JP4508586B2 - Conveyor belt - Google Patents

Description

  The present invention relates to a transport belt, and more particularly to a transport belt suitable for transporting a small and lightweight article over a short distance inside an article vending machine or other equipment.

  As this type of conveyor belt, a belt made of synthetic resin or a thin metal plate is provided with a small hole at a predetermined interval, and a small protrusion of a pulley is engaged with the small hole and driven. However, if a load is repeatedly applied to the small holes, the belt is easily torn, and if the strength is increased so as not to tear, the flexibility of the belt is inferior.

  Further, as a structure in which such a structure is applied to a woven belt, one described in JP-A-6-174015 is known. This is one in which engagement holes are formed in a state where warp yarns and weft yarns are pushed away intermittently in the length direction of the woven fabric.

  However, in this case, an engagement hole is formed by piercing a pointed pin or the like into a belt-shaped woven fabric that has been once woven uniformly to form an engagement hole, so the process of forming the engagement hole is complicated. In addition, there is a risk that the thread may be damaged when the pin is pierced.

In the state where the engagement hole is formed, the path lengths of the yarn in the vicinity of the engagement hole and the yarn separated from the engagement hole are greatly different, and the fabric is distorted. Further, when a tensile force is applied in the length direction, the warped yarn that has been pushed away tends to be straightened, and the engagement hole may be blocked.
JP-A-6-174015

  The present invention has been made in view of such circumstances, and is a woven belt that can be easily manufactured by weaving, and is always properly engaged with a pulley without deformation of the engagement hole portion. An object of the present invention is to provide a transfer belt that can be used.

  Thus, the present invention is a belt-like woven fabric formed by weaving warp yarns and weft yarns made of monofilaments of synthetic fibers, and a drive unit having no warp yarn is formed along both side edges of the belt-like fabric. The edge warp of the portion adjacent to the drive unit is a yarn in which a spun yarn of natural or synthetic fiber and a low-melting fiber are mixed, and the low-melting fiber is melted by heat. It is a feature. The conveying belt of the present invention may be formed in an annular shape by connecting both ends.

  The conveying belt according to the present invention is a woven belt that can be easily manufactured by weaving, and the driving portion is always properly engaged with the pulley, and the driving portion is not deformed by an external force. .

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows a conveying belt 1 according to the present invention. The conveying belt 1 is made of a belt-like woven fabric, and a conveying portion 2 which is a main portion of the conveying belt 1 is provided at the center thereof. The drive unit 3 is formed on both sides of the transport unit 2, and the ear part 4 that forms the side edge of the transport belt 1 is formed on the outer side of the drive unit 3.

  FIG. 2 is an enlarged view of a part of the conveying belt 1, and the belt-shaped fabric constituting the conveying belt 1 is formed by weaving warp yarns 5 and weft yarns 6 into a belt shape. Yes. In the drawings, the weave structure is a plain weave, but is not limited to this, and may be a weave structure such as a twill weave.

  In the present invention, the transport section 2 and the ear section 4 have a woven structure woven with the warp threads 5 and the weft threads 6, but in the drive section 3, only the weft threads 6 are long. It is continuous and there is no warp yarn 5.

  That is, in the present invention, an article to be transported is placed on the transport unit 2, and the drive unit 3 has the same function as the engagement hole in the conventional example. When the small protrusions of the pulley are engaged and driven, the conveying belt 1 moves along a predetermined path and conveys the placed article.

  The ears 4 of the conveying belt 1 are not necessarily required in the present invention, but by weaving the wefts 6 with the warps 5 in the ears 4, the wefts 6 in the driving unit 3 are constrained to be substantially parallel. It is possible to transmit the driving force by the pulley to the conveying belt 1 accurately.

  In the present invention, it is preferable to use a relatively rigid monofilament yarn as the weft yarn 6. The spun yarn and the multifilament yarn are too flexible, and the shape of the drive unit 3 that is not woven with the warp yarn 5 cannot be maintained, and it may be entangled with the small protrusion of the pulley or the drive force may not be transmitted appropriately.

  The weft yarn 6 does not have to be made of only monofilament yarn, and for example, a yarn obtained by winding a spun yarn or a multifilament yarn around the monofilament yarn can be used.

  The material of the warp yarn 5 is not particularly limited, and a spun yarn, a multifilament yarn, a crimped yarn, or the like can be used. However, a synthetic multifilament yarn that is flexible and hardly fluffs is used. Is preferred.

  Of the warp yarns 5, the edge warp yarn 5 a adjacent to the drive unit 3 is a yarn in which a spun yarn of natural or synthetic fiber and a low melting point fiber are mixed, and the low melting point fiber is heated. It is preferable that it is melted.

  In the conveyor belt 1 of the present invention, since the warp yarn 5 is not woven in the drive unit 3, the warp yarn 5 adjacent thereto is easily misaligned and easily moves toward the drive unit 3. In particular, when a monofilament yarn is used as the weft yarn 6, the monofilament yarn is slippery and thus more easily misaligned.

  Therefore, as the edge warp yarn 5a adjacent to the drive unit 3, a spun yarn having a high frictional resistance is used to suppress misalignment during weaving, and a low melting point fiber is mixed with the spun yarn and ironed after weaving. It is preferable to fix the edge warp yarn 5a to the weft yarn 6 by melting the low-melting fiber by heating, for example.

  When the edge warp yarn 5a is composed only of spun yarn, it is difficult to prevent misalignment during use, and when all the edge warp yarns 5a are composed of low melting point fibers, The part adjacent to the drive unit 3 becomes extremely hard due to melting, which is not preferable. Therefore, it is preferable to use a mixture of spun yarn and low melting point fiber.

  As a mode of mixing the spun yarn and the low-melting fiber, a blended yarn in which the low-melting fiber is mixed in the spun yarn can be used, and a normal spun yarn and a yarn made of the low-melting fiber are twisted together. Yarn can also be used.

  The conveying belt 1 of the present invention can be in a form corresponding to the mode of use thereof. However, in many cases, an annular belt is used between pulleys. can do. In this case, the long conveying belt 1 may be cut into a predetermined length and both ends thereof may be connected to form an annular shape, or woven by continuous bag weaving in the width direction of the conveying belt 1, A seamless annular conveying belt 1 can be manufactured by rounding the width.

  3 and 4 show the use state of the conveying belt 1 of the present invention, and the annular conveying belt 1 is stretched between two pulleys 7 and 7. A small protrusion 8 for engagement protrudes from the peripheral surfaces of the pulleys 7 and 7, and the small protrusion 8 engages between the wefts 6 of the driving unit 3 of the conveying belt 1, and from the pulleys 7 and 7. A driving force is transmitted to the conveying belt 1 via the conveying belt 1 and the weft 6 of the driving unit 3.

  According to the present invention, the conveying belt 1 has a woven structure and can be easily manufactured by a technique of weaving a normal woven fabric, and forms an engaging portion for the small protrusion 8 of the pulley 7. No special process is required.

  Further, since the warp yarn 5 and the weft yarn 6 constituting the woven structure extend straight in the conveying belt 1 and are not bent unnaturally, the conveying belt 1 may be distorted as a belt. In addition, the shape of the engaging portion is not impaired by the pulling force.

  Further, in the drive unit 3, the weft thread 6 extends in parallel in the width direction at a small interval, so that the small protrusion 8 of the pulley 7 can be engaged at any position, and the small protrusion 8 in the drive unit 3 can be engaged. There is no need to adjust the spacing.

Plan view of the conveyor belt of the present invention The top view which expanded and showed a part of belt for conveyance of the present invention The perspective view which shows the use condition of the belt for conveyance of this invention The side view which shows the use condition of the belt for conveyance of this invention

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Conveying belt 2 Conveying part 3 Drive part 5 Warp thread 5a Edge warp thread 6 Weft

Claims (2)

A belt-shaped fabric formed by weaving a warp yarn (5) and a weft yarn (6) made of a monofilament yarn of synthetic fiber, and a drive unit (3 having no warp yarn (5) along both side edges of the belt-shaped fabric. The edge warp yarn (5a) adjacent to the drive portion (3) is a yarn in which a spun yarn of natural or synthetic fiber and a low-melting fiber are mixed, Conveying belt, wherein melting point fiber is melted by heat The conveying belt according to claim 1, wherein both ends are connected and formed in an annular shape.

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