JP2567353Y2 - Cutter device for tubular film - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention is used in the technical field of an automatic packaging machine for a tubular film, which seals and packs various kinds of fillers by using a tubular film. The present invention relates to a tubular film cutter device capable of forming an entrance for filling a filling material on the surface side of the tubular film in a lateral direction.

[0002]

2. Description of the Related Art A packing film is formed in a tube shape in advance, and the packing material is filled in order from an inlet cut into the surface (one side surface) of the tube film at intervals.
In addition, an automatic packaging machine for a tubular film, which is configured so that the entrance is sealed with a horizontal seal after filling and the sealing bag is cut at the center of the horizontal seal, does not require a vertical sealer for vertically sealing the packaging film. Conventionally, it has been widely used for various kinds of powder or solid seal packaging in that the seal packaging can be performed only by the horizontal sealer and the configuration of the entire packaging machine can be simplified.

Further, in order to cut the entrances into the surface of the tubular film at intervals, two upper and lower guide rods are installed in parallel with the film rod over which the tubular film extends, and the guide rods are formed on the upper and lower guide rods. By mounting the cutter block with the cutter attached and moving the cutter block laterally along the guide rod, the cutter cuts the surface side of the tubular film suspended on the film rod with the cutter. A cutter device for a tubular film, which is configured to form an inlet of the film, has been used.

[0004]

However, in the case of the conventional tubular film cutter apparatus constructed as described above, in order to cut the entrance accurately, a cutter block is provided for the film rod for passing the tubular film. It is necessary to always keep the two guide rods completely parallel to each other, but this adjustment work is very troublesome, and even if it is adjusted to be parallel, the misalignment occurs immediately, and the cutter is not disturbed due to the misalignment between the rods. The film on the back side may be cut together with the film on the front side because it hits the film too strongly, or the contact of the cutter may be too weak to cut the entrance completely, Failure may result in wasting a lot of film or failure such as leakage of seals in the seal packaging by the above-mentioned automatic packaging machine for tubular film. There has been a variety of problems.

[0005] Therefore, a technical problem of the present invention is to provide a cutter device which can always cut and form an inlet for filling a tubular film accurately without performing troublesome and difficult adjustment of the interval between rods. It is to be.

[0006]

Means taken by the present invention to solve the above technical problems are as follows. H
After cutting the front side of the tubular film hung on the film rod horizontally, the left and right sides of this film are
To move both chucks slightly inward
Therefore, while opening the cut entrance greatly,
Fill the filling from the open entrance and then
Move the lock to the outside to close the entrance, and over this closed entrance
In the lateral heat sealer by lateral sealing at the configured tubular film for automatic packaging machines to seal packaging, extending parallel to and spaced a guide rod and the slide rod up and down with respect to (1) above the film rods A cutter block is attached to the slide rod so that the upper end side thereof can move forward and backward with respect to the film rod, and the cutter block is reciprocated in the axial direction of the slide rod by moving means. With the configuration, at the upper end of the cutter block, a cutter that cuts the surface side of the tubular film stretched over the film rod in accordance with the movement of the cutter block to form the entrance , A guide rod that guides the blade edge of the cutter in contact with the front surface of the tubular film so that it does not reach the back side of the tubular film. Attaching La. (2) On the back side of the cutter block, the surface of the guide rod is constantly pressed by the elastic force of the spring.
A rolling roller capable of pushing the cutter block toward the film rod while rolling in the axial direction is provided .

[0007]

The above means operates as follows. The above element (1) is formed by using a tubular film.
In sealing packaging , the cutter block is moved laterally along the slide rod, so that the front side of the tubular film suspended on the film rod is cut laterally to form an inlet for filling. In addition, the guide roller is in contact with the surface of the tubular film so that the cutting edge of the cutter does not reach the back side of the film. To be able to

The factor (2) is such that the cutter roller is always pressed against the film rod while the rolling roller rolls in the axial direction by receiving the elastic force of the spring. Even if there is some deviation, the cutter can always follow the change of the rod and the cutter and guide roller can be pressed against the surface of the tubular film with the same pressing force. It is possible to form a cut. As described above, the technical problems described above can be solved by the above means, and the problems of the conventional technology can be solved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the above-described cutter for a tubular film according to the present invention will be described in detail with reference to the accompanying drawings. FIG. 1 is a block diagram illustrating the flow of a tubular film in an automatic packaging machine for a tubular film implementing the cutter device for a tubular film according to the present invention. In the figure, CFR indicates a tube wound in a roll. A tubular film CF drawn from the roll CFR is wound around film rods X, Y and Z, and then a pair of upper and lower film feed rollers PA and PB.
Is fed between the front and rear horizontal heat sealers HC, HC. Here, both sides of the film CF are sandwiched between the left and right lever chucks CK, CK, and both chucks CK, CK are slightly moved inward. As shown in FIG. 5, the inlet CR cut at intervals on the surface CFa side of the tubular film CF is formed as a greatly expanded filling port CFO as shown in FIGS. 1 and 5, and the expanded filling port CFO is formed. A structure in which the filler is filled through a shooter (not shown) as indicated by an arrow N is formed.

Further, the above-mentioned lever chucks CK, CK
When the filling of the filling material is completed, the tubular film CF moves right and left outward and extends left and right with the filling port CFO closed, and the front and rear horizontal heat sealers HC and HC extend from both front and rear sides of the expanded film surface. However, as shown in FIG. 2, a horizontal seal HS is performed to close the filling port CFO, and a cutting means (not shown) using a hot wire (piano wire) or the like cuts the center cut line CT of the horizontal seal HS up and down. By doing so, a tubular seal bag CFP on which the horizontal seals HSb and HSa are applied vertically is formed as a seal.

[0011] The cutter device for a tubular film according to the present invention is an automatic packaging machine as shown in FIG.
As shown in the figure, a cutter is inserted from the direction of arrow T into the surface CFa of the tubular film CF suspended on the film rod Z to form the entrance CR shown in FIG. 5 at a constant interval in the lateral direction of the surface CFa. The detailed structure will be described below with reference to the side sectional view shown in FIG. 3 and the plan view shown in FIG.

In FIGS. 3 and 4, reference numerals 2 and 10 denote a slide rod and a guide rod which are installed in parallel with the above-mentioned film rod Z at an interval vertically, and 1 denotes a slide rod. On the other hand, a cutter block having a lower end portion attached thereto is shown. The cutter block 1 is capable of moving forward and backward (rotating toward and away from) the film rod Z on the upper front surface 1a side, and is provided with a guide rod 2. It is pivotally and slidably mounted on the guide rod 2 so that it can reciprocate in the axial direction.

A guide roller 4 is rotatably mounted on the upper front surface 1a of the cutter block 1 by a mounting shaft 3. A guide roller 5 is also mounted on the upper front surface 1a of the cutter block 1 by a holder 1b. The cutter 5 forms an inlet CR for filling in a lateral direction on the surface CFa side of the tubular film CF which is stretched over the film rod Z in accordance with the lateral movement of the cutter block 1. The above guide roller 4
In accordance with the lateral movement of the cutter block 1, the cutter 5 rolls while pressing the front surface CFa of the tubular film CF wound on the film rod Z, so that the cutting edge 5 a of the cutter 5 does not reach the back surface CFb of the tubular film CF. It is a mechanism to guard against.

Reference numeral 6 denotes a cutter adjusting rod fitted on the upper portion of the cutter block 1.
When the adjusting screw 7 screwed into the inside is rotated by operating the external dial 8, the adjusting rod 6 moves forward and backward, and the cutter 5 engaged with the hook 6a also moves forward and backward, so that the cutting edge 5a projects. It is a mechanism that can adjust the amount. still,
Reference numeral 7a denotes a ring (flange) for preventing the adjustment screw 7 from moving in the axial direction.

Reference numeral 9 denotes a pressing rod having a rectangular cross section which is fitted into a fitting hole 1c formed in the back surface of the cutter block 1 so as to be able to protrude and retract, and 9R is rotatably mounted on the tip of the pressing rod 9. 4 shows a mounted rolling roller. 9S is the fitting hole 1
c, which is a compression spring fitted inside
Pushes the pressing rod 9 outward at all times to press the peripheral surface of the rolling roller 9R against the guide rod 10 described above, and the reaction force causes the entire cutter block 1 to rotate leftward in FIG. Surface CFa of tubular film CF in which cutting edge 5a of cutter S and guide roller 4 are wound around film rod Z
It is designed to always press against the side with the same force.

Although the drawing does not show a device for reciprocating the cutter block 1 in the axial direction of the slide rod 2, the device for this movement is fitted into the slide rod 2 in accordance with the supply of air. A magnet groove is formed on the peripheral surface, such as a magnet type that moves the inserted magnet and reciprocates the cutter block 1 according to the attractive force of the magnet, a cylinder type that reciprocates the cutter block 1 by the force of hydraulic pressure or compressed air, or the like. There is a cylindrical cam type or the like that reciprocates the cutter block 1 by rotating the slide rod 2 with a motor, but the selection is arbitrary.

Since the tubular film cutter according to the present invention has the above-described structure, the moving device moves the cutter block 1 while intermittently feeding the tubular film CF wound on the film rod Z at a constant speed. If the film 5 is moved laterally along the slide rod 2 while the feed of the film CF is stopped, the cutter 5 can cut and form an inlet CR for filling in the surface CFa of the tubular film CF. In this cut formation, since the guide roller 4 is in contact with the front surface CFa of the film and guards so that the cutting edge 5a of the cutter 5 does not reach the rear surface CFb of the film, the tubular film CF can enter only the front surface CFa. CR is cut and formed,
Cutting to Fb can be prevented.

In forming the entrance CR by the cutter 5, the rolling roller 9R is pressed against the surface of the guide rod 10 and rolled by the resilient force of the spring 9S. By pressing the guide roller 4 firmly against the surface CFa of the tubular film CF, the cutter 5 can accurately form the cut of the entrance CR.

[0019]

As described above, according to the tubular film cutter device of the present invention, the filling inlet is always provided on the front side of the tubular film without the need for troublesome parallel adjustment of the rod. it is possible to accurately cut form, the by that you use incorporated into tubular film for automatic packaging machines which, with formation of an inlet for filling the tubular film, series manner filling and sealing molding of packing Thus, it is possible to produce a seal product using a tubular film accurately in a short time and at the same time, at a very low cost, which is extremely economical.

[Brief description of the drawings]

FIG. 1 is a configuration diagram illustrating a flow of a film in an automatic packaging machine that implements a tubular film cutter device according to the present invention.

FIG. 2 is a configuration diagram showing a state of a horizontal seal with respect to a tubular film.

FIG. 3 is a side sectional view of the present invention.

FIG. 4 is a plan view of the present invention.

FIG. 5 is a perspective view of a tubular film having an inlet formed by cutting according to the present invention;

[Explanation of symbols]

 CF Tubular film CFa Front side CFb Back side CR Filling inlet HC Horizontal seal Z Film rod 1 Cutter block 2 Slide rod 4 Guide roller 5 Cutter 9 Press rod 9S Spring 9R Rolling roller 10 Guide rod

Claims (1)

(57) [Scope of request for utility model registration] 1. After cutting the surface side of a tubular film suspended on a film rod horizontally, the left side of the film is cut.
Both right sides are sandwiched between left and right chucks and both chucks are slightly inside.
When you open the cut entrance wide by moving to
In both cases, the filler is filled from this wide open inlet ,
Then, move the left and right chucks outward to close the entrance,
In an automatic packaging machine for a tubular film, which is configured such that the closed inlet is horizontally sealed by a horizontal heat sealer and sealed and packaged, a guide rod and a slide rod are vertically spaced from the above film rod . A cutter block is mounted on the slide rod so as to be rotatable so that the upper end of the cutter block moves forward and backward with respect to the film rod, and the cutter block is reciprocated in the axial direction of the slide rod by moving means. And a cutter that cuts the surface side of the tubular film that is hung over the film rod in accordance with the movement of the cutter block to form the entrance, and a tube-shaped cutter at the upper end of the cutter block. A guide that guides the cutter blade so that it does not reach the back side of the tubular film by touching the film surface. Along with the mounting of the Dorora, on the back side of the cutter block is always the moth in response to the resilient force of the spring
A cutter device for a tubular film, wherein a rolling roller capable of pressing a surface of an id rod and pushing a cutter block toward the film rod while rolling in an axial direction is mounted.