JPH0656130A - Side-sealing apparatus for film - Google Patents

Abstract

PURPOSE:To make package appearance good to improve a product value and securely collect film ends preventing them from scattering by cutting unnecessary parts at both ends of a wrap film. CONSTITUTION:This is a film side-sealing apparatus comprising a vertical set of feed belts 45, 48a, 48b for carrying both ends of a wrap film 4 for covering a product 3 to be wrapped and a heat-sealing means 42 for continuously heat-sealing both ends. It also comprises a cutting means 41 for cutting outer parts from the sealed part at both ends of the film 4 and a dust collector 62 for collecting both ends cut by the cutting means 41.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a film side-sealing device for continuously heat-sealing both ends of an opening packaging film.

[0002]

2. Description of the Related Art Conventionally, as a device for heat-sealing both ends of a packaging film for covering an object to be packaged, a pair of upper and lower transfer belts for rotating both ends of the film transferred together with the object to be packaged. There is one that is sandwiched between and heat-sealed by heat-sealing means.

[0003]

However, in the above-mentioned conventional device, a film wider than necessary is used in order to secure a sealing margin at both ends of the film, and therefore, the film is wider than the both edges of the film. The present situation is that the inner ring is sealed more than necessary. For this reason, there are disadvantages that unnecessary portions at both ends remain on the film, the packaging appearance is deteriorated, and the commercial value is reduced.

The present invention has been made in view of the conventional problems as described above, and by cutting unnecessary portions at both ends of the packaging film, the packaging appearance can be improved and the commercial value can be improved. Moreover, it is an object of the present invention to provide a film side seal device that reliably collects cut film waste and does not scatter it.

[0005]

Means for Solving the Problems The technical means taken by the present invention to solve the above-mentioned problems are as follows: a pair of upper and lower feed belts for transferring both ends of a packaging film covering a packaged object, A side sealing device for a film, comprising: a heat sealing means for continuously heat sealing the both end portions; a cutting means for cutting an outer side of a sealing portion at both end portions of the film; and a cutting means cut by the cutting means. And a debris removing device for accumulating both ends.

Moreover, the debris removing device is composed of a dedusting chute located on the rear side of the cutting means and having an opening on the upper surface thereof, and a blower device for blowing air toward the opening from above. Is preferred.

[0007]

In the film side sealing device of the present invention, both end portions 4a of the packaging film 4 for covering the package 3 are covered.
When the upper and lower feed belts 45, 48a, 48b are sandwiched and the both ends 4a of the film 4 are transferred by the rotation thereof, the cutting means
41 continuously cuts unnecessary portions of both ends 4a. Since the unnecessary parts that have been cut are accumulated in the scrap removing device as scraps 4b, they are not scattered.

Both ends 4a are heat-sealed by the heat-sealing means 42. Therefore, the film 4 is sealed in a state where it is cut to a desired length in the width direction, no unnecessary portion remains at both ends 4a, and the appearance of the packaging form is improved.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. In FIG. 1, 1 is, for example, a transfer device for transferring a container 3 in which food as a packaged object is stored, and 5 is a container 3 transferred by the transfer device 1 covered with a heat-shrinkable film 4. A packing machine 7, 7a is a supply shooter for supplying chopsticks 9 in front of the container 3 to be transferred, and 8 is a shrink device.

As shown in FIG. 5A, the film 4 is wound in a roll shape so that the film 4 can be unrolled downward through a pair of drive roller 11, dancer roller 12 and brake roller 13 so that the film can be unrolled. 5 is attached. 15 is a vacuum body for adsorbing the lower end of the film 4,
It is provided on the mounting table 16 of the packaging machine 5 at a position lower than the container 3 transferred to the film 4 side by the transfer body 17.

Numeral 19 is a pressing roller for pressing the upper surface of the container 3 which is sucked by the vacuum body 15 and pressed into the film 4 in a tension state and transferred onto the conveyer roller 20, and 22 is the film 4 in which the rear portion of the container 3 is pressed. To cover the film 4
Is a stretch bar that can be moved up and down so as to pull it down to below the vacuum body 15, and 23 is a cutter that cuts the portion of the film 4 between the container 3 and the stretch bar 22.

As shown in FIG. 7, reference numeral 25 denotes a guide body which is provided on the mounting table 16 of the packaging machine 5 so as to be spaced apart from each other.
At the tip of each guide body 25, a pair of film air nozzles 26, which eject air toward the film 4, are attached. The air nozzles 26, 26 are provided with a transfer body 17.
Pushes the container 3 into the film 4 and the film 4
When covering the front and upper and lower surfaces of the film 4, both end portions 4a of the film 4 protruding in the width direction beyond the container 3 are not bent backward or wrinkled, so that both end portions of the film 4 in front of the film 4 are not bent.
Air is ejected to the inside of 4a, and the film air nozzles 26, 26 are controlled so that the strength and amount of the air are in an optimum state.

Reference numerals 28 and 28 denote a pair of chopstick air nozzles for ejecting air onto the chopsticks 9 from below so that the chopsticks 9 are erected so as to extend along the side surfaces of the container 3 and are provided at the front end of the mounting table 16. Each is provided. The chopsticks 9 are stored in the storage bag 9a, and are supplied in a state of being positioned on the rear side of the storage bag 9a so as to stand up easily as shown in FIG. 29 is the air nozzle for the film that detects the front end of the container 3
Sensors for operating the air nozzles 26, 26 and the chopstick air nozzles 28, 28, respectively, are attached to the rear of the film air nozzles 26, 26 of each guide body 25.

As shown in FIGS. 2 to 4, reference numeral 30 denotes a side seal device for sandwiching and heat-sealing both edge portions 4a of the film 4 covering the container 3 from above and below, and a transfer conveyor for transferring the container 3. It is provided on each side of 35. The side seal device 30 includes a support body 33 having a lower end portion slidably fitted on a lateral support shaft 32, and an elevating body 34 screwed into a rotatable screw portion 33a of the support body 33 and front and rear end portions. And a side seal portion 37 provided on each support plate 36. By rotating each screw part 33a via the handle 38, the side seal part
37 is adjustable up and down. Further, the support 33 can be brought into and out of contact with the chain mechanism 67 that is driven in conjunction with the packaging machine 5 via the sprocket 5a on the packaging machine 5 side, and the distance between both side seal portions 37 can be freely adjusted. .

As shown in FIG. 3, the side seal portion 37 includes a pair of upper and lower pulleys 39a, 39 from the upstream side in the transfer direction A of the container 3.
b, a perforation forming portion 40, a cutting means 41 for cutting both end edges of the film 4, and the pulleys 39a and 39b.
A pair of upper and lower drive pulleys 43a and 43b around which a belt (feed belt) 45 is wound, a pair of heater plates 46a and 46b, and heat seal means 42 for heat-sealing both end edges of the film 4; Of the pressure rollers 44a and 44b, and a pair of upper and lower pulleys 47a and 47b around which the feed belts 48a and 48b are wound between the pulleys 43a and 43b.

The perforation forming portion 40 is composed of an upper roller 52 having a corrugated cutter 50 and a lower roller 53 having a circumferential groove 51 into which the cutter 50 is inserted, as shown in FIG. ing. The cutting means 41 is shown in FIG. 3 and FIG.
An upper roller 56 having a disk-shaped upper cutter 55 as shown in FIG.
And a lower roller 58 having a lower cutter 57, in which the upper and lower cutters 55 and 57 of the cutting portion 41, the heater plates 46a and 46b, and the cutter 50 of the perforation forming portion 40 are arranged from the outside in the width direction of the film 4. Are arranged in sequence.

Reference numeral 62 denotes a dust removing shooter having an opening 62a at the upper end thereof. The dust removing shooter 62 is attached to each support plate 36 at the rear position of the cutting means 41, and blows air by a blower device 63. Blow onto the opening 62a from above,
The scrap 4b of the film 4 cut by the cutting means 41,
It is adapted to be accumulated at a predetermined place through the scraper shooter 62. Note that the dust removing shooter 62 may be configured to suck with a suction device.

An embodiment of the present invention has the above-mentioned configuration,
Next, an example of its use will be described. First, the plurality of containers 3 are transferred by the transfer device 1 with a predetermined interval, and when the containers 3 are transferred to the packaging machine 5, they are pushed by the transfer body 17 and transferred on the mounting table 16, and One chopstick 9 is supplied in front of each container 3 (see FIG. 5A).

Further, when the container 3 is transferred while pushing the chopsticks 9, the sensors 29, 29 detect the container 3, and air is jetted upward from the chopstick air nozzles 28, 28, so that the chopsticks 9 move. The container 3 with the front side lifted upward and standing upright
Along the front surface 3a (see FIG. 8B). Furthermore, container 3
Is pushed into the vertically stretched film 4, but at this time, air is ejected from the air nozzles 26, 26 toward the folded film 4 by the signals of the sensors 29, 29 (Fig. 6a), the film 4
Both ends 4a of the film 4 are not bent backward or wrinkled, and the front surface of the film 4 is substantially linear in a plan view as shown in FIG.

Next, when the container 3 is transferred to the conveyor roller 20, the container 4 is pressed by the pressing roller 19 with its front surface and upper and lower surfaces covered with the film 4, and the stretch bar 22 descends to lower the film 4. And the back of the container 3 is also covered with the film 4, the film 4 is cut by the cutter 23 (see FIG. 6B), the tip of the film 4 is adsorbed by the adsorbent 15, and the container 3 is closed. The film 4 to be coated is bent below the container 3 by the moving roller 18, and the rear surface side of the container 3 is further coated (see FIG. 6C).

Further, the container 3 is transferred to the side seal device 30, and first, both edge portions 4a of the film 4 are pulleys 39a and 39b.
It is pinched by and is transported by the belt 45. Next, the perforations 64 are formed on both ends 4a by the perforation forming section 40 (see FIG. 4A), and then the extra portion 4b of the both ends 4a is cut by the cutting means 41. 4b is a shooter for removing dust by the air blown from the blower device 63 as dust.
It enters 62 and is collected in a predetermined place (see FIG. 4B).

The container 3 is further transferred and both ends of the film 4 are transferred.
The film 4a is reliably sealed by the sealing means 42.
After the seal portion L is formed over the entire length in the front-rear direction, it is shrink-wrapped by the shrink device 7. At this time, the perforation 64 has a function of a deaeration port and the shrink-wrapping is effective. It is done. Also,
The perforations 64 also have an effect that they can be easily opened.

The present invention is not limited to the above embodiment, and for example, in the above embodiment, the chopsticks 9 and the container 3 are used.
The chopsticks 9 do not necessarily have to be supplied, and the object to be packaged is not limited to the food container 3. Also, as an upright means, an air nozzle for chopsticks
In addition to 28, 28, the rod may be moved up and down by a solenoid or the like, or the container 3 may be fixed and the film 4 side may be moved. Moreover, the film 4 does not necessarily have to have heat shrinkability, and shrink wrapping is not an essential condition. Further, it goes without saying that the film may be packaged in a so-called four-sided seal packaging in which four sides of the film 4 are sealed.

[0024]

The film side-sealing device of the present invention comprises a cutting means for cutting the outside of the sealing portion at both ends of the film, and a scrap removing device for accumulating scraps at both ends cut by the cutting means. Since the film is provided with, the extra portions do not remain at both ends of the film for packaging the packaged object, and therefore, there is an advantage that the packaging form can be improved and the commercial value can be improved.

Moreover, since the collecting device collects the scraps at both ends of the cut, there is no possibility that the scraps of the film cut by the cutting device are scattered.

[Brief description of drawings]

FIG. 1 is an overall schematic diagram showing an embodiment of the present invention.

FIG. 2 is a side view including a partial cross section showing an embodiment of the present invention.

FIG. 3 shows an embodiment of the present invention, (a) is a plan view,
(B) is a front view.

FIG. 4 is a side view showing an embodiment of the present invention, in which (a) and (b) include a partial cross section.

FIG. 5 shows an embodiment of the present invention, wherein (a) and (b) are schematic views of coating a container with a film.

FIG. 6 shows an embodiment of the present invention, wherein (a) to (c) are schematic views of coating a container with a film.

FIG. 7A is a plan view of a main part, and FIG. 7B is a cross-sectional front view of the main part.

FIG. 8A is a plan view of an essential part, FIG. 8B is a perspective view of an essential part,
(C) is a plan view.

[Explanation of symbols]

3 ... Container (package), 4 ... Film, 4a ... Both ends, 41
... Cutting means, 45, 48a, 48b ... Feed belt, 62 ... Dust removal shooter, 62a ... Opening portion, 63 ... Blower device, L ... Sealing portion

Claims (2)

[Claims] 1. A pair of upper and lower feed belts (45), (48a), (48b) for transferring both end portions (4a) of a packaging film (4) for covering an article to be packaged (3), and the both ends. A film side-sealing device comprising: a heat-sealing means (42) for continuously heat-sealing a portion (4a), which is cut outside the sealing portion (L) at both end portions (4a) of the film (4). A film side seal device comprising: a cutting means (41) for cutting and a scrap removing device for accumulating scraps (4b) at both ends (4a) cut by the cutting means (41). 2. The debris removing device is located on the rear side of the cutting means (41) and has a debris removing chute (62) having an opening (62a) on its upper surface, and an upper part toward the opening (62a). The film side sealing device according to claim 1, comprising a blower device (63) for blowing air from the side.