JPS6147782B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cargo handling device for reloading articles such as spools or assembled parts of machines and electrical devices.

Generally, a thread roll of cheese, paan, etc. wound up in a winding machine is extracted from the bobbin holder of the winding machine, attached to a peg protruding from a trolley, and transported to an inspection line, etc. The spools placed on the trolley are transferred to the pallets placed on the conveyor of the inspection line. Furthermore, after predetermined work on assembled parts of machines and electrical devices is completed on the conveyor of one assembly line, they are transferred to the conveyor of the next assembly line using a cargo handling device.

The cargo handling device for reloading the above-mentioned spool bodies or assembled parts has a structure as shown in FIGS. 1 and 2.

In the figure, 1 is a first cylinder mounted horizontally on a machine frame (not shown), and 2 is a second cylinder mounted vertically on a machine frame (not shown). The piston rod of the first cylinder 1 is connected to the second cylinder 2, and is rotated when the piston rod moves in and out. Further, a chuck mechanism is attached to the piston rod of the second cylinder 2. A pump 4 supplies pressure fluid to each cylinder via a supply pipe 5. 6 is a 4-port 3-position switching solenoid valve that switches the pressure fluid supply path;
It is connected to the first cylinder 1 via a pilot check valve 7 and a variable throttle valve 8. Reference numeral 9 denotes a 4-port 3-position switching solenoid valve for switching the pressure fluid supply path, and is connected to the second cylinder 2 via a pilot check valve 10 and a variable throttle valve 11.

When using the above-mentioned cargo handling device A to transfer the bobbin P attached to the pegs of the trolley B to the pallet D placed on the conveyor C, the 4-port 3-position switching solenoid valves 6 and 9 are activated. Turn on the switches one after another,
Turn off the first cylinder 1 and the second cylinder.
Pressure fluid is supplied to the cylinder 2 to move the piston rod in and out, and the chuck mechanism 3 grips the bobbin P for reloading.

The operation of each cylinder during the reloading operation of the bobbins is carried out by switching the pressure fluid supply path, so the pallet placed on the conveyor C may not be set correctly at the reloading position, or may have already been Even when the spool is attached to the pallet, there is a problem in that the spool is forcibly lowered, damaging the spool or the chuck mechanism.

The present invention was obtained as a result of studies aimed at solving the above-mentioned problems.

That is, the present invention attaches a chuck mechanism to the piston rod of a fluid cylinder, connects a pressure fluid supply pipe having a supply path switching valve to the cylinder, and switches the supply path of pressure fluid to the cylinder. In an apparatus for moving a chuck mechanism to transfer articles from a supply section to a receiving section, the piston rod is installed in the pressure fluid supply pipe in the receiving section in a cylinder such that the piston rod is moved downward by the weight of the piston rod, the chuck mechanism, and the articles. A cargo handling device is provided which is provided with an auxiliary conduit for discharging the supplied pressure fluid.

The configuration of the cargo handling device of the present invention will be explained based on the drawings.

21 is a pump for supplying pressure fluid, and 22 is a main pipe for supplying pressure fluid. Reference numeral 23 denotes a first cylinder mounted substantially horizontally on the machine frame (not shown), and 24 indicates a second cylinder mounted substantially vertically on the machine frame (not shown). At the end of the second cylinder 24, a first cylinder 23 is provided.
A piston rod is connected, and by moving the piston rod in and out, it aligns with the axis of the peg protruding from the cart B or the axis of the peg of the pallet D placed on the conveyor C. It is designed to be rotated. Further, the piston rod of the second cylinder 24 is filled with pressure fluid,
Alternatively, a chuck mechanism 25 is installed in which the gripping claws are opened and closed by electromagnetic force or the like. 26 is a 4-port 3-position switching solenoid valve connected to the first cylinder 23 via a check valve 27 with a pilot, a check valve 28 with a variable throttle, and branch pipes 35 and 36 for supplying pressure fluid; The supply path of the pressure fluid to the working chambers a and b is changed. 2
9 is a 4-port 3-position switching solenoid valve connected to the second cylinder 24 via a check valve 30 with a pilot, a check valve 31 with a variable throttle, and branch pipes 37 and 38 for supplying pressure fluid; working chamber c,
The pressure fluid supply path to d is changed. 32 is a 4-port 2 connected to a pressure fluid supply branch pipe 38 via a pilot-equipped check valve 33, a variable throttle valve 34, and a pressure fluid discharge pipe 39.
This is a position switching solenoid valve, and the piston rod of the second cylinder 24 is controlled by the solenoid valve 32, the pilot check valve 33, the variable throttle valve 34, and the pressure fluid discharge pipe 39. An auxiliary conduit is formed in which the pressurized fluid supplied to the working chamber d is released so as to protrude due to its own weight.

The above-mentioned second cylinder 24 can also be connected to the first cylinder or a reversible rotary electric motor via a rack and pinion for rotation. In addition, the reloading operation of the bobbins is carried out by detecting each operation with a limit switch or other detector and switching the solenoid valves in sequence, or by setting the order of operations in advance and switching the solenoid valves etc. in sequence using a timer. .

Regarding the operation of transferring the bobbins P attached to the pegs of the trolley B as shown in FIG. explain.

First, the pump 21 is operated to send fluid at a predetermined pressure to each of the switching solenoid valves 26, 29, and 32 through the main pressure fluid supply pipe 22.

At this time, switches SL-1 and SL-2 of the 4-port 3-position switching solenoid valve 26 and switches SL-3 and SL-4 of the 4-port 3-position switching solenoid valve 29 are in the OFF state, and the 4-port switching solenoid valve 26 is in the OFF state. 2 position switching solenoid valve 3
Switches SL-5 and SL-6 of No. 2 are in the ON state. In this state, when it is detected that the cart B loaded with the bobbin body P is conveyed to the reloading position of the conveyor C, the 4-port 3-position switching solenoid valve 2
Switch SL-1 of No. 6 is turned on, and pressurized fluid is supplied to the working chamber a of the first cylinder 26. Then, the piston rod protrudes and the chuck mechanism 25 together with the second cylinder 24 is rotated so as to coincide with the axis of the bobbin body P mounted on the truck B (Fig. 4-2). When it is confirmed that the chuck mechanism 25 is tilted at a predetermined angle, the switch SL-1 of the 4-port 3-position switching solenoid valve 26 is activated.
It is in the OFF state and the piston rod is held in an extended state. Simultaneously with the switching operation of the switch SL-1, the switch SL-3 of the 4-port 3-position switching solenoid valve 29 is turned on, and pressurized fluid is supplied to the working chamber c of the second cylinder 24. Then, the piston rod protrudes and the chuck mechanism 2
5 is moved to the position of the bobbin body P attached to the trolley B (Fig. 4-3). At this time, the chuck mechanism 25 is activated and the gripping claws are opened so that they can grip the bobbin body P. When the chuck mechanism 25 moves to a predetermined position, the chuck mechanism 25 is activated and the bobbin body P is gripped. Then, the switch SL-4 of the 4-port 3-position solenoid valve 29 turns ON.
In this state, pressure fluid is supplied to the working chamber d of the second cylinder 24. Then, the piston rod is retracted and the bobbin body P is pulled out from the peg of the truck B (Figure 4-4). When it is confirmed that the bobbin body P has moved to the predetermined position, the switch SL-4 of the 4-port 3-position switching solenoid valve 29 is turned OFF, the supply of pressure fluid to the working chamber d is stopped, and the piston rod is is maintained in the retracted state. 4 simultaneously with the switching operation of the switch SL-4.
Port 3 position switching solenoid valve 26 switch SL-2
is turned on, and pressure fluid is supplied to the working chamber b of the first cylinder 23. Then, the piston rod is retracted and the chuck mechanism 25 together with the second cylinder 24 is rotated from the inclined state to the vertical state (Figs. 4-5). And the thread body P
When the axis of the pallet D on the conveyor C matches the axis of the peg of the pallet D, the 4-port 3-position switching solenoid valve 26
switch SL-2 is turned OFF, the supply of pressure fluid to the working chamber b is stopped, and the piston rod is maintained in the retracted state. the switch
Simultaneously with the switching operation of SL-2, the switch SL-5 of the 4-port 2-position switching solenoid valve 32 is turned on, pressure fluid is sent to the check valve with pilot 33, and the pilot operates to close the check valve. 33 is opened. Therefore, the second cylinder 24 is
The working chamber d and the 4-port 2-position switching solenoid valve 32 are communicated with each other. Then, the bobbin body P, the chuck mechanism 2
5 and the piston rod, etc., the piston rod protrudes and the bobbin body P is lowered onto the pallet C. At this time, as the piston rod moves, the pressure fluid that has been supplied into the working chamber d of the second cylinder 24 is transferred to the discharge pipe 39 and the 4 port 2.
It is released via the position switching solenoid valve 32. (4th
-Figure 6). When the bobbin body P is attached to the peg of the pallet C by this operation, the chuck mechanism 25 is activated to release the grip on the bobbin body P, and simultaneously with this operation, the switch SL- of the 4-port 2-position switching solenoid valve 32 is turned on.
5 is in the OFF state, and check valve 3 with pilot
The supply of pressure fluid to the check valve 33 is stopped, the pilot is activated, and the check valve 33 is closed. Therefore, the working chamber d of the second cylinder 24 and the 4 port 2
Communication of the position switching solenoid valve 32 is cut off. Then, the switch of the 4-port 3-position solenoid valve 29
SL-4 is turned on, and pressure fluid is supplied to the working chamber d of the second cylinder 24. Then, the piston rod is retracted and the chuck mechanism 25 is returned to the standby position (Fig. 4-1), and the reloading operation of the bobbin body P is completed.

While repeating the above-mentioned operation, the cart B is raised by the vertical interval of the pegs protruding from the cart,
Or, it is lowered and the bobbin body attached to the peg is reloaded.

As described above, the present invention attaches a chuck mechanism to the piston rod of a fluid cylinder, connects a pressure fluid supply pipe having a supply path switching valve to the cylinder, and switches the supply path of pressure fluid to the cylinder. In a device for transferring articles from a supply section to a receiving section by moving a chuck mechanism together with the piston rod, the piston rod is inserted into the pressure fluid supply pipe in the receiving section so as to be moved downward by the weight of the piston rod, the chuck mechanism, and the articles. By providing an auxiliary conduit for discharging the pressure fluid supplied to the fluid cylinder, the piston rod of the fluid cylinder is forcibly moved by supplying pressure fluid in the supply section, and the pressure fluid is discharged in the receiving section. Instead, the pressure fluid already supplied in the fluid cylinder is released through the auxiliary pipe line due to the weight of the piston rod, chuck mechanism, and articles, etc., and is moved downward. If the pallet placed on the conveyor is misaligned or there are other items already on the conveyor, the item gripped by the chuck mechanism will descend and hit the pallet or other item. When it makes contact, it does not descend any further and stops at that position, which prevents damage to articles, conveyors, cargo handling equipment, etc.

[Brief explanation of the drawing]

FIG. 1 is a schematic front view showing one embodiment of a reloading section for bobbins. Figure 2 shows one example of conventional cargo handling equipment.
It is a schematic diagram showing an example. FIG. 3 is a schematic diagram showing one embodiment of the cargo handling device of the present invention, and FIG. 4 is a schematic diagram showing its operation. 21: Pump, 22: Main pipe for pressure fluid supply, 2
3: 1st cylinder, 24: 2nd cylinder, 2
5: Check mechanism, 26, 29: 4-port 3-position switching solenoid valve, 27, 30, 33: Check valve with pilot, 28, 31: Check valve with throttle valve, 32: 4-port 2-position switching solenoid valve, 34: Variable throttle valve, 3
5, 36, 37, 38: Pressure fluid supply branch pipe, 3
9: Pressure fluid discharge pipe.

Claims (1)

[Claims] 1 Attach a chuck mechanism to the piston rod of a fluid cylinder, connect a pressure fluid supply pipe having a supply path switching valve to the cylinder, and move the chuck mechanism together with the piston rod by switching the pressure fluid supply path to the cylinder. In an apparatus for transferring articles from a supply section to a receiving section, pressure is supplied to the pressure fluid supply pipe in a cylinder such that the piston rod is moved downward in the receiving section by the piston rod, the chuck mechanism, and the weight of the article. A cargo handling device characterized by being provided with an auxiliary conduit for discharging fluid.