JPS5911924Y2 - roller conveyor device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a roller conveyor device, and more particularly, to a structure for guiding a belt in a roller conveyor that rotates rollers by driving an endless belt.

Conventionally, this type of roller conveyor device has a structure in which an endless drive belt that contacts each roller is suspended along the lower part of each roller, and each roller is driven by the drive belt.

Generally, a ■-shaped belt and a flat belt are used for this drive belt, but the ■-shaped belt does not have a long length, and short V-shaped belts of a fixed length are connected to make the roller conveyor longer. This method has the disadvantage of poor assembly workability, as it is difficult to connect the ■-shaped belt.

In addition, flat belts can be shaped into any length and are easy to connect, but since these flat belts tend to meander, the push-up roller is integrally equipped with a collar to prevent the flat belt from meandering. There is.

However, even with this structure, since the collar rotates in the same direction as the push-up roller, there is a risk that the belt may ride on the collar, and there is a drawback that a uniform driving force cannot be applied to the conveyor roller.

The present invention was developed in view of the above points, and a rotating body rotating around an axis perpendicular to the axis of the push-up roller is mounted on the shaft opposite the side edge of the flat belt, and the meandering of the flat belt is prevented. The present invention provides a roller conveyor device that can prevent the above problems and provide a uniform driving force to the conveyor rollers.

Next, the structure of an embodiment of this invention will be explained with reference to the drawings.

Reference numeral 1 denotes a frame, which includes a pair of frame members 2, 2 on both sides having a substantially U-shaped cross section arranged in parallel, and cross-jointed frame members 3 having a rhombic cross section arranged at predetermined intervals between the frame members 2, 2. The cross-jointed frame member 3 is fixed to the frame members 2 by a pair of bolts 4 passing through the frame member 3.

The shafts 6 of a plurality of conveyor rollers 5 are rotatably mounted in parallel at predetermined intervals on both frame members 2, 2 of this frame 1, and the frame members 2 of the shafts 6 of each conveyor roller 5
, 2 is fitted with an elastic body 7 made of rubber or the like, and this elastic body 7 allows the shaft 6 to be fixed to the frame member 2.
, 2 is prevented from coming off, and noise generation is also prevented.

Next, reference numeral 8 denotes a push-up roller, which is rotatably mounted on a shaft 9 that is mounted between the frame members 2, 2 at intervals of a plurality of the conveyor rollers 5.

This push-up roller 8 is connected to one end 1 of the conveyor roller 5.
It is mounted on a shaft at a lower side, and its position is restricted to one end side of the shaft 9 by a protrusion 11 formed by a deformed portion 10 of the shaft 9.

Both ends of this shaft 9 protrude from the shaft support holes 12 of the frame members 2, 2, and an adjustment plate 1 is attached to the protruding end of this shaft 9.
An elastic body 14 such as rubber is fitted onto the shaft 9 via the shaft 9 to prevent the shaft 9 from moving in the axial direction.

The adjustment plate 13 is shaped like a polygonal cam, has a shaft hole 15 formed at an eccentric position, and has an outer peripheral portion 17 engaged with a receiving portion 16 formed on the frame members 2, 2. The height position of the shaft 9 is adjusted by rotating the adjustment plate 13.

Further, reference numeral 18 denotes a flat belt feed roller that is rotatably mounted at a plurality of locations below the frame members 2, 2.

Reference numeral 19 denotes an endless flat belt, which is suspended around each push-up roller 8 along the lower portion of one end of each of the conveyor rollers 5, and is brought into contact with the lower portion of one end of each conveyor roller 5.

Then, by adjusting the adjustment plate 13, the flat belt 19
The contact pressure with respect to each conveyor roller 5 is adjusted.

Also, 20. Reference numeral 20 denotes a rotary guide body formed into a cylindrical shape made of synthetic resin, and is vertically attached to the horizontal joint frame 3 so as to rotate around an axis 21 perpendicular to the axis 9 of the push-up roller 8. It is rotatably fitted to a shaped shaft 21 via a collar 22 with a bolt attached to the belt 19.
are placed on both sides of the

Note that a flat washer 24 is interposed between the head 23 of the shaft 21 as a bolt and the end surface of the collar 22.

Further, the flat belt 19 is driven by a drive pulley rotated by an electric motor (not shown).

Next, the operation of this embodiment will be explained.

When the flat belt 19 is driven by the electric motor, the flat belt 19 is guided by each push-up roller 8 and the flat belt feed roller 18 and rotates each conveyor roller 5.

The conveyed objects on the conveyor rollers 5 are conveyed by the rotation of each conveyor roller 5.

When the flat belt 19 rotates, both side edges of the flat belt 19 are rotated by rotating guide bodies 20. 20 and the route can be made without meandering.

According to the present invention, a rotary guide body is provided opposite to the side edge of the flat belt and rotatably supported around an axis perpendicular to the axis of the push-up roller of the belt. Even if a flat belt is used, the flat belt can be rotated along each conveyor roller without meandering, and a uniform driving force can be applied to each conveyor roller, ensuring reliable conveyance. Since the length can be arbitrarily shaped and connection is easy, it can easily correspond to the length of the roller conveyor device.

A flat belt is provided along the lower part of one end of each conveyor roller, and the push-up roller is also positioned at one end by the protrusion of its shaft. Even when installing various sensors located between conveyor rollers or conveyor rollers, they can be installed at the optimal position in the center on both sides, and the drive motor of the flat belt can also be directly connected to the drive rollers. The drive motor can be housed in the frame, and the drive motor for the flat belt can also be directly connected to the drive roller, and the drive motor can be housed in the frame. Since the conveyor rollers are located on the sides, the conveyor rollers are not soiled by objects moving in the center, and each conveyor roller can be reliably driven. Dirt is not transmitted to the conveyed object via the conveyor roller.

In addition, the push-up roller has a protrusion formed by deforming the shaft to prevent axial movement, making the structure simple and easy to assemble. When held by the body, the shaft can be easily held, noise can be prevented, and a conveyor device that is lightweight and can be made into a unit is obtained.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an embodiment of the present invention, Fig. 2 is a front view of the same, Fig. 3 is an enlarged front view of the push-up roller portion of the above, Fig. 4 is a longitudinal sectional side view of the same, and Fig. 5 is a front view of the same. FIG. 6 is a front view of the shaft of the push-up roller, FIG. 6 is a longitudinal sectional front view of the rotary guide body portion of the same, and FIG. 7 is a longitudinal sectional side view of the same. 1...Frame, 5...Conveyor roller, 8...Pushing roller, 9...Shaft,
11... Protrusion, 14... Elastic body, 1
9... Flat belt, 20... Rotating guide body.

Claims (2)

[Scope of utility model registration request] (1) a plurality of conveyor rollers that are shaft-mounted in parallel between both sides of the frame; an endless flat belt that is suspended along the lower part of one end of each of the conveyor rollers and comes into contact with the lower part of the one end of each of the conveyor rollers; a push-up roller which is rotatably mounted on the frame and positioned on one end side of the shaft by a protrusion formed on the shaft, and brings the belt into contact with the conveyor roller; A roller conveyor device comprising: a rotary guide body rotatably mounted on the frame so as to be rotatable around an axis perpendicular to the axis of the push-up roller. (2) The roller conveyor device according to claim 1, which is a registered utility model, characterized in that an elastic body for preventing the shaft from coming off is fitted to the end of the shaft on which the push-up roller is mounted, protruding from the frame.