JPH11139521A - Curved roller conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To freely change the direction of an article by freely controlling the rotation difference between straight rollers without using taper rollers arranged to change the direction of the conveyed article. SOLUTION: An outside conveyance passage 1a and inside conveyance passage 1b are formed with outside rollers 15a and inside rollers 15b made of straight rollers at a curved portion, and the outside rollers 15a and the inside rollers 15b are rotatively driven by hexagon belts 19a, 19b traveled by motors 25a, 25b. Their revolving speeds are controlled at the desired speed difference or at the same high or low speed by the revolving speed control of the motors 25a, 25b, thereby this curve roller conveyor can cope with various conveyance modes.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curve roller conveyor for changing the direction of articles themselves while conveying various articles by a conveyor.

[0002]

2. Description of the Related Art In a collection center and the like, various roller conveyors are frequently used. For example, 56-173
"Curve roller conveyor" disclosed in Japanese Patent Publication No. 512
Has a configuration in which a taper roller and a straight roller are provided so as to change a traveling surface and a traveling direction of a conveyed article. Further, the "conveyed object direction changing apparatus" disclosed in Japanese Patent Application Laid-Open No. 57-22842 is configured to intermittently and flatly arrange a taper roller and a flat roller to change the direction of an article. It was done. However, the curve roller conveyor and the device for changing the direction of the transferred object are:
All have the following problems.

[0003]

That is, since the large-diameter portion of the taper roller is disposed on the outside or inside, and the direction of the article is changed by utilizing the speed difference between the inside and outside outer peripheral surfaces, the article is turned. If the transport speed is not constant, the turning direction of the articles will vary. For example, in order to increase the processing capacity by increasing the number of articles conveyed per unit time, the angle of the tapered roller must be changed. Therefore, even if it is desired to change the transport speed of the article according to the working condition, the transport speed cannot be easily changed, which is very inconvenient. Further, two types of taper rollers and straight rollers are required, which increases the types of members and increases the cost, and also complicates the assembly and maintenance of the conveyor.

In addition, in addition to the above-described configuration, a projection is provided on a side surface of an article transport path, and one end of the article being transported is caused to collide with the article.
In other words, there is one that applies a brake to one end of the article to change the direction. However, in this configuration, if the transport speed is increased, the article is damaged.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object the ability to freely control the conveying speed and direction change of an article, and to reduce the number of parts without damaging the article. To provide a roller conveyor.

[0006]

The object of the present invention is to provide a roller group (15) disposed along a curved conveyance path.
a, 15b), power transmission means (19a, 19b) in contact with the lower portion of the roller group to urge each roller to rotate, and drive means (25a, 25) for driving and driving the power transmission means.
b) the roller conveyor (1) comprising:
The roller groups (15a, 15b) are arranged side by side in a plurality of rows, and the power transmission means (19a, 19b) and the drive means (25a, 25b) are provided for each of the roller groups (15a, 15b). Further, the present invention is achieved by a curved roller conveyor (1) characterized in that the drive means (25a, 25b) are individually controlled to independently control the rotation of each of the roller groups (15a, 15b).

The curved roller conveyor individually controls the rotational speed of a plurality of arranged roller groups by controlling the rotational speed of driving means such as a motor. Therefore, when the roller group outside the curved portion is controlled to rotate at a low speed and the inner roller group is controlled to rotate at a high speed, the conveyed article is conveyed while changing its direction from the inside to the outside. The speed difference of the roller group is freely controlled, and the direction of the article can be changed at a conveying speed according to the work situation, so that the processing capacity is increased and the degree of freedom of the work in the distribution process is greatly increased. improves.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, an embodiment of a curve roller conveyor according to the present invention will be described. FIG. 1 is a schematic plan view showing the operation of the curve roller conveyor, FIG. 2 is a partially cutaway plan view showing the configuration of the curve roller conveyor, and FIG. 3 is a side view showing the configuration of the curve roller conveyor. In the description of the embodiment, the basic configuration and operation of the curve roller conveyor will be described with reference to FIG. 1 and then in detail with reference to FIGS. 2 and 3.

The curved roller conveyor 1 changes the direction of the article 5 conveyed on the linear conveyor 3 in the direction of arrow A with respect to the conveying direction, and discharges the article 5 onto the conveyor 7. The turning direction of the article 5 itself is identified by an arrow attached to the center of the article 5. The curved roller conveyor 1 is divided into an inner conveyance path 1a and an outer conveyance path 1b, and changes the direction of the article 5 by controlling the conveyance speeds of the inner conveyance path 1a and the outer conveyance path 1b. I have.

Next, the configuration and the like of the curve roller conveyor 1 will be described in more detail with reference to FIGS. The pair of conveyor frames 11a and 11b and the partition frame 13 disposed between them are curved at a predetermined radius by 90 °, and rotatably support the outer roller 15a and the inner roller 15b. Although the outer roller 15a and the inner roller 15b are partially illustrated on the carry-in side and the carry-out side in FIG. 2 for convenience of explanation, actually, the outer transport path 1a and the inner transport path 1b are substantially equally spaced over the entire surface. , And constitutes a roller group referred to in the present invention. The outer and inner rollers 15a, 15b are all straight rollers, and do not use taper rollers unlike conventional conveyors of this type.

A pressure sheave 17a is provided inside the conveyor frame 11a and below the outer rollers 15a. This is for running a hexagonal belt 19a (power transmission means) that rotationally drives the outer roller 15a, and is arranged in two upper and lower stages as shown in FIG.
A pressure sheave 17b is provided inside the conveyor frame 11b and below the inner roller 15b. This is a hexagonal belt 19b that rotationally drives the inner roller 15b.
(Power transmission means) for traveling.
As shown in FIG. Although the hexagonal belts 19a and 19b are driven with substantially the same configuration, FIG. 3 shows the inside of the conveyor frame 11a, and each member is denoted by the reference numeral corresponding to the outer transport path 1a. It is.

In the outer transport path 1a, the hexagonal belt 1
9a is each pressure sheave 17a, end sheave 21,
The snubber sheave 23 and the drive sheave 27a fixed to the motor 25a (drive means) are endlessly wound around. In addition, the end sheave 21 is located on the outer transport path 1a.
Are arranged on the upstream side and the downstream side of FIG.
Shows one of them. On the other hand, with respect to the inner transport path 1b, a motor 25b (driving means) is provided, and a hexagonal belt 19b having an endless structure similar to that described above is provided between the drive sheave 27b fixed to the motor 25b and each of the press sheaves 17b and end sheave. It is hung around.

The rotation of the outer roller 15a with respect to the outer transport path 1a will be described below. When the motor 25a is driven to rotate the drive sheave 17a counterclockwise in FIG. To travel. Since the side surface of the hexagonal belt 19a is pressed against the lower portion of the outer roller 15a, each outer roller rotates in the Y direction by traveling of the hexagonal belt 19a, and conveys the article 5 in the direction of arrow A. On the other hand, also in the inner conveyance path 1b, by driving the motor 25b, the hexagon belt 19b travels in the same manner as described above, and the inner rollers 15b are rotationally urged to convey the article 5 in the arrow A direction.

In this embodiment, it should be noted that the rotation speeds of the motors 25a and 25b can be individually controlled. That is, when turning the conveyed article 5 90 degrees clockwise as shown in FIG. 1, the motor 25a is controlled to rotate at a low speed and the motor 25b is controlled to rotate at a high speed. As a result, the outer roller 15a is urged to rotate at a low speed, and the inner roller 15b is urged to rotate at a high speed, so that the portion of the article 5 placed on the inner roller 15b precedes. Since the preceding conveyance is continuously performed over the entire area of the curved roller conveyor 1, the article 5 gradually changes its direction from the upstream side to the downstream side, that is, from the conveyor 3 to the conveyor 7,
At the time of turning by 90 °, it is carried out onto the conveyor 7.

The curve roller conveyor 1 includes a motor 2
By controlling the rotation speeds of the rollers 5a and 25b, the rotation speeds of the outer and inner rollers 15a and 15b can be controlled to a high speed and a low speed with a constant difference or at the same rotation speed. Therefore, from the example of the direction change shown in FIG. 1, the article 5 can be conveyed toward the unloading roller 7 while being conveyed onto the conveyor 3 without changing the direction of the article 5 itself, by rotating the motors 25a and 25b. It can be done easily by controlling the speed. In addition, the outer and inner rollers 1
Since the difference between the rotational speeds of the articles 5a and 15b can be easily increased, it is also easy to change the direction of the article 5 with the transport speed of the article 5 increased. As described above, the curved roller conveyor 1 according to the present invention can be used for multiple purposes and does not require a taper roller. Therefore, the number of parts can be reduced, and installation work and maintenance can be simplified. Damage can be prevented beforehand.

[0016]

As described above, in the curved roller conveyor according to the present invention, the rotational speed of a group of rollers arranged in a curved portion is controlled by controlling the rotational speed of a driving means such as a motor, thereby increasing or decreasing the speed difference. The configuration is such that the control is performed in a small, uniform or identical manner. Therefore, if the outer roller group of the curved portion is controlled to rotate at a low speed and the inner roller group is controlled to rotate at a high speed, the conveyed article is conveyed while being turned from the inside to the outside, and the speed difference causes the article to be conveyed. The degree of conversion can be set freely. In addition, articles can be conveyed without being converted due to a difference in rotation speed between the roller groups. Further, even if the transport speed of the article is increased or decreased, the speed difference can be set in accordance with the increased or decreased transport speed, so that the conversion of the articles can be performed without increasing the processing capacity. In addition, since a taper roller is not required, cost can be reduced, and workability during installation and maintenance can be improved.

[Brief description of the drawings]

FIG. 1 is a schematic plan view showing an embodiment of a curve roller conveyor according to the present invention.

FIG. 2 is a partially cutaway plan view showing a configuration of a curve roller conveyor.

FIG. 3 is a side view of a main part showing a configuration of a curve roller conveyor.

[Explanation of symbols]

 1 Curve Roller Conveyor 1a Outer Conveying Path 1b Inner Conveying Path 3,7 Conveyor Frame 5 Article 11a, 11b Conveyor Frame 13 Partition Frame 15a Outer Roller 15b Inner Roller 17a, 17b Pressure Sheave 19a, 19b Hex Belt 21 End Sheave 23 Snubber Sheave 25a Motor 27a, 27b Drive sheave A Article conveying direction X Belt running direction

Claims (1)

[Claims] 1. A group of rollers (15a, 15b) arranged along a curved conveyance path, and power transmission means (19a, 19b) in contact with the lower part of the group of rollers to urge each roller to rotate.
b) and driving means (2) for driving and driving the power transmission means.
5a, 25b) and a curved roller conveyor (1)
In the above, the roller groups (15a, 15b) are arranged side by side in a plurality of rows, and the power transmission means (19a, 19b) and the drive means (25a, 25b) are respectively provided for each of the roller groups (15a, 15b). A curved roller conveyor (1) provided, wherein the drive means (25a, 25b) are individually controlled to independently control the rotation of each of the roller groups (15a, 15b).