JPH01303215A - Line conveyer device - Google Patents

Abstract

PURPOSE:To ease the change of a transfer speed by providing chains corresponding to plural motors having different speeds respectively, and enabling engagement with each chain by changing a sprocket mounting position to the shaft with a roller. CONSTITUTION:Roller chains 3a and 3b are arranged to the both sides of a line conveyer device 1, and each chain is connected with a high and a low speed motor 2a and 2b respectively. And each chain is endlessly driven with a guide roller 5, roller chain tensioner 4, and fore and aft sprockets 15a and 15b. On the other hand, the roller-attached shaft 6 integrated with a roller 7 is supported with a bearing 8, and the sprocket 9 mounted on the outer side of the shaft 6 is composed so that the engagement with chains 3a and 3b is selectively changeable. Consequently, a speed can be selected at every given section.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a conveyor device that allows the transfer speed to be easily switched depending on the work section on the same line conveyor.

(Prior art) Conventionally, when assembly lines using conveyors are located on the same straight line, and there is a hybrid line where humans work on some sections and machines work on other sections, the transfer speed varies depending on the section. It is preferable to change the speed, for example, to improve work efficiency by slowing down the working area for humans and increasing the speed for the working area for machines.

In such a case, in a system using a roller conveyor, each individual conveyor device is combined, i.e., a high-speed conveyor device with a high-speed motor is used in the high-speed section, and a low-speed conveyor device with a low-speed motor is used in the low-speed section, and they are moved in the same straight line. Regarding conveyor systems in which conveyors are arranged in series to form a line or convey pallets together, the
A device as shown in No. 9-8804 is known.

(Problem to be solved by the invention) However, in the conventional method, it is necessary to change the speed range of each section when it becomes necessary to change the configuration of the assembly line or when machines perform human work. When this occurs, it is necessary to replace the entire conveyor, which takes time and increases costs.
Even in the case of No. 04, there was a problem in that it was necessary to reinstall the cam plate extending along the travel route in order to change the speed, which was time-consuming.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention provides a roller conveyor device that uses a chain drive to rotate a large number of shafts with rollers each having a sprocket. Multiple chains with different running speeds driven by motors are installed in parallel,
The sprocket is configured to be movable on a shaft with rollers so that either chain can be selected and the sprocket can be engaged with the chain.

(Function) For example, if this device is configured with two high-speed and low-speed motors and a chain, by meshing a sprocket in a certain section with the high-speed chain, the sprocket in that one section will rotate at high speed and connect with the sprocket. The rollers also rotate at high speed. Conversely, when the sprocket is brought into mesh with the low-speed chain and disengaged with the high-speed chain, the rollers in that section rotate at low speed. Naturally, the roller will not rotate unless it is connected to either chain.

(Example) An example of the present invention will be described based on the attached drawings.

Figures 1 to 3 show one embodiment of this device, where Figure 1 is a plan view of the device, Figure 2 is a side view of the same, and Figure 3 is a longitudinal section of the device seen from the front. It is a diagram.

1 and 2, roller chains 3a and 3b are provided around both sides of the line conveyor device 1, corresponding to the respective motors. That is, a high-speed chain 3a is connected to the high-speed motor 2a on one side, and a low-speed chain 3b is connected to the low-speed motor 2b on the other side, and a guide roller 5 and a roller chain tensioner 4 are interposed so as to wrap around the front and rear sub-blocks 15a and 15b. Each has an endless track shape.

- On the upper part of the blade device are the roller chains 3a, 3b.
A large number of roller-equipped shafts 6 are arranged in parallel in a direction perpendicular to the roller-equipped shaft 6, and a roller 7 is integrally connected to the roller-equipped shaft 6 so as to be rotatable on the spot. This situation will be explained with reference to FIG. 3. The roller-equipped shaft 6 to which the roller 7 is attached has both ends thereof fitted into bearings 8 and supported. Furthermore, a sprocket is attached to the outside of the shaft 6 with rollers, and is fixed with a nut 10. Below the sprocket 9, a roller chain guide 11 and a chain rail 12 for returning the roller chain are provided, which mesh with a large number of sprockets. The roller chains 3a, 3b are provided so as to surround the front and rear sprockets 15a, 15b and the chain rail 12. The sprocket 9 meshes with the high-speed chain in a certain section and with the low-speed chain in a certain section, and this change is made by removing the nut 10.

Next, regarding this handling, as mentioned above, it is done by meshing the sprocket of the desired section with the required chain side.In this example, two cases of high speed and low speed are illustrated, but more than that is also possible. Needless to say.

(Effects of the Invention) Since the present invention is configured as described above, it is possible to save labor and time for changing the transfer speed of the section, which was conventionally required, and it has become possible to respond easily and quickly. Furthermore, since the entire system is simplified, the number of drive motors can be reduced, which is effective in terms of cost.

[Brief explanation of the drawing]

Figures 1 to 3 show one embodiment of this device, where Figure 1 is a plan view of the device, Figure 2 is a side view of the same, and Figure 3 is a longitudinal section of the device seen from the front. It is a diagram. In the drawing, 1 is a line conveyor device, 2 is a motor, 2a is a high speed motor, 2b is a low speed motor, 3 is a roller chain, 3a
is a high-speed chain, 3b is a low-speed chain, 4 is a roller chain tensioner, 5 is a guide roller, 6 is a shaft with a roller, 7 is a roller, 8 is a bearing, 9 is a sprocket, 10 is a nut, 11 is a roller chain guide,
12 is a chain rail, 13 is a chain cover, 14 is a shaft cover with roller, 15a is a front block)
, 15b indicates the rear sprocket.

Claims (1)

[Claims] A sprocket is attached to a shaft with many rollers arranged in parallel, a motor-driven chain is meshed with the sprocket, and the chain is run in an endless track to move the shaft with many rollers. A roller conveyor device that rotates on site has multiple motors with different rotational speeds and multiple chains corresponding to each motor, and the mounting position of the sprocket relative to the shaft with rollers is changed so that the sprocket can mesh with any chain. A line conveyor device that is characterized by its flexibility.