JPS631178B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a device for cutting the excess seal portion of a cylindrical bag-made product in which a flat film or sheet is folded into a cylindrical shape and sealed on the back.

(Prior art) Conventionally, as a device for cutting the excess margin of the back sticker of a cylindrical bag product, a receiver is inserted under the excess margin, and a cutting blade is set vertically on the upper surface of the receiver. This led to the creation of devices that cut by bringing the cutting blade into contact with the excess material from above.

(Problem to be solved by the invention) However, in the conventional device described above, in order to stably stand the cutting blade on the upper surface of the holder, it is necessary to provide a sufficient distance between the cutting blade and the tip of the holder. It has been extremely difficult to cut with good appearance because the uncut portion that is left between the root of the surplus and the cutting blade becomes large.

(Means for Solving the Problems, Effects, and Embodiments) The present invention solves the above-mentioned problems and efficiently reduces the margin of sealing part of a cylindrical bag product continuously and even with a small margin of surplus. The purpose of this invention is to provide a device that can be used to cut materials.

The present invention will be explained below with reference to the accompanying drawings.

Fig. 1 is a perspective view showing an example of a device for cutting the excess margin of the seal portion of a cylindrical bag product according to the present invention, Fig. 2 is a plan view of the main part of Fig. 1, and Fig. 3 is a - cross section of Fig. 2. It is a diagram.

As shown in FIGS. 1 to 3, the sealing margin cutting device of the present invention is directed to a sealing margin 3 of a cylindrical bag-made product 2 made by folding a flat sheet into a cylindrical shape and applying a spine sticker 1. , insert the cutting blade 4 into the surplus 3
In a device that advances and cuts a bag-made product 2 while making contact with the blade, a blade receiving part 6 is inserted into the bottom surface of the surplus 3 of the back sticker 1 to cause the surplus 3 of the seal, and a tip of the blade receiving part 6 is used. Cutting blade 4 facing the surface
It is characterized in that a groove 5 is provided on the tip surface of the blade receiving part 6, and the tip of the cutting blade 4 is positioned so as to bite into the groove 5.

That is, in the past, a receiver such as the blade receiver 6 was inserted under the surplus allowance 3 and the cutting blade was vertically abutted from above to cut, resulting in a large amount of uncut material, but in the present invention, the blade receiver 6 Since a surplus is created and cutting is performed from the side thereof, the cutting blade can be brought into contact near the base of the surplus 3, resulting in a small amount of uncut material.

The cylindrical bag-made product 2 of the present invention is made by bending a flat synthetic resin film or sheet into a cylindrical shape, overlapping the ends, and sealing the spine 1 with a seal bar 7. 2 through the nip rolls 8 and 9 and advance.

A base plate 10 is disposed between the nip rolls 8 and 9, and a cutting tool 11 and a cutting blade holder 1 are mounted on this base plate.
2 facing each other, the fixing screw 13 and the adjusting screw 14
It is fixed by A gap 15 is formed between the cutting tool 11 and the cutting blade holder 12 and the base plate 10, and when the cylindrical bag product 2 is in a flat state, this gap 15
It is now possible to progress past 5.

A gap 15 is created by the fixing screw 13 and the adjusting screw 14.
By adjusting the width of the bag, the bag-made product 2 can be kept in a stable progress state. It is preferable to install the cutting tool 11 at an angle with respect to the traveling direction A of the bag-made product 2, as shown in FIG. 2, since this can effectively resist stress accompanying the progress of the bag-made product 2.

A cutting blade 4 is attached to the tip of the cutting tool 11 by a push plate 16.
is fixed, and a groove 5 into which the cutting blade 4 bites is provided in the blade receiving portion 6 on the tip surface of the cutting blade holder 12.

In FIG. 2, the cutting blade 4 is arranged obliquely with respect to the traveling direction A of the bag-made product 2, and the remaining margin 3 is
The cutting edge slightly bites into the groove 5 at the downstream end of the blade receiving part 6 and extends a little further downstream. Since the cutting edge and the blade receiving part 6 are narrow in a V-shape, when the cylindrical bag product 2 is advanced, the surplus 3 of the central seal 1 is raised and supported by the upstream end of the blade receiving part 6. , it is guided to the cutting edge that has bitten into the groove 5, comes into oblique contact with the cutting edge, and is cut. Not only the cutting blade 4 but also the blade receiving portion 6 may be kept diagonally with respect to the traveling direction A.

In addition, in FIG. 2, the cutting blade 4 is located at the downstream end of the blade receiver 6.
is biting into the groove 5, but it may be biting into the middle of the blade receiving part 6. The sealing part surplus 3 is supported by the blade receiving part 6, and the cutting blade 4 bites into the groove and the cutting edge is fixed, so that the state of contact of the cutting blade 4 with the surplus is stable, and the cylindrical Coupled with the fact that the entire bag item advances stably due to the gap 15, cutting of the excess margin 3 can be performed extremely stably. In order to perform this cutting stably, it is desirable to adjust the speed of the nip rolls 8 and 9 on the front and rear sides of the base plate 10 to apply a certain amount of tension to the bag-made product 2 in progress.

The cut surplus 3 is taken up to the Nippuro roll 9 together with the bag-made product as shown in Fig. 1.
It can then be separated and recovered.

(Effects of the Invention) As detailed above, according to the apparatus of the present invention,
This is because the excess margin of the seal part of the cylindrical bag-made product is caused by a blade receiver having a groove on the tip surface, and the cutting blade is bitten into the groove from the other side of the excess margin and comes into contact with the excess margin. In addition to being able to cut extremely stably, the blade holder supports the base of the excess material and allows the cutting blade to be applied very close to the base, leaving little uncut material and making it possible to cut even with a small amount of excess material. This makes it possible to stably produce cylindrical bags with a beautiful appearance.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of a device for cutting the excess margin of the seal portion of a cylindrical bag product according to the present invention, Fig. 2 is a plan view of the main part of Fig. 1, and Fig. 3 is a - cross section of Fig. 2. It is a diagram. 1... Back sticker, 2... Tubular bag product, 3...
...Seal portion margin, 4...Cutting blade, 5...Groove, 6
...Blade holder.

Claims (1)

[Claims] 1. In a device that cuts the excess seal portion of a cylindrical bag product formed by folding a flat sheet into a cylindrical shape and pasting the spine with a seal, the bag product is advanced while a cutting blade is brought into contact with the excess margin. A blade receiving part that is inserted into the lower surface of the leftover part of the pasted seal to cause the leftover part of the seal, and a cutting blade that faces the tip end surface of the blade receiving part, and a groove is provided in the front end face of the blade receiving part, and 1. A device for cutting an excess seal portion of a cylindrical bag product, characterized in that the tip of the cutting blade is positioned by biting into the groove.