JPS6130982Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is an article conveying device used in places where it is necessary to separate articles one by one when conveying articles in a line, such as conveyor equipment in distribution centers and truck terminals. Regarding.

When transporting a large number of items in a line on a conveyor in order to load them one by one onto a truck, etc.
If the articles are separated one by one, handling is convenient and workability is often improved, and separation may become necessary for handling purposes.

For this reason, in conventional conveyor equipment, the
As shown in the figure, an article 2 to be conveyed on a roller conveyor 1 is pivoted so that a stopper 3 can be raised freely from between the rollers, and the stopper 3 is connected to a drive source such as an air cylinder, a solenoid, or an electric cylinder. 4 to raise the stopper 3 and separate the transported articles 2 one by one.

In the disconnection mechanism configured as described above, the drive source 4
There were problems such as high noise, short life, low cutting ability (number of pieces that can be cut in one minute), and inability to freely adjust the operating speed depending on the product.

The present invention relates to an article conveying device made to solve the above-mentioned problems.In the article conveying device equipped with a roller conveyor having a low-speed conveying zone and a high-speed conveying zone, the base is rotatably supported. a pair of levers, the opposite end of which is configured to be able to protrude and retract above the roller from the boundary between the two zones, and a crank mechanism that is connected to each lever and swings the lever in the vertical direction about the rotation axis as a fulcrum. , a pulse motor that rotationally drives the crank mechanism, and a device that automatically detects the protruding and retracting positions of the lever and the transition of the conveyed object from the low-speed conveyance zone to the high-speed conveyance zone; The present invention is characterized in that the pulse motor is configured to automatically start and stop using signals.

Hereinafter, embodiments of the article conveying device of the present invention will be described with reference to FIGS. 2 to 4.

Arrow X points the conveyed article 6 on the conveyor roller 5.
It is equipped with a roller conveyor R configured such that the upstream side is a low-speed conveyance zone L and the downstream side is a high-speed conveyance zone H. Roller conveyor R
The transported article 6 is transported above the low speed transport zone L.
Due to the difference in conveyance speed, when transferring from 1 to high-speed conveyance zone H, the distance between the next conveyed article 6 increases, but the lever 7 bent at about 90 degrees facing this position (Pickel shape) is Swing tip 7
The base end 7B of the lever 7 is arranged so that it can rise freely on the roller conveyor R from between the rollers 5 of A and the roller 5, and the base end 7B of the lever 7 is pivotally connected with a pin 9 to a bracket 8 provided from the conveyor frame. Lever 7
are provided on both the left and right sides of the conveyor line, and the swinging tips 7A are passed through the roller 10 to the rod 1.
1, and the tip 7A of the lever 7 serves as an upright stopper for the subsequent conveyed article 6. A guide member 12 having a linear groove is attached to the lower side of the bent portion of the lever 7, and a slide member 14 pivotally attached to the tip of the crank member 13 is slidably fitted into the linear groove of the guide member 12. The lever 7 swings up and down by pivoting around the crank member 13, forming a slide mechanism in which the tip 7A can rise freely on the roller conveyor. A speed reducer 16 is attached to the rotating shaft 15 of the crank member 13, and further attached to the speed reducer 16 via a coupling ring 17 to a pulse motor 18. A striker 1 is installed on one side of the guide member 12 in order to detect that the tip 7A of the lever 7 has retired from the roller conveyor and stop the rotation of the pulse motor 18.
9 is attached, and the striker 19 comes into contact with the crank member 13 at the bottom dead center, and the limit switch 2
1 to OFF the limit switch 21.
and the limit switch 21.
The rotation of the pulse motor 18 can be stopped by an OFF signal. Also high speed zone H
When the distance between the conveyed article 6 transferred to the conveyor roller 6 and the succeeding conveyed article 6 is widened at the zone boundary, the distal end 7A of the lever 7 is activated to stop the succeeding conveyed article 6 on the conveyor roller 5. For example, a passage detector consisting of a light projecting part 20A and a light receiving part 20B is installed on both sides of a position slightly downstream from the rising position,
The light receiving section 20B detects the passage of the transported article 6 moving into the high speed zone H by receiving the light from the light projecting section 20A, and further raises the tip 7A of the lever 7 based on the light reception signal from the light receiving section 20B. The pulse motor 18 can be rotated.

In order to stop the rotation of the pulse motor 18 in order to stop the tip 7A of the lever 7 when the tip 7A of the lever 7 rises on the roller conveyor R, the striker 19 is brought into contact at the top dead center of the crank 13. Touch it and turn the limit switch 22.
The limit switch 22 is installed so as to turn it off, and a timer that can set a desired time is incorporated in the limit switch 22 so that the rotation of the pulse motor 18 can be stopped until the required time elapses.

Next, the operation of the article conveying device configured as described above will be explained. The roller conveyor R is connected to a power source to be in a driving state, and the pulse motor 18 is also connected to a power source to operate the limit switches 21 and 22 and the light emitting unit 20A.
It is kept energized so that it can be stopped or rotated by. Now, assuming that the initial operation is such that the crank material 13 is at the bottom dead center and the tip 7A of the lever 7 is retired from the roller conveyor R, the articles 6 to be conveyed are placed on the conveyor roller 5 in a line and conveyed. urge Then, since the tip 7A of the lever 7 is not raised, the foremost conveyed article 6 can be transferred from the low-speed conveyance zone L to the high-speed conveyance zone H, but as soon as the foremost conveyed article 6 passes, the light projecting section The light receiving section 20B receives the light from the light receiving section 20A and rotates the pulse motor 18 based on the light receiving signal. The rotation of the pulse motor 18 is decelerated through the reducer 17 and transmitted to the crank member 13. When the crank member 13 rotates, the slide member 14 slides within the guide member 12, and the lever 7 rotates around the pin 9 as the rotation center. It rotates upward, and its leading end 7A stands up at a place where the distance between the conveyed article 6 that has moved onto the high-speed zone H and the conveyed article 6 at the rear end is widened. Tip 7A of lever 7
At the same time as the striker 19 turns off the limit switch 22, the limit switch 2
The OFF signal stops the rotation of the pulse motor 18 for a certain period of time due to the action of a built-in timer in the stopper 7A, and the stopper 7A stops while standing up, and the subsequent conveyed article 6 is received by the roller 10 provided at the top of the stopper 7A. On the other hand, the conveyed article 6 transferred to the high-speed conveyance zone H is conveyed at high speed as it is. Subsequently, when the conveyed article 6 conveyed on the high-speed conveyance zone H and the conveyed article 6 stopped on the low-speed conveyance zone L reach a predetermined distance, the timer of the limit switch 22 goes off, and an ON signal turns on the pulse motor. 18 rotates. Pulse motor 18
When the crank member 13 rotates, the crank member 13 rotates as described above, the lever 7 rotates downward, and the crank member 13 rotates.
When the lever reaches the bottom dead center, the striker 19 comes into contact with the limit switch 21, and the OFF signal from the switch 21 causes the pulse motor 18 to stop rotating, and the tip 7A of the lever 7 retires from above the roller conveyor R and stops. Therefore, the low speed conveyance zone L
All of the conveyed articles 6 that had been stopped at
After passing the installation position with 0B, the above-mentioned operation is repeated again, and the articles to be conveyed are individually separated and conveyed while maintaining predetermined intervals.

As mentioned above, the article conveying device of the present invention has a mechanism in which the lever that rises from between the rollers and serves as a stopper can be raised freely by a crank, and a pulse motor is used as the drive source to rotate the crank, so that it has a long service life. It can be made longer and the noise can be reduced.

In addition, since the pulse motor can be rotated and stopped automatically by a position detection device that detects the upper and lower positions of the lever and a passage detection device that detects the passage of the transported article, the accuracy of the operation time is improved. The separation capacity is increased, labor saving is promoted, and the separation operation speed can be adjusted according to the transported articles, and when used at a distribution center etc., it becomes extremely convenient for stacking packages.

[Brief explanation of the drawing]

FIG. 1 is a schematic structural diagram showing a separation device provided in a conventional article conveying device, and FIGS. 2 to 4 are a plan view, a front view, and a perspective view, respectively, showing an article conveying device according to an embodiment of the present invention. be. R is a roller conveyor, L is a low-speed conveyance zone,
H is a high-speed conveyance zone, 5 is a conveyor roller, 6
7 is the conveyed article, 7 is the lever, 7A is the tip of the lever, 7B is the base end of the lever, 13 is the crank material,
14 is a slide material, 18 is a pulse motor, 20A
20B is a light projecting section, 20B is a light receiving section, and 21 and 22 are limit switches.

Claims (1)

[Scope of utility model registration request] In an article conveyance device equipped with a roller conveyor having a low-speed conveyance zone and a high-speed conveyance zone,
A pair of levers, the base of which is rotatably supported, and the opposite end of which is configured to protrude and retract above the roller from the boundary between the two zones; a crank mechanism that swings the crank mechanism, a pulse motor that rotates with the crank mechanism, and a device that automatically detects the protruding and retracting positions of the lever and the transition of the conveyed object from a low-speed conveyance zone to a high-speed conveyance zone. An article conveyance device comprising: a device configured to automatically start and stop the pulse motor using a signal from the detection device.