JPH11170197A - Removing device for punched chip of sheet - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a removing device for a punched chip of a sheet which can certainly remove sheet punched chips remaining in a product section and concentratedly collect the sheet punched chips. SOLUTION: A first suction conveyor 7 to suckingly carry a product section is provided on the downstream side of a sheet carrying conveyor 2 for carrying a product section A sent out of a sheet punching device 1 in one direction. A second suction conveyor 10 for suckingly carrying the product section A is provided so as to extend over between both the conveyors 2, 7, and when the second suction conveyor 10 suckingly carrys the product section A, a first suction duct 13 provided below the second suction conveyor 10 sucks the product section A to suckingly remove the sheet punched chips remaining in the product section A. When the product section A fed from the second suction conveyor 10 is suckingly carried by the first suction conveyor 7, a second suction duct 14 provided above the first suction conveyor 7 sucks the product section A to suckingly remove the sheet punched chips remaining in the product section A.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for removing sheet punching debris for removing sheet punching debris remaining in a product portion when the product portion punched into a predetermined shape by a sheet punching device such as a rotary die cutter is transferred. It is about.

[0002]

2. Description of the Related Art Generally, a product portion punched into a predetermined shape by a sheet punching device is transferred toward a sheet stacking portion and stacked at a predetermined height.

[0003] The sheet punching device uses a punching blade implanted in a punching die to abut or cut into a receiver such as an anvil and the like, which is opposed to the entire surface of the punching blade. Because it is a configuration that punches into a shape, if the height of the blade edge of the punching blade is inadequate or the blade edge wears out, the sheet can not be punched reliably, punching debris hangs from the product part, The punched waste may be sent out together with the product part while remaining in the product part, or may hinder the processing in the next step.

Further, even when the product portion is reliably punched, punched chips may remain in the punching die, and the punched chips may fall onto the product portion and be sent out together with the product portion.

[0005] If the product parts are stacked in a state in which the cutting waste remains in the product part, the product parts cannot be stacked neatly without collapsing the product parts due to the punching waste entering between the product parts, or in the case of a corrugated cardboard sheet, As a result, the corrugated steps of the product part are crushed, resulting in a defective product, and also hindering the processing in the next step.

In order to solve such inconveniences, there has been proposed a sheet stacker in which a product section punched by a punching device is stacked on a sheet stacking section, which incorporates a sheet dust removing mechanism.

FIG. 6 shows a conventional sheet stacker having a sheet dust removing mechanism. This sheet stacker is provided with a product section A punched by the rotary die cutter 20 on a downstream side of a rotary die cutter 20 for punching a sheet into a predetermined shape.
a, and is transported in one direction by being sandwiched from above and below by a double row of belts 22a of a sheet holding conveyor 22. At the time of the transportation, the belt 21a is rotated by a vibration generating rotor 23 provided below the belt 21a of the sheet transport conveyor 21. Vibration is applied to remove sheet blanks from the product section A downward.

Further, the product portion A is sent from the sheet conveying conveyor 21 onto a sheet discharge conveyor 24 provided on the downstream side thereof, and air is supplied from the air injection nozzle 25 to the upper surface of the product portion A conveyed by the sheet discharge conveyor 24. Injection is performed to blow off the sheet blanks still remaining in the product section A.

The product section A sent out from the sheet discharge conveyor 24 is sent to the sheet stacking section 27 by the stacker conveyor 26 and is stacked.

[0010]

In the above-described removal of the punched sheet waste, in particular, it is located at the center of the product part A and hangs down from the sheet punched waste and the product part which remain in a state fitted with the product part. In the case of punched sheet waste, it may not be possible to reliably remove the waste by vibration or air injection applied to the product part. When the product part A from which the sheet punching debris is not completely removed is transferred by the sheet discharge conveyor 24, the sheet punching debris hangs down from the product part A, or between the product part A and the double row belt 24a of the sheet discharge conveyor 24. Is transported forward in the state of being located at. In this case, the air jetted from the air jet nozzle 25 cannot collide with the sheet punching debris and may not be removed.

Further, since the sheet punching debris remaining on the upper surface of the product part A is blown off by the air jetted from the air jet nozzle 25, the sheet punching debris is scattered and the product part A is again scattered.
The sheet is conveyed while still falling on the upper surface of the sheet, or the sheet cutting waste is scattered around, and it is difficult to collect.

SUMMARY OF THE INVENTION It is an object of the present invention to provide an apparatus for removing sheet punching debris which can reliably remove sheet punching debris remaining in a product part and collectively collect sheet punching debris. It is.

[0013]

According to the present invention, there is provided a suction conveyor for adsorbing one side of a product part sent out from a sheet punching device and conveying the product part in one direction; A suction duct for sucking the product portion sucked and conveyed by the suction conveyor from the back side with respect to the suction surface is adopted.

Here, the suction conveyor may be one that sucks the product part from the upper surface and transports it in one direction, or one that sucks the product part from the lower surface and transports it in one direction. Good. In the case of a suction conveyor that sucks the product part from the upper surface, a suction duct is provided below the suction conveyor, while in the case of a suction conveyor that sucks the product part from the lower surface, a suction duct is provided above the suction conveyor. .

Further, in the present invention, a suction conveyor for sucking an upper surface of a product part sent from a sheet punching device and transporting the product part in one direction, and a suction conveyor for sucking a lower surface of the product part and transporting the product part in one direction. Are provided continuously with each other, and a first part for sucking the product part from below under one suction conveyor for sucking the product part from the upper surface.
And a second suction duct is provided above the other suction conveyor to suction the product part from above.

As described above, by applying the suction force of the suction duct to the product portion conveyed by the suction conveyor, the sheet punching waste remaining in the product portion can be removed by suction, and the sheet punching waste can be removed. Can be collected in a concentrated manner.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

As shown in FIGS. 1 and 2, the sheet S
Is punched into a predetermined shape by a sheet punching device 1 composed of a rotary die cutter.

FIG. 5 shows an example of a punched sheet, in which A indicates a product part and B indicates punched sheet waste. Normally, the sheet punching waste B is held by the sheet punching die of the sheet punching apparatus 1 and separated from the product part A, and then discharged from the sheet punching die. In some cases, all the sheet blanks B cannot be separated and removed from the product section A, and the sheet blanks B may be sent out together with the product section A.

Further, due to incomplete punching, the sheet punching waste B may be partially connected to the product section A and sent out in a hanging state.

On the downstream side of the sheet punching device 1, there is provided a sheet transport conveyor 2 for receiving the product portion A sent from the sheet punching device 1 and transporting the product portion A in one direction.

On the sheet conveying conveyor 2, there is provided a sheet pressing conveyor 3 for nipping and transferring the product portion A from above and below with the sheet conveying conveyor 2.

The sheet conveying conveyor 2 and the sheet holding conveyor 3 have double rows of belts 2a, 3a.
a and 3a are arranged so as to oppose each other vertically. Further, the belts 2a and 3a can be adjusted in the left-right direction in accordance with the type of the product part A, and are arranged at a position avoiding the sheet punching waste B when the sheet punching waste B is transferred together with the product part A. Is done.

The belt 2a in the sheet conveyor 2
Below the carrier-side belt, a vibration generator 4 for applying vibration to the belt 2a is provided.

The vibration generating device 4 comprises a first vibration generating rotor 5 and a second vibration generating rotor 6 which extend long in the moving direction of the belt 2a. I try to hit it.

At the downstream side of the sheet conveying conveyor 2, there is provided a first suction conveyor 7 for adsorbing the lower surface of the product part A and conveying the product in one direction.
Is provided between the sheet feeding conveyor 2 and the sheet discharging conveyor 2 discharge end.

The first suction conveyor 7 is provided with a suction box 9 below the carrier side belt 8a of the perforated belts 8 arranged in double rows, and applies suction force from the suction box 9 to small holes of the carrier side belt 8a. The lower surface of the product portion A is sucked and applied, and the product portion A is conveyed by the movement of the perforated belt 8.

A second suction conveyor 10 is provided on a supply end of the first suction conveyor 7, and a supply end of the second suction conveyor 10 is disposed on a discharge end of the sheet conveying conveyor 2.

The second suction conveyor 10 is provided with a suction box 12 above the carrier side belt 11a of the perforated belts 11 arranged in double rows, and applies suction force from the suction box 12 to the holes of the carrier side belt 11a. Thus, the product part A sent from the sheet conveying conveyor 2 is sucked from the upper surface, and the product part A is sent onto the first suction conveyor 7 by the movement of the perforated belt 11.

Below the second suction conveyor 10, between the discharge end of the sheet conveying conveyor 2 and the supply end of the first suction conveyor 7, a first suction duct 13 which is long in the width direction of the apparatus is provided. As shown in FIG. 3, the upper part of the suction duct 13 is opened, and the second suction conveyor 1 is opened.
0 sucks the product part A conveyed from below. This suction force is weaker than the suction force by which the second suction conveyor 10 sucks the product part A, and is strong enough not to hinder the conveyance of the product part A.

Above the first suction conveyor 7, a second suction duct 14 which is long in the width direction of the apparatus is provided. As shown in FIG. 4, the lower part of the second suction duct 14 is open, and the second suction duct 14 sucks the product part A from above. The suction force of the first suction conveyor 7 is the product part A.
Is weaker than the suction force for adsorbing the product portion A and does not hinder the conveyance of the product portion A.

Now, when the product section A is sent out from the sheet punching device 1, the product section A is transferred to the sheet conveying conveyor 2
The sheet is conveyed in one direction while being clamped from above and below by the sheet press conveyor 3.

At the time of conveyance, the carrier-side belt 2a of the sheet conveyance conveyor 2 is vibrated by the operation of the vibration generator 4, and the vibration is applied to the product section A. For this reason, if the sheet punching waste B remains in the product part A, a separating force acts on the sheet punching waste B, and the hanging sheet punching waste B etc. which is not separated and removed from the product part A is separated and To fall.

When the product part A is conveyed to the discharge end of the sheet conveying conveyor 2, the upper surface of the product part A is sucked by the second suction conveyor 10, and the product part A is transferred toward the first suction conveyor 7.

When the product section A sucked and conveyed by the second suction conveyor 10 passes above the first suction duct 13, the suction force applied to the suction duct 13 acts on the lower surface of the product section A, Product part A by the suction force
The remaining sheet punching waste B is sucked and removed into the suction duct 13.

When the product portion A sucked and conveyed by the second suction conveyor 10 is sent onto the first suction conveyor 7, the product portion A is further conveyed by the first suction conveyor 7 forward.

A second suction duct 14 is provided on the first suction conveyor 7, and when the product part A passes below the second suction duct 14, a product force is applied to the product duct A by the suction force acting on the suction duct 14. Sheet punching debris B still remaining on the upper surface of A are sucked and removed into the suction duct 14.

As described above, the second suction conveyor 1
The suction force acting on the first suction duct 13 and the second suction duct 14 is applied to the upper and lower surfaces of the product section A sucked and conveyed by the first suction conveyor 7 and the product section A. The remaining sheet punching waste B can be surely removed by suction, and the sucked and removed sheet punching waste can be collected and concentrated at a predetermined position.

Further, the second suction conveyor 10 for sucking and transferring the product part A from the upper surface is connected to the sheet conveying conveyor 2.
And the first suction conveyor 7 so that the product section A sent out from the sheet conveying conveyor 2
Can be smoothly sent to the first suction conveyor 7.

Further, since the second suction conveyor 10 and the first suction conveyor 7 are configured to suck and hold the product portion A and transport the product portion A, the first suction duct 13 and the second suction duct 14 are connected to the product portion A. Even if the remaining sheet punching debris B is removed by suction, the movement of the product part A is not disturbed. When the product part is stacked on the sheet stacking part by the conveyor device following the first suction conveyor 7, the product part is excellent. Can be stacked.

In the embodiment, the product section A sent out from the sheet punching device 1 is sandwiched from above and below by a sheet conveying conveyor 2 and a sheet holding conveyor 3 and sent to a second suction conveyor 10, and is vibrated in advance during the conveyance. The sheet punching debris B remaining in the product part A is easily removed from the product part A, and the sheet punching debris B is more effectively suction-removed by the first and second suction ducts 13 and 14. be able to.

Note that the sheet holding conveyor 3 may be omitted, and the product section A may be conveyed only by the sheet conveying conveyor 2.

[0043]

As described above, in the present invention, since the suction force of the suction duct is applied to the product portion sucked and conveyed by the suction conveyor, the product portion remains in the product portion during transfer. Sheet punching waste can be reliably removed by suction.

Further, since the punching dust is removed by suction, the punching dust is not scattered and remains again on the upper surface of the product portion, and the punching dust can be collected in a concentrated manner. .

[Brief description of the drawings]

FIG. 1 is a schematic view showing an embodiment of a sheet punching waste removing apparatus according to the present invention.

FIG. 2 is a partially cutaway plan view of the above.

FIG. 3 is a sectional view taken along the line III-III in FIG. 2;

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2;

FIG. 5 is a front view showing an example of a punched sheet.

FIG. 6 is a schematic view showing a conventional sheet punching waste removing apparatus.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Sheet punching device 7 1st suction conveyor 10 2nd suction conveyor 13 1st suction duct 14 2nd suction duct

Claims (4)

[Claims] 1. A suction conveyor for adsorbing one side of a product part delivered from a sheet punching device and conveying the product part in one direction, and a product part sucked and conveyed by the suction conveyor from a back side with respect to the suction surface. A sheet punching waste removing device comprising a suction duct for sucking. 2. The apparatus according to claim 1, wherein the suction conveyor is configured to adsorb an upper surface of the product part, and the suction duct is provided below the suction conveyor. 3. The apparatus according to claim 1, wherein the suction conveyor is configured to adsorb a lower surface of the product part, and the suction duct is provided above the suction conveyor. 4. A suction conveyor for adsorbing an upper surface of a product part sent from a sheet punching device and conveying the product part in one direction, and a suction conveyor for adsorbing a lower surface of the product part and conveying the product part in one direction. A first suction duct for sucking the product part from below under one suction conveyor for sucking the product part from above, and a second suction duct for sucking the product part from above above the other suction conveyor. Sheet punching debris removal device with suction duct.