JPH10120157A - Extending and contracting conveyor belt and extending and contracting conveyor device using it - Google Patents

Abstract

PROBLEM TO BE SOLVED: To stabilize the arrangement positions of conveying articles as well as to well perform transference of the conveying articles while simplifying handling of respective belts, in an extension conveyor device for transferring the conveying articles from an upstream side belt conveyor to a downstream side belt conveyor by increasing the arranging distance. SOLUTION: Extension regulating parts 6a having the specified width, for regulating the extension in the width direction when a belt 6 is extended in the width direction is provided on the extending and contracting conveyor belt 6 so constituted as to be extended in the belt width direction over the whole longitudinal direction of the belt, and an extending belt conveyor 5 in which the extending and contracting conveyor belt 6 is to be extended in the belt width direction so that the extension regulating parts 6a on the upstream end and the downstream end may face the positions of conveying articles 17 on the upstream side and downstream side belt conveyors is put in connection between the upstream side and downstream side belt conveyors.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention belongs to the technical field of a telescopic conveyor belt and a telescopic conveyor device using the belt.

[0002]

2. Description of the Related Art In general, a telescopic conveyor device transfers articles conveyed by a plurality of arrangements in a belt width direction at predetermined arrangement intervals by an upstream belt conveyor to a downstream belt conveyor. The downstream belt conveyor is configured to convey articles with the same number of arrangements as the upstream belt conveyor and at a different arrangement interval from the upstream conveyor belt.

[0003] As such a telescopic conveyor device, for example, in a stretching conveyor device in which the arrangement interval of conveyed articles is increased by a downstream belt conveyor, conventionally, as shown in Fig. 6, an upstream belt conveyor 21 and a downstream belt conveyor 22 are provided. And the same number of intermediate belt conveyors 23, 2
Are connected to each other, and the intermediate belt conveyors 23 are transferred to the upstream and downstream belt conveyors 21 and 22, respectively.
It is known that the intervals between adjacent intermediate belt conveyors 23 are arranged to be larger on the downstream side than on the upstream side in correspondence with the arrangement position of 4, 24,. In this case, in particular, the upstream and downstream belt conveyors 2
Since the intermediate belt conveyors 23 corresponding to the arrangement positions of the transported objects 24 at the left and right end portions of the upstream and downstream belt conveyors 21 and 22 are arranged at a large angle with respect to the transport direction of the upstream and downstream belt conveyors 21 and 22. In addition, there is a problem that the transfer of each conveyed product 24 from the upstream belt conveyor 21 to each intermediate belt conveyor 23 and the transfer from each intermediate belt conveyor 23 to the downstream belt conveyor 22 cannot be performed well. Therefore, the pulleys of the upstream belt conveyor 21, the downstream belt conveyor 22, and the intermediate belt conveyors 23 are arranged in a complicated manner, and the upstream and downstream ends thereof are respectively located at the downstream end and the downstream belt conveyor 22 of the upstream belt conveyor 21. Or the so-called knife edge by reducing the diameter of each pulley disposed on the downstream side of the upstream belt conveyor 21 and on the upstream side of the downstream belt conveyor 22, respectively. Is also known.

Further, by directly connecting the upstream belt conveyor 21 and the downstream belt conveyor 22 and providing a guide plate at the upstream end of the downstream belt conveyor 22, each conveyed object 24 is arranged along the guide plate. It has been known that the array is forcibly moved to increase the arrangement interval.

On the other hand, as disclosed in, for example, JP-A-59-48317, a telescopic conveyor belt capable of extending in the belt width direction has been proposed.

[0006]

However, when a plurality of intermediate belt conveyors 23, 23,... Are connected as in the conventional example, many belt conveyors are required.
This leads to higher costs. Moreover, each intermediate belt conveyor 2
In order to make the upstream end and the downstream end of the belt 3 substantially parallel to the downstream end of the upstream belt conveyor 21 and the upstream end of the downstream belt conveyor 22, it is necessary to arrange each belt and to arrange a pulley driving machine. It gets complicated. On the other hand, even if it becomes a knife edge, the upstream end and the downstream end of each intermediate belt conveyor 23 are not parallel to the downstream end of the upstream belt conveyor 21 and the upstream end of the downstream belt conveyor 22, respectively. The object 24 may fall.

Further, in the case where the guide plate is provided on the downstream belt conveyor 22, the transfer object 24 can be satisfactorily connected, but there is a problem that the transfer object 24 is damaged by rubbing with the guide plate.

In view of this, the above proposed example (Japanese Patent Laid-Open No. 59-483)
No. 17), the stretched belt conveyor, which is stretched in the belt width direction so that the stretchable conveyor belt spreads toward the downstream side, is combined with the upstream belt conveyor 21 and the downstream belt conveyor 22. It is conceivable to connect between them. However, in this case, since the telescopic conveyor belt is stretched over the entire width of the belt, each part thereof slightly contracts or expands while the telescopic conveyor belt is being driven, and the conveyed material 2
4 is not stable, and there is a problem that the arrangement position of the conveyed products 24 on the downstream belt conveyor 22 varies.

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and has as its object the purpose of making it possible to transfer from an upstream belt conveyor to a downstream belt conveyor by changing the arrangement interval of conveyed articles. By improving the telescopic conveyor belt of the above-mentioned proposal example, it is possible to simplify the handling of the belt, to make it possible to carry out the transfer of the goods satisfactorily, and to stabilize the arrangement position of the goods. Is to do.

[0010]

In order to achieve the above object, the present invention relates to a telescopic conveyor belt configured to be stretchable in a belt width direction when the belt is stretched in the width direction. An extension regulating portion for regulating the extension in the width direction is provided over the entire belt longitudinal direction.

More specifically, the invention of claim 1 is based on the premise that the telescopic conveyor belt is configured to be extendable in the belt width direction.

[0012] At a plurality of positions in the width direction of the telescopic conveyor belt, expansion restricting portions of a predetermined width for restricting the expansion in the width direction when the belt is stretched in the width direction extend over the entire belt longitudinal direction. It is assumed that it is provided.

Thus, even if the telescopic conveyor belt is stretched in the width direction, each of the stretch regulating portions is not stretched, and the predetermined width is maintained over the entire length of the belt. Only the spacing between the matching extension restrictors changes. For this reason, a telescopic conveyor device in which a telescopic belt conveyor composed of telescopic conveyor belts having the same number of expansion regulating parts as the number of conveyed articles on the upstream and downstream belt conveyors is connected between the upstream and downstream belt conveyors. On the other hand, the telescopic conveyor belt is stretched such that the expansion regulating portions at the upstream end and the downstream end correspond to the arrangement positions of the conveyed articles on the upstream and downstream belt conveyors, respectively, and are conveyed by the upstream belt conveyor. The conveyed article is transferred to the downstream belt conveyor after being transferred on each of the extension regulating sections, so that the upstream end and the downstream end of the telescopic belt conveyor are connected to the downstream end and the downstream end of the upstream belt conveyor, respectively. It can be made substantially parallel to the upstream end of the side belt conveyor, so that falling of the conveyed product can be prevented. As a result, the pulleys of the belt conveyors do not have to be arranged in a complicated manner, and there is no need to provide a guide plate for forcibly moving the conveyed object, so that the conveyed object is not damaged. In addition, since the conveyed article is conveyed on the extension regulating section without contracting or expanding at each of the extension regulating sections during the operation of the telescopic conveyor belt, the position of the conveyed article is stabilized. Therefore, it is possible to satisfactorily carry out the transfer of the conveyed articles while simplifying the handling of the belt, and to stabilize the arrangement position of the conveyed articles.

According to a second aspect of the present invention, in the first aspect of the present invention, the extension restricting section includes a low-extension thread that extends in the belt width direction and that is sewn to a stretchable conveyor belt base fabric that extends in the belt width direction. Shall be provided.

According to the present invention, it is possible to easily restrict the predetermined width portion of the base fabric for the telescopic conveyor belt from being stretched by the low-stretch yarn extending in the belt width direction. There is no restriction on the type of the yarn, and the yarn may be selected according to the tensile stress in the belt width direction. Therefore, a specific configuration of the simple extension restricting portion can be easily obtained.

According to a third aspect of the present invention, in the second aspect of the present invention, the cover layer is provided on the surface of the base fabric for the telescopic conveyor belt on the side of the belt conveying surface.

By doing so, the yarn exposed on the belt transport surface side of the base fabric for the telescopic conveyor belt can be covered by the cover layer, so that the belt transport surface can be smoothed. Therefore, it is possible to prevent the transported object from being damaged by the yarn and from breaking the yarn.

According to a fourth aspect of the present invention, there is provided an expansion / contraction conveyor device, which comprises an upstream belt conveyor that conveys articles with a plurality of arrangements in the belt width direction and at predetermined arrangement intervals; 2. The downstream belt conveyor according to claim 1, wherein the upstream belt conveyor has the same number of arrangements as the upstream belt conveyor, and a downstream belt conveyor that conveys articles at a different arrangement interval from the upstream belt conveyor, and between the upstream and downstream belt conveyors. A telescopic belt conveyor comprising a telescopic conveyor belt, wherein the telescopic conveyor belt has the same number of expansion regulating parts as the number of conveyed articles on the upstream and downstream belt conveyors, and an upstream end of the telescopic conveyor belt. The extension regulating portions at the downstream end are extended so as to correspond to the arrangement positions of the articles on the upstream side and the downstream side belt conveyor, respectively. Conveyed conveyed is assumed to be configured such Noritsugu downstream belt conveyor after being conveyed by Noritsui respectively on each extension limit of the telescoping conveyor belt. Thus, the same function and effect as the first aspect can be obtained.

[0019]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a stretching conveyor device A according to an embodiment of the present invention.
An upstream belt conveyor 1 and a downstream belt conveyor 2 having a larger belt width than the upstream belt conveyor 1;
And an extension belt conveyor 5 connected therebetween. In the upstream belt conveyor 1, the conveyed articles 17, 17,... Are conveyed at predetermined arrangement intervals in three rows in the belt width direction, and the downstream belt conveyor 2 has the same three rows as the upstream belt conveyor 1. Are conveyed at intervals larger than the upstream belt conveyor 1.

The stretching belt conveyor 5 comprises a telescopic conveyor belt 6, which is shown in FIG.
As shown in FIG. 3, before the belt is stretched as described later, the belt width is made substantially the same as the belt width of the upstream belt conveyor 1. Also, this telescopic conveyor belt 6
Consists of a base fabric 7 for an extendable conveyor belt and a cover layer 8 provided on the surface on the side of the belt conveying surface, and the base fabric 7 for the belt can be extended in the belt width direction. That is, the belt base fabric 7 includes, for example, a woven or knitted fabric made of a natural fiber or a synthetic fiber as a tensile member, and the tensile member can be stretched by 100% or more in the belt width direction. It is composed.

The telescopic conveyor belt 6 is provided with the telescopic conveyor belt 6 at three positions in the belt width direction corresponding to the arrangement positions of the three rows of conveyed articles 17, 17,... Of the upstream belt conveyor 1. An extension restricting portion 6a having a predetermined width for restricting the extension when extended in the direction is provided along the longitudinal direction of the belt. In other words, each of the extension restricting portions 6a includes the low-extension yarns 9 sewn to the belt base cloth 7 and sewn on the belt base fabric 7, and the yarns 9 are arranged at substantially equal intervals in the belt longitudinal direction. It is sewn to extend in the belt width direction at the same length. The predetermined width of the extension restricting portion 6a is determined by the length of the thread 9 in the belt width direction. Even if the telescopic conveyor belt 6 is extended in the width direction, the belt base cloth 7 is In the area corresponding to the extension restricting portion 6a, the extension in the width direction is restricted.

The cover layer 8 is adhered to the belt base cloth 7 after the thread 9 is sewn to the belt base cloth 7 as described above. By completely covering the yarn 9 exposed on the surface side, the belt conveying surface of the telescopic conveyor belt 6 is smoothed.
The cover layer 8 can be stretched in the belt width direction in the same manner as the belt base fabric 7, and is adhered so as to extend in the belt width direction corresponding to the belt base fabric 7. As a result, even if the telescopic conveyor belt 6 is stretched in the width direction, the portion of the cover layer 8 corresponding to the stretch regulating portion 6a is not stretched.

As shown in detail in FIGS. 4 and 5, eyelet fittings 11, 11,... Are fixed to the left and right side edges of the telescopic conveyor belt 6 at predetermined intervals in the longitudinal direction of the belt. The other end of a hook member 13 having a guide roller 12 rotatably supported at one end thereof is engaged with each eyelet fitting 11. Each of the guide rollers 12 is engaged with linear guide rails 14, 14 disposed on both left and right sides of the telescopic conveyor belt 6, whereby the telescopic conveyor belt 6 is extended in the width direction. That is, the interval between the two guide rails 14, 14 is the width of the belt of the upstream belt conveyor 1 at the upstream end, that is, the width of the telescopic conveyor belt 6 before being expanded, and the downstream belt conveyor at the downstream end. The belt length of the telescopic conveyor belt 6 is set so as to substantially coincide with the belt width of the belt 2 in the width direction. Stretched.

When the telescopic conveyor belt 6 is stretched, the interval between adjacent stretch regulating portions 6a, 6a is increased toward the downstream end, and the downstream end of each extension regulating portion 6a is connected to the downstream belt conveyor 2. It corresponds to the arrangement position of each transported object 17. In other words, the telescopic conveyor belt 6 is stretched so that each conveyed material 17 conveyed by the upstream belt conveyor 1 is conveyed by being transferred onto each of the extension regulating portions 6a, and then transferred to the downstream belt conveyor 2. I have.

The type of the thread 9 sewn to the base fabric 7 for the belt in each of the extension regulating portions 6a is not limited.
Any material may be used as long as the telescopic conveyor belt 6 does not cut when it is stretched and withstands its tensile stress.

In the stretching conveyor apparatus A having the above-described structure, the operation of each conveyed article 17 from the upstream belt conveyor 1 to the downstream belt conveyor 2 will be described. First, the conveyed articles 17 are conveyed by the upstream belt conveyor 1. Each of the conveyed articles 17 is connected to each of the extension restricting portions 6a of the telescopic conveyor belt 6 in the extension belt conveyor 5. Then, the conveyed articles 17 are conveyed to the downstream side by the extension belt conveyor 5 so that the arrangement intervals thereof gradually increase on the respective extension restricting portions 6a, and then transferred to the downstream side belt conveyor 2. In this way, each conveyed article 17 is transferred to the upstream belt conveyor 1.
When the transfer from the extension belt conveyor 5 to the downstream belt conveyor 2 and the transfer from the extension belt conveyor 5 to the downstream belt conveyor 2, the upstream end and the downstream end of the expansion belt conveyor 5 are the downstream end and the downstream belt conveyor 2 of the upstream belt conveyor 1, respectively. Is almost parallel to the upstream end of
7 can be smoothly connected without falling.

Therefore, in the above embodiment, when the telescopic conveyor belt 6 is stretched in the width direction at a plurality of positions in the width direction of the telescopic conveyor belt 6 which can be stretched in the belt width direction, the expansion in the width direction is performed. Are provided over the entire length of the belt, and an extension belt conveyor 5 composed of the telescopic conveyor belt 6 is connected between the upstream and downstream belt conveyors 1, 2. In the stretched conveyor device A thus constructed, the telescopic conveyor belt 6 includes the upstream and downstream belt conveyors 1 and 2.
Three extension restricting portions 6 of the same number as the number of arrangements of the two conveyed articles 17
, and the extension regulating portions 6a at the upstream end and the downstream end of the telescopic conveyor belt 6 correspond to the arrangement positions of the conveyed articles 17 on the upstream and downstream belt conveyors 1 and 2, respectively. Since the conveyed material 17 that has been stretched and conveyed by the upstream belt conveyor 1 is connected to each of the extension restricting portions 6 a of the telescopic conveyor belt 6 and conveyed, the conveyed material 17 is connected to the downstream belt conveyor 2. Even if the pulleys of the upstream belt conveyor 1, the downstream belt conveyor 2, and the extension belt conveyor 5 are not arranged in a complicated manner, the transfer of the conveyed product 17 can be performed satisfactorily and the conveyed product 17 is forcibly displaced. There is no need to provide a guide plate to be moved, and the transported object 17 is not damaged. In addition, the conveyed article 17 is transported on the extension restricting section 6a without being contracted or expanded in each of the extension restricting sections 6a while the telescopic conveyor belt 6 is being driven. The position stabilizes. Therefore, the transfer of the conveyed articles 17 can be performed favorably, and the arrangement position of the conveyed articles 17 can be stabilized while simplifying the handling and the like of each conveyor belt.

Further, since each extension restricting portion 6a is provided with a low-stretch thread 9 extending in the belt width direction and sewn on a base fabric 7 for an elastic conveyor belt extending in the belt width direction, the extension conveyor belt is provided. Extension control section 6 easily with respect to 6
a can be provided. Therefore, the simple extension restricting section 6
The specific configuration of “a” can be easily obtained.

Further, since the cover layer 8 is provided on the surface on the side of the belt conveying surface of the base fabric 7 for the telescopic conveyor belt,
The yarn 9 exposed on the belt conveying surface side of the base fabric 7 for the telescopic conveyor belt can be covered by the cover layer 8, and the belt conveying surface can be smoothed. Therefore, damage to the conveyed object by the thread 9 can be prevented, and the thread 9 can be protected from breaking.

In the above embodiment, the conveyed material 1 on the downstream belt conveyor 2 is extended by the extension belt conveyor 5.
Although the extension conveyor device A is arranged such that the arrangement interval of the extension belts 7 is larger than that of the upstream belt conveyor 1, on the other hand, the downstream is achieved by using a contraction belt conveyor in which the upstream end and the downstream end of the extension belt conveyor 5 are exchanged. The arrangement interval of the conveyed articles 17 on the side belt conveyor 2 is equal to the upstream belt conveyor 1.
The present invention can also be applied to a shrinking conveyor device that is smaller than the above.

[0031]

Next, a specific embodiment will be described. The belt width of the upstream belt conveyor 1 was set to 350 mm, and granular chocolate was transported in three rows as the transported product 17. At this time, each arrangement interval (distance between the centers in the belt width direction of the chocolate) was 115 mm, and the center position in the belt width direction of the chocolates in the row on both the left and right sides was 60 mm from the near side edge thereof. Further, the belt width of the downstream belt conveyor 2 is set to 455 mm, and each arrangement interval of the downstream belt conveyor 2 is set to 1 mm.
41.25 mm, and the positions of the chocolate in the rows on both the left and right sides were 86.25 mm from the side edge on the near side.

The upstream and downstream belt conveyors 1,
In the state before extension of the telescopic conveyor belt 6 in the extension belt conveyor 5 connected between the belt belts 2, the belt width is set to 350 mm which is the same as the belt width of the upstream belt conveyor 1,
The predetermined width of each extension restricting portion 6a of the telescopic conveyor belt 6 was 110 mm. In addition, the center position in the belt width direction of each extension regulating portion 6a was set to be the same as the center position in the belt width direction of the chocolate in each row of the upstream belt conveyor 1.

Then, the telescopic conveyor belt 6 is connected to two linear guide rails 14, 1 as in the above embodiment.
4, the belt width at the downstream end is the same as the belt width of the downstream side belt conveyor 2 while the belt width at the upstream end is kept unchanged. That is,
The central position in the belt width direction of each of the extension restricting portions 6a at the upstream end and the downstream end of the telescopic conveyor belt 6 corresponds to the central position in the belt width direction of each chocolate of the upstream and downstream belt conveyors 1 and 2, respectively.

When the chocolate was conveyed from the upstream belt conveyor 1 to the downstream belt conveyor 2 by the stretching conveyor apparatus A having the above-mentioned structure, it was examined whether or not the chocolate could be satisfactorily connected. As a result, it was possible to transfer the chocolate with almost no problem.
Further, the diameter of each pulley on the downstream side of the upstream belt conveyor 1 and the diameter of each pulley on the upstream side of the downstream belt conveyor 2 are reduced to be knife edges, so that the connection can be performed more favorably.

[0035]

As described above, according to the first aspect of the present invention, a telescopic conveyor belt configured to be stretchable in the belt width direction is provided at a plurality of positions in the width direction of the telescopic conveyor belt. Is provided along the entire length of the belt to restrict the expansion in the width direction when the belt is stretched in the width direction. Can be prevented, and the arrangement position of the conveyed objects can be stabilized.

According to the second aspect of the present invention, the extension regulating portion
By providing a low-extension thread sewn in the belt width direction sewn to the base fabric for the stretchable conveyor belt that extends in the belt width direction, a specific configuration of a simple extension regulating section can be easily obtained. Can be

According to the third aspect of the present invention, the cover layer is provided on the surface of the base fabric for the extensible conveyor belt on the side of the belt conveying surface, so that damage to the conveyed object by the yarn and breakage of the yarn can be prevented. .

According to the fourth aspect of the present invention, as the telescopic conveyor device, there is provided between the upstream and downstream belt conveyors the same number of expansion regulating parts as the number of arranged articles on both conveyors. The telescopic conveyor belt includes a telescopic belt conveyor, and the telescopic conveyor belt is stretched such that the expansion regulating portions at the upstream end and the downstream end correspond to the arrangement positions of the conveyed articles on the upstream and downstream belt conveyors, respectively. The same thing as the invention of claim 1 is configured such that the conveyed material conveyed on the upstream belt conveyor is transferred on each of the extension regulating portions of the telescopic conveyor belt and transferred to the downstream belt conveyor after being transferred. The operation and effect of the present invention can be obtained.

[Brief description of the drawings]

FIG. 1 is a plan view showing an extension conveyor device according to an embodiment of the present invention.

FIG. 2 is a plan view showing a state before a telescopic conveyor belt is stretched.

FIG. 3 is a sectional view taken along line III-III in FIG. 2;

FIG. 4 is an enlarged view showing a side edge portion of the telescopic conveyor belt.

FIG. 5 is a sectional view taken along line VV of FIG. 4;

FIG. 6 is a plan view showing a conventional stretching conveyor device.

[Explanation of symbols]

 A Stretch conveyor device 1 Upstream belt conveyor 2 Downstream belt conveyor 5 Stretch belt conveyor 6 Stretch conveyor belt 7 Stretch conveyor belt base fabric 6a Stretch regulating section 8 Cover layer 17 Conveyed object

Claims (4)

[Claims] 1. A telescopic conveyor belt configured to be stretchable in the width direction of a belt, wherein when the belt is stretched in the width direction at a plurality of locations in the width direction of the telescopic conveyor belt, the belt is stretched in the width direction. An extendable conveyor belt, wherein an extension regulating portion having a prescribed width for regulating is provided over the entire belt longitudinal direction. 2. The stretchable conveyor belt according to claim 1, wherein the extension restricting portion includes a low-extension yarn sewn in a belt width direction sewn to a stretchable conveyor belt base fabric extending in the belt width direction. Telescopic conveyor belt characterized by becoming. 3. The telescopic conveyor belt according to claim 2, wherein a cover layer is provided on a surface of the base fabric for the telescopic conveyor belt on the side of the belt conveyance surface. 4. An upstream belt conveyor which conveys articles at a plurality of arrangement numbers in the belt width direction and at predetermined arrangement intervals, and which has the same arrangement number as the upstream belt conveyor and is different from the upstream belt conveyor. 2. A downstream belt conveyor that conveys articles at intervals of arrangement, and between the upstream and downstream belt conveyors.
And a telescopic belt conveyor comprising the telescopic conveyor belt described in the description, wherein the telescopic conveyor belt has the same number of expansion regulating parts as the number of arrangements of the conveyed articles on the upstream and downstream belt conveyors, and is provided upstream of the telescopic conveyor belt. The extension regulating portions at the end and the downstream end are extended so as to correspond to the arrangement positions of the conveyed articles on the upstream and downstream belt conveyors, respectively, and the conveyed articles conveyed by the upstream belt conveyor are each of the telescopic conveyor belts. A telescopic conveyor device configured to transfer to a downstream belt conveyor after being conveyed on each of the extension regulating portions.