JP2002087566A - Belt having projection and its manufacturing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a belt having a projection with a projection member firmly fixed to a support part. SOLUTION: This belt having the projection comprises the support part 4 stood integrally on the back face of the belt and the projection member 6 having a pair of leg parts 6a and 6a for outwardly engaging with or grabbing the support part 4 and fixed to the support part 4. A through-hole 5 is formed in the support part 4, and a leg connecting part 6b for interconnecting the pair of leg parts 6a and 6a is integrally formed on the projection member 6 by passing the connecting part 6b through the through-hole 5 and a filling the hole 5.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a belt with projections and a method for manufacturing the same.

[0002]

2. Description of the Related Art A belt with a projection having a projection on the back of the belt is widely used. The protrusions serve as partitions between articles when the articles are conveyed on the back of the belt, activate a sensor for detecting the running position of the belt, and push and move the articles.

[0003] The protrusion of the belt with the protrusion is
In addition to the one provided integrally on the back of the belt, if the thickness of the protrusion is increased to improve the strength of the protrusion, it becomes difficult to properly wind the belt around the small pulley, so a support section is provided on the back of the belt. In some cases, a protruding member is fixed to the support so that the support is fitted or pinched.

[0004]

However, as described above, in the belt with protrusions in which the support members are fixedly provided with the protrusion members, since the support portions and the protrusion members are separate bodies, the two members are only bonded by an adhesive or the like. In this case, there is a possibility that the projection member may fall off from the support portion.

The present invention has been made in view of the above points, and an object of the present invention is to provide a belt with a projection in which a projection member is firmly fixed to a supporting portion, and a method of manufacturing the same.

[0006]

According to the present invention, there is provided a support portion provided upright on a back surface of a belt, a through hole is provided, and a pair of legs for externally fitting or holding the support portion is provided. The leg member connecting portion for connecting the two leg portions is formed integrally with the projecting member fixed to the through hole by filling and penetrating the through hole of the support portion.

More specifically, the present invention has a support portion integrally provided on the back surface of the belt, and a pair of legs for externally fitting or holding the support portion and fixed to the support portion. A projection member,
A belt having a protrusion, wherein the support portion has a through hole, and the protrusion member fills and penetrates the through hole and connects the pair of leg portions. Are provided integrally.

According to the above construction, the leg connecting portion provided integrally with the projecting member fills and passes through the through hole provided in the supporting portion, and the projecting member is supported unless the supporting portion or the projecting member is damaged. Since the projection member does not fall off from the portion, the fixing state of the projection member to the support portion becomes extremely strong.

Here, when the number of through holes provided in the support portion is one, it is preferable that the outer shape is a polygonal shape such as a triangle or a quadrangle. This is because, when the support portion is provided with a single through-hole having a circular outer shape, the projection member can rotate around the leg connecting portion, and the installation state of the projection member is not stable. However, such inconvenience does not occur if the number of through holes provided in the support portion is plural,
In this case, the outer shape of the through hole may be circular.

[0010] Then, such a belt with projections, first,
A support having a through-hole forms a belt body integrally erected on the back of the belt, and the support is covered with a molten thermoplastic resin so that the through-hole of the support is filled, and the thermoplastic resin is formed. Can be manufactured by molding a projection member by solidifying the same.

[0011]

As described above, according to the present invention,
Since the leg connecting portion provided integrally with the projecting member is filled and communicates with the through hole provided in the supporting portion, and the projecting member does not drop off from the supporting portion unless the supporting portion or the projecting member is damaged, The member can be fixed to the support part in a very strong state.

[0012]

Embodiments of the present invention will be described below in detail with reference to the drawings.

(Embodiment 1) FIG. 1 shows Embodiment 1 of the present invention.
1 shows a belt according to the present invention. In this belt, a belt main body 1 is a toothed belt main body, and
And the protruding member 6 is fixed to the plate-shaped support portion 4.

The belt body 1 is made of a polyurethane composition, and has belt teeth 2, 2,. A core wire 3 made of aramid fiber as a tensile member is embedded along the bottom of each belt tooth 2 in a spiral shape having a pitch in the belt width direction.

The plate-like support portion 4 has a rectangular shape whose plate surface is oriented in the belt running direction, and has a circular through hole 5 at the center thereof.

The projection member 6 is made of acetal resin (POM)
And a pair of leg portions 6 for holding the plate-shaped support portion 4
a, 6a are provided, and a leg connecting portion 6b that fills and penetrates the through hole 5 of the plate-like supporting portion 4 and connects the two legs 6a, 6a is integrally provided. At the upper end of the protruding member 6, a protruding portion 6c for protruding the conveyed article is provided so as to protrude in the belt length direction.

That is, the projecting member 6 includes a pair of legs 6.
a, 6a sandwich the plate-shaped support portion 4 and the leg connecting portion 6
b is physically fixed to the plate-shaped support portion 4 by filling and penetrating the through-hole 5 and being connected to the two leg portions 6a, 6a. Note that the bottom of the protrusion member 6 is only in contact with the back surface of the belt, so that when the belt is wound around the pulley, the contact between the protrusion member 6 and the back surface of the belt is released, and the belt properly moves along the pulley. It will be wrapped around.

The belt with projections presses a conveyed object such as a paper sheet by a protruding member 6 provided on the back surface of the belt and horizontally conveys the conveyed object. It is used for

According to the belt with a projection having the above-described configuration, the leg connecting portion 6b provided integrally with the projection member 6 is filled and communicates with the through hole 5 provided in the plate-shaped support portion 4, thereby providing the plate-shaped support. Unless the portion 4 or the protrusion member 6 is damaged, the protrusion member 6 does not fall off from the plate-like support portion 4, so that the state in which the protrusion member 6 is fixed to the plate-like support portion 4 is extremely strong.

Next, a method for manufacturing the above-mentioned belt with projections will be described.

<Belt Body Forming Step> The urethane prepolymer composition is injected into a casting mold having a cavity in which a toothed belt body having a plate-like supporting portion provided on the back of the belt is formed, and heated. And cure. by this,
A belt body corresponding to the cavity shape is formed. The core is set in a casting mold in a tensioned state before the composition is injected, so that the core is embedded in the belt.

<Step of forming through-hole> A through-hole having a circular outer shape is provided at the center of the plate-like support portion.

<Injection Die Setting Step> Only the plate-shaped support portion provided with the through hole is inserted into the injection die for forming the projection member and set at a predetermined position.

<Resin Injection Step> A molten acetal resin (POM) is injected into an injection mold. At this time, the through hole is filled with the molten resin and the projection member is formed.

<Demolding Step> The protruding member attached to the belt is removed from the injection mold.

According to the above-described method of manufacturing a belt with projections, the plate-shaped support portion is covered with the projection member formed of a thermoplastic resin, and the through-hole provided in the plate-shaped support portion has two legs of the projection member. It will be filled with the leg connecting part connecting the parts.

(Embodiment 2) FIG. 2 shows a belt with transport projections according to Embodiment 2 of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals.

In this belt with a projection for conveyance, the outer shape of the through hole 5 provided in the plate-like support portion 4 is an equilateral triangle, and the leg connecting portion 6b that fills and communicates with the through hole 5 also corresponds thereto. It has a shape.

The other configuration is the same as that of the first embodiment.

According to the belt with a projection having the above structure, the rotation of the projection member 6 about the leg connecting portion 6b is restricted,
The installation state of the projection member 6 on the back of the belt becomes stable.

Other functions and effects are the same as those of the first embodiment.

(Embodiment 3) FIG. 3 shows a belt with transport projections according to Embodiment 3 of the present invention. The same parts as those in the first embodiment are denoted by the same reference numerals.

In this conveyor belt with projections, the plate-shaped support portion 4 is provided with two through-holes 5 and 5 having a circular outer shape so as to be arranged in the belt width direction, while the projection member has respective through-holes. A leg connecting portion 6b that fills and communicates with the through hole 5 is provided.

The other structure is the same as that of the first embodiment.

According to the belt with a projection having the above-described structure, similarly to the second embodiment, the rotation of the projection member 6 about the leg connecting portion 6b is restricted, and the projection member 6 is moved to the back of the belt. The installation state becomes stable.

Other functions and effects are the same as those of the first embodiment.

(Other Embodiments) First to Third Embodiments
In the above, the belt main body 1 is a toothed belt main body, but the present invention is not limited to this, and may be a flat belt, a V-belt, or the like.

In the first to third embodiments, the belt body 1 is made of thermosetting polyurethane.
It is not limited to this, and may be formed of rubber.

In the first to third embodiments, the protruding member 6 is made of acetal resin (POM). However, the present invention is not limited to this.
Made of polycarbonate resin (PC), acrylonotrile
Butadiene-styrene resin (ABS) may be used.

In the first to third embodiments, the plate-like support portion 4 is provided with the through hole 5, and the through hole 5 is connected to the leg connecting portion 6b.
In addition, a rod-shaped member such as a bolt or a pin may be attached to the plate-shaped support portion 4 in a penetrating state, and the rod-shaped member may be embedded in the projection member 6.

In the second embodiment, the outer shape of the through hole 5 is an equilateral triangle. However, the present invention is not limited to this, and may be a quadrangle or the like.

In the third embodiment, the plate-like support 4
Although two through-holes 5 and 5 are provided in this embodiment, the present invention is not particularly limited to this, and three or more through-holes may be provided.

In the third embodiment, the plate-like support 4
Although the two through-holes 5 and 5 are provided so as to be aligned in the belt width direction, the present invention is not particularly limited to this, and the through-holes 5 and 5 may be provided in the vertical direction of the plate-like support 4.

[Brief description of the drawings]

FIG. 1A is a front view and FIG. 1B is a side view of a belt with protrusions according to Embodiment 1 of the present invention.

2A is a front view and FIG. 2B is a side view of a belt with protrusions according to a second embodiment of the present invention.

3A is a front view and FIG. 3B is a side view of a belt with protrusions according to a third embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Belt main body 2 Tooth part 3 Core wire 4 Plate-like support part 5 Through hole 6 Projection member 6a Leg part 6b Leg connection part 6c Extrusion restriction part

Claims (4)

[Claims] A supporting member integrally provided on a back surface of the belt, and a projection member having a pair of legs for externally fitting or holding the supporting portion and fixed to the supporting portion. A belt with a protrusion, wherein the support portion is provided with a through hole, and the protrusion member is integrally formed with a leg connecting portion that fills and penetrates the through hole and connects the pair of leg portions. A belt with a protrusion, which is provided. 2. The belt with protrusions according to claim 1, wherein the number of the through holes provided in the support portion is one, and the outer shape thereof is a polygon. 3. The belt with protrusions according to claim 1, wherein the number of through holes provided in the support portion is plural. 4. A support member integrally provided on the back surface of the belt, and a projection member having a pair of legs for externally fitting or clamping the support portion and fixed to the support portion. A method of manufacturing a belt with projections, comprising forming a belt body in which a support portion having a through hole is integrally provided on a back surface of the belt, and melting the support portion so that the through hole of the support portion is filled. A method for producing a belt with projections, comprising forming a projection member by covering with a thermoplastic resin and solidifying the thermoplastic resin.