JPH07204899A - Empty can processing device - Google Patents

Abstract

PURPOSE:To shorten the time to melt the total pressing product by press- processing in a high pressure when a steel can is detected with a detecting means, and press-processing in a low pressure when an aluminum can is detected. CONSTITUTION:Steel can detecting means 30, 31 detect introducing of a steel can inside a hopper into a press machine. Aluminum can detecting means 28, 29 detect introducing of an aluminum can into the press machine. A pressure controlling means 45 has a high pressure changing means 44 and a low pressure changing means 43. When the steel can detecting means 30, 31 detect, the high pressure changing means 44 operates a high pressure switch 42 and a solenoid 40 and the steel can is press-processed in the high pressure. When the aluminum can detecting means 28, 29 detect, the low pressure changing means 43 operates a low pressure switch 41 and the solenoid 40 and the aluminum can is press- processed in the low pressure. Therefore, when the aluminum is taken out by melting in the furnace, the aluminum solution can easily enter in the pressing product.

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 pressing steel cans at high pressure and aluminum cans at low pressure when pressing empty cans with a press.

[0002]

2. Description of the Related Art Conventionally, when an empty can is pressed by a pressing machine, an aluminum can is also pressed at a high pressure like a steel can and taken out from the pressing machine as a dense block-shaped pressed product.

[0003]

Therefore, the pressed product of the aluminum can is melted in the gas reflection furnace to take out aluminum. However, since the density of the pressed product is high, the aluminum solution in the gas reflection furnace is not a pressed product. There was a problem that it did not easily penetrate and it took time for the entire pressed product to melt. Therefore, it is an object of the present invention to melt a pressed product of an aluminum can in a gas reverberation furnace and take out aluminum so that it does not take much time for the entire pressed product to melt.

[0004]

In order to achieve the above object, the present invention selects empty cans into steel cans and aluminum cans, stores them in each hopper, and guides the empty cans of each hopper to a press machine. In an empty can processing device adapted to press-process in a block shape, a steel can detecting means for detecting that the steel can is guided to a pressing machine, and an aluminum can detection for detecting that the aluminum can is guided to the pressing machine. Means are provided, and when the steel can detecting means is detected, the high pressure pressure converting means presses the steel can at high pressure, and when the aluminum can detecting means is detected, the low pressure pressure converting means detects the aluminum can. It is characterized in that a pressure control means for performing press processing at a low pressure is provided.

[0005]

[Function] Empty cans are sorted into steel cans and aluminum cans, steel cans are stored in a hopper for steel cans, and aluminum cans are stored in a hopper for aluminum cans. For example, when the hopper for steel cans reaches a specified amount, the hoppers for steel cans are opened, the steel cans are loaded into the press machine, the steel can detecting means is detected, and the press pressure is increased by the high pressure converting means of the pressure control means. And is pressed with a press machine at high pressure to form a dense block.

Thereafter, the block product having a high density is discharged from the press machine. Next, when the aluminum can hopper reaches the specified amount, the aluminum can hopper is opened and the aluminum can is loaded into the press machine.The aluminum can detection means is detected and the press pressure is reduced by the low pressure conversion means of the pressure control means. And is pressed into a dense block at a low pressure with a pressing machine.

Thereafter, the dense block-shaped pressed product is discharged from the pressing machine.

[0008]

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. It is caught 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 by 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 fall 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 frame 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 to the left and right walls of the hoppers 8 and 10, respectively, and detect when the cans 5 and 9 reach a specified amount. The press machine 7 receives an empty can from above and discharges a pressed press product 21 from the front part, and a press lid 24 that is vertically rotatable by a hydraulic cylinder 23 above the rear part of the press chamber 22. A pressurizing member 26, which is slidable back and forth in the press chamber 22 by a hydraulic cylinder 25, and a discharge gate 27, which is slidable vertically in the front part of the press chamber 22, are formed at the rear of the press chamber 22. This aluminum cylinder hydraulic cylinder 15 has the cylinder 15
Cylinder switch 28 for detecting the opening of the hopper by rotating the bottom lid 16 downward to open the hopper 8 for the aluminum can at the time of the most reduction.
Then, at the time of maximum extension, the bottom cover 16 is rotated upward to close the aluminum can hopper 8, and the cylinder switch 2 for detecting the closure of the hopper.
9 are provided, and these cylinder switches 28, 29 are provided.
This constitutes an aluminum can detecting means.

In the steel can hydraulic cylinder 17, the bottom cover 18 is rotated downward when the cylinder 17 is fully extended to open the hopper 10 for the steel can, and a cylinder switch 30 for detecting the opening of the hopper, and a bottom when the contraction is minimized. A cylinder switch 31 for detecting the closing of the hopper is provided by rotating the lid 18 upward to close the hopper 10 for the steel can, and these cylinder switches 30 and 31 constitute a steel can detecting means. The cylinder switches 28, 29, 30,
As shown in FIG. 10, reference numeral 31 is a known one, which is composed of a magnet 33 attached to the piston 32 and a sensing portion 35 attached to the barrel 34, and is detected when the magnet 33 reaches the sensing portion 35. Reference numerals 36 and 36 denote side plates provided on the left and right sides between the hoppers 8 and 10 and the press machine 7.

Next, FIG. 9 shows a hydraulic circuit of the hydraulic cylinder 25 of the pressurizing member 26 of the press 7. A three-position switching valve 38 is provided in the circuit 37. The switching valve 38 has a left solenoid 39. When excited, the cylinder 25 expands to press the empty can inside the press chamber 22, and when the right solenoid 40 is excited, the cylinder 25 contracts. Four
Reference numerals 1 and 42 denote a low pressure pressure switch and a high pressure pressure switch interposed in a circuit 37 for extending the cylinder 25. The solenoid 40 is excited when these pressure switches 41 and 42 operate.

Next, FIG. 8 is a block diagram. When both the cylinder switches 28 and 29 of the aluminum can hopper 8 are detected, the low pressure converting means 43 sets the low pressure pressure switch 41 to a set value (70 Kgf / cm ^2). ) Is reached, the solenoid 40 is excited, and when the cylinder switches 30 and 31 of the steel can hopper 10 are both detected, the high pressure converting means 44 ignores even if the low pressure pressure switch 41 reaches a set value and operates. The high pressure switch 4
When 2 reaches the set value (180 Kgf / cm ² ), the solenoid 40 is excited. The pressure control means 4 comprises the low pressure conversion means 43 and the high pressure conversion means 44.
5, the pressure control means 45 is built in the microcomputer. Note that FIG. 7 is a block diagram.

By the way, in this embodiment, the cylinder switch 2
The low pressure converting means 43 is activated when both 8 and 29 are detected, but it may be activated when either cylinder switch 28 or 29 is detected, and the cylinder switches 30 and 31 are activated. The high pressure converting means 44 operates when both are detected, but may operate when either cylinder switch 30 or 31 is detected. Further, the aluminum can detecting means and the steel can detecting means are connected to the cylinder switches 28, 29, 30, 3 respectively.
However, the photoelectric sensors 19 and 20 may be used.

The operation of the present invention having the above construction will be described below. In FIGS. 1, 2, and 7, an empty can or the like is put into the reservoir 2. The sorting machine 4 and the belt conveyor 1 are operated (S ₁ ). Then, the empty can or the like is hooked by the protruding pieces 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. Among the empty cans, the magnetic steel cans 9 wrap around below the belt conveyor 1 by the induction electromagnetic force of the sorting machine 4, and are stored in the hopper 10 for steel cans above the pressing machine 7 at the rear of the gantry 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 FIGS. 3 and 8, when the aluminum can 5 stored in the aluminum hopper 8 reaches a specified amount and the photoelectric sensor 19 is detected (S ₂ ), the aluminum can cylinder. When 15 is contracted and the bottom lid 16 is opened and contracted to the maximum,
As shown in FIG. 10, the magnet 33 of the cylinder switch 28 reaches the sensing portion 35 to open the aluminum can hopper (S ₃ ).
Is detected and the aluminum can 5 is put into the press chamber 22 of the press 7. After that, the cylinder 15 expands, and when the cylinder 15 expands the most, the cylinder switch 29 detects that the aluminum can hopper is closed (S ₄ ).
The signals of 8 and 29 are input to the low pressure conversion means 43 of the pressure control means 45.

Next, as shown in FIG. 4, the hydraulic cylinder 23
Thus, when the press lid 24 is rotated downward, the aluminum can 5 in the press chamber 22 is primarily pressed (S ₅ ). After that, FIG.
To excite the solenoid 39 3 pressure member 26 by the hydraulic cylinder 25 when the position switching valve 38 to the left position to the secondary press aluminum cans 5 slides forward (S _6).
When the operating pressure reaches 70 Kgf / cm ² during the secondary pressing, the low pressure converting means 43 activates the low pressure pressure switch 41 (S ₇ ), energizing the solenoid 40 to switch the three-position switching valve 38 to the right position. , The hydraulic cylinder 25 is slightly retracted.

Next, as shown in FIG. 6, after raising the discharge gate 27, the hydraulic cylinder 25 is extended to the maximum extent, and the thin block-shaped pressed product 21 pressed by the pressurizing member 26 at a low pressure is pressed. Take out from 7 (S ₈ ). Next, the steel cans 9 stored in the hopper 10 for steel cans
Reaches a specified amount and the photoelectric sensor 20 is detected (S ₉ ), the steel can cylinder 17 extends and the bottom lid 18 is opened. When the steel can cylinder is fully extended, the cylinder switch 30 opens the steel can hopper (S). ₁₀ ) is detected and the steel can 9 is put into the press chamber 22 of the press 7. After that, the cylinder 17 is contracted, and when it is contracted to the maximum, the cylinder switch 31 closes the hopper for the steel can (S ₁₁ ).
Is detected, and the signals of the cylinder switches 30 and 31 are input to the high pressure converting means 44.

Next, as shown in FIG.
Next is pressed (S ₅ ). After that, the steel can 9 is secondarily pressed as shown in FIG. 5 (S ₆ ). Even if the working pressure reaches 70 Kgf / cm ² during the secondary press, the function of the low pressure pressure switch 41 is ignored by the high pressure converting means 44, and when the working pressure reaches 180 Kgf / cm ² , the high pressure pressure switch 42 works. Te (S _12), switches the 3-position switching valve 38 by exciting the solenoid 40 to the right position, the hydraulic cylinder 25 is slightly retracted.

Next, after raising the discharge gate 27, the hydraulic cylinder 25 is extended to the maximum extent and the dense block-shaped pressed product 21 pressed by the pressurizing member 26 at high pressure is taken out from the press machine 7 (S ₈ ). After that, the discharge gate 2
If 7 is lowered and the pressing work is to be finished (S ₁₃ ), the belt conveyor 1 and the sorting machine 4 are stopped (S ₁₄ ).

[0022]

As described above, according to the present invention, when an aluminum can is pressed by a press machine at a low pressure to obtain a block-shaped thin press product, the aluminum press product is melted in a furnace to take out aluminum. At this time, since the aluminum solution easily enters the pressed product, it does not take too much time to melt the entire pressed product.

[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 an abbreviated state of an empty can processing device.

FIG. 3 is a view showing a state where an aluminum can is put into a press machine.

FIG. 4 is a view in which an empty can is first pressed.

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

FIG. 6 is a view showing a pressed press product taken out from a press machine.

FIG. 7 is a flow chart diagram.

FIG. 8 is a block diagram.

FIG. 9 is a hydraulic circuit diagram of a hydraulic cylinder that operates a pressurizing member.

FIG. 10 is a sectional view showing a cylinder switch.

[Explanation of symbols]

5 Aluminum can 7 Press machine 8 Aluminum can hopper 9 Steel can 10 Steel can hopper 28,29 Cylinder switch (aluminum can detecting means) 30,31 Cylinder switch (steel can detecting means) 43 Low pressure converting means 44 High pressure converting Means 45 Pressure control means

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location B03C 1/30 Z B65F 5/00

Claims (1)

[Claims] 1. An empty can processing device in which empty cans are sorted into steel cans and aluminum cans and stored in each hopper, and the empty cans of each hopper are guided to a press machine to be pressed into blocks. , A steel can detecting means for detecting that the steel can is guided to the press machine, and an aluminum can detecting means for detecting that the aluminum can is guided to the press machine are respectively provided, and the steel can detecting means detects When the aluminum can detecting means detects the aluminum can at a high pressure, the low pressure pressure converting means presses the aluminum can at a low pressure. Can processing equipment.