JPH03216407A - Belt conveyor device - Google Patents

Abstract

PURPOSE:To prevent an object to be conveyed from slipping-down at a steep slope by holding both side edge parts of overlapping both flat belts by front and rear press-down rollers to cause the belts to travel, and pressing the rear face of one belt by an endless cable to cause the cable to travel with the belt. CONSTITUTION:Both side edge parts of a lapping part 9 of a main belt 1 and a driven belt 8 are held by plural front and rear press-down rollers 19, 20, and an object 1 to be conveyed is caught in the middle part and conveyed with both the belts 1, 8. Two sets of pulleys 22, 22 are pressed against the rear face of the driven belt 8 by compression coil springs 29, and further a V-belt 23 is laid over between both the pulleys 22, 22. As a result, the V-belt 23 is put into a turning movement with the rotation of the flat belt 8 while it is pressed against the rear face of the flat belt 8. Thus, the object 14 to be conveyed is prevented from slipping-down and can be conveyed smoothly even when both the belts 1, 8 are steeply inclined.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention involves superimposing parts of the running paths of a pair of flat belts, each of which runs endlessly, and applying a covering between the overlapping parts. This article relates to a belt conveyor device that pinches and conveys objects. [Prior Art] Fig. 6 shows an example of a conventional belt conveyor device of this type.

(1) is a main belt made of an elastic flat belt made of rubber or the like, which includes a driving roller (2) rotated by a motor (not shown), a driven roller (3), and an appropriate guide roller (4). (5) (6) (7) etc.,
Polymerization conveyance portion (9) that polymerizes with the slave belt (8) described later
The robot faces almost vertically, allowing it to run endlessly. The slave belt (8) consists of a flat belt similar to the main belt (1), and includes guide rollers (6) (7) (10) (
12) (13) (The guide rollers (6) and (7) are shared with the main belt (1)), and some of them overlap with the main belt (1) in the polymeric conveyance section (9), and the friction Depending on the force, it can run endlessly together with the main belt (1). The objects to be conveyed (14), such as earth and sand, powder, etc., are transported from the supply hopper (l5) to the lower horizontal running section (16) of the main belt (1).
), and then in the polymerization conveyance section (9), it is sandwiched between the main belt (1) and the subordinate belt (8),
After being conveyed directly upward, it is discharged from the upper horizontal co-running portion (l7) of the main belt (1) to the receiving hopper (18). As shown in FIGS. 7 and 8, the main belt (1) and the subordinate belt (
Each side edge of 8) is held from the front and back by a plurality of presser rollers (19) and (20) at the front and rear, which are pivotally supported on a suitable frame (not shown) with the vertical positions alternately different in sequence, Their side edges open to each other to prevent the conveyed object (l4) caught inside from falling out.

In addition, in order to prevent the conveyed object (14) caught between the main belt (1) and the subordinate belt (8) from slipping down between both belts (1) and (8), the main belt (1) A plurality of pressure rollers (21) pivotally supported by the frame are pressed into contact with the center of the back surface of the frame at appropriate intervals in the vertical direction.

According to this type of belt conveyor device, the upward inclination angle of the overlapping conveyance portion (9) is set to an arbitrary angle from 0° to 90', and in particular, the object (14) to be conveyed is set to a steep slope of 90' or close to it. Can be transported.

[Problem to be solved by the invention]

In the conventional belt conveyor device as described above, when the conveyed object (14) is powder with good fluidity, the main belt ( 1) and the slave belt (8) fall in the opposite direction to the same running direction of both belts (1) and (8), as shown by the broken line in Figure 7. , press the pressure roller (
21) The main belt (1) and the subordinate belt (8) are compressed between the upper and lower adjacent push rollers (19) and (20). There is a risk of it being pushed back and forth and spilling out.

In addition, when such a situation occurs, the transported object (14)
remains between the pair of upper and lower pressing rollers (21) (21) and is no longer sent upward.

The present invention has been made in view of the problems of the conventional technology, and provides a belt conveyor that can reliably prevent the above-mentioned stagnation of conveyed objects during feeding with a simple configuration. The purpose is to provide equipment.

[Means to solve the problem]

In order to achieve the above object, the belt conveyor device of the present invention overlaps a part of the running path of a pair of flat belts, each of which runs endlessly, and conveys a conveyed object between the overlapping parts. In a belt conveyor device configured to pinch and convey, both side edges of the overlapping conveyance portion of both flat belts are pinched from the front and back by a plurality of pressing rollers each pivotally supported on an appropriate frame, and A bracket that is provided on the frame so as to be able to move forward and backward toward the back surface of either one of the overlapping conveyance portions of the flat belts, and that is always biased in a direction that advances toward the back surface, is provided with a bracket that is always biased in the direction of advancing toward the back surface. at least one pair of pulleys spaced apart from each other;
The present invention is characterized in that the endless cable, which is passed around the pulley, is brought into pressure contact with the back surface so that the endless cable runs around the flat belt.

[For production]

The object to be conveyed is conveyed while being sandwiched between both flat belts in the overlapping conveyance section.

At this time, both side edges of both flat belts in the overlapping conveyance portion are held and rotated by the front and rear pressing rollers, so that the side edges of both flat belts do not open.

In addition, the pulleys and endless cables are pressed against the back side of either one of the overlapping conveying portions of both flat belts and rotate together with the flat belt, which prevents the flat belt from sagging. This will reliably prevent objects to be conveyed from slipping down and the objects to be conveyed from falling down from the side edges of both flat belts, which would occur if the conveyed objects were to be moved.

〔Example〕

Next, embodiments of the present invention will be described with reference to the accompanying drawings. 1 to 3 show a first embodiment of the present invention. In the first embodiment, the same members as those in the conventional example described above are given the same reference numerals, and detailed explanation thereof will be omitted (in the second embodiment shown in FIG. 4, and in FIG. The third shown in
The same applies to the examples).

In the first embodiment, in the polymerization conveyance section (9),
The both side edges of the main belt (1) and the slave belt (8) are supported by a plurality of presser rollers (front and rear) that are pivotally supported on an appropriate frame.
19) (20) from the front and back, and from the back side of the slave belt (8), the two pairs of upper and lower pulleys (22) (22) and the upper and lower pulleys (22) (22).
A pair of left and right V-belts ( 2
3), and are arranged in a row in the vertical direction to press an appropriate number of suppressing means (24).

(25) is a bracket that supports the common shaft (z6) of the left and right bouli (22) (22), and the support rod (27) protruding from the back of the bracket is connected to the frame-like frame (27) that supports the entire device. 28), and a compression coil spring (29) is compressed between the bracket (25) and the frame (28) through the support rod (27).
The pulley (22) (22) and the belt (23) are pressed toward the slave belt (8).

The other configurations are the same as the conventional one described above.

According to the first embodiment, the slave belt (8) has a pulley (22
) and the V-belt (23) press against the main belt (1) over a wide range, so air pockets may occur between the main belt (1) and the subordinate belt (8), and both belts (1) may
) (8), there is little risk that the transported object (l4) will slip down, and the transported object (l4) can be smoothly transported even on any steep slope.

In the second embodiment shown in FIG. 4, the same bouli (22) as in the first embodiment,
3), bracket (25), shaft (26), support rod (27)
, a compression means (30) consisting of a compression coil spring (29), etc.
is pressed from the back of the main belt (1). Even with such a configuration, the same functions and effects as those of the first embodiment can be achieved.

In the third embodiment shown in FIG. 5, a shaft (
26), there are a total of 4 pulleys (22) (
31), and the inner pulley (22) adjacent to the top and bottom
(22) and the pulley (23) on which the upper part of the belt (23) is wrapped (
22) The outer pulley (31) of (22) has another
Hang the lower part of the belt (32), and then wrap the V-belt (23)
) is wrapped around the pulley (22) (22)
Another V-belt (3l) is attached to the outer pulley (3l).
By hanging the upper part of 2), ■ the belt (23) and the V-belt (32) are alternately replaced in a chain-like manner to form a series of pressing means (33). , so that it is pressed toward the slave belt (8).
With the configuration of the third embodiment, the pressing means (33) can uniformly press the slave belt (8) continuously and uniformly toward the main belt (1) without interruption in the middle. At the same time, the number of parts such as the bracket (25) and shaft (26) can be reduced. Furthermore, as shown by the imaginary line in Fig. 5, another pulley (34) is pivotally fitted in the center of each shaft (26), and the outer V-belt (32) is fitted onto this.
Another V-belt (35) placed between them may be wrapped around and pressed against the center of the back surface of the slave belt (8).

In addition to the embodiments described above, the present invention can be modified in many ways, such as the following.

(1) The pressing means has only one pair of pulleys, upper and lower, and a wide belt is wrapped around them. (2) As an endless cable, ■Instead of a belt, a chain,
Rope etc.

(3) The same pressing roller (21) as in the conventional device is provided, and this and pressing means are used to control the main belt and the subordinate belt.
In other words, both flat belts are sandwiched and run from the front and back. (4) Change the number of pulleys and the arrangement of the pulleys and endless cables as appropriate.

〔Effect of the invention〕

According to the present invention, both the flat belts are pressed against each other over a wide range by the pulleys and the endless cables, so that air pockets, objects to be conveyed between the two flat belts may slip down, and the objects to be conveyed may accumulate due to this. There is little risk of this occurring, and even if a local accumulation of conveyed material occurs between both flat belts, it can be squeezed out in the conveying direction.
It can be transported reliably.

[Brief explanation of drawings]

FIG. 1 is a side view of the polymerization and conveyance portion of the first embodiment of the present invention, FIG. 2 is a longitudinal sectional view taken along line A-A in FIG. 1, and FIG. 3 is a B--B in FIG. A cross-sectional view taken along line B, FIG. 4 is a cross-sectional view similar to FIG. 3 of the second embodiment of the present invention, and FIG. 5 is a cross-sectional view similar to FIG. 2 of the third embodiment of the present invention. 6 is a schematic side view of an example of a conventional belt conveyor device, FIG. 7 is a view taken along the line C-C in FIG. 6, and FIG. 8 is a line DD in FIG. 7. FIG. (1) Main belt (flat belt) (2) Drive roller (3) Followed roller (4) (5) (6) (7) (10) (1
1) (12) (13) Guide roller (8) Follower belt (
flat belt) (9) Polymerization conveyance section (14) Object to be conveyed
(15) Supply hopper (16) Lower horizontal rotation section (17) Upper horizontal rotation section (18) Load receiving hopper (19) (20) Presser roller (2
1) Suppression roller (22) Pulley (23
) V-belt (endless cable) (24) Pressing means (25) Bracket (26) Shaft (27)
Support rod (28) Frame (29)
Compression coil spring (30) Pressing means (3l) Pulley (32) V-belt (33) Pressing means (34) Pulley (35) V-belt Figure 5

Claims (1)

[Claims] A belt conveyor in which a pair of flat belts, each of which runs endlessly, overlaps part of each other, and conveys an object by sandwiching it between the overlapping parts. In the apparatus, both side edges of the overlapping conveyance portions of both flat belts are sandwiched from the front and back by a plurality of pressing rollers each pivotally supported on an appropriate frame, and either of the overlapping conveyance portions of the both flat belts is At least one pair of pulleys spaced apart from each other in the rotational direction of both flat belts are attached to a bracket that is provided on the frame so as to be movable toward one rear surface and that is always biased in a direction that advances toward the rear surface. supporting the
A belt conveyor device, characterized in that the endless cable, which is wound around the pulley, is brought into pressure contact with the back surface so that the endless cable runs with the flat belt.