JP4782373B2 - Vertical filling and packaging apparatus and bag making method thereof - Google Patents

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, and the packaging film is fed by a film feeding device, and the packaging film is moved down by a box motion type lateral seal / (end seal) cut mechanism while moving down one pack of film. A lateral seal portion is formed as a bottom 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 original position so that the opening side of the packaging film is moved to the lateral side. A packaging bag is obtained by lateral sealing by a 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 the vertical filling and packaging apparatus provided with such a box motion type horizontal sealing / cutting mechanism are disclosed in Patent Document 1, Patent Document 2, and the like.

  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, it has a problem that productivity cannot be improved as compared with a vertical filling and packaging apparatus that is equipped with a rotary-type horizontal sealing mechanism and can continuously send out a film.
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. Furthermore , in the case where 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 vertical filling and packaging apparatus of the present invention forms a film fed from a film raw material into a cylindrical shape as described in claim 1 and continuously feeds the film downward. A vertical filling and packaging device that vertically seals by a vertical seal mechanism, horizontally seals by a horizontal seal mechanism, and fills the contents in a packaging bag formed by the vertical seal and the horizontal seal via a filling mechanism, Rotation mechanism for rotating the pair of heat seal rolls as the horizontal seal mechanism, seal plates respectively provided on the pair of heat seal rolls, and upper and lower for moving the pair of heat seal rolls in the vertical direction And a cutting mechanism for cutting the continuous packaging bag formed by the horizontal sealing mechanism on the downstream side of the horizontal sealing mechanism. With a rotation of a pair of heat seal rolls, it comprises a sealing surface that laterally seals the film while extruding the contents in the film to the upstream side by sandwiching and squeezing the film filled with the contents, The cutting mechanism includes a cutting mechanism vertical mechanism that moves up and down in accordance with the vertical mechanism of the horizontal sealing mechanism, and an opening / closing mechanism that opens and closes a pair of film pressing plates, and the horizontal sealing mechanism has a heat seal roll. While the film is lowered by the vertical mechanism and rotated by the rotating mechanism and the film is sandwiched by the seal plate of the heat seal roll, the pair of film holding plates are simultaneously lowered by the vertical mechanism for the cutting mechanism. while sandwiching the film by the film holding plate by closing with the closing mechanism, this cutting the film The one in which the features.

  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.

The vertical-type filling and packaging apparatus according to claim 4, in the vertical filling packaging apparatus according to any one of claims 1 to 3, a first drive for driving rotation of said heat sealing roll means, second drive means for rotationally driving the conveyor screw provided in the elevator mechanism, the first, control means for electrically controlling the second driving means, wherein the control 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, V1 + V2 is substantially equal to the film feed speed V. Further, the first and second driving means are controlled.

The vertical-type filling and packaging apparatus according to claim 5, in vertical filling and packing device according to any one of claims 1 to 4, suppressed pair of films sandwiching the seal portion of the continuous packaging bag includes a plate, cutting said opening and closing mechanism for opening and closing by a third drive means said film holding plate, and a fourth drive means for vertical movement up and down mechanism for the cutting mechanism, the continuous packaging bag cut A fifth drive means for operating the member, and the control means for electrically controlling the third, fourth, and fifth drive means as the continuous packaging bag descends. And controlling the fourth driving means of the vertical mechanism for the cutting mechanism so that the film pressing plate moves downward, and sandwiching the seal portion of the continuous packaging bag by the pair of film pressing plates Said And controlling the fifth driving means to cut the seal portion with the cutting member at a predetermined timing during the clamping of the seal portion by the film holding plate, and then 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 having the seal portion to be cut. is there.

The vertical filling and packaging apparatus according to claim 6 is the vertical filling and packaging apparatus according to claim 5 , 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.

The vertical filling and packaging apparatus according to claim 7 is the vertical filling and packaging apparatus according to any one of claims 1 to 6 , wherein the filling mechanism continuously performs the supply operation of the contents. It is characterized by this.

Further, the vertical filling and packaging apparatus according to claim 8 is the vertical filling and packaging apparatus according to any one of claims 2 to 4 , wherein the seal plate is formed in a substantially arc shape. It is characterized by this.

Moreover, in order to solve the said subject, the bag making method of the vertical filling packaging apparatus of this invention forms the film sent out from a film raw material into a cylinder shape as described in Claim 9 , This film is downward. Vertical filling with a vertical sealing mechanism, a vertical sealing mechanism, a horizontal sealing mechanism, a horizontal sealing mechanism, and a packing bag formed by the vertical sealing and the horizontal sealing is filled with the contents via a filling mechanism. A bag making method for a packaging apparatus, wherein a rotation mechanism for rotating a pair of heat seal rolls as the horizontal seal mechanism, a vertical mechanism for moving the pair of heat seal rolls in a vertical direction, and the horizontal A cutting mechanism that moves up and down in accordance with the vertical movement of the horizontal sealing mechanism on the downstream side of the sealing mechanism, and a sealing plate formed so as to obtain a predetermined sealing width Each of the heat seal rolls is disposed and rotated by rotating a pair of the heat seal rolls so that the film that is continuously fed is sandwiched by the seal plate, and the seal plate is moved downward together with the film that is fed. In this descending operation, the sealing plate is continuously rotated, so that the film filled with the contents is sandwiched and squeezed to extrude the contents in the film upstream. Forming a horizontal seal portion in the cutting mechanism, a vertical mechanism for a cutting mechanism that moves up and down in accordance with the vertical mechanism of the horizontal seal mechanism, and an opening and closing mechanism that opens and closes a pair of film pressing plates, the cutting mechanism, When the horizontal sealing mechanism holds the film between the sealing plates of the heat seal rolls, the pair of film restraints is simultaneously performed. While sandwiching the film by the film holding plate by closing with the opening and closing mechanism with lowering the plate up and down mechanism for the cutting mechanism, characterized in that cutting the transverse seal portion formed on the film by the cutting mechanism It is what.

The bag making method for the vertical filling and packaging apparatus according to claim 10 is the bag making method for the vertical filling and packaging apparatus according to claim 9 , wherein the filling mechanism continuously feeds the contents. It is characterized by being performed.

The bag-making method of a vertical type filling and packaging apparatus according to claim 11, in bag-making method of a vertical type filling and packaging apparatus according to claim 9 or 10, the rotation of the seal plate provided in the heat sealing roll When the peripheral speed 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.

A bag making method for a vertical filling and packaging apparatus according to claim 12 is the bag making method for a vertical filling and packaging machine according to any one of claims 9 to 11 , wherein the continuous packaging bag is provided in the cutting mechanism. of a pair of the film holding plate for the sealing portion sandwiched, together with the a cutting member for cutting the sealed portions, the film holding plate operates descends with the descent of the continuous packaging bag, a pair The seal portion of the continuous packaging bag is pinched by the film pressing plate, and the sealing portion is cut by the cutting member at a predetermined timing while the sealing portion is held by the film pressing plate, and then cut 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 sealed portion.

Moreover, 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 machine according to claim 12 , wherein the pair of film holding 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.

Film bag folding mechanism 2 is provided with a folding guide 2a, it is folded in two along this folding guide 2a of the film F in the longitudinal direction of it.

The vertical seal mechanism 3 is configured to vertically seal the opening side and the folded side of the film F folded in two by the film bag folding mechanism 2 by the vertical seal body 3b provided in the pair of vertical seal roll portions 3a. And a cylindrical bag-making film F is obtained. 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, along the longitudinal direction at a plurality of locations of the outer periphery of the pair of heat seal rolls 41a, sealing plate 41b for forming a transverse seal portion FW is provided. 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. In addition, the rotating mechanism 41 includes a pressurizing unit 41d including an air cylinder , a hydraulic cylinder, and the like for applying a predetermined pressure to the film F sandwiched by the seal plates 41b provided on 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. Film suppress cutting mechanism 61 includes a pair of film holding plate 61a shaped substantially U, each film holding plate 61a so as to sandwich the film F at each movable in the longitudinal direction, the support plate 61b It is attached via the attachment portion 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 used. The film holding and cutting mechanism 61 includes 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 move 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.

The output interface circuit 20d includes a film transport state detection sensor 21 for detecting the rotational state of the top roller 1b consisting of the transfer state detection roller to rotate with with delivery of full I Lum F, are printed on the film F Figure 5 , 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 of the horizontal sealing mechanism 4 a rotation detecting sensor 24 for detecting the rotational state of the sealing plate 41b provided in 41a (sealed state), is connected as an 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.

Also the input-output interface circuit 20d, and a driving unit 3c consisting servomotor heat sealing roll 3a of vertical sealing mechanism 3 rotates, comprising a heat sealing roll 41 a horizontal sealing mechanism 4 from the servo motor for rotating the drive Means (first drive means) 41c, vertical mechanism drive means (second drive means) 42d composed of a servo motor for moving the horizontal seal mechanism 4 in the vertical direction, and the cutting mechanism 6 moved in the vertical direction And a pair of film holding plates 61a of the cutting mechanism 6 in the front-rear direction in order to shift the film F from the non-nipping state to the nipping state or from the nipping state to the non-nipping state. The film clamping drive means 61d composed of a servo motor for moving the continuous packaging bag RP into individual packaging bags P Therefore, an electromagnetic valve 61f serving as a drive source of a cylinder for moving the blade body 61e of the cutting mechanism 6 back and forth is connected as output means via respective drive drivers (not shown).

  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, and 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 20 determines whether or not the input time of the detection signal from the detection sensor 22 is input at a constant period based on the film feed speed V, and based on the determination result, the drive means 3c is subjected to acceleration / deceleration control. 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 lowering speed when the V2, the rotational peripheral speed V1 is set as the addition result of the lowering speed V2 (V1 + V2) is not a film greater than feed velocity V, or off I Lum feed speed V smaller than. 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, for the determination of whether the rotary peripheral velocity V1, determined on the basis of the input from the rotation sensor 24 for detecting the rotational state of the heat seal rolls 41a of the transverse sealing mechanism 4, the acceleration and deceleration to adjust the driving means 41c based on the determination result.

  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 ascending operation of the mechanism 42 is started and the up-and-down mechanism 42 is returned to the origin position. The lowering speed V2 of the vertical movement mechanism 42, the addition result of the rotary peripheral velocity V1 of the sealing plate 1 (V1 + V2) is set to be no film greater than feed velocity V, or off I Lum feed speed V smaller than. 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 V.

The control means 20 operates the blade body 61e of the film pressing and cutting mechanism 61 in accordance with the operation timing 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. sandwiched (see arrow E shown in FIG. 5 (c) and FIG. 6 (b)), the bag making film F in the transverse sealing mechanism 4, when that their respective suppressing continuous packaging bag RP cutting mechanism 6, the electromagnetic The valve 61f is operated to advance the blade body 61e to cut the lateral 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 where it is cut by the cutting mechanism 6, the dimension L2 of the packaging bag P, and the film feed speed V. 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. A vertical plate 42 and a seal plate 41b formed so as to obtain a predetermined seal width are disposed on the pair of heat seal rolls 41a, and the pair of heat seal rolls 41a are rotated . the film F which is continuously delivered sandwiched by the sealing plate 41b, the sealing plate 41b, is lowered operate with film F delivered, manufactured by rotating continuously operated sealing plate 41b during the lowering operation It is formed by forming a lateral seal FW on the bag film F, and a conventional box motion type lateral seal mechanism. Compared with the vertical filling packaging apparatus to obtain, since it is possible to obtain a packaging bag P of large capacity while feeding the continuous film F without stopping the transport of the film F, the large capacity type packaging bag with excellent productivity A vertical filling and packaging apparatus for obtaining 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 smoothly push out the contents to the bag-making film F positioned above by the ironing action of the arc-shaped sealing surface of the sealing plate 41b, and the biting of the contents does not occur in the lateral seal portion FW. In addition, it is possible to obtain a lateral seal portion FW with a good appearance.

  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 sandwiched 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. 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 (13)

The film sent from the film is formed into a cylindrical shape, and the film is vertically sealed by a vertical seal mechanism while being continuously sent downward, and is horizontally sealed by a horizontal seal mechanism, and is 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,
A rotation mechanism for rotating a pair of heat seal rolls which are the horizontal sealing mechanism;
A seal plate provided on each of the pair of heat seal rolls;
A vertical mechanism for moving the pair of heat seal rolls in the vertical direction;
A cutting mechanism for cutting the continuous packaging bag formed by the horizontal sealing mechanism on the downstream side of the horizontal sealing mechanism,
The seal plate horizontally seals the film while extruding the contents in the film to the upstream side by sandwiching and squeezing the film filled with the contents as the pair of heat seal rolls rotate. With a sealing surface
The cutting mechanism includes a cutting mechanism vertical mechanism that moves up and down in accordance with the vertical mechanism of the horizontal sealing mechanism, and an opening / closing mechanism that opens and closes a pair of film pressing plates, and the horizontal sealing mechanism has a heat seal roll. While the film is lowered by the vertical mechanism and rotated by the rotating mechanism and the film is sandwiched by the seal plate of the heat seal roll, the pair of film holding plates are simultaneously lowered by the vertical mechanism for the cutting mechanism. A vertical filling and packaging apparatus that cuts the film while being closed by the opening and closing mechanism and sandwiching the film by the film holding plate . Starts decreasing operation of the heat sealing roll from the time of sandwiching the film by the sealing plate having a predetermined seal width provided on a pair of said heat sealing roll, the clamping state of the sealing plate sandwiching the film 2. The vertical filling and packaging apparatus according to claim 1, wherein the heat seal roll is moved up to return to the operation origin when the heat seal roll is moved to the non-clamping state. 3.   After the pair of heat seal rolls starts to descend, 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 is not in a sandwiched state of sandwiching the film. 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. First driving means for rotationally driving the heat seal roll;
Second driving means for rotationally driving a conveying screw provided in the vertical mechanism;
Control means for electrically controlling the first and second drive means,
When the rotational 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 the film feed speed V. The vertical filling and packaging apparatus according to any one of claims 1 to 3, wherein the first and second driving means are controlled so as to be substantially equal. A pair of said film holding plate for holding a sealing portion of the continuous packaging bag, and the opening and closing mechanism for opening and closing by a third drive means said film holding plate,
A fourth driving means for vertically moving the cutting mechanism vertical mechanism;
A fifth driving means for operating a cutting member for cutting the continuous packaging bag, and the cutting mechanism comprises
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. The fifth drive means is controlled so as to cut the seal portion with the cutting member at a predetermined timing, and thereafter the lowering operation of the continuous packaging bag having the seal portion to be cut next is not hindered. to, according to claim 1 in which a pair of the film holding plate said to operate opening operation and increased third, characterized by comprising controlling the fourth driving means to claim 4 Vertical filling Packaging device. 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 apparatus according to claim 5 . The vertical filling and packaging apparatus according to any one of claims 1 to 6 , 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 to 4 , 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, and the film is vertically sealed by a vertical seal mechanism while being continuously sent downward, and is horizontally sealed by a horizontal seal mechanism, and is formed by the vertical seal and the horizontal seal. A bag making method for a vertical filling and packaging apparatus for filling contents into a packaging bag via a filling mechanism,
A rotation mechanism for rotating a pair of heat seal rolls which are the horizontal sealing mechanism;
A vertical mechanism for moving the pair of heat seal rolls in the vertical direction;
A cutting mechanism that moves up and down in accordance with the vertical movement of the horizontal sealing mechanism on the downstream side of the horizontal sealing mechanism,
The film that is continuously fed by disposing a seal plate formed so as to obtain a predetermined seal width on each of the pair of heat seal rolls and rotating the pair of heat seal rolls. The film filled with the contents is clamped by sandwiching the seal plate, lowering the seal plate together with the film to be delivered, and continuously rotating the seal plate during the lowering operation. By squeezing out, the side seal part is formed on the film while pushing the contents in the film upstream,
A cutting mechanism vertical mechanism that moves up and down in accordance with the vertical mechanism of the horizontal sealing mechanism and an opening / closing mechanism that opens and closes a pair of film pressing plates are disposed in the cutting mechanism, and the horizontal sealing mechanism is the heat seal roll. At the same time that the film is held by the sealing plate, the pair of film holding plates are lowered by the vertical mechanism for the cutting mechanism and closed by the opening / closing mechanism, and the film holding plate is held by the film holding plate. A bag making method for a vertical filling and packaging apparatus, wherein the horizontal seal portion formed on the film is cut by the cutting mechanism. The bag making method for a vertical filling and packaging apparatus according to claim 9 , wherein the filling mechanism continuously performs the operation of supplying the contents. 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 9 or 10 , wherein the bag filling method is the same as claim 9 . Comprising a pair of said film holding plate for holding a sealing portion of the continuous packaging bag to the cutting mechanism, and a cutting member for cutting the sealing portions,
The film holding plate moves downward as the continuous packaging bag descends, and the seal portion of the continuous packaging bag is held between the pair of film holding plates, and the seal portion is being held by the film holding plate. A pair of the 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 after the sealing portion is cut by the cutting member at a predetermined timing. The bag making method for a vertical filling and packaging machine according to any one of claims 9 to 11, wherein the bag making method operates. 13. The bag making method for a vertical filling and packaging machine according to claim 12 , 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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