JP3148968U - Conveyor belt for high stop accuracy - Google Patents

Abstract

A conveyor belt that exhibits high stopping accuracy and that can fully draw out the performance of the device in combination with a drive motor and a speed reducer characterized by high-precision, high-function rotation control or a reduction gear. A timing belt 6 having a tooth whose extension strength is greater than that of a general conveying belt 2 and a conveying belt 2 are joined and integrated in a plane parallel via a joining member 7, and a driving pulley 3 and a driven pulley 8 are connected to the teeth of the timing belt 6. The driving and braking force due to the change in the friction state between the driving pulley 3 and the general conveying belt 2 and the stopping accuracy of the conveyed product are not affected. [Selection] Figure 1

Description

  The present invention relates to a conveyance belt for high stop accuracy that can perform stop accuracy of a conveyance belt used for cargo handling and conveyance with high accuracy.

As the conveyor belt, as shown in FIG. 3, a general conveyor belt 12, which is a flat belt, is stretched between two drive pulleys, and is driven by one of the drive pulleys 13 to convey the object 11 on the general conveyor belt 12. Some are transported and stopped at a predetermined stop position 14.
Further, as shown in FIG. 4, there is a type in which teeth 25 are provided on the entire circumference of the conveyor belt and the conveyor belt 22 is driven by a toothed drive pulley 23.

In the conventional example of FIG. 3, in order to drive and brake the general conveying belt 12 by the frictional force of the contact surface between the general conveying belt 12 and the driving pulley 13, the general conveying belt 12 which is a flat belt is stretched or dried. A subtle slip occurs between the general conveyor belt 12 and the drive pulley 13 in response to a change in other external conditions such as a difference in the load of the conveyed object 11. There is a drawback that the starting and stopping are repeated, so that they are accumulated, and the stop position of the general conveying belt 12 and the conveyed object 11 deviates from the predetermined position 14.

In addition, in the conventional example shown in FIGS. 4 and 5, in order to overcome the disadvantages of the conventional example of FIG. 3, the inner teeth 25 are provided over the entire circumference on the side contacting the driving pulley 23 of the conveyor belt 22. In addition, there is a drive pulley 23 and a driven pulley that are provided with external teeth that mesh with the drive pulley 23 and that drive the conveyor belt by meshing rather than frictional transmission between the drive pulley and the conveyor belt. In this example, the disadvantages of the conventional example shown in FIG. 3 can be overcome. However, when the conveyor belt 12 expands due to the characteristics of the belt, the distance between the inner teeth 25 attached to the entire circumference of the conveyor belt is affected, and the driving pulley In addition, there is a drawback in that the meshing with the teeth on the driven pulley side is different and the original meshing function is hindered.

The present invention avoids the disadvantages of the conventional example, eliminates variations in the stopping accuracy of the transported object, satisfies the stopping accuracy required by the specification, and has a large range including aspects such as actual use durability and maintenance. It provides a high-stop precision conveyor belt that can demonstrate the improvement effect.
For this purpose, it is manufactured by combining a general conveyor belt with a timing belt used to transmit the rotation of the crankshaft to the cam, especially in automobiles, etc., which have teeth with high tensile strength.
In other words, a timing belt is molded and integrated along both sides of a flat belt that does not have teeth.

According to the present invention, high accuracy can be expected with respect to stopping of the conveyor belt, that is, the accuracy of stopping the conveyed object. By combining the drive motor and the reducer with high accuracy and high function for rotation control, It becomes a belt for belt conveyors characterized by high stopping accuracy that can fully draw out the performance of drive equipment or can handle it, and it can be widely applied for general industrial use.
In addition, cost is reduced by using expensive timing belts only on both sides.

The present invention will be described according to the embodiment shown in FIGS.
The timing belt 6 having a greater extension strength and larger teeth than that of the general conveying belt is disposed on both sides in the running direction indicated by the arrow A of the general conveying belt 2 which is a flat belt having no teeth, and is parallel to the plane. It is integrated by welding molding via the member 7. A urethane resin or the like is appropriate as the bonding material.
With this configuration, the drive pulley 3 and the driven pulley 8 are engaged with the teeth of the timing belt 6 having a high extension strength on both sides, and the central friction pulley portion is a flat conveyor belt. 2 is driven. Since the tooth meshing drive portion is provided in this way, even if the friction state between the drive pulley 3 and the conveyor belt 2 fluctuates, the driving and braking force and the stopping accuracy of the conveyed object are not affected. .

Fig. 2 shows a cross section of the upper belt part of Fig. 1.
Timing belts 6 arranged in parallel to each other on both sides of the central flat belt 2 are welded and joined with urethane resin 7.
In FIG. 2, the timing belt 6 is arranged on both sides of the conveying belt 2, but the number of the timing belts 6 and the arrangement position thereof are not limited to this. For example, you may make it provide in the center of a conveyance belt.

The perspective view which shows an Example Cross-sectional view showing an example Side view showing a conventional example Side view showing another conventional example Sectional view of another conventional example

Explanation of symbols

3,13,23 Drive pulley 5,25 Teeth 6 Timing belt 7 Joining member
8 Driven pulleys 11, 21 Conveyed objects 12, 22 Conveyor belt (flat belt part)
14,24 Stop position

Claims (2)

A conveying belt for high stopping accuracy, characterized in that a timing belt having teeth having a high extension strength is arranged in parallel on both sides of a flat belt having no teeth. The conveying belt for high stop accuracy according to claim 1, wherein the flat belt and the timing belt are integrally formed by welding molding.