WO2017041593A1 - 一种卷筒纸抽纸装置 - Google Patents

一种卷筒纸抽纸装置 Download PDF

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Publication number
WO2017041593A1
WO2017041593A1 PCT/CN2016/091022 CN2016091022W WO2017041593A1 WO 2017041593 A1 WO2017041593 A1 WO 2017041593A1 CN 2016091022 W CN2016091022 W CN 2016091022W WO 2017041593 A1 WO2017041593 A1 WO 2017041593A1
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WIPO (PCT)
Prior art keywords
paper
drum
cutter
web
roll
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PCT/CN2016/091022
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English (en)
French (fr)
Inventor
李和平
陈银山
黎天锋
冯建颖
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李和平
陈银山
黎天锋
冯建颖
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Application filed by 李和平, 陈银山, 黎天锋, 冯建颖 filed Critical 李和平
Publication of WO2017041593A1 publication Critical patent/WO2017041593A1/zh

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    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
    • A47K10/16—Paper towels; Toilet paper; Holders therefor
    • A47K10/18—Holders; Receptacles
    • A47K10/22—Holders; Receptacles for rolled-up webs
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT NOT OTHERWISE PROVIDED FOR; TOILET ACCESSORIES
    • A47K10/00—Body-drying implements; Toilet paper; Holders therefor
    • A47K10/24—Towel dispensers, e.g. for piled-up or folded textile towels; Toilet-paper dispensers; Dispensers for piled-up or folded textile towels provided or not with devices for taking-up soiled towels as far as not mechanically driven
    • A47K10/32—Dispensers for paper towels or toilet-paper
    • A47K10/34—Dispensers for paper towels or toilet-paper dispensing from a web, e.g. with mechanical dispensing means

Definitions

  • the invention relates to a paper drawing device, in particular to a web paper drawing device, belonging to the technical field of a web paper towel extracting device.
  • Paper towels are very common in public places and home applications, and there are three main types of paper machines for such paper towels. One is to place the cut fixed length paper towel in the paper machine, and the next paper towel is ready when the user pulls out a paper towel hard; the second is the fixed length of each piece of the whole paper towel. There is a row of small holes for the user to pull off; the third is a small hole for the whole roll of paper, which is cut through a variety of movements of the paper machine to cut a certain length of paper towel.
  • the third form has the lowest requirements for paper, so the economy is better, but the third type of paper drawing device of the prior art is too complicated, has many parts, and is installed and assembled. It is more complicated, assembly efficiency is low, cost is high, and maintenance work such as maintenance is difficult.
  • the object of the present invention is to provide a web paper drawing device, which simplifies the structure, improves stability and reliability, thereby reducing cost, improving the use performance, reducing the pulling force required for paper drawing, improving the user experience, and reducing the required paper performance. Conditions, which in turn reduce costs.
  • a web paper feeding device comprising a drum 2 and a corresponding pressing shaft 5, the winding paper passing between the drum 2 and the pressing shaft 5; the two ends of the drum 2 are mounted on the main shaft portion 701 of the eccentric shaft 7, eccentric Axis 7
  • the paper cutter 601 is mounted on the eccentric portion 702; the drum 2 has a guiding groove 201, and the paper cutter 601 is restrained in the guiding groove 201; the external force pulls the paper roll 1 to drive the drum 2 to rotate, and the drum 2 drives
  • the paper cutter 601 rotates synchronously, and the paper cutter 601 extends under the eccentric shaft 7 along the guiding groove 201 on the drum to extend the curling groove 202 on the drum to cut the paper 1 to establish a paper breaking portion;
  • the knife 601 extends the maximum distance of the drum 2, and the rear drum 2 continues to rotate in the same direction by the return spring 9, and the paper is disconnected at the disconnected portion, and the drum 2 drives the rear paper 1 forward.
  • an eccentric shaft 7 is arranged on the frame and a guiding groove 201 is arranged on the drum.
  • the drum drum drives the fixing seat of the cutter to rotate eccentrically through the spindle of the eccentric shaft, and the cutter is used for the fixing seat. Rotating for the center and simultaneously reciprocating with respect to the guiding groove under the limit of the guiding groove.
  • the cutting knife extends out of the elongated groove 202 on the drum, the cutting action is performed, and the cutting action only establishes the paper breaking portion.
  • the drum When the paper is not completely disconnected, when the drum rotates to the position where the cutter extends the maximum distance, the drum will continue to rotate forward under the action of the return spring 9, and the pulling force of the person will completely break the paper. While the drum is reset, the rear roll paper is driven forward to facilitate the next extraction operation.
  • a support arm 4 is further included, and the roll paper 1 is mounted on the support arm 4.
  • the drum 2 is provided with a plurality of grooves, and corresponding to the rear cover 8 has corresponding ribs, and the gap between the roll paper and the drum 2 is adjusted by setting the gap between the rib and the groove. degree.
  • a rotatable hand wheel 3 is mounted on the rear cover 8, and the hand wheel is geared to the drum 2 for roll paper installation and manual adjustment in an abnormal state.
  • the paper cutter 601 is an elongated triangular sawtooth shape; the drum 2 has a cylindrical shape and is assembled by two semicircular portions, and an elongated slot 202 is formed on the outer surface of the drum. , so that the paper cutter 601 can extend and retract inside the drum.
  • the outer surface of the drum 2 has a soft material to enhance the friction and the adsorption force between the roll paper and the drum, so that the roll paper drives the drum to rotate under the action of friction, thereby completing A paper cutting cycle.
  • the paper cutter 601 has a triangular zigzag shape, and the cutter arms at both ends thereof are limited to the guide grooves 201 on the side of the drum.
  • Figure 1 is a schematic view of a paper feed and paper cutting mechanism of the present invention.
  • Figure 2 is a schematic structural view of the components of the finale, drum and paper cutting system of the present invention
  • Figure 3 is a schematic view of the paper cutting system of the present invention with the paper cutter positioned at the initial position.
  • Figure 4 is a schematic view of the paper cutting system of the present invention with the paper cutter positioned in the second portion.
  • Figure 5 is a schematic view of the paper cutting system of the present invention with the paper cutter positioned in the third portion.
  • Figure 6 is a schematic view of the paper cutting system of the present invention with the paper cutter positioned at the fourth portion.
  • Figure 7 is a schematic view of the paper cutting system of the present invention with the paper cutter positioned in the fifth portion.
  • Figure 8 is a schematic view of the paper cutting system of the present invention with the paper cutter positioned at the sixth portion. At this time, the paper cutter has completed the cutting work, and the drum drum will drive the paper cutter to be reset by the return spring.
  • Fig. 9 is a schematic view showing the structure of a back cover, an eccentric shaft, and the like in the present invention.
  • Fig. 10 is a schematic view showing the paper cutter after the paper cutter is attached.
  • Fig. 11 is a schematic view showing the mounting of the drum on the basis of Fig. 10.
  • Figure 12 is a schematic view showing the mounting of a semicircular portion of the drum on the basis of Figure 10.
  • Figure 13 is a side cross-sectional view of the web paper sheeting device of the present invention.
  • Figure 14 is a schematic view showing the installation of the return spring.
  • Figure 15 is a perspective view of the drum.
  • the support arm 4 is fixed to the frame 8, and the roll paper 1 is mounted on the support arm 4, and the roll paper 1 passes through the gap between the press shaft 5 and the drum 2, and when the external force pulls the end of the paper, the roll paper It will move under the action of friction, and the pressing shaft 5 will provide sufficient friction to make the paper cut better by pressing the paper.
  • the hand wheel 3 is mounted on the frame 8, and at the end of the drum 2, when the new roll paper is initially installed, the roll paper 1 can be moved in one direction (the paper exit direction) by rotating this manual three-wheel.
  • the main shaft portion 701 of the eccentric shaft is fixed to the bracket, and the center hole of the drum 2 is mounted on the main shaft portion 701 of the eccentric shaft to receive the paper drawn from the entire roll of paper.
  • the drum 2 is cylindrical. . When an external force pulls the roll paper, the drum 2 can rotate around the main shaft portion 701 of the eccentric shaft in the paper discharge direction.
  • the drum 2 is composed of two semi-cylindrical portions which are mounted together by a card slot. An elongated groove on the outer surface of the drum 2 allows the cutter to extend and retract into the drum surface.
  • the outer surface of the drum is a soft material to enhance the friction and adsorption force of the roll paper and the drum, so that the roll paper rotates the drum under the action of friction, thereby completing a paper cutting cycle.
  • the paper knife can effectively cut the roll paper.
  • the paper cutter 601 is mounted on the main shaft portion 701 of the eccentric shaft (fixed shaft), and the paper cutter 601 has a triangular tooth shape, and the paper cutter arms at both ends are mounted in the side guide grooves of the drum.
  • the paper cutter also moves along the guide groove of the drum, and the paper cutter rotates around the eccentric portion 702 of the eccentric shaft.
  • the drum 2 is rotated about the main shaft portion 701.
  • the paper cutter 601 is below the outer surface of the drum 2, there is no paper cutting action; when the paper cutter extends out of the outer surface of the drum, the paper cutting starts, and after the paper is cut, the paper cutter is retracted to the wheel. Below the outer surface of the drum, a paper cutting cycle is formed. The specific process is shown in Figure 3-7.
  • Figure 3 shows the paper cutter system retracting below the outer surface of the drum after the paper cutting system has finished cutting the paper.
  • the direction of the arrow is the direction of rotation of the drum.
  • the drum is in a relaxed state and the paper machine is in an initial state. If there is an external force to pull the paper at this time, the paper cutting system moves to Figure 4.
  • Figure 4 shows that when there is an external force to pull the paper, the drum starts to rotate in the direction of the arrow, and the paper cutter also starts to move. At this time, the paper cutter is still below the outer surface of the drum, and the paper has not been cut yet.
  • Figure 5 shows that the paper cutter will now extend beyond the outer surface of the drum and begin the paper cutting action.
  • Figure 6 shows that the paper cutter has completely extended the outer surface of the drum and is cutting the paper.
  • Figure 7 shows that the paper cutting action is about to end and the paper cutter is slowly retracting below the outer surface of the drum.
  • FIG 8 shows that the paper cutting action has ended and the paper cutter continues to retreat below the outer surface of the drum.
  • the drum 2 will continue to rotate forward under the action of the return spring. At this time, the pulling force of the person pulls the paper off, and the drum drum moves upward to bring the paper roll forward, so as to carry out the next extraction operation.
  • FIG. 13 to FIG. 14 mainly show the mounting position of the return spring 9, and in conjunction with FIGS. 3-8, when the paper cutter 601 has the maximum distance of the drum 2, the rear drum 2 continues to rotate in the same direction by the return spring 9 to reset. The paper break portion is completely broken, and the drum 2 drives the rear paper roll 1 to advance.
  • Fig. 15 mainly shows the position and structure of the drum and the guide groove 201 and the elongated groove 202 thereon.
  • the invention provides a mechanical mechanism, which can achieve the performance and function of a similar paper machine, simplify the installation, reliably and stably cut the paper, and reduce the cost of the parts.
  • the paper machine is widely used. Any changes and improvements with substantial cost reduction and efficiency increase will bring great social and economic benefits and high creativity.

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  • Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Replacement Of Web Rolls (AREA)

Abstract

一种卷筒纸抽纸装置，包括轮鼓（2）及与其对应的压轴（5），卷纸（1）从轮鼓（2）与压轴（5）间穿过；轮鼓（2）两端安装在偏心轴（7）的主轴部（701）上，偏心轴（7）的偏心部（702）上安装切纸刀（601）；轮鼓（2）上具有导向槽（201），切纸刀（601）被限位在导向槽（201）内；外力拉动卷纸（1）带动轮鼓（2）转动，轮鼓（2）带动切纸刀（601）同步转动，切纸刀（601）在偏心轴（7）作用下伸出轮鼓（2）细长槽（202）对卷纸（1）进行切割，确立纸张断开部位；切纸刀（601）伸出轮鼓（2）细长槽（202）切断卷纸（1）后，轮鼓（2）在复位弹簧（9）带动之下继续向前转动进行复位，带动纸头伸出机器一段距离以便于实施下一次抽取动作。通过提供一种机械式机构，能达到类似抽纸机的性能和功能，简化安装，切纸可靠稳定，降低零件成本。

Description

一种卷筒纸抽纸装置 技术领域
本发明涉及一种抽纸装置，具体来说，是一种卷筒纸抽纸装置，属于卷筒纸纸巾抽取装置技术领域。
背景技术
纸巾在公共场所和家庭应用非常普遍，用于这类纸巾的抽纸机主要有三种类型。一种是把切好的固定长度的纸巾放置在抽纸机里，当使用者用力抽出一张纸巾的同时下一张纸巾就准备好了；第二种是整卷纸巾的每一段固定长度处有一排打点的小孔以便于使用者拉断；第三种是整卷纸没有打点的小孔，通过抽纸机的各种运动方式来切断出一定固定长度的纸巾。
这三种形式的抽纸机中，第三种形式对于纸张的要求最低，因此经济性较好，但目前现有技术第三种形式的抽纸装置机构过于复杂，零件较多，安装装配过程较复杂，装配效率低，成本高，维修保养等维护工作难度较大。
发明内容
本发明的目的在于提供一种卷筒纸抽纸装置，简化结构，提升稳定性和可靠性，进而降低成本；提升使用性能；降低抽纸所需拉力，提升用户体验，同时降低所需纸张性能条件，进而降低成本。
本发明采取以下技术方案：
一种卷筒纸抽纸装置，包括轮鼓2及与其对应的压轴5，卷纸从轮鼓2与压轴5间穿过；轮鼓2两端安装在偏心轴7的主轴部701上，偏心轴7 的偏心部702上安装切纸刀601；轮鼓2上具有导向槽201，切纸刀601被限位在所述导向槽201内；外力拉动卷纸1带动轮鼓2转动，轮鼓2带动切纸刀601同步转动，切纸刀601在偏心轴7作用下沿轮鼓上的导向槽201伸出轮鼓上的细长槽202对卷纸1进行切割，确立纸张断开部位；切纸刀601伸出轮鼓2最大距离后轮鼓2在复位弹簧9带动下继续同向转动进行复位，所述纸张在断开部位断开，轮鼓2带动后方卷纸1向前进给。
本技术方案主要特点是在机架上设置了偏心轴7与轮鼓上设置了导向槽201，轮鼓通过偏心轴的主轴带动切刀的固定座做偏心转动，同时切刀以所述固定座为中心转动，同时在导向槽的限位下做相对于导向槽的往复运动，当切刀伸出轮鼓上的细长槽202时，实施切割动作，切割动作只是确立纸张断开部位，此时纸张还并没有完全断开，当轮鼓转动到切刀伸出最大距离的位置后，轮鼓会在复位弹簧9的作用下继续向前转动，此时人的拉力将纸张完全拉断，转鼓复位的同时带动后方的卷纸向前进给，以便于实施下一次抽取动作。
进一步的，还包括支撑臂4，卷纸1安装在支撑臂4上。
进一步的，所述轮鼓2上设有若干根凹槽，与之匹配的在后盖8上有对应凸筋，通过设定凸筋与凹槽的间隙调节卷纸与轮鼓2的贴紧程度。
更进一步的，所述后盖8上安装可旋转的手轮3，所述手轮与轮鼓2齿轮连接，用于卷纸安装及异常状态下的手动调节。
进一步的，所述切纸刀601为长条形的三角形锯齿状；所述轮鼓2呈圆柱状，由两个半圆形部分装配而成，在轮鼓外表面上有一条细长槽202，使切纸刀601能伸出和回退到轮鼓里面。
进一步的，轮鼓2外表面具有一层软质材料，以增强卷纸和轮鼓的之间的摩擦力和吸附力，使卷纸在摩擦力的作用下带动轮鼓旋转，从而完成 一个切纸周期。
更进一步的，所述切纸刀601为三角形锯齿形，其两端的切纸刀臂限位在轮鼓侧面的导向槽201内。
本发明的有益效果在于：
1)结构得以简化，提高了抽纸装置装配效率，及工作的稳定性和可靠性，同时带来成本的下降；
2)对拉出纸张所需的力量要求较小，因此纸张容易被拉出，同时纸张被意外撕断情况大大减少，提升了抽纸机的使用性能和使用体验；
3)低拉力要求还提供了使用较低湿强/干强纸张的可能性，可减少用户的纸张使用成本。
4)纯机械控制，无需使用电力。
5)抽纸机使用领域广泛，本发明具有实质性降本增效的改变、改进会带来巨大的社会效益和经济效益。
附图说明
图1是本发明的送纸切纸机构示意图。
图2是本发明的压轴，轮鼓和切纸系统部件的结构示意图；
图3是本发明的切纸系统中，切纸刀位于初始部位时的示意图。
图4是本发明的切纸系统中，切纸刀位于第二部位时的示意图。
图5是本发明的切纸系统中，切纸刀位于第三部位时的示意图。
图6是本发明的切纸系统中，切纸刀位于第四部位时的示意图。
图7是本发明的切纸系统中，切纸刀位于第五部位时的示意图。
图8是本发明的切纸系统中，切纸刀位于第六部位时的示意图，此时切纸刀已完成切割工作，轮鼓在复位弹簧的作用下将带动切纸刀进行复位。
图9是本发明中，后盖及偏心轴等结构的示意图。
图10是在图9的基础上，安装切纸刀后的示意图。
图11是在图10的基础上，安装轮鼓后的示意图。
图12是在图10的基础上，轮鼓安装了一个半圆形部分时的示意图。
图13是本发明卷筒纸抽纸装置的侧面剖视图。
图14是复位弹簧的安装示意图。
图15是轮鼓的立体示意图。
图中，1.卷纸，2.轮鼓，3.手轮，4.支撑臂，5.压轴，6.切纸系统，7.偏心轮，8.机架，9.复位弹簧，201.导向槽，202.细长槽，601.切纸刀，701.偏心轴的主轴部，702.偏心轴的偏心部。
具体实施方式
下面结合附图和具体实施例对本发明进一步说明。
参见图1支撑臂4固定在机架8上，卷纸1安装在支撑臂4上，卷纸1从压轴5和轮鼓2的间隙中穿过，在外力拉卷纸末端的时候，卷纸会在摩擦力的作用下运动，压轴5通过压紧纸从而提供足够的摩擦力以便纸能更好的切断。
参见图1，手轮3安装在机架8上，在轮鼓2的一端，在初始安装新卷纸时，可通过旋转这个手动3轮使卷纸1向一个方向(出纸方向)移动。
参见图9-图12，偏心轴的主轴部701与支架固定，轮鼓2的中心孔安装在偏心轴的主轴部701上，接收从整卷纸里拉出来的纸，轮鼓2是圆柱状的。当有外力拉动卷纸的时候，轮鼓2可以沿出纸方向围绕着偏心轴的主轴部701处旋转。轮鼓2是由两个半圆柱形部分组成，通过卡槽安装在一起。在轮鼓2外表面上有一条细长槽，使切纸刀能伸出和回退到轮鼓里 面。轮鼓外表面是一层较软的材质，以增强卷纸和轮鼓的摩擦力和吸附力，使卷纸在摩擦力的作用下带动轮鼓旋转，从而完成一个切纸周期。同时在轮鼓上有几条凹槽，与之匹配的在后盖上(或底座上)有几条凸出的筋，这样的机构能有效的使卷纸紧贴着轮鼓，从而使切纸刀能有效的切断卷纸。
切纸刀601安装在偏心轴的主轴部701上(固定轴)，切纸刀601是三角形齿形，两端的切纸刀臂安装在轮鼓的侧面导向槽里。当卷纸带动轮鼓转动时，切纸刀通过轮鼓的导向槽也跟着运动，并且切纸刀是围绕着偏心轴的偏心部702处旋转。而轮鼓2是围绕着主轴部701旋转。当切纸刀601在轮鼓2的外表面以下时，没有切纸动作；当切纸刀伸出轮鼓的外表面时，开始进行切纸，切完纸后切纸刀又回退到轮鼓的外表面以下，形成一个切纸循环。具体过程如图3-图7所示。
图3显示的是切纸系统切完纸后切纸刀回退到轮鼓外表面以下，箭头方向是轮鼓的旋转方向。这个时候轮鼓处于放松状态，抽纸机处于初始状态。如果此时有外力拉卷纸，那么切纸系统运动到图4所示。
图4显示的是当有外力拉卷纸时，轮鼓按箭头方向开始转动起来，同时切纸刀也开始运动，此时切纸刀还处于轮鼓外表面以下，尚未开始切纸。
图5显示的是切纸刀此时即将伸出轮鼓外表面，开始切纸动作。
图6显示的是切纸刀已经完全伸出轮鼓外表面，正在切纸。
图7显示的是切纸动作即将结束，切纸刀在慢慢回退到轮鼓外表面以下。
图8显示的是切纸动作已经结束，切纸刀在继续回退到轮鼓外表面以下。轮鼓2会在复位弹簧的作用下继续向前转动，此时人的拉力将纸张拉断，轮鼓向上复位的同时带动后方的卷纸向前进给，以便于实施下一次抽取动作。
图13-图14主要表示出了复位弹簧9的安装位置，结合图3-图8，当切纸刀601轮鼓2最大距离后轮鼓2在复位弹簧9带动下继续同向转动进行复位，所述纸张断开部位完全断开，轮鼓2带动后方卷纸1向前进给。
图15主要表示出轮鼓及其上的导向槽201、细长槽202的位置及结构。
本发明提供一种机械式机构，能达到类似抽纸机的性能和功能，简化安装，切纸可靠稳定，降低零件成本。抽纸机使用领域广泛，任何具有实质性降本增效的改变、改进均会带来巨大的社会效益和经济效益，具有较高的创造性。

Claims (11)

  1. 一种卷筒纸抽纸装置，其特征在于：
    包括轮鼓(2)及与其对应的压轴(5)，卷纸从轮鼓(2)与压轴(5)间穿过；
    轮鼓(2)两端安装在偏心轴(7)的主轴部(701)上并可沿轴心旋转，切纸刀(601)安装在偏心轴(7)的偏心部(702)上并可沿偏心部轴心旋转；
    轮鼓(2)上有导向槽(201)，切纸刀(601)在所述导向槽(201)内随着轮鼓转动变化位置；
    外力拉动卷纸(1)带动轮鼓(2)转动，轮鼓(2)带动切纸刀(601)沿偏心轴的偏心部(702)同步转动，切纸刀(601)沿着导向槽(201)运动对卷纸(1)进行切割，确立纸张断开部位；
    切纸刀(601)沿着导向槽(201)伸出轮鼓最大距离后，所述纸张断开，轮鼓复位弹簧(9)带动轮鼓(2)继续同向转动进行复位，带动后方卷纸(1)向前进给。
  2. 如权利要求1所述的卷筒纸抽纸装置，其特征在于：所述偏心轴固定在外壳或机架(8)上。
  3. 如权利要求2所述的卷筒纸抽纸装置，其特征在于：所述偏心轴与机架(8)合并为同一零件。
  4. 如权利要求1所述的卷筒纸抽纸装置，其特征在于：还包括支撑臂(4)，卷纸(1)安装在支撑臂(4)上。
  5. 如权利要求1所述的卷筒纸抽纸装置，其特征在于：所述轮鼓(2)上设有若干条凹槽，与之匹配的在机架(8)上有对应凸筋，通过设定凸筋与凹槽的间隙调节卷纸与轮鼓(2)的贴紧程度。
  6. 如权利要求2所述的卷筒纸抽纸装置，其特征在于：所述机架(8) 上安装可旋转的手轮(3)，所述手轮与轮鼓(2)通过齿轮连接，用于卷纸安装及异常状态下的手动调节。
  7. 如权利要求6所述的卷筒纸抽纸装置，其特征在于：所述的手轮(3)偏心处装有复位弹簧(9)，弹簧另一端安装在机架(8)。
  8. 如权利要求7所述的卷筒纸抽纸装置，其特征在于：所述的复位弹簧(9)安装于轮鼓(2)与偏心轴(7)之间。
  9. 如权利要求1所述的卷筒纸抽纸装置，其特征在于：
    所述切纸刀(601)为长条形的三角形锯齿状；
    所述轮鼓(2)呈圆柱状，在轮鼓外表面上有一条细长槽(202)，使切纸刀(601)能伸出和回退到轮鼓里面。
  10. 如权利要求1所述的卷筒纸抽纸装置，其特征在于：轮鼓(2)外表面具有一层软质材料，以增强卷纸和轮鼓的之间的摩擦力和吸附力，使卷纸在摩擦力的作用下带动轮鼓旋转，从而完成一个切纸周期。
  11. 如权利要求9所述的卷筒纸抽纸装置，其特征在于：所述切纸刀(601)为三角形锯齿形，安装在偏心轴的偏心部(702)处，其两端的切纸刀臂限位在轮鼓上的导向槽(201)内。
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