JPS58216811A - Conveyor - Google Patents

Abstract

PURPOSE:To prevent a work dropped out of a conveyor belt from catching on a carrier roller frame of a belt side part and from dropping from the above frame, by providing a hooking prevention device of the work having a rotary piece on the above frame of the side of the belt conveying the work. CONSTITUTION:The titled conveyor conveys a work by a belt 1 supported by a belt pully 2 and a carrier roller 4. In this instance, a carrier roller frame 5 supporting the roller 4 is provided with a hooking prevention device 20 of the work. The device 20 is constituted with a rotary piece 21, a supporting rod 22 supporting the rotary piece 20 and an installing part 23 for installation of the supporting rod 22 on the inside of the frame 5 by supporting both ends of the supporting rod 22. Then, an opening 5b is formed on the top 5a of the frame 5 and the rotary piece 21 is made to protrude alightly above the top 5a by inserting a part of the rotary piece 21 into the opening 5b. With this, if the work is dropped out of the belt 1 during conveyance, the dropped out part is returned on the belt 1 by placing it on an exposed surface of the rotary piece 21.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a conveyor provided with a workpiece catch prevention device that allows workpieces to be smoothly conveyed even if they protrude onto a carrier roller frame.

2. Description of the Related Art Conventional conveyors such as belt conveyors include those shown in FIGS. 1 and 2, for example.

In the figure, glue is a belt, 2 is a head belt sheave, 3 is a tail belt sheave, and 4#'i is a flat carrier roller that supports the conveyance side of the bell stretched between both belt sheaves 2 and 3. ,
Reference numeral 4a designates a tanning roller that similarly supports the return side of the belt 1, 6 designates two carrier row frames that hold these rollers 4°48t, and 6 designates a belt drive device attached to the carrier roller frame 5.

This belt drive device is equipped with a six motor 7 and a transmission 8, and a drive pulley 9 attached to its output shaft is connected to the tail belt pulley 3.
It is connected to a drive pulley 10 attached to the drive chain 11. Then, by operating the speed change handle 8a of the transmission 8 to set a predetermined rotation speed, and turning on the power to the motor using an operation button (not shown), the tail belt pulley 3 is rotated, and the belt 1 is rotated in the arrow direction. It is designed to be driven at a set speed in the direction of the sign. 12 is a long bolt 12a
By pulling out the head belt pulley support frame 2a, which is a push-in and fitted into the carrier roller frame 5, by screwing the long pole 12a, using a screw type belt tensioning device equipped with
The belt pulley 2 can be advanced to tension the belt 1.

The frame is equipped with three casters 14 and supports a carrier roller frame 5 via supports 15.

The conventional belt conveyor configured as described above can be moved to a desired location using casters 14, installed, and then connected to a power source and rotated by an operation button (not shown) to move the workpiece. Since it can be conveyed continuously from the tail toward the head, it is highly maneuverable and easy and convenient to handle.

However, in such a conventional belt conveyor, as shown in FIG. Since the skin of the frame 5 is relatively rough, if the workpiece W shifts and protrudes from the belt 1 during conveyance, it will come into contact with the upper surface 5a of the first carrier roller frame 5.

Since the advancing speed of the contact portion is significantly reduced due to frictional resistance, the workpiece W rotates around the contact portion. Therefore, the deviation of the workpiece W increases as bell) l progresses, and in the worst case,
There was a problem that the workpiece WFi could fall off the conveyor. As a result, the workpiece may be damaged.

This invention was made by focusing on the problems of the conventional carrier roller frame, and a part of the upper surface of the carrier roller frame is exposed, and the workpiece that protrudes from the upper surface of the carrier roller frame is received and the workpiece is transported while rotating. It is an object of the present invention to solve the above-mentioned problems by providing a workpiece catch prevention device in which a plurality of rotating pieces for guiding the carrier roller frame are arranged in parallel in the longitudinal direction of the carrier roller frame.

The present invention will be explained below based on the drawings.

3 to 5 are a plan view and a sectional view of essential parts showing an embodiment of the present invention, and the parts not shown are the same as those of the conventional device.

First, to explain the structure, 20 is a workpiece catch prevention device, which is attached to the inner surface of the carrier roller frame 5 by supporting a bearing ball 2 which is a rotating top, a support rod 22 that holds it, and both ends of this support rod. Mounting part 23.23 for
It is equipped with An opening 5''b is formed in the upper surface 5a of the carrier roller frame 5. A portion of the rotating top 21 is exposed through the opening 5b and slightly protrudes from the upper surface 5a of the frame, and is protected from the belt during conveyance. It is positioned so as to receive the protruding workpiece and guide the workpiece in the transport direction while rotating, and is attached to the carrier roll frame 5 via the attachment portions 23 and 23. Although the attachment of the attachment portion 23 is not shown, , screws may be used, or direct attachment by welding may be used.

The bearing ball 21, which is a rotating piece, is held by a plate 24 as shown in FIG. 5 instead of the support rod 22 shown in FIG.
2. In this case, the catch plate 24 may be provided with #24a to make it easier for one ball 21 to rotate in the belt traveling direction. 25 is a mounting portion corresponding to 23 above.

The rotating pieces 21 of the workpiece snagging prevention device 20 configured as described above are arranged in a line in the longitudinal direction of the carrier roller frames 5, 5 at a predetermined pitch determined in consideration of workpiece control, size, etc. It is set up.

Next, the action will be explained.

When the workpiece being conveyed shifts and protrudes from the belt, the protruding part is moved by the rotating piece 2 of the workpiece catch prevention device 20.
East on the exposed surface of 1. Rotating top 21 that stopped receiving the workpiece
As the work progresses, it rotates slightly and sends the work in the transport direction. In this way, the protruding part of the workpiece is
The belts I and l'li are transferred one after another to the rotating pieces 21 arranged in a row, and are guided in the conveying direction at the same speed. As a result, the friction coefficient of the upper surface 5a of the carrier roller frame has been significantly reduced by the rotating piece 21, and unlike in the past, a large speed difference occurs between the protruding part of the workpiece and the part on the belt. Since there is no rotation, it is possible to completely prevent the workpiece from rotating and falling from the conveyor.

FIGS. 6 and 7 show other embodiments of the invention.

This embodiment differs from the above-mentioned W male side in that the rotating piece of the workpiece catching prevention device 20 that reduces contact frictional resistance is replaced with a conventional bearing ball and is replaced with a wheel roller 31. “Since the exposed portion of the rotating top in the direction toward the center of the rear roller frame 6 can be made sufficiently larger than that of the bearing balls, it is possible to reduce the frictional resistance on the upper surface 5a over most of the width of the carrier roller frame 5. There is an advantage that

Nao: Each of the above embodiments was explained based on a case in which a workpiece catch prevention device was applied to a conventional portable belt conveyor.
Regardless of transportability or identification, any belt conveyor equipped with a carrier roller frame can be applied. Moreover, as a conveyor, it is applicable to a roller conveyor, a chain conveyor, etc.

As explained above, according to the present invention, the structure is such that a part of the workpiece is exposed on the top surface of the carrier roller frame, and the workpiece that protrudes from the top surface of the carrier roller frame during transportation is received and the workpiece is transported while rotating. Since the conveyor is equipped with a device to prevent workpieces from being caught, the multiple rotating pieces that guide the conveyor in the same direction as the longitudinal force direction buttons of the carrier roller frame are used to prevent the work from being caught on the carrier roller frame during conveyance. This has the effect of preventing the workpiece from rotating or falling.

[Brief explanation of the drawing]

Fig. 1 (a) Vi A partially cutaway plan view showing an example of a conventional belt conveyor, Fig. 1 (bl is also a side view, Fig. 2 is a sectional view taken along the line T in Fig. 1, Fig. 3) 4 is a sectional view taken along the line IV-IV in FIG. 3, and FIG. 5 is a sectional view taken along the line ■-W in FIG. The configuration is shown. Fig. 6 is a plan view of the main part of another embodiment according to the present invention, and Fig. 7 is a sectional view taken along the line ■-■ in Fig. 6. 1.・Belt 5...Carrier roller frame 5a...
......Top surface of carrier roller frame W...
·····work

Claims (1)

[Claims] A plurality of rotating pieces, which are partially exposed on the upper surface of the carrier roller frame and which receive the workpiece protruding from the upper surface of the carrier row 2 frame and guide the workpiece in the thinning direction while rotating, are arranged in the longitudinal direction of the carrier roller frame. A conveyor characterized by being equipped with a device to prevent work from getting caught.