JP4717433B2 - Bag making and packaging machine - Google Patents

Description

  The present invention relates to a bag making and packaging machine.

A manufacturing apparatus for creating a continuous product in which a plurality of sachets are connected is disclosed. (Patent Document 1). As this type of packaged product, there is a packaged product comprising a predetermined number of mutually connected sachets containing articles to be packaged and a header that is provided above the uppermost sachet and forms a hanging portion. is there.
Japanese Utility Model Publication No. 1-061006

  When the apparatus is stopped while creating such a bundled product, the creation of the bundled product is stopped at a halfway part of the bundled product depending on the timing of the stop. For this reason, the apparatus stops while several sachets of one packaged commodity are hung on the apparatus.

  As described above, in the conventional apparatus, the packaging operation is stopped in the middle of the production of a series of continuous packaged products. Therefore, when the production is started again, the production efficiency is reduced and the product is wasted. In particular, in exhibitions and the like, products that are in the process of being created are stopped while hanging on the device, which is very unattractive.

  Accordingly, an object of the present invention is to provide a bag making and packaging machine capable of interrupting the production of goods with improved production efficiency and good appearance.

  In order to achieve the above object, a bag making and packaging machine according to the present invention includes a predetermined number of sachets accommodated to be packaged, and a header that is provided above the uppermost sachet and forms a hanging portion. In the bag making and packaging machine capable of producing continuous packaged goods, welding means for welding the packaging material between the sachets and between the sachet and the header, and forming a notch in the packaging material in the welded region And cutting means for cutting the packaging material at the upper end of the header to separate the packaged products, an operation unit operated when stopping the packaging operation, and a predetermined number of the sachets for each one packaged product When the operation unit is operated to stop the packaging operation, a predetermined number of sachets are generated and the upper end of the header is cut off regardless of the progress of the packaging operation. To produce a series of products Later, characterized in that a control means for stopping the wrapping operation.

  According to the present invention, since the production is stopped for each series of continuous packaged products, the production efficiency is improved and the product is not wasted. Since it is possible to prevent the sachet that is in the process of being suspended from being suspended, it is possible to prevent the appearance from deteriorating particularly at exhibitions.

In the present invention, the control means outputs a request signal for requesting the supply of the package from the upper supply means, and receives the discharge signal indicating the completion of the discharge of the package from the supply means. The number of the request signal or completion signal is counted by a counter for each packaged product, and the request signal or completion signal is counted until the request signal or completion signal counted by the counter matches a predetermined number stored in the storage means. After outputting to the supply means and generating the predetermined number of sachets, the header is generated, and the packaging operation is stopped in a state where the packaged goods are cut off .
According to the present invention , by counting the number of discharge signals and completion signals, it is possible to stop the packaging operation in a state where the continuous packaged product is reliably cut off.

In the present invention, an emergency stop button for emergency stop of the bag making and packaging machine is provided separately from the operation unit, and when the emergency stop button is pressed, immediately regardless of the progress of the packaging operation. The packaging operation is preferably stopped.
According to this aspect, in the case of an emergency, the operation can be stopped immediately and damage can be avoided.

Embodiments of the present invention will be described below with reference to the drawings.
In the following description, a system in which supply means including a combination weighing device is arranged upstream of the bag making and packaging machine is illustrated. In the following description, “front”, “back”, “right”, and “left” mean “front side”, “back side”, “right side”, and “left side”, respectively, in front view. To do.

overall structure:
1 to 5 show Example 1. FIG.
As shown in FIG. 1, in this system, a bag making and packaging machine 2 is provided below the combination weighing device 1, and the combination weighing device 1 collects objects M to be packaged supplied from the upstream side as a target. The weight or a value close to the target weight is set and dropped on the lower bag making and packaging machine 2. The bag making and packaging machine 2 encloses the article to be packaged M in a small bag B.

Consolidation product LM:
The bag making and packaging machine 2 can produce a continuous packaged product LM as shown in FIG. The packaged product LM includes a predetermined number of sachets B in which the articles to be packaged M are accommodated, and a header H that is provided above the uppermost sachet B and forms a hanging portion. Cuts (perforations) Bl are formed in the welded areas Sa between the pouches B and between the pouches B and the header H. The header H does not contain the article to be packaged M. Further, a hanging hole is perforated in the bag portion of the header H.
The bag making and packaging machine 2 can switch and manufacture the packaged product LM and the single packaged product in which each sachet B is cut off from each other. First, when manufacturing the packaged product LM. Will be described.

Combination weighing device 1:
When the transport conveyor 100 drops the article to be packaged M almost at the center of the dispersion table 102, the dispersion table 102 and the supply troughs 103 _i are each vibrated by the drive of the vibration exciter, so The package M is supplied to a number of pool hoppers 101 _i provided downstream of each supply trough 103 _i . Each of these pool hoppers 101 _i temporarily accommodates and stores the articles to be packaged M received from the supply troughs 103 _i . A weighing hopper 102 _i is provided below each pool hopper 101 _i . The objects to be packaged M are put into the weighing hoppers 102 _i from the pool hoppers 101 _i . The weight of the loaded article M is detected by the weight detector of each weighing hopper 102 _i . A large discharge chute 109 is provided below each weighing hopper 102 _i , and by combining the weights of the objects to be packaged M detected by the weight detector, the objects to be packaged M can be combined into a target weight or The value is close to the target weight, and dropped to the lower bag making and packaging machine 2.

Bag making and packaging machine 2:
The bag making and packaging machine 2 includes a roll support portion 21, a former 22, a pull-down belt mechanism 23, a vertical sealing device 24, a horizontal sealing device 25, a cutter device 26 (FIG. 2), and the like.
As shown by the arrow a, the strip-shaped packaging material Fa is fed out from the roll support portion 21, and the left and right edges of the fed-out strip-shaped packaging material Fa are overlapped by the sailor 22 a and the tube 22 b of the former 22. become.
The pull-down belt mechanism 23 conveys the packaging material Fb formed in a cylindrical shape downward as indicated by an arrow b while pressing the tube material Fb from both left and right sides against the tube 22b. At the same time, the vertical sealing device 24 performs vertical sealing in the longitudinal direction on the overlapping portion of the tubular packaging material Fb.

  After that, the horizontal sealing device 25 sandwiches the cylindrical packaging material Fb from both the front and rear sides, performs horizontal sealing in the width direction at a predetermined position of the cylindrical packaging material Fb, and the cutter device 26 in FIG. Create a notch. As will be described later, the cutter device 26 creates headers H (FIG. 5 (f)) for each predetermined number, and separates the headers H and the pouches B to create a continuous product LM.

Horizontal sealing device 25:
2 and 3 are schematic plan views of the lateral sealing device 25. FIG.
As shown in FIGS. 2 and 3, the horizontal sealing device (welding means) 25 has a pair of front and rear and sealing jaws 25a and 25b extending in the left-right direction. The seal jaws 25a and 25b are repeatedly moved between the approached state of FIG. 2 and the separated state of FIG. 3 by a known moving mechanism 40 including a servo motor 49b, a crank 47, a support rod 41, and the like. .

  When the crank 47 rotates around the rotation shaft 46 in the direction of arrow c by the servo motor 49b of FIG. 2, the seal jaws 25a and 25b are moved from the approaching state shown in FIG. 2 to the separated state shown in FIG. On the other hand, when the crank 47 rotates around the rotation shaft 46 in the direction of the arrow d opposite to the arrow c, the seal jaws 25a and 25b are moved from the separated state shown in FIG. 3 to the approached state shown in FIG.

  Each of the sealing jaws 25a and 25b has a heater (not shown). When the sealing jaws 25a and 25b approach each other and sandwich the tubular packaging material Fb, the heater welds the tubular packaging material Fb to each other.

Cutter device 26:
A cutter device (cutting means) 26 is attached to the front seal jaw 25a. The cutter device 26 includes a cutter 26a in which a saw blade is formed and a composite cylinder 26b.
When the cut is formed in the cylindrical packaging material Fb, the cutter 26a is advanced by the composite cylinder 26b and slightly protrudes from the end face of the seal jaw 25a. When the sealing jaws 25a and 25b are close to each other and sandwich the tubular packaging material Fb, only the tip portion of the cutter 26a (the angled portion of the saw blade) penetrates the cylindrical packaging material Fb and cuts in a broken line shape. A cut is formed in which is formed.
On the other hand, when the cylindrical packaging material Fb is cut, it is further advanced by the composite cylinder 26b and is greatly protruded from the end face of the seal jaw 25a. In this state, when the sealing jaws 25a and 25b sandwich the cylindrical packaging material Fb, the cylindrical packaging material Fb is cut by the cutter 26a.

Equipment configuration:
As shown in FIG. 4, the bag making and packaging machine 2 includes a control unit (control means) 50 that controls the bag making and packaging machine 2. The control unit 50 includes, for example, a microcomputer. The touch unit 56, the emergency stop button 57, the pull-down belt mechanism 23, the vertical sealing device 24, the horizontal sealing device 25, the cutter device 26, and the like have an interface (not shown). Connected through.

  The control unit 50 includes a CPU 51 and a memory (storage means) 52. The memory 52 includes a request signal counter 53, a film feed number counter 54, a product information storage unit 55, and the like.

  The control unit 50 outputs a request signal to the upper combination weighing device 1 every time it requests the supply of the article to be packaged M. When the combination weighing device 1 receives the request signal, the combination weighing device 1 supplies the articles to be packaged M. When the combination weighing device 1 receives a request signal once from the bag making and packaging machine 2, the combination weighing device 1 supplies the packaged object M corresponding to the request signal once. The combination weighing device 1 outputs a discharge signal indicating completion of discharge of the article to be packaged M to the bag making and packaging machine 2 every time the article to be packaged M is supplied and discharged.

  The request signal counter 53 is incremented every time a request signal is output toward the combination weighing device 1. The request signal counter 53 is cleared to 0 when the number of sachets constituting the packaged product LM is reached. Therefore, the request signal counter 53 is incremented every time a request signal is output, and the operation of clearing to 0 when the number of pouches is reached is repeated.

When the CPU 51 receives the discharge signal from the combination weighing device 1 and the article to be packaged M is supplied, the CPU 51 operates the pull-down belt mechanism 23 to move the cylindrical packaging material Fb downward.
The CPU 51 increments the film feed number counter 54 each time the pull-down belt mechanism 23 feeds the cylindrical packaging material Fb for a small bag. The feed number counter 54 is cleared to zero when the number of pouches is reached. The feed number counter 54 is incremented every time the cylindrical packaging material Fb is fed, and the operation of clearing to 0 when the number of pouches is reached is repeated.

  The merchandise information storage unit 55 stores in advance merchandise information including various values necessary for the production of the merchandise such as the number of pouches, the pouch length of the pouch B, and the pouch length of the header H for each packaged product LM. Yes.

  The touch screen 56 constitutes a display unit that displays various information, selection buttons, and the like on a display screen such as a liquid crystal screen, and performs various operations by touching part of the display. Part.

The CPU 51 has a continuous stop mode and an emergency stop mode.
In the continuous package stop mode, regardless of the progress of the packaging operation, a predetermined number of sachets B are generated and the upper end of the header H is cut off, and after the continuous packaged product LM is created, the packaging operation is stopped. Mode. The CPU 51 is set to the continuous package stop mode by the operator touching the continuous package stop button displayed on the touch screen 56.

  On the other hand, the emergency stop mode is a mode in which the machine itself of the bag making and packaging machine 2 is stopped. In the emergency stop mode, power supply to each motor of the bag making and packaging machine 2 is immediately stopped. The emergency stop button 57 is provided independently on the front surface of the housing of the bag making and packaging machine 2, and when the emergency stop button 57 is pressed, the CPU 51 is set to the emergency stop mode.

Packaging operation:
When the packaging operation of this system is started, the CPU 51 clears the request signal counter 53 and the feed number counter 54 to zero. When an operator selects a product to be produced by performing a predetermined operation, the CPU 51 reads product information necessary for production of the product from the product information storage unit 55, and production of the packaged product LM is started.
The CPU 51 outputs a request signal toward the combination weighing device 1 and increments the request signal counter 53. Upon receiving the request signal, the combination weighing device 1 combines the weights of the articles to be packaged M so as to reach the target weight, and discharges the articles to be combined M to the combination weighing apparatus 1 and outputs a discharge signal to the bag making and packaging machine 2. Output to.

  As shown to Fig.5 (a), the to-be-packaged object M is thrown in from the combination measuring device 1 in the cylindrical packaging material Fb. After this charging, the pull-down belt mechanism 23 (FIG. 1) moves the tubular packaging material Fb downward by the bag length, and the CPU 51 increments the film feed number counter 54.

  When the cylindrical packaging material Fb is moved downward, the sealing jaws 25a and 25b in FIG. 2 move in the directions close to each other, and as shown in FIG. At the same time as the packaging material Fb is sealed to form the sachet B, a new bottom is formed. A cut is formed in the seal portion by the cutter device 26.

  On the other hand, due to the downward movement of the cylindrical packaging material Fb, the strip-shaped packaging material Fa is pulled out from the roll support portion 21 and wound around the tube 22b via the sailor 22a to be formed into a cylindrical shape. The overlapping portion of the strip-shaped wrapping material Fa (tubular wrapping material Fb) formed into a cylindrical shape is sealed in the longitudinal direction by the vertical sealing device 24 to form a new cylindrical wrapping material Fb.

  The bag making and packaging machine 2 repeats such a packaging operation to form a plurality of small bags B as shown in FIGS. 5C and 5D, and for each packaging operation, a request signal counter 53 and a feed number counter. 54 is incremented sequentially. The CPU 51 compares the value of the feed number counter 54 with the number of sachets corresponding to the packaged product LM read from the product information storage unit 55, and the number of feeds of the feed number counter 54 has reached the number of sachets. When it is determined (FIG. 5 (d)), as shown in FIG. 5 (e), the header H is created and the continuous packaged product LM is cut out and discharged.

  Thereafter, the article to be packaged M is put into the small bag B of the new packaged product LM, and the creation of the packaged product LM is repeated. As described above, when the request signal counter 53 and the feed number counter 54 reach a predetermined number of sachets, they are cleared to 0 and then incremented again.

Continuous stop mode:
Here, when the worker touches the continuous package stop button displayed on the touch screen 56, the CPU 51 is set to the continuous package stop mode.
When the continuous package stop mode is started, the CPU 51 determines whether or not the numerical value of the request signal counter 53 has reached a predetermined number of pouches, and the request signal is combined and weighed until the numerical value reaches a predetermined number of pouches. Transmission to the apparatus 1 and subsequent transmission of the request signal are stopped.

On the other hand, the combination weighing device 1 outputs a discharge signal when discharging the package M corresponding to the request signal from the bag making and packaging machine 2, and then supplies the package M to the bag making and packaging machine 2. Discharge.
The CPU 51 of the bag making and packaging machine 2 compares the value of the feed number counter 54 with the number of small bags, and if it determines that the number of feeds of the feed number counter 54 has reached the number of small bags, creates a header H, Cut off the LM and let it drain. The CPU 51 stops the packaging operation without outputting the request signal for the next small bag after the continuous packaged product LM is cut off. Therefore, the bag making and packaging machine 2 stops the packaging operation without producing the next packaged product LM after completely producing the packaged product LM.

  In this way, in the packaging stop mode, the packaging operation is stopped after the continuous product LM is manufactured regardless of the current progress of the packaging operation, so that the production efficiency is improved and the product is not wasted. Further, as shown in FIGS. 5B to 5D, since the small bag B in the middle of manufacture can be prevented from being suspended, it is possible to prevent the appearance from being deteriorated particularly at an exhibition.

Emergency stop mode:
When the emergency stop button 57 is pressed in an emergency or the like, the CPU 51 is immediately set to the emergency stop mode. When the emergency stop mode is started, the CPU 51 immediately stops each motor of the bag making and packaging machine 2 to urgently stop the packaging operation.

Here, the CPU 51 further includes a single package mode for creating a single package product in which the sachets B are cut apart from each other, in addition to the continuous package mode for creating the packaged product LM. On the touch screen (switching means) 56, a switch button for switching each mode is displayed. By operating the switching button, it is possible to switch between the continuous packaging mode and the single packaging mode and manufacture a product.
The continuous package mode and the single package mode may be stored in the product information storage unit 55 in association with the product information. In such a case, switching between the continuous package mode and the single package mode is performed by specifying the product.

  By the way, a registration mark is printed for each bag length on the band-shaped packaging material Fa, and a small bag is manufactured by detecting the registration mark with an optical sensor or the like. In the present bag making and packaging machine 2, when the belt-like packaging material Fa is set, the belt-like packaging material Fa is sent to the former 22, and the interval between the registration marks printed on the belt-like packaging material Fa is read, whereby the bag length is reduced. It is set to adjust automatically.

FIG. 6 shows a second embodiment.
As shown in FIG. 6, in this embodiment, a discharge signal counter 58 that counts a discharge signal from the bag making and packaging machine 2 is provided instead of the request signal counter 53 described in the first embodiment.
Other configurations are the same as those of the first embodiment, and the description and illustration thereof are omitted.

  When the continuous packaging stop button is touched and the CPU 51 is set to the packaging stop mode, the CPU 51 sequentially transmits a request signal to the combination weighing device 1 until the value of the discharge signal counter 58 reaches the number of pouches. When the CPU 51 determines that the value of the discharge signal counter 58 has reached the number of pouches, in principle, the CPU 51 stops transmitting the request signal.

  The combination weighing device 1 supplies and discharges the packages M after outputting a discharge signal when discharging the number of packages M corresponding to the request signal. When the value of the feed number counter 54 reaches the number of sachets, the CPU 51 creates the header H, then cuts and discharges the continuous product LM, and then stops the packaging operation.

  Here, since it takes a predetermined time for the combination weighing device 1 to discharge the combination of the objects to be packaged M, after the request signal is received, the discharge signal is output and the object to be packed M is discharged. Causes a time difference. For this reason, when the bag making and packaging machine 2 receives the fifth (predetermined number of small bags) discharge signal, the first request signal for the next packaged product may already be output. Therefore, in such a case, the packaging operation is stopped after completing the continuous packaging operation for the next packaged product.

In addition to the continuous package stop mode and the emergency stop mode, when a predetermined stop operation is performed, the transmission of the request signal is immediately stopped, and the small bag B is used until the discharge of the package M from the combination weighing device 1 is completed. A stop mode for performing packaging may be provided.
Further, the pool hopper 101 _i of the combination weighing device 1 is not always necessary. A timing hopper may be provided below the weighing hopper 102 _i .
Furthermore, it is not always necessary to use the combination weighing device 1 as the supply means, and for example, a supply conveyor may be used .

  This bag making and packaging machine can be used for the manufacture of continuous packaged goods.

It is a schematic side view which shows the combination weighing | measuring apparatus and bag making packaging machine concerning Example 1 of this invention. It is a schematic plan view shown in the state at the time of sealing of the horizontal sealing apparatus. It is a schematic plan view shown in the open state of the horizontal sealing device. It is a schematic block diagram which shows the packaging system. It is process drawing which shows the manufacturing process of continuous package goods. It is a schematic block diagram which shows the packaging system concerning Example 2 of this invention.

Explanation of symbols

1: Combination weighing device (supply means)
2: Bag making and packaging machine 25: Horizontal sealing device 26: Cutter device 50: Control unit (control means)
52: Memory (storage means)
53: Request signal counter 56: Touch screen (operation unit)
57: Emergency stop button 58: Discharge signal counter B: Small bag Bl: Notch Fb: Cylindrical packaging material H: Header LM: Concatenated product M: Package

Claims (3)

In a bag making and packaging machine capable of producing a continuous product including a predetermined number of sachets accommodated to be packaged and a header that is provided above the uppermost sachet and forms a hanging portion,
Welding means for welding a packaging material between the pouches and between the pouch and the header;
A cutting means for forming a cut in the packaging material in the welded region and cutting the packaging material at the upper end of the header to cut apart the continuous packaged goods,
An operation unit operated to stop the packaging operation;
Storage means for storing a predetermined number of the sachets for each one packaged product;
When the operation unit is operated to stop the packaging operation, regardless of the progress of the packaging operation, a predetermined number of sachets are generated and the upper end of the header is cut off to produce a continuous packaged product. A control means for stopping the packaging operation later ,
Before SL control means outputs a request signal requesting the supply of material to be packaged from above the feed means, and receives a discharge signal indicating the completion of the discharge of the packaged articles from said supply means,
The number of request signals or completion signals is counted with a counter for each packaged product,
The request signal is output to the supply unit until the request signal or completion signal counted by the counter matches a predetermined number stored in the storage unit,
A bag making and packaging machine that generates the header after generating the predetermined number of sachets and stops the packaging operation in a state where the continuous packaged goods are cut off. Oite to claim 1, emergency stop button for emergency stop-fill-seal machine is provided separately from the said operating unit, when the emergency stop button is pressed, regardless of the progress of the packaging operation A bag making and packaging machine that immediately stops the packaging operation. 3. The bag making and packaging machine according to claim 1, further comprising switching means for switching between an operation of creating a single package product in which each bag is cut off from each other and an operation of creating a continuous package product.

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