WO2005019038A1

WO2005019038A1 - Vertical filling-packaging device and method of making bag by the device

Info

Publication number: WO2005019038A1
Application number: PCT/JP2004/009631
Authority: WO
Inventors: Yasuhito Miyazawa; Toshiaki Nagasawa; Masaki Kumagai
Original assignee: Nippon Seiki Co.,Ltd.
Priority date: 2003-08-20
Filing date: 2004-07-07
Publication date: 2005-03-03
Also published as: US20060236659A1; JP4782373B2; JP2005096849A

Abstract

A vertical filling-packaging device for filling contents, through a filling mechanism (5), in a packaging bag (P) formed by molding a film (F) delivered from a film roll (7) in a cylindrical shape, vertically sealing the film (F) by a vertical sealing mechanism (3), and laterally sealing the film by a laterally sealing mechanism (4). The device comprises a rotating mechanism (41) for rotating a pair of heat seal rolls (41a) which form the lateral sealing mechanism (4) and a vertically moving mechanism (42) for vertically moving the heat seal rolls (41a).

Description

Specification

Vertical filling and packaging apparatus and bag making method thereof

Technical field

The present invention relates to a vertical filling and packaging apparatus for forming a packaging bag by vertically and horizontally sealing a film that is continuously transferred, and filling the contents in the packaging bag, and a method for producing the same. Background art

[0002] Conventionally, as a packaging bag for filling and hermetically sealing an object to be packaged (content) such as a liquid, powder, or a viscous substance, a film made of a synthetic resin or a plastic bag is generally used. A packaging bag is formed by vertically or horizontally sealing a packaging film made of a packaging material such as a laminate bonded with aluminum foil or the like in three or four directions. In order to obtain such a packaging bag, there has been known a vertical filling and packaging apparatus for automatically sending out a film from a rolled film material and packing the film in a three-sided or four-sided seal. In such a vertical filling and packaging apparatus, a large-capacity packaging bag may be obtained. In this filling and packaging apparatus, both edges of a folded film or a two-layer film are vertically sealed by a sealing mechanism. To obtain a cylindrical packaging film, send this packaging film out by a film feeder, and move one pack of film downward by a box motion type horizontal seal / (end seal) cut mechanism. Next, a horizontal seal portion serving as a bottom portion of the packaging film is formed, and an object to be packaged is filled in the packaging film by a filling mechanism, and the horizontal sealing / cutting mechanism is returned to the origin position again, and the packaging is performed. The opening side of the film is horizontally sealed by the horizontal sealing / cutting mechanism to obtain a packaging bag. In the cutting of the packaging film, it is possible to separate the continuous packaging bag into individual packaging bags by operating the cutter when the horizontal sealing / cutting mechanism reaches the lower end. Vertical filling and packaging apparatuses having such a box motion type horizontal seal / cut mechanism are disclosed in, for example, Patent Document 1 and Patent Document 2.

Patent Document 1: JP 10-2977619 A

Patent Document 2: JP-A-10-147304 [0003] A box motion type horizontal sealing mechanism in a powerful vertical filling and packaging apparatus includes an up-down mechanism for raising and lowering a pair of horizontal sealers, and an opening and closing mechanism for opening and closing the pair of horizontal sealers. In the case of "closed", the pair of horizontal sealers sandwich the cylindrical form and lower the vertical mechanism to form a horizontal seal portion in the cylindrical film. In this case, the film is opened and the up-down mechanism is raised to return the up-down mechanism to the operating origin.

Disclosure of the invention

Problems to be solved by the invention

[0004] In the box motion type horizontal seal mechanism, the film is intermittently fed because the opening / closing mechanism and the vertical mechanism repeat operations of "close" → "down" → "open" → "up". As a result, there is a problem that productivity cannot be improved as compared with a vertical filling and packaging apparatus which can continuously feed a film having a rotary type horizontal sealing mechanism. In the box motion type horizontal sealing mechanism, the film is sandwiched by the pair of horizontal sealers while the film is applied at a predetermined pressure between “closed” and “open” of the opening / closing mechanism. However, in order to obtain a good horizontal seal, not only a high seal pressure is required between the pair of horizontal sealers, but also a seal is required. There was a problem that if pressure management was neglected, sealing failure was likely to occur. In addition, when the above-mentioned pair of horizontal sealers heat-seal while extruding the contents by surface contact while continuously supplying the contents such as liquid, the contents may enter into the heat-sealing area. If heat sealing failure occurs, there is a problem.

Therefore, the present invention has been made in view of the above-mentioned problems, and has excellent productivity even when a large-capacity packaging bag is obtained, and suppresses occurrence of poor sealing in the horizontal seal portion. It is intended to provide a vertical filling and packaging apparatus and a bag making method thereof.

Means for solving the problem

[0006] In order to solve the above-mentioned problems, the present invention forms a film to be fed from a raw material film into a cylindrical shape, and vertically seals the film by a vertical sealing mechanism to form a film. Horizontal seal by mechanism, formed by the vertical seal and the horizontal seal A vertical filling and packaging apparatus for filling contents into a packaging bag via a filling mechanism, wherein a rotating mechanism for rotating a pair of heat sealing rolls as the horizontal sealing mechanism, and the heat sealing rolls are vertically moved. And an up-and-down mechanism for moving the object.

[0007] Further, the vertical filling and packaging apparatus according to claim 2 is different from the vertical filling and packaging apparatus according to claim 1 in that a predetermined sealing width is provided on each of the pair of heat seal rolls. The heat sealing roll starts moving downward when the film is sandwiched by the sealing plate having a seal plate, and rises when the sealing plate shifts to the non-clipping state in which the sealing plate clamps the film. The heat seal roll is operated to return to the operation origin.

[0008] Further, the vertical filling and packaging apparatus according to claim 3 is different from the vertical filling and packaging apparatus according to claim 1 in that the pair of heat seal rolls starts to descend before the pair of heat sealing rolls starts to descend. The film is nipped by a seal plate provided on the heat seal roll and having a predetermined seal width, and the heat seal roll is raised when the seal plate shifts from the nipping state in which the film is nipped to the non-nipping state. Then, the heat seal roll is returned to the operation origin.

[0009] Further, a vertical filling and packaging apparatus according to claim 4 is the vertical filling and packaging apparatus according to any one of claims 1 to 3, wherein the first filling and packaging apparatus for rotating the heat sealing roll is the first type. And a control means for electrically controlling the first and second drive means, and a control means for electrically controlling the first and second drive means. Means are: when the rotational speed of the seal plate provided on the heat seal roll is VI, and when the lowering speed of the heat seal roll by the vertical mechanism is V2, VI + V2 is the feed speed of the film. The first and second drive means are controlled so as to be substantially equal to the above.

[0010] Further, the vertical filling and packaging apparatus according to claim 5 is the vertical filling and packaging apparatus according to any one of claims 1 to 4, wherein the horizontal sealing mechanism is provided downstream of the horizontal sealing mechanism. And a cutting mechanism for cutting the continuous packaging bag formed by the cutting mechanism, wherein the cutting mechanism moves up and down in accordance with the vertical mechanism of the horizontal sealing mechanism. A lower mechanism is provided.

[0011] Further, in the vertical filling and packaging apparatus according to claim 6, in the vertical filling and packaging apparatus according to claim 5, the cutting mechanism is provided in the pair of heat seal rolls of the horizontal sealing mechanism. The continuous wrapping bag is cut when the film is held by the sealing plate.

[0012] Further, the vertical filling and packaging machine according to claim 7 holds the seal portion of the continuous packaging bag by the vertical filling and packaging machine according to claim 5 or 6. An opening / closing mechanism having a pair of film holding plates for opening and closing the film holding plate by third driving means, fourth driving means for vertically moving the vertical mechanism for the cutting mechanism, and the continuous packaging bag A fifth driving means for operating a cutting member for cutting the workpiece, wherein the control means for electrically controlling the third, fourth, and fifth driving means comprises: The fourth drive means of the vertical mechanism for the cutting mechanism is controlled so that the film holding plate moves down with the lowering of the bag, and the sealing portion of the continuous packaging bag is controlled by the pair of film holding plates. So that the third driving means is held And controlling the fifth driving means so that the sealing member is cut by the cutting member at a predetermined timing while the film holding plate is sandwiching the seal portion. The third and fourth driving means are controlled so that the pair of film holding plates open and ascend so as not to hinder the lowering operation of the continuous packaging bag having the sealed portion. .

[0013] Further, in the vertical filling and packaging machine according to claim 8, in the vertical filling and packaging machine according to claim 7, the control means includes a pair of the film pressing plates in a form of a packaging bag. The third and fourth driving means in the opening / closing mechanism and the vertical mechanism for the cutting mechanism are controlled along the direction.

[0014] Further, the vertical filling and packaging apparatus according to claim 9 is characterized in that, in the vertical filling and packaging apparatus according to claim 1, the filling mechanism continuously performs the supply operation of the contents. It is a feature.

[0015] The vertical filling and packaging apparatus according to claim 10 is the vertical filling and packaging apparatus according to any one of claims 2, 3, 4, and 6. The sea The surface is formed in a substantially arc shape.

[0016] In order to solve the above-mentioned problems, the present invention provides a method of manufacturing a vertical filling and packaging apparatus according to claim 11, wherein a film delivered from a film blank is formed into a cylindrical shape. A vertical filling and packaging apparatus that vertically seals a film with a vertical sealing mechanism, horizontally seals with a horizontal sealing mechanism, and fills a packaging bag formed by the vertical sealing and the horizontal sealing with contents through a filling mechanism. A method of manufacturing a bag, comprising: a rotation mechanism for rotating a pair of heat seal rolls as the horizontal sealing mechanism; and an up and down mechanism for moving the heat seal roll in a vertical direction. The thus-formed sheet plates are disposed on the pair of heat seal rolls, respectively, and the pair of the heat seal rolls are rotated so as to be continuously fed. A film is sandwiched by the seal plate, the seal plate is moved down together with the film to be fed, and during this descent operation, the seal plate is continuously rotated to form a horizontal seal portion in the film. It is characterized by becoming.

[0017] Further, the bag making method of the vertical filling and packaging apparatus according to claim 12 is the bag making method of the vertical filling and packaging apparatus according to claim 11, wherein the filling mechanism operates to supply the contents. Is performed continuously.

[0018] Further, the bag making method of the vertical filling and packaging apparatus according to claim 13 is the bag making method of the vertical filling and packaging apparatus according to claim 11, wherein the seal provided on the heat seal roll. When the peripheral speed of the plate is VI and the descending speed of the heat seal roll by the vertical mechanism is V2, VI + V2 is substantially equal to the feed speed V of the film. .

[0019] Further, the bag making method of the vertical filling and packaging apparatus according to claim 14 is a method according to claims 11 to

13. The bag making method for a vertical filling and packaging apparatus according to any one of claims 13 to 14, further comprising a cutting mechanism downstream of the horizontal sealing mechanism, wherein the cutting mechanism is moved up and down in accordance with the vertical movement of the horizontal sealing mechanism. It is characterized by becoming.

[0020] Further, the bag making method of the vertical filling and packaging device according to claim 15 is a bag making method of the vertical filling and packaging device according to claim 14, wherein the cutting mechanism is a pair of the horizontal sealing mechanism. The film is sandwiched by the seal plate provided on the heat seal roll. Cutting the continuous packaging bag in the case of the above.

[0021] Further, the bag making method of the vertical filling and packaging apparatus according to claim 16 is the same as the bag making method of the vertical filling and packaging machine according to claim 14 or claim 15, wherein the cutting mechanism includes It is provided with a pair of film holding plates for holding the sealing portion of the packaging bag, and a cutting member for cutting the sealing portion, and the film holding plate descends as the continuous packaging bag descends, The sealing portion of the continuous packaging bag is nipped by the pair of film holding plates, and the sealing portion is cut by the cutting member at a predetermined timing during the holding of the sealing portion by the film holding plate. The pair of film holding plates are opened and raised so as not to hinder the lowering operation of the continuous packaging bag having the seal portion cut at the same time.

[0022] Further, the bag making method of the vertical filling and packaging machine according to claim 17 is the bag making method of the vertical filling and packaging machine according to claim 16, wherein the pair of film holding plates are formed of a packaging bag. It opens and closes and moves up and down according to the form.

The invention's effect

[0023] The present invention relates to a vertical filling and packaging apparatus for forming a packaging bag by vertically and horizontally sealing a film that is continuously transferred, and filling the contents in the packaging bag, and obtains a large-capacity packaging bag. In this case, it is possible to provide a vertical filling and packaging apparatus and a bag making method thereof that are excellent in productivity and can suppress the occurrence of poor sealing in the horizontal sealing section.

Brief Description of Drawings

FIG. 1 is a view showing an entire configuration of a vertical filling and packaging apparatus according to an embodiment of the present invention.

FIG. 2 is a view showing a horizontal seal mechanism of the embodiment.

FIG. 3 is a view showing a cutting mechanism of the embodiment.

FIG. 4 is a block diagram showing an electrical configuration of the vertical filling and packaging machine of the embodiment.

FIG. 5 is a view showing operation timings of the horizontal sealing mechanism and the cutting mechanism of the embodiment.

FIG. 6 is a view showing the operation of the horizontal sealing mechanism and the cutting mechanism of the embodiment.

FIG. 7 is a view showing a horizontal sealing mechanism and a cutting mechanism of the embodiment.

FIG. 8 is a view showing another embodiment of the cutting mechanism of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION

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

FIG. 1 shows an overall schematic view of a vertical filling and packaging apparatus that performs four-side sealing. The vertical filling and packaging apparatus H includes a film supply guide mechanism 1, a film bag folding mechanism 2, and a vertical It mainly comprises a sealing mechanism 3, a horizontal sealing mechanism 4, a filling mechanism 5, and a cutting mechanism 6.

[0027] The film supply guide mechanism 1 is configured to transfer a film F from a roll-shaped film raw material 7 mounted on a holding frame provided on a side of a machine base (not shown) via a guide roll la and a top roll lb. It leads to the film bag folding mechanism 2.

[0028] The film bag folding mechanism 2 includes a folding guide 2a, and the film F is folded in two along the longitudinal direction by the folding guide 2a.

[0029] The vertical seal mechanism 3 vertically seals the opening side and the folded side of the film F folded in half by the film bag folding mechanism 2 by the vertical seal body 3b provided in the pair of vertical seal rolls 3a. To form a vertical sealing portion FH to obtain a tubular bag-making film F. The vertical seal roll 3a is driven to rotate by a driving means 3c composed of a servomotor.

[0030] As shown in Figs. 1 and 2, the horizontal seal mechanism 4 includes a rotation mechanism 41 for rotating the pair of heat seal rolls 41a, and a vertical mechanism for moving the heat seal roll 41a in the vertical direction. 42 and. The rotating mechanism 41 is provided with seal plates 41b for forming horizontal seal portions FW along a longitudinal direction at a plurality of locations on the outer periphery of the pair of heat seal rolls 41a. The scene plate 41b is heated by a heating member (not shown) provided in the heat seal roll 41a. The rotating shaft of a rotating mechanism driving means 41c composed of a servomotor is connected to one heat seal roll 41a via a gear, and the other heat seal roll 41a is connected to one heat seal roll 41a via a gear. As a result, the pair of heat seal rolls 41a rotate with the rotation of the rotating shaft of the rotating mechanism driving means 41c, and the state can be accelerated and decelerated. The rotating mechanism 41 has an air cylinder or a hydraulic cylinder for applying a predetermined pressure to the film F held by the seal plates 41b provided on the pair of heat seal rolls 41a. A pressure means 41d composed of the same is provided so that one heat seal roll 41a presses against the other heat seal roll 41a. [0031] The vertical mechanism 42 includes transport means 42a composed of transport screws for vertically moving the pair of heat seal rolls 41a, and the nut 42b moves in the vertical direction as the transport means 42a rotates. It becomes possible. The nut portion 42b is provided with a mounting portion 42c for connecting to the frame 41e of the pair of heat seal rolls 41a. As a means for transmitting the rotation to the conveying member 42a, a vertical mechanism driving means 42d composed of a servomotor is used, a first pulley 42e is mounted on a rotating shaft 42dl of the upper and lower mechanism driving means 42d, and The second pulley 42f is mounted on the rotating shaft 42al, and the belt 42g is stretched between the pulleys 42e and 42f, so that the rotation of the rotating shaft 42dl of the vertical mechanism driving means 42d can be transmitted to the conveying means 42a. It becomes possible.

[0032] The filling mechanism 5 is for filling the contents supplied by a filling pump (not shown) into the packaging bag P in which the vertical and horizontal seal portions FH and FW are formed via the filling nozzle 5a. The packaging bag P is for filling a large-capacity content exceeding, for example, 2 liters of 40 cm long by 25 cm wide.

As shown in FIGS. 1 and 3, the cutting mechanism 6 includes a film holding and cutting mechanism 61 and a vertical mechanism (vertical mechanism for the cutting mechanism) 62. The film holding and cutting mechanism 61 has a pair of substantially U-shaped film holding plates 61a, and is attached to the support plate 61b in such a manner that each of the film holding plates 61a can move in the front-rear direction to hold the film F. Installed via part 61c. As a means for controlling the drive of the film holding plate 6 la, a film holding drive means 61 d (third drive means) composed of a servomotor, which will be described in detail later, is used. The film holding and cutting mechanism 61 includes a blade (cutting member) 61e for cutting the continuous packaging bag RP into individual packaging bags P on one of the film holding plates 61a. The blade body 61 e moves from the position behind the one film holding plate 61 a to the cutting position when the continuous packing bag RP is sandwiched by the pair of film holding plates 61 a, and is in a state where the continuous packing bag RP can be cut. Is disposed on the support plate 61b. The blade 61e can be moved in the front-rear direction by pneumatic control using an electromagnetic valve and an air cylinder as a driving source.

[0034] On the other hand, the up-down mechanism 62 is provided with a transporting means 62a comprising transporting screws for vertically moving the support plate 6lb, and the nut portion 62b moves up and down with the rotation of the transporting means 62a. It becomes possible. The nut 62b is supported in accordance with the vertical movement of the nut 62b. A mounting portion 62c for moving the holding plate 61b up and down is provided. A vertical drive mechanism (a fourth drive means) 62d composed of a servomotor is used to transmit the rotation to the transport member 62a, and a first pulley 62e is mounted on a rotating shaft 62dl of the vertical drive mechanism 62d. The second pulley 62f is attached to the rotating shaft 62al of the transporting means 62a, and the belt 62g is stretched between the respective bouleys 62e and 62f to rotate the rotating shaft 62dl of the vertical mechanism driving means 62d. It can be transmitted to.

[0035] With the above components, the film F continuously drawn from the film web 7 is folded back into a tubular shape by the film bag folding mechanism 2, and the film F is folded by the vertical sealing mechanism 3. The both ends of the formed film F are vertically sealed to form a bag-making film F having a vertical sealing portion FH. Next, the bag-sealing film F is horizontally sealed by the horizontal sealing mechanism 4 to become a bottom sealing portion. FW is formed, and a predetermined amount of the content is filled into the bag making film F having the bottom portion through the filling mechanism 5, and the opening side of the bag making film F is horizontally sealed again by the horizontal sealing mechanism 4. Forming the continuous packaging bag RP by forming the horizontal sealing portion FW, and obtaining the individual packaging bag FW by cutting the formation portion of the horizontal sealing portion FW of the continuous packaging bag RP by the cutting mechanism 6. The mold filling and packaging apparatus H is configured.

Next, an electrical configuration of a main part of the present invention will be described with reference to FIG. Reference numeral 20 denotes control means mainly composed of a microphone computer, and the control means 20 temporarily stores a CPU 20a for executing a processing program described later, a ROM 20b in which the processing program is stored, an operation result, a read result, and the like. It has a RAM 20c for storing, and an input / output (I / O) interface circuit 20d for connecting an input / output unit described in detail after each mechanism of the vertical filling and packaging apparatus H, and the respective units 20a, 20b, 20c , 20d are connected by a node 20e. Further, the control means 20 has a non-volatile storage means 20f for storing various set values set by the setting means described later in a rewritable state.

[0037] The input / output interface circuit 20d includes a film transfer state detection sensor 21 that detects the rotation state of a top roller lb, which is a transfer state detection roller that rotates together with the delivery of the film F, and is formed by printing on the film F. A registration mark detection sensor 22 for detecting a register mark (hereinafter referred to as a registration mark) M shown in FIG. 6, a setting means 23 including a touch panel for setting and displaying various set values, and a horizontal seal mechanism 4 Heat seal low A rotation detection sensor 24 for detecting a rotation state (seal state) of a seal plate 41b provided on the notch 41a is connected as an input means. Each of the detection sensors 21, 22, and 24 is composed of a transmission sensor or a proximity sensor. The detection sensor 21 can detect the rotation state of the top roller lb by detecting the presence or absence of a slit provided in the top roller lb and a dedicated object to be detected. Further, the detection sensor 24 detects a seal plate 41b provided in the heat seal port 41a of the horizontal seal mechanism 4.

[0038] The input / output interface circuit 20d includes a servo motor power for rotating the heat seal roll 3a of the vertical seal mechanism 3 and a driving means 3c for rotating the heat seal roll 3a and a heat seal port 4a of the horizontal seal mechanism 4 for rotation. Drive means (first drive means) 41c comprising a servo motor of the type, vertical drive mechanism means (second drive means) comprising a servo motor for moving the horizontal seal mechanism 4 in the vertical direction 42d, and cutting A vertical mechanism driving means 62d composed of a servomotor for moving the mechanism 6 in the vertical direction, and a pair of cutting mechanisms 6 for shifting the film F from the non-clipping state to the clamping state or from the clamping state to the non-clamping state. Film holding drive means 61d composed of a servomotor for moving the film restraining plate 61a in the front-rear direction, and the blade of the cutting mechanism 6 for converting the continuous packaging bags RP into individual packaging bags P. (Les such illustrated figure) solenoid valve 61f and the respective driver as a driving source of a cylinder which moves back and forth 61e is connected to the output means through the record, Ru.

In the above-described electrical configuration, the control means 20 can also be used to electrically control other mechanisms. In such a case, the controlled device other than the above-described device is used for input / output. The force S to be connected to the interface circuit 20d, and the description of other electrical configurations will be omitted to simplify the description.

Next, a bag making method of the bag making / filling / packaging apparatus A will be described in detail with reference to FIGS. 5 to 7. As a bag making method described below, a case where the vertical seal mechanism 3 is used as a mechanism for feeding out the film F sent from the film web 7 will be described as an example. Further, in the bag making method of the present embodiment, the registration mark M is formed on the film F, and the formation position of the registration mark M is horizontally sealed and cut by the horizontal sealing mechanism 4 and the cutting mechanism 6 when cutting. It is shown.

The control means 20 receives the detection signal from the detection sensor 22 and sets the signal by the setting means 23. The driving means 3c of the vertical sealing mechanism 3 is controlled so that the film feed speed V is adjusted. The control means 22 determines whether or not the input time of the detection signal from the detection sensor 22 is input at a constant cycle based on the film feed speed V, and controls the driving means 3c based on the determination result. By doing so, it is possible to send out the film F at a constant speed.

[0042] The control means 20 sets the rotation speed of the heat seal roll 41a of the horizontal sealing mechanism 4, that is, the rotation peripheral speed VI of the seal plate 41b. The control means 20 controls the mechanical structural distance L1 between the position of the registration mark detection sensor 22 and the position where the horizontal sealing mechanism 4 performs horizontal sealing, and the dimensions of the packaging bag P (the length of the packaging bag P in the transport direction). The rotation peripheral speed VI of the sealing plate 41b of the horizontal sealing mechanism 4 is obtained from L2 and the film feed speed V, and the heat sealing is performed by the vertical mechanism 42 of the horizontal sealing mechanism 4. When the descent speed of the roll 41a is V2, the rotation peripheral speed VI is set so that the addition result (VI + V2) with the descent speed V2 is not greater than the film feed speed V or less than the film feed speed V. You. Further, the distance L1 is a parameter predetermined in terms of the mechanical structure, and the dimension L2 is a variable set by the setting means 23. The control means 20 determines whether or not the rotation peripheral speed is VI based on an input from a rotation detection sensor 24 that detects the rotation state of the heat seal roll 41a of the horizontal seal mechanism 4, The drive means 41c is adjusted for acceleration / deceleration based on this determination result.

[0043] The control means 20 drives the heat seal roll 41a of the horizontal sealing mechanism 4 so that the rotation peripheral speed VI calculated to seal the formation position of the registration mark M of the film F to be sent out by the sealing plate 41b is obtained. Control means 41c. FIG. 5 (a) shows a driving waveform S1 of the driving means 41c in the rotating mechanism 41 of the horizontal seal mechanism 4, and the time tl at which the driving waveform S1 is controlled at a constant speed is the area where the registration mark M of the film F is formed. Indicates that horizontal sealing is performed with the width of the sealing plate 41b. As shown in FIG. 6A, the horizontal sealing mechanism 4 shifts the sealing plate 41b of the horizontal sealing mechanism 4 to the sealing state A and the sealing state C at time tl. Form a horizontal seal FW on the bag-making film F.

Here, the seal plate 41b provided on the heat seal roll 41a of the horizontal see-through mechanism 4 will be described in detail. As shown in FIG. 6 (a), the seal plate 41b has a sealing surface formed in an arc shape. The sealing plate 41b is inserted into the bag making film F without stopping via the filling mechanism 5. The contents supplied to the film F can be pushed out from the horizontal seal part FW of the film F into the bag-making film F located on the upstream side (in the direction opposite to the transport direction of the film F) by the ironing action. The horizontal sealing can be performed without causing the contents to enter the section FW.

[0045] The control means 20 controls the driving means 41c of the rotating mechanism 41 of the horizontal sealing mechanism 4 based on the driving waveform S1, and controls the film (the bag making film F) by the sealing plate 41b provided on the heat sealing roll 41a. 5) F is horizontally sealed (heat-sealed), and the vertical mechanism driving means 42d of the vertical mechanism 42 of the horizontal sealing mechanism 4 is controlled as shown in FIG. 5 (b). FIG. 5B shows a driving waveform S2 of the vertical mechanism driving means 42d of the horizontal sealing mechanism 4. The control means 20 starts the lowering operation of the up-and-down mechanism 42 earlier than the sealing timing by the horizontal see-through mechanism 4 (the timing of holding the film F by the sealing plate 41b), and the sealing timing by the sealing plate 41b (FIG. 6). The upper and lower mechanism driving means 42d is controlled so that the upper and lower mechanisms 42 are brought into the constant velocity state before the reference state (see (a)), and after the horizontal sealing is completed at the constant velocity state (from the seal state C in FIG. 6 (a)). ), The up-down mechanism driving means 42d of the up-down mechanism 42 is controlled so as to start the ascent operation of the up-down mechanism 42 and return the up-down mechanism 42 to the home position. The descending speed V2 of the up-and-down mechanism 42 is set so that the addition result (VI + V2) with the rotational peripheral speed VI of the seal plate 1 is not higher than the film feed speed V or lower than the film feed speed Va. Note that the rising speed V3 of the up-and-down mechanism 42 may be a speed sufficient for timing for horizontally sealing the position where the next registration mark M is to be formed.

As described above, the control means 20 determines whether or not the rotation peripheral speed VI of the seal plate 41b provided on the heat seal roll 41a and the descending speed V2 of the heat seal roll 41a by the vertical mechanism 42 are added. The driving means 41c and 42d of the horizontal sealing mechanism 4 are controlled so that the result is substantially equal to the film feed speed V.

Next, a cutting method of the cutting mechanism 6 will be described. FIG. 6 (b) shows the movement of the cutting mechanism 6 operating in accordance with the vertical movement of the sealing mechanism 4. In the figure, the arrow D indicates the lowering / rising operation of the film holding / cutting mechanism 61. Arrow E indicates the opening / closing operation of the pair of film holding plates 61a, and arrow F indicates the front / back operation of the blade 61e of the film cutting mechanism 61. The control means 20 controls the driving means 61d of the film holding and cutting mechanism 61 of the cutting mechanism 6 in accordance with the driving waveform S1 of the driving means 41c of the rotating mechanism 41 of the horizontal sealing mechanism 4. FIG. 5C shows a drive waveform S3 for driving the drive means 61d of the film holding and cutting mechanism 61 in accordance with the drive waveform S1 of the drive means 41c. As shown in the driving waveform S3 of the driving means 61d, the control means 20 controls the pair of sealing plates 41b to hold the film F and start the horizontal sealing (sealing state A in FIG. 6A). When the film holding plate 61a is closed (arrow E in Fig. 6 (b)) to hold the film F, the seal plate 41b is separated from the film F and the horizontal seal ends (see the seal in Fig. 6 (a)). According to the state C), the film F is opened by opening the pair of film pressing plates 61a (arrow E in FIG. 6B).

The control means 20 controls the vertical mechanism driving means 62d of the vertical mechanism 62 of the cutting mechanism 6 in accordance with the driving waveform S2 of the vertical mechanism driving means 42d of the vertical mechanism 42 of the horizontal seal mechanism 4. FIG. 5D shows a drive waveform S4 for driving the vertical mechanism driving means 62d of the vertical mechanism 62 of the cutting mechanism 6 in accordance with the driving waveform S2 of the vertical mechanism driving means 42d. The control means 20 starts the lowering operation of the upper and lower mechanism 62 of the cutting mechanism 6 at the timing when the lowering operation of the upper and lower mechanism 42 of the horizontal seal mechanism 4 starts (arrow D in FIG. 6B), and holds the film. The up-down mechanism driving means 62d of the up-down mechanism 62 is controlled so as to be in a constant velocity state before the timing when the film F is sandwiched by the pair of film holding plates 61a of the cutting mechanism 61. The lowering speed V4 at this time is substantially the same as the film feed speed Va.

The control means 20 operates the blade 61e of the film holding and cutting mechanism 61 in synchronization with the operation of the film holding plate 61a. FIG. 5 (e) shows a drive waveform S5 of the solenoid valve 61f for moving the blade body 61e back and forth. The control means 20 performs the horizontal sealing of the bag-making film F indicated by the sealing state B in FIG. 6A by the horizontal sealing mechanism 4 and the pair of film holding plates 61a of the film holding / cutting mechanism 61 for the bag making film F. (See arrows E in Figs. 5 (c) and 6 (b)), and the film-making film F is held down by the horizontal sealing mechanism 4 and the continuous packaging bag RP is held down by the cutting mechanism 6 respectively. At this time, the solenoid valve 61f is actuated to advance the blade body 61e to cut the horizontal seal portion FW of the film F (arrow F in FIG. 6B), and then retract the blade body 61e. This controls the solenoid valve (fifth drive means) 61f (arrow F in FIG. 6B). As is clear from the drive waveform S5, the control means 20 aims at substantially the center of the horizontal seal portion FW formed by the seal plate 41b of the horizontal seal mechanism 4, and advances the blade body 61e to move the finolem F. Disconnect. After cutting the continuous packaging bag RP by the film holding and cutting mechanism 61, the control means 20 starts the raising operation of the vertical mechanism 62 and returns the vertical mechanism 62 to the home position (arrow D in FIG. 6 (b)). The rising speed V5 at that time may be a speed that is sufficient to hold the next horizontal seal formation position at the origin position between the pair of film holding plates 61a.

The control means 20 includes a mechanical structural distance L 3 between the position of the registration mark detection sensor 22 and the position where the cutting mechanism 6 cuts, the dimension L 2 of the packaging bag P, and the film feed speed V The cutting timing is determined based on a. The distance L3 is a parameter predetermined mechanically.

The vertical filling and packaging apparatus H can obtain a large-capacity packaging bag P without stopping the transfer of the film F by performing the above-described processing.

Next, another embodiment of the cutting mechanism 6 will be described with reference to FIG. 8, but the same or corresponding parts as those in the above-described embodiment will be denoted by the same reference numerals, and detailed description thereof will be omitted. FIG. 8 is a diagram showing the operation of the film holding and cutting mechanism 61 and the vertical mechanism 62 in the cutting mechanism 6, and it is assumed that the position of the cutting mechanism 6 shown in FIG. The control means 20 controls the vertical mechanism driving means 62d of the upper / lower mechanism 62 so that the pair of film holding plates 61a move downward with the lowering of the continuous packaging bag RP, and the pair of film holding plates 61a. The film holding drive means 61d is controlled so as to hold the horizontal seal portion FW (seal portion) of the continuous packaging bag RP (FIG. 8 (a)), and the film seal plate 61a is holding the horizontal seal portion FW. At a predetermined timing, the solenoid valve 6 If is controlled (turned on) so that the blade 61b cuts substantially the center of the horizontal seal portion FW (FIG. 8 (b)). Continuous packing bag having FW The pair of film holding plates 61a are operated in the opening direction (hereinafter, referred to as opening operation) so as not to hinder the lowering operation of the RP, and the film holding driving means 61d is operated so as to ascend. And the vertical mechanism driving means 62d (FIG. 8 (c) (D)). After that, the control means 20 controls the film holding and cutting mechanism 61 and the vertical The film holding drive means 61d and the vertical mechanism drive means 62d are controlled to return to the original position (FIG. 8 (e)). When the transport speed of the film F (the descending speed of the continuous packaging bag RP) is high, the film holding plate 61d may be raised after the opening operation of the pair of film holding plates 61d is completed or during the opening operation.

[0054] In the opening operation and the raising operation of the film holding plate 61a, the control means 20 performs the opening operation and the raising operation so as to conform to the form of the continuous packaging bag RP having the horizontal seal portion FW to be cut next. As a result, the film holding plate 61a can be operated in a state conforming to the shape of the continuous packaging bag RP without contacting the continuous packaging bag RP, so that the operating point is reached from the origin position of the cutting mechanism 6, and thereafter, The cycle time for returning to the home position can be shortened, and the productivity of the vertical filling and packaging machine H for obtaining a large-capacity packaging bag P can be improved.

[0055] The vertical filling and packaging apparatus H and the bag making method include a rotation mechanism 41 for rotating a pair of heat seal rolls 41a, which are horizontal sealing mechanisms 4, and a pair of heat seal holes 41a. And a pair of heat seal rolls 41a, each of which is provided with an up-and-down mechanism 42 for moving the heat seal rolls 41a. The film F which is continuously fed by being rotated is held by the sealing plate 41b, and the sealing plate 41b is moved down together with the film F which is sent out. During the lowering operation, the sealing plate 41b is continuously rotated. The horizontal sealing part FW is formed on the bag making film F by performing the rolling operation, and compared to the conventional vertical filling and packaging device with a box motion type horizontal sealing mechanism. Since a large-capacity packaging bag P can be obtained while continuously feeding the film F without stopping the transfer of the film F, a vertical filling and packaging device for obtaining a large-capacity packaging bag with excellent productivity is required. Obtainable. In addition, the rotation mechanism 41 of the horizontal seal mechanism 4 can be used, and the horizontal seal portion FW can be formed by a sealing process involving an ironing action on the seal plate 41b, thereby suppressing the occurrence of poor sealing of the horizontal seal portion FW. can do.

[0056] Further, a driving means 41c for rotating and driving the heat seal roll 41a of the horizontal sealing mechanism 4 and a vertical mechanism driving means 42d for rotating and driving a conveying screw provided in the vertical mechanism 42 of the horizontal sealing mechanism 4 are provided. The control means 20 sets the rotational peripheral speed of the seal plate 41b provided on the heat seal roll 4 la of the vertical seal mechanism 4 to VI, and sets the vertical When the lowering speed of the heat seal roll 41b is set to V2, by setting VI + V2 to be substantially equal to the feed speed V of the film, when the film F continuously fed is horizontally sealed. This does not cause problems such as generation of a shear, distortion of a packaging form caused by pulling of the film F, and variation of a cutting position due to a cutting mechanism 6 disposed at a subsequent stage.

Further, a cutting mechanism 6 is provided downstream of the horizontal seal mechanism 4, and the cutting mechanism 6 includes a vertical mechanism 62 that moves up and down in accordance with the vertical mechanism 42 of the horizontal seal mechanism 4. Is controlled to cut the continuous packaging bag RP when the film F is sandwiched by the sealing plate 41b provided on the heat sealing roll 41a of the heat sealing roll 41a, and when cutting the large-capacity continuous packaging bag RP. In addition, since pulsation at the time of cutting can be suppressed, it is possible to obtain good cutting.

[0058] Further, by forming the sealing surface of the sealing plate 41b provided in the horizontal sealing mechanism 4 in an arc shape, the contents may be present at the position where the horizontal sealing portion is formed when the horizontal sealing portion FW is formed. However, the contents can be pushed out to the bag-making film F positioned below by the squeezing action of the pair of sealing plates 41b, and the contents can be formed without causing the contents to be embedded in the horizontal seal portion FW. Good FW can be obtained.

Further, since the operation of supplying the contents by the filling mechanism 5 can be performed continuously, the intermittent filling work of the filling pump for supplying the contents is not required, so that the large-capacity packaging is performed. It is possible to further improve the productivity of the vertical filling and packaging device for obtaining bags

[0060] Further, in the opening operation and the raising operation of the film holding plate 61a, the cutting mechanism 6 performs the opening operation and the raising operation so as to conform to the form of the continuous packaging bag RP having the horizontal seal portion FW to be cut next. By operating, the film holding plate 61a can be operated in a state conforming to the shape of the continuous packaging bag RP without contacting the continuous packaging bag RP, so that the cycle time of the cutting mechanism 6 can be shortened. As a result, the productivity of the vertical filling and packaging machine H for obtaining a large-capacity packaging bag P can be improved.

In the embodiment of the present invention, the vertical mechanisms 42 and 62 of the horizontal seal mechanism 4 and the cutting mechanism 5 are configured to be driven separately. However, in the present invention, the vertical Link with movement Alternatively, a cam mechanism that operates in the same manner may be used.

[0062] Further, in the embodiment of the present invention, the film F is sandwiched by the sealing plates 41b having a predetermined sealing width provided on the pair of heat sealing rolls 41a from the start of the lowering of the pair of heat sealing rolls 41a. When the plate 41b shifts from the clamping state in which the film F is clamped to the non-clamping state, the heat sealing roll 41a is raised and the heat sealing roll 41a is returned to the operation origin. Is the force at the time when the film F is clamped by the sealing plate 41b provided in each of the pair of heat sealing holes 41a.The lowering operation of the heat sealing roll 41a is started, and the clamping plate 41b clamps the film F. When the state is shifted from the state to the non-clipping state, the heat seal roll 41a is raised to return the heat seal roll 41a to the operation origin. Good

Also, in the embodiment of the present invention, a film F on which a registration mark M is formed is used, and a lateral seal portion FW is formed at a position where the registration mark M is formed. The present invention is applicable even when a film F on which M is not formed is used. In the control method of the horizontal sealing mechanism 4 in this case, the sealing is performed based on the film feeding speed V, the dimension L2 of the packaging bag, and the interval between the sealing plates 41b provided on the heat sealing roll 41b. The rotation peripheral speed VI of the plate 41b is determined, and the rotation of the heat seal roll 41a is controlled based on the detection signal from the rotation detection sensor 24 that detects the rotation state of the seal plate 41b of the horizontal sealing mechanism 4. . In the control method of the cutting mechanism 6, the film feed speed V, the dimension L2 of the packaging bag, and the mechanical structural distance from the position where the horizontal sealing mechanism 4 performs the horizontal sealing to the position where the cutting mechanism 6 performs the cutting are used. The cutting timing of the cutting mechanism 6 is determined based on the above, and based on the detection signal from the rotation detection sensor 24 that detects the rotation state of the seal plate 41b of the horizontal sealing mechanism 4, the film holding cutting mechanism in the cutting mechanism 6 is used. It controls 61. In addition, in the control method of the vertical mechanism 62 of the cutting mechanism 6, the control is synchronized with the vertical mechanism 42 of the horizontal seal mechanism 4.

Industrial applicability

[0064] The present invention is applicable to a vertical filling and packaging apparatus that performs three-sided or four-sided sealing. In addition, a single film is folded into two to form a cylindrical bag, and two films are stacked. The present invention can be applied to a device that forms a bag by joining together, or a vertical filling and packaging device that guides a bag into a tube via a sailor plate.

Claims

The scope of the claims

[1] A film delivered from a raw film is formed into a cylindrical shape, and the film is vertically sealed by a vertical sealing mechanism, horizontally sealed by a horizontal sealing mechanism, and a package formed by the vertical sealing and the horizontal sealing is used. A vertical filling and packaging apparatus for filling contents into a bag via a filling mechanism, wherein a rotating mechanism for rotating a pair of heat sealing rolls, which is the horizontal sealing mechanism, and the heat sealing rolls are vertically moved. A vertical filling and packaging apparatus, comprising: an up-down mechanism for moving.

[2] The descent operation of the heat seal roll is started from the time when the film is sandwiched by the seal plates provided on the pair of heat seal rolls and having a predetermined seal width, and the seal plate sandwiches the film. 2. The vertical filling and packaging apparatus according to claim 1, wherein the heat sealing roll is raised to return to an operation origin when the state is shifted from the holding state to the non-holding state.

[3] After the pair of heat seal rolls starts to descend, the film is sandwiched by seal plates provided on the pair of heat seal rolls and having a predetermined seal width, and the seal plate sandwiches the film. 2. The vertical filling and packaging apparatus according to claim 1, wherein the heat sealing roll is raised to return to an operating point at the time of transition from the holding state to the non-holding state.

[4] A first drive unit for rotating and driving the heat seal roll, a second drive unit for rotating and driving a transport screw provided in the vertical mechanism, and the first and second drive units. Control means for electrically controlling, wherein the control means sets the rotational peripheral speed of the seal plate provided on the heat seal roll to VI, and the descent speed of the heat seal roll by the vertical mechanism to V2. Wherein the first and second driving means are controlled such that VI + V2 becomes substantially equal to the film feed speed V in the above case. The vertical filling and packaging apparatus according to any one of the claims.

[5] A cutting mechanism for cutting the continuous packaging bag formed by the horizontal sealing mechanism is provided downstream of the horizontal sealing mechanism, and the cutting mechanism is vertically moved in accordance with the upper and lower mechanisms of the horizontal sealing mechanism. 5. The vertical filling and packaging apparatus according to claim 1, further comprising a vertically moving mechanism for a cutting mechanism that moves.

[6] The cutting mechanism is characterized by cutting the continuous packaging bag when the film is sandwiched by the seal plates provided on the pair of heat seal rolls of the horizontal sealing mechanism. The vertical filling and packaging apparatus according to claim 5.

[7] An opening / closing mechanism including a pair of film holding plates for holding the sealing portion of the continuous packaging bag to open and close the finolem holding plate by a third driving means, and an up / down mechanism for the cutting mechanism to move up and down. And a fourth driving means for operating a cutting member for cutting the continuous packaging bag, wherein the third, fourth, and fifth driving means are provided. The control means for controlling electrically controls the fourth driving means of the vertical mechanism for the cutting mechanism so that the film holding plate is lowered with the lowering of the continuous packaging bag, and the pair of the The third driving means is controlled so that the sealing portion of the continuous packaging bag is held by the film holding plate, and the sealing portion is cut off at a predetermined timing while the sealing portion is being held by the film holding plate. The fifth driving means is controlled so as to be cut by the member, and thereafter, the pair of film holding plates are opened so as not to hinder the lowering operation of the continuous packaging bag having the seal portion to be cut next. 7. The vertical filling and packaging machine according to claim 5, wherein the third and fourth driving means are controlled so as to perform an ascending operation.

[8] The control means controls the third and fourth drive means in the opening / closing mechanism and the vertical mechanism for the cutting mechanism such that the pair of film holding plates conforms to the form of the packaging bag. 8. The vertical filling and packaging machine according to claim 7, wherein:

[9] The vertical filling and packaging apparatus according to claim 1, wherein the filling mechanism continuously performs the supply operation of the contents.

10. The vertical filling and packaging apparatus according to claim 2, wherein the sealing plate has a sealing surface formed in a substantially arc shape. .

[11] The film delivered from the film source is formed into a cylindrical shape, and this film is vertically sealed by a vertical sealing mechanism, horizontally sealed by a horizontal sealing mechanism, and a package formed by the vertical sealing and the horizontal sealing. A bag making method for a vertical filling and packaging apparatus for filling contents into a bag via a filling mechanism, comprising: a rotating mechanism for rotating a pair of heat sealing rolls as the horizontal sealing mechanism; To move the roll up and down A sealing plate formed so as to obtain a predetermined sealing width is provided on each of the pair of heat seal rolls, and the pair of heat seal rolls is rotated to operate continuously. The film to be delivered is sandwiched by the sealing plate, the sealing plate is moved down together with the film to be delivered, and the sealing plate is continuously rotated during the lowering operation to traverse the film. A bag making method for a vertical filling and packaging apparatus, characterized by forming a seal portion.

12. The bag making method of the vertical filling and packaging apparatus according to claim 11, wherein the filling mechanism continuously performs the supply operation of the contents.

[13] When the rotational peripheral speed of the seal plate provided on the heat seal roll is VI and the descent speed of the heat seal roll by the up / down mechanism is V2, VI + V2 is the film feed speed. 12. The bag making method for a vertical filling and packaging apparatus according to claim 11, wherein the method is substantially equal to V.

14. The cutting mechanism according to claim 11, wherein a cutting mechanism is provided downstream of the horizontal sealing mechanism, and the cutting mechanism moves up and down in accordance with the vertical movement of the horizontal sealing mechanism. The bag making method of the vertical filling and packaging apparatus according to any one of the above.

15. The cutting mechanism cuts the continuous packaging bag when the film is held between the seal plates provided on the pair of heat seal rolls of the horizontal sealing mechanism. 15. The bag making method of the vertical filling and packaging apparatus according to 14.

[16] The cutting mechanism includes a pair of film pressing plates for holding the sealed portion of the continuous packaging bag, and a cutting member for cutting the sealed portion, and the film is lowered as the continuous packaging bag is lowered. As the holding plate moves down, the sealing portion of the continuous packaging bag is held by the pair of film holding plates, and the sealing portion is held at a predetermined timing while the sealing portion is held by the film holding plate. Then, the pair of film holding plates are opened and raised so as not to hinder the lowering operation of the continuous packaging bag having the seal portion to be cut next. The bag making and packaging of the vertical filling and packaging machine according to claim 14 or claim 15.

17. The bag making method of the vertical filling and packaging machine according to claim 16, wherein the pair of film press plates perform opening operation and rising operation so as to conform to the form of the packaging bag. .