JPH0717622A - Conveyer device - Google Patents

Abstract

PURPOSE:To provide a conveyer device for stably supplying articles to the central part of a bringing-in port of a mechanical device for performing the post-processes of wrapping, packing boxing, etc., without damaging the articles. CONSTITUTION:An endless conveyer belt 3 wrapped around both ends of a frame 1 to mount and convey articles is provided. Outside endless belts 5 provided in parallel to both sides of the conveyer belt 3 to be driven in the same direction as the conveyer belt 3 are provided. The conveying speed of the outside belts 5 is set to that higher than the conveying speed of the conveyer belt 3.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a conveying device which hangs an endless conveying belt between both ends of a frame and places an article on the conveying belt to convey the article.

[0002]

2. Description of the Related Art In general, a belt conveyor has a long frame having rotary rollers axially supported at both ends thereof, and an endless conveyor belt is hung between the pair of rotary rollers to be transferred onto the conveyor belt. An item, which is an item to be conveyed, is placed and conveyed.

At this time, when the article supplied from the upstream side of the belt conveyor and placed on the conveyor belt is located on the outer edge of the conveyor belt which is deviated from the central portion, the article vibrates or moves during the conveyance. For the purpose of preventing spillage from the conveyor belt of the belt conveyor to the outside due to the pressing of the articles, or to the downstream side of the belt conveyor, which is the entrance of the machinery for post-processing such as packaging, boxing, and packaging. Sometimes it is necessary to bring an item near the center of the belt conveyor for the purpose of guiding the item to the center.

In this case, in the conventional conveying apparatus, for example, by providing guide members inclined from the outer side toward the center in the conveying direction of the article on both sides of the frame, the guide members are positioned at the outer edge portions of the conveying belt. In general, a system is used in which an item to be conveyed is brought into contact along the guide member while being conveyed, and the conveying force gradually guides it to the central portion of the conveyor belt.

[0005]

However, in the above-mentioned conventional apparatus, since the article is guided by guiding it directly to the guide member by the conveying force, the article is guided when it is soft. There was a case where it was damaged or deformed. Further, when the product is made of a sheet-shaped thin product or the like, there is a problem that the product is caught in a gap between the conveyor belt and the guide member and is caught, so that stable transportation cannot be performed.

[0006]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, the present invention provides a carrying device capable of carrying goods stably without damaging the articles, and is hung between both ends of a frame, and An endless conveyor belt for placing and conveying the goods is provided, and endless outer belts arranged in parallel on both sides of the conveyor belt and driven in the same direction as the conveyor belt, and the transfer speed of the outer belt. Is set so that the transfer speed is higher than the transfer speed of the transfer belt.

[0007]

The product located on the outer edge of the belt conveyor, which protrudes on the outer belt, receives the rotational force generated by the speed difference between the transport belt and the outer belt at the bottom of the product and moves it to the inner transport belt. Items that have moved and are already located on the inner conveyor belt will not be able to move to the outer portion of the belt conveyor due to the outer belt being transported at a higher speed than the conveyor belt.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 show a first embodiment of the present invention. A drive roller 2A and a driven roller 2B are rotatably supported on one end of a long frame 1 and the driven belt 2B is composed of an endless flat belt between the rollers 2A and 2B.
The driving force of the motor M1 provided in the lower portion of the frame 1 is transmitted to the drive roller 2A in rotation, and the rotation of the drive roller 2A is transmitted to the driven roller 2B via the conveyance belt 3 so that the conveyance belt 3 is moved. It is rotated and transferred.

Further, a drive roller 4A is provided on one end side of the frame 1 separately from the drive roller 2A, and on the other end side thereof, the driven roller 2B can be rotated separately from the driven roller 2B coaxially with the driven roller 2B. The driven belts 4B, 4B are provided, and outer belts 5, 5 made of endless flat belts narrower than the conveyor belt 3 are provided on both sides of the conveyor belt 3 between the drive roller 4A and the driven rollers 4B, 4B. Is hung around. Then, the driving force of the motor M2 provided in the lower part of the frame 1 is transmitted to the drive roller 4A, and the rotation of the drive roller 4A is transmitted through the outer belts 5 and 5 to the driven roller 4A.
B and 4B are transmitted to the outer belts 5 and 5 to rotate and convey them in the same direction as the conveyor belt 3.

At this time, the rotational speeds of the motors M1 and M2 are set so that the rotational transfer speed of the outer belts 5 and 5 is higher than the rotational transfer speed of the conveyor belt 3.

The width dimensions of the conveyor belt 3 and the outer belt 5 are appropriately selected depending on the size, shape, weight, etc. of the article P to be conveyed. Further, the height of the transport surface of the outer belt 5 is preferably set to be equal to or slightly higher than the height of the transport surface of the transport belt 3.

In this way, the outer belts 5 provided on both outer sides of the transport belt 3 are transported at a speed higher than the transport speed of the transport belt 3, and the transport belt 3 and the outer belt 5 always have a speed difference. The product P supplied in step 1 is continuously transferred. Therefore, the product P supplied to the upstream end (the driven roller side in this embodiment) of the belt conveyor is
Even if the product P is randomly supplied to the conveyor belt 3 at the center of the belt conveyor or scattered on the outer belt 3 side, which is the both sides, the articles P on both sides of the belt conveyor are conveyed. Since the width dimension of the outer belt 5 is designed so as to straddle the belt 3 and the outer belt 5, the product P is caused by the speed difference between the transport belt 3 and the outer belt 5 transported at a higher speed than the transport belt 3. The contact surface on the bottom surface of the belt receives a rotational force from both outsides of the belt conveyor toward the central portion. Then,
The article P that has received this rotational force moves from the outer belt 5 side to the conveyor belt 3 side with the conveyance of the belt conveyor, and finally transfers onto the conveyor belt 5 at the central portion of the belt conveyor, and downstream of the belt conveyor. At the side end portion, the conveyor belt 3 conveys and carries out.

On the other hand, the article P already supplied onto the conveyor belt 3 which is the central conveyance surface at the upstream end of the belt conveyor protrudes to both outer sides due to vibration or pressing of the articles during the conveyance. Even so, it becomes impossible to move to the outer side of the belt conveyor by the outer belt 5 that is transferred at a higher speed than the transport belt 3.

The article P thus conveyed is guided to the conveyor belt 3 in the central portion where there is no risk of falling from both side edges of the belt conveyor and is conveyed in a stable state. Also,
At the downstream end of the belt conveyor, since the goods P are carried out on the conveyor belt 3 located at the central part, the goods P are carried to the central part of the carry-in port of a mechanical device (not shown) that performs post-processes such as packaging, packing, and boxing. It is possible to supply P.

3 and 4 show a second embodiment of the present invention. The driven rollers 6 and 7 are rotatably supported at both ends of the frame 1, and a drive roller 8 is provided in a lower portion located between the driven rollers 6 and 7, and the central portion of the drive roller 8 is laterally moved by a predetermined width. And a large-diameter portion 8S is formed so that both side portions of the drive roller 8 gradually increase in diameter from the small-diameter portion 8I toward both outer sides. A plurality of endless belts, which are round belts, are wound between the driven rollers 6 and 7 and the driving roller 8.

The driven rollers 6 and 7 are conveyance driven rollers 6I and 7I corresponding to the conveyance belt 3 composed of a plurality of endless belts wound around the small diameter portion 8I of the drive roller 8, and the driven rollers 6I and 6I. 7I, a plurality of outer driven rollers provided separately from the outer belt 5 composed of a plurality of endless belts wound around a large-diameter portion 8S of the driving roller 8 in which the diameter of the driving roller 8 is sequentially changed. It is composed of 6S and 7S.

As a result, the conveyor belt 3 formed by the endless belt composed of a plurality of round belts wound around the small diameter portion 8I of the drive roller 8 and the conveyor driven rollers 6I and 7I, and the drive roller 8 respectively. The outer belt 5 formed by an endless belt composed of a large-diameter portion 8S having different diameters and a plurality of round belts wound around the outer driven rollers 6S, 7S is transferred at independent and different transfer speeds. It has become.

That is, when the drive roller 8 is rotated by the motor M, the transfer speed of the endless belt changes according to the diameter of the drive roller 8, and the transfer speed of the conveyor belt 3 located at the center of the belt conveyor. The outer belts 5 provided on both sides of the outer belt 5 are transferred at a higher speed than
Further, the outer belt 5 is configured to be sequentially transferred from the central portion toward both outer portions at high speed.

Even if the articles P are randomly introduced at the upstream end of the belt conveyor by the above-mentioned structure, the articles P located on both outer sides of the belt conveyor are moved from the central portion to both outer sides in the conveying process. The outer belts 5 which are sequentially transferred at high speed are guided from both outer parts toward the central part, and are finally located in the central part before reaching the downstream end part of the belt conveyor It moves onto the belt 10 and is stably conveyed by the conveyor belt 3.

FIG. 5 shows a third embodiment of the present invention. Outer belts 5 that are driven in the same direction as the conveyor belt 3 are provided on both sides of the conveyor belt 3 on which the articles P are placed and conveyed, and the conveyor surface of the outer belt 5 is located inside the conveyor belt 3. The transfer speed of the outer belt 5 is set to be higher than the transfer speed of the conveyor belt 3.

With the above structure, as in the above-described embodiment,
The articles P located on both outer sides of the belt conveyor due to the outer belt 5 being transported at a higher speed than the conveyor belt 3.
However, during the transfer process, the conveyor belt 3 in the central portion is gradually
In addition to the action of being guided to the conveyor belt 3, the inclined surface of the outer belt 5 having the conveyor surface inclined inward with respect to the conveyor surface of the conveyor belt 3 causes the article P to drop on the conveyor belt 3 in the central portion by its own weight. It also has the function of being incorporated.

In the above-mentioned embodiments, as means for setting the outer belt at a speed higher than the transfer speed of the conveyor belt, two motors are provided and these motors are set to be driven separately. Alternatively, one motor is provided, and drive rollers having different diameters are provided, and endless belts are respectively wound around the drive rollers. For example, a gear speed reduction mechanism is provided so that the transfer speed of the outer belt is increased. The transfer speed may be set higher than the transfer speed. Also, as for the endless belt used as the conveyor belt or the outer belt, depending on the type, a flat belt, a round belt, a V-belt, or a material to be used is appropriately selected. Is. Further, the structures of the above-described embodiments may be combined and configured.

[0023]

As described above, the present invention provides an endless conveyor belt which is hung between both end portions of a frame and on which an article is placed and conveyed, and the conveyor belts arranged side by side on the conveyor belt. Since an endless outer belt that is driven in the same direction as that of the outer belt is provided and the transfer speed of the outer belt is set to be higher than the transfer speed of the conveyor belt, the goods to be supplied are conveyed in the conveying process. In the above, it gradually moves to the conveyor belt in the central part inside the belt conveyor without providing any guide member, and it becomes impossible to move the goods on the conveyor belt to the outside part in the belt conveyor. It is conveyed in a stable state on the conveyor belt of the section. Therefore, it prevents the situation where the goods move to the outside of the belt conveyor and fall due to the vibration of the belt conveyor or the pressing of the goods during the transportation, and after the packaging, packing, boxing, etc. without damaging the goods. It is possible to supply the goods to the central portion of the carry-in entrance of the mechanical device that performs the process.

[Brief description of drawings]

FIG. 1 is a perspective view showing a first embodiment of the present invention.

FIG. 2 is a plan view showing a first embodiment of the present invention.

FIG. 3 is a plan view showing a second embodiment of the present invention.

FIG. 4 is a schematic side view showing a second embodiment of the present invention.

FIG. 5 is a schematic front view showing a third embodiment of the present invention.

[Explanation of symbols]

 1 frame 3 conveyor belt 5 outer belt P goods

Claims (1)

[Claims] 1. An endless conveyor belt which is hung between both ends of a frame and which places and conveys an article is provided, and both end portions of the conveyor belt are provided side by side in the same direction as the conveyor belt. A transporting device, wherein an endless outer belt to be driven is provided, and a transport speed of the outer belt is set so as to be faster than a transport speed of the transport belt.