JP6690916B2 - Deaerator and packaging machine - Google Patents

Description

  The present invention relates to a deaerator and a packaging machine used for a packaging machine and the like.

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

  At the time of this end-sealing, there is known a technique of removing excess air inside the packaging material by a degassing air nozzle and a degassing sponge (for example, refer to Patent Document 1).

  However, with the technique described in Patent Document 1, when packaging an article having a certain height such as bread, it is difficult to effectively remove the air in the packaging material without crushing the article. If the air in the packaging material is not sufficiently degassed and end-sealed, the bag may be broken at a later step (for example, the step of squeezing the packaging bag or the step of packaging multiple packaging bags). There is. Therefore, at the time of end-sealing, a method is known in which the upper surface side and the rear surface (downstream surface) side of the conveyed article are depressurized by a depressing device (see, for example, Patent Document 2).

Japanese Patent No. 4392525 Japanese Patent No. 5763332

  However, depending on the packaged article, the length of the article in the transport direction may change according to the increase or decrease in the internal content. Taking bread as an example of an article, only the length in the carrying direction of the article changes between the case of packaging one loaf and the case of packaging three loaves. In the related art (Patent Documents 1 and 2), in order to perform sufficient deaeration, a deaeration sponge or a pressing device is brought into contact with one side (for example, a rear surface side) of a packaged article in the traveling direction. Since the air has been deaerated, it is necessary to move (adjust) the positions of the deaeration sponge and the rear pressing device when the length of the article in the transport direction changes. Further, in some cases, it may be necessary to adjust or replace the positions of the degassing air nozzle and the sponge block for degassing from above the article, which causes a problem of complicated work.

  Further, the rear pressing device of Patent Document 2 has a cantilever structure in which an abutting portion is provided at the tip of a support arm rotatable in the traveling direction of an article, and a base end portion serving as a rotation center of the support arm. There was also a problem that deterioration in strength tends to proceed.

  The present invention has been made in view of the above problems, and even when the length of the article in the transport direction changes, deaeration in the packaging material of the article of different length without adjusting the position. It is an object of the present invention to provide a deaerator capable of effectively performing the above and suppressing deterioration of parts and a packaging machine including the deaerator.

(1) The present invention is a deaerating device that removes air inside the packaging material when the packaging material is wrapped with the packaging material while transporting the article on the transport surface, wherein the packaging material packaged with the article is the article. a first degassing means is sandwiched from the side or top venting air within the packaging material, it is disposed on the downstream side in the transport direction of the article, on the downstream side of the packaging material packaging the article, the transport direction and a second degassing means removing the air between the downstream end and the packaging material at least article by Rukoto blowing air toward the upstream direction of the second degassing means, before It is arranged to be inclined with respect to the transport surface or the first degassing means, and according to the shape of the article, air can be reflected and blown by the transport surface or the first degassing means, or Directly empty the packaging material The are configured to be capable of spraying, it is deaerator characterized.

  With such a configuration, it is possible to effectively deaerate and prevent deterioration of parts without damaging the article and the packaging material. Further, even when the length of the conveyed article in the conveying direction is changed, the packaging material can be used without exchanging the first deaerating means and the second deaerating means and adjusting the position and angle. It is possible to efficiently deaerate the inside.

  (2) In the present invention, the second deaeration means can blow air directly onto the packaging material when the length along the transport direction of the article is the first length. In the case of a second length which is arranged at a position and the length along the transport direction of the article is shorter than the first length, air is blown to the transport surface or the first degassing means, The deaerator according to (1) above, which is arranged at a position where the air reflected by the transport surface or the first deaerator can be blown to the downstream side of the packaging material. is there.

  (3) The present invention also provides the deaeration means according to the above (1) or (2), wherein the second deaeration means is configured to interlock with the first deaeration means. Qi device.

  (4) The present invention is also the deaeration device according to the above (1) or (2), wherein the second deaeration means is fixed to the transport surface.

  (5) In the present invention, the second degassing means includes an air nozzle, the air nozzle can adjust an air blowing angle, and the air nozzle can adjust a position with respect to a direction perpendicular to the conveying direction. The deaerator according to any one of (1) to (4) above.

  (6) In the present invention, the deaerator according to any one of (1) to (5) above and the continuously supplied strip-shaped packaging material are formed into a tubular bag to form a center seal. A center seal means for performing, an upstream side transport means downstream of the center seal means for wrapping and transporting the article supplied from the previous step in the tubular packaging material, and the upstream side. An end seal that sandwiches and seals and cuts the packaging material from above and below between the downstream-side transporting means that continues to transport the article transported by the transporting means and the upstream-side transporting means and the downstream-side transporting means. Means and the deaerator is arranged downstream of the upstream side conveying means.

  With such a configuration, it is possible to effectively deaerate and prevent deterioration of parts without damaging the article and the packaging material. Further, even when the length of the conveyed article in the conveying direction is changed, the packaging material can be used without exchanging the first deaerating means and the second deaerating means and adjusting the position and angle. It is possible to provide a packaging machine that efficiently deaerates the inside.

  ADVANTAGE OF THE INVENTION According to this invention, even if the length of the article in the transport direction changes, degassing is effectively performed in the packaging material of articles of different lengths without adjusting the position and deterioration of parts It is an object of the present invention to provide a deaerator capable of suppressing the above and a packaging machine equipped with the deaerator.

It is a front view which shows the outline of the packaging machine which concerns on this invention. It is a front view which shows the outline of the packaging machine which concerns on this invention. It is a front view showing the outline of the deaeration device concerning the present invention. It is a front view showing the outline about other examples of the deaeration device concerning the present invention. It is a front view showing the outline about other examples of the deaeration device concerning the present invention. It is an upper surface figure showing the outline about other examples of the deaeration device concerning the present invention. It is a front view showing the outline about other examples of the deaeration device concerning the present invention.

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

  First, the configuration of the packaging machine 10 will be described with reference to FIG. FIG. 1 is a front view showing an outline of the packaging machine 10.

  In addition, in each drawing, for simplification of the drawings, illustration of components and the like unnecessary for the description is appropriately omitted. Furthermore, the direction in the following description refers to the direction 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 or the like that is continuously supplied so that the bread XA1 that is sequentially supplied from the previous process is directed from upstream to downstream. Package each loaf while transporting. In FIG. 1, the left side is upstream and the right side is downstream. In the present embodiment, the case of packaging the loaf bread XA1 will be described as an example, but the packaging machine of the present invention can be used for packaging various items such as other breads.

  (Packaging machine)

  The packaging machine 10 includes a belt conveyer 11 which is an upstream conveyer arranged on the upstream side, a belt conveyer 12 which is a downstream conveyer subsequent to the belt conveyer 11, and an upstream side of the belt conveyer 11. A center seal device (not shown) for center-sealing the material YA1, an end-seal device 13 between both belt conveyors 11 and 12 for end-sealing and cutting the packaging material YA1, and a deaerator for removing air from the packaging material YA1. (First deaerator 15 and second deaerator 14) and the like. Hereinafter, each component of the packaging machine 10 will be described. The operation of each component is controlled by a control device (not shown).

  (Center Sealing Device) The center sealing device (not shown) is arranged on the upstream side of the belt conveyor 11. This center seal device makes a continuous bag-shaped packaging material YA1 into a cylindrical bag, and then centrally seals both side edges thereof in the transport direction.

  (Belt Conveyor) The belt conveyor 11 includes an annular belt 17 running from upstream to downstream, one or more rollers (not shown) arranged on the upstream side, and rollers 18 arranged 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) that support each component. And so on.

  The belt 17 is endlessly connected to an upstream traveling surface 17a traveling from upstream to downstream and a return surface 17b disposed below the upstream traveling surface 17a and traveling from downstream to upstream. Has been done. On the upstream traveling surface 17a of the belt 17, the loaf bread XA1 wrapped in the tubular packaging material YA1 is conveyed. The belt 17 runs 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 back and forth in the running direction of the upstream running surface 17a by the reciprocating movement of the moving frame. That is, when the moving frame moves in the downstream direction, the upstream running surface 17a is extended in the downstream direction, but at this time, the distance between the roller 20 and the roller 21 supported by the fixed frame is reduced, During this period, the extra length of the belt 17 stored is paid out. On the other hand, when the moving frame moves in the upstream direction, the upstream running surface 17a is shortened, and the extra length of the belt 17 generated thereby is absorbed by the increased distance between the rollers 20 and 21.

  According to the rollers 18 to 21 and the rollers (not shown), the belt 17 extends horizontally from the upper portion of the roller (not shown) arranged on the upstream side toward the upper portion of the roller 18 arranged on the downstream side. Then, the belt 17 extends obliquely downward from the side portion of the roller 18 toward the side portion 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 portion of the roller 20 toward the upper portion 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 running from upstream to downstream, rollers 24 to 29 arranged on the upstream side, rollers 30 and 31 for adjusting 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 arranged on the downstream side, and a fixed frame and a moving frame (not shown) that support each component. , And so on.

  The belt 23 is endlessly connected to a downstream traveling surface 23a traveling from upstream to downstream and a return surface 23b disposed below the downstream traveling surface 23a and traveling from downstream to upstream. Has been done. On this belt 23, the loaf bread XA1 taken over from the belt conveyor 11 is placed on the downstream running surface 23a. The belt 23 runs by the rotation of the roller 32.

  The rollers 24 to 30 are rotatably attached to a moving frame (not shown), and can move back and forth in the running direction of the downstream 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 23a. The roller 25 is arranged below the rollers 24 and 26 between the rollers 24 and 26. The roller 25 detours the belt 23 downward using 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 detours the belt 23 downward using the rollers 26 and 28 as fulcrums. Thus, the rollers 25 and 27 divide the downstream traveling surface 23a into a plurality of portions in the traveling direction.

  When the moving frame moves in the upstream direction, the downstream traveling surface 23a is extended in the upstream direction, but at this time, the gap between the roller 30 and the roller 31 supported by the fixed frame is reduced, and in the meantime. The extra length of the stored 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 the increase in the distance between the rollers 30 and 31.

  The roller 32 is rotatably attached to the fixed frame. The roller 32 is rotated by receiving the rotational power of 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 traveling surface 23a to the return surface 23b. The rollers 24 to 31, 33, and 34 other than the roller 32 rotate as the belt 23 travels.

  According to the rollers 24 to 34 described above, the belt 23 extends horizontally from the upper portion of the roller 28 arranged on the upstream side toward the upper portion of the roller 34 arranged 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 arranged on the upstream side. During this time, the belt 23 is arranged in a zigzag shape by the rollers 29 to 31, 33.

  (End Sealing Device) The end sealing device 13 is arranged at a fixed position between the belt conveyors 11 and 12, and the packaging material YA1 formed into a cylindrical bag is provided in the width direction of the traveling surfaces 17a and 23a. End seal and cut. The end seal device 13 includes sealers 37, 38 arranged along the width direction so as to face above and below the packaging material YA1, holding portions 39, 40 for holding the sealers 37, 38, and a holding portion 39. A pair of rotating discs (not shown) that support the sealer 37 via the holder and rotate about the horizontal axis, and a pair of rotating discs that support the sealer 38 via the holder 40 and rotate about the horizontal axis ( (Not shown), a pair of side plates (not shown) arranged on the sides of these rotating discs, a cam floor (not shown) provided at the tips of the shafts of the holding portions 39 and 40, and the like. There is.

  The upper sealer 37 is moved up and down by a slide bar (not shown) that is stretched between the holding portion 39 and the holding portion 40 while maintaining the downward posture. The lower sealer 38 is moved up and down by the slide bar while maintaining its upward posture. The lower sealer 38 descends when the upper sealer 37 rises, and rises when the upper sealer 37 descends. When the sealer 37 reaches the lowest position and the sealer 38 reaches the highest position, the sealers 37 and 38 sandwich the packaging material YA1 vertically and end-seal and cut. In this way, the sealers 37 and 38 function as a sealing unit that vertically sandwiches the packaging material YA1 and seals 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 a pair of rotating discs (not shown), and can be revolved around the rotation axis of the rotating discs while maintaining its posture by the rotation of these rotating discs. To go up and down. The holder 40 holds the lower part of the sealer 38. The holding portion 40 is also supported at an eccentric position of a pair of rotating discs (not shown), and the rotation of these rotating discs around the rotation axis causes them to revolve around the rotation axis while maintaining their posture. It goes up and down.

  (First Deaerator) The first deaerator 15 shown in FIG. 1 is provided above the belt conveyor 12 on the upstream side. The first deaerator 15 includes a first deaerator (deaerator plate) 52 that pushes the bread XA1 from above with a weak force, a cylinder 53 that raises and lowers the deaerator plate 52, and the like. . The deaeration plate 52 is, for example, a sponge block, and the pressing surface 52S that presses the loaf bread XA1 via the packaging material YA1 is provided so as to face the downstream traveling surface 23a of the belt conveyor 12. The length of the deaeration plate 52 (pressing surface 52S) in the transport direction is equivalent to the maximum length (for example, the length of 3 loaves) allowed for the bread XA1 packaged by the packaging machine 10. . The degassing plate 52 is interlocked with the end seal device 13 and descends and rises so as to approach and separate from the downstream traveling surface 23a serving as a transport surface.

  That is, when the end seal device 13 end seals and cuts the packaging material YA1, the first deaerator 15 reaches the lowest position of the deaerator plate 52 and depresses the loaf bread XA1 with a weak force from above. I care. In addition, the first deaerator 15 blows air on the downstream side of the deaeration plate 52 to the downstream side of the packaging material YA1 packaging the bread XA1 to remove air from the packaging material YA1 (second deaerator). It is equipped with a means 75. The air nozzle 75 is arranged so as to be inclined at a predetermined angle with respect to the downstream traveling surface 23a so that the blown air can be reflected by the downstream traveling surface 23a which is the transport surface of the loaf bread XA1. Further, the air nozzle 75 does not change its relative position with respect to the degassing plate 52 (position in the carrying direction, height from the carrying surface) and relative angle with respect to the degassing plate 52, and interlocks with the lifting and lowering of the degassing plate 52. , Descends and rises so as to approach and separate from the downstream traveling surface 23a. The air nozzle 75 may be linked to the degassing plate 52 by being fixed to the degassing plate 52, or may be linked to the degassing plate 52 via an interlocking mechanism.

  In the first degassing device 15, the air nozzle 75 and the degassing plate 52 cooperate to perform degassing. Further, the first deaerator 15 cooperates with a second deaerator 14 described later to perform deaeration. That is, the air nozzle 75 blows air to the rear surface portion (the end surface portion on the downstream side in the transport direction of the loaf bread XA1) of the loaf bread XA1 in synchronization with the operation timing of the degassing plate 52 and the second degassing device 14. Degas the inside of YA1. When the deaeration is completed, the air nozzle 75 stops blowing air and prepares for the next deaeration. The amount of air blown out from the air nozzle 75 is sufficient so that the air inside the packaging material YA1 is pushed out, so that the bread Bread XA1 and the packaging material YA1 that are the products are not damaged.

  In addition, the first deaeration device 15 includes the first deaeration means (the deaeration plate 52) and the second deaeration device 15 even when the length of the conveyed article (bread) XA1 in the conveyance direction changes. It is possible to deaerate the inside of the packaging material YA1 without replacing the deaerating means (air nozzle 75) and adjusting the position and angle. The degassing mode of the first degassing device 15 will be described later in detail.

  (Second Deaerator) The second deaerator 14 is provided on the downstream side of the end seal device 13 and includes a lower deaerator 44 and an upper deaerator 45. The lower deaerator 44 and the upper deaerator 45 cooperate with each other to remove air from the packaging material YA1.

  The lower deaerator 44 is provided along the gap of the downstream running surface 23a that is divided into a plurality of pieces, and includes an elongated lower pressing portion 46 that presses the packaging material YA1 from below. The upper surface of the lower pusher 46 is covered with a sponge sheet (not shown), and the lower pusher 46 prevents the packaging material YA1 from being scratched. The lower pushing portion 46 is arranged flush with the downstream traveling surface 23a and functions as a bridging member bridging the gaps. The lower pusher 46 is movable only in the vertical direction by a guide member (not shown).

  Both ends of the lower pusher 46 are supported from below by a fixed support member (not shown), and the fixed support member is fixed to a moving frame (not shown) that constitutes the belt conveyor 12, and the downstream traveling surface. It is attached so that it can move back and forth in the traveling direction of 23a. This fixed support member moves back and forth integrally with the rollers 24 to 30.

  The lower side of the lower pusher 46 is fixed to the lift support member 64. The elevating support members 64 are fixed to plates 63 provided on both sides in the width direction of the downstream traveling surface 23 a, and the plates 63 are attached to the holding portion 40.

  The elevating / lowering support member 64 revolves around the horizontal axis by the revolution of the holding section 40 about the horizontal axis, and pushes up the lower pushing section 46 from below and raises it.

  The sealer 38 in the end seal device 13 moves up and down when the upstream traveling surface 17a expands and contracts, the downstream traveling surface 23a expands and contracts, and the lower pusher 46 of the second deaerator 14 moves up and down. It is configured to be linked to movement.

  The upper deaerator 45 includes a sponge block 49 that functions as an upper pusher that pushes the packaging material YA1 from above, a cylinder 50 that moves the sponge block 49 up and down, and the like. The sponge block 49 descends when the lower pushing portion 46 rises, and rises when the lower pushing portion 46 descends.

  In the deaerator 14 described above, 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 sandwiched between the upper and lower sides to remove air from the packaging material YA1. The position where the lower pusher 46 and the sponge block 49 sandwich the packaging material YA1 can be adjusted by the height of the bread XA1 that is a product.

  In the above-described embodiment, the downstream traveling surface 23a divided into a plurality of traveling directions is configured by the belt 23 of the belt conveyor 12, but it is sufficient if the bread XA1 can be conveyed from upstream to downstream, and they are arranged at intervals. It may be constituted by a plurality of rollers.

  (Packaging Machine) The packaging machine 10 repeatedly and continuously operates in the order of FIG. 2 (a) → FIG. 2 (b) → FIG. 2 (a). Specifically, the bread XA1 wrapped in the packaging material YA1 formed into a tubular bag by the traveling of the belt 17 on the belt conveyor 11 is end-sealed and cut before and after the bread XA1 in the end seal device 13, and As a packaged product, it is taken over by the belt conveyor 12 on the downstream side. In addition, when forming the extension part used as a binding margin for binding the upper part of the package (packing bag) with the closure, the bread XA1 is supplied to the packaging material YA1 with a certain interval (FIG. 2 (b)). )reference).

  The packaging material YA1 is sandwiched from above and below by the second deaerator 14 in accordance with the timing of the end sealing. Further, the deaeration plate 52 of the first deaerator 15 presses the loaf bread XA1 from above, and the air blown obliquely upward from the air nozzle 75 toward the rear of the loaf bread XA1 allows the air in the packaging material YA1 to be efficiently supplied. Well discharged. When the end seal is completed, the upper and lower sealers 37 and 38 are separated from each other, and the first deaerator 15 and the second deaerator 14 return to the standby position. At the same time, since the belt conveyors 11 and 12 are close to each other, the subsequent loaf bread XA1 is smoothly transferred from the belt conveyor 11 to the belt conveyor 12. This series of processes is continuously and repeatedly performed to successively manufacture packaged products of the bread XA1.

  As described above, according to the packaging machine 10, the second deaerator 14, which moves up and down in synchronization with the timing of the end seal device 13 that vertically sandwiches the packaging material YA1 to end-seal it, sandwiches the packaging material YA1 vertically. . At this time, by setting the packaging material YA1 so as to be sandwiched in the vicinity of half the height of the article, air in the packaging material YA1 is effectively released, and an abnormal tension is applied to one of the upper side and the lower side of the packaging material YA1. It can be avoided that the bread XA1 is not crushed when the air in the packaging material YA1 is removed. Further, since the second deaerator 14 is provided in the area of the belt conveyor 12, it is assumed that the second deaerator 14 is provided between the belt conveyors 11 and 12. There is no need to increase the intervals. 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 in a smooth flow.

  Further, in the first deaerating device 15, when the end sealing device 13 end seals and cuts the packaging material YA1, the deaerating plate 52 depresses the bread XA1 from above with a weak force to deaerate, and the air nozzle 75 Blows air onto the rear surface of the bread XA1 to deaerate the inside of the packaging material YA1. At this time, the amount of air blown out is sufficient so that the air inside the packaging material YA1 is pushed out, and thus the bread XA1 and the packaging material YA1 that are the products are not damaged and deaeration can be effectively performed. .

  Further, as in the conventional case, a holding device having a cantilever structure in which an abutting portion is provided at the tip of a support arm rotatable in the traveling direction of an article has a strong strength at a base end portion serving as a rotation center of the support arm. Although there is a problem that deterioration easily progresses, according to the present embodiment, since the structure of the cantilever is not adopted, deterioration of parts of the deaerator can also be suppressed.

Furthermore, the first deaerating device 15 includes the first deaerating means (the deaerating plate 52) and the second deaerating means even when the length of the conveyed article (bread) XA1 in the carrying direction changes. It is possible to deaerate the inside of the packaging material YA1 without replacing the deaerating means (air nozzle 75) and adjusting the position and angle. This will be described in detail below.
(Deaeration mode of the first deaerator 15)

  Next, the deaeration mode of the first deaeration device 15 will be described. The length of the deaeration plate 52 (pressing surface 52S) in the transport direction is set to the maximum allowable length of the bread XA1 to be packaged (for example, the length of 3 loaves). Then, the air nozzle 75 rotates, for example, around the horizontal axis from the vertical direction with respect to the downstream side traveling surface 23a in the vertical plane (in the plane perpendicular to the downstream side traveling surface 23a serving as the transport surface), and the outlet is upstream. And the air outlet is tilted so as to be lower than the rear end portion of the air nozzle 75, and the air is blown obliquely upward from the downstream traveling surface 23a. At this time, the position of the air nozzle 75 and the angle with respect to the downstream traveling surface 23a (or the degassing plate 52) are such that the length along the conveyance direction of the loaf bread XA1 is the first length (for example, the maximum allowable length). In some cases, at a position and angle at which air can be directly blown to the packaging material YA1, and the bread XA1 has a second length shorter than the first length (for example, a length of one loaf). In the case of (1), air is blown to the downstream traveling surface 23a, and the air and the angle of the air reflected by the downstream traveling surface 23a are blown to the downstream side of the packaging material YA1. The air nozzle 75 may have a structure capable of moving in a direction perpendicular to the carrying direction (position can be adjusted), and adjusting an air blowing angle.

  This will be specifically described with reference to FIG. FIG. 3 is a schematic front view showing a main part of the first degassing device 15 for degassing the packaging material YA1 in which the breads XA1 having different lengths in the conveying direction are degassed. (a) and (b) shows the case where the bread XA1 having the maximum length (for example, the length of 3 lobbies) allowed for the packaging of the packaging machine 10 is deaerated, and FIG. , (D) is shorter than the maximum length (for example, a length of one loaf), the deaeration of the bread XA1 is shown.

  In addition, in the following embodiments and modifications, the downstream traveling surface 23a is illustrated in a simplified manner.

  As shown in FIGS. 3A and 3B, the length of the degassing plate 52 (pressing surface 52S) in the conveyance direction is the same as the maximum allowable length of the bread XA1 packaged by the packaging machine 10. Have Therefore, in the case of the bread XA1 having the maximum length, the bread XA1 packaged with the packaging material YA1 is conveyed to the degassing position (below the degassing plate 52) (FIG. 6A), and the degassing plate 52 is When descending, the entire upper surface of the pressing surface 52S is uniformly pressed and degassed ((b) of the same figure).

  In addition, the air nozzle 75 that interlocks with the degassing plate 52 is such that the air blown out from the air nozzle 75 (interferes with the degassing plate 52 as well) when the degassing plate 52 descends and is in a position to depress the bread XA1. It is fixed at a position and an angle where it is directly sprayed from diagonally above to the packaging material YA1 on the rear surface portion of the bread XA1.

  Therefore, when the degassing plate 52 is at the retracted position, the air nozzle 75 retracts upward together with the degassing plate 52 and stops the blowing of air ((a) in the figure). Then, while the deaeration plate 52 descends and presses the upper surface of the bread XA1 for deaeration, the air nozzle 75 descends together with the deaeration plate 52, and the bread XA1 of the bread XA1 is moved as indicated by an arrow in FIG. Air is blown directly onto the packaging material YA1 on the rear surface from obliquely above, and the inside of the packaging material YA1 is deaerated by air pressure.

  As described above, according to the first deaerator 15 of the present embodiment, the air in the packaging material YA1 can be efficiently deaerated by the deaerator plate 52 and the air nozzle 75. Further, the deaeration plate 52 suppresses the loaf bread XA1 from above via the packaging material YA1. Therefore, it is possible to prevent the loaf bread XA1 from moving due to the air ejected from the air nozzle 75.

  As shown in (c) of the same figure, even when the length of the bread XA1 is changed (shortened), the position of the deaeration plate 52 is not adjusted and the (a) and (b) of the same figure are shown. ) Can be degassed in the same state. That is, even in the case of the bread XA1 having a length of the bread XA1 shorter than the maximum length allowed (for example, a length of one loaf), the bread XA1 packaged with the packaging material YA1 has the degassing position (the degassing plate 52). When it is conveyed to the lower side of (), the degassing plate 52 descends. At this time, if the length of the loaf bread XA1 is shorter than the allowable maximum length, the loaf bread 52 does not need to be replaced or the position thereof should be adjusted, and the entire upper surface of the loaf surface is evenly formed without changing the degassing plate 52. It can be pressed ((d) in the figure).

  Further, it is possible to perform degassing in the same state as in FIGS. 7A and 7B without adjusting the position and angle of the air nozzle 75. The position and the angle of the air nozzle 75 are such that the air blown when the bread XA1 is long (first length) during deaeration ((b) and (d) in the figure). In order to reach the material YA1 directly and when the bread XA1 has a short length (the second length), the air blown onto the downstream traveling surface 23a on which the packaging material YA1 is not arranged. At a position and an angle (further, the amount of air blown out) at which the air can be blown from diagonally above, the air can be reflected by the downstream running surface 23a, and blown to the downstream side of the packaging material YA1 that wraps the bread XA1. It is fixed.

  That is, when the degassing plate 52 is at the retracted position, it is retracted upward along with it and air blowing is stopped (FIG. 7 (c)), and the degassing plate 52 descends and the upper surface of the bread XA1 is placed. When the air is being pressed and deaerated, the air nozzle 75 descends together with the deaeration plate 52 and blows air onto the downstream traveling surface 23a obliquely from above. As a result, the air is reflected by the downstream traveling surface 23a as indicated by the arrow in the figure, and the reflected air is blown against the packaging material YA1 on the rear surface portion of the loaf bread XA1 to be deaerated ((d) in the figure. )).

  Also in this case, the air in the packaging material YA1 can be efficiently degassed by the degassing plate 52 and the air nozzle 75. Further, since the bread XA1 (packaging material YA1) is suppressed from above by the deaeration plate 52, it is possible to prevent the packaging material YA1 from moving due to the air jetted from the air nozzle 75 and reflected by the downstream traveling surface 23a.

  In this way, even when the length of the bread XA1 to be packaged changes, the parts of the first deaerator 15 (the deaerator plate 52 and the air nozzle 75) are replaced and the position and angle are adjusted. Can be efficiently degassed without

Since the deaeration plate 52 is provided at the first length (maximum allowable length), when the length of the loaf bread YA1 becomes shorter as shown in FIG. If the air nozzle 75 is moved to the upstream side in order to blow the air directly onto the air, there is a risk of interfering with the degassing plate 52. In the present embodiment, even when the length of the loaf bread YA1 is shortened, the air nozzle 75 is not moved, and air is blown obliquely above the downstream traveling surface 23a and reflected on the downstream traveling surface 23a. Since the air is blown onto the packaging material YA1, the degassing plate 52 and the air nozzle 75 do not interfere with each other.
(Modification)

  A modification of the first deaerator 15 will be described with reference to FIGS. 4 to 7. 4 to 7 are all schematic diagrams showing the main parts of the first deaerator 15 extracted, FIGS. 4 and 5 are front views, FIG. 6 is a top view, and FIG. FIG. In addition, in each of FIG. 4 to FIG. 7, (a) and (b) show deaeration when the bread XA1 has a first length (for example, an allowable maximum length (for example, 3 loaves)). It is a figure shown, and (c) and (d) are figures showing deaeration when bread XA1 has the second length (for example, one loaf).

  As shown in FIG. 4, the air nozzle 75 may be attached to the frame 101 of the belt conveyor 12 without being configured to move together with the degassing plate 52. A bracket 102 extending in the vertical direction to the transport surface is fixed to the frame 101, and an air nozzle 75 is fixed to the tip of the bracket 102. As in the case of FIG. 3, the air nozzle 75 rotates in the vertical plane about the horizontal axis from the vertical direction with respect to the downstream traveling surface 23a serving as the transport surface to direct the outlet to the upstream side, and the outlet. Is inclined so as to be lower than the rear end portion of the air nozzle 75, and the air nozzle 75 is attached so that air is blown obliquely upward from the downstream traveling surface 23a. However, in this case, the outlet of the air nozzle 75 is attached to a position above the upper surface of the article XA1 having the highest height among the articles XA1 to be conveyed. That is, in this example, the deaeration plate 52 moves vertically with respect to the transfer surface, but the air nozzle 75 does not move with respect to the transfer surface. The configuration other than this is the same as that of the embodiment shown in FIG. 3, and thus the description thereof is omitted.

  When the article (bread XA1) has the first length, the bread XA1 packaged with the packaging material YA1 is conveyed to the deaeration position (below the deaeration plate 52) ((a) in the figure) and deaerated. The air plate 52 descends, and the entire upper surface of the loaf bread XA1 is uniformly pressed by the entire pressing surface 52S to be deaerated ((b) in the same figure).

  The air nozzle 75 is fixed at a position and an angle where the blown air is blown (without interfering with the degassing plate 52) directly onto the packaging material YA1 on the rear surface portion of the first length bread Bread XA1 from diagonally above. When the degassing plate 52 descends and presses the upper surface of the loaf bread XA1 to deaerate it, the air nozzle 75 blows air against the downstream traveling surface 23a, whereby the packaging material for the rear surface portion of the loaf bread XA1. Air is blown directly onto the YA1 from diagonally above to be deaerated ((b) in the same figure).

  As shown in (c) of the same figure, even when the length of the bread XA1 is changed (shortened), the position of the deaeration plate 52 is not adjusted and the (a) and (b) of the same figure are shown. ) Degas in the same condition.

  That is, when the loaf bread XA1 packaged with the packaging material YA1 is conveyed to the degassing position (below the degassing plate 52) ((c) in the figure), the degassing plate 52 descends. At this time, if the length of the loaf bread XA1 is shorter than the allowable maximum length, the loaf bread 52 does not need to be replaced or the position thereof should be adjusted, and the entire upper surface of the loaf surface is evenly formed without changing the degassing plate 52. Can be pressed ((d) in the figure)

  Further, it is possible to perform degassing in the same state as in FIGS. 7A and 7B without adjusting the position and angle of the air nozzle 75. That is, when the deaeration plate 52 is in the retracted position, the air blowing is stopped ((c) in the figure), and the deaeration plate 52 descends to press the upper surface of the loaf bread XA1 for deaeration. At times, the air nozzle 75 blows air onto the downstream traveling surface 23a obliquely from above. As a result, the air is reflected by the downstream traveling surface 23a as indicated by the arrow in the figure, and the reflected air is blown against the packaging material YA1 on the rear surface portion of the loaf bread XA1 to be deaerated ((d) in the figure. )).

  FIG. 5 is a front view showing another example of attachment of the air nozzle 75. In the example of FIGS. 3 and 4, the air nozzle 75 is arranged above the downstream traveling surface 23a serving as the transport surface, but the air nozzle 75 may be arranged below the downstream traveling surface 23a. In this case, the air blown from the air nozzle 75 is blown onto the packaging material YA1 without being blocked by the downstream running surface 23a. For example, the downstream running surface 23a constitutes a transport surface by arranging two belts so as to face each other so that the central portions thereof are separated from each other, and is located below (the downstream running surface 23a) between the two belts 23 (central portion). The air nozzle 75 is arranged at a position (away from the position).

  The number of belts 23 forming the transport surface may be two or more, and a plurality of air nozzles 75 may be arranged.

  Further, the belt 23 may be arranged so as to bypass the air nozzle 75. In this case, a plurality of air nozzles 75 may be arranged in a direction perpendicular to the transport direction, or an air nozzle 75 having a rectangular opening may be arranged.

  In the vertical plane, the air nozzle 75 is rotated about the horizontal axis from the vertical direction with respect to the downstream side traveling surface 23a (or the degassing plate 52) which is the transport surface so that the air outlet is directed to the upstream side and the air outlet is The air nozzle 75 is tilted so as to be located above the rear end of the air nozzle 75, and the air nozzle 75 is attached so that air is blown obliquely from below toward the downstream traveling surface 23a (the degassing plate 52).

  When the bread XA1 has a first length, the air nozzle 75 blows air blown directly onto the packaging material YA1 on the rear surface of the bread XA1 from obliquely below, and the bread XA1 has a second length. In this case, the blown air is blown onto the deaeration plate 52 obliquely from below, and the air is reflected by the deaeration plate 52 and can be blown on the downstream side of the packaging material YA1 for packaging the bread XA1. Fixed in position and angle. The air nozzle 75 may be attached to the frame of the belt conveyor 12 by a bracket (not shown here) as in FIG. 4. The configuration other than this is the same as that of the embodiment shown in FIG. 3, and thus the description thereof is omitted.

  When the article (bread XA1) has the first length, the bread XA1 packaged with the packaging material YA1 is conveyed to the deaeration position (below the deaeration plate 52) ((a) in the figure) and deaerated. The air plate 52 descends, and the entire upper surface of the loaf bread XA1 is uniformly pressed by the entire pressing surface 52S to be deaerated ((b) in the same figure).

  The air nozzle 75 is fixed at a position and an angle at which the blown air is directly blown onto the packaging material YA1 on the rear surface portion of the first length bread XA1 from obliquely below, and the degassing plate 52 descends to lower the bread XA1. While degassing by pressing the upper surface of the bread, the air nozzle 75 blows air against the bread XA1 from between the downstream traveling surfaces 23a, so that the packaging material YA1 on the rear surface of the bread XA1 is obliquely downward from below. Air is blown directly to be deaerated ((b) in the same figure).

  As shown in FIG. 7C, even when the length of the loaf bread XA1 changes (becomes shorter), the same state as in FIG. Degas with.

  That is, when the loaf bread XA1 packaged with the packaging material YA1 is conveyed to the degassing position (below the degassing plate 52) ((c) in the figure), the degassing plate 52 descends. At this time, if the length of the loaf bread XA1 is shorter than the allowable maximum length, the loaf bread 52 does not need to be replaced or the position thereof should be adjusted, and the entire upper surface of the loaf surface is evenly formed without changing the degassing plate 52. Can be pressed ((d) in the figure)

  Further, it is possible to perform degassing in the same state as in FIGS. 7A and 7B without adjusting the position and angle of the air nozzle 75. That is, when the deaeration plate 52 is in the retracted position, the air blowing is stopped ((c) in the figure), and the deaeration plate 52 descends to press the upper surface of the loaf bread XA1 for deaeration. At times, the air nozzle 75 blows air onto the degassing plate 52 from diagonally below. As a result, the air is reflected by the deaeration plate 52 as indicated by the arrow in the figure, and the reflected air is blown against the packaging material YA1 on the rear surface portion of the loaf bread XA1 to be deaerated ((d) in the figure). ).

  FIG. 6 is a top view showing another example of attachment of the air nozzle 75. In this example, the pair of deaeration plates 521 and 522 are provided on both sides in the traveling direction of the downstream traveling surface 23a so that the pressing surfaces 521S and 522S are perpendicular to the downstream traveling surface 23a which is the transport surface. Deploy. The pair of deaeration plates 521, 522 are provided so as to advance and retreat in the width direction of the downstream traveling surface 23a, and press the both side surfaces of the loaf bread XA1 with the pair of deaeration plates 521, 522 closest to each other. , Degas.

  The air nozzles 751 and 752 are also arranged above or below the downstream traveling surface 23a on both sides in the traveling direction of the downstream traveling surface 23a. The air nozzles 751 and 752 are each rotated in the horizontal plane (in the plane parallel to the downstream running surface 23a serving as the transport surface) about the vertical axis from the transport direction to direct the air outlet toward the upstream side, and the air nozzle 751 , 752 are tilted so as to be inside the rear end portion (center side of the transport surface), and are attached to the degassing plates 521 and 522 so that air is blown obliquely from the rear (downstream side). The air nozzles 751 and 752 may be interlocked with the degassing plate 52 as in FIG. 3, or may be attached to the frame of the belt conveyor 12 by a bracket (not shown here) as in FIG. Good. The configuration other than this is the same as that of the embodiment shown in FIG.

  When the article (bread XA1) has the first length, the bread XA1 packaged with the packaging material YA1 is conveyed to the deaeration position (the side of the deaeration plates 521 and 522) ((a) in the figure). ), The pair of deaeration plates 521, 522 approach each other toward the loaf bread XA1, and the entire holding surfaces 521S, 522S uniformly depress both side surfaces of the loaf bread XA1 for deaeration (FIG. (B)). ).

  The air nozzles 751 and 752 are at positions and angles at which the blown air is blown directly onto the packaging material YA1 on the rear surface portion of the first bread XA1 from the left oblique rear (downstream side) and the right oblique rear (downstream side). The air nozzles 751 and 752 are fixed to the bread XA1 from both sides of the downstream traveling surface 23a when the degassing plates 521 and 522 are close to each other and press both side surfaces of the bread XA1 to deaerate. By blowing air, air is blown directly to the packaging material YA1 on the rear surface portion of the loaf bread XA1 from the diagonally right rear and the diagonal left rear to be deaerated ((b) in the same figure).

  As shown in FIG. 7C, even when the length of the bread XA1 changes (becomes shorter), the positions of the degassing plates 521 and 522 are not adjusted and the same as that of FIG. Degas in the same condition.

  That is, when the bread XA1 packaged with the packaging material YA1 is conveyed to the degassing position (below the degassing plates 521 and 522) ((c) in the figure), the degassing plates 521 and 522 move forward and approach each other. . At this time, if the loaf bread XA1 has a length shorter than the maximum allowable length, then the upper surfaces of the loaf surfaces 521S and 522S are partially replaced by the depressurizing plates 521S and 522S without replacing the deaeration plates 521 and 522 or adjusting their positions. The whole can be pressed uniformly (Fig. (D))

  Further, it is possible to perform degassing in the same state as in FIGS. 7A and 7B without adjusting the position and angle of the air nozzle 75. That is, when the deaeration plates 521 and 522 are in the retracted position, the air blowing is stopped ((c) in the figure), and the deaeration plates 521 and 522 approach each other and press both side surfaces of the bread XA1. During deaeration, the air nozzle 751 is in the same state (position and angle) as in FIGS. 7A and 7B, from the diagonally right rear (downstream side) with respect to the deaeration plate 522 at the opposite position. Blow air. Further, the air nozzle 752 blows air from the diagonal left rear (downstream side) to the degassing plate 521 at the opposite position in the same state (position and angle) as in FIG. As a result, the air is reflected by the deaeration plates 521 and 522 as indicated by the arrow in the figure, and the reflected air is blown onto the packaging material YA1 on the rear surface portion of the loaf bread XA1 to be deaerated (the same figure (( d)).

  The degassing plates 521 and 522 may be adsorption devices. For example, the degassing plate 521 is configured by a flat hollow box-shaped main body and an uneven plate that covers the lower surface of the main body. The concavo-convex plate has comb-shaped concavities and convexities, and suction holes for adsorbing the tubular film are formed in the concave portions. Further, a connection pipe is provided on the upper surface of the main body of the degassing plate 521. A suction blower is connected to the connection pipe via a suction nozzle (not shown). The structure of the degassing plate 522 is also the same. As a result, when the suction blower operates while sandwiching the loaf bread XA1 between the pair of degassing plates 521 and 522, the air in the main body of the degassing plates 521 and 522 is sucked and removed, and the degassing plates 521 and 522 are sucked through the suction holes. The air outside the is sucked into the body. Therefore, the packaging material YA1 located near the adsorption surface is adsorbed and held on the adsorption surfaces of the degassing plates 521 and 522. In this case, one of the deaeration plates 521 and 522 is brought into contact with the loaf bread XA1 via the packaging material YA1, but the other is preferably brought close to the loaf bread XA1 by forming a gap. By doing so, the bread XA1 is displaced during the deaeration by the air nozzle 75 while ensuring the air passage for moving the air inside the packaging material YA1 deaerated by the air nozzle 75 to the upstream side. You can prevent it. Further, the degassing plate 52 shown in FIGS. 3 to 5 may be an adsorption device as described above. In this case, it is advisable to sandwich the loaf bread XA1 between the degassing plate 52 and the conveyor surface of the belt conveyor 12, and to form a gap between the degassing plate 52 and the loaf bread XA1 so as to approach them. By doing so, the bread XA1 is displaced during the deaeration by the air nozzle 75 while ensuring the air passage for moving the air inside the packaging material YA1 deaerated by the air nozzle 75 to the upstream side. You can prevent it.

  In the case where the degassing plates 52, 521 and 522 are used as an adsorption device and the main body of the degassing plates 52, 521 and 522 is a sponge block, the surface of the sponge block may be covered with a material that does not allow air to easily pass through. .

  FIG. 7 is a front view showing another embodiment of the packaging machine 10 and the deaerator 15. In the above embodiment, the configuration including the second deaerator 14 in addition to the first deaerator 15 has been described as an example, but as shown in FIG. 7, the second deaerator 14 (lower part The deaerator 44 and the upper deaerator 45) may not be provided.

  The packaging machine 10 includes a belt conveyer 11 which is an upstream conveyer arranged on the upstream side, a belt conveyer 12 which is a downstream conveyer subsequent to the belt conveyer 11, and an upstream side of the belt conveyer 11. A center seal device (not shown) for center-sealing the material YA1, an end-seal device 13 between both belt conveyors 11 and 12 for end-sealing and cutting the packaging material YA1, and a deaerator for removing air from the packaging material YA1. 15 and so on. The deaerator 15 has the same configuration as the first deaerator 15 described above.

  In this case, the downstream traveling surface 23a does not need to be divided into a plurality of traveling directions, and may be configured so that the loaf bread XA1 can be conveyed from upstream to downstream.

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

  That is, in the above embodiment, the quantity of each component can be changed as appropriate. For example, the deaerating plate 52 of the first deaerator (deaerator) 15 may be operated separately from the end seal device 13 without interlocking with the operation of the end seal device 13.

  Further, the air blowing angle of the air nozzle 75 may be adjustable.

10 Packaging Machines 11 and 12 Belt Conveyor 13 End Sealing Device 14 Second Deaerator 15 First Deaerator 17 Belt 17a Upstream Running Surface 17b Return Surface 18-21 Rollers 23 Belt 23a Downstream Running Surface 23b Return Surface 24-34 Roller 37,38 Sealer 39,40 Holding part 44 Lower degassing device 45 Upper degassing device 46 Lower pushing part 49 Sponge block 50 Cylinder 52 Degassing plate 53 Cylinder 75 Air nozzle XA1 Bread YA1 Packaging material

Claims (6)

A degassing device for removing air from the inside of the packaging material when wrapped by the packaging material while transporting the article on the transport surface,
First deaerating means for sandwiching the packaging material that has packaged the article from the side surface or the upper surface of the article to remove air from the packaging material,
Is disposed on the downstream side in the transport direction of the article, on the downstream side of the packaging material packaging the article, the downstream end and the packaging material at least article by Rukoto blowing air toward the upstream direction of the conveying direction A second deaeration means for evacuating air between
The second degassing means is arranged before Symbol conveying surface or inclined with respect to the first degassing means,
Depending on the shape of the article, the conveying surface or the first degassing means is configured to be capable of reflecting and blowing air, or to be able to directly blow air onto the packaging material.
A degassing device characterized in that The second degassing means is
When the length along the transport direction of the article is the first length, it is arranged at a position where air can be directly blown to the packaging material,
When the length of the article along the transport direction is the second length shorter than the first length, air is blown to the transport surface or the first degassing means, and the transport surface or the Arranged at a position where the air reflected by the first degassing means can be blown to the downstream side of the packaging material,
The degassing device according to claim 1, wherein The second degassing means is configured to interlock with the first degassing means,
The degassing device according to claim 1 or 2, characterized in that. The second deaerating means is fixed to the transport surface,
The degassing device according to claim 1 or 2, characterized in that. The second deaerating means includes an air nozzle, the air nozzle can adjust an air blowing angle, and the air nozzle can adjust a position with respect to a direction perpendicular to the transport direction,
The deaeration device according to claim 1, wherein the deaeration device is a degassing device. A deaerator according to any one of claims 1 to 5,
Center-sealing means for performing center-sealing by bag-making the continuously-supplied strip-shaped packaging material into a tubular shape,
The upstream side conveying means for wrapping the article supplied from the previous step on the downstream side of the center seal means and wrapping it in the packaging material formed into a cylindrical bag, and conveying the article.
A downstream side transporting means for carrying over the article transported by the upstream side transporting means,
Between the upstream side conveying means and the downstream side conveying means, an end seal means for sandwiching and sealing the packaging material from above and below and cutting the packaging material,
The deaerator is arranged downstream of the upstream conveying means,
A packaging machine characterized by that.

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