Airtight vacuum packaging machine

Abstract

The present invention provides a vacuum packaging machine with a locking mechanism that automatically releases the cutter plate when the tray base unit is placed on the mounting surface, and automatically locks the cutter plate when the tray base unit is removed from the mounting surface. [Solution] In the embodiment of the airtight vacuum packaging machine, a tray on which the items to be packaged are placed is placed on a tray base unit 210 set in a chamber, and the chamber is vacuumed while the tray base unit is covered with film, and a cutter plate 290 provided on the lower side is instantly lifted to cut the excess film. In this airtight vacuum packaging machine, a lock / unlock mechanism 500 is provided that automatically releases the lock on the cutter plate when the tray base unit, which is locked so that the pattern cutter 240 attached to the cutter plate does not come out of the tray base unit, is placed on the mounting surface of the chamber, so that the excess film can be cut.

Claims

1. In a vacuum packaging machine in which a tray containing the items to be packaged is placed on a tray stand unit set inside a chamber, and the chamber is then vacuumed while the tray is covered with film, a cutter plate located at the bottom is instantly lifted to cut off the excess film, A close-fitting vacuum packaging machine characterized by having a lock / unlock mechanism that automatically releases the lock on the cutter plate when the tray base unit, which is locked to prevent the pattern cutter attached to the cutter plate from coming out of the tray base unit, is placed on the mounting surface of the chamber, thereby enabling the cutting of the excess film.

2. The tight-fitting vacuum packaging machine according to claim 1, characterized in that the lock / unlock mechanism automatically locks the cutter plate so that it does not move when the tray base unit is pulled out from the mounting surface of the chamber.

3. The aforementioned lock / unlock mechanism is A locking fixing part is attached to the side of the cutter plate and has a locking hole, A support portion is mounted vertically to the tray stand unit, A locking movable part having a locking portion at its tip that engages with the locking hole and a contact portion at its rear end that abuts against the mounting surface of the chamber, A coil spring is installed between the upper part of the support portion and the central part of the locking movable portion, A close-fitting vacuum packaging machine according to claim 1 or 2, characterized by having the following features.

4. The locking movable part is rotatably attached to the support part. The airtight vacuum packaging machine according to claim 3, characterized in that the locking portion of the movable locking portion is biased by the coil spring in a direction that engages with the locking hole of the fixed locking portion.

5. When the tray base unit is not placed on the mounting surface of the chamber, the locking portion maintains its locking position in the locking hole. The airtight vacuum packaging machine according to claim 4, characterized in that the locking portion is biased toward the locking hole by the coil spring, and is shaped to lock so that the pattern cutter of the cutter plate does not come out of the tray base unit.

6. The airtight vacuum packaging machine according to claim 4, characterized in that when the tray base unit is placed on the mounting surface of the chamber, the contact portion is lifted upward, causing the locking movable portion to rotate, the locking portion to disengage from the locking hole, and the lock is released, resulting in a shape that allows the excess film to be cut.

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