JP2013112383A - Lateral type bag-making, filling and packing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lateral type bag-making, filling and packing machine in which when an end sealing device performing a box motion stops at an interdigitation position to a packaging material, a heater block of the end sealing device is located at an open position, and when the operation of the end sealing device is restarted, the heater block is restored to a locus of the box motion.SOLUTION: When the end sealing device stops (pauses), the heater blocks 31a and 31b stop at the interdigitation positions (HS and V3) where the heater blocks 31a and 31b pinch the packaging material between them (stop operation 1). Responding to the stop operation, the up-down driving servo motor is ordered to move the heater blocks 31a and 31b to the retreat positions (HS and V1) opened in the up-down direction (stop operation 2). Since the heater blocks 31a and 31b are separated from the packaging material in the up-down direction, the packaging material does not melt or thermally denatured by being overheated. When the operation of the packaging machine is restarted, the heater blocks 31a and 31b restart only the horizontal movement, and afterward when the heater blocks 31a and 31b reach the position (H3 and V1) on the box motion, the heater blocks 31a and 31b restart the up-down movement.

Description

  The present invention provides a multi-motion type end seal device in which the heater block is driven by separate drive sources in the vertical and horizontal directions, and the outputs of both drive sources are combined to cause the heater block to perform box motion operation. The present invention relates to a horizontal bag making and filling machine.

  Conventionally, a horizontal bag making filling and packaging machine is used as a basic structure in the example of the horizontal bag making filling and packaging machine shown in FIG. 1 which is a side view and FIG. 2 which is a plan view. A film feeding device 2 for forming the cylindrical packaging material Ft while transporting Fw downstream; a supply device 1 for the packaging product P for feeding the packaging product P to the cylindrical packaging material Ft at regular intervals; End sealing the cylindrical packaging material Ft having the product P inside in a direction crossing at the position between the adjacent packaged products P, P, and cutting the cylindrical packaging material Ft in the middle of the end seal And a sealing device 3. The feeding device 1, the film feeding device 2, and the end seal device 3 are driven by servo motors separately, and the control device 4 operates these devices 1 to 3 in synchronization with each other while maintaining a predetermined phase difference. Yes. By such drive control, a seal is applied to the belt-shaped packaging material Fw on which the printed pattern is repeatedly applied in the feeding direction corresponding to the bag to be manufactured, so that the printed pattern appears at the correct position on the bag. A pillow package Bp is manufactured in which the packaged product P is housed in the manufactured bag (see, for example, Patent Document 1).

  In the horizontal bag making and filling and packaging machine shown in FIG. 1 and FIG. 2, the film feeding device 2 has a paper feeding mechanism composed of a paper feeding roller 21 and a paper drawing roller 23 driven by a film feeding servomotor SM2A. The belt-shaped packaging material Fw is fed out from the raw fabric roll Fr and sent to the downstream side. The fed-out belt-shaped packaging material Fw is formed into a substantially closed curved shape by the cylinder making device 22. The paper drawing roller 23 includes left and right rollers 23a and 23b driven by a film feeding servo motor SM2B, and sandwiches both end portions of the packaging material between the roller peripheral surfaces to feed the belt-shaped packaging material Fw to the downstream side. The center sealer 24 forms the cylindrical packaging material Ft by sticking both ends in the width direction of the packaging material that is fed out from the cylinder making device 22 and formed into a curved shape, and applying a center seal. The center sealer 24 includes seal rollers 24a and 24b driven by a film feed servomotor SM2C. The sealing rollers 24a and 24b rotate while sandwiching both end portions of the packaging material between the circumferential surfaces of the rollers to provide center sealing and convey the cylindrical packaging material Ft downstream.

  The supply device 1 for the packaged product P is a supply conveyor including an endless chain 12 to which pusher attachments 11 that push and convey the rear portion of the packaged product P are attached at predetermined intervals. The endless chain 12 is wound around sprockets 14 and 14 disposed at front and rear ends in the transport direction, and the rotation output of the supply conveyor drive servo motor SM1 is transmitted to the downstream sprocket 14 via a power transmission mechanism. The sprocket 14 is driven to rotate. Since the endless chain 12 meshes with the teeth of the sprocket 14, the endless chain 12 is also driven by the rotation of the sprocket 14 (see, for example, paragraphs 03 and 23 of Patent Document 2). In the supply device 1, the pusher attachment 11 conveys the packaged product P while pushing it, and feeds the packaged product P into the cylinder making machine 22. In the cylinder making device 22, the strip-shaped packaging material Fw is formed in a substantially closed curved shape, and therefore, on the outlet side of the cylinder making device 22, the packaged product P is placed inside the substantially closed curved packaging material. It is sent out together with the packaging material. The supply device 1 includes a supply origin sensor 10 that detects the pusher attachment 11.

  FIG. 8 is a diagram illustrating an example of a box motion locus of a heater block of an end seal device used in a horizontal bag making filling and packaging machine. Referring to FIGS. 1 and 8, the end seal device 3 includes a pair of heater blocks 31a and 31b that are vertically opposed to each other with the transfer path of the tubular packaging material Ft interposed therebetween. While moving in the transfer direction (horizontal direction) at the same speed as the transfer speed of the tubular packaging material Ft with the tubular packaging material Ft sandwiched between the positions indicated by 31a 'and 31b', the tubular shape The packaging material Ft is end-sealed by heat sealing, the cutter 33 built in the heater block 31a is protruded toward the heater block 31b, and the center portion of the end seal portion Se is cut. It retreats away and repeats the revolving motion that abuts against each other and moves horizontally. A system of the end seal device in which the heater blocks 31a and 31b move like the loci 32a and 32b is referred to as a box motion system (see, for example, paragraphs 02 to 03 of Patent Document 3).

  In the pair of upper and lower heater blocks 31a and 31b, the upper heater block 31a is provided with a through hole 34 for incorporating the cutter 33, and the lower heater block 31b is penetrated to receive the protruding cutter 33. A hole 35 is provided. The cutter 33 built in the upper heater block 31a is projected and retracted by an actuator such as an air cylinder located on the upper part of the heater block 31a. The cutter 33 projects during heat sealing, and retracts otherwise. It is. Further, the heater blocks 31a and 31b are provided with a heater for heating in order to heat seal the film.

  In the box motion type end seal device 3, the upper and lower heater blocks 31a and 31b are revolved using a servo motor and a cam, and the heater blocks 31a and 31b are moved up and down without using a cam. A plurality of drive motors such as a drive motor SM3A for opening and closing and a drive motor SM3B for moving forward and backward are provided, and motion is synthesized by operating each of these drive motors at an appropriate timing. There is one that revolves 31b (see paragraph 23 and paragraph 24 of Patent Document 4. Refer to Patent Document 5 for a method using a plurality of drive motors).

  FIG. 9 is a perspective view of the packaging material showing a state in which a part is drawn out from the packaging material wound on the roll. As shown in FIG. 9, a printed pattern M is printed on the belt-like film Fw at an interval corresponding to the bag length L, and a registration point which is a reference point of the bag length L is formed on the side edge portion. A mark RM is printed. The film feeding apparatus 2 includes a mark sensor 20 (FIGS. 1 and 2) that detects a registration mark RM. The end seal device 3 includes an end sealer origin sensor 30 (FIGS. 1 and 2) that detects the center position of the most distant and horizontal movement that will be occupied when the heater blocks 31a and 31b are stopped. Upon receiving signals from the supply origin sensor 10, the mark sensor 20, and the end sealer origin sensor 30, the control device 4 controls the supply conveyor drive servomotor SM1 of the supply device 1 and the paper feed roller 21 of the film feed device 2. Servo motor SM2A for feeding film, SM2B for feeding film for driving paper drawing roller 23, SM2C for feeding film for driving center sealer 24, and heater blocks 31a and 31b for moving up and down Drive control with timing of the drive motor SM3A and the drive motor SM3B for moving forward and backward is performed, and the devices 1 to 3 are operated in synchronization with each other while maintaining a predetermined phase difference.

  The control device 4 has a storage device 5 for storing the operation state (various setting states) of the horizontal bag making filling and packaging machine, and an operation capable of setting the operation state of the packaging machine and displaying the operation state. -It is connected with the display part 6 and the alerting | reporting apparatus 7 which alert | reports to the effect that the operator will check and monitor the state of a packaging material at the time of abnormality of each apparatus 1-3. When the packaging machine is operated, the control device 4 exchanges information with the storage device 5, the operation / display unit 6 or the notification device 7 individually or between each other. When manufacturing a pillow bag package using a horizontal bag making filling and packaging machine, operate the operation / display unit 6 to set basic settings such as the length of the bag to be manufactured in the machine, It is necessary to adjust the phase difference among the feeding device 2, the end seal device 3, and the feeding device 1. The notification by the notification device 7 can be performed by one or a combination means such as a buzzer, a message, and a warning light.

  In the initial state, the supply device 1, the film feeding device 2, and the end seal device 3 are stopped at their respective reference points. The stop position of the film feeding device 2 is a position where the mark sensor 20 has detected the registration mark RM printed on the belt-like packaging material Fw, and the stop position of the end seal device 3 is the farthest from the heater blocks 31a and 31b. In addition, the end sealer origin sensor 30 that detects the position in the center of the horizontal movement is turned on, and the stop position of the supply device 1 is the position where the supply origin sensor 10 that detects the pusher attachment 11 is turned on. For example, when trying to manufacture a pillow package Bp in which a packaged product P as shown in FIG. 10 is wrapped inside a bag using the belt-like film Fw shown in FIG. It is necessary to adjust the phase difference.

  When a bag is manufactured only by setting the length L of the bag, for example, the state is as shown in FIG. This indicates that the printed pattern M is deviated even when the bag length L is normal because the phase difference between the film feeding device 2 and the end seal device 3 is not appropriate. In this case, the position of the printed pattern M is adjusted by adjusting the phase difference between the film feeding device 2 and the end seal device 3. Specifically, in the film feeding device 2, an adjustment is made to advance or delay the phase of the film feeding device 2 with respect to the end seal device 3 by providing an offset with respect to the position where the mark sensor 20 detects the registration mark RM. Do.

  Similarly, it is necessary to adjust the phase difference between the film feeding device 2 and the supply device 1 of the packaged product P. When the packaged product P is supplied in a state where the phase difference between the film feeding device 2 and the supply device 1 is not adjusted, for example, a state as shown in FIG. This is because the phase difference between the film feeding device 2 and the supply device 1 is not appropriate, so that the packaged product P to be supplied is supplied even if the bag length L is normal and the position of the printed pattern M is normal. This indicates that the positional relationship between the packaging material and the packaging material is shifted. In this case, the position of the packaged product P is adjusted by adjusting the phase difference between the film feeding device 2 and the supply device 1. Specifically, an adjustment is made to advance or delay the phase of the supply device 1 with respect to the film feeding device 2 by providing an offset from the position where the supply origin sensor 10 of the supply device 1 detects the pusher attachment 11.

  As described above, the basic set value is set in the horizontal bag making filling and packaging machine, and by adjusting the phase difference among the feeding device 1, the film feeding device 2 and the end seal device 3, the horizontal bag making filling packaging As shown in FIG. 10, the machine is in a state in which a normal pillow package Bp in which the packaged product P is correctly accommodated can be manufactured.

  By the way, when the operation is suspended in the horizontal bag making filling and packaging machine, it is preferably set to stop at a position where the article to be packaged P is delivered from the supply device 1 to the cylindrical packaging material Ft. This is an important point in using the empty bag prevention function in the horizontal bag making filling and packaging machine. As disclosed in Patent Document 6, when the continuous supply of the packaged product P in the supply device 1 is interrupted, the empty bag prevention function continues only the operation of the supply device 1, and the film feeding device 2 and the end This is a function of stopping the operation of the sealing device 3 to prevent an empty bag from being made. FIG. 13 is a diagram for explaining a state when the empty bag prevention function is activated in the horizontal bag making filling and packaging machine. As shown in FIG. 13 (a), when the stop position of the supply device 1 is a position where the article to be packaged is delivered to the tubular packaging material Ft, the empty bag prevention function of the horizontal bag making filling packaging machine is activated. Furthermore, since the film feeder 2 and the end seal device 3 are decelerated and stopped after the pusher attachment 11 finishes transferring the packaged product P onto the cylindrical packaging material Ft, the space between the packaged products P in the cylindrical packaging material Ft. Distances i, b, and c are equal. Therefore, it is possible to prevent a situation in which the packaged material P is not supplied from the supply device 1 to the cylindrical packaging material Ft at regular intervals.

  However, as a result of adjusting the phase difference among the film feeding device 2, the end seal device 3, and the supply device 1, the stop position of the supply device 1 is changed from the supply device 1 to the cylindrical packaging material as shown in FIG. Other than the position where the article to be packaged P4 is delivered to Ft, for example, a part of the article to be packaged P may be in a state where it enters the tubular packaging material Ft. When the empty bag prevention function is activated in a state where the stop position of the supply device 1 is at a position other than the position where the package P is delivered from the supply device 1 to the cylindrical packaging material Ft, the film feeding device 2 and the end seal device 3 On the other hand, since the supply device 1 continues to operate while the pusher attachment 11 is transporting the packaged product P, the supply device 1 moves at a constant speed. It will be different. That is, the distances a and b between the articles to be packaged P in the cylindrical packaging material Ft are equal, but the articles to be packaged P4 are fed into the cylindrical packaging material Ft by the pusher attachment 11b of the supply device 1 where the operation continues. The distance C between the packaged products P3 and P4 is shorter than the distances A and B.

  When the stop position of the supply device 1 has become a position other than the position where the packaged material is delivered from the supply device 1 to the tubular packaging material Ft, the distance between the packaged products P as described above is different. In order to avoid this, the end for detecting the position where the heater blocks 31a and 31b are farthest apart and at the center of the horizontal movement while maintaining the phase difference among the film feeding device 2, the end seal device 3 and the feeding device 1. By providing an offset from the position where the sealer origin sensor 30 is turned on, adjustment is made such that the stop position of the end seal device 3 is advanced or delayed, so that the stop position of the supply device 1 is changed.

  However, by adjusting the stop position of the end seal device 3 to advance or delay, the stop position of the end seal device 3 is in a state where the upper and lower heater blocks 31a 'and 31b' are closed as shown in FIG. May end up. In this case, there is a problem that the tubular packaging material Ft is in a state of being sandwiched and pressed by the end seal device 3 for a long time, so that the film is thermally transformed to become a normal packaging body.

  In order to cope with this, for example, the technique proposed in Patent Document 7 (particularly, FIG. 3) is such that when the supply of the package to be supplied to the cylindrical packaging material is interrupted every predetermined interval, Is designed to temporarily stop the film supply and stop the end seal device, and when it is determined that the stop timing of the end seal device coincides with the timing when the rotary heater block meshes, By moving the entire sealing device by a predetermined distance forward or backward, changing the distance from the position where the package is delivered from the supply device to the meshing position of the heater block, and rotating the heater block by a predetermined angle, The heater block is set not to stop at the meshing position.

  Further, the technique proposed in Patent Document 8 is a box motion type end seal device, which includes a plurality of drive motors such as a drive motor for moving the heater block up and down and a drive motor for moving forward and backward. The heater block is revolved by operating each of the drive motors at an appropriate timing, and the horizontal moving center can be repositioned back and forth within the horizontally movable range. The distance from the position where the package is delivered to the meshing position of the heater block is changed so that the heater block can stop at the open position where there is no thermal effect on the film.

  As described above, according to the techniques proposed in Patent Document 7 and Patent Document 8, the distance from the position where the package is delivered from the supply device to the meshing position of the heater block is changed. The stop position can be adjusted so that the heater block does not stop at the meshing position. However, the following new problems arise. In other words, when the distance from the position where the packaged article is delivered from the supply device to the meshing position of the heater block is changed, if a device with a fixed position is attached upstream or downstream of the end seal device, The positional relationship between the sealing device and the accessory device also changes, resulting in inconvenience. As an example of the attached device whose position is fixed, for example, there is a product restraining belt device as shown in Patent Document 9 and Patent Document 10 on the upstream side of the end seal device.

  FIG. 14 is a side view showing an example of a horizontal bag making filling and packaging machine provided with its position fixed upstream of the end seal device. As shown in FIG. 14, the product restraining belt device 9 is configured by arranging a large number of sponge blocks 9 a on a wound body, and a cylindrical packaging material Ft is interposed between an article transfer placement surface such as a table. It is auxiliary feeding means such as an endless belt that can hold a lightweight article P such as a biscuit and can transport it toward the downstream side in the held state. The article P supplied into the cylindrical packaging material Ft by the feeding means is stably downstream so as not to cause positional displacement in the cylindrical packaging material Ft even when the packaging material is stopped or started. (Refer to paragraph 04 to paragraph 06 of Patent Document 8). The product restraining belt device 9 is preferably installed until just before the operation area of the end seal device 3 because it is desirable to hold the article until just before the end seal device 3 for that purpose.

  However, following the techniques described in Patent Document 7 and Patent Document 8, if the meshing position of the heater blocks 31a and 31b is moved to the downstream side of the feed of the cylindrical packaging material Ft, the end seal device 3 and the product restraining belt device are moved. 9, the area outside the product restraining action range is expanded. Further, when the meshing position of the heater blocks 31a and 31b is moved to the upstream side of the feeding of the cylindrical packaging material Ft, the movement of the meshing position of the heater blocks 31a and 31b may be limited due to the presence of the product restraining belt device 9. is there. In order to solve this problem, it is conceivable that the product restraining belt device 9 is configured to be movable in accordance with the meshing positions of the heater blocks 31a and 31b. Then, a large and complicated movement for the product restraining belt device 9 is possible. A mechanism is required. Further, as shown in Patent Documents 7 and 8, even if the meshing positions of the heater blocks 31a and 31b are changed, the adjustment range of the meshing positions of the heater blocks 31a and 31b is limited, and the empty bag There is an area where the prevention function cannot be given.

  Patent Document 11 and Patent Document 12 describe ones in which the heater block of the end seal device is retracted to a position separated from the meshing position and then returned to the synchronous operation. The one disclosed in Patent Document 11 is a horizontal bag making filling and packaging machine equipped with a rotary cutter type end seal device, and as a countermeasure when biting into the end seal is detected, the end sealer is reversed and used as a reference. The film is rested once in a state of being retracted to a position (a position away from the meshing position), the film preliminary supply is continued, and the end seal device is returned to the synchronous operation in the next cycle. Further, the one disclosed in Patent Document 12 relates to a rotary horizontal sealer of a vertical pillow packaging machine for bag-filling a fluid such as a liquid. When the horizontal seal roll is stopped, the stop position is originally engaged. There is a control means for stopping the horizontal seal roll in a state where the seal plate of the horizontal seal roll does not pinch the film, and the film is placed between the separated seal plates when the filling and packaging machine is started. The film is transferred to start the flow of the film, and when the transfer speed of the film reaches a predetermined speed, the horizontal sealing roll starts to rotate and performs horizontal sealing.

Japanese Patent Publication No.7-110645 JP 2009-203056 A JP 2006-31470 A JP 2010-105669 A JP 07-291234 A JP-A-01-267136 Japanese Utility Model Publication No. 03-029408 Japanese Patent No. 4497363 JP 2001-199403 A JP 2007-062823 A Japanese Patent Laid-Open No. 04-044913 Japanese Patent No. 3036582

  Therefore, in the horizontal bag making filling and packaging machine, the position of the end seal device that performs box motion is fixed relative to the packaging machine, and the end seal device stops at the meshing position with respect to the packaging material according to the function of the empty bag prevention function, etc. Sometimes, there is a problem to be solved in that the stop position of the heater block of the end seal device is set to a predetermined open position that is not a meshing position. Furthermore, when the operation of the end seal device is resumed, there is a problem to be solved in that the heater block is returned to the locus of the box motion.

  An object of the present invention is to set the stop position of the heater block when the end seal device that performs the box motion stops to a predetermined open position that is not the meshing position, so that the heater block continues to sandwich the film with a simple configuration. It is an object of the present invention to provide a horizontal bag-filling and packaging machine that can prevent thermal transformation from occurring in the film. Furthermore, the empty bag prevention function is maintained, the heater block is returned to the locus of the box motion when the operation of the end seal device is resumed, and the relative position is determined upstream or downstream with respect to the end seal device. It is an object of the present invention to provide a horizontal bag making and filling machine that does not interfere with the operation of the apparatus.

  In order to solve the above-described problems, a horizontal bag making and packaging machine according to the present invention includes a feeding device that feeds a packaging material, a first servo motor for moving up and down heater blocks arranged up and down, and the heater block. A second servo motor for moving the servo block forward and backward, and when each servo motor is operated at an appropriate timing, the heater block is revolved and the heater blocks are in the meshing position. Horizontal type bag making comprising a box motion type end seal device that sandwiches the packaging material and heat seals, a supply device that supplies a product to be packaged in the packaging material, and a control device that controls the devices. In the filling and packaging machine, the control device is a stop position occupied by the end seal device when the empty bag prevention function is activated or when the packaging machine is stopped. In response to the meshing position of the heater block, the first servo motor is commanded to open the heater block at least in the vertical direction and shift to a retracted position separated from the packaging material. Yes.

  According to this horizontal bag making and packaging machine, the control device is configured such that the stop position occupied by the end seal device when the empty bag prevention function is activated or when the packaging machine is stopped is the meshing position where the heater block sandwiches the packaging material. In response to the command, only the first servo motor is commanded, or the first servo motor and the second servo motor are commanded, and the heater block is opened at least in the vertical direction to be separated from the packaging material. Since it moves to the retreat position, the heater block that sandwiches the packaging material is opened at least in the vertical direction, and there is no inconvenience that the packaging material is overheated and melted or thermally transformed. .

  In addition, when the end seal device stops or stops in response to the stop position of the end seal device being the meshing position of the heater block, the control device sets the sealing time determined after the stop or stop operation ends. After the elapse of time, only the first servo motor for moving the heater block up and down can be commanded to shift the heater block to the open state. In this case, sufficient heat sealing can be performed for the packaging material up to the position where the heater block is engaged.

  Further, in this horizontal bag making and filling machine, the retreat position is a position on the revolution track (box motion trajectory) or a position other than the revolution trajectory (box motion trajectory) as long as it is a position away from the packaging material. For example, the position where the stopped position occupies in the feeding direction of the packaging material is the position occupied by the stopped position, and the coordinate in the vertical direction of the heater block is the position occupied when opened most on the locus of the box motion. The position can be determined.

  Further, in this horizontal bag making filling and packaging machine, when the retracted position is a position on the revolution trajectory (box motion trajectory), the control device responds to the operation restart or the operation start of the end seal device, From the calculation, it is possible to restart the operation of the first servo motor and the second servo motor at the timing when the retracted position on the locus of the box motion is reached. Since the retracted heater block occupies the retracted position on the box motion trajectory, when the end seal device resumes operation or starts operation, the heater block reaches the retracted position on the trajectory of the box motion in the calculation. By restarting the operation of the first servo motor and the second servo motor at the timing, the operation of tracing the box motion trajectory from the retracted position can be restarted or started.

  Further, in this horizontal bag making filling and packaging machine, when the retracted position is a position other than the position on the revolution trajectory (box motion trajectory), the control device responds to the operation restart or the operation start of the end seal device. The position at which the heater block crosses the locus of the box motion by operating the second servo motor while stopping the servo motor of 1 or operating the first servo motor while stopping the second servo motor. The operation of the first servo motor and the second servo motor can be resumed at the timing when the heater block reaches the position on the locus of the box motion in the calculation. That is, when the heater block occupies a retreat position other than the position on the box motion locus, when the end seal device resumes operation or starts operation, first, only the second servo motor for moving forward and backward or the first Only when the servo motor is operated, the heater block moves to the position where it intersects with the box motion trajectory. At the same timing that the robot moves to the position that intersects the locus of the box motion, the operation of the first servo motor and the second servo motor is restarted, and the heater block combines the outputs of both servo motors. By doing so, it is possible to return to the operation of following the locus of the box motion. When the end seal device resumes operation or starts operation, when only the second servo motor is operated, the heater block can return to the operation following the locus of the box motion at some position when moving forward and backward. When only one servo motor is operated, the heater block can return to the position on the locus of the box motion when it is further opened in the vertical direction if it does not intersect with the locus of the box motion before reaching the retracted position. When the box motion trajectory is crossed before reaching the position, it can return to the position on the box motion trajectory when moving in the up and down direction.

Further, in this horizontal bag making filling and packaging machine, when the retracted position is a position other than the position on the revolution trajectory (box motion trajectory), the control device responds to the operation restart or the operation start of the end seal device. While the servo motor 1 is stopped, the second servo motor is operated to bring the heater block to the maximum forward position in the front-rear direction, and then the second servo motor is operated to move the heater block backward. Can be moved to a position on the locus of the box motion. By making the heater block reach the maximum forward position in the front-rear direction once, it becomes easy to perform control to return to the operation that follows the locus of the box motion thereafter.

Further, in this horizontal bag making filling and packaging machine, the retreat position can be a position where the controller instructs only the first servo motor to open the heater block in the vertical direction from the engagement position and reach it. The retreat position is a position where the control device commands both the first servo motor and the second servo motor to open the heater block in the vertical direction from the mesh position and move it in the front-rear direction to reach it. It can be. In any case, the heater block is opened at least in the vertical direction from the meshing position, and it is possible to prevent thermal transformation from occurring in the packaging material due to sandwiching the packaging material for a long time.

Further, in the horizontal bag making and filling machine, the retreat position can be a position occupied when the control device moves the heater block in the vertical direction and the heater block is opened most. In this case, the heater block opens most vertically in the vertical direction from the meshing position.For example, even when the packaging material swells due to the accommodation of the packaged object, the contact with the packaging material is most reliably achieved. Can be prevented.

  Since the horizontal bag making and filling machine according to the present invention is configured as described above, even when the stop position of the end seal device becomes the meshing position of the heater block, the end seal device is stopped (when the stop state is stopped). In addition, by opening the heater block in the vertical direction only by operating at least the first servo motor, it is possible to prevent thermal transformation caused by the heater block engaging with the film for a long time. . Therefore, by simply selecting one servo motor, or when selecting both servo motors, the operation mode is simplified without complicated behavior, thereby preventing thermal transformation of the packaging material with a simple configuration. In addition, there is no region where the empty bag prevention function cannot be provided, and the distance from the position where the package is delivered from the supply device to the meshing position of the heater block does not change. When a device with a fixed position is provided on the upstream side or the downstream side, it is possible to realize a horizontal bag making filling and packaging machine including an end seal device that does not interfere with the operation of such a device.

FIG. 1 is a side view showing an embodiment of a horizontal bag making and filling machine according to the present invention. FIG. 2 is a plan view of the horizontal bag making filling and packaging machine shown in FIG. FIG. 3 is a motion mechanism diagram of an end seal device used in the horizontal bag making filling and packaging machine shown in FIGS. 1 and 2. FIG. 4 is an explanatory view of the operation of the end seal device used in the horizontal bag making filling and packaging machine according to the present invention. FIG. 5 is a block diagram of a control device for controlling the end seal device used in the horizontal bag making and filling machine according to the present invention. FIG. 6 is a flowchart showing an example of control for the operation of the end seal device shown in FIG. FIG. 7 is an operation explanatory view of another embodiment of the end seal device used in the horizontal bag making filling and packaging machine according to the present invention. FIG. 8 is a diagram illustrating an example of a box motion locus of a heater block of an end seal device used in a horizontal bag making filling and packaging machine. FIG. 9 is a perspective view of the packaging material showing a state in which a part is drawn out from the packaging material wound on the roll. FIG. 10 is a perspective view showing a normal example of a bag package to be manufactured by a horizontal bag-filling and packaging machine. FIG. 11 is a perspective view showing an example of a bag package having a printed pattern shift. FIG. 12 is a perspective view illustrating an example of a bag package in which the positional relationship between the supplied packaged goods and the film is shifted. FIG. 13 is a diagram for explaining a state when the empty bag prevention function is activated in the horizontal bag making filling and packaging machine. FIG. 14 is a side view showing an example of a horizontal bag-making filling and packaging machine in which a product restraining belt device is provided with a position fixed upstream of the end seal device.

  Embodiments of a horizontal bag making and filling machine according to the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a side view showing an embodiment of a horizontal bag making and filling machine according to the present invention (hereinafter abbreviated as “packing machine” unless otherwise specified), and FIG. 2 is a plan view of the packaging machine shown in FIG. FIG. In the present packaging machine, since the basic structure has already been described, detailed description thereof will be omitted except for the control device 4.

  The horizontal bag making filling and packaging machine according to the present invention is a horizontal bag making filling and packaging machine provided with a multi-motion type end seal device in which a heater block is movable in the vertical direction and the front-rear direction, as shown in FIG. The control device 4 receives signals from the supply origin sensor 10, the mark sensor 20 and the end sealer origin sensor 30 and receives a feed conveyor drive servo motor SM 1 of the supply device 1 and a paper feed roller of the film feed device 2. 21, film feeding servomotors SM2A, SM2B, SM2C for driving the paper drawing roller 23 and the center sealer 24, a driving motor SM3A for moving the heater blocks 31a, 31b up and down, and a driving for moving forward and backward. Drive control with the timing of the motor SM3B is performed, and the devices 1 to 3 are mutually connected. Synchronously operating while maintaining a predetermined phase difference. When the packaging machine is operated, the control device 4 exchanges information with the storage device 5, the operation / display unit 6 or the notification device 7 individually or between each other. When a pillow bag package is to be manufactured using the packaging machine, basic setting values such as the length L of the bag to be manufactured by inputting from the operation / display unit 6 are set in the machine, and the film feeder 2 The phase difference between the end seal device 3 and the supply device 1 is adjusted. The control device also activates an empty bag prevention function in response to the detection of the interruption of the supply of the packaged items to prevent the occurrence of empty bags. In the end seal device 3, the upper and lower heater blocks When 31a, 31b stops (pauses) at the meshing position with respect to the packaging material, control is performed to open and retreat up and down, and control of restarting the packaging machine thereafter.

  In the initial state, the supply device 1, the film feeding device 2, and the end seal device 3 are stopped at their respective reference points. The stop position of the film feeding apparatus 2 is a position where the mark sensor 20 has detected the registration mark RM printed on the belt-shaped packaging material Fw. The stop position of the end seal device 3 is a position where the end sealer origin sensor 30 that detects the heater block 31a when the heater blocks 31a and 31b are farthest apart and occupy the center of the horizontal movement is turned on. The stop position of the supply apparatus 1 is a position where the supply origin sensor 10 that detects the pusher attachment 11 is turned on.

  FIG. 3 shows a motion mechanism diagram of the end seal device used in the packaging machine shown in FIGS. 3A is a side view of the end seal device, FIG. 3B is a left front view of FIG. 3A, and FIG. 3C is a right front view of FIG. The end seal device 3 shown in FIG. 3 includes upper and lower heater blocks 31a and 31b arranged to face each other in the vertical direction. The heater blocks 31a and 31b are driven in synchronization with the upper and lower opening and closing directions. When the heater blocks 31a and 31b are closed most, the tubular packaging material is sandwiched in a pressurized state, and the portions of the sandwiched packaging material are heated and welded. End seal portions Se and Se are formed. The upper end sealer 31a incorporates a cutter 33 in a state of being accommodated in the through hole 34, and the lower end sealer 31b is formed with a through hole 35 into which the cutter 33 enters at a position corresponding to the cutter 33. Has been. The upper end sealer 31a is provided with a cutter driving device 36 that projects the cutter 33 toward the lower end sealer 31b. The cutter drive device 36 is composed of, for example, a known air actuator, and operates in accordance with the operation of the upper and lower end sealers 31a and 31b, that is, the closing operation of both the end sealers 31a and 31b. It protrudes toward the side end sealer 31b and cuts the cylindrical packaging material. The cutter 33, the through hole 34, and the cutter driving device 36 constitute a cutter device incorporated in the end seal device 3.

  The end sealers 31 a and 31 b are arranged to be slidable in the vertical direction with respect to the support block 45. That is, the support block 45 holds the slide shafts 46a and 46b so that the slide shafts 46a and 46b can slide in the vertical direction at both ends in the left-right direction. 47a and the lower end block 47b. The upper heater block 31a and the cutter driving device 36 are disposed on the lower side and the upper side, respectively, in the upper end block 47a. An intermediate block 48 is slidably supported on the slide shafts 46 a and 46 b in the intermediate region in the longitudinal direction, and a lower heater block 31 b is attached to the upper side of the intermediate block 48.

  The support block 45 is provided with a vertical drive servomotor SM3A for opening and closing the heater blocks 31a and 31b in the vertical direction. A lever 51 is attached to the output shaft 50 of the vertical drive servomotor SM3A. One end of the lever 51 is slidably connected to the upper bracket 53a via the upper link 52a, and the upper bracket 53a. Are coupled to the intermediate block 48. Further, the other end portion of the lever 51 is pivotably connected to the lower bracket 53b via the lower link 52b, and the lower bracket 53b is connected to the lower end block 47b. Therefore, when the vertical drive servo motor SM3A is driven and the output shaft 50 is rotated, the lower link 52b, the lower end block 47b, the slide shafts 46a and 46b, and the upper end block 47a are moved according to the rotation direction. The upper heater block 31a is opened and closed, and the lower heater block 31b is opened and closed via the upper link 52a and the intermediate block 48. That is, the upper and lower heater blocks 31a and 31b perform an opening / closing operation synchronized with each other with respect to the cylindrical packaging material fed in the horizontal direction by the operation of the vertical driving servo motor SM3A as the opening / closing drive source. .

  In the end seal device 3, the heater blocks 31a and 31b are slidable in the front-rear direction (paper feeding direction of the packaging material) perpendicular to the opening / closing direction. That is, the support block 45 of the end seal device 3 is slidably supported by the front and rear guides 55a and 55b supported by the fixed frame of the machine on the left and right sides thereof. As shown in FIG. 3A, the fixed frame is provided with a servo motor SM3B as a drive source for front and rear drive, and an arm 58 is attached to the output shaft 57 of the front and rear drive servo motor SM3B. The tip of the arm 58 and the bracket 60 of the support block 45 (which may be a vertical drive servomotor SM3A) are connected via a link 59. Therefore, when the front / rear drive servomotor SM3B is driven, the support block 45 is guided by the front / rear guides 55a and 55b via the arm 58, the link 59 and the bracket 60 in accordance with the rotational direction thereof. Driven. That is, the upper and lower heater blocks 31a and 31b perform a horizontal operation parallel to the feeding direction of the cylindrical packaging material by driving the front and rear drive servomotor SM3B.

  The vertical drive servo motor SM3A for opening and closing the upper and lower heater blocks 31a and 31b and the front and rear drive servo motor SM3B for driving the end seal device 3 together with the support block 45 in the front and rear direction are the cylinders of the upper and lower heater blocks 31a and 31b. In order to perform the opening / closing operation to the wrapping material and the horizontal operation parallel to the feeding direction of the tubular wrapping material, they can be controlled separately (independently) by the control device of the wrapping machine. Specifically, a section in which the upper and lower heater blocks 31a and 31b move horizontally at a constant speed with the cylindrical packaging material can be set by control of the front and rear drive servomotor SM3B. It is possible to set a section in which the heater blocks 31a, 31b start to approach each other and stop halfway until they are completely closed.

  FIG. 4 shows the operation of the end seal device used in the packaging machine according to the present invention as the operation of the heater block. (A) of FIG. 4 has shown the mode of operation | movement of the heater block of an end seal device when a packaging machine carries out normal operation | movement. 4 (a) and 4 (b) show the first half operation (stop operation 1) and the second half operation when the packaging machine performs a stop operation (including a case where the package is stopped by the empty bag prevention function). Stop operation 2) is shown. Moreover, (c) and (d) of FIG. 4 have shown the operation | movement of the first half (operation | movement restart 1) and the operation | movement of the latter half (operation | movement restart 2) when the packaging machine which has stopped restarts operation | movement.

  FIG. 4A shows the operation of the upper and lower heater blocks 31a and 31b provided in the end seal device 3 when the packaging machine is operating normally. In the figure, V1 to V3 indicate characteristic height positions occupied in the vertical direction when the upper heater block 31a revolves. Although the height position of the lower heater block 31b in the vertical direction is not clearly shown, it is clear that it occupies positions V1 to V3 symmetrical in the vertical direction (the same applies to (b) to (e) in FIG. 4). ). That is, for the upper and lower heater blocks 31a and 31b, V1 is the opening height position farthest from the meshing position, V2 is the height position when it is at the maximum reverse position in the forward / reverse direction, and V3 is the meshing position. The height position when it is in is shown.

  In the figure, H1 to H5 and HS denote characteristic horizontal positions that occupy the forward and backward movement directions when the upper and lower heater blocks 31a and 31b revolve. For the upper and lower heater blocks 31a and 31b, H1 is the horizontal position when it is at the maximum reverse position in the forward / reverse direction, H2 is the horizontal position when meshing starts, and H3 is the most vertically open from the meshed state. H4 indicates the horizontal position, H4 indicates the horizontal position when the meshing ends and the opening starts, and H5 indicates the horizontal position when it is at the maximum forward position in the forward / backward direction. HS represents the horizontal position occupied by the upper and lower heater blocks 31a and 31b when the end seal device 3 is stopped (including pause).

  When the upper and lower heater blocks 31a and 31b revolve, the upper and lower heater blocks 31a and 31b are at the maximum reverse position and at an intermediate height as shown by the arrows from the position indicated by (H3, V1). Position (H1, V2), positions at which the upper and lower heater blocks start to mesh with each other (H2, V3), positions at which the upper and lower heater blocks have finished meshing (H4, V3), and the maximum forward position with an intermediate height A box motion operation (circulation operation) is performed to return to the initial position (H3, V1) through the position (H5, V2).

  As shown in FIG. 4B, the end seal device 3 occupies when the empty bag prevention function of the packaging machine is activated, or when the packaging machine is turned off or stopped for some reason. It is assumed that the stop position is a meshing position where the upper and lower heater blocks 31a and 31b are meshed with each other, that is, a position (HS, V3) where the meshing is started and moved in the packaging material feeding direction for a while. As shown in FIG. 4C, the control device 4 operates the heater block only in the opening / closing direction in response to the stop. That is, the control device 4 instructs the vertical drive servomotor SM3A (FIG. 3) which is the first servomotor for opening and closing to open the upper and lower heater blocks 31a, 31b in the vertical direction (HS, V1). In this case, it is preferable to move the heater blocks 31a and 31b in the direction of opening in the vertical direction after a predetermined sealing time has elapsed after stopping at the position (HS, V3). By doing in this way, a heater block can be opened, after heat-sealing is completed to the meshed packaging material.

  Next, after the upper and lower heater blocks 31a and 31b have moved to the retracted positions (HS, V1), for example, when a command for restarting operation is issued from the operation / display unit 6, the control device 4 displays FIG. As shown in FIG. 3D, as the operation resumption 1, only the operation of the front / rear drive servomotor SM3B (FIG. 3) as the second servomotor is resumed. The heater blocks 31a and 31b move to the maximum advance position (H5, V1) by performing only the horizontal movement in the feeding direction of the packaging material while maintaining the height position V1. The maximum forward position (H5, V1) occupied by the heater blocks 31a and 31b is the position (horizontal direction) occupied when reaching the most forward side on the locus of box motion taken by the heater blocks 31a and 31b in the feed direction of the packaging material. Of the heater blocks 31a and 31b, and the position occupied when the heater blocks 31a and 31b are most opened on the path of the box motion (height V1 in the vertical direction).

  Next, as shown in FIG. 4 (e), the heater blocks 31a and 31b occupying the maximum advance position (H5, V1) are moved horizontally in the direction opposite to the feeding direction of the packaging material, and the horizontal intermediate position ( H3, V1). After moving to the horizontal intermediate position (H3, V1), the heater blocks 31a, 31b are moved horizontally by the operation of the front / rear drive servomotor SM3B, and thereafter the position on the locus of the box motion where the vertical movement can be resumed in calculation. When reaching (H3, V1), or when the heater blocks 31a, 31b are moved to the horizontal intermediate position (H3, V1), the calculated vertical position can be resumed (H3, V1). At the timing reached, the operation of the vertical drive servomotor SM3A, which is the first servomotor for opening and closing, is resumed. The upper and lower heater blocks 31a and 31b provided in the end seal device move in the vertical and front / rear direction by driving the vertical drive servomotor SM3A and the front / rear drive servomotor SM3B, and are packaged in FIG. Performs the action shown as the action when the machine is in normal operation.

  As described above, according to this horizontal bag making filling and packaging machine, when the packaging machine is stopped or when the end seal device 3 is stopped or stopped, the heater blocks 31a and 31b are placed on the cylindrical packaging material for a long time. Since it is possible to prevent thermal transformation caused by meshing, there is no region where the empty bag prevention function cannot be provided. In addition, since the distance from the position at which the article to be packaged is delivered from the supply device 1 to the meshing position of the heater blocks 31a and 31b does not change, the restraining conveyor whose position is fixed upstream or downstream of the end seal device 3 When the attached device as described above is provided, the end seal device 3 that does not hinder the operation of the attached device can be realized with a simple configuration.

  FIG. 5 is a block diagram of a control device for controlling the end seal device used in the horizontal bag making and filling machine according to the present invention. In FIG. 5, signal lines in the control device 4 are for explaining the main connection relationship (control signal flow) in the present invention, and do not show a strict connection relationship. The control device 4 includes a supply origin sensor 10 for the supply device 1, a mark sensor 20 for the registration mark RM of the packaging material, an end sealer origin sensor 30 for the end seal device 3, and a package in the supply device 1 (not shown). In response to an input of a shortage sensor 8 that detects that an item is missing (the presence or absence of a packaged product P to be transported) and a detection signal or command signal from the operation / display unit 6, As shown in FIG. 4, the supply device 1 is a supply conveyor drive servomotor SM1, the film feed device 2 is a film feed servomotor SM2A, SM2B, SM2C, and the end seal device 3 is a vertical drive servomotor SM3A. A control signal is output to the front-rear drive servomotor SM3B. Further, the control device 4 is connected to a storage device 5 that stores and reads out data necessary for controlling the operation of the packaging machine. And a signal for reporting a warning or the like is output to the notification device 7.

  Detection signals from the supply origin sensor 10, the mark sensor 20, and the end sealer origin sensor 30 are input to the initial phase difference adjustment unit 70 and the normal operation control unit 71. The initial phase difference adjusting unit 70 operates for the feeding device control unit 75 and the film feeding device control unit, and the normal operation control unit 71 operates for the feeding device control unit 75, the film feeding device control unit 76, and the end seal device control unit 77. A control signal is output, and each control unit 75 to 77 outputs a drive control signal to the corresponding servo motor. For example, when the shortage sensor 8 detects the supply interruption of the package P, the empty bag prevention function is activated, and the film feeding device 2 and the end seal device 3 of the packaging machine are in a pause state. Only the supply device 1 is operated. At this time, the stop (pause) determination unit 72 of the packaging machine determines the stop (pause) in determining whether or not the packaging machine is stopped (pause). The stop (pause) determination unit 72 is connected to the heater block stop position determination unit 73. Based on the determination of the stop (pause) determination unit 72, the heater block stop position determination unit 73 determines whether or not the heater blocks 31 a and 31 b are in the meshing position where the packaging material is meshed.

  The heater block stop position determination unit 73 is connected to an end seal device control unit 77, and more specifically, is connected to a vertical drive servo motor control unit 78 of the end seal device control unit 77. When the heater block stop position determination unit 73 determines that the position is the meshing position, the vertical drive servo motor control unit 78 outputs a control signal to the vertical drive servo motor SM3A to move the heater blocks 31a and 31b up and down. To move to the retracted position. In response to the supply recovery of the packaged item P, the operation restart determination unit 74 receives the recovery signal from the shortage sensor 8 or the command signal from the operation / display unit 6 and determines the operation restart. The operation resumption determination unit 74 is also connected to the end seal device control unit 77, and more specifically is connected to the front / rear drive servo motor control unit 79. The operation resumption determination unit 74 is based on the determination, and the front / rear drive servo An operation control signal is output to the motor control unit 79, and the front-rear drive servomotor control unit 79 outputs a front-rear drive control signal to the front-rear drive servomotor SM3B. When the heater blocks 31a and 31b return to the normal box motion trajectory through the maximum forward position (return reference position), they enter under the control of the normal operation control unit 71, and the control units 75 to 77 are respectively Normal operation control for outputting a control signal for driving to the corresponding servo motor is performed.

  FIG. 6 is a flowchart showing an example of control for the operation of the end seal device shown in FIG. When the operation of the packaging machine is started (step 1 (abbreviated as “S1”, the same applies hereinafter)), the supply timing of the packaged material P and the operation of the end seal device 3 with respect to the feeding of the packaging material (position) The phase difference) is adjusted (S2), and then the operation of the feeding device 1, the film feeding device 2 and the end seal device 3 is controlled at a predetermined timing, and a predetermined position (print pattern M or registration mark MR) of the packaging material. ), An end seal operation is performed (S3). When the operation of the packaging machine is stopped or the supply of the articles to be packaged is stopped (out of stock), the operation stop (pause) of the packaging machine is determined (S4). When the operation stop (pause) of the packaging machine occurs, it is determined whether or not the stop position of the heater blocks 31a and 31b is the meshing position (S5). When the stop position of the heater blocks 31a and 31b is not the meshing position, the operation of the packaging machine is resumed (S7). When the stop position of the heater blocks 31a and 31b is the meshing position, after a predetermined sealing time, the heater blocks 31a and 31b are opened in the vertical direction and moved to the retracted position (S6). When there is a command to resume the operation of the packaging machine (S7), the heater blocks 31a and 31b are moved to the maximum forward position (return reference position) while being opened up and down (S8). Thereafter, the heater blocks 31a and 31b are moved forward to return to positions on the normal box motion locus (S9), and thereafter, the vertical drive servomotor SM3A and the front / rear drive servomotor SM3B are driven. Return to the normal end seal operation (S3).

  In the above embodiment, when the packaging machine is stopped (paused), the upper and lower heater blocks 31a and 31b are moved up and down to the retracted position, and when the operation is started, only the horizontal movement is performed and the box is moved. When returning to the motion trajectory (in this case, it does not move in the vertical direction to sandwich the packaging material, so it is on the safe side), but when the packaging machine is stopped (paused) as shown in FIG. The upper and lower heater blocks 31a and 31b are moved away from the packaging material and moved to the retreat position existing on the box motion trajectory by combining horizontal movement and vertical movement, and the box is immediately opened from the retreat position when the operation is started. Control for returning to the locus of motion may be performed.

  Furthermore, when the upper and lower heater blocks 31a and 31b are separated from the packaging material, the heater blocks 31a and 31b may be moved to a retreat position that is not a position on the box motion trajectory to be on standby. In addition, as shown in FIG. 4, the upper and lower heater blocks 31a and 31b are driven only in the front-rear direction until the box motion trajectory is returned upon resumption of operation after retreating to the retracted position. Also in this case, depending on the setting of the retraction position, when moving up and down to the retraction position, the vertical movement direction is determined depending on whether or not the box motion trajectory is traversed, etc. It is obvious that the control for returning to the locus of the box motion may be performed only by the combination of the front-rear drive and the vertical drive. Furthermore, when returning the upper and lower heater blocks 31a and 31b from the retracted position that is not the position on the box motion trajectory onto the box motion trajectory, the upper heater blocks 31a and 31b return to the trajectory after reaching the trajectory of the box motion. The end seal device may be restarted after waiting for the timing, or the end seal device may be restarted in succession to the return motion after returning to the box motion trajectory at the calculated timing. Good.

DESCRIPTION OF SYMBOLS 1 Supply apparatus 2 Film feeding apparatus 3 End seal apparatus 4 Control apparatus 5 Storage apparatus 6 Operation / display part 7 Notification apparatus 8 Missing part sensor 9 Product restraint belt apparatus 10 Supply origin sensor 11 Pusher attachment 12 Endless chain 14 Sprocket 20 Mark sensor 21 Paper feeding roller 22 Cylinder 23 Paper drawing roller 23a, 23b Roller 24 Center sealer 24a, 24b Seal roller 30 End sealer origin sensor 31a Upper heater block 31b Lower heater block 32a, 32b Trajectory 33 Cutter 34 Through hole 35 Through hole 36 Cutter drive unit 45 Support block 46a, 46b Slide shaft 47a Upper end block 47b Lower end block 48 Intermediate block 50 Output shaft 51 Lever 52a Upper link 52b Lower link 53a Upper block Bucket 53b Lower bracket 55a, 55b Front / rear guide 57 Output shaft 58 Arm 59 Link 60 Bracket 70 Initial phase difference adjustment unit 71 Normal operation control unit 72 Stop (pause) determination unit 73 Heater block stop position determination unit 74 Operation restart determination unit 75 Supply device control unit 76 Film feed device control unit 77 End seal device control unit 78 Vertical drive servo motor control unit 79 Front / rear drive servo motor control unit SM1 Supply conveyor drive servo motor SM2A, SM2B, SM2C Film feed servo motor SM3A Servo motor for vertical drive (first servo motor)
SM3B Front / rear drive servomotor (second servomotor)
Fr Original fabric roll Fw Strip packaging material Ft Cylindrical packaging material RM Registration mark Se End seal part L Bag length P Packaged goods Bp Pillow packaging

Claims (10)

A feeding device that feeds the packaging material, a first servo motor for moving the heater blocks vertically arranged, and a second servo motor for moving the heater blocks forward and backward, A box motion type end seal device that revolves the heater block by operating a servo motor at an appropriate timing, and sandwiches the wrapping material between the heater blocks when the heater blocks are in a meshing position, and performs heat sealing; In a horizontal bag making and filling machine provided with a supply device for supplying a product to be packaged in the packaging material and a control device for controlling the devices,
In response to the stop position occupied by the end seal device being the meshing position of the heater block when the empty bag prevention function is activated or when the packaging machine is stopped, the control device responds to the first servo motor. A horizontal type bag making and filling machine characterized by instructing and opening the heater block at least in the vertical direction to shift to a retracted position separated from the packaging material.   The control device stops the heater block at the retracted position after the end seal device stops at the stop position when the empty bag prevention function is activated or when the packaging machine is stopped, and after a predetermined sealing time has elapsed. The horizontal bag-making filling and packaging machine according to claim 1, wherein   The horizontal bag-making filling and packaging machine according to claim 1, wherein the retreat position is a position on a locus of the box motion.   In response to restart or start of operation of the end seal device, the control device calculates the first servo motor at a timing when the heater block reaches the retracted position on the locus of the box motion in calculation. The horizontal type bag making and filling machine according to claim 3, wherein the operation of the second servo motor is resumed.   The horizontal bag-making filling and packaging machine according to claim 1, wherein the retreat position is a position other than the locus of the box motion.   In response to the operation restart or operation start of the end seal device, the control device operates the second servo motor while the first servo motor is stopped, or activates the second servo motor. The first servo motor is operated while stopped, and the heater block is moved to a position that intersects with the locus of the box motion, and the heater block reaches a position on the locus of the box motion in the calculation. 6. The horizontal bag making and packaging machine according to claim 5, wherein the operation of the first servo motor and the second servo motor is restarted at a timing.   In response to the operation restart or operation start of the end seal device, the control device operates the second servo motor while the first servo motor is stopped to temporarily move the heater block in the front-rear direction. The maximum forward position is reached, and then the second servo motor is operated to move the heater block toward the reverse side to a position on the locus of the box motion. Horizontal type bag making filling packing machine.   8. The retreat position is a position where the control device instructs only the first servo motor to open and reach the heater block in the vertical direction from the meshing position. The horizontal bag making and filling machine according to claim 1.   The retracted position is reached by the controller instructing both the first servo motor and the second servo motor to open the heater block in the vertical direction from the mesh position and move it in the front-rear direction. The horizontal bag-making filling and packaging machine according to any one of claims 3 to 7, wherein the horizontal bag-making and packaging machine is a position to be used.   9. The horizontal bag making and filling according to claim 7 or 8, wherein the retreat position is a position occupied when the control device moves the heater block in the vertical direction and the heater block is most opened. Packaging machine.

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