JP2020111338A - Horizontal bag-making filling packaging machine suited to cleaning of conveyor device - Google Patents

Abstract

To provide a horizontal bag-making filling packaging machine needing less labor of a user, simple and allowing inexpensive cleaning, by exercising ingenuity in software in operation control of a driving source for driving a conveyer.SOLUTION: A conveyor device equipped to a horizontal bag-making filling packaging machine to be cleaned is selected by cleaning operation mode selection means 70. In a cleaning operation mode, a cleaning operation mode control section 63 of a control device 60 operates the conveyor device to be cleaned at a low cleaning speed lower enough than an ordinary packaging operation speed, on the basis of various settings set by cleaning setting means 71, motor load information from a motor load monitoring function 72 equipped to a driving motor for driving the conveyor device, and of an open/close state from a safety cover open/close sensor 73 for the conveyor device having a safety cover. An operator can perform cleaning work safely without manually moving the conveyor device.SELECTED DRAWING: Figure 1

Description

TECHNICAL FIELD The present invention relates to a horizontal bag-making filling and packaging machine, and more particularly to a horizontal bag-making filling and packaging 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 bag-making filling and packaging machine such as a horizontal pillow packaging machine, generally, a strip-shaped packaging material is pulled out from a packaging material roll by a packaging material conveying device and sent downstream, and the strip-shaped packaging material is formed into a substantially tubular shape by a cylinder making device. The product to be packed is sequentially fed into the curved packaging material by the product supply device while being bent in a horizontal direction, and the packaging material curved in a substantially tubular shape is overlapped in its longitudinal direction. Is center-sealed to form a tubular wrapping material, and further, the products in the tubular wrapping material are sandwiched in the transfer direction of the tubular wrapping material, and end seals are applied to the front and rear portions by an end seal device. A packaging machine for producing a bag package (so-called pillow package). A continuous bag package is cut at, for example, an end seal, separated into individual bag packages, and carried out by a package carry-out conveyor. The packaging material conveying device, the product supply device, the end seal device, and the like are each driven by a servomotor and controlled by a control device so as to operate in synchronization with each other (for example, see Patent Document 1).

In a horizontal bag-filling and packaging machine, the product supply device that supplies the product to be packaged to the packaging machine part is a chain drive in which pusher attachments that support and convey the rear part of the product are attached to the endless chain at predetermined intervals. It is a type of supply conveyor. The endless chain is hung around a plurality of sprockets arranged in the front and rear of the feed direction, such as a drive sprocket and a driven sprocket.The drive side sprocket is used to drive the feed conveyor via a power transmission mechanism such as a speed reducer. It is 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 transport path is fed into the packaging machine section, specifically, the packaging material bent by the cylinder-making device on the transport path while the rear part is pushed by the pusher attachment of the traveling endless chain. The supply conveyor is driven at a speed based on the data input of the packaging capacity.

By the way, when the product to be packaged by the horizontal bag-making filling and packaging machine is an individual food such as a confectionery, in the supply conveyor, spills from the food may adhere to the endless chain or pusher attachment. .. The food debris attached to the chain is likely to be caught in the chain, and it is difficult to scrape it off with a cleaning tool. Since the attached food waste may deteriorate the hygienic condition of the horizontal bag-making filling and packaging machine, it is necessary to keep it clean at any time or periodically.

If the product residue is severely attached to the supply conveyor, remove the endless chain from the sprocket and clean the endless chain and the pusher attachment attached to it, or remove the endless chain from the supply conveyor to remove empty space from the conveyor. Thorough cleaning is done to clean the inside. Removing the chain of the supply conveyor from the sprocket for cleaning is very inferior in workability, and it is also possible to wind it around the sprocket again and return it to the original state. As a method for easily cleaning such a supply conveyor, a method for enabling easy removal of an endless chain described in Patent Document 2 and a supply described in Patent Document 3 as described below. A method of removing the conveyor from the main body of the horizontal bag-making filling and packaging machine has been proposed.

If the product residue is lightly adhered or has been cleaned to some extent, such as a product change, it is relatively easy to blow the product residue by air blowing to remove it without removing the endless chain from the sprocket. Cleaning is done. In this case, the cleaning is performed by opening the safety cover on the side surface of the supply device and applying an air blow to the portion that needs to be blown off. However, it is difficult to perform cleaning all at once due to the structure of the supply conveyor and the restrictions on access to the endless chain from the outside. Further, the supply conveyor is usually covered with a safety cover from the viewpoint of hygiene or safety, and when the safety cover is opened, power is supplied to the servomotor for driving the supply conveyor by the operation of the safety circuit. It has been cut off. The supply conveyor (as well as the packaging machine) cannot be operated without the safety cover closed, and the safety cover cannot be opened unless the supply conveyor is stopped. This situation complicates the cleaning work of the endless chain and pusher attachment.

In order to clean the endless chain around its entire circumference, the endless chain must be manually moved to sequentially move the cleaning range. That is, the supply conveyor is stopped, the safety cover is opened, and when the visible portion (range) of the chain is cleaned, the safety cover is closed and the supply conveyor is moved a little. When the chain has moved slightly and the uncleaned part is accessible, stop the supply conveyor. The safety cover can be opened by stopping it. By repeating the operations of stopping and restarting the supply conveyor, restarting the operation of the safety cover, and cleaning the predetermined range, the endless chain and pusher attachment are cleaned little by little in a certain range each time. It is possible to grab an endless chain or pusher attachment and move it manually, but the motor shaft with a mechanism such as a reducer is still connected, and the reducer will be driven as a speed increaser from the output side. Therefore, it is a work that requires a great deal of force. Therefore, cleaning of the supply conveyor requires time and labor, and workability and efficiency are not good.

Therefore, there has been proposed a supply conveyor for a horizontal bag-making filling and packaging machine in which the chain of the supply conveyor for supplying the product 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 from a drive gear driven by a servomotor via a transmission gear, and the transmission gear has a structure for engaging/disengaging the drive gear. It is configured to be disengageable by a clutch. When the clutch is disengaged and the transmission gear is disengaged from the drive gear, the connection between the servo motor and the chain is released, so the endless chain can be moved manually, and the part of the endless chain that appears when moved can be cleaned. Become. It is the same work as sending the endless chain a little and stopping it, but by attaching a clutch, it is not necessary to manually operate the servo motor while rotating the reducer in the opposite direction (that is, as a speed increaser). ..

When the operation switch of the horizontal bag-making filling and 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 and various conveyors are used. Is in the driving mode to drive the. When you try to clean the various conveyors of a horizontal bag-filling and packaging machine by removing dust and debris attached to the chain, etc., manually move the speed reducer in the opposite direction when 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 an excessive force. In order to clean the chain without using excessive force, rely on a brute force method such as removing the endless chain from the sprocket, or fit the drive path from the drive motor to the sprocket, as described above. -It was necessary to add a hardware structure such as a disengagement mechanism (clutch).

In the horizontal bag-making filling and packaging machine, the carry-in side conveyor and the discharge side conveyor are configured as a transfer device (shuttle conveyor) that can be opened and closed, and the heater blocks above and below the end seal device can be opened and closed when the shuttle conveyor is open. There is proposed a horizontal wrapping machine which is configured in association with the above and facilitates cleaning of the heat-sealing surface of the heater block (Patent Document 2). Since the cam mechanism interlocks the vertical opening/closing of the end seal device and the forward/backward movement (forward/backward opening/closing) of the transition device, the space above the heat sealing surface is opened to facilitate cleaning.

Regarding the operation control of the supply conveyor in the horizontal bag-making filling and packaging 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 monitor function of a servo amplifier included in the servo motor is used to recognize the fact and stop the operation of the supply conveyor.

JP 2012-224442 A JP, 2012-188155, A JP, 2006-335466, A

Therefore, regarding the cleaning of the conveyor device equipped in the horizontal bag-making filling and packaging machine, measures such as disassembling and reassembling the structure that conventionally involves troublesome work, adding a hardware structure that causes an increase in cost, or forceful operation are taken. However, the software-based approach of focusing on the control of the drive source that drives the conveyor device and devising ingenuity in the operation control of the drive source is easy and inexpensive for the user. There is a problem to be solved in terms of enabling cleaning.

The object of the present invention is to improve the operation control of the drive source for driving the conveyor device with software in an existing horizontal bag-making filling and packaging machine without changing the hardware configuration. It is an object of the present invention to provide a horizontal bag-making filling and packaging machine that requires less labor, is simple, and can be inexpensively cleaned.

The horizontal bag-making filling and packaging machine according to the present invention,
A packing material feeding device that pulls out the band-shaped packing material from the packing material roll and sends it to the downstream side,
A tube-making device in which the strip-shaped packaging material is molded into a substantially tubular packaging material and the feed direction of the substantially tubular packaging material is a horizontal direction,
A center seal device for molding the substantially tubular packaging material into a tubular packaging material by applying a center seal to an overlapping side edge portion extending in the longitudinal direction of the approximately tubular packaging material,
A product supply conveyor device for sequentially supplying products to be packed into the tubular packaging material,
An end seal device capable of laterally contacting and separating the tubular packaging material with respect to the tubular packaging material and contacting the tubular packaging material to perform an end seal,
A shuttle conveyor device for moving the tubular packaging material containing the product therein in association with the end seal, the packaging material feeding device, the center sealing device, the product supply conveyor device, the end sealing device, and In a horizontal bag-making filling and packaging machine equipped with a control device for controlling the operating speed of the shuttle conveyor device,
In the control device, a normal operation mode in which the product supply conveyor device and the shuttle conveyor device are operated at a packaging operation speed determined from a packaging speed, and a product supply conveyor device that is a speed sufficiently slower than the packaging operation speed. Alternatively, a cleaning operation mode in which the shuttle conveyor device is operated at a speed suitable for cleaning is selectable.

According to the horizontal bag-making filling and packaging machine of the present invention, in the control device, the cleaning operation mode is prepared in addition to the normal normal operation mode, and the operator can select either mode. .. The operator can select the cleaning operation mode when attempting to clean the conveyor device provided in the horizontal bag-making filling and packaging machine. In the cleaning operation mode, since the conveyor device is operated at a low cleaning speed that is sufficiently lower than the normal packaging operation speed, the operator can safely perform the cleaning operation of the conveyor device in operation, and during the cleaning. The concern that the conveyor system of the present invention poses a safety risk to the operator is avoided. In addition, it is possible to perform cleaning while the conveyor device is being operated by the drive source, and it is easier for the operator to perform cleaning because it is easier to clean when the conveyor device is rotating and the cleaning location moves sequentially in front of you. You can respond to requests.
The speed suitable for cleaning the conveyor device in the cleaning operation mode may be a low cleaning speed sufficiently slower than the packaging operation speed, or the conveyor device may be stopped when cleaning is likely to take time. Can be included.

In this horizontal bag-making filling and packaging machine, in the control device, one or both of the product supply conveyor device and the shuttle conveyor device can be selected as the cleaning operation mode.
If the user decides that one of the conveyors needs to be cleaned, he/she can select one of the conveyors to be cleaned and operate at a slower cleaning speed, but both conveyors must be synchronized at a slower speed. It may be operated at a cleaning speed. When both conveyor devices are operated at the synchronized low cleaning speed, the entire horizontal bag-making filling and packaging machine is also operated at the synchronized low cleaning speed, which eliminates the need for selecting the conveyor device. The control procedure can be simplified instead. In this case, the operation of the sealing device such as the center sealing device and the end sealing device can be stopped. Alternatively, not only the conveyor device, but the entire horizontal bag-making filling and packaging machine including other center seal devices and end seal devices can also be operated at a sufficiently slow slow cleaning speed.

In this horizontal bag-making filling and packaging machine, the control device, when the cleaning operation mode is ended, one or both of the conveyor devices that have been in the cleaning operation mode, the operation start criterion in the normal operation mode. It can be driven to the position and then stopped.
When the control device is configured as described above, the position of the conveyor device occupies the reference position at the start of the operation in the normal operation mode, and the normal operation mode can be smoothly shifted.

In this horizontal bag-making filling and packaging machine, it is possible to monitor the load that acts on the drive motor by using the load monitoring function provided in the drive motor that drives the conveyor device, and the control device can monitor the load in the cleaning mode. As to the conveyor device to be cleaned, it is determined that a load to be stopped is generated in the conveyor device in response to the load monitor function monitoring a load equal to or higher than a sufficiently low detection level set in advance. The conveyor device can be stopped.
As a means for monitoring the load related to the conveyor device, it is possible to use a load monitor function that is available in the drive motor that drives the conveyor device and that can monitor the load acting on the drive motor. it can. What can be monitored as the load acting on the drive motor can be the output torque when the drive motor is a servo motor and the current flowing through the servo amplifier provided in the servo motor.
The function itself to monitor the load in the conveyor device driven in the cleaning operation mode is provided in the drive motor such as the existing servo motor, and changing the detection level of the load monitor function does not change the hardware. Rather than relying on it, this can be done by software setting of the drive motor. By setting the load detection function of the drive motor to a sufficiently low level for load detection, even if the increase in load encountered during low-speed operation of the conveyor is small, that is The operation of the conveyor device can be stopped immediately when monitored by the monitor function of. As a result, when an operator who is cleaning a conveyor device operating at a low cleaning speed touches the conveyor device and the load is different from the normal load even when the load is light, the drive motor is immediately stopped and the conveyor device is stopped. Since it is stopped, the operator can safely clean the conveyor device.

In this horizontal bag-making filling and packaging machine, the conveyor device is provided with a safety cover for covering the conveyor device, and when the cleaning operation mode is selected for the operation of the conveyor device in the control device, The control device can operate the conveyor device in the cleaning operation mode even when the safety cover is opened.
In the existing horizontal bag-making filling and packaging machine, for example, a safety cover for covering the shuttle conveyor device is provided. These safety covers have a safety design in which the operation of the packaging machine is stopped when opened, and the packaging machine cannot be operated when the safety cover is open. Therefore, to clean the conveyor device, (1) stop the operation of the packaging machine, open the safety cover, operate the conveyor device manually, clean the conveyor device, repeat the manual operation and cleaning of the conveyor device, and complete the cleaning. Occasionally, the safety cover is closed, the packaging machine is restarted, or (2) the packaging machine is stopped, the safety cover is opened, the conveyor device is cleaned, the safety cover is closed, the packaging machine is slightly operated, and the packaging machine is operated. The complicated procedure of stopping the operation of (returning to the beginning), repeating the above procedure, closing the safety cover at the end of cleaning, and restarting the operation of the packaging machine was taken.
In the horizontal bag-making filling and packaging machine according to the present invention 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, the packaging machine Is not stopped, but the conveyor device is operated (drives the drive motor) at the low cleaning speed specified in the cleaning operation mode. Therefore, the operator can start cleaning the conveyor device when the safety cover is opened.

In a horizontal bag-making filling and packaging machine in which a safety cover is arranged on a conveyor device, the control device can interlock operation/stop of the conveyor device and opening/closing of the safety cover.
As an example of the interlocking contents, when the operator selects the cleaning operation mode prepared for the control device and the packaging machine shifts to the cleaning operation mode, the operation of the packaging machine automatically stops and stops when the safety cover is opened. The conveyor device in the locked state can be cleaned and the packaging machine can automatically start at a constant speed (slow and slow speed) when the safety cover is closed. In this case, the operator's only operation for cleaning the conveyor device is to open and close the safety cover, and it is not necessary to operate the packaging machine.
As another example of interlocking, when the safety cover of the conveyor device is opened, immediately or after a predetermined short time, the operation of the conveyor device is started at the operation speed specified in the cleaning operation mode. can do. Further, when the safety cover is closed, the operation of the conveyor device may be stopped immediately or after a predetermined short time, or the conveyor device may be continuously operated at the same operation speed.

In this horizontal bag-making filling and packaging machine, the low speed cleaning speed of the conveyor device can be changed to an arbitrary speed or can be selected from a plurality of speeds in the cleaning operation mode. For example, the low speed cleaning speed of the conveyor device can be changed to a default speed, a lower speed, or a stop speed. Further, it is possible to set an arbitrary speed (% ratio) with respect to the default speed. Careful cleaning of the conveyor system can be performed by changing the speed of the conveyor system to a speed slower than the slow cleaning speed or a stop mode.

In this horizontal bag-making filling and packaging machine, display means for displaying that the horizontal bag-making filling and packaging machine is operating in the cleaning operation mode is provided in response to the selection of the cleaning operation mode. You can
By displaying that the horizontal bag-making filling and packaging machine is operating in the cleaning operation mode by the display means, the operator concerned or another operator can recognize and confirm the operation mode of the horizontal bag-making filling and packaging machine. You can An example of the display means may be an optical display such as a lamp or a display, or an acoustic display such as an alarm sound.

In this horizontal bag-making filling and packaging machine, the product supply conveyor device is composed of an endless chain in which pusher attachments for supporting and conveying the rear part of the product are attached at predetermined intervals, and supported and driven by sprockets at both ends. And the shuttle conveyor device is composed of an intermediate conveyor device and a package unloading conveyor device in which front and rear conveyor ends are moved toward and away from the end seal device according to the operation. be able to.

According to the horizontal bag-making filling and packaging machine suitable for cleaning the conveyor device according to the present invention, in the control device, when the operator tries to clean one of the conveyor devices, the low speed cleaning is sufficiently slower than the normal packaging operation speed. It is possible to select a cleaning operation mode in which the conveyor device is operated at a speed. In the cleaning operation mode, by operating the conveyor device at a low cleaning speed, it is not necessary to manually move the conveyor device, and the conveyor device during cleaning creates a safety risk for the operator. There is nothing to do. Further, it is possible to perform cleaning while the conveyor device is being driven by the drive source, and it is easier for the operator to perform cleaning if the conveyor device is rotating and the cleaning points are sequentially moved in front of the eyes. You can respond to requests. In this way, the conveyor device is operated at a low cleaning speed that is sufficiently lower than the normal operation speed, so that the operator can safely perform the cleaning operation of the conveyor device with less labor.

It is a block diagram showing an example of a control device of a horizontal bag-making filling and packaging machine according to the present invention. It is a flowchart which shows an example of control of the conveyor apparatus performed by the control apparatus shown in FIG. FIG. 3 is a diagram showing an example of a display screen of a display device used in the horizontal bag-making filling and packaging machine shown in FIG. It is a perspective view which shows roughly an example of the horizontal bag-making filling packaging machine to which this invention can be applied. It is the schematic corresponding to the horizontal bag-making filling packaging machine shown in FIG. It is a side surface schematic diagram which expands and shows an example of the end seal apparatus and shuttle conveyor apparatus of the horizontal bag-making filling packaging machine shown in FIG.

An embodiment of the horizontal bag-making filling and packaging 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-making filling and packaging machine to which the present invention can be applied. The horizontal bag-making filling and packaging machine 1 is provided with a packaging material feeding device 2 which supports a packaging material roll (not shown) and which draws out a strip-shaped packaging material from the packaging material roll and sends it out to the downstream side in the upper center part thereof. The wrapping material feeding device 2 includes a winding holder 3a for supporting a wrapping material roll wound with a wrapping material, a wrapping material feeding roller 3b for sandwiching and feeding the wrapping material, and a cushion roller for maintaining a constant tension applied to the wrapping material. 3c, and a tension roller 3d that adjusts a packaging material entry angle and a distance to a cylinder-making device which will be described later, each of which has a well-known structure in a horizontal bag-making filling and packaging machine. Therefore, detailed description will be given here. Omit it.

The horizontal bag-making filling and packaging machine 1 also includes a tube-making device (former) 4 that bends a strip-shaped packaging material into a substantially tubular shape, and a product that is a packaging target in the packaging material that is bent by the tube-making device 4. It is equipped with a product supply conveyor device 5 for sequentially feeding the products at an equal pitch. The product supply conveyor device 5 itself is a conveyor device in which pusher attachments are attached to the endless chain at predetermined intervals, as in the conventional product supply conveyor device, and is driven by a drive motor. The feeding direction of the substantially tubular packaging material that has passed through the tube making device 4 is the horizontal direction, that is, the lateral direction of the horizontal bag-making filling and packaging machine 1. Since the product supply conveyor device 5 does not have a cover for covering the upper part, the product supply conveyor device 5 is open upward. The horizontal bag-making filling and packaging machine 1 further includes a center on a stacking side edge portion extending in the longitudinal direction of the substantially tubular packaging material by a set of meshed heat rollers downstream of the product supply conveyor device 5 in a substantially horizontal extension. A center seal device 6 is provided which seals and forms the band-shaped packaging material into a tubular packaging material. Downstream of the center seal device 6, a set of grained heaters and cutters are provided so that they can be brought into contact with and separated from the tubular packaging material in the transverse direction, and come into contact with the tubular packaging material to end-seal. An end seal device 7 for carrying out the above and a belt carrying type package carrying-out device 8 for carrying out the manufactured package (pillow package) to a boxing device or the like outside the packaging machine are provided. The end seal device 7 approaches and separates the tubular packaging material by, for example, a box motion operation at a position where the product is sandwiched in the front and rear direction of the tubular packaging material, and comes into contact with the tubular packaging material to provide an end seal. Give.

The center seal device 6, the end seal device 7, and the package unloading device 8 are provided with safety covers 6a, 7a, 8a for covering the respective devices from above. The operator can open and close the safety covers 6a, 7a, 8a by gripping the handles 6b, 7b, 8b attached to the safety covers 6a, 7a, 8a and operating them up and down. In the normal packaging operation, the center seal device 6, the end seal device 7 and the package carrying-out device 8 are operating at a considerable speed, so that the safety cover 6a is provided in order to ensure the safety of the operator and further to prevent foreign matter from entering. , 7a, 8a are closed. When cleaning the center seal device 6 and the end seal device 7, by rotating the safety cover covers 6a and 7a around the hinges and opening them, the operator visually checks the conveyor devices 6 and 7 and stains them. Etc. can be confirmed. In addition, although the package carrying-out device 8 is a belt conveyor type, it is less likely to be contaminated with product debris and can be individually cleaned. Therefore, here, the package carrying-out device 8 is a conveyor device to be cleaned in the horizontal bag-making filling and packaging machine. Does not include.

FIG. 5 is a schematic diagram of the horizontal bag-making filling and packaging machine corresponding to the horizontal bag-making filling and packaging machine shown in FIG. 4 and showing a state in which the product is supplied and the product is packaged by the packaging material. FIG. 5A is a schematic view seen from the side of the horizontal bag-making filling and packaging machine, and FIG. 5B is a schematic view seen from the top of the horizontal bag-making filling and packaging machine. The packaging material delivery device 2 delivers the strip-shaped packaging material Fw from the packaging material roll Fr supported by the winding holder 3a, and the packaging material feeding driven by the paper feeding servomotor 3e through an appropriate transmission mechanism. The belt-shaped packaging material Fw is sandwiched by the rollers 3b and sent out toward the cylinder manufacturing device 4. Referring to FIGS. 4 and 5, the horizontal bag-making filling and packaging machine 1 is a continuous operation type packaging machine, and forms the tubular packaging material Ft from the strip-shaped packaging material Fw that is continuously transferred in the lateral direction. At the same time, the product P is sent into the inside thereof to continuously produce pillow packages Bp, which are bag packages. The strip-shaped packaging material Fw is bent by the cylinder-making device (former) 4 until both side edge portions (overlapping portions) fe, fe of the packaging film Fw are attracted to each other to become a substantially tubular shape.

The strip-shaped packaging material Fw that has passed through the tube-making device 4 and is bent into a substantially tubular shape passes through the center seal device 6, and both side edge portions fe and fe that are overlapped at that time are center-sealed. Is molded into a tubular packaging material Ft. The center seal device 6 includes, in order from the upstream side of the feeding of the packaging material, a paper drawing roller section 10, a bar heater section 30 for heating disposed immediately after the downstream side, and a weighted roller section 20. .. In this embodiment, the center seal device 6 also serves as a paper drawing device. The paper pulling roller unit 10 is provided with a pair of paper-drawing rollers 11 and 12 that have been machined, and the rollers 11 and 12 are supplied with a driving force from the paper-drawing servomotor 13 and move in opposite directions. It is rotated at a synchronized speed. Between the peripheral surfaces of the paper drawing rollers 11 and 12, the overlapping side edge portions fe and fe of the strip-shaped packaging material Fw bent in a substantially tubular shape are sandwiched. The strip-shaped packaging material Fw is pulled by both side edge portions fe and fe by the pulling force acting from the paper pulling rollers 11 and 12, and is sent to the subsequent bar heater unit 30.

The bar heater unit 30 for heating is provided with a pair of bar heaters 31 and 32 that are close to each other so as to sandwich the side edge portions fe and fe of the strip-shaped packaging material Fw, and heat the side edge portions fe and fe by radiant heat. The unit weight roller unit 20 is disposed downstream of the bar heater unit 30. The basis weight roller unit 20 is provided with a set of the basis weight rollers 21 and 22 which are machined, and the basis weight rollers 21 and 22 are supplied with a driving force from the basis weight roller servo motor 23 and are synchronized in opposite directions. Rotated at speed. The paper pulling servo motor 13 and the weighted roller servomotor 23 are controlled so that the respective roller peripheral speeds of the paper pulling roller unit 10 and the weighted heater unit 20 become equal. In order to prevent the seizing of the packaging material when the feeding of the strip-shaped packaging material Fw is stopped for a long time, the bar heater unit 30 has an opening/closing mechanism (not shown) for bringing the bar heaters 31 and 32 close to and away from each other. It is preferable that A heat generating means (heater) is not embedded in the unit weight rollers 21 and 22, but the center seal is completed by pressing the side edge portions fe and fe heated by the bar heaters 31 and 32, and the bent packaging film. Fw is formed into a tubular packaging film Ft.

An end seal device 7 is arranged downstream of the center seal device 6. The end seal device 7 forms the end seal part Se of the bag B by end-sealing the tubular wrapping material Ft between the packages P, P that are continuous in the front-back direction. Through these steps, the pillow package Bp in which the package P is enclosed in the bag is sequentially manufactured. By incorporating a cutter (which is well known and not shown here) that cuts the packaging film at the end sealing portion Se into the end sealing device 7, the pillow packages Bp can be individually separated.

FIG. 6 is an enlarged schematic side view showing an example of a hand seal device and a shuttle conveyor device of the horizontal bag-making filling and packaging machine shown in FIG. As shown in FIG. 6, the end seal device 7 is a direct-acting type end sealer that is opened and closed by box motion with respect to the tubular packaging material Ft to which the center seal device 6 continuously feeds paper. It has 7c and 7d. The end sealers 7c and 7d are upper and lower heater blocks, which approach the tubular packaging material Ft from above and below during the closing operation and sandwich the tubular packaging material Ft together with the tubular packaging material Ft. The tubular packaging material Ft is end-sealed by being pressurized and heated while moving, and then separated from the tubular packaging material Ft in the vertical direction by the opening operation. The shuttle conveyor device 40 is configured as a set of conveyor devices in which an intermediate conveyor device 41 and a package carrying-out conveyor device 42 perform operations related to each other, and the product P is provided before and after the end seal device 7 performing a box motion operation. It has a function of moving the tubular packaging material Ft housed inside. In the shuttle conveyor device 40, the intermediate conveyor device 41 and the package carrying-out conveyor device 42 are respectively driven with drive pulleys 45 and 46 driven by a shuttle conveyor servomotor 43 via an appropriate transmission mechanism 44, and a conveyor conveying direction. The transfer pulleys 47 and 48 that approach and separate from each other, the intermediate pulleys 49 and 50 that move like moving pulleys according to the approach and separation of the transfer pulleys 47 and 48, and the guide pulleys 51 and 52 that fix other positions. I have it. In the transfer conveyor device 41 and the package carrying-out device 42, conveyor belts 53 and 54 are respectively wound around these pulleys 45, 47, 49, 51; 46, 48, 50 and 52 as shown in the drawing.

FIG. 6A shows a state in which the end sealers 7c and 7d of the end seal device 7 approach the tubular packaging material Ft to apply the end seal. In this state, the crossover pulleys 47 and 48 are in a separated state, and the end sealers 7c and 7d are allowed to approach and separate from the tubular packaging material Ft through the space therebetween. The pulleys of the shuttle conveyors 41 and 42 are in a state of being symmetrically arranged with respect to the central position. The drive pulleys 45 and 46 move the conveyor belts 53 and 54 of the shuttle conveyors 41 and 42 at the same speed.

FIG. 6B shows a state in which the end sealers 7c and 7d of the end seal device 7 are separated from the tubular packaging material Ft and allow passage of the tubular packaging material Ft. After the end seals are applied, when the end sealers 7c and 7d are separated from the tubular packaging material Ft, the intermediate conveyor device 41 and the transfer pulleys 47 and 48 of the package carrying-out conveyor device 42 come close to each other and the tubular product P is inserted. The packaging material Ft is placed on the conveyor belts 53 and 54 and moved from the intermediate conveyor device 41 to the package unloading conveyor device 42. In addition to the drive of the shuttle conveyor servomotor 43, the intermediate pulleys 49, 50 and the transfer pulleys 47, 48 are controlled to move in a direction parallel to the transport direction. As a result, the transfer pulleys 47, 48 are close to each other. By moving in the conveying direction (according to the principle of the moving pulley, it is moved at a double speed of the moving speed of the intermediate pulleys 49, 50), the belt conveyance of the tubular state of the packaging material Ft containing the product P is permitted. The manufactured pillow package Bp is delivered from the package unloading conveyor device 42 to the package unloading device 8 and carried out of the wrapping machine.

FIG. 1 is a block diagram showing an example of a control device provided in a horizontal bag-making filling and packaging 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-making filling and packaging machine. A specific control target controlled by each device is a drive motor (for example, a servo motor) suitable for controlling timing, position and speed in each device. In the control device 60, the packaging material feeding device 2, the product supply conveyor device 5, the center sealing device 6, the end sealing device 7, the shuttle conveyor device 40, and the package unloading device 8 are determined from the packaging speed as the operation mode control unit 61. The normal operation mode control unit 62 that operates at the specified timing and operation speed, and the speed that is sufficiently slower than the packaging operation speed and that is suitable for cleaning the product supply conveyor device 5 and the shuttle conveyor device 40 that are conveyor devices. The cleaning operation mode control unit 63 for operation is provided, and the operator can select any operation mode.

The operation mode selection means 70 is one of the input elements to the control device 60. In the mode selection means 70, the operator selects the normal operation mode or the cleaning operation mode as the operation mode performed by the horizontal bag-making filling and packaging machine 1. The operation mode selected by the mode selection means 70 is input to the operation mode designating section 64 of the control device 60. The operation mode designation unit 64 sends a designation signal to the operation mode control unit 61 according to the input operation mode to perform a control operation (normal operation mode control unit 62 or cleaning operation mode control unit 63). Determine. As the conveyor device to be cleaned, one of the product supply conveyor device 5 and the shuttle conveyor device 40 or both conveyor devices can be selected. Sealing devices such as the center seal device 6 and the end seal device 7 may be operated at a low cleaning speed in synchronization with the conveyor devices 5 and 40 even if the operation is stopped.

As another input element to the control device 60, there is a cleaning setting means 71 for setting the combination of the cleaning target conveyor device and the cleaning operation speed in the cleaning operation mode in detail. The detailed setting content set by the cleaning setting unit 71 is stored in the setting storage unit 65 of the control device 60. When selecting the cleaning operation mode, when the combination of the conveyor device to be cleaned in the cleaning operation mode, the cleaning operation speed, etc. is selected by the mode selection means 70, the selected information is operated from the operation mode designating unit 64. It is also sent to the mode control unit 61, and the operation mode control unit 61 can call the setting contents from the setting storage means 65.

Since the operating speed of the conveyor device is the low cleaning speed in the cleaning operation mode, the operator can basically safely clean the conveyor device. In order to handle an emergency situation such as an operator touching the cleaning device or a cleaning tool being caught, a load monitor function provided in a drive motor for driving the conveyor device is used. That is, regarding the existing load monitoring function provided in a drive motor such as a servo motor, even if a small load is applied to the drive motor by changing the load detection level to a sufficiently low detection level by software. Can be monitored. By lowering the detection level of the load monitoring function to a low load level, an operator who is cleaning the conveyor device operating at a low cleaning speed may touch the conveyor device, etc. When it is recognized by the monitor function, it is considered that a constant load is applied to the conveyor device even if the load is light and the load is small, and the drive motor is immediately stopped to stop the conveyor device.

As another input element to the control device 60, the operation load on the product supply conveyor device 5 and the shuttle conveyor device 40, specifically, the load monitor function 72 (current flowing in the drive motor) provided in the drive motors that drive the respective conveyor devices. , The generated torque can be monitored), in the control device 60, the load determination unit 66 receives the monitor information of the load monitor function 72 provided in the drive motor, and the operation mode control unit 61 to which the determination result is input. In, the operation of the conveyor device, that is, the drive motor for driving the conveyor device is controlled according to the determination result. The operating load determination level in the load determining unit 66 (load detection level of the load monitor function) is set to a sufficiently low level by software so that the operation of the conveyor device is stopped even when a slightly increased load is detected. Therefore, it is preferable to ensure the safety of the cleaning of the conveyor device by the operator.

For cleaning the shuttle conveyor device 40, it is necessary to open the safety covers 6a, 7a provided on the center seal device 6 and the 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 for detecting opening/closing of the safety covers 6a and 7a is provided. The detection signal of the safety cover open/close sensor 73 is input to the cover open/close determination unit 67 in the control device 60. The determination result of the cover open/close determination unit 67 is input to the operation mode control unit 61. In the normal operation mode, if any of the safety covers 6a and 7a is opened, the packaging machine 1 can be set so that the normal operation operation cannot be performed to avoid danger. Since the operation speed is low, when the cover open/close determination unit 67 determines that the safety covers 6a and 7a are open, the shuttle conveyor device 40 is operated in the cleaning operation mode (or operation is enabled). Therefore, the operation/stop of the shuttle conveyor device can be operated with another operation switch). If the safety covers 6a and 7a are opened/closed so that the shuttle conveyor device 40 is operated/stopped in the cleaning operation mode, the safety covers 6a and 7a serve as a switch for operating/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 slow cleaning speed can be set to a plurality of speed levels (see the display screen of the display device described later). In the cleaning operation mode, the conveyor device is operated at a cleaning speed sufficiently lower than the normal operation speed, so that the operator can safely perform the cleaning operation of the conveyor device in operation. In addition, some operators require that the conveyor device is operating and it is easier to clean if the cleaning location moves sequentially in front of the eyes, so cleaning is performed while driving the conveyor device at a low speed by the drive motor. can do. The speed suitable for cleaning the conveyor device in the cleaning operation mode is generally a slow cleaning speed that is sufficiently slower than the packaging operation speed, and it is recommended to stop the conveyor device when cleaning may take extra time. Can be included.

FIG. 2 is a flow chart showing an example of control of the conveyor device performed by the control device shown in FIG. Hereinafter, the apparatus configurations shown in FIGS. 1 and 4 to 6 will be described with reference to the reference numerals as appropriate. According to the example shown in FIG. 2, when the horizontal bag-making filling and packaging machine 1 is turned on and the control flow is started, first, it is determined whether the operation mode of the packaging machine 1 is selected (selected by the mode selection means 70). It is determined whether or not (step 1; abbreviated as “S1”; the same applies hereinafter). If the operation mode is not selected, it shifts to the standby state and waits until the operation mode is 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 wraps the product, so the normal operation mode control unit 62 controls each device (S3). The details of the normal operation mode in S3 are self-explanatory in the packaging machine 1 and will not be described here.

When the selected operation mode in S2 is the cleaning operation mode, the control is set depending on which conveyor device the conveyor device selected by the operator is to be cleaned (S4). In the controller 60, the cleaning operation mode controller 63 controls each device for cleaning the conveyor device. The conveyor devices to be cleaned can be both conveyor devices 5, 40, but in the actual description and for the sake of simplicity, they will be described as being cleaned one by one. It is determined whether the conveyor device to be cleaned is a conveyor device covered with a safety cover (S5). In the case of a conveyor device (product supply conveyor device 5) that does not have a safety cover, the product supply conveyor device 5 is operated at a low cleaning operating speed during which the operator performs the cleaning of the product supply conveyor device 5. (S6).

If the determination in S5 is "Yes", it is determined whether or not the safety cover 6a or 7a of the conveyor device (shuttle conveyor device 40) having the safety cover in the cleaning operation mode is opened (S7). ). If the safety cover is not opened, it is determined that cleaning is not ready, the operation of the shuttle conveyor device 40 is stopped (S14), and the safety cover is opened. When the safety cover is opened, the operation at the low cleaning speed is executed (S8). By successively determining whether the safety cover is opened or closed, the opening/closing of the safety cover and the operation/stop of the shuttle conveyor device 40 at a low cleaning speed can be linked.

In any of the conveyor devices, when operating at a low cleaning speed, the load on the conveyor device is monitored by the load monitor function 72 provided in the drive motor for driving the conveyor device, and the monitored load is monitored. It is determined whether or not exceeds the set load level (threshold value) (S9; determination by the load determination unit 66). If the monitored load exceeds the set load level, the operation is stopped because the load applied to the conveyor device is slightly above a certain level (S11). It waits for the input of whether or not the cause of the excessive load is removed (S12). If the cause is removed in the determination of S12, the process returns to S8 and the operation at the low cleaning speed is executed. When the load monitored by the load monitor function 72 does not exceed the set load level (threshold value), it is determined whether or not the cleaning operation mode is to be ended (S10). When the cleaning operation mode is ended, the operation of the conveyor device that has been in the cleaning operation mode is stopped, the return operation is performed to the reference position for starting the operation in the normal operation mode, and then the operation is stopped (S13). By doing so, at the start of the operation in the normal operation mode, the position of the conveyor device occupies the reference position, and the normal operation mode can be smoothly shifted. If it is determined in S10 that the cleaning operation mode has not ended, the process returns to S5, and the operation at the low cleaning speed is continued, provided 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-making filling and packaging machine shown in FIG. The display device is provided in the packaging machine 1 and can be used as a monitor for showing various operational settings or the operating state of the packaging machine 1. On the display screen 80 of the display device, the conveyor device to be cleaned can be selected in the cleaning operation mode. By putting a mark in a check box or the like, one or both conveyor devices can be selected. The display screen 80 can also change the low speed cleaning speed of the selected conveyor device to a desired speed. The change in speed can be specified prior to the start of cleaning or can be enabled even during cleaning. The low speed cleaning speed can be selected from a default speed, a slower speed, or a stop mode, and can also be changed to an arbitrary speed by changing the ratio to the default speed. Careful cleaning of the conveyor system can be performed when changing the speed of the conveyor system to a speed slower than the slow cleaning speed or to a stop mode. Although not shown, by changing the speed of the conveyor device to a speed slightly higher than the low speed cleaning speed, it is possible to move a portion that does not need to be cleaned at a relatively high speed.

In the horizontal bag-making filling and packaging machine 1, when the load acting on the conveyor device is monitored by the monitor function of the drive motor and the load above 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 drive current or drive torque that appears as a reaction of the load to the drive motor. On the display screen 80 of the display device, when the cleaning operation mode is selected, the load detection level can be set as several levels. Also, it can be set to an arbitrary load level.

The horizontal bag-making filling and packaging machine 1 can be provided with display means for displaying that the packaging machine 1 is operating in the cleaning operation mode. By displaying that the horizontal bag-making filling and packaging machine is operating in the cleaning operation mode by the display means, any operator around the packaging machine 1 can operate the horizontal bag-making filling and packaging machine in the cleaning operation mode. You can recognize and confirm that you are. An example of the display means may be an optical display such as a lamp or a display, or an acoustic display such as an alarm sound. The display screen 80 shows an example of displaying that “the cleaning operation is being performed when the lamp is lit”. The load on the drive motor of each conveyor is monitored, and a load that is slightly higher than the load at low speed rotation is set as a detection level as a threshold value.In the cleaning operation mode, the surrounding operators are alerted by a display device such as a buzzer. However, if the load that exceeds the threshold value is monitored even a little, the conveyor device is stopped. By doing so, when there is a safety cover that covers the conveyor device, the conveyor device can be cleaned while ensuring safety even when the safety cover is open.

1 Horizontal bag-making filling and 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 (former) 5 Product supply conveyor device 6 Center seal device 7 End seal device 7c, 7d End sealer 8 Package discharge 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 Eye-giving roller section 21, 22 Coated roller 23 Servo motor for coated roller 30 Bar heater unit 31, 32 Bar heater 40 Shuttle conveyor device 41 Intermediate conveyor device 42 Package unloading conveyor device 43 Shuttle conveyor servo motor 44 Transmission mechanism 45, 46 Drive pulley 47, 48 Crossover pulley 49, 50 Intermediate pulley 51, 52 Guide pulley 53, 54 Conveyor belt 60 Control device 61 Operation mode control unit 62 Normal operation mode control unit 63 Cleaning operation mode control unit 64 Operation mode designation unit 65 Setting storage unit 66 Load determination unit 67 Cover open/close 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 materials fe, fe Both side edge parts Ft Cylindrical packaging material B Bag P Product Bp Pillow packaging body

Claims (9)

A packing material feeding device that pulls out the band-shaped packing material from the packing material roll and sends it to the downstream side,
A tube-making device in which the strip-shaped packaging material is molded into a substantially tubular packaging material and the feed direction of the substantially tubular packaging material is a horizontal direction,
A center seal device for molding the substantially tubular packaging material into a tubular packaging material by applying a center seal to the overlapping side edge portion extending in the longitudinal direction of the approximately tubular packaging material,
A product supply conveyor device for sequentially supplying products to be packed into the tubular packaging material,
An end seal device capable of laterally contacting and separating the tubular packaging material with respect to the tubular packaging material and contacting the tubular packaging material to perform an end seal,
A shuttle conveyor device for moving the tubular packaging material containing the product therein in association with the end seal, the packaging material feeding device, the center sealing device, the product supply conveyor device, the end sealing device, and In a horizontal bag-making filling and packaging machine equipped with a control device for controlling the operating speed of the shuttle conveyor device,
In the control device, a normal operation mode in which the product supply conveyor device and the shuttle conveyor device are operated at a packaging operation speed determined from a packaging speed, and a product supply conveyor device that is a speed sufficiently slower than the packaging operation speed. Or a cleaning operation mode in which the shuttle conveyor device is operated at a speed suitable for cleaning can be selected. The horizontal bag-making filling and packaging machine according to claim 1, wherein, in the control device, one or both of the product supply conveyor device and the shuttle conveyor device can be selected in the cleaning operation mode. .. When the cleaning operation mode is terminated, the control device operates one or both of the conveyor devices that have been in the cleaning operation mode to a reference position for starting operation in the normal operation mode and then stop the conveyor device. The horizontal bag-making filling and packaging machine according to claim 1 or 2. It is possible to monitor the load acting on the drive motor by using the load monitoring function provided in the drive motor that drives the conveyor device, and the control device is configured to clean the conveyor that is a cleaning target in the cleaning mode. Regarding the apparatus, in response to the load monitoring function monitoring a load equal to or higher than a sufficiently low detection level preset, the conveyor apparatus is stopped as a load to be stopped is generated. The horizontal bag-making filling and packaging machine according to any one of claims 1 to 3. The conveyor device is provided with a safety cover for covering the conveyor device, and when the cleaning operation mode is selected for operating the conveyor device in the control device, the control device opens the safety cover. The horizontal bag-making filling and packaging machine according to any one of claims 1 to 4, which is configured to operate the conveyor device in the cleaning operation mode even in a state in which the bag-type filling and packaging machine is used. The horizontal bag-making filling and packaging machine according to claim 5, wherein the control device is configured to interlock operation/stop of the conveyor device and opening/closing of the safety cover. The horizontal bag-making process according to any one of claims 1 to 6, wherein in the cleaning operation mode, the low speed cleaning speed of the conveyor device can be changed to an arbitrary speed or can be selected from a plurality of speeds. Filling and packaging machine. 8. A display means is provided for displaying that the horizontal bag-making filling and packaging machine is operating in the cleaning operation mode in response to the selection of the cleaning operation mode. The horizontal bag-making filling and packaging machine according to any one of 1. The product supply conveyor device, a pusher attachment for supporting and conveying the rear portion of the product is attached at a predetermined interval, and is a chain conveyor composed of an endless chain supported and driven by sprockets at both ends, 9. The shuttle conveyor comprises an intermediate conveyor device and a package carrying-out conveyor device in which front and rear conveyor ends are moved toward and away from the end seal device according to the operation, and a package carrying-out conveyor device. The horizontal bag-making filling and packaging machine according to the item.

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