JPH0726241Y2 - Rope drive type accumulation roller conveyor roller - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention is directed to a pulley in which a plurality of rollers arranged in parallel on a machine frame are arranged at the end of each roller, and a drive shaft parallel to the machine frame. The present invention relates to a rope drive type accumulation roller conveyor roller capable of transporting and stopping articles by winding a rope around a pulley attached to the roller.

(Prior Art) A transmission rope is wound between a pulley in which a plurality of rollers arranged side by side on a machine frame are arranged at the end of each roller and a pulley attached to a drive shaft parallel to the machine frame. A rope drive type accumulating roller conveyor which is driven to rotate by means of which both ends of the roller are folded back inward to form a small diameter shaft hole portion, and one of the central shafts is installed between parallel machine frames. A pulley having a boss portion is rotatably supported via a bearing with a spacer interposed between the pulley and the machine frame, and the boss portion of the pulley is frictionally transmitted to one small-diameter shaft hole portion of the roller. On the other hand, the other side of the central shaft is supported so as to be slidable in the axial direction, the bearing is fitted into the small diameter shaft hole portion of the other side of the roller, and the bearing is provided between the bearing and the other machine frame. By adjusting member With the interposition of a spring that can adjust the expansion pressure,
Further, there is known a rope drive type accumulation rate roller conveyor characterized in that a pulley attached to a drive shaft parallel to the machine frame can slip between the drive shaft and the drive shaft (for example, Japanese Utility Model Laid-Open No. 64-32814). See the bulletin).

(Problems to be solved by the invention) Commonly used items are packages, pallets,
Plastic pallet, plastic tray, paper, wood,
It is made of various materials and shapes such as iron, and its weight varies. That is, when carrying a lightweight object, the frictional resistance between the roller and the pulley must be made extremely small.
There is a problem that the conveying force acts on the conveyed object when the conveyed object is stopped and the conveyed object is damaged, and when the conveyed object becomes heavy, the frictional resistance becomes extremely large,
There is a problem that the load on the transmission rope becomes excessive and is cut off. If this transmission rope is cut, there is a big problem in maintenance that the replacement must be performed without the drive shaft.

The above-mentioned conventionally known rope drive type accumulation roller conveyor is capable of freely adjusting the frictional force between the roller and the pulley from a small frictional force to a large frictional force, and conveys from a lightweight conveyed object to a heavy conveyed object. It is also possible to stop the rope, prevent the heavy load from being applied to the transmission rope even when the heavy load is stopped, and prevent the rope from being broken. In addition, it is effective because it can enhance the safety.

However, in the case of a conveyor that is mass-produced as a standard product that always carries the same goods without changing the weight of the goods, an adjusting member that can adjust the expansion elastic force of the spring is necessary. Instead, it is sufficient to use springs that have the same expanding elastic force.

However, even with such standard products that are mass-produced,
For example, thrust may be required at the merging position and the branching position. In this case as well, a spring having a larger elastic force than the spring used in the standard product may be used as the spring, but this has a problem that parts having different standards must be prepared.

In view of the above problems, the present invention uses the same standard product,
The purpose of the present invention is to provide a roller capable of producing a special thrust by a very simple means.

(Means for Solving the Problem) Therefore, in this invention, a plurality of rollers arranged in parallel on the machine frame are attached to a pulley arranged at the end of each roller and a drive shaft parallel to the machine frame. A roller for a rope drive type accumulating roller conveyor in which a transmission rope is wound around a pulley and driven to rotate, and both ends of the roller are folded inward to form a small-diameter shaft hole portion. ,
A spacer is interposed between the machine frame and one of the central shafts installed between the parallel machine frames, and a pulley having a boss portion is rotatably supported via a bearing, and an axial direction is provided outside the boss portion. An extending groove is formed, and the boss portion of the pulley having the groove is fitted into one of the small-diameter shaft holes of the roller in a frictionally transmitted state, while the bearing is axially slid on the other side of the central shaft. It is movably supported, and this bearing is fitted in the other small diameter shaft hole of the roller,
A spring is interposed between the bearing and the other machine frame, and is further press-fitted into the groove formed in the boss between the folded end of the roller and the boss of the pulley so as to be detachable. It is characterized in that it includes a friction pin.

(Operation) According to the present invention, in a state where the friction pin is not press-fitted into the groove of the boss portion of the pulley, as in the conventionally known rope drive type accumulation rate roller conveyor, a conveyed object having a constant weight as standardized is conveyed. When the transported object is stopped, the roller and the pulley are slipped to stop the rotation of the roller, and the thrust force is not applied to the transported object.

On the other hand, when the friction pin is press-fitted into the groove of the boss portion of the pulley, the pulley and the roller are firmly in close contact with each other, and the roller is surely rotated to give a thrust to the conveyed object.

(Embodiment) The present invention will be described in detail with reference to a preferred embodiment shown in the drawings.

In the figure, reference numerals 1 and 1 denote a pair of parallel machine frames fixedly mounted on the legs 2 and 2, and central axes 4 and 4 respectively supporting rollers 3 and 3 are installed in parallel between the machine frames 1 and 1. ing. This central axis 4 is the above machine frame 1,1
The notches 5, 5 formed in the above are installed by dropping both ends thereof, and this structure allows the roller 3 and the central shaft 4 to be easily removed from the machine casing 1, 1.

Reference numeral 6 shown in FIGS. 3 and 4 denotes a drive shaft provided in a lower position of one of the machine casings 1 in parallel with the machine casing 1, and is a drive fixedly mounted on a horizontal rod 7 provided between the machine casings 1, 1. It is configured to rotate via a belt 9 that is stretched between the motor 8 and the motor 8. The drive shaft 6 has pulleys 1 at the positions corresponding to the rollers 3, respectively.
Nos. 0 and 10 are attached, and this pulley 10 is also attached to the drive shaft 6 so as to be able to slip.

As shown in FIG. 1, the roller 3 has both ends folded back inward to form a small diameter shaft hole. On one side of the central shaft 4, a spacer 11 is interposed between the machine frame 1 and a pulley 13 is rotatably supported via a bearing 12.
This pulley 13 is provided with a boss portion 14.
The roller 14 is fitted in one of the small diameter shaft holes of the roller 3 in a frictionally transmitted state. A transmission rope 15 is wound around the pulley 13 and the pulley 10 of the drive shaft 6.

A bearing 16 is supported on the other side of the central shaft 4 so as to be slidable in the axial direction, and the bearing 16 is fitted into the other small diameter shaft hole portion of the roller 3. Reference numeral 17 in the figure denotes a spring interposed between the bearing and the machine frame 1, and the expanding elastic force of the spring 17 causes a frictional force to act between the pulley 13 and the roller 3 on the opposite side.

Particularly, in the present invention, a groove 18 extending in the axial direction is formed on the outside of the boss portion 14 of the pulley 13, and the groove 18 is formed.
A friction pin 19 made of synthetic resin is press-fitted in a removable manner while being positioned inside. One end of the groove 18 is extended into the pulley 13 to form an extended recess 20, and if a friction pin 19 is inserted and held in the recess 20, the pulley boss 14
The work of fitting the roller to the small diameter shaft hole of the roller can be facilitated.

With the roller conveyor of the present invention having the above-mentioned configuration,
When the drive motor 8 is driven without inserting the friction pin 19 into the groove 18 of the boss portion 14 of the pulley 13, the drive shaft 6 rotates via the belt, and the pulley 10 of the drive shaft 6 rotates. Roller 3 which is in frictional connection with the pulley 13 by rotating the pulley 13 of the center shaft 4 by circulating the transmission rope.
To rotate. Therefore, the conveyed material on the roller 3 is
Transfer in the direction of rotation.

Thus, when the conveyed object stops its movement and a load is applied to the roller 3, the roller 3 slips between the roller 3 and the pulley 13, the roller 3 stops its rotation, and the conveyed object is stopped. become.

When used as a general accumulation roller conveyor, the friction pin 19 is not used as described above. However, for example, for a roller that surely needs thrust at the joining position, the branching position, etc., as shown in FIG. When the friction pin 19 is inserted into the concave groove 18 of the boss portion 14 as shown in FIG. 2 and the pin 19 is interposed between the friction pin 19 and the small diameter shaft hole portion of the roller 3, the roller 3 and the boss portion 14 are separated from each other. It fits very tightly and closely, and the drive force of the drive shaft is surely transmitted to the roller to surely convey the conveyed object.

(Effect of the Invention) As described above, in the present invention, the groove extending in the axial direction is formed on the outer side of the boss portion of the pulley, and the friction pin is removably inserted in the groove. It can be used as a roller for a normal accumulating roller conveyor in the absence of the above, and can also be used as a roller for reliably transmitting the driving force by using the same standard product and only inserting a friction pin. , Has the advantage that it is extremely practical as a standardized conveyor roller for mass production.

[Brief description of drawings]

The drawings show a preferred embodiment of the present invention. FIG. 1 is a sectional view of a state in which a friction pin is not inserted, FIG. 2 is a sectional view of a main part in a state of inserting a friction pin, and FIG. The figure is a side view of the entire conveyor, and FIG. 4 is a front view of the entire conveyor. 1 …… machine frame, 3 …… roller 4 …… center shaft, 6 …… drive shaft 10 …… pulley, 11 …… spacer 12 …… bearing, 13 …… pulley 14 …… boss part, 15 …… transmission rope 16 …… Bearing, 17 …… Spring 18 …… Concave groove, 19 …… Friction pin

Claims (1)

[Scope of utility model registration request] 1. A transmission rope is wound between a pulley in which a plurality of rollers arranged in parallel on a machine frame are arranged at the end of each roller and a pulley attached to a drive shaft parallel to the machine frame. A roller for a rope drive type accumulating roller conveyor that is driven to rotate by means of a central shaft erected between parallel machine frames by folding both ends of the roller inward to form a small diameter shaft hole. A pulley having a boss portion is rotatably supported via a bearing on one side with a spacer between the machine frame and a groove extending in the axial direction is formed on the outside of the boss portion. The boss portion of the pulley having the above is fitted in a state in which it is frictionally transmitted to one small diameter shaft hole portion of the roller, while the other of the central shafts is made to support a bearing slidably in the axial direction, and this bearing is Other small diameter shaft And a spring interposed between the bearing and the other machine frame, and between the folded end of the roller and the boss of the pulley in a groove formed in the boss. A roller for a rope-driven accumulation rate roller conveyor, which includes a friction pin that is positioned and detachably press-fitted.