JP7100905B2 - Bag making machine and horizontal pillow wrapping machine - Google Patents

Description

The present invention relates to a bag making machine and a horizontal pillow wrapping machine for wrapping and packaging an article in a material.

Patent Document 1 describes a horizontal pillow packaging machine. The horizontal pillow wrapping machine includes an article transporting and feeding device, a bag making device (bag making machine), a film supply device, a center sealing device, and a holding belt.

The article transporting and feeding device is configured to include a plurality of pressing fingers attached at predetermined pitches to an endless chain hung on a sprocket arranged below the transport surface. The pressing finger moves forward with its tip protruding above the transport surface, and when the tip of the pressing finger hits the rear surface of the article, the article also moves forward on the transport path. When the pressing finger reaches the carry-out end on the downstream side, it rotates and falls, and revolves in a posture in which the tip faces downward.

A bag making device is arranged on the downstream side of the article transporting and feeding device, and the bag making device superimposes (polymerizes) both end edges of the band-shaped film by passing the band-shaped film continuously supplied from the film supply device. ), And make a bag of the tubular film.

The center seal device is a bar sealer for heating both end edges of the laminated strip film by sandwiching and rotating both end edges of the polymerized strip film while applying a predetermined tension to the strip film. , Send both end edges. In addition, the restraining belt restrains the article in the tubular film from being lifted upward.

JP-A-2019-182537

By the way, various forms of the article are assumed, and the function of the restraining belt is to prevent the article from being lifted upward. Therefore, especially when the article is small (small in the height direction), the restraining belt is used. It must be placed low so that it is close to the transport surface.

As described above, when the holding belt is arranged low, a step in the height direction may be formed between the upper surface of the bag making machine and the holding surface (lower surface) of the transport belt. Then, the strip-shaped film supplied from the film feeder passes at an angle between the entrance of the bag making machine and the inlet of the holding belt so as to be gradually lowered, and the tip of the pressing finger interferes with the strip-shaped film. Will end up. Then, since the pressing fingers are sequentially moved, the strip-shaped film and the pressing fingers may or may not interfere with each other, which causes the strip-shaped film to undulate and cause packaging failure.

When a belt-type article feeding means is used on the upstream side of the bag making machine instead of the pressing finger, the inclined strip-shaped film hits the article, causing misalignment and resulting in packaging failure.

Therefore, an object of the present invention is to provide a bag making machine and a horizontal pillow packaging machine that suppress packaging defects.

The present invention is a bag making machine used for a horizontal pillow wrapping machine that wraps an article using a strip-shaped material, and has an article feeding unit arranged on the upstream side and feeds the article laterally and an article arranged on the downstream side. The strip-shaped material is placed between the holding portion and the strip-shaped material supply portion arranged above, and the strip-shaped material supplied from the strip-shaped material supply portion is inserted, and both end edges thereof are inserted. It is a bag making machine that superimposes each other, and is provided with a bag making machine main body having a ceiling member, and in any region from the upstream side entrance of the bag making machine main body to the upstream side entrance of the holding portion. It is characterized by being provided with a lifting member that lifts the strip-shaped material toward the ceiling member.

According to the configuration of the bag making machine of the present invention, the band-shaped material supplied from the band-shaped material supply unit is inserted into the bag-making machine main body, the article is sent from the article feeding unit, and the edge portions on both sides of the band-shaped material are connected to each other. When the article is prevented from being raised through the strip-shaped material by being polymerized by the holding portion, the strip-shaped material is placed in any region from the upstream entrance of the bag making machine main body to the upstream entrance of the holding portion. Since the lifting member for lifting toward the ceiling member is provided, the strip-shaped material can be lifted, the strip-shaped material can be suppressed from interfering with the article or the like, and the packaging defect for the article can be suppressed.

In the bag making machine of the present invention, the lifting member can adopt a configuration having a shape along the ceiling member in the width direction of the bag making machine main body.

According to the above-mentioned bag making machine, since the lifting member has a shape along the ceiling member in the width direction of the bag making machine main body, the band-shaped material is made into a shape along the ceiling member of the bag making machine to surely manufacture the band-shaped material. You can lift it while bagging it.

In the bag making machine of the present invention, the bag making machine main body has a rectangular cross section, is provided with slits for overlapping both side edge portions of the strip-shaped material, and the lifting member is inside the bag making machine main body. Therefore, it is possible to adopt a configuration extending from the upstream entrance of the bag making machine main body to the slit.

According to the above-mentioned bag making machine, the lifting means is inside the bag making machine main body and extends from the upstream entrance of the bag making machine main body to the slit, so that it is used as a guide for making a bag of strip-shaped material. Can be done.

The horizontal pillow packaging machine of the present invention is arranged on the downstream side of the article feeding section for laterally feeding the article and the feeding direction of the article feeding section, and is manufactured into a tubular shape by superimposing both end edges of the strip-shaped material. A bag-making machine for bagging, a band-shaped material supply unit arranged above the bag-making machine and supplying the band-shaped material to the bag-making machine, and a bag-making machine arranged on the downstream side in the feeding direction of the bag-making machine. A holding portion for holding the article from above, which is arranged in the tubular material in the shape of a bag, is provided in any region from the upstream entrance of the bag making machine to the upstream entrance of the holding portion. It is characterized by being provided with a lifting means for lifting the strip-shaped material sent from the bag making machine to the holding portion upward.

According to the configuration of the horizontal pillow packaging machine of the present invention, the strip-shaped material supplied from the strip-shaped material supply section is supplied to the bag making machine, the article is sent from the article feeding section, and the edge portions on both sides of the strip-shaped material are connected to each other. When the article that has been overlapped and placed in the strip-shaped material by the holding portion is held down from above, the strip-shaped material is moved upward in any region from the upstream entrance of the bag making machine to the upstream entrance of the holding portion. Since the lifting means is provided, the strip-shaped material can be lifted, the strip-shaped material can be suppressed from interfering with the article, and the packaging defect of the article can be suppressed.

According to the bag making machine according to the present invention, a lifting member for lifting the strip-shaped material toward the ceiling member is provided in any region from the upstream side entrance of the bag making machine main body to the upstream side entrance of the holding portion. Since the strip-shaped material can be lifted, it is possible to suppress packaging defects for the article.

According to the horizontal pillow packaging machine according to the present invention, since the strip-shaped material is provided with a lifting means for lifting the strip-shaped material upward in any region from the upstream side entrance of the bag making machine to the upstream side entrance of the holding portion, the strip-shaped material is provided. Since it is possible to lift the item, it is possible to suppress packaging defects for the article.

It is a schematic front view of the horizontal pillow packaging machine which concerns on one Embodiment of this invention. It is sectional drawing which shows the relationship between the bag making machine main body and a lifting member in the bag making machine of the same horizontal pillow packaging machine. It is a top view which shows the relationship between the bag making machine of the horizontal pillow packaging machine, and a pressing body. It is a schematic plan view of the same horizontal pillow packaging machine. It is a top view which showed the cross section of the bag making machine main body of the same horizontal pillow packaging machine.

Hereinafter, the bag making machine and the horizontal pillow packaging machine according to the embodiment of the present invention will be described with reference to FIGS. 1 to 5. Since the bag making machine 1 is provided in the horizontal pillow wrapping machine 2, the outline of the horizontal pillow wrapping machine 2 will be described here.

As shown in FIG. 1, the horizontal pillow packaging machine 2 includes an article feeding section 4 that guides the article 3 toward the downstream side in the transport direction, and a bag making machine 1 arranged on the discharging side of the article feeding section 4. A strip-shaped material supply unit 6 arranged above the bag-making machine 1 for supplying the strip-shaped material 5 to the bag-making machine 1, a vertical sealer 7 arranged on the downstream side of the bag-making machine 1, and a vertical sealer 7 A feed conveyor (holding section) 8 arranged on the downstream side of the feed conveyor 8 and a horizontal sealer 9 arranged on the downstream side of the feed conveyor 8 are provided.

The article feeding section 4 is conveyed one by one from the divided supply section (not shown) in which the articles 3 arranged on the upstream side thereof are handled one by one. The article feeding unit 4 has an endless chain 12 as a roller chain in which a transport surface 10 for feeding the article 3 to the downstream side is arranged above and is hung on a plurality of sprockets 11 arranged below the transport surface 10. The endless chain 12 is provided with a plurality of pressing bodies (also referred to as “attachments”) 13 attached at predetermined pitch intervals.

The pressing body 13 is formed in the shape of a vertically long rod, and in the present embodiment, is formed in a substantially rectangular cuboid shape. The pressing body 13 is arranged at predetermined intervals with respect to the endless chain 12, and includes a link mechanism (reference numeral omitted) for connecting the pressing body 13 and the endless chain 12. In this way, the pressing body 13 and the endless chain 12 cooperate with each other to rotate the pressing body 13 in an endless manner, and when the pressing body 13 moves back and forth to the transport surface 10 and reaches the transport surface 10, the pressing body 13 becomes Stand up.

The pressing body 13 moves forward in a state of protruding above the transport surface 10, and when the pressing body 13 hits the rear surface of the article 3, the article 3 also moves forward on the transport surface 10. When the pressing body 13 reaches the discharge side end 12A of the article feeding portion 4 (endless chain 12), it rotates and falls, returns to the upstream side in a fallen posture, and protrudes upward again on the transport surface 10. Revolve around.

As described above, the bag making machine 1 is arranged on the discharge side (downstream side in the feeding direction) of the article feeding unit 4, and has a bag making machine main body (also referred to as a homa) 14 and a lifting member (corresponding to a lifting means). It is equipped with 15. The bag-making machine main body 14 and the lifting member 15 have a function of forming a tubular material 5 supplied from the strip-shaped material supply unit 6 into a cylindrical shape and polymerizing both side edge portions 5a of the strip-shaped material 5. Further, the bag making machine main body 14 and the lifting member 15 are arranged directly above the transport surface 10.

In the present embodiment, the upstream portion of the bag making machine 1 overlaps the downstream portion of the article feed section 4 in the vertical direction, and extends to the downstream side of the discharge side end 12A of the article feed section 4. That is, the article feeding unit 4 is configured to be able to feed the article 3 to the inside of the bag making machine 1.

As shown in FIG. 2, the bag making machine main body 14 includes a ceiling member 16, side members 17 and 17 on both sides in the width direction with respect to the feed direction, and a bottom member 18, and has a cross section orthogonal to the feed direction (width direction). Is a rectangular shape. The ceiling member 16, the side members 17, 17 and the bottom member 18 are parallel to each other along the transport surface 10.

The ceiling member 16 has a rectangular flat plate shape in a plan view. The ceiling member 16 is separated from the transport surface 10 by a predetermined distance. Then, as shown in FIG. 1, the upstream end of the ceiling member 16 is the upstream inlet 14a of the bag making machine main body 14, and the strip-shaped material 5 is inserted into the bag making machine main body 14.

The side members 17 and 17 will be described in more detail. As shown in FIG. 2, the side members 17 and 17 are vertically configured on both sides in the width direction of the ceiling member 16 of the bag making machine main body 14, and as shown in FIG. 1, the side members 17 and 17 and the inclined surface portion 17A on the upstream side. A support surface portion 17B integrally formed on the downstream side of the inclined surface portion 17A is provided.

The inclined surface portion 17A is formed in a plate shape, and its upstream end coincides with the upstream side inlet 14a of the bag making machine main body 14. The lower end of the inclined surface portion 17A is provided with a lower inclined portion 19 inclined downward toward the downstream side on the lower surface.

The support surface portion 17B has a plate shape, is formed in a rectangular shape when viewed from the side, and is integrally extended to the downstream side of the inclined surface portion 17A.

The bottom member 18 is supported by the bottom of the support surface portions 17B of the side members 17 and 17, and is integrally formed so as to face inward in the width direction of each support surface portion 17B. Each bottom member 18 includes a width direction surface portion 20 facing in the width direction and a slit forming surface portion 20A facing each other in the width direction to form the slit 21.

The width direction surface portion 20 includes an inwardly inclined portion 20a inclined inward in the width direction on the downstream side from the inlet portion of the lower inclined portion 19 of the inclined surface portion 17A, and is formed in a triangular shape in a plan view. The slit-forming surface portion 20A is rectangular in a plan view, and is integrally formed at the downstream end of the widthwise surface portion 20. The inner sides of the slit-forming surface portions 20A are separated from each other through a gap, and are used as slits 21 used for superimposing both side edge portions 5a (see FIG. 1) of the strip-shaped material 5. A gap δ3 facing each other in the width direction is formed in the slit 21. The upstream end of the slit 21 is the slit start point 21a.

As described above, the upstream end of the ceiling member 16 of the bag making machine main body 14 is the upstream side inlet 14a of the bag making machine main body 14, the downstream end of the ceiling member 16 and the downstream end of the support surface portion 17B. , The downstream end of the slit forming surface portion 20A coincides in the vertical direction, and these downstream ends are the downstream outlet 14b of the bag making machine main body 14.

Next, the lifting member 15 will be described with reference to FIGS. 1 and 2. The lifting member 15 includes a lifting member main body 14A inserted into the bag making machine main body 14 and an extension portion 22 extending to the upstream side of the bag making machine main body 14. The lifting member main body 14A is inserted into the bag making machine main body 14 through a predetermined gap. The lifting member main body 14A includes a support ceiling member 23 and a support side member 24.

The support ceiling member 23 has a plate shape and is parallel to the ceiling member 16. The support ceiling member 23 is arranged on the ceiling member 16 of the bag making machine main body 14 via an upper gap 27 at a predetermined interval. The support side member 24 has a plate shape and is parallel to the support surface portion 17B. The support side member 24 is arranged on the support surface portion 17B of the bag making machine main body 14 via a width gap 28. Further, the lower end of the support side member 24 is arranged with respect to the bottom member 18 of the bag making machine main body 14 via a lower gap 29.

The upper gap 27, the width gap 28, and the lower gap 29 are distances at which the strip-shaped material 5 (thickness) can sufficiently enter, and the distance between the slits 21 of the bottom member 18 in the bag making machine main body 14 is also the strip-shaped material 5. It is a distance that both side edge portions 5a of the above can enter.

Then, the discharge side end 12A of the article feeding portion 4 and the downstream end portion of the lifting member main body 14A are set at the same position in the transport direction of the article 2.

The extension portion 22 has the same configuration as the lifting member main body 14A, and is extended to the upstream side of the bag making machine main body 14. The extension portion 22 is provided with a mounting member 25 extended in the width direction on the upper surface in order to mount the lifting member 15 to another portion of the horizontal pillow packaging machine 2, and is fastened to another portion by bolts 26 ( See FIGS. 1 and 4). The extension member 22 is located on the upstream side of the upstream entrance 14a of the bag making machine main body 14.

The bag making machine 1 passes the band-shaped material 5 supplied from the band-shaped material supply unit 6. At this time, the extension portion 22 of the lifting member 15 is used as a guide, and as shown in FIG. 1, the upstream side inlet 14a of the bag making machine main body 14 is used as an inlet, and the lower inclined portion 19 of the inclined surface portion 17A is used as an entrance to form a slit. Both side edge portions 5a of the strip-shaped material 5 are polymerized in the gap δ3 of 21. Further, the strip-shaped material 5 is inserted into the upper gap 27, the width gap 28, and the lower gap 29 between the bag making machine main body 14 and the lifting member 15.

By the way, the pressing body 13 rotates and collapses when it reaches the discharge side end 12A of the article feeding portion 4. The discharge side end 12A is a position where the pressing body 13 retracts downward from the transport surface 10, and the article 3 is placed on the strip-shaped material 5 and delivered. In the present embodiment, as shown in FIG. 3, the discharge side end 12A is located upstream of the slit start point 21a of the slit 21 by a distance shorter than half of the feed direction length of the article 3. Further, as described above, the discharge side end 12A of the article feeding portion 4 and the downstream end portion of the lifting member main body 14A are set at the same position. Therefore, the pressing body 13 is separated upstream from the slit start point 21a by a distance shorter than half the length in the feeding direction of the article 3, and rotates and falls down at the discharge side end 12A.

Returning to FIG. 1, the strip-shaped material supply unit 6 applies a predetermined tension to the original roll 30 arranged above the bag making machine main body 14 and the strip-shaped material 5 unwound from the original roll 30. It is provided with an adjusting roller 31 that guides the strip-shaped material 5 toward the bag making machine 1. Further, the strip-shaped material 5 is a film, but as another example, paper or the like thicker than the film can be considered.

As described above, the strip-shaped material 5 unwound from the raw roll 30 passes through the upper gap 27, the width gap 28, and the lower gap 29 of the bag making machine 1, and the bottom member 18 of the bag making machine main body 14. By passing through the slit 21 of the above, both side edge portions 5a are joined by the slit 21, and the strip-shaped material 5 becomes the tubular material 5A.

The vertical sealer 7 is also referred to as a center sealing device, and in the strip-shaped material 5, both side edge portions 5a are combined and sealed. The vertical sealers 7 are arranged below the transport surface 10 and are provided in pairs in the width direction. The vertical sealer 7 includes a pair of pinch rollers 33 arranged on the upstream side and the downstream side, and a bar sealer (vertical welding device) 34 between the pinch rollers 33. The pinch roller 33 applies tension to the strip-shaped material 5 and imparts a conveying force to the strip-shaped material 5 by sandwiching the edge portions 5a on both sides with a predetermined force and rotating the pinch roller 33.

Here, returning to the explanation of the pressing body 13, when the pressing body 13 reaches the discharge side end 12A of the endless chain 12, the pressing body 13 rotates and falls to the upstream side, but the pressing body 13 has a collapsed posture. At that time, as shown in FIG. 3, it is configured to deliver at least half of the article 3 to the bottom member 18. In the present embodiment, since the pressing body 13 is separated upstream from the slit start point 21a by a distance shorter than half the feed direction length of the article 3, the distance dimension δ1 on the downstream side of the article 3 and the article 3 The distance dimension δ2 on the upstream side is such that the distance dimension δ1> the distance dimension δ2. In this way, since the article 3 is placed on the strip-shaped material 5 mounted on the bottom member 18, the article 3 is conveyed to the downstream side by the drive device on the downstream side of the pinch roller 33.

As shown in FIG. 1, the feed conveyor 8 is configured to prevent the article 3 from being lifted upward. The feed conveyor 8 includes a lower feed conveyor 8A and an upper feed conveyor 8B arranged above the lower feed conveyor 8A.

The lower feed conveyor 8A is extended in the width direction and includes a feed surface (feed belt) 35 having the same height as the transport surface 10, and the feed surface 35 is a plurality of lower pulleys arranged in the transport direction. Driven by 36. The start of the feed surface 35 of the lower feed conveyor 8A corresponds to the upstream inlet 35a of the feed conveyor 8. The upper feed conveyor 8B is extended in the width direction and is driven by a plurality of upper pulleys 37 arranged in the transport direction.

The upper feed conveyor 8B is wrapped with a cushioning material 38 that prevents damage to the article 3, and includes a holding surface 3a that suppresses the lifting of the article 3. The upper pulley 37 of the upper feed conveyor 8B is configured to be vertically movable depending on the size of the article 3 (size in the height direction).

In the present embodiment, the holding surface 3a of the upper feed conveyor 8B is located at a position lower than the ceiling member 16 of the bag making machine main body 14. Specifically, the holding surface 3a is set to a height lower than the upper end of the pressing body 13 protruding upward from the conveying surface 10.

The horizontal sealer 9 is also referred to as a top seal device, and has a pair of upper rotary shafts 39 and lower rotary shafts 40 arranged so as to sandwich the tubular material 5A vertically, and an upper horizontal sealer 41 attached to the upper rotary shaft 39. A lower lateral sealer 42 attached to the lower rotary shaft 40 is provided. The upper rotation shaft 39 and the lower rotation shaft 40 rotate in synchronization with each other, and the upper horizontal sealer 41 and the lower horizontal sealer 42 sandwich the tubular material 5A in which the article 3 is built up and down in the width direction and seal it. By doing so, each article 3 is individually wrapped (pillow-wrapped).

The outline of packaging the article 3 in the horizontal pillow packaging machine 2 will be described. First, the strip-shaped material 5 of the raw roll 30 is passed through the bag making machine 1. At this time, as described above, the strip-shaped material 5 is inserted into the upper gap 27, the width gap 28, and the lower gap 29 between the bag making machine main body 14 and the lifting member 15 using the extension portion 22 of the lifting member 15 as a guide. , Both side edge portions 5a of the strip-shaped material 5 are aligned by the slit 21.

In this way, the article 3 is sent into the strip-shaped material 5 by the pressing body 13 from the article feeding portion 4, the both end edges 5a are welded by the vertical sealer 7, and the strip-shaped material 5 is the tubular material 5A. The tubular material 5A is fed by the pinch roller 33, the article 3 is suppressed from being lifted upward by the feed conveyor 8, and the article 3 is individually packaged by the horizontal sealer 9.

Further, in the article 3 (the article 3 having a low height direction), even if the upper feed conveyor 8B is set low, the tubular material 5A is formed at the discharge side end 12A of the article feed section 4 and the upstream side inlet 35a of the feed conveyor 8. Although the upper surface 5b of the above surface is slanted downward toward the downstream side, the band-shaped material 5 inserted through the upper gap 27 is a support ceiling member 23 between the upstream side inlet 14a and the discharge side end 12A of the bag making machine main body 14. It is lifted to the ceiling member 16 side of the bag making machine main body 14 by being supported by. Therefore, the tubular material 5A is not located below the support ceiling member 23. Therefore, even if the pressing body 13 sent in the transport direction reaches the discharge side end 12A and falls down to the upstream side, the pressing body 13 and the upper surface 5c of the strip-shaped material 5 do not come into contact with each other.

The pressing body 13 is in a posture of tilting upstream toward the discharge side end 12A of the article feeding portion 4, and the discharge side end 12A and the downstream end of the lifting member main body 14A are set at the same position. Therefore, it is best to lift the strip-shaped material 5 at the discharge side end 12A of the endless chain 12 at a position where the pressing body 13 does not interfere with the strip-shaped material 5.

As described above, the pressing body 13 does not come into contact with the upper surface 5c of the strip-shaped material 5, and the strip-shaped material 5 passes through the gap between the bag making machine main body 14 and the lifting member 15. Specifically, the ceiling member 16 of the bag making machine main body 14 has an upper gap 27 at a predetermined interval, the width gap 28 between the side members 17 and 17 of the bag making machine main body 14 and the support side member 24, and the bag making machine main body. It passes through the lower gap 29 with respect to the bottom member 18 of 14. Therefore, the shape of the strip-shaped material 5 follows the direction (that is, a rectangle) along the inner surface of the bag making machine main body 14. That is, the upper gap 27, the width gap 28, and the lower gap 29 serve as guides for the strip-shaped material 5, and the strip-shaped material 5 can be formed into a rectangular shape.

Then, since the edge portions 5a on both sides of the strip-shaped material 5 are surely inserted into the slit 21 and fitted to each other, the bar-shaped material 5 in which the article 3 is housed is surely welded to the bar sealer 34 in the vertical sealer 7, and the strip-shaped material is surely welded. In No. 5, since welding by the upper lateral sealer 41 and the lower lateral sealer 42 in the lateral sealer 9 is surely performed, packaging defects are suppressed.

Moreover, when the article 3 is small, when the pressing body 13 is in the tilted posture, the pressing body 13 makes the article 3 at least half the length in the feeding direction of the article 3 with respect to the bottom member 18. Since the article 3 is separated to the upstream side by a shorter distance, the article 3 is placed on the strip-shaped material 5 mounted on the bottom member 18, so that the article 3 is delivered to the downstream side. Further, since the bag making machine main body 14 which is larger than the article 3 and the lifting member 15 (lifting member main body 14A) are used to form a (square shape) along the inner surface of the bag making machine main body 14, FIGS. As shown by, it is possible to package the article 3 in a large size according to the shape of the bag making machine 1.

The present invention is not limited to the above embodiment, and various modifications can be made without departing from the gist of the present invention. In addition, the specific configuration of each part is not limited to the above embodiment.

For example, in the above embodiment, an example of the lifting member 15 is given as corresponding to the lifting means. However, other means can be considered as the lifting means. This includes an example using a gas (air). For example, instead of providing the lifting member 15, a suction port is arranged in a region corresponding to the discharge side end 12A of the endless chain 12 in the ceiling member 16 of the bag making machine main body 14, and the band-shaped material 5 is provided by this suction port. Can also be sucked.

In the above embodiment, the lifting member 15 is inserted from the upstream side of the bag making machine main body 14 to the position corresponding to the discharge side end 12A. However, the lifting member 15 can be composed of only the extension portion 22 and the support ceiling member 23 (the support side member 24 can be omitted). Also in this case, it is possible to prevent the upper surface 5c of the strip-shaped material 5 from interfering with the pressing body 13.

In the above embodiment, the case where the lifting portion member 15 is provided from the upstream side inlet 14a of the bag making machine main body 14 to the discharge side end 12A has been described, but the present invention is not limited to this, and for example, the discharge side end 12A is provided from the upstream side. It can be provided so as to straddle the downstream side, or it can be provided on the downstream side of the discharge side end 12A. Specifically, it can be provided from the upstream side inlet 14a of the bag making machine main body 14 to the downstream side outlet 14b of the bag making machine main body 14. Alternatively, it may be provided between the downstream outlet 14b of the bag making machine main body 14 and the upstream inlet 35a of the feed conveyor 8. Further, it can be provided at a position on the upstream side by a predetermined distance from the discharge side end 12A.

In any case, the strip-shaped material 5 may be lifted in any area from the entrance of the bag making machine 1 to the entrance of the holding portion. In particular, the band-shaped material 5 is lifted along the ceiling member 16 of the bag-making machine 1 from the entrance of the bag-making machine 1 to the delivery position where the article feeding unit 4 places the article 3 on the band-shaped material 5. Therefore, packaging defects are suppressed.

In the above embodiment, the lifting member 15 is provided. However, instead of the lifting member 15, a roller that rotates (or does not rotate) about the horizontal axis in the width direction with respect to the side members 17 and 17 is provided so as to lift the strip-shaped material 5 toward the ceiling member 16. It can also be provided. The rollers may be singular or plural in the horizontal axis direction, and the rollers may be provided by reciprocating the side members 17 and 17 in the transport direction. When there is only one roller, it is arranged so as to correspond to the transport direction of the pressing body 13. As for the diameter of the roller, it is necessary that the pressing body 13 is arranged with a gap on the inner surface of the ceiling member 16, and in particular, the strip-shaped material 5 is inserted between the upper surface of the roller and the inner surface of the ceiling member 16.

Then, at the start of packaging of the strip-shaped material 5, the roller is moved to the upstream side, the strip-shaped material 5 is sent to the downstream side, and the roller is also sent to the downstream side. Even with this configuration, the strip-shaped material 5 is lifted along the ceiling member 16 of the bag making machine 1, so that packaging defects are suppressed.

In the above embodiment, the article feeding unit 4 includes an endless chain 12 spanned by a plurality of sprockets 11 arranged below the transport surface 10, and a pressing body 13 attached to the endless chain 12 at predetermined pitch intervals. It is a configuration equipped with. However, the article feeding portion 4 may be a belt without providing the pressing body 13. In this case, when the article 3 is conveyed, the upper portion on the downstream side of the article 3 and the upper surface 5c of the strip-shaped material 5 inserted into the bag making machine 1 may interfere with each other. However, in the present invention, since the lifting means is provided, the upper portion of the article 3 and the upper surface 5c of the strip-shaped material 5 do not interfere with each other.

In the above embodiment, the lifting member 15 is inserted from the upstream side of the bag making machine main body 14 to the position corresponding to the discharge side end 12A. The lifting member 15 may be provided in a region between the downstream outlet 14b of the bag making machine 1 and the upstream inlet 35a of the holding portion. In this case, the lifting means is not limited to the case where the bag making machine 1 is configured, and may be a member different from the bag making machine 1.

In the above embodiment, the case where the cross section of the bag making machine 1 orthogonal to the feeding direction is rectangular has been described, but the cross section of the bag making machine 1 may be circular or elliptical. In this case, the cross section of the lifting member 15 in the feeding direction is also circular or elliptical so that the strip-shaped material 5 can be passed between the inner circumference of the bag making machine main body 14 and the outer circumference of the lifting member 15. A gap is provided, and the strip-shaped material 5 is guided along the inner peripheral shape of the bag making machine main body 14 in this gap.

1 ... Bag making machine, 2 ... Horizontal pillow packaging machine, 3 ... Article, 4 ... Article feeding part, 5 ... Band-shaped material, 5a ... Both end edges, 5A ... Cylindrical material, 5b ... Top surface, 5c ... Top surface, 6 ... strip-shaped material supply unit, 7 ... vertical sealer, 8A ... lower feed conveyor, 8B ... upper feed conveyor, 9 ... horizontal sealer, 10 ... transport surface, 12 ... endless chain, 12A ... discharge side end, 13 ... pressing body, 14 ... Bag making machine body, 14a ... Upstream side entrance, 15 ... Lifting member, 16 ... Ceiling member, 17, 17 ... Side member, 18 ... Bottom member, 19 ... Downward inclined surface, 20 ... Width direction surface, 21 ... Slit , 22 ... Extension, 23 ... Support ceiling member, 24 ... Support side member, 27 ... Upper gap, 28 ... Width gap, 29 ... Lower gap, 33 ... Pinch roller, 34 ... Versila, 35 ... Feed surface, 35a ... Upstream Side entrance, 38 ... cushioning material, 41 ... upper horizontal ceiling, 42 ... lower horizontal ceiling

Claims (4)

An article feed section arranged on the upstream side and having a transport surface on which the article is placed, a pressing body that pushes the article laterally on the transport surface and feeds the article to the discharge side end of the article feed section, and an article arranged on the downstream side. It is a bag making machine used for a horizontal pillow packaging machine having a holding portion for holding down from above and a strip-shaped material supply section arranged above, and is arranged between the article feeding section and the holding section.
The strip-shaped material supplied from the strip-shaped material supply section is formed in a cylindrical shape so as to cover the periphery of the article sent by the article feeding section, and the upper portion of the tubular material in the strip-shaped material is located above the article. Equipped with a bag making machine body equipped with a ceiling member to make bags,
The ceiling member is arranged so as to vertically overlap with the discharge side end of the article feeding portion.
In any region from the upstream side entrance of the bag making machine main body to the upstream side entrance of the holding portion, it corresponds to at least above the discharge side end of the upper part of the strip-shaped material formed in a cylindrical shape. A bag making machine characterized by being provided with a lifting member that lifts a portion toward the ceiling member. The bag making machine according to claim 1, wherein the lifting member has a shape along the ceiling member in the width direction of the bag making machine main body. The bag making machine main body has a rectangular cross section, and is provided with slits for polymerizing both end edges of the strip-shaped material.
The bag-making machine according to claim 1 or 2, wherein the lifting member is inside the bag-making machine main body and extends from the upstream entrance of the bag-making machine main body to the slit. An article feed section having a transport surface on which the article is placed and a pressing body that pushes the article on the transport surface laterally and feeds the article to the discharge side end of the article feed section.
The strip-shaped material is arranged in a downstream side in the feeding direction of the article feeding section, and the strip-shaped material is made into a cylindrical bag so as to cover the periphery of the article sent by the article feeding section, and the article in the tubular strip-shaped material is manufactured. A bag making machine equipped with a ceiling member that makes a bag at the upper part located above,
A strip-shaped material supply unit that is arranged above the bag-making machine and supplies the strip-shaped material to the bag-making machine.
A holding portion for holding the article from above, which is arranged on the downstream side in the feeding direction of the bag making machine and is arranged in the tubular material in the shape of a bag, is provided.
The ceiling member is arranged so as to vertically overlap with the discharge side end of the article feeding portion.
In any region from the upstream entrance of the bag making machine to the upstream entrance of the holding portion, the upper part of the strip-shaped material sent from the bag making machine to the holding portion and made into a cylindrical bag. Among them, a horizontal pillow wrapping machine comprising a lifting means for lifting at least a portion corresponding to the upper side of the discharge side end upward .

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