BACKGROUND OF THE INVENTION

1. Field of the Invention

This invention relates to a portable film packing apparatus, particularly to enable user to quickly release a roll of film with one hand. This invention relates to membrane reel, a roll of film, loading and unloading apparatus, particularly assembled at one side of a main body of a portable film packing apparatus and able to mount or load the membrane reel to the portable film packing apparatus for controlling the membrane reel to release film with proper tightness.

Furthermore, there is a need for a film packing apparatus that allows convenient loading membrane reel, a roll of wrapping film into the film packing apparatus.

2. Description of the Prior Art

U.S. Pat. No. 6,920,742, assigned to Hsie-Man Yu Chen, does not have a membrane release unit, thus, it is not easy to mount or unmount the membrane reel from the film packing apparatus.

That is, a user quite inconvenient to mount or unmount a membrane reel with one hand from the film packing apparatus.

SUMMARY OF THE INVENTION

The objective of the invention is to offer a portable membrane packing apparatus provided with a quick and easy release mechanism to mount the membrane onto the portable membrane packing apparatus. The portable membrane packing apparatus includes a second reel holding unit, spring compression unit and membrane release unit that could be pulled toward a second combining rod for quick and easy mounting and unmounting of the membrane unit. The portable membrane packing apparatus further includes a first and a second roller with different diameters to promote stretching of the membrane unit by increasing membrane tension. The portable membrane packing apparatus further includes a standing unit that allows the portable membrane packing apparatus to stand with the aid of a second combing rod.

According to an aspect of the present invention, a portable film packing apparatus, incudes: a main body including a holding-and-drawing rod at a middle portion of the portable film packing main body, a first combining rod is at one end, and a second combining rod disposed at the other end of the portable film packing main body; a first reel holding unit rotatably attached to the first combining rod; a boss attached to the second combining rod, an elastic body disposed in the bore of the boss; the membrane reel release unit movably attached to the boss; an elastic body compression unit configured to compress the elastic body; a second reel holding unit attached to the elastic body compression unit and faced with the first reel holding unit, and wherein the first reel holding unit and the second reel holding unit maintain a first predetermined distance while holding a membrane reel unit therebetween, wherein the first reel holding unit and the second reel holding unit becomes a predetermined second distance therebetween while holding the membrane release unit by a user to release the membrane reel, and wherein the first predetermined distance is shorter than the second predetermined distance.

Another aspect of present invention, the portable film packing apparatus includes the boss, which includes a pair of membrane release unit limiting elongate grooves formed symmetrically on the boss, respectively, to receive the membrane release unit therethrough.

An another aspect of present invention, the portable film packing apparatus may include the elastic compression unit includes two ends, one end is a closed end formed with a small-diameter bolt head to be inserted through the reel connecting unit hole of the second reel holding unit and screwed with a nut to fix the elastic compression unit with the second reel holding unit and the other end bored with a hollow to receive the elastic body.

An aspect of present invention, the portable film packing may include the elastic compression unit further including its wall axially cut with two symmetrical membrane release unit insert holes for fixing the membrane release unit inserted therethrough.

An aspect of present invention, the portable film packing apparatus may include the elastic body, which is a spring.

An aspect of present invention, the portable film packing apparatus may include the first reel holding unit and the second reel holding unit are rotatably fastened by a bearing and a nut, respectively.

An aspect of present invention, the portable film packing apparatus may include the first reel holding unit and the second reel holding are rotatably fastened by a thrust bearing, a washer and a nut, respectively.

An aspect of present invention, the portable film packing apparatus may include the membrane release unit is in a shape of bar.

An aspect of present invention, a portable film packing apparatus may include a main body including a holding-and-drawing rod at the middle portion of the main body, a first combining rod is at a one end, and a second combining rod disposed at the other end of the main body; a first roller unit having a first roller having its opposite ends respectively fixed with a pair of a first roller unit gears; and a second roller unit having second roller having its opposite ends respectively fixed with a pair of a second roller unit gears, wherein the first roller unit and the second roller unit are provided with the pair of the first roller unit gears and the pair of the second roller unit gears to mesh with each other, wherein a diameter of the first roller is smaller than a diameter of the second roller thereby the first roller unit and the second roller unit are driven to rotate.

An aspect of present invention, the portable packing apparatus may include the first roller unit disposed at a first predetermined distance from the holding-and-drawing rod and the second roller disposed at the second predetermined distance from the hold-and-drawing rod, and wherein the first predetermined distance is longer than the second predetermined distance.

An aspect of present invention, the portable film packing apparatus may include a right roller fixing plate attached to a predetermined position of the first combining rod; and a left roller fixing plate attached to the second combining rod, wherein the first roller unit further includes a first roller shaft and the second roller unit further includes a second roller shaft, and wherein the first roller shaft and the second roller shaft are inserted into the first roller and the second roller, respectively, and attached to the left and the right roller fixing plates.

An aspect of the present invention, a portable film packing apparatus may include a u-shape main body including a holding-and-drawing rod at the middle portion of the main body and a combining rod unit having a first combining rod formed at a one end the holding-and-drawing rod and a second combining rod formed at the other end of the holding-and-drawing rod; a first reel holding unit rotatably formed at a middle of the first combining rod; a second reel holding unit formed at a middle of the second combining rod and faced with the first reel holding unit; and a roller unit formed at an end of the combining rod unit, wherein the roller unit having a first roller unit having a first roller having its opposite ends respectively fixed with a pair of a first roller unit gears and a second roller unit having a second roller having its opposite ends respectively fixed with a pair of a second roller unit gears, wherein the first roller unit and the second roller unit are provided with the pair of the first roller unit gears and the pair of the second roller unit gears to mesh with each other, wherein an angle less than an acute cute is formed between the combing rod unit and the roller unit.

An aspect of present invention, the portable packing apparatus may include a stand unit configured to stand the portable packing apparatus, wherein the stand unit is attached to the first combining rod.

An aspect of present invention, the portable packing apparatus may include the stand unit further includes a portion of the first combining rod.

Other objects, advantages, and salient features of the invention will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses exemplary embodiments of the invention.

