JP2015016885A - Packaging machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve accurate packaging of a packaging material with a hem without meandering thereof.SOLUTION: A pillow packaging machine 1 is equipped with: a bag-making device 10 in which a belt-like packaging material YA1 provided with hems HE1, HE2, HE3 and HE4 is supplied through a supply port 10a and which superimposes both end edges ED1 and ED2 of the packaging material YA1 thereby forming the packaging material into a cylindrical shape; and a top seal device 15 which performs sealing and cutting of the cylindrically shaped packaging material YA1 in a width direction at intervals according to pitches of articles XA1 supplied to the packaging material YA1. The supply port 10a of the bag-making device 10 is provided with a corner part for so bending the packaging material YA1 as to be deviated from a position where the hems HE2 and HE3 pass.

Description

  The present invention relates to a packaging machine for packaging an article with a packaging material with a hem portion.

  In a line for pillow-wrapping articles such as foods and daily necessities, articles are supplied one after another to a pillow packaging machine and individually pillow-wrapped by a packaging material such as a film to produce a pillow package (see, for example, Patent Document 1). ).

  To the bag making machine of the pillow wrapping machine, the film is successively fed from the original fabric in accordance with the sequential supply of articles, and the bag is formed into a cylindrical shape. Next, in the center seal device, both end edges (center seal portions) in the width direction of the packaging materials stacked on each other are heated while being sandwiched between a pair of bar sealers, and then pressed by a press roller, Sealed (vertical seal). Then, in the top seal device, for each pitch according to the length of the article, the top seal (lateral seal) and cut are performed in the width direction of the packaging material, and the pillow package is manufactured.

  The raw film supplied to the bag making machine is continuously supplied so as to join the article from diagonally above or below, and is folded into the article conveying direction at the tip of the bag making machine, and at the same time made into a cylindrical shape. Bagged.

Japanese Patent No. 5038846 (see FIG. 1) JP 2009-012819 A (see FIG. 1) JP 2007-091305 A (see FIGS. 2 and 3)

  When making a bag with a hem part (edge) (for example, see Patent Document 2 and Patent Document 3), at the tip of the bag making machine, the hem part is located at the left and right corners of the bag making machine. Therefore, there is a problem that the packaging material meanders and stable bag making cannot be performed. In addition, if the top seal is performed in an unstable state, the left and right hems placed on the top and bottom of the article (the ceiling and bottom surfaces of the packaging material formed in a cylindrical shape) are sealed with the positions being shifted from each other. There is a risk that.

  This invention is made | formed in view of the said subject, and it aims at providing the packaging machine which can be packaged correctly, without making the packaging material with a hem part meander.

  (1) According to the present invention, a bag-shaped packaging material in which a hem portion is formed is supplied from a supply port, and both ends of the packaging material are overlapped to form a cylinder, and the package formed into a cylinder A top seal device that seals and cuts the material in the width direction at intervals according to the pitch of the article supplied to the packaging material, and the hem portion at the supply port of the bag making machine The packaging machine is characterized in that a corner portion for bending the packaging material is formed so as to deviate from a position through which the packaging passes.

  According to the present invention, the supply port of the bag making device is bent at the supply port so that the hem portion is displaced from the corner portion because the corner portion is formed so as to be displaced from the position through which the hem portion passes. For this reason, stable bag making can be performed without meandering the packaging material. As a result, the article can be accurately packaged.

  (2) The present invention is also the packaging machine according to the above (1), further comprising a guide member that guides the inner surface of the packaging material that is formed into a cylindrical shape.

  According to the said invention, a packaging material can be sent in the stable state.

  (3) In the packaging machine according to (2), the guide member may include a size adjustment mechanism that adjusts a size according to a size and a shape of a cross section of the packaging material. is there.

  According to the said invention, since the size adjustment mechanism is provided, it can respond to a different packaging size.

  (4) The present invention is also the packaging machine according to (2) or (3), wherein the guide member is disposed at a position separated from the article.

  By the way, there is a specification of a packaging body (a packaging body having a space above the article) that is sufficiently high with respect to the height of the article, depending on the design of the packaging body and the user's request. According to the above invention, even if it is such a specification, an article can be accurately packaged.

  (5) In the present invention, an article support device is provided along the packaging material at least between the guide member and the top seal device, and the article support device travels in the feeding direction of the transport direction. The packaging machine according to any one of (2) to (4), further comprising: a traveling surface that performs a suction and a suction mechanism that sucks the packaging material onto the traveling surface.

  By the way, if the guide member is arranged as close as possible to the top seal device, the packaging material is damaged by the guide member at the time of top sealing. Conversely, when the length of the guide member in the transport direction is short and the distance between the guide member and the top seal device is long, the left and right hem portions may be displaced in the width direction during top sealing. According to the above-described invention, the packaging material can be adsorbed and held by the article support device up to the immediate vicinity of the top seal device. For this reason, it is possible to perform top sealing without causing the hem portion to be displaced. Further, at the time of top sealing, the packaging material that has been adsorbed and held away from the article support device, so that the packaging material is not damaged by the article support device.

  (6) The present invention is also the packaging machine according to any one of (2) to (5), wherein the guide member includes a nozzle that feeds gas into the packaging material.

  According to the said invention, since gas is sent in from a nozzle, even if it is a specification of a packaging body (packaging body which has space inside) large enough with respect to the magnitude | size of an article, it is prevented from being crushed at the time of packaging. So it can be packaged accurately.

  According to the packaging machine described in the above (1) to (6) of the present invention, the packaging material with hem can be accurately packaged without meandering.

It is the schematic of the pillow packaging machine which concerns on embodiment of this invention. It is a perspective view of the back surface of a packaging material. It is an external appearance perspective view of a package. It is a top view of a bag making machine. It is a front view of a bag making machine. It is the side view which looked at the bag making machine from the upstream. It is sectional drawing which looked at the packaging material of another form from which the number of hem parts differs from the upstream, (A) shows the case where a hem part wraps two packaging materials with a normal pillow packaging machine, (B) Indicates a case where the hem portion is packed with three packaging materials by a normal pillow wrapping machine, and (C) shows a case where a hem portion is packed with one packaging material by a reverse pillow wrapping machine. It is the side view which looked at the guide member of another form from the upper stream side, (A) shows the case where there is one nozzle, and (B) shows the case where a pair of nozzles are embedded in the groove on the upper surface of the guide member. (C) shows a case where a pair of holes are formed inside the guide member, and (D) shows a case where a pair of grooves are incorporated inside the guide member.

  Hereinafter, with reference to drawings, the composition of pillow packing machine 1 concerning the embodiment of the present invention is explained. FIG. 1 is a schematic view of a pillow packaging machine 1. In addition, in this figure and each subsequent figure, one part structure is abbreviate | omitted suitably and drawing is simplified. And in this figure and each subsequent figure, the magnitude | size, shape, thickness, etc. of a member are exaggerated suitably and expressed.

  A pillow packaging machine 1 shown in FIG. 1 is used in a line for sequentially packaging articles XA1 such as food and daily necessities. The pillow wrapping machine 1 includes an article supply device 2, a packaging material supply device 3, and a packaging machine body 4.

  Each part of the pillow wrapping machine 1 is comprehensively controlled by a control unit (not shown). The control unit includes a CPU, a RAM, a ROM, and the like, and executes various controls. The CPU is a so-called central processing unit, and various programs are executed to realize various functions. The RAM is used as a work area for the CPU. The ROM stores a basic OS and programs executed by the CPU.

  The article supply device 2 conveys the article XA1 at regular intervals and sequentially supplies the article XA1 to the downstream packaging machine body 4. This article supply apparatus 2 is composed of an overhead conveyor. Specifically, the article supply device 2 includes a conveyance surface 5, a side guide (not shown) for guiding the article XA1 on the conveyance surface 5 from the side, a driving sprocket (not shown), and a follower. A sprocket 6, an annular chain 7 that is hooked on the sprocket, a plurality of fingers 8 that are attached to the chain 7 at equal intervals, and a servo motor (not shown) that serves as a power source. ing.

  The drive sprocket is rotated by the drive of the servo motor. The driven sprocket 6 rotates in conjunction with the driving sprocket as the chain 7 travels. The chain 7 travels so as to circulate by the rotation of the driving sprocket. The plurality of fingers 8 travel on the transport surface 5 as the chain 7 travels. Accordingly, the plurality of fingers 8 push the article XA1 on the transport surface 5 and send it out to the packaging machine body 4.

  The packaging material supply device 3 includes an original fabric shaft 9 that holds the original fabric roll YB1. The original fabric shaft 9 is provided so as to be rotated by a drive motor (not shown), and holds the original fabric roll YB1. Then, the packaging material supply device 3 continuously supplies the packaging material YA1 such as a film drawn out in a strip shape sequentially from the original fabric roll YB1 held on the original fabric shaft 9 to the packaging machine main body 4. As a method of paying out the packaging material YA1 from the original fabric roll YB1, instead of adopting the above-mentioned original fabric driving method, a feed roller is provided separately, and the feed roller is moved to draw out the packaging material YA1. A driving method may be adopted.

  Here, the configuration of the packaging material YA1 will be described with reference to FIG. FIG. 2 is a perspective view of the back surface of the packaging material YA1.

  As shown in FIG. 2, the packaging material YA1 has four hem portions HE1, HE2, HE3, and HE4. The four hem portions HE1 to HE4 are formed at intervals from each other along the longitudinal direction of the packaging material YA1. Then, both end edges ED1 and ED2 in the width direction of the packaging material YA1 are overlapped with each other by the pillow packaging machine 1 to form a center seal portion. Further, the four hem portions HE1 to HE4 respectively constitute four corners, up, down, left, and right.

  Returning to FIG. The packaging machine body 4 packages the article XA1 supplied from the article supply device 2 with the packaging material YA1 supplied from the packaging material supply device 3. Specifically, the packaging machine body 4 includes a bag making device 10, a first transport device 11, a pinch roller 12, a center seal device 13, a first article support device 14, and a top seal device (end seal). Device) 15, a second transport device 16, a second article support device 17, and the like.

  The bag making device 10 forms the packaging material YA1 supplied from the packaging material supply device 3 into a cylindrical shape having a polygonal cross section so that both end edges ED1 and ED2 in the width direction overlap each other. Further, the bag making device 10 supplies the article XA1 supplied from the article supply device 2 to the packaging material YA1 that is bag-formed in a cylindrical shape. Thereby, the article XA1 is wrapped in the packaging material YA1 that is made into a cylindrical shape. The bag making device 10 is a main part of the present invention and will be described in detail later.

  The first transport device 11 is provided downstream of the bag making device 10. The first transport device 11 is a belt conveyor that transports the article XA1 wrapped in the packaging material YA1 by the bag making device 10 toward the top seal device 15 on a transport surface (reference number omitted). The first transport device 11 expands and contracts the transport surface in the transport direction in accordance with the box motion of the top seal device 15.

  The first transport device 11 includes a suction pump (not shown) that functions as a suction mechanism that sucks the article XA1 onto the transport surface. A large number of holes are formed on the transport surface to constitute a vacuum conveyor. As a result, the article XA1 wrapped in the packaging material YA1 is attracted to a large number of holes on the conveying surface by the operation of the suction pump, so that the conveying force is more reliably given and conveyed toward the top seal device 15. Is done.

  The pinch roller 12 is provided downstream of the bag making device 10 and above the first conveying device 11. The pinch roller 12 sandwiches both end edges ED1 and ED2 (center seal portion) of the packaging material YA1 that overlap each other, and applies a conveying force to the center seal portion.

  The center seal device 13 is provided downstream of the pinch roller 12 and above the first transport device 11. Specifically, the center seal device 13 includes a pair of bar sealers 13a and a press roller 13b. The center seal device 13 heats with a pair of bar sealers 13a sandwiching the center seal portion. Then, the center seal device 13 performs center sealing by pressing the heated center seal portion with a press roller 13b.

  The first article support device 14 is provided downstream of the center seal device 13 and above the first transport device 11. Specifically, the first article support device 14 adsorbs the article XA1 to the upper conveyor 14a having a running surface (reference numeral omitted) that runs in the transport direction, that is, in the feeding direction of the packaging material YA1, and the running surface. A suction pump (not shown) that functions as an adsorption mechanism. A large number of holes are formed on the running surface of the upper conveyor 14a to constitute a vacuum conveyor. As a result, the article XA1 wrapped in the packaging material YA1 is attracted to a large number of holes on the running surface by the operation of the suction pump, so that the conveying force is given more reliably and conveyed toward the top seal device 15. Is done. The first article support device 14 expands and contracts the transport surface in the transport direction in accordance with the box motion of the top seal device 15.

  The top seal device 15 performs top seals in the width direction of the packaging material YA1 for each pitch according to the length of the article XA1 by a known box motion that revolves the pair of upper and lower top sealers 15a and 15b along a predetermined locus. End seal, side seal) and cut. Thereby, the pillow package ZA1 shown in FIG. 3 is manufactured. For details of the top seal device 15, refer to, for example, Japanese Patent Application Laid-Open No. 09-286413.

  The second transfer device 16 is provided downstream from the top seal device 15. The second transport device 16 is a belt conveyor that transports the pillow package ZA1 finished by the top seal device 15 onto a transport surface (reference number omitted) and transports it to the next process. Then, the second transport device 16 expands and contracts the transport surface in the transport direction in accordance with the box motion of the top seal device 15.

  The second transport device 16 includes a suction pump (not shown) that functions as a suction mechanism that sucks the article XA1 onto the transport surface. A large number of holes are formed on the transport surface to constitute a vacuum conveyor. As a result, the article XA1 wrapped in the packaging material YA1 is attracted to a large number of holes on the transport surface by the operation of the suction pump, so that a transport force is more reliably applied and transported toward the next process. .

  The second article support device 17 is provided downstream of the top seal device 15 and above the second transport device 16. Specifically, the second article support device 17 includes an upper conveyor 17a having a running surface (not shown) that runs along the conveyance direction, and a suction pump (illustrated) that functions as an adsorption mechanism that sucks the article XA1 on the running surface. (Omitted). And many holes are formed in the running surface of upper conveyor 17a, and it constitutes a vacuum conveyor. As a result, the pillow package ZA1 is attracted to a large number of holes on the traveling surface by the operation of the suction pump, so that the conveying force is given more reliably and is conveyed toward the next step. The second article support device 17 expands and contracts the transport surface in the transport direction in accordance with the box motion of the top seal device 15.

  Next, the configuration of the bag making device 10 will be described with reference to FIGS. 4, 5, and 6. FIG. 4 is a top view of the bag making device 10. FIG. 5 is a front view of the bag making device 10. FIG. 6 is a side view of the bag making device 10 as viewed from the upstream side.

  4 to 6 is formed by bending or bending one or a plurality of metal plates such as stainless steel, or by welding a plurality of metal plates. The upstream side of the bag making device 10 is configured to supply a packaging material YA1 to receive the packaging material YA1 and to form a supply port 10a that receives an article XA1 supplied to the packaging material YA1. Specifically, the bag making device 10 includes a bottom surface 20, a pair of side surfaces 21 and 22, a pair of top surfaces 23 and 24, and the like. The bottom surface 20 constitutes a flat surface. The bottom surface 20 is formed with a pair of corner portions (reference numerals omitted) for bending the packaging material YA1 at a connection portion with each of the pair of side surfaces 21 and 22. The width W of the bottom surface 20 means the distance between a pair of corner portions. The width W of the bottom surface 20 is set to be larger than the width D (see FIG. 3) of the package ZA1. That is, the width W of the bottom surface 20 is set larger than the distance D between the outer edges of the two inner hem portions HE2 and HE3 in the packaging material YA1. That is, the pair of corner portions are formed in the bag making machine 10 (supply port 10a thereof) so as to be displaced from the position through which the hem portions HE2 and HE3 pass. Such a bag making machine 10 receives the packaging material YA1 continuously supplied so as to join the article XA1 from below while being bent in the transport direction at the leading edge 20a of the bottom surface 20. Then, the bag making machine 10 folds the received packaging material YA1 at the hem portions HE1 to HE4 along the conveying direction so as to wrap the article XA1 and overlaps both end edges ED1 and ED2 in the width direction to form a cylinder. Bag it. In this embodiment, the case of the cylindrical bag making machine 10 has been described as an example. However, as shown in FIG. 2 of Japanese Utility Model Publication No. 54-165263, the bag making machine of the present invention has an upper portion. An open U-shape may be used.

  The packaging machine body 4 further includes a guide member 30 and a pair of nozzles 31 provided in the guide member 30. The guide member 30 is a flat plate that penetrates the inside of the bag making device 10 and is provided horizontally. The guide member 30 has a width corresponding to the distance F between the inner edges of the two inner hem portions HE2 and HE3 of the packaging material YA1. And the guide member 30 is being fixed by the arm which abbreviate | omits illustration so that it may be spaced apart from the said goods XA1 above the goods XA1. That is, the guide member 30 is provided on the side where both end edges ED1 and ED2 in the width direction of the packaging material YA1 are overlapped with each other with respect to the article XA1. As a result, the guide member 30 is wrapped in the packaging material YA1 together with the article XA1. That is, the guide member 30 guides the first hem portions HE1 and HE4 from the overlapped end edges ED1 and ED2 in the forward and reverse circumferential directions inside the cylindrical packaging material YA1, respectively. It can be said. In short, it can be said that the guide member 30 guides the inner surface of the packaging material YA1 formed into a cylindrical shape. The pair of nozzles 31 are provided on both sides below the guide member 30, and are integrated with the guide member 30 and wrapped in the packaging material YA1 together with the article XA1. The pair of nozzles 31 sends a gas such as air or an inert gas into a space wrapped in the packaging material YA1. As a result, the gas is filled into the cylindrical packaging material YA1.

  Thus, according to the pillow packaging machine 1, the packaging material YA1 supplied from diagonally below has a width W wider than the distance D between the outer edges of the two inner hem portions HE2 and HE3. The inner two hem portions HE2 and HE3 are bent at the front end edge 20a of the flat bottom surface 20. Thereby, it is prevented that hem part HE2, HE3 is located in the right-and-left corner of the bag making apparatus 10. FIG. For this reason, stable bag making can be performed without meandering the packaging material YA1. As a result, the article XA1 can be accurately packaged.

  And since the position of the orthogonal | vertical direction (width direction) of the conveyance direction of cylindrical packaging material YA1 is controlled by the guide member 30, the width W of the bottom face 20 of the bag making machine 10 is larger than the width D of the packaging material ZA1. Even if it is set, the positions of the left and right hem portions HE2, HE3 arranged above and below can be made to coincide with each other.

  By the way, there is a specification of a packaging body (a packaging body having a space above the article) that is sufficiently high with respect to the height of the article XA1, depending on the design of the packaging body, the user's request, and the like. According to said pillow packaging machine 1, even if it is such a specification, the goods XA1 can be packaged correctly.

  By the way, if the guide member 30 is disposed as close as possible to the top seal device 15, the packaging material YA1 is damaged by the guide member 30 during the top seal. Conversely, if the length of the guide member 30 in the transport direction is short and the distance between the guide member 30 and the top seal device 15 is long, the left and right hem portions HE2 and HE3 may be displaced in the width direction during top sealing. There is. According to the pillow wrapping machine 1 described above, the cylindrical packaging material YA positioned at a predetermined position in the direction perpendicular to the conveying direction (width direction) by the guide member 30 is converted into the top seal device by the first article support device 14. Adsorption can be held up to the nearest 15. For this reason, it is possible to perform top sealing by aligning the positions of the upper and lower hem portions HE2, HE3. Further, at the time of top sealing, the packaging material YA1 that has been adsorbed and held is separated from the first article support device 14, so that the packaging material YA1 is not damaged by the first article support device 14.

  And since gas is sent in from a pair of nozzle 31, even if it is a specification of a packaging body (packaging body which has space inside) large enough with respect to the size of article XA1, it is prevented from being crushed at the time of packaging. So it can be packaged accurately.

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

  That is, in the above embodiment, the position, size, length, shape, material, orientation, and the like of each component can be changed as appropriate. For example, the number of hem portions is not limited to four and may be one to three. Further, the number of hem portions may be four or more, for example, five or six. When at least two hem portions are formed, the packaging material YA1 of the bag making device 10 can be stabilized, and the displacement of the hem portions can be prevented.

  Here, the case where a bag of another form of packaging material having a different number of hem portions is made will be described with reference to FIG. FIG. 7 is a cross-sectional view of another form of packaging material having a different number of hem portions as viewed from the upstream side. FIG. 7A shows a case where the hem portions HE5 and HE6 make two packaging materials YA2 with a normal pillow packaging machine. FIG. 7B shows a case where the hem portions HE7, HE8, and HE9 form three packaging materials YA3 with a normal pillow packaging machine. FIG. 7C shows a case where the hem portion HE10 forms a single packaging material YA4 with a reverse pillow packaging machine.

  The first alternative form will be described. As shown in FIG. 7A, when the packaging material YA2 formed with the two hem portions HE5 and HE6 is formed by a normal pillow packaging machine that performs center sealing under the article XA1, two hems are formed. The portions HE5 and HE6 are positioned on the outer sides of the guide member 30 on both sides of the upper side of the packaging material YA2 formed in a cylindrical shape. In FIG. 7A and FIG. 7B to be described next, the illustration of the bag making device is omitted and the drawing is simplified.

  In this case, meandering of the packaging material YA2 is prevented by the bag making device 10 and the guide member 30 in which the corner portion is formed at a position shifted from the hem portions HE5 and HE6.

  A second alternative form will be described. As shown in FIG. 7 (B), when the packaging material YA3 on which the three hem portions HE7, HE8, HE9 are formed is made by a normal pillow packaging machine that performs center sealing under the article XA1, two pieces are produced. The hem portions HE7 and HE8 are located on both sides of the upper side of the packaging material YA3 formed in a cylindrical shape and outside the guide member 30. The remaining one hem portion HE9 is located on the lower side of the cylindrical packaging material YA3 and inside the corner portion of the bag making machine.

  In this case, in addition to the same effect as that of the first different form, the hem portions HE7 and HE9 which are arranged above and below and in which the position in the width direction of the packaging material YA3 coincides can be packaged. There is an effect.

  A third alternative form will be described. As shown in FIG. 7 (C), a reverse pillow wrapping machine that center-seals the packaging material YA4 on which one hem portion HE10 is formed above the article XA4. When bag making is performed using the bagging device 40, the hem portion HE10 is located at the lower center of the packaging material YA4 that is formed into a cylindrical shape.

  In this case, meandering of the packaging material YA4 is prevented by the bag making device 10 in which the corner portion is formed at a position shifted from the hem portion HE10.

  Or in the said embodiment, although the bag making apparatus 10 has received packaging material YA1 supplied from the downward direction, this invention is not limited to this, It is an aspect which receives the packaging material YA1 supplied from upper direction. May be. In this case, both end edges ED1, ED2 in the width direction of the packaging material YA1 are overlapped with each other below the article XA1.

  Or although the guide member 30 is one flat plate in the said embodiment, you may make it the said guide member 30 have a reinforcement part (bending process, a rib, etc.) which reinforces itself.

  Alternatively, in the above embodiment, the guide member 30 is a single flat plate and is fixed to a certain size, but the present invention is not limited to this. That is, the guide member of the present invention includes a dimension adjusting mechanism that adjusts the dimension in the width direction, and adjusts the dimension in the width direction of the guide member in accordance with the dimensions of the article XA1 and the pillow package ZA1. Also good. When comparing the presence / absence of a dimension adjustment mechanism in the width direction, in the case of a reverse pillow packaging machine having a single guide member that does not have the dimension adjustment mechanism, the problem is that the packaged item is caught in the center seal portion. Is prevented. Alternatively, the guide member of the present invention may include a size adjusting mechanism that adjusts the size according to the size and shape of the cross section of the packaging material YA1. In this case, different packaging sizes can be accommodated.

  Or in the said embodiment, although the case where the pair of nozzle 31 was provided in the lower both sides of the guide member 30 was demonstrated to the example, the number and arrangement | positioning of the nozzle of this invention are not limited to this.

  Here, the guide member of another form is demonstrated using FIG. FIG. 8A shows the case where there is one nozzle 31. FIG. 8B shows a case where the pair of nozzles 31 are embedded in the groove 32 a on the upper surface of the guide member 32. FIG. 8C shows a case where a pair of holes 33 a is formed inside the guide member 33. FIG. 8D shows a case where the pair of grooves 32 a are incorporated in the guide member 34.

  The first alternative form will be described. As shown in FIG. 8A, one nozzle 31 is provided at the center below the guide member 30. The number of nozzles 31 may be three or more.

  A second alternative form will be described. As shown in FIG. 8B, the guide member 32 is thicker than the guide member 30. The guide member 32 has a pair of grooves 32a formed on the upper surface thereof along the flow direction (the front-rear direction in the drawing). The pair of nozzles 31 and a pair of tubes (not shown) that supply gas to the pair of nozzles 31 are respectively embedded in a pair of grooves 32 a formed on the upper surface of the guide member 32.

  A third alternative form will be described. As shown in FIG. 8C, the guide member 33 is thicker than the guide member 30. The guide member 33 is formed with a pair of holes (drilling holes) 33a along the flow direction by, for example, a gun drill. The pair of holes 33a functions as a nozzle.

  A fourth alternative form will be described. As shown in FIG. 8D, the guide member 34 is obtained by covering the guide member 32 with a lid 36 via a seal material 35. Thereby, a pair of groove | channel 32a is integrated in the inside of the guide member 34 as a square hole. The pair of grooves 32a functions as a nozzle.

  Or in the said embodiment, although the case where the article supply apparatus 2 was comprised from an overhead conveyor was demonstrated to the example, the article supply apparatus in this invention is not limited to this, Others, such as a finger conveyor, a belt conveyor, a plate conveyor, etc. You may be comprised from the conveyor of.

1 Pillow packaging machine (packaging machine)
10, 40 Bag making device 14 First article support device 15 Top seal device 20 Bottom (surface)
20a Tip edge 30, 32, 33, 34 Guide member 31 Nozzle XA1 Article YA1, YA2, YA3, YA4 Packaging material HE1, HE2, HE3, HE4, HE5, HE6, HE7, HE8, HE9, HE10 Hem part ED1, ED2 Both ends Edge D, F interval W width

Claims (6)

A bag-shaped packaging material in which a hem portion is formed is supplied from a supply port, and a bag making device having a cylindrical shape by overlapping both end edges of the packaging material;
A top seal device that performs sealing and cutting in the width direction at intervals according to the pitch of the article supplied to the packaging material, with respect to the packaging material that has become a cylindrical shape,
The supply port of the bag making machine is characterized in that a corner portion for bending the packaging material is formed so as to be displaced from a position through which the hem portion passes,
Packaging machine. Characterized in that it comprises a guide member for guiding the inner surface of the packaging material produced in a cylindrical shape,
The packaging machine according to claim 1. The guide member includes a size adjustment mechanism that adjusts the size according to the size and shape of a cross section of the packaging material,
The packaging machine according to claim 2. The guide member is disposed at a position separated from the article,
The packaging machine according to claim 2 or 3. An article support device is provided along the packaging material between at least the guide member and the top seal device,
The article support device includes:
A traveling surface that travels in the feeding direction of the conveying direction;
An adsorption mechanism for adsorbing the packaging material on the running surface,
The packaging machine in any one of Claims 2-4. The guide member includes a nozzle for feeding gas into the packaging material,
The packaging machine in any one of Claims 2-5.

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