JP3130819B2 - Canvas chute - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a chute for articles, and more particularly to a chute structure which can be suitably used as a chute for a sorting conveyor.

[0002]

2. Description of the Related Art A conventional sorting conveyor is connected with a large number of chutes for receiving articles discharged laterally at a sorting position and sliding the articles downward.

FIG. 5 is a perspective view showing an example of a conventional chute connected to a sorting conveyor. A sorting conveyor A is provided with a transport chain C guided by guide rails B and driven endlessly to circulate. A large number of trays D are attached to the upper part of the transport chain C at regular intervals.

Each of the trays D carries an article W on its upper surface in a horizontal position shown by a solid line in FIG. 5 and conveys the article W to a target sorting position. And the articles on the tray D are discharged to the chute E arranged at the sorting position. The bottom plate F of the chute E is
The article W is installed at an angle at which the article W can be lowered, and a lower portion thereof is a horizontal storage section G.

[0005] Side plates H and I and an end plate J that stand upward are connected to the left and right side edges of the bottom plate F and the terminal edge of the bottom plate F, respectively. J prevents the article W sliding down from above from jumping out of the chute E.

In the above-described chute E, the articles W discharged from the tray D of the sorting conveyor A to the chute E are prevented from jumping outward by the side plates H and I on both sides, so that the bottom plate F
It slides down, collides with the lower end plate J, stops, and is temporarily stored on the horizontal storage unit G until the operator takes it out.

[0007]

In the above-described conventional chute for articles, since the bottom plate, both side plates, and the end plate at the lower end of the bottom plate are both made of a steel plate, the article slides down. If the side plate or the end plate collides, the article may be damaged due to the impact, and the surface may be scratched or dented, which may significantly impair the commercial value. The noise was loud and there was a problem in the work environment.

Accordingly, the present invention provides a cushioning mechanism for shocks applied to an article at the time of loading, suppresses an increase in the descent speed when the article is lowered, and prevents damage to the article when the article collides with a side plate or an end plate. An object of the present invention is to provide a chute for articles that can reduce generation of noise.

[0009]

To achieve the above object, a canvas type chute according to the present invention comprises: a chute body having an inclined bottom plate and a pair of side plates rising from right and left side edges of the bottom plate; A sheet-like cushioning body lined on each of the upper surface of the bottom plate of the chute body and the inner surfaces of the pair of side plates, and a canvas covering the surface of the cushioning body are provided. It is preferable that only the peripheral portion of the canvas is fixed to the chute body, and the canvas is in contact with the surface of the buffer at least at the center of the bottom plate.

[0010]

The article put into the canvas-type chute of the present invention from above falls onto the canvas covering the upper part of the bottom plate. At this time, the sheet-like cushioning member between the canvas and the bottom plate causes the article to fall.
The impact of the fall is absorbed, and the noise generated by the fall is also absorbed and damped by the buffer and the canvas.

Also, when an article is dropped obliquely toward one of the left and right side plates of the chute main body, the article hits the canvas covering the inner surface of the side plate and is received. The articles are guided by the cushion on the bottom plate while descending by the cushion between the side plates.

The article slides or rolls down on the surface of the canvas on the bottom plate. At this time, the deformation resistance between the canvas and the cushion at the portion where the article passes, and the resistance between the article and the surface of the canvas. The increase in the speed of the article descending on the canvas surface of the bottom plate due to frictional resistance is suppressed, and the article descends slowly. Therefore, even if a succeeding article collides with a preceding article or the like stopped at a position downstream of the chute, the impact force is small and the article is not likely to be damaged.

In particular, when only the peripheral edge of the canvas is fixed to the chute main body and is in contact with the surface of the cushion at least at the center of the bottom plate, the article shakes as the article descends on the canvas surface. Energy is absorbed by the canvas, and at this time, a large amount of kinetic energy of the article is consumed due to frictional resistance of a portion of the back surface of the canvas that is in contact with the surface of the shock absorber, so that even when the weight of the article is large. , Its descending speed is maintained at a safe speed.

When a lightweight article descends on the surface of the canvas, the sway of the canvas is small, and the kinetic energy of the article is consumed more than necessary, so that the descending speed becomes too slow or the shot stops during the chute. Instead, the descent speed is adjusted naturally.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a first embodiment of a canvas-type chute of the present invention, and FIG. 2 is a view showing a cross-sectional structure thereof. A canvas-type chute 1 (hereinafter simply referred to as a chute 1) is shown.
They are arranged at a plurality of sorting positions provided along the transport path of the sorting conveyor 2.

The sorting conveyor 2 is guided by a guide rail 3 to an endlessly circulating drive chain 4.
A plurality of trays 7 are provided at regular intervals via support brackets 5 and 6.

On the tray 7, articles (not shown) to be sorted are placed. At the sorting position, the articles on the tray 7 are selectively tilted toward the chute 1 by a tilt mechanism (not shown). Can be dropped on the chute 1 via a transfer plate 8 provided along the guide rail 3.

As shown in FIGS. 1 and 2, the chute 1 has an inclined bottom plate 9, a pair of side plates 10 and 11 raised from the left and right side edges of the bottom plate 9, and a lower end of the bottom plate. A chute body 13 rising from an edge and having the pair of side plates and an end plate 12 whose left and right ends are continuous.
And a sheet-like cushioning body 14 lined on the upper surface of the bottom plate 9 and the inner surfaces of the pair of side plates 10 and 11 and the end plate 12, and a canvas 15 covering the surface of the cushioning body 14.

In a portion near the end plate 12 below the chute 1, a storage portion S in which the bottom plate 9 is substantially horizontal is provided.
Is formed, and the article descending from above is temporarily stored in this portion.

The chute body 13 can be made of a metal plate or a synthetic resin having high mechanical strength. In this embodiment, a steel plate is used. In addition, the buffer 14
For example, urethane foam resin or synthetic rubber can be used.

In this embodiment, the cushioning member 1 is made of urethane foam resin integrally molded in a shape suitable for the chute body 13.
4, the upper surface of the bottom plate 9 and the pair of side plates 10, 1
1 and the entire inner surface of the end plate 12.

As shown in FIG. 2, the canvas 15 is fixed so as to cover the entire surface of the cushioning body 14 along the surface of the cushioning body 14.
0, 11 and a fixed reinforcing frame 16 having a U-shaped cross section, which is mounted over three upper edges of the end plate 12, respectively, together with the buffer 14, and the buffer 14 and the canvas 15 are attached to the side plates 10, 11 and the end plate 12 are fixed so as not to come off from the upper edge.

In the present embodiment, the upper edge of the bottom plate 9 is hidden below the transfer plate 8, and the articles supplied from the sorting conveyor 2 collide with the bumper 14 and the canvas 15 Since there is no possibility that the fixed reinforcing frame is peeled off from the bottom plate 9, the fixed reinforcing frame is not provided at the edge portion.
A fixed reinforcing frame having a cross-sectional structure similar to that of 6 may be attached to this portion.

In the above-described configuration, when the tray 7 on which the articles on the sorting conveyor 2 are placed moves to the sorting position, the tray 7 is provided at the sorting position by a tilting mechanism (not shown). The article on the tray 7 is discharged onto the transfer plate 8 by being tilted toward the chute 1 side.

Since the chute 1 side of the chute 1 is inclined downward, the articles dropped on the chute 1 further fall onto the canvas 15 covering the bottom plate 9 of the chute 1. , Cushion 1 between canvas 15 and bottom plate 9
By 4, the impact of the drop is absorbed and damage to the article is prevented. Further, noise generated when the article falls onto the chute 1 is also absorbed by the buffer 14 and the canvas 15 and is silenced.

On the other hand, if the article drops from the handover plate 8 to one side of the side plate 10 or the side plate 11, the article hits the canvas 15 covering the inner surface of the side plate 10 or the side plate 11 and stops. As a result, jumping out of the chute 1 is prevented.

At this time, the side plate 1 at the position where the article abuts
The shock is alleviated by the shock absorber 14 sandwiched between the zero or the side plate 11 and the canvas 15, and the noise of the collision generated at this time is also absorbed by the shock absorber 14 and the canvas 15 to be silenced. Then, the article is placed on the canvas 15 on the bottom plate 9.
Of the canvas 15 slides or rolls down depending on its shape and surface condition.

The part through which the article passes when the article descends
Resistance between the canvas 15 and the cushion 14 and the article and the canvas 15
Due to the frictional resistance with the surface, the kinetic energy of the article is
The descent of articles that descend on the canvas surface of the bottom plate as they are consumed
The increase in speed is suppressed, and it gradually descends.
12 striking the canvas 15 covering the inner surface
Stop at the section S. In this case, the periphery of the canvas is shot
Since it is fixed to the upper edge of the main body side plate, the article and the canvas
Even if there is frictional resistance between the chute and the chute
It will not be.

The article descends at a safe speed that does not cause damage to the article even if the article directly collides with the end plate 12.
By the shock absorber 14 provided on the inner surface of the vehicle and the canvas 15 covering the outer surface thereof, noise at the time of collision and impact applied to the article are reduced as much as possible.

Further, another article is put into the chute 1 from the sorting conveyor 2 following the article, and the storage section S
Even if the article collides with the stopped article, the following article is sufficiently decelerated by the frictional resistance and deformation resistance received from the canvas 15 when descending, and then stops upon hitting the preceding article. Are small and there is no risk of damage to these articles.

Next, FIG. 3 is a perspective view showing a second embodiment of the canvas-type chute of the present invention, and FIG. 4 is a view showing the cross-sectional structure thereof. It differs from the canvas-type chute 1 of the first embodiment only in the fixing structure of the canvas 15A, and the portions indicated by the same numbers as those in FIGS. 1 and 2 are those of the first embodiment described above. It has the same structure as.

In this embodiment, a pair of side plates 10 and 11 of the chute body 13 and an end plate 12
Are fixed together with the cushioning member 14 in a fixed reinforcing frame 16 having a U-shaped cross section which is mounted over the three upper edges. Then, the surface of the buffer 14 and the bottom plate 9
The canvas 15A is loosely attached to the chute body 13 so as to be in contact with the vicinity of the center of the chute 13, and is configured so that the portion excluding the vicinity of the fixed reinforcing frame 16 can be displaced to some extent with respect to the surface of the buffer 14. .

In the canvas-type chute 1A of this embodiment, the articles are transferred to the sorting conveyor 2 in the same manner as in the first embodiment.
The shock of the fall is buffered by the cushioning body 14 and the canvas 15A when the article falls on the canvas 15A from above, and the canvas 15A swings when the article descends on the surface of the canvas 15A. Canvas 15A
Is consumed in large amounts by friction between the back surface of the
The descending speed of a heavy article can be maintained at a sufficiently low speed.

Further, in this embodiment, the surface of the canvas 15A is curved upward on both the left and right sides and is slackened so that the central portion is lowered. When the article falls, the article is guided smoothly down the center of the bottom plate 9 along the curved inclination of the canvas 15A.

On the other hand, when a light article is dropped from the sorting conveyor 2 to the chute 1A, the swing of the canvas 15A is small, and the kinetic energy absorbed from the article to the canvas 15A side is small, so that the descent speed becomes too slow. It does not stop in the middle of the shoot 1A.

The canvas-type chute of the present invention is not limited to the one used in the sorting position of the sorting conveyor as in each of the above-described embodiments. It can be widely used as a general article chute for transporting loose articles. In this case, the canvas-type chutes 1 and 1 of the above-described embodiments are used.
The end plate 12 of A may be removed to form a canvas chute so that articles can be delivered from the lower end of the canvas chute to another conveyor.

[0037]

As described above, according to the canvas-type chute of the present invention, the shock applied to the article at the time of article introduction is cushioned by the sheet-like cushioning body lined on the bottom plate upper surface and the inner surface of the side plate and the canvas covering the surface. Therefore, it is possible to prevent damage to the article and reduce noise generated when the article is inserted.

According to the canvas-type chute of the present invention,
Due to the deformation resistance between the canvas and the cushion at the part where the article passes and the frictional resistance between the article and the canvas surface, the increase in the speed of the article descending on the canvas surface of the bottom plate is suppressed, and the preceding vehicle stopped at the chute downstream position When a subsequent article collides with an article or the like, damage to the article can be prevented.

Furthermore, when only the peripheral edge of the canvas is fixed to the upper edge of the chute main body side plate, and at least the center of the bottom plate is in contact with the surface of the cushion, the canvas swings when the article descends on the canvas surface. A large amount of kinetic energy is consumed by the frictional resistance of the portion of the back surface of the canvas that is in contact with the surface of the cushion, and even when the weight of the article is large, the descent speed can be suppressed to a safe speed, When a lightweight article descends on the canvas surface, the swing of the canvas is reduced, so that the kinetic energy of the article is consumed more than necessary and the descending speed does not become too slow, and it does not stop during shooting. The descending speed of the article can be naturally adjusted to the optimum speed.

[Brief description of the drawings]

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

FIG. 2 is a diagram showing a cross-sectional structure of a canvas-type chute according to the first embodiment of the present invention.

FIG. 3 is a perspective view of a canvas-type chute showing a second embodiment of the present invention.

FIG. 4 is a view showing a sectional structure of a canvas type chute according to a second embodiment of the present invention.

FIG. 5 is a perspective view showing an example of a conventional chute.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 1A Candle chute 2 Sorting conveyor 3 Guide rail 4 Conveying chain 5, 6 Support bracket 7 Tray 8 Transfer plate 9 Bottom plate 10, 11 Side plate 12 End plate 13 Chute body 14 Buffer body 15, 15A Canvas 16 Fixed reinforcement frame S Storage Department

──────────────────────────────────────────────────続 き Continued on the front page (56) References Japanese Utility Model 58-184410 (JP, U) Japanese Utility Model Hei 1-169520 (JP, U) Japanese Utility Model 50-12130 (JP, Y1) (58) Field (Int.Cl. ⁷ , DB name) B65G 11/00-11/20

Claims (2)

(57) [Claims] 1. A chute body having an inclined bottom plate and a pair of side plates rising from both right and left side edges of the bottom plate; and a lining on a bottom plate upper surface of the chute body and an inner surface of each of the pair of side plates. 1. A canvas-type chute, comprising: a sheet-like cushioning body; and a canvas covering a surface of the cushioning body and having a peripheral edge fixed to an upper edge of the side plate. 2. The canvas-type chute according to claim 1, wherein only a peripheral portion of the canvas is fixed to an upper edge of the side plate, and the canvas is in contact with a surface of the buffer at least at a central portion of the bottom plate.