JP2993317B2 - Can fall prevention device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for preventing a can from falling off during transportation.

[0002]

2. Description of the Related Art Conventionally, as a device for transporting a can from the output side of a printing device that performs printing on the outer peripheral surface of the can to another process,
The pin chain conveyor shown in the specification and drawings of Japanese Utility Model Application No. 2-33014 is used. A schematic configuration of the pin chain conveyor will be described with reference to FIGS. This conveyor has a chain 1 formed in an endless ring, a plurality of sprockets 2 meshing with the chain 1, a large number of pins 3 attached to the chain 1 and extending in the horizontal direction, and a tip of the pin 3 A fixed pin tip 4, which is arranged to face the pin tip 4, and
It is mainly composed of a long air duct 5 extending along the running direction of the chain 1.

[0003] The air duct 5 is formed in a hollow rectangular tube shape, and a blower (not shown) for feeding air into the air duct 5 through a pipe is connected to a back surface thereof. Front surface of air duct 5 (surface facing pin tip 4)
Are formed with a large number of outlets 5 a at intervals in the longitudinal direction of the air duct 5. The air duct 5
It is installed along the transport direction of the pin chain conveyor over substantially the entire length thereof.

According to this conventional conveyor, as shown in FIG. 5, a pin chip 4 is covered with an aluminum alloy can C formed in a cylindrical shape with a bottom, and a chain 1 is driven by a sprocket 2. Thereby, the can C can be transported. In such a conveyor, the can C can be transported without the outer peripheral surface of the can C coming into contact with other members. Therefore, it is possible to prevent the printing surface of the can C from being soiled during the transportation.

In the conventional apparatus, the can C is put on the pin chip 4 and the can C is moved at a high speed (usually 50 pins).
0 cans / minute to 1500 cans / minute). Therefore, conventionally, in order to prevent the can C from dropping or displacing, compressed air is blown from the outlet 5a of the air duct 5 toward the can C, and the can C is pressed toward the base end of the pin chip 4. .

However, in the conventional apparatus, since the compressed air is blown all at once from the blowout port 5a of the air duct 5 installed substantially over the entire length of the pin chain conveyor, the blowout sound is extremely loud and the conversation becomes difficult. However, there is a problem that the working environment is deteriorated and there is a possibility that the location of the factory is restricted.

[0007]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and has as its object to provide an apparatus for preventing falling off of cans which can eliminate the noise of compressed air and reduce factory noise. The purpose is.

[0008]

According to a first aspect of the present invention, there is provided an apparatus for preventing falling of a can, comprising a plurality of pins for transporting a cylindrical aluminum can having an opening on one end over a tip thereof, and a plurality of pins extending along a running direction of the plurality of pins. And a linear motor stator for applying a force to the base end side of the pin with respect to the aluminum can covered with the pin.

[0009]

The can is pressed toward the base end of the pin by the electromagnetic force generated from the stator of the linear motor. This allows
The can can be prevented from falling off the pin.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An apparatus for preventing falling off of a can according to one embodiment of the present invention will be described with reference to FIGS. In the description of the device according to the present embodiment, the same reference numerals are given to the same components as those of the conventional device, and the detailed description is omitted.

In the apparatus of this embodiment, the stators 10 and 11 of the linear motor having a long rectangular cross section are used.
However, they are different from the conventional device in that they are provided along the running direction of the pins 3 and opposed to each other with the pins 3 interposed therebetween, and that the air duct 5 is not provided. Each of the stators 10 and 11 is configured to apply an electromagnetic force to the base end side of the pin 3 to the can C placed on the pin chip 4. As a result, the aluminum alloy can C, which is a non-magnetic conductor, is pressed against the pin chip 4 and is transported with the rotation of the chain 1 in this state.

Therefore, according to the apparatus of the present embodiment, the linear motor stators 10 and 11 can prevent the transported can C from being dropped or displaced.

Further, according to the apparatus of this embodiment, it is not necessary to use the air duct 5 as in the prior art, so that the amount of noise generation can be greatly reduced. Therefore, there is an advantage that the working environment can be improved.

Further, in the apparatus of this embodiment, since the stators 10 and 11 of the linear motor are provided to face each other with the pin 3 interposed therebetween, it is possible to apply a large force to the can C. Therefore, even when the can C is conveyed at a high speed, there is an advantage that it is possible to reliably prevent the can C from falling off or being displaced.

In the apparatus of this embodiment, two stators 10 and 11 are provided as stators of the linear motor. However, when the transport speed is low, only one of the stators is provided. It is good.

[0016]

According to a first aspect of the present invention, there is provided a can drop prevention device, comprising: a plurality of pins for transporting a cylindrical aluminum can having an open end on a tip thereof; In addition, since the aluminum can covered with the pin is provided with a linear motor stator that applies a force to the base end side of the pin, it is necessary to use an air duct as in the related art. And the amount of noise generated can be greatly reduced. Therefore, there is a practically important effect that the factory noise can be reduced and the working environment can be improved.

[Brief description of the drawings]

FIG. 1 is a view showing a main part of a device for preventing falling off of a can according to one embodiment of the present invention, and is a view taken along the line BB in FIG. 2;

FIG. 2 is an enlarged view taken along the line AA of FIG. 1;

FIG. 3 is a perspective view showing an outline of a conventional device for preventing falling off of a can.

FIG. 4 is a longitudinal sectional view of a main part of a pin chain conveyor used in a conventional can dropout prevention device.

FIG. 5 is an enlarged view of a main part of FIG. 3;

[Explanation of symbols]

 3-pin 10 ・ 11 Linear motor stator C Aluminum can

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) B65G 21/20 B65G 17/32

Claims (1)

(57) [Claims] 1. A plurality of pins for transporting a cylindrical aluminum can having an opening on one side over a tip thereof, and a plurality of pins disposed along a traveling direction of the plurality of pins and for the aluminum can covered on the pins. A linear motor stator for applying a force to the base end side of the pin.