JP2630927B2 - Chutes for feeding conveyed objects in pipe conveyors - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shape of a chute for supplying a conveyed object to a pipe conveyor.

[0002]

2. Description of the Related Art FIGS. 7 to 11 show a conventional pipe conveyor and a chute for supplying a conveyed object to the pipe conveyor.

The end portions of the endless belt-shaped transport belt (1), which are developed into flat plates at the front and rear ends, are wound around a right front roller (2) and a left rear roller (3) in FIG. By driving the front roller (2) by a driving device (not shown), the transport belt (1) is circulated in the arrow direction.

A first rounding frame (4) and a second rounding frame (5) are provided near each of the front and rear rollers (2) and (3) in order from the roller (2) and (3). A large number of shape retaining frames (6) are arranged between the front and rear second rounding frames (5) (5).

[0005] As shown in Figs. 9 and 10, three rounding rollers (7) are arranged on the upper portion of the first rounding frame (4) in a U-shape when viewed from the front. At the top of the round frame (5)
Three rounding rollers (7) are arranged orthogonal to each other so as to form a U-shape in a front view.

At the lower part of each rounding frame (4) (5), 3
Book rounding rollers (7) are arranged above and beneath them. At the top and bottom of each shape retaining frame (6), as shown in FIG.
Circular window holes (8) through which (1) can pass are cut out, and each window hole
A plurality of shape keeping rollers (9) are annularly disposed around (8).

As shown in FIGS. 7, 9 and 10, the first roller (6) passes from the rear roller (3) through the first and second rounding frames (4) and (5). ), The conveyor belt (1) in a flat state is gradually rolled into a pipe.

Above the starting end (1a) of the transport belt (1) on the outward path, a hopper (10) having a lower part in the form of a funnel is arranged, and the hopper (10) is connected to the lower end of the hopper (10). From the tip opening of the chute (11), which gradually becomes smaller as it goes,
The transported object (12) in the hopper (10) is supplied onto the transport belt (1) that is being rolled.

The conveyor belt (1) is rolled up in a pipe shape in a state of wrapping the object (12), passes through a window (8) at the upper part of each shape retaining frame (6), and It is unfolded when the roller (2) is run from above, and after the conveyed object (12) is put into the receiving hopper (13), it is again rounded into a pipe shape, and each shape retaining frame (6)
And circulates back to the rear roller (3).

[0010]

In the pipe conveyor as described above, the conveyed object is conveyed while being wrapped in a pipe shape by the conveyer belt (1). In the transferred object (12), the transfer belt
Long objects such as wood pieces longer than the inner diameter of the pipe-shaped part (1) (1
2a) (see FIG. 11) and this long object (12
If a) is inclined or perpendicular to the traveling direction of the conveyor belt (1), the long object (1) is rolled when the conveyor belt (1) is rolled.
2a) is caught in the middle of the transport belt (1) to be rolled, and may damage the transport belt (1) or
It may prevent (1) from passing through the window (8).

In order to prevent such a risk, as described above, the conventional chute (11) has a gradually decreasing diameter toward the front end, and the inside diameter of the front end opening (11a) is rounded by rounding the conveyor belt (1). Longer than the inner diameter when
(12a) is not supplied in a state of being inclined or perpendicular to the running direction of the conveyor belt (1).

However, as shown in FIG. 11, the diameter of the tip of the conventional chute (11) is gradually reduced uniformly left and right along the center axis (L). As shown by the line, while the long object (12a) passes through the chute (11), both ends of the long object (12a) are inclined inwardly toward each other toward the tip of the chute (11). At the same time, and there is a risk of catching in the middle of the shoot (11).

[0013] As described above, a long object is in the middle of the chute (11).
When (12a) is trapped, the transported object (12)
The other solid lump therein is gradually deposited, and the chute (11) is clogged.

An object of the present invention is to provide an object-feeding chute in a pipe conveyor which solves such a problem.

[0015]

According to the present invention, an object of the present invention is to roll a large portion of an endless belt-like conveyor belt into a pipe shape, and develop a flat portion at both front and rear ends thereof into a front roller and a rear roller. In order to supply the conveyed object to the start end of the forward path of the transport belt, in a pipe conveyor that wraps the conveyed object and continuously conveys the transported object at the start end of the outward path of the transport belt, A chute, which is connected to the lower end of the hopper above the conveyor belt, and which is connected to the lower end of the slanted section and which is inclined forward and downward; A horizontal portion extending horizontally toward the front end, and having a cylindrical horizontal portion having an open front end face, and the inner diameter of the horizontal portion is gradually reduced toward the front, and is orthogonal to the central axis of the entire horizontal portion. Cross section of each part By bending the center line of the inner diameter connecting the centers of the diameters in a mountain shape to one side with respect to the center axis, the inclined surfaces inclined toward the tip on both side walls of the horizontal portion are positioned in the front-rear direction with respect to each other. The problem can be solved by forming it in a shifted manner.

[0016]

1 to 5 show an embodiment of the present invention. The same members as those of the above-described conventional members are denoted by the same reference numerals, and detailed description thereof will be omitted.

In the present embodiment, a chute (14) is provided with a straight cylindrical inclined portion (15) inclined forward and downward from an upper end connected to the lower end of the hopper (10), and an inclined portion (15). A horizontal portion (16) having a circular cross section extending substantially forward from the lower end of the conveyor belt (1) substantially in parallel with the conveyor belt (1), and the horizontal portion (16).
The inner diameter of the cross section of each section orthogonal to the central axis (L) of the entire horizontal portion (16) and the center of the inner diameter (L ') connecting the center of the inner diameter of L), the side walls (16a) (16
b) Inclined surface inclined inward toward the tip formed in
(17) The positions of (18) are shifted in the front-back direction.

The portions other than the inclined surfaces (17) and (18) of the left and right side walls (16a) and (16b) of the horizontal portion (16) are substantially parallel to the central axis (L).

The inner diameter of the opening (16c) at the tip of the chute (14) is smaller than the inner diameter of the conveyor belt (1) when it is rolled into a pipe.

In this embodiment, as shown by an imaginary line in FIG. 4, the length of the chute (14) is slightly shorter than the distance between the left and right side walls (16a) and (16b) at the rear of the horizontal portion (16). Long object (12a) is oriented in the direction perpendicular to the central axis (L),
It is also assumed that the central portion is sent on the central axis (L).

Then, the left end of the long object (12a) first comes into contact with the inclined surface (17) on the left side wall (16a).
Is inclined inward toward the front, so that the resistance of this contact portion is greater than the right end of the long object (12a).

Accordingly, the long object (12a) is rotated forward around the left end with the flow of the object (12), and the inclination angle with respect to the center axis (L) gradually increases from 90 °. It will be small.

Next, the right end of the long object (12a) is also
At this time, since the inclination angle of the long object (12a) is considerably smaller than 90 °, the right end of the long object (12a) is Without slipping on the inclined surface (18), the sliding object advances along with the other transported object (12) toward the distal end opening (16c), and the inclination angle of the long object (12a) is further reduced.

When the long object (12a) is supplied onto the conveyor belt (1) from the front end opening (16c), the long object (12a) is substantially parallel to the central axis (L), and It is supplied forward in a state close to the central axis (L).

Therefore, the conveyor belt (1) is prevented from being rounded by the long object (12a), or the conveyor belt (1) is rounded.
(1) The long object (12a) stretches in the diametrical direction, and a hole is made in the conveyor belt (1), or the outer diameter of the conveyor belt (1) becomes locally large, and the conveyor belt There is no risk that the traveling of (1) will be disabled.

As shown by an imaginary line in FIG. 5, a short long object (12a ') is oriented in a direction perpendicular to the central axis (L) and, for example, on the right side wall (16b) side. Proximity, Shoot (14)
When it is sent inside, the long object (12a ') may pass without contacting the inclined surface (17) on the left side wall (16a) side at all.

However, even in this case, when the right end (the lower end in FIG. 5) of the long object (12a) comes into contact with the inclined surface (18) on the right side wall (16b) side, the left end of the long object (12a) is left. The other end rotates forward, the inclination angle with respect to the center axis (L) becomes gradually smaller than 90 °, and becomes almost parallel to the center axis (L) by the time of passing through the tip opening (16c). .

Note that a twig or the like shorter than the width of the tip opening (16c) does not abut on any of the inclined surfaces (17) and (18), and the center opening (16c) is moved from the tip opening (16c) to the center axis (L). It may be supplied onto the conveyor belt (1) while being oriented in the orthogonal direction. The length of such a short one is smaller than the inner diameter of the conveyor belt (1) rolled into a pipe. Therefore, no matter in which direction the paper is supplied, it does not hinder the running of the conveyor belt (1).

The above is the case of a pipe conveyor in which the outer surface of one end of the conveyor belt (1) and the inner surface of the other end are overlapped and rolled into a pipe shape. As shown in FIG.
The present invention is also applied to a pipe conveyor in which the inner surfaces of both side ends of (1 ') are overlapped in a mating shape and rolled into a pipe shape, or a pipe conveyor in which both side edges are simply abutted or brought close to each other. Can be applied.

[0030]

According to the present invention, there is no danger that a long object contained in a conveyed object will be caught in the chute and in the conveyer belt which is gradually rolled. Problems such as clogging of the transported object, damage to the transport belt, and inability to rotate can be solved.

[Brief description of the drawings]

FIG. 1 is a cross-sectional plan view of a main part of a pipe conveyor provided with a chute according to one embodiment of the present invention.

FIG. 2 is also a side view.

FIG. 3 is an enlarged vertical sectional view taken along line AA of FIG. 2;

FIG. 4 is an enlarged vertical sectional view taken along line BB of FIG. 2, showing the operation of the present embodiment.

FIG. 5 is an enlarged vertical sectional view taken along line BB of FIG. 2, showing the operation of the present embodiment.

FIG. 6 is a longitudinal sectional view showing another example of a conveyor belt of a pipe conveyor to which the present invention can be applied.

FIG. 7 is a schematic side view showing an example of a pipe conveyor provided with a conventional chute.

FIG. 8 is an enlarged vertical sectional view taken along line CC of FIG. 7;

FIG. 9 is an enlarged vertical sectional view taken along line DD of FIG. 7;

FIG. 10 is a side view of FIG. 9;

FIG. 11 is an enlarged vertical sectional view taken along line EE in FIG. 10 and is a view for explaining the operation of a conventional chute.

[Explanation of symbols]

 (L) Center axis (L ') Inner diameter center line (1) Conveyor belt (1a) Start end (2) (3) Roller (4) First round frame (5) Second round frame (6) Shape retaining frame ( 7) Rounding roller (8) Window hole (9) Shape keeping roller (10) Hopper (11) Chute (12) Conveyed object (12a) (12a ') Long object (13) Receiving hopper (14) Chute (15) ) Inclined section (16) Horizontal section (16a) (16b) Side wall (16c) Tip opening (17) (18) Inclined surface

Claims (1)

(57) [Claims] 1. An endless belt-like transport belt is largely rolled into a pipe shape, and flat portions at its front and rear ends are circulated around a front roller and a rear roller to circulate therethrough. At the start end of the pipe conveyor, which wraps the object to be conveyed and continuously conveys it,
A chute for supplying a conveyed object to a starting end of a forward path of the conveyor belt, wherein a cylindrical inclination is provided above the conveyor belt, connected to a lower end of the hopper, and inclined forward and downward. And a tubular horizontal portion connected to the lower end of the inclined portion, extending horizontally forward, and having an open front end surface, the inner diameter of the horizontal portion facing forward. By gradually bending the center of the inner diameter of the cross section of each part orthogonal to the center axis of the entire horizontal part, the inner part of the horizontal part is bent in a chevron to one side with respect to the center axis. A chute for feeding a conveyed object in a pipe conveyor, wherein inclined surfaces inclined toward the tip are formed on both side walls so as to be shifted from each other in the front-rear direction.