JPH08133242A - Product packaging apparatus - Google Patents

Abstract

PURPOSE: To reduce the space for casing by removing excessive air sealed in a bag. CONSTITUTION: Numerous bunches of respective leeks N are sequentially transferred to a synthetic resin wrapping film (f) bent into a triangle pole, both lengthwise ends of the film (f) are continuously heat-fused by respective seam rollers 40 of a vertically fusing unit 7, an upper face of the film (f) is pressed by deairing roller 8 for deairing, and the wrapping film (f) is fused and cut with predetermined intervals by a laterally fusing unit 9 for sequentially separating into numerous packing bags F. Further after the wrapping film (f) immediately before separating and the bags F immediately after separation are pressed by a deairing conveyer 10 for deairing, the respective deaired bags F are transferred and supplied to a casing process by a carry-out conveyer 11. That is, since the bags are compressed and excessive air is removed at the time of packaging, the respective bags F become less bulky, thereby reducing a casing space, reducing the transportation cost and improving the transportation efficiency.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an article packing machine used for packing articles such as leeks, burdock roots, radishes, carrots, Chinese cabbage, spinach, chrysanthemums, high vegetables and komatsuna.

[0002]

2. Description of the Related Art Conventionally, as a method of packaging leeks as in the above-mentioned example, for example, the leeks bundled together are put into a packaging bag formed of a synthetic resin such as polyvinyl chloride or polyethylene. There is a way to package them in a batch.

[0003]

However, when the leeks bundled together as described above are packaged in a synthetic resin packaging bag, air is enclosed together in the packaging bag during packaging. Not only that, but the air is also contained in the hollow part of the green onion put into the packaging bag, so that the entire bag is greatly expanded by the amount of the enclosed air. When packaging a packaging bag without deaerating excess air, the packaging bag is bulky by the amount of air enclosed in the packaging bag, so the number of packaging bags per box is reduced and the transportation cost of the packaging bag is increased. However, there is a problem that the transportation efficiency is deteriorated.

In view of the above problems, the present invention reduces the space for packaging the bag by degassing the air in the bag-shaped packaging film during the packaging of articles.
An object of the present invention is to provide an article packaging machine capable of reducing transportation cost and improving transportation efficiency.

[0005]

According to the first aspect of the present invention,
At a position facing the packaging film formed into the bag shape,
It is an article packaging machine provided with a film pressing means for pressing the upper surface side of the packaging film.

According to the invention described in claim 2, in addition to the operation described in claim 1, an article packing machine in which a degassing hole for degassing the air in the bag body is formed in the bag body formed separately. Is characterized in that.

According to a third aspect of the present invention, in addition to the structure of the first aspect, a rotation for pressing the film pressing means while rotating the upper surface side of the bag-shaped packaging film in the feeding direction. It is an article packaging machine constituted by a body.

According to a fourth aspect of the present invention, in addition to the structure according to the third aspect, an elastic body that deforms corresponding to an article accommodated in the packaging film is provided on the pressing side peripheral surface of the rotating body. The present invention is characterized in that it is a peripherally arranged article packaging machine.

[0009]

In the article packaging machine according to the first aspect of the present invention, by driving the film pressing means to deaerate excess air in the packaging film formed into a bag shape, the bag body to be separated and formed is low in bulk. Therefore, the space required for packaging can be reduced.

The article packaging machine according to a second aspect of the invention, together with the operation of the first aspect, forms a deaeration hole in a part of the bag body to be formed separately, so that the air in the bag body can be easily removed. I can feel it.

According to the third aspect of the present invention, in addition to the operation of the first aspect, the rotating body is rotationally driven in the feed direction to sequentially press the bag-shaped packaging film from one end side. By degassing by using this method, the bag formed separately becomes bulky, and the space for packing the bag can be reduced.

In the article wrapping machine according to a fourth aspect of the invention, in combination with the action of the third aspect, the wrapping film formed into a bag shape is sequentially pressed by a rotating body, and the articles stored in the wrapping film. Since the air is depressurized by pressing in a shape corresponding to, the excess air in the packaging film can be surely degassed, and the bag body that is separated and formed becomes bulky.

[0013]

According to the present invention, since excess air in the bag-shaped packaging film is degassed at the time of packaging the article, the bag can be downsized according to the degassing amount of air. It is possible to reduce the bulk of the degassed bag as in the present invention as compared with the case of packing the bag without degassing the excess air as in the conventional example, which is required for packing the bag. Space can be reduced. In addition, since the space required for packaging is small, the number of packaging bags per box can be increased to reduce the transportation cost and improve the transportation efficiency.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings. The drawings show, as an example of an article, an article wrapping machine used for wrapping a large number of leeks bundled together into one, and in FIGS. 1 and 2, the article wrapping machine 1 is A large number of bundles of each green onion N ... Are sequentially placed on the carry-in conveyor 3 arranged on the carry-in side, and the synthetic resin packaging film f is pulled out from the roll supply section 4 arranged at the lower part of the same side, and the upper part of the same side The wrapping film f is bent into a triangular tubular shape by the film shaping plate 5 installed on the. The green onions N ... Carried by the carry-in conveyor 3 are sequentially placed on the packaging film f bent in the triangular tubular shape, and the packaging film f bent in the triangular tubular shape is conveyed by the feed conveyor 6. The film is adsorbed and held on the surface and supplied in the feeding direction, and the longitudinal welding units 7 arranged at the upper portion of the same position continuously heat weld the longitudinal side ends of the packaging film f in the feeding direction. The packaging film f is continuously pressed and degassed by the degassing roller 8 mounted on the rear portion of the same position, and the packaging film f is welded and cut at predetermined intervals by the horizontal welding unit 9 arranged at the rear portion of the same position. A large number of individual packaging bags F ... Are sequentially separated (see FIG. 10). Each packaging bag F is sequentially depressurized by the degassing conveyor 10 arranged at the rear of the same position, and is degassed by the unloading conveyor 11 arranged on the unloading side of the machine body 2. Are sequentially placed and conveyed and supplied to a boxing step (not shown).

The above-mentioned carrying-in conveyor 3 has a feed belt 3c between a drum roll 3a mounted on the starting end of the loading side of the machine body 2 and a drum roll 3b mounted on the terminal end of the loading side.
Is stretched, and the feed belt 3c is rotationally driven in the feed direction by the driving force of a drive motor (not shown) with a reduction gear.

The above-mentioned film supply unit 4 is, for example, a roll of a packaging film f formed of a synthetic resin such as polyvinyl chloride or polyethylene, and two support rollers 12 axially supported at the lower stage of the roll. , 12, a roll-shaped packaging film f is rotatably held. Further, the packaging film f is stretched between the pair of feed rolls 13 and 13 axially supported on the upper part of the same section via the plurality of guide rolls 14, 15, 16, 17, and 18, respectively. The end portion on the drawer side is stretched on a film shaping plate 5 described later, and the packaging film f is continuously supplied in the feeding direction by the rotational force of the feed rolls 13 and 13.

The above-mentioned film shaping plate 5 is, as shown in FIGS. 3 and 4, a support frame 19 erected on the film supply section 4 side.
The bottom guide plate 20 is horizontally laid in parallel to the feed direction at the upper end of the feed conveyor 3 in the vicinity of the feed end and the feed conveyor 6 described later.
The side surface guide plates 21 and 21 are installed close to both end portions of the bottom surface guide plate 20, and both end portions of a screw shaft 22 mounted on the center portion on the lower surface side of the bottom surface guide plate 20 and the side surface guide plates. Each nut portion 23 fixed to the central portion on the lower surface side of 21, 21
23 is screwed together, and the adjusting handle 24 is fixed to one end side of the screw shaft 22. In other words, the screw shaft 22 is normally or reversely rotated by the turning operation of the adjustment handle 24, and the side guide plates 21, 21 screwed to both ends of the screw shaft 22 are screw-fed in the left-right direction and bundled into one. The guide intervals of the side surface guide plates 21 and 21 are variably adjusted according to the size of the obtained spring onion N.

The above-mentioned feed conveyor 6 is provided with a drum roll 25 which is axially mounted near the feed-side end portion of the film shaping plate 5 and an axis which is positioned near the feed-side start end portion of the carry-out conveyor 11 described later. A feed belt 27 is stretched between the stretched drum rolls 26, and a large number of intake holes 27a are formed at predetermined intervals on the entire length of the feed surface of the feed belt 27. In addition, a suction box 28 formed in a hollow shape is disposed close to the lower surface of the feed belt 27 on the transport side, and a large number of suction boxes 28 are provided on the upper surface side of the suction box 28 so as to face the respective intake holes 27a of the feed belt 27. Are formed at predetermined intervals, and the suction blower 29 and the suction box 28 arranged at the bottom of the machine body 2 are connected by a suction duct 30. That is, the suction action of the suction blower 29 sucks outside air through the suction holes 27a of the feed belt 27 and the suction holes 28a of the suction box 28, and the negative pressure generated on the conveying surface side of the feed belt 27 The longitudinal center surface of the packaging film f is suction-held and supplied in the feeding direction.

As shown in FIGS. 5 and 6, the above-described vertical welding unit 7 has a unit main body which has a vertical seam position set on the central conveying surface of the above-mentioned feed conveyor 6 and is arranged above the same position. A rotary shaft 32 is rotatably vertically supported on the feeding side of 31, and a rotary shaft 33 is rotatably vertically supported on the lower surface side of a movable plate 34 connected to the coaxial side portion. Stretch the spring 35 between the
Each pinch roller 36, 36 fixed to the lower end of each rotary shaft 32, 33 is urged to rotate in a direction in which the pinch rollers 36, 36 face each other, and each pin 37, fixed to the upper end of each pinch roller 36, 36,
37 is rotationally biased in a direction in which the teeth mesh with each other.

The rotary shafts 38 and 39 are rotatably vertically supported on the delivery side of the unit main body 31, and the rotary shafts 3 and
Seam rollers 40, 40 fixed to the lower ends of 8, 39
Are opposed to each other, and the gears 41, 41 fixed to the upper ends of the rotary shafts 38, 39 are meshed with each other. That is,
By the driving force of the drive motor 42 with a reduction gear arranged on one side, the pinch rollers 36, 36 and the seam rollers 40, 40 are synchronized in the feed direction via the sprockets 43, 44, 45 and the drive chain 46. Rotate. At the same time, by the pinch rollers 36, 36 bearing on the feed side of the unit body 31, the longitudinal ends of the packaging film f are overlapped with each other and fed in the feed direction, and the seam rollers 40, 40 pivotally supported on the feed side. Thus, both longitudinal ends of the packaging film f are continuously heat-welded in the feeding direction.

The above-mentioned deaeration roller 8 is a rear stage side of the above-mentioned vertical welding unit 7, and the supporting plates 47, 47 are erected on both side edge portions of the feed conveyor 6 arranged at the lower part of the same. Then, the support shaft 48 is provided on the feed side facing surface of each of the support frames 47, 47.
Is mounted on a horizontal axis orthogonal to the feed direction, and the respective support frames 47, 4
A pressing roller 49 formed or covered with an elastic body 49a such as sponge or urethane is rotatably supported on a support shaft 48 that is hung between the seven rollers. That is, the packaging film f adsorbed and held on the feed conveyor 6 is pressed by the pressing pressure roller 49, and is rotated by the pressing roller 49 via the packaging film f by the conveying force of the same feed conveyor 6, so that The upper surface side of the packaging film f is pressed into a corresponding shape and deaerated. Alternatively, the pressing roller 49 may be rotationally driven in the feed direction in synchronization with the feed speed of the feed conveyor 6 by the driving force of a drive motor with a speed reducer (not shown).

The horizontal welding unit 9 described above is shown in FIGS.
As shown in FIG. 9, a horizontal seam position is set between the above-described feed conveyor 6 and the carry-out conveyor 11 described later,
The rotary shafts 50, 50 are horizontally mounted on the upper and lower parts of the same position so as to be orthogonal to the feed direction, and the end sealers face the upper and lower surfaces of the packaging film f on the peripheral surfaces of the rotary shafts 50, 50. 5
1, 51 are fixed in the axial direction, and gears 52, 52 fixed to one end side of the rotary shafts 50, 50 are meshed with each other. In addition, the notch portions 51a, 51a are formed opposite to each other on the heating side end portions of the respective end sealers 51, 51, and the heating side end portion of the end sealer 51 pivotally supported on the upper side is provided with a cutting blade 54 described later. A cutting blade having a receiving head 53 formed in a slightly elongated shape fixed in the longitudinal direction, and formed at an end on a heating side of an end sealer 51 axially supported downward to be slightly longer than the lateral width of the packaging film f described above. 54 is fixed in the longitudinal direction.

That is, each end sealer 51, 51 is synchronized with the feed speed of the feed conveyor 6 and the vertical welding unit 7 by the driving force of a drive motor (not shown) with a speed reducer.
Is rotated in the feeding direction, and each green onion N stored at equal intervals ...
The upper and lower surfaces of the packaging film f corresponding to the gaps are held by the end sealers 51, 51, and
The upper and lower surfaces of the packaging film f held by the respective end sealers 51, 51 are heat-welded in the width direction while leaving the portions of the 1, 51 facing the respective notched portions 51a, 51a. at the same time,
A large number of individual packaging bags F ...
It is separated in sequence.

The above-mentioned deaerating conveyor 10 is a post-stage side of the horizontal welding unit 9 described above, and a supporting plate 55 is erected on one side edge of the carrying-out conveyor 11 arranged at the lower part of the side.
A support shaft 56 is horizontally supported on a vertical surface of the support plate 55 on the feed side in a direction orthogonal to the feed direction. The front and rear ends of a movable frame 57 are pivotally supported about 56 so as to be vertically swingable, and, for example, sponge, urethane, etc. are provided between the drum rolls 58, 58 mounted on the front and rear ends of the movable frame 57. The pressing belt 59 formed or covered with the elastic body 59b is stretched. That is, the wrapping film f placed on the unloading conveyor 11 is pressed by the pressing belt 59, and the pressing belt 59 is driven and rotated via the wrapping film f by the conveying force of the unloading conveyor 11 in the feeding direction. N
The packaging film f immediately before the separation and the packaging bag F immediately after the separation are pressed into a shape corresponding to and deaerated. Alternatively, the pressing belt 59 may be rotationally driven in the feeding direction in synchronization with the feeding speed of the unloading conveyor 11 by the driving force of a drive motor with a speed reducer (not shown).

In the carry-out conveyor 11 described above, a feed belt 11c is stretched between a drum roll 11a mounted on the start end of the machine body 2 on the carry-out side and a drum roll 11b mounted on the end of the carry-out side. Then, the feed belt 11c is rotationally driven in the feed direction by the driving force of a drive motor (not shown) with a reduction gear.

Assuming that the illustrated embodiment is configured as described above, the operation when the article packing machine 1 packs a large number of onions N ... First,
As shown in FIG. 1 and FIG. 2, a synthetic resin packaging film f is pulled out from the roll supply unit 4 arranged at the lower side of the carry-in side of the machine body 2 and stretched on a film shaping plate 5 installed at the upper side of the same side. The packaging film f is bent and guided in a triangular tubular shape in which the leeks N bundled together are surrounded, and the longitudinal side ends of the packaging film f are polymerized with each other to pivotally support the vertical welding unit 7. The pinch rollers 36, 36 and the seam rollers 40, 40 are clamped.

A large number of green onions N ... Which are bundled in one are sequentially placed on the carry-in conveyor 3, and the carry-in conveyor is provided on the longitudinal center surface of the packaging film f bent into a triangular tubular shape. The green onions N, which are conveyed by 3, are sequentially transferred at a predetermined equal interval in the feeding direction. At the same time, the suction action of the suction blower 29 causes the suction holes 27 of the feed belt 27.
a and the suction holes 28a of the suction box 28 for sucking outside air, and the packaging film f bent into a triangular tubular shape is adsorbed and held on the transport surface of the transport conveyor 6 and supplied in the transport direction. To do.

Next, as shown in FIGS. 5 and 6, the pinch rollers 36, 36 and the seam rollers 40, 40 axially supported by the vertical welding unit 7 are rotated in synchronization with the feed speed of the feed conveyor 6 to form a triangle. The longitudinal ends of the packaging film f bent into a tubular shape are overlapped with each other, and the longitudinal ends of the packaging film f are continuously heat-welded in the feeding direction by the respective seam rollers 40, 40.

Next, as shown in FIGS. 8 and 9, the upper surface side of the packaging film f adsorbed and held on the feeding conveyor 6 is continuously pressed by the degassing roller 8 to form the packaging film f. Depressurize by pressing in a shape corresponding to the stored leek N. At the same time, the packaging film f welded by the vertical welding unit 7 is sequentially transferred onto the unloading conveyor 11, and the upper surface side of the packaging film f transferred onto the unloading conveyor 11 is continuously transferred by the degassing conveyor 10. Then, it is depressurized by pressing it into a shape corresponding to the green onion N stored in the packaging film f.

At the same time, the upper and lower end sealers 51, 51 pivotally supported by the horizontal welding unit 9 are rotated in synchronization with the feed speed, and the upper and lower surfaces of the packaging film f corresponding to the spaces between the green onions N ... Is sandwiched by the end sealers 51, 51 in the width direction, and the sandwiched portion of the packaging film f is sandwiched by the end sealers 51, 51 except for the portions facing the notches 51a, 51a of the end sealers 51, 51. Are heated and welded in the width direction.

At the same time, the upper and lower end sealers 51, 51
The portion heat-welded by is cut in the width direction by the cutting blade 54 to separate into a packaging bag F in which one leek N is packaged as shown in FIG. 10, and the separated packaging bag F is degassed. The conveyor bag 10 is pressed to degas from the deaeration holes Fa ... Formed in the packaging bag F, and the packaging bag F is conveyed and supplied to the boxing step (not shown) by the carry-out conveyor 11. At the start of the packaging, the pull-out side end of the packaging film f is fed in the air, and the idling portion of the packaging film f is heat-welded by the end sealers 51, 51.

Similarly, a large number of bundles of each of the onions N ... Are sequentially transferred onto the packaging film f bent into a triangular tubular shape, and the longitudinal side ends of the packaging film f are connected to the seam rollers of the vertical welding unit 7. 40 and 40 polymerize with each other and heat weld. The packaging film f heat-sealed by the vertical welding unit 7 is pressed by the degassing roller 8 and the degassing conveyor 10 to be degassed, and each end sealer 5 of the lateral welding unit 9 is pressed.
The wrapping film f is welded and cut at a predetermined interval by 1, 51, and is separated into a large number of wrapping bags F ...

As described above, a large number of bundles of the green onions N ... Are successively housed in the packaging film f heat-sealed in a triangular tubular shape, and the packaging film f immediately before separation and the packaging bag F immediately after separation.
Since the excess air is degassed by pressing, the packaging bag F can be downsized according to the degassing amount of air, and the packaging bag F can be boxed without degassing the excess air as in the conventional example. The packing bag F that has been degassed as in the present invention is less bulky than packing, and the packing space for the packing bag F can be reduced. Moreover, since a small space is required for packing in a box, it is possible to reduce the transportation cost and improve the transportation efficiency by increasing the number of packaging bags per box.

FIG. 11 shows another embodiment of the degassing conveyor 10, and the pressing belt 5 constituting the degassing conveyor 10 is shown.
Numerous hairs 5 made of synthetic resin on the pressing side peripheral surface of 9
9a ... is planted and the length of each hair 59a ... Planted on the pressing belt 59 is set to a concave shape corresponding to the leek N housed in the packaging film f. It can be pressed into a shape corresponding to the green onion N stored in the bag F, and rather than pressing the packaging film f in a plane by the degassing roller 8 and the degassing conveyor 10 described above, the packaging film f and the packaging Since the air enclosed in the bag F can be surely deaerated and the excess air is deaerated and packed in a box, the packaging bags F ... Are made bulky and the packing space can be reduced. In addition, you may form the pressing side peripheral surface of the above-mentioned deaeration roller 8 in a shape corresponding to the leek N accommodated in the packaging film f.

In the correspondence between the structure of the present invention and the above-described embodiment, the article of the present invention corresponds to the green onion N of the embodiment, and hereinafter the bag body corresponds to the packaging bag F and the film pressing. The means and the rotary body correspond to the degassing roller 8 and the degassing conveyor 10, and the elastic bodies include the elastic body 49a of the degassing roller 8 and the hair bodies 59a and 59b of the degassing conveyor 10. However, the present invention is not limited to the configuration of the above-described embodiment.

In the above-mentioned embodiment, the article wrapping machine 1 is used for the work of packing the leeks N bundled into one,
For example, it can be applied to the work of packing articles such as burdock root, radish, carrot, Chinese cabbage, spinach, chrysanthemum, high vegetable, and mustard spinach.

[Brief description of drawings]

FIG. 1 is a front view showing a packaging operation by an article packaging machine.

FIG. 2 is a plan view showing a packaging operation by the article packaging machine.

FIG. 3 is a plan view showing a film supply operation by the article packaging machine.

FIG. 4 is a vertical sectional front view showing a mounting structure of a film shaping plate.

FIG. 5 is a vertical sectional front view showing a film feeding operation by a pinch roller.

FIG. 6 is a vertical sectional front view showing a film welding operation by a seam roller.

FIG. 7 is a vertical cross-sectional front view showing a structure in which the end sealer is installed oppositely.

FIG. 8 is a side view showing a pressing operation by a degassing roller and a degassing conveyor.

FIG. 9 is a vertical sectional front view showing a pressing operation by a degassing conveyor.

FIG. 10 is a plan view showing a separately formed packaging bag.

FIG. 11 is a vertical sectional view showing another embodiment of the degassing conveyor.

[Explanation of symbols]

 f ... Wrapping film F ... Wrapping bag Fa ... Degassing hole N ... Leek 1 ... Goods packaging machine 2 ... Machine body 3 ... Carry-in conveyor 4 ... Film supply section 5 ... Film shaping plate 6 ... Feeding conveyor 7 ... Vertical welding unit 8 Degassing roller 9 Horizontal welding unit 10 Degassing conveyor 11 Delivering conveyor 36 ... Pinch roller 40 ... Seam roller 49 ... Pressing roller 49a ... Elastic body 51 ... End sealer 54 ... Cutting blade 59 ... Pressing belt 59a ... Hair body 59b ... Elastic body

Claims (4)

[Claims] 1. A large number of articles are sequentially placed on a longitudinal center surface of a packaging film supplied on a conveying path, and both longitudinal end portions of the packaging film are polymerized with each other and welded in a feeding direction. An article wrapping machine for welding the upper and lower surfaces of the corresponding packaging film between the respective articles in the width direction and cutting the same to separate and form one bag body, which is opposed to the packaging film formed in the bag shape. An article packaging machine having a film pressing means for pressing the upper surface side of the packaging film at a position. 2. The article packaging machine according to claim 1, wherein a degassing hole for degassing air in the bag body is formed in the separately formed bag body. 3. The article packaging machine according to claim 1, wherein the film pressing means is constituted by a rotating body which presses the upper surface side of the bag-shaped packaging film while rotating in the feeding direction. 4. The article wrapping machine according to claim 3, wherein an elastic body which deforms corresponding to the articles housed in the packaging film is provided around the pressing side peripheral surface of the rotating body.