JP2010269871A - Tire two-tier eliminating device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a tire two-tier eliminating device capable of eliminating any two-tier of tires and low in apparatus cost. <P>SOLUTION: In the tire two-tier eliminating device, an upstream side belt conveyor and a downstream side belt conveyor for conveying tires are arranged close to each other, and a driving roller to be rotated in the direction opposite to the conveying direction of the upstream and downstream side belt conveyors is arranged above the downstream side belt conveyor. An inequality d>D is satisfied, where (D) denotes the outside diameter of a tire and (d) denotes the distance from a boundary between the upstream and downstream side belt conveyors to the driving roller. Inequalities 4≤B/A≤8 are satisfied, where (B) denotes the speed of the downstream side belt conveyor and (A) denotes the speed of the upstream side belt conveyor. Inequalities 1.1≤a/t≤1.5 are satisfied, where (a) denotes the height of a lower end of the driving roller from an upper surface of the downstream side belt conveyor and (t) denotes the width of the tire. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a two-stage overlap elimination device for a tire that enables the tires to be efficiently conveyed one by one when the tires are conveyed using a belt conveyor.

  Generally, manufactured tires are stored in a warehouse in a state where, for example, 8 to 10 tires are stacked, and are transported and shipped by a belt conveyor. At this time, it is necessary to take out the tires one by one from the stacked tires and put them on a conveyor, and an apparatus for that purpose has been devised (for example, Patent Document 1). However, since the tires taken out may overlap on the conveyor when they are put into the conveyor, the shipping work may be hindered, and various means for eliminating the overlapping of the tires with a simple configuration have been considered.

  Three examples conventionally considered will be described with reference to FIG. In the first example, a free roller 62 is provided above the belt conveyor 61 as shown in FIG. The upper tire T1 is pressed and held by the free roller 62, and the upper tire T2 is slid on the lower tire T2 to eliminate the two-stage overlap. However, the free roller 62 rotates in the same direction as the conveying direction of the belt conveyor 61, and the upper tires enter under the free roller 62, and between the free roller 62 and the belt conveyor 61 as shown in (a-2). There is a risk of tire clogging.

  In the next example, as shown in FIG. 6 (b), a rubber sheet 64 that is swingable in the direction of conveyance of the belt conveyor 61 and in the opposite direction around the fulcrum 63 is suspended from the fulcrum 63. The upper tire T1 is held down by the swinging of the rubber sheet 64, and the two-stage overlap is eliminated by sliding down the rear side of the lower tire T2 conveyed. However, the rubber sheet 64 has a problem that the horizontal force (horizontal force) is not sufficient, and the upper tire T1 cannot be slid down from the lower tire T2.

  In the third example, as shown in FIG. 6C, a roller 65 that is rotationally driven in a direction opposite to the transport direction is provided. By rotating the roller 65, the upper tire T1 is dropped behind the lower tire T2 so as to eliminate the two-stage overlap. However, as shown in the figure, when the upper tire T1 precedes and is in front of the following lower tire T2, the upper tire T1 cannot be lifted onto the lower tire T2, There is a problem that the tires are caught between the roller 65 and the belt conveyor 61 in a state where the tires are stacked in two stages.

JP 11-292289 A

  In view of solving the above-described problems, an object of the present invention is to provide a two-stage overlapping elimination device for a tire that can eliminate the two-stage overlapping of tires and has a low equipment cost.

The tire two-stage overlap elimination device according to the present invention is
An upstream belt conveyor and a downstream belt conveyor for conveying tires are arranged close to each other,
A driving roller that rotates in a direction opposite to the conveying direction of the upstream and downstream belt conveyors is disposed above the downstream belt conveyor,
The outer diameter (D) of the tire and the distance (d) from the boundary between the upstream and downstream belt conveyors to the driving roller are in a relationship of d> D,
The speed (B) of the downstream belt conveyor and the speed (A) of the upstream belt conveyor have a relationship of 4 ≦ B / A ≦ 8,
The height (a) of the lower end of the driving roller from the upper surface of the downstream belt conveyor and the width (t) of the tire are in a relationship of 1.1 ≦ a / t ≦ 1.5. .

In addition, the two-stage overlap elimination device for the tire described above is
The diameter (b) of the driving roller and the width (t) of the tire are in a relationship of 0.4 ≦ b / t ≦ 1,
The surface speed (c) during rotation of the drive roller is 10 m / min ≦ c ≦ 50 m / min.

  According to the present invention, it is possible to provide a tire two-stage overlap elimination device that can eliminate the two-stage overlap of tires and has low equipment costs.

1 is a perspective view showing an outline of a two-stage overlap elimination device for a tire according to an embodiment of the present invention. It is a figure which shows operation | movement of the two-stage overlap elimination apparatus of the tire of embodiment of this invention. It is a figure which shows operation | movement of the two-stage overlap elimination apparatus of the tire of embodiment of this invention. It is a figure which shows operation | movement of the two-stage overlap elimination apparatus of the tire of embodiment of this invention. It is a figure which shows operation | movement of the two-stage overlap elimination apparatus of the tire of embodiment of this invention. It is a figure which shows the operation | movement of the prior art example which eliminates the two-step overlap of a tire.

  Hereinafter, the present invention will be described based on embodiments. Note that the present invention is not limited to the following embodiments. Various modifications can be made to the following embodiments within the same and equivalent scope as the present invention.

1. Outline of Tire Two-stage Overlap Elimination Device First, an outline of a tire two-stage overlap elimination device of the present invention will be described. FIG. 1 is a perspective view showing an outline of a two-stage overlap elimination apparatus for tires according to an embodiment of the present invention. The two-stage overlap elimination apparatus for tires of the present invention includes an upstream belt conveyor 1 and an upstream belt conveyor 1. 2, a downstream belt conveyor 2 disposed in the vicinity, a driving roller 3 disposed above the downstream belt conveyor 2, and a control unit (not shown) for controlling these in a comprehensive manner.

  The conveying directions of the upstream belt conveyor 1 and the downstream belt conveyor 2 are the same, and the tire T is conveyed in the direction of the arrow at the speeds A and B, respectively. The driving roller 3 rotates in the direction opposite to the conveying direction of the upstream belt conveyor 1 and the downstream belt conveyor 2. The outer diameter (D) of the tire and the distance (d) from the boundary between the upstream belt conveyor 1 and the downstream belt conveyor 2 to the driving roller 3 are set so as to satisfy the relationship d> D. A and B are set so that the ratio B / A of the speed (B) of the downstream belt conveyor 2 and the speed (A) of the upstream belt conveyor 1 satisfies the relationship of 4 ≦ B / A ≦ 8. Yes. Further, the ratio a / t between the height (a) of the lower end of the driving roller 3 from the upper surface of the downstream belt conveyor 2 and the width (t) of the tire T (see FIG. 2) is 1.1 ≦ a / t ≦. A is set so as to satisfy the relationship of 1.5.

2. Next, the mechanism for eliminating the double overlap of tires in each case will be described in order for Case 1 and Case 2 in which the belt conveyor may become clogged during conveyance.

(1) Case 1
Case 1 is a case where the upper tire T1 is hung in front of the lower tire T2 as shown in FIG. Hereinafter, a description will be given with reference to FIG.

FIG. 2 is a diagram showing the operation of the two-stage overlap elimination device for tires in case 1.
As shown in FIG. 2 (a), the tip of the upper tire T1 reaches the boundary between the upstream belt conveyor 1 and the downstream belt conveyor 2, is further conveyed downstream, and is placed on the belt conveyor 2 on the downstream side. Since the speed (B) of the downstream belt conveyor is set faster than the speed (A) of the upstream belt conveyor as described above, the upper tire T1 is faster than the lower tire T2. It is conveyed by. As shown in FIG. 2B, the rear end of the upper tire T1 is disengaged from the front end of the lower tire T2 before the front end of the lower tire T2 reaches the boundary between the two belt conveyors. For this reason, the upper tire T1 can be reliably pulled down from the lower tire 2. Further, since the distance d is larger than the outer diameter D of the tire T, the upper tire T1 can be dragged down before the tip reaches the lower side of the driving roller 3, and the tire is placed under the roller 3. There is no fear of biting.

  Thus, even when the upper tire T1 is hooked in front of the lower tire T2, the two-stage overlap of the tires can be eliminated without causing tire clogging. Since 1.1 ≦ a / t is set and a is slightly larger than t, the tires T1 and T2 in which the two-stage overlap is eliminated can pass without contacting the driving roller 3.

  An example of a small tire having an outer diameter D of 400 to 800 mm and a tire width t of 150 to 250 mm is given as an example. For example, the speed A of the upstream belt conveyor is 10 m / min, and the downstream side The belt conveyor speed B is set to 40 m / min, the distance d from the boundary between the upstream and downstream belt conveyors to the driving roller is more than 800 mm, and the height from the upper surface of the downstream belt conveyor to the lower end of the driving roller. a is set to more than 250 mm.

(2) Case 2
Case 2 is a case where the upper tire T1 completely rides on and overlaps the lower tire T2 as shown in FIG. Hereinafter, description will be made with reference to FIGS. 3, 4, and 5.

  3, 4, and 5 are diagrams illustrating the operation of the two-stage overlapping tire elimination device in case 2, FIG. 3 (a) is before the elimination of the two-stage tire overlap, and FIG. 3 (b) The state after elimination of two-stage overlap of tires is shown. FIG. 4 shows a state in which the two-stage overlap of the tire is being eliminated. FIG. 4A shows a state where the ratio b / t between the diameter b of the driving roller 3 and the width t of the tire is 1 or less. b) shows the case where b / t is larger than 1.

  As shown in FIG. 3, the driving roller 3 rotates in the direction opposite to the conveying direction of the upstream belt 1 and the downstream belt 2. The ratio a / t between the height a of the lower end of the driving roller 3 from the upper surface of the downstream belt conveyor 2 and the tire width t is set so that a satisfies 1.1 ≦ a / t ≦ 1.5. ing. For this reason, when the tires are transported in two stages, the drive rotates in the direction opposite to the transport direction of the upstream belt 1 and the downstream belt 2 regardless of the magnitude of b / t. As shown in FIGS. 4 (a) and 4 (b), the roller 3 contacts the surface of the upper tire T1, and an upward force is applied to the tip side (left side in the figure) of the upper tire T1. The tire T1 can be prevented from sinking under the driving roller 3, the upper tire T1 is held down by the driving roller 3, only the lower tire T2 is conveyed, and the upper tire T1 is moved to the lower tire T2. The two-stage overlap of tires can be eliminated by dropping backwards.

  In addition, an upward force is applied to the front end side of the upper tire T1, thereby reducing the vertical drag between the two tires and reducing the frictional force between the two tires (friction coefficient × vertical drag). The lower tire T2 can be smoothly conveyed to the downstream side while the upper tire T1 is being held down. That is, as shown in FIG. 5, an upward force is applied to the tip side of the upper tire T1, thereby reducing the frictional force between the two tires (short left-pointing and right-pointing arrows) between the two tires. And a horizontal force applied to the tire T2 by the conveying force of the belt conveyor 2 on the downstream side (long left arrow) and a horizontal force applied to the tire T1 by being held down by the driving roller 3 (long right arrow) Thus, the lower tire T2 can be smoothly conveyed to the downstream side while the upper tire T1 is held down.

  The diameter b of the driving roller 3 preferably satisfies 0.4 ≦ b / t ≦ 1. By setting the diameter b of the drive roller 3 in this way, the upper tire T1 and the drive roller 3 are in contact with each other on a horizontal plane passing through the center of the circle of the drive roller 3 as shown in FIG. As a result, since the upper tire T1 is efficiently scooped from below by the rotation of the driving roller 3, the vertical drag can be more effectively reduced, and the two-stage overlap of the tires can be eliminated more smoothly. On the other hand, for example, when b / t is larger than 1 as shown in FIG. 4B, the effect of scooping up the upper tire T1 by the driving roller 3 is not sufficiently exhibited. Taking the case of the small tire as an example, the diameter b of the drive roller 3 is set to 100 mm, for example.

  Next, the surface speed c during rotation of the drive roller 3 shown in FIGS. 3 and 4 is preferably set to 10 m / min ≦ c ≦ 50 m / min. By setting the surface speed c of the driving roller 3 in this way, a sufficiently large frictional force can be obtained between the rotating driving roller 3 and the surface of the upper tire T1. As a result, the upper tire T can be picked up more effectively, the vertical drag can be further reduced, and the two-stage overlap of tires can be eliminated more smoothly.

1 Upstream Belt Conveyor 2 Downstream Belt Conveyor 3 Driving Roller 61 Belt Conveyor 62 Free Roller 63 Supporting Point 64 Rubber Sheet 65 Roller A Conveying Speed of Upstream Belt Conveyor a Height B of Lower End of Driving Roller from Upper Surface of Belt Conveyor Conveying speed of downstream belt conveyor b Diameter of driving roller c Surface speed of driving roller D Tire outer diameter d Distance between belt conveyor and driving roller T Tire T1 Upper tire T2 Lower tire t Tire width

Claims (2)

An upstream belt conveyor and a downstream belt conveyor for conveying tires are arranged close to each other,
A driving roller that rotates in a direction opposite to the conveying direction of the upstream and downstream belt conveyors is disposed above the downstream belt conveyor,
The outer diameter (D) of the tire and the distance (d) from the boundary between the upstream and downstream belt conveyors to the drive roller are in a relationship of d> D,
The speed (B) of the downstream belt conveyor and the speed (A) of the upstream belt conveyor have a relationship of 4 ≦ B / A ≦ 8,
The height (a) of the lower end of the drive roller from the upper surface of the downstream belt conveyor and the width (t) of the tire are in a relationship of 1.1 ≦ a / t ≦ 1.5. A device for eliminating double-tiered tires. The diameter (b) of the driving roller and the width (t) of the tire are in a relationship of 0.4 ≦ b / t ≦ 1,
2. The tire two-stage overlap elimination device according to claim 1, wherein a surface speed (c) of the driving roller during rotation is 10 m / min ≦ c ≦ 50 m / min.

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