WO2011048653A1

WO2011048653A1 - Packaging device

Info

Publication number: WO2011048653A1
Application number: PCT/JP2009/068018
Authority: WO
Inventors: 文夫宮原; 充範斉藤; 義之辻; 伸人山内
Original assignee: 大紀商事株式会社; 椿本興業株式会社; 株式会社ファブリカトヤマ
Priority date: 2009-10-19
Filing date: 2009-10-19
Publication date: 2011-04-28
Also published as: JPWO2011048653A1; JP5286421B2

Abstract

A packaging device requiring a reduced floor space for installation of the device, capable of being adjusted to a change in the size of a packaged body, and capable of reducing the region of width sealing. A width sealing device (20) is provided with clamping width sealing members (21, 22) moving at the same speed as a double folded film and clamping the double folded film, and also with a cutter member (23). The double folded film is subjected to width sealing and cutting in a width sealing region to form an open-mouthed bag (F2). Conveyance devices (30, 60) are provided with pinch members (32, 62) provided to a pair of endless travel bodies (31, 61). The pinch members clamp and hold the open-mouthed bag (F2) at an edge thereof and travel at a speed higher than the travel speed of a double folded film forming device. A filling device (40) is configured in such a manner that a nozzle member (45) enters the inside of the opening edge of the double folded film at a position on the upstream side of the width seal device (20). In filling operation, the nozzle member (45) moves at the same speed as the endless travel body of the conveyance device and performs content filling operation. An upper edge seal device (50) moves at the same speed as the endless travel body of the conveyance device (30) and clamps the upper edge of the open-mouthed bag (F2).

Description

Packaging equipment

The present invention relates to a packaging apparatus, and more particularly to a packaging apparatus that obtains individually separated packages by sealing and filling the folded film into two pieces.

For example, an apparatus disclosed in FIG. 6 of Patent Document 1 is known as such a packaging apparatus. This known device includes a rotary-type swivel holding device, the swivel holding device has a clamping member arranged at regular intervals in the circumferential direction, and the film folded in half in the width direction is opened upward. Hold by the clamping member. The bi-fold film is width-sealed at regular intervals at the entrance to the swivel holding device, and the opening bag is continuous, and moves in the circumferential direction while being held by the clamping member at the width seal portion. A chute enters each open bag from above and is filled with contents. The open bag filled with the contents is continuously fed out from the swivel holding device, the upper edge is sealed by the edge seal device, and then the width seal portion is cut or perforated by the perforation cutting device. It is now possible to separate and obtain individual packages.

Japanese Patent No. 3771752

However, in the known device disclosed in FIG. 6 of Patent Document 1, the size of the device increases, the size of the package, that is, the distance between the width seal portions cannot be changed, the width seal portion. There was room for improvement, for example, by having to increase the sealing area.

First, since the operation from the width seal to the filling of the contents is performed by the rotary swivel holding device, the number of stations is large in order to obtain time for performing this operation reliably. Therefore, the turning radius must be increased. This forms an unused space radially inward with respect to the swivel portion, and accordingly, a large floor area is required for the apparatus.

Second, since the bi-fold film held by a plurality of clamping members provided at regular intervals in the swivel holding device is continuous, the size of the package obtained after separation is constant, and the packaging When a change in body size is requested, this cannot be accommodated. In order to cope with this, it is necessary to change the circumferential arrangement pitch of various members including the clamping member and the chute, which requires a very large-scale device modification.

Next, thirdly, since the means for performing the width seal and the means for forming the cut or perforation are located apart from each other in the film feeding direction, the width seal portion of the continuous open bag where the width seal is performed. When it reaches the position of the means for cutting or perforating, the width seal portion may be displaced from the normal position. In consideration of the possibility, in order to cut or perforate the width seal portion, the seal area of the width seal portion (especially the width in the film feeding direction) must be increased. This causes a situation of waste of the film or a decrease in the filling volume of the contents for the package, and causes problems such as an increase in the width seal member and an increase in energy used for sealing for the apparatus. .

In view of such circumstances, the present invention requires a small floor area for installing the apparatus, can easily cope with a change in the size of the package, and can reduce the width seal area in the package. It is an issue to provide.

In the packaging device according to the present invention, the side edges of the belt-like film on which the weldable surfaces are formed face each other between the weldable surfaces, the film is folded in the width direction, the lower edge is folded, and the upper edge is A half-fold film forming apparatus that linearly runs in the lateral direction that is the longitudinal direction of the film while forming a half-fold film with an open edge, and a half-fold film that is received from the half-fold film forming apparatus and that is Sealing is carried out in the width direction at regular intervals in the longitudinal direction with respect to the conveying device that linearly conveys as the conveying direction, and the half-folded film forming device and the conveying device that are positioned between the conveying device A width sealing device that forms an open bag having an open upper edge, a filling device that fills the open bag being conveyed at a position downstream of the width seal device with a nozzle member, and the filling device Downstream position than, and an upper edge sealing device for sealing an opening edge of the opening bag during transport.

In such a packaging apparatus, in the present invention, the width sealing device moves at the same speed as the half-folded film at the time of width sealing, and a pair of clamping width sealing members that clamps the half-folded film from both sides during the movement. And a cutter member supported by one of the clamping width seal members, and individually performing a width seal by the clamping width seal member and cutting the half-fold film in the width seal region by the cutter member It is designed to form a separate open bag,
The conveying device includes a pair of endless traveling bodies and pinch members provided at regular intervals on the endless traveling body, and corresponding pinch members of the pair of endless traveling bodies form an opening bag at an edge of the opening bag. The endless traveling body is set to travel at a speed higher than the traveling speed in the half-fold film forming apparatus,
In the filling device, the nozzle member enters the open edge of the half-folded film at a position upstream of the width sealing device and moves to the downstream side at the same speed as the endless traveling body of the conveying device at the time of filling. After filling the opening bag with the contents in the downstream area, the nozzle member is pulled out from the opening bag,
The upper edge sealing device moves at the same speed as the endless traveling body of the conveying device at the time of upper edge sealing, and sandwiches and separates from both sides of the upper edge of the opening bag after the nozzle member is pulled out. It has a member and forms a package by an upper edge seal.

In the device of the present invention having such a configuration, the packaging device is located on a straight line from the half-folded film forming device that forms the half-folded film to the transport device that transports the package filled with the contents. There is no dead space and the floor space required for installation is small.

Further, in the device of the present invention, at the same time as the width sealing in the width sealing device, the individual opening bags are separated and formed by the cutter member at the width sealing portion, and then opened by the nozzle member in a state where the conveying speed is increased by the conveying device. Since the contents are filled in the mouth bag, the opened bags are filled with each other in the conveying direction, and the opening bags are not welded to each other when sealing the upper edge of the opened bag. The upper edge seal member clamps and seals the upper edge over the entire length in the conveying direction. In addition, since the pitch distance between the opening bags can be adjusted by changing the speed increase rate of the transport device, it is possible to cope with changes in the size of the package (size in the transport direction). .

Furthermore, in the present invention, since the cutting by the width seal and the cutter member is simultaneously performed at the same position in the transport direction (cutting in the width direction seal region), the position of the width seal and the cutting position are shifted in the film feeding direction. Therefore, even if the width seal region is made extremely small, the cutting does not deviate from the width seal region.

In the present invention, the transport device is located on the downstream side with respect to the width seal device in the transport direction, and reaches a range including the position of the upper edge seal device, and downstream of the constant speed transport device. It is possible to have a variable speed transfer device located on the side. Such a constant-speed transfer device and a variable-speed transfer device form an overlapping area in the transfer direction, and the variable-speed transfer device is positioned above the constant-speed transfer device in the vertical direction. The variable speed conveyance device has a pinch member for sandwiching the upper edge of the package body, and a pinch member for sandwiching the front end edge of the package body after the opening bag and the upper edge seal. When the package is delivered from the constant speed conveyance device to the variable speed conveyance device, the variable speed conveyance device is accelerated at the same speed as the constant speed conveyance device, and the endless traveling body travels after delivery.

In such an embodiment, the transfer device is composed of a constant speed transfer device and a variable speed transfer device. During the conveyance with the constant-speed conveyance device, individually opened opening bags are formed, the contents are filled into the opening bags, and then the upper edge of the opening bag is sealed to form a package. The package is delivered to the variable speed conveyance device, where the pitch between the packages is enlarged, and the package can be easily transferred to another device for the next process. Since the variable transport device intermittently has the same transport speed as the constant speed transport device, the package is delivered from the constant speed transport device to the variable speed transport device at this time.

In the present invention, the width sealing device is an anvil in which one clamping width seal member is an ultrasonic horn, the other clamping width seal member is pressed against the ultrasonic horn, and the cutter member is a width seal. It may be supported by the anvil in a state of being biased toward the ultrasonic horn at a position within the region.

In the present invention, the half-folded film forming apparatus has an upstream guide that guides the lower edge of the half-folded film, and the conveying device is at least the lower edge of the open bag and the package on the downstream side of the upstream guide. The width seal device is set so as to return to the original position on the upstream side in a state in which the pair of pinching width seal members are separated when not sealed, and the upstream guide and the downstream guide The downstream end of the upstream guide and the upstream end of the downstream guide are preferably located close to the width sealing device and move with the movement of the width sealing device toward the downstream side and upstream side.

The clamping width seal member for the width seal has a size (height) protruding from the upper and lower edges of the half-fold film. When the clamping width seal member moves at the same speed as the half-folded film during the sealing time, if a guide for supporting the lower edge of the half-folded film is required, the half-folded film forming apparatus and the transport are carried over the distance of the movement. The guide cannot be provided between devices. When the guide is absent, the front end of the half-fold film and the opening bag formed by width sealing and cutting may become unstable, and the posture may be lost and transferred to the conveying device. In the present embodiment, the upstream guide that moves close to the width sealing device and moves with the width sealing device eliminates the guide absence region and stabilizes the posture of the open bag.

As described above, the present invention is configured such that the film or the package moves in the linear direction in the entire range from the half-fold film forming apparatus to the conveying apparatus, so the apparatus has no dead space and the required floor area. The size of the opening bag is changed because the individual opening bags are formed by separating the width sealing portion at the same time as the width seal and the individual opening bags are formed at an increased speed and transported by the transport device. However, it is possible to easily respond to changes in the size of the package by simply changing the pitch distance between the front and rear open bags, and the width seal and the separation by the cutter member are the same at the same position. As a result, there is no deviation between the position of the width seal in the conveying direction and the position of cutting and separating by the cutter member. , It is possible to increase the package compactness or contents.

1 is a perspective view showing a schematic configuration of an apparatus according to an embodiment of the present invention. It is a side view which shows the width seal apparatus of the apparatus as a preferable form of this invention, an upstream and downstream guide, and its drive mechanism.

DESCRIPTION OF SYMBOLS 10 Half-fold film forming apparatus 20 Width sealing apparatus 21 Clamping width sealing member (ultrasonic horn)
22 Clamping width seal member (anvil)
23 Cutter member 30 Conveying device (Constant speed conveying device)
31 Endless traveling body 32 Pinch member 40 Filling device 45 Nozzle member 50 Upper edge sealing device 51 Nipping pressure upper edge sealing member 60 Conveying device (variable speed conveying device)
61 Endless traveling body 62 Pinch member 91 Upstream guide (belt)
92 Downstream guide (belt)

Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

In FIG. 1, reference numeral 1 denotes a turning roller for the belt-like film F that travels, and turns the belt-like film F drawn out from an underlying fabric (not shown) in the horizontal direction. In the belt-like film F, in this embodiment, the upper surface of the belt-like film immediately after turning by the turning roller 1 is a weldable surface. Films having such weldable surfaces are known and will not be described in detail.

As shown in FIG. 1 (A), the apparatus of the present embodiment has a half-fold film forming device 10, a width sealing device 20, a constant speed toward the downstream side of the turning roller 1 in the traveling direction A of the belt-like film F. A conveying device 30, an upper edge sealing device 50, a variable speed conveying device 60, and a delivery device 70 are disposed. Further, a filling device 40 is disposed above the range of the half-fold film forming device 10 and the constant speed conveying device 30. It is arranged. Hereinafter, each device will be described.

The half-fold film forming apparatus 10 includes a pair of feed rollers 11 that have an axis in the vertical direction and press the half-fold film F1 to rotate and feed it at a predetermined rotational speed, and a trailing edge ( And a wedge-shaped separating member 12 having an upstream edge) as an edge. The half-folded film forming apparatus 10 also includes side guides made up of, for example, a pair of endless running bodies that support and guide the half-folded film F1 from both sides between the spacing member 12 and the width sealing device 20. It is good as well. In such a half-fold film forming apparatus 10, the feeding roller 11 is in a state where the belt-like film F is a half-fold film F1 with the lower edge as a bent edge and the upper edge as an open edge so that the weldable surfaces face each other. The separation edge 12 is sent downstream at a predetermined speed (also referred to as the front), and the opening edge of the half-folded film F1 is positioned between the films on the opening edge side of the half-folded film F1. A constant distance d is formed between the films.

A constant-speed conveyance device 30 is disposed immediately downstream of the half-fold film forming apparatus 10, and a width sealing device 20 is provided between the half-fold film forming apparatus 10 and the constant-speed conveyance device 30. It has been. The width sealing device 20 has a pair of clamping

width sealing members

21 and 22 that move toward and away from each other at positions on both sides of the half-fold film F1. In the present embodiment, one clamping width seal member is an ultrasonic horn 21, and the other clamping width seal member is an anvil 22. As seen in FIG. 1B, the ultrasonic horn 21 and the anvil 22 have narrow widths at the opposed front end surfaces, and the opposed front end surfaces determine the width seal region of the half-fold film. The anvil 22 is divided into two

half members

22A and 22B having the same shape, and a thin cutter member 23 that is movable toward the ultrasonic horn 21 independently is supported therebetween. The anvil 22 and the cutter member 23 are separately biased toward the ultrasonic horn 21 by a spring (not shown) or the like. The ultrasonic horn 21 and the anvil 22 (and the cutter member 23), which are moved toward and away from each other, form a width seal by sandwiching the half-fold film F1 at the time of contact, and the cutter member 23 is within the width seal region. The half-folded film F1 is cut to separate and form the opening bags F2 that open upward.

The width seal device 20 reciprocates a predetermined distance in the film transport direction along with the movement of the ultrasonic horn 21 and the anvil 22 as the pair of sandwiched width seal members. That is, the ultrasonic horn 21 and the anvil 22 move to the downstream side at the same speed as the half-folded film F1 while sandwiching the half-folded film F1, and the predetermined distance corresponding to the time required for width sealing. After moving only to the downstream side, they are separated from each other, and are moved toward the upstream side by the quick return mechanism to return to the original position.

The constant speed conveyance device 30 has a conveyance speed larger than the film feeding speed in the half-fold film forming apparatus 10. The constant-speed conveying device 30 includes a pair of endless traveling bodies (for example, chains) 31 and 31 positioned on both sides of the open bag F2 formed and sent by the width sealing device 20, and each endless traveling body 31 includes Pinch members 32 are provided at regular intervals in the traveling direction (see also FIG. 1B). The distance between the pinch members 32 in the traveling direction is set to be larger than the dimension of the opening bag F2 in the same direction. The pinch members 32 of the pair of endless traveling bodies 31 are synchronized at the same position in the traveling direction, and sandwich the front end edge in the lower half of the opening bag F2, that is, the width seal portion of the front edge, in the vertical direction. It is designed to hold pressure.

The filling device 40 is formed in a range extending over both the half-fold film forming device 10 and the constant-speed transport device 30 in the transport direction, and is positioned on one side and above the both

devices

10 and 30. The filling device 40 includes a filling member 43 supported by a support member 42 attached to an endless traveling body 41 such as a chain at regular intervals, a rod member 44 supported by the support member 42 so as to be movable up and down, and the rod And a nozzle member 45 supported by the member 44. The filling device 40 includes a plurality of the support members 42 and nozzle members attached to the rod members 44 supported by the endless travel body 41 in a range where the endless travel body 41 travels in parallel with the half-folded film F1. 45 is set to move at the same speed as the conveyance speed of the constant-speed conveyance device 30, and the distance between the open bags F2 conveyed by the constant-speed conveyance device 30, that is, the front and rear clamping pressure seals The nozzle members 45 that are arranged at regular intervals so as to be the same as the distance between the pinch members 32 as members and are adjacent to each other at the front and rear are when the ultrasonic horn 21 of the width sealing device 20 and the anvil 22 are in contact with each other. Timing is set so as to be positioned before and after the ultrasonic horn 21 and the anvil 22.

The support member 42 and the filling member 43 supported by the support member 42 circulate together with the endless traveling body 41 at a horizontal plane, that is, at the same height. The filling member 43 is formed with a bowl-shaped quantitative receiving port 43 </ b> A, and before the nozzle member 45 reaches the half-folded film F <b> 1 in the half-folded film forming apparatus 10, the above-mentioned constant amount receiving is performed from a content supply device (not shown). A fixed amount of content is supplied to the mouth 43A. An openable / closable shutter member (not shown) is provided at the bottom of the fixed amount receiving port 43A. This shutter member is formed so that the weighing mass member of the content supply device travels with the filling member 43 above the filling member 43 without being provided in the fixed quantity receiving port 43A. May be provided.

The filling member 43 in which the quantitative receiving port 43A is formed is provided with a supply pipe 43B extending downward. The supply pipe 43B has an internal space extending vertically, and the internal space communicates with the quantitative receiving port 43A on the upper end side. A flange member 46 that connects the rod member 44 and the nozzle member 45 is supported on the supply pipe 43B so that the flange member 46 can slide up and down with respect to the supply pipe 43B. Therefore, when the rod member 44 moves up and down, the nozzle member 45 moves up and down with respect to the supply pipe 43B. When the shutter member provided at the bottom of the quantitative receiving port 43A is opened, the nozzle member 45 receives a quantitative content from the quantitative receiving port 43A via the supply pipe 43B and from the lower end opening 45A. The contents are dropped and supplied to the opening bag F2. The lower end opening 45A of the nozzle member 45 has a flat shape so as to facilitate entry between the open edges of the half-folded film, and the interval between the open edges of the half-folded film F1 in the half-folded film forming apparatus 10 The thickness is smaller than d. A roller-shaped cam follower 44A is provided at the upper end of the rod member 44, and guides to a cam (not shown) when the nozzle member 45 is in the traveling and conveying path of the half-fold film F1 and the open bag F2. It has come to be. The cam is linear along the direction of the travel and transport path, but rises on the upstream end side and the downstream end side in the vertical direction. Therefore, the nozzle member 45 that moves up and down together with the rod member 44 moves up and down, and its lower end opening 45A descends on the upstream side and enters between the open edges of the half-folded film F1, and rises on the downstream side. It is extracted upward from the opening bag F2. The shutter member in the quantitative receiving port 43A is opened when the lower end opening 45A of the nozzle member 45 is in the opening bag F2.

An upper edge sealing device 50 that seals the opening edge, which is the upper edge of the opening bag F2, from both sides within the conveyance range of the constant speed conveyance device 30 is disposed immediately after the filling device 40. . The upper edge sealing device 50 has a pair of pinching upper edge seal members 51, for example, an ultrasonic seal member or a heat seal member, and the length of both the pinching upper edge seal members 51 is the opening edge of the opening bag F2. Is set to cover enough. That is, at the time of sealing, the pinching upper edge seal member 51 slightly protrudes upstream and downstream from the opening edge, but there is a gap between the opening bag F2 being sealed and the opening bags before and after the opening bag. The pinching upper edge seal member 51 does not reach the front and rear opening bags. In other words, the transport speed of the constant speed transport device 30 is set to the film travel speed in the half-fold film forming apparatus 10 so that the sandwiching upper edge seal member 51 does not reach the front and rear opening bags. Than fast. Similar to the width sealing device 20, the upper edge sealing device 50 is at the same speed as the opening bag F2 with the pressing upper edge sealing member 51 holding the upper edge of the opening bag F2 during upper edge sealing. When the seal is completed, they are separated from the upper edges and returned to the original position on the upstream side by a quick return mechanism.

A variable speed transfer device 60 is disposed on the downstream side of the constant speed transfer device 30. The variable speed transport device 60 has a pair of endless traveling bodies 61 similar to the constant speed transport device 30, and each endless traveling body 61 is provided with pinch members 62 at regular intervals in the transport direction. Yes. The pinch member 62 is set so as to have an interval larger than the interval between the pinch members 32 in the constant speed conveying device 30. The pinch member 32 has a transport range defined so that an upstream portion of the pinch member 32 overlaps a wake portion of the endless travel body 31 of the constant speed transport device 30 in the transport direction. 61 in the position where the pinch member 62 of the endless bag 31 is sandwiched between the pinch member 62 and the pinch member 32 of the endless traveling body 31 is sandwiched between the lower side of the front edge of the opening bag F2. The endless traveling body 61 is located above the endless traveling body 31, and the endless traveling body 61 does not interfere with the endless traveling body 31 at the overlapping portion. The endless traveling body 61 of the variable speed transport device 60 is intermittently shifted between two transport speeds of constant speed and high speed. The endless traveling body 61 at the low speed is the same speed as the endless traveling body 31 of the constant-speed transfer device 30. In addition, the pinch member 62 of the endless traveling body 61 and the pinch member 32 of the endless traveling body 31 are configured so that after the former holds the upper edge of the packaging body F3 and the latter is opened, the packaging body F3 is delivered to the former. In addition, the timing and the position in the transport direction are determined.

A delivery device 70 is provided at the downstream side position of the variable speed conveyance device 60. The delivery device 70 receives the package F3 from the variable speed transport device 60 by pressing the lower edge of the package F3 at the rear end position of the variable speed transport device 60 (not shown). A pair of transfer members 71 for transferring In the case of this embodiment, the pair of delivery members 71 includes a pair of substantially “h” -shaped moving members 72 and a pinching member 73 extending forward from the upper end thereof. The moving member 72 has two

legs

72A and 72B, and both

legs

72A and 72B rotate relative to the pins 72A-1 and 72B-1 by pins 72A-1 and 72B-1 at their lower ends. Supported as possible. These two pins 72A-1 and 72B-1 are supported by

arms

74A and 74B that rotate forward by a quarter turn around each of two

shafts

73A and 73B provided below the pins 72A-1 and 72B-1, respectively. Has been. Accordingly, the moving member 72 translates forward and downward while maintaining the posture by the rotation of the

arms

74A and 74B, and returns to the original position. The pinching member 73 extending forward from the upper ends of the pair of moving members 72 is bent in a direction approaching each other.

The pair of moving members 72 are configured to reciprocate in the direction in which they move toward and away from each other as they move from the front to the bottom, and sandwich the package F3 that comes to the lower end side of the variable speed transport device 60. The pressure member 73 holds the pressure and receives it from the variable speed conveyance device 60.

The pinch member 62 of the variable speed conveyance device 60 is opened immediately after holding the packaging body F3 with the clamping member 73. At the time of receiving the package F3, the moving speed of the pressing member 73 and the transport speed at the low speed of the variable speed transport device 60 are the same. Thus, the package F3 is delivered by the delivery device 70 to the next process device. As an apparatus for the next step, for example, there is an outer packaging apparatus that forms a bag by forming a film traveling in the vertical direction while forming a cylindrical shape and laterally sealing it. In this case, the package according to the present embodiment device is an inner package, and the inner package is put into the outer bag formed by the outer package by the delivery device 70.

In this embodiment, how the package F3 is formed will be described below.
(1) The belt-like film F having a weldable surface drawn out from the raw fabric is changed in its running direction to the lateral direction by the direction changing roller 1, and the half-folded film F 1 by the pair of feed rollers 11 of the half-folded film forming apparatus 10. Is sent to the downstream side at a constant speed. The half-folded film F1 has a bent edge at the lower edge and an open edge at the upper edge. Further, the half-folded film F1 is formed such that the surfaces that can be welded face each other. The half-folded film F <b> 1 has its open edges widened by a predetermined distance d by the separating member 12.
(2) Nozzle of the filling device 40 that moves at the same speed as the half-folded film F1 between the open edges of the half-folded film F1 whose open edges are expanded by the predetermined distance d by the half-folded film forming apparatus 10 The member 45 descends and enters. The nozzle member 45 advances toward the downstream side at the same speed as the transport speed of the constant-speed transport device 30 while maintaining this lowered position up to the transport range of the constant-speed transport device 30.
(3) The half-folded film F1 is width-sealed at fixed intervals in the film running direction by the width sealing device 20 during its constant speed running. This width seal is made by an ultrasonic horn 21 and an anvil 22 as a pair of clamping width seal members, but simultaneously with this width seal, it is cut within this width seal region by a cutter member 23 and the upper edge is opened. Separated open bags F2 are formed. The ultrasonic horn 21 and the anvil 22 are positioned between two adjacent nozzle members 45 and advance at the same speed as the nozzle member 45 during sealing.
(4) The opening bag F <b> 2 is delivered to the constant speed transport device 30 having a transport speed faster than the film feed speed in the half-fold film forming apparatus 10. Therefore, in the constant speed conveyance device 30, the opening bag F2 is held between the pair of pinch members 32 of the constant speed conveyance device 30 at the lower part of the front edge, and the opening bags F2 adjacent to each other before and after the conveyance are in contact with each other. An interval is formed between them. The nozzle member 45 that moves forward at the same speed as the transport speed of the constant speed transport device 30 is still in the lowered position and remains in the opening bag F2. In this entering state, the shutter member in the quantitative receiving port 43A of the filling device 40 is opened, and the contents are supplied into the opening bag F2 through the nozzle member 45. After supplying the contents, the nozzle member 45 rises and is extracted from the opening bag F2. After the nozzle member 45 is extracted, the upper edge of the opening bag F2 is sealed by the upper edge sealing device 50 to form a package F3.
(5) The package F3 is delivered to the variable speed transport device 60 when the transport speed of the variable speed transport device 60 is low and becomes equal to the transport speed of the constant speed transport device 30. After delivery of the package F3 to the variable speed transport device 60, the transport speed of the variable speed transport device 60 is increased to a high speed, and the distance between the front and rear adjacent package bodies F3 is increased.
(6) Finally, after the package F3 is taken out from the variable speed conveyance device 60 by the delivery device 70, it is delivered to the device in the next step.

Next, a preferred embodiment of the present invention will be described.

In the half-folded film forming apparatus 10, in order to stabilize the posture and the height direction position of the half-folded film F1, the folding edge of the lower edge of the half-folded film F1 is guided to slide on the upstream side of the width sealing device 20. An upstream guide is preferably provided. Furthermore, immediately after the half-folded film F1 is width-sealed by the width sealing device 20 and separated by the cutter member 23 into individual opening bags F2, the opening bag F2 is pinched by the pinch member 32 of the constant speed conveying device 30. In order to stabilize the posture of the open bag F2 on the downstream side of the width sealing device 20 until the pressure is held at the bottom, it is preferable that a downstream guide similar to the upstream guide is provided. However, a pair of pressing width seals of the width seal device 20 that extends below the lower edge of the half-folded film F1 and moves back and forth by a predetermined distance in the transport direction between the upstream guide and the downstream guide. Since there is a member, if no measures are taken, there is a situation in which there is no upstream or downstream guide within the predetermined distance range, and it is difficult to improve the stability of the half-fold film or the open bag. The present embodiment is characterized in that in order to increase the stability, the guide ranges of the upstream guide and the downstream guide are moved together with the clamping width seal member.

FIG. 2 shows the apparatus viewed from the side in a range extending before and after the position of the clamping width sealing member (ultrasonic horn 21 and anvil 22) (only the ultrasonic horn 21 is shown in FIG. 2) of the width sealing apparatus. As shown, the clamping width seal member 21 is supported by the upper half of the crank-shaped support member 81. The lower half of the support member 81 is fixed to the movable block 82. A drive arm 83 extending upward is attached to the movable block 82, and a rod 84 of a drive cylinder (not shown) is connected to the upper end of the drive arm 83. The rod 84 that moves back and forth by the operation of the drive cylinder moves the movable block 82 back and forth by a predetermined distance, and the movable block 82 moves the clamping width seal member 21 back and forth by the predetermined distance via the crank-shaped support member 81. Is done. This predetermined distance is set to a distance that the pinching width seal member 21 moves to obtain a time required for the width seal.

An upstream guide belt 91 that slides and guides a bent edge, which is a lower edge of the half-folded film in the half-folded film forming apparatus, and an endless traveling body of a constant-speed conveying device on the downstream side are provided before and after the clamping width seal member 21. A downstream guide belt 92 that slide-guides the lower edge of the opening bag conveyed by the belt 31 is disposed.

The upstream guide belt 91 and the downstream guide belt 92 are arranged close to the front and rear of the pinching width seal member 21 in a symmetric manner with respect to the pinching width seal member 21, respectively. A movable roller 93; 94 adjacent to the seal member 21, an adjustment roller 95; 96 positioned below the movable roller 93; 94,

guide rollers

97A, 97B; 98A, 98B, and other guide rollers (not shown) positioned further back and forth. It is stretched by. The movable roller 93; 94 and the adjusting roller 95; 96 are rotatably supported by a substantially crank-shaped arm member 99; The arm members 99; 100 are fixed to the block members 101; 102, and the block members 101; 102 are connected to the connecting pieces 103; 104 extending downward from the movable block 82. The connecting rods 105; Connected to.

In this embodiment, when the pinching width seal member 21 of the width sealing device 20 moves back and forth, the rod 84 of the drive cylinder operates in the same direction in synchronism with the pinching width seal member 21 to move the drive arm 83. The movable block 82 is moved back and forth. When the movable block 82 moves back and forth, the connecting piece 103; 104 provided at the lower end of the movable block 82, the connecting rod 105; 106 connected thereto, and the arm member 99; 100 via the block member 101; Moves back and forth. Therefore, the movable rollers 93; 94 and the adjusting rollers 95; 96 supported by the arm members 99; 100 also move back and forth. Accordingly, since the

movable rollers

93 and 94 arranged close to the pinching width seal member 21 move back and forth together with the pinching width seal member 21, the close positional relationship with the pinching width seal member 21 is always maintained. The At this time, since the adjustment rollers 95; 96 move by the same distance as the movable rollers 93; 94, there is no change in the tension of the upstream and downstream guide belts 91; 92. Thus, since the upstream and

downstream guide belts

91 and 92 are always close to the pinching width seal member 21 from the front and the back, the upstream and

downstream guide belts

91 and 92 are also affected by the presence and movement of the pinching width seal member 21. Between 92, only a very narrow gap is formed, and the postures of the half-fold film F1 and the open bag F2 are stabilized.

The present invention is not limited to the illustrated and described embodiments, and various modifications are possible.

First, the transport device does not need to have both a constant speed transport device and a variable speed transport device, and only the former may be used. For example, when the package is taken out as it is without being brought into the next process, the former alone is sufficient.

Next, the width sealing device is not limited to ultrasonic sealing, but may be a device by other known methods, for example, a heat sealing device. In that case, it is desirable that the cutter member not only be pressed against the film surface but also move slightly upward or downward. Similarly to the width sealing device, the upper edge sealing device can be various types of devices.

In addition, as the endless traveling body of the transfer device, various types such as a chain and a belt can be adopted.

The present invention can be used in a packaging device for obtaining a package by sealing a width of a band-shaped film and cutting it to form an open bag, filling the content into the open bag, and then sealing the opening edge.

Claims

A half-fold film in which the side edges of the belt-like film on which the weldable surfaces are formed face each other between the weldable surfaces, the film is folded in two in the width direction, the lower edge is the bent edge, and the upper edge is the open edge A half-fold film forming apparatus that linearly runs in the lateral direction that is the longitudinal direction of the film while forming, and a transport apparatus that receives the half-fold film from the half-fold film forming apparatus and linearly transports the half-fold film with the longitudinal direction ahead as the transport direction And the upper edge is opened by sealing in the width direction at regular intervals in the longitudinal direction with respect to the half-fold film being transported located between the half-fold film forming device and the transport device A width sealing device that forms an open bag, a filling device that fills the open bag that is being transported at a position downstream of the width seal device with a nozzle member, and a transport at a position downstream of the filling device A packaging device having a upper edge sealing device for sealing an opening edge of the opening bag,
The width sealing device moves at the same speed as the half-folded film during sealing in the width direction, and a pair of pinched width sealing members that clamp the half-folded film from both sides during the movement, and one pinched width A cutter member supported by the seal member, and forming a separate open bag by cutting the half-folded film in the width seal region by the width seal region by the clamping width seal member and the width seal region by the cutter member Is supposed to
The conveying device includes a pair of endless traveling bodies and pinch members provided at regular intervals on the endless traveling body, and corresponding pinch members of the pair of endless traveling bodies form an opening bag at an edge of the opening bag. The endless traveling body is set to travel at a speed higher than the traveling speed in the half-fold film forming apparatus,
In the filling device, the nozzle member enters the open edge of the half-folded film at a position upstream of the width sealing device and moves to the downstream side at the same speed as the endless traveling body of the conveying device at the time of filling. After filling the open bag with the contents in the downstream area, the nozzle member is pulled out from the open bag,
The upper edge sealing device moves at the same speed as the endless traveling body of the conveying device at the time of upper edge sealing, and sandwiches and separates from both sides of the upper edge of the opening bag after the nozzle member is pulled out. A packaging apparatus having a member and forming a package by an upper edge seal.
The conveying device is positioned on the downstream side with respect to the width sealing device in the conveying direction, and is located on the downstream side of the constant speed conveying device and the constant speed conveying device that covers the range including the position of the upper edge sealing device The constant-speed transfer device and the variable-speed transfer device form an overlapping area in the transfer direction, and the variable-speed transfer device is positioned above the constant-speed transfer device in the vertical direction. The constant-speed transport device has a pinch member that clamps the opening bag and the front edge of the package after sealing the upper edge; the variable-speed transport device has a pinch member that clamps the upper edge of the package; 2. When the package is delivered from the constant speed conveyance device to the variable speed conveyance device, the endless traveling body travels at the same speed as the constant speed conveyance device after the delivery at an increased speed. The packaging device described in 1.
In the width sealing device, one clamping width seal member is an ultrasonic horn, the other clamping width seal member is an anvil that is pressed against the ultrasonic horn, and the cutter member is positioned in the width sealing region. The packaging device according to claim 1, wherein the packaging device is supported by the anvil while being urged toward the ultrasonic horn.
The half-fold film forming apparatus has an upstream guide that guides the lower edge of the half-fold film, and the conveying device is downstream of the upstream guide and guides at least the lower edge of the opening bag on the downstream side of the upstream bag. The width seal device has a guide and is set to return to the original position on the upstream side in a state where the pair of pinching width seal members are separated when not sealed, and the upstream guide and the downstream guide are downstream of the upstream guide. The end and the upstream end of the downstream guide are located close to the width sealing device and move with the movement of the width sealing device toward the downstream side and upstream side. The packaging device described in one.