JPH11320708A5

JPH11320708A5 -

Info

Publication number: JPH11320708A5
Application number: JP1998146570A
Authority: JP
Filing date: 1998-05-11
Publication date: 2005-08-25

Description

【０００６】
【発明の目的】
この発明は、製袋機の前記従来の問題を解決し、プラスチックフィルムの間欠送り毎に、カッタの上刃を下刃に向かって下降させ、上刃と下刃によってプラスチックフィルムを切断するとき、上刃および下刃の磨耗をともなわず、プラスチックフィルムが的確に切断され、短時間で切断されるようにすることを目的としてなされたものである。 [0006]
[Objective of the Invention]
This invention aims to solve the above-mentioned problems of conventional bag making machines, and to enable the upper blade of the cutter to be lowered toward the lower blade each time the plastic film is intermittently fed, so that when the plastic film is cut by the upper and lower blades , the plastic film can be cut accurately and in a short time without wearing out the upper and lower blades.

【０００７】
【発明の構成】
この発明によれば、プラスチックフィルムの間欠送り毎に、ヒートシール装置によってプラスチックフィルムをヒートシールし、プラスチックフィルムの間欠送り毎に、カッタの上刃を下刃に向かって下降させ、上刃と下刃によってプラスチックフィルムを切断し、これによってプラスチック袋を製造する製袋機において、駆動モータが上刃に連結され、プラスチックフィルムの間欠送り毎に、駆動モータによって上刃が下降および上昇し、プラスチックフィルムが切断される。さらに、制御装置が駆動モータに接続され、制御装置によって駆動モータが不等速駆動され、上刃が上昇および下降するとき、まず、駆動モータが高速駆動される。その後、駆動モータが低速駆動され、その速度をもってプラスチックフィルムの切断が開始され、完了する。さらに、切断の完了後、駆動モータが高速駆動される。 [0007]
[Configuration of the invention]
According to this invention, in a bag making machine that heat-seals a plastic film with a heat-sealing device and lowers an upper blade of a cutter toward a lower blade with each intermittent feed of the plastic film, cutting the plastic film with the upper and lower blades, thereby producing plastic bags, a drive motor is connected to the upper blade, and the drive motor raises and lowers the upper blade with each intermittent feed of the plastic film, cutting the plastic film . A control device is also connected to the drive motor, and the control device drives the drive motor at non-uniform speeds. When the upper blade raises and lowers, the drive motor is first driven at high speed. The drive motor is then driven at low speed, and cutting of the plastic film is initiated and completed at that speed. After cutting is completed, the drive motor is driven at high speed.

Claims

A bag making machine that heat-seals a plastic film with a heat-sealing device each time the plastic film is fed intermittently, lowers an upper blade of a cutter toward a lower blade each time the plastic film is fed intermittently, and cuts the plastic film with the upper blade and lower blade, thereby producing plastic bags,
a drive motor connected to the upper blade for lowering and raising the upper blade to cut the plastic film each time the plastic film is intermittently fed;
a control device connected to the drive motor for driving the drive motor at non-uniform speeds so that, as the upper blade ascends and descends, the drive motor is first driven at high speed and then at low speed, at which cutting of the plastic film is started and completed, and after cutting is completed, the drive motor is driven at high speed .

2. The bag making machine according to claim 1, wherein the upper blade is lowered and raised twice for each intermittent feeding of the plastic film, thereby cutting the plastic film twice .