WO2006080164A1

WO2006080164A1 - Filling-packaging machine

Info

Publication number: WO2006080164A1
Application number: PCT/JP2005/023313
Authority: WO
Inventors: Yasuhito Miyazawa; Toshiaki Nagasawa; Masaki Kumagai
Original assignee: Nippon Seiki Co., Ltd.
Priority date: 2005-01-31
Filing date: 2005-12-20
Publication date: 2006-08-03
Also published as: JP4402603B2; JP2006206153A

Abstract

A filling-packaging machine capable of satisfactorily performing lateral sealing by feeding a film while suppressing the occurrence of wrinkles on the film even if contents of a large capacity are filled in the film. The filling-packaging machine having a vertical/lateral sealing mechanism is characterized by comprising a drawing mechanism (7) positioned between a filling mechanism (6) and a lateral sealing mechanism (5) and having a pair of drawing rollers (7A) for correcting the thickness dimension of a tubular film (F) in which the contents (W) are filled by pressingly holding the swelled portion of the tubular film so that the thickness dimension can be reduced and a film correcting mechanism (8) positioned on the vertical sealing mechanism (4) side of the drawing mechanism (7) and having at least a pair of correcting rollers (8A) for pressingly correcting the thickness dimension of the tubular film (F) by pressingly holding the swelled portion of the film (F) from the outside to draw it by a more suppressed drawing amount than that by the drawing rollers (7A).

Description

Specification

Filling and packaging machine

Technical field

[0001] The present invention is, for example, a film roll strength film wound in a roll shape, which is packaged while being drawn out and transferred, and filled with contents such as a liquid or a granular material in the packaging bag. The present invention relates to a filling and packaging machine.

Background art

[0002] Conventionally, in a filling and packaging machine in which contents such as liquids and powders of this type are filled and packaged, for example, a film roll wound in a roll is fed and guided. Place the film on the bottom side and the bag mouth side of the film while feeding the cylindrical film by vertically sealing along the longitudinal direction of the film while sandwiching the film with a pair of vertical seal roll members There is a filling and packaging machine that continuously forms packaging bags that are vertically and horizontally sealed by a rotary roll type sealing mechanism that horizontally seals the film along the width direction of the film with a horizontal seal member of the horizontal seal roll. It has been. (For example, see Patent Document 1.)

Patent Document 1: JP-A-6-99914

Disclosure of the invention

Problems to be solved by the invention

[0003] In the filling and packaging machine according to Patent Document 1 or the like, the continuously-sealable packaging bag is perforated at the lateral seal portion of the packaging bag by the cutter mechanism on the downstream side of the lateral seal mechanism, It cuts and separates each packaging bag and carries it out.

[0004] By the way, in the conventional filling and packaging machine described above, the size of the continuously formed packaging bag is small and the amount of contents filled in the packaging bag is small. There is no problem, but when producing a large-capacity packaging bag with a large amount of contents with the horizontal sealing interval (seal pitch) of the packaging bag exceeding 100 mm, it is suspended continuously in a cylindrical shape. As the contents in the packaging bag being transported gathered at the lower end of the packaging bag, the center side of the packaging bag swelled and formed into a cylindrical shape that was transferred in the swelled state. When horizontal sealing is performed at a predetermined interval along the width direction of the packaging film, the film is pressed while pressing the cylindrical packaging bag against the outer surface as the horizontal sealing member of the horizontal sealing mechanism rotates. Heat sealing is performed in synchronism with the transfer. At this time, the center side of the cylindrical packaging bag is crushed while first contacting with the horizontal sealing member, and the entire film width direction is pressed from the cylindrical film portion, so that the film is slackened. If the film is sealed horizontally, the film will be partially folded as a result, causing a crease and a seal failure may occur immediately at the side seal. .

[0005] Therefore, the object of the present invention is to improve the lateral seal while suppressing the occurrence of wrinkles while feeding the film even when a large volume of content is filled. It is to provide a filling and packaging machine that can be performed.

Means for solving the problem

[0006] In the present invention, as described in the filling and packaging machine according to claim 1, the longitudinal seal that vertically seals the continuously transported film along the longitudinal direction of the film while being sandwiched by the pair of longitudinal seal roll members A mechanism that fills the cylindrical film vertically sealed by the vertical sealing mechanism with the contents via a filling nozzle, and a pair along the width direction of the film while feeding the cylindrical film. A filling and packaging machine comprising: a transverse sealing mechanism that continuously wraps a packaging bag by transversely sealing at a predetermined interval while being sandwiched between transverse sealing members of a lateral sealing roll formed therein. A pair of squeezing roller forces that are positioned between the mechanism and correct so that the thickness dimension becomes narrow across the bulging portion of the tubular film filled with the contents. A mechanism and at least a pair of pressure squeezed portions sandwiched from the outer surface side of the film in a state where the swelled portion of the tubular film is positioned from the outer side of the film in a state of being controlled by the squeezing roller. It is characterized by the fact that it is provided with a film correction mechanism that also has a correction roller force.

[0007] Further, the filling and packaging machine according to claim 2 is similar to the filling and packaging machine according to claim 1, wherein the molding squeezing mechanism and the film correcting mechanism are respectively opposed to a squeezing roller or a correcting roller. At least one of the rollers approaches or opposes the opposite roller Is provided so as to be separated from each other.

[0008] In addition, the filling and packaging machine according to claim 3 is the same as the filling and packaging machine according to claim 2, further comprising: The distance and the distance between the correction rollers of the film correction mechanism are changed (set), respectively.

[0009] Further, the filling and packaging machine according to claim 4 is the filling and packaging machine according to claim 2 or claim 3, wherein an interval between the drawing rollers of the forming drawing mechanism and a correction roller of the film correcting mechanism are provided. The filling amount of the content by the filling mechanism is changed according to the interval between them.

The invention's effect

[0010] In the filling and packaging machine according to the present invention, the thickness is narrowed across the bulging portion of the tubular film that is located between the filling mechanism and the lateral seal mechanism and that is filled with the contents. A squeezing mechanism composed of a pair of squeezing rollers, and a swelled portion of the tubular film positioned on the side of the vertical seal mechanism from the squeezing squeezing mechanism, with the squeezing amount being reduced by the squeezing roller. A film straightening mechanism comprising at least a pair of straightening rollers that press and sandwich the force is arranged, and a horizontal seal is formed along the width direction of the packaging film formed in a cylindrical shape. A pair of straightening roller forces that press and squeeze the bulging part of the tubular film across the outer surface side of the film when laterally sealing at predetermined intervals while pressing from the outer surface side of the tubular film by the mechanism By narrowing the tube film so that it is slightly flattened by the film straightening mechanism, and then narrowing the tubular film so that it is flattened further by the forming drawing mechanism, which is a pair of squeezing roller forces positioned downstream of the film straightening mechanism. The film is gradually drawn out into a flat state and fed out. In this state, as the horizontal sealing member of the horizontal sealing mechanism rotates, heat sealing is performed in synchronization with the film transfer while pressing the cylindrical film against the outer surface, so that the film itself is drawn out into a flat state. By laterally sealing in a state, it is possible to perform lateral sealing by a lateral sealing mechanism in a state without a wrinkle while preventing the film from becoming slack, and achieve the initial purpose. be able to.

Brief Description of Drawings FIG. 1 is a front view showing a vertical filling and packaging machine according to an embodiment of the present invention.

2 is a side view showing a forming drawing mechanism and a film correction mechanism that are the main parts of the filling and packaging machine of FIG. 1.

FIG. 3 is a side view showing the operation of the forming drawing mechanism and the film correction mechanism of FIG.

FIG. 4 is a plan view showing a forming drawing mechanism and a film correction mechanism according to the embodiment.

FIG. 5 is a block diagram showing an electrical configuration of a main part of the embodiment.

[Fig. 6] Fig. 6 is a diagram showing a control timing of the embodiment.

Explanation of symbols

3 Film folding mechanism

4 Vertical seal mechanism (film feed mechanism)

4B Vertical seal member

5 Lateral seal mechanism

5B Horizontal seal member

6 Filling mechanism

6A filling nozzle

7 Molding mechanism

7A squeezing roller

8 Film correction mechanism

8A Straight roller

9 Cutting mechanism

10 Opening and closing means

A Vertical filling and packaging machine

F film

FH vertical seal

FS side seal

K1 touch panel (setting method)

K2 control means M2 drive means (servo motor)

M3 drive means (servo motor)

M4 drive means (servo motor)

P Packaging bag

w Contents

BEST MODE FOR CARRYING OUT THE INVENTION

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

[0014] An example in which the filling and packaging machine of the present invention is applied to a vertical filling and packaging machine for packaging so that the content per bag becomes a large capacity will be described with reference to Figs. .

[0015] The vertical filling and packaging machine A is provided with a holding frame 1, and a film raw fabric FA in which a film F for packaging is wound in a roll shape is provided on the holding frame 1 in a detachable and replaceable manner. In addition, the vertical filling and packaging machine A uses a film guide mechanism 2, a film folding mechanism 3, and a vertical sealing mechanism (film feeding mechanism) to hermetically wrap the contents W to be packaged using film F. 4, a horizontal sealing mechanism 5, a filling mechanism 6, a forming drawing mechanism 7, a film correction mechanism 8, and a cutting mechanism 9 are provided on a machine base (not shown).

[0016] The film F also has, for example, a laminate strength of nylon and low-density polyethylene, and is drawn out by a vertical seal mechanism 4 serving as a film feed mechanism for feeding the film F out of a roll-shaped film raw fabric FA. The film F is led to the film folding mechanism 3, and the film F is folded in two along the longitudinal direction by the folding guide 3A provided in the film folding mechanism 3.

[0017] The vertical seal mechanism 4 is rotatably provided by, for example, a driving means Ml that is a servo motor force, and the film F is formed by the vertical seal roll member 4B provided along the outer periphery of a pair of opposed vertical heat seal rolls 4A. The film F is formed into a cylindrical shape by applying a vertical seal FH by heat-sealing in the vertical direction while feeding out the left and right edges of the film F folded in half. Each pair of vertical heat seal rolls 4A has an electric heater (not shown!) Built in.

[0018] The horizontal seal mechanism 5 is rotatably provided by, for example, a drive means M2 having a servo motor force, and has a pair of opposed horizontal heat seal rolls 5A. The bottom part that becomes the packaging bag P is obtained by sandwiching a film (tubular film) F in the horizontal direction and heat-sealing in the horizontal direction by the horizontal seal members 5B provided along the width direction of the outer periphery of the web seal roll 5A. That is, a process for forming the horizontal seal FS is performed. In addition, as in the case of the vertical sealing mechanism 4, an electric heater is built in each of the pair of horizontal heat sealing rolls 5A.

[0019] The filling mechanism 6 includes, for example, a liquid seasoning such as soy sauce or a content W made of soup in a film F formed in a continuous bottomed cylindrical shape by the vertical seal FH and the horizontal seal FS. A filling process is performed through a nozzle 6A provided on the upper side of the horizontal seal mechanism 5. The filling mechanism 6 includes a supply pump 6B driven by the rotation of the driving means M3 that also has a servo motor force, for example, and the contents W are discharged from the nozzle 6A by the operation of the supply pump 6B. Is done. The bag mouth of the film F containing the contents W is further fed, and is again sealed laterally by the lateral seal mechanism 5 in the lateral direction FS. Is formed.

[0020] The forming squeeze mechanism 7 is located between the filling mechanism 6 and the lateral sealing mechanism 5, and the thickness dimension is narrowed across the bulging portion of the tubular film F filled with the contents W. It is formed from a pair of squeezing rollers 7A that correct as described above.

[0021] The film straightening mechanism 8 is located on the longitudinal seal mechanism 4 side of the molding drawing mechanism 7, and the swelled portion of the tubular film F is formed on the film F in a state where the drawing amount is reduced by the drawing roller 7A. It is formed by a pair of straightening rollers 8A that are pressed and corrected from the outer surface side.

[0022] An opening / closing means 10 is provided for causing the drawing roller 7A forming a pair of the forming drawing mechanism 7 and the correction roller 8A forming a pair of the film correction mechanism 8 to approach or separate in synchronization, and this opening / closing means The narrowing of the tubular film F is set by the operation of the driving means M4 which also has the servo motor force serving as the driving source of 10.

In addition, as shown in FIG. 4, the opening / closing means 10 is rotated by a servo motor M4 that rotates in the forward and reverse directions, and has a spiral groove formed by a right-hand screw and a left-hand screw with a substantially central portion as a boundary. The transport screw 10A, the guide screw 10B having the same spiral groove as the transport screw 10A, and the spiral screw groove of the transport screw 10A or the guide screw 10B are screwed to rotate the transport screw 10A. Yotsu And a support portion (piece portion) 10C that moves in the axial direction of the conveying screw 10A and rotatably supports the pair of squeezing roller 7A and correction roller 8A.

[0024] Further, with the operation of the opening / closing means 10, the forming and drawing mechanism 7 and the film correcting mechanism 8 approach or separate (straight forward reciprocating movement) while the drawing rollers 7A and the correction rollers 8A are parallel to each other. Therefore, the forming squeezing mechanism 7 sandwiches the cylindrical film F (including the contents W) transferred by varying the distance between the squeezing rollers 7A by a predetermined width. Or open.

[0025] It should be noted that, by forming the film F using the squeezing roller 7A and the correcting roller 8A that can be rotated as the forming squeezing mechanism 7 and the film correcting mechanism 8 for forming the bulging portion of the film F, the film F is continuously contacted. Therefore, it is possible to always keep the molding state for the film F to be transferred.

[0026] The cutting mechanism 9 uses a pair of opposed cutting blades 9A and 9B to cut and cut the substantially central portion of the lateral seal portion F2 of the packaging bag P continuous body, thereby cutting the packaging bags P one by one. It is configured so that it can be separated. In this case, the pair of cutting blade bodies 9A, 9B provided in the cutting mechanism 9 is provided so that one of the cutting blade bodies 9A is fixedly held, and the other cutting blade body 9B is provided with a servo motor force. It is provided to be rotatable by the driving means M5.

[0027] In addition, a machine panel (not shown) that holds each mechanism selects a type of contents W, and a touch panel (setting means described later) of a switching screen type that sets various setting values according to the packaging form for each type. ) Is provided.

Next, the electrical configuration of the present invention will be described with reference to FIGS.

[0029] The touch panel K1 sets the production conditions such as the film F transfer speed, seal pitch, filling amount, molding drawing mechanism 7, and film correction mechanism 8 operation timing and operation speed according to the packaging type for each product type. Can be entered numerically. The touch panel K1 outputs the input set value to the control means K2.

[0030] As the control means K2, for example, a microcomputer can be applied, a ROM in which a program for processing operation is stored, a RAM for temporarily storing operation values, a CPU for executing the program, a touch panel K1 and the like. Servo motor with vertical / horizontal seal mechanism 4, 5 Ml, M2 Etc., and the input / output interface circuit to make electrical connection to the drive system of each mechanism. In this case, the control means K2 is also used as a control means for electrically controlling the entire filling and packaging machine.

[0031] The drive means Ml composed of a servo motor is provided as a drive source of the vertical seal mechanism 4. The drive means Ml composed of a servo motor rotates the vertical heat seal roll 4A based on the control signal from the control means K2. The control means K2 outputs to the drive means (servo motor) Ml a control signal that prompts the film F to be sent at a rotational speed such that the transfer speed of the film F becomes the set value input by the touch panel.

The drive means M 2, which is a servo motor force, is provided as a drive source for the lateral seal mechanism 5. The drive means M2 composed of a servo motor rotates the horizontal heat seal roll 5A based on the control signal from the control means K2. The control means K2 is determined according to the transfer speed of the film F (the transfer speed of the film F by the vertical seal mechanism 4) and the seal pitch of the film F set by the touch panel (the width of the interval between the horizontal seals FS). At a predetermined time, a pair of horizontal seal members 5B output a control signal for urging the film F to sandwich the film F and perform horizontal seal to the drive means (servo motor) M2.

The drive means M 3, which is a servo motor force, is provided as a drive source for the filling mechanism 6. The drive means M3 composed of a servo motor is used to fill the cylindrical film F with the contents W by the discharge amount by the rotation of the supply pump 6B based on the control signal from the control signal K2. In this case, the supply pump 6B is set to continuously fill while changing the discharge amount of the contents W by changing the rotation speed. As shown in FIG. 6, the control means K 2 changes the discharge speed at the same cycle as the cycle T3 of the horizontal seal start timing tl by the horizontal seal mechanism 5 and also supplies a predetermined amount of contents W for each packaging bag P. A control signal prompting filling is output to the driving means M3, which is a servo motor force that drives the supply pump 6B to rotate.

[0034] In this case, the control means K2 controls the supply pump 6B so as to discharge in a constant state where the discharge amount is low at least at the timing tl of the start of the lateral seal. Therefore, the shaking of the film F caused by the flow of the contents W discharged from the nozzle 6A can be suppressed, and the horizontal seal FS is formed in a stable state. The drive means M 4 that also serves as a servo motor force is provided as a drive source for the shaping diaphragm mechanism 7 and the film correction mechanism 8. Based on the control signal from the control means K2, the driving means M4 that also has the servo motor force operates the opening / closing means 10 to bring the squeeze rollers 7A and the correction aperture rollers 8A closer to or away from each other. As shown in FIG. 6, the control means K2 causes the squeezing roller 7A and the correction roller 8A to approach or separate so as to synchronize according to the timing of the horizontal seal start tl and the horizontal seal end t2 by the horizontal seal mechanism 5. A control signal that prompts you to output is output to the drive means (servo motor M4).

[0036] The control means K2 is a drive means (servo motor) so that the squeezing rollers 7A and the correction rollers 8A approach each other and sandwich the film F at least between the horizontal seal start tl and the horizontal seal end t2. ) Control M4. In this case, the control means K2 is a driving means (servo motor) so that the pair of squeezing rollers 7A are moved to the operating point (approach position) before the transverse seal FS by the transverse seal mechanism 5 mm (before tl). Control M4). Therefore, even if the cylindrical film F is swelled by the contents W, or the film F is squeezed due to the weight of the contents W, the film F in the vicinity of the lateral seal mechanism 5 is moved to the squeezing roller 7A. The horizontal seal FS can be performed in a stable state corrected by the straightening roller 8A. In addition, even when the film F shakes during filling, a stable state can be maintained when the lateral seal FS is performed.

[0037] In addition, before the lateral seal start tl or after the lateral seal end t2, the control means K2 gradually approaches the squeezing roller 7A and the correction roller 8A at the operation speed set in the touch panel K2. , Or control to be separated. Therefore, the impact when the squeezing roller 7A and the straightening roller 8A are brought into contact with the film F and the flow of the contents W in the film F can be moderately slowed so that the film F cannot be pinched or released suddenly. Therefore, the film F can be transported in a stable state.

[0038] The drive means M4 that also has a servo motor force brings the pair of squeezing roller 7A and correction roller 8A closer to or away from each other based on a control signal from the control means K2. As shown in FIG. 6, the control means K2 is filled by outputting to the driving means (servo motor) M4 based on a control signal that prompts the squeezing roller 7A and the correction roller 8A to approach or separate from each other. Discharge amount of contents W by mechanism 6 (discharge speed based on rotation state of supply pump 6B ) Changes and the flow rate of the contents W in the packaging bag F is set to a predetermined amount.

The drive means M5 composed of a servo motor is provided as a drive source for the cutting mechanism 9. Based on the control signal from the control means K2, the driving means M5 consisting of a servo motor is fixed on the fixed side when it reaches a predetermined position so as to cut off the substantially central part of the lateral seal FS location of the continuous packaging bag P. The other cutting blade body 9A is set to be driven to rotate at the same timing so that the other cutting blade body 9B is engaged with the other cutting blade body 9A.

[0040] In addition, in the above-described electrical configuration, the control means K2 is also used as one that performs electrical control of other mechanisms. However, in order to simplify the description, other mechanisms The explanation of the electrical configuration in is omitted.

[0041] The vertical filling and packaging machine A to be produced includes a vertical sealing mechanism 4 for transferring the cylindrical film F, a filling mechanism 6 for filling the cylindrical film F with the contents W, and a cylindrical film. A vertical filling and packaging machine A having a horizontal sealing mechanism 5 that partitions the content W by sealing F at predetermined intervals, and is located between the filling mechanism 6 and the horizontal sealing mechanism 5; Formed drawing mechanism 7 consisting of a pair of squeezing rollers 7A that correct the thickness of the tubular film F filled with the contents W so that the swelled portion is narrowed across the swelled portion, A film correction mechanism consisting of a pair of correction rollers 8A located on the seal mechanism 4 side and pressing and correcting the bulging part of the tubular film F from the outer surface side of the film F in a state where the swelled amount is controlled by the squeezing roller 7A. 8 is provided to form a cylindrically formed package. The lateral seal mechanism 5 along the width direction of the coated film F causes the outer surface side of the tubular film F to be pressed at a predetermined interval while pressing against the outer surface side of the tubular film F. At least a pair of straightening rollers 8A to be pressed and pressed to narrow down the film by a film correcting mechanism 8 having a force 8A so that the film is slightly flattened. By narrowing down the tubular film F so as to be further flat, the tubular film F is gradually drawn down into a flat state and fed out. In this state, as the horizontal seal member 5B of the horizontal seal mechanism 5 rotates, heat sealing is performed in synchronization with the transfer of the film F while pressing the cylindrical film F against the outer surface, so that the film F itself is in a flat state. The horizontal seal FS in the extended state prevents the film F from becoming slack and prevents it from becoming wrinkled. The film F can be laterally sealed by the lateral seal mechanism 5 and restrained from the outer surface side of the film F by the pair of straightening rollers 8A and the pair of squeezing rollers 7A by the film straightening mechanism 8 and the molding drawing mechanism 7. Therefore, it is possible to prevent the shaking that tends to occur in the package, and to perform a stable feeding operation of the packaging bag P.

[0042] Further, the force that increases the liquid level of the contents W in the cylindrical film F due to the sandwiching of the film F in the forming squeeze mechanism 7 and the film correction mechanism 8 At this time, the distance between the squeeze roller 7A and the correction roller 8A Can be increased to increase the amount of content W flowing downstream from the nip between the squeezing roller 7A and the straightening roller 8A, so that the liquid level reaches the nozzle 6A, and the vertical seal FH It is possible to prevent leakage from reaching above the formation position.

[0043] On the other hand, when the discharge amount of the contents W decreases, the control means K2 controls the drive means M4 that also has a servo motor force so that the squeeze rollers 7A approach each other. Therefore, even when the discharge amount of the content W is reduced, the liquid level of the content W can be raised by sandwiching the swelled portion of the film F. As a result, the liquid level of the contents W can approach or come into contact with the discharge outlet of the nozzle 6A, and bubbles can be prevented from being entrained violently.

[0044] In the above-described forming diaphragm mechanism 7 and film correction mechanism 8, the structure in which the rotation of the servo motor M is used as a drive source to cause the diaphragm roller 7A and the correction roller 8A to reciprocate and reciprocate linearly is provided with a conveying screw and a support. Although the above description has been made with reference to an example using a part (piece part), the present invention is not limited to this example, for example, using a rack and pion, a rack and worm, a crank mechanism, etc. Alternatively, a means that reciprocates (open / close operation by an opening / closing means) by a linear motor or the like can be applied as an alternative. In addition, when applied to the present invention, a ball screw having low frictional resistance and easy removal of knocklash is preferable.

[0045] Further, as shown in Fig. 6, the above-described forming squeeze mechanism 7 and the like show the force that moves the squeeze roller 7A in the direction of separating at the timing of the end of the horizontal seal t2. For example, the optimum operation timing is selected according to the mechanical configuration and the packaging form of each product type that can move the squeezing roller 7A in the direction of separating before the end of the horizontal seal t2. be able to. In the embodiment described above, the squeezing roller 7A of the forming squeezing mechanism 7 is shown to approach or separate according to the operation of the supply pump 6B. However, the present invention is not limited to this. The supply pump 6B may discharge the contents W by a certain amount, or the squeeze roller 7A may be opened and closed at a predetermined distance interval. However, it is desirable that the distance between the squeezing rollers 7A can be adjusted according to the packaging form for each product type and production conditions.

In the above-described embodiment, the squeezing roller 7A and the rectifying roller 8A between the forming squeezing mechanism 7 and the film correcting mechanism 8 have been described by taking, as an example, ones that approach or separate from each other by a certain distance. However, depending on the packaging form for each product type, it may be configured to be able to move closer or away by different distances. In the embodiment, The opening / closing operation of the forming diaphragm mechanism 7 and the film correction mechanism 8 was configured to be openable / closable by a single driving means, but the opening / closing operation of the forming diaphragm mechanism 7 and the film correction mechanism 8 can be individually opened and closed independently. Depending on the specification conditions, it may be possible to set only the 7A side of the squeeze roller of the forming squeeze mechanism 7 so that it moves closer or away. is there.

[0048] In addition, the squeezing roller 7A and the rectifying roller 8A of the forming squeezing mechanism 7 and the film correcting mechanism 8 are each constituted by a pair of force rollers, but in a tandem state, a plurality of rollers are opposed to each other. Even if they are arranged in the same manner, the same effect can be obtained.

Industrial applicability

[0049] The present invention can be applied to a vertical filling and packaging machine that performs three-side sealing or four-side sealing. In this case, one film is folded in two to form a cylindrical bag, or two films. The present invention can also be applied to a product that forms a bag in a cylindrical shape by superimposing them, or a filling and packaging machine that guides the bag production in a cylindrical shape in the vertical direction via a sailor plate.

Claims

The scope of the claims

[1] A vertical seal mechanism that vertically seals a film that is continuously transported along a longitudinal direction of the film while being sandwiched by a pair of vertical seal roll members, and a cylinder that is vertically sealed by the vertical seal mechanism A filling mechanism for filling the contents into a film-like film through a filling nozzle, and a horizontal seal member that makes a pair along the width direction of the film while feeding the cylindrical film, and sandwiched by one horizontal seal member In a filling and packaging machine comprising a transverse sealing mechanism that continuously wraps a packaging bag by laterally sealing at a predetermined interval, the contents are located between the filling mechanism and the lateral sealing mechanism. A molding diaphragm mechanism comprising a pair of squeezing rollers for correcting the thickness dimension to be narrow across the bulging portion of the cylindrical film filled with an article, and the vertical sealing mechanism side of the molding diaphragm mechanism. And a film correction mechanism having at least a pair of correction roller forces that press and correct the bulging portion of the cylindrical film from the outer surface side of the film in a state where the squeezing amount is controlled by the squeezing roller. Feature filling and packaging machine.

[2] The molding squeezing mechanism and the film correcting mechanism are provided so as to approach or separate from the opposing squeezing roller or the roller force of at least one side of the correcting roller. The filling and packaging machine according to claim 1, wherein:

[3] The distance between the squeezing rollers of the shaping squeezing mechanism and the interval between the rectifying rollers of the film correcting mechanism are respectively set according to the sealing operation of the lateral sealing mechanism. Item 3. The filling and packaging machine according to item 2.

[4] The content filling amount by the filling mechanism is changed according to the distance between the squeezing rollers of the forming squeezing mechanism and the distance between the rectifying rollers of the film correcting mechanism. The filling and packaging machine according to claim 2 or claim 3.