JPH03151086A - Roller screening machine - Google Patents

Abstract

PURPOSE:To lessen the manpower for operations by arraying plural pieces of assemblies, each disposed alternately with large-diameter rollers and small- diameter rollers on the same shaft, in parallel and disposing these assemblies in such a manner that the rollers of the adjacent shafts array zigzag. CONSTITUTION:The large-diameter rollers 2 and the small-diameter rollers 3 are alternately disposed perpendicularly to a frame 1 and are disposed zigzag in such a manner that the large-diameter rollers 2 are positioned alongside the small-diameter rollers 3 of the adjacent parallel shafts. The large-diameter rollers 2 are formed to such a shape that the angles on the outer periphery are beveled or round chamfered to assure the smooth flow of the materials to be screened or to a double conical shape. The materials to be screened are arrayed orderly in the direction perpendicular to the roller shafts by the large- diameter rollers.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a size sorting machine for separating elongated objects by length.

Conventionally, methods for sorting long and thin objects include (a) a manual method, (b) a method by vibrating or rotating a perforated net, and (c) a method by vibrating a comb-teeth net. .

However, with conventional methods, (a) has low working ability and accuracy varies depending on the person, increasing labor costs, (b) has better ability and accuracy than a single person, but the other method is (c)
) has good performance and accuracy, but the net is clogged with objects to be sorted, which requires constant removal work, and the vibrations make a lot of noise, leading to a deterioration of the working environment.

The purpose of the present invention is to save labor in this sorting work, improve performance and accuracy, eliminate clogging of objects to be sorted, provide a work environment with less noise, and provide products with high added value.

In order to achieve the above object, the sorting machine of the present invention uses the rotation of rollers as a means of feeding the objects to be sorted, and forms grooves with a large diameter roller and a small diameter roller between them, and uses the rotation of the rollers in the same direction. In addition, in claim 3, the pitch between the roller axes is extremely short, and adjacent large-diameter rollers are arranged so as to slightly overlap each other.

If the materials to be sorted are fed into the sorting machine configured as above in a longitudinal direction perpendicular to the roller axis, they will be forcibly sent downstream by the rotation of the rollers, and large rollers will move in the direction of movement. Therefore, overlapping objects to be sorted are loosened, and objects shorter than twice the pitch between the roller axes are used as a reference, and all objects shorter than that fall down, and objects longer than that are rolled to the end on the rollers. go. Further, according to claim 3, since the large diameter roller overlaps the large diameter roller of the adjacent shaft,
Even if objects to be sorted are casually thrown in without considering the orientation, even objects that are oriented parallel to the roller axis will not fall, and will be aligned perpendicular to the roller axis by the large diameter roller and will be sorted smoothly. .

Embodiments of the present invention will be described below with reference to the drawings.

': In Figure 51, the large-diameter rollers (2) and small-diameter rollers (3) are alternated so that they are perpendicular to the frame (1), and the large-diameter roller is placed next to the small-diameter roller (3) with the adjacent parallel shaft. Place them in a staggered manner so that (2) comes. The shape of this large-diameter roller (2) is preferably such that the outer periphery corner is chamfered diagonally or rounded, or shaped like the bead of an abacus so that the objects to be sorted can flow smoothly.

In Figure 2, a sprocket (5) is attached to each roller shaft (4), connected to the sprocket (7) attached to the motor (6) with a chain (8), and the roller shafts (4) are moved in the same direction. Rotate. In this case, the same applies to pulleys and belts.

Figure 3 shows a product in which a large diameter roller and a small diameter roller are integrally molded to reduce costs.

In Figure 4, objects to be sorted whose half of the total length (that is, the length from the end to the center of gravity) is equal to or greater than the pitch between the roller axes ride the rollers one after another and flow without falling, but the roller axis Since musings that are slightly shorter than the interspace pitch fall downward, it is possible to sort by length. At this time, depending on the material to be sorted, it may be better to make the downstream side slightly more upwardly angled than the upstream side.

Figure 5 shows that when the pitch between the roller axes is extremely short and the large diameter rollers are made to overlap with the adjacent shafts, the objects to be sorted that are parallel to the roller axes can be swept away by the large diameter rollers without falling. , aligned perpendicular to the roller axis. In addition, two or more overlapping objects are loosened by the step between the large and small diameter rollers, and are aligned one by one in a direction perpendicular to the roller axis, forming an alignment section for smooth sorting.

In FIG. 6, the pitch between the roller axes is made smaller on the upstream side and larger on the downstream side, which has the advantage that the sorting reference point can be changed freely depending on the position of the lower hopper.

In FIG. 7, if an object with a large pitch between roller axes is placed on the upper side and an object with a small roller axis pitch is placed on the bottom side, a sorting machine with slightly better performance and accuracy than the case of FIG. 5 can be obtained.

The roller sorter configured as described above provides high accuracy and high performance in sorting long and thin objects without clogging, and since the rollers are driven at a much slower rotation speed than vibrations etc., it is quiet and works well. It is effective in saving labor, improving the workplace environment, and increasing the added value of products.

[Brief explanation of the drawing]

Figure 1 is a plan view of the roller/sorter, Figure 2 is a side view,
Figure 3 is a plan view of the integrally molded roller, Figure 4 is a side view showing how the objects to be sorted are sorted, Figure 5 is the rollers in the alignment section, Figures 6 and 7 are the arrangement of the rollers. It is a longitudinal cross-sectional view showing an embodiment of the method. l Frame, large diameter opening, small diameter opening, motorho center of gravity

Claims (1)

[Claims] 1. A plurality of large-diameter rollers (2) and small-diameter rollers (3) arranged in parallel on the same axis in an alternating manner so that the rollers on adjacent shafts are arranged in a staggered manner. Roller sorting machines placed in the same direction and rotated in the same direction. 2. The roller sorting machine according to claim 1, wherein the large diameter roller (2) and the small diameter roller (3) are integrally molded. 3. The roller sorting machine according to claim 1 or 2, further comprising a portion where the pitch between the roller axes on the upstream side is extremely short, and a portion where the materials to be sorted are aligned in the flow direction. 4. Claim 1, characterized in that the pitch between roller shafts on the upstream side is shortened, and the pitch between the roller shafts on the downstream side is lengthened.
Or the roller sorting machine according to 2 or 3. 5. Install the frame with rollers on two or more sides, above and below,
4. The roller sorting machine according to claim 1, wherein the upper side has a long pitch between the roller axes, and the lower side has a short pitch between the roller axes.