JP2011000786A - Bag-making unit and bag-making machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a bag-making part which, in restructuring a bag-making machine, facilitates operation of removing or adding bag-making parts and which, in the case of the adding, allows preliminary off-line preparation, and also to provide a bag-making machine which facilitates specification change of bag products and which enables set-up to be done in a short time.SOLUTION: The bag-making parts 31, 41, 51, 61 include: processing apparatuses 30, 40, 50, 60 which are used in a bag-making machine for sealing a continuous film F to form bags; and moving means 32, 42, 52, 62 which make movement possible for the purpose of the connection/separation, wherein the bag-making parts 31, 41, 51, 61 are freely separably connected to constitute the bag-making machine and are provided with driving means 33, 43, 53 for operating the processing apparatuses 30, 40, 50.

Description

  The present invention relates to a bag making unit and a bag making machine for making bags using a web such as a film.

  Conventionally, a bag making machine that forms a bag by performing various processes while intermittently or continuously transporting a web such as a film arranged in a horizontal direction (substantially horizontal direction) from the side of feeding an upstream original film The downstream bag is provided with a frame (machine frame) that is integrally formed up to the side that feeds the film continuously provided in a band shape and cuts it into individual bags. And the conventional bag making machine is provided with a plurality of stations on the base frame, a feeding device for feeding out the raw film at each station, a sealing device for forming the bag body, a cooling device for cooling the sealing portion, A processing device having various functions such as a cutting device that feeds out a film in which bags are continuously arranged in a belt shape and cuts into individual bags is installed (see, for example, Patent Document 1).

  In such a conventional bag making machine, when bags with different specifications (structure, shape, dimensions, etc.) are made, replacement and addition of processing devices such as a sealing device installed at a station constituting the bag making machine Alternatively, in order to perform an operation such as removal, it is necessary to perform an operation on the corresponding station with the entire bag making machine stopped. For this reason, when changing the bag-making product, there is a problem that it takes time to set up a partial replacement, addition or movement of a processing apparatus necessary for bag-making.

With respect to such a problem, the bag making machine disclosed in Patent Document 1 is configured such that the station can be moved upstream and downstream on the frame, and the size of the bag in the film flow direction (for example, the bag is turned sideways). When changing the width of the flat bag in the side-by-side bag making, the sealing device and cooling device are moved by the servo motor at each station, which is effective for shortening the setup time in changing the dimension in the flow direction. is there.
However, when changing the width of the standing pouch, which will be described later, the dimensions in the direction orthogonal to the flow (for example, the height of the bag in the two-sided side bag making) and the structure / shape of the bag, the bag making machine is still used. In order to perform work such as replacement or addition of each processing device such as a sealing device, a large-scale setup is required, and the setup takes a long time.
For example, when manufacturing packaging bags with different seal shapes, stop the entire bag making machine, wait for the seal tooth mold to cool, replace it with another seal tooth mold, and heat the new seal tooth mold. It is necessary to resume bag making after waiting for a predetermined temperature. For this reason, there is a problem that it takes an extremely long time to replace the seal tooth mold.
Furthermore, when adding or removing a device having a specific function, modification for adding a new station is required. In addition, if there is no space for adding a new station in the frame of the bag making machine, the frame will also be modified.

  As a proposal for solving such a problem, Patent Document 2 discloses a vertical bag making filling and packaging machine, not a pure bag making machine, but a packaging material forming module, a feeding operation module, which constitutes a bag making apparatus, Each of the modules such as the horizontal sealer operation module and the edge sealer operation module individually includes a module frame, and these module frames are detachably connected to each other in the vertical direction to construct a main frame of the bag making apparatus. A vertical bag making and filling and packaging machine is described.

The vertical bag filling and packaging machine described in Patent Document 2 is intended only for shortening the delivery time of the newly ordered packaging machine, and the specifications requested by the customer are determined in advance (before assembly of the vertical bag filling and packaging machine). Therefore, it is possible to easily cope by connecting the module frames in order from the bottom to the top.
However, this packaging machine is constructed by stacking each module frame on a horizontal sealer frame as a base. And since it is not assumed that the purchased customer changes the specification of a packaging machine, it does not have the technical idea of facilitating the work of disassembling and reconstructing the main frame once constructed. Therefore, in the daily bag making and filling process, when trying to modify this packaging machine to make bags with different specifications, the module frame in the middle is separated and a module frame having the necessary function is added or replaced. Requires that all module frames above it be removed in turn.
Therefore, in this packaging machine, even if various functions are modularized, it is not easy to change the module frame constituting the main frame, and it takes time to replace it. Also, the number of additional module frames is naturally limited by the strength of the horizontal sealer frame that is the base and the weight balance of the entire machine (stable independence).

Furthermore, the vertical bag-filling and packaging machine described in Patent Document 2 is intended only for shortening the delivery time, and since it is not assumed that the purchased customer will change the specifications of the packaging machine, it can be constructed as a complete mainframe. Operation is only possible once completed, and the individual module frames are not individually operable in isolation.
Therefore, for example, when manufacturing a packaging bag having a different seal shape, even if the seal tooth mold can be replaced with the module frame, the contact state (per mold) of the seal tooth mold when sealing the packaging material Since the adjustment is performed by raising the temperature of the seal member to a predetermined temperature, it is necessary to wait until the predetermined temperature is reached before performing the work.
In addition, when the material of the packaging film is changed, the sealing condition may be changed. However, when setting the sealing condition, it is necessary to wait until the temperature is raised to a predetermined temperature.
Therefore, in this packaging machine, since it is necessary to stop the packaging machine while performing these operations, there is a problem in that it takes a long time for setup and productivity is lowered.

JP 2002-326295 A JP 2008-001397 A

  The present invention has been made in view of the above circumstances. When a bag making machine is reconfigured, it is easy to remove or add a bag making unit. Separately from the bag making unit or as a spare for those bag making units, the bag making unit that can be prepared offline in advance, and the bag making that allows easy change of specifications of the bag making product and quick setup It is an object to provide a machine.

In order to solve the above-mentioned problems, the present invention comprises a processing device used in a bag making machine for forming a bag by sealing a continuous film and a moving means that enables movement for connection and separation, and is separable. A bag making unit that can be connected to form the bag making machine, wherein the bag making unit includes a drive unit that operates the processing device.
It is preferable that the bag making unit includes a control means by a computer, and the control of the processing device can be stored in a storage device of the computer.
The processing device mounted on the bag-making unit measures the distance between the same symbols that are printed on the film and appear intermittently, a conveying device that picks up and sends out the film, a sealing device that seals the film And a feeding pitch control device for controlling the feeding amount of the film, a decoration device for embossing and / or punching the film, and cutting the film in which the formed bags are continuously arranged in a band shape into individual bags. In addition, it is preferable that the processing device is one or a plurality of processing devices selected from a sending device that sends without cutting.
It is preferable that the bag making unit includes a connecting portion that holds the position of the feeding device and / or another adjacent bag making unit in a predetermined relationship and is detachably connected.

In addition, the present invention provides a bag making machine characterized in that one or more of the bag making units of the present invention and a feeding device for supplying a continuous film are separably connected.
It is preferable that the bag making unit is detachably connected while maintaining a predetermined relationship with the feeding device and / or another adjacent bag making unit.
It is preferable that the bag making unit can be separated and moved at least in the transport direction of the film.

According to the bag making unit of the present invention, the bag making unit including the processing device such as the feeding device and the sealing device includes the moving means such as the wheels, so that the bag making unit can be easily moved and combined with the feeding device. If it comprises, removal of a bag making unit and an additional operation | work can be performed easily.
In addition, since the driving means for operating the processing apparatus in which each bag-making unit is mounted is provided, when adding a bag-making unit, other bag-making units can be checked offline in advance during online operation, Preparations such as raising the temperature to the temperature can be made. Thereby, since this time can be reduced from setup, the fall of productivity can be suppressed.
Further, when the bag making unit of the present invention includes a computer control means, the control of the processing apparatus can be stored in the storage device of the computer. Thereby, it is possible to store the control of the processing device prepared offline in advance, and when the bag making unit is incorporated in the bag making machine, it is possible to omit the trouble of setting the control of the processing device again, A reduction in productivity can be suppressed.
Moreover, when the bag making unit of the present invention includes a connecting portion, when the bag making machine is configured in combination with the feeding device, the film can be conveyed accurately and the bag can be made with high accuracy.

According to the bag making machine of the present invention, since each bag making unit can be easily removed and added, the bag making machine can be easily changed in specifications and set up in a short time. be able to.
Further, when the bag making unit of the bag making machine of the present invention is configured to be separably connected while maintaining a predetermined relationship with the feeding device and / or other adjacent bag making unit, The film can be conveyed accurately and can be made with high accuracy.

It is a front view which shows typically an example of the bag making machine of this invention. (A)-(d) is a front view which shows typically the bag making unit of this invention. It is sectional drawing which shows an example of the connection part of the bag making unit of this invention, the connection jig used for this connection part, a positioning pin, and the recessed part for latching. It is sectional drawing which shows a connection jig, a positioning pin, and the recessed part for latching when the bag making units of FIG. 3 are isolate | separated. It is a front view which shows typically the modification of the bag making machine of this invention.

The present invention will be described below based on preferred embodiments with reference to the drawings.
In FIG. 1, an example of the bag making machine of this invention provided with the bag making unit of this invention is shown typically. FIG. 2 also shows an example of the bag making unit of the present invention (a) sealing device 40, (b) transport pitch control device 60, (c) decoration device 50, and (d) delivery device 30. , Shown separately.

The bag making machine 10 according to this embodiment includes a feeding device 20 that feeds and feeds a film F that is continuous in the longitudinal direction from a raw roll in which the raw film 22f is wound in a roll shape, and the bag making unit of the present invention. One or more.
The feeding device 20 of the present embodiment is fixed to the floor B in order to serve as a base point of the bag making machine 10 of the present embodiment. Further, by being fixed, stable feeding can be performed even when the raw roll is heavy.
The feeding device 20 is provided with a brake and a driving means, and a feeding shaft 22 that feeds the original film 22f, and the cutter film 23f cuts the original film 22f into two at the center in the width direction (half-cut) to form a multileaf base film 23f , 23f, and the inner surfaces of the pair of half-cut base films 23f, 23f conveyed through a predetermined gap are opposed to each other, and the positions of the front and back patterns are made to coincide with each other. A pair of upper and lower dancer rolls 25, 25 that accumulate in order to convert the feeding of each base film 23f, 23f from continuous feed to intermittent feed, The feeding shaft 26 for feeding out another base film 26f inserted between the multi-leaf base films 23f and 23f, and a base film having substantially the same width. Arm 23f, between 23f and a take-up means 27 for feeding out anyway by superimposing another substrate film 26f. As the take-up means 27, for example, a pair of drive rolls can be used.
That is, the film F of this embodiment is composed of a pair of base film 23f and 23f and another base film 26f inserted between them.
The supply shaft 22 is not limited to one, and may be a plurality of, or may be mounted on a rotatable turret.

The feeding device 20 can carry out the present invention even if the other base film 26f is omitted as in the bag making machine 10A shown in FIG. Moreover, it can replace with the other base film 26f, and can also employ | adopt the fitting member called a polychuck. When the polychuck is stored in a cardboard box in the form of a long continuous sheet and folded in a bobbin or wound state, the sheet body should be fed out from the cardboard box instead of the feeding shaft 26. Can do. Further, a plurality of feeding shafts 26 for feeding out the other base film 26f can be provided. For example, both the fitting member and the other base film 26f can be adopted.
Moreover, when using the base film 23f previously separated into a pair of front and back, the present invention can be carried out even if the compounding means 23 is omitted.
Further, the compound leaf forming means 23, the aligning roll 24, the dancer roll 25, the feeding shaft 26, and the take-up means 27 may be mounted on an independent bag-making unit, either alone or in combination.

Before and after half-cutting the original film 22f in the compound leaf forming means 23, rod-shaped guide means (turn bars) 23a arranged at 45 ° with respect to the vertical direction are provided so that the width direction of the original film 22f is vertical. The plate-shaped guide means (M plate) in which the V-shaped notches with a sandwich angle of 90 ° on which the original film 22f slides become a pair of turn bars 23b, 23b are provided, Half-cutting is performed with a cutter 23c provided at a connection portion (center) between the pair of turn bars 23b and 23b. Thereafter, the direction is changed by the pair of turn bars 23b and 23b so that the width direction of the half-cut base film 23f becomes the horizontal direction.
In the case where the feed shaft 22 for feeding the original film 22f is arranged in the vertical direction, the present invention can be carried out even if the turn bar 23a is omitted.
In addition, although not particularly illustrated, the bifoliating means is not limited to the one provided with the cutter 23c for cutting the original film along its longitudinal direction, and the original film is folded in half at the center in the width direction, It is also possible to use a compounding means.

  One or both of the aligning rolls 24, 24 can be moved by a servo motor (not shown), and one or both of the base films 23f, 23f are in the upstream / downstream direction and the base film, which are the feeding directions of the overlap. It is possible to move in the width direction of 23f and 23f. Further, the servo motor that moves the aligning roll 24 is operated by an optical sensor (not shown) that detects the positions of the pitch printed symbols and the width direction ends of the base film 23f and 23f, and output values of these optical sensors. Based on the above, the pitch printing symbols of the base film 23f and 23f and the positions of both ends in the width direction are respectively compared, and control for detecting the positional deviation along the feed direction and the width direction of the upper and lower base films 23f and 23f is performed. It is controlled by means (not shown). For example, a photoelectric tube or a CCD camera is used as the optical sensor.

  The bag making machine 10 according to the present embodiment includes, as a bag making unit, a bag making unit 31 equipped with a sending device 30 that takes a film F in which a packaging bag is continuously formed, cuts it into individual packaging bags, and sends it out. A bag-making unit 41 equipped with one or more sealing devices 40 for sealing the film F, and a bag-making device equipped with a decorating device 50 for decorating the packaging bag body by embossing and / or punching the film F Transport for controlling the transport pitch of the film F by measuring the distance between the unit 51 and pitch control marks printed on the film F or appearing intermittently or specific symbols (hereinafter referred to as “pitch print symbols”). A bag making unit 61 equipped with a pitch control device 60 is provided. These bag making units can be moved separately from each other, and can be separated by holding the position of the feeding device and / or other adjacent bag making units in a predetermined relationship using a connecting jig described later. It is connected to.

  The delivery device 30 is a device for taking out and sending out the film F similarly to the take-out means 27, and for example, a pair of drive rolls can be used. In the case of the present embodiment, the take-up means 27 takes the continuous feed film F accumulated by the upstream dancer rolls 25 and 25 and intermittently sends it to the downstream side. On the other hand, the delivery device 30 takes out the film F in which the packaging bags are continuously formed in a band shape, cuts them into individual packaging bags, and sends them out. The take-out means 27 and the delivery of the delivery device 30 are interlocked, and the timing and amount thereof are controlled by a computer (not shown) that controls the bag making machine 10 as a whole. Thus, the conveyance amount and tension | tensile_strength of the film F at the time of conveyance are adjusted by adjusting both sending amount.

  When transporting the film F, for example, when the transport distance of the film F is long, the film F is placed at an intermediate position between the feeding device 20 (more specifically, the take-up means 27) and the delivery device 30 or other positions. A conveying device (not shown) for picking up and sending out can be provided. This type of transport device can be incorporated as a processing device in the bag making unit of the present invention. As a transport device, for example, a member such as a transport roller or a clamping bar is driven to move the film. The bag-making unit of the present invention including the conveying device is equipped with a conveying roller, a clamping bar, and the like, as well as driving means such as a servo motor and an air cylinder for driving them.

  On the downstream side of the delivery device 30, there is provided a cutting means 34 for cutting the film F in which the bag making is completed and the packaging bag is continuous in a band shape in the width direction. The delivery device 30 and the cutting means 34 are mounted on the bag making unit 31 together with a drive means 33 such as a servo motor or a hydraulic cylinder for driving them. In order to receive a packaging bag obtained by cutting the film F by the cutting means 34, a receiving device (not shown) including a conveying means such as a belt conveyor or a plate chain conveyor, a collecting means for collecting a predetermined number of packaging bags, and packaging A bagging device (not shown) that packs a predetermined number of bags at a time can be added to the bag making machine 10.

  In the present invention, the delivery device 30 is not limited to a processing device that cuts the taken film F into individual packaging bags and sends it further downstream, but is a processing device that sends out the taken film F and winds it into a roll. Also good. In this case, the cutting means 34 for cutting the film F in the width direction is omitted, and a winding means is provided instead. The cutting means 34, the receiving device, the boxing device and the winding device may be installed on the floor surface B, but may be mounted on the bag making unit 31 together with the sending device 30 or independently. It may be mounted and connected to another bag making unit.

In the bag making machine 10 of the present invention, at least one of the sealing devices 40 is a processing device that seals an essential film, and is mounted on the bag making unit 41.
The sealing device 40 can set a predetermined seal tooth mold (not shown) according to the specification of the packaging bag so as to be replaceable, and has drive means such as a servo motor and a hydraulic cylinder for driving the seal tooth mold, It is possible to seal the film F by heat sealing, impulse sealing, ultrasonic sealing, or the like. When the sealing device 40 seals the film F by heat sealing, for example, the film F is formed by a pair of upper and lower sealing teeth including a temperature sensor for temperature control for heat sealing and a heater for heating (not shown). The seal part is heated and controlled while the temperature is controlled by a temperature controller, and the heated seal part is cooled by being sandwiched by a pair of upper and lower cooling tooth molds provided with a cooling water jacket (not shown).
The seal tooth mold and the cooling tooth mold contact with the film F during sealing and cooling, and the film F needs to be separated from the film F when the film F is heated or cooled and pressurized, and the sealing and cooling are completed. The drive means 43 such as a servo motor and a hydraulic cylinder for driving the seal tooth mold is mounted on each bag making unit 41 together with the seal tooth mold and the cooling tooth mold.

The form of the seal tooth mold can be appropriately set according to the object to be sealed, such as a vertical seal or a horizontal seal of the packaging bag body, a spout attached to the packaging bag body, or a mounting seal such as a polychuck. Usually, the bag making machine 10 includes a plurality of sealing devices 40, and individual seal tooth types having different forms can be mounted and combined in separate bag making units.
The seal device 40 does not necessarily have to be provided with a pair of seal teeth and cooling teeth, and each may be mounted in a separate bag making unit as an independent seal device.
Since the seal tooth mold and the cooling tooth mold move up and down, a tooth mold that forms a notch for opening the packaging bag together with these tooth molds can be mounted on the bag making unit 41.

  The decorating device 50 is a device that is mounted on the bag making unit 51 and processes the film F by embossing and / or punching. For the purpose of decoration, the film F is trimmed along the outer shape of the packaging bag in order to impart design properties to the packaging bag or to form a spout in the packaging bag for liquid, For example, to enlarge the flow path of the spout on the film, or to form a bulge portion for imparting design properties to the packaging bag by providing irregularities of letters and designs. Further, the notch may be formed by die cutting.

  The decorating device 50 is mounted on the bag making unit 51 together with a drive means 53 such as a servo motor or an air cylinder for driving a mold used for stamping and punching. In the present embodiment, the decoration device 50 is disposed on the downstream side of the sealing device 40, but the installation order of the sealing device 40 and the decoration device 50 is arbitrary, and the film F before or during sealing is added. It can also be decorated. It is also possible to provide a plurality of decoration devices 50 mounted on the bag making unit 51.

  The transport pitch control device 60 is a device that is mounted on the bag making unit 61 and controls the transport pitch of the film F by measuring the position of a pitch printing pattern printed on the film F. Specifically, for example, a pitch printing pattern provided on the base film 23f is detected by an optical sensor such as a CCD camera, and information obtained from the optical sensor is directly or comprehensively controlled over the entire bag making machine 10. The transfer pitch is controlled by transmitting to the take-up means 27 and / or the delivery device 30 via a computer, adjusting the delivery amount, and controlling the carry amount and tension of the film F.

  The bag making machine 10 according to this embodiment includes a bag making unit 31 having a delivery device 30, a bag making unit 41 having a sealing device 40, a bag making unit 51 having a decorating device 50, and a bag making unit having a transport pitch control device 60. Each bag making unit of the present invention of the unit 61 is provided with a moving means that enables movement for connection and separation. The moving means is, for example, wheels (casters whose traveling direction can be freely changed in this embodiment) 32, 42, 52, 62, and intersects the transport direction of the film F and the transport direction of the film F on the floor surface B. It is easy to move in a direction (for example, a direction perpendicular to the paper surface of FIG. 1). Thereby, when exchanging, adding or removing these processing devices, it is possible to move the bag making units 31, 41, 51, 61 and reconstruct the bag making machine 10 easily.

Specifically, when the bag making machine 10 is reconstructed, unnecessary bag making units are discharged in a direction crossing the film F transport direction, and the necessary bag making units are taken from a direction intersecting the film F transport direction. insert. When there is no empty space at the time of insertion, the bag making unit downstream from the insertion position can be moved further downstream to ensure the space for insertion.
And when rebuilding the bag making machine 10, when an empty space is generated, it is preferable to move the bag making unit upstream to fill the empty space. Thereby, in order to hold | maintain and connect with a feeding apparatus and / or another adjacent bag making unit in a predetermined relationship, it becomes possible to connect using the connecting jig and positioning pin which are mentioned later.

In the bag making machine 10 of this embodiment, each bag making unit may be movable by laying rails having a convex or concave cross section on the floor or ceiling. In this case, it is preferable that each bag making unit is provided with wheels, crawlers, and the like as moving means (running means) that facilitates movement along the rails. Of course, the moving means may be a sliding portion that slides smoothly on the rail. And in order to make a movement easy also in the direction which cross | intersects the conveyance direction of the film F, it is preferable to provide the switching apparatus like the apparatus which switches the rail track of a train, for example.
When a rail is laid, it becomes easy to maintain the position of the feeding device and / or other adjacent bag making unit in a predetermined relationship. In this case, the rail is preferably formed with a certain degree of accuracy. Further, the wheels do not necessarily have to be freely changed in direction like casters, and may have a fixed axle. Such wheels can be easily moved in the transport direction of the film F by providing driving means or by assisting movement by incorporating a rack and a pinion.
When the wheels are casters, it is sufficient to connect the bag making units to each other using the connecting jig 3 and the positioning pins 4 if the floor B is provided horizontally and flat with a certain degree of accuracy. Position accuracy can be realized, and no adjustment work is required.

When the bag making units 31, 41, 51, 61 are detachably connectable to each other or the feeding device 20 using a connecting jig, the positions of the feeding device and / or other adjacent bag making units are located. Can be held in a predetermined relationship, the film can be conveyed accurately, and the bag can be made with high accuracy.
Such a connecting jig will be described with reference to FIGS. 3 and 4, the feeding device 20 and the bag making units 31, 41, 51, 61 are not distinguished from each other, and are described as two adjacent bag making units 1 and 2 that are connected to each other. One of the bag making units is denoted by reference numeral 1 and the other is denoted by reference numeral 2.

As shown in FIG. 3, the connecting jig 3 in this embodiment includes a connecting plate 3a provided in each of the bag making units 1 and 2, and a bolt 3c inserted through a mounting hole 3b formed in the connecting plate 3a. And what was comprised from the nut 3d fastened by this volt | bolt 3c can be used. In this example, the bolt 3c is inserted through both the bag making units 1 and 2 from the mounting hole 3b of the connecting plate 3a, and the connecting plate 3a is sandwiched between the head of the bolt 3c and the three nuts 3d. Prevents 3c from coming off and loosening.
Instead of the bolt 3c having a head at one end, a retaining bolt (stay bolt) having a screw at both ends may be used, and the respective connecting plates 3a may be connected so as to be sandwiched between two nuts 3d.

Moreover, in the connection location between the bag making units 1 and 2, it is possible to arrange a component whose length is adjusted in order to accurately determine the distance between the bag making units 1 and 2. As such a component, for example, a positioning pin 4 including a large-diameter barrel portion 4a to be positioned and a small-diameter locking portion 4b that protrudes from both ends of the trunk portion 4a to prevent the connecting jig 3 from falling off is exemplified. be able to.
The positioning pin 4 is used in such a manner that the locking portion 4b of the positioning pin 4 is inserted and fitted into a locking recess 5 provided in the bag making unit 1 so as to protrude in the horizontal direction. The locking portion 4b of the positioning pin 4 is inserted and fitted into the locking recess 5 provided.

Then, when connecting the bag making units 1 and 2 using the connecting jig 3, the positioning pins 4 are inserted and fitted into the locking recesses 5, thereby positioning pins 4. 4 is provided without dropping, and the positional accuracy between the bag making units 1 and 2 can be ensured. In order to accurately position the bag making units 1 and 2, it is desirable to install at least one, preferably three or more positioning pins 4 between the bag making units 1 and 2.
In other words, it can be said that the connecting jig 3 has a function of positioning, but rather has a function of preventing the positioning pins 4 from falling off. Therefore, the insertion fitting between the respective locking portions 4b of the positioning pins 4 and the locking recesses 5 of the bag-making units 1 and 2 does not have to be high in accuracy and does not have to be high in strength. However, the body portion 4a of the positioning pin 4 needs to have a suitable strength and precision that can be durable even if it is sandwiched between the bag making units 1 and 2 and receives axial pressure from both ends.

In the case of this embodiment, the direction in which the locking portion 4b of the positioning pin 4 is inserted into the locking recess 5 is the direction along the transport direction of the film F (forward direction and reverse direction). Accordingly, the connecting jig 3 can be attached and detached simultaneously with the separation and connection between the bag making units 1 and 2.
Thus, when it has a connection part which connects between the bag making units 1 and 2 adjacent like the connection jig 3 and the positioning pin 4, a film can be conveyed and the positioning of the processing apparatus with respect to the film can be performed accurately and with high accuracy. Can be bag-made. In addition to the connection between the bag making units 1 and 2, the bag making unit is guided or positioned at a predetermined position on the movement path such as the floor, ceiling, rail, etc. in order to maintain the positional relationship of the bag making unit. It is also possible to provide means for doing so.

According to the bag making machine 10 of this embodiment, the bag making units 31, 41, 51 are provided with the individual drive means 33, 43, 53 for operating the processing devices 30, 40, 50. When the unit is replaced, added or removed, the bag making units 31, 41, 51 can be operated independently. As a result, when the bag making machine 10 is reconstructed, it is possible to perform operation confirmation and setting operation conditions for a bag making unit that will be a new member by taking a sufficient time in advance.
In the case where the bag making machine 10 includes a processing device that does not require a driving means such as a sensor device or an inspection device, a bag making unit that does not have a driving means can be used in combination. Also in this case, if each bag making unit has a moving means, the replacement, addition or removal work becomes easy.

And since the bag making units 31, 41, 51, 61 of this embodiment are provided with control means by a computer (not shown) and control of the processing devices 30, 40, 50, 60 can be stored by the computer, The operating conditions set over a sufficient time can be stored.
Therefore, when manufacturing bags with different specifications (structure, shape, dimensions, etc.), the conveyance of the film F is stopped, and if the bag making units 31, 41, 51, 61 are replaced, added or removed, the operation is resumed immediately. can do.

For example, a standing pouch having a folded film at the bottom is a typical example of a bag that cannot be made unless it is a side-by-side bag. The folded film at the bottom is sealed in an arc shape. Therefore, when making a standing pouch and changing the width of the bag, it is necessary to use bottom seal tooth molds having different seal shapes. In this case, conventionally, the entire bag making machine is stopped, and after waiting for the bottom seal tooth mold to cool, it is replaced with another bottom seal tooth mold, and the new bottom seal tooth mold is heated to reach a predetermined temperature. It is necessary to resume bag making after waiting. For this reason, there has been a problem that the replacement work takes a very long time.
On the other hand, according to the bag making machine 10 of the present embodiment, since the sealing device 40 having the bottom seal tooth mold having different specifications can be mounted on different bag making units, preparations are made in advance. be able to.

Specifically, for example, after a first specification standing pouch is manufactured using a first bottom seal tooth mold, a second specification standing pouch is manufactured using a second bottom seal tooth mold. The first sealing device 40 having the first bottom seal tooth mold is mounted on the first bag making unit 41. Separately, the second seal having the second bottom seal tooth mold is provided. The device 40 is mounted on the second bag making unit 41.
Then, the operation of heating the second bottom seal tooth mold and adjusting its temperature and mold contact is made by making a standing pouch of the first specification that was performed before the start of the replacement work, that is, before the replacement. Do it while you are. Adjustment of the sealing temperature and sealing pressure at this time is performed by a computer mounted on the second bag making unit 41, and the obtained result is stored in a storage device of the computer.

And the operation | work which replace | exchanges a 1st bottom seal tooth type | mold with a 2nd bottom seal tooth type | mold does not wait for the 1st bottom seal tooth type | mold to cool, after stopping the bag making machine 10. The first bag making unit 41 is retracted from the bag making machine 10 together with the second sealing device 40 and the second bag making unit 41 is incorporated into the bag making machine 10.
By these procedures, the replacement operation of the bottom seal tooth mold can be performed very quickly.

That is, according to the bag making machine 10 of the present invention, it is possible to perform preparation work such as tooth mold replacement with another bag making unit during operation of the bag making line, and prepare a bag making unit that has been prepared for replacement. When the bag making unit in operation is stopped and replaced as it is, the stop time of the bag making machine 10 can be shortened to the limit and the production efficiency can be increased.
In the bag making machine 10 of the present invention, each bag making unit can be taken in and out on either the left or right side with respect to the width direction of the film F. For example, the first bag making unit is placed on the right side from the bag making machine 10. The second bag making unit is incorporated into the bag making machine 10 from the left side (or the left and right sides may be reversed), so that the replacement work can be performed more quickly.

Moreover, in the bag making machine 10 of the present invention in which the bag making units of the present invention are connected, control in which the respective bag making units are interlocked is possible.
Specifically, in order to link the control between the bag making units, a separate computer for controlling the entire bag making machine 10 is separately provided, and a signal for controlling the computer mounted on each bag making unit by wire or wirelessly. Is transmitted. Based on this signal, for example, the computer mounted on the second bag making unit 41 described above controls the second sealing device 40 based on the result obtained by adjusting the sealing temperature and the sealing pressure. In this way, the computer that comprehensively controls the entire bag making machine 10 controls the computer installed in each bag making unit, so that it is installed in each bag making unit performed by the computer installed in each bag making unit. The control of the processing device is linked.
Alternatively, the processing condition data stored in the storage device of the computer installed in each bag making unit is read out by a computer that controls the entire bag making machine 10 and processed directly on each bag making unit. Even if the apparatus is controlled, the control of the processing apparatus mounted in each bag making unit is linked.

  The present invention can be used for manufacturing various packaging bags such as standing pouches, flat bags, and gusset bags.

F ... Film, 1 ... One bag making unit, 2 ... The other bag making unit, 3 ... Connection jig (connection part), 4 ... Positioning pin, 5 ... Recess for locking 10, 10A ... Bag making machine, DESCRIPTION OF SYMBOLS 20 ... Feeding device, 22, 26 ... Feeding shaft, 22f ... Raw film, 23f ... Base film, 26f ... Other base film, 30 ... Delivery device (processing device), 40 ... Sealing device (processing device), DESCRIPTION OF SYMBOLS 50 ... Decorating device (processing device), 60 ... Conveyance pitch control device (processing device), 31, 41, 51, 61 ... Bag making unit, 32, 42, 52, 62 ... Wheel (moving means), 33, 43 53 ... Driving means.

Claims (7)

  A processing apparatus used in a bag making machine that forms a bag by sealing a continuous film and a moving means that enables movement for connection and separation are provided, and the bag making machine is configured to be detachably connected. The bag making unit is characterized in that the bag making unit includes a driving means for operating the processing apparatus.   The bag making unit according to claim 1, wherein the bag making unit includes a computer control unit, and the control of the processing apparatus can be stored in a storage device of the computer.   The processing device mounted on the bag-making unit measures the distance between the same symbols that are printed on the film and appear intermittently, a conveying device that picks up and sends out the film, a sealing device that seals the film And a feeding pitch control device for controlling the feeding amount of the film, a decoration device for embossing and / or punching the film, and cutting the film in which the formed bags are continuously arranged in a band shape into individual bags. The bag making unit according to claim 1, wherein the bag making unit is one or a plurality of processing devices selected from a sending device that feeds without cutting.   The said bag making unit is provided with the connection part which hold | maintains the position with the said feeding apparatus and / or other adjacent bag making units in a predetermined relationship, and is connected so that attachment or detachment is possible. The bag making unit according to any one of the above.   5. A bag making machine comprising one or a plurality of bag making units according to claim 1 and a feeding device for supplying a continuous film which are detachably connected.   6. The bag making machine according to claim 5, wherein the bag making unit is detachably connected while maintaining a predetermined relationship with the feeding device and / or another adjacent bag making unit. .   The bag making machine according to claim 5 or 6, wherein the bag making unit can be separated and moved at least in a transport direction of the film.

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