JP3658695B2 - Manufacturing method of steeply inclined conveyor belt - Google Patents

Description

【００１７】
上記のようにして出来上った急傾斜コンベヤベルト１０は、例えば図４のように取りつけられ粉粒体等を下位から上位へ、或いは上位から下位へと搬送することが出来る。
【００１８】
【発明の効果】
以上、上記にその詳細を示したように、本発明により、先ず第１に従来工数がかかっていたバフ工程に代わって、予め接着する部分にベースベルト中にオックス帆布を一緒に成型加硫し、接着時に該頒布を引き剥すことにより瞬時に接着に適した表面が得られる。更には、従来バフ困難とされていた耐摩耗性ゴムがベースベルトカバーゴム及び桟の材料として適用可能となった。また、その他の効果として、ベースベルト本体を加硫する際に表面にオックス帆布を埋設することによりベアー等の不良発生が皆無となった。
本発明の第２の効果としてベースベルト本体及び桟よりも硫黄量が１〜５ＰＨＲ多い未加硫シートゴム（接着用ゴム）を両者間に挟んで加硫接着することにより接着強度をより向上させ得る事が出来るようになった。
【図面の簡単な説明】
【図１】ベースベルト成形図の概略断面図
【図２】横桟（ａ）及び耳桟図（ｂ）の概略断面図
【図３】ベースベルトと横桟（ａ）及び耳桟（ｂ）のジョイント方法
【図４】急傾斜コンベヤベルト適用例
【符号の説明】
１ オックス帆布
１ａ オックス帆布剥離面
２ 上面カバーゴム
３ 補強帆布
４ 下面カバーゴム
５ 耳ゴム
６ ベースベルト
７ 横桟
８ 耳桟
９ 接着ゴム
１０ 急傾斜コンベヤベルト[0001]
[Field of the Invention]
The present invention provides a conveyor belt which has a different shape on the surface of a base conveyor belt and is intended to join a material mainly composed of rubber, in particular, by providing an ear beam and a horizontal beam to move powders and the like from lower to higher. The present invention also relates to a method of manufacturing a steeply inclined conveyor belt that can be conveyed from the upper level to the lower level.
[0002]
[Prior art]
Conventionally, in a steeply inclined conveyor belt, as a method of bonding a crosspiece to a base belt, (1) a method of bonding a pre-cured crosspiece to a base belt using a natural vulcanizing agent. (2) A method of vulcanizing and bonding to the base belt while heat vulcanizing the crosspiece. Or (3) A method of joining the vulcanized bars in advance with bolts or screws. Etc. were performed.
In the case of (1) and (2) above, a method was adopted in which the adhesive surface of the vulcanized base belt and the crosspiece is buffed to increase the adhesive force. In addition, when vulcanized and bonded, it is normal that rubber glue is applied to the buff surface, and in particular, no adhesive rubber is inserted. (Japanese Utility Model Laid-Open No. 5-12410, Japanese Utility Model Laid-Open No. 5-12411, Japanese Utility Model Publication No. 57-23363, etc.)
[0003]
[Problems to be solved by the invention]
However, each of the above methods has the following problems or disadvantages.
(1) As the belt becomes larger, when the above-mentioned crosspieces are bonded, a great amount of man-hours are required for buffing, and in some cases, dedicated equipment is required.
(2) Along with buffing, the working environment deteriorates due to dust generation.
(3) It is necessary to take into consideration that the rubber material is easy to buff, and the use of wear-resistant rubber or the like required for the belt tends to be difficult.
(4) The method of fixing with bolts, screws, etc. is inferior in durability because stress concentrates in part during use. In addition, the use of bolts and screws increases the weight. Furthermore, it is easy to rust when used outdoors.
(5) If a crosspiece rubber material equivalent to that of the base belt is used for vulcanization adhesion, the cross-linking agent migrates during vulcanization, resulting in a weak spot on the adhesion interface and poor durability.
[0004]
[Means for Solving the Problems]
The present invention has been made in view of such problems, and the object of the present invention is to first increase the adhesive contact area of a part of the manufacturing process, that is, the two to be bonded. The second object is to provide a conveyor belt that can greatly simplify the buffing process for preventing peeling and breakage, and secondly, can further improve the adhesive force of the crosspiece processing portion.
[0005]
In order to achieve the above object, the present invention has endless crosspieces at both ends in the width direction of the belt-like endless belt, and these ear crosspieces can be expanded and contracted depending on the material and shape. And a method of manufacturing a conveyor belt that can convey a granular material or the like from a lower level to an upper level or from an upper level to a lower level by providing a large number of horizontal bars crossing between the ear bars at appropriate intervals. A steeply inclined conveyor characterized in that, as a method of adhering an edge rail and a horizontal rail, a canvas that is easily detachable from a vulcanized rubber is embedded in advance on a surface to be vulcanized and bonded later, and then vulcanized. By adopting the belt manufacturing method, a surface suitable for bonding (a surface like a buffing) can be obtained instantly by peeling off the canvas immediately after bonding after vulcanization.
[0006]
The above-mentioned canvas that can be easily peeled off from the vulcanized rubber means that when a material such as a canvas embedded in an unvulcanized body is integrally vulcanized, the material in the vulcanized rubber is easily vulcanized. The material is not particularly limited as long as it can be separated from the rubber, but the material embedded in the rubber is required to be a material that can sufficiently withstand the vulcanization temperature or time of the rubber, and more preferably this material. The rubber surface is preferably a material that exhibits the same unevenness as the rubber surface is just buffed, and Ox canvas and the like are preferably used.
[0007]
Further, as described in claim 2, the belt-like endless belts have endless crosspieces at both ends in the width direction, and these ear crosspieces can be expanded and contracted depending on the material and the shape, and a large number of crossings between the ear crossings are formed. A method of manufacturing a conveyor belt that can convey a granular material or the like from a lower level to an upper level, or from an upper level to a lower level by providing horizontal bars at appropriate intervals, and a method of bonding the edge bars and the horizontal bars in the belt As described above, an unvulcanized rubber sheet having a sulfur amount of 1 to 5 PHR larger than that of the base belt or the crosspiece rubber is sandwiched between the surfaces of the conveyor belt to be vulcanized and bonded, and then vulcanized and bonded. It was set as the manufacturing method of the steeply inclined conveyor belt. As a result, the migration of the crosslinking agent can be minimized and the strength of the bonded portion can be further improved. It is necessary to adjust the amount of sulfur according to the thickness of the unvulcanized rubber sandwiched between them and the vulcanization conditions.
[0008]
Furthermore, as described in claim 3, the belt-like endless belt has endless crosspieces at both ends in the width direction, and these ear crosspieces can be expanded and contracted depending on the material and shape, and a large number crossing between the ear crosspieces. This is a method for manufacturing a conveyor belt in which a granular material or the like can be conveyed from a lower level to an upper level, or from an upper level to a lower level by providing the horizontal bars at an appropriate interval, and bonding processing of the ear bars and the horizontal bars in the belt As a method, at least the surface to be vulcanized and bonded later is embedded in advance with a canvas that can be easily peeled off from the vulcanized rubber, vulcanized, then the canvas is peeled off, and the peeled portion of the conveyor belt is vulcanized and bonded. By making a method of manufacturing a steep conveyor belt characterized in that an unvulcanized rubber sheet having a sulfur amount of 1 to 5 PHR greater than that of the base belt or the crosspiece rubber is sandwiched between the surfaces and then vulcanized and bonded. did Than it came to solving the problem point.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
First, in advance, a canvas that can be easily separated from the vulcanized rubber is embedded in the surface of the part to be bonded later, and vulcanized (base belt, ear cross, horizontal cross). Thereafter, by peeling off the entire embedded canvas, it is possible to easily obtain moderate unevenness (conventional buffing is necessary) that is convenient for bonding with high accuracy, that is, a conventional buffing state. Furthermore, the surface becomes a fresh surface.
[0010]
That is, the first point of the present invention is that, by using the release surface of the canvas instead of the conventional buffing, the surface of the vulcanized rubber to be bonded later is (1) moderate unevenness (anchor). (Effect) can be easily obtained, and (2) the adhesive surface can be easily obtained as a clean surface (briedless) state.
Furthermore, the second point of the present invention is to prepare an unvulcanized rubber sheet for bonding that has an amount of sulfur of 1 to 5 PHR higher than the rubber of the base belt and the crosspiece on the bonding surface, and sandwich and vulcanize and bond it. It is a feature. If the amount of sulfur in the adhesive unvulcanized rubber is equal to or less than that, the transfer of sulfur from the unvulcanized rubber to the vulcanized rubber causes a decrease in elastic modulus and the like, resulting in a decrease in adhesive strength. However, if the difference in the amount of sulfur is larger than this, the physical properties of the adhesive rubber itself will be reduced, leading to a reduction in adhesive strength.
[0011]
Although the present invention will be described with a steeply inclined conveyor belt as a main component, the present invention is naturally applicable to a case where only a base belt having various shapes such as a horizontal beam and a vertical beam, or only an ear beam is bonded.
[0012]
【Example】
The present invention will be described below with reference to FIGS. 1 to 4, but of course is not limited to this embodiment.
[0013]
[Example]
First, the base belt 6 is molded as shown in FIG. At this time, an ox canvas (PET) 1 that can be easily peeled off from the vulcanized rubber later is embedded in the upper cover rubber 2 at least at a portion where the crosspiece is bonded later, and vulcanized after molding. Further, when the vulcanized crosspiece is bonded later, the ox canvas 1 is embedded in the bonding surface of the crosspiece as shown in FIG. 2 and vulcanized after molding.
[0014]
Next, the Ox canvas embedded in the bonding surface is peeled off. At this time, the ox canvas and the vulcanized rubber can be easily peeled off because they are easily peeled off. Since the rubber surface 1a after peeling off is an uneven surface convenient for bonding, it is not particularly necessary to buff.
Further, an adhesive rubber sheet 9 having a sulfur amount of, for example, 3 PHR greater than that of the base belt and the crosspiece having a thickness of about 0.5 mm is attached to the entire adhesive surface, and both are vulcanized and bonded together. (See Figure 3)
A natural vulcanization type adhesive may be used in place of the adhesive rubber sheet 9, but the adhesive strength is considerably lower than that of the vulcanization adhesion type.
Further, when vulcanized and bonded, the crosspiece may be made of unvulcanized rubber. However, in this case, it is not necessary to make the bonding surface of the crosspiece an Ox canvas peeling surface.
[0015]
In addition, Table 1 shows a compounding example of rubber used as the steeply inclined conveyor belt of the present invention.
[0016]
[Table 1]

[0017]
The steeply inclined conveyor belt 10 completed as described above can be mounted as shown in FIG. 4, for example, and can convey the granular material or the like from the lower order to the upper order or from the upper order to the lower order.
[0018]
【The invention's effect】
As described above in detail, according to the present invention, first, in place of the buffing process, which has previously required man-hours, the ox canvas is molded and vulcanized together with the base belt in the base belt. The surface suitable for bonding can be obtained instantaneously by peeling off the cloth during bonding. Furthermore, wear-resistant rubber, which has been considered difficult to buff, can be applied as a base belt cover rubber and a crosspiece material. As another effect, when the base belt body was vulcanized, the occurrence of defects such as bears was eliminated by burying ox canvas on the surface.
As a second effect of the present invention, the unvulcanized sheet rubber (adhesive rubber) having a sulfur amount of 1 to 5 PHR higher than that of the base belt body and the crosspiece is sandwiched between the two and vulcanized and bonded to further improve the adhesive strength. I can get it.
[Brief description of the drawings]
1 is a schematic cross-sectional view of a base belt molding drawing. FIG. 2 is a schematic cross-sectional view of a horizontal beam (a) and an ear beam (b). FIG. 3 is a base belt, a horizontal beam (a) and an ear beam (b). Joint method [Fig. 4] Application example of steeply inclined conveyor belt [Explanation of symbols]
1 Ox canvas 1a Ox canvas peeling surface 2 Upper cover rubber 3 Reinforced canvas 4 Lower cover rubber 5 Ear rubber 6 Base belt 7 Horizontal beam 8 Ear beam 9 Adhesive rubber 10 Steep conveyor belt

Claims (3)

By having endless crosspieces at both ends in the width direction of the belt-like endless belt, these ear crossings can be expanded and contracted depending on the material and shape, and by providing a large number of horizontal crossings across these ear crossings at appropriate intervals A method of manufacturing a conveyor belt that enables conveyance of powder and the like from a lower level to an upper level, or from an upper level to a lower level. A method of manufacturing a steeply inclined conveyor belt, characterized in that a canvas that is easily peeled off from vulcanized rubber is embedded in advance and vulcanized. By having endless crosspieces at both ends in the width direction of the belt-like endless belt, these ear crossings can be expanded and contracted depending on the material and shape, and by providing a large number of horizontal crossings across these ear crossings at appropriate intervals A method of manufacturing a conveyor belt that enables conveyance of powder and the like from a lower level to an upper level or from an upper level to a lower level. A method for manufacturing a steeply inclined conveyor belt, characterized in that an unvulcanized rubber sheet having a sulfur amount of 1 to 5 PHR greater than that of a base belt or a crosspiece rubber is sandwiched between the two to be vulcanized and then vulcanized and adhered. By having endless crosspieces at both ends in the width direction of the belt-like endless belt, these ear crossings can be expanded and contracted depending on the material and shape, and by providing a large number of horizontal crossings across these ear crossings at appropriate intervals A method of manufacturing a conveyor belt that enables conveyance of powder and the like from a lower level to an upper level or from an upper level to a lower level. A canvas that is easy to peel off from the vulcanized rubber is embedded in advance, vulcanized, and then the canvas is peeled off, and the peeled portion of the conveyor belt is vulcanized and bonded to the surface of the base belt or crosspiece rubber. A method for producing a steeply inclined conveyor belt, characterized in that an unvulcanized rubber sheet having a content of 1 to 5 PHR is sandwiched between the two and then vulcanized and bonded.

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