JPH04277112A - Method of jointing conveyer belt - Google Patents

Abstract

PURPOSE:To provide a method of extremely easily jointing conveyer belts by finger jointing. CONSTITUTION:Tensile bodies 2 in the opposed ends of conveyer belts to be jointed to each other are exposed and formed on both ends with a plurality of wedge-like notches 3 fitting each other in the male and female relationship. Then, while the tip of the wedge-like projection and the bottom of the wedge- like recess ere fitted in each other to joint the conveyer belts in the planar form while necessary reinforcing cloths and cover rubbers 1 are laminated on the front and rear of the connection of the tensile bodies to be unified therewith, so that the fitting position can be easily set with an allowance by the notches.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for joining conveyor belts, and more particularly to the completion of a finger joining method.

0002

BACKGROUND OF THE INVENTION It is almost impossible to form a material into an endless shape from the beginning. Therefore, when a conveyor belt is mounted on a roll, both ends of a long rubber belt are joined in an endless manner on site. The means for joining this conveyor belt is the overlap method, in which tensile bodies are stacked and reinforcing cloth and cover rubber are layered on both the front and back sides to integrate them, or the tensile bodies are butted together, and reinforcing fabric and cover rubber are placed on both the front and back sides. A butting method in which the tensile body is stacked and integrated, or a number of wedge-shaped notches are provided in the tensile body that fit into each other in a male-female relationship, and these are fitted together, and reinforcing cloth and cover rubber are layered on both the front and back sides to form an integrated structure. The finger method, etc., is known.

[0003] By the way, in the case of thin conveyor belts with one or two layers of tensile material, the above-mentioned overlap method and butt method have a problem in that the thickness of the joint part becomes stepwise thicker than other parts. unsuitable, often by finger joints.

0004

[Problems with the prior art] However, when performing the above-mentioned finger joining, the wedge-shaped protrusions A...A that fit into each other extend thin and long as shown in FIG. They rarely fit together perfectly, and if they are forced to fit together, they have the disadvantage of creating wrinkles or partially overlapping. Furthermore, in order to solve this problem, conventionally the molded wedge-shaped protrusions are fitted together and then partially cut for adjustment, but this method has the disadvantage of being extremely time consuming and inefficient.

[0005]

[Problems to be Solved by the Invention] In view of the above-mentioned problems, the present invention has been made for the purpose of providing a method for joining conveyor belts that can be performed very easily when joining conveyor belts by finger joining. It is something that

[0006]

[Means for Solving the Problems] That is, the conveyor belt joining method of the present invention exposes the tension members at opposite ends of the conveyor belts to be joined together, and establishes a male-female relationship between the ends of the tension members. In addition to forming a number of wedge-shaped notches that fit together, a notch is provided at the tip of the wedge-shaped convex portion and the back end of the wedge-shaped recess, and then both the notches are fitted and joined into a planar shape, and the tensile body It is characterized by laminating and integrating the necessary reinforcing cloth and cover rubber on the front and back surfaces of the connection part.

[0007]

[Example] Next, an example of the present invention will be described. 1 to 4 are cross-sectional views showing steps for carrying out the method of the present invention. As shown in FIG. 1, the tensile members 2, 2 at opposite ends of the conveyor belts 1, 1, which are joined to each other, are exposed, and both tensile members 2, 2 ends are After forming a large number of wedge-shaped notches 3...3 that fit into each other in a male-female relationship as shown in FIG. As shown in the example, circumferential notches 4, 4 are provided, and then both the notches are fitted to form a planar joint as shown in FIG. Cloth 5
and a step of laminating and integrating the cover rubber 6.

[0008] In the above, the same method as the conventional method is used until the wedge-shaped notches 3...3, which fit in a male-female relationship, are provided in the tensile member 2, but when forming the notches 4, 4, circular In the case of a circumferential shape, a tool such as a ``half-moon cutter'' is used that allows for a clean cut without leaving any lint on the inside surface of the hole. Note that a hole of an arbitrary shape may be punched using a punch or the like. Further, the notches 4, 4 may be simultaneously formed by punching, for example, with a press, at the same time as the wedge-shaped notches 3...3 are formed.

[0009] Next, as Example 1, one ply of aramid fiber blind weave tensile material was used as the tensile material, and the width was 900 mm.
By forming 15 wedge-shaped protrusions on a belt, drilling holes with a diameter of 6 mm in half-moon shapes at the tips and ends of the wedges, and joining them together, there was no need for the joining adjustment work, which conventionally took well over 30 minutes. The mating work was completed in minutes.

Next, the strength of the joint part of the conveyor belt with the cover rubber adhered was measured, and the results are shown in Table 1.
As a result, the effectiveness of the present invention was confirmed. In Table 1, the strength efficiency is the tensile strength of the joint section expressed in % when the strength of the tensile body is taken as 100. Further, in Table 1, Comparative Example 1 shows the results when the same belt as Example 1 was joined without having the notch 4. In addition, Example 2 is the same belt as Example 1 in which 10 wedge-shaped protrusions are formed, and Example 3 is the same belt as Example 1 in which 10 wedge-shaped protrusions are formed.
Example 4 shows the same belt with the same wedge-shaped projections as Example 2,
The comparative examples correspond to the examples indicated by the same numbers, and show the results without the notch 4.

0011 Table 1

0012

[Operation] In this invention, the finger joint portion has notches formed at the tips 3A and 3B of the uneven portion of the wedge-shaped notch 3, so when the finger joints are arranged so as to mesh with each other, the mutual meshing occurs by the amount of the notches. This increases the margin of adjustment. Therefore, almost no new adjustment cutting is required.

[0013]

[Effects of the Invention] As explained above, in this invention, notches are formed at the tip and back end of the wedge-shaped uneven portion when finger-joining the tensile member, so there is less engagement adjustment and it is very easy to use. Finger joining can be performed quickly. Furthermore, since there are almost no gaps or overlapping portions in the finger joints, the strength of the joints is also excellent.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing an embodiment of the invention.

FIG. 2 is a plan view showing an embodiment of the invention.

FIG. 3 is an enlarged plan view of main parts showing an embodiment of the invention.

FIG. 4 is a plan view showing an embodiment of the invention.

FIG. 5 is a plan view of a conventional example.

[Explanation of symbols]

1 Conveyor belt 2 Tensile body 3 Wedge-shaped notch 3A Tip 3B Back end 4 Notch part

Claims (1)

[Claims] 1. Tensile members at opposing ends of conveyor belts to be joined to each other are exposed, and a number of wedge-shaped cuts are formed in both tension members to fit in a male-female relationship with each other, and the wedge-shaped convex A notch is provided at the tip of the section and at the back end of the wedge-shaped recess, and then both notches are fitted and joined into a flat shape, and the necessary reinforcing cloth and cover rubber are laminated on the front and back surfaces of the tensile member connection part and integrated. A method for joining conveyor belts, which is characterized by the following: