JP5763332B2 - Packaging machine - Google Patents

Description

  The present invention relates to a packaging machine that wraps an article with a continuously supplied packaging material.

  In a packaging line for packaging articles such as foods and daily necessities, articles are successively supplied to a packaging machine and individually wrapped with a packaging material such as a film. Specifically, a packaging material such as a film is continuously supplied to the packaging machine as the articles are sequentially supplied, and the bag is formed into a cylindrical shape. In the process in which the packaging material is formed into a cylindrical shape, articles are sequentially supplied, and then both side edges of the packaging material are center-sealed. Then, end sealing and cutting are performed in the width direction of the packaging material at predetermined pitches, and each article is packaged.

  By the way, when a plurality of roll breads or the like are packaged together, there is an aspect in which a once opened seal is closed by a bundling member such as a closure to enable re-sealing. In such an embodiment, the article is brought close to one end side in the longitudinal direction of the packaging material, and the packaging material on the other end side is provided with an extended portion serving as a binding margin. At the time of end sealing, an extended portion of the packaging material that is closed by the bundling member is pressed from above to remove excess air inside (see Patent Document 1).

Japanese Patent No. 4392525

  However, when packaging an article having a certain height such as bread, it is difficult to effectively evacuate the packaging material without crushing the article.

  The present invention has been made in view of the above problems, and a degassing means capable of effectively venting air in a packaging material without crushing an article when packaging the packaging material with an extended portion. An object is to provide a packaging machine provided.

(1) The present invention has an upstream traveling surface that travels from upstream to downstream, and upstream in which an article supplied from a previous process is wrapped and wrapped in a continuously supplied and packaged packaging material. Side transport means and a downstream travel surface that travels from upstream to downstream following the upstream travel surface, and takes over the article transported by the upstream transport means to the downstream travel surface. And a pair of upper and lower sealing means for sandwiching and sealing the packaging material from above and below between the upstream side conveying means and the downstream side conveying means. The side running surface is divided into a plurality of gaps in the running direction in the vicinity of the sealing means, and further includes a lower pressing portion that can be accommodated in the gap and can be moved up and down, and above the lower pressing portion. Can be moved up and down Becomes a was upper pressing portion, said lower pressing portion and the upper pressing portion is the sandwich said packaging material in the vicinity of half the height of the article the sealing means is moved up and down at the timing which seals It is a packaging machine provided with the deaeration means which vents the air in a packaging material.

  According to the present invention, the deaeration means that moves up and down in synchronization with the timing of the sealing means that sandwiches and seals the packaging material vertically sandwiches the packaging material. Therefore, by setting the packaging material to be sandwiched around half the height of the article, air inside the packaging material can be effectively removed and abnormal tension acts on either the upper or lower side of the packaging material. This can be avoided and does not crush the article when venting air in the packaging material. Further, since the deaeration means is not provided with the sealing means between the upstream conveyance means and the downstream conveyance means, and is provided in the area of the downstream conveyance means, the deaeration means is provided between the upstream conveyance means and the downstream conveyance means. Compared with the case where it is provided, it is not necessary to widen the distance between the upstream conveying means and the downstream conveying means. By setting the interval as narrow as possible, the article can be handed over from the upstream conveying means to the downstream conveying means with a smooth flow.

  (2) In the present invention, the upstream running surface and the downstream running surface are separated when the upper and lower sealing means are close to each other, and the upper and lower sealing means are separated from each other. It is a packaging machine as described in said (1) characterized by adjoining to a case.

  (3) The present invention is also characterized by comprising a first interlocking mechanism that interlocks an operation in which the upstream traveling surface and the downstream traveling surface approach or separate from each other with an operation in which the sealing means moves up and down. It is a packaging machine as described in said (2).

  (4) The present invention is also characterized in that the first interlocking mechanism includes a cam floor that moves up and down integrally with the sealing means, a guide member that is provided in the upstream-side conveying means and has a groove that guides the cam floor. The packaging machine according to (3) above, characterized by comprising:

  (5) The present invention also includes a second interlocking mechanism that interlocks an operation in which the lower pressing portion moves up and down with an operation in which the sealing means moves up and down. A packaging machine according to any one of the above.

  (6) Further, in the present invention, the lower pressing portion has a length in a direction orthogonal to the traveling direction, and both longitudinal ends thereof are provided so as to protrude to the side of the downstream traveling surface. The interlocking mechanism of No. 2 is the packaging machine according to the above (5), wherein both ends of the lower pressing portion are pushed up from below.

  (7) In the present invention, the lower deaeration unit is accommodated in a state flush with the downstream running surface, according to any one of (1) to (6) above. It is a packaging machine.

  (8) The present invention is also characterized in that the pair of sealing means moves downstream with the packaging material in a state where the packaging material is sandwiched, and then returns to the upstream after being separated from each other. The packaging machine according to any one of 1) to (7).

  According to the packaging machine described in the above (1) to (8) of the present invention, when the packaging material is packaged with the extended portion, the air in the packaging material is effectively removed without crushing the article.

It is a front view which shows the outline of the packaging machine which concerns on this invention. It is the figure which looked at the end seal apparatus in the packaging machine shown in FIG. 1 in the direction of arrow II. It is a figure which shows the cam groove and cam floor in the end seal apparatus shown in FIG. It is a perspective view which shows the sealer and each part of the circumference | surroundings in the end seal apparatus shown in FIG. FIG. 4 is a partial cross-sectional view of the end seal device shown in FIG. 2 as viewed in the direction of an arrow IVA, illustrating the operation of the box motion of the sealer. It is a figure explaining the motion of the 1st interlocking mechanism shown in FIG. It is a figure explaining the motion of the 1st interlocking mechanism shown in FIG. 4, and shows the continuation of the motion shown in FIG. It is a figure explaining the motion of the 2nd interlocking mechanism shown in FIG. It is a figure explaining the motion of the 2nd interlocking mechanism shown in FIG. 4, and shows the continuation of the motion shown in FIG. It is a figure explaining a motion of the packaging machine shown in FIG.

  Hereinafter, the packaging machine according to the present invention will be described in detail with reference to the drawings.

  First, the structure of the packaging machine 10 is demonstrated using FIGS. FIG. 1 is a front view showing an outline of the packaging machine 10. FIG. 2 is a view of the end seal device 13 viewed in the direction of arrow II in FIG. FIG. 3 is a view showing the cam groove 71 a and the cam floors 72 and 73 in the end seal device 13. FIG. 4 is a perspective view showing the sealer 38 and its surrounding parts.

  In addition, please refer to FIGS. 5-10 as needed. In each of the drawings, illustration of components and the like that are not necessary for the description is omitted as appropriate for simplification of the drawings. Furthermore, the directions in the following description refer to the directions in the drawings unless otherwise specified.

  The packaging machine 10 shown in FIG. 1 is a so-called horizontal pillow packaging machine, and uses the packaging material YA1 such as a resin film that is continuously supplied to direct the bread bread XA1 sequentially supplied from the previous process from upstream to downstream. Wrap each pack while transporting. In FIG. 1, the left side is the upstream and the right side is the downstream. In addition, although this embodiment demonstrates to the case where the bread bread XA1 is packaged as an example, the packaging machine of this invention can be used in order to package various articles | goods, such as other breads.

(Wrapping machine)
The packaging machine 10 includes a belt conveyor 11 that is an upstream conveying means disposed on the upstream side, a belt conveyor 12 that is a downstream conveying means subsequent to the belt conveyor 11, and an upstream side of the belt conveyor 11 for packaging. A center seal device (not shown) for center-sealing the material YA1, an end-sealing device 13 for end-sealing and cutting the packaging material YA1 between the belt conveyors 11 and 12, and a deaeration device for removing air from the packaging material YA1 14, the operation of the product presser 15 that presses the bread bread XA1 with a weak force when the packaging material YA1 is end-sealed and cut, and the operations of the belt conveyors 11 and 12 and the deaerator 14 are changed to the operation of the end seal device 13. An interlocking mechanism 16 (see FIG. 4) for interlocking is provided. Hereinafter, each component of the packaging machine 10 will be described. The operation of each component is comprehensively controlled by a control device (not shown).

  (Center Seal Device) The center seal device (not shown) is disposed on the upstream side of the belt conveyor 11. This center seal device forms a cylindrical bag material YA1 continuously supplied, and then center-seals both side edges in the transport direction.

  (Belt Conveyor) The belt conveyor 11 includes an annular belt 17 that travels from upstream to downstream, one or more rollers (not shown) disposed on the upstream side, and rollers 18 disposed on the downstream side. 19, rollers 20 and 21 for adjusting the length of the belt, driving rollers (not shown) connected to a motor (not shown), and a fixed frame and a moving frame (not shown) for supporting each component. And so on.

  The belt 17 is connected endlessly with an upstream traveling surface 17a that travels from upstream to downstream and a return surface 17b that is disposed along the lower side of the upstream traveling surface 17a and travels from downstream to upstream. Has been. The belt 17 conveys the bread bread XA1 wrapped in the packaging material YA1 formed in a cylindrical shape on the upstream running surface 17a. The belt 17 travels by rotation of a driving roller (not shown).

  The rollers 18 to 20 are rotatably attached to a moving frame (not shown), and can move forward and backward in the traveling direction of the upstream traveling surface 17a by reciprocating movement of the moving frame. That is, when the moving frame moves in the downstream direction, the upstream traveling surface 17a is extended in the downstream direction, but at this time, the interval between the roller 20 and the roller 21 supported by the fixed frame is reduced, The extra length of the belt 17 stored during this time is paid out. On the other hand, when the moving frame moves in the upstream direction, the upstream side running surface 17a is shortened, and the extra length of the belt 17 generated thereby is absorbed by increasing the distance between the roller 20 and the roller 21.

  According to the above rollers 18 to 21 and a roller (not shown), the belt 17 extends horizontally from the upper part of the roller (not shown) arranged on the upstream side toward the upper part of the roller 18 arranged on the downstream side. The belt 17 extends obliquely downward from the side of the roller 18 toward the side of the roller 19. Next, the belt 17 extends horizontally from the lower part of the roller 19 toward the upper part of the roller 20. Further, the belt 17 extends horizontally from the lower part of the roller 20 toward the upper part of the roller 21. Further, the belt 17 extends horizontally from the lower part of the roller 21 toward the lower part of a roller (not shown) arranged on the upstream side.

  The belt conveyor 12 includes an annular belt 23 that travels from upstream to downstream, rollers 24 to 29 disposed on the upstream side, rollers 30 and 31 that adjust the length of the belt 23, and a motor (not shown). A driving roller 32 connected to the roller 32, a roller 33 provided in the vicinity of the roller 32, a roller 34 disposed on the downstream side, a fixed frame and a moving frame (not shown) for supporting each component, , Etc.

  The belt 23 is connected endlessly with a downstream traveling surface 23a that travels from upstream to downstream and a return surface 23b that is disposed along the lower side of the downstream traveling surface 23a and travels from downstream to upstream. Has been. In this belt 23, the bread bread XA1 taken over from the belt conveyor 11 is placed on the downstream running surface 23a. The belt 23 travels by the rotation of the roller 32.

  The rollers 24 to 30 are rotatably attached to a moving frame (not shown), and can move forward and backward in the running direction of the downstream side running surface 23a by the reciprocating movement of the moving frame. The rollers 24, 26, and 28 are arranged in the vicinity of the end seal device 13 at intervals in the traveling direction along the downstream traveling surface 23 a. The roller 25 is disposed below the rollers 24 and 26 between the rollers 24 and 26. The roller 25 causes the belt 23 to detour downward with the rollers 24 and 26 as fulcrums. The roller 27 is disposed below the rollers 26 and 28 between the rollers 26 and 28. The roller 27 causes the belt 23 to detour downward with the rollers 26 and 28 as fulcrums. In this way, the rollers 25 and 27 divide the downstream running surface 23a into a plurality of pieces in the running direction.

  When the moving frame moves in the upstream direction, the downstream running surface 23a is extended in the upstream direction. At this time, the distance between the roller 30 and the roller 31 supported by the fixed frame is reduced, The extra length of the accumulated belt 23 is paid out. On the other hand, when the moving frame moves in the downstream direction, the downstream running surface 23a is shortened, and the extra length of the belt 23 generated thereby is absorbed by increasing the distance between the roller 30 and the roller 31.

  The roller 32 is rotatably attached to the fixed frame. The roller 32 is rotated by the supply of rotational power from a motor (not shown). The roller 33 is rotatably attached to the fixed frame. The roller 33 is provided for the purpose of increasing the winding angle of the belt 23 around the roller 32. The roller 34 is rotatably attached to the fixed frame. The roller 34 folds the belt 23 from the downstream running surface 23a to the return surface 23b. Each of the rollers 24 to 31, 33 and 34 other than the roller 32 rotates as the belt 23 travels.

  According to the rollers 24 to 34 described above, the belt 23 extends horizontally from the upper part of the roller 28 disposed on the upstream side toward the upper part of the roller 34 disposed on the downstream side. During this time, the belt 23 is detoured downward by the roller 27 with the rollers 26 and 28 as fulcrums, and is detoured downward by the roller 25 with the rollers 24 and 26 as fulcrums.

  The belt 23 extends obliquely downward from the lower part of the roller 34 toward the lower part of the roller 32. Further, the belt 23 extends obliquely upward from the side portion of the roller 32 to the roller 28 disposed on the upstream side. During this time, the belt 23 is arranged in a zigzag manner by the rollers 29 to 31 and 33.

  (End seal device) The end seal device 13 shown in FIGS. 1 and 2 is disposed between the belt conveyors 11 and 12 in a fixed position, and is used to feed the packaging material YA1 formed in a cylindrical shape into a running surface. End seal in the width direction of 17a, 23a and cut. The end seal device 13 includes sealers 37 and 38 arranged in the width direction so as to face the upper and lower sides of the packaging material YA1, holding units 39 and 40 that hold the sealers 37 and 38, and a holding unit 39. A pair of rotating discs 41 that support the sealer 37 via the horizontal axis and rotate around the horizontal axis, and a pair of rotary discs 42 that support the sealer 38 via the holding unit 40 and rotate around the horizontal axis. A pair of side plates 71 disposed on the sides of the rotary disks 41 and 42, cam floors 72 and 73 provided at the ends of the shafts of the holding portions 39 and 40, and the like are provided.

  The upper sealer 37 is lifted and lowered by a slide bar (not shown) spanned between the holding portion 39 and the holding portion 40 while maintaining a downward posture. The lower sealer 38 is moved up and down by the slide bar while maintaining an upward posture. The lower sealer 38 is lowered when the upper sealer 37 is raised, and is raised when the upper sealer 37 is lowered. When the sealer 37 reaches the lowest position and the sealer 38 reaches the highest position, the sealers 37 and 38 end-seal and cut the packaging material YA1 vertically. Thus, the sealers 37 and 38 function as sealing means that sandwich and seal the packaging material YA1.

  The holding part 39 holds the upper part of the sealer 37. The holding portion 39 is supported at an eccentric position of the pair of rotating disks 41, and revolves around the rotating shaft 41 b of the rotating disk 41 while maintaining the posture by the rotation of the rotating disks 41. To go up and down. The holding unit 40 holds the lower part of the sealer 38. The holding portion 40 is also supported at an eccentric position of the pair of rotating disks 42, and the rotating disk 42 rotates around the rotating shaft 42b while maintaining the posture by rotating around the rotating shaft 42b. Ascend and descend by revolving.

  The pair of rotating disks 41 are attached to a machine frame (not shown) so as to be rotatable about a horizontal axis so that the plate surfaces face each other. The pair of rotating disks 41 are connected to a motor (not shown), and rotate around a horizontal axis by the power of the motor. The pair of rotating disks 41 are moved up and down by rotating around the horizontal axis and revolving the sealer 37 around the horizontal axis.

  The pair of rotating disks 42 are attached to a machine frame (not shown) so as to be rotatable about a horizontal axis so that the plate surfaces face each other. The holding portions 39 and 40 are connected to the rotating disks 41 and 42 via sliders 39a and 40a. That is, sliders 39a and 40a that are movable along the grooves 41a and 42a are incorporated in notches 41a and 42a formed in the rotating disks 41 and 42 from the outer peripheral edge toward the center. The sliders 39a and 40a are formed with through holes (reference numerals omitted) through which the shafts of the holding portions 39 and 40 are rotatably inserted, and tip portions of the shafts of the holding portions 39 and 40 inserted through the through holes. Are attached with cam floors 72 and 73. The cam floors 72 and 73 are respectively guided to upper and lower cam grooves 71a formed in the side plate 71 when the rotary disks 41 and 42 rotate. As shown in FIG. 3, the cam groove 71a is an annular groove having a straight portion in part, and is formed vertically symmetrical so that the straight portions are adjacent to each other. Thereby, the sealers 37 and 38 can hold | maintain the state which pinched | interposed packaging material YA1 in the linear part of the cam groove 71a.

  (Deaeration Device) The deaeration device 14 shown in FIGS. 1 and 4 includes a lower deaeration device 44 and an upper deaeration device 45. The lower deaeration device 44 and the upper deaeration device 45 cooperate with each other to remove the air in the packaging material YA1.

  The lower deaeration device 44 is provided along a gap in the downstream running surface 23a divided into a plurality (see FIG. 10B), and has a long lower pressing portion 46 that pushes the packaging material YA1 from below. A sponge sheet 47 that covers the upper surface of the lower pressing portion 46 and a fixed support member 48 that supports both ends of the lower pressing portion 46 from below are provided.

  The lower pressing portion 46 is disposed flush with the downstream running surface 23a and functions as a transition member that bridges between the gaps. The lower push portion 46 can be moved only in the vertical direction by a guide member (not shown). The lower push portion 46 is pushed up from below by the interlocking mechanism 16 and rises. The sponge sheet 47 is interposed between the lower pressing portion 46 and the packaging material YA1. The sponge sheet 47 functions as a cushion and prevents the packaging material YA1 from being scratched by the lower pressing portion 46. The fixed support member 48 is fixed to a moving frame (not shown) constituting the belt conveyor 12 and is attached so as to be able to advance and retract in the traveling direction of the downstream traveling surface 23a. The fixed support member 48 advances and retreats integrally with the rollers 24 to 30.

  The upper deaeration device 45 includes a sponge block 49 that functions as an upper pressing portion that pushes the packaging material YA1 from above, a cylinder 50 that raises and lowers the sponge block 49, and the like. The sponge block 49 is lowered when the lower push portion 46 is raised, and is raised when the lower push portion 46 is lowered. The upper deaeration device 45 may be fixed without being lifted or lowered.

  In the above deaeration device 14, when the end seal device 13 end seals and cuts the packaging material YA1, the lower pressing portion 46 reaches the uppermost position, the sponge block 49 reaches the lowermost position, and the packaging material YA1. Is squeezed up and down to release air from the packaging material YA1. Note that the position where the lower pressing portion 46 and the sponge block 49 sandwich the packaging material YA1 can be adjusted by the height of the bread bread XA1 that is the product.

  (Product Presser Device) A product presser device 15 shown in FIG. 1 is provided on the downstream side of the deaerator 14 above the belt conveyor 12. The product presser 15 includes a sponge block 52 that presses the bread bread XA1 from above with a weak force, a cylinder 53 that moves the sponge block 52 up and down, and the like. The sponge block 52 descends in conjunction with the lowering of the sponge block 49 of the deaerator 14 and rises in conjunction with the rise of the sponge block 49.

  When the end seal device 13 end-seals and cuts the packaging material YA1, the product retainer 15 described above degass the sponge block 52 reaching the lowest position and presses the bread bread XA1 from above with a weak force. Further, a rear presser device 75 is disposed on the downstream side of the product presser device 15. The rear presser device 75 includes a support arm 75a that can rotate in the travel direction on the downstream travel surface 23a, a contact portion 75b provided at the tip of the support arm 75a, and the like. The base end portion serving as the rotation center of the support arm 75a is located at a sufficient height so as not to interfere with the bread bread XA1 serving as a product, and is approximately 90 ° counterclockwise from the vertical state (see FIG. 10A) (FIG. 10). It can be rotated within the range of (B). The rear presser device 75 performs deaeration in cooperation with the deaeration device 14 and the product presser device 15. That is, the support arm 75a is rotated clockwise in accordance with the operation timing of the deaeration device 14 and the product presser device 15, and the contact portion 75b is disposed so as to contact the rear surface of the bread loaf XA1 that is the product. Deaerate. When the deaeration is completed, the support arm 75a is rotated counterclockwise to prepare for the next deaeration. Since the contact part 75b is formed of a soft material such as sponge, the bread bread XA1 and the packaging material YA1 that are products are not damaged.

  (Interlocking Mechanism) The interlocking mechanism 16 shown in FIG. 4 is a first interlocking mechanism 55 that interlocks the operation in which the upstream traveling surface 17a expands and contracts and the operation in which the downstream traveling surface 23a expands and contracts with the operation in which the sealer 38 moves up and down. And a second interlocking mechanism 56 that interlocks the movement of the lower pusher 46 with the movement of the sealer 38.

  The first interlocking mechanism 55 is formed with an upstream plate 57 attached to the holding portion 40 that holds the sealer 38, a cam floor 58 fixed to the upstream plate 57, and a groove 59 a that guides the cam floor 58. The guide member 59, the downstream plate 60 attached to the holding portion 40 that holds the sealer 38, the cam floor 61 fixed to the downstream plate 59, and the guide 62 in which the groove 62 a for guiding the cam floor 61 is formed. And a member 62.

  The upstream plate 57 is provided on each side of the upstream running surface 17a in the width direction. The cam floor 58 is provided on each side of the upstream traveling surface 17a in the width direction corresponding to each upstream plate 57. These cam floors 58 revolve around the horizontal axis by the revolution of the holding portion 40 around the horizontal axis.

  The guide members 59 are provided in the width direction of the upstream running surface 17a corresponding to the cam floors 58, respectively. Each guide member 59 is fixed to a moving frame (not shown) that constitutes the belt conveyor 11, and is movable forward and backward in the traveling direction of the upstream traveling surface 17a. Therefore, the guide member 59 advances and retreats integrally with the rollers 18 to 20. The groove 59a formed in the guide member 59 has a bent shape. The guide member 59 advances and retreats together with the rollers 18 to 20 in the traveling direction of the upstream traveling surface 17a by the revolution of the cam floor 58 around the horizontal axis.

  The downstream plates 60 are respectively provided on both sides in the width direction of the downstream running surface 23a. The cam floors 61 are respectively provided on both sides in the width direction of the downstream running surface 23 a corresponding to the respective downstream plates 60. These cam floors 61 revolve around the horizontal axis by the revolution of the holding portion 40 around the horizontal axis.

  The guide members 62 are provided in the width direction of the downstream running surface 23a corresponding to the cam floors 61, respectively. Each guide member 62 is fixed to a moving frame (not shown) that constitutes the belt conveyor 12, and is movable forward and backward in the traveling direction of the downstream traveling surface 23a. Therefore, the guide member 62 advances and retreats integrally with the rollers 24-30. The groove 62a formed in the guide member 62 has a linear shape extending in the vertical direction. The guide member 62 advances and retreats together with the rollers 24 to 30 in the traveling direction of the downstream traveling surface 23 a by the revolution of the cam floor 61 around the horizontal axis.

  The second interlocking mechanism 56 includes a plate 63 attached to the holding unit 40 that holds the lower sealer 38, and an elevating support member 64 fixed to the plate 63.

  The plates 63 are provided on both sides in the width direction of the downstream running surface 23a. The elevating support members 64 are respectively provided on both sides in the width direction of the downstream running surface 23 a corresponding to each plate 63. These elevating support members 64 are formed with notches 64a for hooking the end portions of the lower push portions 46. The elevating support member 64 revolves around the horizontal axis by the revolution of the holding unit 40 around the horizontal axis. The elevating support member 64 raises the lower pressing portion 46 supported by the fixed support member 48 by pushing it up from below.

  According to the interlocking mechanism 16 described above, the end seal device 13 includes the operation of extending and retracting the upstream travel surface 17a, the operation of expanding and contracting the downstream travel surface 23a, and the operation of moving the lower push portion 46 of the deaeration device 14 up and down. The sealer 38 is moved up and down. Thereby, the sealing device 13 occupies the center of the packaging machine 10.

  Next, the effect | action of the packaging machine 10 is demonstrated based on FIGS. FIG. 5 is a partial cross-sectional view of the end seal device 13 as viewed in the direction of IVA shown in FIG. 2, and is a view for explaining the operation of the box motion of the sealers 37 and 38. Specifically, FIG. 5 (A) shows a state in which the packaging material YA1 is being sandwiched by the sealers 37 and 38. In this state, the packaging material YA1 moves downstream with the packaging material YA1 for a predetermined time (or distance). FIG. 5B shows a state where the sandwiching of the packaging material YA1 by the sealers 37 and 38 is released. FIG. 5C shows a state where the sealers 37 and 38 are farthest from each other. FIG. 5D shows a state immediately before the packaging material YA1 is sandwiched by the sealers 37 and 38. FIG.

  FIG. 6 is a diagram for explaining the movement of the first interlocking mechanism 55. 6A and 6B correspond to FIGS. 5A and 5B, respectively. FIG. 7 is a diagram for explaining the movement of the first interlocking mechanism 55, and shows the continuation of the movement shown in FIG. FIGS. 7A and 7B correspond to FIGS. 5C and 5D, respectively. 6 and 7, the illustration of the state in which the belt 23 bypasses downward and divides the downstream running surface 23a into a plurality of parts is omitted.

  FIG. 8 is a diagram for explaining the movement of the second interlocking mechanism 56. FIGS. 8A and 8B correspond to FIGS. 5A and 5B, respectively. 89 is a diagram for explaining the movement of the second interlocking mechanism 56, and shows the continuation of the movement shown in FIG. FIGS. 9A and 9B correspond to FIGS. 5C and 5D, respectively. FIG. 10 is a diagram for explaining the movement of the packaging machine 10. 5 to 9, as in FIG. 1, the left side is the upstream side and the right side is the downstream side.

  (End Seal Device) The end seal device 13 repeatedly operates in the order of FIG. 5 (A) → FIG. 5 (B) → FIG. 5 (C) → FIG. 5 (D) → FIG. Specifically, the pair of rotating disks 41 is rotated around the horizontal axis by the power of a motor (not shown). The rotating disk 41 rotates so that the lower half advances from the upstream side to the downstream side and the upper half returns from the downstream side to the upstream side.

  As the pair of rotating disks 41 rotate around the horizontal axis, the sealer 37 revolves around the horizontal axis. The sealer 37 advances from the upstream side to the downstream side from the horizontal axis that is the center of revolution (see FIG. 5 (D) → FIG. 5 (A) → FIG. 5 (B)), and above the horizontal axis, It revolves in the direction returning from the downstream side to the upstream side (see FIG. 5 (B) → FIG. 5 (C) → FIG. 5 (D)). The revolving sealer 37 is maintained in a downward orientation by a slide bar (not shown) spanned between the holding portion 39 and the holding portion 40.

  The pair of rotating disks 41 rotate around the horizontal axis, while the pair of rotating disks 42 rotate in the opposite direction around the horizontal axis. The rotating disk 42 rotates so that the upper half advances from the upstream side to the downstream side and the lower half returns from the downstream side to the upstream side.

  The sealer 38 revolves around the horizontal axis by rotating the pair of rotating disks 42 around the horizontal axis. The sealer 38 advances from the upstream side to the downstream side from the horizontal axis serving as the center of revolution (see FIG. 5 (D) → FIG. 5 (A) → FIG. 5 (B)), and below the horizontal axis, It revolves in a direction returning from the downstream side to the upstream side (see FIG. 5B → FIG. 5C → FIG. 5D). The revolving sealer 38 is maintained in an upward posture by a slide bar (not shown).

  According to the end seal device 13 described above, the sealant 37 and 38 can sandwich the packaging material YA1 up and down to end seal and cut. Since the end seal device 13 advances the sealers 37 and 38 from the upstream side to the downstream side according to the flow of the packaging material YA1 (see FIG. 5D → FIG. 5A → FIG. 5B), it is smooth. The packaging material YA1 is sandwiched with a gentle flow.

  (First interlocking mechanism) The first interlocking mechanism 55 repeatedly operates in the order of FIG. 6 (A) → FIG. 6 (B) → FIG. 7 (A) → FIG. 7 (B) → FIG. Specifically, as the pair of rotating disks 42 rotate around the horizontal axis, the holding unit 40 that holds the sealer 38 (see FIG. 2) revolves around the horizontal axis. The holding part 40 advances from the upstream side to the downstream side from the horizontal axis as the center of revolution (see FIG. 7B → FIG. 6A → FIG. 6B), and downward from the horizontal axis. Then, it revolves in the direction returning from the downstream side to the upstream side (see FIG. 6 (B) → FIG. 7 (A) → FIG. 7 (B)).

  As the holding portion 40 revolves around the horizontal axis, the cam floor 58 attached to the holding portion 40 via the upstream plate 57 revolves around the horizontal axis. The cam floor 58 advances from the upstream side to the downstream side from the horizontal axis serving as the center of revolution (see FIG. 7 (B) → FIG. 6 (A) → FIG. 6 (B)), and below the horizontal axis, It revolves in the direction returning from the downstream side to the upstream side (see FIG. 6B → FIG. 7A → FIG. 7B).

  As the cam floor 58 revolves around the horizontal axis, the guide member 59 that guides the cam floor 58 advances and retreats in the traveling direction of the upstream traveling surface 17a. The guide member 59 advances from the upstream side to the downstream side when the cam floor 58 is positioned above the horizontal axis that is the center of revolution (see FIG. 7 (B) → FIG. 6 (A) → FIG. 6 (B)). . Further, the guide member 59 does not substantially advance or retreat when the cam floor 58 is positioned downstream from the horizontal axis that is the center of revolution (see FIG. 6B → FIG. 7A). Furthermore, when the cam floor 58 is located on the upstream side and below the horizontal axis that is the center of revolution, the guide member 59 retracts from the downstream side to the upstream side (see FIG. 7A → FIG. 7B). ).

  When the guide member 59 moves back and forth in the travel direction of the upstream travel surface 17a, the rollers 18 to 20 (see FIG. 1) move forward and backward integrally with the guide member 59, and the upstream travel surface 17a expands and contracts. When the guide member 59 and the rollers 18 to 20 are integrated with each other and advance from the upstream side to the downstream side, the upstream running surface 17a extends to the downstream side (FIG. 7 (B) → FIG. 6 (A) → FIG. 6 (B)). Further, when the guide member 59 and the rollers 18 to 20 are not integrally moved forward and backward, the upstream running surface 17a does not substantially expand and contract (see FIG. 6B → FIG. 7A). Further, when the guide member 59 and the rollers 18 to 20 are integrated with each other and the upstream running surface 17a is retracted from the downstream side to the upstream side, the upstream side running surface 17a contracts to the upstream side (FIG. 7A → FIG. 7B). reference).

  Further, when the holding portion 40 revolves around the horizontal axis, the cam floor 61 attached to the holding portion 40 via the downstream plate 60 revolves around the horizontal axis. The cam floor 61 advances from the upstream side to the downstream side from the horizontal axis serving as the center of revolution (see FIG. 7B → FIG. 6A → FIG. 6B), and below the horizontal axis, It revolves in the direction returning from the downstream side to the upstream side (see FIG. 6B → FIG. 7A → FIG. 7B).

  As the cam floor 61 revolves around the horizontal axis, the guide member 62 that guides the cam floor 61 advances and retreats in the traveling direction of the downstream traveling surface 23a. The guide member 62 advances from the upstream side to the downstream side when the cam floor 61 is located above the horizontal axis that is the center of revolution (see FIG. 7B → FIG. 6A → FIG. 6B). . Further, the guide member 62 retreats from the downstream side to the upstream side when the cam floor 61 is positioned below the horizontal axis that is the center of revolution (FIG. 6 (B) → FIG. 7 (A) → FIG. 7 (B). reference).

  As the guide member 61 advances and retreats in the running direction of the downstream running surface 23a, the rollers 24 to 30 (see FIG. 1) move forward and backward together with the guide member 62, and the downstream running surface 23a expands and contracts. The downstream running surface 23a contracts to the downstream side when the guide member 62 and the rollers 24 to 30 are integrated to advance from the upstream side to the downstream side (FIG. 7 (B) → FIG. 6 (A) → FIG. 6 (B)). Further, when the guide portion 62 and the rollers 24 to 30 are integrated and the downstream traveling surface 23a is retracted from the downstream side to the upstream side, the downstream traveling surface 23a extends to the upstream side (FIG. 6B → FIG. 7A). (See FIG. 7B).

  According to the first interlocking mechanism 55 described above, when the upstream travel surface 17a extends downstream, the downstream travel surface 23a contracts downstream, and the distance between the upstream travel surface 17a and the downstream travel surface 23a. Is kept constant (see FIG. 7B → FIG. 6A → FIG. 6B). Further, when the upstream traveling surface 17a does not substantially expand and contract, the downstream traveling surface 23a extends to the upstream side, and the distance between the upstream traveling surface 17a and the downstream traveling surface 23a is close (FIG. 6B → FIG. 7). (See (A)). Further, when the upstream traveling surface 17a contracts to the upstream side, the downstream traveling surface 23a extends to the upstream side by a small amount compared to the contraction amount of the upstream traveling surface 17a, and the upstream traveling surface 17a and the downstream traveling surface 17a The distance between the side running surfaces 23a is separated (see FIG. 7A → FIG. 7B). Thus, according to the first interlocking mechanism 55, when the packaging material YA1 is sandwiched up and down by the sealers 37 and 38, the distance between the upstream traveling surface 17a and the downstream traveling surface 23a is separated (FIG. 7A). ) → See FIG. 7B) Further, according to the first interlocking mechanism 55, after the upper and lower sandwiches of the packaging material YA1 by the sealers 37 and 38 are released, the upstream running surface 17a and the downstream running surface 23a Are close to each other (see FIG. 6B → FIG. 7A).

  (Second interlocking mechanism) The second interlocking mechanism 56 repeatedly operates in the order of FIG. 8 (A) → FIG. 8 (B) → FIG. 9 (A) → FIG. 9 (B) → FIG. Specifically, the pair of rotating disks 42 revolves around the horizontal axis. The holding portion 40 advances from the upstream side to the downstream side from the horizontal axis serving as the center of revolution (see FIG. 9B → FIG. 8A → FIG. 8B), and below the horizontal axis. Then, it revolves in the direction returning from the downstream side to the upstream side (see FIG. 8B → FIG. 9A → FIG. 9B).

  When the holding part 40 revolves around the horizontal axis, the elevating support member 64 attached to the plate 63 revolves around the horizontal axis. The raising / lowering support member 64 advances from the upstream side to the downstream side from the horizontal axis serving as the center of revolution (see FIG. 9B → FIG. 8A → FIG. 8B), and downward from the horizontal axis. In Fig. 8, it revolves in the direction returning from the downstream side to the upstream side (see Fig. 8B-> Fig. 9A-> Fig. 9B).

  The lower pressing portion 46 supported by the fixed support member 48 (see FIG. 4) is a case where the elevating support member 64 revolves below the horizontal axis serving as the center of revolution and revolves upstream (0 o'clock at 12 o'clock). In the clockwise direction (between 180 and 270 °), that is, when the elevating support member 64 rises and retreats upstream, the elevating support member 64 rises while retreating upstream in conjunction with the elevating support member 64. Is pushed up from below and rises (see FIG. 9A → FIG. 9B).

  Further, the lower push portion 46 is provided when the lifting support member 64 revolves above the horizontal axis serving as the center of revolution and upstream, that is, when the lifting support member 64 rises and travels downstream. (270 to 360 °), and proceeds to the downstream side integrally with the lifting support member 64 and is further lifted by being lifted from below by the rising support member 64 (FIG. 9B → FIG. 8A). reference).

  Further, the lower pressing portion 46 is provided when the elevating support member 64 revolves downstream (0 to 90 °) above the horizontal axis that is the center of revolution (ie, when the elevating support member 64 is lowered). When proceeding to the downstream side, it proceeds to the downstream side together with the lifting support member 64 and descends (see FIG. 8 (A) → FIG. 8 (B)).

  And the lower side push part 46 is, when the raising / lowering support member 64 revolves downstream (90-180 degrees) below the horizontal axis used as a revolution center, ie, the raising / lowering support member 64 descend | falls. When retreating to the upstream side, it descends integrally with the lifting support member 64, is supported by the fixed support member 48 (see FIG. 4), and moves away from the lifting support member 64 (FIG. 8B → FIG. 9A). reference).

  (Packaging Machine) The packaging machine 10 repeatedly and continuously operates in the order of FIG. 10 (A) → FIG. 10 (B) → FIG. 10 (A). Specifically, the bread pan XA1 wrapped in the packaging material YA1 formed into a cylindrical shape by the travel of the belt 17 in the belt conveyor 11 is end-sealed and cut in the end seal device 13 before and after the bread pan XA1. As a packaged product, it is handed over to the downstream belt conveyor 12. In addition, in order to form the extension part used as the binding allowance for bundling the upper part of a package (packaging bag) with a closure, bread | pan XA1 is supplied to the packaging material YA1 at some intervals (refer FIG.10 (B)). ).

  In accordance with the timing of end sealing, the packaging material YA1 is sandwiched from above and below by the deaeration device 14, the bread press XA1 is pressed from above by the product presser 15, and the bread press XA1 is pressed from the rear by the rear presser 75. Therefore, the air in the package is efficiently discharged. When the end seal is finished, the upper and lower sealers 37, 38 are separated from each other, and the deaeration device 14, the product presser device 15, and the rear presser device 75 return to the standby position. At the same time, the belt conveyors 11 and 12 approach each other, so that the subsequent bread XA1 is smoothly transferred from the belt conveyor 11 to the belt conveyor 12. This series of processes is continuously repeated, and packaged products of the bread loaf XA1 are produced one after another.

  Thus, according to the packaging machine 10, the deaeration device 14 that moves up and down in synchronization with the timing of the end seal device 13 that sandwiches and seals the packaging material YA1 up and down sandwiches the packaging material YA1 up and down. Therefore, by setting the packaging material YA1 to be sandwiched in the vicinity of half the height of the article, the air in the packaging material YA1 is effectively released and an abnormal tension acts on one of the upper side or the lower side of the packaging material YA1. Can be avoided, and the bread XA1 is not crushed when the air in the packaging material YA1 is evacuated. Furthermore, since the deaeration device 14 is provided in the region of the belt conveyor 12, the distance between the belt conveyor 11 and the belt conveyor 12 is increased compared to the case where the deaeration device 14 is assumed to be provided between the belt conveyor 11 and the belt conveyor 12. do not have to. By setting the interval as narrow as possible, the bread bread XA1 can be handed over from the belt conveyor 11 to the belt conveyor 12 with a smooth flow.

  The present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit and technical idea thereof.

  That is, in the above embodiment, the quantity of each component can be changed as appropriate. For example, the quantity of the lower pressing part 46 is mentioned.

  Alternatively, in the above-described embodiment, the downstream side running surface 23a divided into a plurality of running directions is configured by the belt 23 of the belt conveyor 12. However, the bread bread XA1 may be transported from the upstream side to the downstream side, and is arranged at intervals. You may comprise by several rollers.

DESCRIPTION OF SYMBOLS 10 Packing machine 11,12 Belt conveyor 13 End seal apparatus 14 Deaeration apparatus 15 Support apparatus 16 Interlocking mechanism 17 Belt 17a Upstream running surface 17b Return surface 18-21 Roller 23 Belt 23a Downstream running surface 23b Return surface 24-34 Roller 37, 38 Sealer 39, 40 Holding part 39a, 40a Slider 41, 42 Rotating disc 41a, 42a Notch groove 41b, 42b Rotating shaft 44 Lower deaerator 45 Upper deaerator 46 Lower push part 47 Sponge sheet 48 Fixed support member 49 Sponge block 50 Cylinder 52 Sponge block 53 Cylinder 55 First interlocking mechanism 56 Second interlocking mechanism 57 Upstream plate 58 Cam floor 59 Guide member 59a Groove 60 Downstream plate 61 Cam floor 62 Guide member 62a Groove 63 Plate 64 Lifting support member 64a Notch 71 Side plate 71a Cam groove 72, 73 Cam floor 75 Rear pressing device 75a Support arm 75b Contacting part XA1 Bread YA1 Packaging material

Claims (8)

An upstream conveying means that has an upstream traveling surface that travels from upstream to downstream, wraps the articles supplied from the previous process, and wraps them in a packaging material that is continuously supplied and formed into a cylindrical shape; and
A downstream transport unit that has a downstream travel surface that travels from upstream to downstream following the upstream travel surface and that transports the article transported by the upstream transport unit to the downstream travel surface. When,
A pair of upper and lower sealing means for sandwiching and sealing the packaging material from above and below between the upstream side conveying means and the downstream side conveying means, and a packaging machine comprising:
The downstream running surface is divided into a plurality of running directions in the vicinity of the sealing means to form a gap,
Furthermore, it has a lower pressing part that can be accommodated in the gap and can be moved up and down, and an upper pressing part that can be moved up and down above the lower pressing part, and the lower pressing part and the upper pressing part. The portion includes a deaeration unit that moves up and down at a timing when the sealing unit seals , and sandwiches the packaging material in the vicinity of half the height of the article to remove air in the packaging material.
Packaging machine. The upstream running surface and the downstream running surface are separated when the upper and lower sealing means are close to each other, and are adjacent when the upper and lower sealing means are separated from each other. To
The packaging machine according to claim 1. A first interlocking mechanism that interlocks an operation in which the upstream traveling surface and the downstream traveling surface approach or separate from each other with an operation in which the sealing unit moves up and down,
The packaging machine according to claim 2. The first interlocking mechanism includes a cam floor that moves up and down integrally with the sealing means, and a guide member that is provided in the upstream conveying means and has a groove that guides the cam floor. ,
The packaging machine according to claim 3. A second interlocking mechanism for interlocking the operation of raising and lowering the lower pressing portion with the operation of raising and lowering the sealing means,
The packaging machine in any one of Claims 1-4. The lower pressing portion has a length in a direction orthogonal to the traveling direction, and both longitudinal ends thereof are provided to protrude to the side of the downstream traveling surface,
The second interlocking mechanism pushes up both ends of the lower pressing portion from below,
The packaging machine according to claim 5. The lower pressing portion is accommodated in a state flush with the downstream running surface,
The packaging machine in any one of Claims 1-6. The pair of sealing means moves downstream with the packaging material in a state where the packaging material is sandwiched, and then returns to the upstream after being separated from each other.
The packaging machine according to any one of claims 1 to 7.

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