JPH06171623A - Cutting device for filling-packaging machine - Google Patents

Abstract

PURPOSE:To cope with a high speed switching motion by making the switching motion of a cutter simpler and simplify the mechanism. CONSTITUTION:A cutting body 17 is constituted of a blade body 14 for all cuttings and a blade body 11 to form a perforation, which are combined with each other, and the blade body 11 to form a performation is fixed on a main body 13, and at the same time, the blade body 14 for all cuttings is movably provided. Also, the leading end of the blade body 14 for all cuttings is displaceably provided in the tangential direction with the rotation circle of the blade tip of a rotary blade body 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutter device in a filling and packaging machine in which a connecting seal portion of a plurality of hermetically sealed bags, which are continuously formed of strip-shaped packaging material, can be cut by a cutter.

[0002]

2. Description of the Related Art Heretofore, various cutter devices in a filling and packaging machine have been proposed in which a connecting seal portion of a plurality of hermetically sealed bags continuously formed by a band-shaped packaging material can be cut by a cutter.

Among them, as a cutter device for selectively cutting and forming perforations by a single cutter device, as disclosed in Japanese Utility Model Laid-Open No. 3-45809, a cutting blade and perforations are formed. A cutter body is formed by combining the blade body with a cutter body so as to be able to move forward and backward relatively, and these cutters are selectively moved forward and backward by a cam member, and either one of the cutting blade body and the perforation forming blade body is formed. Two blades,
On the other hand, there is one in which a perforation is formed or cut by a rotary blade that is rotated from the other.

[0004]

However, the above-mentioned conventional cutter device has a complicated structure because each blade is driven by the cam member, and the inertial weight due to the reciprocating motion of each blade is reduced. Since the stroke of the cylinder, which is the driving means, is large, high-speed driving is impossible. Since each blade is slid back and forth, precision is required for processing the sliding surface, and there is a risk of wear. Further, since each blade operates together, the load of driving power is large, and there is a drawback that the adjustment work for finely adjusting the contact condition of the blade requires time and effort.

[0005]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and a connecting seal portion of a continuously formed sealing bag has a rotary blade body and a cutter facing the rotary blade body. In a cutter device in a filling and packaging machine configured to cut with a body, the cutter body is configured by tying the whole cutting blade body and a perforation forming blade body, and the perforation forming blade body is a cutter body. The blade is fixed to the main body and the tip of all cutting blades is movably provided. Further, the blade body for all cutting is provided so as to be displaceable in a tangential direction with respect to the rotation circle of the rotary blade body.

[0006]

[Function] It is possible to switch between cutting and perforation formation by merely displacing all the cutting blades.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows an embodiment of the present invention, in which a film material, for example, a laminated plastic film 2 delivered from a take-up roll 1 passes through guide rolls 3 and 4 and then a widthwise direction by a film folding metal fitting 5. Then, the laminated plastic film 2 is sealed in the longitudinal direction by the vertical sealing roll 6 and then the packaging material such as liquid or powder is supplied from the nozzle 7 in a predetermined amount, and then the horizontal sealing roll 8 is supplied. The horizontal sealing is performed to form the connection seal portion 9, and the sealed bag P is continuously formed.

The connecting seal portion 9 is selectively cut and perforated by the cutter device 10 of the present invention.

FIG. 2 is a sectional view showing the main part of the cutter device of the present invention. A known perforation forming blade body 11 having a concave and convex shape is fixed to the main body 13 so that the blade edge is in contact with the rotation circle of the blade edge of the rotary blade body 12. On the other hand, all cutting blades
14 is movably fixed so as to elastically contact the perforation forming blade 11 with a bolt 16 via an elastic member 15 such as a leaf spring, and to come into contact with the rotating circle of the blade edge of the rotary blade 12, and a cutter. Form the body 17.

That is, in this setting, it is set so that the tip of the perforation forming blade 11 and the tip of all cutting blades 14 simultaneously come into contact with the rotation circle of the rotary blade 12 rotating about the rotary shaft 18. Yes, cut in this state (all cuts)
Is done.

On the other hand, when forming perforations, as shown in FIG. 3, the air cylinder 19 installed inside the main body 13 is operated, and the plunger 20 of the air cylinder 19 pushes up the all-cutting blade body 14. By this, the blade body for all cutting 14
Is elastically deformed by the elastic member 15 using the bolt 16 as a fulcrum to be displaced in the tangential direction of the rotation circle of the blade edge of the rotary blade 12, and the tip of all cutting blades 14 from the rotary circle of the blade edge of the rotary blade 12. A perforation is formed when only the perforation forming blade 11 that is detached to the outside and fixed to the main body 13 contacts the rotating circle of the blade edge of the rotary blade 12.

Then, when cutting (all cutting) again,
By lowering the plunger 20 of the air cylinder 19 to elastically return the elastic member 15, the all-cutting blade body 14 makes elastic contact with the perforation forming blade body 11 and the rotary blade body 12
The blade edge is returned to a position in contact with the rotating circle and is cut (all cuts).

By moving the plunger 20 of the air cylinder 19 up and down in this manner, only the whole cutting blade 14 is slightly displaced in the tangential direction with respect to the rotation circle of the blade edge of the rotary blade 12 to perform cutting and sewing. It is possible to switch the eye formation.

By using this cutter device, for example, a sensor for measuring the number of hermetically sealed bags is used, and when a predetermined number of perforation portions P ₁ are formed in the connecting seal portion 9, the perforation forming blade body is formed. By switching between 11 and all the cutting blades 14 and cutting (P ₂ portion), a package in which a predetermined number of sealed bags P are connected can be obtained.

Incidentally, in this embodiment, the all-cutting blade body 14 is displaced in the tangential direction with respect to the rotary circle of the blade edge of the rotary blade body 12 and released from the rotary blade body 12 to form the perforation forming blade body 11. I was switching, but if I let the tip of all cutting blades 14 escape from the rotation circle of the blade tip of the rotary blade 12 to the outside,
Since it is possible to switch to the perforation cutting blade 11, the direction of displacement is not particularly limited.

[0016]

According to the present invention, the cutter body is constructed by tying the all-cutting blade body and the perforation forming blade body together, and the perforation forming blade body is fixed to the cutter body without moving. On the other hand, since only the blades for all cutting are provided so as to be movable, the switching operation of the cutter is simplified and the mechanism is simplified. In addition, since the cutting blades can be switched by only slightly displacing all the cutting blades in the tangential direction to the rotary circle of the blade edge of the rotary blade, the drive power for switching can be significantly reduced and high speed operation can be achieved. This has the effect of being able to handle the switching operation.

[Brief description of drawings]

FIG. 1 is a schematic view of a filling and packaging machine to which the present invention is applied.

FIG. 2 is a sectional view of an essential part showing an embodiment of the present invention.

FIG. 3 is a sectional view of an essential part showing the operation of the embodiment of the present invention.

FIG. 4 is a plan view showing an embodiment of the present invention.

[Explanation of symbols]

1 Take-up roll 2 Laminated plastic film 3, 4 Guide roll 5 Film folding metal fitting 6 Vertical seal roll 7 Nozzle 8 Horizontal seal roll 9 Connection seal part 10 Cutter device 11 Perforation forming blade 12 Rotating blade 13 Main body 14 Full cut Blade body 15 Elastic member 16 Bolt 17 Cutter body 18 Rotating shaft 19 Air cylinder 20 Plunger P Sealing bag P ₁ Perforation forming part P ₂ Cutting part

Claims (2)

[Claims] 1. A cutter device in a filling and packaging machine, wherein a connecting seal portion of a continuously formed hermetic bag is cut by a rotary blade body and a cutter body facing the rotary blade body. It is configured by tying together all cutting blades and perforation forming blades, fixing the perforation forming blades to the cutter body, and movably providing all cutting blades, Cutter device in filling and packaging machine. 2. The cutter device in a filling and packaging machine according to claim 1, wherein the tip of all cutting blades is provided so as to be displaceable in a tangential direction with respect to a rotation circle of a cutting edge of the rotary blade.