WO2005051767A1

WO2005051767A1 - Filling and packaging device and filling and packaging method

Info

Publication number: WO2005051767A1
Application number: PCT/JP2004/015218
Authority: WO
Inventors: Yasuhito Miyazawa; Masaki Kumagai; Toshiaki Nagasawa
Original assignee: Nippon Seiki Co.,Ltd.
Priority date: 2003-11-28
Filing date: 2004-10-15
Publication date: 2005-06-09

Abstract

A filling and packaging device, comprising a vertical seal mechanism (4) feeding a tubular film (F), a filling mechanism (6) filling contents (W) into the tubular film (F) carried by the vertical seal mechanism (4) according to the rotation of a servo-motor (M4), a molding mechanism (7) moving rollers (7A), which mold the tubular film (F) in which the contents (W) are filled by the filling mechanism (6) by holding the tubular film (F) from both sides, close to and apart from each other according to the rotating operation of the servo-motor (M3), and a lateral seal mechanism (5) providing lateral seal to the tubular film (F) in the state of being held by the molding mechanism (7).

Description

Specification

Filling packaging machine and filling packaging method

Technical field

The present invention relates to a filling and packaging machine and a filling and packaging method for forming a packaging bag by horizontally sealing a cylindrical film, and filling the contents in the packaging bag. A vertical type in which the film to be formed is formed into a tubular shape, the film is vertically and horizontally sealed to form the film, and the contents are filled in the space to form a packaging bag containing the contents. Suitable for filling and packaging machines.

Background art

[0002] In a conventional filling and packaging machine, first, a long film that is continuously transferred by a film feeding means (film feeding mechanism) such as a feeding roller is folded in two and superposed, or Lay the two pieces together. The overlapping edge is vertically sealed by a vertical heat seal roll to form a vertical seal portion, thereby forming a tubular film, and the tubular film is horizontally sealed using a horizontal heat seal roll to form a bottom portion. Form a horizontal seal. Then, after filling a predetermined amount of the contents into the upper part of the open cylinder, which is behind the horizontal seal portion force with respect to the transport direction of the film, the horizontal seal portion is horizontally sealed again at regular intervals to form a horizontal seal portion. To form an efficient closed packaging bag (packing bag continuum). Thereafter, a packaging bag is manufactured by cutting a substantially central portion of a horizontal seal portion formed on a film by a cutting means having a blade body (for example, see Patent Document 1). No. 48301

Disclosure of the invention

Problems to be solved by the invention

[0003] The above-mentioned filling and packaging machine is desired to be capable of producing packaging bags at a high speed, and the packaging operation can be speeded up by increasing the rotation speed of a film feeding means and vertical and horizontal heat seal rolls. Had to respond.

[0004] Furthermore, it is necessary to fill the contents at a high speed with these high-speed packaging operations. It was. When the contents are vigorously ejected while force is applied, bubbles are violently wound with the contents, and if the film is sealed in this state, the product will become a product depending on the amount of air mixed in There has been a problem that the amount of contents in the packaging bag varies. In addition, when a large amount of air is introduced into the packaging bag, the volume of the packaging bag itself increases accordingly, which hinders efficient packaging. Therefore, it has been desired to seal the contents in a degassed state as much as possible.

[0005] Therefore, an object of the present invention is to pay attention to the above-described problem, and it is possible to perform a high-speed packaging operation, and to stably fill contents into a cylindrical film. And to provide a filling and packaging machine and a filling and packaging method.

Means for solving the problem

[0006] The filling and packaging machine of the present invention provides a film feeding mechanism for feeding a tubular film, and a filling mechanism for filling the cylindrical film conveyed by the film feeding mechanism by rotating the filling driving means. A first forming member for forming the cylindrical film filled with the contents by the filling mechanism so as to be sandwiched between the first and second forming films in accordance with the rotation of the first forming driving means as a motor force, or It is characterized by comprising a first forming mechanism for separating, and a sealing mechanism for starting a seal with respect to the cylindrical film sandwiched by the first forming mechanism.

[0007] The first forming mechanism has a pair of the first forming members sandwiching the tubular film, and at least one of the first forming members is rotated in accordance with a rotation operation of the first forming driving unit. It is characterized in that the first molding member is movably provided so as to approach or separate from the other opposing first molding member.

[0008] Further, a setting means for setting production conditions such as a transfer speed of the tubular film and a filling amount of the contents by an input by an operator, and a production condition set by the setting means. And a control means for controlling the filling drive means and the first molding drive means.

[0009] Further, the control means is configured to cause the first molding driving means to approach or separate the molding member of the molding mechanism in accordance with a change in the discharge amount of the contents by the filling mechanism. Is controlled. [0010] Further, the control means controls the first molding drive means so that the first molding members are separated from each other when the rotation speed of the filling drive means is increased, and It is characterized in that the first molding drive means is controlled such that the first molding members approach each other when the number of rotations of the filling drive means is reduced.

[0011] Further, the control means controls the filling driving means so as to gradually increase the discharge amount of the contents when the filling mechanism starts filling.

[0012] Further, the control means may be arranged such that when the filling mechanism starts filling, the first molding member is gradually separated from the first molding member in accordance with an increase in the discharge amount of the contents. The driving means is controlled.

[0013] Further, the filling and packaging machine of the present invention provides a film feeding mechanism for transferring a tubular film, a filling mechanism for filling contents into the tubular film, and sealing the tubular film at predetermined intervals. And a sealing mechanism for partitioning the contents by dividing the bulge portion of the tubular film provided between the filling mechanism and the sealing mechanism and filled with the contents. A first molding mechanism having a pair of first molding members sandwiched therebetween, and a second molding mechanism having a pair of second molding members provided between the first molding mechanism and the sealing mechanism and sandwiching the tubular film. And a forming mechanism.

[0014] Further, the second forming mechanism may be configured such that at least one second forming member is a second forming member that is a driving source of the second forming mechanism with respect to the other opposing second forming member. It is characterized in that it is provided so as to approach or separate by the molding drive means.

[0015] In addition, a moving mechanism for moving the sealing mechanism in the vertical direction along the transport direction of the tubular film is provided, and the second forming mechanism is provided near the upper side of the sealing mechanism. In addition, it is provided so as to be vertically moved together with the seal mechanism by the moving mechanism.

[0016] Further, it is characterized by comprising control means for controlling each of the servomotors based on predetermined production conditions input by the operator via the setting means.

[0017] In the filling and packaging method of the present invention, a first process of filling contents into a transferred tubular film by a filling mechanism, and the tubular film is filled at predetermined intervals by a sealing mechanism. A second process of partitioning the contents by sealing the contents, and the cylindrical film filled with the contents by a pair of first molding members provided between the filling mechanism and the sealing mechanism. And a fourth process of sandwiching the tubular film by a pair of second molding members provided between the first molding mechanism and the sealing mechanism. It is characterized by the following.

Further, in the fourth process, a distance between the second molded members is changed according to a sealing operation by the sealing mechanism.

[0019] In the first process, a discharge amount of the content discharged from the filling mechanism is changed according to a sandwiching operation of the cylindrical film by the second forming member. In the third process, when the amount of discharge of the contents by the filling mechanism is increased, the distance between the first molding members is increased, and the amount of discharge of the contents by the filling mechanism is reduced. When the number is reduced, filling and packaging are performed while controlling so that the distance between the first molded members is reduced.

The invention's effect

[0020] The present invention relates to a filling and packaging machine for forming a packaging bag by horizontally sealing a cylindrical film and filling the contents into the packaging bag. Can be provided.

Brief Description of Drawings

FIG. 1 is a view showing a vertical filling and packaging machine according to a first embodiment of the present invention.

FIG. 2 is a view showing a forming mechanism of the embodiment.

FIG. 3 is a diagram showing an electrical configuration of a main part of the embodiment.

FIG. 4 is a diagram showing control timings of the embodiment.

FIG. 5 is a diagram showing control timings in the embodiment.

FIG. 6 is a view showing a vertical filling and packaging machine according to a second embodiment of the present invention.

FIG. 7 is a diagram showing an electrical configuration of a main part of the embodiment.

FIG. 8 is a diagram showing control timings of the embodiment.

Explanation of symbols

[0022] 4 Vertical seal mechanism (film feed mechanism) 5 Horizontal seal mechanism (seal mechanism)

5B Horizontal seal

6 Filling mechanism

7 Forming mechanism (first forming mechanism)

7A roller (first molding member)

7B Opening / closing means

F Huinorem

F1 Vertical seal

F2 horizontal seahorse

M3 servo motor (first molding drive means)

M4 servo motor (filling drive means)

P

w Contents

K1 touch panel (setting means)

K2 control means

71 Moving mechanism (vertical mechanism)

72 Second forming mechanism

72A roller (second molded part)

L1 touch panel (setting means)

L2 control means

M31 servo motor

M32 servo motor (second molding driving means)

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, a first embodiment of the present invention will be described with reference to the accompanying drawings.

[0024] An example in which the filling and packaging machine of the present invention is applied to a vertical filling and packaging machine for packaging a film so that the content per bag becomes large will be described with reference to Figs. 1 to 5. .

[0025] The vertical filling and packaging machine A is provided with a holding frame 1, and a raw film R on which a packaging film F is wound in a roll shape is provided on the holding frame 1 in a detachable manner. . Also, vertical filling The packaging machine A includes a film guide mechanism 2, a film wrapping mechanism 3, a vertical sealing mechanism (film feeding mechanism) 4, and a horizontal sealing mechanism in order to hermetically package the contents W to be packaged with the film F. (Seal mechanism) 5, filling mechanism 6, forming mechanism (first forming mechanism) 7, and cutting mechanism 8 are provided on a machine base (not shown).

[0026] The film F is made of a laminate of nylon and low-density polyethylene, and is pulled out by a vertical seal mechanism 4 serving as a film feed mechanism for feeding out the film F from a roll-shaped raw material R of the film. The film F is led out to the film folding mechanism 3 through the wrapper, and the film F is folded in two along the longitudinal direction by the folding guide 3A provided in the film folding mechanism 3.

The vertical sealing mechanism 4 is rotatably provided by a servomotor Ml, and sends out the film F by a vertical sealing body 4B provided along the outer circumference of a pair of opposed vertical heat sealing rolls 4A. The left and right edges of the folded film F are vertically sealed (heat-sealed) in the vertical direction by applying a force S to form a vertical seal portion F1 to form the film F into a cylindrical shape. Note that an electric heater (not shown) is built in both vertical heat seal rolls 4A. In addition, the vertical seal mechanism 4 is provided with a film feed mechanism dedicated to film feeding separately from the force vertical seal mechanism 4 that indicates a function also as a film feed mechanism for feeding out the film F at a desired speed. It may be something.

[0028] The horizontal seal mechanism 5 has a pair of horizontal seal rolls 5A rotatably provided by the servomotor M2, and includes a horizontal seal body 5B provided on a pair of opposing horizontal heat seal ports 5A. The film (tubular film) F is sandwiched and horizontally sealed (heat-sealed) in the horizontal direction to form a bottom portion that becomes the packaging bag P, that is, a horizontal seal portion F2. In addition, an electric heater is incorporated inside the two horizontal heat seal rolls 5A, similarly to the vertical seal mechanism 4.

[0029] The filling mechanism 6 includes a vertical sealing portion F1 and a horizontal sealing portion F2, and a liquid seasoning such as soy sauce or a content W which also has soup power is horizontally placed in a continuous bottomed tubular film F. The filling is performed via a nozzle N provided on the upper side of the seal mechanism 5. The filling mechanism 6 includes a supply pump (not shown) driven by the rotation of a servomotor (filling driving means) M4, and is not shown by the operation of the supply pump! , Ta The content W stored in the ink is discharged from the nozzle N. Note that the bag mouth portion of the film F including the contents W is further fed and horizontally sealed again by the horizontal sealing mechanism 5 to be in a sealed state, and the continuous packing bag in the up-down direction is sealed. Is formed.

[0030] The molding mechanism 7 is provided between the horizontal sealing mechanism 5 and the filling mechanism 6, and as shown in Fig. 2, both sides (Fig. 1) of the film F filled with the contents W by the filling mechanism 6. A pair of rotatable rollers (first forming member) 7A for forming into a predetermined shape so as to be sandwiched from the front and rear directions in (1) and a servo motor (first 1) for moving the rollers 7A closer to or away from each other. Opening / closing means 7B having a molding drive means M3).

[0031] The opening / closing means 7B is provided with a servomotor M3 that rotates forward and backward, and a helical groove formed by a right-hand screw and a left-hand screw that is rotated by the servomotor M3 and substantially at the center. The transfer screw 7C, the guide screw 7D having the same spiral groove as the transfer screw 7C, and the transfer screw 7C or the guide screw 7D are screwed into the spiral groove to rotate the transfer screw 7C. And a supporting portion (nut) 7E that moves in the axial direction of the transport screw 7C and rotatably supports the pair of rollers 7A.

[0032] Further, due to the operation of the opening / closing means 7B, the forming mechanism 7 approaches or separates (moves straight forward and backward) while the rollers 7A remain parallel. Therefore, the forming mechanism 7 can pinch or open the film F transferred between the rollers 7A.

[0033] The cutting mechanism 8 cuts and cuts a substantially central portion of the horizontal seal portion F2 of the continuous packaging bag by a pair of opposing cutting blades (not shown), and separates the packaging bags P into individual pieces. It is.

A machine base (not shown) provided with each mechanism is provided with a switching screen type touch panel (described later) for selecting a type of the content W and setting various set values according to a packaging form for each type. I have.

Next, an electrical configuration of a main part of the present invention will be described with reference to FIG.

[0036] Touch panel (setting means) K1 switches the operation of vertical filling and packaging machine A to operation Z stop and production conditions (transfer speed of film F, seal pitch, filling amount, forming mechanism 7 operation timing and operation speed) can be entered numerically for each item. it can. The touch panel Kl outputs the set value input by the operator to the control means K2.

As the control means K2, for example, a microcomputer can be applied, and a ROM in which a program for processing operation is stored, a RAM in which operation values are temporarily stored, a CPU for executing the program, a touch panel K1, It mainly consists of an input / output interface circuit for making an electrical connection to the drive system of each mechanism such as the servomotors Ml and M2 for the vertical and horizontal seal mechanisms 4 and 5. In this case, the control means K2 is also used as a control means for electrically controlling the entire vertical filling and packaging machine A, but may be provided separately from the control means for controlling each mechanism described above. Good.

The servo motor Ml is provided as a drive source of the vertical seal mechanism 4. The servo motor Ml rotates the vertical heat seal roll 4A based on a control signal from the control means K2. The control means K2 outputs to the servomotor Ml a control signal for prompting the transmission of the film F at a rotation speed such that the transfer speed of the film F becomes the set value inputted by the touch panel.

The servo motor M 2 is provided as a drive source of the horizontal seal mechanism 5. The servo motor M2 rotates the horizontal heat seal roll 5A based on a control signal from the control means K2. The control means K2 controls the transfer speed of the film F (the sending speed of the film F by the vertical sealing mechanism 4), the seal pitch of the film F set by the touch panel (the width of the interval between the horizontal seal portions F2), and the horizontal seal. The control signal for prompting the pair of horizontal seal members 5B to sandwich the film F and perform horizontal sealing at predetermined time intervals determined based on the seal plate mounting interval of the horizontal heat seal roll 5A of the mechanism 5 is servo-controlled. Output to motor M2.

The servo motor (first molding driving means) M 3 is provided as a driving source of the molding mechanism 7. The servo motor M3 operates the opening / closing means 7B at the rotation speed and the number of rotations based on the control signal from the control means K2 to move the rollers 7A closer to or away from each other.

The servo motor (filling driving means) M 4 is provided as a driving source of the filling mechanism 6. The servo motor M4 drives the supply pump at a rotation speed and rotation speed based on a control signal from the control means K2. The filling mechanism 6 is used to rotate the servo motor M4. The content W is discharged from the nozzle N at a discharge amount corresponding to the content W.

With the above-described configuration, the control unit K2 can operate each mechanism based on various set values and programs input in advance. Next, the operation timing of each mechanism will be described with reference to FIG.

As shown in FIG. 4, the servo motor M4 sends a control signal to the servo motor M4 that prompts the discharge amount of the contents by the filling mechanism 6 to change in accordance with the timing of starting or ending the horizontal sealing by the horizontal sealing mechanism 5. Output. Note that the timing of the horizontal seal is calculated by the control means K2 based on the rotation angle of the origin sensor and the servomotor M2, not shown in the horizontal seal mechanism 5 shown in FIG.

The control means K2 controls the servomotor M4 so as to discharge in a constant state with a low discharge amount at least during the time T1 until the horizontal seal starts and the horizontal seal ends. Therefore, the sway of the film F caused by the flow of the content W discharged from the nozzle N can be suppressed, and the horizontal seal portion F2 is formed in a stable state.

[0045] Further, the control means K2 controls the servomotor M3 so that the rollers 7A approach each other in accordance with the decrease in the discharge amount of the contents W. 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 swelling portion of the film F. Thus, the liquid level of the contents W approaches or comes into contact with the discharge port of the nozzle N, so that it is possible to prevent bubbles from being caught.

The control means K2 increases the discharge amount in the time T2 until the horizontal seal ending force and the start of the horizontal seal so that the cylindrical film F is filled with the predetermined amount of contents W in a short time. Control signal to servo motor M4.

[0047] Further, the control means K2 calculates the discharge amount of the contents W based on the rotation speed of the servomotor M4 of the filling mechanism 6, and when the discharge amount of the contents W increases, the control unit K2 determines the increase amount. Accordingly, the servo motor M3 is controlled so as to separate the rollers 7A from each other. Therefore, even if the discharge amount of the content W increases, the content W is adjusted to the extent that the filling speed is not affected by adjusting the interval between the rollers 7A through which the content W discharged from the nozzle N passes. The flow can be moderately moderate. Also, when the rollers 7A are appropriately separated from each other, the film F near the nozzle N shakes due to the filling of a large amount of the contents W. The film F can be prevented from being wrinkled or deformed due to bulging, and can be packaged in a stable state.

[0048] The processing by the control means K2 makes it possible to transfer the film F more stably than just the filling of the contents W at a high speed. Machine A. In addition, since the inclusion of air bubbles can be suppressed and the contents W are filled in a stable state, the vertical filling and packing machine A is capable of filling an accurate amount of the contents W into the packaging bag P. . Note that the interval between the rollers 7A may be calculated in accordance with a predetermined packaging form for each type and a type of the content W in addition to the discharge amount from the nozzle N! The touch panel K1 may be used to set empirical values and adjustment values.

Next, in the vertical filling and packaging machine A having the same configuration, a control process at the start of operation by the control means K2 will be described with reference to FIG.

[0050] The control means K2 switches the vertical filling and packaging machine A from the stopped state (off) to the operating state (on) by operating the operation Z stop switching button displayed on the touch panel K1. From timing t3, a control signal is issued to the servo motor M4 to promptly increase the rotation speed.

Therefore, even when the inside of the cylindrical film F is empty at the start of the filling, it is possible to prevent the bubbles generated by filling the contents W from being vigorously entangled. Also, from the timing t3 of the filling start by the filling mechanism 6, the discharge amount can be gradually increased, so that the contents W can be prevented from being discharged vigorously into the empty film F. Since no impact is applied, the film can be transported stably.

[0052] Further, after the timing t3 at which the vertical filling and packaging machine A switches from the stopped state (off) to the operating state (on), the control means K2 controls the rollers 7A together with the increase in the discharge amount by the filling mechanism 6. Outputs a control signal to the servo motor M3 prompting the user to separate the. Therefore, even when the discharge amount is small, the flow rate of the content W can be controlled by controlling the flow rate of the content W at the interval between the rollers 7A, so that the flow of the content W is moderated to reduce the entrapment of air bubbles. It can be suppressed.

[0053] Further, the control means K2 controls the discharge amount of the content W from the nozzle N and the space force between the rollers 7A. When the set desired value is satisfied (after timing t4), the filling mechanism 6 and the forming mechanism 7 are controlled based on the horizontal sealing process by the horizontal sealing mechanism 5 as shown in FIG.

[0054] In addition, in the above-mentioned electrical configuration, the control means K2 is also used for performing electrical control of other mechanisms, but for the sake of simplicity of description, other mechanisms are used. The description of the electrical configuration in is omitted.

[0055] The vertical filling and packaging machine A includes a vertical sealing mechanism 4 for feeding a cylindrical film F, and a cylindrical film F transported by the vertical sealing mechanism 4 inside the cylindrical film F according to the rotation of the servomotor M4. The filling mechanism 6 for filling the material W, and the rollers 7A for forming the cylindrical film F filled with the content W from both sides by the filling mechanism 6 approach and close according to the rotation of the servomotor M3. Or a horizontal sealing mechanism 5 for starting horizontal sealing of the cylindrical film F sandwiched by the forming mechanism 7, thereby achieving high-speed packaging operation. A vertical filling and packaging machine capable of stably filling the contents into the tubular film as well as being possible.

[0056] Therefore, during the heat sealing and before the heat sealing force cooling step, changes in gravity and tension due to the contents applied to the vertical and horizontal seal portions Fl and F2 are moderated, and stable welding is performed. Since a state (sealed state) can be obtained, good packaging can be performed.

[0057] The forming mechanism 7 has a pair of rollers 7A that sandwich the cylindrical film F, and the rollers 7A are movably provided in accordance with the rotation operation of the servo motor M3. Can be easily adjusted.

Further, the touch panel K1 for setting the production conditions such as the transfer speed of the film F and the filling amount of the contents W by the input of the operator, and the servo control based on the production conditions set by the touch panel K1. And control means K2 for controlling the motor M4 and the servomotor M3. The control means K3 moves the rollers 7A of the forming mechanism 7 closer to or away from the rollers 7A in accordance with a change in the discharge amount of the contents W by the filling mechanism 6. The servo motor M3 is controlled so that

Therefore, even if the discharge amount of the content W increases, the content W is discharged from the nozzle N. By adjusting the interval between the rollers 7A through which the content W passes, the flow of the content W can be moderately moderate so as not to affect the filling speed. In addition, since the rollers 7A are appropriately separated from each other, it is possible to prevent the film F near the nozzle N from shaking due to the filling of a large amount of the content W, and to prevent the film F from being wrinkled due to bulging and being deformed. Packaging processing can be performed in a fixed state.

[0060] Further, the control means K2 controls the servomotor M4 so as to gradually increase the discharge amount of the contents W when the filling mechanism 6 starts filling, so that the inside of the cylindrical film F becomes empty. Even so, it is possible to prevent bubbles generated by filling the contents W from being vigorously entangled. In addition, it is possible to prevent the contents W from being discharged into the empty film F vigorously, and to prevent the film F from being impacted, so that the film can be transported stably.

[0061] Further, the control means K2 controls the servomotor M3 so as to gradually separate the roller 7A in accordance with an increase in the discharge amount of the content W when the filling mechanism 6 starts filling. Therefore, since the filling can be performed while controlling the flow rate of the content W in accordance with the discharge amount, the flow of the content W can be moderated to suppress the entrapment of bubbles.

[0062] In the above-described forming mechanism 7, a roller 7A that reciprocates linearly using the rotation of the servomotor M3 as a drive source, a transfer screw 7C and a support (nut) 7E are used as an example. The present invention is not limited to this. For example, the present invention may be applied to a system using a rack and a pin, a rack and a worm, a system using a crank mechanism, and a system using a linear motor as a drive source. can do. When applied to the present invention, a ball screw having a small frictional resistance and easy to remove knock lash is suitable. Further, the pair of rollers (forming members) sandwiching the cylindrical film may be such that one of the rollers is movably provided in accordance with the rotation of the motor to change the distance between the rollers.

[0063] Further, the above-described forming mechanism 7 has been described as moving the roller 7A in the direction of approaching or leaving at a timing as shown in Figs. 4 and 5, but the present invention is not limited to this. The optimal operation timing can be selected according to the mechanical configuration that is not limited and the packaging form for each product type.

Hereinafter, another example of the above-described first embodiment will be described as a second embodiment, and A filling and packaging machine in which a tubular film can be sandwiched by two forming mechanisms (first and second forming mechanisms) provided between the sealing mechanism and the sealing mechanism will be described with reference to the accompanying drawings.

[0065] An example in which the filling and packaging machine of the present invention is applied to a vertical filling and packaging machine for packaging a film so that the content per bag becomes large will be described with reference to Figs. 6 to 8. . The same parts as those in the first embodiment are denoted by the same reference numerals, and detailed description is omitted.

[0066] In the vertical filling and packaging machine B, a film web R obtained by winding a packaging film F in a roll shape on a holding frame 1 is provided so as to be detachable and replaceable. In addition, the vertical filling and packaging machine B uses a film guide mechanism 2, a film folding mechanism 3, a vertical sealing mechanism (a film feeding mechanism) to hermetically package contents W to be packaged using the film F. ) 4, a horizontal sealing mechanism (seal mechanism) 5, a filling mechanism 6, a first forming mechanism 7, a vertical mechanism (moving mechanism) 71, a second forming mechanism 72, and a cutting mechanism 8. It is provided on a machine not shown.

The first forming mechanism 7 is provided between the horizontal sealing mechanism 5 and the filling mechanism 6, and the film F filled with the contents W by the filling mechanism 6 is applied to both sides (front-back direction) of the film F. The molding process is performed in such a manner as to be sandwiched. Note that the first forming mechanism 7 has the same configuration as that of FIG. 3 in the first embodiment, and a detailed description is omitted.

[0068] The up-and-down mechanism 71 includes a forward / reverse rotating servo motor M31, a transport screw 71A that is rotated by the servo motor M31 and has a helical groove formed therein, and a helical groove. A holding frame 71B that moves in the axial direction (up-down direction) of the transfer screw 71A by rotating the transfer screw 71A and supports the horizontal seal mechanism 5 and the first forming mechanism 7 is formed. . By the up-down mechanism 71, the horizontal sealing mechanism 5 and the first forming mechanism 7 are provided so as to be able to reciprocate up and down along the transport direction of the film F with respect to a machine not shown. The upper / lower mechanism 71 is for increasing the contact time between the film F and the horizontal seal body 5B in order to perform a more reliable horizontal seal without intermittently stopping the transfer of the film F. As the up-down mechanism 71, the same one as the up-down mechanism described in Japanese Patent Application No. 2003-296233 filed by the present applicant can be applied.

[0069] The second molding mechanism 72 is provided between the first molding mechanism 7 and the horizontal sealing mechanism 5, and has a configuration similar to that of the first molding mechanism 7, and the content W is filled by the filling mechanism 6. Filled film In this process, the film F is molded so that both sides of the film F sandwich the film F. The second forming mechanism 72 includes a pair of rotatable rollers (second forming members) 72A for forming a cylindrical film F swollen by the contents W into a predetermined shape, and the rollers 72A approach each other. Alternatively, it is mainly constituted by an opening / closing means (not shown) for separating, and a servomotor (motor) M32 serving as a drive source of the opening / closing means. In addition, by using a rotatable roller 72A as a forming member for forming the bulging portion of the film F so as to be in contact with the film F, the forming state of the film F continuously transferred is always maintained. Can be. In addition, the second forming mechanism 72 has the same configuration as the first forming mechanism 7, and thus a detailed description is omitted.

A machine (not shown) that holds each mechanism has a switching screen type touch panel (described below) for selecting a type of the content W and setting various setting values according to a packaging form for each type. ) L 1 is provided.

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

[0072] The touch panel L1 determines production conditions such as the transfer speed of the film F, the seal pitch, the filling amount, and the operation timing and operation speed of the first and second forming mechanisms 7, 72 according to the packaging form of each product type. Numerical values can be entered for each item. The touch panel L1 outputs the input set value to the control means L2.

As the control means L2, for example, a microcomputer can be applied, and a ROM in which a processing operation program is stored, a RAM in which operation values are temporarily stored, a CPU for executing the program, a touch panel L1, It mainly consists of an input / output interface circuit for making an electrical connection to the drive system of each mechanism such as the servomotors Ml and M2 for the vertical and horizontal seal mechanisms 4 and 5. In this case, the control means L2 also serves as a control means for electrically controlling the entire filling and packaging machine.

The servo motor (second molding driving means) M 32 is provided as a driving source of the second molding mechanism 72. The servomotor M32 operates the opening / closing means 7B based on the control signal from the control means L2 to move the rollers 72A closer to or away from each other. As shown in FIG. 8, the control means L2 urges the rollers 72A to approach or separate from each other in synchronization with the timing of the horizontal seal start t5 and the horizontal seal end t6 by the horizontal seal mechanism 5. Control signal to the servo motor M32.

[0075] The control means L2 controls the servomotor M32 so that the rollers 72A approach each other and sandwich the film F at least between the start of the horizontal seal t5 and the end t6 of the horizontal seal. In this case, the control means L2 controls the servo motor M32 so that the pair of rollers 72A is moved to the operating point (approaching position) before the horizontal sealing by the horizontal sealing mechanism 5 (before t5). Therefore, even if the cylindrical film F swells due to the content W or the film F is wrinkled or radiused due to the weight of the content W, the film F near the horizontal seal mechanism 5 is corrected by the roller 72A. The horizontal sealing can be performed in the stable state. In addition, even when the film F shakes during filling, a stable state can be maintained when the film F is horizontally sealed.

[0076] Further, the control means L2 controls the roller 72A to gradually approach or separate at the operation speed set in the touch panel L1 before the horizontal seal start t5 or after the horizontal seal end t6. ing. Therefore, a stable state is maintained in order to moderate the impact at the time of contact between the roller 72A and the film F and the flow of the contents W in the film F without suddenly sandwiching or releasing the film F. Can transfer the film F.

[0077] The servo motor M31 is provided as a drive source of the up-down mechanism 71. The servo motor M31 operates based on a control signal from the control means L2, and moves the horizontal sealing mechanism 5 and the second molding mechanism 72 up and down simultaneously. The downward movement of the up-down mechanism 71 is performed when the horizontal seal portion F2 is formed (between t5 and t6 shown in FIG. 8).

The servo motor (filling driving means) M 4 is provided as a driving source of the filling mechanism 6. The servo motor M4 drives the supply pump of the filling mechanism 6 at a rotation speed or rotation speed based on a control signal from the control means L2. The filling mechanism 6 discharges the contents W from the nozzle N at a discharge amount corresponding to the rotation of the servo motor M4. In this case, the servo motor M4 is set so as to continuously fill the contents W while changing the discharge speed of the contents W by changing the rotation speed. As shown in FIG. 8, the control means L2 controls the discharge speed at the same cycle as the cycle T7 of the horizontal seal start timing t5 by the horizontal seal mechanism 5. , And outputs a control signal to the servomotor M4 for prompting the user to fill a predetermined amount of the contents w for each packaging bag P.

In this case, the control means L2 controls the servomotor M4 so as to perform discharge at a constant low discharge amount at least at the timing t5 of starting the horizontal seal. Therefore, the sway of the film F caused by the flow of the content W discharged from the nozzle N can be suppressed, and the horizontal seal portion F2 can be formed in a stable state.

The servo motor (first forming driving means) M 3 is provided as a drive source of the first forming mechanism 7. The servo motor M3 moves the rollers 7A closer to or away from each other based on a control signal from the controller L2. As shown in FIG. 8, the control means L2 controls the rollers so as to be synchronized in accordance with the cycle T7 of the change in the discharge amount of the contents W (the discharge speed based on the rotation state of the servo motor M4) by the filling mechanism 6. Outputs a control signal to servo motor M3 that prompts 7A to approach or leave.

[0081] The liquid level of the contents W in the cylindrical film F is increased by the sandwiching of the film F in the first forming mechanism 7. At this time, by increasing the interval between the rollers 7A, Since the amount of the content W flowing downstream from the pinch point by 7A can be increased, the liquid level can be prevented from reaching the nozzle N and further from the position where the vertical seal portion F2 is formed and leaking. it can.

On the other hand, when the discharge amount of the content W decreases, the control means L2 controls the servo motor M3 so that the 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 bulging portion of the film F. Thus, the liquid surface of the content W can approach or contact the discharge port of the nozzle N, and it is possible to prevent the bubbles from being violently caught.

[0083] In the above-described electrical configuration, the control means L2 is also used for performing electrical control of another mechanism. However, for simplicity of description, the electrical control of the other mechanism is performed. A description of the configuration is omitted.

[0084] The vertical filling and packaging machine B comprises a vertical sealing mechanism 4 for transferring a cylindrical film F, a filling mechanism 6 for filling the cylindrical film F with contents W, a cylindrical film F F at predetermined intervals And a horizontal sealing mechanism 5 for partitioning the contents W by sealing the contents W. The filling and packaging machine is provided between the filling mechanism 6 and the horizontal sealing mechanism 5 and is filled with the contents W. A first forming mechanism 7 having a pair of first forming members 7A sandwiching the bulging portion of the film F, and a cylindrical film F provided between the first forming mechanism 7 and the horizontal sealing mechanism 5 And a second forming mechanism 72 having a pair of second forming members 72A.

[0085] Therefore, the flow path of the content W is adjusted by sandwiching the bulging portion of the film F, and the force of the content W to be discharged is dispersed by the nozzle N force to prevent the flow of the content W and entrainment of bubbles. It can be suppressed. In addition, by providing the first and second forming mechanisms 7 and 72 for suppressing the flow of the content W with the film F interposed therebetween, the flow of the content W can be suppressed in a stepwise manner. Even in the case of filling the capacity, the vertical filling and packing machine B which can stably transfer the film F and perform good packing is obtained. Further, since the air mixed into the packaging bag P can be suppressed, the swelling of the film F does not vary, and the film F can be transported stably and satisfactorily packed. In addition, it is possible to suppress extra air from being mixed into the packaging bag P, so that packaging with high packaging efficiency can be achieved.

[0086] The second forming mechanism 72 is configured such that at least one roller 72A is provided so as to approach or separate from the opposing other roller 72A by rotation of a motor. Since the distance between the rollers 72A can be varied according to the rotation of the servo motor M32, the flow of the contents W can be easily controlled. Therefore, it is possible to obtain the flow of the contents W in accordance with the filling state ゃ the sealing state, and to stably transfer the film F.

Further, an up-down mechanism 71 for moving the horizontal sealing mechanism 5 in the vertical direction along the transport direction of the cylindrical film F is provided, and the second forming mechanism 72 is located on the upper side of the horizontal sealing mechanism 5. In addition to being provided in the vicinity and being moved up and down together with the horizontal sealing mechanism 5 by the vertical mechanism 71, sufficient sealing time by the horizontal sealing mechanism 5 (contact between the film F and the horizontal sealing body 5B) is obtained. Time) can be secured, and the film F can be sandwiched by the second molding mechanism 72. Therefore, the vertical filling and packaging machine B can suppress the film F from shaking and the filled contents W from flowing, and can seal and wrap the film F in a stable state. [0088] Further, a process (first process) of filling the content W into the cylindrical film F to be transferred by the filling mechanism 6 and a cylindrical film F by the horizontal sealing mechanism 5 at predetermined intervals. A process of partitioning the contents W by sealing (second process), and a cylindrical filter filled with the contents W by a pair of rollers 7A provided between the filling mechanism 6 and the horizontal sealing mechanism 5. (A third process) for sandwiching the bulging portion of the film F and a process for sandwiching the cylindrical film F by a pair of rollers 72A provided between the first forming mechanism 7 and the horizontal sealing mechanism 5 (the fourth process). Process) to control the flow path across the bulging portion of the film F, disperse the momentum of the content W discharged from the nozzle N, and flow the content W and wind the bubbles. Crowding can be suppressed. In addition, by providing the distance (nipping width) between the pair of rollers 72A to be smaller than the distance between the pair of rollers 7A, the flow of the contents W can be suppressed in a stepwise manner. Even when filling is performed, it is possible to provide a filling and packaging method capable of performing stable transfer of the film F and performing good packaging.

[0089] Further, by changing the distance between the rollers 72A in accordance with the sealing operation by the horizontal sealing mechanism 5, at the time of the horizontal sealing, the distance between the rollers 72A is narrowed to a stable state. The contents W can be efficiently filled by extending the space between the rollers 72A.

In addition, when the discharge amount of the content W discharged from the filling mechanism 6 is changed according to the sealing operation by the horizontal sealing mechanism 5 and the discharge amount of the content W by the filling mechanism 6 is increased. When the distance between the rollers 7A is increased and the discharge amount of the contents W by the filling mechanism 6 is reduced, the filling and packaging is performed while controlling the distance between the rollers 7A to be closer, thereby discharging from the nozzle N. Film F can be sandwiched at the optimal distance between rollers 72A according to the momentum of contents W. Therefore, a stable state of the film F and the contents W according to the filling state can be obtained.

In the first and second forming mechanisms 7 and 72 described above, the structure in which the rotation of the servo motors M3 and M32 is used as a driving source to linearly reciprocate the rollers 7A and 72A is described with respect to the transfer screw and the support section. However, the present invention is not limited to this. For example, racks and pions, racks and worms, those using a crank mechanism, linear motors, etc. Can be applied instead. When applied to the present invention, a ball screw having a small frictional resistance and easy to remove knock lash is preferable. [0092] Also, as shown in Fig. 8, the second forming mechanism 72 described above moves the roller 72A away from the roller 72A at the end of the horizontal seal t6. Not limited For example, before the end of the horizontal seal t6, select the optimal operation timing according to the mechanical configuration that allows the roller 72A to move away from the roller 72A and the packaging form for each product type be able to.

[0093] In the above-described embodiment, the roller 7A of the first forming mechanism 7 approaches or separates according to the operation of the servo motor M4. However, the present invention is not limited to this. Instead, the content W may be discharged by a fixed amount by a supply pump driven by a servo motor M4, or the roller 7A may be a device that maintains a predetermined distance. However, it is desirable that the distance between the rollers 7A can be adjusted according to the packaging form for each product type and production conditions.

[0094] In the above-described embodiment, the rollers 7A and 72A of the first and second forming mechanisms 7 and 72 are described as an example in which the rollers 7A and 72A approach or separate while being parallel. Depending on each packaging form, they may be configured to approach or separate from each other in a non-parallel state.

Claims

The scope of the claims

[1] A film feeding mechanism for feeding a tubular film, a filling mechanism for filling the cylindrical film conveyed by the film feeding mechanism with contents by rotating a filling driving unit, and the contents by the filling mechanism. A first forming mechanism for moving a first forming member, which is formed so as to sandwich the cylindrical film filled with an object therebetween, in accordance with a rotating operation of a first forming driving means, which is a motor power, and a first forming mechanism; A filling and packaging machine comprising: a sealing mechanism for starting sealing of the tubular film sandwiched by the first forming mechanism.

[2] The first forming mechanism has a pair of the first forming members that sandwich the tubular film, and at least one of the first forming members is rotated in accordance with a rotation operation of the first forming driving unit. 2. The filling and packaging machine according to claim 1, wherein the forming member is provided so as to be movable toward or away from the other first forming member facing the other forming member.

[3] setting means for setting production conditions such as a transfer speed of the tubular film and a filling amount of the contents by an input of an operator,

A control unit for controlling the filling driving unit and the first molding driving unit based on the production condition set by the setting unit, wherein the control unit controls the filling driving unit and the first molding driving unit. 2. The filling and packaging machine according to 2.

[4] The control means is configured to move the molding member of the molding mechanism closer to or away from the first molding driving means in accordance with a change in the discharge amount of the contents by the filling mechanism. The filling and packaging machine according to claim 3, wherein the filling and packaging machine is controlled.

[5] The control means controls the first molding drive means so that the first molding members are separated from each other when the rotation speed of the filling drive means is increased, and The method according to claim 3 or 4, wherein the first forming driving means is controlled so that the first forming members approach each other when the rotation speed of the moving means is reduced. Filling and packaging machine as described.

6. The control device according to claim 3, wherein the control means controls the filling drive means so as to gradually increase the discharge amount of the contents when the filling mechanism starts filling. Filling and packaging machine.

[7] The control means is configured to cause the first molding driving means to gradually separate the first molding member in accordance with an increase in the discharge amount of the content at the time of starting the filling by the filling mechanism. 7. The filling and packaging machine according to claim 6, wherein the filling and packaging machine is controlled.

[8] A film feeding mechanism for transporting the tubular film, a filling mechanism for filling the tubular film with contents, and a sealing mechanism for partitioning the contents by sealing the tubular film at predetermined intervals. And a filling and packaging machine comprising:

A first molding mechanism having a pair of first molding members provided between the filling mechanism and the sealing mechanism and sandwiching a bulged portion of the cylindrical film filled with the content; and A filling and packaging machine, comprising: a second forming mechanism provided between a mechanism and the sealing mechanism and having a pair of second forming members sandwiching the tubular film.

[9] The second molding mechanism may be configured such that at least one second molding member is a second molding member that is a driving source of the second molding mechanism with respect to the other second molding member facing the second molding member. 9. The filling and packaging machine according to claim 8, wherein the filling and packaging machine is provided so as to approach or separate by a driving means.

[10] A moving mechanism for vertically moving the sealing mechanism along the transport direction of the tubular film is provided, and the second forming mechanism is provided near the upper side of the sealing mechanism. 10. The filling and packaging machine according to claim 8, wherein the filling and packaging machine is provided so as to be vertically moved together with the seal mechanism by the moving mechanism.

11. The method according to claim 8, further comprising control means for controlling each of the servomotors based on predetermined production conditions input through setting means by an input of an operator. , A filling and packaging machine according to any of the above.

[12] A first process of filling the transferred tubular film with contents by a filling mechanism, and sealing the tubular film at predetermined intervals by a sealing mechanism to partition the contents. A second process, a third process of sandwiching a bulge portion of the cylindrical film filled with the contents by a pair of first molding members provided between the filling mechanism and the sealing mechanism; Provided between the first molding mechanism and the sealing mechanism. And a fourth process of sandwiching the tubular film between a pair of second molding members.

13. The filling package according to claim 12, wherein the distance between the second molding members is changed in accordance with a sealing operation by the sealing mechanism in the fourth processing. Method.

[14] In the first process, the filling mechanism force changes a discharge amount of the content to be discharged according to a sandwiching operation of the cylindrical film by the second forming member, and In the third process, when the discharge amount of the contents by the filling mechanism is increased, the distance between the first molding members is increased, and the discharge amount of the contents by the filling mechanism is reduced. 14. The filling and packaging method according to claim 13, wherein the packaging is performed while controlling the distance between the first molding members to be close.