JPH0625216U - belt conveyor - Google Patents

Abstract

(57) [Abstract] [Purpose] By using a metal endless belt, noise is reduced, conveyance speed is improved, and it is possible to prevent dirt on the connection part from becoming unsanitary. Prevents deviation of the endless belt due to circumferential accuracy and parallelism of pulleys. [Constitution] Metal endless belt 21 and resin cover 2
2 is attached, and the first magnet 23 is attached to the resin cover 22.
To bury. On the other hand, the second magnet 24 is attached to the frame 13 that abuts against and supports the lower surface of the endless belt 21, and the attraction of the magnets 23, 24 prevents the belt from shifting. In addition, a mechanism for adjusting the angle of the support shaft of the pulley is provided to adjust the parallelism of the pulley prior to the driving operation.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a belt conveyor using a metal endless belt.

[0002]

[Prior art]

 Conventionally, belts for belt conveyors that carry bottles and the like are made of resin, which is subject to severe wear. Therefore, a structure in which a large number of metal plates are connected, that is, a plate chain has been used.

[0003]

[Problems to be solved by the device]

 However, since the plate chain is connected to the metal plate, there is a problem that the noise during operation is severe and the line speed cannot be increased due to the noise. In addition, since it is necessary to use a lubricant at the connecting portion of the metal plate, stains tend to accumulate, which is unsanitary especially when handling foods.

[0004]

[Problems to be solved by the device]

 As a method of solving these problems, it is conceivable to use a metal endless belt as the belt for the belt conveyor. However, when the length of the metallic endless belt is about 5 to 10 m, it is difficult to manufacture the endless belt itself into an accurate cylindrical shape, that is, a cylindrical shape in which both sides have the same circumference. In addition, a metal endless belt is stretched over a pair of parallelly arranged pulleys to form a belt conveyor, but it is also difficult to obtain a precise parallelism between the pair of pulleys. Therefore, even if there is a slight deviation in the circumference of the metal endless belt and a slight deviation in the parallelism of the pulley, the endless belt will gradually shift in the axial direction of the pulley when it is operated as a belt conveyor. Eventually it will come off.

As a countermeasure against this, guides for preventing the endless belt from coming off are provided on both sides of the belt conveyor, the endless belt is stretched over a pair of pulleys, and then the endless belt is displaced while rotating the pulley and the belt. It was necessary to adjust the angle of the spindle of the pulley so that it would not occur. However, even in such a case, there is a problem that the endless belt comes into contact with the guide during the work for setting the angle of the support shaft, and both end portions of the endless belt are worn and the endless belt is broken early. It was

Therefore, an object of the present invention is to use a metal endless belt to eliminate the connecting part, reduce noise, prevent the connecting part from becoming dirty and becoming unsanitary, and (EN) It is possible to provide a belt conveyor which can prevent the endless belt from coming off due to the deviation of the circumference of the endless belt and the deviation of the parallelism of the pulleys, or the endless belt from coming into contact with a guide and being worn and damaged. .

[0007]

[Means for Solving the Problems]

 In order to achieve the above object, the belt conveyor of the present invention has a pair of pulleys supported in parallel, a metal endless belt stretched over these pulleys, and a lower surface of an upper running portion of the endless belt. A frame for contacting and supporting the endless belt, and a resin cover for covering the inner circumference and both end portions of the endless belt is mounted. The resin cover has a first magnet built therein. A second magnet having an attractive force is attached.

Further, in a preferred aspect of the present invention, the angle of the spindle of the pulley is adjustable.

[0009]

[Action]

 Since the belt conveyor of the present invention uses the metal endless belt, it does not have many connecting parts like the conventional plate chain, noise is reduced during the operation of the belt conveyor, and the line speed of the belt conveyor is reduced. It is possible to raise. In addition, since it is not necessary to use a lubricant for the connection portion, dirt does not accumulate and it becomes unsanitary.

Further, in the belt conveyor of the present invention, the lower surface of the upper running portion of the endless belt is supported by abutting against the frame, and at this abutting portion, the first magnet mounted on the endless belt and the frame are mounted on the frame. Since the second magnet is attracted to the second magnet, it is possible to correct the belt deviation in the axial direction of the pulley due to the deviation of the circumference of the endless belt and the deviation of the parallelism of the support shaft, and prevent the belt from coming off. You can

In a preferred embodiment of the present invention, when the angle of the support shaft of the pulley is adjustable, the endless belt is stretched over the pulley and then the support shaft of the pulley is rotated while rotating the pulley and the belt. The angle of can be adjusted to minimize the deviation of the endless belt. Therefore, it is possible to reliably prevent the endless belt from coming off together with the attraction force of the magnet.

Further, for example, even when the endless belt comes into contact with the guides on both sides when adjusting the angle of the support shaft of the pulley, both end portions of the endless belt are covered with the resin covers, so that the metal endless belt is covered. It is possible to prevent wear and damage of itself and improve durability.

[0013]

【Example】

 2 and 3, the pulley 11 is arranged so that the angle of its support shaft 12 can be adjusted. That is, the slide way 14 is installed on the frame 13, and the bearing 16 having the bent portion 15 is mounted so as to be slidable on the slide way 14. The bearing 16 has a spherical bearing 17, and the support shaft 12 is inserted and supported in the center hole of the spherical bearing 17.

On the other hand, an end portion of an adjusting screw 19 is pivotally attached to the bent portion 15 of the bearing 16. The adjusting screw 19 is screwed into a screw receiver 18 installed on the frame 13, and when the adjusting screw 19 is turned as shown by an arrow a, the bearing 16 slides on the slide way 14 as shown by an arrow b. Then, the angle of the support shaft 12 is adjusted via the spherical bearing 17. This adjustment is made at both ends of the support shaft 12.

A pair of pulleys 11 is arranged at both ends of the belt conveyor, and a metal endless belt 21 having a length of 5 to 10 m is stretched over the pair of pulleys 11. Referring to FIG. 1 together, the lower surface of the endless belt 21 is supported by being abutted against the frame 13. It should be noted that guides 13a and 13b for preventing the endless belt 21 from coming off are provided on both sides of the frame 13.

The inner peripheral surface and both end surfaces of the metal endless belt 21 are covered with a resin cover 22. As the material of the resin cover 22, for example, soft vinyl chloride, urethane, polyethylene, Teflon or the like is preferably used, and other rubber or the like may be used. Further, a large number of elongated plate-shaped first magnets 23 are embedded in the resin cover 22 with their longitudinal directions oriented in a direction orthogonal to the belt direction and at predetermined intervals in the belt direction.

In opposition to this, a large number of second plate-shaped second magnets 24, which are also elongated, are installed on the belt contact surface of the frame 13 at predetermined intervals. The N pole of the first magnet 23 and the S pole of the second magnet 24 approach each other, and the S pole of the first magnet 23 and the N pole of the second magnet 24 approach each other. As a result, the endless belt 21 is magnetically attracted to the upper surface of the frame 13 to run.

In this embodiment, the magnets 23 and 24 are in the form of elongated plates, but the magnets 23 and 24 may have, for example, button shapes, and the endless belt 21 is essential. Anything that can run while being attracted to the frame 13 may be used.

Next, a method of handling this belt conveyor will be described. When the pulley 11 is rotated depending on the circumferential accuracy of the endless belt 21, the parallelism of the pair of pulleys 11, and the like, the endless belt 21 may be gradually displaced in the axial direction of the pulley 11 and come off. Therefore, the angle of the support shafts 12 of the pair of pulleys 11 is adjusted prior to the start of operation so that the endless belt 21 can rotate without coming off. This operation can be carried out by rotating the endless belt 21 and rotating the screw 19 to slide the bearing 16 to change the angle of the support shaft 12 supported by the bearing 16. That is, the angle of the support shaft 12 of the pulley 11 may be adjusted so that the endless belt 21 is not displaced.

On the other hand, it is difficult to prevent the endless belt 21 from contacting the guides 13a and 13b on both sides of the frame 13 during the adjustment work. That is, the endless belt 21 may come into contact with the guides 13a and 13b while the screw 19 is being rotated and adjusted. In this case, in the belt conveyor of the present invention, both end portions of the endless belt 21 are covered with the resin covers 22, so that the metal endless belt 21 itself can be prevented from being damaged.

Further, as described above, even if the angle of the support shaft 12 is adjusted so that the endless belt 21 is not displaced, it is difficult to completely eliminate the displacement of the endless belt 21. is there. However, in the present invention, the first magnet 23 embedded in the resin cover 22 on the inner peripheral surface of the endless belt 21 and the second magnet 24 mounted on the upper surface of the frame 13 are attracted to each other. A slight deviation of 21 is corrected by the suction force, and the belt conveyor can be continuously operated for a long period of time.

Even if the mechanism for adjusting the angle of the support shaft 12 of the pulley 11 is not provided, if the circumferential accuracy of the endless belt 21 and the parallelism of the pulley 11 are made to some extent, the magnets 23, 24 will be It is also possible to correct the deviation of the endless belt 21 only by the magnetic attraction force. Further, the pulley 11 may have a perfect cylindrical shape, but preferably, it has a drum shape. With such a shape, the endless belt 21 can be more effectively prevented from shifting.

[0023]

[Effect of device]

 As described above, according to the belt conveyor of the present invention, the magnetic attraction force acts on the contact surface between the endless belt and the frame, so that the belt deviation caused by the circumferential accuracy of the endless belt and the parallelism of the pulleys. Can be corrected, and continuous operation over a long period of time becomes possible. Further, since the inner peripheral surface and both end surfaces of the metal endless belt are covered with the resin cover, even if the endless belt comes into contact with the guides on both sides of the frame, the metal endless belt itself can be prevented from being damaged. Furthermore, by providing a mechanism for adjusting the angle of the support shaft of the pulley, it is possible to adjust the angle of the support shaft so that the displacement of the endless belt is minimized before starting the operation. Further, since the belt conveyor of the present invention employs the endless belt, noise is reduced during the operation of the belt conveyor, and further, the line speed of the belt conveyor can be increased and the work efficiency can be improved. Furthermore, unlike the conventional belt conveyors consisting of plate chains, the connection parts do not become dirty and become unsanitary, so it can be applied to the transportation of food and other items that require hygienic work. Wear.

[Brief description of drawings]

FIG. 1 is a cutaway perspective view showing a main part of an embodiment of a belt conveyor according to the present invention.

FIG. 2 is a partial plan sectional view of the belt conveyor.

FIG. 3 is a partial side view of the belt conveyor.

[Explanation of symbols]

 11 pulley 12 spindle 13 frame 14 slideway 15 bent portion 16 bearing 17 spherical bearing 18 screw receiver 19 adjustment screw 21 metal endless belt 22 resin cover 23 first magnet 24 second magnet

Claims (2)

[Scope of utility model registration request] 1. A pair of pulleys supported in parallel, a metal endless belt stretched over these pulleys, and a frame that abuts against a lower surface of an upper running portion of the endless belt to support it. A resin cover is mounted to cover the inner circumference and both end portions of the endless belt, a first magnet is built in the resin cover, and a second magnet having an attracting force to the first magnet is mounted to the frame. The belt conveyor is characterized by 2. The belt conveyor according to claim 1, wherein an angle of a support shaft of the pulley is adjustable.