JP2003128219A - Straight belt conveyor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a straight belt conveyor which (1) can be installed without any skill, (2) has a sufficient meandering preventive effect without any damages even at a part of a large belt shifting force, and (3) has a relatively simple configuration and can use a small diameter pulley required for transferring a small article between conveyors, and transfer the article from the belt side. SOLUTION: A conveyor belt 1 is stretched between pulleys P and P, and a large number of narrow and hard bead components 11 are disposed in one row over the entire circumference of an outgoing passage surface in the longitudinal direction of the belt of a belt body 10 in the conveyor belt 1. The bead components 11 is regulated so as not to be moved in the right-and-left direction with respect to the belt longitudinal direction by a guide 2 disposed in an extending mode in the belt longitudinal direction.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a linear belt conveyor having a meandering prevention function.

[0002]

2. Description of the Related Art The following is a conventional linear belt conveyor having a meandering prevention function. A. The pulley on which the conveyor belt is stretched has a drum-like shape with a medium thickness (crown).

In this means, the traveling position of the belt is determined by various factors that influence the traveling position of the belt such as distortion of the frame and the belt itself, alignment of the pulleys, and the balance between the guide effect of the traveling position by the pulley crown. The adjustment requires skill, and even after the adjustment, the traveling position of the belt may be moved due to the deviation of the position of the load or the stretching of the belt. (Disadvantage) B. As shown in FIG. 11, a traveling guide guide 91 made of polyurethane, PVC, or the like is welded or adhered to the lower surface of the conveyor belt 90, and the guide 91 is fitted into a guide groove 93 provided in the belt support plate 92. , Keep the running position.

In this means, the guide 91 must be bendable at the pulley portion, and it has been necessary to use a soft elastomer such as polyurethane or PVC. However, with such a soft material, it is not possible to provide sufficient rigidity to support the lateral offset force generated in the entire conveyor belt 90, and a sufficient effect is obtained at a place where a large belt offset force is generated. However, the guide 91 may be worn or peeled off even when it is used in a general conveyor, and the guide 91 may deviate from the guide groove 93. (Disadvantage) C. As shown in FIG. 12, a bead 94 made of polyurethane is sewn, adhered or welded to both edges of the conveyor belt 90, and the bead 94 is sandwiched from above and below by bearings 95 arranged on both sides of the conveyor, and the bead 94 is laid in the lateral direction of the belt. It is equipped with a structure that regulates movement.

In this means, in order to clamp the conveyor belt 90, a plurality of rows of bearings 95 are provided on the frames on both sides of the conveyor.
It is necessary to install the bead 94 on the belt support plate 92.
It is necessary to have a remarkably complicated structure such as a structure that avoids interference with the pulley. (Disadvantage) Further, since the conveyor belt 90 itself is thin and has excellent flexibility, it is possible to use end pulleys having a small diameter. However, when the beads 94 are provided at both ends, the conveyor belt 90
The flexibility of the bead 94 is determined by the flexibility of the bead 94, and the pulley required for transferring a small load between conveyors cannot be used. ... (Disadvantage) Furthermore, beads 94 and bearings on both edges of the conveyor belt
Since there are 95 rows, it is not possible to transfer articles from the side of the belt. ···(Disadvantage)

[0006]

In view of the above, according to the present invention, it is possible to install the apparatus without requiring skill and to have a sufficient meandering-preventing effect without damage even at a place where a large belt biasing force is generated, and the structure is relatively simple. It is an object of the present invention to provide a linear belt conveyor that can use a small-diameter pulley required for transferring small-sized stacks between conveyors and can transfer articles from the side of the belt.

[0007]

Means for Solving the Problems (Invention according to Claim 1)
In the linear belt conveyor of the present invention, the conveyor belt is stretched between the pulleys, and the conveyor belt has a large number of narrow and hard bead structures in the belt length direction of the belt body on the forward path surface. The bead structure is arranged in a line over the entire circumference, and the bead structure is regulated by a guide arranged so as to extend in the belt length direction so as not to move left and right with respect to the belt length direction. (Invention of Claim 2) The linear belt conveyor of the present invention relates to the invention of Claim 1, wherein the bead structure is arranged along one edge of the belt main body or in the center of the belt length direction. They are arranged according to the line. (Invention of Claim 3) The linear belt conveyor of the present invention relates to the invention of Claim 1 or 2, wherein the width of the bead structure is set to 4 to 50% of the diameter of the pulley. (Invention of Claim 4) The linear belt conveyor of the present invention relates to the invention of any one of Claims 1 to 3, wherein the bead structure is made of metal or hard synthetic resin.

The operation and effect of the linear belt conveyor of the above invention will be described in the section of the following embodiments of the invention.

[0009]

DETAILED DESCRIPTION OF THE INVENTION The present invention will be described below with reference to the drawings showing the embodiments. [Embodiment 1] FIG. 1 is a plan view of a linear belt conveyor C according to an embodiment of the present invention. (Regarding Overall Constitution of Linear Belt Conveyor C) In the linear belt conveyor C, as shown in FIGS. 1 and 4, the conveyor belt 1 is stretched between the pulleys P and P, and the conveyor belt is 1 is configured such that a large number of narrow and hard bead forming bodies 11 are arranged in a line along one edge of the belt body 10 over the entire circumference of the outward path, and the bead forming bodies 11 are arranged in the belt length direction. The guides 2 arranged so as to extend are regulated so as not to move to the left and right with respect to the belt length direction. (Constituent members of conveyor belt 1) Belt body 10
Is a belt-shaped product in which polyester canvas is used as a core and thermoplastic polyurethane is used as the surface material of the transport surface, and the end portions are connected to each other. As shown in FIG. 3, the belt body 10 is provided with a large number of through holes 10a and 10b for attaching a large number of bead forming bodies 11 near one edge thereof.

As shown in FIG. 2 and FIG. 3, the bead structure 11 has a rectangular plate-like portion 12 and a thick plate having a trapezoidal shape in a side view, which is formed at the center of the plate-like portion 12 in the longitudinal direction. The portion 13 (protruding portion) is integrally formed of hard synthetic resin or metal, and the plate-like portion 12 has a locking portion on one end side thereof as shown in FIG.
12a and an engaging hole 12b on the other end side.
This bead structure 11 has a through hole 10a as shown in FIG.
Fit the locking portion 12a into the through hole 10b and the engaging hole.
Each part is locked to the belt main body 10 by fitting the pin 14 into 12b. Where this bead structure
11 is, for example, the plate-shaped portion 12 has a width in the belt length direction of 8 m.
m, length: set to 30 mm, and thick part 13
Can be set to a height of 7.5 mm and a side surface inclination angle of 70 ° (the width of the bead structure is preferably set to 4 to 50% of the diameter of the pulley).

The bead structure 11 is arranged at a constant pitch with respect to the belt body 10. The pitch is determined in consideration of the width of the conveyor belt to be used and the strength of the biasing force.

Further, the bead structure 11 may be fixed to the belt body 10 by screwing or stitching in addition to the above-described attachment mode, and further, may be adhered by an adhesive or the like, or fixed by welding or the like. (Construction of Guide 2) As shown in FIG. 4, the guide 2 is formed by bending a plate-shaped hard resin or steel plate, and has a mounting portion 21 having an L-shaped cross section and the mounting portion 21.
It is composed of a guide main body 20 extended to.

As shown in FIG. 4, the guide main body 20 is bent so as to follow the upper surface of the plate-like portion 12 and the substantially trapezoidal surface of the thick-walled portion 13, and the guide 2 is attached via the attachment portion 21. When mounted on the square pipe 3 (fixed portion such as a conveyor frame: not limited to the square pipe), both inner surfaces of the inclined portions of the guide main body 20 come into contact with both inclined portions of the thick portion 13. It has become.

The guide 2 is, for example, bolted to the square pipe 3 so that its position can be adjusted to some extent.

Further, the materials for the guide 2 and the bead structure 11 are selected so that no seizure will occur and slip will be good. (Regarding Other Configurations) In the linear belt conveyor C of this embodiment, as shown in FIG.
A belt mounting plate 4 for mounting the belt is provided, and the belt mounting plate 4 is fixed to the square pipe 3. (About the function of this linear belt conveyor C). Bead structure arranged on one edge of the conveyor belt 1
Since the guide main body 20 of the guide 2 is only set in 11 as shown in FIG. 4, it does not require skill for adjustment as compared with the means A in the section of the conventional art. ． As shown in FIG. 4, the bead structure 11 arranged on one edge of the conveyor belt 1 is supported by the guide body 20 of the guide 2 so as not to move left and right,
Since both the guide main body 20 and the bead structure 11 of the guide 2 are hard, it is possible to provide sufficient rigidity to support the lateral offset force generated in the entire conveyor belt 1, resulting in a large belt offset force. A sufficient meandering prevention effect can be obtained. Moreover, the bead structure 11 is less likely to be damaged. ． As shown in FIG. 4, the bead structure 11 arranged on one edge of the conveyor belt 1 is supported by the guide body 20 of the guide 2 so as not to move to the left and right.

The conveyor belt 1 comprises a belt body 10
A large number of bead formations 11 which are narrow as described above along one edge of the
Are arranged in a row at regular intervals over the entire circumference of the outward path, the flexibility of the conveyor belt 1 is determined by the flexibility of the belt main body 10 between the adjacent bead forming bodies 11, 11. The pulley required for transferring small loads can be used.

Further, since the bead structure 11 arranged on one edge of the conveyor belt 1 is supported by the guide body 20 of the guide 2 so as not to move left and right,
Articles can be transferred from the side of the belt. [Other Embodiments] As shown in FIG. 5, the guide 2 is replaced with the guide 2 of the above-described first embodiment, and both the inclined portions of the thick portion 13 are provided with two round bars 20a, 20a (the guide main body 20). It may be sandwiched between.

In the first embodiment, the conveyor belt 1
The bead structure 11 is arranged along the entire circumference of the forward path along one edge of the belt body 10, but is not limited to this, and the bead structure is formed on the center line in the longitudinal direction of the belt body 10. The bodies 11 may be arranged all around the outward path. In this case, the bead structure 11 may be regulated so as not to move to the left and right with respect to the belt length direction by, for example, the guide 2 that hangs on the center line in the length direction of the belt body 10.

In the bead structure 11 of the first embodiment, as shown in FIGS. 7 and 8, the thick portion 13 (protruding portion) can be replaced with the recess portion 14. In this case, the guide 2 is provided with a guide main body 20 (a steel plate bent into an inverted trapezoidal shape or a round bar) which is fitted in the recess 14 and projects downward.

Even when the guide 2 and the bead structure 11 are changed to the above-mentioned forms, the same functions as those of the first embodiment can be obtained.

On the other hand, although the first embodiment is a so-called open drive linear belt conveyor C, it is a center drive consisting of a conveyor belt 1, pulleys P and P, auxiliary pulleys P1 and P1 and a drive D as shown in FIG. The present invention can also be applied to the linear belt conveyor C. In this case, the auxiliary pulley
A peripheral groove M through which the bead structure 11 is fitted is formed in P1 as shown in FIG. 10, or the auxiliary pulley P1 is short without a portion in contact with the bead structure 11. And it is sufficient.

Further, as the material of the bead structure 11,
Synthetic resins such as iron, sintered metal, nylon, polyacetal can be used. In the case of a synthetic resin, a substance that reduces sliding resistance such as graphite, molybdenum compound or lubricating oil, or a reinforcing substance such as glass fiber or carbon fiber may be added.

[0023]

The present invention having the above-mentioned structure has the following effects.

As is clear from the contents of the column of the embodiment of the invention, it can be installed without requiring skill and has a sufficient meandering prevention effect without damage even at a place where a large belt offset force is generated, and the structure is A linear belt conveyor that is relatively simple and can use a small-diameter pulley required for transferring small loads between conveyors and can transfer articles from the side of the belt can be provided.

[Brief description of drawings]

FIG. 1 is a plan view of a linear belt conveyor according to a first embodiment of the present invention.

FIG. 2 is a partial perspective view of a conveyor belt used in the linear belt conveyor.

FIG. 3 is a cross-sectional view of a belt body and a bead structure that form the conveyor belt.

FIG. 4 is a sectional perspective view of the linear belt conveyor.

FIG. 5 is a sectional view of a linear belt conveyor according to another embodiment.

FIG. 6 is a sectional view of a linear belt conveyor according to another embodiment.

FIG. 7 is a sectional view of a linear belt conveyor according to another embodiment.

FIG. 8 is a sectional view of a linear belt conveyor according to another embodiment.

FIG. 9 is a conceptual diagram of a center-driven linear belt conveyor.

FIG. 10 is a front view of an auxiliary pulley of a center-driven linear belt conveyor.

FIG. 11 is a sectional view of a conventional linear belt conveyor.

FIG. 12 is a sectional view of a conventional linear belt conveyor.

[Explanation of symbols]

P pulley 1 conveyor belt 10 Belt body 11 bead structure 2 guides

Claims (4)

[Claims] 1. A conveyor belt is stretched between pulleys, and the conveyor belt has a large number of narrow and rigid bead structures arranged in a line in the belt length direction of the belt main body over the entire circumference of the outward path. It is arranged and arranged,
The linear belt conveyor, wherein the bead structure is regulated by a guide arranged so as to extend in the belt length direction so as not to move left and right with respect to the belt length direction. 2. The linear belt conveyor according to claim 1, wherein the bead structure is arranged along one edge of the belt body or arranged along the center line in the belt length direction. . 3. The width of the bead structure is 4 times the diameter of the pulley.
The linear belt conveyor according to claim 1 or 2, wherein the linear belt conveyor is set to -50%. 4. The bead structure is made of metal or hard synthetic resin.
The linear belt conveyor according to any one of 1.