JPS5841412Y2 - Free size lagging material for pulleys - Google Patents

Description

[Detailed description of the invention] The present applicant has proposed that ``a rectangular or square or other small plate-shaped facing material made of ceramic material be vertically placed on the surface of a wide and long rubber lining material of a required wall thickness. Cut the lugging material with the rubber backing material, which is made by laying a large number of pieces horizontally and baking them into place, to the required dimensions vertically and horizontally. By directly adhering to the metal surface of belt drive pulleys, snap pulleys, bend pulleys, etc. of belt conveyor equipment, it is possible to repair and repair these various pulleys extremely easily at conveyance work sites. Particularly for large pulleys, it is possible to modify or repair the outer surface of the metal body of the pulley while it is suspended, which eliminates the operational hazards of replacing the heavy pulley itself. Avoiding this will also have a great effect.

There is no waiting time required for each pulley to be produced in a specialized factory, transported to the work site, replaced, and the belt conveyor device is put into operation, and furthermore,
We have already created a type of lagging material that can be called a one-size-fits-all lagging material that makes it possible to manually create the desired pulley at an extremely low cost through simple gluing work on site.

(Utility Application No. 53-160408, Patent Application No. 51-4383
(Refer to No. 9) By the way, in order to adhere the above-mentioned lugging material to the outer peripheral surface of the pulley, a rubber adhesive or a two-component epoxy resin adhesive is used on the outer peripheral metal surface of the pulley to bond the rubber of the lugging material. Conventionally, a method of directly bonding the quality backing material has been employed.

However, with such adhesive technology, the rubber backing material of the lugging material has already been vulcanized, so it is chemically stable and has little reactivity, and there is no primary bonding at the interface with the adhesive described above. It is difficult to generate a "bridge" by
As a result, sufficient adhesive strength could not be obtained, and the lagging material often peeled off from the pulley surface after a very short period of operation, resulting in an inoperable operation.

In order to avoid the above-mentioned drawbacks, as described in Japanese Utility Model Publication No. 53-31343, an unvulcanized rubber and a highly crystalline chloroprene adhesive layer are vulcanized and pressed together, and a vulcanized rubber having an integral adhesive layer is used. Although the board is already publicly known, the present invention, as outlined in (1) of the claims for utility model registration,
By further improving the conventional adhesion technology mentioned above, we have created a required type that has a specific configuration in which a large number of small ceramic plate-like facing materials are laid out vertically and horizontally on the surface of various metal pulleys of belt conveyor equipment, and the baking is fixed. A new method has been devised in which the one-size-fits-all type of gluing material is bonded to prevent peeling.

Hereinafter, the present invention will be explained with reference to the embodiment drawings.

In the figure, reference numeral 1 denotes a small plate-shaped facing material made of ceramic material, which is provided with joints 2, 2' in the vertical and horizontal directions on the surface of a wide and long rubber lining material 3 with a required wall thickness. I placed a lot of them and the baking is fixed.

On the back surface of the lining material 3, rubber layers 4 and 5 are integrally vulcanized and crimped to the back surface of the lining material 3, and an intermediary rubber layer R is integrally formed with the back surface of the lining material 3. It is vulcanized and crimped.

The upper rubber layer 4 is made of a material having relatively high compatibility with the lining material 3, and the lower rubber layer 5 is made of a metal rubber IJ.
The adhesive 6 to be applied to the surface of the adhesive 6 is selected to have a relatively high affinity for the adhesive 6.

Examples of two and three layers of each rubber layer constituting the intermediate rubber layer R are as follows.

(B) Case in which the intermediate rubber layer consists of two rubber layers Example 1 Upper rubber layer: Chloroprene rubber (CR) with a Ce content of around 30% Lower rubber layer: Acrylo, nitrile, butadiene copolymer rubber (NBR) Example 2 Upper rubber layer: Acrylo, nitrile, butadiene copolymer rubber (NBR) Lower rubber layer: Chloroprene rubber (CR) with a Cl content of around 30% (B) When the intermediate rubber layer consists of three rubber layers Example 3 Top and bottom rubber layers: Chloroprene rubber (CR) with α content of around 30% Middle rubber layer: Acrylonitrile, butadiene copolymer rubber (NBR) Example 4 Top and bottom rubber layers - Acrylonitrile ,
Butadiene copolymer rubber (NBR) Middle rubber layer: 0! Chloroprene rubber (CR) with a content of around 30% In all of the above four examples, natural rubber (NR) is used for the rubber backing material that is baked or fixed to the surface material, and the intermediate rubber layer and metal As the adhesive for the pulley, we used an adhesive whose main ingredient is natural rubber dissolved in a solvent and other general rubber adhesives.

Further, the thickness of the intermediate rubber layer was about 2 to 3 mm in all examples.

Furthermore, in the present invention, the actual size of the one-size-fits-all bagging material is the same as in the case of Utility Application No. 53-160408 and Japanese Patent Application No. 54-43839. About 1 tor x 2 meters, its thickness is 5
~10 mm.

If the lagging element on the surface is square, it is 25 mm x 25
mm, thickness is about 5 to 10 mm, and in the case of a rectangle, it is about 30 mm long x about 45 mm wide, and about 6 mm thick.

In addition, in the case of a rectangle, it is preferable to place the 45 mm horizontal side parallel to the direction of the axis (width direction) of the pulley.

According to the results of testing the above examples to see if the lagging material peels off from the metal pulley, there is no occurrence of peeling several months after adhesion to the metal pulley, which often occurs with conventional products. Therefore, it is expected that the lagging material will not peel off from the pulley surface for at least 2 to 3 years after adhesion.

As described above, in the present invention, the surface material is baked onto the surface, and a raised rubber layer consisting of a plurality of rubber layers is physically vulcanized and crimped with the backing O material on the back side of the fixed rubber backing material. The uppermost rubber layer of the intermediate rubber layer contains a material having relatively high compatibility with the rubber backing material, and the lowermost rubber layer of the intermediate rubber layer contains a material made of metal. Because we selected materials with relatively high affinity for the adhesive between the pulley and one surface, (a) the back side of the rubber backing material is in a "chemically stable" state with respect to the metal pulley surface. In other words, the two surfaces are "chemically very strongly bonded" to each other.

(b) By appropriately selecting and combining the thickness and hardness of the plurality of rubber layers constituting the above-mentioned intermediate rubber layer, the intermediate rubber layer can be made to have appropriate flexibility, and such an intermediate rubber layer can be By intervening between the back side of the rubber lining material and the surface of the metal pulley, which is difficult to fit directly,
As a result, the two surfaces adhere to each other in a state where they are easily adapted to each other, and the adhesion of both surfaces is "adhesion in a physically stable state."

Regarding the point mentioned in (a) above, there is a conventional technique disclosed in Japanese Utility Model Publication No. 53-31343, but this technique is based on the lowermost rubber layer of the intermediary rubber layer and the adhesive in the present invention. They should be different from each other in terms of the gist of the invention.

[Brief explanation of the drawing]

The attached drawings show one embodiment of the present invention, and Fig. 1 is a partial perspective view of an embodiment in which the intermediate rubber layer is made up of two rubber layers and is adhered to the surface of the pulley. Figure 2 is the first
This figure shows a part of a cross section taken perpendicularly to a plane including the central axis of the metal pulley along line A-A. In addition, in the figure, 1 is the facing material, 2, 2' are the vertical and horizontal joints,
3 is a backing rubber layer, 4 is a rubber layer, 6 is an adhesive layer, 7 is a metal pulley, and R is an intermediate rubber layer.

Claims (3)

[Scope of utility model registration request] (1) A small plate-shaped facing material made of ceramic material,
One set of pulleys with a rubber backing material that is laid out vertically and horizontally on the surface of a wide and long rubber backing material with the required wall thickness, and is sewn onto the surface. An intermediary rubber layer consisting of a plurality of rubber layers is integrally vulcanized and crimped with the rubber backing material on the back side of the rubber backing material on which the rubber backing material is spread. The top rubber layer in contact with the backing material is made of a material that is relatively compatible with the rubber backing material, and the bottom rubber layer of the intermediate rubber layer is made of a material that is compatible with the adhesive between the metal pulley surface and the rubber layer. In addition to selecting those with relatively high affinity,
By appropriately selecting and combining the thickness and hardness of each rubber layer constituting the intermediate rubber layer, the intermediate rubber layer has appropriate flexibility, and the rubber backing material is firmly adhered to the surface of the metal pulley. A one-size-fits-all lugging material with one set of pulleys. (2) The intermediate rubber layer is composed of two upper and lower rubber layers,
One of the upper and lower rubber layers is made of chloroprene rubber (CR) with a Cl content of around 30%, and the other rubber layer is made of acrylic rubber.
A one-size-fits-all lugging material for one set of pulleys as set forth in claim (1) of the utility model registration claim, characterized in that nitrile and butadiene copolymer rubber (NBR) is selected. (3) The intermediary rubber layer is composed of three rubber layers, top, middle, and bottom, and both the top and bottom layers are made of the same material, and the material of these two rubber layers is α. Chloroprene rubber (CR) with a content of around 30%, or acrylo, nitrile,
If either butadiene copolymer rubber (NBR) is selected and chloroprene rubber (CR) with an α content of around 30% is selected as the material for the two rubber layers on both sides, acrylonitrile, If butadiene copolymer rubber (NBR) is selected and acrylo, nitrile, butadiene copolymer rubber (NBR) is selected as the material for the two rubber layers on both sides, the material for the middle rubber layer will contain 0 content 30
A one-size-fits-all lugging material for a set of pulleys as set forth in claim (1) of the utility model registration claim, characterized in that approximately 30% of chloroprene rubber (CR) is selected.