JPS6344647B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a transfer device for transferring empty cans from a conveyor that transfers them intermittently to a conveyor that transfers them continuously while maintaining the attitude of the empty cans in a can manufacturing process.

In the can manufacturing process for welded cans, after the side seams of the cans are welded and the side seam portions are corrected by painting, the empty cans are subjected to dry baking of the corrected portions in a curing oven.

In the paint correction equipment, empty cans are transferred intermittently in groups of 4 due to the need for correction painting by spraying, etc., but the oven conveyor is used to avoid problems such as stretching of the chain in the high-temperature oven.
Operated continuously. Moreover, thermal efficiency can be improved by directly applying hot air to the correction surface in the curing oven. For this reason, it becomes necessary to position the empty cans on the magnetic bucket of the correction device, which is operated intermittently, so that the top surface on which the correction spray is applied does not shift, and then transfer them to the continuously operated conveyor of the curing oven.

The present invention has a transfer device that has a gripper for gripping empty cans and can rotate 180 degrees between both conveyors running in parallel, and the empty cans are removed the moment the magnetic bucket of the correction device stops. Grasp the cans four at a time, lift them up and rotate them 180 degrees to transfer them onto the oven conveyor, then lower the gripper while accelerating to the same speed as the oven conveyor,
The empty can is placed on the bucket on the oven conveyor and it rises again, after which the gripper stops and returns to its original position. This repeated operation makes it possible to transfer empty cans from an intermittent conveyor to a continuous conveyor while positioning them.

A detailed explanation will be given below with reference to the drawings.

FIG. 1 is a front view of the transfer device of the present invention, FIG. 2 is a side view, and FIG. 3 is a plan view.

The gripper base 1 is made of aluminum or the like having a low specific gravity to reduce inertia since it is necessary to rotate and stop rapidly for high-speed operation. Four sets of grippers 3 for gripping empty cans 2 are provided on the lower surface of each set of bases 1, and are opened and closed by air cylinders 4 which are gripper opening/closing devices.

This gripper base 1 is attached to the piston of a vertical air cylinder 6, which is a gripper vertical movement drive device, provided on an air cylinder base 5 having an H-shaped plane, and by rising to the dotted line position in Figure 1, the gripper 3 becomes empty. Allow base 5 to rotate can 2 by 180 degrees.

The air cylinder base 5 is fixed to a rotator of a servo motor 8, which is a gripper moving device on a traveling table 7, and is rotated 180 degrees for transferring empty cans.

4 and 5 are a front view and a side view of the entire transfer device of the present invention. The above traveling platform 7 is the machine frame 14
A slider 10 is slidably slidable on a rail 9 provided in the
It is fitted and supported by an air cylinder 11, which is a traveling device, and slid by an air cylinder 11, which is a traveling device.

12 and 13 are empty can moving conveyors for the correction device and curing oven, respectively, and the bucket 14 provided on the conveyor is usually a magnetic bucket for the correction device, and the oven bucket is a simple V-shaped bucket. It is a metal fitting.

The empty can transfer device of the present invention having the above structure operates as follows.

Empty cans 2 whose side seams have been corrected by spraying or the like are adsorbed onto the magnetic bucket 14 so that the side seams are located at the upper end by the correction device, and are intermittently transferred four cans at a time. It is sent under the empty can transfer device.

The upper and lower air cylinders 6 are activated at the same time, and the gripper base 1 is lowered to the solid line position in Figure 1, and the gripper opening/closing air cylinder 4 is activated.
is activated, and the gripper 3 grips each of the four empty cans 2. Next, the gripper base 1 is raised to the dotted line position in Figure 1 by the air cylinder 6, the empty can 2 is lifted from the bucket 14, and the base 1,
It rises to a height that does not interfere with the rotation of 5.

Next, the servo motor 8 is activated, the air cylinder base 5 is rotated 180 degrees, and the lifted empty can 2 is
It is displaced from the correction device conveyor 12 onto the oven conveyor 13.

At the same time, the air cylinder 11 is operated to cause the carriage 7 to slide in the feeding direction of the conveyor 13. Travel platform 7
When the traveling platform 7 is accelerated until the moving speed of The gripper 3 releases the empty can by actuation of the cylinder 4.

The gripper base 1 is pulled up by the air cylinder 6 while the running platform 7 is still sliding at the same speed as the conveyor 13. After the gripper base 1 is raised to a height where the gripper 3 does not collide with the empty can 2, the running platform 7 is moved to the air cylinder 11. It is then stopped and then returned to its original position.

At this time, the gripper 3 on the other side of the air cylinder base 5 is just above the correction device conveyor, so the above transfer cycle is repeated again.

As described above, the empty can transfer device of the present invention uses grippers to grip and lift empty cans from the correction device conveyor 12, which performs intermittent transfer, when the conveyor 12 is stopped.
Since the empty cans are accelerated at the same speed as the continuous conveyor 13 and are placed on the conveyor 13 with a relative movement speed of zero, the side seam of the empty cans is placed at the top end correctly on the conveyor 13 as well as on the conveyor 12. You can move it to suit your position.

In the above embodiment, in order to improve the transfer speed, the air cylinder base 5 rotates 180 degrees to transfer empty cans from the top of the conveyor 12 to the top of the conveyor 13, and at the same time transfers empty cans from the top of the conveyor 12 to the top of the conveyor 13. is brought onto conveyor 12 to prepare for the next cycle, gripper 3
Two sets of grippers can be operated alternately every time the gripper rotates 180 degrees, and as a result, there is no loss of time in the so-called return stroke, and the time can be shortened.

Although the above embodiment has been described as transferring from an intermittent operating conveyor to a continuously operating conveyor, it goes without saying that transfer from a continuously operating conveyor to an intermittent operating conveyor is possible by reversing the order of operation. .

The present invention is configured as described above, and can transfer empty cans between a continuous operation conveyor and an intermittent operation conveyor at a relative moving speed of zero, so that positioning at the time of transfer is accurate. The empty cans can then be transferred to the continuously operating conveyor so that the side seam portion of the empty cans is correctly positioned at the top. and,
Since the gripper is rotated between both conveyors, the gripper starts and stops very smoothly when moving, and positioning during transfer is easy.Moreover, it can be rotated in a short time, increasing speed. can be achieved. Furthermore, since the gripper is configured to rotate,
It is also possible to provide two sets of grippers symmetrically so that the grippers are positioned on both conveyors at the same time, which provides excellent effects such as enabling even higher speed transfer.

[Brief explanation of the drawing]

1 and 2 are front and side views of essential parts of one embodiment of the empty can transfer device of the present invention, FIG. 3 is a plan view, and FIGS. 4 and 5 are front views of the entire device. , a side view. 1: Gripper base, 2: Empty can, 3: Gripper, 4, 6, 11: Air cylinder, 7: Running platform, 8: Servo motor, 9: Rail, 12, 1
3: Conveyor, 14: Machine frame.

Claims (1)

[Claims] 1. An empty can transfer device between a conveyor that is operated intermittently and a conveyor that is operated continuously, which is a traveling platform that is arranged to be able to run freely along the top of the continuously operating conveyor; a traveling device for traveling at the same speed as the conveyor; an empty can gripping gripper supported on the traveling platform so that the upper part of the continuous operation conveyor and the upper part of the intermittent operation conveyor can be rotated and moved up and down; A gripper moving device that rotationally moves between the upper part of the conveyor and the upper part of the intermittent operation conveyor, a gripper vertical movement drive device that drives the gripper up and down, and a gripper that moves the gripper when the conveyor that is intermittently operated is stopped, and when the conveyor that is continuously operated and the gripper A device for transferring empty cans between conveyors, comprising a gripper opening/closing device that is activated when the speeds of the conveyors become the same.