JP2021147098A - Bag packaging machine - Google Patents

Abstract

To provide a bag packaging machine capable of switching a printing mode to a printing mode suitable for production on the basis of information inputted during production.SOLUTION: In a bag packaging machine 1, a control part 7, when determining that it is the timing of printing on a film F when the film F is conveyed on the basis of previously input information, switches a printing mode to a first printing mode. The control part 7, when determining that it is the timing of printing on the film F when the film F is stopped on the basis of previously input information, switches a printing mode to a second printing mode. Since a printing mode, regardless of whether bags are continuously produced or intermittently produced, is determined by a timing of printing on a packaging material, a printing mode suitable for production is selected, which results in prevention of erroneous operation, with no need for an operator to be aware of which printing mode is used for operation.SELECTED DRAWING: Figure 7

Description

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

Conventionally, as a bag-making and wrapping machine, a bag-making and wrapping machine for manufacturing a bag in which articles are packaged by laterally sealing a wrapping material formed into a cylindrical shape is known. For example, the bag-making and packaging machine disclosed in Patent Document 1 (Japanese Unexamined Patent Publication No. 2012-136270) includes a printing device for printing preset information on a packaging material before being formed into a cylindrical shape. It is provided with a platen arranged so as to face the print head of the printing device.

Bag-making and packaging machines are mainly classified into continuous packaging machines that perform horizontal sealing while continuously transporting packaging materials and intermittent packaging machines that perform horizontal sealing while intermittently transporting packaging materials. The printing device of the continuous packaging machine prints on the packaging material being conveyed without stopping the transportation of the packaging material. The printing device of the intermittent packaging machine prints on the stopped packaging material at the timing when the transportation of the packaging material is stopped.

A continuous bag-making and packaging machine is used for a bag-making and packaging machine in which the operation mode can be switched between a continuous transfer mode in which the packaging material is continuously conveyed and an intermittent transfer mode in which the packaging material is intermittently conveyed. It is necessary to install both the printing device and platen set and the printing device and platen set used in the intermittent bag making and packaging machine, and there are problems of "securing space" and "controlling cost increase". Was there.

However, in recent years, it has become feasible to realize a bag-making and packaging machine equipped with only one printing device and capable of easily switching between a platen used in a continuous bag-making and packaging machine and a platen used in an intermittent bag-making and packaging machine. It has become.

On the other hand, even if the print mode can be switched, if the selection of the platen switching used in each operation mode is incorrect, the productivity may decrease due to the increase in defective products.

An object of the present invention is to provide a bag making and packaging machine capable of switching a printing mode to a printing mode suitable for production based on information input at the time of production.

The bag-making / packaging machine according to the first aspect of the present invention is a bag-making / packaging machine that forms a cylinder while transporting the packaging material, and puts an article into the tubular packaging material to wrap the product. , With a control unit. The printing unit prints on the packaging material. The control unit controls the operation of the printing unit based on predetermined information input in advance. The printing unit has a first printing mode and a second printing mode as selectable printing modes for printing on the packaging material. The first printing mode is a mode for printing on the transported packaging material. The second printing mode is a mode in which printing is performed on the stopped packaging material. When the control unit determines that the timing for printing on the packaging material is when the packaging material is being conveyed based on the predetermined information, the control unit switches the printing mode to the first printing mode. Further, when the control unit determines that the timing of printing on the packaging material is when the packaging material is stopped based on the predetermined information, the control unit switches the printing mode to the second printing mode.

In this bag-making and packaging machine, the printing mode is determined by the timing of printing on the packaging material regardless of whether the bag is continuously made or intermittently, so the operator operates in which printing mode. There is no need to be aware of this, and a print mode suitable for production is selected, which also helps prevent erroneous operation.

The bag-making / packaging machine according to the second aspect of the present invention is a bag-making / packaging machine that forms a cylinder while transporting the packaging material, and puts an article into the tubular packaging material to wrap the product. , A control unit and an instruction unit are provided. The printing unit has a plurality of selectable printing modes for printing on the packaging material. The control unit controls the operation of the printing unit. The instruction unit instructs the control unit to switch the print mode. The print mode includes a first print mode and a second print mode. The first printing mode is a mode for printing on the transported packaging material. The second printing mode is a mode in which printing is performed on the stopped packaging material. When the control unit determines that the timing for printing on the packaging material is when the packaging material is being conveyed based on the predetermined information input in advance and the instruction from the instruction unit, the control unit sets the printing mode to the first. Instruct to switch to print mode. Further, when the control unit determines that the timing for printing on the packaging material is when the packaging material is stopped based on the predetermined information input in advance and the instruction from the instruction unit, the control unit sets the print mode. Instructs to switch to the second print mode.

The bag-making / packaging machine according to the third aspect of the present invention is the bag-making / packaging machine according to the first aspect or the second aspect, and the above-mentioned predetermined information includes the printing position of the packaging material and the length of the bag. There is.

In this bag-making and packaging machine, the printing position of the packaging material and the length of the bag are the information to be input to the bag-making and packaging machine before production. You can definitely get it.

The bag-making and packaging machine according to the fourth aspect of the present invention is a bag-making and packaging machine according to any one of the first to third aspects, and the control unit can select to convey the packaging material. The transport mode has a first transport mode and a second transport mode. The first transport mode is a mode in which the packaging material is continuously transported. The second transport mode is a mode in which the packaging material is intermittently transported. The predetermined information includes the selection result of the transport mode.

The bag-making / packaging machine according to the fifth aspect of the present invention is the bag-making / packaging machine according to the fourth aspect, and the control unit has a transfer mode of the second transfer mode and a timing of printing on the packaging material. However, when it is determined that the packaging material is being conveyed, the printing mode is switched to the first printing mode.

In this bag making and packaging machine, the first transfer mode (continuous) is not simply switched between the first print mode and the second transfer mode (intermittent) is the second print mode, but the second transfer mode (intermittent) is used. Since the printing mode is switched depending on whether the printing timing is when the packaging material is being conveyed or when the packaging material is stopped, a printing mode suitable for production is selected.

In the bag-making and packaging machine according to the present invention, the printing mode is determined by the timing of printing on the packaging material regardless of whether the bag is continuously produced or intermittently produced. Therefore, the operator can use which printing mode. There is no need to be conscious of whether to operate with, and the print mode suitable for production is selected, which also leads to prevention of erroneous operation.

The perspective view of the bag making packaging machine which concerns on 1st Embodiment of this invention. The perspective view which shows the schematic structure of the bag making packaging unit. Schematic side view of the lateral seal mechanism as viewed from the right side of FIG. The schematic side view of the film supply unit when the printing apparatus of the bag making and packaging machine which concerns on 1st Embodiment is operating in 1st printing mode. The schematic side view of the film supply unit when the printing apparatus of the bag making and packaging machine which concerns on 1st Embodiment is operating in 2nd printing mode. Block diagram of the control unit. Flow chart of print mode switching control performed before the operation of the film supply unit. The schematic side view of the film supply unit when the printing apparatus of the bag making and packaging machine which concerns on 2nd Embodiment is operating in 1st printing mode. The schematic side view of the film supply unit when the printing apparatus of the bag making and packaging machine which concerns on 2nd Embodiment is operating in the 2nd printing mode. The schematic side view of the film supply unit when the printing apparatus of the bag making and packaging machine which concerns on 3rd Embodiment is operating in the 1st printing mode. The schematic side view of the film supply unit when the printing apparatus of the bag making and packaging machine which concerns on 3rd Embodiment is operating in the 2nd printing mode. FIG. 5 is a schematic side view of a film supply unit when the printing device of the bag making / packaging machine according to the fourth embodiment is operating in the first printing mode. FIG. 5 is a schematic side view of a film supply unit when the printing device of the bag making / packaging machine according to the fourth embodiment is operating in the second printing mode. FIG. 5 is a schematic side view of a film supply unit when the printing device of the bag making / packaging machine according to the fifth embodiment is operating in the first printing mode. FIG. 5 is a schematic side view of a film supply unit when the printing device of the bag making / packaging machine according to the fifth embodiment is operating in the second printing mode.

An embodiment of the present invention will be described with reference to the drawings. The embodiments described below are one of the specific examples of the present invention and do not limit the technical scope of the present invention.

<First Embodiment>
(1) Configuration of Bag-Making and Packaging Machine 1 FIG. 1 is a perspective view of the bag-making and wrapping machine 1 according to the first embodiment of the present invention. The bag-making and packaging machine 1 is a machine for bagging an object to be packaged such as food. The bag-making / packaging machine 1 mainly includes a combination measuring unit 2, a bag-making / packaging unit 3, a film supply unit 4, an operation switch 5, a liquid crystal display 6, and a control unit 7.

(1-1) Combination weighing unit 2
The combination weighing unit 2 is arranged above the bag making and packaging unit 3. The combination weighing unit 2 weighs the object to be packaged by a plurality of weighing hoppers, and combines the weight values measured by each weighing hopper so as to have a predetermined total weight. The combination weighing unit 2 discharges the combined objects to be packaged having a predetermined total weight downward and supplies them to the bag making / packaging unit 3.

(1-2) Bag making and packaging unit 3
The bag-making and packaging unit 3 seals and packages the packaged object in the bag at the timing when the packaged object is supplied from the combination measuring unit 2. The detailed configuration and operation of the bag-making and packaging unit 3 will be described later.

(1-3) Film supply unit 4
The film supply unit 4 is installed adjacent to the bag-making and packaging unit 3, and feeds out the film formed in the bag and supplies it to the bag-making and packaging unit 3. A film roll around which a film is wound is set in the film supply unit 4. The detailed configuration and operation of the film supply unit 4 will be described later.

(1-4) Operation switch 5 and liquid crystal display 6
The operation switch 5 and the liquid crystal display 6 are attached to the front surface of the bag making / packaging machine 1. The liquid crystal display 6 is a touch panel type display, and is arranged at a position that can be visually recognized by the operator of the operation switch 5.

The operation switch 5 and the liquid crystal display 6 function as an input device that receives instructions to the bag-making / packaging machine 1 and settings related to the bag-making / packaging machine 1. The liquid crystal display 6 functions as an output device that displays information about the bag making / packaging machine 1.

(1-5) Control unit 7
The control unit 7 controls the combination weighing unit 2, the bag making / packaging unit 3 and the film supply unit 4 based on the inputs from the operation switch 5 and the liquid crystal display 6, and outputs various information to the liquid crystal display 6. The detailed configuration and operation of the control unit 7 will be described later.

(2) Configuration of Bag-making and Packaging Unit FIG. 2 is a perspective view showing a schematic configuration of the bag-making and packaging unit 3. In FIG. 2, six directions consisting of "front (front)", "rear (rear)", "top", "bottom", "left" and "right" are defined.

The bag-making / packaging unit 3 is mainly composed of a molding mechanism 13, a pull-down belt mechanism 14, a vertical sealing mechanism 15, and a horizontal sealing mechanism 17. The molding mechanism 13 molds the sheet-shaped film F supplied from the film supply unit 4 into a cylindrical shape.

The lateral sealing mechanism 17 seals the tubular film Fc in the lateral direction orthogonal to the conveying direction to form a bag B in which the upper end portion and the lower end portion are laterally sealed.

The bag making and packaging machine 1 has two operation modes: a continuous transport mode in which the bag B is formed while continuously transporting the film F, and an intermittent transport mode in which the bag B is formed while intermittently transporting the film F. Have. The continuous transfer mode is an operation mode in which the bag B is formed without stopping the transfer of the film F. The intermittent transfer mode is an operation mode for forming the bag B while temporarily stopping the transfer of the film F at a predetermined timing.

In the continuous transport mode, the bag making / packaging unit 3 seals the film F being transported. In the intermittent transfer mode, the bag making / packaging unit 3 seals the stopped film F at the timing when the transfer of the film F is stopped. The control unit 7 of the bag-making / packaging machine 1 controls the bag-making / packaging unit 3 according to the operation mode.

(2-1) Molding mechanism 13
The molding mechanism 13 has a tube 13a and a former 13b. The tube 13a is a cylindrical member with open upper and lower ends. The object to be packaged C supplied from the combination weighing unit 2 is charged into the opening at the upper end of the tube 13a. The former 13b is arranged so as to surround the tube 13a. The film F unwound from the film roll of the film supply unit 4 winds around the tube 13a and is formed into a cylindrical shape when passing through the gap between the tube 13a and the former 13b. The tube 13a and the former 13b can be replaced according to the size of the bag B to be manufactured.

(2-2) Pull-down belt mechanism 14
The pull-down belt mechanism 14 conveys the film F wound around the tube 13a downward while adsorbing the film F. The pull-down belt mechanism 14 mainly includes a driving roller 14a, a driven roller 14b, and a pair of belts 14c. The pair of belts 14c has a suction mechanism. The suction mechanism is arranged so as to sandwich the tube 13a on both the left and right sides of the tube 13a, and sucks the film F formed into a cylindrical shape. In the pull-down belt mechanism 14, the pair of belts 14c are rotationally driven by the driving roller 14a and the driven roller 14b, so that the film F formed into a cylindrical shape is conveyed downward.

(2-3) Vertical seal mechanism 15
The vertical sealing mechanism 15 seals the film F formed into a cylindrical shape in the vertical direction (vertical direction in FIG. 2). The vertical seal mechanism 15 is arranged on the front side of the tube 13a. The vertical seal mechanism 15 is moved in the front-rear direction by a drive mechanism (not shown) so as to approach the tube 13a or move away from the tube 13a.

When the vertical seal mechanism 15 is driven by the drive mechanism so as to approach the tube 13a, the vertically overlapping portion of the film F wound around the tube 13a is sandwiched between the vertical seal mechanism 15 and the tube 13a.

The vertical sealing mechanism 15 heats the overlapping portion of the film F while pressing the overlapping portion of the film F against the tube 13a at a constant pressure by a drive mechanism to heat-seal the overlapping portion of the film F in the vertical direction to form a tubular film Fc. ..

The vertical sealing mechanism 15 has a heater that heats the overlapping portion of the film F, a heater belt that comes into contact with the overlapping portion of the film F, and the like.

(2-4) Horizontal seal mechanism 17
The lateral sealing mechanism 17 seals the tubular film Fc in the lateral direction (in the front-rear direction in FIG. 2). The horizontal seal mechanism 17 is arranged below the molding mechanism 13, the pull-down belt mechanism 14, and the vertical seal mechanism 15.

FIG. 3 is a schematic side view of the lateral seal mechanism 17 as viewed from the right side of FIG. In FIG. 3, the direction perpendicular to the paper surface is the left-right direction in FIG. The lateral seal mechanism 17 mainly includes a first rotating body 50a and a second rotating body 50b.

The first rotating body 50a is arranged on the front side of the tubular film Fc. The second rotating body 50b is arranged behind the tubular film Fc.

The first rotating body 50a mainly includes a first rotating shaft 53a, a first seal jaw 51a, and a second seal jaw 52a. The second rotating body 50b mainly includes a second rotating shaft 53b, a first seal jaw 51b, and a second seal jaw 52b.

The first rotating body 50a rotates about the rotation center C1 of the first rotating shaft 53a with the first rotating shaft 53a as the rotating axis when viewed along the left-right direction. The second rotating body 50b rotates about the rotation center C2 of the second rotating shaft 53b with the second rotating shaft 53b as the rotating axis when viewed along the left-right direction.

When the lateral seal mechanism 17 is viewed along the left-right direction, the pair of first seal jaws 51a and 51b rotate synchronously in opposite directions, and the pair of second seal jaws 52a and 52b synchronize in opposite directions. Rotate.

In FIG. 3, the loci of the pair of first seal jaws 51a and 51b and the pair of second seal jaws 52a and 52b are shown by chain lines.

The lateral seal mechanism 17 has a pair of first seal jaws 51a and 51b or a pair of second seal jaws 52a and 52b in a lateral direction in which the tubular film Fc intersects the transport direction of the tubular film Fc (FIG. 2). Then, sandwich it along the front-back direction). The pair of first seal jaws 51a and 51b or the pair of second seal jaws 52a and 52b heat seal the tubular film Fc in the lateral direction by heating while sandwiching the tubular film Fc.

(3) Configuration of Film Supply Unit 4 FIG. 4 is a schematic side view of the film supply unit 4 when the printing device 123 of the bag making / packaging machine 1 according to the first embodiment is operating in the first printing mode. .. Further, FIG. 5 is a schematic side view of the film supply unit 4 when the printing device 123 of the bag making / packaging machine 1 according to the first embodiment is operating in the second printing mode. Within the paper surface of FIGS. 4 and 5, the sheet-shaped film F is conveyed from the right side (upstream side) to the left side (downstream side).

In FIGS. 4 and 5, the transport direction of the film F is indicated by an arrow. The film supply unit 4 feeds out the film F from the film roll FR, prints predetermined information on the surface of the film F, and supplies the film F to the molding mechanism 13 of the bag making / packaging unit 3.

The film supply unit 4 mainly includes an air shaft 21, a plurality of tension rollers 22, a printing device 123, an inspection device 24, and a first feed roller 25 and a second feed roller 26.

In the continuous transport mode, the film supply unit 4 continuously feeds the film F from the film roll FR. In the intermittent transfer mode, the film supply unit 4 intermittently feeds the film F from the film roll FR. The control unit 7 of the bag making and packaging machine 1 controls the film supply unit 4 according to the operation mode.

(3-1) Air shaft 21
The air shaft 21 is a shaft on which a film roll FR around which a sheet-shaped film F is wound is set. The air shaft 21 vacuum-sucks and fixes the film roll FR. The air shaft 21 is rotationally driven by a shaft drive motor (not shown). When the shaft drive motor rotates the air shaft 21, the sheet-shaped film F wound around the film roll FR is unwound.

The film F unwound from the film roll FR in the film supply unit 4 is finally sent to the bag making / packaging unit 3. In the bag-making and packaging unit 3, the film F is formed into a cylindrical shape by the forming mechanism 13 and is conveyed downward by the pull-down belt mechanism 14. As a result, in the film supply unit 4, the film F fed out from the film roll FR is conveyed by the amount fed out.

The control unit 7 can adjust the transport speed of the film F unwound from the film roll FR by controlling the shaft drive motor to change the rotation speed of the air shaft 21.

(3-2) Tension roller 22
The tension roller 22 is a roller that is arranged at a predetermined position at a predetermined distance interval. The tension roller 22 guides the film F to the printing device 123 while bending the film F unwound from the film roll FR and changing the transport angle.

The tension roller 22 applies an appropriate tension to the film F that is unwound and conveyed from the film roll FR, and prevents the film F that is conveyed from loosening and meandering. The number and position of the tension rollers 22 can be arbitrarily set according to the position of the film roll FR, the dimensions of the film F, and the like.

At least a part of the tension roller 22 may be movable in the vertical direction. By moving the tension roller 22, the tension applied to the film F guided by the tension roller 22 can be adjusted.

In this case, the control unit 7 detects the tension state of the film F based on the amount of displacement of the tension roller 22 in the vertical direction. Then, the control unit 7 controls the shaft drive motor to adjust the transport speed of the film F so that the tension applied to the film F is within a predetermined range based on the detected tension state.

(3-3) Printing device 123
The printing device 123 mainly includes a printing head 123a and a switching unit 123b. The print head 123a prints predetermined print information on the surface of the film F. The print information is printed in a predetermined printed area on the surface of the film F.

The printed information is, for example, when the packaged object C is a food product, the date of manufacture and the expiration date of the packaged object C. The print information is transmitted from the control unit 7 to the printing device 123.

(3-3-1) Print head 123a
The print head 123a can move along the direction of approaching the film F and away from the film F when printing the print information.

(3-3-2) Switching unit 123b
The switching unit 123b holds the platen roller 123c and the plastic template 123d. The platen roller 123c and the platen template 123d are members for receiving the film F. When the print head 123a prints print information on the surface of the film F, the print head 123a presses the film F toward the platen roller 123c or the plastic template 123d. The platen roller 123c and the platen template 123d are formed of an elastic member such as rubber.

In the present embodiment, the timing of printing on the film F is when the film F is being conveyed, the platen roller 123c is used, and the timing of printing on the film F is when the film F is stopped. In this case, the plastic template 123d is used.

The platen roller 123c or the plastic template 123d held by the switching unit 123b is arranged to face the print head 123a at a position where the film F is sandwiched together with the print head 123a.

The film F, which is unwound and conveyed from the film roll FR, passes between the print head 123a and the platen roller 123c or the plastic template 123d, and is sent to the bag making / packaging unit 3. The film F is sandwiched between the print head 123a and the platen roller 123c or the plastic template 23d while the print head 123a presses the film F against the platen roller 123c or the plastic template 123d.

In the switching unit 123b, the platen roller 123c and the print head 123a face each other in the first print mode, and the platen template 123d and the print head 123a face each other in the second print mode in the intermittent transfer mode. The state of the roller 23c and the plastic template 23d is switched.

Specifically, the switching unit 123b can switch between the first printing state and the second printing state.

The first printing state is, for example, as shown in FIG. 4, a state in which the platen roller 123c and the printing head 123a face each other with the film F in between, and is mainly in the first printing mode in the continuous transport mode. Will be adopted by.

The second print state is, for example, as shown in FIG. 5, a state in which the plastic template 123d and the print head 123a face each other with the film F in between, and is adopted in the second print mode in the intermittent transfer mode. NS.

In the present embodiment, the operator of the bag-making / packaging machine 1 can switch between the first printing state and the second printing state by operating the switching unit 123b when switching the operation mode of the bag-making / packaging machine 1. can.

As shown in FIGS. 4 and 5, the switching unit 123b holds both the platen roller 123c and the plastic template 123d in advance. In the switching portion 123b, the portion where the platen roller 123c is held and the portion where the plastic template 123d is held are connected to each other.

The switching unit 123b can be rotated around the point P1 along the arrows R1 and R2. As a result, the switching unit 123b can integrally move the platen roller 123c and the plastic template 123d along the film F.

(3-3-3) Switching motor 123m
The switching motor 123m can rotate the switching unit 123b. Specifically, the rotation shaft of the switching motor 123m is connected to the point P, and the switching portion 123b rotates around the point P1 according to the amount of rotation of the rotation shaft.

In the first printing state (first printing mode) of FIG. 4, the rotation axis of the switching motor 123m rotates in the direction of arrow R1 by the first angle, so that the switching portion 123b rotates in the direction of arrow R1. The mode shifts to the second printing state (second printing mode).

Further, in the second printing state (second printing mode) of FIG. 5, the rotation axis of the switching motor 123m rotates in the direction of arrow R2 by the first angle, so that the switching portion 123b rotates in the direction of arrow R2. The mode shifts to the first printing state (first printing mode) of 4.

In the present embodiment, the servomotor is adopted as the switching motor 123m, but the switching motor 123m is not limited to the servomotor, and other motors, for example, a stepping motor may be adopted.

(3-4) Inspection device 24
The inspection device 24 is installed near the downstream side of the printing device 123. The inspection device 24 inspects whether or not the print information is accurately printed in the printed area of the film F. The inspection device 24 is an optical sensor composed of a light emitting element and a light receiving element.

The conveyed film F passes between the light emitting element and the light receiving element. The light emitting element irradiates the printed area of the film F with light. The light receiving element detects the light reflected in the area to be printed and detects the position of the print information printed in the area to be printed.

The inspection device 24 may be an optical camera. In this case, the inspection device 24 inspects whether or not the print information is accurately printed in the printable area by capturing the image to be printed on the conveyed film F and analyzing the acquired image.

(3-5) First feed roller 25 and second feed roller 26
The first feed roller 25 and the second feed roller 26 are rollers for guiding the film F conveyed in the film supply unit 4 in a predetermined direction.

The first feed roller 25 is arranged between the tension roller 22 and the printing device 123 in the path through which the film F is conveyed, and guides the film F in the direction in which the printing device 123 is located.

The first feed roller 25 guides the film F between the print head 123a and the platen roller 23c or the plastic template 23d.

The second feed roller 26 is arranged between the printing device 123 and the inspection device 24 in the path through which the film F is conveyed, and guides the film F in the direction in which the inspection device 24 is located.

As shown in FIGS. 4 and 5, the positions of the first feed roller 25 and the second feed roller 26 in the first print mode are the positions of the first feed roller 25 and the second feed roller 26 in the second print mode. different.

The positions of the first feed roller 25 and the second feed roller 26 are controlled by a drive mechanism (not shown) such as an air cylinder. The control unit 7 automatically switches the positions of the first feed roller 25 and the second feed roller 26 according to the operation mode.

The number and position of the first feed roller 25 and the second feed roller 26 can be arbitrarily set according to the configuration of the film supply unit 4 and the like. The film supply unit 4 may not include the first feed roller 25 and the second feed roller 26 depending on its configuration.

(4) Configuration of Control Unit 7 FIG. 6 is a block diagram of the control unit 7. In FIG. 6, the control unit 7 is composed of a CPU 71, a ROM 72 connected to the CPU 71, a RAM 73, and the like. The control unit 7 is connected to the combination measuring unit 2, the bag making and packaging unit 3, the film supply unit 4, the operation switch 5, and the liquid crystal display 6.

Based on the inputs from the operation switch 5 and the liquid crystal display 6, the control unit 7 includes the combination measuring unit 2, the pull-down belt mechanism 14 of the bag making and packaging unit 3, the vertical sealing mechanism 15, the horizontal sealing mechanism 17, and the film supply unit 4. Is controlled, and various information is output to the liquid crystal display 6.

(5) Operation of the bag-making / packaging machine (5-1) Overall operation An outline of the operation of the bag-making / packaging machine 1 sealing the object to be packaged C in the bag B with reference to FIGS. 1, 2 and 3. Will be described. The film F supplied from the film supply unit 4 to the bag making / packaging unit 3 is wound around the tube 13a to be formed into a cylindrical shape, and is conveyed downward by the pull-down belt mechanism 14.

The tubular film F wound around the tube 13a has both ends extending in the vertical direction overlapped with each other. The overlapping portion of the tubular film F is vertically sealed by the vertical sealing mechanism 15 to form the tubular film Fc.

The vertically sealed tubular film Fc comes out of the tube 13a and is conveyed downward to the horizontal sealing mechanism 17. The lateral seal mechanism 17 sandwiches the tubular film Fc with a pair of first seal jaws 51a and 51b or a pair of second seal jaws 52a and 52b for lateral sealing. At this time, a bag B in which the object to be packaged C is enclosed is formed below the laterally sealed portion of the tubular film Fc.

On the other hand, above the laterally sealed portion of the tubular film Fc, the object to be packaged C measured by the combination measuring unit 2 falls in the tube 13a and is thrown into the tubular film Fc.

Further, a portion of the tubular film Fc that is laterally sealed by a cutter (not shown) built in the first seal jaw 51a or the second seal jaw 52a according to the timing at which the tubular film Fc is laterally sealed. Is cut laterally. As a result, the bag B in which the object to be packaged C is enclosed is separated from the subsequent tubular film Fc.

As described above, the bag B in which the object to be packaged C is enclosed is continuously manufactured. The manufactured bag B is then transferred to a device such as a thickness checker and a weight checker by a belt conveyor (not shown) or the like.

The bag-making and packaging machine 1 of the present embodiment operates in one of the continuous transport mode and the intermittent transport mode.

In the continuous transport mode, the lateral seal mechanism 17 laterally seals the tubular film Fc being transported while the lateral seal mechanism 17 moves downward in accordance with the downward transport of the tubular film Fc.

In the intermittent transport mode, the lateral sealing mechanism 17 laterally seals the stopped tubular film Fc at a timing when the transport of the tubular film Fc is temporarily stopped.

The bag-making and packaging machine 1 is configured so that the operation mode can be selected from either a continuous transfer mode or an intermittent transfer mode, and the operator of the bag-making and packaging machine 1 is appropriate depending on the situation. Operation mode can be selected.

(5-2) Operation of Film Supply Unit 4 (5-2-1) Switching of Print Mode FIG. 7 is a flowchart of print mode switching control performed before the operation of the film supply unit 4. Hereinafter, each step will be described with reference to FIG. 7.

(Step S1)
The control unit 7 confirms the pre-input information in step S1. The pre-input information is information input by the operator via the operation switch 5 and the liquid crystal display 6 before the start of operation of the bag making / packaging machine 1.

(Step S2)
Next, in step S2, the control unit 7 determines whether or not the information necessary for selecting the print mode is input in the pre-input information. Here, the necessary information is the print position, the length of the bag, and the operation mode.

When the control unit 7 determines that the necessary information has been input, the control unit 7 proceeds to step S3. On the other hand, when the control unit 7 determines that the necessary information has not been input, the process proceeds to step S2a, and the liquid crystal display 6 displays an "input request" indicating that the necessary information is not included in the pre-input information. , Prompt to enter necessary information.

(Step S3)
Next, the control unit 7 determines the print timing in step S3. The print timing determines whether to print when the film F is being conveyed or when the film F is stopped.

When the control unit 7 recognizes that the operation mode is the continuous transfer mode from the necessary information acquired in step S2, the control unit 7 determines that printing is performed while the film F is being conveyed.

Further, the control unit 7 determines the print timing based on the print position when the operation mode is the intermittent transfer mode from the necessary information acquired in step S2. Generally, when the operation mode is the intermittent transfer mode, printing is performed when the film F is stopped.

However, even in the intermittent transfer mode, it may be determined that printing is performed when the film F is conveyed due to the relationship between the printing position and the length of the bag.

(Step S4)
Next, in step S4, the control unit 7 determines whether the printing timing is when the film F is being conveyed or when the film F is stopped, and when it is determined that the printing timing is when the film F is being conveyed, the step is taken. The process proceeds to S5, and when it is determined that the printing timing is when the film F is stopped, the process proceeds to step S6.

(Step S5)
Next, since the control unit 7 has determined that the printing timing is when the film F is being conveyed, the control unit 7 switches the printing mode to the first printing mode in step S5. Specifically, the control unit 7 rotates the switching motor 123m of the switching unit 123b to bring the platen roller 123c and the print head 123a into the first printing state facing each other with the film F in between, as shown in FIG. do.

(Step S6)
On the other hand, when the control unit 7 determines that the print timing is when the film F is stopped, the control unit 7 switches the print mode to the second print mode in step S6. Specifically, the control unit 7 rotates the switching motor 123m of the switching unit 123b so that the plastic template 123d and the print head 123a face each other with the film F in between, as shown in FIG. do.

As described above, since the print mode is automatically switched based on the print timing in advance, it is possible to prevent a mistake in selecting the print mode.

(5-2-2) Operation after switching the printing mode The film supply unit 4 feeds out and conveys the film F from the film roll FR fixed to the air shaft 21 and supplies the film F to the molding mechanism 13 of the bag making / packaging unit 3. .. First, the film supply unit 4 conveys the film F unwound from the film roll FR while guiding it with the tension roller 22.

Next, the film supply unit 4 guides the film F toward the printing device 123 by the first feed roller 25. Next, the film supply unit 4 prints print information on the area to be printed on the film F by the printing device 123.

Next, the film supply unit 4 guides the film F toward the inspection device 24 by the second feed roller 26.

Next, the film supply unit 4 inspects whether or not the print information is accurately printed in the printed area of the film F by the inspection device 24.

Next, the film supply unit 4 sends the film F to the molding mechanism 13 of the bag making / packaging unit 3.

In the first printing mode, the film F is conveyed while the printing apparatus 123 is printing on the area to be printed on the film F, and the print head 123a is not moved along the conveying direction of the film F.

On the other hand, in the second printing mode, while the printing device 123 is printing on the area to be printed on the film F, the transfer of the film F is stopped, and the print head 123a moves along the transfer direction of the film F. doing.

In this way, the print information is printed in the printed area of the film F by moving the print head 123a relative to the film F in the transport direction of the film F.

(6) Features (6-1)
In the bag making / packaging machine 1, when the control unit 7 determines that the timing for printing on the film F is when the film F is being conveyed based on the pre-input information, the printing mode is set to the first printing mode. Switch. Further, when the control unit 7 determines that the timing of printing on the film F is when the film F is stopped based on the pre-input information, the control unit 7 switches the print mode to the second print mode.

Since the print mode is determined by the timing of printing on the packaging material regardless of whether the bag is made continuously or intermittently, the operator does not need to be aware of which print mode to operate. A print mode suitable for production is selected, which also helps prevent erroneous operation.

(6-2)
The pre-input information includes the print position of the film F and the length of the bag. The printing position of the film F and the length of the bag are information to be input to the bag making / packaging machine 1 before production, and a situation where the film F is not input is unlikely to occur, and the information necessary for switching the printing mode can be surely obtained.

(6-3)
The control unit 7 has a continuous transport mode and an intermittent transport mode as selectable transport modes for transporting the film F. The continuous transfer mode is a mode in which the film F is continuously conveyed. The intermittent transfer mode is a mode in which the film F is intermittently conveyed. The pre-input information also includes the selection result of the transport mode.

(6-4)
When the control unit 7 determines that the transfer mode is the intermittent transfer mode and the timing for printing on the film F is when the film F is being conveyed, the control unit 7 switches the print mode to the first print mode. Even in the intermittent transfer mode, the print mode is switched depending on whether the print timing is when the film F is conveyed or when the film F is stopped, so that a print mode suitable for production is selected.

<Second Embodiment>
The bag-making and packaging machine 1 according to the second embodiment of the present invention will be described focusing on the differences from the bag-making and packaging machine 1 according to the first embodiment. The bag-making and packaging machine 1 of the second embodiment includes a printing device 223. The components other than the printing device 223 are the same as those in the first embodiment.

FIG. 8 is a schematic side view of the film supply unit 4 when the printing device 223 of the bag making / packaging machine 1 according to the second embodiment is operating in the first printing mode. Further, FIG. 9 is a schematic side view of the film supply unit 4 when the printing device 223 of the bag making / packaging machine 1 according to the second embodiment is operating in the second printing mode.

(1) Printing device 223
The printing device 223 mainly includes a printing head 223a and a switching unit 223b. The print head 223a prints predetermined print information on the surface of the film F. The print information is printed in a predetermined printed area on the surface of the film F.

The printed information is, for example, when the packaged object C is a food product, the date of manufacture and the expiration date of the packaged object C. The print information is transmitted from the control unit 7 to the printing device 223.

(1-1) Print head 223a
The print head 223a can move along the direction of approaching the film F and away from the film F when printing the print information.

(1-2) Switching unit 223b
In the second embodiment, the platen roller 223c and the platen template 223d are held at both ends of the switching portion 223b, respectively.

The switching unit 223b changes the position where the platen roller 223c and the plastic template 223d are held according to the operation mode of the bag making / packaging machine 1.

In the first print mode of FIG. 8, the platen roller 223c is held at a position facing the print head 223a, and the plastic template 223d is held at a position away from the print head 223a.

In the second print mode of FIG. 9, the plastic template 223d is held at a position facing the print head 223a, and the platen roller 223c is held at a position away from the print head 223a.

(1-3) Switching motor 223m
The switching motor 223m can rotate the switching unit 223b. Specifically, the rotation shaft of the switching motor 223m is connected to the point P2, and the switching portion 223b rotates around the point P2 according to the amount of rotation of the rotation shaft.

In the first printing state (first printing mode) of FIG. 8, the rotation axis of the switching motor 223m is rotated by the second angle in the direction of arrow R1, so that the switching portion 223b is rotated in the direction of arrow R1. The mode shifts to the second printing state (second printing mode).

Further, in the second printing state (second printing mode) of FIG. 9, the rotation axis of the switching motor 223m is rotated by the second angle in the direction of arrow R2, so that the switching portion 223b is rotated in the direction of arrow R2. It shifts to the first printing state (first printing mode) of 8.

In the present embodiment, the servomotor is adopted as the switching motor 223m, but the switching motor 223m is not limited to the servomotor, and other motors, for example, a stepping motor may be adopted.

The operator of the bag making and packaging machine 1 can switch the positions where the platen rollers 223c and the plastic template 223d are held without touching the platen rollers 223c and the plastic template 223d.

Since "switching the print mode" and "operation after switching the print mode" are the same as those in the first embodiment, the description thereof will be omitted here.

<Third Embodiment>
The bag-making and packaging machine 1 according to the third embodiment of the present invention will be described focusing on the differences from the bag-making and packaging machine 1 according to the first embodiment. The bag-making / packaging machine 1 of the third embodiment includes a printing device 323. The components other than the printing device 323 are the same as those in the first embodiment.

FIG. 10 is a schematic side view of the film supply unit 4 when the printing device 323 of the bag making / packaging machine 1 according to the third embodiment is operating in the first printing mode. Further, FIG. 11 is a schematic side view of the film supply unit 4 when the printing device 323 of the bag making / packaging machine 1 according to the third embodiment is operating in the second printing mode.

(1) Printing device 323
The printing device 323 mainly includes a printing head 323a and a switching unit 323b. The print head 323a prints predetermined print information on the surface of the film F. The print information is printed in a predetermined printed area on the surface of the film F.

The printed information is, for example, when the packaged object C is a food product, the date of manufacture and the expiration date of the packaged object C. The print information is transmitted from the control unit 7 to the printing device 223.

(1-1) Print head 323a
The print head 323a can move along the direction of approaching the film F and away from the film F when printing the print information.

(1-2) Switching unit 323b
In the first embodiment and the second embodiment, the switching unit 323b switches between the first printing state and the second printing state by rotating the platen roller 323c and the plastic template 323d. However, in the third embodiment, the print head 323a is moved to switch between the first print state and the second print state.

As shown in FIGS. 10 and 11, the positions of the platen roller 323c and the platen template 323d are fixed. The print head 323a can move between the position of the print head 323a in the first print mode shown in FIG. 10 and the position of the print head 323a in the second print mode shown in FIG.

(1-3) Switching motor 323m
The switching motor 323m can move the print head 323a. Specifically, the rotation shaft of the switching motor 323m is connected to the point P3, and the print head 323a rotates around the point P3 according to the amount of rotation of the rotation shaft.

In the first printing state (first printing mode) of FIG. 10, the rotation axis of the switching motor 323m rotates in the direction of arrow R2 by a third angle, so that the print head 323a rotates in the direction of arrow R2, and FIG. The mode shifts to the second printing state (second printing mode).

Further, in the second printing state (second printing mode) of FIG. 11, the rotation axis of the switching motor 323m rotates in the direction of arrow R1 by a third angle, so that the print head 323a rotates in the direction of arrow R1. The mode shifts to the first printing state (first printing mode) of 10.

In the present embodiment, the servomotor is adopted as the switching motor 323m, but the switching motor 323m is not limited to the servomotor, and other motors, for example, a stepping motor may be adopted.

Since "switching the print mode" and "operation after switching the print mode" are the same as those in the first embodiment, the description thereof will be omitted here.

<Fourth embodiment (manual switching)>
Even if a bag-making and packaging machine that can switch between the platen used in the continuous bag-making and packaging machine and the platen used in the intermittent bag-making and packaging machine for one printing device is realized, due to human error, If the print state is the second print state even though the input for switching the print mode to the first print mode is made, the print state is changed even though the input for switching the print mode to the second print mode is made. If it is in the first printing state, a printing defect is caused.

Therefore, in the first embodiment, the second embodiment, and the third embodiment, the switching motor rotates the platen roller and the plastic template in conjunction with the switching of the print mode, so that the platen roller and the plastic template are automatically switched in the first print mode. In order to switch to the first print state and automatically switch to the second print state in the second print mode, the above-mentioned human error was avoided.

On the other hand, if the protection against human error as described above can be ensured, the operator can move the platen roller and the plastic template instead of the switching motor.

Hereinafter, a bag making / packaging machine for manually switching between a platen roller and a plastic template will be described.

The bag-making and packaging machine 1 according to the fourth embodiment of the present invention will be described focusing on the differences from the bag-making and packaging machine 1 according to the first embodiment. The bag-making / packaging machine 1 of the fourth embodiment includes a printing device 423 and an instruction unit 8 that instructs the control unit 7 to switch the printing mode. It is the same as the first embodiment except that the printing device 423 and the indicator 8 are provided and the switching motor is abolished.

FIG. 12 is a schematic side view of the film supply unit 4 when the printing device 423 of the bag making / packaging machine 1 according to the fourth embodiment is operating in the first printing mode. Further, FIG. 13 is a schematic side view of the film supply unit 4 when the printing device 423 of the bag making / packaging machine 1 according to the fourth embodiment is operating in the second printing mode.

(1) Printing device 423
The printing device 423 mainly includes a printing head 423a and a switching unit 423b. The print head 423a prints predetermined print information on the surface of the film F. The print information is printed in a predetermined printed area on the surface of the film F.

The printed information is, for example, when the packaged object C is a food product, the date of manufacture and the expiration date of the packaged object C. The print information is transmitted from the control unit to the printing device 423.

(1-1) Print head 423a
The print head 23a can move along the direction of approaching the film F and away from the film F when printing the print information.

(1-2) Switching unit 423b
The switching unit 423b holds the platen roller 423c or the plastic template 423d. In FIG. 12, the switching unit 423b can hold the platen roller 423c. In FIG. 13, the switching unit 423b can hold the plastic template 423d.

The platen roller 423c and the platen template 423d are members for receiving the film F. When the print head 423a prints print information on the surface of the film F, the print head 423a presses the film F toward the platen roller 423c or the plastic template 423d. The platen roller 423c and the platen template 423d are formed of an elastic member such as rubber.

In the fourth embodiment, the platen roller 423c is used in the first print mode, and the plastic template 423d is used in the second print mode.

The platen roller 423c or the plastic template 423d held by the switching portion 423b is arranged to face the print head 423a at a position where the film F is sandwiched together with the print head 423a.

The film F, which is unwound and conveyed from the film roll FR, passes between the print head 423a and the platen roller 423c or the plastic template 423d, and is sent to the bag making and packaging unit 3. The film F is sandwiched between the print head 423a and the platen roller 423c or the plastic template 423d while the print head 423a presses the film F against the platen roller 423c or the plastic template 423d.

The switching unit 423b holds the platen roller 423c so that the platen roller 423c and the print head 423a face each other in the first print mode. In the second print mode, the plastic template 423d is held so that the plastic template 423d and the print head 423a face each other.

(2) Indicator 8
The indicator 8 specifies the print mode. As the form of the indicator unit 8, the indicator unit 8 may be a switch for selecting a print mode. Alternatively, the indicator 8 may be selected via a liquid crystal display.

When the control unit 7 determines that the timing for printing on the film F is when the film F is being conveyed based on the pre-input information and the instruction from the instruction unit 8, the control unit 7 sets the print mode to the first print mode. The instruction to switch to is given via the liquid crystal display 6.

When the control unit 7 determines that the timing for printing on the film F is when the film F is stopped, the control unit 7 gives an instruction to switch the print mode to the second print mode via the liquid crystal display.

The operator switches the print mode to the mode displayed on the liquid crystal display 6, that is, the first print mode or the second print mode.

If the print mode selected by the control unit 7 from the pre-input information does not match the print mode specified by the instruction unit 8, the control unit 7 issues a warning via the liquid crystal display 6 to prompt the user to review the print mode.

Further, the operator replaces the platen roller 423c or the plastic template 423d held in the switching unit 423b according to the print mode displayed on the liquid crystal display 6.

For example, when the operator of the bag making / packaging machine 1 is instructed to perform the first printing mode, the operator removes the plastic template 423d from the switching portion 423b and attaches the platen roller 423c to the switching portion 423b to put the platen roller 423c into the first printing state. ..

Further, when the operator of the bag making / packaging machine 1 is instructed to perform the second printing mode, the platen roller 423c is removed from the switching portion 423b, and the plastic template 423d is attached to the switching portion 423b to bring it into the second printing state. ..

However, the control unit 7 is configured so that the first signal is input when the print state is the first print state, and the second signal is input when the print state is the second print state.

Therefore, when the print mode and the print state do not match, the control unit 7 issues a warning via the liquid crystal display 6 to prompt the user to review the print state.

(3) Operation of the film supply unit 4 The film supply unit 4 feeds and conveys the film F from the film roll FR fixed to the air shaft 21 and supplies the film F to the molding mechanism 13 of the bag making / packaging unit 3. First, the film supply unit 4 conveys the film F unwound from the film roll FR while guiding it with the tension roller 22.

Next, the film supply unit 4 guides the film F in the direction of the printing device 423 by the first feed roller 25. Next, the film supply unit 4 prints print information on the printed area of the film F by the printing device 423.

Next, the film supply unit 4 guides the film F toward the inspection device 24 by the second feed roller 26.

Next, the film supply unit 4 inspects whether or not the print information is accurately printed in the printed area of the film F by the inspection device 24.

Next, the film supply unit 4 sends the film F to the molding mechanism 13 of the bag making / packaging unit 3.

In the first printing mode, the film F is being conveyed while the printing apparatus 423 is printing on the area to be printed on the film F, and the print head 423a is not moving along the conveying direction of the film F.

On the other hand, in the second printing mode, while the printing device 423 is printing on the area to be printed on the film F, the transfer of the film F is stopped, and the print head 423a moves along the transfer direction of the film F. doing.

In this way, the print information is printed in the printed area of the film F by moving the print head 423a relative to the film F in the transport direction of the film F.

<Fifth Embodiment>
The bag-making and packaging machine 1 according to the fifth embodiment of the present invention will be described focusing on the differences from the bag-making and packaging machine 1 according to the fourth embodiment. The bag-making and packaging machine 1 of the fifth embodiment includes a printing device 523. The components other than the printing device 523 are the same as those in the first embodiment.

FIG. 14 is a schematic side view of the film supply unit 4 when the printing device 523 of the bag making / packaging machine 1 according to the fifth embodiment is operating in the first printing mode. Further, FIG. 15 is a schematic side view of the film supply unit 4 when the printing device 523 of the bag making / packaging machine 1 according to the fifth embodiment is operating in the second printing mode.

(1) Printing device 523
The printing device 523 mainly includes a printing head 523a and a switching unit 523b. The print head 523a prints predetermined print information on the surface of the film F. The print information is printed in a predetermined printed area on the surface of the film F.

The printed information is, for example, when the packaged object C is a food product, the date of manufacture and the expiration date of the packaged object C. The print information is transmitted from the control unit to the printing device 423.

(1-1) Print head 523a
The print head 523a can move along the direction of approaching the film F and away from the film F when printing the print information.

(1-2) Switching unit 523b
The switching section 523b shown in FIGS. 14 and 15 holds both the platen roller 523c and the plastic template 523d in advance. In the switching portion 523b, the portion where the platen roller 523c is held and the portion where the plastic template 523d is held are not connected and are independent of each other.

Therefore, the operator of the bag making / packaging machine 1 can move the platen roller 523c and the plastic template 523d separately by moving only a part of the switching portion 523b.

In the paper surface of FIGS. 14 and 15, the portion where the platen roller 523c is held and the portion where the platen template 523d is held can be moved independently of each other. Further, the switching unit 523b can move the platen roller 523c and the plastic template 523d along the film F.

In the first print mode of FIG. 14, the operator separates the platen roller 523c from the print head 523a and brings the plastic template 523d closer to the print head 523a.

In the second print mode of FIG. 15, the operator separates the plastic template 523d from the print head 523a and brings the platen roller 523c closer to the print head 523a.

The operator can switch between the first printing state and the second printing state by moving the switching unit 523b.

1 Bag making and packaging machine 7 Control unit 8 Indicator 123 Printing device (printing unit)
223 Printing device (printing unit)
323 Printing device (printing unit)
423 Printing device (printing unit)
523 Printing device (printing unit)

Japanese Unexamined Patent Publication No. 2012-136270

Claims (5)

A bag-making and packaging machine that forms a cylinder while transporting a packaging material, and puts an article into the cylindrical packaging material to wrap it.
A printing unit that prints on the packaging material and
A control unit that controls the operation of the printing unit based on predetermined information input in advance, and a control unit.
With
The printing unit serves as a selectable printing mode for printing on the packaging material.
The first printing mode for printing on the transported packaging material and
A second printing mode that prints on the stopped packaging material, and
Have,
The control unit is based on the predetermined information.
When it is determined that the timing for printing on the packaging material is when the packaging material is being conveyed, the printing mode is switched to the first printing mode.
When it is determined that the timing of printing on the packaging material is when the packaging material is stopped, the printing mode is switched to the second printing mode.
Bag making and packaging machine. A bag-making and packaging machine that forms a cylinder while transporting a packaging material, and puts an article into the cylindrical packaging material to wrap it.
A printing unit having a plurality of selectable printing modes for printing on the packaging material, and
A control unit that controls the operation of the printing unit,
An instruction unit that instructs the control unit to switch the print mode,
With
In the print mode,
The first printing mode for printing on the transported packaging material and
A second printing mode that prints on the stopped packaging material, and
Is included,
The control unit is based on predetermined information input in advance and instructions from the instruction unit.
When it is determined that the timing of printing on the packaging material is when the packaging material is being conveyed, an instruction is given to switch the printing mode to the first printing mode.
When it is determined that the timing of printing on the packaging material is when the packaging material is stopped, an instruction is given to switch the printing mode to the second printing mode.
Bag making and packaging machine. The predetermined information includes the printing position of the packaging material and the length of the bag.
The bag-making and packaging machine according to claim 1 or 2. The control unit serves as a selectable transport mode for transporting the packaging material.
In the first transport mode in which the packaging material is continuously transported,
A second transport mode in which the packaging material is intermittently transported, and
Have,
The predetermined information includes the selection result of the transport mode.
The bag-making and packaging machine according to any one of claims 1 to 3. When the control unit determines that the transport mode is the second transport mode and the timing of printing on the packaging material is when the packaging material is being transported, the printing mode is set to the printing mode. Switch to the first print mode,
The bag-making and packaging machine according to claim 4.

Images