JPS6322308A - Packaging machine - Google Patents

Abstract

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

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a packaging machine, and more particularly, to a packaging machine, and more particularly to a packaging machine, in which a container is fed to a conveyor, and while the container is being conveyed by the conveyor, the contents of the container, such as a fluid food product, are stored in the container. After that, the top of the container is folded flat so that a pair of triangular ears protrude laterally, and the container is sealed.Then, both triangular ears are bent downward and fixed to the side of the container, and the final container is sealed. This invention relates to a machine for producing rectangular parallelepiped containers.

Conventional technology and its problems The above-mentioned conveyor (well, it is equipped with a container holder and conveys the container by holding the container. Among the various packaging operations, it is better to hold the container as deep as possible in the holder during the process up to the sealing mentioned above.
It is easy to work on containers. If this is done, the holder will get in the way of the subsequent process, especially the process of folding the triangular ears, and the process cannot be carried out as it is.

Conventionally, countermeasures have been taken, such as providing a relief for the 46 operating part in the container of the device that performs the bending work on the holder, but since there are a large number of holders, such countermeasures are required for each holder. It is troublesome to apply each.

An object of the present invention is to provide a packaging machine that can easily perform various packaging operations without taking the troublesome measures described above.

Means for Solving the Problems The packaging machine according to the present invention includes a filling device that sequentially fills cylindrical containers with contents from the rear to the front on the conveyance path of a container conveyor, and a cylinder filled with the contents. A top sealing device that folds the top part of a shaped container flat so that a pair of triangular ears protrude to the left and right sides and seals it, and a triangular shape that fixes to both left and right sides of the container by bending both square corners downward. The container transport conveyor is equipped with a container holder that restricts the horizontal movement of the containers but allows the containers to move freely in the vertical direction. In a packaging machine in which a rail is arranged to receive and guide the bottom of a container held in a container holder, a front upward slope is provided between the top sealing device of the rail and the triangular ear forming device. ), the part of the rail tangential to the slope is a low-level rail that connects to the bottom end of the slope, and the part in front of it is a high-level rail that connects to the top of the slope. be.

Example Embodiments of the invention will be described below with reference to the drawings.

First, before explaining the packaging machine, the containers supplied to the packaging machine will be explained.
As shown in the figure, the container (11) is a rectangular cylinder with a square cross section.
The part that becomes the body part (12) (hereinafter referred to as the body part)
and a portion (15) that becomes the top of the container (11) that connects to the upper end of the body component (12) via the upper fold line (13).
(hereinafter referred to as the top component) and the container (11) connected to the lower end of the body component (12) via the lower fold line (14).
) (hereinafter referred to as the bottom component). Although it will not be explained in detail since it is not directly related to this invention, the entire container (11) is made of a single sheet of paper-based laminated material, and thermoplastic synthetic resin layers are formed on both the inside and outside surfaces of the container (11). ing. Furthermore, crease lines (17) and (18) are provided in a predetermined pattern on the top and bottom components (15) and (16) to facilitate folding, respectively.

The top component (15) consists of four side walls (19) to (22), one of which, on the side 11 (19), is provided with an oblong drinking spout (23).

The packaging machine is equipped with a container conveyor (31), as shown schematically in FIG. 1.

In this specification, "front and back" refers to the direction in which the container (11) is transported by the conveyor (31) (to the left in FIG. 1), with the conveyance direction of the conveyor (31) as a reference. The opposite direction is called rear, and left and right is called forward.

Above the starting end of the conveyance path, that is, the rear end of the container conveyor (31), there is a rotating body (47) having a radial mandrel and a group of devices for folding and closing the bottom component (16) flatly in cooperation with the rotary body (47). However, the explanation of these will be omitted.

Along the transport route of the conveyor (31), from the back to the front, the mouth sealing device (32) and the filling device 1t (33
), a top sealing device (48), a branding device (37) and a top triangular ear forming device (49) are arranged. As shown in Fig. 10, the spout sealing device (32) is made by cutting off the tip of the sealing tape (24) to form a seal piece (25), which is attached to the periphery of the spout (23). mouth(
23). The filling device (33) and the branding device (37) are both well known, and their explanation will be omitted. The II″j section sealing device (48) is composed of three units: a top folding device (34), a top heater (35), and a top sealing device (36),
As shown in Figure 11, a cylindrical container (
11) with a pair of triangular ears (26) protruding laterally to the left and right, and a sealing frame (27) extending upward so that both ends reach one mouth point of the triangular ears (26). By folding the sheet so that it protrudes and overlapping the inner surfaces of the sealing frame (27) to form a sheet seal,
It seals the top component (15). The top triangular ear forming device N (49) includes a top triangular ear pre-folding device (38), a mouth triangular ear heater (39), a nuchal triangle bending device (40), and a top triangular ear forming device (50).
As shown in Fig. 12, both triangular ears (26) are folded downward together with the sealing frame (27) to overlap and heat-seal the left and right sides of the container (11). By doing so, the triangular ears (26) are fixed.

It should be noted that each of the above-mentioned apparatuses is configured to simultaneously perform required packaging operations on two containers conveyed on a conveyor.

As shown in FIGS. 4 to 6, the container conveyor (31) includes a pair of parallel horizontal endless chains (41) and a pair of horizontal endless chains (41) arranged at regular intervals in the length direction of the chains (41). It is equipped with horizontal cross-sectional holders (42) that are attached outward, and when the holders (42) point toward the feed side movement path, two of them are attached to each of both chains (41). Four holders (42) are adapted to hold the containers (11) in the respective colors of the container body component (12). The container (1) is placed in the holder (42).
1), the drinking spout (23) faces forward. A rail (43) that receives and guides the bottom of the container (11) is arranged below the feeding side moving path of the container holder (42).

The rail (43), as shown in its entirety in FIGS. 2 and 3, is arranged above the bed (51) and extends in the front-rear direction via the arrangement positions of each of the above-mentioned devices. In FIG. 2, the arrangement position of each device is indicated by the reference numeral of each device. The rail (43) has two horizontal bar-shaped main rail members (52) that extend parallel to each other at intervals from the rear end to near the front end and have a vertically elongated rectangular cross section, and a main rail member that (52) and one horizontal bar-shaped auxiliary rail member (53) which is sandwiched between the front part of the main rail member (52) in a state of protruding forward and has a substantially square cross section.

The main rail member (52) is connected to the upper ends of vertical rods (54) extending from below at three positions in the length direction by pins (55).

The vertical rod (54) is fitted in a sliding guide tube (57) provided on the bed top wall (56) in the middle of its length, as shown in FIG. Vertical rod (54)
The lower end passes through the bed bottom wall (58) and projects downward, and a male screw (59) is provided on the outer surface of the projecting end, and a screw hole (60) is provided at the center of the shaft. . There are two stopper nuts (
61) is fitted.

A fluid pressure cylinder (63) is attached to the lower surface of the bed bottom wall (58) via a bracket (62) so as to be located directly below the vertical rod (54). The piston rod (64) is provided with a male thread (65), which is screwed into the threaded hole (60), and a tightening nut (66) is fitted into the male thread (65) to tighten the vertical rod (54).
The vertical rod (54) and the piston rod (64) are connected by tightening. 2
By adjusting the position of the two stopper nuts (61), the amount of protrusion of the piston rod (64) is adjusted, and by this adjustment, the height of the vertical rod (54) and the rail (
43) can be adjusted in height. This is to accommodate containers of different heights. Auxiliary rail member (5
3) A front sloped portion (67) is provided at the rear end. This inclined portion (67) is connected to the top sealing device (36).
and the branding device (37). Most of the top surface of the sloped part (67) protrudes upward from the top surface of the main rail member (52), and the rear part of the sloped part (67) of the main rail member (52) is the sloped part (67).
3) A low level rail (68) is connected to the lower end, and a portion of the auxiliary rail member (53) in front of the slope (67) is a high level rail (69) connected to the upper end of the slope (67). There is.

Next, the low level rail (68) and the high level rail (6
9) Containers (
The packaging work for 11) will be briefly explained.

Figure 7 shows the top folding device (34) and its surroundings.

The top folding device (34) is equipped with first and second folding members (71) and (72), and the first folding member (71) is composed of a pair of fixed clamping pieces (73) and (74). The fixed clamp pressure pieces (73) (74) are attached to the container conveyor (
31) are placed on both sides of the conveyance path, and both fixed clamp pressure pieces (7
3) (74) A gap is provided between each other in which the container (11) conveyed by the conveyor (31) enters, and the top surfaces of the fixed clamping pieces (73) and (74) are horizontal and the containers (
The height is the same as the boundary between the top component (15) and the chest component (12) of the second folding member (72).
) consists of a pair of movable clamping pieces (78) (79), and both movable clamping pieces (78) (79) are connected to both fixed clamping pieces (73) (7).
4) Both fixed clamp pressure pieces (73) (74)
) and both fixed clamp pressure pieces (73)
Elevating body (8o) so that it can approach and separate from (74)
The free ends of both movable clamping pressure pieces (78) and (79) are attached swingably by a pair of parallel horizontal shafts (81) and (82) extending in a direction perpendicular to the conveyance path. A gap is provided between them into which the sealing frame (21) can fit.

And in the vicinity of this device (34) the rail (43) is a low-level rail (68), on which the container (11) is received the whole of the top component (15) and the body component ( 12) A portion near the upper end protrudes above the container holder (42).

FIG. 8 shows the top triangular selvage folding device (40) and its surroundings.

The top triangular edge folding device M (40) is a lifting member (
91) and a container (1) which is provided in a hanging manner on the elevating member (91) and is conveyed between them by the same conveyor (31).
1) A pair of triangular EFs protruding laterally from the top of (20
) and a container top holding member (93) disposed between the triangular selvage bending members (92) and both triangular selvage bending members (92), in which a gap is provided corresponding to the distance that separates the bases of the triangular selvage members (92) from each other. , a vertical rod (94) that is provided upright on the container top holding member (93) and whose upper end extends through the lifting section 1 (91) and projects upward therefrom; and an upwardly projecting end of the vertical rod (94). It consists of a stopper (95) fixed to the container, and a compression coil spring (96) interposed between the lifting member (91) and the container top holding member (93) and fitted to a vertical rod (94).

And in the vicinity of this device (40) the rail (43) is a high-level rail (69), on which the container (11) is received a top component (15) which is folded generally flat. The entire body component (12) and a portion near the upper end protrude above the container holder (42), but this amount of protrusion is limited by the amount that the container (11) is received by the low level rail (68). This is the sum of the height difference of the step (67) and the amount of protrusion when being pulled down, and this is larger than the amount of descent of the triangular lug bending member (92) shown by the chain line in the figure.

Effects of the Invention According to the present invention, since the height of the container is changed by the rail that receives and guides the bottom of the container, there is no need to take troublesome measures as in the conventional device mentioned at the beginning.
This can be easily done through various packaging operations.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show an embodiment of the present invention, and FIG. 1 is a side view, and FIG.
The figure is a plan view of the rail, Figure 3 is a side view of the same, and Figure 4 is a side view of the rail.
Fig. 5 is a side view showing an enlarged part of Fig. 3; Fig. 6 is a sectional view taken along the line Vl\■ in Fig. 5; Fig. 7. FIG. 8 is a front view of the top folding device and its surroundings, FIG. 8 is a front view of the triangular tab folding device and its surroundings, and FIGS. 9 to 12 are perspective views of the container sequentially showing the container forming process. (11)...Container, (15)...Top component, (2
6)...triangular ears, (31)...conveyor, (33)
...Filling device, (42)...Holder, (43)...
・Rail, (48)...Top sealing device, (49)...
・Triangular ear forming device, (67)...slanted part, (68)・
...Low level rail, (69)...High level rail. Patent applicant: Shikoku Kakoki Co., Ltd. Agent: Einosuke Kishimoto (4 others) hvrkjrs
S Prize Kaiyo 4 questions

Claims (1)

[Claims] A filling device (33) that sequentially fills the cylindrical container (11) with contents from the back to the front on the conveyance path of the container conveyor (31), and the cylindrical container (11) filled with the contents.
A top sealing device (48) that folds and seals the top part (15) flat so that a pair of triangular ears (26) protrude to the left and right sides, and a top sealing device (48) that folds and seals the top part (15) of the A triangular ear forming device (49) fixed to both left and right sides of the container (11) is disposed, and the container conveyor (31)
) is equipped with a container holder (42) that restricts the horizontal movement of the container (11) but allows it to move in the vertical direction. and the container (1) held in the container holder (42).
1) In a packaging machine in which a rail (43) for receiving and guiding the bottom of the rail (43) is arranged, a front upward slope is provided between the top sealing device (48) of the rail (43) and the triangular ear forming device (49). (67) is provided, and the inclined part (6
7) A low level rail (68) whose rear part is connected to the lower end of the inclined part (67), and a high level rail (69) whose front part is connected to the upper end of the inclined part (67).
A packaging machine characterized by: