JPS5820788B2 - Bag manufacturing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a bag manufacturing apparatus, more specifically, a bag for hanging and displaying products, and which has a function of allowing the products inside the packaging body to be hung without falling off. Regarding manufacturing equipment.

A conventional bag for hanging and displaying products that has the function of suspending the product stored in the bag body, such as socks, without falling off the bottom of the bag body, is disclosed in Japanese Utility Model Publication No. 48-26257. The ideas listed and the practical developments in 1977-
There is a device, such as the one disclosed in Publication No. 86797, in which a string material or a product hanger is installed, which is different from the material of the main body.

However, installing string materials and product hangers in this way is extremely difficult in the manufacturing of bags, making it unsuitable for mass production, resulting in very poor manufacturing efficiency, and the unit cost of each bag being high. Seed bags were not commercially available.

Focusing on these points, the present invention provides a bag that eliminates all of the above-mentioned drawbacks, is suitable for mass production, can be provided at low cost, and has extremely good workability, while having a function that allows products to be hung. to provide manufacturing equipment.

In other words, the feature is that in a bag manufacturing apparatus in which a strip of plastic film is bent at one end with a triangular plate to form the bottom and then transferred in a predetermined direction, the plastic film is placed on the front side of the heat seal after the film is transferred. A feeder that feeds belt-shaped strips made of plastic film thicker than the film in the direction of film transport, a punching machine that punches boots at a predetermined pitch into the strip-shaped strips supplied from the feeder, and a punch after punching. a rotatable former for inserting the lower end of the piece directly under the elongated hole into the folded portion of the transferred film; a crease line forming machine for forming a crease line in the center of the piece in front of the former; It consists of a horizontal sealer that thermally welds the upper end of the band-shaped abutment placed above the film to the film, and a vertical sealer that heat-seals both side edges of the film at the same time as the band-shaped abutment.

The specific configuration thereof will be explained below according to an embodiment shown in the drawings.

1 is a feeder 3 for a strip-shaped film 2 wound into a roll; a triangular plate for folding one end of the film 2 fed from the feeder 1 through a guide roller 4 to form the bottom of the bag; 5; Reference numeral 5' denotes two feed rollers installed at the tip of the triangular plate 3, and 6... refers to the belt-shaped film 2 that is once retracted by the feed rollers 5, 5' and then guided from above to the next process. A guide roller for feeding; 7 is a dancer roller that controls the feeding speed of the film 2 to prevent the film 2 from doubling; the above configuration shows the first half of the feeding process of the strip-shaped film 2;

Reference numeral 8 denotes a strip-shaped contact piece 9 made of a plastic film thicker than the film 2, such as synthetic paper, from a direction perpendicular to the transport path of the film 2 provided on the front side of the heat sealing process in the latter half of the film transport process. A feeder 10 is a dancer roller provided in front of the feeder 8, and 11 is a long hole 12 just below the center of the piece 9 that is fed from the dancer roller 10 via a guide roller 29. This is a punching machine for punching and punching, and a movable part 15 having a male die 14 corresponding to the elongated hole 12 is installed on a machine base 13, and the movable part 15 is moved up and down by interlocking with a drive part (not shown). It can be configured freely.

16... is a guide roller of the piece 9 having a long hole 12 punched by the punching machine 11, and 17 is the intersection of the transport path of the band-shaped film 2 and the transport path of the band-like piece 9. The former has a substantially right-angled triangular shape when viewed from above, and upper and lower plates 18 and 19 allow the band-shaped abutment piece 9 to pass therebetween, and are configured to be rotatable about point D as a fulcrum.

Reference numeral 20 denotes a crease line forming machine that forms a crease line 21 in the center of the strip-like piece 9 provided in front of the former 17, and includes a rotating plate 22, a heat line 23 that heats the rotating plate 22, and It is constituted by a dynamically adjustable bundle 24.

Reference numeral 25 denotes a horizontal sealer 2 for simultaneously heat-welding the upper edge of the strip-shaped film 2 and the strip-shaped abutment piece 9 placed on the film 2;
6 is a punching machine for punching holes 27 for hanging the bag; 28 is a vertical sealer that simultaneously heat-seals both edges a and b of the strip film 2 and strip piece 9 with a cutting blade (not shown); have

Since the present invention has the above configuration, the strip film feeder 1
Film 2 supplied from Kiteroller 4...
It is sent onto the triangular plate 3 via .

At this time, the center of the film 2 is shifted from the center of the triangular plate 3 and guided, so when passing the apex of the triangular plate 3, one end of the film 2 is held between the feed rollers 5 and 51 and bent to form a bottom portion C. At the same time, one piece d is bent longer than the other piece e due to the positional shift, and the film 2 is once retreated and sent upward by the guide rollers 6 .

When it passes above, it is reversed, that is, the long piece d is located under the short other piece e, and the next id roller 6', river...
It passes through the dancer roller 7 and is guided to the next process and transported to the position of the foam 17.

On the other hand, the belt-shaped contact piece 9 fed from the contact piece supplying machine 8 that has wound the belt-like contact piece 9 passes through the dancer roller 10 and then is transferred onto the machine stand 13 of the punching machine 11 via the guide roller 29. When the movable part 15 reaches the top of the machine base 13, the movable part 15 is lowered and a long hole 12 as shown in FIG.

Moreover, at this time, the timing of punching is adjusted by the dancer roller 10, and the feeding speed of the band-shaped contact piece 9 is controlled so that the long hole 12 can be punched out at a fixed position.

The strip-shaped abutment piece 9 in which the elongated hole 12 is punched out in this way
are the upper and lower plates 18 of the former 17 via the guide roller 16.
．． It enters into the space formed between 19, is bent at its leading edge into an L shape as shown in FIG. 1, passes through the back surface of lower plate 19, and is transferred to the next process.

At this time, the tip 17' of the former 17 enters between the lower piece d of the film 2 and the other upper piece 6, leaving that part open, so that the area directly below the elongated hole 12 of the strip-shaped contact piece 9 is opened. The lower end 9' is inserted and advanced into the opening.

Next, a band-shaped contact piece 9 is placed directly under the rotary plate 22 of the crease line forming machine 20.
When this reaches the center of the band-like abutment piece 9, a fold line 21 is formed extremely smoothly by heating and pressing by the rotary plate 22, and immediately after that, the upper end of the band-like abutment piece 9 is placed on the side d of the film 2 by the horizontal sealer 25. At the same time, the heat seal portion 30 is formed by heat welding.

Thereafter, a hole 27 is punched through the contact piece 9 and the film 2 at the center of the upper part of the elongated hole 12 using the next punching machine 26.

Next, the film 2 and the strip-shaped contact piece 9 are continuously transferred.
Then, with the vertical sealer 28, both edges a and b are thermally sealed and simultaneously thermally welded to produce a bag body 31 as shown in FIG. 6.

The bag 31 manufactured in this way is manufactured by hanging the product through the long hole 12 of the piece 9a and attaching the bag 31 to the hanging rod 32 as shown in FIG.
1 is inserted through the hole 27 formed in the hole 27 and hung for display.

Therefore, there is no risk that the product suspended in this way will slip down to the bottom C of the bag body 31.

Furthermore, since the photo-717 is rotatable with respect to the transport path of the film 2 with point D as a fulcrum, the insertion width and angle of the lower end of the band-shaped abutment piece can be freely adjusted.

Furthermore, the design of each member shown in this embodiment can be changed within the intended scope of the present invention.

As described above, the present invention relates to a manufacturing apparatus for a bag that can display products by hanging them inside the packaging body. The formation can be carried out simultaneously with the formation of the bag body, making it possible to perform a series of continuous operations, which is suitable for mass production, has very good work efficiency, and has the great advantage of being able to significantly reduce the cost of the bag. There is.

Moreover, the film and the band-shaped contact piece are assembled in the latter half after the film is transferred, and the band-shaped contact piece is inserted into the transfer path separately from the film transport path before the heat sealing, and the band-shaped contact piece can be freely rotated within the film. Because it is assembled into the film using a former, the lower end of the strip can be inserted into the opening of the film very reliably, and at the same time, the conveyance distance of the strip strip is shortened, which prevents the strip from shifting due to meandering, allowing the film to be placed in the correct position. It has the advantage of being able to guide the delivery.

Incidentally, since the former is rotatable with respect to the film transport direction, there is a practical advantage that the strip-shaped abutment piece can be incorporated into the film from a desired position.

Furthermore, since the crease line forming machine forms the crease lines on the band-shaped contact piece by heating and pressing, the crease lines can be formed extremely smoothly and with high precision.

In addition, the device as a whole has an extremely compact and simple structure, and other practical effects are outstanding.

[Brief explanation of drawings]

Fig. 1 is a schematic plan view of the bag manufacturing device according to the present invention, Fig. 2 is a schematic side view of the same device as seen from direction C in Fig. 1, and Fig. 3 is a schematic side view of the same device as seen from direction C in Fig. 1. 4 is a schematic side view of the device from direction C in FIG. 1, FIG. is a front view, and the mouth is a longitudinal sectional view. 2...-Plastic film, 8... Feeding machine, 9... Band-shaped piece, 11... Punching machine, 12... Long hole, 17 ...Forma, 20.・・・−Fold line forming machine, 25・・・・・・
Horizontal sea person 28... Vertical sea person.

Claims (1)

[Claims] 1 In a bag manufacturing apparatus in which a belt-shaped plastic film 2 is bent at one end by a triangular plate 3 to form a bottom and transported in a predetermined direction, the direction of transport of the plastic film 2 is adjusted on the heat-sealed front side after the film is transported. a feeder 8 that supplies a band-shaped contact piece 9 made of a plastic film thicker than the film 2; and a punching machine 11 that punches long holes 12 at a predetermined pitch into the band-like contact piece 9 supplied from the feeder 8. And, the lower end of the punched piece 9 directly below the elongated hole 12 can be inserted into the folded part of the film 2 being transferred, and it is made up of upper and lower plates that are configured to be freely rotatable with respect to the transfer path of the film. A former 17, a crease line forming machine 20 which forms a crease line in the center of the strip 9 by heating and suppressing it in front of the former 17; A bag manufacturing apparatus characterized by comprising a horizontal sealer 25 for thermally welding the upper end to the film, and a vertical sealer 28 for thermally sealing both side edges of the film together with the band-shaped abutment piece 9.