JPH07214388A - Empty can disposal device - Google Patents

Abstract

PURPOSE:To introduce all the empty can into a press machine and to press all in the press machine even if the empty cans cause the bridge phenomenon at the vicinity of the bottom of a hopper. CONSTITUTION:When empty cans cause the bridge phenomenon and are stagnated at the vicinity of the bottom of a hopper 8, after a hopper open detecting means 30 is detected, a hopper empty detecting means 21 is not detected, a hopper opening/closing controlling means 44 acts the bottom lid of the hopper 8 in the closing direction and breaks the bridge phenomenon, and the bottom lid is opened again and all the empty can 5 is introduced to the press machine 7.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used in the field of preventing an empty can from remaining in the hopper due to a bridge phenomenon when the empty can is guided to a press machine.

[0002]

2. Description of the Related Art Conventionally, when the empty can in the hopper reaches a specified amount, the bottom lid at the bottom of the hopper is opened, the empty can in the hopper is guided to a press machine, and the block processing is performed by the press machine. I have to.

[0003]

[Problems to be solved] Therefore, when the bottom lid at the bottom of the hopper is opened to guide some empty cans to the press, most of the empty cans cause a bridge phenomenon near the bottom of the hopper. Therefore, most of the empty cans are not guided to the press machine, and only a part of the empty cans can be pressed by the press machine, and there is a problem that a specified amount of empty cans cannot be pressed.

Therefore, an object of the present invention is to enable all the empty cans to be guided to a press machine and to be pressed by the press machine even if the empty cans cause a bridge phenomenon.

[0005]

SUMMARY OF THE INVENTION In order to achieve the above object, the present invention is an empty can processing apparatus in which a bottom cover at the bottom of a hopper is opened and an empty can in the hopper is guided to a press machine to be pressed into blocks. The hopper open detection means for detecting that the bottom lid of the hopper bottom is opened, and the hopper empty detection means for detecting that the empty can in the hopper has become empty are provided respectively, and the hopper open detection is performed. When the hopper empty detection means is not detected after the means is detected, the hopper opening / closing control means is provided which operates the bottom lid in the closing direction and then opens it again.

[0006]

When the empty can in the hopper reaches the specified amount, the bottom lid at the bottom of the hopper is opened, and the hopper opening detecting means detects that the hopper is opened. Then, the empty cans in the hopper try to be guided to the press machine, but when some of the empty cans are guided to the press machine, if most of the empty cans stay in the vicinity of the bottom of the hopper due to a bridge phenomenon. Since the hopper is not emptied after the hopper open detection means is detected, the hopper empty detection means is not detected, and the hopper opening / closing control means operates the bottom lid in the closing direction to cause a bridge phenomenon. Is moved upwards or the empty can is impacted to break the bridge phenomenon, the bottom lid is opened again to open the hopper, and the remaining empty can is guided to the press machine.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. Reference numeral 1 denotes a belt conveyor that is curved in a substantially arc shape, and a reservoir 2 such as an empty can is attached to a lower portion of the belt conveyor 1, and an empty can or the like placed in the reservoir 2 has a protruding piece 3 of the belt conveyor 1. --- --- is hooked by and transported upward.

A sorting machine 4 is built in the front end of the belt conveyor 1, and among the empty cans conveyed by the belt conveyor 1, a non-magnetic aluminum can 5 is a belt conveyor due to the induction electromagnetic force of the sorting machine 4. 1, and is stored in an aluminum can hopper 8 provided in front of and above the press 7 at the front of the gantry 6. The magnetic steel cans 9 wrap around below the belt conveyor 1 by the induction electromagnetic force of the sorter 4, and are stored in a hopper 10 for steel cans provided above the press 7 at the rear of the pedestal 6.

The empty bottle 11 and the paper cup 12 drop downward from the front end of the belt conveyor 1 as they are, and the empty bottle 11 falls as they are and rolls a guide 13 provided at the center of the pedestal 6 to roll an unillustrated empty bottle recovery cart. Will be collected. The paper cup 12 is blown by the air of the air nozzle 14 and is collected in a paper cup collection bucket (not shown) on the side opposite to the empty bottle 11. The aluminum hopper 8 is provided at its lower portion with a bottom lid 16 which is vertically rotatable by an aluminum can hydraulic cylinder 15. Hopper for the steel can 1
0 is provided with a bottom lid 18 which is vertically rotatable by a hydraulic cylinder 17 for steel cans at the bottom. Photoelectric sensors 19 and 20 including known light emitters and light receivers are attached above the left and right walls of the hoppers 8 and 10 to detect when the cans 5 and 9 reach a specified amount. .

Below the left and right walls of the hoppers 8 and 10, photoelectric sensors 21 and 22 composed of known light emitters and light receivers, which are hopper empty detection means, are attached. It is detected that each can 5, 9 is empty. The press machine 7 receives an empty can from above, and a press chamber 24 for discharging the pressed press product 23 from the front part.
A press lid 26 that is vertically rotatable by a hydraulic cylinder 25 above the rear of the press chamber 24;
A hydraulic cylinder 27 is provided at the rear portion of the press member 24 so as to be slidable back and forth in the press chamber 24, and a discharge gate 29 is vertically slidable at the front portion of the press chamber 24.

In the aluminum can hydraulic cylinder 15, the bottom cover 16 is pivoted downward to open the aluminum can hopper 8 when the cylinder 15 is fully contracted, and a cylinder switch 30 for detecting the opening of the hopper is provided. The bottom lid 16 is rotated upward to close the aluminum can hopper 8, and a cylinder switch 31 for detecting the closure of the hopper is provided.
Constitutes the hopper open detection means for aluminum cans.

In the steel can hydraulic cylinder 17, when the cylinder 17 is fully extended, the bottom lid 18 is pivoted downward to open the steel can hopper 10 to open the hopper 10. The lid 18 is rotated upward to close the steel can hopper 10, and a cylinder switch 33 for detecting the closure of the hopper is provided. The cylinder switch 32 constitutes a steel can hopper open detection means. As shown in FIG. 11, each of the cylinder switches 30, 31, 32 and 33 is of a known type and comprises a magnet 35 attached to the piston 34 and a sensing portion 37 attached to the barrel 36, and the magnet 35 reaches the sensing portion 37. Then it is detected. 38 and 38 are side plates provided on the left and right between the hoppers 8 and 10 and the press 7.

Next, FIG. 10 shows a hydraulic cylinder 15 for an aluminum can.
In this hydraulic circuit, a three-position switching valve 40 is interposed in this circuit 39. In this switching valve 40, when the right solenoid 41 is excited, the cylinder 15 contracts, and the bottom lid 16 rotates downwards, causing the aluminum to move. When the can hopper 8 is opened and the left solenoid 42 is excited, the cylinder 15 extends and the bottom lid 16 rotates upward to close the aluminum can hopper 8.

Next, FIG. 9 is a block diagram showing each cylinder switch 3 of each hopper 8 and 10 which is each hopper opening detecting means.
After 0 and 32 are detected, if the photoelectric sensors 21 and 22 which are hopper empty detection means are still shielded from light even when the set time is elapsed by the timer 43, the hopper opening / closing control means 44 excites the solenoid 42. After that, the solenoid 41 is excited. The hopper opening / closing control means 44 is built in the microcomputer. Note that FIG. 8 is a block diagram.

The operation of the present invention having the above construction will be described below. In FIGS. 1, 2, and 8, an empty can or the like is put into the reservoir 2. The sorting machine 4 and the belt conveyor 1 are operated (S1). Then, the empty can or the like is hooked on the protruding piece 3 --- --- of the belt conveyor 1 and conveyed upward. Among the empty cans, etc. conveyed to the front end of the belt conveyor 1, the non-magnetic aluminum can 5 is blown to the front of the belt conveyor 1 by the induction electromagnetic force of the sorter 4, and the front of the pedestal 6 and the upper front of the press 7 It is stored in the hopper 8 for aluminum cans. Of empty cans,
The magnetic steel cans 9 wrap around below the belt conveyor 1 by the induction electromagnetic force of the sorter 4, and are stored in the hopper 10 for steel cans above the press 7 at the rear of the pedestal 6.

Among the empty cans, the empty bottle 11 and the paper cup 12 fall downward from the front end of the belt conveyor 1 by their own weight, and the empty bottle 11 rolls on the guide 13 at the center of the pedestal 6 to collect the empty bottle. (Not shown). Then, the paper cup 12 is blown by the air of the air nozzle 14 and collected in a paper cup collection bucket (not shown) on the side opposite to the empty bottle 11. Next, referring also to FIG. 3 and FIG. 9, one of the empty cans reaches a specified amount and the photoelectric sensor 21 is detected (S
2) and which hopper 8 is selected (S3).

For example, if the aluminum can 5 reaches a specified amount, the aluminum can cylinder 15 is contracted and the bottom cover 16 is opened, and when the aluminum can 5 is fully contracted, the magnet 35 of the cylinder switch 30 causes the sensing portion to move as shown in FIG. At 37, the opening of the aluminum can hopper (S4) is detected and the aluminum can 5 is loaded into the press chamber 24 of the press 7. At this time, since the space between the bottom of the aluminum can hopper 8 and the bottom lid 16 through which the aluminum can 5 passes is narrow, a part of the aluminum can 5 is partially pressed by the press chamber 2.
Most of the aluminum can 5 stays in the bridge 4 between the bottom of the hopper 8 for the aluminum can and the bottom lid 16 while being guided to the position 4.

Then, the photoelectric sensor 21 is not detected even if the timer 43 measures for 3 seconds, so that the solenoid 42 of FIG. 10 is excited by the hopper opening / closing control means 44 to move the 3-position switching valve 40 to the left position, and the aluminum can cylinder 15 Is extended and the bottom lid 16 is rotated upward to close the hopper (S
In 6), the aluminum can 5, which is causing the bridging phenomenon, is moved upward to break the bridging phenomenon. After that, the solenoid 41 is excited, the three-position switching valve 40 is moved to the right position, the aluminum can cylinder 15 is contracted, the bottom lid 16 is rotated downward, and when the hopper is opened (S4), it stays as shown in FIG. The aluminum can 5 that had been used is guided to the press chamber 24 and the hopper becomes empty (S5).

Next, the bottom cover 16 is rotated upward to close the hopper (S7), and the press cover 26 is rotated downward by the hydraulic cylinder 25 as shown in FIG. It is pressed (S8). After that, when the hydraulic cylinder 27 is extended as shown in FIG.
Slides forward and secondarily presses the aluminum can 5 (S
9).

Next, as shown in FIG. 7, after raising the discharge gate 29, the hydraulic cylinder 27 is fully extended and the block-shaped pressed product 23 is taken out from the press machine 7 by the pressing member 28 (S10). After that, the discharge gate 29 is lowered, and if the pressing work is to be ended (S11), the belt conveyor 1 and the sorting machine 4 are stopped (S12). By the way, in this embodiment, the bridge phenomenon is caused by the hopper 8 for the aluminum can.
Although it is arranged to be placed in a narrowed space between the bottom portion and the bottom lid 16, when the bridge phenomenon occurs inside the aluminum can hopper 8, the bottom lid 16 is closed and applied to the bottom portion of the hopper 8. 5 may be given a shock to break the bridge phenomenon.

[0021]

As described above, according to the present invention, when the empty can causes the bridge phenomenon and stays in the vicinity of the bottom of the hopper, the hopper open detecting means is not detected after the hopper open detecting means is detected. By operating the bottom lid of the hopper in the closing direction to move the empty can up, or by giving a shock to break the bridge phenomenon and opening the bottom lid again, all empty cans are guided to the press machine. .

[Brief description of drawings]

FIG. 1 is a perspective view of an entire empty can processing device of the present invention.

FIG. 2 is a diagram showing a schematic state of an empty can processing device.

FIG. 3 is a diagram showing a state in which an empty can causes a bridge phenomenon.

FIG. 4 is a diagram showing a state in which all empty cans are put into a press machine.

FIG. 5 is a view in which an empty can is primarily pressed.

FIG. 6 is a view in which an empty can is secondarily pressed.

FIG. 7 is a diagram showing a pressed product taken out of the press machine.

FIG. 8 is a flow chart diagram.

FIG. 9 is a block diagram.

FIG. 10 is a hydraulic circuit diagram of a cylinder that operates a bottom lid.

FIG. 11 is a cross-sectional view showing a cylinder switch.

[Explanation of symbols]

 5 Aluminum can 7 Press machine 8 Aluminum can hopper 16 Bottom lid 21 Photoelectric sensor (hopper empty detection means) 30 Cylinder switch (hopper open detection means) 44 Hopper open / close control means

Claims (1)

[Claims] 1. An empty can processing apparatus in which a bottom cover at the bottom of a hopper is opened and an empty can in the hopper is guided to a pressing machine to perform a block-shaped press treatment, wherein the bottom cover at the bottom of the hopper is opened. A hopper open detecting means for detecting and a hopper empty detecting means for detecting that the empty can in the hopper has become empty are provided respectively, and after the hopper open detecting means is detected, the hopper empty detecting means is not detected. Then, the empty can processing device is provided with a hopper opening / closing control means that is opened again after the bottom cover is operated in the closing direction.