JPH02166031A - Cutting equipment for packaging machines - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION (a) Industrial Application Field The present invention relates to a punching device for a packaging machine, and more particularly, to a punching device used for, for example, high-mix, low-volume production using a form-fill packaging machine. This invention relates to an inexpensive punching device suitable for cutting.

(b) Prior art A so-called form-fill packaging machine, which forms a container into a strip-shaped container film, fills the container with goods, and seals it, has traditionally been used to produce large quantities of the same type of packaging. There is. The punching device for such a forming, filling and packaging machine is a die set system consisting of a female mold having a hole that matches the contour of the package to be punched and a male mold that inserts the female into the hole, and has a long life. Once set, it is designed to be used as is until the end of its life.

However, this Guiset type punching device has 1.
They are expensive and take time to replace. For this reason, this conventional punching device is not suitable for use when producing a wide variety of packages in small quantities using a form-fill-packing machine to produce various packages having different punching shapes, that is, contours.

(c) Problems to be Solved by the Invention Problem g to be solved by the present invention is to provide a punching device for a packaging machine that is suitable for high-mix, low-volume production, has low manufacturing costs, and is easy to adjust during set-up. The purpose is to allow easy replacement.

(d) Means for Solving the Problems The present invention provides a punching device for a packaging machine that punches a package having a desired contour shape from a strip-shaped film.
A cutting device having a cutting blade support portion and a blade receiving portion for receiving the cutting blade, and a separating device for separating the package from the film along the cut formed by the cutting device, the cutting device supporting the cutting blade. The cutting blade, which has a notch in the cutting edge having a shape that matches the contour shape of the cut to be formed, is mounted on a stand, and the cutting blade is fixed so as to protrude from the surface of the stand. An elastic member is bonded to the surface of the base, and the blade receiving portion is configured by bonding a soft blade receiving member that receives the cutting blade to a holder that receives the film from one side, The separation device includes a pair of upper and lower clamp tables that press the film around a notch formed in the film, and a pressing member that presses the film inside the notch.

(E) Function In the above invention, when the package formed on the film arrives between the cutting blade support part and the blade receiving part of the cutting device, the cutting blade support part and the blade receiving part are moved toward the film side. Then, the cutting edge portion of the cutting blade penetrates the film and cuts into the blade receiving member of the blade receiving portion, forming a discontinuous cut in the film. When the film with the notches formed in this way is sent to the upper and lower clamp tables of the separation device, the clamp tables hold the film around the notches, and then the pressing member pushes the film inside the notches. Pressing is applied to break the discontinuity and separate the package from the film.

(F) Embodiments Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In FIGS. 1 to 4, a punching device 1 of this embodiment is shown.
It is shown. In the figure, a punching device 1 includes a cutting device 2 and a separating device 4, which are provided at a predetermined interval along the transport direction of the film f.

The cutting device 2 includes a cutting blade support section 20 disposed above the transfer path of the film f, and a blade receiving section 30 disposed below the transfer path.

In this embodiment, the cutting blade support part 20 is attached to an inner mounting base 21 made of wood or synthetic resin having a shape matching the contour of the package to be punched, and a cutting edge part 2 on the outer periphery of the base.
4 is fixed on the inside so as to protrude from the surface 22 of the base 21, and has a cutting blade 23. As shown in FIG. 2, the cutting blade 23 is made of a thin band-shaped cutter steel material, and as shown in FIG. Fixed by means. Cutouts 25 are formed at desired intervals in the cutting edge portion 24 of the cutting blade 23 to make the cuts discontinuous. On the outer periphery of the cutting blade 23, an outer mounting base 26 is disposed in contact with the cutting blade, and has the same thickness as the inner mounting base 21 and is preferably made of the same material. In order to form the bases 21 and 26 for mounting on the inside and outside, it is sufficient to cut two plates using a jig saw or the like according to the outline of the package to be punched out, and the cutting blade 23 may be placed between them.

The support base 27 is removably fixed to a frame (not shown) of the cutting device or the like by a known method.

For inside and outside mounting, the stands 21 and 26 are attached to a support stand 27 made of wood or synthetic resin using known means such as adhesive or set screws.
is integrally fixed to. For inside and outside installation, use stand 21
An elastic member 28, such as a sponge or soft rubber, which is easily dented by compression is bonded to the surfaces 26 and 26. The thickness of the elastic member 28 is determined so that the cutting edge 24 of the cutting blade 23 is flush with the surface of the elastic member or slightly protrudes from the surface of the elastic member.

In addition, when making holes for 7 holes in the package, use the second hole.
As shown in the figure, a discontinuous circular blade 29 may be embedded in the same manner as described above.

Furthermore, if the blades 29 are continuous, it is also possible to punch out as is. The method for attaching the cutting blade to the stand is not limited to the method described above, but it is also possible to attach the cutting blade to the table by forming a narrow groove in the contour shape of the package to be punched in a sheet of plate. A band-shaped cutting blade may be pushed into the groove.

The blade receiver M2O includes a movable base 32 which is moved up and down by a drive device 131 such as a cylinder, and a movable base 32
It has a frame member 34 fixed to the top so as to define a hole 33 for receiving the container r of the package, and a blade receiving member 35 made of a synthetic resin material fixed to the upper surface of the frame member 34. . Frame material 3
4 is made of wood or synthetic resin and is fixed to the movable base 32 with adhesive or set screws. The blade receiving member 35 is configured to receive the cutting edge portion 24 of the cutting blade 23,
It is fixed to the frame member 34 with adhesive. The movable base 32 is integrated with the frame material and the blade receiving member to drive the drive device l.
! It is removably fixed to 31.

Note that the movable base 32 may be formed integrally with the frame member 34.

The separation device 4 includes an upper clamp table 41 fixed to a frame (not shown) of the separation device, and a lower clamp table 46 that is moved up and down by a drive device 47 such as a cylinder. The upper clamp table 41 has a box shape with an open bottom, and a pressing member 42 for pressing a package having a notch from above is movably disposed therein. This pressing member 42 is moved up and down by a cylinder 43 fixed to the upper clamp base 41. Lower clamp stand 46
is box-shaped with an open top and side (right side in FIG. 4), and a chute 49 extending outward through a side opening 48 is disposed within the box. This chute 49 is adapted to guide the package separated from the film f by the separating device to the outside of the lower clamp table 46.

Note that the shapes of the openings on the lower surface of the upper clamp table 41 and the upper surface of the lower clamp table 46 only need to be able to hold the film f at the periphery of the cut by both clamp tables, and do not necessarily always match the contour shape of the package, that is, the shape of the cut. There's no need.

Next, the operation of the punching device will be explained.

The movable base 32 of the blade receiving part 30 of the cutting device 2 is connected to the drive device 3.
1, it is waiting in the lower position. When the package formed on the film f is sent directly below the cutting blade support section 20 in this state, the drive device 31 is operated to raise the movable base 32. Then, the movable table 32
The frame member 34 and the blade receiving member 35 attached to the container r also rise, and the blade receiving member 35 presses the film r toward the cutting blade support 20 at the periphery of the container r. Then film f is the fifth
As shown in the figure, the elastic member 28 is crushed and pressed toward the cutting blade 23 side, that is, upwardly, and the cutting edge portion 24 of the cutting blade 23 bites into and penetrates the film f, forming a notch, that is, a cut n. At this time, the notch 2 on the cutting edge
5, the notch n becomes discontinuous at the notch as shown in FIG. Therefore, the inner part of the cut in the film, that is, the part of the package, and the outer part are slightly connected at this discontinuous part C, and the film! By moving the package, the package can be moved at the same time.

After the cut is formed, the movable table 32 is lowered.

Next, when the film f is moved and the part where the cut n is formed is sent above the separating device 4 and between the lower clamp tables 41 and 46 (at this time, the lower clamp table 26 is moved to the driving device 4).
7), the lower clamp stand 4
6 is raised by the drive device 47, and both the upper and lower clamp tables 4
1 and 46 hold the film f at the periphery of the cut. Thereafter, the pressing member 42 is lowered by the cylinder 43, and the film f (L, therefore the package b
) downward. Therefore, the portion C that was slightly connected to the surrounding film is cut, the package is separated from the film, and is dropped onto the chute 49. The package that has fallen onto the chute 49 is guided by the chute and exits the lower clamp table 46. When separation of the packages is completed, the pressing member 42 is raised and the lower clamp table 46 is lowered.

The outline shape of the package to be punched is not limited to the rectangular shape as in the above embodiment, but can be any desired shape as shown in FIG. Moreover, since the thin band-shaped cutting blade can be attached by wrapping it around the stand or by fixing it by other simple methods, various contour shapes can be easily created.

(g) Effects According to the present invention, the cutting device has a simple structure in which the belt-shaped cutting blade is simply attached to the stand, so it can be made with various contour shapes at low cost, and it is possible to use a soft blade holder. The cutting edge of the cutting blade is received by the member; unlike conventional die-set type bamboo cutting equipment, it does not take much time to replace the bamboo cutting equipment, and the equipment can be easily replaced as the punching shape changes. is cheap.

[Brief explanation of the drawing]

Fig. 1 is a schematic sectional view of the punching device of the present invention, Fig. 2 is a cross-sectional view of a part of the cutting blade support part after being reversed, Fig. 3 is a perspective view of the cutting blade, and Fig. 4 is a cross-sectional view of the cutting blade support part. Figure 5 is an enlarged sectional view showing the state of the cutting blade at the time of cutting, Figure 6 is a diagram showing the notch formed in the film, and Figure 7 is the notch. It is a figure which shows the example of another outline shape. 2. Punching device 2: Cutting device 20: Cutting blade support 23: Cutting blade 28 2. Elastic member 32: Movable base 4: Separation device 41. 46: Clamping base 42: Pressing member: Mounting base: Notch: Blade receiver Part: Blade receiving member

Claims (1)

[Scope of Claims] A punching device for a packaging machine that punches a package having a desired contour shape from a strip-shaped film, comprising a cutting device having a cutting blade support portion and a blade receiving portion for receiving the cutting blade, and the cutting device. and a separating device for separating the package from the film along the notch formed by the cutting device, and the cutting blade support portion of the cutting device has a notch in the cutting edge portion having a shape matching the contour shape of the notch to be formed. A cutting blade provided with the film is fixed to a mounting base with the cutting edge portion protruding from the surface of the mounting base, and an elastic member is bonded to the surface of the mounting base, and the blade receiving portion holds the film on one side. The separating device is constructed by joining a soft blade receiving member that receives the cutting blade to a receiving table that receives the cutting blade from the surface, and the separating device includes a pair of upper and lower clamping tables that hold the film around the notch formed in the film; A punching device for a packaging machine, comprising a pressing member that presses the film inside the notch.