JP2009029482A - Bag making apparatus for gusseted bag, and article packaging method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a bag making apparatus capable of manufacturing an empty gusseted bag. <P>SOLUTION: The bag making apparatus includes a packaging sheet holding portion 4 for holding a packaging sheet 200 at a predetermined position; a pressing body 5 having substantially parallel side faces 50, which is inserted into a central portion of the packaging sheet 200 in the length direction from a direction perpendicular to a face of the packaging sheet 200 held by the packaging sheet holding portion 4; guide members 61 and 62 arranged on the downstream side of the insertion of the packaging sheet holding portion 4 so as to oppose to each other across an insertion of the pressing body 5 located therebetween, for folding the packaging sheet 200 in substantially a U-shape cooperating with the pressing body 5; a packaging sheet tab folding portion 6 for folding tab portions at both ends of the packaging sheet 200 in the longitudinal direction together on a side face 50 of the inserting body 5 when inserting the inserting body 5; and a fusing device 8 arranged at an inserting end of the inserting body 5, for melting and bonding the overlapped portion of the tab portions of the packaging sheet 200 with the packaging sheet 200 placed over the inserting body 5 in a bag-shaped structure. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a bag making apparatus for manufacturing a bag with a bag for storing food such as rice balls and other articles, and an article packaging method for forming a bag and wrapping the article while wrapping the article in a packaging sheet.

As shown in FIG. 10, there is a packaging form of “rice ball” sold at a convenience store in which a rice ball (400) is accommodated in a substantially square-shaped packaging bag (300) with a hook.
The applicant has previously proposed a packaging device (Patent Document 1) that can be packaged in the packaging form shown in FIG. The packaging device is a fully automatic process of forming rice balls from cooked rice, forming a packaging bag while wrapping the formed rice balls in a packaging sheet, and welding and closing the mouth (301) of the packaging bag. Can be done.
The fully automatic packaging apparatus is suitable for mass production of packaging rice balls in a food factory or the like. However, the production capacity is too high for small production, and the apparatus is too large to be suitable.

  In response to a request to sell and sell special handmade rice balls in a bag, the application is to produce the rice balls themselves by hand gripping, embossing, etc., and sealing the mouth of the packaging bag, It is suitable for small-volume production and is easy to use by automatically performing only the process of wrapping rice balls with a packaging sheet while forming a packaging bag and discharging it, assuming that it will be performed by a separate device if necessary. An inexpensive rice ball packaging device was also proposed (Patent Document 2).

  As shown in FIG. 11, the common configuration of the packaging devices of Patent Documents 1 and 2 includes a push-up member (33) on which a rice ball (400) is placed and pushed straight up, and a packaging sheet (200) at the rear part of the packaging sheet. And a packaging sheet supply device (4 not shown) for supplying the rice ball (400) so as to be positioned directly above the push-up member (33), and the rice ball (400) is disposed at the height position of the push-up end of the rice ball (400). Deployed between the projecting body (5) projecting horizontally, the guide members (61) and (62) disposed opposite to each other across the projecting transition path of the rice ball (400), and between the guide members (61) and (62) And a welding device (8) which is arranged at the protruding end of the wrapping sheet ear portion (6) and the protruding body (5) and heat-bonds the overlapping portion of the wrapping sheet ear portion to form a bag bag (302). It is the point which has.

The operation of the packaging apparatus will be described. The rice ball (400) is placed on the push-up member (33), and the packaging sheet (200) is supplied horizontally above the push-up member (33).
As shown in FIG. 12, the rice ball (400) is pushed straight up so that the rear portion of the packaging sheet (200) is placed on the upper surface of the rice ball (400), and the front portion of the packaging sheet (200) is placed on the lower guide member (61). Fold it down against the edge (61a). The packaging sheet (200) has an inverted L shape.
The protruding body (5) waiting at the protruding end of the rice ball (400) is advanced horizontally, and the rice ball (400) is inserted into the accommodating portion (51) formed in the protruding body (5) as shown in FIG. And push downstream. At this time, as shown in FIG. 14, the front portion of the packaging sheet (200) hits the edge (61a) of the lower guide member (61) and is folded back. The packaging sheet (200) has a substantially U-shape sandwiching the rice ball (400).
Further, during the rushing, both edges of the wrapping sheet (200) along the piercing direction of the wrapping sheet (200) are disposed on both sides of the transition path of the piercing body (5). Folded on the left and right sides (50). At the end of intrusion of the projecting body (5), the overlapping part of the ears of the packaging sheet is welded by the welding device (8) to complete the package bag containing rice balls.

Japanese Patent Laid-Open No. 2005-6539 Utility Model Registration No. 31131644

In Patent Document 1 and Patent Document 2, a bag with a hook cannot be formed unless the rice ball (400) is placed on the push-up member (33). This is because the thickness of the rice ball (400) determines the substantially U-shaped opening width, that is, the bag bag width, when the packaging sheet (200) is folded from an inverted L shape to a substantially U shape.
Therefore, with the devices of Patent Document 1 and Patent Document 2, it is not possible to produce only a blank bag with a basket that does not contain a rice ball. There are many requests for empty bags with a basket.
In the case of Patent Document 2, the rice ball (400) is supplied manually, but the packaging sheet (200) is automatically supplied by the packaging sheet supply device in the same manner as in Patent Document 1. Done.
The packaging sheet supply device is well known in the seaweed industry and the cooked rice industry, and a suction basket is arranged to be movable up and down below the stocker containing the stack of laminated packaging sheets. At the same time as pushing up the bundle of packaging sheets, the lowermost packaging sheet is sucked, and when the suction trough is lowered, only the lowermost packaging sheet is drawn downward from the stocker and the conveyor belt (FIG. 11, FIG. 12 (see reference numeral (15) of 12), and by intermittent running of the conveyor belt (15), the packaging sheets (200) are supplied one by one above the push-up member (33).

In the packaging sheet supply device, the up-and-down moving sound of the suction basket, the up-and-down movement sound of the laminated packaging sheet bundle in the stocker, and the operating sound of the suction blower are noises. Further, it is difficult to downsize a packaging sheet supply device that supplies a packaging sheet of a predetermined size, and the ratio of the packaging sheet supply device including the blower is high in the cost of the packaging sheet supply device.
The above points are a major obstacle to installing in general stores.

From the viewpoint of being easy to use and inexpensive without requiring high production capacity, if the rice ball (400) is supplied manually, the packaging sheet may be supplied manually.
However, it is difficult to correctly position and supply the packaging sheets whose shapes are unstable in the narrow space between the horizontal transition path of the projecting body (5) and the push-up member (33) one by one.
Further, there is a risk that a hand may be pinched by the rising of the push-up member (33).
The present invention clarifies a bag making apparatus that can solve the above problems, and an article packaging method that forms a bag while wrapping an article in a packaging sheet and wraps the article.

The bag making apparatus for a bag with a bag according to the present invention comprises a packaging sheet holding part (4) for holding the packaging sheet (200) in a fixed position,
Both side surfaces (50), (50) that are substantially parallel to each other and project into the central portion of the length of the packaging sheet from a direction perpendicular to the surface of the packaging sheet (200) held by the packaging sheet holding portion (4) A projecting body (5),
A guide that is disposed opposite to the projecting downstream side of the packaging sheet holding portion (4) across the projecting transition path of the projecting body (5) and folds the packaging sheet (200) in a substantially U shape in cooperation with the projecting body (5). Members (61) and (62);
A wrapping sheet ear fold (6) that folds both ends of the wrapping sheet (200) along the longitudinal direction on the side surface (50) of the plunging body (5) during the projecting transition of the projecting body (5); ,
A welding device (8) which is arranged at the projecting end of the projecting body (5) and welds the overlapping portion of the ears of the packaging sheet (200) in a state where the packaging body (5) is covered in a bag shape. ).

The article wrapping method of the present invention includes a packaging sheet supply step of supplying the packaging sheet holding unit (4) in a state where the substantially rectangular packaging sheet (200) is raised,
A projecting body having a substantially parallel both side surfaces (50), (50) at the central portion in the vertical direction and the horizontal direction of the supplied packaging sheet (200), and a storage portion (51) for storing articles between the side surfaces. (5) is pushed together with the article, and the folding body (5) and the packaging sheet (200) are folded in a substantially U shape across the article;
By the packaging sheet ear folded portions (6) arranged on the left and right sides of the projecting transition path, both end ears along the projecting transition path of the packaging sheet protruding from the article (400) are connected to the side surface of the projecting body (5) ( 50) a packaging sheet ear folding process for folding up;
At the projecting end of the projecting body (5), in the state where the article is accommodated in the accommodating part (51) of the projecting body (5), the folded portion of the packaging sheet ear is welded by the welding device (8). A welding step to form a bag (300) having a mouth (301) at one end;
And a sealing step of closing the mouth portion (301) of the bag (300) by welding or the like.

When the article is not supplied between the packaging sheet holding part (4) and the projecting body (5) at the standby position, the bag making apparatus according to the present invention has the packaging sheet (4) held by the packaging sheet holding part (4). 200), the projecting body (5) is pushed in empty, and the packaging sheet (200) is folded in a substantially U-shape with the article in cooperation with the guide members (61) and (62). In other words, the bag width is determined by the thickness of the projecting body (5).
The subsequent welding process of the bag (302) can be performed in the same manner as before, and an empty bag-like packaging bag can be formed.
If the packaging sheet is manually supplied to the packaging sheet holding section (4), noise caused by the conventional packaging sheet supply device is eliminated, and the cost of the packaging sheet supply device can be manufactured at a low cost.
Since the push-up member (33) is also unnecessary, the manufacturing cost is reduced correspondingly, and there is no danger of pinching the hand with the push-up member (33).

If the packaging method of the present invention is an article that can be accommodated in the accommodating portion (51) of the projecting body (5), the type, size, and shape of the article can be selected and the bag can be packaged.
The bag mouth (301) can be folded and closed easily, and if necessary to be sealed by heat welding or the like, a sealing device (93) can optionally be provided.

Goods to be packaged (Figure 9a)
In the example, the article to be packaged is a triangular rice ball (400).

Packaging sheet (200) (Fig. 9a)
The packaging sheet (200) is a well-known packaging sheet for rice ball packaging in which a sheet-like seaweed is sandwiched between an outer film and an inner film and the outer film and the inner film are welded to form a rectangular shape.
The length of the packaging sheet (200) is slightly more than three times the triangular height of the rice ball (400), and the width is about twice that of the rice ball (400).
Packaging bag (300) (Fig. 9f)
The packaging bag (300) containing the rice ball (400) is formed by wrapping the rice ball (400) with the packaging sheet (200) by a bag making apparatus described later.

Onigiri packaging procedure (Figures 9a to 9f)
As shown in FIG. 9a, a rice ball (400) in a landscape orientation is placed at the center of the packaging sheet (200) that is held up in a vertical orientation with the triangle base parallel to the surface of the packaging sheet (200). , Thrust horizontally with the projecting body (5). On the downstream side of the packaging sheet (200), guide members (61) and (62) are positioned up and down with a gap allowing the projecting body (5) to be thrust in. As shown in FIG. (200) is folded into a generally U shape with rice ball (400) in between.
The margin that protrudes from the rice balls (400) on both side edges along the longitudinal direction of the packaging sheet (200) is referred to as the ears (200a) (200b).
As shown in FIG. 9c, the center part (200e) of both ears of the packaging sheet (200) folded in a substantially U shape is folded inward.
As shown in FIG. 9d, the upper ear portion (200a) of the packaging sheet (200) is folded downward, and the lower ear portion (200b) is folded upward as shown in FIG. (200a) and (200b) are folded and welded (304) to form a bag (302), thereby completing the bag-equipped packaging bag (300) having the mouth portion (301).
As shown in FIG. 9f, the bag opening (301) is welded to form the sealing portion (303).

Bag making device (Figure 1)
The bag making apparatus comprises a packaging sheet holding portion (4) for holding the packaging sheet (200) in a vertical orientation on a base (1) and holding it in place.
For the packaging sheet (200) having both side surfaces (50), (50) that are substantially parallel to each other and held in the vertical direction, a protrusion projecting from the direction perpendicular to the sheet surface into the central portion of the length of the packaging sheet Body (5),
A guide that is disposed opposite to the projecting downstream side of the packaging sheet holding portion (4) across the projecting transition path of the projecting body (5) and folds the packaging sheet (200) in a substantially U shape in cooperation with the projecting body (5). Members (61) and (62);
A wrapping sheet ear fold (6) that folds both ends of the wrapping sheet (200) along the longitudinal direction on the side surface (50) of the plunging body (5) during the projecting transition of the projecting body (5); ,
A welding device (8) which is arranged at the projecting end of the projecting body (5) and welds the overlapping portion of the ears of the packaging sheet (200) in a state where the packaging body (5) is covered in a bag shape. ), And a discharge means (2) for containing a rice ball (400) and having a mouth portion (301) at one end for transporting in a discharge direction (2), and a mouth disposed in the discharge transition path of the packaging bag (300) And a sealing device (93) for welding and sealing the portion (301).
In the following description, the protrusion (5) side is the upstream side, and the welding device (8) side is the downstream side.

Guide member (61) (62) (FIGS. 1 to 4)
A rectangular base plate (12) is horizontally fixed on the base (1) with a space between the base upper surface (11) and the base plate (12) has a base at a substantially central portion. A through-groove hole (40) is opened perpendicular to the length direction of the plate (12).
The length of the through groove (40) is slightly longer than the width of the packaging sheet (200).
The downstream side of the through-groove hole (40) of the base plate (12) is the lower guide member (61), and there is a space slightly above the thickness of the rice ball (400) above the lower guide member (61). The plate-like upper guide member (62) is fixed horizontally.
Above the upper guide member (62), a substantially U-shaped mounting plate (13) opened upstream is fixed horizontally.

Packaging sheet holder (4) (Figs. 1 to 4)
A packaging sheet holding part (4) is provided across the base (1) and the mounting plate (13).
The packaging sheet holding part (4) of the embodiment faces the through-groove hole (40) of the base plate (12) and the U-shaped inner edge of the mounting plate (13) at a position directly above the through-groove hole. The upper surface (11) of the base (1) through the slit holes (14), (14), the through-groove holes (40), the slit holes (14), (14), and the through-groove holes (40). And an auxiliary member (45) for holding the packaging sheet (200) having its lower end landed in an upright state.
Auxiliary members (45) are provided on the upstream and downstream sides of both slit holes (14) and (14) of the mounting plate (13) so as to approach the slit holes (14) and (14) one by one or plurally. The downward shaft body (41) (41), (42) (42) and the upper surface (11) of the base (1) are passed through the through groove hole (40) of the base plate (12), and the mounting plate (13) A plurality of upward shafts (43) and (43) projecting from the upper downward shafts (41) and (41) on the upstream side.
There is room for the packaging sheet (200) to pass between the hole edge on the downstream side of the through groove hole (40) and the upward shaft body (43).
The downstream side of the upward shaft bodies (43) and (43) is opened at intervals of the guide members (61) and (62).
A base (44) (44) for guiding the packaging sheet (200) to the slit hole (14) (14) is attached to the mounting plate (13).
The height of the center of the length of the packaging sheet (200) held by the packaging sheet holding portion (4) is equal to the center height between the guide members (61) and (62).

Projecting body (5) (Figs. 2 and 3)
The projecting body (5) is accommodated in a rectangular block (53) corresponding to the thickness of the rice ball (400) and opened to the downstream end of the block (53) corresponding to the shape of the rice ball (400). Part (51) is formed.
The left and right side surfaces (50), (50) of the projecting body (5) are substantially parallel, and a laterally T-shaped heat-resistant cushion sheet (52) is attached to the both side surfaces.
The projecting body (5) is connected to a reciprocating drive device (not shown) such as a cylinder device, and projects from the standby position at the upstream end of the base plate (12) to the width center of the holding packaging sheet.
If the reciprocating drive device for the projecting body (5) is mounted on the mounting plate (13), the length of the bag making device can be shortened.
As shown in FIG. 2, the base plate (12) has a space for placing a rice ball (400) between the through groove (40) and the projecting body (5) waiting at the upstream end. A supply station S1 is provided.
A packaging sheet ear welding station S2 is provided outside the downstream end of the base plate (13).
The left and right side surfaces (50), (50) of the projecting body (5) are substantially parallel when the projecting body (5) is removed from the completed packaging bag (300) in the bag manufacturing process described later. This is because it is conceivable to make a slight draft so that the lateral width of the projecting body (5) gradually narrows.

Sheet ear fold (6) (Figs. 2 and 5)
The sheet ear folds (6) are disposed between the guide members (61) and (62) on both sides of the projecting transition path of the projecting body (5), respectively. 3, three ruler plates (63) (64) (65), (63) (64) (65), and the projecting body (5).
Of the three ruler plates (63), (64) and (65), the upstream first ruler plate (63) extends outward from the lower edge of the ruler plate (63) as shown in FIG. It is fixed to the lower guide member (61) by the mounting piece (63b).
As shown in FIG. 5a, between the upper edge of the first ruler plate (63) and the upper guide member (62) and between the lower edge of the first ruler plate (63) and the lower guide member (61). Are formed with gaps x1 and x1 through which the upper and lower ears (200a) and (200b) of the packaging sheet (200) covered with the rice balls (400) can pass.
As shown in FIG. 5f, the upstream end of the first ruler plate (63) is bent slightly outward, and as shown in FIG. 5b, the upper and lower ends of the bent portion are the ears (200a) (200b) of the packaging sheet (200). ) Are formed in the inclined guide edges (63a) and (63a).

As shown in FIG. 2, the next second ruler plate (64) is fixed to the upper guide member (62) by a mounting piece plate (64b) extending outward from the upper edge of the plate.
As shown in FIG. 5a, a gap x2 is formed between the lower edge of the second ruler plate (64) and the lower guide member (61) through which the lower ear portion (200b) of the packaging sheet (200) can pass.
The upstream portion of the second ruler plate (64) overlaps the outside of the first ruler plate (63), and the upper ear portion (200a) of the packaging sheet (200) is bent downward at the overlap portion. A gap x4 that can pass through is formed.
As shown in FIG. 5a, the upstream end of the second ruler plate (64) is formed with an inclined edge (64a) inclined so that the upstream side gradually approaches the upper guide member (62).

As shown in FIG. 2, the third ruler plate (65) is fixed to the lower guide member (61) by mounting plates (13) and (65b) extending outward from the lower edge of the plate.
The upstream part of the third ruler plate (65) overlaps the outside of the second ruler plate (64), and the overlapping part is on the lower ear (200a) of the packaging sheet (200) as shown in FIG. 5f. Is formed on the side surface of the projecting body (5) so that it can pass in a bent state.
As shown in FIG. 5e, the upstream edge of the third ruler plate (65) is formed with an inclined edge (65a) that is inclined so that the upstream side gradually approaches the lower guide member (61).

As shown in FIG. 5f, on the upstream side of the upstream first ruler plate (63), shaft-shaped baffle members (60), (60) are fixed to the upper guide member (62) or the lower guide member (61). . The baffle member (60) is at an intermediate position between the lower guide member (61) and the upper guide member (62), and the inner ends of the baffle members (60) are close to the transition path of the rice ball (400).
Each ruler plate (63) (64) (65) and baffle member (60), the ruler plate (63) (64) (65) and baffle member (on the opposite side across the entry transition path of the rice ball (400)) It is possible to move toward and away from 60) and position, and a protruding transition path corresponding to the size of the projecting body (5) can be formed.
As will be described later, the rice balls (400) sandwiched between the packaging sheets (200) bent in a substantially U shape are the left and right baffle members (60) (60), ruler plates (63) (64) (65), ( While passing between 63, 64 and 65, the ears (200a) and (200b) of the packaging sheet (200) are folded to form the bag (302) of the packaging bag (300).

Welding device (8) (Figs. 2 and 6)
A welding device (8) is provided at the welding station S2 approaching the downstream end of the base plate (12).
The welding device (8) receives the packaging sheet (200) in a state of covering the projecting body (5) in a bag shape on the receiving frame (7) arranged in accordance with the height of the lower guide member (61). The wrapping portions of the packaging sheet ears (200a) and (200b) are heat-welded.

The receiving frame (7) is also a component part of the discharge means (9) described later, and is mounted on the slide base (71). The slide table (71) slides back and forth while being guided by the rail (91). The rail (91) extends laterally from the welding station S2 in a direction perpendicular to the projecting direction of the projecting body (5), and the end of the rail (21) is a bag discharge station S3.
The receiving frame (7) is formed in a quadrangle that opens on the upper surface and the surface on the lower guide member (61) side and allows the projecting body (5) to project.
The side plates (72) and (72) of the receiving frame (7) have T-shaped grooves corresponding to the lateral T-shaped cushion seals (52) on the side surfaces (50) and (50) of the projecting body (5). Holes (73) and (73) are opened.
The back plate (74) of the receiving frame (7) has a cutout (75) for discharging packaging rice balls.
The upper opening of the receiving frame (7) is used to hold the packaging bag (300) in the receiving frame (7) when the projecting body (5) is removed from the completed packaging bag (300). Presser pieces (76) and (76) made of leaf springs are provided.
The both side plates (72) and (72) of the receiving frame (7) stopped at the welding station S2 are on the extension of the third ruler plates (65) and (65) of the wrapping portion (6) of the packaging sheet. , Close to the third ruler plate (65) (65).

In the welding device (8), two slide plates (82) and (82) are arranged on the lifting platform (81) so as to be close to each other with the receiving frame (7) interposed therebetween, and both slide plates (82) ( 82) and a pressing body (87) (87) attached to the lower end.
In the pressing bodies (87) and (87), heaters swelled in a T shape corresponding to the slot (73) of the receiving frame (7) and the cushion sheet (52) on the side surface of the projecting body (5). A surface (88) is formed.
The two slide plates (82) and (82) are shifted from each other so as to project a shaft (83) toward the mating slide plate (82), and the shaft (83) is a bifurcated tip of the lifting platform (81). And the other slide plate (82).
Rack surfaces (84) and (84) are formed opposite to each other at the center of both shafts (83) and (83), and a common pinion gear (85) is engaged with both rack surfaces (84) and (84). . The pinion gear (85) is connected to a rotary drive device (not shown) such as a cylinder mounted on the lifting platform (81).
The rotation of the pinion gear (85) causes the shafts (83) and (83) to slide in opposite directions to bring the slide plates (82) and (82) closer to or away from each other.
The lifting platform (81) is connected to a lifting drive device (76) such as a cylinder and moves up and down.

Rice ball discharge means (2) (Fig. 2, Fig. 7)
The rice ball discharge means (2) is constituted by a slide driving device (not shown) such as a cylinder connected to the receiving frame (7), slide base (72), rail (91) and slide base (72).

Sealing device (9) (Figs. 2 and 8)
Between the welding station S2 and the discharge station S3, a sealing device (93) for sealing the mouth portion (301) of the packaging bag (300) by thermal welding is provided.
The sealing device (93) is configured by disposing a heating roller (94) and a receiving roller (95) facing each other across the transition path of the mouth portion (301) of the packaging bag (300).
Both rollers are driven to rotate in accordance with the discharge movement speed of the packaging bag (300).

Next, the bag making process will be described.
Supply of rice balls (400) and packaging sheets (200) (Figs. 1 and 3)
The rice ball (400) is supplied to the rice ball supply station S1 on the base plate (12), and the packaging sheet (200) is supplied to the packaging sheet holding part (4) from above. Both are supplied manually.
When a start switch (not shown) is pressed, the following operations are automatically performed.

Intrusion into rice ball (400) and packaging sheet (200) by projecting body (5) (FIGS. 5a and 5b)
The projecting body (5) moves forward, and the central portion of the packaging sheet (200) is thrust with the rice ball (400) fitted into the accommodation portion (51).
As shown in FIG. 5b, the package sheet (200) that has been pushed in is approximately between the rice balls (400) and the projecting body (5) by the upstream edges (61a) and (62a) of the guide members (61) and (62). It is folded into a U shape and pushed into the guide members (61) and (62).

The operation of folding the packaging sheet ears (steps in FIGS. 5b to 5e)
Further, when the projecting body (5) advances downstream, the central bent part (200e) of both ears along the longitudinal direction of the packaging sheet (200) hits the pin-shaped baffle member (60), so that the inner part, ie, the projecting part. It is folded so as to cover the side surface side (50) of the body (5) (FIGS. 5b and 9c).
When the rice ball (400) further advances, as shown in FIG. 5d, the upper and lower ears (200a) (200b) of the packaging sheet (200) enter the upper and lower gaps x1, x1 of the first ruler plate (63).
Next, the upper ear portion (200a) of the packaging sheet (200) on the way forward is brought into contact with the inclined edge (64a) of the second ruler plate (64) and folded downward. The folded ear portion (200a) passes through the gap x4 between the first ruler plate (63) and the second ruler plate (64).
Next, the lower ear (200b) of the packaging sheet (200) passes through the gap x2 between the second ruler plate (64) and the lower guide member (61), and the third ruler plate (65) is inclined. When it hits the edge (65a), it is folded upward so as to cover the second ruler plate (64).
The folded ear part (200b) passes through the gap x5 between the second ruler plate (64) and the third ruler plate (65).
When the rice ball (400) passes through the second ruler plate (64), the ears (200a) (200b) overlap on the side surface (50) of the projecting body (5), and the packaging sheet (200) becomes the film. It has a bag shape with the overlapping part of the ears (200a) and (200b) as a ridge (302).
The rice ball (400) is accommodated in the accommodating portion (51) of the projecting body (5), and the packaging sheet (200) is covered in a bag shape on the rice ball (400) and the projecting body (5) at the welding station S2. It is delivered to the stand-by receiving frame (7).

Welding operation of both ears of the bag (the process shown in FIG. 9e)
The welding device (8) shown in FIG. 6 is lowered, and the left and right pressing bodies (87) and (87) are positioned outside the both side plates (72) and (72) of the receiving frame (7).
The pinion gear (85) rotates and the pressing bodies (87) and (87) approach each other, and the T-shaped heater surface (88) on the pressing body (87) is attached to the side plate (72) of the receiving frame (7). ) And the overlapping portion of the packaging sheet ears (200a) (200b) is heated and welded (304).
A T-shaped cushion sheet (52) is attached to the side surface of the projecting body (5) on which the packaging sheet ears (200a) and (200b) overlap, corresponding to the heater surface (88). The overlapping portion of the packaging sheet ears (200a) and (200b) can be pressed and strongly welded (304) so that the surface (88) bites into the cushion sheet (52).
The packaging sheet (200) is formed into a bag (300) with both ears welded, with the welding ears serving as ridges (302) and the inner ends opened.

The pinion gear (85) of the welding device (8) rotates in the opposite direction to the above, the pressing bodies (87) and (87) are separated from the receiving frame (7), and the welding device (8) ) Is lifted to a position higher than the receiving frame (7).
The projecting body (5) comes out of the opening (301) of the bag (300) and returns to the upstream standby position.
The rice ball (400) remains in the packaging bag (300).

All grip as sealing said discharge and bag mouth portion (301), receiving frame (7) leaving the welding device (8) is increased, with the plunging element (5) comes out from the bag and retract, The receiving frame (7) slides along the rail (91) toward the discharge station S3.
During discharge, the mouth (301) of the packaging bag (300) is sandwiched between the heating roller (94) and the receiving roller (95) of the sealing device (93), and the mouth (301) It is welded and sealed.
At the discharge station S3, the packaged rice balls can be removed manually.

  The above description of the embodiments is for explaining the present invention, and should not be construed as limiting the invention described in the claims or reducing the scope thereof. The configuration of each part of the present invention is not limited to the above-described embodiment, and various modifications can be made within the technical scope described in the claims.

  For example, in the present invention, the bag mouth (301) can be left unsealed. It is also possible to fold the bag mouth portion (301) and simply seal with a cellophane tape or the like.

The shape of the rice ball (400) accommodated in the packaging bag (300) is not limited to the triangular rice ball, and the shape is not limited to other shapes such as stick-shaped rice, a flat circle, a flat square, or the like. What is necessary is just to determine the shape of the accommodating part (51) of a protrusion body (5) according to the shape of a rice ball.
Further, not only rice balls but also other foods or non-food items can be packaged as long as they can be accommodated in the accommodating portion (51) of the projecting body (5).

  Further, when the bag making apparatus is operated without supplying the rice ball (400) to the onigiri supply station S1 without the sealing device (93), an empty bag-like packaging bag can be manufactured.

  In carrying out the present invention, the packaging sheet (200) is held in a state in which the longitudinal direction is in the horizontal direction and is raised in the horizontal direction (substantially vertical state), and the protruding body (5) is inserted to manufacture the packaging bag. You can also.

  The packaging sheet (200) is not limited to portrait orientation and landscape orientation, and can be implemented as a single sheet as long as it can be held in a raised state.

  In carrying out the present invention, the supply of goods such as rice balls (400) and the supply of the packaging sheet (200) are not necessarily limited to manual operation, and an appropriate automatic supply device can be used. Of course.

It is a perspective view of the bag making apparatus seen from the upstream side. It is a perspective view of the bag making apparatus seen from the downstream side. It is a perspective view of the packaging sheet holding | maintenance part of a bag making apparatus. It is a side view of a packaging sheet holding part. It is explanatory drawing of the process of folding the ear | edge part of a packaging sheet with three ruler plates. It is a perspective view of a welding apparatus. It is a top view of a packaging rice ball discharge | emission means. It is a perspective view of a sealing device. It is explanatory drawing of the procedure which folds a packaging sheet into a bag. It is a perspective view of a packaging rice ball. It is explanatory drawing of the state which mounted the rice ball on the pushing-up member of the packaging apparatus of a prior art example. It is explanatory drawing which pushes up a thrust member same as the above and folds a packaging sheet in reverse L shape. It is explanatory drawing of the state which the protrusion body same as the above advanced and the rice ball was accommodated in the protrusion body. It is explanatory drawing which a protrusion body protrudes between guide members.

Explanation of symbols

1 base 4 packaging sheet holding part 5 protrusion
51 Container 6 Packing sheet ear fold
61 Lower guide member
62 Upper guide member
63 First ruler plate
64 Second ruler plate
65 Third ruler plate 8 Welding device 9 Discharge means

Claims (6)

A packaging sheet holder (4) for holding the packaging sheet (200) in place;
Both side surfaces (50), (50) that are substantially parallel to each other and project into the central portion of the length of the packaging sheet from a direction perpendicular to the surface of the packaging sheet (200) held by the packaging sheet holding portion (4) A projecting body (5),
A guide that is disposed opposite to the projecting downstream side of the packaging sheet holding portion (4) across the projecting transition path of the projecting body (5) and folds the packaging sheet (200) in a substantially U shape in cooperation with the projecting body (5). Members (61) and (62);
A wrapping sheet ear fold (6) that folds both ends of the wrapping sheet (200) along the longitudinal direction on the side surface (50) of the plunging body (5) during the projecting transition of the projecting body (5); ,
A welding device (8) which is arranged at the projecting end of the projecting body (5) and welds the overlapping portion of the ears of the packaging sheet (200) in a state where the packaging body (5) is covered in a bag shape. ).   The packaging sheet holding part (4) can hold the packaging sheet (200) vertically, and the downstream side of the packaging sheet holding part (4) protrudes in a state where the packaging sheet (200) is bent in a substantially U-shape. The guide members (61) and (62) are arranged opposite to each other on the downstream side of the packaging sheet holding part (4) across the projecting transition path of the projecting body (5). The bag making apparatus for a bag with a bag according to claim 1.   The space for placing an article accommodated in the packaging bag (300) to be manufactured exists between the projecting body (5) in the standby position and the packaging sheet holding part (4). Bag making device for bags with bags.   The welding device (8) waits at the projecting end of the projecting body (5), is folded into a bag shape, and receives the packaging sheet (200) that remains covered by the projecting body (5), and a receiving frame (7), The overlapping portion of the ear portion of the packaging sheet (200) in the receiving frame is composed of a pressing body (87) that heats and presses the side surface (50) of the protruding body (5), and the receiving frame (7) is the protruding body (5). Between the stand-by position at the end of the indentation and the discharge position of the packaging bag (300) in which the overlapping portion of the ear portion of the packaging sheet (200) is thermally welded in the receiving frame (7) The bag making apparatus for a bag with a bag according to any one of claims 1 to 3, wherein the bag is movable.   The sealing device (93) for sealing the mouth (301) of the packaging bag (300) is provided between the standby position of the receiving frame (7) and the bag discharge position. Bag making device for bags with bags. A packaging sheet supply step of supplying the packaging sheet holding section (4) in a state where the substantially rectangular packaging sheet (200) is raised;
A projecting body having a substantially parallel both side surfaces (50), (50) at the central portion in the vertical direction and the horizontal direction of the supplied packaging sheet (200), and a storage portion (51) for storing articles between the side surfaces. (5) is pushed together with the article, and the folding body (5) and the packaging sheet (200) are folded in a substantially U shape across the article;
By the packaging sheet ear folded portions (6) arranged on the left and right sides of the projecting transition path, both end ears along the projecting transition path of the packaging sheet protruding from the article (400) are connected to the side surface of the projecting body (5) ( 50) a packaging sheet ear folding process for folding up;
At the projecting end of the projecting body (5), in the state where the article is accommodated in the accommodating part (51) of the projecting body (5), the folded portion of the packaging sheet ear is welded by the welding device (8). A welding step to form a bag (300) having a mouth (301) at one end;
An article packaging method including a sealing step of closing a mouth (301) of a bag (300) by welding or the like.

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