JP4079701B2 - Conveyor belt structure - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to the structure of a conveyor belt, and more specifically, a conveyor belt composed of a core canvas embedded in both side edges in the belt width direction made of a material that is easier to stretch than a core canvas embedded in the center. This is related to the structure of the default.
[0002]
[Prior art]
As a conventional conveyor system, for example, as shown in FIG. 3, a core such as a nylon canvas or a polyester canvas is provided between an upper rubber layer and a lower rubber layer (not shown) in the driving pulley 1 and the driven pulley 2. An endless conveyor belt 3 in which body canvas is embedded is looped, and the conveyor belt 3 is curved between the driving pulley 1 and the driven pulley 2 on the carrier side X (traveling direction). A plurality of trough flora 4 for supporting at a predetermined interval are arranged, and on the return side Y (return side), return rollers 5 for supporting the flat conveyor belt 3 are arranged at a predetermined interval. Configured.
[0003]
The transported object W is loaded on the driven pulley 2 side on the carrier side X, and the transported object W is discharged on the drive pulley in which the conveyor belt 3 is reversed from the carrier side X to the return side Y. It is done on one side.
[0004]
[Problems to be solved by the invention]
By the way, as described above, the core canvas for reinforcing the conveyor belt is made of various materials such as nylon canvas and polyester canvas. -The distance L from the re 2 to the first traflora 4a tended to be long.
[0005]
This distance L is generally referred to as a trough angle change distance. However, as the distance L is shorter, it can be expected that the transported object W is prevented from being scattered and the equipment cost is reduced.
[0006]
However, in the conventional conveyor belt structure, the conveyor belt using the polyester canvas as the core canvas has the first belt from the driven pulley 2 as compared with the conveyor belt using the nylon canvas as the core canvas. The distance L to the flora 4a tends to be long, and scattering of the transported material W could not be effectively prevented.
[0007]
The reason is that the elastic elongation of the polyester canvas is 0.2 to 0.5%, which is smaller than the elastic elongation of 0.3 to 0.6% of the nylon canvas.
[0008]
The present invention pays attention to such a conventional problem, and can shorten the distance from the conversion of the flat conveyor belt to the trough shape, can effectively prevent the scattering of the transported goods, and can reduce the equipment cost. An object of the present invention is to provide a conveyor belt structure that can be made.
[0009]
[Means for Solving the Problems]
Structure of the conveyor belt of the present invention for achieving the above SL objects, in a conveyor belt having a structure in which are embedded core fabric made of the width of the multiple layers between the upper surface rubber layer and the lower surface rubber layer, wherein The core canvas is embedded separately in the center in the belt width direction and on both side edges, and the core canvas embedded in both side edges is larger than the core canvas extending in the center. It is composed of body canvas, and the joint position between the core canvas embedded in the center in the belt width direction in each layer and the core canvas embedded in both side edges in the belt width direction is the same in the belt width direction. The gist is that they are arranged so as not to be positioned .
[0010]
Ratio, when the belt width is 100, 80 to 60% of the central portion of the belt width direction, may be set to both side edges of the belt width direction in 20-40% of burying the core canvas .
[0011]
The core canvas may be embedded in a range of 2 to 6 layers . In the present invention, the same position seams located in belt width direction of the core canvas embedded in the central portion of the belt width direction of each layer, and the core canvas embedded in both side edges of the belt width direction It arranges so that it may not become . Here, the joint positions may be arranged in a step shape in the width direction .
[0012]
The conveyor belt can also be used for a curve conveyor device or a pipe conveyor device.
[0013]
In this way, the core canvas is embedded separately in the central part in the belt width direction and on both side edges, and the core canvas embedded in both side edges is extended to the core canvas embedded in the central part. By using a larger core canvas, the distance from the flat belt to the trough can be shortened, and the prevention of scattering of the transported goods can be effectively prevented.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
[0015]
FIG. 1 is an enlarged sectional view of a side edge portion of a conveyor belt showing a first embodiment of the present invention. The conveyor belt 10 has a reinforcing core between an upper rubber layer 11a and a lower rubber layer 11b. A body canvas 12 is embedded.
[0016]
In this embodiment, the three-layer core canvas 12 is embedded, but it may be embedded in the range of 2 to 6 layers .
[0017]
In the embodiment of the present invention, the core canvas 12 is embedded in the core canvas 12a at the center in the belt width direction Z and the core canvas 12b, 12b at both side edges. The core canvases 12b and 12b embedded in the part are constituted by core canvases larger than the elongation of the core canvas 12a embedded in the center part.
[0018]
That is , the core canvas 12a at the center is made of a polyester material, and the core canvases 12b and 12b at both side edges are made of a nylon canvas having a larger elongation than the polyester material. In addition, the material and combination of the core canvas 12a, 12b, 12b are not limited to the above embodiment.
[0019]
Further, the ratio of embedding the core canvas 12a in the central portion and the core canvases 12b and 12b at both side edges is the core canvas in the central portion in the belt width direction Z when the belt width H is 100. 12a is set to 80 to 60%, and the core canvases 12b and 12b at both side edges in the belt width direction Z are set to 20 to 40%.
[0020]
When the core canvas 12a at the center exceeds 80%, that is, when the core canvas 12b, 12b at both side edges is less than 20%, the trough bending distance becomes long, and the scattering of the transported material is effectively prevented. It is not possible to reduce the equipment cost. On the other hand, if the core canvas 12a in the central portion is less than 60%, that is, if the core canvas 12b, 12b in both side edges exceeds 40%, the tension load on the core canvas 12a in the central portion increases, The tensile strength of the core canvas 12a must be increased, resulting in an increase in cost.
[0021]
Further, as in the above embodiment, when the core canvas 12 is embedded in three layers, the core canvas 12a embedded in the central portion in the belt width direction Z in each of the first to third layers; The joint positions h1, h2, h3 with the core canvases 12b, 12b embedded in both side edges in the belt width direction Z are arranged so as not to be in the same position in the belt width direction Z. In this case, the joint positions h1, h2, h3 may be arranged in a step shape in the width direction . This core canvas 12a and both side edges of the core fabric 12b of the central portion, longitudinal crack strength is lowered in the longitudinal direction of the conveyor belt in the joint of the 12b, so that the conveyor belt is not vertical cracks Because .
[0022]
In the case where the joint positions h1, h2, and h3 are arranged in a step shape in the width direction, in the first embodiment, the core canvases 12b and 12b embedded in both side edges are provided on the upper rubber layer 11a. Although the side is short and the bottom rubber layer 11b side is long, as shown in FIG. 2, the core canvas 12b, 12b embedded in both side edges is long on the top rubber layer 11a side and the bottom rubber layer 11b side. Can be formed short.
[0023]
P indicates the width from the end of the conveyor belt 10 in the width direction to the embedding of the core canvas 12b, 12b.
[0024]
Since the conveyor belt constructed as described above can be easily bent or bent, it can also be used in, for example, a curve conveyor device or a pipe conveyor device.
[0025]
In this way, the core canvas 12 is embedded separately in the core canvas 12a embedded in the central part in the belt width direction Z and the core canvases 12b and 12b on both side edges, and embedded in both side edges. Since the core canvas 12b, 12b is made of a core canvas larger than the elongation of the core canvas 12a embedded in the center portion, the distance until the flat conveyor belt is converted from a pulley to a trough is shortened. It is possible to effectively prevent the transported material from being scattered.
[0026]
【The invention's effect】
In the present invention, the core canvas is embedded in the center portion in the belt width direction, separated into the central portion in the belt width direction and the side edge portions, and the core canvas embedded in the both side edge portions is embedded in the center portion. Since the core canvas is larger than the stretch of the body canvas, the distance from the flat conveyor belt to the trough can be shortened, effectively preventing the scattering of transported goods and reducing the equipment cost. There is an effect that can be reduced.
[Brief description of the drawings]
FIG. 1 is an enlarged sectional view of a side edge portion of a conveyor belt showing a first embodiment of the present invention.
FIG. 2 is an enlarged cross-sectional view of a side edge portion of a conveyor belt showing a second embodiment of the present invention.
FIG. 3 is a schematic configuration diagram of a conventional conveyor system.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Drive pulley 2 Follow pulley 3 Conveyor belt 4 Traflora 4a 1st traflora 5 Return roller W Conveyed object X Carrier side Y Return side H Belt width 10 Conveyor belt 11a Upper surface rubber layer 11b Lower surface rubber layer 12 core canvas 12a center canvas 12b core canvas Z on both side edges belt width direction h1, h2, h3 joint position

Claims (6)

In the structure of a conveyor belt in which a core canvas having a plurality of layers having the same width is embedded between the upper rubber layer and the lower rubber layer,
The core canvas is embedded in the central part in the belt width direction separately from both side edges, and the core canvas embedded in both side edges is larger than the extension of the core canvas embedded in the center part. Consists of core canvas, and the position of the joint between the core canvas embedded in the center of the belt width direction in each layer and the core canvas embedded in both side edges of the belt width direction in the belt width direction Conveyor belt structure arranged so that it is not in the same position .   The ratio of embedding the core canvas is set such that when the belt width is 100, the central portion in the belt width direction is set to 80 to 60%, and both side edges in the belt width direction are set to 20 to 40%. 2. The structure of the conveyor belt according to 1. The structure of the conveyor belt according to claim 1 or 2, wherein the core canvas is embedded in a range of 2 to 6 layers. The core canvas embedded in the central part in the belt width direction is made of a polyester material, and the core canvas embedded in both side edges in the belt width direction is made of a nylon material. Conveyor belt structure as described. The joint position between the core canvas embedded in the center portion in the belt width direction and the core canvas embedded in both side edges in the belt width direction is disposed so as to be stepped in the width direction. The structure of the conveyor belt according to 1, 2, 3 or 4.   The structure of the conveyor belt according to claim 1, 2, 3, 4 or 5, wherein the conveyor belt is used in a curve conveyor device or a pipe conveyor device.

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