JP2015058964A - Bag forming and packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a very reliable bag forming and packaging machine that performs ultrasonic transverse sealing, which even when performing packaging using cylindrical films different in size, can prevent a horn and an anvil for the ultrasonic transverse sealing from coming into direct contact with each other without manufacturing the horn for the ultrasonic transverse sealing in accordance with the sizes of the cylindrical films.SOLUTION: The bag forming and packaging machine comprises a transverse sealing mechanism that performs transverse sealing of cylindrical films to be conveyed downward along a transverse direction crossing a conveyance direction. The transverse sealing mechanism includes a first horn and a first anvil for ultrasonic sealing. The transverse sealing mechanism has as the first anvil a plurality of components 51bn for the anvil having different widths Wa of seal surfaces 512b that sandwich the films between the first horn and the components when performing transverse sealing. The transverse sealing mechanism sandwiches the films between the first horn and the seal surfaces of the components for the first anvil and performs transverse sealing along the width direction of the seal surfaces.

Description

  The present invention relates to a bag making and packaging machine, and more particularly to a bag making and packaging machine that sandwiches a tubular film between a horn and an anvil and performs ultrasonic transverse sealing.

  2. Description of the Related Art Conventionally, a bag making and packaging machine that performs ultrasonic horizontal sealing by sandwiching a tubular film between a horn and an anvil is known (for example, Patent Document 1 (Japanese Patent Laid-Open No. 2012-236619)).

  When performing horizontal sealing with the ultrasonic unit, if the horn and the anvil come into direct contact with the horizontal seal, the quality of the horizontal seal and the life of the ultrasonic unit may be reduced. In particular, when the film is thin, there is a high possibility that the horn and the anvil are in direct contact with each other. Therefore, the horn and the anvil are designed according to the width of the tubular film.

  However, if the horn and the anvil are individually manufactured according to the width of the tubular film, the manufacturing cost increases. In particular, when the size of the horn is changed, the resonant circuit may need to be reviewed.

  An object of the present invention is to provide a bag making and packaging machine that performs ultrasonic horizontal sealing, and even when using different sizes of cylindrical films, the horn and anvil can be used without producing a horn according to the size of the cylindrical film. Provided is a highly reliable bag making and packaging machine that can easily prevent direct contact.

  The bag making and packaging machine according to the present invention includes an ultrasonic sealing mechanism that laterally seals a film formed in a cylindrical shape conveyed in a first direction along a direction intersecting the first direction. The ultrasonic sealing mechanism includes a horn and an anvil for ultrasonic sealing. The ultrasonic sealing mechanism has a plurality of anvil parts having different widths of tip contact portions that sandwich the film between the horn and the horn at the time of lateral sealing. The ultrasonic sealing mechanism sandwiches the film between the horn and the tip contact portion of one anvil part, and performs horizontal sealing along the width direction of the tip contact portion.

  Here, since the ultrasonic sealing mechanism has a plurality of anvil parts with different widths of the tip contact portion as an anvil, even if a film with a different width is used for packaging, if the anvil part is replaced, Direct contact between the horn and the anvil can be easily prevented. Therefore, it is possible to realize a highly reliable bag making and packaging machine while suppressing the manufacturing cost of the apparatus and preventing direct contact between the horn and the anvil.

  Moreover, in the bag making packaging machine which concerns on this invention, it is preferable that the width | variety of each part for anvils which opposes a horn at the time of a horizontal seal is the same as other parts for anvils. Each anvil part preferably has a tip contact portion having a width different from that of other anvil parts.

  Here, although the widths of the tip contact portions of the anvil parts are different, the width of the portion facing the horn at the time of lateral sealing, that is, the entire width of the anvil parts is the same. Therefore, even when the width of the tip contact portion is narrow, it is easy to fix the anvil to the support member of the anvil.

  Further, in the bag making and packaging machine according to the present invention, the ultrasonic seal mechanism is a portion that faces the horn at the time of horizontal sealing as an anvil, and a portion adjacent to both sides in the width direction of the tip contact portion is a horizontal seal. It is preferred to have an anvil component that is sometimes cut to be spaced from the horn.

  Here, in the anvil part, the adjacent part in the width direction of the tip contact part is cut away from the horn at the time of lateral sealing, so the width of the film formed in a cylindrical shape is narrow In addition, direct contact between the horn and the anvil can be prevented by using the anvil part manufactured by easy processing.

  Moreover, in the bag making packaging machine which concerns on this invention, it is preferable that the components for anvils are replaced | exchanged according to the width | variety of the horizontal seal direction of the film formed in the cylinder shape. The horn is preferably common regardless of which anvil component is used.

  Here, the anvil parts are changed according to the width of the film, and the horn is used in common, so that the direct contact between the horn and the anvil is suppressed while suppressing the manufacturing cost of the device, particularly the manufacturing cost related to the horn. Therefore, a highly reliable bag making and packaging machine can be realized.

  In the bag making and packaging machine of the present invention, since the ultrasonic sealing mechanism has a plurality of anvil parts having different widths of the tip contact portions as anvils, even when films having different widths are used for packaging, If the parts are replaced, direct contact between the horn and the anvil can be easily prevented. Therefore, it is possible to realize a highly reliable bag making and packaging machine while suppressing the manufacturing cost of the apparatus and preventing direct contact between the horn and the anvil.

It is a perspective view of the measurement packaging apparatus containing the bag making packaging machine which concerns on one Embodiment of this invention. It is a perspective view which shows schematic structure of the bag making packaging unit of the bag making packaging machine which concerns on FIG. It is the side view which looked at the horizontal sealing mechanism of the bag making packaging unit which concerns on FIG. 2 from the left side in FIG. It is the side view which looked at the locus | trajectory of the horn and anvil of the horizontal seal mechanism which concerns on FIG. 3 from the left side in FIG. FIG. 4 is a perspective view of a first rotating body and a second rotating body of the lateral seal mechanism according to FIG. 3. In FIG. 5, the tubular film is omitted. It is a perspective view of the 1st rotary body of the horizontal seal | sticker mechanism which concerns on FIG. It is a perspective view of the 1st anvil and its peripheral member attached to the 2nd rotary body of the horizontal seal mechanism which concerns on FIG. It is the top view which looked at the part for an anvil as an example used as a 1st anvil which concerns on FIG. 7 from upper direction. Here, a state in which guides are attached to both ends of the anvil component is illustrated. 5 is a side view of the first rotator and the second rotator according to FIG. 5 as viewed from the direction of the arrow IX when the first horn attached to the first rotator and the first anvil attached to the second rotator are viewed. is there. Fig.9 (a) is the side view which looked at the 1st horn and the 1st anvil where the guide was attached from the direction of arrow IX. FIG. 9B is a side view of the first horn and the first anvil from which the guide has been removed as seen from the direction of the arrow IX. It is the top view which looked at the part for anvils concerning the modification C from upper direction. In FIG. 10A and FIG. 10B, anvil parts having different full widths are respectively drawn.

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

(1) Overall Configuration FIG. 1 is a perspective view of a weighing and packaging apparatus 1 including a bag making and packaging machine 3 according to an embodiment of the present invention. FIG. 2 is a perspective view showing a schematic configuration of the bag making and packaging unit 3 a included in the bag making and packaging machine 3.

  The weighing and packaging apparatus 1 includes a combination weighing machine 2 and a bag making and packaging machine 3. The bag making and packaging machine 3 includes a bag making and packaging unit 3a and a film supply unit 3b.

  The combination weighing machine 2 is disposed above the bag making and packaging unit 3a. In the combination weighing machine 2, the weight of the article C (package) is weighed by a plurality of weighing hoppers, and these weights are combined so as to have a predetermined total weight. Is discharged downward.

  The bag making and packaging unit 3 a of the bag making and packaging machine 3 packs the article C in accordance with the timing at which the article C is supplied from the combination weighing device 2. The film supply unit 3b supplies the film F for packaging used as the bag B to the bag making packaging unit 3a.

  The weighing packaging device 1 is provided with an operation switch 4 for operating the weighing packaging device 1. In addition, the weighing and packaging apparatus 1 is provided with a touch panel display 5 that displays an operation state of the weighing and packaging apparatus 1 and accepts various setting inputs to the weighing and packaging apparatus 1. The operation switch 4 and the touch panel display 5 function as an input unit that receives instructions for the combination weighing machine 2 and the bag making and packaging machine 3 and settings related to the combination weighing machine 2 and the bag making and packaging machine 3. The touch panel display 5 functions as an output unit that displays information related to the combination weighing machine 2 and the bag making and packaging machine 3. In this embodiment, the operation switch 4 and the touch panel display 5 are shared by the combination weighing machine 2 and the bag making and packaging machine 3, but the present invention is not limited to this. May be provided.

  The operation switch 4 and the touch panel display 5 are connected to a control unit (not shown) including a CPU, a ROM, a RAM, and the like. The combination weighing machine 2 and the bag making and packaging machine 3 are controlled by a control unit (not shown) in accordance with operations and settings input from the operation switches 4 and the touch panel display 5. The control unit takes in necessary information from various sensors (not shown) installed in the combination weighing machine 2 and the bag making and packaging machine 3 and uses the information to configure the combination weighing machine 2 and the bag making and packaging machine 3. Control. In this embodiment, the control unit controls both the combination weighing machine 2 and the bag making and packaging machine 3. However, the control unit is not limited to this, and the control unit controls each of the combination weighing machine 2 and the bag making and packaging machine 3. A part may be provided.

(2) Detailed configuration Details of the bag making and packaging machine 3 will be described.

  In the following description, expressions such as “front (front)”, “rear (back)”, “up”, “down”, “left”, “right”, etc. may be used to express the direction. Here, “front (front)”, “rear (back)”, “up”, “down”, “left”, and “right” are defined as shown in FIG. Unless otherwise specified, expressions such as “front (front)”, “rear (back)”, “up”, “down”, “left”, and “right” are used according to the definition of FIG. The expressions “upstream” and “downstream” may be used, but “upstream” and “downstream” are based on the transport direction of the film F.

(2-1) Bag making and packaging unit The bag making and packaging unit 3a will be described below.

  The bag making and packaging unit 3a mainly includes a forming mechanism 13, a pull-down belt mechanism 14, a vertical sealing mechanism 15, a horizontal sealing mechanism 17, and a cutting mechanism 70 (see FIGS. 2 and 5).

  The forming mechanism 13 forms the sheet-like film F conveyed from the film supply unit 3b into a cylindrical shape. The pull-down belt mechanism 14 conveys a tubular film F (hereinafter referred to as a tubular film Fc) downward. The vertical sealing mechanism 15 seals the overlapping portion (joint) of the tubular film Fc in the vertical direction. The horizontal sealing mechanism 17 seals the tubular film Fc transported downward in the lateral direction, in other words, along the direction intersecting the transport direction with the tubular film Fc transported downward. By sealing, the upper and lower ends of the bag B are sealed. The cutting mechanism 70 cuts the tubular film Fc in order to separate the laterally sealed bag B from the tubular film Fc.

(2-1-1) Forming Mechanism The forming mechanism 13 includes a tube 13b and a former 13a.

  The tube 13b is a cylindrical member, and the upper and lower ends are open. The article C weighed by the combination weighing machine 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 sheet-like film F fed out from the film roll of the film supply unit 3b is formed into a cylindrical shape when passing between the former 13a and the tube 13b. The tube 13b and the former 13a of the forming mechanism 13 can be replaced according to the size of the bag B to be manufactured.

(2-1-2) Pull-down belt mechanism The pull-down belt mechanism 14 adsorbs the cylindrical film Fc wound around the tube 13b and continuously conveys it downward. As shown in FIG. 2, the pull-down belt mechanism 14 has a pair of belts 14 c arranged so as to sandwich the tube 13 b on the left and right sides of the tube 13 b. 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, so that the tubular film Fc is conveyed downward. In FIG. 2, a roller drive motor that rotates the drive roller 14a and the like is not shown.

(2-1-3) Vertical Seal Mechanism The vertical seal mechanism 15 ultrasonically seals the tubular film Fc in the vertical direction (vertical direction in FIG. 2).

  The vertical seal mechanism 15 is disposed on the front side of the tube 13b (see FIG. 2). The vertical seal mechanism 15 is driven in the front-rear direction so as to approach the tube 13b or away from the tube 13b by a drive mechanism (not shown). The vertical seal mechanism 15 is driven by the drive mechanism so as to approach the tube 13b, so that the overlapping portion (joint) of the tubular film Fc wound around the tube 13b is between the vertical seal mechanism 15 and the tube 13b. Sandwiched. The vertical sealing mechanism 15 is pressed against the tube 13b with a constant pressure by the drive mechanism (with the overlapping portion of the cylindrical film Fc sandwiched between the vertical sealing mechanism 15 and the tube 13b), and the cylindrical film Ultrasonic seal Fc in the longitudinal direction.

(2-1-4) Lateral Seal Mechanism The lateral seal mechanism 17 is in a state in which the tubular film Fc is sandwiched between the first horn 51a and the first anvil 51b, which will be described later, or the second horn 52a and the second anvil 52b. Ultrasonic seal. The lateral seal mechanism 17 is an example of an ultrasonic seal mechanism that laterally seals the tubular film Fc conveyed downward along a direction intersecting the conveyance direction of the tubular film Fc.

  As shown in FIGS. 3 and 4, the horizontal sealing mechanism 17 mainly includes a first rotating body 50 a, a second rotating body 50 b, and a horizontal direction driving mechanism 55. The first rotating body 50a is arranged on the back side of the tubular film Fc (left side in FIGS. 3 and 4). The 2nd rotary body 50b is distribute | arranged to the front side of the cylindrical film Fc (right side in FIG. 3 and FIG. 4). The horizontal direction driving mechanism 55 moves the first rotating body 50a and the second rotating body 50b horizontally in the front-rear direction (left-right direction in FIGS. 3 and 4) so as to approach each other or away from each other (see FIG. 3 and FIG. 4). 3 and the arrow in FIG. 4).

  A first horn 51a and a second anvil 52b for ultrasonic sealing are attached to the first rotating body 50a (see FIGS. 3 and 4). The second anvil 52b is disposed at a position 180 degrees away from the first horn 51a and the rotation axis of the first rotating body 50a. A first anvil 51b and a second horn 52a for ultrasonic waves are attached to the second rotating body 50b (see FIGS. 3 and 4). The 2nd horn 52a is arrange | positioned in the position 180 degree apart about the rotating shaft of the 1st anvil 51b and the 2nd rotary body 50b. As will be described later, the first horn 51a and the first anvil 51b, or the second horn 52a and the second anvil 52b are obtained by rotating the first rotator 50a and the second rotator 50b around the rotation axis. , The tubular film Fc is sandwiched, and the tubular film Fc is laterally sealed.

  The first rotating body 50a and the second rotating body 50b will be described in more detail.

  As shown in FIG. 5, the first rotating body 50 a is rotatably supported by the turning shaft 94 and the turning shaft 95, the lever 91 d and the lever 92 d that are rotatably supported by the turning shaft 94, and the turning shaft 95. Lever 91e and lever 92e. The turning shaft 94 is fixed to a first horizontal moving plate 61a, which will be described later, disposed on the left side of the first rotating body 50a. The turning shaft 95 is fixed to a first horizontal moving plate 61a, which will be described later, disposed on the right side of the first rotating body 50a. The left end portion of the first horn 51 a is fixed to the end portion of the lever 91 d supported by the turning shaft 94. The right end portion of the first horn 51 a is fixed to the end portion of the lever 91 e supported by the turning shaft 95. Further, the left end portion of the second anvil 52b is fixed to the end portion of the lever 92d supported by the turning shaft 94. The right end portion of the second anvil 52b is fixed to the end portion of the lever 92e supported by the turning shaft 95.

  As shown in FIG. 5, the second rotating body 50 b is rotatably supported by the turning shaft 96 and the turning shaft 97, the lever 91 f and the lever 92 f that are rotatably supported by the turning shaft 96, and the turning shaft 97. Lever 91g and lever 92g. The turning shaft 96 is fixed to a second horizontal moving plate 61b, which will be described later, disposed on the left side of the second rotating body 50b. The turning shaft 97 is fixed to a second horizontal moving plate 61b, which will be described later, disposed on the right side of the second rotating body 50b. The left end portion of the first anvil 51b is fixed to the end portion of the lever 91f supported by the turning shaft 96. The right end portion of the first anvil 51b is fixed to the end portion of the lever 91g supported by the turning shaft 97. Further, the left end portion of the second horn 52 a is fixed to the end portion of the lever 92 f supported by the turning shaft 96. The right end portion of the second horn 52 a is fixed to the end portion of the lever 92 g supported by the turning shaft 97.

  The first rotator 50a and the second rotator 50b are driven by a drive motor (not shown) and rotate around a rotation axis extending in the horizontal sealing direction (left-right direction). In other words, the first rotating body 50a and the second rotating body 50b are driven by the drive motor, and rotate around the rotation centers C1 and C2, respectively, in a side view (see FIG. 4). Thereby, the 1st horn 51a and the 2nd anvil 52b rotate centering on the rotation center C1, and the 1st anvil 51b and the 2nd horn 52a rotate centering on the rotation center C2 (refer FIG. 4). As shown in FIG. 4, the first rotating body 50a rotates clockwise around the rotation center C1 when viewed from the left side. In other words, the first horn 51a and the second anvil 52b rotate clockwise about the rotation center C1 when viewed from the left side as shown in FIG. On the other hand, the second rotating body 50b rotates counterclockwise around the rotation center C2 as viewed from the left side as shown in FIG. In other words, the first anvil 51b and the second horn 52a rotate counterclockwise around the rotation center C2 when viewed from the left side as shown in FIG.

  The first rotating body 50a and the second rotating body 50b are driven in the front-rear direction by the horizontal direction driving mechanism 55 as described below.

  Both ends of the first rotating body 50a are supported by the first horizontal moving plate 61a (see FIG. 3) in the horizontal sealing direction (in the left-right direction). More specifically, the turning shafts 94 and 95 of the first rotating body 50a are supported by the first horizontal moving plate 61a. The second rotating body 50b is supported at both ends thereof by a second horizontal moving plate 61b (see FIG. 3) in the horizontal sealing direction (in the left-right direction). More specifically, the turning shafts 96 and 97 of the second rotating body 50b are supported by the second horizontal moving plate 61b. The first horizontal moving plate 61a and the second horizontal moving plate 61b are driven by the horizontal driving mechanism 55 so as to approach or separate from each other in a side view (see arrows in FIG. 3).

  The horizontal driving mechanism 55 will be described in detail.

  The horizontal drive mechanism 55 includes a servo motor 80, a ball screw 80a, a first nut 81, a second nut 82, a first connecting rod 85, and a second connecting rod 86.

  The ball screw 80a is driven and rotated by a servo motor 80 (see FIG. 3). The first nut 81 and the second nut 82 are screwed into the ball screw 80a. In the ball screw 80a, a portion where the first nut 81 is screwed and a portion where the second nut 82 is screwed are mutually reverse screws. The first connecting rod 85 connects the first nut 81 and the second horizontal moving plate 61b. In FIG. 3, only a side view seen from the left side is shown, but the second horizontal moving plate 61 b arranged on the right side (not shown) is also connected to the first nut 81 by the first connecting rod 85. The first connecting rod 85 is not connected to the first horizontal movement plate 61a, and extends through the first horizontal movement plate 61a so as to be slidable. The first connecting rod 85 is provided so as to extend along the moving direction of the first horizontal moving plate 61a and the second horizontal moving plate 61b (in the front-rear direction in FIG. 2). The second connecting rod 86 connects the second nut 82 and the first horizontal movement plate 61a. In FIG. 3, only a side view seen from the left side is shown, but the first horizontal moving plate 61 a arranged on the right side (not shown) is also connected to the second nut 82 by the second connecting rod 86. Similarly to the first connecting rod 85, the second connecting rod 86 is also provided to extend along the moving direction of the first horizontal moving plate 61a and the second horizontal moving plate 61b (in the front-rear direction in FIG. 2). .

  When the ball screw 80a is rotated by the servo motor 80, the first horizontal moving plate 61a and the second horizontal moving plate 61b move horizontally so as to approach or separate from each other in the side view (arrows in FIG. 3). reference).

  The horizontal movement of the first rotating body 50a and the second rotating body 50b by the horizontal direction driving mechanism 55 and the rotation operation of the first rotating body 50a and the second rotating body 50b are combined, and the first horn 51a and the second anvil are combined. 52b, the first anvil 51b, and the second horn 52a are swiveled in a D shape when viewed from the side (see the trajectory of the horn and anvil shown by the two-dot chain line in FIG. 4). (See the arrow shown in the chain line). The pair of horns and anvils, that is, the first horn 51a and the first anvil 51b, or the second horn 52a and the second anvil 52b sandwich the tubular film Fc conveyed downward, and the tubular film Fc Perform horizontal sealing along the direction intersecting the transport direction. The first horn 51a and the first anvil 51b or the second horn 52a and the second anvil 52b rotate until the tubular film Fc is sandwiched, and the vertical direction is from the beginning of the tubular film Fc to the end of the sandwich. It moves in a straight line and rotates again from the end of the sandwich of the tubular film Fc. The first horn 51a and the first anvil 51b, or the second horn 52a and the second anvil 52b are linear in the vertical direction while sandwiching the tubular film Fc from the front side and the back side with a predetermined pressure. Perform ultrasonic transverse sealing while moving.

  As shown in FIG. 4, the first horn 51a and the first anvil 51b or the second horn 52a and the second anvil 52b are arranged at a predetermined position above the lateral seal mechanism 17 (in the lateral seal mechanism 17). And a film detection sensor 59 is disposed slightly above the position where the tubular film Fc starts to be sandwiched. As the film detection sensor 59, for example, a photoelectric sensor, an ultrasonic sensor, or the like is applied.

  The film detection sensor 59 confirms the presence or absence of the tubular film Fc immediately before the start of lateral sealing by the first horn 51a and the first anvil 51b or the second horn 52a and the second anvil 52b. When it is determined from the signal of the film detection sensor 59 that the tubular film Fc does not exist, the first horn 51a and the first anvil 51b, or the second horn 52a and the second anvil 52b, Without performing the operation for the horizontal seal, the swivel operation is performed while maintaining a gap between the horns 51a and 52a and the anvils 51b and 52b. Thereby, it can prevent that the 1st horn 51a and the 1st anvil 51b, or the 2nd horn 52a and the 2nd anvil 52b contact directly, and are damaged.

(2-1-4-1) Horn The first and second horns 51a and 52a will be described in detail.

  The first horn 51a is provided on the first rotating body 50a, and the second horn 52a is provided on the second rotating body 50b. The first horn 51a is paired with the first anvil 51b provided on the second rotating body 50b to perform the horizontal sealing of the tubular film Fc, and the second horn 52a is the first horn provided on the first rotating body 50a. The horizontal seal of the tubular film Fc is performed in pairs with the two anvils 52b. Except for these points, since the first horn 51a and the second horn 52a have the same structure and function, only the first horn 51a will be described here, and the description regarding the second horn 52a will be omitted.

  The first horn 51a functions as a pair with the first anvil 51b, and the cylindrical film Fc sandwiched between the first horn 51a and the first anvil 51b is transferred in the conveyance direction of the cylindrical film Fc (here, Ultrasonic horizontal seal is performed along a direction (here, left-right direction) intersecting with (downward). The first horn 51a is manufactured by machining a metal such as stainless steel.

  In the bag making and packaging machine 3 according to the present embodiment, as described later, the size of the bag B for packaging the article C, in other words, the width Wf (see FIG. 2) in the horizontal sealing direction (left-right direction) of the tubular film Fc. Accordingly, anvil parts 51b1, 51b2,... 51bn used as the first anvil 51b are replaced. However, the first horn 51a is common regardless of the width Wf of the tubular film Fc in the lateral seal direction. That is, the first horn 51a is not replaced by the width Wf of the tubular film Fc in the lateral seal direction. In other words, the first horn 51a is common regardless of which anvil component 51b1, 51b2,... 51bn is used as the first anvil 51b. Regardless of the anvil parts 51b1, 51b2,... 51bn used as the first anvil 51b, the cost of the bag making and packaging machine 3 (particularly the horn and the parts for the horn is reduced) by making the first horn 51a common. Manufacturing cost).

  The width Wh in the horizontal sealing direction (left-right direction) of the sealing surface 512a (see FIG. 6) of the first horn 51a facing the first anvil 51b at the time of horizontal sealing can be adapted to the difference in the width Wf of the tubular film Fc. It is designed to be larger than the maximum value of the width Wf of the tubular film Fc that may be used in the bag making and packaging machine 3.

  As shown in FIG. 6, the first horn 51a is formed with a groove 73 that opens at the seal surface 512a. The groove 73 is formed to extend in the horizontal sealing direction (left-right direction). The groove 73 passes through the knife 72 when the packaged bag B is separated from the tubular film Fc by the knife 72 of the cutting mechanism 70 disposed in the anvil side knife movement space Sa of the first anvil 51b, which will be described later. The horn side knife moving space Sh to be formed is formed. The groove 73 and the horn side knife moving space Sh will be described later.

  Three vibrators 511 as vibration generators are connected to the first horn 51a so as to be arranged at equal intervals along the horizontal sealing direction (see FIG. 6). By vibrating these three vibrators 511, a portion of the tubular film Fc sandwiched between the seal surface 512a of the first horn 51a and the seal surface 512b of the first anvil 51b is welded. Note that the number of the vibrators 511 is an example, and is not limited to this. An appropriate number of vibrators 511 may be arranged according to the dimensions of the first horn 51a.

(2-1-4-2) Anvil The first and second anvils 51b and 52b will be described in detail.

  The first anvil 51b is provided on the second rotating body 50b, and the second anvil 52b is provided on the first rotating body 50a. The first anvil 51b is paired with the first horn 51a provided on the first rotating body 50a to perform horizontal sealing of the tubular film Fc, and the second anvil 52b is provided on the second rotating body 50b. The horizontal seal of the tubular film Fc is performed in pairs with the two horns 52a. Except for these points, since the first anvil 51b and the second anvil 52b have the same structure and function, the first anvil 51b will be described here, and the description regarding the second anvil 52b will be omitted.

  The first anvil 51b functions as a pair with the first horn 51a, and the cylindrical film Fc in a state of being sandwiched between the first horn 51a and the first anvil 51b is transported in the conveyance direction of the cylindrical film Fc ( Here, ultrasonic transverse sealing is performed along a direction (here, left-right direction) intersecting with the downward direction. The first anvil 51b is manufactured by machining a metal such as stainless steel.

  The lateral seal mechanism 17 is a first anvil 51b, which is a plurality of anvil parts 51b1, prepared in accordance with the size of the bag B for packaging the article C, in other words, the width Wf of the tubular film Fc (see FIG. 2). 51bn... 51bn.

  The anvil parts 51b1, 51b2,... 51bn are used together with the first horn 51a to provide a tip contact portion that sandwiches the tubular film Fc with the first horn 51a when performing horizontal sealing of the tubular film Fc. Each width is different. In other words, when the anvil parts 51b1, 51b2,... 51bn are used together with the first horn 51a to perform horizontal sealing of the tubular film Fc, the tubular film between the sealing surface 512a of the first horn 51a. The width Wa in the horizontal sealing direction (left-right direction) of the seal surface 512b (see FIG. 7) that sandwiches Fc differs depending on the part. When one of the anvil parts 51b1, 51b2,... 51bn is attached to the second rotating body 50b as the first anvil 51b and the bag making and packaging machine 3 is operated, the seal surface 512a of the first horn 51a, The tubular film Fc is sandwiched between the sealing surface 512b of the one anvil 51b, and the tubular film Fc is ultrasonically sealed along the width direction of the sealing surface 512a and the sealing surface 512b.

  51bn is different from the other anvil parts 51b1, 51b2,... 51bn in the sealing direction 512b in the sealing direction 512b, but the first horn 51a is used for side sealing. , That is, the total width Wt in the left-right direction of the anvil parts 51b1, 51b2,... 51bn (see FIG. 7) is the same as the other anvil parts 51b1, 51b2, 51bn. That is, the anvil parts 51b1, 51b2,... 51bn have different width Wa in the sealing direction of the seal surface 512b for each part, but the anvil parts 51b1, 51b2,. doing. Since the total width Wt is the same, it is easy to firmly fix the second rotating body 50b and the anvil parts 51b1, 51b2,... 51bn even when the width Wa of the seal surface 512b is small.

  The sealing surface 512b of the anvil parts 51b1, 51b2,... 51bn is disposed at the center of the anvil parts 51b1, 51b2,. In the anvil parts 51b1, 51b2,... 51bn, the seal surface of the part that is used as the first anvil 51b together with the first horn 51a and faces the first horn 51a when performing horizontal sealing of the tubular film Fc. A portion adjacent to both sides in the width direction (left-right direction) of 512b (tip contact portion) is cut so as to be spaced from the first horn 51a during horizontal sealing. That is, in the parts 51b1, 51b2,... 51bn for anvils, the first anvil 51b is used together with the first horn 51a, and when performing the horizontal sealing of the tubular film Fc, The adjacent surface 513b is formed by cutting both end portions in the width direction (left-right direction), and the portion that has not been cut remains as the seal surface 512b. When the anvil parts 51b1, 51b2,... 51bn are used together with the first horn 51a as the first anvil 51b to perform horizontal sealing of the tubular film Fc, the sealing surface 512a of the first horn 51a and the first anvil 51b are used. The sealing surface 512b of the first horn 51a and the adjacent surface 513b are separated from each other by a predetermined distance (for example, 1.5 mm) (FIG. 9B). reference).

  When the use of the bag making and packaging machine 3 is started or when the width Wf of the cylindrical film Fc used is changed, the width Wa of the sealing surface 512b is larger than the width Wf of the cylindrical film Fc, and the sealing surface The anvil parts 51b1, 51b2,... 51bn whose width Wa of 512b is as close as possible to the width Wf of the tubular film Fc are selected as the first anvil 51b and attached to the second rotating body 50b. By using the anvil parts 51b1, 51b2,... 51bn having different width Wa of the seal surface 512b according to the width Wf of the tubular film Fc, the width Wa of the seal surface 512b is changed to the width Wf of the tubular film Fc. Therefore, the possibility that the first horn 51a and the first anvil 51b come into contact with each other can be reduced as compared with the case where the first horn 51a is constant. It should be noted that the anvil parts 51b1, 51b2,... 51bn may be prepared individually for each width Wf of the used tubular film Fc, or the width Wf of the used tubular film Fc. (For example, when the width of the tubular film Fc is in the range of 200 mm to 220 mm, the anvil part 51b1 is used, and the width of the tubular film Fc is in the range of 220 mm to 240 mm). In some cases, the anvil part 51b2 is used). If anvil parts 51b1, 51b2,... 51bn are prepared for each width Wf of the tubular film Fc used, it is easier to reduce the possibility that the first horn 51a and the first anvil 51b come into contact with each other. It is. On the other hand, if the anvil parts 51b1, 51b2,... 51bn are prepared for each range of the width Wf of the tubular film Fc used, the anvil parts 51b1, 51b2,. Manufacturing cost can be suppressed rather than preparing.

  The first anvil 51b (that is, the anvil parts 51b1, 51b2,... 51bn) is used together with the first horn 51a on the side facing the first horn 51a when performing horizontal sealing of the tubular film Fc. An opening 74 is formed (see FIG. 7). The groove 74 is formed to extend in the horizontal sealing direction (left-right direction). The groove 74 forms an anvil side knife movement space Sa in which a knife 72 of a cutting mechanism 70 described later is disposed. The knife 72 disposed in the anvil side knife movement space Sa moves toward the first horn 51a when the cylindrical film Fc is laterally sealed, and further inside the horn side knife movement space Sh formed in the first horn 51a. Driven to move. As a result, the packaged bag B is separated from the upstream tubular film Fc by the knife 72. The groove 74 and the anvil side knife movement space Sa will be described later.

  Separate guides 76 are provided at both ends of the first anvil 51b in the lateral sealing direction (both ends in the left-right direction). The guide 76 is a member constituting a cutting mechanism 70 described later. The guide 76 is a non-metallic member (for example, a resin member). The mounting position of the guide 76 is adjusted with respect to the first anvil 51b (anvil parts 51b1, 51b2,..., 51bn) in a state of being removed from the second rotating body 50b. The guide 76 whose mounting position with respect to the first anvil 51b is adjusted is fixed to the first anvil 51b (anvil parts 51b1, 51b2,..., 51bn) by a bolt 78 as a fastening member.

  The guide 76 is formed with a guide groove 77 that opens in the same direction as the groove 74 of the first anvil 51b. In other words, when the first anvil 51b is used together with the first horn 51a to perform the horizontal sealing of the tubular film Fc, the guide groove 77 is provided with the first rotating body 50a to which the first horn 51a is attached. Open to the side. The guide groove 77 forms a guide space Sg that guides the movement of the knife 72 when the knife 72 of the cutting mechanism 70 described later is driven by the air cylinder 75 to separate the bag B from the tubular film Fc.

  In the state where the first horn 51a and the first anvil 51b sandwich the tubular film Fc, the guide 76 is closer to the first horn 51a side than the first anvil 51b (the first rotating body 50a that supports the first horn 51a). (See FIGS. 5, 7, and 8). The guide space Sg formed in the guide 76 is also more first than the anvil side knife moving space Sa formed in the first anvil 51b in a state where the first horn 51a and the first anvil 51b sandwich the tubular film Fc. It protrudes to the horn 51a side (the first rotating body 50a side that supports the first horn 51a) (see FIGS. 9A and 9B).

(2-1-5) Cutting mechanism The cutting mechanism 70 is provided with respect to each of the first anvil 51b and the second anvil 52b. Each cutting mechanism 70 includes a metal (for example, stainless steel) knife 72 housed in the anvil-side knife movement space Sa of the anvils 51b and 52b, an air cylinder 75 as a knife driving unit for driving the knife 72, and the anvil 51b. , 52b and two guides 76 provided at both left and right ends. The guide 76 has a guide space Sg for guiding the movement of the knife 72 when the knife 72 is driven by the air cylinder 75.

  Since the cutting mechanism 70 provided in the first anvil 51b and the cutting mechanism 70 provided in the second anvil 52b have the same configuration and function, the cutting mechanism 70 provided in the first anvil 51b is used here. And description of the cutting mechanism 70 provided in the second anvil 52b will be omitted.

  The knife 72 of the cutting mechanism 70 provided in the first anvil 51b is stored in the anvil-side knife movement space Sa of the first anvil 51b when the tubular film Fc is not being cut. The knife 72 is driven by the air cylinder 75 in accordance with the timing for horizontally sealing the tubular film Fc. That is, the knife 72 is driven by the air cylinder 75 at a timing when the first horn 51a and the first anvil 51b sandwich the tubular film Fc and the first horn 51a and the first anvil 51b are driven in the vertical direction. Is done. The knife 72 is driven by the air cylinder 75 so as to move in the anvil side knife moving space Sa toward the first horn 51a and further reach the horn side knife moving space Sh formed in the first horn 51a. The The knife 72 is arranged in the anvil side knife movement space Sa with the transverse seal direction (left and right direction) by the first horn 51a and the first anvil 51b as the longitudinal direction. The knife 72 is arranged so that the cutting edge of the knife 72 faces the first horn 51a side in a state where the first horn 51a and the first anvil 51b sandwich the tubular film Fc. As described above, when the knife 72 is driven so as to pass through the anvil side knife movement space Sa and reach the horn side knife movement space Sh, the packaged bag B is moved by the knife 72 into the tubular film Fc. Disconnected from. The bag B separated from the tubular film Fc is discharged from the lower part of the weighing and packaging apparatus 1. When the packaged bag B is cut from the tubular film Fc and reaches the horn-side knife movement space Sh, the control air moves from the air cylinder 75 to the horizontal direction, and the anvil-side knife moves. Return to the space Sa.

  The anvil side knife movement space Sa, the horn side knife movement space Sh, and the guide space Sg will be described in more detail.

  FIG. 9A shows a state in which the sealing surface 512a of the first horn 51a and the sealing surface 512b of the first anvil 51b sandwich the tubular film Fc as shown in FIG. From the left), it is a view of the first horn 51a and the first anvil 51b to which the guide 76 is attached. In FIG. 9A, a portion that cannot be seen due to the presence of the guide 76 is drawn with a broken line. FIG. 9B shows a state in which the sealing surface 512a of the first horn 51a and the sealing surface 512b of the first anvil 51b sandwich the cylindrical film Fc as shown in FIG. It is the figure which looked at the 1st horn 51a and the 1st anvil 51b from which the guide 76 was removed. In FIGS. 5 and 9, the tubular film Fc is omitted from the drawings.

  The horn side knife movement space Sh and the anvil side knife movement space Sa will be described with reference to FIG. In a state where the first horn 51a and the first anvil 51b sandwich the tubular film Fc, the horn side knife movement space Sh and the anvil side knife movement space Sa of the first horn 51a are as shown in FIG. 9B. It will be in the state connected to.

  The width Dh of the horn side knife moving space Sh and the width Da of the anvil side knife moving space Sa are designed to have the same dimensions (see FIG. 9B). That is, the width Dh of the horn side knife movement space Sh and the width Da of the anvil side knife movement space Sa in the thickness direction of the knife 72 have the same dimension. In other words, the horn in the vertical direction orthogonal to the moving direction of the knife 72 driven by the air cylinder 75 (front-rear direction, leftward as indicated by an arrow in FIG. 9B) and the longitudinal direction of the knife 72 (left-right direction). The widths Dh and Da of the side knife movement space Sh and the anvil side knife movement space Sa have the same dimensions.

  When the first horn 51a and the first anvil 51b sandwich the tubular film Fc, the upper surface 73a of the groove 73 that defines the upper edge of the horn-side knife moving space Sh of the first horn 51a and the first anvil The upper surface 74a of the groove 74 that defines the upper edge of the anvil side knife movement space Sa of 51b is located at the same height. In a state where the first horn 51a and the first anvil 51b sandwich the tubular film Fc, the lower surface 73b of the groove 73 that defines the lower edge of the horn-side knife moving space Sh of the first horn 51a, and the first anvil 51b The lower surface 74b of the groove 74 that defines the lower edge of the anvil side knife moving space Sa is located at the same height.

  If the tubular film Fc is not sandwiched between the first horn 51a and the first anvil 51b, the tubular film Fc is not ultrasonically sealed even if the vibrator 511 connected to the first horn 51a is vibrated. Therefore, when the sealing surface 512a of the first horn 51a and the sealing surface 512b of the first anvil 51b sandwich the tubular film Fc, the groove 73 of the first horn 51a and the groove 74 of the first anvil 51b face each other. The cylindrical film Fc arranged in (not sandwiched between the sealing surface 512a and the sealing surface 512b) is not laterally sealed. That is, the tubular film Fc arranged in the portion where the groove 73 of the first horn 51a and the groove 74 of the first anvil 51b are opposed does not contribute to the sealing of the bag B. Therefore, in order to use the tubular film Fc as effectively as possible, the width of the groove 73 of the first horn 51a and the groove 74 of the first anvil 51b, in other words, the width Da of the anvil side knife moving space Sa and the horn side knife. The width Dh of the moving space Sh is desirably as small as possible. Therefore, it is desirable that the thickness Dn of the knife 72 moving in the horn side knife moving space Sh and the anvil side knife moving space Sa is as thin as possible. For example, here, the thickness Dn of the knife 72 is 1.2 mm, and the width Dh of the horn side knife moving space Sh and the width Da of the anvil side knife moving space Sa are 2.0 mm. In addition, the numerical value quoted here is an illustration, and is not limited to this. However, the thickness Dn of the knife 72 is desirably 1.2 mm or less.

  The guide space Sg will be described with reference to FIG. When viewed from the direction of the arrow IX in FIG. 5 (from the left side), the guide space Sg is arranged so as to fit in the section of the width Da of the anvil side knife movement space Sa in the vertical direction (FIG. 9A). reference). In other words, when the first horn 51a and the first anvil 51b perform lateral sealing of the tubular film Fc, the upper surface 77a of the guide groove 77 that defines the upper edge of the guide space Sg is the upper edge of the anvil-side knife movement space Sa. Is disposed below the upper surface 74a of the groove 74 (see FIG. 9A). Further, when the first horn 51a and the first anvil 51b perform lateral sealing of the tubular film Fc, the lower surface 77b of the guide groove 77 that defines the lower edge of the guide space Sg is the lower edge of the anvil-side knife movement space Sb. It arrange | positions above the lower surface 74b of the groove | channel 74 to define (refer Fig.9 (a)). Also, the width Dg of the guide space Sg (perpendicular to the moving direction of the knife 72 driven by the air cylinder 75 (front-rear direction, leftward as indicated by an arrow in FIG. 9A)) and the longitudinal direction of the knife 72 (left-right direction). The width in the vertical direction) is smaller than the width Da of the anvil side knife movement space Sa. For example, the width Da of the anvil side knife movement space Sa is 2.0 mm, whereas the width Dg of the guide space Sg is 1.6 mm. However, the numerical values given here are merely examples, and the present invention is not limited to this. The width Dg of the guide space Sg should be larger than the thickness Dn of the knife 72 and smaller than the width Da of the anvil side knife moving space Sa. . Since the guide space Sg and the anvil-side knife movement space Sa are in the above relationship, even if the first anvil 51b is driven to rotate and the knife 72 is bent and deformed in the vertical direction, the knife 72 is It is easy to contact the guide 76 before contacting the anvil 51b. That is, the guide 76 prevents the knife 72 from coming into direct contact with the first anvil 51b during the ultrasonic sealing, and the life reduction of the lateral sealing mechanism 17 is suppressed. After the mounting position of the guide 76 with respect to the first anvil 51b is adjusted so that the positional relationship between the guide space Sg and the anvil-side knife movement space Sa is as described herein, the first anvil 51b is tightened by the bolt 78. Fixed to.

  Further, when viewed from the direction of the arrow IX in FIG. 5, that is, from the left side, the guide space Sg protrudes to the first horn 51a side from the anvil side knife movement space Sa, and a part of the guide space Sg is It arrange | positions so that it may overlap with the horn side knife movement space Sh. Since the guide space Sg protrudes to the first horn 51a side with respect to the anvil side knife movement space Sa, the guide space Sg allows the knife 72 to move in the horn side knife movement space Sh. Movement is guided. When viewed from the direction of the arrow IX in FIG. 5, the guide space Sg is arranged so as to be within the section of the width Dh of the horn side knife moving space Sh in the vertical direction (see FIG. 9A). . In other words, when the first horn 51a and the first anvil 51b perform lateral sealing of the tubular film Fc, the upper surface 77a of the guide groove 77 that defines the upper edge of the guide space Sg is the upper edge of the horn-side knife movement space Sh. Is disposed below the upper surface 73a of the groove 73 (see FIG. 9A). Further, when the first horn 51a and the first anvil 51b perform lateral sealing of the tubular film Fc, the lower surface 77b of the guide groove 77 that defines the lower edge of the guide space Sg is the lower edge of the horn-side knife moving space Sh. It arrange | positions above the lower surface 73b of the groove | channel 73 to prescribe | regulate (refer Fig.9 (a)). Also, the width Dg of the guide space Sg (perpendicular to the moving direction of the knife 72 driven by the air cylinder 75 (front-rear direction, leftward as indicated by an arrow in FIG. 9A)) and the longitudinal direction of the knife 72 (left-right direction). The width in the vertical direction) is smaller than the width Dh of the horn side knife moving space Sh. Since the guide space Sg and the horn side knife moving space Sh are in the above relationship, even if the first anvil 51b is driven to rotate and the knife 72 is bent and deformed in the vertical direction, the knife 72 is It is easy to contact the guide 76 before contacting the horn 51a. That is, the guide 76 prevents the knife 72 from coming into direct contact with the first horn 51a during the ultrasonic sealing, and can suppress a decrease in the life of the lateral sealing mechanism 17.

(2-2) Film supply unit The film supply unit 3b is a unit which supplies the sheet-like film F with respect to the shaping | molding mechanism 13 of the bag making packaging unit 3a. The film supply unit 3b is provided adjacent to the bag making and packaging unit 3a. A roll around which the film F is wound is set in the film supply unit 3b, and the film F is fed out from this roll.

(3) Features Features of the bag making and packaging machine 3 according to this embodiment will be described below.

  Here, for convenience of explanation, the features of the bag making and packaging machine 3 are described using the first horn 51a and the first anvil 51b, but even if the second horn 52a and the second anvil 52b are used, Similarly, the features of the bag making and packaging machine 3 can be explained.

(3-1)
The bag making and packaging machine 3 according to the present embodiment is configured such that a film (cylindrical film Fc) formed in a cylindrical shape conveyed in a first direction (downward in the present embodiment) intersects the first direction (this book). In the embodiment, a horizontal sealing mechanism 17 is provided as an ultrasonic sealing mechanism that performs horizontal sealing in the horizontal direction. The horizontal sealing mechanism 17 includes a first horn 51a and a first anvil 51b for ultrasonic sealing. The horizontal sealing mechanism 17 is a first anvil 51b, and a plurality of anvil parts 51b1 and 51b2 having different widths Wa of sealing surfaces 512b (tip contact portions) that sandwich the tubular film Fc with the first horn 51a during horizontal sealing. ,..., 51bn. The lateral seal mechanism 17 sandwiches the tubular film Fc between the first horn 51a and the seal surface 512b of one anvil component 51b1, 51b2,..., 51bn, and extends along the width direction of the seal surface 512b. Perform horizontal sealing.

  Here, since the horizontal sealing mechanism 17 has a plurality of anvil parts 51b1, 51b2,..., 51bn having different widths Wa of the sealing surface 512b as the first anvil 51b, the cylindrical films Fc having different widths Wf are used. Even when used for packaging, if the anvil parts 51b1, 51b2,..., 51bn are replaced, direct contact between the first horn 51a and the first anvil 51b can be easily prevented. Therefore, it is possible to realize a highly reliable bag making and packaging machine 3 by preventing direct contact between the first horn 51a and the first anvil 51b while suppressing the manufacturing cost of the bag making and packaging machine 3.

(3-2)
In the bag making and packaging machine 3 according to the present embodiment, each anvil component 51b1, 51b2,..., 51bn has a width Wt of a portion facing the first horn 51a at the time of horizontal sealing, and the other anvil components 51b1, 51b2. ,..., 51bn. Each of the anvil parts 51b1, 51b2,..., 51bn is different in the width Wa of the seal surface 512b from the other anvil parts 51b1, 51b2,.

  Here, although the widths Wa of the sealing surfaces 512b of the anvil parts 51b1, 51b2,..., 51bn are different from each other, the width of the part facing the first horn 51a at the time of lateral sealing, that is, the anvil parts 51b1, 51b2,. .., 51bn have the same total width Wt. Therefore, even when the width Wa of the seal surface 512b is narrow, it is easy to firmly fix the first anvil 51b to the second rotating body 50b that supports the first anvil 51b.

  Further, since the full width Wt in the left-right direction of the anvil parts 51b1, 51b2,... 51bn is the same, it is easy to attach the guides 76 to both ends in the left-right direction of the anvil parts 51b1, 51b2,. It is.

(3-3)
In the bag making and packaging machine 3 according to the present embodiment, the horizontal seal mechanism 17 is the first anvil 51b that faces the first horn 51a at the time of horizontal sealing, that is, when used as the first anvil 51b, A portion facing one horn 51a, which is adjacent to both sides in the width direction of the seal surface 512b (adjacent surface 513b) is cut so as to leave a distance from the first horn 51a during horizontal sealing. It has anvil parts 51b1, 51b2,..., 51bn.

  Here, in the anvil parts 51b1, 51b2,..., 51bn, the portions adjacent to both sides in the width direction of the seal surface 512b (adjacent surface 513b) are cut away from the first horn 51a during lateral sealing. Therefore, even when the width Wf of the tubular film Fc is narrow, the first horn 51a and the first anvil 51b are used by using the anvil parts 51b1, 51b2,. Direct contact with can be prevented.

(3-4)
In the bag making and packaging machine 3 according to the present embodiment, the anvil parts 51b1, 51b2,..., 51bn are exchanged according to the width Wf of the cylindrical film Fc in the lateral seal direction. The first horn 51a is common regardless of which anvil part 51b1, 51b2,..., 51bn is used.

  Here, the anvil parts 51b1, 51b2,..., 51bn are changed according to the width Wf of the tubular film Fc, and the first horn 51a is used in common, so that the manufacturing cost of the bag making and packaging machine 3, particularly Can prevent the direct contact between the first horn 51a and the first anvil 51b while suppressing the manufacturing cost related to the first horn 51a, thereby realizing a highly reliable bag making and packaging machine 3.

(4) Modifications Modifications of the present embodiment are shown below. It should be noted that a plurality of modified examples may be appropriately combined as long as there is no contradiction.

(4-1) Modification A
The lateral seal mechanism 17 according to the above-described embodiment is configured such that the horns 51a and 52a and the anvils 51b and 52b are rotated in a D shape so that the first horn 51a and the first anvil 51b or the second horn 52a and The tubular film Fc is sandwiched between the second anvils 52b to perform horizontal sealing, but the present invention is not limited to this.

  For example, the lateral seal mechanism sandwiches the cylindrical film Fc conveyed in the first direction between the horn and the anvil by linearly reciprocating at least one of the horn and the anvil toward the other. You may perform a horizontal seal along the direction which cross | intersects a 1st direction.

(4-2) Modification B
In the lateral seal mechanism 17 according to the above embodiment, the first rotating body 50a is provided with the first horn 51a and the second anvil 52b, the second rotating body 50b is provided with the first anvil 51b and the second horn 52a, Although the 1 horn 51a and the 1st anvil 51b and the 2nd horn 52a and the 2nd anvil 52b pinch | interpose the cylindrical film Fc alternately and perform horizontal sealing, it is not limited to this.

  For example, in the bag making and packaging machine 3, only the first horn 51a is provided on the first rotating body 50a, only the first anvil 51b is provided on the second rotating body 50b, and only the first horn 51a and the first anvil 51b are provided. It may be used for horizontal sealing. Further, for example, the bag making and packaging machine 3 may have three or more sets of horns and anvils, and use them instead of performing horizontal sealing of the tubular film Fc.

(4-3) Modification C
In the horizontal sealing mechanism 17 according to the above embodiment, all the anvil parts 51b1, 51b2,..., 51bn have the same total width Wt, but the present invention is not limited to this.

  For example, as shown in FIG. 10, the anvil parts 51b1, 51b2,..., 51bn are set so that the total width Wt of the anvil parts 51bm (1 ≦ m ≦ n) and the width Wa of the seal surface 512b are equal. It may be formed. Also, in the other anvil parts 51bk (1 ≦ k ≦ n, k ≠ m), the total width Wt may be formed to be equal to the width Wa of the seal surface 512b. However, the full width Wt of the anvil part 51bm is different from the full width Wt of the anvil part 51bk. That is, the full width may be different depending on the anvil parts 51b1, 51b2,. However, from the viewpoints of fixing the anvils 51b, 51a and the rotating bodies 50b, 50a, attaching the guides 76 to the anvils 51b, 51a, etc., the full width Wt of the anvil parts 51b1, 51b2,. Is desirable.

(4-4) Modification D
The anvil parts 51b1, 51b2,..., 51bn of the lateral seal mechanism 17 according to the above embodiment are formed as an integrated product, but are not limited thereto. For example, the anvil part 51bn may be configured by combining a plurality of members.

(4-5) Modification E
The anvil parts 51b1, 51b2,..., 51bn of the lateral seal mechanism 17 according to the above embodiment are cut at adjacent portions adjacent to each other in the width direction of the seal surface 512b. However, the present invention is not limited to this. The anvil parts 51b1, 51b2,..., 51bn may be manufactured by any method generally used for manufacturing such parts.

  The bag making and packaging machine according to the present invention is a bag making and packaging machine that performs ultrasonic horizontal sealing, and when a cylindrical film having a different size is used for packaging, the ultrasonic horizontal sealing is performed in accordance with the size of the cylindrical film. Therefore, it is useful as a highly reliable bag making and packaging machine that can easily prevent direct contact between the horn for ultrasonic transverse sealing and the anvil without producing a horn for use.

3 Bag making and packaging machine 17 Horizontal sealing mechanism (ultrasonic sealing mechanism)
51a First horn 51b First anvil 51b1, 51b2,... 51bn Anvil part 512b Seal surface (tip contact portion)
52a Second horn 52b Second anvil Wa Seal surface width (tip contact portion width)
Wt Full width of the anvil (width of the part facing the horn during horizontal sealing)
Fc Cylindrical film (film formed in a cylindrical shape)

JP 2012-236619 A

Claims (4)

A bag making and packaging machine provided with an ultrasonic sealing mechanism that laterally seals a film formed in a cylindrical shape conveyed in a first direction along a direction intersecting the first direction,
The ultrasonic sealing mechanism is
Including a horn and anvil for ultrasonic sealing,
As the anvil, it has a plurality of anvil parts with different widths of the tip contact portion that sandwiches the film with the horn during lateral sealing,
A film is sandwiched between the horn and the tip contact portion of the one anvil part, and transverse sealing is performed along the width direction of the tip contact portion.
Bag making and packaging machine. Each of the anvil parts has the same width as that of the other anvil parts at the time of lateral sealing, and the width of the tip contact portion is different from that of the other anvil parts.
The bag making and packaging machine according to claim 1. The ultrasonic sealing mechanism is a portion that faces the horn during lateral sealing as the anvil, and a portion that is adjacent to both sides in the width direction of the tip contact portion opens a distance from the horn during lateral sealing. The anvil part being cut into
The bag making and packaging machine according to claim 1 or 2. The anvil parts are exchanged according to the width in the transverse seal direction of the cylindrically formed film,
The horn is common regardless of which anvil part is used,
The bag making and packaging machine according to any one of claims 1 to 3.

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