JPS6247779B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a piler for sheets in a shear line, and an object of the present invention is to provide a piler that reduces the conveyance speed of sheets conveyed at high speed from the shear to the optimum speed for piling. .

Conventional pilers for shear lines have been known to cause creases, wrinkles, etc. when piling cut sheets due to impact when the sheet comes into contact with the side guide of the piler section or when it hits the stopper. There was a drawback that damage occurred. For this reason, conventionally, the conveyor arrangement in the shear line was configured as shown in Fig. 1 to convey high-speed sheets.
Measures have been taken to avoid the above-mentioned problems by lowering it on a low-speed piling conveyor.

That is, a shear inlet conveyor 2 and a shear outlet conveyor 3 are provided on the inlet and outlet sides of the drum shear 1, and a low-speed piling conveyor 4 is connected to the subsequent stage, and a wrapping conveyor 5 is provided above the conveyor. At the same time, a pile lift 6 and a stopper 7 are provided on the discharge side of the piling conveyor 4, and the sheets cut by the drum shear 1 are sent to the high-speed shear discharge side conveyor 3, and then further conveyed from the wrapping conveyor 5 to the pile conveyor. 4, the sheet falling from the wrapping conveyor 5 is transferred to the pile conveyor 5 by ON/OFF control of the electromagnetic roller 5a and electromagnets 5b and 4a incorporated in the wrapping conveyor 5 and the pile conveyor 4, respectively. The speed of the sheet on the piling conveyor 4 was reduced by partially wrapping it on the piling conveyor 4.

However, in these conventional devices, sheets are removed by ON/OFF control of electromagnets, which makes it difficult for the sheet to separate from the wrapping conveyor 5, causing subsequent sheets to push against it or the tail end of the sheet to be damaged. There were problems such as being caught in the wrapping conveyor 5. For this reason, even if the shear 1 has sufficient cutting capacity, its cutting speed is generally reduced to the speed limit of its wrapping capacity, which is extremely inefficient.

The present invention was made to address these conventional problems, and will now be described based on the embodiment shown in FIG.

In the figure, reference numeral 3 denotes a shear outlet conveyor incorporating an electromagnetic rail 3a therein, and a linear motor 9 equipped with a gap holding device 8, such as a liner, is provided between it and the pyralift 6 at the subsequent stage. A belt conveyor 10 parallel to the end of the shear outlet conveyor 3 on the Pyra lift side, above the linear motor 9, and the Pyra lift 6 is installed via electromagnetic rollers 11. On the back side of the belt of the belt conveyor 10, there is a suction body 1 which is controlled to move at the same speed as the belt and is provided with an excitation part 12' having a certain width (range where only the leading end of the sheet S can be suctioned).
2. Equipped with, for example, a magnet array or a linear motor. Reference numeral 13 denotes a detection device, which is located above the shear outlet conveyor 3 and behind the belt conveyor 10 in the sheet conveyance direction.
detects the leading edge of the sheet being conveyed by the sensor, and controls the suction body 12 (to suck only the leading edge of the sheet S) and the electromagnetic roller 1 based on the detection signal.
1 ON/OFF control.

The structure of the present invention is as described above, and its operation will be explained next.

When the sheet S cut by the shear 1 is located at the exit end of the electromagnetic rail 3a installed in the shear exit conveyor 3, the detection device 13 provided above is activated, and the electromagnetic roller 11 (attractor 12 However, in the embodiment, the electromagnetic roller 11) is turned on and the leading edge of the sheet S is sucked by the electromagnetic roller 11 while the trailing edge of the sheet S remains hanging.

Then, as the sheet S moves, the leading edge of the sheet S is transferred to the belt conveyor 10 equipped with a suction body 12, and when this transfer is completed, the electromagnetic roller 11
It will be turned off. The inherited sheet S moves with the excitation section 12' of the suction body 12 already controlled by the detection signal of the detection device 13 attracting the leading end of the sheet S, and moves forward while maintaining the above state. When the drooping portion of the sheet S is positioned above the lower linear motor 9 due to the forward movement, the sheet S is decelerated to a required speed by receiving the suction force and braking force applied from the linear motor 9. Due to this deceleration, the preceding sheet S and the following sheet S come close to each other, but since the rear end of each sheet S is in a hanging state, the following sheet S is placed above the rear end of the preceding sheet S. The leading edge of the sheet S can enter the sheet, and the sheet can be decelerated without hitting the following sheet S.
When the leading end of the sheet S approaches the stopper 7, it leaves the suction section of the belt conveyor 10, hits the stopper 7, falls onto the pile lift 6, and is piled onto the lift.

At this stage of control operation, the linear motor 9 has a suction force that suctions the tail end of the sheet S being conveyed;
When the sheet S hits the stopper 7, a braking force is constantly applied to decelerate the sheet S to the required speed. Therefore, as the sheet S moves forward, it is decelerated and lags behind the speed of the belt conveyor 10, so that the sheet S is sucked. Although the suction position of the leading end of the sheet being sucked by the body 12 shifts, the range of the shift is kept within the length of the suction body 12.

The linear motor used in the present invention has been known for a long time, and its principle is to expand the rotary motor linearly and convert the electromagnetic force generated in the linear direction of the rotor directly into linear mechanical energy. It is a converting device that has many characteristics, such as being able to brake the propulsive force of the seat regardless of friction, or that the braking force can be freely increased or decreased depending on the number of combinations.

As described in detail above, the present invention includes a conveyor equipped with a suction body whose excitation part can be movably controlled, and a linear motor installed below the conveyor. The excitation section described above attracts only the above-described excitation part, moves the sheet tail end in a hanging state, and when the tail end of the sheet is positioned above the linear motor, the sheet receives the suction force and braking force applied from the linear motor. is reduced to the required speed.

Due to this deceleration, the leading sheet and the following sheet approach each other, but since the tail end of each sheet is hanging down, the leading edge of the following sheet is above the tail end of the leading sheet. The vehicle can enter the vehicle and decelerate the seat without colliding with the following seat, and since the seat enters a lap state, the deceleration of the seat can be increased.

Furthermore, by providing the belt conveyor up to the top of the Pyra lift, the leading edge of the sheet can be prevented from falling below the top surface of the linear motor even at a position above the Pyra lift. As a result, when the sheet is piled on the Pyralift, it can be piled in a nearly horizontal state.

In this way, according to the device of the present invention, sheets transported at high speed are lapped without contacting each other, making it possible to rapidly decelerate the sheets, and when piling sheets, the sheets are nearly horizontal above the pile lift. Since the sheets are piled in a piled state, rubbing between the sheets can be reduced and damage to the sheets can be reduced.

Therefore, efficient and stable piling can be performed, making it extremely effective as a piler for high-speed shear lines.

[Brief explanation of the drawing]

Figure 1 is a conveyor layout diagram of a conventional shear line.
FIG. 2 is a conceptual diagram of main parts showing an embodiment of the present invention. 3... Shear outlet conveyor, 4... Piling conveyor, 6... Pyralift, 7... Stopper,
8... Gap holding device, 9... Linear motor,
10... Belt conveyor, 11... Electromagnetic roller,
12... Attraction body, 12'... Excitation section, 13... Detection device.

Claims (1)

[Scope of Claims] 1. A linear motor is provided between the shear exit side conveyor and the Pyralift in the shear line, and is provided with a gap holding device on the upper surface of the magnetic pole and applies braking force and suction force to the sheet tail end. A belt conveyor equipped with a suction body whose excitation part is movably controlled within a range capable of sucking only the leading edge of the sheet is installed above the end of the conveyor on the Pyralift side and the linear motor and the Pyralift, and A detection device is provided above the output conveyor and behind the belt conveyor in the sheet conveying direction to detect the leading edge of the sheet conveyed on the shear output conveyor to the belt conveyor via the suction body. is sucked to make the tail end of the sheet hang down, and when the tail end comes into contact with the linear motor as the sheet moves forward,
A piler incorporating a linear motor, characterized in that suction force and braking force from the linear motor are applied to the tail end.