JP6987382B2 - Vertical bag filling and packaging machine - Google Patents

Description

The present invention is a vertical type product in which a bag is manufactured from a tubular packaging material, and a bag package is manufactured by laterally sealing the tubular packaging material into which the product to be packaged is loaded by a horizontal sealing device. Regarding bag filling and packaging machines.

Conventionally, as a bag-making / packaging machine, for example, a vertical bag-making / filling / packaging machine disclosed in Patent Document 1 and as outlined in FIG. 5, which is a perspective view, is often used. In the vertical bag-making filling and packaging machine 50 shown in FIG. 5, the strip-shaped packaging material Fw is formed into a substantially tubular shape by the former 51 so that the side edge portions fe and fe are overlapped in a palm-like shape, and is elongated (upper and lower). Or, while traveling in the vertical direction, the vertical sealing portion Sc is applied to both side edge portions fe and fe by the vertical sealing device 52, so that the tubular packaging material Ft is formed. The product S, which is a package, is put into the inside of the tubular packaging material Ft through the filling cylinder 53. The horizontal sealing device 54 sandwiches the tubular packaging material Ft from the outside to apply the horizontal sealing to the tubular packaging material Ft, whereby a bag package Bp formed in advance and in which the product S is packaged is manufactured. At the same time, a horizontal seal portion Se on the bottom side of the bag B into which the product S is loaded is formed. On the left and right sides of the outer periphery of the filling cylinder 53, a packaging material feeding device 55 (shown only on one side) which is composed of a belt mechanism and feeds by sandwiching the tubular packaging material Ft is arranged. For convenience of illustration, the bag package Bp is indicated by the reference numeral Se only on the horizontal seal on the bottom side.

The horizontal seal device 54 is arranged further below the lower end of the filling cylinder 53 with the tubular packaging material Ft interposed therebetween, and includes horizontal seal blocks 54a and 54b that operate to approach and separate from each other. The horizontal seal blocks 54a and 54b sandwich the tubular packaging material Ft in a direction crossing from the outside when approaching, and form a bottom horizontal seal portion Se for the bag B, and an upper horizontal sealer portion and a bag package. It constitutes a lower lateral sealer portion that forms a lateral seal portion Se on the top side of Bp. The bag package Bp is manufactured by putting the product S inside the tubular packaging material Ft and applying the horizontal sealing portion Se in the transverse direction by the horizontal sealing device 54.

The horizontal sealing device 54 further includes a cutter device 56 that cuts through the tubular packaging material Ft. In the cutter device 56, a cutter blade 56a is disposed between the upper and lower lateral sealer portions of one lateral seal block 54a, and a groove 56b into which the cutter blade 56a can enter is formed in the other lateral seal block 54b. Has been done. When both lateral seal blocks 54a and 54b approach each other and sandwich the packaging material, the tubular packaging material Ft is welded in the transverse direction to form the lateral sealing portion Se, and at the same time, the cutter blade 56a is driven in the advancing direction to form a tubular shape. Cut through the packaging material Ft. At the lower end of the filling cylinder 53, a pair of tension guides 59, 59 for tensioning the tubular packaging material Ft on both outer sides in the radial direction are provided so as to extend diagonally downward.

In the vertical bag-making filling and packaging machine 50, the vertical sealing device 52 includes a pair of openable and closable vertical sealing blocks 52a and 52b that are elongated along the extending direction of both side edge portions fe and fe of the strip-shaped packaging material Fw. The vertical seal blocks 52a and 52b are heat-sealed to form the vertical seal portion Sc when sandwiching the side edge portions fe and fe that are in the overlapped state during the closing operation, and when the vertical seal portion Sc is performed, the vertical seal blocks 52a and 52b are opened. The opening operation allows the side edge portions fe and fe to pass through the gap created between the vertical seal blocks 52a and 52b.

In the vertical bag-making filling and packaging machine 50, the packaging material is intermittently fed according to the packaging operation. A vertical sealing device during a short period of time when the product S is put into the tubular packaging material Ft and the feeding of the curved packaging material in which the strip-shaped packaging material Fw and its side edge portions fe, fe are brought close to each other is stopped. 52 sandwiches both side edge portions fe and fe to form a vertical seal portion Sc, and the horizontal seal device 54 forms a horizontal seal portion Se to manufacture a bag package Bp. By configuring the vertical sealing device 52 so that it can operate in a box motion, it is possible to speed up the feeding of the packaging material.

In this type of vertical bag-making filling and packaging machine (hereinafter abbreviated as "vertical packaging machine"), on the upstream side, it handles the feeding of packaging materials supplied to the vertical packaging machine and the supply and input of products. When an event to be done occurs, when the structure of the vertical packaging machine itself needs to be inspected, or when there is a problem in the processing of the bag package on the downstream side of the vertical packaging machine. Is performed by temporarily stopping the operation of the main structure of the vertical packaging machine, for example, the packaging material feeding device, the vertical sealing device, or the horizontal sealing device to stand by. When the problem is solved, the standby state of the vertical wrapping machine is released and each operation is restarted.

When the vertical wrapping machine is on standby, the seal block of the horizontal sealing device is in the open state. When the standby state is released and the vertical packaging machine resumes the packaging operation, the restart operation begins with the product being charged into the filling cylinder. Since the horizontal sealing device is in the open state, the loaded product is received by falling inside the tubular packaging material and colliding with the bottom of the tubular packaging material. Since the bottom of the tubular packaging material is a horizontal sealing portion formed by applying heat sealing before waiting, the impact force when the falling product collides with the bottom of the tubular packaging material is It acts to peel off the seal that should have been welded to the horizontal seal portion from the inside of the bag, and in the worst case, the seal at the bottom of the bag may be broken, so that the so-called bottom of the bag may come off.

In the conventional vertical packaging machine, the packaging operation including the start and end (stop and restart of the packaging operation) at the time of the event, that is, the operation of the product loading, the feeding of the tubular packaging material, and the operation of the horizontal sealing device. Is shown in FIG. 6, which is a process diagram, the time chart thereof is shown in FIGS. 3 (a) and 3 (b), and the flow of the lateral sealing operation is shown in FIG. 4 (b). .. The vertical packaging machine may be a vertical bag-making filling and packaging machine as shown in FIG. 5, and a part thereof is schematically shown in FIG. 6 (reference numerals are shown in FIG. 5). It follows things). 6 (a) to 6 (c) show an outline of the packaging operation at major points in the normal packaging operation of the vertical packaging machine 50. FIG. 6A shows a bag package Bp in which the horizontal seal device 54 closes to form a horizontal seal portion Se at the upper end of a bag B formed in advance and in which the product S is packaged. Along with manufacturing, a horizontal seal portion Se on the bottom side of the subsequent bag B is formed, indicating a state in which the product S is charged into the subsequent bag B. In FIG. 6B, after the state shown in FIG. 6A, the lateral sealing device 54 opens and the subsequent bag B into which the product S is loaded is laterally fed by the paper feed of the tubular packaging material Ft. It shows a state of being lowered through the space between the open lateral seal blocks 54a and 54b of the seal device 54. FIG. 6 (c) shows the position where the bag B into which the product S is loaded is subjected to the horizontal sealing operation by the horizontal sealing device 54 by the paper feed of the tubular packaging material Ft after the state shown in FIG. 6 (b). It shows the state of being further lowered to. When the vertical packaging machine 50 does not receive the standby command and continues the normal packaging operation, the process returns from FIG. 6 (c) to FIG. 6 (a), and the following steps are repeated to produce the product S. The packaged bag package Bp is continuously manufactured.

FIG. 3A is a time chart in a normal operation state, in which the paper feed speed by the paper feed device 55, the closing operation and opening operation speeds of the horizontal sealing device 54, and the product S during the packaging cycle are shown. The ON / OFF timing of the fall of the paper is shown. FIG. 6A corresponds to the state at time t (a) when the paper feed shown in FIG. 3A has already stopped, the lateral sealing device 54 has finished the closing operation, and the product S is falling. ing. Further, FIG. 6B corresponds to the state at time t (b) when the dropping of the product S is finished, the opening operation of the horizontal sealing device 54 is finished, and the paper feeding is started. There is. Then, in FIG. 6 (c), although the paper feed is continued thereafter, the state at the time point t (c) immediately before the lateral sealing device 54 starts the closing operation and the product S starts falling is reached. It corresponds. Time points t (a), t (b) and t (c) are sequentially repeated as the packaging cycle progresses. Looking at such a horizontal seal operation in a flowchart, as shown in FIG. 4B, the flow is always IN at regular intervals, and it is determined whether or not the current timing of the horizontal seal operation is present (step 11). It is abbreviated as S11. The same applies hereinafter). If it is not the timing of the horizontal seal operation, the flow is output as it is, but if it is the timing of the horizontal seal operation, it is determined whether the product S has been dropped or whether the dropped product has been detected (S12). If the product S is dropped or detected at the discretion of S12, the lateral sealing device is set to the fully closed operation (S13), which corresponds to the time t (a) in FIGS. 6 (a) and 3 (a). There is. If there is no drop or detection of the product S at the judgment of S12, the lateral sealing device outputs the flow as it is without closing.

In response to any event occurring in the vertical packaging machine, a wait command may be given to interrupt the packaging operation. In such a case, the state shown in FIG. 6 (c) in the normal packaging operation is shifted to the operation shown in FIG. 6 (d) for waiting. That is, as shown in FIG. 6 (d) and at time t (d) in FIG. 3 (a), the horizontal sealing device 54 closes and the tubular packaging material Ft is subjected to horizontal sealing to form a bag package. Although Bp is manufactured, since the input of the product S for the next packaging is stopped, the product S does not fall into the tubular packaging material Ft. Next, as shown in FIG. 6 (e) and at time t (e) in FIG. 3 (a), the lateral sealing device 54 enters the standby state in the opened state after the opening operation, and the packaging operation is performed. Is on standby, which was interrupted. Since the cutter device is often incorporated in the horizontal sealing device 54, the bag package Bp is separated from the tubular packaging material Ft with the horizontal sealing operation. That is, after the horizontal sealing device 54 is closed to form the horizontal sealing portion Se on the tubular packaging material Ft, the tubular packaging material Ft is cut to separate the bag package Bp, and then the horizontal sealing device 54 is open. It will stop and the vertical wrapping machine will be in a standby state. Looking at the horizontal seal operation at this time in the flowchart shown in FIG. 4 (b), as shown in FIG. 3 (b), the command for the horizontal seal operation is not issued and it is not the operation timing. Become. Therefore, the horizontal sealing device does not close and outputs the flow as it is, and the open state is maintained.

The packaging operation when the vertical packaging machine in standby is released from the standby state and restarts operation is shown in FIG. 6 ( h ), and the time chart is shown in FIG. 3 (b). When the standby vertical packaging machine 50 is released from the standby state at time t (h ), the packaging operation of the vertical packaging machine 50 resumes from the loading process of the product S, as shown in FIG. 3 (b). Will be done. After that, the same packaging cycle operation as the normal packaging operation (operations shown in FIGS. 6 (a) to 6 (c) and time chart shown in FIG. 3 (a)) is repeated. As described above, when the standby state is released and the product S falls in the tubular packaging material Ft, the falling product S is a horizontal seal portion provided immediately before the vertical packaging machine 50 enters the standby state. It is received in the bag B whose bottom is formed by Se. Since the product S collides with the lateral seal portion Se with the energy of falling, an impact acts on the lateral seal portion Se, so that the lateral seal portion Se may be damaged. The bag package Bp in which the horizontal seal portion Se is damaged should be excluded from the production line (for example, the boxing line of the bag package Bp) as a defective seal product. Looking at the horizontal seal operation at this time in the flowchart shown in FIG. 4 (b), the product S is dropped as shown in FIG. 3 (f), but the command is not issued for the horizontal seal operation and the operation is still performed. Since it is not the timing, the judgment of S11 is negative. Therefore, the horizontal sealing device does not close and outputs the flow as it is, and remains in the open state.

Patent Document 1 (Patent Gazette of the patent application by the present applicant) discloses a vertical bag-making filling and packaging machine and a device for causing a horizontal sealing means (horizontal sealing device) to perform a box motion operation (Patent Document 1). 11 and 12). According to this vertical bag-making filling and packaging machine, the horizontal sealing means provided with the front and rear heater blocks approaches and sandwiches the tubular packaging material, so that the horizontal sealing means moves vertically together with the tubular packaging material while pressurizing and heating. A seal (end seal part) is applied, and after the seal is formed, it operates in the direction of separating from each other in the front-rear direction, and then returns to the reverse direction of feeding the tubular packaging material, and approaches the tubular packaging material again in the next packaging cycle. Repeat the revolving motion of doing. The bag package is continuously manufactured by repeating each operation of dropping and filling the food into the bag through the filling cylinder at the same timing as the formation of the bag and sealing it with the end seal portion.

An example of a device for causing the lateral sealing means to perform a box motion operation is shown in FIG. 7 (same as FIG. 12 of Patent Document 1). The entire horizontal sealer opening / closing unit 118 is arranged so as to be able to move up and down along the horizontal sealer elevating guide rods 122 and 123. The horizontal sealer opening / closing left side block 124 and the horizontal sealer opening / closing right side block 125 are guided up and down to the horizontal sealer elevating guide rods 122 and 123, respectively. It is installed in parallel.

The opening / closing drive servomotor 137 as the first servomotor is supported by the horizontal sealer opening / closing unit 118. The motor shaft 138 of the opening / closing drive servomotor 137 is connected to the center position of the lateral sealer opening / closing toggle mechanism 131 at the tip extending upward through the left / right opening / closing block connecting plate 136. The output rotation of the rotation direction a or b of the opening / closing drive servomotor 137 acts on the lateral sealer opening / closing toggle mechanism 131, while the rear lateral sealer mounting block 132 is connected to the connecting rod 126 via the slide sleeves 134 and 135. , 127 is slidably guided back and forth, and on the other hand, it is moved back and forth to the front lateral sealer mounting block 128 via the rear lateral sealer connecting block 129 and the connecting rods 126 and 127. This back-and-forth movement causes the back-and-forth movement of the box motion of the lateral sealing means. Since the front heater block 130 is attached to the front lateral sealer mounting block 128 and the rear heater block 133 is attached to the rear lateral sealer mounting block 132, it can be moved back and forth by the toggle mechanism 131 for opening and closing the lateral sealer. At this time, the front heater block 130 and the rear heater block 133 strongly sandwich the tubular packaging material, so that the tubular packaging material is reliably laterally sealed.

An elevating drive servomotor 140 as a second servomotor is attached to the stay 121 upward and parallel to the frame bottom 120 via the bracket 141, and the motor shaft 142 of the elevating drive servomotor 140 is attached. , It is connected to the lateral sealer opening / closing left side block 124 via the lateral sealer elevating crank mechanism 143. The entire lateral sealer opening / closing unit 118 moves up and down along the lateral sealer elevating guide rods 122 and 123 that support the stay 121, depending on the rotation directions c and d of the motor shaft 142 of the elevating drive servomotor 140. The elevating operation of the lateral sealer opening / closing unit 118 brings about the vertical movement operation in the box motion of the lateral sealing means. By combining the driving of the servomotor 137 for opening / closing drive and the servomotor 140 for raising / lowering drive while taking timing, the opening / closing and raising / lowering operations of the front heater block 130 and the rear heater block 133 are combined, and the box motion is generated. It will be realized.

Japanese Patent No. 6084034

Therefore, in a bag-making filling and packaging machine that continuously manufactures a bag-packaging body in which a product is put into the bag formed in advance while forming a bag by applying a horizontal seal to the tubular packaging material, the operation is on standby. When the standby command to the vertical bag filling / packaging machine is canceled and the packaging operation by the vertical bag filling / packaging machine is restarted from the loading of the product, the product falls into the bag. Issues to be solved in terms of receiving the impact of the product not by the bag itself but by the components of the vertical bag-making filling and packaging machine and simplifying the control of the contact / detachment operation of the horizontal sealing device during operation standby. There is.

An object of the present invention is to solve the above-mentioned problems, and when the standby command to the vertical bag-making filling / packaging machine that has been waiting for operation is canceled, the packaging operation by the vertical bag-making filling / packaging machine is performed. By allowing the components of the vertical bag filling and packaging machine to receive the impact of the falling product, rather than the falling product colliding with the unsupported bottom of the bag when it is restarted from product loading. Preventing the product from damaging the bottom of the bag, especially the already formed lateral seal, preventing the bag package from failing to seal, and the contact / detachment operation of the lateral seal device during operation standby. It is to provide a vertical bag-making filling and packaging machine that can simplify control.

In order to solve the above problems, the vertical bag-making filling and packaging machine according to the present invention is
Vertical bag-making filling packaging that continuously manufactures a bag package in which products are put into the bag formed in advance while forming a bag by applying a horizontal seal to the tubular packaging material sent in the vertical direction. It ’s a machine,
A product supply device that supplies the product in order to put the product into the tubular packaging material.
It is provided with two horizontal seal blocks that move in contact with each other with the tubular packaging material in between, and in the open state where the two lateral seal blocks are separated from the tubular packaging material when they are separated from each other during normal operation. A horizontal sealing device that performs a horizontal sealing operation that alternately repeats a closed state in which the tubular packaging material is sandwiched between the tubular packaging materials and the horizontal sealing is applied to the tubular packaging material, and at least the product supplied by the product supply device. It is provided with a control device for controlling the packaging operation of the vertical bag-making filling / packaging machine including the supply operation and the contact / detachment operation of the two-sided seal block by the horizontal seal device.
When the control device determines that the operation of the vertical bag-making filling / packaging machine should be temporarily stopped based on the operating state of the vertical bag-making filling / packaging machine , the product supply device To stop the supply operation of the product and to control the lateral seal device to start the standby operation, the lateral seal blocks are once closed and the lateral seal is applied. The standby start operation in the open state was performed, and when the standby operation was released , the lateral seal device was controlled to close the both lateral seal blocks to such an extent that they did not slightly contact the tubular packaging material. together to a dequeue operation to a semi-closed state, the said product supply device control to resume the vertical bag filling and packaging machine the packaging operation from placing the said product in said bag,
The control device further controls the lateral seal device after the standby start operation until the standby release operation, and inherits the timing of the horizontal seal operation from before the standby start operation as it is. , The open state in which the bilateral seal blocks are most separated from the tubular packaging material and the semi-closed state in which the both lateral seal blocks are closest to the tubular packaging material as the contacting / detaching operation thereof, alternately approach each other. -It consists of operating while waiting to be separated.

According to this vertical bag-making filling and packaging machine, the horizontal sealing device is equipped with two horizontal sealing blocks that move in contact with each other with a tubular packaging material sent in the vertical direction in between, and the tubular packaging material. On the other hand, when the two horizontal seal blocks approach each other, the tubular packaging material is sandwiched and the tubular packaging material is subjected to the horizontal sealing to form a bag, and at the same time, the product is put into the previously formed bag. Continuously manufacture bag packages. The control device provided in the vertical bag filling / packaging machine controls at least the packaging operation of the vertical bag filling / packaging machine including the product supply operation by the product supply device and the attachment / detachment operation of both horizontal seal blocks by the horizontal sealing device. .. Controller, when the temporarily determining to stop the operation of the vertical bag filling and packaging machine on the basis of the operating state of the vertical bag filling packaging machine, the vertical bag filling and packaging machine Controls to put the operation into the standby operation mode, but when the standby operation mode starts, the product supply device is controlled to stop the product supply operation, and the horizontal seal device is controlled to start the standby operation. Therefore, since the standby start operation is performed by temporarily closing both horizontal seal blocks, applying the horizontal seal, and then opening the horizontal seal block, the horizontal seal device opens after the horizontal seal operation and does not come into contact with the tubular packaging material. Will be. Then, when the standby operation is released, the control device controls the product supply device to restart the packaging operation from the loading of the product into the bag, but at this time, the horizontal seal device is controlled to control the horizontal seal block. When the product is put into the bag where the horizontal seal part is already formed on the bottom, the standby release operation is performed so that the product does not come into contact with the horizontal seal part but is closed to the extent that it is slightly open. In addition, even if the falling product collides with the bag, the impact force acts on the lateral seal block in the half-closed state, and the impact force does not act directly on the lateral seal portion to peel it off. Further, during the standby operation from the standby start operation to the standby release operation for the horizontal seal device, the control device inherits the timing from before the standby start operation to the horizontal seal device as it is, and applies the double horizontal seal block to the horizontal seal device. As the contact / separation operation, the operation of approaching / separating from the tubular packaging material is repeated, and the control is performed so that the seal blocks are in a half-closed state when approaching. Therefore, although the closed state of the horizontal seal device is different from the completely closed state or the semi-closed state when the horizontal seal device is closed, the operation timing at which both horizontal seal blocks start and stop their movement is to wait through the standby operation. It is not changed until the release operation is performed, and the operation of approaching and separating is performed at the same timing as before the standby start operation.

In this vertical bag-making filling and packaging machine, the horizontal seal device moves back and forth between a rotary drive source such as a servomotor and the rotational output of the rotary drive source in synchronization with each other and away from each other. The control device is provided with a rotation reciprocating conversion mechanism for converting to, and the control device can control the position of the lateral seal block in the semi-closed state based on the rotation output amount of the rotation drive source.
In the lateral seal device, a rotary drive source such as a servo motor rotates, and a rotary reciprocating conversion mechanism reciprocates the rotational output of the rotary drive source to approach and separate from each other in synchronization with both lateral seal blocks of the lateral seal device. It is converted into movement, and by doing so, both horizontal seal blocks sandwich the tubular packaging material and perform a horizontal sealing operation to form a horizontal sealing portion on the tubular packaging material. By controlling the rotation amount of the rotation drive source, the control device can easily control the closing amount of the lateral sealing block in the lateral sealing device, which is fully closed or half closed.

In this vertical bag-making filling and packaging machine, the control device orders the product supply device to restart the supply of the product in response to the release of the standby operation, and the product supply device commands the restart. In response to the notification signal that the supply of the product has been restarted, the lateral sealing device can be controlled to the semi-closed state.
When the control device decides to cancel the standby operation, it first orders the product supply device to restart the supply of the product. Then, when the product supply device resumes the supply of the product in response to the resumption command, the control device responds to the reception of the notification signal from the product supply device that the resumption has been performed, and the horizontal seal device. Is controlled to be in a semi-closed state. After confirming that the product supply device has resumed supply, the control device controls the lateral sealing device to the half-closed state, so that the product supply and the sealing operation of the lateral sealing device are reliable.

In this vertical bag-making filling and packaging machine, the control device detects the product to be charged into the tubular packaging material by resuming the supply of the product by the product supply device in response to the release of the standby operation. The lateral sealing device can be controlled to the semi-closed state according to the detection signal from the sensor of.
When the control device decides to release the standby operation, the sensor detects the product to be put into the tubular packaging material by resuming the supply of the product by the product supply device, and the horizontal sealing device is put into the half-closed state. Control. The control device controls the lateral sealing device to the half-closed state after confirming the product for which the sensor supply is resumed, so that the product supply and the sealing operation of the lateral sealing device are reliable.

This vertical bag-making filling and packaging machine is a paper feeding device that feeds a strip-shaped packaging material in the vertical direction, a vertical sealing device that forms the strip-shaped packaging material into the tubular packaging material, and the horizontal sealing device in the horizontal sealing portion. Further, a cutter device for cutting and separating the bag package from the tubular packaging material is further provided, and the control device includes the paper feeding device and the vertical sealing device in addition to the product supply device and the horizontal sealing device. And the cutter device can be controlled to control a series of the packaging operations from the supply of the product and the supply of the strip-shaped packaging material to the production of the bag package containing the product.
This vertical bag-making filling / packaging machine can be applied to a general / conventional vertical bag-making filling / packaging machine equipped with a paper feeder, a vertical sealing device, and a cutter device.

Since the vertical bag-making filling and packaging machine according to the present invention is configured as described above, the control device provided in the vertical bag-making filling and packaging machine is a vertical bag-making filling including at least the horizontal sealing operation of the horizontal sealing device. When it is determined that the packaging operation of the packaging machine should be controlled and the operation of the vertical bag-making filling / packaging machine should be temporarily suspended and put into a standby state based on the operating state of the vertical bag-making filling / packaging machine. In addition, at the start of the standby operation mode, as the standby start operation, the horizontal sealing device is controlled to open after the horizontal sealing operation so as not to come into contact with the tubular packaging material. Then, at the time of the standby release operation for releasing the standby operation , the control device restarts the packaging operation from the loading of the product into the bag, but at this time, the horizontal seal device is in contact with the horizontal seal portion by both horizontal seal blocks. Since it is controlled to be in a semi-closed state that is closed to the extent that it is slightly open, the falling product collides with the bag when the product is put into a bag that already has a horizontal seal on the bottom. However, the impact force acts on the lateral seal block in the half-closed state, and the impact force does not act directly on the lateral seal portion to peel it off. Therefore , the horizontal seal portion formed at the bottom of the bag is not damaged by being impacted by the collision of the falling product, and the vertical bag-making filling / packaging machine manufactures a bag package having a defective seal. Never. Further, during the standby operation from the standby start operation of the horizontal seal device to the standby release operation, the control device continues the timing from before the standby start operation to the horizontal seal device. The operation of approaching and separating from the packaging material is repeated, and the semi-closed state is controlled when both lateral seal blocks approach each other. Therefore, the lateral seal device does not change the operation timing at which both lateral seal blocks start and stop their movement until after the release during the standby operation, and opens and closes at the same timing as before the standby start operation. Since it is repeated, it is not necessary to change the timing control of the horizontal sealing device to another control before and after the standby operation, and it can be performed simply.

FIG. 1 is a block diagram of a control device provided in an embodiment of a vertical bag-making filling / packaging machine according to the present invention. FIG. 2 is a schematic process diagram showing a packaging operation in an embodiment of a vertical bag-making filling / packaging machine according to the present invention. FIG. 3 is a time chart showing the packaging operation of the vertical bag-making filling and packaging machine. FIG. 4 is a flowchart of control related to the packaging operation of the control device of the vertical bag-making filling and packaging machine. FIG. 5 is a perspective view showing an example of a conventional vertical bag-making filling and packaging machine. FIG. 6 is a schematic process diagram showing a packaging operation of a conventional vertical bag-making filling / packaging machine. FIG. 7 is a perspective view showing an example of a device for driving a horizontal sealing device of a vertical bag-making filling / packaging machine.

Hereinafter, examples of the vertical bag-making filling / packaging machine according to the present invention will be described with reference to FIGS. 1 to 4 of the attached drawings. FIG. 1 is a block diagram of a control device provided in an embodiment of a vertical bag-making filling / packaging machine according to the present invention, and FIG. 2 shows a packaging operation in an embodiment of a vertical bag-making filling / packaging machine according to the present invention. It is a schematic process diagram, FIG. 3 shows a time chart showing the packaging operation, and FIG. 4 shows a flowchart of control related to the packaging operation of the control device.

In the embodiment of the vertical bag-making filling and packaging machine according to the present invention, the vertical bag-making filling and packaging machine itself is the same as the conventional vertical bag-making filling and packaging machine shown in FIG. 5 and described based on the same. It may be a structure. That is, the vertical bag-making filling and packaging machine 50 forms a tubular packaging material from, for example, a loading device for a product S such as a hopper combined with a weighing machine (which is well known and omitted in FIG. 5) and a strip-shaped packaging material. Vertical sealing device 52, packaging material feeding device (paper feeding device) 55 that feeds strip-shaped packaging material or tubular packaging material to the packaging machine, horizontal sealing device 54 that provides a horizontal sealing portion to the tubular packaging material in the transverse direction, and horizontal A cutter device 56 or the like that cuts the tubular packaging material at the sealing portion and separates the bag package from the tubular packaging material may be provided. Hereinafter, detailed description of the equivalent components in the vertical bag-making filling / packaging machine 50 will be omitted by using the same reference numerals as those used in FIG. The packaging operation of the bag-making filling and packaging machine 50 refers to the operation performed by various devices constituting the vertical bag-making filling and packaging machine 50.

FIG. 1 is a block diagram showing an example of a control device provided in an embodiment of a vertical bag-making filling / packaging machine according to the present invention, and FIG. 1A constitutes the control device and a vertical bag-making filling / packaging machine. It is a block diagram which shows the basic relationship with each device. 1 (b) and 1 (c) are partial block diagrams showing a mode of control when the vertical bag-making filling / packaging machine releases the standby state.

In the control device 20 provided in the vertical bag-making filling and packaging machine 50 shown in the block diagram of FIG. 1, various setting items such as the bag length and the packaging speed required for the packaging operation are input to the calculation unit 21 by the setting unit 19. Necessary items are stored in the memory 22. The control device 20 includes a product supply control unit 23, a packaging material feed control unit 24, a vertical seal control unit 25, a horizontal seal control unit 26, and a cutter control unit 27, which output commands from the calculation unit 21, respectively. The product supply control unit 23 outputs a control signal to a product supply device including a hopper or the like combined with a weighing machine to control the timing and supply amount of the product S to be loaded into the packaging machine. The packaging material feed control unit 24 outputs a control signal to a packaging material feeding device 55 such as a suction belt device, and the timing and amount of feeding of the packaging material (cylindrical packaging material Ft) by the packaging material feeding device 55. To control. The vertical seal control unit 25 is provided with, for example, bar-shaped vertical seal blocks 52a and 52b, and is controlled by the vertical seal device 52 that forms the tubular packaging material Ft by laminating both side edge portions fe and fe of the strip-shaped packaging material Fw. A signal is output to control the operation timing of the vertical sealing device 52 and the like. The horizontal seal control unit 26 includes, for example, bar-shaped horizontal seal blocks 54a and 54b, and the head of the bag and the subsequent bag manufactured in advance by sealing the tubular packaging material Ft in the transverse direction. A control signal is output to the horizontal seal device 54 that forms the horizontal seal portion Se on the bottom portion to control the operation timing of the horizontal seal device 54 and the like. The cutter control unit 27 outputs a control signal to, for example, a cutter device 56 (including a drive device for that purpose) incorporated in the horizontal seal device 54, cuts the packaging material in the horizontal seal unit Se, and cuts the packaging material into the bag package Bp. Controls the operation timing and the like of the cutter device 56 that separates and cuts the tubular packaging material Ft.

When the control device 20 determines that the operation of the vertical bag-making filling / packaging machine 50 should be temporarily stopped based on the operating state of the vertical bag-making filling / packaging machine 50, the control device 20 determines that the operation of the vertical bag-making filling / packaging machine 50 should be temporarily stopped. Each device is controlled so as to enter the standby operation mode for the operation of the packaging machine 50. That is, at the start of the standby operation mode, the product supply control unit 23 stops the product supply device to stop the supply (input) of the product. The packaging material feed control unit 24 stops the packaging material feed device 55 and the like, and the vertical seal control unit 25 stops the vertical seal device 52. After the horizontal seal control unit 26 controls the horizontal seal device 54 to perform the horizontal seal operation, the horizontal seal blocks 54a and 54b do not open from the horizontal seal portion Se and come into contact with the tubular packaging material (horizontal seal portion Se). Put it in a state. When the standby operation is released, the control device 20 restarts the packaging operation from the loading of the product S into the bag B by the product supply control unit 23 operating the product supply device, but both sides of the horizontal sealing device 54. The seal blocks 54a and 54b are controlled to be in a semi-closed state in which the seal blocks 54a and 54b do not come into contact with the lateral seal portion Se but are closed to the extent that they are slightly open.

The means for the control device 20 to recognize that the product S has been put into the bag are shown in FIGS. 1 (b) and 1 (c). The means shown in FIG. 1B is in the form of a notification that the supply operation of the product S by the product supply device is reported to the product supply control unit 22, and is recognized by the calculation unit 21 via the product supply control unit 22. It is configured. The horizontal seal control unit 26 controls the horizontal seal device 54 according to an instruction from the calculation unit 21, and when the product supply is restarted, the horizontal seal device 54 at that time is finally closed. After that , when the closing operation is performed, the normal full closing operation is performed. The means shown in FIG. 1C has a sensor that detects that the product S supplied by the product supply device has fallen, the calculation unit 21 receives the detection signal from the sensor, and outputs an instruction to the horizontal seal control unit 26. It is something to do. The control of the horizontal seal device by the horizontal seal control unit 26 is the same as in the case of FIG. 1 (b).

FIG. 2 shows the operation of the tubular packaging material Ft and the horizontal sealing device 54 when the standby of the vertical bag-making filling and packaging machine 50 is started and the packaging operation is restarted. 2 (a) to 2 (c) are process diagrams showing an outline of normal packaging operation at a major time point of the vertical bag making filling and packaging machine, and have already been shown in FIGS. 6 (a) to 6 (c). It is a process diagram similar to the one. That is, in FIG. 2A, the horizontal sealing device 54 is closing, and the bag package Bp in which the product S is packaged inside the bag B formed in advance is manufactured, and the bottom side is manufactured. It shows a process in which the product S is loaded after the subsequent bag B is manufactured by forming the horizontal seal portion Se. In FIG. 2B, after the state shown in FIG. 2A, the horizontal sealing device 54 opens, and the bag B in which the product S is loaded is opened by the paper feed of the tubular packaging material Ft. The process of lowering through the space between the horizontal seal blocks 54a and 54b of the horizontal seal device 54 is shown. In FIG. 2C, after the state shown in FIG. 2B, the bag B into which the product S is loaded is fed with the tubular packaging material Ft by the packaging material feeding device 55, so that the horizontal sealing device 54 The process further lowered to the height position is shown.

If the vertical bag-making filling / packaging machine 50 continues the normal packaging operation and does not stand by, the operation returns from FIG. 2 (c) to FIG. 2 (a), and the following operations are performed. By repeating this, the bag package Bp in which the product S is packaged is continuously produced. Looking at such a horizontal seal operation in the flowchart shown in FIG. 4, as shown in FIG. 4 (a), the flow is always IN at regular intervals, and it is determined whether or not the current timing is the horizontal seal operation. Is done (S1). If it is not the timing of the horizontal seal operation, the flow is output as it is, but if it is the timing of the horizontal seal operation, it is determined whether the product S has been dropped or whether the dropped product has been detected (S2). If the product S is dropped or detected by the judgment of S2, the lateral sealing device is set to the fully closed operation (S3), which is the state shown in FIG. 2 (a) and the time t (a) indicating the normal operation. Corresponds to FIG. 3 (a) of. If there is no drop or detection of the product S by the judgment of S2, the horizontal sealing device outputs the flow as it is without closing.

When a standby command is given to the vertical bag-making filling / packaging machine 50 due to some event, the control device 20 determines that the operation of the vertical bag-making filling / packaging machine 50 should be temporarily stopped. Then, the lateral seal device 54 is controlled to temporarily close both lateral seal blocks 54a and 54b, apply the lateral seal Se, and then perform a standby start operation to open the lateral seal blocks 54a and 54b. That is, in the standby start operation, as shown in the process of FIG. 2D, the horizontal sealing operation by the horizontal sealing device 54 is performed after the state shown in FIG. 2C, and the horizontal sealing Se is applied to the tubular packaging material Ft. Is applied to produce the bag package Bp, and a horizontal seal portion Se for the bottom side of the bag B to which the product S should be loaded next is formed, but the supply of the product S is stopped. The product S is not put into the bag B. After that, as shown in FIG. 2 (e), the cutter device 56 incorporated in the horizontal sealing device 54 operates to separate the bag package Bp from the tubular packaging material Ft. The lateral sealing device 54 once opens and is put into an open state.

When the vertical bag-making filling / packaging machine 50 enters the standby state, in the control device 20, only the horizontal seal control unit 26 continues the opening / closing operation even in the standby state, but the other control units 23 to 25 , 27 stop each corresponding device (product supply device, vertical seal device 52, cutter device 56). The control device 20 controls the horizontal seal device 54, and the horizontal seal device 54 takes over the timing of the horizontal seal operation from before the standby start operation as it is as a standby operation, and forms both horizontal seal blocks 54a and 54b into a cylinder. The operation of alternately approaching and separating from the open state farthest from the tubular packaging material Ft and the semi-closed state that does not come into contact with the horizontal seal portion Se even if the tubular packaging material Ft is closest to the tubular packaging material Ft is performed. That is, the lateral seal control unit 26 opens and closes the lateral seal block 54 at the same timing as before entering the standby state, as the standby operation of the lateral seal device 54. The horizontal seal device 54 opens with the same opening amount as before entering the standby state in the open state, but does not close completely in the closed state, and the sealer tips of the horizontal seal blocks 54a and 54b are tubular packaging materials Ft. It approaches a semi-closed state in which it does not come into contact with the lateral seal portion Se already formed in. FIG. 2 (f) shows a state in which the horizontal seal device 54 is in a half-closed state as a standby operation, and FIG. 2 (g) shows a state in which the horizontal seal device 54 is in an open state as a standby operation. The situation at a certain time is shown. When the vertical bag-making filling / packaging machine 50 is in the standby state, the horizontal sealing device 54 repeats the half-closed state shown in FIG. 2 (f) and the open state shown in FIG. 2 (g).

When the standby state of the vertical bag making filling / packaging machine 50 is released , the control device 20 controls the horizontal sealing device 54, and as a standby releasing operation, the both horizontal sealing blocks 54a and 54b are used as the tubular packaging material Ft. On the other hand, the packaging operation is restarted by putting the product S into the bag B by controlling the product supply device while keeping the product in a semi-closed state so as not to make slight contact. That is, when the standby state of the vertical bag-making filling / packaging machine 50 is released , the horizontal sealing device 54 closes and approaches the half-closed state as shown in FIG. 2 (h). As shown in FIG. 2F, this semi-closed state is the same as the state in which the tip of the sealer of the horizontal seal blocks 54a and 54b does not contact the horizontal seal portion Se already formed on the tubular packaging material Ft. be. The gap G between the tip of the sealer of the horizontal seal blocks 54a and 54b and the horizontal seal portion se is the thermal characteristics such as temperature by the horizontal seal device 54, the material and thermal characteristics of the tubular packaging material, or the size and weight of the product S. Although it depends on the above, it is approximately 2 mm to 20 mm, preferably 5 mm to 10 mm.

When the lateral sealing device 54 is in the closed state, as shown in FIG. 2H, the product S is put into the tubular packaging material Ft, so that the packaging operation is restarted. The falling product S is received by the side seal blocks 54a and 54b in the semi-closed state via the packaging material of the bag B. Therefore, the lateral seal blocks 54a and 54b in the semi-closed state can prevent the impact force of the falling product S from acting to peel off the lateral seal portion Se just formed. After that, the normal packaging operation is continued, and FIGS. 2 (a) to 2 (c) are repeated.

FIG. 3C is a time chart showing the packaging operation of the vertical bag-making filling / packaging machine shown in FIG. 2. The steps (d) and (e) for starting the normal packaging operation and standby shown in FIGS. 2 (a) to 2 (c) are the times t (a) to (a) in the time chart shown in FIG. 3 (a). Since the state in t (e) has already been described, the description will be omitted here. At the time t (f) in FIG. 3 (c), the feeding of the packaging material and the loading (dropping) of the product are stopped, and the lateral seal blocks 54a and 54b of the lateral seal device 54 approach each other until they are in the half-closed state. is doing. After that, the lateral sealing device 54 repeats the opening / closing operation at the same timing as the operation timing before the standby until the standby state is released. At this time, in the closed state, the tubular packaging material Ft is not in a completely closed state where it is in contact with and pressed, but is approached to a semi-closed state. The control for opening and closing the horizontal seal blocks 54a and 54b of the horizontal seal device 54 in the standby operation is, for example, regarding the opening and closing speed of the horizontal seal blocks 54a and 54b, between the maximum closing speed reached before closing and the opening speed. There is no need to change the maximum opening speed to reach, except that it is slightly slower than the maximum closing / opening speed before the standby start operation and after the standby release operation. Regarding the timing when the movement is started and reached, and the timing when the movement is started and reached from the half-closed state to the open state, there is no change from the case before the standby start operation or after the standby release operation. However, it can be controlled at the same timing as the start and arrival of the contact / detachment operation between the open state and the closed state.

Looking at such a horizontal seal operation in the flowchart shown in FIG. 4, for each step of S1 to S3, for the start of the normal packaging operation and the standby in the normal operation shown in FIGS. 2 (a) to 2 (c). The flow charts (S11 to S13) of FIGS. 4 (b) already described as the states at times t (a) to t (e) of the steps (d) and (e) and the time chart shown in FIG. 3 (a). Since it is the same as the above, the description thereof is omitted here. In this embodiment, as shown in FIG. 3 (c), the command of the timing of the lateral seal operation is continuously issued even during standby, and therefore, the flow shown in FIG. 4 (a). In S1, there are cases where the judgment as to whether or not the current timing of the horizontal seal operation is affirmative. At this time, the flow shifts from S1 to S2, and it is determined whether the product S has been dropped or the dropped product has been detected. When the product is on standby, the judgment of S2 is that the product S has fallen or is not detected. Therefore, the flow shifts from S2 to S4, and the lateral sealing device operates half-closed. This state corresponds to FIGS. 2 (f) to 2 (g), and the lateral sealing device repeats a half-closing operation and an opening operation.

When the standby state is released, the packaging operation is started from the loading (dropping) of the product S. At time t (h), the product S is loaded (dropped) in a state where the horizontal seal blocks 54a and 54b of the horizontal seal device 54 are in a half-closed state, so that the impact force of the falling product S is the impact force of the bag B. Although it is via the packaging material, it is received by the lateral seal blocks 54a and 54b which are in the semi-closed state. Therefore, it is possible to prevent the impact force of the falling product S from acting directly on the lateral seal portion Se just formed on the bottom of the bag B and giving an action of peeling the lateral seal portion Se from the inside. It is possible to prevent the occurrence of a bag package that causes a defective seal.

Looking at the horizontal seal operation when the standby state is released from the flowchart shown in FIG. 4, when the horizontal seal device is in the half-close operation while repeating the half-close operation (S4) and the open operation. In addition, the judgment of S2 is positive for the judgment of dropping or detection of the product S (corresponding to t (h) in FIG. 2 (h) in the process chart and t (h) in FIG. 3 (c) in the time chart). From the process in which the horizontal sealing device is opened and then the bag into which the product S is loaded is lowered to the lower part of the horizontal sealing device by the lowering of the tubular packaging material Ft, the packaging machine returns to normal operation (normal packaging operation) and laterally. The fully closing operation (S3) of the sealing device, the operation of the cutter device, and the dropping of the product S are repeated in sequence.

When the packaging operation is resumed from the loading of the product S, the horizontal seal blocks 54a and 54b are slightly raised to cause slack at the bottom of the bag B, so that the impact force of the falling product S is more reliably applied. It may be received by the horizontal seal blocks 54a and 54b.
Further, the horizontal seal blocks 54a and 54b may be provided with a receiving tool having a receiving surface that resembles the shape of the bottom of the bag B on the upper surface thereof.

As for the mechanism for opening and closing the horizontal seal blocks 54a and 54b, the drive mechanism of the horizontal seal device shown in FIG. 7 can be used. In the drive mechanism of this lateral seal device, the amount of movement in the closing direction in the standby state, that is, the control of the operation of closing to the semi-closed state of approaching but not contacting, is for opening / closing drive, which is the first servomotor. It can be obtained by controlling the output rotation amount of the servo motor 137. Further, when the lateral seal blocks 54a and 54b are slightly raised when the packaging operation is restarted from the loading of the product S, the output rotation amount of the elevating drive servomotor 140, which is the second servomotor, is controlled. Obtainable.

19 Setting unit 20 Control device 21 Calculation unit 22 Memory 23 Product supply control unit 24 Packaging material feed control unit 25 Vertical seal control unit 26 Horizontal seal control unit 27 Cutter control unit 50 Vertical bag making filling and packaging machine 51 Former 52 Vertical seal device 52a, 52b Vertical seal block 53 Filling cylinder 54 Horizontal seal device 54a, 54b Horizontal seal block 55 Packaging material feeding device 56 Cutter device 56a Cutter blade 56b Groove 59 Tension guide 118 Horizontal sealer opening / closing unit 120 Frame bottom 121 Stay 122, 123 Horizontal sealer lifting guide rod 124 Horizontal sealer opening / closing left side block 125 Horizontal sealer opening / closing right side block 126,127 Connecting rod 128 Front side horizontal sealer mounting block 129 Rear side horizontal sealer connecting block 130 Front side heater block 131 Horizontal sealer opening / closing toggle mechanism 132 Rear side lateral Sealer mounting block 133 Rear heater block 134,135 Slide sleeve 136 Left and right opening / closing block connecting plate 137 Opening / closing drive servomotor (first servomotor) 138 Motor shaft 140 Elevating drive servomotor (second servomotor) 141 Bracket 142 motor Shaft 143 Horizontal sealer lifting crank mechanism Fw Band-shaped packaging material fe, fe Side edge part Ft Cylindrical packaging material Sc Vertical sealing part Se Horizontal sealing part S Product B Bag Bp Bag packaging body G Gap

Claims (5)

Vertical bag-making filling packaging that continuously manufactures a bag package in which products are put into the bag formed in advance while forming a bag by applying a horizontal seal to the tubular packaging material sent in the vertical direction. It ’s a machine,
A product supply device that supplies the product in order to put the product into the tubular packaging material.
It is provided with two horizontal seal blocks that move in contact with each other with the tubular packaging material in between, and in the open state where the two lateral seal blocks are separated from the tubular packaging material when they are separated from each other during normal operation. A horizontal sealing device that performs a horizontal sealing operation that alternately repeats a closed state in which the tubular packaging material is sandwiched between the tubular packaging materials and the horizontal sealing is applied to the tubular packaging material, and at least the product supplied by the product supply device. It is provided with a control device for controlling the packaging operation of the vertical bag-making filling / packaging machine including the supply operation and the contact / detachment operation of the two-sided seal block by the horizontal seal device.
When the control device determines that the operation of the vertical bag-making filling / packaging machine should be temporarily stopped based on the operating state of the vertical bag-making filling / packaging machine , the product supply device To stop the supply operation of the product and to control the lateral seal device to start the standby operation, the lateral seal blocks are once closed and the lateral seal is applied. The standby start operation in the open state was performed, and when the standby operation was released , the lateral seal device was controlled to close the both lateral seal blocks to such an extent that they did not slightly contact the tubular packaging material. together to a dequeue operation to a semi-closed state, the said product supply device control to resume the vertical bag filling and packaging machine the packaging operation from placing the said product in said bag,
The control device further controls the lateral seal device after the standby start operation until the standby release operation, and inherits the timing of the horizontal seal operation from before the standby start operation as it is. , The open state in which the bilateral seal blocks are most separated from the tubular packaging material and the semi-closed state in which the both lateral seal blocks are closest to the tubular packaging material as the contacting / detaching operation thereof, alternately approach each other. -A vertical bag-making filling and packaging machine that operates while waiting to be separated. The horizontal seal device includes a rotary drive source such as a servomotor and a rotary reciprocating conversion mechanism that converts the rotational output of the rotary drive source into a reciprocating movement in which both lateral seal blocks approach and separate in synchronization with each other. And
The vertical bag-making filling and packaging machine according to claim 1 , wherein the control device controls the position of the horizontal seal block in the semi-closed state based on the rotation output amount of the rotation drive source. The control device orders the product supply device to restart the supply of the product in response to the release of the standby operation, and the product supply device restarts the supply of the product in response to the restart command. The vertical bag-making filling and packaging machine according to claim 1 or 2 , wherein the horizontal sealing device is controlled to the semi-closed state in response to the notification signal. The control device responds to a detection signal from the sensor that the product to be loaded into the tubular packaging material is detected by the product supply device resuming the supply of the product in response to the release of the standby operation. The vertical bag-making filling and packaging machine according to claim 1 or 2 , wherein the horizontal sealing device is controlled to the semi-closed state. Paper feeder that feeds strips of packaging material in the vertical direction,
The vertical sealing device for molding the strip-shaped packaging material into the tubular packaging material, and the horizontal sealing device further include a cutter device for cutting and separating the bag package from the tubular packaging material at the horizontal sealing portion. ,
In addition to the product supply device and the horizontal sealing device, the control device controls the paper feeding device, the vertical sealing device, and the cutter device to supply the product and the strip-shaped packaging material to the product. The vertical bag-making filling and packaging machine according to any one of claims 1 to 4 , which comprises controlling a series of the packaging operations leading to the manufacture of the bag package containing the bag.

Images