JP4791294B2 - Paper dust removal device - Google Patents

Description

  The present invention relates to a paper dust removing device. More specifically, the present invention relates to a paper dust which removes paper dust, thread-like waste, paper fragments, etc., which are generated when punched and formed in a box shape and various shapes on corrugated cardboard or paperboard. The present invention relates to a paper dust removing device that is installed in a sheet carry-in portion of a paper piece removing device and cleans an end surface on the front side in the conveying direction of a batch-type product sheet that is carried in a horizontally stacked state.

An assembly box made of corrugated cardboard or paperboard is formed by punching out a developed shape of a product from rectangular corrugated cardboard or paperboard.
The punching is performed by a flat punching die in which a punching blade (straight blade, wave blade) is implanted in a base plate, or a cylindrical punching die in which a punching blade (straight blade, wave blade) is implanted in a semi-cylindrical plywood. However, if the same operation is repeated, the cutting edge of the punching blade implanted and fixed in the punching die is worn and becomes a flat surface. When punching with the worn punching blade, the product is punched by surface cutting, and paper dust and paper thread scraps are generated on the cut surface. Then, paper dust and paper thread scraps adhere to the outer peripheral edge of the product to be punched out (outside edge, hole edge, groove edge, etc. of the product) due to static electricity. In addition, even if the paper dust and paper thread-like waste are separated into the product and surrounding waste by a stripping device (dropping waste dropping) in the next step of the punching process, it remains attached to the outer peripheral edge of the product sheet. Become.

  By the way, paper dust and paper thread scraps adhering to the outer peripheral edge of the punched product significantly reduce the product value, and when the punched product is put on an automatic box making machine, paper dust and paper thread scraps are driven. There is a problem that a trouble occurs due to entering a department or the like. In particular, recently, mixing of paper dust, filamentous waste, paper pieces, and the like in cardboard cases has become a problem.

Therefore, in the past, product sheets to be transported after stripping (for example, 1 batch: 25 sheets or 50 sheets stacked) are manually sandwiched between product sheets by pulling them apart one by one. Paper dust, thread waste, and paper pieces are dropped and stacked on a pallet, and the outer periphery of the stacked product is rubbed with a brush or mop to adhere to the outer periphery of the product sheet, paper thread Debris is removed.
Recently, instead of the above-mentioned manual work, an apparatus that is automatically performed by a machine has been proposed (for example, see Patent Document 1).

  The paper dust removing device for corrugated board described in Patent Document 1 includes a first belt conveyor that moves a block (batch form) in which a large number of corrugated board is stacked in a lateral orientation to the conveying direction side, A reversing conveyer in which a number of conveying vanes that crawl up the block in the horizontal orientation at a position that does not interfere with one belt conveyor are installed in the circumferential direction, and the conveying vanes in the horizontal transfer process of the reversing conveyer A paper roll removing brush roll that contacts the upper surface and both side surfaces of the block conveyed in a vertical posture while rotating, an air jet provided corresponding to the paper powder removing brush roll, and a paper powder suction nozzle; A second belt conveyor that receives the block that is supported by the conveying-side blades of the reversing conveyance conveyor and is again in a horizontal horizontal posture at the end, and is unloaded from the second belt conveyor. It is composed of a discharge conveyor or the like to receive that block.

  And, in the carry-in section that supplies the block to the paper dust removing device in the horizontal stacking posture, the lower surface of the block that is difficult to brush against the vertical block by the reverse conveying conveyor in the subsequent stage (the front in the conveyance direction in the horizontal stacking posture), It is equipped with a brushing device before converting to a vertical position. That is, at the front position in the conveying direction of the supply conveyor that conveys a block in which a large number of corrugated boards are stacked in a horizontal orientation, the block stopper that can be moved in and out on the surface of the supply conveyor is stopped by the stopper. The front paper dust removing brush roll supported on the front side of the block in rotation in contact with the front surface of the block so as to move up and down, and the block brushed by the front paper dust removing brush roll And a first belt conveyor that moves the belt toward the conveyance direction.

And the block which piled up the corrugated board by the said structure contact | abuts to the stopper protruded on the conveyance path, and is stopped, and the irregularity of the conveyance direction front surface of a block is corrected and aligned. When the block alignment is completed, the stopper descends below the conveyance path surface, and then the front paper dust removal brush roll descends while rotating, rubbing the front of the block in the conveyance direction, and adhering to the front surface of the block And thread-like waste.
However, the outer peripheral edge of the punched corrugated board is not a straight surface, but a flap is defined by cutting or the like. As a result, the outer peripheral edge is an uneven surface. Therefore, when rubbing with a brush roll for removing the front paper powder having a uniform outer diameter, the tip of the roll brush does not come into contact with the deep part of the recess or the cut part, and the paper powder adhering to that part is removed. Without being attached, it is sent to the next process.

  In order to solve the above paper powder removal failure, it is conceivable to lengthen the hair of the brush roll. In that case, the brush roll is forcibly moved by one long axis. On the convex surface portion close to, the root side of the hair hits strongly and breaks, causing a problem that the peripheral edge of the corrugated board is rubbed strongly to make the surface rough.

JP 2003-164812 A

  The present invention has been made in view of the above-described problems of the prior art, and even if the outer peripheral edge of the punched product sheet has irregularities or cuts, it adheres to the portion without damaging the outer peripheral edge. An object of the present invention is to provide an apparatus capable of reliably removing paper dust and the like.

In order to achieve the above object, the paper dust removing apparatus of the present invention aligns the front end surface in the transport direction of the batch-form punched product sheets carried in a horizontally laminated state, and brushes the aligned front end surface to make paper dust. Is a paper dust removing device that removes a batch of punched product sheets, a front stopper that can be moved up and down at the front end of the conveying direction of the conveying means, and an upper portion of the front stopper. Further, a fixed brush and a movable brush project from the surface of the front stopper toward the punched product sheet, and the movable brush is supported on a support frame to which the front stopper is fixed so as to be able to swing vertically. And
When the front end of the batch direction punched product sheet in the conveyance direction is brought into contact with the front stopper and the unevenness is adjusted, the outer peripheral edge in the direction perpendicular to the conveyance direction of the product sheet and the outer peripheral edge facing in the opposite direction to the conveyance direction are also present. Alternatively, it may be aligned with a stopper arranged separately.
The fixed brush may be a flat brush in which hairs are planted on a base plate, or a roll brush in which hairs are radially planted on the outer peripheral surface of the cylindrical body.
The movable brush is preferably a flat brush having hairs planted on a base plate.
Further, the hair of the fixed brush and the movable brush may be the same, but the movable brush is preferably thinner and softer than the hair of the fixed brush because the movable brush enters the cut portion and removes adhering matter.

  The fixed brush and the movable brush are arranged such that the fixed brush and the movable brush are brought into contact with the front end surface of the punched product sheet in this order by lowering the front stopper, and the tip of the movable brush is arranged on the fixed brush. It is preferable to project from the hair end to the punched product sheet side.

  Further, the movable brush is configured such that small brush members are juxtaposed along the width direction of the product sheet, and each brush member is elastically oscillated in the vertical direction independently.

As a specific mounting structure of the movable brush, a brush member base is pivotally supported on a bearing on a support frame, and the brush tip is urged in a direction in contact with the product sheet. Further, each brush member is configured so that the rotation in the direction away from the product sheet is restricted to a certain range by the stopper.
The biasing means is configured by tensioning a tension spring across the brush member and the support frame.

According to the above means, the punched product sheet in a batch form in which the front end surface in the conveyance direction is in contact with the front stopper is exposed as the front stopper descends below the conveyance path surface. The exposed front end face is brushed in the order of a fixed brush and a movable brush moving downward. Thereby, the front side end surface with the unevenness of the product sheet and the cut portion that has entered deeply into the product sheet from the end surface can be reliably cleaned with the brush.
Since the movable brush is supported so as to be able to elastically swing up and down with respect to the frame, when the reaction force acting on the movable brush exceeds a predetermined value (spring force of the urging means), the movable brush is batch-processed. With the punched product sheet in the form, it is pushed upward and the action of the movable brush to forcefully clean the product sheet is released. Therefore, there is no worry of damaging the product sheet by brush cleaning.
In addition, since the movable brushes are arranged in parallel with the small brush members and each brush member is configured to be elastically oscillated in the vertical direction, the small brush members are uneven in the corresponding portions of the product sheet. Therefore, paper dust can be removed accurately without damaging the product sheet.

According to the paper dust removing device of the present invention, the configuration according to claims 1 and 2 ensures that the front end surface with unevenness and the notched portion that has entered the product sheet from the end surface are obtained without damaging the end surface of the product sheet. Paper dust can be removed by brush cleaning.
Further, according to the configuration of claims 3, 4 and 5, each brush member with a small width responds immediately to the unevenness of the corresponding part of the product sheet, so that paper dust can be removed accurately without damaging the product sheet. it can.

Hereinafter, an example of the implementation of the paper dust removing apparatus according to the present invention will be described with reference to the drawings.
FIG. 1 is a schematic view in which a paper dust removing device according to the present invention is arranged in a product sheet carry-in portion of a paper dust / trim removing device, and punched product sheets a batch-delivered from a punching machine (not shown) At the same time as the removing device A is transferred to the received paper dust / trim removing device B, paper dust adhering to the front end surface of the product sheet is removed.
The paper dust / trim removing device B for removing the paper dust and trim of the product sheet a carried out in a horizontal state from the paper dust removing device A is an upright conveying means B1 for conveying the product sheet by converting it into an upright state, and its upright conveying. Separating means B2 arranged in the first half of means B1 for separating the conveyed product sheets one by one, and paper dust adhering to the front and back surfaces of the product sheet by blowing air to the separated punched product sheets Air blowing means B3 to be removed, paper dust removing means B4 for aligning the product sheets separated one by one, and removing paper dust and the like adhering to the left and right side surfaces and the upper side surface of the aligned and laminated product sheets; The product sheet from which the paper dust and the like have been removed is converted into a horizontally laminated state and carried out, and is composed of final makeup means B5 for removing the paper dust on the left and right end faces and the front and rear end faces of the product sheet in the middle of the carrying out, Paper dust removal Part of the leaving device A to final makeup means B5 are accommodated in the case 1.

The paper dust removing device A is configured such that the product sheets a batch-delivered from the punching machine have a width direction both side surfaces (both side surfaces orthogonal to the transport direction) and a rear end surface (transport direction) with reference to the front side (front end surface) in the transport direction. The surface opposite to the surface), and the aligned front end surface is rubbed with a brush to remove the paper dust, and sent to the conveying conveyor of the standing conveying means B1 of the paper dust / trim removing device B located on the downstream side. is there.
The paper dust removing device A has a front stopper which is disposed between the belt conveyor 2 and the end of the belt conveyor 2 and the start end side of the upright conveying means B1 disposed on the downstream side thereof, and is movable up and down. 3, a fixed brush 4, a movable brush 5 that swings up and down, left and right alignment plates 6 and 6 'that are arranged outside the belt conveyor 2 and are slidable in the width direction, and are fed onto the belt conveyor 2 And a rear alignment plate 7 for pressing and aligning the rear side of the punched product sheet a.

  The belt conveyor 2 is constituted by arranging a plurality of small endless belts 2a (two in the drawing) in parallel along the width direction of the product sheet, and the endless belt 2a is in the conveying direction of the product sheet a. According to the width in the direction orthogonal to the width direction. When three endless belts are disposed, the endless belt disposed in the middle is fixed so as not to move in the width direction, and the endless belts disposed on both sides are configured to be movable in the width direction.

  The left and right alignment plates 6 and 6 ′ arranged on the outer side in the width direction of the belt conveyor 2 are moved and adjusted in the width direction according to the width dimension of the product sheet a (width dimension in the direction orthogonal to the conveyance direction), The batch form product sheets a can be aligned. As a means for moving the left and right alignment plates 6, 6 ', an air cylinder or a ball screw mechanism can be used.

Further, the rear alignment plate 7 disposed between the endless belts 2a of the belt conveyor 2 is disposed below the conveying surface of the belt conveyor 2, and is configured to turn up and down by the operation of the air cylinder 8. And is configured to be movable and adjusted in accordance with the dimension of the product sheet a (the length dimension along the conveying direction).
Thereby, the rear alignment plate 7 is kept in a horizontal state at a position below the conveying surface of the belt conveyor 2 until the batch-shaped punched product sheets a are conveyed to the position where the belt conveyor 2 contacts the front stopper 3. After holding the front stopper 3 and the front side (front end surface) of the punched product sheet a in the conveying direction, it is rotated upward from the horizontal state to push the rear end surface of the punched product sheet a to correct the unevenness. .

  The front stopper 3, the fixed brush 4, and the movable brush 5 are attached to a support frame 10 that is moved up and down by an air cylinder 9, and are installed inside a carry-in port 11 opened on one side of the case 1. The belt conveyor 2 is horizontally installed outside the case 1 with its end side close to the carry-in entrance 11.

  The support frame 10 is composed of a square steel material, and is vertically moved up and down via guide means 13 including a guide rail 13a and a slider 13b on support columns 12 and 12 'whose both longitudinal sides are fixed upright on both sides of the carry-in entrance 11. It is supported horizontally. The rod end of the air cylinder 9 is connected and fixed to the support frame 10, and the main body of the air cylinder 9 is fixed to a fixing member (case 1 in the drawing). Thereby, the support frame 10 is moved up and down along the support column by the operation of the air cylinder 9.

  A front stopper 3 formed of a metal flat plate is vertically fixed and fixed to the rear side surface of the support frame 10 (the surface facing the end side of the belt conveyor 2), and a right angle at the upper end of the front stopper 3 A fixed brush 4 is attached to the upper surface of the horizontally bent horizontal piece 3a, and a movable brush 5 is mounted on the upper surface of the support frame 10 via a bearing 15 so as to be able to swing up and down with respect to the fixed brush. It has been.

  The fixed brush 4 is a flat brush in which bristles 4b are implanted in the base plate 4a, and the length in the width direction is the same as the maximum width of the product sheet so that it can correspond to the maximum width product sheet supplied to the apparatus. It is formed longer or longer. The length of the bristles 4b to be planted on the base plate 4a is a length that slightly protrudes from the surface of the front stopper 3 toward the rear (the product sheet side that comes into contact with the front stopper). It should be noted that the base plate may be either a single long plate or a configuration in which a large number of small brushes having hairs planted on a small base plate are arranged in parallel. Moreover, although the hair 4b may be made of pork hair, in order to further improve the paper dust removal rate, resin-made wear-resistant / conductive hair (brush) is employed.

Like the fixed brush 4, the movable brush 5 is a flat brush in which bristles 5b are planted on a base plate 5a. The base plate 5a is configured to have a small width, and an attachment piece 5c is integrally fixed to the base of the base plate 5a. The mounting piece 5c is supported on a shaft 17 supported horizontally on a bearing 16 fixed to the upper surface of the support frame 10 so as to be vertically rotatable at a predetermined interval in the axial direction.
The interval at which the movable brush 5 is attached to the shaft 17 is such that when the tip of the movable brush comes into contact with the end face of the product sheet, the tip of the movable brush 5 spreads in a trumpet shape in the width direction. The tips of the hairs are spread in a trumpet shape and overlap each other, and are attached at intervals that do not cause unbrushed portions.
Further, the length of the hair to be planted on the base plate 5a is a length that protrudes further in the direction of the product sheet from the tip of the fixed brush 4, and thereby the cut formed in the product from the outer peripheral edge of the product sheet. The tip of the brush also enters the part, so that it can be reliably cleaned.
The material of the bristles 5b may be pork hair as in the case of the fixed brush 4, but in the case of further improving the paper dust removal rate, resin-made wear-resistant and conductive bristles (brushes) are employed.

A stopper 18 for restricting the rotational range of the movable brush 5 to a certain range is disposed around the mounting piece 5c of the movable brush 5, and the movable brush rotated upward away from the product sheet a is placed on the product sheet. A biasing means 19 for biasing in the direction of the initial position in contact with a is stretched across the support frame 10 and the mounting piece 5c. As the urging means 19, a tension coil spring is used. The initial position of the movable brush 5 (the position where the bristles of the brush are horizontal) is a position determined by the peripheral surface of the mounting piece 5c hitting the stopper 18.
That is, a plurality of movable brushes 5 are arranged in parallel on the shaft 17 in a skewered manner, and are configured to have the same width as the fixed brush 4, and each movable brush 5 is individually and independently according to the unevenness of the end surface of the product sheet a. Swing up and down to clean the end face. Each so-called movable brush, like a piano keyboard, swings up and down according to the unevenness of the end face of the corresponding product sheet, and performs brush cleaning accurately.

  The product sheet in the batch form after the paper dust removal on the front end surface along the transport direction is completed by the paper dust removing device A adheres to the remaining three peripheral surfaces (both side end surfaces in the width direction orthogonal to the transport direction, the rear end surface). In order to remove the paper dust / filamentous waste, the front and back surfaces of the sheet, the paper dust sandwiched between the sheets, the paper piece, etc., the posture is changed to an upright state and conveyed. The conversion of the posture is performed by the upright conveying means B1 disposed close to the downstream side of the paper dust removing apparatus A. Since the paper dust / trim removing device B is not directly related to the present invention, the description thereof is omitted.

In the paper dust removing device of the present invention, the product sheet a placed on the belt conveyor 2 in a batch form with the above configuration is conveyed by the driving of the belt conveyor 2 and comes into contact with the front stopper 3 protruding on the conveyance path. The front ends are aligned, and the left and right alignment plates 6 and 6 ′ and the rear alignment plate 7 disposed on both sides in the width direction of the transport path are operated to align the width direction both sides and the rear end surface opposite to the transport direction. When the batch-type product sheets are aligned, the support frame 10 to which the front stopper 3 is fixed is lowered by the air cylinder 9, thereby moving with the fixed brush 4 fixed on the support frame 10. The brush 5 also starts to descend together.
When the support frame 10 is lowered, the fixed brush 4 first rubs against the front end surface of the product sheet a to remove paper dust, and then the movable brush 5 disposed above the fixed brush 4 rubs the front end surface. To do. Since the movable brush 5 has a hair length longer than that of the fixed brush, the hair can enter and rub into a cut portion that cannot be rubbed with the fixed brush 4, and can reliably remove paper dust and the like. it can. Moreover, since the movable brush 5 has a structure in which the entire length in the width direction is not a single one like the fixed brush 4 and the small width brush independently swings up and down, each of the movable brushes 5 corresponds to the front end surface of the product sheet a. The movable brush 5 swings up and down. Accordingly, it can operate more accurately than a movable brush having a single length in the width direction, and paper dust can be removed.

  By placing the device of the present invention between the punching machine and the paper dust / trim removal device, the product sheets discharged from the punching air and made into a batch form are continuously carried into the paper dust / trim removal device. Paper dust removal can be automated.

Schematic which shows embodiment which has arrange | positioned the paper dust removal apparatus which concerns on this invention in the product sheet carrying-in side of a paper dust and trim removal apparatus. (A) is an enlarged front view which shows a paper dust removal apparatus part, (b) is an enlarged view of the principal part. The top view of Fig.2 (a). (A) is an expanded sectional view of a fixed brush and a movable brush part, (b) is a perspective view which shows a movable brush part. Operation | movement explanatory drawing which shows the state which cleans the end surface of the product sheet by a fixed brush and a movable brush.

Explanation of symbols

A ... Paper dust removing device 2 ... Belt conveyor 3 ... Front stopper 4 ... Fixed brush 5 ... Moving brush 10 ... Support frame 18 ... Stopper 19 ... Biasing means

Claims (2)

A paper dust removing device that aligns the front end face of a batch-form punched product sheet carried in a horizontally laminated state and brushes the aligned front end face to remove paper dust,
Conveying means for conveying the punched product sheet in a batch form, a front stopper that can be moved up and down at the front end of the conveying direction of the conveying means, and a punched product sheet side from the surface of the front stopper above the front stopper The fixed brush and the movable brush are arranged so as to protrude toward the front, and the fixed brush and the movable brush are arranged so as to contact the front end surface of the punched product sheet in the order of the fixed brush and the movable brush by lowering the front stopper, and The tip of the movable brush protrudes from the tip of the fixed brush toward the punched product sheet,
The movable brush has juxtaposed brush members with a small width along the width direction of the product sheet, and each brush member independently swings up and down,
The movable brush further includes a biasing means that pivotally supports the base of the brush member on a bearing on the support frame and biases the brush tip in a direction in contact with the product sheet. The paper dust removing device is characterized in that each brush member is restricted within a certain range by a stopper in a direction away from the product sheet . It said biasing means, paper dust removing device according to claim 1, wherein is configured by stretched a tension spring over the brush member supporting frame.

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