences such as not being transported smoothly can be avoided. The movement restricting means can be constituted by one or more pressing guide members for guiding the transferred article to the downstream side while contacting the transferred article, or can be constituted by one or more narrow conveyors.

[0010] The transfer means preferably includes a transfer belt having a plurality of fins provided at predetermined intervals on a surface on which the transfer article is placed. It is also a preferable embodiment to provide a transfer belt or a transfer chain in which a plurality of rod-shaped members are provided at predetermined intervals on a surface on which a transfer product is placed. In these cases, it is possible to reliably transfer the transferred product while maintaining the posture of the transferred product while sandwiching the transferred product between the fins or the bar-shaped members.

It is preferable to further comprise a pair of conveyors facing each other across the transfer path, which guide the transfer goods to the downstream side while sandwiching the transfer goods from both sides of the transfer path. In this case, the lightweight transfer goods stick to the suction port. Inconvenience such that the transfer is not performed smoothly can be avoided more reliably.

Further, by providing a discharge box for detachably housing the foreign matter removing filter of the suction means,
Maintenance such as replacement of the foreign matter removal filter becomes easy.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a transfer product (plastic tray for storing processed food) according to an embodiment of the present invention.
It is a perspective view which shows the foreign material removal device of FIG. Note that the present invention is not limited to this embodiment.

As shown in FIG. 1, the foreign matter removing device 18 comprises:
An apparatus main body 19 is provided, and a transfer conveyor 5 extending from a front end toward a rear end is provided at a central portion of the apparatus main body 19. The foreign matter removing device 18 further includes the transfer conveyor 5
An ion-blowing type static eliminator 1 disposed on the upstream side of the transfer;
A suction nozzle 2 disposed downstream from the static eliminator 1 for transfer;
Holding conveyor 10 arranged so as to face suction nozzle 2
And a discharge box 14 disposed inside the apparatus main body 19.
And an operation panel 15 disposed on a side surface of the apparatus main body 19, and an intake applying mechanism 3 disposed inside the apparatus main body 19. Specifically, a blower (blower) is used as the intake applying mechanism 3.

The transfer conveyor 5 includes a driven roller 5a disposed on the front end side of the apparatus main body 19 and a driven roller (not shown) disposed on the rear end side, and an insulating roller wound between the two rollers. And an endless belt (transfer belt) 5b made of a body. At the rear end of the apparatus main body 19, a variable speed motor 16 for driving the driving roller is provided. The upstream side of the transfer conveyor 5 is a device (for example, some sort of tray processing device) installed before the foreign matter removing device 18.
You may be connected to.

The static eliminator 1 is disposed above the transfer path,
By spraying positive and negative ions toward the transfer product facing the transfer path, the static electricity charged on the transfer product is removed, and foreign substances attached to the transfer product are easily separated from the transfer product. The static eliminator 1 is set so as to maintain a distance within a predetermined range with respect to the transferred product transferred on the transfer conveyor 5 in order to improve the static elimination effect on the transferred product.

The suction nozzle 2 has a suction port 2a which is long in a direction perpendicular to the transfer path. The suction nozzle 2 is a suction port 2
The suction hose 20 that carries the foreign matter sucked from a is connected to the discharge box 14 via a suction hose 20, and further connected to the blower 3 via a suction hose 21. The suction nozzle 2, the suction hoses 20 and 21, the discharge box 14, and the blower 3 constitute a suction unit that suctions the transferred product that has passed through the static eliminator 1.

In this embodiment, an example in which one suction nozzle 2 is provided will be described. However, the present invention is not limited to this, and two or more suction nozzles 2 may be provided. In that case, for example, instead of the transfer conveyor 5, a plurality of narrow conveyors (not shown) using narrow transfer belts are prepared, and these narrow conveyors are arranged in parallel at a predetermined interval. , The back surface of the transferred product can be suctioned from below by another suction nozzle.

The discharge box 14 accommodates the foreign matter removing filter 13 in a detachable manner therein. An opening / closing door (not shown) for opening / closing the inside of the box is provided on a side surface of the apparatus main body 19. Is provided. Maintenance can be performed easily, for example, by replacing the internal foreign matter removing filter 13 with the opening and closing door opened. The blower 3 is provided with a discharge port 3a, and a discharge hose (not shown) is connected to the discharge port 3a.

The inner diameter of the suction hoses 20, 21 is φ35-5.
The total length of the suction hoses 20 and 21 to 0 mm is 25
It is preferable that each is set within 00 mm. The inner diameter of the discharge hose communicating with the discharge port 3a is φ4.
It is preferable that the length of the discharge hose is set within 0 to 65 mm and the length of the discharge hose is set within 2500 mm. In these cases,
Optimal suction force can be applied to the suction port 2a.

A pair of holding conveyors 10 are arranged so as to be opposed to each other with a transfer path on the transfer conveyor 5 therebetween, and sandwich a transfer product transferred below the suction port 2a by the transfer conveyor 5 from right and left. In this state, it is smoothly transferred to the downstream side of the transfer. One of the two holding conveyors 10 includes a pair of rollers 10a arranged apart from each other along the extending direction of the transfer conveyor 5, and an endless belt 10b wound between the two rollers 10a.

The rollers 10a are respectively connected to the apparatus main body 19
Are connected to the respective rotating shafts of two variable speed motors 17 built in. A pressing guide member (movement restricting means) 4 which is located between the transfer article to be transferred on the transfer path and the suction port 2a and restricts the transfer of the transfer article toward the suction port 2a.
Extend along the transfer path. Holding conveyor 10
The other has the same configuration as the one, but the rotation direction of the other pair of rollers is opposite to the rotation direction of the roller 10a on the other.

The holding conveyor 10 is provided as necessary in order to maintain the posture of the conveyed goods transferred by the transfer conveyer 5 at the time of suction more appropriately.
In other words, when the transferred product passes below the suction port 2a, the transferred product may be moved right and left by the holding guide member 4 alone when the transferred product sticks to the suction port 2 or the alignment state thereof is disturbed. The above-mentioned holding conveyer 10 that passes under the suction port 2a while being sandwiched from the above is added.

When the operation panel 15 is operated by an operator, the operation of the static eliminator 1, the transfer conveyor 5, the holding conveyor 10, and the blower 3 is started / stopped, or
The output, speed, rotation speed, etc. are adjusted.

In the foreign matter removing device 18, the wind speed at the suction port 2a becomes 20 to 40 m / s, and the output of the blower 3 becomes 2.2 to 40 m / s.
When the driving pulse frequency for blower driving is
It is preferable that each transfer speed of the transfer conveyor 5 and the holding conveyor 10 is set to 5 to 15 m / s at 0 to 70 Hz. In these cases, the optimum suction force is applied to the suction port 2a.
Can be acted upon.

FIG. 2 shows a preferred shape of the suction nozzle 2 in this embodiment, and FIG. 2 (a) is a front view,
(B) is a side view. As shown in FIGS. 2A and 2B, the suction nozzle 2 has a trapezoidal shape in front view and side view, and the trapezoidal upper base A in front view is 35 to 5.
0 mm, the lower base B is set to 100 to 200 mm, the angle C between both sides connecting the upper base A and the lower base B and the lower base B is set to 20 to 45 °, respectively, and the trapezoidal upper base in side view is set. It is preferable that D is set to 35 to 50 mm and the lower base E is set to 5 to 10 mm. By setting the values in these ranges, it is possible to obtain the suction nozzle 2 having an optimum configuration for giving uniform suction to the transferred articles to be transferred and for effectively removing attached foreign matter.

Next, the foreign matter removing apparatus 1 according to the embodiment of the present invention
8 will be described with reference to FIG. First, when transfer articles such as trays are sequentially placed at the delivery position at the front end of the transfer conveyor 5, the transfer articles are transferred toward the static eliminator 1 by the rotation of the transfer conveyor 5, and pass below the static eliminator 1. In doing so, positive and negative ions are sprayed from the static eliminator 1. As a result, the static electricity charged on the transferred product is removed, so that the foreign substances adhering to the transferred product due to the static electricity are easily peeled off.

Next, the conveyed product further conveyed to the downstream side by the conveyer 5 passes below the suction port 2a while being pressed from the left and right by the pair of holding conveyers 10. Thereby, the transferred product is transferred while maintaining a predetermined arrangement (posture) against the suction force received from the suction port 2a. When the holding conveyor 10 is not provided as necessary, even if a transfer product that receives the intake air from the suction port 2a rises, the transfer product is smoothly prevented from being sucked into the suction port 2a by the holding guide member 4. Is transferred to

At the time of the above suction, the foreign substances adhering to the transferred product are neutralized and are easily separated from the surface of the transferred product, so that they are easily sucked and removed by receiving the suction from the suction port 2a. The sucked foreign matter is carried from the suction port 2a to the discharge box 14 via the suction hose 20, where it is removed by the foreign matter removing filter 13. The suction air after removing the foreign matter further passes through the suction hose 21 and from the discharge port 3a of the blower 3 through the discharge hose (not shown).
9 is exhausted to the outside.

As described above, in the foreign matter removing apparatus 18 according to the present embodiment, the suction means efficiently sucks the foreign matter having adhered to the transferred product after static elimination, and the separated foreign matter adheres again to the transferred product. Such inconveniences can be reliably prevented, and the products can be transferred without disturbing the alignment of the transferred products, so that they can be easily incorporated into a continuous line. Furthermore, the need for an exhaust airflow that traverses the transfer path from the intake opening to the exhaust opening as in a conventional dust removal device is eliminated, so that a dust removal box having a front chamber for static elimination and a rear chamber for dust removal is provided. This eliminates the necessity, simplifies the configuration of the device, and makes it possible to reduce the size and cost of the device. Moreover, since the static elimination part and the foreign matter suction part can be configured to be small and inexpensive as the static eliminator 1 and the suction nozzle 2, respectively, the static elimination part and the suction nozzle 2 can be incorporated into the existing conveyor part, or can be configured as the foreign matter removal device 18 for a single transfer product. You can also.

In the present embodiment, the endless belt 5b of the transfer conveyor 5 has a flat shape. However, the present invention is not limited to this shape, and may have the following shape. That is, as shown in FIG. 3, it is possible to configure as an endless belt (transfer belt) 5b provided with a plurality of fins 6 made of an insulator at predetermined intervals on a transfer surface on which the transfer product is placed. Alternatively, as shown in FIG. 4, it is also possible to use a transfer chain or a belt 9 provided with a plurality of rod-shaped members 8 made of an insulator at predetermined intervals on a transfer surface on which a transfer product is placed. In these cases, it is possible to reliably transfer the transferred product while maintaining the posture of the transferred product while sandwiching the transferred product between the fins 6 or the rod-shaped members 8.

Further, as shown in FIG. 5, by arranging at least two narrow conveyors 11 arranged in parallel in place of the holding guide member 4, the suction port 2a for the lightweight transfer product is provided.
It becomes possible to transfer more smoothly, while suppressing sticking to the surface. The narrow conveyor 11 can be configured such that a narrow flat belt 11a made of an insulator is wound between the rollers 11b and 11c. Or flat belt 1
Instead of 1a, a narrow cross-section circular belt can be used. In addition, the narrow conveyor 11 having such a configuration can be disposed below the transfer path, and can be replaced with the transfer conveyor 5.

[0033]

As described above, according to the present invention, it is possible to prevent inconveniences such as foreign substances once separated from a transferred article from reattaching to the transferred article and to transfer the transferred article without disturbing the alignment state of the transferred article. It is possible to provide a foreign matter removing device for a transferred product that can be incorporated into a continuous line.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an apparatus for removing foreign matter from a transferred product according to an embodiment of the present invention.

FIG. 2 shows an example of a suction nozzle according to the embodiment;
(A) is a front view, (b) is a side view.

FIG. 3 is a perspective view showing an endless belt having fins.

FIG. 4 is a perspective view showing a transfer chain having a rod-shaped member.

FIG. 5 is a perspective view showing an example of a narrow conveyor.

[Explanation of symbols]

 1: static eliminator 2: suction nozzle 2a: suction port 3: suction applying mechanism 3a: discharge port 4: pressing guide member 5, 10: conveyor 5a: driven roller 5b: endless belt 6: fin 8: rod member 9: transfer Chain 10a, 11b, 11c: Roller 10b: Endless belt 11: Narrow conveyor 11a: Flat belt 13: Foreign matter removing filter 14: Discharge box 15: Operation panel 16, 17: Motor 18: Foreign matter removing device 19 for transferred product : Device body 20, 21: Suction hose

Claims (8)

[Claims] 1. A foreign matter removing device for removing foreign matter adhering to a conveyed product transferred by a transfer means, comprising: a static eliminator for performing a charge elimination process on the transferred product; Suction means for removing, wherein the suction means is provided between the suction nozzle and the suction suction mechanism, a suction nozzle having a suction port for sucking foreign matter, a suction applying mechanism for generating a suction force to the suction nozzle. And a foreign matter removing filter for a transferred product. 2. The foreign matter removing device for a transferred product according to claim 1, further comprising a movement restricting unit that is located between the transferred product to be transferred and the suction nozzle and that controls the movement of the transferred product toward the suction nozzle. . 3. The foreign matter removal device for a transferred product according to claim 2, wherein the movement restricting means includes a pressing guide member that guides the transferred product to the downstream side while contacting the transferred product. 4. The foreign matter removing device for a transferred product according to claim 2, wherein the movement restricting means includes a narrow conveyor that guides the transferred product downstream while contacting the transferred product. 5. The foreign matter removing device according to claim 1, wherein the transfer means includes a transfer belt having a plurality of fins provided at predetermined intervals on a surface on which the transferred product is placed. 6. The transfer product according to claim 1, wherein the transfer means includes a transfer belt or a transfer chain having a plurality of rod-shaped members provided at predetermined intervals on a surface on which the transfer product is mounted. Foreign matter removal device. 7. The apparatus according to claim 1, further comprising a pair of holding conveyors facing each other across the transfer path and guiding the transfer goods to the downstream side while holding the transfer goods from both sides of the transfer path. Foreign matter removal device for transferred products. 8. The apparatus for removing foreign matter from a conveyed product according to claim 1, further comprising a discharge box for detachably storing a foreign matter removing filter.