JP2009119359A - Remover of paper dust - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a compact and inexpensive remover of paper dust, which can remove efficiently the paper dust. <P>SOLUTION: The remover of the paper dust removes the paper dust sticking to the product sheet punched out from a containerboard, a paper board, or the like. In a batch shape in which the product sheets are horizontally laminated, two faced sides among four sides of the product sheet are used as one set, and the remover has two stages brushing two sets separately. One stage aligns an end face of the product sheet lifting it above a conveying means to brush two faced sides except a support, and the other stage brushes the remaining two faced sides in a state that the product sheet is aligned and arrested on the conveying means. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a paper dust removing device that removes paper dust adhering to the outer peripheral surface of a product sheet when punched into a developed shape of a box using a paper sheet such as corrugated paper or paperboard.

An assembly box made of corrugated paper, paperboard, or the like is formed by punching out the developed shape of a product from rectangular corrugated paper, paperboard, or the like. The punching is performed with a flat punching die in which a punching blade is implanted or a cylindrical punching die, and the cutting edge of the punching blade is worn by repeating the punching operation to become a flat surface. When corrugated paper or the like is punched with a punching blade whose blade edge is worn, paper dust and thread scraps are generated on the cut surface because the product is punched by surface cutting.
The paper dust and filamentous waste are adhered to the outer peripheral surface of the punched product sheet by static electricity. Moreover, even if the paper dust and filamentous waste are separated into the product sheet portion and the surrounding waste portion by the stripping device in the next step of the punching step, they remain attached to the outer peripheral surface of the product sheet.

  Therefore, as a device for removing the paper dust, the batch-shaped product sheet is brushed on the outer peripheral surface of the product sheet with a roll brush while being conveyed substantially vertically, and the paper powder removed by the brushing is sealed in a sealed chamber. An apparatus that collects dust with a suction device has been developed and proposed (see, for example, Patent Document 1).

However, since the above apparatus raises and conveys the batch-shaped product sheet substantially vertically, the product sheet (for example, a case for storing strawberries, tomatoes, etc.) in which the cuts are finely and complicatedly formed on the outer peripheral edge of the sheet, and For product sheets with extremely weak folding ruled lines (cases where the ruled lines are deeply formed and the flaps can be easily folded), when the product sheet is raised substantially vertically, the product sheets become uneven due to irregularities on the outer peripheral edge of the sheet, or flaps at the ruled line part There is a problem that alignment failure occurs, such as breaking and irregularity, and brushing cannot be performed with a roll brush for removing paper dust.
In addition, since the upper and lower surfaces of the batch-type product sheet are reversed at the inlet and outlet of the paper dust removal device to convey the batch-type product sheet upright, the device requires a reversing machine, and the device is large. It requires a large installation area.

JP 2003-164812 A

  The present invention has been made in view of the above-described problems of the prior art. The object of the present invention is to remove paper dust from a product sheet having a complicated outer peripheral shape and a remarkably weak folding ruled line, and is compact. It is to provide an inexpensive paper dust removing device that can efficiently remove paper dust.

In order to achieve the above object, the paper dust removing device of the present invention removes paper dust and thread-like waste adhering to the outer peripheral surface of a punched product sheet, and remains in a batch form in which product sheets are horizontally stacked. Brush the outer peripheral surface (four surrounding sides) of the product sheet, and suck and remove paper dust, thread waste, etc. peeled from the product sheet.
The paper dust removing device is a paper dust removing device that removes paper dust adhering to a product sheet punched out from corrugated paper, paperboard or the like. There are two stages for brushing the two sets separately, with two opposing sides as one set, and one stage includes a conveying means for conveying a batch-shaped product sheet to a predetermined position, A front stopper that protrudes and protrudes with respect to the conveyance surface of the conveyance unit, a rear end surface alignment unit that aligns a rear end surface of the product sheet in the conveyance direction, and a brushed position of the aligned product sheet to the brushing position above the conveyance unit. A lifting / lowering product sheet lifting unit, and a brushing unit for removing paper dust by brushing the outer peripheral surfaces of two opposing sides other than the side supported by the lifting unit, One stage includes a conveying unit that conveys the product sheet to a predetermined position, a front stopper that protrudes and appears with respect to a conveying surface of the conveying unit on a downstream side in the conveying direction of the conveying unit, and a rear end surface in the conveying direction of the product sheet. Rear end surface aligning means that aligns and restrains the batch form of the product sheets so as not to be disturbed during brushing, and the outer peripheral surfaces of two opposite sides other than the sides supported by the front stopper and the rear end surface aligning means are brushed to make paper dust And a brushing unit that removes water (claim 1).
The two stages are arranged so that the conveying direction of the conveying means for conveying the batch-shaped product sheets is in a vertical line.
Also, the arrangement of the two stages includes a stage (stage equipped with a product sheet lifting unit) for brushing two opposite sides of the product sheet along the conveying direction of the conveying means, and a product sheet orthogonal to the conveying direction of the conveying means. Any of the stages for brushing the two opposite sides may be arranged on the front side.
Further, the conveying means arranged on the two stages is, for example, slightly longer than the largest product sheet (width: 1300 mm, length: 750 mm).

  According to the above means, the product sheets conveyed in a batch form are aligned at the front stage and the rear end surface alignment means at the front and rear ends along the conveyance direction on the first stage located on the front side in the conveyance direction of the product sheets, After the alignment, the product sheet lifting unit lifts to the brushing position above the conveying means, and the two opposing sides that are not supported by the lifting unit are brushed by the brushing unit. After the brushing, the product sheet is lowered onto the conveying means by the lowering of the product sheet elevating unit, and is conveyed to the front stage by driving the conveying means. Then, in the same stage, the front and rear ends of the product sheet are aligned by the front stopper and the rear end surface alignment means as described above, and are attached and held, and in this state, two opposing sides that are not brushed on the previous stage are brushed. This completes the removal of the paper dust adhering to the outer periphery 4 of the batch-type product sheet.

The two brushing units in the two stages are arranged in parallel with the small block-shaped brushes facing the sides of the product sheet, and each brush unit is biased by a biasing means in a direction in contact with the end surface of the product sheet; It is supported so as to be slidable back and forth in the vertical direction.
According to the above means, the brushing unit has the small-sized block-shaped brushes arranged in parallel and is urged by the urging means in the direction in contact with the product sheet. The brush itself contacts and brushes by the biasing means corresponding to the uneven shape of the product sheet. Therefore, the outer peripheral surface of the product sheet can be reliably brushed and paper dust can be efficiently removed.

In addition, each brush unit of both brushing units may be formed with a suction port of suction means disposed in the brush.
According to the above means, since the suction port of the suction means is formed in the brush, the paper powder peeled from the product sheet by brushing is immediately sucked by the suction action generated in the suction port portion. Therefore, it is possible to prevent the paper dust from being scattered around and to improve the paper powder removal rate.

Furthermore, a batch receiver for supporting the lower surface of the batch-shaped product sheet may be disposed on both the stages.
In this case, when the width direction of the product sheet (direction perpendicular to the conveyance direction of the conveyance means) is supported by the support member provided in the conveyance means or the product sheet elevating means, the substantially central portion of the product sheet in its width direction is its own weight. Therefore, it is possible to prevent bending downward.

The paper dust removing apparatus according to the present invention has a complex outer peripheral shape (for example, a strawberry, a tomato case, etc.) and a product sheet with a remarkably weak bent ruled line in a batch form (horizontal laminated state). Thus, it is possible to efficiently remove the paper dust adhering to the outer peripheral four sides of the product sheet.
In addition, since the brushing for removing paper dust is performed with horizontal support, the apparatus can be made compact.
According to the second aspect of the present invention, even if the outer peripheral surface of the product sheet has irregularities, the brush can be brushed by contacting the irregularities of the product sheet. Therefore, the paper dust adhering to the outer peripheral surface of the product sheet can be reliably removed.

Furthermore, according to the configuration of the third aspect, since the paper powder peeled off by brushing is sucked into the suction port of the suction means provided in the brush, it is possible to prevent the paper powder from scattering around. Thereby, the removal rate of paper dust can further be improved.
Moreover, according to the structure of Claim 4, it can prevent that the substantially center part of the width direction of this product sheet bends below with dead weight, and can prevent a product sheet from bending.

Hereinafter, an example of an embodiment of a paper dust removing apparatus according to the present invention will be described with reference to the drawings.
FIG. 1 is a schematic side view showing the entire paper dust removing device A. The paper dust removing device A has four sides of the outer periphery of a product sheet a having a substantially rectangular shape in plan view supplied in a batch, and two opposite sides. As a set, two stages, a first stage A1 and a second stage A2, are arranged in a vertical row so as to brush in two sets.

  The first stage A1 is arranged below the conveying means 1, conveying means 1 that conveys the batch-shaped product sheets a to a predetermined position, a front stopper 2 that is arranged at the front end position in the conveying direction of the conveying means 1. Rear end face aligning means 3, product sheet lifting / lowering unit 4 that lifts or lowers the product sheet a on the transporting means 1 to a brushing position above the transporting means, and a product sheet supported by the product sheet lifting / lowering unit 4. and a brushing unit 5 for brushing the remaining two unsupported sides of a.

  The second stage A2 is a stage that brushes the remaining two opposite sides that have not been brushed in the first stage. Similarly to the first stage, the transport unit 6 that transports the batch-shaped product sheet a to a predetermined position; The front stopper 7 disposed at the front end position in the transport direction of the transport unit 6, the rear end surface aligning unit 8 disposed below the transport unit 6, and the front stopper 7 and the rear end surface aligning unit 8 on the transport unit 6. And a brushing unit 9 that brushes the remaining two opposite sides of the product sheet a that are aligned and sandwiched without brushing.

Hereinafter, the configuration of the first stage A1 and the second stage A2 will be described in detail.
The conveying means 1 is composed of two belt conveyors 1a and 1b that support both side portions in the width direction (direction orthogonal to the conveying direction) of the batch-shaped product sheet a fed through the inlet conveyor 10. The conveyors 1a and 1b are configured such that the interval between the belt conveyors 1a and 1b can be adjusted according to the width dimension of the product sheet a (for example, the minimum width 620 mm to the maximum width 1300 mm). The interval adjustment may be either electric (for example, a screw mechanism) or manually.

  The front stopper 2 arranged at a position slightly forward from the end of the conveying direction of the conveying means 1 stops the batch-shaped product sheet a conveyed by the conveying means 1 at a predetermined position on the first stage, and has a predetermined height. The flat plate 2 a is configured to be able to appear and retract in the vertical direction with respect to the transport surface of the transport means 1. The flattening operation of the flat plate 2a is performed by switching the air to the air cylinder 2b.

Rear end face aligning means 3 aligns the rear end face of the product sheet a whose stop position on the front side in the conveying direction is determined by abutting against the front stopper 2, and includes a belt conveyor 1a and a belt conveyor 1b constituting the conveying means 1. Of the batch-shaped product sheet a that protrudes above the conveying surface of the conveying means 1 after the product sheet a hits the front stopper 2 and stops moving. The rear end face is configured to be aligned.
Specifically, the alignment flat plate 3a, the air cylinder 3b for projecting the alignment flat plate 3a from the storage position below the conveying means 1 to the pressing operation position above the conveying means 1, the link mechanism 3c, and the conveying means 1 From the pressing air cylinder 3d for pressing the vertical alignment flat plate 3a protruding upward toward the rear end surface of the product sheet a to align the rear end surface, and further from the constituent members of the alignment flat plate 3a to the pressing air cylinder 3d. And a moving mechanism 11 that moves the unit in the conveyance direction according to a length dimension (for example, a minimum length of 420 mm to a maximum length of 750 mm) along the conveyance direction of the product sheet a.

  The moving mechanism 11 includes a screw mechanism 11a and a motor 11b that drives and rotates the screw shaft of the screw mechanism 11a. The moving plate 11 is a unit of the alignment flat plate 3a to the pressing air cylinder 3d that is a constituent member of the rear end face alignment means 3. Is fixed to a slider 11c screwed to the screw shaft via a bracket 11d. Accordingly, when the screw shaft is rotated by driving the motor 11b, the slider 11c that is screwed to the screw shaft and supported so as to slide in the axial direction is moved in the axial direction along the screw shaft, and the product sheet a It is possible to rotate up and down at a position that matches the size of.

  The batch-shaped product sheet a in which the front and rear end faces of the product sheet a are aligned on the conveying means 1 by the front stopper 2 and the rear end face aligning means 3 is lifted to a brushing position above the conveying means or lowered onto the conveying means after brushing. The product sheet elevating unit 4 includes a receiving plate 4a that supports lower portions of two opposite sides in the width direction orthogonal to the conveying direction of the product sheet a, a suspension support frame 4b that supports the receiving plate 4a so as to be vertically movable, Left and right end face alignment plates 4c for aligning the end faces in the width direction of the product sheet a supported on the receiving plate 4a, a batch pressing member 4d for pressing the uppermost part of the batch form product sheet, and a pair of opposite suspension support frames 4b And moving means 12 for moving the product sheet in the width direction of the product sheet according to the width dimension of the product sheet a (for example, the minimum width of 620 mm to the maximum width of 1300 mm). There.

  The moving means 12 includes guide means (for example, an LM guide or the like) 12a installed on the machine casing 30, a screw mechanism 12b, and a motor 12c that rotates the screw shaft of the screw mechanism 12b. A suspension support frame 4b is suspended and fixed to a slider 12d attached over the means 12a. And the receiving plate 4a is supported by the suspension support frame 4b through a guide means (for example, LM guide etc.) so that it can be moved up and down, and it is configured to move up and down by the air cylinder 13.

The left and right end face alignment plates 4c that are vertically supported on the receiving plate 4a are slidably supported in a direction in contact with the left and right end faces of the product sheet a, and are pressed against the end face of the product sheet a by the air cylinder 14. It is comprised so that.
The batch pressing member 4d is supported above the receiving plate 4a and is configured to press the uppermost portion of the batch-shaped product sheet with the air cylinder 15.
With the above configuration, the batch-shaped product sheet in which the front and rear ends of the product sheet a are aligned on the conveying means 1 has a lower part of two sides (left and right sides) orthogonal to the conveying direction of the product sheet a. 4 is supported by the receiving plate 4a, and the end surfaces of the sides (left and right side sides) are aligned by the left and right end surface alignment plates 4c and are crimped and sandwiched by the left and right end surface alignment plates 4c. Is pressed by the batch pressing member 4d. Thereby, the product sheet in the batch form is supported so as not to vary even if it is brushed by the brushing unit 5.

The brushing unit 5 includes a front brushing unit 5a that brushes the front end surface of the batch-shaped product sheet a, and a rear brushing unit 5b that brushes the rear end surface of the product sheet a.
The front and rear brushing units 5a and 5b are respectively composed of a brush 16, a biasing means 17 for pressing the brush 16 against the end surface of the product sheet with a predetermined pressure, and a brush pressed against the end surface of the product sheet a. Reciprocating means 18 for reciprocating vertically 16 along the end surface of the product sheet; and suction means 19 for sucking paper dust and thread-like debris peeled off when the brush 16 rubs the end surface of the product sheet a. It consists of

  The brushing unit 5 has a front brushing unit 5a disposed opposite to the front side of the product sheet a because the batch-type product sheets a to be brushed are aligned by the front stopper 2 with respect to the front side in the conveying direction. Is fixed at a fixed position, and the rear brushing unit 5b is supported by a moving means 20 so that the rear brushing unit 5b can be moved and adjusted along the length direction of the product sheet a according to the length dimension of the product sheet a.

The brush 16 is configured by arranging a plurality of brush groups 16 ′ in which a plurality of small block-shaped brushes 16 a (three or four in the illustrated example) are arranged in parallel. The length of the brush 16 formed by arranging the brush groups 16 'in parallel is set to a length that allows the maximum width of the product sheet used in the present apparatus.
In addition, the brush unit 16a constituting the brush group 16 'has a plurality of suction ports 22 in a substrate 21 on which brushes are implanted, and the substrate 21 having the suction ports 22 is provided via a frame 23 and a bush 24. The spring of the biasing means 17 is stretched over the frame 23 and the fixing member on the hollow guide shaft 25 side so as to be slidable in the axial direction with respect to the hollow guide shaft 25. Thereby, each brush group 16 'contacts according to the uneven | corrugated shape of the end surface of the product sheet a.

  The hollow guide shaft 25 is connected to a suction hose 19b connected to a blower 19a constituting a suction means 19, whereby a suction force is generated on the brush surface of the brush unit 16a, and the paper powder separated by brushing is removed. And filamentous waste is sucked and collected in a predetermined place.

Further, the brush group is supported by a reciprocating means 18 so as to reciprocate in a vertical direction within a predetermined range.
The reciprocating means 18 is composed of a guide member (for example, LM guide) 18a for guiding the brush group 16 ′ in the vertical direction and an air cylinder 18b as a driving source, and each brush group 16 ′ has an operating direction. It is controlled to alternate every other piece. Thereby, the side edge of the product sheet rubbed by the brush group 16 'is not bent because the upward force and the downward force cancel each other, and maintains the initial state (straight state).

  The moving means 20 for moving and adjusting the rear brushing unit 5b according to the length dimension of the product sheet includes a guide member (for example, LM guide) 20a and a screw mechanism 20b, and the screw shaft of the screw mechanism 20b is the motor 20c. It is comprised so that it may be driven and rotated. The rear brushing unit 5b is suspended and fixed to a slide member 20d extending over the guide member 20a and the screw shaft, and is configured to move in the length direction of the product sheet a by rotation of the screw shaft by the motor 20c. ing.

  Further, the rear brushing unit 5b is urged by an air cylinder 26 to press the brush 16 against the end surface of the product sheet a with an appropriate pressure. The reaction force side of the air cylinder 26 is moved by the guide member 20a by the operation of the screw mechanism, and the brushing unit is also moved along the guide member 20b. As a result, the brush 16 of the rear brushing unit 5b is pressed against the end surface of the product sheet a with an appropriate pressure. Although the front brushing unit 5a is fixed at a fixed position, the guide member 20a and the air cylinder 26 are used in the same manner as the rear brushing unit 5b in order to press the brush 16 against the end surface of the product sheet a with an appropriate pressure. The product sheet a is supported so as to be movable in the length direction.

  The second stage A2 disposed at the front position in the conveying direction of the product sheet a of the first stage A1 is supported by the product sheet lifting unit 4 on the two sides that are not brushed by the first stage A1, that is, the first stage 2. Conveying means for receiving the product sheet a after brushing of a set of two sides (front and rear sides) at the first stage A1 and conveying it to a predetermined position (brushing position) on the stage for brushing the sides (left and right sides) 6 and the front stopper 7 for stopping the movement of the product sheet a conveyed by the conveying means 6 and the rear end face aligning means 8 for aligning the rear end face of the product sheet a stopped to move by the front stopper 7 Since the configuration is the same as that of the conveying means 1, the front stopper 2, and the rear end face aligning means 3 arranged on the first stage A1, detailed description thereof is omitted.

In the second stage A2, brushing of two opposite sides (left and right sides) of the product sheet a is performed by attaching the front and rear end surfaces of the product sheet a on the conveying means 6 with the front stopper 7 and the rear end face aligning means 8. Since it is performed in a fixed state, the product sheet elevating unit 4 arranged on the first stage A1 is unnecessary, and the brushing unit 9 is arranged at a position corresponding to the side to be brushed (left and right side) (both sides in the width direction of the conveying means 6). Has been.
The brushing unit 9 includes a left brushing unit 9a that brushes the left side of the product sheet a and a right brushing unit 9b that brushes the right side of the product sheet a.
The left and right brushing units 9a and 9b are respectively similar to the brushing unit 5 of the first stage A1, and each of the brush 16 and the urging means for pressing the brush 16 against the end surface of the product sheet with a predetermined pressure. 17 and reciprocating means 18 for reciprocating the brush 16 pressed against the end face of the product sheet a up and down along the end face of the product sheet, and the brush 16 is peeled off by rubbing the end face of the product sheet a. And suction means 19 for sucking paper dust and thread waste. Detailed description is omitted because the structure is the same.

The left and right brushing units 9a and 9b are supported so as to be movable and adjustable in the width direction of the product sheet a according to the width dimension of the product sheet a.
The moving means 27 is configured by a combination of a guide member and a ball screw mechanism, similarly to the left-right width direction adjusting mechanism of the product seat lifting / lowering unit 4 in the first stage A1.

A batch receiver 28 that supports a substantially central position in the width direction of the product sheet a conveyed by the conveying means at a substantially central position in the width direction of the conveying means 1 and 6 of the first stage A1 and the second stage A2. Is arranged. Thereby, the substantially central portion in the width direction of the product sheet a is prevented from being bent downward by its own weight. The batch receiver 28 of the first stage A1 performs brushing at a position above the conveying means 1, so that the whole or a part of the batch receiver 28 can support the lower surface of the product sheet a lifted to the brushing position. It can be moved up and down by means such as lifting means.
The batch receiver 28 is composed of a free roller in order to reduce resistance when the product sheet a is conveyed.

Next, the operation of the above paper dust removing device will be described.
1. When the batch-type product sheets a placed on the entrance conveyor 10 are sent to the paper dust removing device A in the same posture (horizontal state), the product sheet a is transported forward by the operation of the transport means 1 of the first stage A1. Is done. Since the front stopper 2 disposed in front of the conveying device 1 protrudes upward from the conveying surface of the conveying means 1, the front end surface of the product sheet a abuts against the front stopper 2, and the conveyance is stopped, and then the rear The end face aligning means 3 operates to align the rear end face of the product sheet a.
2. Next, the product sheet elevating / lowering unit 4 descends and descends to a position where the receiving plate 4a of the unit 4 is below the lowermost part of the product sheet a. ) To align the left and right end surfaces of the product sheet a with the receiving plate 4a and the left and right end surface alignment plates 4c. Further, after aligning the left and right end surfaces, the batch pressing member 4d is lowered to restrain the batch form, and the product sheet elevating unit 4 is lifted to a predetermined height above the conveying means 1 in that state, and the product sheet a is brushed. Lift up.
3. The front brushing unit 5 a is pressed against the front side of the product sheet a by the operation of the air cylinder 26, and the pressure applied to the end surface of the product sheet a of the brush 16 depends on the tension of the spring of the urging means 17. Similarly, the back brushing unit 5b is similarly pressed against the rear side of the batch-shaped product sheet a by a mechanism. Thereby, the brushes 16 of the front / rear brushing units 5a and 5b are arranged unevenly along the shape of the front side and the rear side of the product sheet a.
4). The brush group 16 'constituting the brush 16 reciprocates up and down within a predetermined range by switching the supply of air to the air cylinder 18b of the reciprocating means 18, and brushes the front and rear end surfaces of the product sheet a. At this time, the brush group 16 ′ constituting the brush 16 is controlled so that the adjacent brush group reciprocates in the opposite direction, so that the brushed side of the product sheet a is not bent. And at the time of brushing, the paper powder and thread-like waste which peeled from the product sheet a are attracted | sucked with the suction force which acts on the suction inlet 22 provided in the brush.
5). After brushing for a predetermined time, the front and rear brushing units 5a and 5b are separated from the front and rear sides of the product sheet a, and the product sheet elevating unit 4 is lowered to place the product sheet a on the conveying means 1.
6). The conveying means 1 operates to feed the product sheet a into the conveying means 6 of the second stage A2. The conveying means 6 that has received the product sheet a conveys the product sheet a to a predetermined position by driving the conveying means 6, stops the product sheet a at the predetermined position by the action of the front stopper 7 and the rear end surface aligning means 8, and The front stopper 7 and the rear end face aligning means 8 are clamped and restrained so that the ends are aligned and the batch sheets aligned during brushing are not disturbed.
7). The left and right brushing units 9a and 9b are moved to the left and right sides of the product sheet a in the same manner as described above, and the brush 16 is pressed against the left and right end surfaces of the product sheet a and brushed.
8). After the predetermined time of brushing, the left and right brushing units 9a and 9b are separated from the product sheet a, and then the front stopper 7 and the rear end face aligning means 8 which restrained the batch-shaped product sheet a are released, and paper dust is removed. The product sheet a having been completed is discharged from the paper dust removing device A onto the conveyor 29 arranged outside the device by driving the conveying means 6.

The paper dust removing apparatus of the present invention is not limited to the illustrated embodiment, and can be changed without changing the gist of the present invention.
(1) In the illustrated embodiment, a mechanism for brushing the front and rear end surfaces of the product sheet along the conveyance direction at a position higher than the conveyance means is provided on the first stage, and the product sheet is arranged on the second stage. Although a mechanism for brushing the left and right end surfaces of the toner on the conveying means is arranged, it may be arranged in reverse.
(2) The means for pressing the brushes on the product sheet in the front / rear brushing units 5a, 5b and the left / right brushing units 9a, 9b is not limited to the illustrated air cylinder but may be a motor.
(3) One batch receiver arranged in the width direction of the conveying means is arranged at a substantially central position in the width direction of the conveying means, but a plurality of batch receivers may be arranged in parallel in the width direction.
(4) Although the brush which comprises a brushing unit is comprised as a unit the brush group which assembled the brush single unit in parallel, it is good also considering the brush single body itself as the magnitude | size of this brush group.

The front view which shows the whole structure of the paper dust removal apparatus which concerns on this invention. FIG. The same side view. The enlarged view of a conveyance means and a rear-end surface alignment means. It is an enlarged view which shows the brush part of a brushing unit, (a) is a front view of a brush group, (b) is a vertical side view.

Explanation of symbols

DESCRIPTION OF SYMBOLS A ... Paper dust removal apparatus A1 ... 1st stage A2 ... 2nd stage a ... Batch form product sheet 1, 6 ... Conveyance means 2, 7 ... Front stopper 3, 8 ... Rear end surface alignment means 4 ... Product sheet raising / lowering unit 5 , 9 ... Brushing unit 16 ... Brush 17 ... Biasing means (spring) 19 ... Suction means 22 ... Suction port 28 ... Batch receiver

Claims (4)

A paper dust removing device that removes paper dust adhering to a product sheet punched out of corrugated paper or paperboard,
In the batch form in which the product sheets are horizontally stacked, the two opposite sides of the four sides of the product sheet are set as one set, and two stages are separately brushed.
One stage is
Transport means for transporting batch-form product sheets to a predetermined position;
A front stopper protruding and retracting with respect to the conveying surface of the conveying means on the downstream side in the conveying direction of the conveying means, a rear end face aligning means for aligning the rear end face in the conveying direction of the product sheet,
A product sheet lifting unit for lifting / lowering the aligned product sheets to a brushing position above the conveying means;
A brushing unit that brushes the outer peripheral surfaces of two opposing sides other than the sides supported by the lifting unit to remove paper dust;
Another stage is
Conveying means for conveying the product sheet to a predetermined position;
A front stopper that protrudes and appears with respect to the conveying surface of the conveying means on the downstream side in the conveying direction of the conveying means;
Rear end face alignment means for aligning the rear end face of the product sheet in the conveying direction and restraining the batch form of the product sheets so as not to be disturbed during brushing;
A brushing unit that brushes the outer peripheral surfaces of two opposing sides other than the sides supported by the front stopper and the rear end face alignment means, and removes paper dust;
A paper dust removing device comprising:   The two brushing units in the two stages are arranged in parallel with the small block-shaped brushes facing the sides of the product sheet, and each brush unit is biased by a biasing means in a direction in contact with the end surface of the product sheet; 2. The paper dust removing device according to claim 1, wherein the paper dust removing device is supported so as to be slidable back and forth in the vertical direction.   3. The paper dust removing device according to claim 2, wherein each brush unit of both brushing units has a suction port of suction means formed in the brush.   The paper dust removing device according to any one of claims 1 to 3, wherein a batch receiver for supporting a lower surface of a batch-shaped product sheet is arranged on each of the stages.

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