JP2005096849A - Vertical type filling/packaging device and its bag manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vertical type filling/packaging device restricting occurrence of poor seal at a lateral seal part and further manufacturing a large capacity packaging bag under a superior productivity, and also to provide its bag manufacturing method. <P>SOLUTION: This invention relates to a vertical type filling/packaging device in which a film F fed out of a film rolled web 7 is formed into a cylinder shape, the film F is sealed in its vertical direction by a vertical seal mechanism 3 and also sealed in its lateral direction by a lateral seal mechanism 4, and some items are filled through a filling mechanism 5 into a packaging bag P formed by the vertical seal and the lateral seal. This vertical type filling/packaging device comprises a turning mechanism 41 for use in turning a pair of heat seal rolls 41a acting as the lateral seal mechanism 4, and a moving-up or -down mechanism 42 for moving up or down the heat seal rolls 41a. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a vertical filling and packaging apparatus for forming a packaging bag by vertically and laterally sealing a continuously transported film, and filling the packaging bag with contents, and a bag making method thereof.

Conventionally, as a packaging bag for filling and sealing a package (content) such as liquid, powder, or viscous substance, a synthetic resin film or an aluminum foil or the like is generally used. A packaging bag is formed by three-side sealing or four-side sealing of a packaging film made of a packaging material such as a laminate joined together. In order to obtain such a packaging bag, a vertical filling and packaging apparatus is known in which a film is automatically fed out from a film roll wound in a roll shape and packaged by three-side sealing or four-side sealing. 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 double-layered film are separated by a vertical sealing mechanism. A cylindrical packaging film is obtained by vertical sealing, the packaging film is fed by a film feeding device, and the box motion type lateral seal / (end seal) cut mechanism moves the pack for one pack while moving downward. A lateral seal portion is formed as a bottom portion of the packaging film, and the packaging film is filled with an article to be packaged by a filling mechanism, and the lateral sealing / cutting mechanism is returned to the origin position again so that the opening side of the packaging film is A packaging bag is obtained by lateral sealing by the lateral sealing / cutting mechanism. In the cutting of the packaging film, the continuous packaging bag can be separated into individual packaging bags by operating the cutter when the horizontal sealing / cutting mechanism reaches the descending end. Examples of such a vertical filling and packaging apparatus provided with a box motion type horizontal seal / cut mechanism are disclosed in Patent Document 1, Patent Document 2, and the like.
JP 10-297619 A JP-A-10-147304

  A box motion type horizontal sealing mechanism in such a vertical filling and packaging apparatus includes an up-and-down mechanism that moves up and down a pair of horizontal sealers and an opening and closing mechanism that opens and closes the pair of horizontal sealers. In this case, the cylindrical form is sandwiched by the pair of horizontal sealers and the vertical mechanism is lowered to form a horizontal seal portion in the cylindrical film.When the opening / closing mechanism is `` open '', The film is opened and the vertical mechanism is raised to return the vertical mechanism to the operating origin.

  By the way, in the box motion type horizontal sealing mechanism, the opening / closing mechanism and the vertical mechanism repeat the operations of “closed” → “down” → “open” → “up”, so that the film is sent intermittently. However, there is a problem that productivity cannot be improved as compared with a vertical filling and packaging apparatus that can continuously feed a film having a rotary type horizontal sealing mechanism. Further, the box motion type horizontal seal mechanism obtains a horizontal seal by sandwiching the film with a predetermined pressure between “closed” and “open” of the opening / closing mechanism by the pair of horizontal sealers. However, since the pair of lateral sealers are in surface contact, in order to obtain a good lateral seal, not only a high seal pressure is required between the pair of lateral sealers, but also the seal pressure must be controlled. If neglected, there was a problem that seal failure was likely to occur. In addition, when the pair of horizontal sealers extrude the contents by surface contact while continuously supplying the contents such as liquid, the contents may be bitten into the heat seal location, There was a problem that heat seal failure occurred.

  Therefore, the present invention has been made paying attention to the above-described problems, and is excellent in productivity even when a large-capacity packaging bag is obtained, and can suppress the occurrence of poor sealing at the lateral seal portion. A vertical filling and packaging apparatus and a bag making method thereof are provided.

  In order to solve the above-mentioned problems, the present invention forms a film fed from a film raw material into a cylindrical shape as described in claim 1, vertically seals this film with a vertical seal mechanism, and horizontally with a horizontal seal mechanism. A vertical filling and packaging device that seals and fills a packaging bag formed by the vertical seal and the horizontal seal via a filling mechanism, and rotates a pair of heat seal rolls that are the horizontal sealing mechanism And a vertical mechanism for moving the heat seal roll in the vertical direction.

  The vertical filling and packaging apparatus according to claim 2 is the vertical filling and packaging apparatus according to claim 1, wherein the film is formed by a seal plate provided on each of the pair of heat seal rolls and having a predetermined seal width. The lowering operation of the heat seal roll is started from the time when the film is sandwiched, and the heat seal roll is operated by raising the heat seal roll when the seal plate shifts from the sandwiched state where the film is sandwiched to the non-clamped state. It is characterized by returning to the origin.

  Further, the vertical filling and packaging apparatus according to claim 3 is the vertical filling and packaging apparatus according to claim 1, wherein the vertical filling and packaging apparatus is provided on each of the pair of heat seal rolls after the pair of heat seal rolls starts to descend. The film is sandwiched by a seal plate having a seal width of, and when the seal plate shifts from a sandwiched state in which the film is sandwiched to a non-clamped state, the heat seal roll is moved upward to operate the heat seal roll It is characterized by returning to.

  A vertical filling and packaging apparatus according to a fourth aspect of the present invention is the vertical filling and packaging apparatus according to any one of the first to third aspects, wherein the first drive means is configured to rotationally drive the heat seal roll. And a second driving means for rotationally driving a conveying screw provided in the vertical mechanism, and a control means for electrically controlling the first and second driving means, When the rotational peripheral speed of the seal plate provided on the heat seal roll is V1, and the lowering speed of the heat seal roll by the vertical mechanism is V2, the V1 + V2 is substantially equal to the film feed speed V. The first and second driving means are controlled.

  A vertical filling and packaging apparatus according to a fifth aspect is the vertical filling and packaging apparatus according to any one of the first to fourth aspects, wherein the horizontal sealing mechanism is formed downstream of the horizontal sealing mechanism. And a cutting mechanism for cutting the continuous packaging bag, wherein the cutting mechanism includes a vertical mechanism for a cutting mechanism that moves up and down in accordance with the vertical mechanism of the horizontal seal mechanism. .

  The vertical filling and packaging apparatus according to claim 6 is the vertical filling and packaging apparatus according to claim 5, wherein the cutting mechanism is provided on the pair of heat seal rolls of the horizontal sealing mechanism. The continuous packaging bag is cut when the film is sandwiched between the two.

  A vertical filling and packaging machine according to claim 7 is the vertical filling and packaging machine according to claim 5 or 6, further comprising a pair of film holding plates that sandwich the seal portion of the continuous packaging bag. An opening / closing mechanism for opening / closing the film holding plate by a third driving means; a fourth driving means for vertically moving the cutting mechanism vertical mechanism; and a cutting member for cutting the continuous packaging bag. And a control means for electrically controlling the third, fourth, and fifth drive means is provided with the film holding plate as the continuous packaging bag is lowered. The fourth drive means of the vertical mechanism for the cutting mechanism is controlled so as to move downward, and the third drive means is configured to sandwich the seal portion of the continuous packaging bag by a pair of the film pressing plates. Control The fifth drive means is controlled so as to cut the seal portion with the cutting member at a predetermined timing while the seal portion is held by the film holding plate, and then the seal portion to be cut next is determined. The third and fourth driving means are controlled so that the pair of film holding plates are opened and raised so as not to hinder the downward movement of the continuous packaging bag.

  The vertical filling and packaging machine according to claim 8 is the vertical filling and packaging machine according to claim 7, wherein the control means is configured to open and close the pair of film holding plates so that the pair of film holding plates conform to a form of a packaging bag. The third and fourth driving means in the mechanism and the cutting mechanism vertical mechanism are controlled.

  Further, the vertical filling and packaging apparatus according to claim 9 is the vertical filling and packaging apparatus according to claim 1, wherein the filling mechanism continuously performs the supply operation of the contents. It is.

  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, wherein the seal plate is a sealing surface. Is formed in a substantially arc shape.

  Further, in order to solve the above-mentioned problems, the present invention provides a bag making method for a vertical filling and packaging apparatus according to claim 11, wherein a film fed from a film original is formed into a cylindrical shape, and the film is vertically sealed. This is a bag making method for a vertical filling and packaging apparatus in which a vertical sealing is performed by a mechanism, a horizontal sealing is performed by a horizontal sealing mechanism, and contents are filled into the packaging bag formed by the vertical sealing and the horizontal sealing via a filling mechanism. A rotation mechanism for rotating the pair of heat seal rolls as the horizontal seal mechanism and a vertical mechanism for moving the heat seal roll in the vertical direction, and formed so as to obtain a predetermined seal width The film that is continuously sent out by rotating the pair of the heat seal rolls by disposing the seal plates to be disposed on the pair of heat seal rolls, respectively. The seal plate is sandwiched, and the seal plate is moved downward together with the film to be fed, and the seal plate is continuously rotated during the lowering operation to form a lateral seal portion on the film. It is a feature.

  The bag making method for the vertical filling and packaging apparatus according to claim 12 is the bag making method for the vertical filling and packaging apparatus according to claim 11, wherein the filling mechanism continuously feeds the contents. It is characterized by being performed.

  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 rotational peripheral speed of the seal plate provided on the heat seal roll is used. Is V1, and the lowering speed of the heat seal roll by the vertical mechanism is V2, V1 + V2 is substantially equal to the film feed speed V.

  Further, the bag making method for the vertical filling and packaging apparatus according to claim 14 is the bag making method for the vertical filling and packaging apparatus according to any one of claims 11 to 13, wherein the downstream side of the horizontal seal mechanism. Is provided with a cutting mechanism, and the cutting mechanism is moved 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 claim 15 is the bag making method of the vertical filling and packaging apparatus according to claim 14, wherein the cutting mechanism is a pair of the heats of the horizontal sealing mechanism. The continuous packaging bag is cut when the film is held by the seal plate provided in a seal roll.

  Moreover, the bag making method of the vertical filling and packaging apparatus according to claim 16 is the bag making method of the vertical filling and packaging machine according to claim 14 or 15, wherein the cutting mechanism has a seal for the continuous packaging bag. A pair of film holding plates for holding the portion and a cutting member for cutting the seal portion, and the film holding plate descends as the continuous packaging bag is lowered, and the pair of film holding plates A seal that sandwiches the seal portion of the continuous packaging bag with a plate, cuts the seal portion with the cutting member at a predetermined timing during clamping of the seal portion by the film holding plate, and then cuts next The pair of film holding plates are opened and raised so as not to hinder the downward movement of the continuous packaging bag having the portion.

  Moreover, the bag making method of the vertical filling and packaging apparatus 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 pressing plates are in the form of a packaging bag. Thus, the opening / closing operation and the up / down operation are performed.

  The present invention relates to a vertical filling and packaging apparatus for forming a packaging bag by vertically and laterally sealing a continuously transported film, and filling the contents into the packaging bag, in the case of obtaining a large-capacity packaging bag. However, it is possible to provide a vertical filling and packaging apparatus and a bag manufacturing method thereof that are excellent in productivity and can suppress the occurrence of defective sealing at the horizontal seal portion.

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

  FIG. 1 shows an overall schematic diagram of a vertical filling and packaging apparatus that performs four-way sealing. The vertical filling and packaging apparatus H includes a film supply guide mechanism 1, a film bag folding mechanism 2, a vertical sealing mechanism 3, and the like. The horizontal seal mechanism 4, the filling mechanism 5, and the cutting mechanism 6 are mainly configured.

  The film supply guide mechanism 1 turns a film F from a roll-shaped film original fabric 7 mounted on a holding frame provided on a side of a machine base (not shown) through a guide roll 1a and a top roll 1b. It leads to the mechanism 2.

  The film bag folding mechanism 2 includes a folding guide 2a, which is folded in two along the longitudinal direction of the film F by the folding guide 2a.

  The longitudinal seal mechanism 3 longitudinally seals the opening side and the folded side of the film F folded in half by the film bag folding mechanism 2 by the longitudinal seal body 3b provided in the pair of longitudinal seal roll portions 3a to form the longitudinal seal portion FH. A cylindrical bag-making film F is formed. Note that the vertical seal roll portion 3a is rotationally driven by a driving means 3c comprising a servo motor.

  As shown in FIGS. 1 and 2, the horizontal sealing mechanism 4 includes a rotating mechanism 41 for rotating the pair of heat seal rolls 41 a and a vertical mechanism 42 for moving the heat seal roll 41 a in the vertical direction. ing. The rotation mechanism 41 is provided with a seal plate 41b for forming the horizontal seal portion FW along the longitudinal direction at a plurality of locations on the outer periphery of the pair of heat seal rolls 41a. The seal plate 41b is heated by a heating member (not shown) disposed in the heat seal roll 41a. One heat seal roll 41a is connected to a rotation shaft of a rotation mechanism driving means 41c made of a servo motor via a gear, and the other heat seal roll 41a is connected to one heat seal roll 41a via a gear. Therefore, the pair of heat seal rolls 41a rotate and can be accelerated / decelerated as the rotating shaft of the rotating mechanism driving unit 41c rotates. Further, the rotating mechanism 41 includes a pressurizing unit 41d including an air cylinder, a hydraulic cylinder, or the like for applying a predetermined pressure to the film F sandwiched by a seal plate 41b provided on each of the pair of heat seal rolls 41a. Is provided, and the other heat seal roll 41a is configured to press against one heat seal roll 41a.

  The up-and-down mechanism 42 includes a transport unit 42a including a transport screw for moving the pair of heat seal rolls 41a in the vertical direction, and the nut portion 42b can move in the vertical direction as the transport unit 42a rotates. The nut portion 42b is provided with an attachment portion 42c for connecting with the frame body 41e of the pair of heat seal rolls 41a. As a mechanism for transmitting the rotation to the conveying member 42a, an up-and-down mechanism driving means 42d composed of a servo motor is used. A first pulley 42e is mounted on the rotating shaft 42d1 of the up-and-down mechanism driving means 42d, and the rotating shaft of the conveying means 42a. The second pulley 42f is attached to 42a1, and the rotation of the rotating shaft 42d1 of the vertical mechanism driving means 42d can be transmitted to the conveying means 42a by passing the belt 42g between the pulleys 42e and 42f.

  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 filled with a large-capacity content exceeding 2 liters, for example, 40 cm long × 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 cutting mechanism) 62. The film hold-down cutting mechanism 61 includes a pair of substantially U-shaped film hold-down plates 61a, and each film hold-down plate 61a can be attached to the support plate 61b in a state in which each film hold-down plate 61a can move in the front-rear direction so as to sandwich the film F. It is attached via 61c. As a device for controlling the driving of the film holding plate 61a, a film clamping driving means 61d (third driving means), which will be described later in detail, is composed of a servo motor. The film holding and cutting mechanism 61 is provided with a blade body (cutting member) 61e for cutting the continuous packaging bag RP into individual packaging bags P on one film holding plate 61a. When the blade 61e is holding the continuous packaging bag RP by the pair of film holding plates 61a, the blade 61e moves from the rear position of the one film holding plate 61a to the cutting position, and can cut the continuous packaging bag RP. It arrange | positions on the support plate 61b. The blade 61e can be moved in the front-rear direction by pneumatic control using an electromagnetic valve with an air cylinder as a drive source.

  On the other hand, the up-and-down mechanism 62 includes a transport unit 62a including a transport screw for moving the support plate 61b in the vertical direction, and the nut portion 62b can be moved in the vertical direction as the transport unit 62a rotates. The nut portion 62b is provided with an attachment portion 62c for moving the support plate 61b up and down in accordance with the vertical movement of the nut portion 62b. As a mechanism for transmitting the rotation to the conveying member 62a, an up-and-down mechanism driving means (fourth driving means) 62d comprising a servo motor is used, and a first pulley 62e is mounted on a rotating shaft 62d1 of the up-and-down mechanism driving means 62d. The second pulley 62f is mounted on the rotation shaft 62a1 of the conveying means 62a, and the rotation of the rotating shaft 62d1 of the vertical mechanism driving means 62d is transmitted to the conveying means 62a by passing the belt 62g between the pulleys 62e and 62f. It becomes possible to do.

  With the above-described parts, the film F continuously drawn out from the original film 7 is folded back into a cylindrical shape by the film bag folding mechanism 2 and both ends of the folded film F are vertically folded by the vertical sealing mechanism 3. A bag making film F having a vertical seal portion FH is formed by sealing, and then the bag making film F is laterally sealed by the horizontal seal mechanism 4 to form a horizontal seal portion FW as a bottom, and a bag making having a bottom portion. The film F is filled with a predetermined amount of content via the filling mechanism 5 and then the lateral sealing mechanism 4 again seals the opening side of the bag-making film F to form the lateral sealing portion FW, thereby forming a continuous packaging bag. A vertical filling and packaging apparatus H is obtained in which individual packaging bags FW are obtained by forming RP and cutting the formation site of the lateral seal portion FW of the continuous packaging bag RP by the cutting mechanism 6.

  Next, the electrical configuration of the main part of the present invention will be described with reference to FIG. Reference numeral 20 denotes a control unit mainly composed of a microcomputer. The control unit 20 includes a CPU 20a that executes a processing program to be described later, a ROM 20b that stores the processing program, and a RAM 20c that temporarily stores calculation results and readout results. And an input / output (I / O) interface circuit 20d for connecting an input / output unit, which will be described in detail after each mechanism of the vertical filling and packaging apparatus H, each of the units 20a, 20b, 20c, 20d They are connected by a bus 20e. Further, the control means 20 has a nonvolatile storage means 20f for storing various setting values set by setting means described later in a rewritable state.

  In the input / output interface circuit 20d, a film transfer state detection sensor 21 for detecting the rotation state of the top roller 1b, which is a transfer state detection roller that rotates along with the delivery of the film F, and a print formed on the film F are shown in FIG. A registration mark detection sensor 22 for detecting a register mark (hereinafter referred to as a registration mark) M, a setting means 23 including a touch panel for setting and displaying various setting values, and a heat seal roll 41a of the horizontal sealing mechanism 4. A rotation detection sensor 24 for detecting the rotation state (sealing state) of the seal plate 41b provided is connected as input means. Each of the detection sensors 21, 22, and 24 is configured by a transmission type sensor, a proximity sensor, or the like. The detection sensor 21 can detect the rotational state of the top roller 1b by detecting the presence or absence of a slit provided on the top roller 1b or a dedicated object to be detected. The detection sensor 24 detects the seal plate 41b disposed on the heat seal roll 41a of the horizontal seal mechanism 4.

  The input / output interface circuit 20d includes a driving means 3c comprising a servo motor for rotating the heat seal roll 3a of the vertical sealing mechanism 3 and a driving means comprising a servo motor for rotating the heat sealing roll 4a of the horizontal sealing mechanism 4. (First driving means) 41c, vertical mechanism driving means (second driving means) 42d composed of a servo motor for moving the horizontal seal mechanism 4 in the vertical direction, and the cutting mechanism 6 are moved in the vertical direction. And a pair of film pressing plates 61a of the cutting mechanism 6 are moved in the front-rear direction to shift the film F from the non-nipping state to the nipping state or from the nipping state to the non-nipping state. A driving means 61d for film clamping comprising a servo motor for making the continuous packaging bags RP into individual packaging bags P A solenoid valve 61f which is a driving source for the cylinder to move is connected as output means via respective driver (not shown) the blade 61e of the cutting mechanism 6 back and forth in order.

  In the above-described electrical configuration, the control means 20 can also be used to perform electrical control of other mechanisms. In such a case, a controlled device other than the above-described device is connected to the input / output interface circuit 20d. Although being connected, description of other electrical configurations is omitted for the sake of simplicity.

  Next, the bag making method of the bag making filling and packaging apparatus A will be described in detail with reference to FIGS. In addition, as a bag making method described below, a case where the vertical seal mechanism 3 is used as a feeding mechanism for the film F fed from the film raw fabric 7 will be described as an example. Further, the bag making method of the present embodiment is a bag making method using the lateral seal mechanism 4 and the cutting mechanism 6 when the registration mark M is formed on the film F, the formation position of the registration mark M is laterally sealed and cut. Is shown.

  The control means 20 inputs a detection signal from the detection sensor 22 and controls the drive means 3c of the vertical seal mechanism 3 so that the film feed speed V set by the setting means 23 is obtained. 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 based on the determination result, controls the acceleration and deceleration of the drive means 3c. By doing so, it becomes possible to send out the film F at a constant speed.

  The control means 20 sets the rotational speed of the heat seal roll 41a of the lateral seal mechanism 4, that is, the rotational peripheral speed V1 of the seal plate 41b. The control means 20 has a mechanical structural distance L1 between the position where the registration mark detection sensor 22 is disposed and the position where the horizontal seal mechanism 4 performs horizontal sealing, and the size of the packaging bag P (the length in the conveyance direction of the packaging bag P). Yes, the rotational circumferential speed V1 of the seal plate 41b of the lateral seal mechanism 4 is obtained from the registration mark M formation interval L2 and the film feed speed V. The heat seal roll 41a by the vertical mechanism 42 of the lateral seal mechanism 4 is obtained. The rotational peripheral speed V1 is set so that the addition result (V1 + V2) with the descending speed V2 is not greater than the film feed speed V or less than the film feed speed V. The distance L1 is a parameter predetermined in terms of mechanical structure, and the dimension L2 is a variable set by the setting means 23. The control means 20 determines whether or not the rotational peripheral speed V1 is based on an input from the rotation detection sensor 24 that detects the rotation state of the heat seal roll 41a of the lateral seal mechanism 4, and this Based on the determination result, the drive means 41c is adjusted for acceleration / deceleration.

  The control means 20 sets the drive means 41c of the heat seal roll 41a of the lateral seal mechanism 4 so that the formation position of the registration mark M of the film F to be sent is the rotational peripheral speed V1 calculated so as to be sealed by the seal plate 41b. Control. FIG. 5A shows a drive waveform S1 of the drive means 41c in the rotation mechanism 41 of the horizontal seal mechanism 4. The time t1 controlled at a constant speed in the drive waveform S1 is a region where the registration mark M of the film F is formed. Is laterally sealed with the width of the seal plate 41b. As shown in FIG. 6 (a), the lateral seal mechanism 4 moves the seal plate 41b in the lateral seal mechanism 4 from the sealed state A to the sealed state C at time t1, thereby forming a lateral seal portion on the bag-making film F. FW is formed.

  Here, the seal plate 41b provided in the heat seal roll 41a of the horizontal seal mechanism 4 will be described in detail. As shown in FIG. 6A, the seal plate 41b has a seal surface formed in an arc shape. The sealing plate 41b is upstream from the lateral seal portion FW of the film F by squeezing the contents supplied into the bag-making film F without stopping through the filling mechanism 5 (the direction opposite to the film F transport direction). Can be pushed out into the bag-making film F positioned at the side, and the horizontal sealing can be performed without causing the contents to be bitten by the horizontal sealing portion FW.

  The control means 20 controls the drive means 41c in the rotation mechanism 41 of the horizontal seal mechanism 4 based on the drive waveform S1, and the film (bag making film F) F is laterally transferred by the seal plate 41b disposed on the heat seal roll 41a. In addition to sealing (heat sealing), the vertical mechanism driving means 42d of the vertical mechanism 42 of the horizontal sealing mechanism 4 is controlled as shown in FIG. FIG. 5B shows the drive waveform S2 of the vertical mechanism drive means 42d of the horizontal seal mechanism 4. FIG. The control means 20 starts the descending operation of the vertical mechanism 42 earlier than the sealing timing by the horizontal sealing mechanism 4 (timing to pinch the film F by the sealing plate 41b), and the sealing timing by the sealing plate 41b (FIG. 6A )), The vertical mechanism driving means 42d of the vertical mechanism 42 is controlled so as to be in the constant speed state before and after the horizontal seal is finished in the constant speed state (after the sealing state C in FIG. 6A). The up-and-down mechanism driving means 42d of the up-and-down mechanism 42 is controlled so that the raising operation of the mechanism 42 is started and the up-and-down mechanism 42 is returned to the origin position. The descending speed V2 of the vertical mechanism 42 is set so that the addition result (V1 + V2) with the rotational peripheral speed V1 of the seal plate 1 is not greater than the film feed speed V or less than the film feed speed Va. The ascending speed V3 of the up-and-down mechanism 42 may be a speed that is in time for the timing at which the next registration mark M formation position is laterally sealed.

  As described above, when the control means 20 adds the rotational peripheral speed V1 of the seal plate 41b provided on the heat seal roll 41a and the lowering speed V2 of the heat seal roll 41a by the vertical mechanism 42, the added result is The drive means 41c and 42d of the lateral seal mechanism 4 are controlled so as to be substantially equal to the film feed speed V.

  Next, a cutting method of the cutting mechanism 6 will be described. 6B shows the movement of the cutting mechanism 6 that operates in accordance with the vertical movement of the sealing mechanism 4. In the drawing, the arrow D indicates the lowering / raising operation of the film holding and cutting mechanism 61. FIG. The arrow E indicates the opening / closing operation of the pair of film pressing plates 61a, and the arrow F indicates the front / rear operation of the blade body 61e of the film cutting mechanism 61.

  The control means 20 controls the driving means 61d in the film holding and cutting mechanism 61 of the cutting mechanism 6 in accordance with the drive waveform S1 of the driving means 41c in the rotating mechanism 41 of the horizontal seal mechanism 4. FIG. 5C shows a drive waveform S3 for driving the drive means 61d of the film pressing and cutting mechanism 61 in accordance with the drive waveform S1 of the drive means 41c. As shown in the drive waveform S3 of the drive means 61d, the control means 20 holds the film F by the pair of seal plates 41b and sets a pair in accordance with the timing of starting the horizontal seal (sealed state A in FIG. 6A). The film holding plate 61a is closed (arrow E in FIG. 6 (b)) to sandwich the film F, and the seal plate 41b is separated from the film F to complete the lateral sealing (see the seal in FIG. 6 (a)). According to the state C), the film F is opened by opening the pair of film holding plates 61a (arrow E in FIG. 6B).

  Further, the control means 20 controls the vertical mechanism driving means 62d in the vertical mechanism 62 of the cutting mechanism 6 in accordance with the drive waveform S2 of the vertical mechanism driving means 42d in the vertical mechanism 42 of the horizontal seal mechanism 4. FIG. 5D shows a drive waveform S4 for driving the vertical mechanism drive means 62d in the vertical mechanism 62 of the cutting mechanism 6 in accordance with the drive waveform S2 of the vertical mechanism drive means 42d. The control means 20 starts the lowering operation of the vertical mechanism 62 of the cutting mechanism 6 in accordance with the timing when the downward movement of the vertical mechanism 42 of the horizontal seal mechanism 4 is started (arrow D in FIG. 6B), and suppresses the film. The vertical mechanism driving means 62d of the vertical mechanism 62 is controlled so as to be in a constant speed state before the timing when the film F is clamped by the pair of film pressing plates 61a of the cutting mechanism 61. The descending speed V4 at this time is substantially the same as the film feed speed Va.

  The control means 20 operates the blade body 61e of the film pressing and cutting mechanism 61 in synchronization with the operation of the film pressing plate 61a. FIG. 5E shows a drive waveform S5 of the electromagnetic valve 61f for moving the blade body 61e back and forth. The control means 20 uses the pair of film restraining plates 61a of the film restraining cutting mechanism 61 at the time of lateral sealing of the bag making film F shown in the sealed state B of FIG. (See arrow E in FIGS. 5 (c) and 6 (b)), when the bag-making film F is suppressed by the lateral seal mechanism 4 and the continuous packaging bag RP is suppressed by the cutting mechanism 6, respectively. The electromagnetic valve 61f is operated to advance the blade body 61e to cut the transverse seal portion FW of the film F (arrow F in FIG. 6B), and then the electromagnetic valve (fifth drive means) to retract the blade body 61e. ) 61f is controlled (arrow F in FIG. 6B). As is apparent from the drive waveform S5, the control means 20 aims at the approximate 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 cut the film F. . The control means 20 starts the ascending operation of the vertical mechanism 62 after the continuous packaging bag RP is cut by the film restraining cutting mechanism 61 and returns the vertical mechanism 62 to the origin position (arrow D in FIG. 6B). The rising speed V5 at that time may be a speed in time for holding the next horizontal seal forming position between the pair of film pressing plates 61a at the origin position.

  The control means 20 is based on the arrangement position of the registration mark detection sensor 22 and the mechanical structural distance L3 to the position cut by the cutting mechanism 6, the dimension L2 of the packaging bag P, and the film feed speed Va. Thus, the cutting timing is determined. The distance L3 is a parameter predetermined in terms of mechanical structure.

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

  Next, another embodiment of the cutting mechanism 6 will be described with reference to FIG. 8, but the same reference numerals are given to the same or corresponding portions as those of the above-described embodiment, and detailed description thereof will be omitted. FIG. 8 is a diagram illustrating the operation of the film holding and cutting mechanism 61 and the vertical mechanism 62 in the cutting mechanism 6, and the position of the cutting mechanism 6 shown in FIG. 8A is the origin position. The control means 20 controls the vertical mechanism driving means 62d of the vertical mechanism 62 so that the pair of film holding plates 61a is moved downward as the continuous packaging bag RP is lowered, and the pair of film holding plates 61a is used for continuous packaging. The film clamping drive means 61d is controlled so as to sandwich the lateral seal portion FW (seal portion) of the bag RP (FIG. 8 (a)), and the predetermined while the lateral seal portion FW is sandwiched by the film holding plate 61a The electromagnetic valve 61f is controlled (turned on) so as to cut the approximate center of the horizontal seal portion FW with the blade body 61b at the timing (FIG. 8B), and then has the horizontal seal portion FW to be cut next. In order to prevent the downward movement of the continuous packaging bag RP, the pair of film holding plates 61a are moved in the opening direction (hereinafter referred to as opening operation) and are driven so as to move upward. Controlling the stage 61d and vertical mechanism drive unit 62d (FIG. 8 (c), (d)). Thereafter, the control means 20 controls the film clamping drive means 61d and the vertical mechanism drive means 62d so as to return the film holding and cutting mechanism 61 and the vertical mechanism 62 to the original positions, respectively (FIG. 8 (e)). When the transport speed of the film F (the descending speed of the continuous packaging bag RP) is fast, the film restraining plate 61d may be lifted after the opening operation of the pair of film restraining plates 61d is completed or during the opening operation.

  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 follow the form of the continuous packaging bag RP having the lateral seal portion FW to be cut next, so that the continuous packaging is performed. Since the film restraining plate 61a can be operated in a state along the form of the continuous packaging bag RP without contacting the bag RP, the operating point is reached from the origin position of the cutting mechanism 6, and then returns to the origin position. The cycle time 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.

  The vertical filling and packaging apparatus H and the bag making method thereof include a rotation mechanism 41 for rotating the pair of heat seal rolls 41a as the horizontal seal mechanism 4 and the pair of heat seal rolls 41a for moving in the vertical direction. Are provided on the pair of heat seal rolls 41a, and are continuously operated by rotating the pair of heat seal rolls 41a. The film F to be sent out is clamped by the seal plate 41b, the seal plate 41b is moved down together with the film F to be sent out, and the seal plate 41b is continuously rotated during the lowering operation to produce the bag-making film. F is formed by forming a horizontal seal part FW and has a conventional box motion type horizontal seal mechanism. Compared to the vertical filling and packaging apparatus, since the large-capacity packaging bag P can be obtained while continuously feeding the film F without stopping the transfer of the film F, a large-capacity packaging bag having excellent productivity is obtained. A vertical filling and packaging apparatus can be obtained. Moreover, since the horizontal seal part FW can be formed by the sealing process accompanied by the squeezing action on the seal plate 41b by using the rotation mechanism 41 of the horizontal seal mechanism 4, the occurrence of a sealing failure of the horizontal seal part FW is suppressed. Can do.

  In addition, a drive means 41c for rotating the heat seal roll 41a of the horizontal seal mechanism 4 and an up-and-down mechanism drive means 42d for rotating and driving a conveying screw provided in the vertical mechanism 42 of the horizontal seal mechanism 4 are provided. 20 is V1 + V2 when the rotational peripheral speed of the seal plate 41b provided on the heat seal roll 41a of the vertical seal mechanism 4 is V1, and the lowering speed of the heat seal roll 41b by the vertical mechanism 42 of the vertical seal mechanism 4 is V2. Is set to be substantially equal to the film feeding speed V, the generation of wrinkles when the film F that is continuously fed is laterally sealed, the distortion of the packaging form caused by the film F being pulled, or Inconveniences such as variations in cutting position due to the cutting mechanism 6 disposed in the subsequent stage are not caused.

  Further, the cutting mechanism 6 is provided on the downstream side of the horizontal sealing 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 sealing mechanism 4, and a pair of heat seals of the horizontal sealing mechanism 4. When the film F is sandwiched by the seal plate 41b provided in the roll 41a, the continuous packaging bag RP is controlled to be cut. When cutting a large-capacity continuous packaging bag RP, Therefore, it is possible to obtain a good cutting.

  Further, by forming the seal surface of the seal plate 41b provided in the horizontal seal mechanism 4 in an arc shape, even when the contents are present at the formation position of the horizontal seal portion when the horizontal seal portion FW is formed, a pair It is possible to push out the contents to the bag-making film F positioned below by the squeezing action of the sealing plate 41b, and the lateral seal with good appearance without causing the contents to be bitten in the lateral seal portion FW Part FW can be obtained.

  Further, since the content supply operation by the filling mechanism 5 can be continuously performed, the intermittent filling operation of the filling pump for supplying the content is not required, and thus a large-capacity packaging bag is obtained. Therefore, it is possible to further improve the productivity of the vertical filling and packaging apparatus.

  Further, the cutting mechanism 6 performs an opening operation and a raising operation so as to follow the form of the continuous packaging bag RP having the lateral seal portion FW to be cut next in the opening operation and the raising operation of the film holding plate 61a. Since the film clamping plate 61a can be operated in the state along the form of the continuous packaging bag RP without contacting the continuous packaging bag RP, the cycle time of the cutting mechanism 6 can be shortened, and the large-capacity packaging Productivity of the vertical filling and packaging machine H for obtaining the 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 separately driven. However, in the present invention, the horizontal seal mechanism 4 is interlocked with the vertical operation of the horizontal seal mechanism 4. Alternatively, a cam mechanism that operates can be used.

  In the embodiment of the present invention, since the pair of heat seal rolls 41a starts to descend, the film F is sandwiched between the seal plates 41b provided on the pair of heat seal rolls 41a and having a predetermined seal width. Although the heat seal roll 41a is lifted when the film F is held from the nipping state to the non-nipping state, the heat seal roll 41a is returned to the operating origin. When the film F is provided between the heat seal rolls 41a and the film F is sandwiched by the seal plate 41b, the lowering operation of the heat seal roll 41a is started, and when the seal plate 41b transitions from the sandwiched state where the film F is sandwiched to the non-clamped state. The heat seal roll 41a is moved up to move the heat seal roll 41a. It is one to return to the dynamic origin may be.

  In the embodiment of the present invention, the film F on which the registration mark M is formed is used as an example, and the lateral seal portion FW is formed at the registration mark M formation position. However, the registration mark M is not formed. Even when the film F is used, the present invention is applicable. In the control method of the lateral seal mechanism 4 in this case, the seal plate 41b is based on the film feed speed V, the packaging bag dimension L2, and the interval between the plurality of seal plates 41b arranged on the heat seal roll 41b. The rotation speed of the heat seal roll 41a is controlled on the basis of a detection signal from the rotation detection sensor 24 that detects the rotation state of the seal plate 41b of the lateral seal mechanism 4. Further, in the control method of the cutting mechanism 6, the film feed speed V, the packaging bag dimension L2, and the mechanical structural distance from the position where the horizontal sealing mechanism 4 performs horizontal sealing to the position where the cutting mechanism 6 cuts. Based on the above, the cutting timing of the cutting mechanism 6 is determined, and the film suppression cutting mechanism 61 in the cutting mechanism 6 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. To do. 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 lateral seal mechanism 4.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a vertical filling and packaging apparatus that performs three-side seal or four-side seal, and also folds one film into two to form a cylinder, or stacks two films to form a cylinder. The present invention can be applied to a bag filling apparatus or a vertical filling and packaging apparatus that guides bag making in a cylindrical shape via a sailor plate.

The figure which shows the whole structure of the vertical filling packaging apparatus of embodiment of this invention. The figure which shows the horizontal seal | sticker mechanism of embodiment same as the above. The figure which shows the cutting | disconnection mechanism of embodiment same as the above. The block diagram which shows the electrical constitution of the vertical filling packaging machine of embodiment same as the above. The figure which shows the operation | movement timing of the horizontal sealing mechanism and cutting | disconnection mechanism of embodiment same as the above. The figure which shows operation | movement of the horizontal sealing mechanism and cutting | disconnection mechanism of embodiment same as the above. The figure which shows the horizontal sealing mechanism and cutting | disconnection mechanism of embodiment same as the above The figure which shows other embodiment in the cutting | disconnection mechanism of this invention.

Explanation of symbols

H Vertical filling and packaging device P Packaging bag RP Continuous packaging bag F Film (bag making film)
FW Horizontal seal portion FH Vertical seal portion 3 Vertical seal mechanism 4 Horizontal seal mechanism 41 Rotating mechanism 41a Heat seal roll 41b Seal plate 41c Drive means (first drive means)
42 Vertical mechanism 42a Conveying means (conveying screw)
42d Vertical mechanism driving means (second driving means)
DESCRIPTION OF SYMBOLS 5 Filling mechanism 6 Cutting mechanism 61 Film suppression cutting mechanism 61a Film suppression plate 61b Blade body 61d Film clamping drive means (third drive means)
61f Solenoid valve (fifth drive means)
62 Vertical mechanism (vertical mechanism for cutting machine)
62d Vertical mechanism driving means (fourth driving means)

Claims (17)

The film sent from the film is formed into a cylindrical shape, this film is vertically sealed by a vertical sealing mechanism, horizontally sealed by a horizontal sealing mechanism, and filled in a packaging bag formed by the vertical sealing and the horizontal sealing. A vertical filling and packing device for filling contents through a mechanism,
A vertical filling and packaging apparatus comprising: a rotation mechanism for rotating a pair of heat seal rolls as the horizontal seal mechanism; and a vertical mechanism for moving the heat seal rolls in the vertical direction. . The lowering operation of the heat seal roll is started from the time when the film is sandwiched between the pair of heat seal rolls provided by the seal plates having a predetermined seal width, and the seal plate sandwiches the film from the sandwiched state. 2. The vertical filling and packaging apparatus according to claim 1, wherein at the time of shifting to the sandwiched state, the heat seal roll is lifted to return the heat seal roll to an operation origin. After the pair of heat seal rolls starts to descend, the film is sandwiched between seal plates that are provided on the pair of heat seal rolls and have a predetermined seal width, and the seal plate sandwiches the film from the sandwiched state. 2. The vertical filling and packaging apparatus according to claim 1, wherein at the time of transition to a state, the heat seal roll is moved upward to return the heat seal roll to an operation origin. Electrically controlling the first drive means for rotationally driving the heat seal roll, the second drive means for rotationally driving the conveying screw provided in the vertical mechanism, and the first and second drive means Control means, and the control means when the rotational peripheral speed of the seal plate provided in the heat seal roll is V1, and the lowering speed of the heat seal roll by the vertical mechanism is V2. 4. The vertical filling packaging according to claim 1, wherein the first and second driving means are controlled so that V1 + V2 is substantially equal to the film feed speed V. apparatus. A cutting mechanism for cutting a continuous packaging bag formed by the horizontal sealing mechanism on the downstream side of the horizontal sealing mechanism, the cutting mechanism moving up and down in accordance with the vertical mechanism of the horizontal sealing mechanism The vertical filling and packaging apparatus according to any one of claims 1 to 4, further comprising an upper and lower mechanism. The said cutting | disconnection mechanism cut | disconnects the said continuous packaging bag, when the said film is clamped by the said sealing board with which a pair of said heat seal roll of the said horizontal sealing mechanism is equipped. The vertical filling and packaging apparatus described. An opening / closing mechanism that includes a pair of film pressing plates that sandwich the sealing portion of the continuous packaging bag and that opens and closes the film pressing plates by a third driving means; and a fourth mechanism that moves the cutting mechanism vertical mechanism up and down. And a fifth drive means for operating a cutting member that cuts the continuous packaging bag in the cutting mechanism,
The control means for electrically controlling the third, fourth, and fifth driving means is configured such that the film holding plate is moved downward as the continuous packaging bag is lowered. 4, and the third driving means is controlled so that the seal portion of the continuous packaging bag is sandwiched by a pair of the film pressing plates, and the sealing portion is clamped by the film pressing plates. Controlling the fifth driving means so as to cut the seal portion with the cutting member at a predetermined timing inside;
Thereafter, the third and fourth drive means are controlled so that the pair of the film holding plates are opened and raised so as not to hinder the downward movement of the continuous packaging bag having the seal portion to be cut next. The vertical filling and packaging machine according to claim 5 or 6, characterized by comprising: The control means controls the third and fourth driving means in the opening and closing mechanism and the cutting mechanism vertical mechanism so that the pair of film holding plates follow the form of the packaging bag. The vertical filling and packaging machine according to claim 7. The vertical filling and packaging apparatus according to claim 1, wherein the filling mechanism continuously performs the operation of supplying the contents. The vertical filling and packaging apparatus according to any one of claims 2, 3, 4, and 6, wherein the sealing plate has a sealing surface formed in a substantially arc shape. The film sent from the film is formed into a cylindrical shape, this film is vertically sealed by a vertical sealing mechanism, horizontally sealed by a horizontal sealing mechanism, and filled in a packaging bag formed by the vertical sealing and the horizontal sealing. A bag making method for a vertical filling and packaging apparatus for filling contents through a mechanism,
A rotation mechanism for rotating a pair of heat seal rolls that are the horizontal seal mechanism, and a vertical mechanism for moving the heat seal roll in the vertical direction,
Seal films formed so as to obtain a predetermined seal width are respectively disposed on the pair of heat seal rolls, and the film continuously fed by rotating the pair of heat seal rolls is used as the film. The film is sandwiched by a seal plate, and the seal plate is moved downward together with the film to be fed, and the seal plate is continuously rotated during the lowering operation to form a lateral seal portion on the film. A bag making method for a vertical filling and packaging apparatus. The said filling mechanism performs the supply operation | movement of the said content continuously, The bag making method of the vertical filling packaging apparatus of Claim 11 characterized by the above-mentioned. When the rotational peripheral speed of the seal plate provided on the heat seal roll is V1, and the lowering speed of the heat seal roll by the vertical mechanism is V2, V1 + V2 is substantially equal to the film feed speed V. The bag making method of the vertical filling and packaging apparatus according to claim 11. The cutting mechanism is provided on the downstream side of the horizontal sealing mechanism, and the cutting mechanism is vertically moved in accordance with the vertical movement of the horizontal sealing mechanism. A bag making method for the vertical filling and packaging apparatus described. The said cutting | disconnection mechanism cut | disconnects the said continuous packaging bag, when the said film is clamped by the said sealing board with which a pair of said heat seal roll of the said horizontal sealing mechanism is equipped. Bag making method for vertical filling and packaging equipment. The cutting mechanism is provided with a pair of film pressing plates for holding the sealing portion of the continuous packaging bag and a cutting member for cutting the sealing portion, and the film pressing plate is lowered as the continuous packaging bag is lowered. While being lowered, the seal portion of the continuous packaging bag is sandwiched by a pair of the film restraining plates, and the seal portion is cut by the cutting member at a predetermined timing while the seal portion is sandwiched by the film restraining plates. Then, the pair of film holding plates are opened and raised so as not to hinder the downward movement of the continuous packaging bag having the seal portion to be cut next. Bag making and packaging of the vertical filling and packaging machine described in 1. The bag making method of the bag making method of the vertical filling and packaging machine according to claim 16, wherein the pair of film holding plates are opened and raised so as to follow the form of the packaging bag.

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