JP2003222196A - Rubber endless belt and endless method thereof - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rubber endless belt with an attractive exterior which can avoid a non-planar property caused by metal hooks, and also can reduce generation of noises in a region of a belt connection part, and an endless method thereof. <P>SOLUTION: In the rubber endless belt in which both end parts are connected by inserting a pin 8 into a hole 7 formed to each belt end part of the belt whose base material is rubber having cover layers on the front and the back of a core body layer by fitting a plurality of U-shaped metal hooks arranged side by side in prescribed intervals in the width direction to the longitudinal direction of the belt in a mutually discrepant shape, the rubber endless belt is so constituted that the metal hooks 6 at the belt end parts are fixed to the core body layer 3 and the belt is covered with the front/back cover layers 4, 5 and planed, and the endless method thereof. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rubber endless belt and an endless method thereof, and more particularly to a rubber endless belt in which both ends of the belt are made endless by using metal fittings and an endless method thereof.

[0002]

2. Description of the Related Art A conventional rubber endless belt is shown in FIG.
And to connect the belt ends 31, 32 endlessly as shown in FIG.
A large number of character-shaped metal hooks 26 are fixed at a predetermined interval in the belt width direction, the hooks 26, 26 at both ends are engaged with each other in a staggered manner, and a pin 28 is formed in a hole 27 formed by fitting the hook rows at both ends. And the belt ends 31 and 32 are connected to form an endless belt.

[0003]

However, in the above-mentioned conventional rubber endless belt, non-planarity is generated on the conveying surface of the conveying belt due to the connection of the belts and the fixing of the hooks at the belt end portions, so that the object to be conveyed is conveyed. This may impair transport. Further, there is a problem that a metal hook exposed on the pulley or the table surface directly hits the belt when the belt is running and an abnormal noise is generated.

The present invention has been proposed as a result of intensive studies to solve the above-mentioned problems, and avoids non-planarity due to a metal hook in the area of the belt connecting portion and reduces the generation of abnormal noise. However, it is an object of the present invention to provide a rubber endless belt having a good appearance and an endless method thereof.

[0005]

In order to achieve the above-mentioned object, the invention according to claim 1 of the present invention is characterized in that each belt end portion of a rubber-based belt having a cover layer on the front and back of a core layer is provided. , A pin is inserted into a hole formed by fitting a plurality of U-shaped metal hooks arranged side by side at a predetermined interval in the width direction with respect to the longitudinal direction of the belt in a staggered manner so that both ends are The endless belt made of rubber is characterized in that the hook at the end of the belt is fixed to the core layer and is covered with the front and back cover layers to be planarized.

According to the first aspect of the invention, the belt end portion is a rubber endless belt in which the hooks at the belt end portion are fixed to the core layer and are covered with the front and back cover layers to be planarized. When the belt is flattened, the hook does not hit the pulley or the table when the belt is running, and the generation of abnormal noise can be reduced, and the transported object does not get caught on the hook, and an endless belt with a good appearance can be obtained.

According to the second and third aspects of the invention, the thickness of the front and back cover layers of the rubber endless belt is 0.2 mm or more, and the protruding length of the metal hook from the end surface of the belt end portion is 2.0 to 6. It is 0.0 mm.

According to the inventions of claims 2 and 3, the thickness of the front and back cover layers of the rubber endless belt is 0.2 mm.
It is the above, since the protruding length from the end surface of the belt end portion of the metal hook is 2.0 to 6.0 mm, the belt end portion can be made more flat, and the exposed portion of the metal hook is small, It is possible to further prevent the transported object from being caught by the hook.

Next, in the invention according to claim 4 of the present invention, at least one of the front and back cover layers is canvas.
The rubber endless belt according to any one of 1 to 3 above.

According to the invention described in claim 4, at least one of the front and back cover layers is canvas.
When the surface supporting the belt is a table, the coefficient of friction between the table and the belt is small, the belt runs smoothly, and an extra load is applied to the belt. The belt is not damaged and the damage on the belt is reduced.

According to a fifth aspect of the present invention, a rubber belt having cover layers on the front and back sides of the core layer is provided with a core layer from which the cover layer at each belt end is peeled, and the core layer is provided in the width direction with respect to the longitudinal direction of the belt. After fixing a plurality of U-shaped metal hooks at predetermined intervals, an adhesive is applied to the front and back surfaces of the belt after peeling and the core body side surface of the peeled cover layer, and then a rubber sheet is attached, Further, the peeled cover layer is adhered, the hooks at the end portions of the belts are engaged with each other in a staggered manner, a pin is inserted into a hole formed to connect both end portions, and then the rubber is vulcanized. A method of manufacturing a rubber endless belt.

According to the invention described in claim 5, in the core body layer in which the cover layers at the respective belt end portions of the rubber belt having the cover layers on the front and back sides of the core body layer are peeled off, the width direction with respect to the belt longitudinal direction is provided. After fixing a plurality of U-shaped metal hooks at a predetermined interval to the front side, after applying an adhesive agent to the front and back surfaces of the belt after peeling and the core body side surface of the peeled cover layer, a rubber sheet is attached. , A rubber endless belt that bonds the peeled cover layers, inserts pins into holes formed by fitting the hooks at the end portions of each belt in a mutually staggered manner, connects both ends, and then vulcanizes the rubber Since it is a manufacturing method, the belt end is flattened and the hook does not hit the pulley or the table when the belt is running, and it is possible to reduce the occurrence of abnormal noise, and the transported object does not get caught on the hook, and the appearance is Is also great It is good endless belts.

According to a sixth aspect of the present invention, a rubber core belt having a cover rubber layer on the front surface of the core body layer and a canvas cloth on the back surface is peeled from the core rubber layer, and After fixing a plurality of U-shaped metal hooks at predetermined intervals in the width direction, after applying an adhesive to the front and back surfaces of the core body after peeling and the core rubber side surface of the cover rubber A rubber sheet is attached, and then the peeled cover rubber is adhered to the front surface side of the belt, while on the back surface side, a sail cloth of the same material as the above-mentioned sail cloth is laminated, and hooks at the end portions of the belts are fitted to each other in a staggered manner. A method for manufacturing a rubber endless belt, characterized in that a rubber is vulcanized after inserting a pin into the formed hole to connect both ends.

According to the sixth aspect of the present invention, a rubber core belt having a cover rubber layer on the surface of the core layer and a canvas on the back side is peeled off from the core layer to form a core layer in the longitudinal direction of the belt. On the other hand, after fixing a plurality of U-shaped metal hooks at predetermined intervals in the width direction, adhesive is applied to the front and back surfaces of the core body and the core body side surface of the cover rubber after peeling off the rubber. A sheet is attached, and the peeled cover rubber is adhered to the front side of the belt, while a canvas of the same material as the above-mentioned canvas is laminated on the back side, and the hooks at the end portions of the belts are engaged with each other in a staggered manner. The endless belt is made by vulcanizing the rubber after inserting the pin into the hole and connecting both ends.Because the belt end is flat and the hook hits the pulley or table when the belt runs. To eliminate the occurrence of abnormal noise In addition to being able to do things, the transported object does not get caught on the hook, and an endless belt that looks good in appearance can be made.Furthermore, since the back surface of the belt is a canvas surface, if the surface that supports the belt is a table, The coefficient of friction with the belt becomes small, the belt runs smoothly, and no extra load is applied to the belt.
Less damage to the belt.

According to the seventh and eighth aspects of the present invention, the thickness of the front and back cover layers of the rubber endless belt is 0.2 mm or more, and the protruding length of the metal hook from the end face of the belt end is 2.0 to 6. It is 0.0 mm.

According to the seventh and eighth aspects of the invention, the thickness of the front and back cover layers of the rubber endless belt is 0.2 mm or more, and the protruding length of the metal hook from the end surface of the belt end is 2.0 to. Since it is 6.0 mm, the belt end can be made more flat, and the exposed portion of the metal hook is small, so that it is possible to further prevent the conveyed object from being caught by the hook.

[0017]

BEST MODE FOR CARRYING OUT THE INVENTION Next, embodiments of a rubber endless belt and its endless method according to the present invention will be described in detail with reference to the drawings. As shown in FIGS. 1 and 2, the rubber endless belt for transportation according to the present invention has both end portions 1 and 2 of the endless belt, and a core layer 3 and front and back covers laminated above and below the core layer 3. The core layers 3 of the belt ends 1 and 2 are composed of layers 4 and 5 and metal hooks 6, and are arranged in parallel in the width direction with respect to the longitudinal direction of the belt. U-shaped metal hooks 6, 6
Is fixed.

The metal hooks 6 are arranged over the entire length in the width direction of the belt end portion, and are fixed to the front surface side of the belt core body layer by one arm thereof and to the back surface side of the belt core body layer by the other arm. It is fixed. In this way, the front and back cover layers, preferably 0.2 mm thick, are formed on the surfaces of the hook and the core layer so that the hook 6 fixed in the sandwiched state at the end of the belt core layer 3 is not exposed to the surface.
A cover layer having a thickness of not less than mm is welded and coated so that the end portion of the belt is flattened.

The thickness of the cover layer in the endless portion is 0.
If it is less than 2 mm, the surface of the metal hook may be too thin and the hook may be exposed.

The interval between the adjacent metal hooks 6 is selected and fixed at a predetermined interval so that the hook at one belt end 1 enters between the hooks 6 at the other belt end 2. Each hook 6 has a pin 8 inserted into a hole 7 formed by engaging them in a mutually staggered manner, and both ends thereof are connected and coupled in a hinge shape so as to be movable in the vertical direction with the pin as an axis. Further, it is generally desirable that the projection length (H) of the hook 6 from the end surface of the belt end portion is as small as possible, but here it is 2.0 to 2.0 depending on the size and shape of the hook, the thickness of the pin, and the like. 6.0 mm is preferable.

If the protrusion length is less than 2.0 mm, the cover layers will overlap when wrapped around the pulley during belt running, resulting in peeling. On the other hand, if the protrusion length exceeds 6.0 mm, the joint space is too wide, which is not preferable in terms of performance and appearance.

Here, the material of the metal hook is preferably stainless steel, steel, or those plated with metal, and the material of the pin is preferably stainless steel, steel, nylon resin, or the like. It is preferable that the surface has a spiral shape, but the shape is not particularly limited.

The core body 3 of the belt body is made of plain fibers, twill weave, satin weave, or the like of fibers having a small elongation, such as cotton fibers, polyester fibers, aromatic polyamide fibers, and nylon fibers. The canvas 3 is impregnated or coated with a thermoplastic resin such as polyurethane or polyvinyl chloride (PVC) resin. Also, the front and back cover layers 4, 5
NBR, NR, SBR, EP as rubber forming
R, EPDM and the like are preferable.

Next, an endless method for the rubber endless belt will be described. FIG. 3 shows a conveyor rubber belt having a core of two plies, and at the belt end portion 2, the core layer 3 and the front and back cover layers 4 and 5 are separated by a predetermined peeling length (W). The core layer 3 is peeled off over the entire width.
A plurality of metal hooks 6 arranged in parallel at predetermined intervals in the width direction so as to be sandwiched therebetween are fixed to the core layer. The length of the peeled core layer 3 is long enough to fix the metal hooks 6 described above. The front and back surfaces 12 of the belt after the hook 6 is fixed to the core layer 3 and then peeled off.
And the surfaces 17 and 19 of the peeled cover layers 4 and 5 on the side of the core body 3
After applying the adhesive to the rubber sheets 13 and 16 are attached, the peeled cover rubbers 4 and 5 are further adhered to the front and back sides of the belt to cover the hook and core layers so as not to be exposed on the surface of the cover layer. Flatten.

In the case of a rubber belt having a cover rubber layer on the surface of the core layer and a canvas on the back surface, as shown in FIG. 4, after fixing the hook 6 to the core layer and then peeling it off. After applying an adhesive to the front and back surfaces of the core body and the surface of the cover rubber 4 on the core body side, the rubber sheet 13 is attached, and the peeled cover rubber is bonded to the front surface side of the belt, while the back surface side 15 is Laminated canvas of the same material as the canvas, insert the pins into the holes formed by fitting the hooks at the end of each belt in a staggered manner, connect both ends, then vulcanize the rubber and the canvas and the rubber sheet 15 and 15 are adhered to each other, and the hook and the core layer are covered and planarized so as not to be exposed on the surface of the cover layer.

[0026]

EXAMPLES Next, the effects of the present invention will be described based on specific examples. In the rubber belt according to the present invention, the belt body 1 is represented by EP160 / 2 as shown in FIG.
This is a 2-ply core body 3 made by plain-weaving 0 N / mm polyester fiber. A rough top rubber layer 2 made of NBR cover rubber and having a thickness of 4 mm is laminated on the front side of the core body 3 and made of polyester on the back side. The canvas is covered.

At the end of the belt, the core layer 3 and the front and back cover layers 4 and 5 were peeled off over the entire belt width with a peeling length of 40 mm, and a stainless hook having a diameter of 0.8 mm was attached to the core layer. After fixing at a 2.0 mm pitch, the rubber paste shown in Table 1 was applied to the front and back surfaces of the core body after peeling and the core body side surface of the peeled cover layer, and a rubber sheet was attached, and further on the belt surface side. Adhere the peeled cover rubber,
The hook and the core layer are coated and planarized so as not to be exposed on the surface of the cover layer.

[0028]

[Table 1]

As a result of running the endless belt in the layout of FIG. 5 with a pulley diameter of 100 mm, a belt speed of 150 m / min, a belt tension of 1.96 N / mm, and a belt bending frequency of 2.5 million times, the conventional belt with exposed hooks. While the amount of wear of the hooks of 0.5 to 0.7 mm was 0.5 to 0.7 mm, no wear was found in the example of the present invention, the generation of abnormal noise at the belt connecting portion was almost eliminated, and the appearance was also apparent. It was confirmed that it was a good-looking rubber endless belt.

[0030]

INDUSTRIAL APPLICABILITY As described above, the rubber endless belt and the endless method thereof according to the present invention are made of a rubber in which the hooks at the belt ends are fixed to the core layer and are covered with the front and back cover layers to be planarized. Since it is an endless belt, the belt end is flattened and the hook does not hit the pulley or table when the belt is running, making it possible to reduce the occurrence of abnormal noise and to prevent the carried object from being caught by the hook, and also in terms of appearance. This has the effect of creating a good-looking endless belt. In addition, additional effects such as being able to perform endlessness relatively easily on site can be expected.

According to the invention described in claims 2 and 3, the thickness of the front and back cover layers of the rubber endless belt is 0.2 m.
Since it is m or more and the protruding length of the metal hook from the end surface of the belt end portion is 2.0 to 6.0 mm, the belt end portion can be flattened and the exposed portion of the metal hook is small. Therefore, there is an effect that it is possible to further prevent the transported object from being caught by the hook.

According to the invention of claim 4, at least one of the front and back cover layers is canvas.
When the surface supporting the belt is a table, the coefficient of friction between the table and the belt is small, the belt runs smoothly, and an extra load is applied to the belt. There is an effect that the belt is not damaged and the damage of the belt is reduced.

According to the fifth aspect of the present invention, the core layer obtained by peeling the cover layer at each belt end of the rubber belt having the cover layers on the front and back sides of the core layer is formed in the width direction with respect to the longitudinal direction of the belt. After fixing a plurality of U-shaped metal hooks at a predetermined interval to the front side, after applying an adhesive agent to the front and back surfaces of the belt after peeling and the core body side surface of the peeled cover layer, a rubber sheet is attached. , A rubber endless belt that bonds the peeled cover layers, inserts pins into holes formed by fitting the hooks at the end portions of each belt in a mutually staggered manner, connects both ends, and then vulcanizes the rubber Since it is a manufacturing method, the belt end is flattened and the hook does not hit the pulley or the table when the belt is running, and it is possible to reduce the occurrence of abnormal noise, and the transported object does not get caught on the hook, and the appearance is Is also great Effect that it is good endless belt of there.

According to the invention described in claim 6, a rubber belt having a cover rubber layer on the surface of the core layer and a canvas on the back surface is peeled off from the cover rubber layer, and After fixing a plurality of U-shaped metal hooks at predetermined intervals in the width direction with respect to the direction, adhesive is applied to the front and back surfaces of the core body and the core body side surface of the cover rubber after peeling. A rubber sheet is attached to the back of the belt, and the peeled cover rubber is attached to the front side of the belt.On the other hand, a canvas of the same material as the above is laminated on the back side, and the hooks at the ends of the belts are fitted to each other in a staggered manner. The endless belt is made by vulcanizing the rubber after inserting the pin into the hole formed by connecting the both ends and then vulcanizing the rubber. No more hits, abnormal noise When the surface supporting the belt is a table, the endless belt can be reduced, and the transported object does not get caught on the hook, and the appearance is good-looking, and the back surface of the belt is the canvas surface. The friction coefficient between the table and the belt is reduced, the belt runs smoothly, and the belt is not subjected to an extra load, so that the belt is less damaged.

According to the invention described in claims 7 and 8, the thickness of the front and back cover layers of the rubber endless belt is 0.2 m.
Since it is m or more and the protruding length of the metal hook from the end surface of the belt end portion is 2.0 to 6.0 mm, the belt end portion can be flattened and the exposed portion of the metal hook is small. Therefore, there is an effect that it is possible to further prevent the transported object from being caught by the hook.

[Brief description of drawings]

FIG. 1 is a plan view of a rubber endless belt according to the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is a partial cross-sectional view showing an endless method for an end portion of a belt according to the present invention.

FIG. 4 is a partial cross-sectional view showing an endless method for an end portion of a belt according to another embodiment of the present invention.

FIG. 5 is a diagram showing a layout of a running test.

FIG. 6 is a plan view of a conventional rubber endless belt.

FIG. 7 is a cut sectional view of a conventional rubber endless belt.

[Explanation of symbols]

1, 2 Belt end 3 core layers 4 Front cover layer 5 Back cover layer 6 metal hooks 7 holes 8 pin 9 End face of belt end 12 Front and back of the belt after peeling 13 rubber sheet 15 Back side 16 rubber sheet 17 sides 19 sides

Claims (8)

[Claims] 1. A plurality of rubber-based belts having cover layers on the front and back sides of a core layer, each of which has a plurality of belts arranged side by side at predetermined intervals in the width direction with respect to the longitudinal direction of the belt. In a rubber endless belt in which pins are inserted into holes formed by engaging U-shaped metal hooks with each other in a staggered manner and the both ends are connected and coupled, the hooks at the belt ends are fixed to the core layer. An endless belt made of rubber, which is covered with front and back cover layers and made flat. 2. The rubber endless belt according to claim 1, wherein the front and back cover layers have a thickness of 0.2 mm or more. 3. The rubber endless belt according to claim 1, wherein the metal hook has a protrusion length of 2.0 to 6.0 mm from the end surface of the belt end portion. 4. The rubber endless belt according to claim 1, wherein at least one of the front and back cover layers is canvas. 5. A rubber belt having cover layers on the front and back sides of a core layer, wherein a plurality of core layers are provided at predetermined intervals in the width direction with respect to the longitudinal direction of the belt on the core layer from which the cover layers at each belt end are peeled off. After fixing the U-shaped metal hook, the adhesive is applied to the front and back surfaces of the belt after peeling and to the core body side surface of the peeled cover layer, a rubber sheet is attached, and the peeled cover layer is bonded. A method for manufacturing a rubber endless belt, characterized in that the end hooks of the respective belts are fitted into each other in a staggered manner, the pins are inserted into the holes to connect the both ends, and then the rubber is vulcanized. . 6. A cover rubber layer is provided on the surface of the core layer,
After fixing a plurality of U-shaped metal hooks at predetermined intervals in the width direction with respect to the longitudinal direction of the belt, the core body layer from which the cover rubber layer of the rubber belt having canvas on the back surface is peeled off, An adhesive is applied to the front and back surfaces of the core body after peeling and the surface of the cover rubber on the core body side, a rubber sheet is attached, and the peeled cover rubber is bonded to the belt surface side, while the back surface side is It is characterized by stacking canvas of the same material as the canvas, inserting pins into holes formed by fitting the hooks at the end of each belt in a staggered manner, connecting both ends, and then vulcanizing the rubber. Method for manufacturing rubber endless belt. 7. The endless method for a rubber endless belt according to claim 5, wherein the front and back cover layers have a thickness of 0.2 mm or more. 8. The endless method for a rubber endless belt according to claim 5, wherein the protruding length of the metal hook from the end face of the belt end is 2.0 to 6.0 mm.