WO2011158613A1 - Paper surface smoothing device for paper making machine - Google Patents
Paper surface smoothing device for paper making machine Download PDFInfo
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- WO2011158613A1 WO2011158613A1 PCT/JP2011/061796 JP2011061796W WO2011158613A1 WO 2011158613 A1 WO2011158613 A1 WO 2011158613A1 JP 2011061796 W JP2011061796 W JP 2011061796W WO 2011158613 A1 WO2011158613 A1 WO 2011158613A1
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- paper
- wet paper
- press
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- wet
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21G—CALENDERS; ACCESSORIES FOR PAPER-MAKING MACHINES
- D21G1/00—Calenders; Smoothing apparatus
- D21G1/002—Opening or closing mechanisms; Regulating the pressure
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- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F3/00—Press section of machines for making continuous webs of paper
- D21F3/02—Wet presses
- D21F3/08—Pressure rolls
Definitions
- the present invention relates to a paper surface smoothing device for a paper machine, and relates to a technique for producing paper from recycled pulp obtained by breaking up used paper.
- a papermaking method performed in a general paper mill includes a pulp process, a papermaking process, and a finishing process.
- a used paper pulp process is added.
- the product paper is processed through the wire part, press part, dryer part, calendar part and coater part of the paper machine.
- the prepared (regenerated) pulp is placed on a paper making net (wire) and dehydrated to make paper, and in the press part, the moisture in the wet paper containing a large amount of moisture from the wire part is removed.
- the dryer part the paper is dried through a dryer heated with steam, in the calendar part, the paper surface is smoothed between the rolls, and in the coater part, the base paper is coated with paint.
- the used paper recycling apparatus described in Japanese Patent Publication No. 2007-84967 discloses a pulp manufacturing section that dissects and beats used paper to produce used paper pulp, and paper making used paper pulp manufactured by the pulp manufacturing section.
- the heating and drying unit includes a heater plate disposed in the middle of the travel route as a heating unit, and the heater plate indirectly heats and wets the wet paper on the smooth endless belt.
- the smooth surface finishing roll for calendar is arranged in parallel facing the heater plate, and both smooth surface finishing rolls sequentially roll the wet paper on the smooth surface endless belt. Press to finish the wet paper to an appropriate smooth surface.
- the calendar part of a general paper mill performs high pressure on paper that has been dried after paper making, and uses mechanical parts that can withstand high pressure.
- the provision of a high-pressure calendar part in a small papermaking machine has a problem in durability and increases the cost of the apparatus.
- Patent Document 1 there is a paper that performs calendar processing on wet paper in the middle of drying.
- the wet paper is wound around the press roller, or a fiber flow in which the fibers in the wet paper move is generated, and the wet paper is damaged.
- the present invention solves the above-described problems, and provides a paper surface smoothing device for a paper machine that can prevent wet paper wrapping and generation of fiber flow and can finally perform calendering at a predetermined pressure.
- the purpose is to provide.
- a paper surface smoothing device for a paper machine includes a transport belt that transports wet paper placed on a transport surface, a sensor that detects passage of the wet paper web tip, A calender unit having a press roller that is displaceable between a press position for sandwiching the wet paper with the conveyance belt and a retracted position away from the wet paper according to the output value is provided.
- a paper surface smoothing device for a paper machine includes a transport belt that transports wet paper on a transport surface, a drying roller that heats the wet paper via the transport belt, and a transport direction of the transport belt. And a plurality of calendar portions arranged at a plurality of locations including a position facing the drying roller, each calendar portion having a press roller for sandwiching the wet paper with the conveying belt, and the arrangement position of the calendar portion is conveyed. It is characterized in that the press pressure of the press roller is set higher as it is further downstream in the belt conveying direction.
- the senor is arranged downstream in the transport direction from the calendar unit, and the calender unit arranges the press roller at the press position when the sensor detects passage of the wet paper web front end. It is characterized by doing.
- the senor is arranged on the upstream side in the transport direction from the calendar unit, and the calender unit detects the passage of the tip of the wet paper and the press roller is passed after a predetermined time has passed. It arrange
- the press pressure of each calendar section is set according to the moisture content of the wet paper at the position where each calendar section corresponds to the wet paper.
- the paper surface smoothing device of the paper machine of the present invention includes a conveyor belt that carries wet paper on a conveyor surface and conveys, a detection unit that detects the start and stop of a supply pump that supplies pulp onto the conveyor belt, It has a calender part having a press roller that can be displaced over a pressing position for sandwiching the wet paper with the conveying belt and a retracting position away from the wet paper, and the calender part is detected by the detection means when the supply pump is activated.
- the press roller is arranged at the press position after a lapse of time.
- the press roller by detecting the passage of the leading end of the wet paper with the sensor and displacing the press roller to the press position, the press roller is pressed against the wet paper from the middle position of the wet paper on the conveyor belt. Press the wet paper. For this reason, it is possible to prevent the press roller from involving the tip of the wet paper, and it is possible to perform paper surface smoothing processing, that is, calendar processing at the wet paper stage.
- the press roller comes into contact with the wet paper having a high water content at a low pressure, and the drying roller The wet paper whose moisture content has been reduced by drying by pressing is pressed by a press roller at high pressure. For this reason, it is possible to prevent the wet paper having a high moisture content from being wound around the press roller, and to prevent the movement of the fibers in the wet paper caused by pressing the wet paper having a high water content at a high pressure. Paper surface smoothing, that is, calendaring can be performed at the wet paper stage while suppressing damage to the paper.
- FIG. 1 Schematic diagram showing a paper surface smoothing device of a paper machine in an embodiment of the present invention
- the perspective view which shows the evacuation position of the calendar part of the paper surface smoothing apparatus in the embodiment
- the principal part enlarged view which shows the retreat position of the calendar part of the paper surface smoothing apparatus in the embodiment
- the perspective view which shows the press position of the calender part of the paper surface smoothing apparatus in the embodiment
- the principal part enlarged view which shows the press position of the calender part of the paper surface smoothing apparatus in the embodiment
- a used paper processing apparatus which is a paper machine, includes a paper making unit 1, a dewatering unit 2, a drying unit 3, and a calendar unit 4, and although not shown, the used paper is separated and recycled.
- a recycled pulp section for preparing pulp and a deinking pulp section for preparing deinked pulp by separating foreign matters such as ink and toner from fibers are prepared, and recycled paper is prepared from used paper.
- the paper making unit 1 is a unit that makes deinked pulp and prepares (recycles) recycled paper, and includes a head box 11 and a wire unit 12.
- the wire portion 12 has a mesh belt 123 stretched over both rollers 121 and an intermediate roller 122, and the mesh belt 123 forms an endless track.
- a liquid containing deinked pulp including deinked pulp is uniformly ejected from the head box 11 to the mesh belt 123, and wet paper 124 forming a fiber layer is formed by draining with the mesh belt 123.
- the dewatering unit 2 has a water absorbent belt 22 made of felt that is stretched between a plurality of rollers 21, transfers the wet paper 124 from the mesh belt 123 to the water absorbent belt 22, and absorbs water with the water absorbent belt 22 to dehydrate it.
- the press portion 23 is formed on the conveyance track of the water absorption belt 22.
- the press unit 23 presses and dehydrates the wet paper 124 sandwiched between the water absorbing belt 22 and the lower conveyance belt 33 of the drying unit 3 described later between the roller 21 and a roller 31 of the drying unit 3 described later.
- the wet paper 124 that has passed through the press unit 23 is transferred from the water absorption belt 22 to the lower conveyance belt 33.
- the drying unit 3 has a steel lower conveyance belt 33 spanned between a plurality of rollers 31 and a drying roller 32 provided with a heater therein, and a net-like shape spanned between the plurality of rollers 34 and the drying roller 32.
- the upper transport belt 35 is made of resin, and the lower transport belt 33 and the upper transport belt 35 overlap on the surface of the drying roller 32 with the wet paper 124 interposed therebetween, and press the dry roller 32 to dry the wet paper 124. Is.
- the calendar unit 4 is arranged at a plurality of locations along the conveyance direction of the lower conveyance belt 33, and at least one is arranged at a position facing the drying roller 32.
- Each calendar unit 4 includes a press roller 41 that sandwiches the wet paper 124 between the lower transport belt 33 and a press position that contacts the wet paper 124 and a retracted position that is separated from the wet paper 124.
- the press roller 41 faces the counter roller 40
- the press roller 41 faces the drying roller 32.
- the calendar portion 4 holds both ends of the rotation shaft of the press roller 41 so as to be rotatable by bearing blocks 42, and the side plate 43 has a hole 44 having a long shape in the vertical direction.
- the bearing block 42 is held so as to be movable up and down, and an urging body disposed in the hole 44, here, a spring 45 presses the bearing block 42 downward.
- Both side plates 43 are connected to a drive unit 47 via hanger plates 46, respectively.
- the drive unit 47 includes a drive shaft 48 that is rotatably held by the apparatus main body, and includes fixed plates 49 and 50 fixed to the apparatus main body.
- the motor 51 that is a drive device is provided on one fixed plate 49, and the other A position detection sensor 52 is provided on the fixed plate 50.
- the pinion gear 53 provided on the motor 51 meshes with a driven gear 54 provided on one end side of the drive shaft 48.
- a light shielding plate 55 of the position detection sensor 52 is provided on the other end side of the drive shaft 48, and the light shielding plate 55 transmits light between the light emitting portion 52 a and the light receiving portion 52 b of the position detection sensor 52 as the drive shaft 48 rotates. It rotates over a light blocking position that blocks the shaft and a retracted position that is spaced from the optical axis.
- Eccentric blocks 56 are provided at both ends of the drive shaft 48, and the hanger plate 46 is pivotally attached to the eccentric position of the eccentric block 56, that is, at a position away from the rotational axis of the drive shaft 48 with screws 57. Yes.
- the hanger plate 46 is connected to the side plate 43 by screws 59 inserted through holes 58 that are long in the vertical direction, and the screws 59 are held in the holes 58 so as to be vertically movable.
- a wet paper web sensor 60 is disposed on the transport track of the lower transport belt 33 at a position downstream of the calendar unit 4 in the transport direction. Is detected.
- the calendar unit 4 drives the motor 51 to place the press roller 41 at the press position when the output value of the wet paper web sensor 60 is a value detected when the front end of the wet paper web 124 is detected.
- the press pressure of the press roller 41 in the calendar unit 4 can be arbitrarily set by changing the spring 45, and in this embodiment, the arrangement position of the calendar unit 4 is the downstream side in the transport direction of the lower transport belt 33.
- the press pressure of the press roller 41 of the calendar unit 4 is set high.
- the press pressure of each calendar unit 4 is set according to the moisture content of the wet paper 124 at a position corresponding to the wet paper 124 in each of the calendar units 4, and the wet paper 124 is conveyed downward. The moisture content decreases due to drying as the belt 33 is further downstream in the conveying direction.
- the hanger plate 46 lifts the press roller 41 via the side plate 43 and holds it in the retracted position.
- a deinked pulp-containing liquid containing deinked pulp is uniformly ejected from the head box 11 onto the mesh belt 123 and drained by the mesh belt 123 to form a fiber layer.
- the wet paper 124 is transferred from the mesh belt 123 to the water absorption belt 22, absorbed by the water absorption belt 22 and dehydrated, and the wet paper 124 sandwiched between the water absorption belt 22 and the lower conveyance belt 33 is pressed by the press unit 23.
- the wet paper 124 that has been dehydrated and passed through the press unit 23 is transferred from the water absorption belt 22 to the lower conveyance belt 33.
- the wet paper 124 passes through the first calendar unit 4 and then passes through the wet paper sensor 60, and the wet paper sensor 60 detects the passage of the tip of the wet paper 124.
- the first calendar unit 4 drives the motor 51 to place the press roller 41 at the press position.
- the drive shaft 48 is rotated via the pinion gear 53 and the driven gear 54 by driving the motor 51, so that the hanger plate 46 is moved to the lower end position and supported by the side plate 43.
- the press roller 41 reaches a pressing position where it contacts the wet paper 124, and the lower conveyance belt 33 and the wet paper 124 are sandwiched between the press roller 41 and the counter roller 40.
- the press roller 41 starts from the middle position of the wet paper 124 on the lower transport belt 33.
- the wet paper web 124 is pressed against the paper 124. For this reason, it is possible to prevent the press roller 41 from winding the front end of the wet paper 124, and as a result, it is possible to perform paper surface smoothing processing, that is, calendar processing at the wet paper stage.
- the press pressure of the first calendar unit 4 corresponds to the moisture content of the wet paper 124 at a position where the first calendar unit 4 corresponds to the wet paper 124, and in this embodiment, 50 to 60%.
- the press roller 41 comes into contact with the wet paper 124 having a high water content at a low pressure, and the wet paper 124 having a high water content before being heated and dried by the drying roller 32 can be prevented from being wound around the press roller 41 and has a high water content.
- the movement of the fibers contained in the wet paper 124 caused by pressing the wet paper 124 with a high pressure is prevented, and as a result, damage to the wet paper 124 by the press can be suppressed.
- the lower conveyance belt 33 and the upper conveyance belt 35 are overlapped on the surface of the drying roller 32 with the wet paper 124 interposed therebetween, and are pressed against the drying roller 32 to dry the wet paper 124.
- the upper conveying belt 35 moves away from the wet paper 124 and beyond the calendar unit 4.
- the wet paper 124 is sandwiched between the upper conveyance belt 35 and the lower conveyance belt 33. In this case, the wet paper 124 does not have a trace of the mesh of the upper conveying belt 35, and the paper surface is flattened without fail.
- the second calendar unit 4 drives the motor 51 to place the press roller 41 at the press position, and sandwiches the lower conveyance belt 33 and the wet paper 124 between the press roller 41 and the drying roller 32.
- the lower conveyance belt 33 and the wet paper 124 are sandwiched between the press roller 41 and the drying roller 32.
- the press roller 41 is displaced to the press position after the leading end of the wet paper passes, and the press roller 41 is pressed against the wet paper 124 from a midway position of the wet paper 124 to press the wet paper 124, so that the press roller 41 can prevent the front end of the wet paper 124 from being caught.
- the press pressure of the second and third calender parts 4 corresponds to the moisture content of the wet paper 124 at the position where the calender part 4 corresponds to the wet paper 124.
- the second calender part 4 the moisture content of the wet paper 124 is 40 to 50%, and the moisture content of the wet paper 124 is 30 to 40% in the third calendar unit 4.
- the press roller 41 presses the wet paper 124 at a high pressure against the wet paper 124 in the middle of drying, whose moisture content has decreased due to drying by the drying roller 32.
- the configuration in which the wet paper web sensor 60 is arranged on the downstream side in the conveyance direction of the calendar unit 4 is illustrated, but the wet paper web sensor 60 can also be arranged on the upstream side in the conveyance of the calendar unit 4. .
- the calendar unit 4 places the press roller 41 at the press position after a predetermined time has elapsed after the wet paper web sensor 60 detects the passage of the wet paper web tip.
- the calendar unit 4 arranges the press roller 41 at the press position after a predetermined time has elapsed after the detection means detects the start of the supply pump.
- a detection means there is a general sensor or a sensor that detects a command signal that is issued by the CPU to start or stop the pump.
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Abstract
A paper surface smoothing device for a paper making machine comprises: a lower conveyance belt (33) for conveying wet paper (124) placed on the conveyance surface of the lower conveyance belt (33); a wet-paper sensor (60) for detecting the passage of the leading edge of the wet paper (124); and a calender section (4) having a pressing roller (41) capable of being, according to the value of an output from the wet paper sensor (60), displaced between a pressing position and a retracted position, the pressing position being the position at which the pressing roller (41) grips the wet paper (124) between pressing roller (41) and the lower conveyance belt (33), the retracted position being the position at which the pressing roller (41) is separated from the wet paper (124).
Description
本発明は、抄紙機の紙表面平滑化装置に関し、古紙を離解させた再生パルプから紙を製造する技術に係るものである。
The present invention relates to a paper surface smoothing device for a paper machine, and relates to a technique for producing paper from recycled pulp obtained by breaking up used paper.
一般的な製紙工場で行なっている製紙方法は、パルプ工程、抄紙工程、仕上工程からなり、古紙を原料として使用する場合には古紙パルプ工程が加わる。
A papermaking method performed in a general paper mill includes a pulp process, a papermaking process, and a finishing process. When used paper is used as a raw material, a used paper pulp process is added.
このうち、抄紙工程では、抄紙機のワイヤーパート、プレスパート、ドライヤーパート、カレンダーパート、コーターパートを経て製品の紙とする。ワイヤーパートでは調製(再生)されたパルプを抄紙用の網(ワイヤー)に乗せて脱水して紙を抄き、プレスパートではワイヤーパートから出た水分を多く含んだ湿紙の水分を除去する。ドライヤーパートでは蒸気で加熱されたドライヤーに紙を通して乾燥させ、カレンダーパートではロール間に紙を通して表面の凹凸を平滑化し、コーターパートでは原紙に塗料を塗工する。
Of these, in the paper making process, the product paper is processed through the wire part, press part, dryer part, calendar part and coater part of the paper machine. In the wire part, the prepared (regenerated) pulp is placed on a paper making net (wire) and dehydrated to make paper, and in the press part, the moisture in the wet paper containing a large amount of moisture from the wire part is removed. In the dryer part, the paper is dried through a dryer heated with steam, in the calendar part, the paper surface is smoothed between the rolls, and in the coater part, the base paper is coated with paint.
日本国特許公開公報 特開2007-84967号公報に記載する古紙再生装置は、古紙を離解し、叩解して古紙パルプを製造するパルプ製造部と、パルプ製造部で製造された古紙パルプを抄紙して再生紙を製造する抄紙部と、平滑面無端ベルト上の湿紙を加熱乾燥する加熱乾燥部を備えている。
The used paper recycling apparatus described in Japanese Patent Publication No. 2007-84967 discloses a pulp manufacturing section that dissects and beats used paper to produce used paper pulp, and paper making used paper pulp manufactured by the pulp manufacturing section. A paper making section for producing recycled paper, and a heat drying section for heat drying the wet paper on the smooth endless belt.
加熱乾燥部は走行経路の途中箇所に配されたヒータプレートを加熱部として備えており、ヒータプレートが平滑面無端ベルト上の湿紙を間接的に加熱乾燥させる。平滑面無端ベルトの走行途中には、カレンダー用の平滑面仕上げロールをヒータプレートと対向して並列状に配置しており、両平滑面仕上げロールが平滑面無端ベルト上の湿紙を順次転動加圧して湿紙を適正な平滑面に仕上げる。
The heating and drying unit includes a heater plate disposed in the middle of the travel route as a heating unit, and the heater plate indirectly heats and wets the wet paper on the smooth endless belt. During the running of the smooth surface endless belt, the smooth surface finishing roll for calendar is arranged in parallel facing the heater plate, and both smooth surface finishing rolls sequentially roll the wet paper on the smooth surface endless belt. Press to finish the wet paper to an appropriate smooth surface.
上記した従来の構成において、一般的な製紙工場のカレンダーパートは抄紙後に乾燥させた用紙に高圧力で行なっており、機械部品には高圧に耐えるものを使用している。しかしながら、小型製紙機に高圧力のカレンダーパートを設けることは耐久性に不安があり、また装置コストが高くなる問題があった。
In the conventional configuration described above, the calendar part of a general paper mill performs high pressure on paper that has been dried after paper making, and uses mechanical parts that can withstand high pressure. However, the provision of a high-pressure calendar part in a small papermaking machine has a problem in durability and increases the cost of the apparatus.
このため、特許文献1に示すように、乾燥途中の湿紙にカレンダー加工を施すものがある。しかし、抄紙後の湿紙をプレスする場合には、湿紙がプレスローラに巻き付いたり、湿紙中の繊維が移動する繊維流れが発生して湿紙にダメージを与える。
For this reason, as shown in Patent Document 1, there is a paper that performs calendar processing on wet paper in the middle of drying. However, when the wet paper after paper making is pressed, the wet paper is wound around the press roller, or a fiber flow in which the fibers in the wet paper move is generated, and the wet paper is damaged.
本発明は上記した課題を解決するものであり、湿紙の巻き付きおよび繊維流れの発生を防止し、かつ最終的に所定の圧力でカレンダー加工を行なうことができる抄紙機の紙表面平滑化装置を提供することを目的とする。
SUMMARY OF THE INVENTION The present invention solves the above-described problems, and provides a paper surface smoothing device for a paper machine that can prevent wet paper wrapping and generation of fiber flow and can finally perform calendering at a predetermined pressure. The purpose is to provide.
上記課題を解決するために、本発明の抄紙機の紙表面平滑化装置は、搬送面に湿紙を載置して搬送する搬送ベルトと、湿紙先端の通過を検出するセンサと、センサの出力値に応じて、湿紙を搬送ベルトとの間で挟むプレス位置と湿紙から離間する退避位置とにわたって変位可能なプレスローラを有したカレンダ部を備えることを特徴とする。
In order to solve the above-described problems, a paper surface smoothing device for a paper machine according to the present invention includes a transport belt that transports wet paper placed on a transport surface, a sensor that detects passage of the wet paper web tip, A calender unit having a press roller that is displaceable between a press position for sandwiching the wet paper with the conveyance belt and a retracted position away from the wet paper according to the output value is provided.
本発明の抄紙機の紙表面平滑化装置は、搬送面に湿紙を載置して搬送する搬送ベルトと、搬送ベルトを介して湿紙を加熱する乾燥ローラと、搬送ベルトの搬送方向に沿って、かつ乾燥ローラに対向する位置を含む複数箇所に配置する複数のカレンダ部を備え、各カレンダ部は湿紙を搬送ベルトとの間で挟むプレスローラを有し、カレンダ部の配置位置が搬送ベルトの搬送方向下流側であるほどにプレスローラのプレス圧を高く設定することを特徴とする。
A paper surface smoothing device for a paper machine according to the present invention includes a transport belt that transports wet paper on a transport surface, a drying roller that heats the wet paper via the transport belt, and a transport direction of the transport belt. And a plurality of calendar portions arranged at a plurality of locations including a position facing the drying roller, each calendar portion having a press roller for sandwiching the wet paper with the conveying belt, and the arrangement position of the calendar portion is conveyed. It is characterized in that the press pressure of the press roller is set higher as it is further downstream in the belt conveying direction.
また、本発明の抄紙機の紙表面平滑化装置において、センサはカレンダ部より搬送方向下流側に配置し、カレンダ部はセンサが湿紙先端の通過を検出した場合にプレスローラをプレス位置に配置することを特徴とする。
Further, in the paper surface smoothing device of the paper machine of the present invention, the sensor is arranged downstream in the transport direction from the calendar unit, and the calender unit arranges the press roller at the press position when the sensor detects passage of the wet paper web front end. It is characterized by doing.
また、本発明の抄紙機の紙表面平滑化装置において、センサはカレンダ部より搬送方向上流側に配置し、カレンダ部はセンサが湿紙先端の通過を検出して所定時間経過した後にプレスローラをプレス位置に配置することを特徴とする。
Further, in the paper surface smoothing device of the paper machine of the present invention, the sensor is arranged on the upstream side in the transport direction from the calendar unit, and the calender unit detects the passage of the tip of the wet paper and the press roller is passed after a predetermined time has passed. It arrange | positions in a press position, It is characterized by the above-mentioned.
また、本発明の抄紙機の紙表面平滑化装置において、各カレンダ部のプレス圧は各カレンダ部が湿紙に対応する位置での湿紙の含水率に応じて設定することを特徴とする。
Further, in the paper surface smoothing device of the paper machine of the present invention, the press pressure of each calendar section is set according to the moisture content of the wet paper at the position where each calendar section corresponds to the wet paper.
本発明の抄紙機の紙表面平滑化装置は、搬送面に湿紙を載置して搬送する搬送ベルトと、搬送ベルト上にパルプを供給する供給ポンプの起動、停止を検出する検出手段と、湿紙を搬送ベルトとの間で挟むプレス位置と湿紙から離間する退避位置とにわたって変位可能なプレスローラを有したカレンダ部を備え、カレンダ部は検出手段が供給ポンプの起動を検出して所定時間経過した後にプレスローラをプレス位置に配置することを特徴とする。
The paper surface smoothing device of the paper machine of the present invention includes a conveyor belt that carries wet paper on a conveyor surface and conveys, a detection unit that detects the start and stop of a supply pump that supplies pulp onto the conveyor belt, It has a calender part having a press roller that can be displaced over a pressing position for sandwiching the wet paper with the conveying belt and a retracting position away from the wet paper, and the calender part is detected by the detection means when the supply pump is activated. The press roller is arranged at the press position after a lapse of time.
以上のように本発明によれば、湿紙先端の通過をセンサで検出してプレスローラをプレス位置に変位させることにより、プレスローラは搬送ベルト上の湿紙の途中位置から湿紙に圧接して湿紙をプレスする。このため、プレスローラが湿紙の先端を巻き込むことを防止でき、湿紙段階で紙表面平滑化処理、つまりカレンダー加工を行なうことができる。
As described above, according to the present invention, by detecting the passage of the leading end of the wet paper with the sensor and displacing the press roller to the press position, the press roller is pressed against the wet paper from the middle position of the wet paper on the conveyor belt. Press the wet paper. For this reason, it is possible to prevent the press roller from involving the tip of the wet paper, and it is possible to perform paper surface smoothing processing, that is, calendar processing at the wet paper stage.
複数のカレンダ部のプレスローラのプレス圧を搬送ベルトの搬送方向下流側に位置するカレンダ部のものほど高く設定することで、含水率の高い湿紙にはプレスローラが低圧で当接し、乾燥ローラによる乾燥によって含水率が低下した湿紙にはプレスローラが高圧で圧接してプレスする。このため、含水率の高い湿紙がプレスローラに巻き付くことを防止できるとともに、含水率の高い湿紙を高い圧力でプレスすることにより生じる湿紙中の繊維の移動を防止してプレスが湿紙に与えるダメージを抑制しつつ、湿紙段階で紙表面平滑化処理、つまりカレンダー加工を行なうことができる。
By setting the press pressure of the press rollers of the plurality of calendar sections higher for the calender section located downstream in the transport direction of the transport belt, the press roller comes into contact with the wet paper having a high water content at a low pressure, and the drying roller The wet paper whose moisture content has been reduced by drying by pressing is pressed by a press roller at high pressure. For this reason, it is possible to prevent the wet paper having a high moisture content from being wound around the press roller, and to prevent the movement of the fibers in the wet paper caused by pressing the wet paper having a high water content at a high pressure. Paper surface smoothing, that is, calendaring can be performed at the wet paper stage while suppressing damage to the paper.
以下、本発明の実施の形態を図面に基づいて説明する。図1から図5において、抄紙機である古紙処理装置は、抄紙部1と脱水部2と乾燥部3とカレンダ部4を備えており、図示を省略するが、その他に古紙を離解して再生パルプを調製する再生パルプ部と、インク、トナー等の異物を繊維から分離して脱墨パルプを調製する脱墨パルプ部を備えており、古紙から再生紙を調製するものである。
Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 5, a used paper processing apparatus, which is a paper machine, includes a paper making unit 1, a dewatering unit 2, a drying unit 3, and a calendar unit 4, and although not shown, the used paper is separated and recycled. A recycled pulp section for preparing pulp and a deinking pulp section for preparing deinked pulp by separating foreign matters such as ink and toner from fibers are prepared, and recycled paper is prepared from used paper.
抄紙部1は、脱墨パルプを抄紙して再生紙を調製(再生)するものであり、ヘッドボックス11、ワイヤー部12からなる。ワイヤー部12は両側のローラ121および中間のローラ122に掛け渡して展張したメッシュベルト123を有し、メッシュベルト123が無端軌道を形成している。メッシュベルト123にはヘッドボックス11から脱墨パルプを含む脱墨パルプ含有液を均一に噴出させ、メッシュベルト123で水切りして繊維の層をなす湿紙124を形成する。
The paper making unit 1 is a unit that makes deinked pulp and prepares (recycles) recycled paper, and includes a head box 11 and a wire unit 12. The wire portion 12 has a mesh belt 123 stretched over both rollers 121 and an intermediate roller 122, and the mesh belt 123 forms an endless track. A liquid containing deinked pulp including deinked pulp is uniformly ejected from the head box 11 to the mesh belt 123, and wet paper 124 forming a fiber layer is formed by draining with the mesh belt 123.
脱水部2は、複数のローラ21の間に掛け渡したフェルトからなる吸水ベルト22を有し、湿紙124をメッシュベルト123から吸水ベルト22に転移させ、吸水ベルト22で吸水して脱水するものであり、吸水ベルト22の搬送軌道上にプレス部23を形成している。プレス部23はローラ21と後述する乾燥部3のローラ31の間において吸水ベルト22と後述する乾燥部3の下搬送ベルト33の間に挟んだ湿紙124を押圧して脱水するものであり、プレス部23を通過した湿紙124が吸水ベルト22から下搬送ベルト33に転移する。
The dewatering unit 2 has a water absorbent belt 22 made of felt that is stretched between a plurality of rollers 21, transfers the wet paper 124 from the mesh belt 123 to the water absorbent belt 22, and absorbs water with the water absorbent belt 22 to dehydrate it. The press portion 23 is formed on the conveyance track of the water absorption belt 22. The press unit 23 presses and dehydrates the wet paper 124 sandwiched between the water absorbing belt 22 and the lower conveyance belt 33 of the drying unit 3 described later between the roller 21 and a roller 31 of the drying unit 3 described later. The wet paper 124 that has passed through the press unit 23 is transferred from the water absorption belt 22 to the lower conveyance belt 33.
乾燥部3は、複数のローラ31と内部にヒーターを備えた乾燥ローラ32の間に掛け渡したスチール製の下搬送ベルト33と、複数のローラ34と乾燥ローラ32の間に掛け渡した網状をなす樹脂製の上搬送ベルト35を有し、下搬送ベルト33と上搬送ベルト35が湿紙124を挟んで乾燥ローラ32の表面上で重なり、乾燥ローラ32に圧接させて湿紙124を乾燥させるものである。
The drying unit 3 has a steel lower conveyance belt 33 spanned between a plurality of rollers 31 and a drying roller 32 provided with a heater therein, and a net-like shape spanned between the plurality of rollers 34 and the drying roller 32. The upper transport belt 35 is made of resin, and the lower transport belt 33 and the upper transport belt 35 overlap on the surface of the drying roller 32 with the wet paper 124 interposed therebetween, and press the dry roller 32 to dry the wet paper 124. Is.
カレンダ部4は、下搬送ベルト33の搬送方向に沿って複数箇所に配置し、少なくとも一つは乾燥ローラ32に対向する位置に配置する。各カレンダ部4は湿紙124を下搬送ベルト33との間で挟むプレスローラ41を湿紙124に当接するプレス位置と湿紙124から離間する退避位置とにわたって変位可能に備えている。最上流位置の第1のカレンダ部4はプレスローラ41がカウンターローラ40に対向し、第2、第3のカレンダ部4はプレスローラ41が乾燥ローラ32に対向している。
The calendar unit 4 is arranged at a plurality of locations along the conveyance direction of the lower conveyance belt 33, and at least one is arranged at a position facing the drying roller 32. Each calendar unit 4 includes a press roller 41 that sandwiches the wet paper 124 between the lower transport belt 33 and a press position that contacts the wet paper 124 and a retracted position that is separated from the wet paper 124. In the first calendar portion 4 at the most upstream position, the press roller 41 faces the counter roller 40, and in the second and third calendar portions 4, the press roller 41 faces the drying roller 32.
図2乃至図5に示すように、カレンダ部4は、プレスローラ41の回転軸の両端をそれぞれ軸受けブロック42で回転自在に保持しており、サイドプレート43が上下方向に長い形状をなす孔44の内部に軸受けブロック42を上下動可能に保持し、孔44に配置した付勢体、ここではスプリング45が軸受けブロック42を下方へ押圧している。
As shown in FIGS. 2 to 5, the calendar portion 4 holds both ends of the rotation shaft of the press roller 41 so as to be rotatable by bearing blocks 42, and the side plate 43 has a hole 44 having a long shape in the vertical direction. The bearing block 42 is held so as to be movable up and down, and an urging body disposed in the hole 44, here, a spring 45 presses the bearing block 42 downward.
双方のサイドプレート43はそれぞれハンガープレート46を介して駆動部47に連結している。駆動部47は、装置本体で回転自在に保持するドライブシャフト48を備えるとともに、装置本体に固定した固定プレート49、50を有し、一方の固定プレート49に駆動装置であるモータ51を設け、他方の固定プレート50に位置検出センサ52を設けている。
Both side plates 43 are connected to a drive unit 47 via hanger plates 46, respectively. The drive unit 47 includes a drive shaft 48 that is rotatably held by the apparatus main body, and includes fixed plates 49 and 50 fixed to the apparatus main body. The motor 51 that is a drive device is provided on one fixed plate 49, and the other A position detection sensor 52 is provided on the fixed plate 50.
モータ51に設けたピニオンギア53はドライブシャフト48の一方端側に設けた従動ギア54に噛合している。ドライブシャフト48の他端側には位置検出センサ52の遮光プレート55を設けており、ドライブシャフト48の回転に伴って遮光プレート55が位置検出センサ52の発光部52aと受光部52bの間の光軸を遮る遮光位置と光軸から離間する退避位置とにわたって回動する。
The pinion gear 53 provided on the motor 51 meshes with a driven gear 54 provided on one end side of the drive shaft 48. A light shielding plate 55 of the position detection sensor 52 is provided on the other end side of the drive shaft 48, and the light shielding plate 55 transmits light between the light emitting portion 52 a and the light receiving portion 52 b of the position detection sensor 52 as the drive shaft 48 rotates. It rotates over a light blocking position that blocks the shaft and a retracted position that is spaced from the optical axis.
ドライブシャフト48の両端にはそれぞれ偏芯ブロック56を設けており、偏芯ブロック56の偏芯位置、つまりドライブシャフト48の回転軸心から離れた位置にハンガープレート46をネジ57で枢着している。ハンガープレート46は上下方向に長い形状をなす孔58に挿通したネジ59でサイドプレート43に連結しており、孔58においてネジ59を上下動可能に保持している。
Eccentric blocks 56 are provided at both ends of the drive shaft 48, and the hanger plate 46 is pivotally attached to the eccentric position of the eccentric block 56, that is, at a position away from the rotational axis of the drive shaft 48 with screws 57. Yes. The hanger plate 46 is connected to the side plate 43 by screws 59 inserted through holes 58 that are long in the vertical direction, and the screws 59 are held in the holes 58 so as to be vertically movable.
図1に示すように、下搬送ベルト33の搬送軌道上にはカレンダ部4より搬送方向下流側の位置に湿紙用センサ60を配置しており、湿紙用センサ60は湿紙124の先端の通過を検出するものである。カレンダ部4は、湿紙用センサ60の出力値が湿紙124の先端の通過を検出した値である場合に、モータ51を駆動してプレスローラ41をプレス位置に配置する。
As shown in FIG. 1, a wet paper web sensor 60 is disposed on the transport track of the lower transport belt 33 at a position downstream of the calendar unit 4 in the transport direction. Is detected. The calendar unit 4 drives the motor 51 to place the press roller 41 at the press position when the output value of the wet paper web sensor 60 is a value detected when the front end of the wet paper web 124 is detected.
カレンダ部4におけるプレスローラ41のプレス圧はスプリング45を変更することで任意に設定可能であり、本実施の形態ではカレンダ部4の配置位置が下搬送ベルト33の搬送方向下流側であるほどにカレンダ部4のプレスローラ41のプレス圧を高く設定している。また、本実施の形態では、各カレンダ部4のプレス圧はカレンダ部4のそれぞれが湿紙124に対応する位置における湿紙124の含水率に応じて設定しており、湿紙124は下搬送ベルト33の搬送方向下流側であるほどに乾燥によって含水率が低下する。
The press pressure of the press roller 41 in the calendar unit 4 can be arbitrarily set by changing the spring 45, and in this embodiment, the arrangement position of the calendar unit 4 is the downstream side in the transport direction of the lower transport belt 33. The press pressure of the press roller 41 of the calendar unit 4 is set high. Further, in the present embodiment, the press pressure of each calendar unit 4 is set according to the moisture content of the wet paper 124 at a position corresponding to the wet paper 124 in each of the calendar units 4, and the wet paper 124 is conveyed downward. The moisture content decreases due to drying as the belt 33 is further downstream in the conveying direction.
以下、上記構成の作用を説明する。古紙処理装置の運転開始時において、図2および図3に示すように、カレンダ部4では、ハンガープレート46がサイドプレート43を介してプレスローラ41を吊り上げて退避位置に保持している。
Hereinafter, the operation of the above configuration will be described. At the start of operation of the used paper processing apparatus, as shown in FIGS. 2 and 3, in the calendar unit 4, the hanger plate 46 lifts the press roller 41 via the side plate 43 and holds it in the retracted position.
この状態で、図1に示すように、メッシュベルト123にヘッドボックス11から脱墨パルプを含む脱墨パルプ含有液を均一に噴出させ、メッシュベルト123で水切りして繊維の層をなす湿紙124を形成する。
In this state, as shown in FIG. 1, a deinked pulp-containing liquid containing deinked pulp is uniformly ejected from the head box 11 onto the mesh belt 123 and drained by the mesh belt 123 to form a fiber layer. Form.
そして、湿紙124をメッシュベルト123から吸水ベルト22に転移させ、吸水ベルト22で吸水して脱水し、プレス部23で吸水ベルト22と下搬送ベルト33の間に挟んだ湿紙124を押圧して脱水し、プレス部23を通過した湿紙124を吸水ベルト22から下搬送ベルト33に転移させる。
Then, the wet paper 124 is transferred from the mesh belt 123 to the water absorption belt 22, absorbed by the water absorption belt 22 and dehydrated, and the wet paper 124 sandwiched between the water absorption belt 22 and the lower conveyance belt 33 is pressed by the press unit 23. The wet paper 124 that has been dehydrated and passed through the press unit 23 is transferred from the water absorption belt 22 to the lower conveyance belt 33.
下搬送ベルト33の移動によって湿紙124が第1のカレンダ部4を通過し、その後に湿紙用センサ60を通過すると、湿紙用センサ60が湿紙124の先端の通過を検出する。湿紙用センサ60の出力値が湿紙124の先端の通過を検出した値、ここではONとなると、第1のカレンダ部4はモータ51を駆動してプレスローラ41をプレス位置に配置する。
When the lower transport belt 33 moves, the wet paper 124 passes through the first calendar unit 4 and then passes through the wet paper sensor 60, and the wet paper sensor 60 detects the passage of the tip of the wet paper 124. When the output value of the wet paper web sensor 60 detects the passage of the front end of the wet paper web 124, which is ON here, the first calendar unit 4 drives the motor 51 to place the press roller 41 at the press position.
すなわち、図4および図5に示すように、モータ51の駆動によりピニオンギヤ53および従動ギヤ54を介してドライブシャフト48が回転することでハンガープレート46が下端位置に移動し、サイドプレート43で支持するプレスローラ41が湿紙124に当接するプレス位置に達し、プレスローラ41とカウンターローラ40との間で下搬送ベルト33、湿紙124を挟む。
That is, as shown in FIGS. 4 and 5, the drive shaft 48 is rotated via the pinion gear 53 and the driven gear 54 by driving the motor 51, so that the hanger plate 46 is moved to the lower end position and supported by the side plate 43. The press roller 41 reaches a pressing position where it contacts the wet paper 124, and the lower conveyance belt 33 and the wet paper 124 are sandwiched between the press roller 41 and the counter roller 40.
このように、湿紙先端の通過を湿紙用センサ60で検出してプレスローラ41をプレス位置に変位させることにより、プレスローラ41は下搬送ベルト33上の湿紙124の途中位置から湿紙124に圧接して湿紙124をプレスする。このため、プレスローラ41が湿紙124の先端を巻き込むことを防止でき、その結果、湿紙段階で紙表面平滑化処理、つまりカレンダー加工を行なうことができる。
In this way, by detecting the passage of the front end of the wet paper by the wet paper sensor 60 and displacing the press roller 41 to the press position, the press roller 41 starts from the middle position of the wet paper 124 on the lower transport belt 33. The wet paper web 124 is pressed against the paper 124. For this reason, it is possible to prevent the press roller 41 from winding the front end of the wet paper 124, and as a result, it is possible to perform paper surface smoothing processing, that is, calendar processing at the wet paper stage.
プレス位置では、ハンガープレート46の孔58の上端縁がネジ59に当接してサイドプレート43およびプレスローラ41を下方へ押し圧し、さらにスプリング45がプレスローラ41にプレス圧を与える。
In the pressing position, the upper edge of the hole 58 of the hanger plate 46 abuts against the screw 59 to press the side plate 43 and the press roller 41 downward, and the spring 45 applies press pressure to the press roller 41.
このとき、第1のカレンダ部4のプレス圧は第1のカレンダ部4が湿紙124に対応する位置における湿紙124の含水率に応じたものであり、本実施の形態では50~60%の含水率の高い湿紙124にプレスローラ41が低圧で当接し、乾燥ローラ32による加熱乾燥前の含水率の高い湿紙124がプレスローラ41に巻き付くことを防止できるとともに、含水率の高い湿紙124を高い圧力でプレスすることにより生じる湿紙124に含まれた繊維の移動を防止し、その結果、プレスが湿紙124に与えるダメージを抑制できる。
At this time, the press pressure of the first calendar unit 4 corresponds to the moisture content of the wet paper 124 at a position where the first calendar unit 4 corresponds to the wet paper 124, and in this embodiment, 50 to 60%. The press roller 41 comes into contact with the wet paper 124 having a high water content at a low pressure, and the wet paper 124 having a high water content before being heated and dried by the drying roller 32 can be prevented from being wound around the press roller 41 and has a high water content. The movement of the fibers contained in the wet paper 124 caused by pressing the wet paper 124 with a high pressure is prevented, and as a result, damage to the wet paper 124 by the press can be suppressed.
次に、乾燥部3では、下搬送ベルト33と上搬送ベルト35が湿紙124を挟んで乾燥ローラ32の表面上で重なり、乾燥ローラ32に圧接させて湿紙124を乾燥させる。第2および第3のカレンダ部4では上搬送ベルト35が湿紙124から離間してカレンダ部4を越えて移動する。
Next, in the drying unit 3, the lower conveyance belt 33 and the upper conveyance belt 35 are overlapped on the surface of the drying roller 32 with the wet paper 124 interposed therebetween, and are pressed against the drying roller 32 to dry the wet paper 124. In the second and third calendar units 4, the upper conveying belt 35 moves away from the wet paper 124 and beyond the calendar unit 4.
なお、このように上搬送ベルト35が湿紙124から離間してカレンダ部4を越えて移動する構成を備えることで、湿紙124は上搬送ベルト35と下搬送ベルト33とに挟まれた状態でプレスされないので、湿紙124に上搬送ベルト35の網目の跡形が付くことがなく、確実に紙表面平坦化処理が施される。
In addition, since the upper conveyance belt 35 is separated from the wet paper 124 and moves beyond the calendar unit 4 in this manner, the wet paper 124 is sandwiched between the upper conveyance belt 35 and the lower conveyance belt 33. In this case, the wet paper 124 does not have a trace of the mesh of the upper conveying belt 35, and the paper surface is flattened without fail.
第1のカレンダ部4と同様に、下搬送ベルト33の移動によって湿紙124が第2のカレンダ部4を通過し、湿紙用センサ60が湿紙124の先端の通過を検出すると、第2のカレンダ部4はモータ51を駆動してプレスローラ41をプレス位置に配置し、プレスローラ41と乾燥ローラ32との間で下搬送ベルト33、湿紙124を挟む。
Similarly to the first calendar unit 4, when the wet paper web 124 passes through the second calendar unit 4 due to the movement of the lower conveyance belt 33 and the wet paper web sensor 60 detects the passage of the front end of the wet paper web 124, the second The calendar unit 4 drives the motor 51 to place the press roller 41 at the press position, and sandwiches the lower conveyance belt 33 and the wet paper 124 between the press roller 41 and the drying roller 32.
同様にして、第3のカレンダ部4においてもプレスローラ41と乾燥ローラ32との間で下搬送ベルト33、湿紙124を挟む。
Similarly, in the third calendar unit 4, the lower conveyance belt 33 and the wet paper 124 are sandwiched between the press roller 41 and the drying roller 32.
このように、湿紙先端が通過した後にプレスローラ41をプレス位置に変位させ、プレスローラ41を湿紙124の途中位置から湿紙124に圧接させて湿紙124をプレスすることで、プレスローラ41が湿紙124の先端を巻き込むことを防止できる。
In this way, the press roller 41 is displaced to the press position after the leading end of the wet paper passes, and the press roller 41 is pressed against the wet paper 124 from a midway position of the wet paper 124 to press the wet paper 124, so that the press roller 41 can prevent the front end of the wet paper 124 from being caught.
この第2および第3のカレンダ部4のプレス圧はそのカレンダ部4が湿紙124に対応する位置における湿紙124の含水率に応じたもので、本実施の形態では、第2のカレンダ部4において湿紙124の含水率が40~50%であり、第3のカレンダ部4において湿紙124の含水率が30~40%であり、搬送方向下流側に位置するカレンダ部4のものほどプレス圧を高く設定することで、乾燥ローラ32による乾燥によって含水率が低下した乾燥途中の湿紙124にプレスローラ41が高圧で圧接して湿紙124をプレスする。
The press pressure of the second and third calender parts 4 corresponds to the moisture content of the wet paper 124 at the position where the calender part 4 corresponds to the wet paper 124. In the present embodiment, the second calender part 4, the moisture content of the wet paper 124 is 40 to 50%, and the moisture content of the wet paper 124 is 30 to 40% in the third calendar unit 4. By setting the press pressure high, the press roller 41 presses the wet paper 124 at a high pressure against the wet paper 124 in the middle of drying, whose moisture content has decreased due to drying by the drying roller 32.
本実施の形態では、湿紙用センサ60をカレンダ部4の搬送方向下流側に配置した構成を例示したが、湿紙用センサ60はカレンダ部4の搬送上流側に配置することも可能である。この場合に、カレンダ部4は湿紙用センサ60が湿紙先端の通過を検出して所定時間経過した後にプレスローラ41をプレス位置に配置する。
In the present embodiment, the configuration in which the wet paper web sensor 60 is arranged on the downstream side in the conveyance direction of the calendar unit 4 is illustrated, but the wet paper web sensor 60 can also be arranged on the upstream side in the conveyance of the calendar unit 4. . In this case, the calendar unit 4 places the press roller 41 at the press position after a predetermined time has elapsed after the wet paper web sensor 60 detects the passage of the wet paper web tip.
また、湿紙用センサ60に代えて、メッシュベルト123の上にパルプを供給する供給ポンプの起動、停止を検出する検出手段を設けることも可能である。この場合に、カレンダ部4は検出手段が供給ポンプの起動を検出して所定時間経過した後にプレスローラ41をプレス位置に配置する。検出手段としては、一般的なセンサや、CPUがポンプの起動、停止を命ずるために発する指令信号を検出するものがある。
Further, instead of the wet paper web sensor 60, it is also possible to provide detection means for detecting the start and stop of the supply pump that supplies pulp onto the mesh belt 123. In this case, the calendar unit 4 arranges the press roller 41 at the press position after a predetermined time has elapsed after the detection means detects the start of the supply pump. As a detection means, there is a general sensor or a sensor that detects a command signal that is issued by the CPU to start or stop the pump.
Claims (6)
- 搬送面に湿紙を載置して搬送する搬送ベルトと、湿紙先端の通過を検出するセンサと、センサの出力値に応じて、湿紙を搬送ベルトとの間で挟むプレス位置と湿紙から離間する退避位置とにわたって変位可能なプレスローラを有したカレンダ部を備えることを特徴とする抄紙機の紙表面平滑化装置。 A transport belt that transports wet paper on the transport surface, a sensor that detects the passage of the front end of the wet paper, and a press position and wet paper that sandwich the wet paper with the transport belt according to the output value of the sensor A paper surface smoothing device for a paper machine, comprising a calender part having a press roller displaceable over a retracted position separated from the paper.
- 搬送面に湿紙を載置して搬送する搬送ベルトと、搬送ベルトを介して湿紙を加熱する乾燥ローラと、搬送ベルトの搬送方向に沿って、かつ乾燥ローラに対向する位置を含む複数箇所に配置する複数のカレンダ部を備え、各カレンダ部は湿紙を搬送ベルトとの間で挟むプレスローラを有し、カレンダ部の配置位置が搬送ベルトの搬送方向下流側であるほどにプレスローラのプレス圧を高く設定することを特徴とする抄紙機の紙表面平滑化装置。 A plurality of locations including a conveyance belt that carries wet paper on the conveyance surface, a drying roller that heats the wet paper via the conveyance belt, and a position along the conveyance direction of the conveyance belt and facing the drying roller A plurality of calender parts are arranged on each of the calender parts, and each calender part has a press roller for sandwiching the wet paper with the conveying belt, and the calorie part is arranged on the downstream side in the conveying direction of the conveying belt. A paper surface smoothing device for a paper machine, characterized in that the press pressure is set high.
- センサはカレンダ部より搬送方向下流側に配置し、カレンダ部はセンサが湿紙先端の通過を検出した場合にプレスローラをプレス位置に配置することを特徴とする請求項1に記載の抄紙機の紙表面平滑化装置。 2. The paper machine according to claim 1, wherein the sensor is disposed downstream in the conveyance direction from the calender unit, and the calender unit disposes a press roller at a press position when the sensor detects passage of a wet paper web front end. Paper surface smoothing device.
- センサはカレンダ部より搬送方向上流側に配置し、カレンダ部はセンサが湿紙先端の通過を検出して所定時間経過した後にプレスローラをプレス位置に配置することを特徴とする請求項1に記載の抄紙機の紙表面平滑化装置。 2. The sensor according to claim 1, wherein the sensor is disposed upstream of the calendering unit, and the calender unit disposes the press roller at a press position after a predetermined time has elapsed after the sensor detects passage of the leading end of the wet paper web. Paper surface smoothing device for paper machine.
- 各カレンダ部のプレス圧は各カレンダ部が湿紙に対応する位置での湿紙の含水率に応じて設定することを特徴とする請求項2に記載の抄紙機の紙表面平滑化装置。 3. The paper surface smoothing device for a paper machine according to claim 2, wherein the press pressure of each calendar section is set according to the moisture content of the wet paper at a position where each calendar corresponds to the wet paper.
- 搬送面に湿紙を載置して搬送する搬送ベルトと、搬送ベルト上にパルプを供給する供給ポンプの起動、停止を検出する検出手段と、湿紙を搬送ベルトとの間で挟むプレス位置と湿紙から離間する退避位置とにわたって変位可能なプレスローラを有したカレンダ部を備え、カレンダ部は検出手段が供給ポンプの起動を検出して所定時間経過した後にプレスローラをプレス位置に配置することを特徴とする抄紙機の紙表面平滑化装置。 A transport belt that carries wet paper on the transport surface, transports detection means for detecting the start and stop of a supply pump that supplies pulp onto the transport belt, and a press position that sandwiches the wet paper between the transport belt and A calender part having a press roller displaceable over a retracted position away from the wet paper is provided, and the calender part is arranged at the press position after a predetermined time has elapsed since the detection means detects the start of the supply pump. A paper surface smoothing device for a paper machine.
Priority Applications (1)
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DE112011101989T DE112011101989T5 (en) | 2010-06-14 | 2011-05-24 | Device for smoothing paper surfaces for paper machine |
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JP2010134623A JP5599234B2 (en) | 2010-06-14 | 2010-06-14 | Paper surface smoothing device for paper machine |
JP2010-134623 | 2010-06-14 |
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WO2011158613A1 true WO2011158613A1 (en) | 2011-12-22 |
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PCT/JP2011/061796 WO2011158613A1 (en) | 2010-06-14 | 2011-05-24 | Paper surface smoothing device for paper making machine |
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DE (1) | DE112011101989T5 (en) |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2290158A3 (en) * | 2006-05-19 | 2012-05-02 | Seed Co., Ltd. | Used paper recycling apparatus and its constituent devices |
Citations (4)
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JPH11119377A (en) * | 1997-10-14 | 1999-04-30 | Fuji Photo Film Co Ltd | Production of supporting paper base for photographic printing paper |
JPH11510565A (en) * | 1994-10-27 | 1999-09-14 | キンバリー クラーク ワールドワイド インコーポレイテッド | Method for producing a smooth, uncreped, through-dried sheet |
JP2003328288A (en) * | 2002-04-26 | 2003-11-19 | Mitsubishi Heavy Ind Ltd | Paper machine dryer and method of temperature control therefor |
JP2007084967A (en) * | 2005-09-22 | 2007-04-05 | Seed:Kk | Waste paper-reclaiming apparatus and its pulp production apparatus, pulp supply apparatus and water-removing apparatus |
-
2010
- 2010-06-14 JP JP2010134623A patent/JP5599234B2/en active Active
-
2011
- 2011-05-24 WO PCT/JP2011/061796 patent/WO2011158613A1/en active Application Filing
- 2011-05-24 DE DE112011101989T patent/DE112011101989T5/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH11510565A (en) * | 1994-10-27 | 1999-09-14 | キンバリー クラーク ワールドワイド インコーポレイテッド | Method for producing a smooth, uncreped, through-dried sheet |
JPH11119377A (en) * | 1997-10-14 | 1999-04-30 | Fuji Photo Film Co Ltd | Production of supporting paper base for photographic printing paper |
JP2003328288A (en) * | 2002-04-26 | 2003-11-19 | Mitsubishi Heavy Ind Ltd | Paper machine dryer and method of temperature control therefor |
JP2007084967A (en) * | 2005-09-22 | 2007-04-05 | Seed:Kk | Waste paper-reclaiming apparatus and its pulp production apparatus, pulp supply apparatus and water-removing apparatus |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2290158A3 (en) * | 2006-05-19 | 2012-05-02 | Seed Co., Ltd. | Used paper recycling apparatus and its constituent devices |
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JP5599234B2 (en) | 2014-10-01 |
DE112011101989T5 (en) | 2013-05-02 |
JP2012001820A (en) | 2012-01-05 |
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