JP4859617B2 - Filling and packaging machine - Google Patents

Description

  The present invention relates to a filling and packaging machine, and more particularly, to a filling and packaging machine that sequentially forms bag portions on a packaging material made of a long heat-adhesive film or sheet and fills each bag portion with a filling material such as a powder.

  Among powder filling and packaging machines, horizontal rotary type packaging machines are a plurality of seals that are vertically arranged around a disc-shaped or cylindrical rotating body that rotates about a vertical axis and arranged at equal intervals. Means. Each sealing means includes a fixed seal bar and a movable seal bar, and a chute capable of moving up and down is disposed between the fixed seal bar and the movable seal bar. According to this filling and packaging machine, the long thermal adhesive sheet or film packaging material unwound from the coil is folded in half along the longitudinal center line and supplied toward the outer periphery of the rotating body. The fixed seal bar that circulates with the rotating body and the movable seal bar that faces the rotating seal bar are sequentially sandwiched, and circulates with the rotation of the rotating body. At this time, each pair of seal bars (fixed seal bar and movable seal bar) heat-presses the sandwiched film in the vertical direction, and periodically seals in the width direction at regular intervals in the longitudinal direction of the film. And a bag portion is formed between the widthwise seals adjacent to each other.

  The chute is a bag portion of a bi-fold film that is inserted through a gap at the upper edge between a film piece (sheet piece) folded in half by a film guide at the lower part of the chute and sandwiched by adjacent seal bars Filled into the bag portion through a chute with a filling material such as powder that has been placed inside and dropped and supplied from the metering device. After the filling, the holding state of the fixed seal bar and the movable seal bar is released, and the film containing the filling material in each bag portion is continuously sent out from the apparatus.

  FIGS. 12-14 shows the horizontal rotary type powder filling and packaging machine 10. Referring to FIG. 12, the filling and packaging machine 10 includes a decoiler 13 that supplies a packaging material including a long film 12 or a sheet from a pair of film rolls to a lower portion of a machine body (housing) 11. The filling and packaging machine 10 also includes a filling mechanism 17 including a rotating plate (rotating body) 16 provided with a large number of seal portions 14 and chutes 15 at the top, a powder supply device 18 for supplying a fixed amount of powder, and a filling mechanism. 17 is provided with an upper edge sealing device 19 for sealing the upper edge of the film 12 coming out of 17, and a cutter device 20 for cutting or perforating the width seal portion.

  Referring to FIG. 13, the filling mechanism 17 includes a vertical fixed cylindrical body 22 erected on a substrate 21 with a vertical axis Z as a center, and a concentric and upper portion of the fixed cylindrical body 22 via a bearing 23. The rotary cylinder 24 is supported rotatably about the axis Z, and the rotary plate 16 or the rotary table is fixed to the upper end of the rotary cylinder 24. A plurality of seal portions 14 are fixed on the circumference of the rotating plate 16 on the circumference of the radius r with the axis Z as the center, with a predetermined interval, and between the seal portions 14 adjacent in the circumferential direction. A chute 15 is arranged. The rotating cylinder 24 is connected to the rotation drive system 26 via a gear 54 fixed around the rotation cylinder 24, and the plurality of seal portions 14 and the chute 15 are connected to each other based on the rotation transmitted from the rotation drive system 26 to the gear 54. Go around.

  Each seal portion 14 includes a fixed bar (fixed seal bar) 27 and a movable bar (movable seal bar) 28. The fixed bar 27 has a vertical seal surface 27a with a built-in electric heater (heating source), and the vertical seal surface 27a is arranged on or around the circumference of the radius r centering on the axis Z. And fixed to the rotating plate 16. The movable bar 28 has a pressing surface 28a that can be brought into contact with and separated from the sealing surface 27a of the fixed bar 27, and is disposed radially outside the axis Z with respect to the pair of fixed bars 27. A vertical position (seal position: position shown on the right side of FIG. 13) where the surface 28a contacts the seal surface 27a and a horizontal position (first non-seal position: left side of FIG. 13) where the pressing surface 28a is separated from the seal surface 27a. The rotary plate 16 is swingably connected to the rotary plate 16 via a horizontal shaft 30 so as to be movable between Further, the movable bar 28 includes a bar driving rod 29 extending from a base end portion supported by the horizontal shaft 30 in a direction substantially perpendicular to the pressing surface 28 a, and rotates at the tip of the bar driving rod 29. A child 31 is provided.

  A rail (first guide means or first guide rail) 32 for guiding the rotor 31 is disposed around the filling mechanism 17. The level of the vertical direction of the rail 32 is determined according to the turning angle so that the rotor 31 is guided up and down according to the turning angle of the seal portion 14. As a result, the movable bar 28 contacts and separates from the vertical fixed bar 27 while the rotor 31 rotates around the horizontal axis 30 according to the rotation of the rotating plate 16.

  As shown in FIG. 14, the chute 15 is a funnel-shaped guide tube that forms a powder dropping path that is continuous in the vertical direction. The chute lower part 33 having an elliptical cross section and the upper end of the chute lower part 33 upward. A chute upper part 34 having an enlarged inner diameter, and a horizontal arm part 35 extending laterally from the upper part of the chute lower part 33 or the lower part of the chute upper part 34 are provided. As shown in FIG. 13, the chute 15 configured as described above is fixed by connecting the tip of the horizontal arm portion 35 to the upper end fixture 37 of the chute lifting shaft 36. The chute elevating shaft 36 penetrates the rotating plate 16 and extends in the vertical direction outside the rotating cylinder 24, and includes a metal fitting 38 and a cam follower 39 supported by the metal fitting 38 at the lower end. The cam follower 39 extends toward the center of the fixed cylinder 24 and is accommodated in a cam groove 41 continuously engraved on the outer periphery of a fixed sleeve 40 that is externally fixed to the lower part of the fixed cylinder 22. is there. The cam groove 41 is set so that the level in the vertical direction is determined on the outer periphery of the sleeve 40 according to the turning angle. Therefore, according to the rotation of the rotating plate 16, the chute 15 is shown on the left side of FIG. 13 and the lowered position where the chute lower part 33 is inserted into the bag portion of the folded film 12, as shown on the right side of FIG. Thus, the chute lower part 33 moves between the raised positions located above the folded film 12.

  FIG. 14 shows the positional relationship between the rotating plate 16 and the seal portion 14 (see FIG. 13) of the filling mechanism 17 and the chute 15 corresponding to the seal portion 14. During operation of the filling and packaging machine 10, the rotating plate 16 rotates at a constant speed. The long film 12 supplied from the decoiler 13 is continuously supplied and is folded in half by a film guide 42 disposed immediately before the rotating plate 16. At the exit of the film guide 42, the chute lower part 33 of the chute 15 that rotates and approaches the film guide 42 is inserted between the film 12 folded in half. One side (inner surface) of the film 12 is supported by the vertical fixing bars 27 of the seal portion 14 on both sides of each chute 15. Further, the movable bar 28 rises from the horizontal position to the vertical position and comes into close contact with the vertical fixing bar 27, and the film 12 is heated at the close contact position to form the width direction seal 43, thereby forming a space between the adjacent width direction seals 43. An independent bag portion 44 is formed. Each bag portion 44 is filled with powder by dropping from a bag 46 provided in the rotary container 45 of the powder supply device 18 via the chute 15.

  When the filling of the powder is completed, the movable bar 28 returns from the vertical position to the horizontal position. The chute 15 returns from the lowered position to the raised position. Thereby, the film 12 continuously provided with each bag portion 44 filled with the powder is taken out from the filling mechanism 17. Thereafter, as shown in FIG. 12, the upper edge (bag opening of the bag portion 44) of the film 12 is sealed by the upper edge sealing device 19. Further, the cutter device 20 is cut at each width seal portion or perforated there, and then discharged to a discharge device (not shown).

  According to the above-described filling and packaging machine 10, as shown in FIG. 15, the bag portions 44 are continuously formed at a predetermined interval L in the folded folded belt-shaped packaging material 12, and A predetermined amount of filler 47 is filled.

JP-A-8-282635

  In this way, the filling and packaging machine 10 basically forms the bag portion 44 between the adjacent width seal portions 43 by forming the width seal portion 43 in accordance with the interval L of the seal portion 15. (This method is hereinafter referred to as “single-pitch filling method”). As shown in FIG. 17, the filling and packaging machine 10 is used to leave an interval L ′ (= 2L) that is twice as usual. Thus, there is a demand for forming a width seal portion 43 ′ and filling a large amount of filling material 47 into one bag portion 44 ′. Therefore, in order to meet this demand, conventionally, every other energization of the electric heater built in the fixed bar 27 is turned off, thereby increasing the filling amount of one bag portion 44 ′ (hereinafter referred to as “this”). The method is called “double pitch filling method”). However, in the conventional double pitch filling method, as shown in the figure, the filling amount of one bag portion 44 ′ is certainly doubled. However, when the filling material 47 is filled, the movable bar 27 and the fixed bar 28 are packed together with the packaging material 12. Therefore, it was impossible to increase the filling amount to more than twice (for example, 2.5 to 3 times).

  Therefore, the present invention has an object to provide a filling and packaging machine that can arbitrarily switch between a single pitch filling method and a double pitch filling method and can increase the filling amount in the double pitch filling method more than twice. And

  In order to achieve this object, the present invention provides a plurality of heat sealing means (14) arranged annularly around the axis (Z) and the plurality of heat sealing means (14) around the axis (Z). In addition, the belt-shaped packaging material (12) continuously provided is folded together, and the folded packaging material (12) is then folded into the heat sealing means (12). 14) is sandwiched between the first seal bar (27) and the second seal bar (28), and the packaging material (12) is placed at a predetermined interval in the longitudinal direction of the packaging material. In the filling and packaging machine for forming the bag part (44) by heat-sealing in the width direction and filling the bag part (44) with the filling material (47), the plurality of heat sealing means (14) are N pieces. Every (N: integer), the first seal bar (27) and the second seal bar Bar (28) is characterized by comprising a switching means (110) for switching to a non-operating state incapable sandwich the packaging material (12) capable clamping operating condition and the packaging material.

  According to the filling and packaging machine configured as described above, the single pitch filling method and the double pitch filling method can be arbitrarily switched, and the filling amount in the double pitch filling method can be increased more than twice.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of the invention will be described with reference to the accompanying drawings. Although the present invention relates to a filling and packaging machine, since the characteristic part is the structure of the seal mechanism, only the improvement of the seal mechanism will be described in the following description. However, the present invention is not limited to the specific filling and packaging machine described with reference to the accompanying drawings, and the filling filling bag is continuously formed from a long packaging material that is continuously fed out. It should be understood that the present invention is applicable to a packaging machine, and such a filling and packaging machine belongs to the technical scope of the present invention.

  FIG. 1 is a diagram showing the characteristics of a filling and packaging machine 10 ′ according to the present invention, and corresponds to FIG. 14 showing a conventional filling and packaging machine 10. As shown in the drawing, the filling and packaging machine 10 ′ is a region (hereinafter, referred to as “filling”) in which a bag portion formed between adjacent seal portions 14 is sealed while sealing the folded folded packaging material 12 with the seal portion 14. This area is referred to as a “seal filling area 100” (see FIGS. 3 and 4). The fixed bar 27 and the movable bar 28 are arranged so that the packaging material 12 cannot be clamped every other plurality of seal portions 14. It is characterized in that it includes switching means for the switching mechanism 110 for switching to the “operating state”.

  Details of the switching mechanism 110 and the related configuration will be described. First, referring to FIG. 1, an even number of the plurality of seal portions 14 are prepared, and the movable bar 28 always contacts the fixed bar 27 or seals the packaging material 12 together with the fixed bar 27 in the seal filling region 100 ( 2A (position shown on the right side of FIG. 2A), the first seal portions 14a are alternately arranged with the first seal portions 14a in the circumferential direction, and seals are made using a switching mechanism 110 described in detail later. In the filling region 100, a distinction is made between two types of the second seal portion 14b that can be switched between the above-described seal position and a non-seal position spaced apart from the non-fixed bar 27 (second non-seal position, see FIG. 9). .

  Therefore, as shown in FIG. 2A, the movable bar (first movable seal bar) 28 of the first seal portion 14 a has the first guided portion 103 at the end position of the bar driving rod 29. The first guided portion 103 is composed of a rotor similar to the rotor of the conventional filling and packaging machine (member indicated by reference numeral 31 in FIG. 13), and is a cylindrical sleeve 104 of a positioning member that is externally mounted on the bar driving rod 29. It is fixed at the place shown. As shown in FIG. 2B, the movable bar (second movable seal bar) 28 of the second seal portion 14b is provided at a position retracted from the terminal position of the bar driving rod 29 to the base end side. Two guided portions 111 are provided. Similar to the first guided portion 103, the second guided portion 111 is composed of a rotor, and is fixed at a location shown in the figure by a cylindrical sleeve 112 of a positioning member externally mounted on the bar driving rod 29. .

  The switching mechanism 110 guides the first guided portion 103 provided on the movable bar 28 of the first seal portion 14a and the second guided portion 111 provided on the movable bar 28 of the second seal portion 14b. Guiding means. The guide means holds the movable bar 28 of the first seal portion 14a at the seal position (the position shown on the right side of FIG. 2 (a)) in the seal filling region 100 and the movable bar 28 of the first seal portion 14a. As the first guide means for holding the movable bar 28 of the second seal portion 14b in the first non-seal position (the position shown on the left side of FIGS. 2A and 2B) in the non-seal filling region 101, an annular shape is used. The first guide portion or the first guide rail 113 is provided.

  As can be understood with reference to FIGS. 2 and 3, the first guide rail 113 has first and second guide rail portions 114 and 115 made of a member having a substantially U-shaped cross section (bracket shape).

  The first guide rail portion 114 substantially exists in the seal filling region 100 and is disposed along a circumference centering on the axis Z with the opening 116 facing the axis Z. The second guide rail portion 115 substantially exists in the non-seal filling region 101, and the opening 116 is twisted upward at the center of the non-seal filling region 101. The first and second guide rail portions 114 and 115 have a pair of flange portions 117 and 118 that form the opening portion 116, and a connecting portion 119 that connects the flange portions 117 and 118 on the opposite side of the opening portion 116. As is apparent from FIG. 2, the tip position of one flange portion of the first guide rail portion 114 (the flange portion 118 positioned downward on the right side in FIG. 2) is the other flange portion (upper side on the right side in FIG. 2). Retreat from the axis Z to the connecting portion 119 side with respect to the front end position of the flange portion 117), and a space 120 (a space necessary for the second guide rail to move up and down) is formed in front of the flange portion 118. ing. Therefore, in the movable bar 28 of the first seal portion 14a that passes through the seal filling region 100, the first guided portion 103 provided in the bar driving rod 29 has flange portions 117, 118 (particularly, the lower flange portion 118). To maintain the sealing position. On the other hand, as shown in FIG. 9, the movable bar 28 of the second seal portion 14 b that passes through the seal filling region 100 is free in that a second guide rail 121 described later is released by retreating below the space 120. In the state, based on its own weight, the second guided portion 111 enters the space 120 in front of the lower flange portion 118 and is installed at the second non-seal position. That is, the shape and structure (biasing means) of the movable bar 28 are designed so that the movable bar 28 is biased in a direction away from the fixed bar 27 in the free state.

  In the second guide rail portion 115, the lengths of the flange portions 117 and 118 on the cross section are substantially equal. Therefore, as shown in FIGS. 2A and 2B, the guided portion 103 of the first seal portion 14a and the guided portion 111 of the second seal portion 14b passing through the non-seal filling region 101 are both The flanges 117 and 118 of the first guide rail 113 are maintained at the non-seal position (first non-seal position).

  The guide means also moves the movable bar 28 of the second seal portion 14b in the seal filling region 100 between the seal position (position shown on the right side of FIG. 2B) and the second non-seal position (position shown in FIG. 9). The second guide means or the second guide rail 121 is provided as the second guide means for selectively setting one of them. In the embodiment, the second guide rail 121 has a substantially L-shaped cross section having a horizontal base portion 122 and a vertical portion 123 extending upward from the base portion 122 as shown in FIG. It is arranged below the bar driving rod 29 inside 114 (Z-axis side).

  As shown in FIG. 4, in the embodiment, the second guide rail 121 is divided into two parts, and is composed of two guide rail parts 122, and each guide rail part 122 is an elevating mechanism 123 shown in FIG. 5. It is made to go up and down by. The elevating mechanism 123 has two elevating guide parts 124 and an operating mechanism 125. As shown in FIGS. 7 and 9, the elevation guide unit 124 has a vertical guide shaft 127 fixed to the fixed base 126 below the rotating plate 16. Preferably, the vertical guide shaft 127 has a polygonal cross section (in the embodiment, a hexagon). The vertical guide shaft 127 is mounted on the vertical guide shaft 127 and supports a lifting sleeve 128 that moves up and down along the vertical guide shaft 127. The elevating sleeve 128 is fixed to the guide rail portion 122 using appropriate fixing means (for example, a bolt and nut mechanism, welding).

  As shown in FIGS. 6 and 8, the operating mechanism 125 has a horizontal shaft 130 that extends in the tangential direction of the circumference around the axis Z. Both ends of the shaft 130 are fixed to the base 126 (see FIG. 2) via brackets (not shown) so as not to rotate or to rotate, and support the cam 131 to be rotatable. The cam 131 has a first cam surface 132 formed on the outer circumferential surface extending in the circumferential direction about the shaft 130 at a distance r1 from the center of the shaft 130, and a distance r2 (<r1) from the center of the shaft 130. The second cam surface 133 formed continuously is provided, and the distance from the shaft 130 to the outer peripheral surface is about the outer peripheral surface portion 134 from the first cam surface 132 to the second cam surface 133. It gradually changes from r1 to r2. The cam 131 is also connected to an operation lever 135, and the operation lever 135 is swung between a first position (position shown in FIG. 6) and a second position (position shown in FIG. 8) about the shaft 130. By moving, the first cam surface 132 rotates between a position where the first cam surface 132 is directed upward and a position where the second cam surface 133 is directed upward. The operating mechanism 125 also has an engagement portion 136 that is fixed to the second guide rail 121 above the cam 131 and selectively engages with the first cam surface 132 and the second cam surface 132.

  The distance r1 from the shaft 130 to the first cam surface 132 is perpendicular to the second guide rail 121 as shown in FIG. 7 in a state where the first cam surface 132 is engaged with the engaging portion 136. The upper end surface of the part advances to the upper part of the space part 120, and as a result, the second guided part 111 of the movable bar 28 in the seal filling region 100 is urged upward, and the movable bar 28 is held at the seal position. It is decided to. On the other hand, as shown in FIG. 9, the distance r2 from the shaft 130 to the second cam surface 133 is such that the upper end surface of the vertical portion of the second guide rail 121 recedes below the space portion 120, and as a result, the seal filling The movable bar 28 in the region 100 is determined to move to the second non-seal position by its own weight in a free state. Therefore, when the operation lever 135 moves between the position shown in FIG. 6 and the position shown in FIG. 8, the second guide rail 121 moves up and down between the raised position and the lowered position, and the seal filling area 100 is moved. pass

  According to the switching mechanism 110 configured as described above, the first cam surface 132 of the cam 131 faces the engaging portion 136 in the operating state where the operation lever 135 is set to the vertical position as shown in FIG. Thus, the second guide rail 121 is set at the raised position. As a result, the second guided portion 111 of the movable bar 28 of the second seal portion 14b passing through the seal filling region 100 is guided by the second guide rail 121, and the movable bar 28 is held at the seal position. . On the other hand, in the non-operating state where the operation lever 135 is set to the horizontal position as shown in FIG. 8, the second cam surface 133 of the cam 131 is engaged with the engaging portion 136 and the second guide surface is engaged. The rail 121 is set at the lowered position. As a result, the second guided portion 111 of the movable bar 28 enters the space 120 based on its own weight, and the second unsealed portion of the movable bar 28 of the second seal portion 14b that passes through the seal filling region 100. Held in position. On the other hand, the first guided portion 103 of the movable bar 28 of the first seal portion 14 a passing through the seal filling region 100 is always the first guide regardless of the positions of the operation lever 135 and the first guide rail 121. The seal position is maintained by being guided by the rail 113.

  Therefore, when the operation lever 135 is in the activated state, the packaging material 12 that passes through the seal filling region 100 is sandwiched between the first and second seal portions 14a and 14b, and the width seal portion 43 is spaced at a predetermined interval L. A single pitch bag portion 44 is formed between the adjacent width seal portions 43. In addition, when the operation lever 135 is in an inoperative state, the packaging material 12 that passes through the seal filling region 100 is sandwiched only by the first seal portion 14a and has a width L ′ (= 2L) with a double interval L ′ (= 2L). A seal portion 43 ′ is formed, and a double pitch bag portion 44 ′ is formed between adjacent width seal portions 43 ′. At this time, in the double-pitch bag portion 44 ′, the central portion in the feed direction is not sandwiched between bars (fixed bar and movable bar), so that the filling 47 filled from the adjacent chute 15 as shown in the figure. However, it moves freely to the center part which is not pinched by the 2nd seal part 14b. Therefore, the filling amount of the filling 47 that can be accommodated in the double pitch bag portion 44 ′ is considerably larger than twice the filling amount of the filling 47 filled in the single pitch bag portion 44. Further, without turning on / off the electric heater built in the second fixed bar 27, the operation lever 135 is simply operated to switch between the single pitch filling method and the double pitch filling method. Can be switched. In addition, as shown in FIG. 12, when the filling device includes a cutter device 20 that cuts or perforates the width seal portion, according to the interval between the width seal portions in the single pitch filling method and the double pitch filling method. Naturally, it should be replaced with an appropriate cutter device.

  In the above-described embodiment, the movable bar of the second seal portion in the seal filling region is switched between the seal position and the second non-seal position using the second guide rail and its lifting mechanism. The use of the second guide rail and the lifting mechanism is not essential in the present invention, and the present invention includes other various forms.

  Specifically, as shown in FIGS. 10 and 11, the guided portion 140 is detachably attached to the bar driving rod 29 of the movable bar 28 of the first seal portion 14a and the second seal portion 14b. At the time of double pitch filling, the guided portion 140 of the second seal portion 14 is removed, so that the movable bar 28 of the second seal portion 14b passing through the seal filling region 100 is moved to the second non-sealing position by its own weight. You may make it hold | maintain. In addition, for the second seal portion 14b, the front portion 28b including the seal pressing surface 28a may be detachable, and the front portion 28b may be removed at the time of double pitch filling.

  Further, in the above description, the filling and packaging machine that can switch the interval between the width seal portions to L and 2L has been described. However, the interval between the width seals can be changed to L and 3L, 4L,.・ Switching to (integer multiple) is also possible.

  Furthermore, various known lifting mechanisms (for example, jack bolts, screw jacks, pneumatic or hydraulic cylinders) can be used as a mechanism for lifting and lowering the second guide rail 121 in the switching mechanism 110 described above.

The fragmentary perspective view of the filling packaging machine used for the filling packaging machine which concerns on this invention. The fragmentary sectional view of the filling packaging machine shown in FIG. The top view of a 1st guide rail. The top view of a 2nd guide rail. The top view of a raising / lowering mechanism. Sectional drawing of an action | operation mechanism. Sectional drawing of a raising / lowering mechanism. Sectional drawing of an action | operation mechanism. Cross section of lifting mechanism Sectional drawing of other embodiment. Sectional drawing of other embodiment. The front view of a filling packaging machine. Sectional drawing of a filling and packaging machine. The partial perspective view of a filling packaging machine. The figure explaining a double pitch filling system. The figure explaining a single pitch filling system. The figure explaining the conventional double pitch filling system.

Explanation of symbols

10 ': Filling and packaging machine, 100: Seal filling area, 101: Non-seal filling area, 103: First guided part, 110: Switching mechanism, 111: Second guided part, 113: First guide rail 121: second guide rail, 123: lifting mechanism, 125: operating mechanism.

Claims (6)

A plurality of heat sealing means (14) arranged annularly around the axis (Z), and a rotating plate (16) rotatably provided around the axis (Z) together with the plurality of heat sealing means (14). ) And the continuously supplied belt-shaped packaging material (12) is folded, and then the folded packaging material (12) is a first sealing bar (14) included in the heat sealing means (14). 27) and the second seal bar (28), the packaging material (12) is heat-sealed in the width direction at a predetermined interval in the longitudinal direction of the packaging material, and the bag portion ( 44) and filling the bag portion (44) with a filling (47),
The first seal bar (27) and the second seal bar (28) can sandwich the packaging material (12) every N pieces (N: integer) of the plurality of heat seal means (14). A filling and packaging machine comprising switching means (110) for switching between an operating state and a non-operating state in which the packaging material cannot be clamped. In each of the plurality of heat seal means (14), the second seal bar (28) is in an approaching state in which the second seal bar (28) approaches the first seal bar (27) and is separated from the first seal bar (28). Supported to move between states,
The filling and packaging machine according to claim 1, wherein the switching means (110) includes means (120, 121) for holding the first seal bar (27) in the separated state. The belt-like heat-adhesive packaging material (12) that is continuously supplied is folded along the central line extending in the longitudinal direction of the packaging material (12) to overlap the packaging material pieces located on both sides of the central line. In order to form a bag portion (44) by sealing the overlapped packaging material in the width direction at a predetermined interval in the longitudinal direction, and filling the bag portion (44) with a filling material (47) ,
A rotating plate (16) supported rotatably about a vertical axis (Z);
A plurality of heat seal means (14) arranged at equal intervals with a predetermined interval (L) along a circumference centered on the axis (Z), each heat seal means (14), A fixed seal bar (27) fixed to the rotating plate (16) and a radial direction centered on the axis (Z) are arranged outside the fixed seal bar (27), and are arranged in the circumferential direction. In the defined seal filling region (100), the rotating plate (16) is rotated while approaching the fixed seal bar (27) and sandwiching and sealing the packaging material (12) together with the fixed seal bar (27). Based on the sealing position for transporting the packaging material (12) along the circumference based on the first, spaced from the fixed seal bar (27) in the non-seal filling area (101) defined in the circumferential direction. Non-seal position To take, the rotating plate with a plurality of heat sealing means comprising linked movable seal bar (16) (28) (14),
The seal filling region is arranged at equal intervals along the circumference centered on the axis (Z) with the predetermined interval (L) and moves along the circumference together with the rotary plate (16). (100) In a filling and packaging machine provided with a plurality of filling chutes (15) located between the adjacent heat sealing means (14) and positioned between the packaging material pieces,
The plurality of movable seal bars (28) include a first movable seal bar (28) and a second movable seal bar (28) alternately arranged on the circumference,
The above filling and packaging machine
First means for holding the first movable seal bar (28) moving in the seal filling area (100) with the rotation of the rotary plate (16) in the seal position;
An operating state in which the second movable seal bar (28) moving in the seal filling area (100) with the rotation of the rotating plate (16) is set at the seal position, and the seal filling area with the rotation of the rotating plate. The second movable seal bar (28) that moves (100) has a second means (121) that can be switched between a non-actuated state that sets a second non-seal position. Filling and packing machine. The first means includes
A guided portion (103) provided on the first movable seal bar (28);
The seal filling region (100) has a first guide portion (113) for guiding the guided portion (103) and holding the first movable seal bar (28) at the seal position. The filling and packaging machine according to claim 3. The second movable seal bar (28) is connected to the rotating plate (16) so as to move in a free state from the seal position toward the second non-seal position,
The second means is:
A position for engaging the second movable seal bar (28) in the operating state to set the second movable seal bar (28) to the seal position, and a second movable seal bar in the non-operating state. 5. The filling and packaging machine according to claim 3, further comprising a second guide portion (121) that moves between a position that is released to the free state and is set to the non-seal position. The second means is:
Biasing means for biasing the second movable seal bar (28) from the seal position toward the second non-seal position;
The second movable seal bar is engaged with the second movable seal bar (27) in the operating state to set the second movable seal bar (28) at the seal position and in the non-operated state. The filling and packaging machine according to claim 3, further comprising means (103) for moving between (28) and a state of moving the seal position from the seal position to the non-seal position based on the biasing force of the biasing means. .

Images