JPS6335482B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pack sealing machine that seals a so-called pack, which is an integrated lid and container for packaging eggs, meat, and other foods, after the contents have been stored.

For example, thin resin pack cases have traditionally been used for egg packs, and their mating edges have traditionally been closed using staples, heat treatment sealing, or the like. However, the conventional closed structure had the problem that it was troublesome to open the package, and even if the package could be opened, it was difficult to take out the contents due to the closed structure. I filed an application regarding the structure. The present invention was made as a result of a series of such developments and researches, and its purpose is to fold the lid of a pack whose lid is integrated with the container and close it with tape, and to also display the spawning date and other arbitrary information. To provide a pack sealing machine that can automatically perform a series of sealing operations using tape, such as attaching .

That is, the gist of the present invention is to provide a mechanism for linearly transporting a pack in which a container and a lid are integrated in an openable and closable manner over a certain distance, and a mechanism that contacts the lid of the pack on this moving mechanism, folds it onto the container, and closes the pack. It consists of a folding mechanism that maintains the condition, and a mechanism that feeds out the tape along the moving pack and adheres the tape to the closing edges of the lid and the container. A pack sealing machine characterized by having a tapered guide that guides the tape into a substantially horizontal V-shaped or U-shaped cross section, and a means for bonding the tape to the closing edge, and a bonded tape having this particular invention as a main part. This is a pack seal machine that has a printing mechanism added to display a predetermined mark on the paper.

The present invention will be explained in detail below. In the illustrated embodiment, 1 is a thin synthetic resin pack in which the container 1a and the lid 1b are integrally molded, 1c and 1d are the closing edges thereof, and 1e is the bend at the boundary between the container 1a and the lid 1b. 2 is a moving mechanism for moving the pack 1 on the machine base 10 in order to seal it with the closing edges 1c and d.It is composed of a pair of front and rear conveyors 11 and 12, and the former conveyor 11 is operated continuously, and the latter conveyor 12 is operated continuously.
performs intermittent operation. 13 is the front conveyor 11
The drive mechanism 14 is a drive mechanism for the conveyor 12 at the subsequent stage, and operates intermittently in conjunction with the operation of the printing mechanism 9 and the cutter 9a attached thereto, which will be described later.

3 is a folding mechanism that folds the lid 1b of the pack 1 onto the container 1a and keeps it closed until the sealing is completed;
The folding rod 3a is provided with a folding rod 3a for folding the half-open lid 1b, and a holding plate 3b for holding the lid 1b in the folded state after that. The first half has an inclined guide part 3c that guides the lid 1b in a direction to gradually close it, and the rear holding plate 3b is provided so as to overlap with the folding rod 3a at the end of the front conveyor 11, and the rear end is attached to the rear end of the rear conveyor 12. Reach the rear end. The height between the lower edge 3d of the holding plate 3b and the conveyor 11 is approximately equal to the height of the sealed pack 1,
Further, an oblique side 3e is provided on the lower surface of the pack transfer end with the front folding rod 3a.

4 closes adhesive tape 4a for sealing and edges 1
A tape reel 4b placed on the side of the front conveyor 11, a cylindrical feeding roll 5 placed at the tape feeding position, and a lid 1b.
and a tapered guide 7 which supplies the tape 4a along the closing edges 1c, 1d of the container 1a while bending it into a horizontal V-shape (or approximately horizontal U-shape), and is brought close to the closing edges 1c, 1d. It consists of means 8 for actually gluing the tape 4a to the closing edges 1c, 1d, and in the illustrated embodiment, the gluing means 8 is provided on the side of the intermittent conveyor 12 at the rear stage, and just before that, the adhesive tape 4a is connected from the front conveyor 11 to the rear conveyor 12. A tapered guide 7 is installed throughout. This guide 7 has a front end 7a
has a slightly curved shape in the bending direction, and the terminal end 7
b is deformed into a horizontal V-shape (or horizontal U-shape), and the degree of bending gradually changes in the middle (Figures 4 and 5). The adhesive means 8 has a pair of upper and lower roll-type brush-like members 8a, 8a, as illustrated in FIG. 4, and this member 8a is adapted to adapt to changes in seal height. The example shown in FIG. 5 is another example of the adhesive means 8, and is a pair of upper and lower flat brush-like members 8.
b, 8b. Although not shown, if the seal height actually changes, the height of the tapered guide 7 is also adjusted.

6 is a guide rod for preventing the pack 1 from slipping, which is provided along the conveyor moving direction on the opposite side of the adhesive mechanism 4;
6a is the stay, 6b is the stay 6a and the machine base 10
A buffer spring provided in between, and 8c is a brush-like member 8.
8a and 8a show the crimping rolls disposed downstream of a and 8a. Reference numeral 9 denotes the aforementioned printing mechanism, 9a a cutter disposed after the printing mechanism 9, 15 a drive mechanism for the printing mechanism 9, and 16 an interlocking cam mechanism that drives the cutter 9a at the same time as the printing mechanism 9. It has four cams 18, 19, 20 and 21 fixed to the shaft 17, each cam has a cam ring 18a, 19a, 20a and 21a.
engage with each other. 18b is a cam recess that engages with a cam ring 18a provided on the cutter lever 22 and moves the lever 22 up and down once with one rotation of the cam 18; 18c;
is the support shaft of the lever 22, 19d is a cam surface that moves the sliding lever 23 back and forth to the printing position once with one rotation of the cam 19, 19c is the support shaft of the lever 23, and 20b is an L-shaped lever with one rotation of the cam 20. 24 is pushed down twice, 20c is the support shaft of the lever 24, 20d is a pin connected to the elongated hole 23a of the sliding lever 23 at the vertical end of the lever 24, and 21b is a printing part having a horizontal T-shape. A cam convex portion 21c that pushes up the support lever 25 to the printing location once per cam rotation is the lever 25.
It is the pivot of Reference numeral 26 indicates a printing member suspended from the tip of the sliding lever 23 via a spring 27, 28 indicates an ink bottle provided at the retracted and lowered position of the member 26, and 29 indicates a stamp receiver provided at the tip of the support lever.

In the above configuration, when each part is in operation and the pack 1 stores the contents, the front conveyor 1
1, the half-open lid 1b is folded away from the folding rod 3a while being moved by the continuously operating front-stage conveyor 11.
First, the presser plate 3 is gradually bent in the closing direction by the inclined guide portion 3c and faces the end of the front stage conveyor 11.
By moving through the oblique side 3e of b, it is kept in a substantially completely closed state and is about to move to the subsequent conveyor 12. Pack 1 with lid 1b closed
When the pack 1 reaches the front end of the downstream conveyor 12, the sensing switch 12a detects the entry of the pack 1 and starts the downstream conveyor 12, which had been stopped until then, so the pack 1 starts moving again, and at the same time the pack 1 starts moving again. Either the tip is bitten by the pressure roll 8b only at first, or the closing edges 1c and 1d of the pack 1 are
When the tape 4a approaches the top and bottom of the closing edges 1c, 1d as the pack 1 moves, the tape 4a will close to the closing edges 1c, 1d while passing the brush-like member 8a. The adhesive tape 4a is bonded and further pressed by the pressure roll 8b to complete the sealing with the adhesive tape 4a, after which the downstream conveyor 12 is stopped. The tip reaches the printing mechanism 9 at the subsequent stage, and the printing mechanism 9 is started when the conveyor 12 stops, and when the drive mechanism 15 is activated, the four cams 18, 19, 20 are activated while the drive shaft 17 rotates once. and 21
and its engaging cam wheels 18a to 21a and each lever 2
2 to 25 operate in tandem, thereby marking the date and other markings on the tape surface, and then immediately cutting the tapes of the preceding pack and the following pack. At this time, the cutting position is set slightly forward of the front end of pack 1. By setting this, a tab 4c is formed that protrudes from the pack, which is convenient as a finger grip when peeling.

Note that the adhesive tape 4a is pulled out as the pack 1 moves and the sealing progresses, but the adhesive tape 4a is pulled out as the pack 1 moves and the sealing progresses.
Adhesion can be stably performed by maintaining a constant speed and a constant pulling force by applying appropriate resistance or the like. Furthermore, depending on the pack 1, even if the closing edges 1c and 1d are in a completely closed state, they may tend to separate due to deformation after molding. It is also possible to provide a member halfway to raise the closing edge 1c to facilitate sealing in line with the upper closing edge 1d.

Therefore, according to the present invention, while the lid of a pack whose lid is integrated with the container is folded in by the folding means and kept in a closed state, the tape is adhered to the closing edge of the lid and the container over substantially the entire length by the adhesive mechanism. Furthermore, the effect can be obtained that a series of operations of stamping the date and other indications on the tape and cutting it can be performed automatically. The present invention is easy and accurate to carry out because the pack is moved in a straight line, and the lid of the pack is closed by the folding mechanism while being conveyed along the direction of movement, and the tape is closed by the adhesive mechanism and fed out in the direction of movement. Since it is equipped with a tapered guide as an adhesive mechanism, it is possible to gradually guide and deform the flat long tape into a cross-sectional shape of a horizontal V-shape or a horizontal U-shape, and then adhere it to the closing edge of the pack.
Therefore, the tape can be guided to the closing edge and the adhesive work can be carried out smoothly while the pack is moved in a straight line.

[Brief explanation of the drawing]

The drawings show an embodiment of the pack sealing machine according to the present invention, in which Fig. 1 is a side view, Fig. 2 is a plan view, Fig. 3 is a perspective view of the folding mechanism, and Fig. 4 is a tapered guide and adhesive. 5 is a perspective view showing a modification of the same as above, FIG. 6 is a side view of the printing mechanism, and FIGS. 7, 8, and 9 are front views of each cam, and FIG. FIG. 10 is a perspective view of the pack after sealing and stamping. 1... Pack, 2... Moving mechanism, 3... Folding mechanism,
4... Adhesive mechanism, 7... Tapered guide, 8... Adhesive means, 9... Printing mechanism, 9a... Cutter.

Claims (1)

[Scope of Claims] 1. A mechanism for linearly transporting a pack in which a container and a lid are integrated in an openable and closable manner over a certain distance; It consists of a folding mechanism that maintains the closed state, and a mechanism that feeds out the tape along the moving pack and adheres the tape to the closing edge of the lid and container. A pack sealing machine comprising: a tapered guide for guiding the tape into a substantially horizontal V-shaped or U-shaped cross section; and means for adhering the tape to the closing edge. 2. The pack sealing machine according to claim 1, wherein the moving mechanism comprises a pair of front and rear conveyors. 3. The pack sealing machine according to claim 1, wherein the adhesive means of the tape adhesive mechanism includes a brush-like member that presses the adhesive area. 4. A mechanism for linearly transporting a pack in which a container and a lid are integrated so that they can be opened and closed over a certain distance, and a folding mechanism that contacts the lid of the pack on this moving mechanism and folds it onto the container and keeps it in the closed state. , a mechanism that feeds out the tape along the moving pack and adheres the tape to the closing edge of the lid and container, and a printing mechanism that applies a predetermined indication to the adhered tape. A pack sealing machine comprising: a tapered guide for guiding the tape into a substantially horizontal V-shaped or U-shaped cross section along the closing edge; and means for adhering the tape to the closing edge. 5. The pack sealing machine according to claim 4, wherein the printing mechanism has a cutter that cuts the tape in conjunction with the printing lever.