JPS58931B2 - How to autoload plate material to punch press machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION A sheet material automatic system that suctions and holds sheets stacked in a storage area with a suction cup and supplies the sheets one sheet at a time to a punch press machine each time a sheet material request command is received from a punch press machine. There is a loading method.

The present invention relates to a new method for moving a suction cup in order to solve various problems related to an autoloading device and its operation in such a plate autoloading method, and to further improve the operating efficiency of a punch press machine.

The present invention will be explained in detail below with reference to the drawings.

First, the schematic structure of the autoloading device will be explained with reference to FIG.

Reference numeral 1 denotes a board storage location, which is configured as a board mounting table.

The plate materials W are stacked and placed on the mounting table 1.

3 is a trolley that is suspended from the rail 2 and runs along the rail 2 between the storage area 1 and the punch press machine 4; 5 is a cylinder that is supported perpendicularly to the trolley 3; and a lift plate is provided at the lower end of the piston rod 6 of the cylinder 5. 7 is supported.

Reference numeral 8 denotes a guide rod for vertically moving the elevating plate 7 up and down with respect to the trolley 3.

Reference numeral 10 denotes a downwardly open plate suction cup supported on the elevating plate 7 so as to be able to move up and down slightly by means of a spring.

11 is a plate material mounting table TU of the punch press machine 4, and an upper tool turret TD is an upper tool turret.

Ml and M2 are limit switches fixed to rail 2,
When the dog 9 fixed on the trolley 3 kicks the switch M1, the trolley 3 stops at the board gripping position of the storage location 1, and when the dog 9 kicks the switch M2, the trolley 3 moves to the board gripping position of the punch press machine 4. Stop.

In such an autoloading device, the conventional movement of the suction cup 10, that is, the elevating plate 7, was as shown by the arrow in FIG.

That is, when a plate material request command is issued from the punch press machine 4, the suction cup that comes into contact with the upper surface of the plate materials W stacked and placed in the storage location 1 and holds the topmost plate material W1 by suction moves up to the upper limit level X. .

The upper limit level corresponds to the table level of the punch press machine 4.

Next, at the height position of the table level, the suction cup 1
0 moves horizontally Y from the storage location 1 to the punch press machine, and after the plate material W1 is gripped by the work holder that grips and moves the plate material provided on the table 11 and punches it in the appropriate position, the suction is released, and then the same table 11 At the level height position, the punch press machine 4 moves backward Z to the storage location 1, and when the suction cup 10 thus reaches the storage location 1, the punch press machine performs the pressing operation.

During the above operation, the suction cup 10 moves Y and Z at the table level height position because the plate material held by the suction cup 10 is inserted into the gap between the upper turret TU and the lower turret TD at the table level height position. This is because when the plate material is grabbed by the work holder of the punch press machine, a part of the plate material often enters the turret TU, TD, and the size of the plate material that can be processed by cutting This allows you to maximize the range of

However, when the suction cup 10 is at the table level, the moving member of the punch press machine that supports and moves the work holder is in the range where it comes into contact with the suction cup 10, so it moves back in the z direction and returns to suction as described above. The pressing operation starts when the disk moves out of the movement range of the moving member, that is, when the suction cup 10 returns to the storage location, and the time required for the Z movement is about 10 seconds. During this time, the press operation must be stopped unnecessarily.

The time required for one cycle of the autoloader is about 30 seconds.Since the minimum time required for pressing a punch press machine is 2 to 3 minutes, the above 10 seconds is a size that cannot be ignored in terms of operating efficiency of the autoloader and punch press machine.

Furthermore, since Y is limited to the table level, that is, the upper limit height of X is limited to the table level, the distance of X may become extremely short in the early stages of supplying boards when the boards are piled up high.

Since the plate material W is coated with anti-rust oil, adjacent plate materials are often in close contact with each other, and when the plate material W1 is lifted up by the suction cup as shown in X above, the second material from the top is W2 as shown in Figure 3. If the following plates are lifted up with the plate W1 and the distance X is short, the second and subsequent plates often cannot be separated from the plate W1.In such a case, if you move the shredder Y, the table 11 will be In some cases, two plates are supplied to the next punch press machine, or the positions of the second and lower plates at storage point 1 are misaligned, which may cause problems in feeding the next plate material to the next punch press machine. Various inconveniences occur, such as the following plate materials falling and causing unexpected accidents.

The present invention relates to a novel method for moving the suction cup 10 in order to eliminate the above-mentioned conventional drawbacks.

The movement method of the present invention is indicated by the arrows in FIG.

The solid arrow indicates the period during which the suction cup 10 holds the plate material by suction,
The dotted arrow indicates the period during which the adsorption is released.

Each time there is a plate material request command from the punch press machine, the steps (1) to (4) described below are performed continuously.

The upper limit level described below is such that the lower end of the suction cup 10 is higher than the upper end of the movable member of the punch press machine that supports the work holder and moves, that is, the suction cup 10 contacts the movable member even if the movable member moves. Table level means the height at which the plate material held by the suction cup is gripped by the work holder, that is, the height at which the plate material can be inserted between the upper turret TU and the lower turret TD. This means that there is a suction cup 10 at.

■ A process in which the suction cup 10 holding the plate material W1 in the storage location 1 by suction rises vertically to the upper limit level at the plate material gripping position of the storage location 1 - (arrow A) The process of vertically descending to the same height (arrow B) ■ The process of horizontally moving the suction cup 10 from the plate gripping position to the plate gripping position of the punch press machine at table level height (arrow C) ■ The plate material A process in which the work holder of the punch press machine grips the plate material held by the suction cup at the gripping position, and then the suction cup releases the plate material■ The suction cup that has released the plate material rises toward the upper limit level at the plate material gripping position. Process - (Arrow D) ■ Process in which the suction cup that has released the plate material moves and returns from the plate material gripping position of the punch press machine to the board material gripping position of the storage location - (arrow E) The process of vertically descending and contacting the plate material in storage location 1 to adsorb and hold the next plate material W2 - (arrow F) Among the above steps, steps ① and ② may be performed simultaneously, or during process 0, plate material W2 The adsorption and holding may be carried out before step (2), or the entire step (0) may be carried out before step (2).

That is, step (1)0 is not an essential requirement of the present invention.

1 for taking three different levels: the upper limit level of the suction cup 10, the table level, and the level for grasping the plate material of the storage location 1.
One means is to use a switching valve 12 schematically shown in FIG. 2 as the switching valve of the cylinder 5.

When the solenoid 5OL1 is energized, the valve portion 12a is energized, and when the solenoid 5OL2 is energized, the valve portion 12c is energized.
When both L1 and 5OL2 are de-energized, spring S1
．． S2 brings the valve part 12b into the actuated position.

P is a pump. M3. M4 is a limit switch fixed on the trolley 3 and turned on by being kicked by the lifting plate 7. When the solenoid 5OL1 is energized, that is, while the lifting plate 7 is rising, turning on the limit switch M4 does not perform any operation. When the solenoid 5OL2 is energized, that is, when the lifting plate 7 is lowering, the limit switch M4 is turned on, so that both 5OL1 and 5OL2 are de-energized, and the lifting plate 7 is turned on.
will stop at the table level.

The limit switch M3 is turned on by switching from excitation of 5OL1 to excitation of 5OL2 while moving in the direction of arrow A.
Immediately switch from rising A to falling B.

The means for moving the elevating plate described above is not the essence of the present invention and will only be described briefly.

The time required for the above process (■) is approximately 2 degrees at most, and the press operation of the punch press machine can be started immediately after the process (■) is completed.Compared to the conventional method where the press operation is started after the process (■) is completed, the time required to start the press operation is 10 degrees. You can speed it up by less than a second.

In addition, in the step (3), the plate material W1 held on the suction cup 10 is at least the distance of the arrow (usually 200 mm) from the next plate material W2.
When the plate material W2 is lifted by the above distance, the bending rigidity of the plate material W2 becomes the same as that of the plate material W1. The adhesion force between W2 is exceeded and the plate material WLW
2 are reliably separated.

In the present invention, the number of height levels of the suction cup is increased by one compared to the conventional method, but the above-mentioned two effects at arrows and D are generated due to the increase in the level, so that all the drawbacks of the conventional method are eliminated. I can do it.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram of the method of the present invention, FIG. 2 is an explanatory diagram of the structure of the switching valve of the cylinder 5, and FIG. 3 is an explanatory diagram of the conventional method. 1... Storage location, 3... Trolley, 4... Punch press machine, 7... Lifting plate, 10... Suction cup, A...
■Process, B...■Process, C...■Process, D...■
Process.

Claims (1)

[Scope of Claims] 1. Auto-loading of plate materials, which holds the plate materials stacked in a storage area by suction with a suction cup, and supplies the plate materials one by one to the punch press machine each time a plate material request command is received from the punch press machine. The method includes: (1) vertically raising the suction cup that holds the board at the storage location to the upper limit level at the board gripping position in the storage location; (2) vertically lowering the suction cup to the height of the table at the board gripping position; ■ A step in which the suction cup horizontally moves from the plate material gripping position to the plate material gripping position of the punch press machine at the height of the table level; ■ The work holder of the punch press machine is sucked by the suction cup at the plate material gripping position. A step in which the suction cup releases the suction of the plate after gripping the held plate, and a process in which the suction cup, which has released the plate, rises toward the upper limit level at the plate gripping position, and the upper limit level is the workpiece boulder. A sheet material autoloading method characterized in that the steps of ■■■■■ are performed successively in order, and the suction cup is located at a higher position than the moving member of a punch press machine that supports and moves.