JP2010083563A - Bag-making and wrapping machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bag-making and wrapping machine which can securely bend the bottom of bags through a continuous movement. <P>SOLUTION: The bag-making and wrapping machine 3 includes a transporting section 6, a side sealing mechanism 17, and a bottom heating means 21. The transporting section 6 continuously transports tubular wrapping materials. The side sealing mechanism 17 seals the tubular wrapping materials in a horizontal direction and detaches bags formed by sealing from the wrapping materials that follow. The bottom heating means 21 is positioned below the side sealing mechanism 17. The bottom heating means 21 is set to abut against the bottom of the bags detached with the side sealing mechanism 17 and falling from the wrapping materials, and heats the bottom of the bags. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a bag making and packaging machine that performs bag making by laterally sealing a cylindrical packaging material.

  2. Description of the Related Art In recent years, a bag making and packaging machine has existed as a device for filling a bag with a packaged article such as a confectionery while manufacturing the bag while making the bag.

  Here, in the packaging industry, various forms of bags that are aesthetically pleasing to motivate purchases have been proposed. For example, forms such as pillows and square bottom gussets have been put into practical use.

For example, when manufacturing an upright square bottom gusset bag having a flat bottom, in the packaging machine described in Patent Document 1, first, a cylindrical packaging material is sealed in the lateral direction to form a pillow bag. After forming, the conveyance of the bag is temporarily stopped in a state where it is connected to the cylindrical packaging material, and the L-shaped folding member is pressed against the laterally sealed portion of the bag bottom that is softened by the residual heat immediately after the sealing. The side seal part is affixed to the bottom of the bag.
Japanese Patent No. 3791741

  However, in the above conventional bag making and packaging machine, when forming the flat bottom of a square-bottom gusset-shaped bag, it is necessary to temporarily stop the bag and press the folding member against the lateral seal portion. I have to take bag action.

  Accordingly, it is difficult to improve the production speed while maintaining a certain degree of aesthetics in the production of a bag having a square bottom gusset shape.

  An object of the present invention is to provide a bag making and packaging machine capable of surely folding a bottom of a bag by a continuous operation.

  The bag making and packaging machine according to the present invention includes a transport unit, a lateral seal mechanism, and a bottom heating unit. A conveyance part conveys a cylindrical packaging material continuously. The horizontal sealing mechanism seals the cylindrical packaging material in the lateral direction and separates the bag formed by the seal from the subsequent packaging material. The bottom heating means is disposed below the lateral seal mechanism. The bottom portion heating means abuts against the bottom portion of the bag that is separated from the packaging material by the lateral seal mechanism and drops, and heats the bottom portion of the bag.

  Here, the bag is provided with a bottom heating means that is disposed below the horizontal sealing mechanism, abuts against the bottom of the bag that is separated from the tubular packaging material by the horizontal sealing mechanism and drops, and heats the bottom of the bag. The horizontal seal portion on the lower side of the bottom can be easily and quickly thermocompression bonded to the bottom of the bag. As a result, the cost reduction of the bag making and packaging machine by diverting the existing packaging machine, the speed of the bag making operation, the simplification of the mechanism of the bag making and packaging machine, and the space saving of the bag making and packaging machine can be achieved. .

  Further, the apparatus further includes guide means arranged below the horizontal seal mechanism and guiding the bag, which is separated from the packaging material by the horizontal seal mechanism and dropped, onto the bottom heating means in a state where the bag is almost upright. Is preferred.

  Here, the falling bag B can be reliably dropped in an upright state while being guided by the guiding means.

  The guide means preferably includes a pair of side guide plates for guiding the bag along both sides of the falling bag and a back guide plate for guiding the bag along the back side of the falling bag. .

  Here, the falling bag can be reliably dropped in an upright state while being guided from both side surfaces and the back surface. Moreover, since the front side of the guide means is open, the bottom of the bag can be quickly conveyed by the conveying means after thermocompression bonding.

  Further, it is preferable that the rear guide plate is inclined rearward with respect to a direction extending vertically upward from the bottom heating means.

  Here, since the rear guide plate is inclined rearward with respect to the direction extending vertically upward from the bottom heating means, posture control of the falling bag (especially prevention of forward tilting) is possible.

  Moreover, it is preferable to further include posture control means for controlling the posture of the falling bag by applying an external force to the falling bag.

  Here, the posture of the falling bag can be controlled by applying an external force to the falling bag by the posture control means.

  Moreover, it is preferable that the attitude control means is an air injection means for controlling the attitude of the falling bag by injecting air from the front or upper front to the falling bag.

  Here, since the posture of the falling bag is controlled by injecting air from the front or front and upper direction to the falling bag by the air injection means, it is possible to prevent the front bag from falling forward and to ensure a reliable bottom by the injection from the front and upper side. A folding effect is possible.

  Further, the lateral seal mechanism has a pair of seal jaws that are thermocompression-bonded and cut by sandwiching a cylindrical packaging material from the lateral direction, and one of the pair of seal jaws protrudes in a dogleg shape. It is preferable that the other sealing jaw has a concave shape in a V shape.

  Here, one seal jaw of the pair of seal jaws has a shape that protrudes in a U-shape, and the other seal jaw has a shape that is recessed in a U-shape, so at the bottom of the bag It is possible to easily fold the horizontal seal portion, and the bottom fold can be realized quickly and reliably by continuous operation.

  In addition, one of the pair of seal jaws has a shape protruding in a dogleg shape so as to extend in a direction inclined by 110 to 120 degrees from the upper end surface or the lower end surface, and the other seal It is preferable that the jaw has a concave shape in the shape of a dog so as to extend in a direction inclined by 60 to 70 degrees from the upper end face or the lower end face, respectively.

  Here, one seal jaw protrudes in a U-shape so as to extend in a direction inclined by 110 to 120 degrees, and the other seal jaw extends so as to extend in a direction inclined by 60 to 70 degrees. Since it is recessed in the shape of a letter, the lower side seal portion can be bent to an optimum angle at which the bag can be quickly and reliably thermocompressed when the bag is dropped. As a result, a clean bottom fold can be realized more quickly and reliably.

  According to the bag making and packaging machine of the present invention, in the bag making and packaging machine that performs the bag making process while continuously conveying the packaging material, the bag making and packaging machine includes the bottom heating means for heating the bottom of the falling bag. Can be thermocompression bonded easily and quickly to the bottom of the bag. As a result, it is possible to reduce the cost by diverting the existing packaging machine, speed up the bag making operation, simplify the mechanism of the bag making and packaging machine, and save the space of the bag making and packaging machine.

  A combination weighing system 10 equipped with a bag making and packaging machine 3 according to an embodiment of the present invention will be described below with reference to FIGS.

  In the following description, “upstream side” and “downstream side” mean directions based on the direction in which the film F is conveyed.

[Configuration of the entire combination weighing system 10]
As shown in FIG. 1, the combination weighing system 10 according to the present embodiment measures a product C (see FIG. 2) such as confectionery to be packaged, covers the measured product C with a film, An apparatus for bagging the product C by sealing a cylindrical film vertically and horizontally, and mainly includes a combination weighing device 2 and a bag making and packaging machine 3.

  The product C is weighed by a predetermined weight and stored in each hopper in the combination weighing device 2 provided above the bag making and packaging machine 3, and is discharged to a predetermined total weight by counting the number of times. The

  As shown in FIG. 1, the combination weighing device 2 is arranged on an upper portion of a bag making and packaging machine 3 to be described later. After weighing a product C by a predetermined weight in a weighing hopper, these measured values are set to a predetermined total weight. In combination, the products are sequentially discharged and the product C having a predetermined total weight is measured.

  The bag making and packaging machine 3 is a device that packs the product C discharged by a predetermined total weight as a result of the count measurement in the combination weighing device 2 using the film F that is continuously conveyed. The bag making and packaging machine 3 will be described in detail later.

[Bag making and packaging machine 3]
As shown in FIG. 1, the bag making and packaging machine 3 is configured to include a bag making and packaging unit 5 and a film supply unit 6 that supplies a film F serving as a bag to the bag making and packaging unit 5. ing.

  The film supply unit 6 is a unit that supplies the sheet-like film F to the forming mechanism 13 (see FIG. 2) of the bag making and packaging unit 5, and is provided adjacent to the bag making and packaging unit 5. In addition, the film supply unit 6 is corresponded to the conveyance part which conveys the cylindrical packaging material of this invention continuously.

  As shown in FIGS. 1 to 3, the bag making and packaging unit 5 includes a forming mechanism 13 that forms a film F that is fed in a sheet shape into a rectangular tube shape, and a film F that has a rectangular tube shape (hereinafter referred to as a square tube). By pulling down the belt film mechanism 14 that continuously conveys the tubular film Fm), the vertical sealing mechanism 15 that vertically seals the overlapping portion of the rectangular tubular film Fm, and the horizontal sealing of the rectangular tubular film Fm. It has a horizontal sealing mechanism 17 that seals the upper and lower ends of the bag B, a gusset forming mechanism 18, and a bottom heating mechanism 21.

  As shown in FIG. 2, the forming mechanism 13 includes a tube 13b and a former 13a. The tube 13b is a rectangular tube-shaped member, and upper and lower ends are opened. An article to be packaged C weighed by the combination weighing device 2 is put into the opening at the upper end of the tube 13b. The former 13a is disposed so as to surround the tube 13b. The form of the former 13a is such that the sheet-like film F fed out from the film roll is formed into a cylindrical shape when passing between the former 13a and the tube 13b. Further, the tube 13b and the former 13a of the forming mechanism 13 can be replaced according to the size of the bag to be manufactured.

  As shown in FIG. 2, the pull-down belt mechanism 14 is a mechanism that adsorbs and continuously conveys the rectangular tube-shaped film Fm wound around the tube 13b, and belts 14c are provided on both the left and right sides of the tube 13b. It has been. In the pull-down belt mechanism 14, the belt 14c having an adsorption function is rotated by the driving roller 14a and the driven roller 14b to carry the square tubular film Fm downward. In FIG. 2, a roller drive motor that rotates the drive roller 14a and the like is not shown.

  The vertical sealing mechanism 15 is a mechanism that heats and vertically seals the overlapping portion of the rectangular tubular film Fm wound around the tube 13b against the tube 13b with a constant pressure. The vertical sealing mechanism 15 is located on the front side of the tube 13b, and has a heater and a heater belt that is heated by the heater and contacts an overlapping portion of the square tubular film Fm. The vertical seal mechanism 15 also includes a drive device (not shown) for moving the heater belt closer to or away from the tube 13b.

  The horizontal sealing mechanism 17 is disposed below the forming mechanism 13, the pull-down belt mechanism 14, and the vertical sealing mechanism 15. As shown in FIG. 2, the lateral seal mechanism 17 is configured to include a pair of seal jaws 17a and 17b that incorporate a heater.

  The pair of sealing jaws 17a and 17b sandwich the square tubular film Fm so that they are pressed against each other, and apply pressure and heat to a part of the square tubular film Fm that is the upper and lower ends of the bag to seal Apply.

  As shown in FIG. 3, the gusset forming mechanism 18 is disposed between the pull-down belt mechanism 14 and the lateral seal mechanism 17, and a pair of folding members 18a disposed on the left and right sides so as to sandwich the square tubular film Fm. , 18b is used to form a gusset (folded portion) G (see FIG. 5A, etc.) on the side surface portion of the bag B. The gusset forming mechanism 18 will be described in detail later.

[Configuration of Gusset Forming Mechanism 18]
The gusset forming mechanism 18 includes folding members 18 a and 18 b and a servo motor M as shown in FIGS. 3 and 4.

  The folding members 18a and 18b are thin plate-like members as shown in FIGS. 2 and 3, and are driven into a substantially circular orbit by driving the servo motor M as shown in FIGS. While moving along, the left and right side surfaces are sandwiched with the vertical seal portion B5 of the rectangular tube film Fm as a center so as to contact a part of the rectangular tube film Fm. At this time, a part (gusset G) folded inward is formed in a part of the rectangular tube-shaped film Fm, as shown in FIGS. 5 (a) and 5 (b).

[Configuration of Horizontal Seal Mechanism 17]
As shown in FIGS. 2 and 6, the horizontal sealing mechanism 17 is disposed below the forming mechanism 13, the pull-down belt mechanism 14, and the vertical sealing mechanism 15. The horizontal sealing mechanism 17 has two sealing jaws 17a and 17b that are thermocompression-bonded and cut by sandwiching the square tubular film Fm from the horizontal direction. The seal jaws 17a and 17b are used in a state of being heated by built-in heaters.

  The horizontal seal mechanism 17 is configured to press the pair of seal jaws 17a and 17b against each other and perform thermocompression when the square tube film Fm is horizontally sealed while rotating the two seal jaws 17a and 17b in a D shape. By forming horizontal seal portions B2 and B3 on the upper and lower sides of the main body B1 of the bag B, and simultaneously cutting the center of the horizontal seal portions B2 and B3 with a cutter built in the seal jaw 17a or 17b, The formed bag B is cut off from the subsequent square tube film Fm.

  Instead of cutting with a cutter, the pair of sealing jaws 17a and 17b may be thermally fused.

  As shown in FIG. 7, the seal jaw 17a on the front side of the pair of seal jaws 17a and 17b has a shape protruding in a dogleg shape, and the seal jaw 17b on the rear side is It has a concave shape. As a result, when the pair of seal jaws 17a and 17b are engaged, the pressure contact surface 22 (that is, the contact surface between the seal jaws) becomes a "<" shape. Thereby, folding of the horizontal seal part B3 at the bottom of the bag B can be facilitated.

  Further, as shown in FIG. 7, the seal jaw 17a on the front side of the pair of seal jaws 17a, 17b extends from the upper end surface 23 or the lower end surface 24 in a direction inclined by an angle θ1 (110 to 120 degrees). It has a shape that protrudes into a garlic shape. Further, the sealing jaw 17b on the rear side has a concave shape in a dogleg shape so as to extend from the upper end surface 25 or the lower end surface 26 in a direction inclined at an angle θ2 (60 to 70 degrees).

  In this way, the front seal jaw 17a protrudes in a U-shape so as to extend in a direction inclined at an angle θ1 (110 to 120 degrees), and the rear seal jaw 17b has an angle θ1 (60 Since it is recessed in a U-shape so as to extend in an inclined direction, the lower side seal portion B3 is quickly and reliably heated to the bag bottom B4 (see FIGS. 10 to 11) when the bag B is dropped. It can be bent to the optimum angle for crimping.

  When the angle θ1 on the protruding side is smaller than 110 degrees (that is, when the angle θ2 on the recessed side is larger than 70 degrees), the angle at which the lower side seal portion B3 is bent becomes smaller. It becomes difficult to reliably perform thermocompression bonding to the bag bottom B4 when B is dropped. On the other hand, when the angle θ1 on the protruding side is larger than 120 degrees (that is, when the angle θ2 on the recessed side is smaller than 60 degrees), the angle for bending the lower horizontal seal portion B3 becomes too large, and the horizontal seal It becomes difficult to thermocompress and cut the parts B2 and B3 themselves.

[Configuration of Bottom Heating Mechanism 21]
As shown in FIGS. 8 and 9, the bottom heating mechanism 21 has a heater plate 31, a guide chute 32, an air injection unit 33, and an extrusion unit 34.

  In addition, although the bottom part heating mechanism 21 is contained in the structure of the bag making packaging machine 3, it can be comprised as a unit different from another component.

  The heater plate 31 is disposed below the horizontal sealing mechanism 17 and abuts on the bottom B4 of the bag B that is separated from the rectangular tubular film Fm by the horizontal sealing mechanism 17 and heats the bottom B4 of the bag B.

  The heater plate 31 is configured by arranging a rod-shaped heater on the bottom surface of a plate body made of a highly heat-conductive material. When the bag B falls on the heater plate 31, the heater plate 31 heats the bottom B4 of the bag B to 150 to 160 degrees, and the lateral seal portion B3 below the bottom B4 of the bag B is used as the bottom B4 of the bag B. Can be thermocompression bonded easily and quickly.

  The guide chute 32 is disposed below the horizontal sealing mechanism 17 and the bag B separated from the rectangular tube-shaped film Fm by the horizontal sealing mechanism 17 is dropped onto the heater plate 31 with the bag B almost upright. invite. The height of the guide chute 32 is appropriately selected depending on the product C stored in the bag B. In the case of the product C such as confectionery, for example, if the height is about 30 cm, the lower horizontal seal portion B3 Can be reliably thermocompression bonded to the bottom B4 of the bag B, and damage to the confectionery can be suppressed.

  The guide chute 32 includes a pair of side guide plates 32a and 32b that guide the bag B along both sides of the falling bag B, and a back guide plate 32c that guides the bag B along the back side of the falling bag B. Have. That is, the guide chute 32 has a shape that surrounds the falling bag B from three directions, and can reliably drop the bag B in an upright state.

  Further, the back guide plate 32c is slightly laid back in order to control the posture of the falling bag B (in particular, to prevent the bag from falling forward). Specifically, the rear guide plate 32c is slightly inclined rearward by a predetermined angle with respect to the direction extending vertically upward from the heater plate 31. The inclination angle is selected from a range of angles at which the falling bag B can come into contact with the back guide plate 32c and the bottom B4 of the bag B immediately after dropping can surely come into surface contact with the heater plate 31.

  The air injection unit 33 controls the posture of the falling bag B so that it does not fall forward with the air pressure of the compressed air with respect to the falling bag B.

  Specifically, the air injection unit 33 controls the posture of the falling bag B so that the bag B does not fall forward by injecting air from the front or upper front to the falling bag B. The air injection unit 33 can be controlled in posture so that the bag B immediately after dropping does not fall forward on the heater plate 31 through a nozzle 33a from an external high-pressure air generation source (not shown). In addition, the pressure in the direction of pressing the bag B from above can be applied to the bag B by jetting from the front upper side as well as prevention of forward tilting, so that the effect of the reliable bottom folding of the lateral seal portion B3 is also possible.

  In addition, by injecting an air jet from the nozzle 33a in accordance with the timing of the fall of the bag B, the posture of the bag B can be stabilized (prevention of falling forward) and the bottom seal of the lateral seal portion B3 can be ensured. Is possible.

  The jet angle, jet pressure, and jet time of the air jet from the nozzle 33a are appropriately selected in consideration of various conditions such as the product C inside the bag B and the manufacturing speed.

  The extruding unit 34 can push the bag B immediately after dropping onto the heater plate 31 to the conveyor V arranged in front of the heater plate 31 through the opening 32d formed in the back guide plate 32c of the guide chute 32. The bag B can be quickly discharged from above the heater plate 31 before the next bag B falls.

  The push-out portion 34 has a pusher plate 34a that contacts the bag B and a push rod 34b that reciprocates the pusher plate 34a back and forth. The pusher plate 34a reciprocates between a storage position arranged on the same plane as the back guide plate 32c and a position protruding forward.

[Features of bag making and packaging machine 3]
(1)
In the bag making and packaging machine 3 of the embodiment, the bottom B4 of the bag B is disposed below the horizontal sealing mechanism 17 and abuts against the bottom B4 of the bag B that is separated from the rectangular tubular film Fm by the horizontal sealing mechanism 17 and falls. Since the bottom heating mechanism 21 that heats the bag B is provided, the horizontal seal portion B3 on the lower side of the bottom B4 of the bag B can be easily and quickly thermocompression bonded to the bottom B4 of the bag B as shown in FIGS.

  As a result, since the existing bag making and packaging machine can be used, the cost of the bag making and packaging machine 3 can be reduced. For example, in this embodiment, although the bottom part heating mechanism 21 is contained in the structure of the bag making packaging machine 3, it can be comprised as a unit different from another component, and existing bag making packaging machine and Combinations are also possible easily.

  The speed of the bag making operation, the simplification of the mechanism of the bag making and packaging machine 3, and the space saving of the bag making and packaging machine 3 can be achieved.

  In particular, simply by dropping the bag B onto the heater plate 31, the lateral seal portion B3 of the bottom portion B4 of the bag B can be easily and quickly thermocompression bonded to the bottom surface of the bag B, so that the bag making operation can be performed continuously. Therefore, high speed is possible.

  That is, if the manufacturing speed is increased and the high-speed performance is increased while intermittently performing the operation of folding the lateral seal portion at the bottom as in a conventional bag making and packaging machine, the bag bottom is not sufficiently sealed and a product defect occurs. Although there is a possibility, as long as the bag B is dropped onto the heater plate 31 and thermocompression-bonded as in the bag making and packaging machine 3 of the present embodiment, continuous operation of the machine operation is possible and good It is possible to form a bag bottom.

(2)
In the bag making and packaging machine 3 of the embodiment, the guide chute 32 is provided along a pair of side guide plates 32 a and 32 b that guide the bag B along both sides of the falling bag B, and along the back side of the falling bag B. And a back guide plate 32c for guiding the bag B. That is, the guide chute 32 has a shape that surrounds the falling bag B from three directions, and can reliably drop the bag B in an upright state.

  Thereby, it can fall in an upright state reliably, guiding the bag B which falls from both sides and the back. And since the front side of the guide chute | shoot 32 is open | released, the bottom part B4 of the bag B can be rapidly conveyed by conveyance means, such as the conveyor V, after thermocompression bonding.

(3)
In the bag making and packaging machine 3 of the embodiment, the back guide plate 32c is inclined rearward with respect to the direction extending vertically upward from the heater plate 31, so that the posture control of the falling bag B (especially forward tilting). Prevention).

(4)
Moreover, in the bag making packaging machine 3 of embodiment, since the air injection part 33 performs attitude | position control of the falling bag B with the air pressure of compressed air with respect to the falling bag B, the attitude | position control (( In particular, it is possible to reliably carry out forward tilt prevention).

(5)
Moreover, in the bag making packaging machine 3 of embodiment, the air injection part 33 performs attitude | position control of the bag B which falls by injecting air from the front or front upper direction with respect to the bag B which falls. As a result, it is possible to prevent the body from falling forward and to ensure the effect of the bottom break by the injection from the front upper side.

(6)
In the bag making and packaging machine 3 of the present embodiment, the seal jaw 17a on the front side of the pair of seal jaws 17a and 17b has a shape protruding in a dogleg shape, and the seal jaw 17b on the rear side has a dogleg shape. It has a concave shape. Thereby, it is possible to facilitate the folding of the lateral seal portion B3 at the bottom B4 of the bag B, and the bottom folding can be realized quickly and reliably by continuous operation.

  In other words, after lateral sealing, the bag B is dropped onto the heater plate 31 below the sealing jaws 17a and 17b by free fall, and the lateral sealing portion B3 as shown in FIGS. It is possible to quickly manufacture a bag B having a flat bottom portion B4 that is bent and has a beautiful square bottom shape.

(7)
Further, in the bag making and packaging machine 3 of the present embodiment, the front side sealing jaw 17a protrudes in a dogleg shape so as to extend in a direction inclined by an angle θ1 (110 to 120 degrees), and the rear side so as to correspond thereto. Since the seal jaw 17b is recessed in a dogleg shape so as to extend in a direction inclined at an angle θ1 (60 to 70 degrees), the lower side seal portion B3 is quickly and reliably placed on the bag bottom B4 when the bag B is dropped. It can be bent to the optimum angle that can be thermocompression bonded to the surface. As a result, a clean bottom fold can be realized more quickly and reliably.

[Other Embodiments]
As mentioned above, although one Embodiment of this invention was described, this invention is not limited to the said embodiment, A various change is possible in the range which does not deviate from the summary of invention.

(A)
First, the confectionery packaged by the bag making and packaging machine of the present invention has a certain amount of weight that can reliably bend the lower side seal portion B3 when the bag falls on the heater plate. It is preferable. Therefore, for example, as a relatively heavy confectionery, a snack confectionery coated with chocolate is preferable.

(B)
In the above-described embodiment, the attitude control means is described by taking as an example the air injection means for controlling the attitude of the falling bag by injecting air from the front or the front upper side to the falling bag B. However, the present invention is not limited to this, and vacuum suction, pusher and other posture control means may be adopted.

(C)
Note that the bag making and packaging machine of the present invention can perform intermittent bag making operations, but in this case as well, bag making operations can be performed at a higher speed than before.

  The bag making and packaging machine of the present invention is widely applicable to a bag making and packaging machine that performs bag making processing by performing horizontal sealing while continuously conveying packaging materials.

1 is a perspective view showing an overall configuration of a combination weighing system according to an embodiment of the present invention. The perspective view which shows the structure of a shaping | molding mechanism, a pull-down belt mechanism, a vertical seal mechanism, a horizontal seal mechanism, and a gusset formation mechanism among the bag making packaging machines contained in the combination measurement system of FIG. The disassembled perspective view which shows schematically the structure of each member contained in the bag making packaging machine of FIG. The front view which shows the structure of a gusset formation mechanism and a horizontal seal mechanism periphery contained in the bag making packaging machine of FIG. (A), (b) is the top view and front view which show the state by which the folding member was pressed with respect to the cylindrical film. The schematic diagram which shows the thermocompression bonding and cutting | disconnection operation | movement of the horizontal seal mechanism of FIG. FIG. 3 is an enlarged view showing a pair of seal jaws of the lateral seal mechanism of FIG. 2. The perspective view of the bottom part heating mechanism of FIG. The front view of the bottom part heating mechanism and conveyor of FIG. The side view of the bag manufactured by the bag making packaging machine of FIG. The front view of the bag manufactured by the bag making packaging machine of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 Combination measuring device 3 Bag making packaging machine 5 Bag making packaging unit 6 Film supply unit 10 Combination weighing system 13 Forming mechanism 13a Former 13b Tube 14 Pull-down belt mechanism 14a Drive roller 14b Follower roller 14c Belt 15 Vertical seal mechanism 17 Horizontal seal mechanism 17a , 17b Seal jaw 18 Gusset forming mechanism 18a, 18b Folding member 21 Bottom heating mechanism 22 Pressure contact surface 31 Heater plate 32 Guide chute 32a, 32b Side guide plate 32c Rear side guide plate 32d Opening 33 Air injection part 34 Extrusion part B Bag B1 Body B2 Horizontal seal (top)
B3 Horizontal seal (bottom)
B4 Bottom B5 Vertical seal part C Product F Film Fm Square tubular film G Gusset M Servo motor

Claims (8)

A transport section for continuously transporting the cylindrical packaging material;
A horizontal sealing mechanism for sealing the cylindrical packaging material in the lateral direction and separating the bag formed by the seal from the subsequent packaging material;
A bottom heating means that is disposed below the horizontal seal mechanism, contacts the bottom of the bag that is separated from the packaging material by the horizontal seal mechanism and drops, and heats the bottom of the bag;
Bag making and packaging machine. Guiding means that is disposed below the lateral sealing mechanism and guides a bag that is separated from the packaging material by the lateral sealing mechanism and drops onto the bottom heating means in a state where the bag is substantially upright. Yes,
The bag making and packaging machine according to claim 1. The guiding means includes
A pair of side guide plates for guiding the bag along both sides of the falling bag;
A back guide plate for guiding the bag along the back side of the falling bag,
The bag making and packaging machine according to claim 2. The back guide plate is inclined rearward with respect to a direction extending vertically upward from the bottom heating means.
have,
The bag making and packaging machine according to claim 3. It further comprises posture control means for controlling the posture of the falling bag by applying an external force to the falling bag.
The bag making and packaging machine according to any one of claims 1 to 4. The attitude control means is an air injection means for performing attitude control of the falling bag by injecting air from the front or upper front to the falling bag.
The bag making and packaging machine according to claim 5. The lateral sealing mechanism has a pair of sealing jaws that are thermocompression-bonded and cut by sandwiching the cylindrical packaging material from the lateral direction,
Of the pair of seal jaws, one seal jaw has a shape protruding in a V shape, and the other seal jaw has a shape recessed in a V shape.
The bag making and packaging machine according to any one of claims 1 to 6. One of the pair of sealing jaws has a shape protruding in a dogleg shape so as to extend in a direction inclined by 110 to 120 degrees from the upper end surface or the lower end surface, and
The other sealing jaw has a concave shape in a dogleg shape so as to extend in a direction inclined by 60 to 70 degrees from the upper end face or the lower end face, respectively.
The bag making and packaging machine according to claim 7.

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