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    • 4. 发明授权
    • Method and arrangement in a bag-making machine for forming weld lines in
a web fed therethrough
    • 制袋机中的方法和布置,用于在其中馈送的网中形成焊接线
    • US5215514A
    • 1993-06-01
    • US946131
    • 1992-09-17
    • Jan FlyghagenRoland Olsson
    • Jan FlyghagenRoland Olsson
    • B29C65/18B31B23/00
    • B31B23/00B29C65/18B29C66/4312B29C66/83421B29C66/83511B29C66/83517B29C66/934B29C66/939B31B2219/028B31B2237/10
    • An arrangement in a bag-making machine for forming weld lines in a web continuously fed through the machine, preferably a flattened plastic film tube, comprises a cylindrical, freely rotatable drum; a driving belt which is adapted to rotate the drum and pressed against part of the circumferential surface of the drum; and a number of transverse sealing jaws which, as the drum rotates, are movable into engagement with and drivable together with the web for welding the web through a predetermined angle of drum rotation. In order to achieve a high speed of the web, preferably about 150 m/min., and high flexibility in respect of the available range of bag length, the sealing jaws are freely movable relative to the drum outside the circumferential surface thereof and controlled by a control device which is adapted to hold each sealing jaw in a stand-by-position out of engagement with the web, and successively to bring each sealing jaw into engagement with the web with a certain time delay relative to each other. The welding is effected over a constant and relatively long welding distance.In a method of producing, in such a bag-making machine, weld lines in a web which is continuously fed through the machine, the sealing jaws are first held in the stand-by position out of engagement with the web and are then brought into engagement with the web and driven around the drum while performing the welding.
    • 用于在连续供给机器的纸幅中形成焊接线的制袋机中的布置,优选为扁平塑料薄膜管,其包括圆筒形,可自由旋转的滚筒; 驱动带,其适于旋转所述滚筒并压靠所述滚筒的所述圆周表面的一部分; 以及当滚筒旋转时,多个横向密封钳口可移动地与卷筒纸啮合并与织物一起驱动,以将卷筒纸以预定的滚筒旋转角度进行焊接。 为了实现纸幅的高速度,优选约150m /分钟,并且在袋长度的可用范围方面具有高柔性,密封钳可以相对于其外周表面上的鼓自由移动,并由 控制装置,其适于将每个密封夹持件保持在与所述幅材不接合的待机位置,并且连续地使每个密封钳口相对于彼此以一定的时间延迟与所述幅材接合。 焊接在恒定和相对较长的焊接距离下进行。 在这种制袋机中,通过机器连续供给的卷材中的焊接线的制造方法,首先将密封爪保持在备用位置,脱离与纸幅的接合,然后进入 在进行焊接时与纸幅接合并围绕滚筒驱动。