JP2000136014A - Curve conveyer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a curve conveyer operating with reduced noise without refueling and having high transmission efficiency of driving power. SOLUTION: This curve conveyer comprises a carrying belt 2 stretched between a free roller, a knife edge and a taper roller disposed at specified angle intervals. A rotating roller 30 driven to rotate by a motor is disposed between a forward path and a backward path of the carrying belt 2, and a pressing rollers 32 are disposed on right and left upper parts of the forward path, and right and left lower parts of the backward path with a line passing through a rotating center of the rotating roller 30 and orthogonally crossing a carrying belt surface as a reference line. The forward path part and the backward path part of the carrying belt 2 are pressed against the rotating roller 30 by the pressing rollers 32 to wind the carrying belt 2 around the rotating roller 30 at a specified angle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a curve conveyor.

[0002]

2. Description of the Related Art Curve conveyors of the type shown in FIG. 10 are known. These conveyors are, as shown in FIGS. 10 and 11, knife edges 90, 90 arranged at predetermined angular intervals.
And a free roller 91, 91 (having a plurality of unit rollers on a shaft) provided below the transfer belt 92, and the transfer belt 92 is provided outside the transfer belt 92. The chain 93 is driven to rotate. The chain 93 includes a guide 94 as shown in FIG.
The transmission of power from the chain 93 to the conveyor belt 92 is restricted by the conveyor belt 92 as shown in FIGS. 12 and 13.
It comprises a belt hanging member P1 on the 92 side, a belt hanging member P2 on the chain 93 on the same plane as the belt hanging member P1, and a power transmission belt B provided between the belt hanging members. This is performed by the transmission means 95. The driving of the chain 93 is performed by a motor M via sprockets 96, 97, 98 and a chain 99 as shown in FIG.

However, in this curve conveyor,
Since the sprockets 96, 97, 98 and the chain 99 need to be refueled, they cannot be used in places such as food factories. On the other hand, they cannot be used in places where noise is disliked due to the loud noise during operation. In addition, since the chain 93 moves while rubbing with the guide 94 while being pulled inward, the transmission efficiency of the driving force is low.

[0004]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a curve conveyor which can perform low-noise operation without lubrication and has high driving force transmission efficiency.

[0005]

Means for Solving the Problems (Invention of Claim 1)
A curved conveyor according to the present invention is a curved conveyor in which a transport belt is stretched between free rollers, knife edges or tapered rollers arranged at a predetermined angular interval, and a motor is provided between a forward path and a return path of the transport belt. A rotation roller driven to rotate by the rotation roller, and pressing rollers disposed on the right and left above the forward path and below the return path with reference to a line passing through the rotation center of the rotation roller and orthogonal to the surface of the conveyor belt, and The transport belt is wound around the rotary roller by a predetermined angle in such a manner that the forward and backward portions of the transport belt are pressed against the rotary roller. (Invention of claim 2) The curve conveyor of the present invention
According to the first aspect of the present invention, the angle at which the transport belt is wound around the rotation roller on the outward path and the return path is set to 30 degrees.
° to 90 °. (Invention of claim 3) The curve conveyor of the present invention
According to the first or second aspect of the present invention, the arrangement position of the rotating roller in plan view is set to [2
0 °] to [intermediate angle between the start and end of the conveyor]
Is set in the range. (Invention of Claim 4) The curve conveyor of the present invention
Regarding the invention according to any one of claims 1 to 3,
Each pressing roller is constituted by a plurality of bearings.

The functions of the curve conveyor of the present invention will be described in the following embodiments of the present invention.

[0007]

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

FIG. 1 and FIG.
It shows a curve conveyor that changes its direction by 80 °.

As shown in FIGS. 1 to 3, the curve conveyor has free rollers 1, 1 arranged at 180 ° intervals.
A driving mechanism 3 for rotating and driving the conveyor belt 2 and a holding mechanism 4 for holding the conveyor belt 2 so as to prevent the conveyor belt 2 from moving inward.
A cover 5 surrounding the drive mechanism 3, the holding mechanism 4, and the outer periphery of the transport belt 2;
And a pedestal portion 7.

As shown in FIGS. 1, 2 and 6, the free rollers 1, 1 'are arranged in series in such a manner that a plurality of unit rollers 10 are extrapolated on a shaft 11, and the unit rollers Each 10 can freely rotate with respect to the shaft 11.

As shown in FIG. 7, the conveyor belt 2 includes a belt main body 20 formed of a seamless annular flat plate-like member, and a bead 21 fixedly formed on an outer peripheral portion of the belt main body 20. It is composed of The conveyor belt 2 forms a belt main body 20 by cutting a plate-shaped belt forming member into a circular shape and cutting a circular hole at the same central portion of the cut circular portion. The belt 21 is manufactured by fusing or adhering a bead 21 to an outer peripheral portion of the belt main body 20. On the other hand, the transport belt 2 is annular in the unfolded state as described above, but the transport belt 2 corresponds to the length L applied between the free rollers 1 and 1 'shown in FIG.
As shown in the figure, the length in a plan view is shortened by the symbol L ′.

As shown in FIG. 3, the drive mechanism 3 includes a rotary roller 30 attached to a shaft 31 supported by sprockets SK, SK, and retainers attached to the shafts of the blocks 33, 33, respectively. A roller 32 (comprised of three bearings), a bracket 35 attached to the belt mounting plate 60 and supporting one sprocket SK, and a bracket 35 attached to the seat plate 70 and the other sprocket SK And a plate-like bracket 34 supporting the blocks 33, 33, a pulley 36 provided at an end of the shaft portion 31, a motor 39 serving as a drive source, and a pulley 37 provided on a shaft of the motor 39.
And a belt 38 stretched between the pulleys 36 and 37. As shown in FIG.
The conveying belt 2 is wound around the rotating roller 30 at a predetermined angle in such a manner that the pressing roller 32 is pressed from four positions. The winding angle of the transport belt 2 around the rotation roller 30 may be in the range of 30 ° to 90 ° as shown in FIG. Further, the arrangement position of the rotating roller is shown in FIG.
As shown in FIG.
The angle may be in the range of ° to 90 °.

As shown in FIG. 4, the holding mechanism portion 4 holds the above-mentioned bead 21 to prevent it from moving inward of the conveyor belt 2. And upper and lower rotating bodies 43 and 44 rotatably mounted on the upper and lower surfaces. In this embodiment, the upper and lower rotating bodies 43 and 44 are constituted by bearings, the inner race of the bearing is supported and fixed, and the outer race is a rotating part.

The cover 5 is made of a steel plate.
It has a U-shaped cross section and a semi-circular shape in plan view. In addition, the blocks 40, 40 are shown in FIG.
As shown in the figure, the mounting plate 60 and the seat plate 70 are fixed.

As shown in FIGS. 3 and 4, the belt mounting portion 6 is composed of a member 61 erected on the inner diameter side of the seat plate 70 and a fan-shaped mounting plate 60 fixed to the member 61. The forward side of the conveyor belt 2 slides on the mounting plate 60.

As shown in FIG. 2, the pedestal portion 7
And a plurality of legs 71, and a connecting member 72 for connecting the legs 71, 71 to each other, and a lower end portion of the legs 71 is provided with a height adjusting portion 73.

Since this curve conveyor has the above configuration, it has the following functions.
Since the belt main body 20 of the conveyor belt 2 is formed of a seamless annular flat plate-shaped member, the belt main body 20 surely follows the outer peripheral shape of the free roller 1, and as a result,
The posture of the transferred object does not change at the end of the conveyor, and the object does not fall down at the end of the conveyor even if the object is vertically long. Since the transport belt 2 is manufactured as described above, the cost is low. The rotation force from the motor 39 is, as shown in FIG.
The belt is transmitted to the conveyor belt 2 in such a manner that the conveyor belt 2 is wound around the rotating roller 30 at a fixed angle in a mode in which the pressing roller 32 is pressed from four places. High power transmission efficiency.

The above-mentioned drive mechanism section 3 can be employed in a curved conveyor having a knife edge 1 '' as shown in FIG. 8, and further a transport belt is stretched between a pair of tapered rollers. It can also be used for curve conveyors.

Further, the curve conveyor according to the above-described embodiment has one
Although it is 80 °, it is not limited to this.
In this case, the arrangement position of the rotating roller may be set in the range of [20 ° before the end of the conveyor] to [intermediate angle between the start and end of the conveyor] in plan view.

Further, as the transport belt 2, the one described in the section of the prior art can be used.

[0021]

Since the present invention has the above-described configuration, it has the following effects.

From the contents described in the embodiments of the present invention, it is possible to provide a curve conveyor capable of performing low-noise operation without lubrication and having high transmission efficiency of driving force.

[Brief description of the drawings]

FIG. 1 is a plan view of a curve conveyor provided with a transport belt according to an embodiment of the present invention.

FIG. 2 is a front view of a curve conveyor provided with a transport belt according to the embodiment of the present invention.

FIG. 3 is a sectional view taken along line AA of FIG. 1;

FIG. 4 is a sectional view taken along line BB of FIG. 1;

FIG. 5 is a sectional view taken along line CC of FIG. 3;

FIG. 6 is an explanatory view of a tip portion of the curve conveyor.

FIG. 7 is a plan view of the transport belt.

FIG. 8 is an explanatory view of a curve conveyor according to another embodiment.

FIG. 9 is a plan view showing a disposable position of a drive mechanism.

FIG. 10 is a plan view of a conventional curve conveyor.

FIG. 11 is a cross-sectional view illustrating a relationship between a conveyor belt, a knife edge, and a free roller in a conventional curve conveyor.

FIG. 12 is a plan view showing a structure for transmitting a rotational driving force to a transport belt in a conventional curve conveyor.

FIG. 13 is a side view showing a structure for transmitting a rotational driving force to a conveyor belt in a conventional curve conveyor.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 Free roller 1 ′ Free roller 1 ″ Knife edge 2 Conveyor belt 3 Drive mechanism unit 30 Rotary roller 32 Press roller 4 Holding mechanism unit 5 Cover 6 Belt mounting unit 7 Base

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Mamoru Maenaka Inventor 172 Ikezawa-cho, Yamatokoriyama-shi, Nara Pref.

Claims (4)

[Claims] 1. A curved conveyor having a conveyor belt stretched between free rollers, knife edges or tapered rollers arranged at a predetermined angular interval, wherein the conveyor is rotated by a motor between a forward path and a return path of the conveyor belt. A rotating roller to be driven is arranged, and pressing rollers are arranged on the left and right above the forward path and below the returning path with reference to a line passing through the rotation center of the rotating roller and orthogonal to the conveying belt surface, and conveyed by the pressing roller. A curve conveyor, wherein a conveyor belt is wound around a rotation roller at a predetermined angle in such a manner that a forward path portion and a return path portion of the belt are pressed against the rotation roller. 2. The curve conveyor according to claim 1, wherein the winding angle of the transport belt around the rotation roller on the outward path and the return path is set to 30 ° to 90 °. 3. The arrangement position of the rotating roller in a plan view is set in a range of [20 ° before the end of the conveyor] to [intermediate angle between the start and end of the conveyor]. The curve conveyor according to claim 1 or 2, wherein 4. The curve conveyor according to claim 1, wherein each press roller is constituted by a plurality of bearings.