JPH05132019A - Packaging apparatus for article with folded film - Google Patents

Abstract

PURPOSE:To make articles to be packaged transferable smoothly to a sealing mechanism without being changed in directions, neither being inclined, deformed nor damaged in a process of packaging with a folded film. CONSTITUTION:The title apparatus is constructed of a transfer belt conveyer C, a roll film mechanism A composed of a number of rolls unwinding folded films F, film mouth-opening mechanisms B in right-angled equilateral triangular shapes provided above and below the transfer belt conveyer C, and a sealing mechanism D. An air nozzle 19 is provided between the mouth-opening mechanism B provided above the transfer belt conveyer C and the transfer belt conveyer C so that the nozzle faces toward either the roll film mechanism A or the sealing mechanism D from the sloped side of the mouth-opening mechanism B.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging apparatus for a packaged article with a so-called half-folded film made of two folds made of synthetic resin or the like, and more specifically, enables stable and smooth transfer of the packaged article and the half-folded film. The present invention relates to a device for packaging an article to be packaged with a half-folded film.

[0002]

2. Description of the Related Art Conventionally, in a device for packaging an object to be packaged with a half-folded film made of synthetic resin or the like, the half-folded film is vertically moved as described in, for example, Japanese Patent Application No. 1-278664. A film having a U-shaped cross-section with both pieces and its folded portion is generally composed of two upper and lower right-angled isosceles triangular members in order to convert the flow direction of the film into a direction perpendicular to the flow direction from the roll film mechanism. A mouth opening mechanism is used. A belt conveyer mechanism for transferring the articles to be packaged is usually arranged between the isosceles right triangle members.

The upper piece and the lower piece of the half-folded film folded by the opening mechanism are passed through the space formed by the upper and lower members of the opening mechanism to form a U-shaped cross section.

The article to be packaged is fed by the belt conveyor mechanism between the upper piece and the lower piece of the film.
Then, the object to be packaged and the film edge are guided to a sealing mechanism and sealed.

[0005]

However, in the above-mentioned conventional packaging apparatus, the article to be packaged on the belt conveyor often comes into contact with the side edge of the sagging film upper piece to change its direction or tilt. there were. Further, there is a problem that the object to be packaged hits the vicinity of the seal portion at the tip of the film and the corners are deformed or damaged, and it has been desired to solve these problems.

[0006] Therefore, a first object of the present invention is to provide a packaging device for a packaged article by means of a half-folded film which can be smoothly carried without the packaged article changing direction or tilting during transfer. is there.

A second object of the present invention is to provide a packaging device for a packaged product using a half-folded film which does not deform or be damaged during transfer.

[0008]

The above object of the present invention can be achieved by the following means. That is, the packaging device for a packaged product with a half-folded film of the present invention is a transfer belt conveyor mechanism for transferring the packaged product, a so-called half-folded film that is folded in two substantially orthogonal to the transfer direction of the transfer belt conveyor mechanism. A roll film mechanism consisting of rolls for feeding
A right angle that is located in front of the supply of the half-folded film and is provided above and below the belt conveyor mechanism, and one of the sides sandwiching the right angle is located on the roll side of the roll film mechanism. The film has an isosceles triangular film opening mechanism, and a sealing mechanism that is provided in the front of the transfer direction and seals the transferred object to be packaged. At least one side edge portion of the upper piece portion and the lower piece portion of the folded film has an opening edge that is folded back at a predetermined angle in the transfer direction of the transfer belt conveyor mechanism to form a U-shaped film in cross section, and In a packaging device of a half-folded film in which a space through which the upper piece part of the U-shaped cross-section film and the object to be packaged are provided between a transfer belt conveyor mechanism and an upper opening mechanism, With the upper mouth opening mechanism Feeding a between the belt conveyor mechanism, and wherein the air nozzle from the inclined side of the mouth opening mechanism toward the roll film side or the sealing mechanism side.

[0009]

The present invention brings about the following actions by the above-mentioned constitution. First, the half-folded film fed from the roll film mechanism is appropriately guided from the guide roll to the opening mechanism. The film is inverted and turned upside down to form a U-shaped cross section by one side of the upper and lower members parallel to the guide rolls of the pair of upper and lower right-angled isosceles triangles provided in the mouth opening mechanism. Then, the film is drawn out in a direction perpendicular to the feeding direction.

The leading end of the film is temporarily sealed by a sealing mechanism provided in front of the belt conveyor mechanism. Then, the belt conveyor mechanism is operated,
The article to be packaged on the belt conveyor is fed into the U-shaped film. That is, by conveying the belt conveyor, the article to be packaged is automatically transferred together with the film, and is sequentially sealed in a bag shape by the sealing mechanism and packaged.

When the leading end of the film is sealed,
The inner wall of the U-shaped portion of the film is between the upper opening mechanism and the belt conveyor mechanism, and is aired by an air nozzle arranged from the inclined side of the opening mechanism toward the roll film side. Then, the U-shaped portion of the film expands toward the belt conveyor mechanism side. Further, when the air nozzle is arranged from the inclined side of the mouth opening mechanism toward the sealing mechanism, when the front end of the film is sealed, the U-shaped portion of the film is formed by the air nozzle. Upon receiving the blowing of air, it expands toward the sealing mechanism side.

[0012]

EXAMPLES The present invention will be described in more detail below with reference to examples. FIG. 1 is a schematic view showing an example of a packaging device for a packaged article using the half-folded film of the present invention. A is a roll film mechanism including a group of rolls for feeding the half-folded film F, and includes a half-folded film winding roll 1, a support roll 2 of the winding roll 1, guide rolls 3 to 6 of the film, and the like. As shown in FIG. 3, the feeding guide roll 7 is located at the intermediate position between the upper and lower two right-angled isosceles triangular members 8 and 9 of the film opening mechanism B, and one side ab and a'b of the member. It is mounted parallel to the '. Then, the upper and lower right-angled isosceles triangular members 8 of the opening mechanism B,
As shown in FIGS. 2 and 3, reference numeral 9 is an isosceles right triangle a, b, c as viewed from the upper surface or the lower surface, and the transfer belt conveyor mechanism C is arranged between them at appropriate intervals. And are installed so that they overlap. The upper and lower right-angled isosceles triangular members 8 and 9 have one side ab (a'b ') and one hypotenuse bc (b'C') or two upper and lower sides, respectively.
Connected with two circular bars 10 (10 ', 10 "), 11 (11', 11"), and the other side
The ac (a'c ') is connected by the long plate 12 (12'). The distance between the upper right isosceles triangular member 8 and the lower right isosceles triangular member 9 can be adjusted by the screw rod 13 and the fastener 14.

C is a transfer belt conveyer mechanism, and the belt conveyer 15 is provided between the upper right-angled isosceles triangular member 8 and the lower right-angled isosceles triangular member 9 and one side ab (a ',
It is installed in the same direction as b '). In addition, belt conveyor
15 has a drive roll 16, a driven roll 17, and a guide roll 18.

In the embodiment shown in FIGS. 1 and 2, an air nozzle 19 is arranged between the upper right isosceles triangular member 8 and the belt conveyor mechanism C and from the oblique side of the member toward the roll film mechanism A side. Air is blown toward the U-shaped inner wall of the film.

The air nozzle 19, the opening mechanism B, and the belt conveyor mechanism C are all mounted on a slide plate (not shown) of the underframe 20, and can be appropriately moved back and forth by a handle (not shown). it can.

In the embodiment shown in FIGS. 5 and 6, between the upper right isosceles triangular member 8 and the belt conveyor mechanism C and from the hypotenuse of the member toward the sealing mechanism D side, the belt conveyor mechanism C is An air nozzle 19 is provided on the front side of the object W to be transferred. When the air nozzle 19 is provided at this position, the direction in which the U-shaped portion of the film F is bulged by air and the transfer direction of the article W to be packaged coincide with each other, so that the article W to be packaged is transported on the belt conveyor mechanism C. Film F
The film F can be uniformly bulged toward the transfer direction side of the object to be packaged W by the air until the object to be packaged W is in contact with the film F can be further prevented.

Reference numeral D denotes a sealing mechanism provided at the front of the belt conveyor in the transfer direction, which is an L-shaped sealing device 21 and a base 2
2 and a belt conveyor 23 for transferring the film to the shrink wrapping tunnel (not shown) for close contact with the outer periphery of the object W to be packed sealed by the L-type sealer.

The opening mechanism B changes the direction of the film F fed from the roll film mechanism A shown in FIG. 4 through the feeding guide roll 7 as shown in FIG. Turn it over and make the cross section of the film U-shaped. That is, the upper piece f ₁ of the half-folded film F is put on the hypotenuse bc from the upper side of the upper right-angled isosceles triangular member 8, then turned over along the lower side of the hypotenuse, and pulled out in the lateral direction at right angles. On the other hand, the lower side f ₂ is covered from the lower side of the lower right-angled isosceles triangular member 9 to the hypotenuses b ′ and c ′, and then turned upside down along the upper side of the hypotenuse, so that the lower side f ₂ is laterally perpendicular to the upper piece f _1. Be drawn to. In this way, a film having an inner wall f ₃ and having a U-shaped cross section is continuously formed.

Here, the angle between the side ab (a'b ') and the side ac (a'c') of the upper and lower right-angled isosceles triangular members 8 and 9 is 90.
°, side ab (a'b ') and side bc (b'c'), and side ac (a'c ') and side bc
The angle formed by (b'c ') is generally 45 °, and it is preferable that the upper right-angled isosceles triangular member 8 and the lower right-angled isosceles triangular member 9 have the same shape.

In the case of using the apparatus for packaging a packaged article using the half-folded film of the present invention, the packaged article W is transferred more smoothly and regularly than in the case of using the conventional apparatus. Moreover, the deformation and damage of the packaged object W are significantly reduced.

[0021]

As described above, the apparatus for wrapping an object to be wrapped with the half-folded film of the present invention comprises an air nozzle and blows air toward the inner wall of the formed U-shaped film by the air nozzle. Since the U-shaped portion of the film expands as a result, the packaged object can be smoothly and regularly transferred without the packaged object being scratched or tilted to the film during transfer and its direction being changed. You can

Moreover, it is possible to remarkably reduce the deformation and damage of the corners of the packaged article due to the packaged article being thrust into the vicinity of the tip seal portion of the film.

[Brief description of drawings]

1 is a cross-sectional view of the device of the present invention.

FIG. 2 is a perspective view of the device of the present invention.

FIG. 3 is a perspective view showing a mouth opening mechanism used in the device of the present invention.

FIG. 4 is a side view showing a roll film mechanism used in the apparatus of the present invention.

FIG. 5 is a cross-sectional view of the device of the present invention.

FIG. 6 is a perspective view of the device of the present invention.

[Explanation of symbols] A roll film mechanism B opening mechanism C transfer belt conveyor mechanism D sealing mechanism F half-folded film W packaged f ₁ film upper piece f ₂ film lower piece f ₃ film inner wall 1 winding roll 2 support roll 3 Guide roll 4 Guide roll 5 Guide roll 6 Guide roll 7 Feeding guide roll 8 Upper right-angled isosceles triangular member 9 Lower right-angled isosceles triangular member 10 Upper circular rod (ab) 10 'Upper part of isosceles triangular member Bottom isosceles right triangle member (ab) 10 "Bottom isosceles isosceles triangular member bar (a'b ') 11 Top isosceles isosceles triangular member top bar (bc) 11' Top Lower isosceles triangle triangular rod (bc) 11 "Lower right isosceles triangular rod (b'c ') 12 Long plate (ac) 12' Long plate (a'c ') 13 Screw rod 14 Fasteners 15 Belt conveyor 16 Drive roll 17 Driven roll 18 Guide roll 19 Air nose 20 units 21 L type sealer 22 units frame 23 Belt conveyor

Claims (2)

[Claims] 1. A transfer belt conveyor mechanism for transferring an article to be packaged, a roll film mechanism including a group of rolls for feeding a half-folded film substantially orthogonal to a transfer direction of the transfer belt conveyor mechanism, and a supply of the half-folded film. Located in the front,
Further, a film opening mechanism for a film in the shape of an isosceles right triangle, which is provided above and below the transfer belt conveyor mechanism, and one of the sides sandwiching the right angle is located on the roll side of the roll film mechanism. , And a sealing mechanism that is provided in front of the transfer direction and seals the transferred object to be packaged, wherein the opening mechanism is an upper half part and a lower half part of the half-folded film that has been opened. Of at least one of the side edges of the transfer belt conveyor mechanism is folded back at a predetermined angle in the transfer direction so that the film has a U-shaped cross section, and the transfer belt conveyor mechanism and the upper opening are opened. In a packaging device for a packaged article by a half-folded film in which a space through which at least the upper piece part of the U-shaped cross-section film and the packaged article pass is provided between the mechanism and the upper opening mechanism. An air nozzle is provided between the feeding belt conveyor mechanism and from the inclined side of the mouth opening mechanism toward the roll film mechanism side. .. 2. A transfer belt conveyor mechanism for transferring an article to be packaged, a roll film mechanism including a group of rolls for feeding a half-folded film substantially orthogonal to the transfer direction of the transfer belt conveyor mechanism, and supply of the half-folded film. Located in the front,
Further, a film opening mechanism for a film in the shape of an isosceles right triangle, which is provided above and below the transfer belt conveyor mechanism, and one of the sides sandwiching the right angle is located on the roll side of the roll film mechanism. , And a sealing mechanism that is provided in front of the transfer direction and seals the transferred object to be packaged, wherein the opening mechanism is an upper half part and a lower half part of the half-folded film that has been opened. Of at least one of the side edges of the transfer belt conveyor mechanism is folded back at a predetermined angle in the transfer direction so that the film has a U-shaped cross section, and the transfer belt conveyor mechanism and the upper opening are opened. In a packaging device for a packaged article by a half-folded film in which a space through which at least the upper piece part of the U-shaped cross-section film and the packaged article pass is provided between the mechanism and the upper opening mechanism. Feeding a between the belt conveyor mechanism, and apparatus for packaging articles to be packaged by a semi-folded film, characterized in that the air nozzle from the inclined side of the mouth opening mechanism toward the sealing mechanism side.