JP2017071432A - Deaerator and packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a deaerator which effectively deaerates the inside of a packaging material of articles having different lengths without adjustment of positions even when lengths in the conveyance direction of the articles change, and can suppress deterioration in a component, and to provide a packaging machine having the same.SOLUTION: There is provided a deaerator which includes: first deaeration means which sandwiches a packaging material that packages an article from the side face or the upper face of the article, and evacuates air in the packaging material; and second deaeration means which is arranged on the downstream side in the conveyance direction of the article, and blows air to the downstream side of the packaging material that packages the article to evacuate air, where the second deaeration means is arranged to be inclined to a conveyance surface or the first deaeration means so that the blown air can be reflected by the conveyance surface or the first deaeration means.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a deaeration device and a packaging machine used for a packaging machine or 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 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.

  At the time of this end sealing, a technique is known in which excess air inside the packaging material is removed by a degassing air nozzle and a degassing sponge (see, for example, Patent Document 1).

  However, in the technique described in Patent Document 1, when packaging an article having a certain height, such as bread, it is difficult to effectively remove air from the packaging material without crushing the article. If end sealing is performed with insufficient air deaeration in the packaging material, there is a risk of breaking the bag in a later process (for example, a closure process for squeezing a packaging bag or a process for packaging multiple packaging bags) There is. Therefore, a method is known in which degassing is performed by pressing the upper surface side and the rear surface (downstream surface) side of an article to be conveyed by a pressing device during end sealing (see, for example, Patent Document 2).

Japanese Patent No. 4392525 Japanese Patent No. 576332

  However, depending on the article to be packaged, the length in the conveyance direction of the article may change depending on the increase or decrease of the content. Taking bread as an example of the article, only the length in the conveyance direction of the article changes between packaging 1 kg and packaging 3 kg. In the conventional techniques (Patent Documents 1 and 2), in order to perform sufficient deaeration, a degassing sponge or a pressing device is brought into contact with one side (for example, the rear surface side) of the packaged article in the traveling direction. Since the deaeration has occurred, when the length of the article in the conveying direction changes, it is necessary to move (adjust) the position of the deaeration sponge or the rear pressing device. In some cases, it may be necessary to adjust or replace the position of a deaeration air nozzle or a sponge block that performs deaeration from above the article, resulting in a problem of complicated work.

  Further, the rear pressing device of Patent Document 2 has a cantilever structure in which a contact portion is provided at the tip of a support arm that can rotate in the traveling direction of an article, and a base end portion that serves as a rotation center of the support arm. There was also a problem that deterioration was easy to progress in strength.

  The present invention has been made in view of the above problems, and even if the length in the conveyance direction of an article is changed, deaeration in the packaging material of articles having different lengths without adjusting the position. It is an object of the present invention to provide a deaeration device capable of effectively performing deterioration and suppressing deterioration of parts and a packaging machine including the same.

  (1) The present invention is a deaeration device that vents the air inside the packaging material when the article is wrapped with the packaging material while conveying the article on a conveying surface, and the packaging material packaging the article is the article. A first deaeration unit that sandwiches the air from the side surface or the upper surface of the packaging material and removes the air in the packaging material, and is arranged on the downstream side in the conveying direction of the article, and blows air on the downstream side of the packaging material that packages the article And a second deaeration means for extracting air from the packaging material, wherein the second deaeration means allows the air blown to be reflected by the conveying surface or the first deaeration means. The deaeration device is arranged to be inclined with respect to the transport surface or the first deaeration means.

  According to such a configuration, the article and the packaging material are not damaged, the deaeration is effectively performed, and the deterioration of the parts can be suppressed. Further, even when the length of the article to be conveyed changes in the conveyance direction, the packaging material can be used without changing the first deaeration unit and the second deaeration unit, adjusting the position and angle, etc. The inside deaeration can be performed efficiently.

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

  (3) The degassing apparatus according to (1) or (2), wherein the second degassing unit is configured to be interlocked with the first degassing unit. 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) Further, in the present invention, the second deaeration means includes an air nozzle, and the air nozzle is capable of adjusting an air blowing angle, and the position of the air nozzle can be adjusted with respect to a direction perpendicular to the conveying direction. The deaeration device according to any one of (1) to (4), wherein the deaeration device is provided.

  (6) In the present invention, the deaeration device according to any one of (1) to (5) above and the continuously supplied strip-shaped packaging material are formed into a cylindrical shape to form a center seal. Center sealing means to be applied, upstream conveying means for wrapping and transporting the article supplied from the previous step on the downstream side of the center sealing means in the packaging material formed into a cylindrical shape, and the upstream side An end seal that sandwiches and seals the packaging material from above and below between the downstream conveying means that takes over and conveys the article conveyed by the conveying means, and the upstream conveying means and the downstream conveying means. And a degassing device disposed downstream of the upstream conveying means.

  According to such a configuration, the article and the packaging material are not damaged, the deaeration is effectively performed, and the deterioration of the parts can be suppressed. Further, even when the length of the article to be conveyed changes in the conveyance direction, the packaging material can be used without changing the first deaeration unit and the second deaeration unit, adjusting the position and angle, etc. It is possible to provide a packaging machine for efficiently degassing the inside.

  According to the present invention, even when the length in the conveyance direction of an article is changed, the inside of the packaging material of articles having different lengths is effectively degassed and the parts deteriorate without adjusting the position. An object of the present invention is to provide a deaeration device capable of suppressing the above and a packaging machine including the same.

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 which shows an outline about the other example of the deaeration apparatus which concerns on this invention. It is a front view which shows an outline about the other example of the deaeration apparatus which concerns on this invention. It is a top view which shows an outline about the other example of the deaeration apparatus which concerns on this invention. It is a front view which shows an outline about the other example of the deaeration apparatus which concerns on this invention.

  Hereinafter, a deaeration device and a 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 FIG. FIG. 1 is a front view showing an outline of the packaging machine 10.

  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 (First deaeration device 15 and second deaeration device 14), and the like. 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 the 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 traveling direction of the downstream traveling 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 rotates upon 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 running surface 23a to the return surface 23b. Each of the rollers 24 to 31, 33, 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 is disposed between the belt conveyors 11 and 12 in a fixed position, and the packaging material YA1 formed in a cylindrical shape is disposed in the width direction of the running surfaces 17a and 23a. End seal 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 disks (not shown) that support the sealer 37 via the horizontal axis and rotate around the horizontal axis, and a pair of rotating disks that support the sealer 38 via the holding unit 40 and rotate around the horizontal axis ( (Not shown), a pair of side plates (not shown) arranged on the sides of these rotating disks, a cam floor (not shown) provided at the tip of the shaft of the holding portions 39, 40, and the like. Yes.

  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 a pair of rotating disks (not shown), and revolves around the rotation axis of the rotating disk while maintaining the posture by the rotation of these rotating disks. Go up and down. The holding unit 40 holds the lower part of the sealer 38. The holding unit 40 is also supported at an eccentric position of a pair of rotating disks (not shown), and revolves around the rotation axis while maintaining the posture by the rotation of the rotating disks around the rotation axis. It goes up and down.

  (First Deaeration Device) The first deaeration device 15 shown in FIG. 1 is provided above the upstream side of the belt conveyor 12. The first deaeration device 15 includes first deaeration means (deaeration plate) 52 that pushes the bread pan XA1 from above with a weak force, a cylinder 53 that raises and lowers the deaeration plate 52, and the like. . The deaeration plate 52 is, for example, a sponge block, and a pressing surface 52S for pressing the bread bread XA1 via the packaging material YA1 is provided so as to face the downstream running surface 23a of the belt conveyor 12. The length of the deaeration plate 52 (pressing surface 52S) in the conveyance direction has a length equivalent to the maximum allowable length (for example, a length of 3 kg) of the bread loaf XA1 packaged by the packaging machine 10. . The deaeration plate 52 descends and rises in conjunction with the end seal device 13 so as to approach and separate from the downstream running surface 23a serving as a conveyance surface.

  That is, when the end seal device 13 end-seals and cuts the packaging material YA1, the first degassing device 15 is degassed by the degassing plate 52 reaching the lowest position and pressing the bread XA1 from above with a weak force. I care. In addition, the first degassing device 15 blows air to the downstream side of the packaging material YA1 in which the bread bread XA1 is packaged on the downstream side of the deaeration plate 52 to extract the air in the packaging material YA1 (second degassing device). (Means) 75 is provided. The air nozzle 75 is disposed 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 serving as a conveyance surface of the bread pan XA1. Further, the relative position of the air nozzle 75 with respect to the deaeration plate 52 (position in the conveyance direction, height from the conveyance surface) and the relative angle with respect to the deaeration plate 52 do not change, and the air nozzle 75 is interlocked with the elevation of the deaeration plate 52. Then, it descends and rises so as to approach and separate from the downstream running surface 23a. The air nozzle 75 may be interlocked with the deaeration plate 52 by being fixed to the deaeration plate 52, or may be interlocked with the deaeration plate 52 via an interlocking mechanism.

  In the first deaeration device 15, the air nozzle 75 and the deaeration plate 52 cooperate to perform deaeration. The first deaeration device 15 performs deaeration in cooperation with a second deaeration device 14 described later. That is, the air nozzle 75 blows air to the rear surface portion of the bread pan XA1 (the end surface portion on the downstream side in the conveyance direction of the bread pan XA1) in accordance with the operation timing of the deaeration plate 52 and the second deaeration device 14, and the packaging material. Degassing inside YA1. When the deaeration ends, the air nozzle 75 stops the air blowing and prepares for the next deaeration. The amount of air blown from the air nozzle 75 is sufficient to push out the air inside the packaging material YA1, so that the product bread XA1 and the packaging material YA1 that are products are not damaged.

  Moreover, even if the length of the conveyance direction of the articles | goods (bread) XA1 conveyed is changed, the 1st deaeration apparatus 15 is the 1st deaeration means (deaeration plate 52) and the 2nd. The inside of the packaging material YA1 can be deaerated without changing the deaeration means (air nozzle 75), adjusting the position and angle, and the like. The mode of deaeration of the first deaerator 15 will be described in detail later.

  (Second Degassing Device) The second degassing device 14 is provided on the downstream side of the end seal device 13 and includes a lower degassing device 44 and an upper degassing 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 side running surface 23a divided into a plurality of parts, and includes a long lower pressing part 46 that pushes the packaging material YA1 from below. The upper surface of the lower pressing portion 46 is covered with a sponge sheet (not shown), and the lower pressing portion 46 prevents the packaging material YA1 from being scratched. 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).

  Both ends of the lower push portion 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 has a downstream running surface. It is attached so as to freely advance and retract in the running direction of 23a. This fixed support member advances and retreats integrally with the rollers 24-30.

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

  The raising / lowering support member 64 revolves around the horizontal axis by the revolution of the holding portion 40 around the horizontal axis, and raises the lower push portion 46 by pushing it up from below.

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

  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.

  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.

  In the above-described embodiment, the downstream 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 to the downstream, and is arranged at intervals. You may comprise by several 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 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, when forming the extension part used as the binding allowance for bundling the upper part of a package (packaging bag) with a closure, the bread | pan XA1 is supplied to the packaging material YA1 at some intervals (FIG.2 (b)). )reference).

  The packaging material YA1 is sandwiched from above and below by the second deaeration device 14 in accordance with the end sealing timing. In addition, the bread XA1 is pressed from above by the degassing plate 52 of the first degassing device 15, and the air blown from the air nozzle 75 toward the rear of the bread XA1 obliquely from above, the air in the packaging material YA1 is efficient. 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 are returned 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 second 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 YA <b> 1 vertically sandwiches the packaging material YA <b> 1 vertically. . At this time, 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 can be effectively removed and abnormal tension is applied to one of the upper side and the lower side of the packaging material YA1. It is possible to avoid the action and the bread XA1 is not crushed when the air in the packaging material YA1 is extracted. Furthermore, since the second deaeration device 14 is provided in the region of the belt conveyor 12, it is assumed that the second deaeration device 14 is provided between the belt conveyor 11 and the belt conveyor 12, compared with the case where the belt conveyor 11 and the belt conveyor 12 are provided. There is no need to increase the spacing. 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.

  In the first deaeration device 15, when the end seal device 13 end-seals and cuts the packaging material YA <b> 1, the deaeration plate 52 degass the bread pan XA <b> 1 from above with a weak force, and the air nozzle 75. However, air is blown on the rear surface portion of the bread pan XA1 to degas the packaging material YA1. At this time, the amount of air blown out is sufficient to push out the air inside the packaging material YA1, so that the product can be effectively degassed without damaging the bread Bread XA1 and the packaging material YA1. .

  In addition, as in the prior art, a pressing device having a cantilever structure in which a contact portion is provided at the distal end of a support arm that can rotate in the traveling direction of an article, the base end portion that becomes the rotation center of the support arm is strong in strength. Although there is a problem that deterioration tends to proceed, according to the present embodiment, since the structure of a cantilever is not adopted, deterioration of components of the deaeration device can be suppressed.

Further, the first deaeration device 15 is configured so that the first deaeration means (deaeration plate 52) and the second deaeration unit 15 are the same even when the length of the conveyed article (bread) XA1 in the conveyance direction changes. The inside of the packaging material YA1 can be deaerated without changing the deaeration means (air nozzle 75), adjusting the position and angle, and the like. 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 conveyance direction is set to the maximum allowable length (for example, a length of 3 kg) of the packaged bread XA1. The air nozzle 75 is rotated around the horizontal axis, for example, around the horizontal axis with respect to the downstream running surface 23a in the vertical plane (in the plane perpendicular to the downstream running surface 23a serving as the transfer surface), and the air outlet is set upstream. The air outlet 75 is inclined so as to be lower than the rear end portion of the air nozzle 75, and blown obliquely from above to the downstream side running surface 23a. At this time, the position of the air nozzle 75 and the angle with respect to the downstream side running surface 23a (or the deaeration plate 52) are such that the length along the conveyance direction of the bread pan XA1 is the first length (for example, the maximum allowable length). In this case, a second length (for example, a length corresponding to 1 kg) at a position and an angle at which air can be blown directly onto the packaging material YA1 and the bread bread XA1 is shorter than the first length. ), The air is blown to the downstream running surface 23a, and the air and the air reflected by the downstream running surface 23a are set to a position and an angle at which the air can be blown to the downstream side of the packaging material YA1. The air nozzle 75 may have a structure that can move in a direction perpendicular to the conveying direction (position adjustment is possible) and that can adjust the air blowing angle.

  This will be specifically described with reference to FIG. FIG. 3 is a schematic front view showing an extracted main portion of the first degassing device 15 that performs degassing in the packaging material YA1 in which the bread breads XA1 having different lengths in the transport direction are packaged. (a), (b) is a case where the bread bread XA1 having a maximum length (for example, a length of 3 kg) allowed for packaging by the packaging machine 10 is degassed. , (D) shows a case where deaeration of bread bread XA1 shorter than the maximum length (for example, a length corresponding to 1 kg) is performed.

  In the following examples and modifications, the illustration of the downstream side running surface 23a is simplified.

  As shown in FIGS. 4A and 4B, the length of the deaeration plate 52 (pressing surface 52S) in the conveying direction is equal to the maximum allowable length of the bread bread XA1 packed by the packaging machine 10. Have Therefore, in the case of the bread bread XA1 having the maximum length, the bread bread XA1 wrapped with the packaging material YA1 is conveyed to the deaeration position (below the deaeration plate 52) (FIG. 5A), and the deaeration plate 52 is When lowered, the entire upper surface of the pressing surface 52S is pressed evenly and degassed ((b) in the figure).

  Further, the air nozzle 75 interlocked with the deaeration plate 52 is in a position where the deaeration plate 52 descends and depresses the bread pan XA1, and the air blown out from the air nozzle 75 (also interferes with the deaeration plate 52). (Without) the position and angle at which the packaging material YA1 on the rear surface of the bread pan XA1 is directly sprayed obliquely from above.

  Accordingly, when the deaeration plate 52 is in the retracted position, the air nozzle 75 retracts upward together with the air nozzle 75 and stops blowing out air (FIG. 1A). Then, when the deaeration plate 52 is lowered and depressing the upper surface of the bread pan XA1, the air nozzle 75 is lowered together with the deaeration plate 52, and as shown by the arrow in FIG. Air is blown directly from above on the packaging material YA1 on the rear surface, and the interior of the packaging material YA1 is deaerated by air pressure.

  Thus, according to the first deaeration device 15 of the present embodiment, the air in the packaging material YA1 can be efficiently deaerated by the deaeration plate 52 and the air nozzle 75. Further, since the bread pan XA1 is suppressed from above via the packaging material YA1 by the deaeration plate 52, it is possible to prevent the bread pan XA1 from being moved by the air ejected from the air nozzle 75.

  As shown in FIG. 6C, even when the length of the bread Bread XA1 is changed (when it is shortened), the position of the deaeration plate 52 is not adjusted, and FIG. ) Can be degassed in the same state. That is, even in the case of the bread bread XA1 whose length is shorter than the maximum allowable length (for example, a length corresponding to 1 liter), the bread bread XA1 wrapped with the packaging material YA1 is in the deaeration position (deaeration plate 52). When the sheet is conveyed to the lower part (FIG. 3C), the deaeration plate 52 is lowered. At this time, if the bread bread XA1 is shorter than the permissible maximum length, the entire upper surface of the bread bread XA1 is evenly covered by a part of the pressing surface 52S without replacing the deaeration plate 52 or adjusting the position. It can be pressed ((d) in the figure).

  Further, deaeration can be performed in the same state as in FIGS. 5A and 5B without adjusting the position and angle of the air nozzle 75. The position and angle of the air nozzle 75 are such that when the bread pan XA1 is long (in the case of the first length) during degassing (FIGS. (B) and (d)), the blown air is wrapped. When the length of the bread XA1 is short (in the case of the second length) so as to reach the material YA1 directly, the blown air is against the downstream running surface 23a where the packaging material YA1 is not disposed. The air is blown obliquely from above, and the air is reflected by the downstream running surface 23a so that it can be blown to the downstream side of the packaging material YA1 for packaging the bread bread XA1 (and the amount of air blown). It is fixed.

  That is, when the deaeration plate 52 is in the retracted position, it is retracted upward together with stopping the air blowing ((c) in the same figure), and the deaeration plate 52 is lowered to cover the upper surface of the bread pan XA1. When deaeration is performed by pressing, the air nozzle 75 descends together with the deaeration plate 52 and blows air from the obliquely upper side to the downstream running surface 23a. As a result, as shown by the arrows in the figure, the air is reflected by the downstream side running surface 23a, and the air reflected on the packaging material YA1 on the rear surface of the bread pan XA1 is blown and degassed ((d )).

  Also in this case, the air in the packaging material YA1 can be efficiently deaerated by the deaeration plate 52 and the air nozzle 75. Further, since the bread pan XA1 (packaging material YA1) is suppressed from above by the deaeration plate 52, it is possible to prevent the packaging material YA1 from being moved by the air that is ejected from the air nozzle 75 and reflected by the downstream running surface 23a.

  Thus, even if the length of the packaged bread Bread XA1 changes, parts replacement of the first deaeration device 15 (deaeration plate 52 and air nozzle 75) and adjustment of the position and angle are performed. Therefore, deaeration can be performed efficiently.

Since the deaeration plate 52 is provided at the first length (the maximum allowable length), when the length of the bread YA1 is shortened as shown in FIG. If the air nozzle 75 is moved upstream so as to blow air directly on the air, it may interfere with the deaeration plate 52. In the present embodiment, even when the length of the bread YA1 is shortened, the air nozzle 75 is not moved, but air is blown obliquely from above to the downstream running surface 23a, and is reflected by the downstream running surface 23a. Since the air is blown against the packaging material YA1, the deaeration plate 52 and the air nozzle 75 do not interfere with each other.
(Modification)

  A modification of the first deaeration device 15 will be described with reference to FIGS. 4 to 7 are schematic views showing the main part of the first deaeration device 15 extracted, FIGS. 4 and 5 are front views, FIG. 6 is a top view, and FIG. FIG. Moreover, in each of FIGS. 4 to 7, (a) and (b) show the deaeration when the bread Bread XA1 has the first length (for example, the maximum allowable length (for example, 3 minutes)). (C), (d) is a figure which shows deaeration in case bread loaf XA1 is 2nd length (for example, 1 serving).

  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 with the deaeration plate 52. A bracket 102 extending in a direction perpendicular to the conveyance 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 around the horizontal axis from the vertical direction with respect to the downstream running surface 23 a serving as the transport surface in the vertical plane, and directs the outlet toward the upstream side. Is attached so that air is blown obliquely from above to the downstream running surface 23a. However, in this case, the outlet of the air nozzle 75 is attached at 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 in the vertical direction with respect to the transport surface, but the air nozzle 75 does not move with respect to the transport surface. Since the configuration other than this is the same as that of the embodiment shown in FIG.

  When the article (bread bread XA1) has the first length, the bread bread XA1 packed with the packaging material YA1 is transported to the deaeration position (below the deaeration plate 52) (FIG. 5A). The air plate 52 is lowered, and the entire upper surface of the bread Bread XA1 is pressed evenly by the entire pressing surface 52S to be deaerated ((b) in the figure).

  The air nozzle 75 is fixed at a position and an angle at which the blown air (without interfering with the deaeration plate 52) is directly blown obliquely from above to the packaging material YA1 on the rear surface portion of the first bread loaf XA1. When the deaeration plate 52 descends and presses the upper surface of the bread pan XA1, the air nozzle 75 blows air against the downstream running surface 23a, so that the packaging material on the rear surface of the bread pan XA1 Air is blown directly on YA1 from obliquely above to be deaerated ((b) in the figure).

  As shown in FIG. 6C, even when the length of the bread Bread XA1 is changed (when it is shortened), the position of the deaeration plate 52 is not adjusted, and FIG. ) Deaerate in the same state.

  That is, when the bread bread XA1 packed with the packaging material YA1 is conveyed to the deaeration position (below the deaeration plate 52) ((c) in the figure), the deaeration plate 52 is lowered. At this time, if the bread bread XA1 is shorter than the permissible maximum length, the entire upper surface of the bread bread XA1 is evenly covered by a part of the pressing surface 52S without replacing the deaeration plate 52 or adjusting the position. Can be pressed ((d) in the figure)

  Further, deaeration can be performed in the same state as in FIGS. 5A and 5B without adjusting the position and angle of the air nozzle 75. That is, when the deaeration plate 52 is in the retracted position, the blowing of air is stopped ((c) in the same figure), and the deaeration plate 52 is lowered and deaerated by pressing the upper surface of the bread pan XA1. Sometimes, the air nozzle 75 blows air from the diagonally upper side to the downstream running surface 23a. As a result, as shown by the arrows in the figure, the air is reflected by the downstream side running surface 23a, and the air reflected on the packaging material YA1 on the rear surface of the bread pan XA1 is blown and degassed ((d )).

  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 disposed above the downstream running surface 23 a serving as a conveyance surface, but the air nozzle 75 may be disposed below the downstream running surface 23 a. In this case, the air blown out from the air nozzle 75 is not blocked by the downstream running surface 23a but is blown to the packaging material YA1. For example, the downstream running surface 23a forms a conveying surface by arranging two belts so as to be separated from each other so that the central portion is separated from the lower belt (downstream running surface 23a) between the two belts 23 (central portion). The air nozzle 75 is arranged at a position deviated from the above.

  In addition, the belt 23 which comprises a conveyance surface may be two or more, and the several air nozzle 75 may be arrange | positioned.

  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 conveying direction, or air nozzles 75 having a rectangular opening may be arranged.

  In the vertical plane, the air nozzle 75 rotates around the horizontal axis from the vertical direction with respect to the downstream running surface 23a (or the deaeration plate 52) serving as a conveying surface to direct the blowing port toward the upstream side. The air nozzle 75 is tilted so as to be higher than the rear end portion of the air nozzle 75, and is attached so that air is blown obliquely downward from the downstream running surface 23a (deaeration plate 52).

  When the bread pan XA1 has the first length, the air nozzle 75 blows the blown air directly from the lower side of the packaging material YA1 on the rear surface of the bread pan XA1, and the length of the bread pan XA1 is the second length. In this case, the blown air is blown obliquely from below to the deaeration plate 52, and the air is reflected by the deaeration plate 52 and can be blown to the downstream side of the packaging material YA1 for packaging the bread 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. Since the configuration other than this is the same as that of the embodiment shown in FIG.

  When the article (bread bread XA1) has the first length, the bread bread XA1 packed with the packaging material YA1 is transported to the deaeration position (below the deaeration plate 52) (FIG. 5A). The air plate 52 is lowered, and the entire upper surface of the bread Bread XA1 is pressed evenly by the entire pressing surface 52S to be deaerated ((b) in the figure).

  The air nozzle 75 is fixed at a position and an angle at which the blown air is directly blown obliquely from below to the packaging material YA1 on the rear surface portion of the first length of bread Bread XA1, and the deaeration plate 52 descends to lower the bread bread XA1. When the air nozzle 75 blows air against the bread pan XA1 from between the downstream running surfaces 23a when the top surface of the bread pan is deaerated, the packaging material YA1 on the rear surface portion of the bread pan XA1 is obliquely below. Direct air is blown to deaerate (FIG. 5B).

  As shown in FIG. 8C, even when the length of the bread bread XA1 changes (when it becomes shorter), the same state as in FIG. 9A is obtained without adjusting the position of the deaeration plate 52. Deaerate with.

  That is, when the bread bread XA1 packed with the packaging material YA1 is conveyed to the deaeration position (below the deaeration plate 52) ((c) in the figure), the deaeration plate 52 is lowered. At this time, if the bread bread XA1 is shorter than the permissible maximum length, the entire upper surface of the bread bread XA1 is evenly covered by a part of the pressing surface 52S without replacing the deaeration plate 52 or adjusting the position. Can be pressed ((d) in the figure)

  Further, deaeration can be performed in the same state as in FIGS. 5A and 5B without adjusting the position and angle of the air nozzle 75. That is, when the deaeration plate 52 is in the retracted position, the blowing of air is stopped ((c) in the same figure), and the deaeration plate 52 is lowered and deaerated by pressing the upper surface of the bread pan XA1. Sometimes, the air nozzle 75 blows air to the deaeration plate 52 from obliquely below. As a result, the air is reflected by the deaeration plate 52 as shown by the arrows in the figure, and the air reflected on the packaging material YA1 on the rear surface of the bread pan XA1 is blown and degassed ((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 degassing plates 521 and 522 are arranged 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 serving as the conveying surface. Deploy. The pair of degassing plates 521 and 522 are provided so as to advance and retreat in the width direction of the downstream running surface 23a, and hold the both side surfaces of the bread pan XA1 with the pair of degassing plates 521 and 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. Each of the air nozzles 751 and 752 is rotated about the vertical axis from the transport direction in the horizontal plane (in a plane parallel to the downstream running surface 23a serving as the transport surface) to direct the air outlet toward the upstream side. , 752 so as to be inside (the center side of the conveying surface) from the rear end portion, and attached to the deaeration 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 deaeration 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. Also good. Since 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, when the bread XA1 packed with the packaging material YA1 is conveyed to the deaeration position (side of the deaeration plates 521 and 522) (FIG. 5A). ), The pair of degassing plates 521 and 522 are close to the bread pan XA1, and the entire pressing surfaces 521S and 522S are pressed and degassed by the entire side surfaces of the bread pan XA1 evenly (see FIG. 4B). ).

  The air nozzles 751 and 752 are at positions and angles at which the blown air is directly blown from the left diagonally rear (downstream side) and right diagonally rearward (downstream side) to the packaging material YA1 on the rear surface portion of the first bread loaf XA1. When the degassing plates 521 and 522 are close to each other and press the both side surfaces of the bread pan XA1, the air nozzles 751 and 752 are directed to the bread pan XA1 from both sides of the downstream running surface 23a. By blowing air, the packaging material YA1 on the rear surface portion of the bread bread XA1 is directly blown from the right diagonally rear and the left diagonal rear to deaerate (FIG. 2B).

  As shown in FIG. 8C, even when the length of the bread bread XA1 changes (when it becomes shorter), the position of the deaeration plates 521 and 522 is not adjusted, and FIG. Deaerate in the same state.

  That is, when the bread bread XA1 packed with the packaging material YA1 is conveyed to the deaeration position (below the deaeration plates 521 and 522) (FIG. 5C), the deaeration plates 521 and 522 move forward and approach each other. . At this time, if the bread bread XA1 is shorter than the maximum allowable length, the upper surface of the bread bread XA1 is partially covered by the pressing surfaces 521S and 522S without exchanging the degassing plates 521 and 522 and adjusting the position. The whole can be pressed evenly ((d) in the figure)

  Further, deaeration can be performed in the same state as in FIGS. 5A and 5B 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 (FIG. 5C), and the deaeration plates 521 and 522 come close to each other and press both side surfaces of the bread pan XA1. During deaeration, the air nozzle 751 is in the same state (position and angle) as in FIGS. 5A and 5B, obliquely from the rear right side (downstream side) with respect to the deaeration plate 522 at the opposite position. Blow air. Further, the air nozzle 752 blows air from the rear left side (downstream side) to the deaeration 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 shown by the arrows in the figure, and the reflected air is blown and deaerated on the packaging material YA1 on the rear surface portion of the bread pan XA1 (see FIG. d)).

  The deaeration plates 521 and 522 may be suction devices. For example, the deaeration plate 521 includes a flat hollow box-shaped main body and an uneven plate that covers the lower surface of the main body. The concavo-convex plate is formed with concavities and convexities in a comb-like shape, 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 deaeration plate 521. A suction blower is connected to the connection pipe via a suction nozzle (not shown). The configuration of the deaeration plate 522 is the same. Accordingly, when the suction blower is operated with the bread pan XA1 sandwiched 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 through the suction holes. The outside air is sucked into the main body. Therefore, the packaging material YA1 located in the vicinity of the adsorption surface is adsorbed and held on the adsorption surfaces of the degassing plates 521 and 522. In this case, either one of the deaeration plates 521 and 522 is brought into contact with the bread bread XA1 via the packaging material YA1, but the other is preferably made close to the bread bread XA1 by forming a gap. In this way, the bread pan XA1 is displaced when the air nozzle 75 degass while ensuring an air passage for moving the air inside the packaging material YA1 deaerated by the air nozzle 75 to the upstream side. Can be prevented. Moreover, you may make the deaeration plate 52 shown in FIGS. 3-5 into an adsorption | suction apparatus as mentioned above. In this case, it is preferable to sandwich the bread pan XA1 between the deaeration plate 52 and the conveyor surface of the belt conveyor 12, and to make the deaeration plate 52 approach the bread pan XA1 with a gap. In this way, the bread pan XA1 is displaced when the air nozzle 75 degass while ensuring an air passage for moving the air inside the packaging material YA1 deaerated by the air nozzle 75 to the upstream side. Can be prevented.

  In the case where the deaeration plates 52, 521, and 522 are used as suction devices, and the main body of the deaeration 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 pass through. .

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

  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 15 and the like. The deaeration device 15 has the same configuration as the first deaeration device 15 described above.

  In this case, the downstream running surface 23a does not need to be divided into a plurality of running directions and may be configured so that the bread loaf 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 thereof.

  That is, in the above embodiment, the quantity of each component can be changed as appropriate. For example, the deaeration plate 52 of the first deaeration device (deaeration device) 15 may operate independently of the end seal device 13 without being linked to the operation of the end seal device 13.

  The air blowing angle of the air nozzle 75 may be adjustable.

DESCRIPTION OF SYMBOLS 10 Packaging machine 11,12 Belt conveyor 13 End seal apparatus 14 Second deaeration apparatus 15 First deaeration apparatus 17 Belt 17a Upstream side running surface 17b Return surface 18-21 Roller 23 Belt 23a Downstream side running surface 23b Return surface 24-34 Roller 37, 38 Sealer 39, 40 Holding part 44 Lower deaeration device 45 Upper deaeration device 46 Lower push part 49 Sponge block 50 Cylinder 52 Deaeration plate 53 Cylinder 75 Air nozzle XA1 Bread YA1 Packaging material

Claims (6)

A deaeration device that vents the air inside the packaging material when wrapped with the packaging material while conveying the article on the conveyance surface,
First deaeration means for sandwiching the packaging material in which the article is packaged from a side surface or an upper surface of the article to release air in the packaging material;
A second deaeration unit disposed on the downstream side in the conveying direction of the article, and blows air to the downstream side of the packaging material packaging the article to release the air in the packaging material,
The second deaeration unit is disposed to be inclined with respect to the transfer surface or the first deaeration unit so that the blown air can be reflected by the transfer surface or the first deaeration unit. ,
A deaeration device characterized by that. The second deaeration means includes
If the length along the conveying direction of the article is the first length, it is arranged at a position where air can be directly blown against the packaging material,
When the length along the conveyance direction of the article is a second length shorter than the first length, air is blown against the conveyance surface or the first deaeration means, and the conveyance 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 deaeration device according to claim 1. The second degassing means is configured to be interlocked with the first degassing means;
The deaeration device according to claim 1 or 2, characterized by the above. The second deaeration means is fixed to the transport surface,
The deaeration device according to claim 1 or 2, characterized by the above. The second deaeration means includes an air nozzle, and the air nozzle can adjust the blowing angle of air, and the position of the air nozzle can be adjusted with respect to the direction perpendicular to the conveying direction.
The deaeration device according to claim 1, wherein the deaeration device is provided. A deaeration device according to any of claims 1 to 5,
Center sealing means for continuously forming the belt-shaped packaging material supplied into a cylindrical shape and applying a center seal;
Upstream conveying means for wrapping and conveying the article supplied from the previous step on the downstream side of the center sealing means in the packaging material formed into a cylindrical shape;
Downstream transport means for taking over and transporting the article transported by the upstream transport means;
An end seal means that sandwiches and seals the packaging material from above and below between the upstream conveying means and the downstream conveying means; and
The deaeration device is arranged downstream of the upstream conveying means,
A packaging machine characterized by that.

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