JPH03131417A - Plate piling device for shearing machine - Google Patents

Abstract

PURPOSE:To pile sheared plates without any damage thereto by constructing a device in a way that the traveling of an endless belt is stopped corresponding to the transfer position of a plate to be detected and the electromagnet of a carrying-out conveyor is demagnetized. CONSTITUTION:At a point of time of shearing a plate W, a back gauge 9 is elevated to travel an endless belt 27. Under a condition that the sheared plate W is pressed to the lower surface of the under-span portion 27a of the endless belt 27 by magnetic adsorbing force due to an electromagnet 31, the plate is horizontally moved from near a shearing work position to a piling position side by a piler 35. The passing of the top end of the plate W is detected by a plate passing detection switch 33, and whereby at a point of time of passing an extremely short given time, the rotation of an electric-powered motor 29 is stopped and also electricity supplied to the electromagnet 31 is stopped which is demagnetized. As a result, the plate W is dropped on the lifter table 39 of a piler 35 nearly horizontally to be able to be piled on the lifter table 39.

Description

[Detailed Description of the Invention] [Object of the Invention] (Industrial Application Field) The present invention relates to a stacking device for stacking plate materials sheared by a shearing machine, and particularly relates to a stacking device for stacking plate materials sheared by a shearing machine, and particularly for moving the plate materials from the vicinity of the shearing operation position to the stacking position. This relates to a board stacking device that includes a conveyance means for conveying up to.

(Prior Art) Conventionally, in order to accumulate the sheared plates by a shearing machine, the sheared plates are conveyed by a belt conveyor device of a general structure from the vicinity of the shearing operation position by the shearing machine to the accumulation position by a piler or the like. This is done by sliding the plate material onto a piler from the conveying end of the belt conveyor device.

(Problem to be Solved by the Invention) In the above-mentioned accumulation of board materials, the board material that slides down from the belt conveyor device is loaded onto the piler while rubbing the top surface of the board materials already loaded on the piler with its leading edge. This causes scratches on the top surface of the board on the piler.

SUMMARY OF THE INVENTION In view of the above-mentioned problems, an object of the present invention is to provide a board stacking device that can stack boards sheared by a shearing machine without damaging them.

[Structure of the Invention] (Means for Solving the Problems) According to the present invention, the above-mentioned object is to provide an endless belt extending between the vicinity of the shearing work position of the plate materials by the shearing machine and the accumulation position. An electromagnetic adsorption type in which the plate material is attracted to the lower surface of the endless belt by an electromagnet disposed on the back side of the belt, and the plate material is transported from near the shearing work position to above the stacking position by the running of the endless belt. an unloading conveyor device, a board transporting position detecting means for detecting that the board has been transported above the stacking position by the unloading conveyor, and a board transporting position detected by the board transporting position detecting means; This is achieved by a sheet stacking device for a shearing machine, characterized in that it has a control means for stopping the running of the endless belt and demagnetizing the electromagnet.

(Function) According to the above-described configuration, the plate material is transported by the unloading conveyor device to just above the stacking position, and at this transport position, the running of the endless belt is stopped and the electromagnet is demagnetized, so that the piler is placed in a horizontal state. It will fall onto a collection table like this.

(Example) The present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 shows one embodiment of a sheet stacking device for a shearing machine. In FIG. 1, reference numeral 1 indicates a shearing machine, and the shearing machine 1 has a fixed lower blade 3 and an upper blade 5 that is moved up and down by a drive device (not shown). Board material W placed on
is sheared by a lower blade 3 and an upper blade 5.

A back gauge 9 is provided behind the upper blade 5 for determining the shear length of the plate material. The back gauge 9 is connected to a piston rod 17 of a fluid pressure cylinder device 15 attached to a movable block 13 screwed to a feed screw 11 extending in the longitudinal direction of sheet material shearing by the shearing machine 1, that is, in the left-right direction in FIG. When the movable block 13 moves in the axial direction of the feed screw 11 due to the rotation of the feed screw 11, that is, in the direction of the length of the sheet material sheared by the shearing machine 1, the movable block 13 moves in the same direction as the feed screw 11. There is. Since the back gauge 9 is fixed to the piston rod 17 of the fluid pressure cylinder device 15, it can move up and down at a predetermined position in the plate material shearing length direction, and when it is in the lowered position as shown in the figure, the workpiece table 7
The shearing length of the plate W is repeatedly determined by abutting the tip of the plate W placed thereon and lowering the upper blade 5 in this state. The raised position of the back gauge 9 is the same as the endless belt 2 of the unloading conveyor device 21, which will be described later.
The endless belt 2 is
It is set at a position above the underspan portion 27a of No.7.

The operation of the fluid pressure cylinder device 15 is controlled by an electromagnetically actuated control valve 53 (see FIG. 2) provided in its fluid pressure control circuit.

The vertical movement of the back gauge 9 is controlled by a fluid pressure cylinder device 15.
Alternatively, an electromagnetic actuator such as a solenoid device may be used. The feed screw 11 is drivingly connected to a servo motor 19 and is rotationally driven by the servo motor 19. The servo motor 19 is driven based on a numerical signal corresponding to the shear length of the plate material W from an operation command panel (not shown).

An electromagnetic attraction type delivery conveyor device 21 is provided behind the upper blade 5. The carry-out conveyor device 21 has an endless belt 27 stretched between a roller 23 placed near the upper blade 5 and a pulley 25 placed above the piler placement position behind the roller 23. The belt 27 extends substantially horizontally between the pulleys 23 and 25 and between the vicinity of the shearing work position of the plate material W by the shearing machine 1 and the accumulation position. Underspan portion 27a of endless belt 27
The height position of the work table 7 is determined to be higher than the height position of the work table 7 by a dimension corresponding to the thickness of the plate material W to be sheared. The plate material W which has been pressed against the back gauge 9 is exposed to the underspan portion 2 of the endless belt 27 on its upper surface.
It comes into sliding contact with 7a.

An electric motor 29 is drivingly connected to the pulley 23, and the pulley 23 is rotated by the electric motor 29 in a counterclockwise direction as viewed in FIG. As a result, the underspan portion 27a of the endless belt 27 runs from the pulley 23 side to the pulley 25 side, that is, from the vicinity of the shearing work position toward the accumulation position.

A plurality of electromagnets 31 are arranged on the back side of the underspan portion 27a of the endless belt 27 in a direction in which the endless belt 27 extends and are spaced apart from each other. The electromagnet 31 is connected to the pulley 23
It is arranged over almost the entire underspan section 27a of the endless belt 27 from the vicinity of the pulley 25 to the vicinity of the pulley 25, and in the excited state, the plate material W that is in sliding contact with the underspan section 27a of the endless belt 27 is underspanned. This is magnetically held in a state where it is attracted to the lower surface of the portion 27a.

A plate material passage detection switch 33 is provided near the pulley 25 to detect that the plate material W has passed. The plate material passage detection switch 33 is constituted by a non-contact switch such as a photoelectric switch or a reed switch, and is set to be turned on, for example, only when a plate material is close to it.

A piler 35 is arranged at a collection position determined by the discharge conveyor device 21. The piler 35 has a traveling truck 37 and a lifter table 39 that is provided on the traveling truck 37 and is moved up and down by an electric motor (not shown), and the lifter table 39 receives the plate material W on its upper surface. It is designed to support loading. A rear stopper 41 in the form of a barrier is erected at one end of the lifter stand 39 to define the loading position of the plate material W. The piler 35 may be manually positioned at a predetermined accumulation position as shown in the figure by an operator.

FIG. 2 shows an example of a control device for a board stacking device according to the present invention. The control device includes a central control section 43, a belt conveyor control section 45, an electromagnet control section 47, and a shear control section 49.

The centralized control unit 43 is given a signal regarding the shearing operation of the shearing machine 1, and is also given a signal from the plate passage detection switch 33 regarding whether or not a plate has passed, and based on these signals controls the belt conveyor control unit 45 and the electromagnet control unit. A control signal is output to each of the section 47 and the shear control section 49.

In addition to the control signal from the centralized control section 43, the belt conveyor control section 45 is given a signal regarding the speed of the endless belt 27 from the belt conveyor speed detector 51, and after performing speed feedback control based on this signal, controls the rotation of the electric motor 29. The stop is controlled based on the control signal from the central control section 43 at the timing shown in the time chart shown in FIG.

The electromagnet control section 47 controls the excitation and demagnetization of the electromagnet 31, that is, the energization of the electromagnet 31, at the timing shown in the time chart shown in FIG. 3, based on the control signal from the central control section 43. It has become.

The shear control section 49 is a central control section 43
As shown in the time chart of FIG. 3, the back gauge 9 is positioned at the lowered position as shown until one shearing operation of the plate material is completed, and the back gauge 9 is placed in the lowered position as shown in the figure, as shown in the time chart of FIG. The operation of the fluid pressure cylinder control valve 53 is controlled to be in the raised position from the time the shearing operation is completed until the passage of the plate is detected by the plate passage detection switch 33.

Next, the operation of the board stacking device according to the present invention will be explained using the time chart of FIG.

At time T1 in the time chart shown in FIG. 3, the electromagnet 31 is energized and excited, the electric motor 29 rotates, and the endless belt 27 begins to run. Next, the plate material W on the work table 7 is pushed toward the shearing work position.

The plate material W comes into contact with the underspan portion 27a of the endless belt 27a, and moves to the right as seen in FIG. It comes into contact with gauge 9. As a result, the carry-out conveyor device 21 functions to ensure that the leading edge of the plate material W moves to a position where it comes into contact with the back gauge 9 without hanging down. Next, at time T2, the rotation of the electric motor 29 is stopped, and the running of the endless belt 27 is stopped. As a result, the plate material W stops in contact with the back gauge 9.

In this state, the upper blade 5 descends, and the plate material W is sheared.

Next, at time T, that is, when shearing is completed, the back gauge 9 is raised by the fluid pressure cylinder device 15, and is separated from the contact with the plate material W. Then, at time T4, motor 2
9 is restarted, and the endless belt 27 is restarted. As a result, the sheared plate material W is moved to the underspan portion 2 of the endless belt 27 by the magnetic attraction force by the electromagnet 31.
The endless belt 27 is pressed against the lower surface of the belt 7a.
As it travels, it horizontally moves from the vicinity of the shearing work position toward the pulley 25, that is, toward the stacking position by the piler 35. Then, at time T5, passage of the tip of the plate W is detected by the plate passage detection switch 33, and at time T6, when a predetermined time that is much shorter than this has passed, the electric motor 2
At the same time, the rotation of the electromagnet 9 is stopped, and the energization of the electromagnet 31 is also stopped, so that the electromagnet 31 is demagnetized.

As a result, the plate material W falls almost horizontally onto the three lid stands of the piler 35, and is stacked on the three lifter stands.

When the plate passing detection switch 33 no longer detects the presence of the plate W again at time T7 due to the fall of the plate W, the electric motor 29 is rotated for the next operation at time T8, which is a much shorter predetermined time. At the same time, the electromagnet 31 is energized and the fluid pressure cylinder device 15 returns the back gauge 9 to its original lowered position.

Although the present invention has been described in detail with respect to specific embodiments above, the present invention is not limited thereto.
It will be apparent to those skilled in the art that various embodiments are possible within the scope of the invention.

[Effects of the Invention] As is clear from the above description, in the plate material accumulating device according to the present invention, the plate materials are conveyed to just above the stacking position by the electromagnetic attraction type unloading conveyor device, and at this conveyance position, the endless belt is Running stopped + f-.

By demagnetizing the electromagnet, it will fall horizontally onto a stacking table such as a piler, thereby avoiding damage to the plates already on the stacking table due to the falling of this plate. This ensures that so-called intact accumulation takes place.

[Brief explanation of the drawing]

FIG. 1 is a schematic configuration diagram showing one embodiment of the sheet material accumulating device for a shearing machine according to the present invention, FIG. 2 is a block diagram showing a control device for the sheet material accumulating device according to the present invention, and FIG.
The figure is a time chart showing the operation of the board stacking device according to the present invention. 1... Shearing machine 3... Lower blade 5... Upper blade 9... Back gauge 21... Unloading conveyor device 27... Endless belt 31... Electromagnet 33...
・Plate material passage detection switch 35...Piler

Claims (1)

[Claims] The endless belt is placed in a state where the plate material is attracted to the lower surface of the endless belt by an electromagnet that extends between the vicinity of the shearing work position of the plate material by the shearing machine and the accumulation position, and is arranged on the back side of the endless belt. an electromagnetic adsorption type carry-out conveyor device that transports the plate material from near the shearing work position to above the stacking position by running; and detecting that the plate material has been conveyed to above the stacking position by the carry-out conveyor device. It is characterized by comprising a plate material conveyance position detecting means, and a control means for stopping the running of the endless belt and demagnetizing the electromagnet according to the conveying position of the plate material detected by the plate material conveying position detecting means. Shearing machine board accumulating device.