CN203543262U

CN203543262U - Flat belt

Info

Publication number: CN203543262U
Application number: CN201320372111.6U
Authority: CN
Inventors: 平良卓也
Original assignee: Nitta Corp
Current assignee: Nitta Corp
Priority date: 2013-06-26
Filing date: 2013-06-26
Publication date: 2014-04-16
Anticipated expiration: 2023-06-26

Abstract

The utility model provides a flat belt which firmly bonds layers so as to prevent the layers from being stripped and prevent the electrification of the flat belt, and does not have a situation that materials conveyed on the flat belt are polluted due to powder abrasion. A flat belt which can prevent joint parts from suffering from cut-off accident when two end faces machined on the oblique planes of the flat belts are bonded to form an annular shape by butt joint is provided. In a flat belt which takes a polyamide membrane as a core body and is provided with rubber layers on the two surfaces, polyamide canvas is arranged between the polyamide membrane and the rubber layers, a phenolic resin conductive adhesive layer is arranged between the rubber layer and the polyamide canvas, and a resorcin adhesive layer is arranged between the polyamide membrane and the polyamide canvas. The two end faces of the flat belt which is machined to form a shape of an oblique plane are mutually in butt joint, and bonded to form an annular shape by aid of the adhesive layers, an isocyanate adhesive layer is clamped between the rubber layers which are in butt joint, and a resorcin adhesive layer is clamped between the polyamide membrane and the polyamide canvas.

Description

Flat rubber belting

Technical field

The utility model relates to the flat rubber belting that a kind of transmission with anti-charging property is used.

Background technology

All the time, the flat rubber belting of using as transmission and known flat rubber belting as described below (TOHKEMY 2011-133029 communique), for example this flat rubber belting possess be embedded with stretched PTFE film or heart yearn tension stress layer, be bonded in this tension stress layer canvas, be bonded in the rubber layer of this canvas.

Utility model concise and to the point

Utility model problem to be solved

But above-mentioned existing flat rubber belting exists problem as described below, in the case of a little less than the bonding force of each layer, in use easily produce because peeling off the destruction causing.

In addition, there is problem as described below, the band circlewise bonded to each other end face of above-mentioned flat rubber belting is also easily produced at its connector portions place because of the not enough cut-out causing of bonding strength.

In addition, if make, the band bonded to each other both ends of the surface of described flat rubber belting and that become ring-type is advanced between roller, the back side of flat rubber belting repeatedly contact with the roller that drives this flat rubber belting, separation, or produce and skid and make static hysteresis stay the inside of flat rubber belting between roller and flat rubber belting.

Charged flat rubber belting produces absorption dust or rubbish and makes that load pollutes, this load (load that such as paper etc. are light-duty) is adsorbed in flat rubber belting itself and cannot obtains the problems such as original transmission performance.In addition, in the case of flat rubber belting with voltage high, because the generation of flash of light (spark) causes the fault of electrical system and has the danger etc. of fire.

Thereby, in order not make at flat rubber belting savings static, consider flat rubber belting self to there is electric conductivity and for example use carbon black as the conductive material of high conductivity, but in the case of the rubber layer cooperation carbon black of carrying face that forms described flat rubber belting, rubber becomes black, owing to polluting load with this abrasion powder, not by preferably, in addition, be difficult to find to be attached to impurity or pollution on flat rubber belting surface.

But, if use described rubber layer to use the colorful rubber beyond the black of mismatching carbon black, rubber layer is difficult to have electric conductivity, therefore exploitation has anti-charged carry strap as described below (TOHKEMY 2002-68439 communique), it comprises the core body consisting of fibrous material, the covering rubber layer that forms carrying face and this core body and covers the adhesive rubber layer between rubber layer, in the carry strap of using colorful rubber as covering rubber layer, described adhesive rubber layer is combined with carbon black.

Utility model content

The purpose of this utility model is, provides bonding and prevent peeling off, prevent the charged of flat rubber belting and the flat rubber belting of the situation of the load on flat rubber belting can occurring to be polluted by abrasion powder of each interlayer securely between each layer simultaneously.

In addition, its object is, the flat rubber belting that prevents the cut-out accident of connector portions in the time of can being bonded into ring-type in both ends of the surface docking each other of the flat rubber belting that makes to process on inclined-plane is provided.

Solution

The present utility model is artificial solves above-mentioned problem and the research that deepens continuously, until complete the utility model.That is, flat rubber belting of the present utility model has following structure.

(1) a kind of flat rubber belting, it is equipped with rubber layer using PA membrane as core body and on two surfaces of this PA membrane, described flat rubber belting is characterised in that, between described PA membrane and rubber layer, be equipped with polyamide canvas, between described rubber layer and polyamide canvas, be provided with that to have coordinated the phenolic resins of conductive material be conductive adhesive layer, between described PA membrane and polyamide canvas, being provided with resorcinol is adhesive phase, the both ends of the surface that are processed into the flat rubber belting of inclined plane shape are docked mutually, and be bonded into ring-type by adhesive phase, now, rubber layer in docking has mutually clamped isocyanate-based adhesive phase each other, and PA membrane each other and polyamide canvas to have clamped each other resorcinol be adhesive phase.

(2), according to the flat rubber belting (1) described, wherein, the surface of described rubber layer has the tone beyond black.

Utility model effect

According to flat rubber belting of the present utility model, resorcinol is set is adhesive phase on two surfaces using PA membrane as core body and arrange polyamide canvas, and then on polyamide canvas, arrange that to have coordinated the phenolic resins of conductive material be conductive adhesive layer and arrange rubber layer, therefore between described PA membrane and polyamide canvas and between described polyamide canvas and rubber layer by bonding securely, thereby can prevent each layer peel off, and can prevent the charged of flat rubber belting.

In addition, in the time of can preventing from making the both ends of the surface of the described flat rubber belting that is processed as inclined plane shape mutually dock and be bonded into ring-type by adhesive phase, the connector portions of both ends of the surface is adhesive phase having clamped isocyanate-based adhesive phase between rubber layer and rubber layer, clamped resorcinol between PA membrane and polyamide canvas, therefore connector portions is by bonding securely, thereby can prevent from cutting off because of the not enough band at connector portions place causing of bonding strength.

In addition, the rubber layer of described flat rubber belting can be formed as to light color, can easily find out pollution and the impurity on rubber layer surface, and the situation of the load on flat rubber belting can not occur to be polluted by abrasion powder.

Accompanying drawing explanation

Fig. 1 is the concise and to the point fracture stereogram that represents an embodiment of flat rubber belting of the present utility model.

Fig. 2 is the concise and to the point cutaway view that represents the junction surface of an embodiment of flat rubber belting of the present utility model.Description of reference numerals is as follows:

1 PA membrane

2 polyamide canvas

3 rubber layers

4 phenolic resins are conductive adhesive layer

5,7 resorcinols are adhesive phase

6 isocyanate-based adhesive phases

10 flat rubber beltings

The specific embodiment

Below, with reference to Fig. 1, the related flat rubber belting of an embodiment of the present utility model is described.As shown in Figure 1, the flat rubber belting 10 of present embodiment is using PA membrane 1 as core body, and on two surfaces of core body, arrange the flat rubber belting of rubber layer 3, wherein, between described PA membrane 1 and rubber layer 3, be equipped with polyamide canvas 2, between described rubber layer 3 and polyamide canvas 2, being provided with phenolic resins is conductive adhesive layer 4, and between described PA membrane 1 and polyamide canvas 2, being provided with resorcinol is adhesive phase 5.

The core body of flat rubber belting 10 of the present utility model that is described PA membrane 1 consist of a kind of nylon of polyamide synthetic resin, for example, enumerate the mixture, nylon 66 of nylon 6, nylon 66, nylon 6/66 copolymerization, nylon 6 and nylon 6/66 copolymerization and the mixture of nylon 6/66 copolymerization etc.

It should be noted that, in the above-mentioned material that also can use to PA membrane 1, suitably add the additives such as heat-resisting stabilizing agent, anti-live agent, plasticizer, impact improver, intensive, processing aids.

As shown in Figure 1, on two surfaces of described PA membrane 1, being respectively equipped with resorcinol is adhesive phase 5, and arranges polyamide canvas 2.

This resorcinol is that adhesive phase 5 is by bonding securely to PA membrane 1 and polyamide canvas 2.Resorcinol is that the main component of adhesive is resorcinol.

As described polyamide canvas 2, do not limit especially, enumerate the mixture of mixture, nylon 66 and nylon 6/66 copolymerization of such as nylon 6, nylon 66, nylon 6/66 copolymerization, nylon 6 and nylon 6/66 copolymerization etc.

As shown in Figure 1, described rubber layer 3 is positioned at the outermost layer on two surfaces of flat rubber belting 1, as carrying or the transmission of goods.As this rubber layer 3 and not restriction especially of the rubber using, for example, enumerate natural rubber, butyl rubber, polyurethane rubber, ethylene-propylene rubber, chloroprene rubber, acrylonitrile-butadiene rubber, acrylic rubber, SBR styrene butadiene rubbers, CSM, silicone rubber etc.

As shown in Figure 1, between described rubber layer 3 and described polyamide canvas 2, be provided with that to have coordinated the phenolic resins of conductive material be conductive adhesive layer 4.

This phenolic resins is conductive adhesive layer 4 by bonding securely with described polyamide canvas 2 described rubber layer 3, and prevents the charged of flat rubber belting 10 by the conductive material of working good.

As described conductive material, as long as having the material of high conductivity, not restriction especially, for example, enumerates as a kind of acetylene black of carbon black, furnace black etc., or the metal powder such as such as copper, aluminium, zinc, titanium, iron, silver.

It is adhesive that above-mentioned conductive material is matched with phenolic resins, and between described rubber layer 3 and described polyamide canvas 2, making phenolic resins is conductive adhesive layer 4.This phenolic resins is that the use level of conductive adhesive layer 4 does not limit especially, but preference is as with respect to phenolic resins being adhesive 100 weight portions, coordinates conductive material 5～60 weight portions.

As described above, in flat rubber belting 10 of the present utility model, it is conductive adhesive layer 4 and make flat rubber belting 10 have electric conductivity that conductive material is matched with to phenolic resins, therefore as in the past, also can to the surperficial rubber layer 3 of flat rubber belting 10, not coordinate conductive material (carbon black), therefore can make the surface of rubber layer 3 there is black tone arbitrarily in addition.

For example, if make the surface of the rubber layer 3 of flat rubber belting 10, be the light color beyond black, make the surperficial impurity of flat rubber belting 10, pollution become eye-catching and can easily find out, therefore prevent that the pollution to product in handling process from becoming easy.

In addition, in flat rubber belting 10 of the present utility model, thickness does not limit especially, but the thickness of preferred polyamide film 1 is 0.2～2.0mm, and preferably the thickness of one-sided rubber layer 3 is 0.1～3.0mm.

As described above, using PA membrane 1 as core body and on two surfaces of this core body, arranging rubber layer 3 and between described PA membrane 1 and rubber layer 3, arranging in the flat rubber belting 10 of polyamide canvas 2, it is conductive adhesive layer 4 that phenolic resins is set between described rubber layer 3 and polyamide canvas 2, it is adhesive phase 5 that resorcinol is set between described PA membrane 1 and polyamide canvas 2, each layer by bonding securely thus, thereby can prevent from easily peeling off for each layer in the use procedure of band.

As shown in Figure 2, above-mentioned flat rubber belting 10, by its both ends of the surface being docked mutually and to carry out joint by adhesive phase bonding, can be formed as ring-type thus.

As shown in Figure 2, the both ends of the surface of flat rubber belting 10 are processed into inclined plane shape.This processing does not limit especially, and grinding to form slope (b/a) is 1/20～1/60 left and right.

The

rubber layer

3,3 of flat rubber belting 10 is each other by isocyanate-based adhesive phase 6 and bonded, in addition, the

PA membrane

1,1 of flat rubber belting 10 each other and

polyamide canvas

2,2 by resorcinol, be adhesive phase 7 and bonded each other.

As described above, if the both ends of the surface that make flat rubber belting 10 are adhesive phase 7 and be bonded into mutual docking by described isocyanate-based adhesive phase 6 and resorcinol, become the flat rubber belting that is bonded into ring-type.In this case, connector portions is adhesive phase 7 and by bonding securely by isocyanate-based adhesive phase 6 and resorcinol.

Claims

1. a flat rubber belting, it is equipped with rubber layer using PA membrane as core body and on two surfaces of this PA membrane, and described flat rubber belting is characterised in that,

Between described PA membrane and rubber layer, be equipped with polyamide canvas, between described rubber layer and polyamide canvas, be provided with that to have coordinated the phenolic resins of conductive material be conductive adhesive layer, between described PA membrane and polyamide canvas, being provided with resorcinol is adhesive phase

And the both ends of the surface that are processed into the flat rubber belting of inclined plane shape are docked mutually, and be bonded into ring-type by adhesive phase,

Now, at the rubber layer of mutually docking, clamped each other isocyanate-based adhesive phase, and PA membrane each other and polyamide canvas to have clamped each other resorcinol be adhesive phase.

2. flat rubber belting according to claim 1, wherein,

The surface of described rubber layer has the tone beyond black.