WO2011147188A1 - 无芯纸卷复卷机 - Google Patents

无芯纸卷复卷机 Download PDF

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Publication number
WO2011147188A1
WO2011147188A1 PCT/CN2011/000313 CN2011000313W WO2011147188A1 WO 2011147188 A1 WO2011147188 A1 WO 2011147188A1 CN 2011000313 W CN2011000313 W CN 2011000313W WO 2011147188 A1 WO2011147188 A1 WO 2011147188A1
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WO
WIPO (PCT)
Prior art keywords
rewinding
roll
roller
suction
roller body
Prior art date
Application number
PCT/CN2011/000313
Other languages
English (en)
French (fr)
Inventor
黎启标
罗兆波
Original Assignee
佛山市宝索机械制造有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 佛山市宝索机械制造有限公司 filed Critical 佛山市宝索机械制造有限公司
Priority to US13/641,653 priority Critical patent/US8944360B2/en
Priority to EP11785960.3A priority patent/EP2578522B1/en
Priority to RU2012148217/13A priority patent/RU2515725C1/ru
Priority to ES11785960.3T priority patent/ES2632973T3/es
Publication of WO2011147188A1 publication Critical patent/WO2011147188A1/zh

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/2276—The web roll being driven by a winding mechanism of the coreless type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/28—Attaching the leading end of the web to the replacement web-roll core or spindle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H27/00—Special constructions, e.g. surface features, of feed or guide rollers for webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/41419—Starting winding process
    • B65H2301/41425—Starting winding process involving blowing means, e.g. air blast
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/41419—Starting winding process
    • B65H2301/41426—Starting winding process involving suction means, e.g. core with vacuum supply
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/30—Suction means
    • B65H2406/33—Rotary suction means, e.g. roller, cylinder or drum
    • B65H2406/331—Rotary suction means, e.g. roller, cylinder or drum arranged for rotating while moving along material to be handled, e.g. rolling on material

Definitions

  • This invention relates to rewinders, and in particular to rewinders that can be used to produce coreless rolls. Background technique
  • a coreless roll is characterized by the absence of a reel in the middle of the roll.
  • Existing rewinders use a roll of support to complete the winding process when rewinding such rolls.
  • the patent number is
  • the nip between the upper roll and the lower roll must be changed during the process from the roll to the normal roll, resulting in a roll of paper
  • the initial force of the coil is unstable, which is easy to cause the rewinding failure.
  • In the initial stage of rewinding relying on the auxiliary coil to support the paper roll, it is easy to cause uneven force on the paper roll, resulting in serious winding tightness of the core of the paper roll. Uniform (commonly known as "flower core"), which seriously affects the subsequent processing of the paper roll and the quality of the finished product;
  • the rewinding roller moves while rotating at a high speed, and must precisely control the moving distance of the rewinding lower roller, which will inevitably increase the mechanism Complexity and manufacturing cost; 4.
  • the front end of the auxiliary winding plate needs to be made into a comb-tooth type, and the tooth end of the comb tooth is inserted into the ring groove on the cylindrical surface of the rewinding roll, and the cylindrical surface of the rewinding roll is The ring groove will exert a significant indentation on the surface of the paper roll, which seriously affects the appearance quality of the paper roll product.
  • the coreless roll rewinder with the airflow assisted winding comprises a rewinding upper roll and a rewinding lower roll which are parallel to each other, the paper is wound on the rewinding upper roll and is rewinded from the rewinding roll and Passing through the nip between the take-up rolls, a wind pipe blowing downward is provided above the rewinding roll, in particular, the nip between the rewinding roll and the rewinding roll is not more than 10 mm, There are a plurality of air flow passages distributed in the roller body of the upper roll of the rewinding, and a plurality of air flow passages are arranged along the circumferential direction of the roller body, and each air flow passage is connected to a group of suction ports on the surface of the roller body, and the same air flow passage is
  • a certain row of suction ports on the surface of the rewinding roll is located far and near between the rewinding roll and the rewinding roll.
  • the air flow passage in the roller body connected to the suction port of the row is rotated to the air hood
  • the suction port corresponds to the communicating area, and when a certain suction port on the surface of the rewinding roll is close to and far away from the nip between the rewinding upper roll and the rewinding lower roll, the exhaust body of the exhaust port of the reel is connected The air flow passage is rotated to an area deviating from the suction opening of the suction hood.
  • the winding principle of the present invention is that before the paper enters the nip between the rewinding roll and the rewinding lower roll, the suction of the paper on the surface of the upper roll rewinds the paper so that the paper does not rewind with the lower roll.
  • the suction port of the adsorption paper loses the suction force due to the air flow passage in the roller body deviating from the suction hood, and the paper is blown downward in the air duct. Under the action of the air flow, it is bent downward and is in contact with the rotating rewinding roller.
  • the paper Under the action of the rewinding roller to the friction of the paper, the paper is further curled due to the nip between the rewinding and rewinding rollers. Not more than 10 mm, so that the curled paper is blocked by the narrow nip without slipping out of the nip, so that the rewinding upper roll and the rewinding lower roll together act as a smashing effect on the rolled paper, Subsequent passes of the paper continue to wind up as the rolled paper, achieving the roll.
  • the entire rewinding process of the present invention from the winding up to the rewinding does not need to rely on the support of the wrap, nor the nip between the rewinding and rewinding rolls, so the present invention has the following advantages:
  • the paper roll is stable and uniform during the rewinding process and has high reliability;
  • the winding tension of the core of the paper roll is uniform, avoiding the phenomenon of "flower core"; 3.
  • the ring groove is formed on the cylindrical surface of the rewinding lower roller, and the indentation is not pressed on the surface of the paper roll, thereby improving the appearance quality of the paper roll product.
  • Figure 1 is a schematic view showing the structure of an embodiment of the present invention
  • Figure 2 is a left side view of the rewinding upper roll of Figure 1;
  • Figure 3 is an example of another layout of the air flow passage in the roller body of the rewinding upper roller and the suction port on the surface of the roller body;
  • Figure 4 is a left side view of Figure 3;
  • Figure 5 shows another arrangement position of the suction hood
  • Figure 6 is a partial cross-sectional view taken along line A-A of Figure 5;
  • Figure 7 is a schematic view of the winding process of the embodiment shown in Figure 1;
  • FIG. 8 is a schematic structural view of another embodiment of the present invention.
  • the coreless roll rewinder of the present invention is shown in Fig. 1, and includes a rewind upper roll 1 and a rewind lower roll 2 which are parallel to each other.
  • the sheet 3 is wound on the rewind upper roll 1 and passes through the nip M between the rewind upper roll 1 and the rewind lower roll 2.
  • a duct 11 that blows downward is provided above the rewinding roller 2.
  • the nip M between the rewinding upper roll 1 and the rewinding lower roll 2 is not more than 10 mm, but it should not be too small, at least to ensure that the nip M does not get caught in the paper, and that the paper 3 can smoothly pass from the nip M through.
  • each air flow passage In the roll body of the roll 1 is distributed a plurality of air flow passages 4 parallel to the axis of the roller body, and each air flow passage penetrates to the end surface of the roller body.
  • a plurality of air flow passages 4 are arranged at intervals along the circumferential direction of the roller body.
  • Each of the air flow passages 4 communicates with a set of suction ports 5 on the surface of the roller body.
  • a group of suction ports 5 connected by the same air flow channel 4 The rollers are arranged in a row along the length of the roller body, or as shown in FIG. 3 and FIG. 4, a group of suction ports connected by the same airflow passage 4 are arranged in two rows of 5', 5", each.
  • the exhaust ports are arranged along the length of the roller body, and so on, a group of suction ports connected by the same air flow passage can also be arranged in more rows.
  • the "arranged along the length of the roller body” It is not required that the alignment direction be parallel to the axis of the roller body, but may have a certain helix angle.
  • each row of suction ports 5 are arranged along the circumferential direction of the roller body.
  • the suction hood 6 is fixed at the end face of the roll 1 on the approaching rewinding.
  • the suction hood 6 is connected to a vacuuming device (not shown) to cause the suction hood 6 to generate a negative pressure.
  • the suction opening of the suction hood 6 faces the end surface of the rewinding upper roller 1.
  • each of the air flow passages 4 is in communication with and disconnected from the suction opening of the suction hood 6 in accordance with the rotation of the rewinding upper roller 1.
  • the air flow passage 4 in Fig. 1 can be connected to both end faces of the rewinding upper roll 1 or only to one end face of the rewinding upper roll 1; accordingly, the suction hood 6 can be arranged on the rewinding upper roll Both ends of 1 may be disposed only at one end of the rewinding upper roll 1.
  • the suction hood 6 can also be arranged as shown in Figs. 5 and 6 at a position close to the cylindrical surface of the rewinding upper roll 1 and near the end of the roll body.
  • the suction opening of the suction hood 6 faces the cylindrical surface of the roller body. Accordingly, the air flow passage 4 in the roller body communicates with the suction hood 6 on the cylindrical surface of the roller body as shown in Fig. 6.
  • the end of the sheet 3 in Fig. 1 on the right side of the rewinding roll 1 is formed by the end of the paper roll which is completed by the rewinding of the previous roll.
  • the specific paper breaking method can be, for example, the platen roller 7 Connected to a sudden acceleration transmission, after rewinding a roll of paper, the paper feed roller 7 is instantaneously accelerated by a sudden acceleration transmission, thereby causing the paper roll to instantaneously accelerate, thereby breaking the paper at the end of the paper roll.
  • the suction port of the paper is adsorbed, for example, one of the suction ports 5b, because the air flow passage 4b in the roller body is deviated from the suction hood 6, and the suction is lost.
  • the paper is immediately bent downward by the airflow blown downward by the air duct 11 and is in contact with the rotating rewinding roller 2, and under the action of the rewinding roller 2 against the paper friction, the paper is further curled to form Fig.
  • the diameter of the paper roll is gradually increased, and then the rewinding upper roller 1, the rewinding lower roller 2, and the platen roller 7 are used to rotate the paper roll, and the paper at the end of the paper roll is broken after the rewinding is completed. , forming a new paper head.
  • an air flow passage similar to that of the rewinding upper roller, an air suction port, and an air suction hood can be added to the rewinding lower roller 2.
  • a plurality of air flow passages 8 are distributed in the roller body of the rewinding lower roller 2, and each of the air flow passages 8 communicates with a set of suction ports 9 on the surface of the roller body.
  • the arrangement of the air flow passage 8 and the suction port 9 is the same as that of the air flow passage 4 and the suction port 5 of the rewinding upper roller 1, and will not be described again.
  • a second suction hood 10 is disposed at a position close to the end of the rewinding roller 2, and as the rewinding roller 2 rotates, a certain row of suction ports on the surface of the lower roller is rewinded, for example, a row in FIG.
  • the suction port 9a from far and near to the rewinding upper roller 1 and When the nip between the lower rolls 2 is rewinded, the air flow passage 8a in the roller body communicated with the suction port 9a is rotated to a region corresponding to the suction port of the second suction hood 10, so that the entire exhaust port 9a generates suction when rewinding a certain row of suction ports on the surface of the lower roller, such as a row of suction ports 9b in Fig.
  • each of the air flow passages 8 is in communication with and disconnected from the suction opening of the second suction hood 10 in accordance with the rotation of the rewinding lower roller 2.
  • This improvement is equivalent to enhancing the friction of the rewinding roll 2 on the paper, further improving the reliability of the unwinding.

Landscapes

  • Replacement Of Web Rolls (AREA)
  • Winding Of Webs (AREA)
  • Advancing Webs (AREA)
  • Paper (AREA)

Description

无芯纸卷复卷机 技术领域
本发明涉及复卷机， 特别是可用于生产无芯纸卷的复卷机。 背景技术
无芯纸卷的特点是纸卷的中间没有卷轴。现有的复卷机在复卷这 类纸卷的时候借助一块助卷板来完成起卷过程。 例如专利号为
94101338.3、 名称为 "具有在卷绕过程中支持卷筒的表面， 用于带材 卷筒无芯卷绕的改进的重复卷绕机"的专利， 其所公开的复卷机在起 卷阶段将复卷上辊和复卷下辊 （此专利中称为 "卷绕滚轮 1、 3 ") 临 时靠拢在一起， 并且依靠一块助卷板（此专利中称为 "支持表面 21 ") 将纸张头部从复卷下辊铲起， 如此才能实现起卷， 起卷后还需将复卷 上辊和复卷下辊复位至正常位置才能继续复卷。这种依赖助卷板起卷 的复卷机存在以下问题： 1、 从起卷到正常复卷的过程中必须改变复 卷上辊和复卷下辊之间的辊隙， 导致纸卷在复卷的初期受力不稳定， 容易造成复卷失败； 2、 在复卷的初期依靠助卷板支撑纸卷， 容易造 成纸卷受力不均匀，导致纸卷芯部的卷绕松紧度严重不均匀（俗称 "花 芯"）， 严重影响纸卷的后续加工和成品质量； 3、 复卷下辊一边高速 旋转一边移动， 并且必须精确控制复卷下辊的移动距离， 这样势必增 加了机构的复杂性和制造成本； 4、 助卷板的前端需要做成梳齿型， 而且梳齿的齿端插入开设在复卷下辊圆柱面上的环槽内，而复卷下辊 圆柱面上的环槽会在纸卷的表面压出明显的压痕，严重影响纸卷产品 的外观质量。 发明内容
本发明的目的是提供一种以气流辅助起卷的无芯纸卷复卷机。 本发明是这样实现的：以气流辅助起卷的无芯纸卷复卷机包括相 互平行的复卷上辊和复卷下辊，纸张绕在复卷上辊上并且从复卷上辊 和复卷下辊之间的辊隙中经过，在复卷下辊的上方设置有朝下吹风的 风管， 特别地， 复卷上辊和复卷下辊之间的辊隙不大于 10毫米， 在 复卷上辊的辊体内分布有多条气流通道，多条气流通道沿着辊体的圆 周方向间隔排列， 每一条气流通道连通至辊体表面的一组吸气口， 同 一条气流通道所连通的一组吸气口在辊体表面排列成一排或多排，每 一排吸气口沿着辊体的长度方向排列，各排吸气口沿着辊体的圆周方 向间隔排列， 在靠近复卷上辊端部的位置设置有吸风罩， 随着复卷上 辊的旋转，当复卷上辊表面的某排吸气口由远及近靠近复卷上辊和复 卷下辊之间的辊隙时，该排吸气口所连通的辊体内的气流通道转动至 与吸风罩的吸风口对应连通的区域，当复卷上辊表面的某排吸气口由 近及远远离复卷上辊和复卷下辊之间的辊隙时，该排吸气口所连通的 辊体内的气流通道转动至与吸风罩的吸风口偏离的区域。
本发明的起卷原理是：在纸张进入到复卷上辊和复卷下辊之间的 辊隙之前，复卷上辊表面的吸气口对纸张的吸力使纸张不会与复卷下 辊接触， 当纸张随着复卷上辊的转动而经过所述辊隙后， 吸附着纸张 的吸气口因辊体内的气流通道偏离吸风罩而丧失吸力，于是纸张在风 管向下吹出的气流的作用下朝下弯曲并且与转动着的复卷下辊接触， 在复卷下辊对纸张摩擦力的作用下， 纸张进一步卷曲， 由于复卷上辊 和复卷下辊之间的辊隙不大于 10毫米， 因此卷曲的纸张受到此窄小 辊隙的阻挡而不会从此辊隙中滑出，于是复卷上辊和复卷下辊一起对 卷起的纸张起到揉搓的作用，使得后续传过来的纸张随着卷起的纸张 继续卷绕， 实现起卷。
本发明从起卷到复卷完毕的整个复卷过程都不需要依赖助卷板 的支撑， 也无需改变复卷上辊和复卷下辊之间的辊隙， 因此本发明具 有以下优点： 1、纸卷在复卷过程中受力稳定而且均匀，可靠性高； 2、 纸卷芯部的卷绕松紧度均匀， 避免产生 "花芯"现象； 3、 无需设置 令复卷下辊一边高速旋转一边移动的机构，有利于降低机构的复杂性 和制造成本； 4、 无需在复卷下辊的圆柱面上开设环槽， 不会在纸卷 的表面压出压痕， 提高了纸卷产品的外观质量。 附图说明
图 1是本发明的一种实施例的结构示意图；
图 2是图 1中的复卷上辊的左视图；
图 3 是复卷上辊的辊体内的气流通道以及辊体表面的吸气口的 另一种布局示例；
图 4是图 3的左视图；
图 5表示吸风罩的另一种布置位置；
图 6是图 5的 A-A局部剖视图；
图 7是图 1所示实施例的起卷过程示意图；
图 8是本发明的另一种实施例的结构示意图； 具体实施方式
本发明所述的无芯纸卷复卷机如图 1示，包括相互平行的复卷上 辊 1和复卷下辊 2。 纸张 3绕在复卷上辊 1上并且从复卷上辊 1和复 卷下辊 2之间的辊隙 M中经过。在复卷下辊 2的上方设置有朝下吹风 的风管 11。 复卷上辊 1和复卷下辊 2之间的辊隙 M不大于 10毫米， 但也不能太小， 至少要保证辊隙 M不会夹到纸张， 保证纸张 3能从 辊隙 M中顺利经过。 在复卷上辊 1的辊体内分布有多条平行于辊体 轴线的气流通道 4， 每条气流通道贯通至辊体的端面。 多条气流通道 4沿着辊体的圆周方向间隔排列。 每一条气流通道 4与辊体表面的一 组吸气口 5连通。
同时参见图 1、 图 2， 同一条气流通道 4所连通的一组吸气口 5 在辊体表面沿着辊体的长度方向排列成一排， 或者也可以如图 3、 图 4那样， 同一条气流通道 4所连通的一组吸气口排列成两排 5'、 5"， 每排吸气口沿着辊体的长度方向排列， 以此类推， 同一条气流通道所 连通的一组吸气口还可以排列成更多排。所述的 "沿着辊体的长度方 向排列"并非要求排列方向必须与辊体的轴线平行， 而是可以有一定 的螺旋角。
参见图 1， 各排吸气口 5沿着辊体的圆周方向间隔排列。 在逼近 复卷上辊 1的端面处固定有吸风罩 6。 吸风罩 6与抽真空设备（图中 未示出）连接， 使吸风罩 6产生负压。 吸风罩 6的吸风口朝向复卷上 辊 1的端面。 随着复卷上辊 1的旋转， 当复卷上辊 1表面的某排吸气 口， 例如图 1 中的一排吸气口 5a， 由远及近靠近复卷上辊 1和复卷 下辊 2之间的辊隙时， 该排吸气口 5a所连通的辊体内的气流通道 4a 转动至与吸风罩 6的吸风口对应连通的区域， 使得整排吸气口 5a产 生吸力； 当复卷上辊 1表面的某排吸气口， 例如图 1中的一排吸气口 5b， 由近及远远离复卷上辊 1和复卷下辊 2之间的辊隙时， 该排吸气 口 5b所连通的辊体内的气流通道 4b转动至与吸风罩 6的吸风口偏离 的区域， 使得整排吸气口 5b丧失吸力。 如此， 各条气流通道 4随着 复卷上辊 1的旋转轮流与吸风罩 6的吸风口连通和断开。
图 1中的气流通道 4既可以连通至复卷上辊 1的两个端面，也可 以只连通至复卷上辊 1的一个端面； 相应地， 吸风罩 6既可以布置在 复卷上辊 1的两端， 也可以只布置在复卷上辊 1的一端。
吸风罩 6也可以如图 5、 图 6所示布置在逼近复卷上辊 1的圆柱 面并且靠近辊体端部的位置处。 吸风罩 6 的吸风口朝向辊体的圆柱 面。相应地， 辊体内的气流通道 4如图 6所示在辊体的圆柱面与吸风 罩 6连通。
图 1中的纸张 3在复卷上辊 1右边的端头是由上一卷复卷完成的 纸卷的尾部纸张断开后形成的。 具体的断纸方式例如可以将压纸辊 7 与一个突变加速变速器连接， 在复卷完成一卷纸卷后， 通过突变加速 变速器令压纸辊 7瞬间加速， 以此带动纸卷瞬间加速， 从而将纸卷尾 部的纸张拉断。
下面结合附图说明图 1所示实施例的起卷原理。在纸张进入到复 卷上辊和复卷下辊之间的辊隙之前， 也就是说在图 1中辊隙 M的左 边， 复卷上辊表面的一排吸气口 5a及其左边的两排吸气口与吸风罩 6的吸风口连通而产生吸力，使纸张在进入辊隙 M之前不会与复卷下 辊 2接触， 当纸张随着复卷上辊 1的转动而经过辊隙 M后， 也就是 说在图 1中辊隙 M的右边， 吸附着纸张的吸气口， 例如其中一排吸 气口 5b， 因辊体内的气流通道 4b偏离吸风罩 6而丧失吸力， 于是纸 张在风管 11 向下吹出的气流的作用下立即朝下弯曲并且与转动着的 复卷下辊 2接触， 在复卷下辊 2对纸张摩擦力的作用下， 纸张进一步 卷曲， 形成图 7所示状态， 此后， 由于复卷上辊和复卷下辊之间的辊 隙 M不大于 10毫米， 因此卷曲的纸张受到辊隙 M的阻挡而不会向左 滑出辊隙 M,于是复卷上辊 1和复卷下辊 2—起对卷起的纸张起到揉 搓的作用， 使得后续传过来的纸张随着卷起的纸张继续卷绕， 实现起 卷。
起卷后， 纸卷直径逐渐增大， 再由复卷上辊 1、 复卷下辊 2以及 压纸辊 7 —起夹着纸卷转动， 直至复卷完成后将纸卷尾部的纸张拉 断， 形成新的纸张头部。
作为本发明的改进方案，可为复卷下辊 2增设与复卷上辊类同的 气流通道、 吸气口以及吸风罩。如图 8所示， 在复卷下辊 2的辊体内 分布有多条气流通道 8， 每一条气流通道 8连通至辊体表面的一组吸 气口 9。 气流通道 8以及吸气口 9的排列方式与复卷上辊 1的气流通 道 4、 吸气口 5相同， 不再赘述。 在靠近复卷下辊 2端部的位置设置 有第二吸风罩 10， 随着复卷下辊 2的旋转， 当复卷下辊表面的某排 吸气口， 例如图 8中的一排吸气口 9a， 由远及近靠近复卷上辊 1和 复卷下辊 2之间的辊隙时， 该排吸气口 9a所连通的辊体内的气流通 道 8a转动至与第二吸风罩 10的吸风口对应连通的区域，使得整排吸 气口 9a产生吸力， 当复卷下辊表面的某排吸气口， 例如图 8中的一 排吸气口 9b， 由近及远远离复卷上辊 1和复卷下辊 2之间的辊隙时， 该排吸气口 9b所连通的辊体内的气流通道 8b转动至与第二吸风罩 10的吸风口偏离的区域。 如此， 各条气流通道 8随着复卷下辊 2的 旋转轮流与第二吸风罩 10的吸风口连通和断开。
如此改进后， 相当于增强了复卷下辊 2对纸张的摩擦力， 进一步 提高了起卷的可靠性。

Claims

权利要求书
1、 以气流辅助起卷的无芯纸卷复卷机， 包括相互平行的复卷上 辊和复卷下辊，纸张绕在复卷上辊上并且从复卷上辊和复卷下辊之间 的辊隙中经过，在复卷下辊的上方设置有朝下吹风的风管，其特征是: 复卷上辊和复卷下辊之间的辊隙不大于 10毫米， 在复卷上辊的辊体 内分布有多条气流通道， 多条气流通道沿着辊体的圆周方向间隔排 歹 ϋ， 每一条气流通道连通至辊体表面的一组吸气口， 同一条气流通道 所连通的一组吸气口在辊体表面排列成一排或多排，每一排吸气口沿 着辊体的长度方向排列， 各排吸气口沿着辊体的圆周方向间隔排列， 在靠近复卷上辊端部的位置设置有吸风罩， 随着复卷上辊的旋转， 当 复卷上辊表面的某排吸气口由远及近靠近复卷上辊和复卷下辊之间 的辊隙时，该排吸气口所连通的辊体内的气流通道转动至与吸风罩的 吸风口对应连通的区域，当复卷上辊表面的某排吸气口由近及远远离 复卷上辊和复卷下辊之间的辊隙时，该排吸气口所连通的辊体内的气 流通道转动至与吸风罩的吸风口偏离的区域。
PCT/CN2011/000313 2010-05-24 2011-02-25 无芯纸卷复卷机 WO2011147188A1 (zh)

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