JP7341419B2 - Horizontal form-fill-seal machine suitable for cleaning conveyor equipment - Google Patents

Description

The present invention relates to a horizontal form-fill-seal machine, and particularly to a horizontal form-fill-seal machine that is equipped with various conveyor devices such as a supply conveyor device for feeding products and is suitable for cleaning the conveyor device.

In a horizontal form-fill-fill packaging machine such as a horizontal pillow packaging machine, a packaging material conveying device generally pulls out a strip of packaging material from a roll of packaging material and sends it downstream, and the strip of packaging material is shaped into a substantially cylindrical shape by a cylinder maker. The product to be packaged is sequentially fed into the curved packaging material by a product feeding device, and the packaging material curved into a substantially cylindrical shape is transported horizontally while being bent into a longitudinal direction. A center seal is applied to the cylindrical packaging material to form a cylindrical packaging material, and further end seals are applied to the front and rear parts by an end sealing device so as to sandwich the product inside the cylindrical packaging material in the transport direction of the cylindrical packaging material. This is a packaging machine that manufactures bag packages (so-called pillow packages). The continuous bag packages are cut, for example, at the end seal, and separated into individual bag packages, which are then transported out by a package delivery conveyor. A packaging material conveyance device, a product supply device, an end seal device, and the like are each driven by a servo motor and controlled by a control device to operate in synchronization with each other (see, for example, Patent Document 1).

In a horizontal form-fill-fill packaging machine, the product supply device that supplies the products to be packaged to the packaging machine section is a chain-driven device in which pusher attachments that support and convey the rear part of the product are attached to an endless chain at predetermined intervals. This is a type of feeding conveyor. The endless chain spans multiple sprockets arranged in the front and rear of the supply direction, such as a drive sprocket and a driven sprocket. Driven by a servo motor. The rotational force of the drive motor is transmitted to the sprocket to drive the endless chain that meshes with the teeth of the sprocket. The product placed on the conveyance path is fed along the conveyance path toward the packaging machine section, specifically, into the packaging material bent by the cylinder maker, while the rear end is pushed by the pusher attachment of the running endless chain. The feed conveyor is driven at a speed based on the packaging capacity data input.

By the way, when the product to be packaged by the horizontal form-fill-seal machine is an individual food such as a confectionery, crumbs spilled from the food may adhere to the endless chain or pusher attachment on the supply conveyor. . Food particles adhering to the chain tend to become entangled in the chain, making it difficult to scrape or sweep it away with a cleaning tool. There is a concern that the adhered food particles may deteriorate the sanitary conditions of the horizontal bag-forming-fill-sealing machine, so it is necessary to clean it from time to time or periodically to keep it clean.

If the adhesion of product waste to the supply conveyor is severe, remove the endless chain from the sprocket and clean it and the pusher attachment attached to it, or remove the endless chain from the supply conveyor and move the conveyor to a vacant space. A thorough cleaning is carried out to clean the inside. It is extremely difficult to clean the supply conveyor chain by removing it from the sprocket, and it is equally difficult to re-wrap it around the sprocket and put it back together. As a method for easily cleaning such a supply conveyor , a method described in Patent Document 3 in which the supply conveyor is removed from the main body of a horizontal bag-forming-fill-sealing machine has been proposed.

If the adhesion of product debris is light or if some cleaning has already been done, such as when changing products, it is relatively easy to clean by blowing out the product debris with air blow without removing the endless chain from the sprocket. Cleaning will be carried out. In this case, cleaning is performed by opening the safety cover on the side of the supply device and blowing air to the areas that need to be blown out. However, due to the structure of the supply conveyor and restrictions on access to the endless chain from the outside, it is difficult to perform cleaning all at once. Furthermore, the supply conveyor is usually covered with a safety cover for hygiene and safety reasons, and when the safety cover is open, the power supply to the servo motor for driving the supply conveyor is interrupted by the function of a safety circuit. It is blocked. The supply conveyor (same goes for the packaging machine) cannot operate unless the safety cover is closed, and the safety cover cannot be opened unless the supply conveyor is stopped. These circumstances make the cleaning work of endless chains and pusher attachments complicated.

In order to clean the endless chain over its entire circumference, the endless chain must be manually moved to successively move the cleaning range. That is, the supply conveyor is stopped, the safety cover is opened, and when the visible part (range) of the chain has been cleaned, the safety cover is closed and the supply conveyor is moved slightly. Once the chain has moved a little and the uncleaned area becomes accessible, stop the feed conveyor. Once stopped, the safety cover can be opened. By repeating the steps of stopping and restarting the supply conveyor, opening and closing the safety cover, and cleaning a predetermined area, the endless chain and pusher attachment are cleaned little by little in a certain area each time. It is possible to grab the endless chain or pusher attachment and move it manually, but the motor shaft with attached mechanisms such as reducers remains connected, and the reducer will be driven from the output side as a speed increaser. Therefore, it is a task that requires a great deal of force. Therefore, cleaning the supply conveyor requires time and effort, and workability and efficiency are not good.

Therefore, a supply conveyor for a horizontal bag-forming-fill-sealing machine has been proposed in which the chain of the supply conveyor for supplying products can be cleaned without removing the chain from the sprocket (Patent Document 1). The supply conveyor shall be equipped with a drive transmission system consisting of a driven gear that rotates a sprocket via a transmission gear from a driving gear driven by a servo motor, and the transmission gear has a fitting/disengagement structure with respect to the driving gear. It is configured to be detachable using a clutch. When the clutch is disengaged and the transmission gear is separated from the drive gear, the servo motor and chain are disconnected, so the endless chain can be moved manually and the parts of the endless chain that appear can be cleaned. Become. Although it is still a matter of slightly feeding the endless chain and stopping it, by adding a clutch, there is no need to manually move the servo motor while rotating the reducer in the opposite direction (in other words, as a speed increaser). .

When the horizontal bag-form-fill-seal packaging machine is turned on, the operating speed may change slightly depending on the packaging speed, but normally the rotational output of the drive motor is reduced by a speed reducer to operate various conveyors. is in driving mode. When trying to clean the various conveyors installed in horizontal bag-forming-fill-sealing machines to remove dirt and debris from the chains, etc., it is necessary to manually turn the speed reducer in the opposite direction while the drive source that drives the chain is stopped. Since the chain is moved in a moving manner, it is required to move the chain with excessive force. To clean the chain, etc. without using excessive force, as mentioned above, resort to brute force measures such as removing the endless chain from the sprocket, or remove the fit in the drive path from the drive motor to the sprocket. - It was necessary to provide an additional hardware structure such as a disengagement mechanism (clutch).

In the horizontal form-fill-fill packaging machine, the carry-in conveyor and the discharge conveyor are configured as a transition device (shuttle conveyor) that can be opened and closed, and when the shuttle conveyor is open, the heater blocks above and below the end seal device can be opened and closed. A horizontal packaging machine has been proposed in which the heat-sealing surface of the heater block is easily cleaned (Patent Document 2). Since the vertical opening and closing of the end seal device and the forward and backward movement (front and rear opening and closing) of the crossing device are linked by a cam mechanism, the space above the heat sealing surface is opened to facilitate cleaning.

Regarding the operation control of the supply conveyor in a horizontal form-fill-fill-seal machine, if a situation such as a product or a foreign object being caught on the supply conveyor occurs, a large load (current, torque) is generated on the servo motor that drives the supply conveyor. Conventionally, when an excessive load is applied to a servo motor, the load monitoring function of a servo amplifier provided in the servo motor is used to recognize this and stop the operation of the supply conveyor.

JP2012-224442A Japanese Patent Application Publication No. 2012-188155 Japanese Patent Application Publication No. 2006-335466

Therefore, in order to clean the conveyor device installed in a horizontal form-fill-seal machine, conventional measures have been taken, such as disassembling and reassembling the structure which involves troublesome work, adding a hardware structure that increases costs, or using brute force. However, by focusing on the control of the drive source that drives the conveyor equipment and devising ways to control the operation of the drive source, a software-based solution has been developed that is simple and inexpensive with less effort on the part of the user. There are issues that need to be solved in terms of making cleaning possible.

The purpose of this invention is to improve the user's ability to use existing horizontal bag-form-fill-seal packaging machines by applying software-based ingenuity to the operation control of the drive source that drives the conveyor device, without making any changes to the hardware configuration. To provide a horizontal bag-forming-filling-sealing machine that can be easily cleaned with less effort and at low cost.

The horizontal bag-forming-filling-sealing machine according to the invention according to claim 1 includes :
A packaging material feeding device that pulls out a strip of packaging material from a packaging material roll and sends it downstream;
a cylinder making machine that forms the strip-shaped packaging material into a substantially cylindrical packaging material and feeds the substantially cylindrical packaging material in a horizontal direction;
a center seal device that forms the substantially cylindrical packaging material into a cylindrical packaging material by applying a center seal to the overlapping side edge portion extending in the longitudinal direction of the substantially cylindrical packaging material;
a product supply conveyor device that sequentially supplies products to be packaged in the cylindrical packaging material;
The end sealer is disposed opposite to each other with the cylindrical packaging material in between and moves toward and away from the cylindrical packaging material, and when the end sealer moves toward and away from the cylindrical packaging material, the end sealer moves toward and away from the cylindrical packaging material. an end sealing device that applies an end seal to a cylindrical packaging material in a transverse direction and moves away from the cylindrical packaging material when performing a separating operation in the approaching and separating operation; the packaging material feeding device; the center sealing device; and the product supply conveyor. A horizontal bag-forming-filling-sealing machine comprising a control device for controlling the operating speed of the device and the end sealing device,
The control device has a normal operation mode in which the product supply conveyor device is operated at a packaging operation speed determined from the packaging speed, and a normal operation mode in which the product supply conveyor device is operated at a packaging operation speed that is sufficiently slower than the packaging operation speed and is suitable for cleaning. A cleaning operation mode that operates at high speed is selectable.
A load acting on the drive motor that drives the product supply conveyor device is monitored using a load monitor function provided in the drive motor, and the control device is configured to perform a load monitoring function that is set in advance by the load monitor function in the cleaning operation mode. and stopping the product supply conveyor system in response to a monitored load above a sufficiently low detection level.

According to the horizontal form-fill-fill-seal packaging machine according to claim 1 , the control device is provided with a cleaning operation mode in addition to the normal operation mode, and the operator can select one of the modes. There is. An operator can select a cleaning operation mode when attempting to clean a product supply conveyor device provided in a horizontal form-fill-seal machine. In the cleaning operation mode, the product supply conveyor device is operated at a low cleaning speed that is sufficiently lower than the normal packaging operation speed, so that the operator can safely perform cleaning work on the product supply conveyor device that is being operated. This avoids concerns that the product supply conveyor equipment during cleaning poses a safety risk to the operator. In addition, it is possible to clean while operating the product supply conveyor device using the drive source, and it is more efficient for the operator that it is easier to clean when the product supply conveyor device is rotating and the cleaning area is moved sequentially in front of the operator. We can respond to specific cleaning requests.
A suitable speed for cleaning the product supply conveyor device in the cleaning operation mode can be a low cleaning speed that is sufficiently slower than the packaging operation speed, or if cleaning is likely to take a long time, the product supply conveyor device can be This may include stopping.

The horizontal bag-forming-fill-sealing machine according to claim 2 is the horizontal bag-forming-filling-sealing machine according to claim 1 , which comprises:
A shuttle conveyor device is provided as a set of conveyor devices consisting of an intermediate conveyor device and a package discharge conveyor device that move toward and away from each other in conjunction with the approach and separation operations of the end sealer, and the set of conveyor devices includes: When the conveyor devices of the group are in the separation state in the approaching and separating operation, the end sealer performs an approach operation, and when the end sealer is in the separation state in the separation operation of the end sealer, the conveyor device of the group The cylindrical packaging material containing the product can be moved across by the approaching movement in the approaching and separating movement, and the driving is performed using a load monitoring function provided in a drive motor that drives the shuttle conveyor device. The load acting on the motor is monitored,
The control device is capable of controlling the operating speed of the shuttle conveyor device, and has two modes: a normal operation mode in which the shuttle conveyor device is operated at a packaging operation speed determined from the packaging speed, and a speed sufficiently slower than the packaging operation speed. A cleaning operation mode in which the shuttle conveyor device is operated at a speed suitable for cleaning is selectable;
The control device is configured to detect that, in the cleaning operation mode of the shuttle conveyor device, a load equal to or higher than a preset sufficiently low detection level is monitored by the load monitor function provided in a drive motor that drives the shuttle conveyor device. Accordingly, the shuttle conveyor device can be stopped because a load that should be stopped has occurred on the shuttle conveyor device.
If the user determines that the shuttle conveyor system requires cleaning, the user can select to also clean the shuttle conveyor system and run it at a slow cleaning speed, but not both the product supply conveyor system and the shuttle conveyor system. The conveyor systems may be operated at synchronized slow cleaning speeds. When both conveyor devices are operated at synchronized low cleaning speeds, the entire horizontal form-fill-seal machine is also operated at the same synchronized low cleaning speeds, eliminating the need for conveyor device selection. The control procedure can even be simplified. In this case, the operation of sealing devices such as the center sealing device and the end sealing device can remain stopped. Alternatively, the entire horizontal form-fill-seal machine, including not only both conveyor devices but also other center seal devices and end seal devices, can be operated at a particularly slow cleaning speed.

In the horizontal form-fill-fill-seal packaging machine according to claim 2 , the product supply conveyor device, or the product supply conveyor device and the shuttle conveyor device (if these conveyors are not concerned with a specific conveyor device, the term “conveyor device”) ), it is possible to monitor the load acting on the drive motor by using the load monitor function provided in the drive motor that drives the conveyor. This is a usable function provided in a drive motor that drives a conveyor device, and can be a load monitor function that can monitor the load acting on the drive motor. The load acting on the drive motor that can be monitored may be the output torque when the drive motor is a servo motor, or the current flowing through the servo amplifier provided in the servo motor. The function to monitor the load in conveyor equipment driven in cleaning operation mode is provided in existing drive motors such as servo motors, and changing the detection level of the load monitor function requires changing the hardware. This can be done by software settings for the drive motor. By setting the load detection level of the drive motor's load monitor function to a sufficiently low level, even small increases in load encountered during low-speed operation of the conveyor system can be detected by the drive motor. When the conveyor device is monitored by the monitor function, the operation of the conveyor device can be immediately stopped. As a result, if an operator who is cleaning a conveyor device operating at a low cleaning speed touches the conveyor device and the load is different from normal even if it is light, the drive motor is immediately stopped and the conveyor device is restarted. Since the conveyor is stopped, the operator can safely clean the conveyor device.

The horizontal bag-forming-fill-sealing machine according to claim 3 is the horizontal bag-forming-filling-sealing machine according to claim 1 or claim 2 , which comprises:
When the cleaning operation mode is terminated, the control device controls the product supply conveyor device that was in the cleaning operation mode when referring to claim 1, and the cleaning operation mode when referring to claim 2. The product supply conveyor device and the shuttle conveyor device, which have been in the operation mode , can be operated to a reference position for starting operation in the normal operation mode, and then stopped.
When the operation control by the control device is performed in this way, the product supply conveyor device that was in the cleaning operation mode when citing claim 1 is changed, and the product that was in the cleaning operation mode when citing claim 2 is Since the supply conveyor device and the shuttle conveyor device are operated to the reference position for starting operation in the normal operation mode and then stopped, when starting the operation in the normal operation mode, the product supply conveyor device when citing claim 1 The positions of the product supply conveyor device and the shuttle conveyor device when referring to claim 2 occupy the reference positions , and a smooth transition to the normal operation mode can be made.

The horizontal bag-forming-fill-sealing machine according to claim 4 is the horizontal bag-forming-filling-sealing machine according to claim 1 or claim 2 , which comprises:
When citing claim 1, the product supply conveyor device includes a safety cover that covers the product supply conveyor device , and when citing claim 2, the product supply conveyor device and the shuttle conveyor device include a safety cover. A safety cover is installed to cover the product supply conveyor device and the shuttle conveyor device ,
In the control device, when the cleaning operation mode is selected for the operation of the product supply conveyor device in the case of citing claim 1 , the control device controls the operation of the product supply conveyor device. operating the product supply conveyor device in the cleaning operation mode even when the safety cover is opened ;
In the control device, when the cleaning operation mode is selected for the operation of the product supply conveyor device and the shuttle conveyor device when citing claim 2, the control device controls the product supply conveyor device and the shuttle conveyor device. Even when the safety cover provided on the conveyor device is opened, the product supply conveyor device and the shuttle conveyor device can be operated in the cleaning operation mode.
In the current horizontal form-fill-fill-seal machines, the product supply conveyor device and the shuttle conveyor device are provided with safety covers that cover these conveyor devices. These safety covers have a safety design in that when opened, the packaging machine stops operating, and the packaging machine cannot be operated with the safety cover open. Therefore, in order to clean the product supply conveyor system or the product supply conveyor system and the shuttle conveyor system, (1) stop the operation of the packaging machine, open the safety cover, operate the conveyor system manually, clean the conveyor system, Repeated manual operation and cleaning of the conveyor device, closing the safety cover at the end of cleaning, and restarting the packaging machine, or (2) Stopping the packaging machine, opening the safety cover, cleaning the conveyor device, and safety cover. The procedure was complicated: closing the packaging machine, operating the packaging machine briefly, stopping the packaging machine (returning to the beginning), repeating the above steps, closing the safety cover when cleaning was completed, and restarting the packaging machine.
In the horizontal bag-form-fill-seal packaging machine according to claim 4 , which is provided with a safety cover, when it is detected that the safety cover of the conveyor device to be cleaned is opened when the cleaning operation mode is selected, Rather than the entire operation of the packaging machine being stopped, the conveyor system is operated (driving the drive motor) at the low cleaning speed specified in the cleaning operation mode. Therefore, the operator can begin cleaning the conveyor device by opening the safety cover.

The horizontal bag-forming-fill-sealing machine according to claim 5 is the horizontal bag-forming-filling-sealing machine according to claim 4 , which comprises:
The control device interlocks the operation/stop of the product supply conveyor device and the opening/closing of the safety cover disposed on the product supply conveyor device when citing claim 1 in claim 4 , 4, when citing claim 2, the operation/stop of the product supply conveyor device and the shuttle conveyor device and the opening/closing of the safety cover disposed on the product supply conveyor device and the shuttle conveyor device are linked. can be done.
For example, when the operator selects the cleaning operation mode provided in the control device and the packaging machine shifts to cleaning operation mode, when the safety cover is opened, the packaging machine will automatically stop operating. The conveyor device can be cleaned in a closed state and the packaging machine can automatically start running at a constant speed (slow and low speed) when the safety cover is closed. In this case, the only operation the operator performs to clean the conveyor device is to open and close the safety cover, and there is no need to operate the packaging machine to start or stop it.
As another example of interlocking, when the safety cover of a conveyor device is opened, the operation of the conveyor device starts immediately or after a predetermined short period of time at the operating speed specified in the cleaning operation mode. can do. Furthermore, once the safety cover is closed, the operation of the conveyor device may be stopped immediately or after a predetermined short period of time, or the conveyor device may be allowed to continue operating at the same operating speed.

The horizontal bag-forming-fill-sealing machine according to claim 6 is the horizontal bag-forming-filling-sealing machine according to claim 1 or claim 2 , which comprises:
In the cleaning operation mode, the low cleaning speed of the product supply conveyor device when referring to claim 1, and the low speed cleaning speed of the product supply conveyor device and the shuttle conveyor device when citing claim 2, can be set to an arbitrary value. It may be possible to change the speed or select from among a plurality of speeds.
As the speed to be changed or selected, for example, the low cleaning speed of the conveyor device can be changed to a default speed, a lower speed, or even stop. Further, it is possible to set an arbitrary speed (% ratio) to the default speed. The speed of the conveyor system can be changed to a speed slower than the slow cleaning speed or to a stop mode to perform a deep cleaning of the conveyor system.

A horizontal bag-form-fill-seal packaging machine according to claim 7 is a horizontal bag-form-fill-seal packaging machine according to claim 1 or claim 2, in which the cleaning operation mode is selected. Display means may be provided to display that the cleaning mode is in operation.
By displaying through the display means that the horizontal bag-filling-sealing machine is operating in the cleaning mode, the operator or other operators can recognize and confirm the operating mode of the horizontal bag-filling-sealing machine. Can be done. Examples of the display means include optical displays such as lamps and displays, or acoustic displays such as alarm sounds.

A horizontal form-fill-seal packaging machine according to claim 8 is a horizontal form-fill-seal packaging machine according to claim 1 or 2, wherein the product supply conveyor device includes a pusher attachment that supports and conveys the rear part of the product. The chain conveyor may be constructed of an endless chain mounted at predetermined intervals and supported and driven by sprockets at both ends.

According to the horizontal bag-forming-fill-sealing machine suitable for cleaning a product supply conveyor device according to the present invention, in the control device, an operator can control the product supply conveyor device (referring to claim 1, in which only the product supply conveyor has a load monitoring function). cleaning the product supply conveyor) or the product supply conveyor device and shuttle conveyor device (the product supply conveyor and shuttle conveyor device in the case of citing claim 2 in which the product supply conveyor and shuttle conveyor device are equipped with a load monitoring function); When cleaning, use a product supply conveyor device or a product supply conveyor device and a shuttle conveyor device (hereinafter, in this paragraph, when a shuttle conveyor device is also mentioned, “product supply It is possible to select a cleaning operation mode for operating the conveyor (abbreviated as "conveyor device") . In the cleaning operation mode, operating the product supply conveyor system at a low cleaning speed eliminates the need to expend the effort of manually moving the product supply conveyor system, and also allows the product supply conveyor system to be easily accessible to the operator during cleaning. Does not pose a safety risk. Furthermore, cleaning can be done while the product supply conveyor device is operated by the drive source, and it is easier for the operator to clean when the product supply conveyor device is rotating and the areas to be cleaned are sequentially moved in front of the operator. We can respond to specific cleaning requests. In this way, since the product supply conveyor device is operated at a low cleaning speed that is sufficiently lower than the normal operating speed, the operator can clean the product supply conveyor device safely and with less effort.
In this horizontal form-fill-fill-seal machine, it is possible to monitor the load acting on the drive motor by using the load monitor function of the drive motor that drives the product supply conveyor device. By setting the load detection level of the function to a sufficiently low level, even small increases in load encountered during low-speed operation of the product supply conveyor system can be detected by the drive motor monitoring function. When monitored, operation of the product supply conveyor system can be immediately stopped. As a result, if an operator who is cleaning a product supply conveyor system operating at a low cleaning speed touches the product supply conveyor system and the load is different from normal even if it is light, the drive motor is immediately stopped. Since the product supply conveyor device is stopped, the operator can safely clean the conveyor device.

FIG. 1 is a block diagram showing an example of a control device for a horizontal bag-forming-filling-sealing machine according to the present invention. 2 is a flow diagram showing an example of control of the conveyor device performed by the control device shown in FIG. 1. FIG. FIG. 3 is a diagram showing an example of a display screen of a display device used in the horizontal bag-forming-fill-sealing machine shown in FIG. 1. 1 is a perspective view schematically showing an example of a horizontal bag-form-fill-seal packaging machine to which the present invention is applicable. FIG. 5 is a schematic diagram corresponding to the horizontal bag-forming-fill-sealing machine shown in FIG. 4. FIG. 5 is a schematic side view showing an enlarged example of an end sealing device and a shuttle conveyor device of the horizontal bag-forming-fill-sealing machine shown in FIG. 4. FIG.

Embodiments of the horizontal bag-form-fill-seal machine according to the present invention will be described below with reference to the drawings. FIG. 4 is a perspective view schematically showing an example of a horizontal bag-forming-filling-sealing machine to which the present invention is applicable. The horizontal bag-forming-fill-sealing machine 1 is equipped with a packaging material feeding device 2 at its upper center that supports a packaging material roll (not shown), pulls out a band-shaped packaging material from the packaging material roll, and sends it out downstream. The packaging material feeding device 2 includes a winding holder 3a that supports a roll of packaging material wound up with a strip-shaped packaging material, a packaging material feed roller 3b that pinches and feeds the strip-shaped packaging material, and a cushion roller that keeps the tension applied to the strip-shaped packaging material constant. 3c, and a tension roller 3d that adjusts the angle and distance of the packaging material into the cylinder making machine, which will be described later.Since these structures are well known in horizontal bag making and filling packaging machines, detailed explanations will be given here. Omitted.

The horizontal bag-forming-fill-sealing machine 1 also includes a cylinder former (former) 4 that bends a strip-shaped packaging material into a substantially cylindrical shape, and a product to be packaged in the packaging material bent by the cylinder former 4. It is equipped with a product supply conveyor device 5 that sequentially feeds products at an equal pitch. The product supply conveyor device 5 itself is a conveyor device in which pusher attachments are attached at predetermined intervals to an endless chain, and is driven by a drive motor, similar to conventional conveyor devices. The feeding direction of the substantially cylindrical packaging material that has passed through the cylinder making machine 4 is the horizontal direction, that is, the horizontal direction in the horizontal bag making and filling packaging machine 1. The product supply conveyor device 5 is not particularly provided with a cover for covering the upper part, so it is in an open state toward the top. The horizontal bag-forming-fill-sealing machine 1 further includes a pair of perforated heat rollers on the downstream side of the product supply conveyor device 5 that is approximately horizontally extended, and a center portion of the overlapping side edge portion extending in the longitudinal direction of the approximately cylindrical packaging material. A center sealing device 6 is provided for sealing and forming a strip-shaped packaging material into a cylindrical packaging material. Downstream of the center sealing device 6, a pair of heaters and a cutter are provided which are machined with holes, and are movable toward and away from the cylindrical packaging material in the transverse direction, and come into contact with the cylindrical packaging material to seal the end. An end sealing device 7 for carrying out the above-mentioned packaging and a belt-conveying-type package delivery device 8 for delivering the manufactured packaging (pillow packaging) to a boxing device or the like outside the packaging machine are provided. The end sealing device 7 approaches and separates from the cylindrical packaging material by, for example, a box motion motion at a position where the product is sandwiched between the front and back of the cylindrical packaging material in the feeding direction, and contacts the cylindrical packaging material to apply an end seal. give

The center seal device 6, the end seal device 7, and the package delivery device 8 are provided with safety covers 6a, 7a, and 8a that cover the respective devices from above. The operator can open and close the safety covers 6a, 7a, 8a by grasping the handles 6b, 7b, 8b attached to the safety covers 6a, 7a, 8a, and moving them up and down. During normal packaging operations, the center seal device 6, end seal device 7, and package delivery device 8 operate at a considerable speed. , 7a, 8a are closed. When cleaning the center seal device 6 and end seal device 7, by rotating the safety covers 6a and 7a around each hinge to open the safety covers 6a and 7a, the operator can visually inspect each conveyor device 6 and 7 to see if they are dirty. etc. can be confirmed. Although the package delivery device 8 is a belt conveyor type, it is less likely to be contaminated with product residue and can be cleaned individually, so here it is used as a conveyor device to be cleaned in a horizontal bag-forming-fill-sealing machine. are not included.

FIG. 5 corresponds to the horizontal bag-fill-seal machine shown in FIG. 4, and is a schematic diagram of the horizontal bag-fill-seal machine showing a state in which a product is supplied and the product is packaged with a packaging material. FIG. 5(a) is a schematic diagram of the horizontal bag-forming-fill-sealing machine seen from the side, and FIG. 5(b) is a schematic diagram of the horizontal bag-filling-sealing machine seen from the top. The packaging material feeding device 2 feeds out the strip-shaped packaging material Fw from the packaging material roll Fr supported by the winding holder 3a, and the packaging material feeding device 2 is driven by a paper feeding servo motor 3e via an appropriate transmission mechanism. The belt-shaped packaging material Fw is sandwiched between the rollers 3b and sent out toward the cylinder making machine 4. Referring to FIGS. 4 and 5, the horizontal bag-form-fill-seal packaging machine 1 is a continuous operation type packaging machine that forms a cylindrical packaging material Ft from a strip-shaped packaging material Fw that is continuously transferred in the horizontal direction. This is a packaging machine that continuously manufactures pillow packaging bodies Bp, which are bag packaging bodies, by feeding the product P into the packaging machine. The band-shaped packaging material Fw is bent by a cylinder forming device (former) 4 until the both side edge portions (overlapping portions) fe, fe of the packaging film Fw are drawn toward each other and becomes approximately cylindrical.

The band-shaped packaging material Fw, which has passed through the cylinder making device 4 and has been bent into a substantially cylindrical shape, passes through the center sealing device 6, and at this time, a center seal is applied to the overlapped side edge portions fe, fe. It is formed into a cylindrical packaging material Ft. The center seal device 6 includes, in order from the upstream side for feeding the packaging material, a paper pulling roller section 10, a heating bar heater section 30 disposed immediately after the downstream side, and a weight roller section 20. . In this embodiment, the center seal device 6 also serves as a paper pulling device. The paper pulling roller unit 10 is equipped with a pair of paper pulling rollers 11 and 12 which are textured, and the rollers 11 and 12 receive driving force from a paper pulling servo motor 13 and rotate in opposite directions. rotated at synchronous speeds. Between the circumferential surfaces of the paper pulling rollers 11 and 12, overlapping side edge portions fe and fe of a strip-shaped packaging material Fw curved into a substantially cylindrical shape are sandwiched. The strip-shaped packaging material Fw is paper-pulled by the tensile force acting on both side edge portions fe and fe from paper-pulling rollers 11 and 12, and is sent to the subsequent bar heater section 30.

The heating bar heater unit 30 includes a pair of bar heaters 31 and 32 that are close to each other so as to sandwich both side edge portions fe and fe of the strip-shaped packaging material Fw between them, and heat the both side edge portions fe and fe using radiant heat. On the downstream side of the bar heater section 30, a weight roller section 20 is disposed. The fabric roller section 20 includes a pair of textured rollers 21 and 22, and the fabric rollers 21 and 22 are synchronized in opposite directions by receiving driving force from a fabric roller servo motor 23. rotated at speed. The paper pulling servo motor 13 and the basis weight roller servo motor 23 are controlled so that the roller circumferential speeds of the paper pulling roller section 10 and the basis weight heater section 20 are equal. In order to prevent burning of the packaging material when paper feeding of the strip-shaped packaging material Fw is stopped for a long time, the bar heater section 30 has an opening/closing mechanism (not shown) for moving the bar heaters 31 and 32 closer to and away from each other. It is preferable to have the following. Although no heating means (heater) is embedded in the weight rollers 21 and 22, a center seal is completed by pressurizing both side edge portions fe and fe heated by the bar heaters 31 and 32, and a curved packaging film is formed. Fw is formed into a cylindrical packaging film Ft.

An end seal device 7 is disposed downstream of the center seal device 6. The end seal device 7 forms an end seal portion Se of the bag B by applying an end seal to the cylindrical packaging material Ft between the packages P and P that are continuous in the feeding direction. Through these steps, a pillow package Bp in which the package P is enclosed in a bag is sequentially manufactured. The end seal device 7 is equipped with a cutter (well-known, not shown here) that cuts the packaging film at the end seal portion Se, thereby making it possible to separate the pillow packages Bp into individual pieces.

FIG. 6 is an enlarged side view schematically showing an example of the end sealing device and shuttle conveyor device of the horizontal bag-forming-filling-sealing machine shown in FIG. 4. FIG. As shown in FIG. 6, the end seal device 7 is a direct-acting end sealer that is driven to open and close in a box motion manner with respect to the cylindrical packaging material Ft, which is continuously fed by the center seal device 6. 7c and 7d. The end sealers 7c and 7d are upper and lower heater blocks, and during the closing operation, they approach the cylindrical packaging material Ft from the vertical direction and sandwich the cylindrical packaging material Ft together with the cylindrical packaging material Ft. While moving, the cylindrical packaging material Ft is pressurized and heated to apply an end seal to the cylindrical packaging material Ft, and then, by an opening operation, it is separated from the cylindrical packaging material Ft in the vertical direction. The shuttle conveyor device 40 is configured as a set of conveyor devices in which an intermediate conveyor device 41 and a package discharge conveyor device 42 operate in relation to each other, and the product P is conveyed before and after the end seal device 7 which performs a box motion operation. It functions to move the cylindrical packaging material Ft housed inside. In the shuttle conveyor device 40, the intermediate conveyor device 41 and the package discharge conveyor device 42 are driven by drive pulleys 45 and 46, respectively, which are driven by a shuttle conveyor servo motor 43 via an appropriate transmission mechanism 44, and a conveyor conveyance direction. Transition pulleys 47, 48 that approach and separate from each other, intermediate pulleys 49, 50 that move like moving pulleys according to the approach and separation of crossover pulleys 47, 48, and other guide pulleys 51, 52 whose positions are fixed. We are prepared. In the crossing conveyor device 41 and package delivery device 42, conveyor belts 53, 54 are wound around these pulleys 45, 47, 49, 51; 46, 48, 50, 52, respectively, as shown.

FIG. 6A shows a state in which the end sealers 7c and 7d of the end sealing device 7 approach the cylindrical packaging material Ft and perform end sealing. In this state, the transition pulleys 47 and 48 are in a separated state, allowing the end sealers 7c and 7d to approach and separate from the cylindrical packaging material Ft through them. Each pulley of the shuttle conveyors 41, 42 is exactly symmetrically arranged with respect to the central position. Drive pulleys 45, 46 cause each conveyor belt 53, 54 of shuttle conveyors 41, 42 to move at the same speed.

FIG. 6(b) shows a state in which the end sealers 7c and 7d of the end sealing device 7 are separated from the cylindrical packaging material Ft to allow the cylindrical packaging material Ft to pass through. After the end seals are applied, when the end sealers 7c and 7d are separated from the cylindrical packaging material Ft, the transition pulleys 47 and 48 of the intermediate conveyor device 41 and the package delivery conveyor device 42 approach each other, and the cylindrical product P is filled with the end sealers 7c and 7d. The packaging material Ft is placed on the conveyor belts 53 and 54 and moved from the intermediate conveyor device 41 to the package delivery conveyor device 42. In addition to driving the shuttle conveyor servo motor 43, intermediate pulleys 49, 50 and crossing pulleys 47, 48 are controlled to move in a direction parallel to the conveying direction, and as a result, crossing pulleys 47, 48 are moved close to each other. It moves in the conveying direction (according to the principle of movable pulleys, it moves at twice the moving speed of the intermediate pulleys 49 and 50) to allow belt conveyance of the cylindrical packaging material Ft containing the product P in a crossing state. The manufactured pillow package Bp is passed from the package carry-out conveyor device 42 to the package carry-out device 8 and is carried out of the packaging machine.

FIG. 1 is a block diagram showing an example of a control device included in a horizontal bag-forming-filling-sealing machine according to the present invention. As shown in FIG. 1, the control device 60 controls the timing, operating speed, etc. of various devices driven in the horizontal bag-forming-filling-sealing machine. The specific object to be controlled in each device is a drive motor (for example, a servo motor) suitable for timing, position, and speed control in each device. In the control device 60, the operation mode control unit 61 determines the packaging material feeding device 2, product supply conveyor device 5, center seal device 6, end seal device 7, shuttle conveyor device 40, and package delivery device 8 from the packaging speed. The normal operation mode control unit 62 operates at a timing and operating speed that is suitable for cleaning the product supply conveyor device 5 and the shuttle conveyor device 40, which are conveyor devices, and which is sufficiently slower than the packaging operation speed. A cleaning operation mode control section 63 is provided to allow the operator to select one of the operation modes.

As one of the input elements to the control device 60, there is an operation mode selection means 70. In the mode selection means 70, the operator selects the normal operation mode or the cleaning operation mode as the operation mode to be performed by the horizontal bag-filling-sealing machine 1. The operation mode selected by the mode selection means 70 is input to the operation mode designation section 64 of the control device 60. The operation mode specifying section 64 sends a specification signal to the operation mode control section 61 according to the input operation mode, and the operation mode control section (normal operation mode control section 62 or cleaning operation mode control section 63) performs a control operation. Establish. As the conveyor device to be cleaned, one or both of the product supply conveyor device 5 and the shuttle conveyor device 40 can be selected. The sealing devices such as the center sealing device 6 and the end sealing device 7 may remain inactive or may be operated at a low cleaning speed synchronized with the conveyor devices 5 and 40.

As another input element to the control device 60, there is a cleaning setting means 71 for setting in detail the combination of the conveyor device to be cleaned and the cleaning operation speed in the above-mentioned cleaning operation mode. The detailed setting contents set in the cleaning setting means 71 are stored in the setting storage means 65 in the control device 60. When the cleaning operation mode is selected in the mode selection means 70 , when the combination of the conveyor device to be cleaned in the cleaning operation mode, the cleaning operation speed, etc. is selected in the cleaning setting means 71, the selected information is The setting information is also sent from the driving mode specifying section 64 to the driving mode controlling section 61, and the driving mode controlling section 61 can call up the setting contents from the setting storage means 65.

In the cleaning operation mode, the operating speed of the conveyor device is a low cleaning speed, so that the operator can basically clean the conveyor device safely. In order to deal with the unlikely event that an operator touches the conveyor while cleaning or the cleaning tool gets caught, a load monitoring function provided in the drive motor that drives the conveyor device is used. In other words, by changing the load detection level of the existing load monitoring function of a drive motor such as a servo motor to a sufficiently low detection level using software, it is possible to detect even the slightest load acting on the drive motor. can be monitored. By lowering the detection level of the load monitor function to a low load level, it is possible to prevent an abnormal load exceeding a certain level from occurring due to an operator cleaning a conveyor device operating at a low cleaning speed touching the conveyor device. When recognized by the monitor function, it is assumed that a constant load has been applied to the conveyor device, even if it is a light load, and the driving of the drive motor is immediately stopped to stop the conveyor device.

Other input elements to the control device 60 include operating loads on the product supply conveyor device 5 and the shuttle conveyor device 40, specifically, a load monitoring function 72 provided in the drive motors that drive each conveyor device (current flowing through the drive motors). , the generated torque can be monitored), in the control device 60, the load determination section 66 receives monitor information from the load monitor function 72 provided in the drive motor, and the operation mode control section 61 receives the determination result. In accordance with the determination result, the operation of the conveyor device, that is, the drive motor that drives the conveyor device is controlled. By setting the operating load judgment level (load detection level of the load monitor function) in the load judgment unit 66 to a sufficiently low level in terms of software, the operation of the conveyor device can be stopped even when a slightly increased load is detected. Preferably, the cleaning of the conveyor system by the operator is made safe.

To clean the shuttle conveyor device 40, it is necessary to open the safety covers 6a, 7a provided on the center seal device 6 and end seal device 7 to make the inside visible. Therefore, as another input element to the control device 60, a safety cover opening/closing sensor 73 is provided to detect opening/closing of the safety covers 6a, 7a. A detection signal from the safety cover opening/closing sensor 73 is input to a cover opening/closing determining section 67 in the control device 60 . The determination result of the cover opening/closing determination section 67 is input to the driving mode control section 61. In the normal operation mode, if either of the safety covers 6a, 7a is open, the packaging machine 1 can be set so that it cannot perform normal operation to avoid danger, but in the cleaning operation mode, the Since the operating speed is low, if the cover opening/closing determination unit 67 determines that the safety covers 6a, 7a are open, the shuttle conveyor device 40 is operated in the cleaning operation mode (or is enabled to operate). Therefore, the shuttle conveyor device can be started and stopped using a separate operation switch. Furthermore, if the opening and closing of the safety covers 6a and 7a are linked to operate and stop the cleaning operation mode of the shuttle conveyor device 40, the safety covers 6a and 7a serve as switches for operating and stopping the shuttle conveyor device 40. You can also have

In the cleaning operation mode, the conveyor device to be cleaned is operated at a low cleaning speed that is sufficiently lower than the operation speed in the normal operation mode. The low cleaning speed can be set to a plurality of speed levels (see the display screen of the display device described below). In the cleaning operation mode, the conveyor device is operated at a cleaning speed that is sufficiently lower than the normal operating speed, so that the operator can safely perform cleaning work on the conveyor device that is being operated. Additionally, some operators find it easier to clean when the conveyor system is in operation and the areas to be cleaned are sequentially moved in front of them, so the conveyor system is operated at a low speed using the drive motor while cleaning is performed. can do. A suitable speed for cleaning the conveyor device in the cleaning operation mode is generally a low cleaning speed that is sufficiently slower than the packaging operation speed, and it is recommended to stop the conveyor device if cleaning is likely to take a particular amount of time. can be included.

FIG. 2 is a flow diagram showing an example of control of the conveyor device performed by the control device shown in FIG. The device configurations shown in FIGS. 1 and 4 to 6 will be described below with reference to reference numerals as appropriate. According to the example shown in FIG. 2, when the horizontal bag-form-fill-seal packaging machine 1 is powered on and the control flow starts, first, the operation mode of the packaging machine 1 is selected (selected by the mode selection means 70). (Step 1; abbreviated as "S1"; the same applies hereinafter). If no operating mode has been selected, the controller shifts to a standby state and waits for an operating mode to be selected. When it is determined in S1 that the operation mode of the packaging machine 1 has been selected, it is determined whether the selected operation mode is the normal operation mode or the cleaning operation mode (designation of the operation mode). S2). When the selected operation mode in S2 is the normal operation mode, the control device 60 performs packaging of the product, so the normal operation mode control section 62 controls each device (S3). The details of the normal operation mode in S3 are self-evident for the packaging machine 1, and will not be described here.

If the selected operation mode in S2 is the cleaning operation mode, control is set depending on which conveyor apparatus to be cleaned is selected by the operator (S4). In the control device 60, a cleaning operation mode control section 63 controls each device in order to clean the conveyor device. Although it is possible that the conveyor systems to be cleaned are both conveyor systems 5, 40, for practical reasons and for ease of explanation, it is assumed that they are cleaned one after the other. It is determined whether the conveyor device to be cleaned is a conveyor device covered with a safety cover (S5). If the conveyor device does not have a safety cover (product supply conveyor device 5), the product supply conveyor device 5 is operated at a low cleaning operation speed, during which the operator performs cleaning of the product supply conveyor device 5. (S6).

If the determination in S5 is "Yes", it is determined whether the safety cover 6a or 7a of the conveyor device (shuttle conveyor device 40) that is in the cleaning operation mode and has a safety cover has been opened (S7 ). If the safety cover is not opened, it is determined that the cleaning is not ready, and the operation of the shuttle conveyor device 40 is stopped (S14), and the system waits for the safety cover to be opened. If the safety cover is open, operation at a low cleaning speed is performed (S8). By sequentially determining whether the safety cover is opened or closed, the opening and closing of the safety cover can be linked with the operation/stopping of the shuttle conveyor device 40 at a low cleaning speed.

When any conveyor device is operated at a low cleaning speed, the load on the conveyor device is monitored by the load monitor function 72 provided in the drive motor that drives the conveyor device, and the monitored load is monitored. It is determined whether or not exceeds a set load level (threshold value) (S9; determination by load determination unit 66). If the monitored load exceeds the set load level, even if the load on the conveyor device is small, it is determined that the load is above a certain level and the operation is stopped (S11). It waits for input as to whether the cause of the overload has been eliminated (S12). If the cause is eliminated by the determination in S12, the process returns to S8 and operation at a low cleaning speed is executed. If the load monitored by the load monitor function 72 does not exceed the set load level (threshold), it is determined whether or not to end the cleaning operation mode (S10). When the cleaning operation mode is to be terminated, the operation of the conveyor device that has been in the cleaning operation mode is stopped, the conveyor device is returned to the reference position for starting operation in the normal operation mode, and then stopped (S13). By doing so, the position of the conveyor device occupies the reference position at the start of the normal operation mode, and a smooth transition to the normal operation mode is possible. If it is determined in S10 that the cleaning operation mode has not ended, the process returns to S5 and operation at the low cleaning speed is continued on the condition that the safety cover remains open.

FIG. 3 is a diagram showing an example of a display screen of a display device used in the horizontal bag-forming-fill-sealing machine shown in FIG. 1. The display device is provided in the packaging machine 1 and can be used when making various settings or can be used as a monitor to show the operating status of the packaging machine 1. On the display screen 80 of the display device, a conveyor device to be cleaned can be selected in the cleaning operation mode. By marking a check box or the like, one or both conveyor devices can be selected. Display screen 80 also allows the user to change the slow cleaning speed of the selected conveyor system to a desired speed. Changes in speed can be specified before cleaning begins or can be enabled even during cleaning. The low cleaning speed can be selected from the default speed, a slower speed, or a stop mode, and can be changed to any speed by changing the ratio to the default speed. When the speed of the conveyor system is changed to a speed slower than the slow cleaning speed or to a stop mode, a deep cleaning of the conveyor system can be performed. Although not shown, by changing the speed of the conveyor device to a speed slightly higher than the low cleaning speed, it is also possible to move areas that do not require cleaning at a relatively high speed.

In the horizontal form-fill-seal packaging machine 1, the load acting on the conveyor device is monitored by the monitor function of the drive motor, and when a load exceeding a certain level is monitored, it is preferable to immediately stop the conveyor device for safety. With this load monitoring function, the load acting on the conveyor device can be monitored as an increase in the drive current or drive torque that appears as a reaction to the load on the drive motor. On the display screen 80 of the display device, when selecting the cleaning operation mode, the load detection level can be set as several levels. Further, it can be set to any load level.

The horizontal bag-form-fill-seal packaging machine 1 can be provided with a display means for displaying that the packaging machine 1 is operating in the cleaning mode. By displaying that the horizontal bag-filling-sealing machine is operating in the cleaning operation mode by the display means, any operator around the packaging machine 1 can see that the horizontal bag-filling-sealing machine is operating in the cleaning operation mode. be able to recognize and confirm that Examples of the display means include optical displays such as lamps and displays, or acoustic displays such as alarm sounds. On the display screen 80, an example is shown in which a message indicating "cleaning operation in progress when lit" is displayed. The load on the drive motor of each conveyor is monitored, and the detection level is set to a threshold that is slightly higher than the load during low-speed rotation.When in cleaning operation mode, a buzzer or other display means is used to alert surrounding operators. However, if a load exceeding a threshold value is monitored, the conveyor device is stopped. In this way, if there is a safety cover covering the conveyor device, the conveyor device can be cleaned while ensuring safety even when the safety cover is open. In the above embodiment, the product supply conveyor device 5 is not particularly equipped with a safety cover covering the top, and is shown in an open state toward the top. As described for the packaging machine, it is sometimes preferable to cover the upper part of the product supply conveyor device 5 with a safety cover from a sanitary or safety perspective. It is clear that the safety cover provided on the supply conveyor device 5 may be controlled in the same manner as the safety covers 6a, 7a provided on the shuttle conveyor 40.

1 Horizontal bag making and filling packaging machine 2 Packaging material feeding device 3a Winding holder 3b Packaging material feeding roller 3c Cushion roller 3d Tension roller 3e Paper feeding servo motor 4 Cylinder forming device (former) 5 Product supply conveyor device 6 Center sealing device 7 End seal device 7c, 7d End sealer 8 Package delivery device 6a, 7a, 8a Safety cover 6b, 7b, 8b Handle 10 Paper pulling roller section 11, 12 Paper pulling roller 13 Paper pulling servo motor 20 Weight roller section 21, 22 Weight roller 23 Servo motor for weight roller 30 Bar heater section 31, 32 Bar heater 40 Shuttle conveyor device 41 Intermediate conveyor device 42 Package delivery conveyor device 43 Servo motor for shuttle conveyor 44 Transmission mechanism 45, 46 Drive pulley 47, 48 Transition pulley 49, 50 Intermediate pulleys 51, 52 Guide pulleys 53, 54 Conveyor belt 60 Control device 61 Operation mode control section 62 Normal operation mode control section 63 Cleaning operation mode control section 64 Operation mode specification section 65 Setting storage means 66 Load determination section 67 Cover opening/closing determination Part 70 Operation mode selection means 71 Cleaning setting means 72 Motor load sensor 73 Safety cover opening/closing sensor 80 Display screen Fr Packaging material roll Fw Band-shaped packaging material fe, fe Side edge portions Ft Cylindrical packaging material B Bag P Product Bp Pillow packaging body

Claims (8)

A packaging material feeding device that pulls out a strip of packaging material from a packaging material roll and sends it downstream;
a cylinder making machine that forms the strip-shaped packaging material into a substantially cylindrical packaging material and feeds the substantially cylindrical packaging material in a horizontal direction;
a center seal device that forms the substantially cylindrical packaging material into a cylindrical packaging material by applying a center seal to the overlapping side edge portion extending in the longitudinal direction of the substantially cylindrical packaging material;
a product supply conveyor device that sequentially supplies products to be packaged in the cylindrical packaging material;
The end sealer is disposed opposite to each other with the cylindrical packaging material in between and moves toward and away from the cylindrical packaging material, and when the end sealer moves toward and away from the cylindrical packaging material, the end sealer moves toward and away from the cylindrical packaging material. an end sealing device that applies an end seal to a cylindrical packaging material in a transverse direction and moves away from the cylindrical packaging material when performing a separating operation in the approaching and separating operation; the packaging material feeding device; the center sealing device; and the product supply conveyor. A horizontal bag-forming-filling-sealing machine comprising a control device for controlling the operating speed of the device and the end sealing device,
The control device has a normal operation mode in which the product supply conveyor device is operated at a packaging operation speed determined from the packaging speed, and a normal operation mode in which the product supply conveyor device is operated at a packaging operation speed that is sufficiently slower than the packaging operation speed and is suitable for cleaning. A cleaning operation mode that operates at high speed is selectable.
A load acting on the drive motor that drives the product supply conveyor device is monitored using a load monitor function provided in the drive motor, and the control device is configured to perform a load monitoring function that is set in advance by the load monitor function in the cleaning operation mode. A horizontal bag-fill-fill-seal machine comprising: stopping the product supply conveyor device in response to a monitored load exceeding a sufficiently low detection level. The horizontal bag-form-fill-packaging machine according to claim 1,
A shuttle conveyor device is provided as a set of conveyor devices consisting of an intermediate conveyor device and a package discharge conveyor device that move toward and away from each other in conjunction with the approach and separation operations of the end sealer, and the set of conveyor devices includes: When the conveyor devices of the group are in the separation state in the approaching and separating operation, the end sealer performs an approach operation, and when the end sealer is in the separation state in the separation operation of the end sealer, the conveyor device of the group The cylindrical packaging material containing the product can be moved across by the approaching movement in the approaching and separating movement, and the driving is performed using a load monitoring function provided in a drive motor that drives the shuttle conveyor device. The load acting on the motor is monitored,
The control device is capable of controlling the operating speed of the shuttle conveyor device, and has two modes: a normal operation mode in which the shuttle conveyor device is operated at a packaging operation speed determined from the packaging speed, and a speed sufficiently slower than the packaging operation speed. A cleaning operation mode in which the shuttle conveyor device is operated at a speed suitable for cleaning is selectable;
The control device is configured to detect that, in the cleaning operation mode of the shuttle conveyor device, a load equal to or higher than a preset sufficiently low detection level is monitored by the load monitor function provided in a drive motor that drives the shuttle conveyor device. Accordingly, the horizontal bag-forming-filling-sealing machine is configured to stop the shuttle conveyor device when a load to be stopped occurs on the shuttle conveyor device. A horizontal bag-form-fill-seal packaging machine according to claim 1 or claim 2,
When the cleaning operation mode is terminated, the control device controls the product supply conveyor device that was in the cleaning operation mode when referring to claim 1, and the cleaning operation mode when referring to claim 2. A horizontal bag-forming-filling-sealing machine that operates the product supply conveyor device and the shuttle conveyor device, which have been in an operation mode, to a reference position for starting operation in the normal operation mode, and then stops them. A horizontal bag-form-fill-seal packaging machine according to claim 1 or claim 2,
When citing claim 1, the product supply conveyor device includes a safety cover that covers the product supply conveyor device , and when citing claim 2, the product supply conveyor device and the shuttle conveyor device include a safety cover. A safety cover is installed to cover the product supply conveyor device and the shuttle conveyor device ,
In the control device, when the cleaning operation mode is selected for the operation of the product supply conveyor device in the case of citing claim 1 , the control device controls the operation of the product supply conveyor device. operating the product supply conveyor device in the cleaning operation mode even when the safety cover is opened ;
In the control device, when the cleaning operation mode is selected for the operation of the product supply conveyor device and the shuttle conveyor device when citing claim 2, the control device controls the product supply conveyor device and the shuttle conveyor device. A horizontal bag-form-fill-seal packaging machine comprising operating the product supply conveyor device and the shuttle conveyor device in the cleaning operation mode even when the safety cover provided on the conveyor device is opened. 5. The horizontal bag-form-fill-seal packaging machine according to claim 4,
The control device interlocks the operation/stop of the product supply conveyor device and the opening/closing of the safety cover disposed on the product supply conveyor device when citing claim 1 in claim 4 , When citing claim 2 in claim 4, the operation/stop of the product supply conveyor device and the shuttle conveyor device and the opening/closing of the safety cover provided on the product supply conveyor device and the shuttle conveyor device are linked. A horizontal bag- forming -filling packaging machine. A horizontal bag-form-fill-seal packaging machine according to claim 1 or claim 2,
In the cleaning operation mode, the low cleaning speed of the product supply conveyor device when citing claim 1, and the low cleaning speed of the product supply conveyor device and the shuttle conveyor device when citing claim 2 are optional. A horizontal bag-forming -filling-sealing machine that can change the speed or select from a plurality of speeds. A horizontal bag-form-fill-seal packaging machine according to claim 1 or claim 2,
A horizontal bag-making device, further comprising display means for displaying that the horizontal bag-filling-sealing machine is operating in the cleaning mode in response to selection of the cleaning mode. Filling and packaging machine. A horizontal bag-form-fill-seal packaging machine according to claim 1 or claim 2,
The product supply conveyor device is a chain conveyor consisting of an endless chain supported and driven by sprockets at both ends, with pusher attachments attached at predetermined intervals for supporting and conveying the rear part of the product. Horizontal bag making , filling and packaging machine.

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