JPH0343124B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to an apparatus for automatically packaging triangular rice balls one by one.

(Prior Art and Problems) The inventor of the present invention previously devised an apparatus for automatically packaging triangular rice balls in a rectangular sheet S according to the procedure shown in FIG. 11 (Japanese Patent Application No. 157093/1982).

The sheet S is made of non-breathable thermoplastic synthetic resin, and its width W ₁ is slightly longer than the length W ₂ of one side of the triangular rice ball 9, and the length L ₁ is equal to the triangular height L ₂ of the rice ball. It is slightly longer than twice the length plus the thickness.

The sheet S is formed into a bag shape by overlapping two films S ₀ S ₀ and thermally welding the outer periphery, and the sheet-shaped seaweed 90 is accommodated in the bag.

First, as shown in FIG. 11A, the sheet S is placed horizontally below the horizontal guide plate 1 in which the triangular hole 11, which is slightly larger than the outline of the triangular rice ball, is opened. Triangular rice balls 9 are arranged in accordance with the direction of the holes 11. At this time, an imaginary line dividing the sheet S into 1/2 at the center in the longitudinal direction
Line one side edge of triangular rice ball 9 parallel to S ₁ .

Next, the rice ball 9 is pushed up and passed through the triangular hole 11 of the guide plate 1 together with the sheet S, and at this time, the sheet S is held by the edge of the hole between the three sides 91 and 9 of the triangular rice ball.
Fold it downward along lines 2 and 92 (Figure 11B).
At this time, the top surface and three sides of the rice ball are wrapped at once by the folded pieces S ₂ , S ₃ , and S ₃ of the sheet.

The triangular rice ball is now moved horizontally in the direction shown by the arrow p, and the rectangular folded piece S ₂ hanging down from the bottom of the rice ball is hung on the edge of the triangular hole 11 and folded toward the bottom side of the triangular rice ball 9.

At this time, the tips of the two triangular folded pieces S ₃ and S ₃ are folded outward at the same time (FIG. 11C).

The edges of the sheet protrude from both ends of one side 91 of the triangular rice ball 9 by folding the square folded piece _S2 .
Fold S ₄ and S ₄ to the other two sides (Fig. 11D).

Fold both ends of the square folded piece _S2 upward along the two sides of the rice ball (Fig. 11E).

The two ends S ₅ , S ₅ of the sheet protruding above the top surface of the rice ball are overlapped on the rice ball, and the overlapping portion is heat welded S ₆ (FIG. 11F).

The triangular rice balls are packaged through the above steps.

In the process of FIG. 11E, both ends of the sheet S ₅ , S ₅
The overlapping of the arms 101 and 102 on the rice ball is carried out by intersecting a pair of arms 101 and 102 rotating in a horizontal plane on the rice ball as shown by arrows p ₁ p ₂ . The arm rotates at a predetermined height position approximately equal to the thickness of the rice ball from the upper surface of the guide plate 1.

However, the thickness of the rice balls varies;
If the thickness of the rice ball is too small, the arm 101,1
02 and the rice ball, making it impossible to package the rice ball beautifully. Also, if the rice ball is too thick, the arms 101 and 102 will collide with the rice ball, crushing the rice ball, making it impossible to package it, and the arm will be damaged. It turned out that there was a problem.

The present invention discloses a triangular rice ball packaging device that can beautifully package rice balls without losing their shape even if the thickness of the rice balls varies by devising a stand that supports the bottom surface of the rice balls. The present invention will be specifically explained based on Examples shown in the following.

(Means for Solving the Problem) The triangular rice ball packaging device of the present invention is supported horizontally, the upper surface serves as a transition path for the triangular rice ball 9, and the through triangular holes 11 and 1 are provided on the upstream and downstream sides of the transition path, respectively.
Information board 1 with the top of 2 facing upstream
a sheet conveying device 2 disposed below the guide plate 1 and conveying the packaging sheet S so that the upstream portion of the sheet is located below the upstream triangular hole 11 of the guide plate 1; A large number of triangular saucer portions 43 are provided below and have penetration portions 44 on the bottom surface.
a rice ball conveying device 4 that moves intermittently and stops the saucer portion 43 one after another directly below the triangular hole 11 on the upstream side of the guide plate 1; The uplifting plate 51 connected to the guide plate 1 is passed through the penetration part 44 of the receiving tray part 43.
a rice ball pushing-up device 5 that projects into and out of the upstream triangular hole 11; and a rice ball pushing device 6 that is disposed on the guide plate 1 and projects the rice ball that emerges from the upstream triangular hole 11 onto the downstream triangular hole 12. , a triangular plate 78 that is movable up and down below the triangular hole 12 on the downstream side of the guide plate 1, and supports the rice ball by appearing in and retracting from the triangular hole 12 with enough room; and a triangular hole on the downstream side of the guide plate 1. Folding plates 85, 8 are disposed above the triangular hole 12 so as to be movable up and down, and extend along two sides from the top facing the upstream side of the triangular hole 12 to the other top.
5 facing downward and presses down the top surface of the rice ball on the triangular plate 78; A folding device 7 has folding plates 74, 74 facing upward along both sides, and a pair of arms 101, 102 arranged near the downstream triangular hole 12 of the guide plate 1 are placed on the triangular plate 78 at slightly different heights. A folding device 100 that moves the sheet pieces horizontally in a direction slightly higher than the top surface of the rice ball so that they approach each other and folds the sheet pieces that protrude upward from the top surface of the rice ball so that they overlap each other, and the triangular plate 78 folds the triangular plates. The triangular plate 78 is disposed upwardly biased by a spring on the lifting frame 65 to be raised and lowered, and a clamp cylinder 78 for the lifting frame 65 is linked to the triangular plate 78 .

(Operations and Effects) When the presser plate 86 presses the rice ball on the triangular plate 78, if the thickness of the rice ball is thicker than the set thickness, the triangular plate 78 moves down against the spring, and the height of the top surface of the rice ball decreases to the folding device 100. A pair of arms 1
At the time corresponding to the operating height of 01 and 102, the clamp cylinder 78 operates to temporarily fix the triangular plate 78, so that when the arms 101 and 102 rotate, the arms do not collide with the rice balls. You can wrap rice balls beautifully.

(Example) A guide plate 1 for guiding rice balls in transition is arranged near the downstream side of the base 10, and a plurality of through triangular holes 11 and 12 are opened facing each other on the upstream and downstream sides of the guide plate 1. ing.

Each triangular hole 11, 12 has one triangular apex 13 facing upstream, a cut groove 14 is opened further upstream from the upstream apex, and the other two apexes are perpendicular to the cut groove 14. Cut grooves 15, 15 are provided in the direction of the cut.

A straight section connecting both the upstream and downstream triangular holes 11 and 12 becomes a transition path for the rice ball.

A sheet conveying device 2 is provided below the guide plate 1. The sheet conveyance device 2 is provided with parallel rotation shafts 21, 21 perpendicular to the sheet feeding direction on the upstream side of the base 10 and slightly downstream of the triangular hole 11 on the upstream side of the guide plate 1, respectively. A plurality of narrow belts 22, 22 are stretched between two belts 21, 21 for each transition path of the rice ball.

A sheet contact piece 23 is provided above the downstream side of the sheet conveying device 2. The corresponding piece 23 prevents the sheet from shifting when the rear part of the sheet S is located below the upstream triangular hole 11 of the guide plate 1.

Above the guide plate 1, sheet stockers 24 to 24 are arranged corresponding to the transfer path of each rice ball.
Each sheet stocker 24 has a wall plate 25 erected on the guide plate 1 with an interval corresponding to the width of the sheet S,
A feed belt 26, 26 is stretched endlessly between the belts 25 and 25, and a push plate 27 is fixed on the belt.

The sheets S are lined up and stocked on the feed belt 26, and the sheets S are gradually pushed rearward by running the feed belts 26, 26 with a belt drive device (not shown).

The belt drive device operates in response to the decrease in the number of sheets S detected by a detection device such as a phototube placed at a suitable location on the stocker 24, and always keeps the sheet S in contact with a stopper 28 placed at the rear end of the stocker 24.

A sheet take-out device 3 is provided between the stocker 24 and the sheet conveyance device 2. The sheet take-out device 3 takes out the sheets S one by one from the stocker 24 and transfers them onto the two belts 22, 22 of the sheet conveyance device 2.

The extraction device 3 is provided with a suction nozzle 33 at the tip of an arm plate 32 attached to a hollow rotating shaft 31, and the nozzle 33 is connected to a blower 36 via a flexible pipe 34 and a duct 35.

A switching valve 37 is provided on the pipe 34, and the switching valve 37 operates in conjunction with the ups and downs of the arm plate 32, so that the nozzle 33 and the blower 36 communicate with each other when the arm plate 32 is raised toward the stocker 24. The sheet S is sucked and falls backward, and when the sheet S is positioned on the belts 22, 22 of the conveying device 2, the switching valve 37 is switched and the blower 36 and flexible pipe 34
are communicated with the outside air, the vacuum of the nozzle 33 is broken, and the sheet S is released.

Onigiri conveying device 4 is placed below the sheet conveying device 2.
will be deployed.

The rice ball conveying device 4 is formed by extending parallel chains 41, 41 on the guide plate 1 along the rice ball transfer path, and attaching a frame plate 42 spanning between the chains with a close interval between them. .

Triangular saucer portions 43, 43, 43 are formed on each frame plate 42 in correspondence with the arrangement pitch of the triangular holes 11 on the upstream side of the guide plate 1. Each saucer part 4
A penetrating portion 44 is formed on the bottom surface of the rice ball 3 and is large enough to prevent the rice ball from falling.

The rice ball conveying device 4 is an intermittent rotation drive device 4.
5, the triangular hole 1 on the upstream side of the guide plate 1
Each time the tray portion 43 corresponds to the position directly below the conveyor device 4
stops and performs intermittent operation.

A push-up device 5 is provided at a position directly below the triangular hole 11 on the upstream side of the guide plate 1.

The push-up device 5 is configured by linking a triangular push-up plate 51 that can pass through the receiving tray portion 43 of the conveyance device 4 to a lifting device 52. The lifting device 52 is connected to the base 1
Pinion gears 54, 55, and 55 are fixed to the center and both ends of a rotating shaft 53 that is freely rotatable at
A rack rod 57, which is horizontally reciprocated by a cylinder 56, is meshed with the central pinion gear 54.

Also, pinion gears 55, 5 at both ends of the rotating shaft 53
5 are engaged with rack rods 58, 58 which are disposed so as to be vertically movable, and the ends of both rack rods 58, 58 are connected by a connecting plate 59.

On the connecting plate 59 there is an upstream triangular hole 1 on the guide plate 1.
Push-up rods 50 are provided to protrude in accordance with the arrangement pitches 1 and 11, and a triangular push-up plate 51, which is slightly smaller than the penetrating portion 44 of the saucer portion 43 of the rice ball conveying device 4, is provided at the tip of each rod 50. ing.

By the operation of the cylinder 56 of the thrusting device 5, the thrusting rod 50 rises and the upper surface of the thrusting plate 51 is aligned with the upper surface of the guide plate 1.

On the guide plate 1, a rice ball ejecting device 6 is provided further upstream than the triangular hole 11 on the upstream side.

The ejecting device 6 inserts a protruding block 64 having a V-shaped notch 63 into the protruding plate 62 driven by a cylinder 61 into the triangular hole 11 of the guide plate 1.
The rice balls that are pushed up onto the guide plate 1 through the upstream triangular hole 11 of the guide plate 1 by the push-up device 5 are pushed up into the notches 63 of the block 64. Insert it and push it out onto the triangular hole 12 on the downstream side.

As shown in FIG. 12, a rectangular elevating frame 65 is provided below the triangular hole 12 on the downstream side of the guide plate 1, and a rice ball support device 75 and a seal folding device 7 are provided on the elevating frame.

The elevating frame 65 is connected to a drive device (not shown) via a transmission means such as a rack 66 and a pinion 67, and moves up and down in a vertical plane.

The folding device 7 is provided with a pair of lifting shafts 71, 71 that freely slide through the upper rod 65a of the lifting frame 65, and the ends of both shafts 71 are connected by parallel support plates 72, 73, so that the lifting frame 65 The piston rod 70a of the cylinder device 70 disposed on the lower rod 65b is connected to the lower support plate 73, and the upper support plate 73 has a piston rod 70a on the upstream side of the triangular hole 12 corresponding to each of the triangular holes 12 on the downstream side of the guide plate 1. Folding plate 7 along the two sides sandwiching the facing top
4,74 are provided to protrude upward.

The support plate 72 and therefore the folding plate 74 are moved up and down by the cylinder device 70 independently of the elevation of the elevating frame 65.

As shown in FIGS. 12 and 13, the support device 75 has support tubes 76 projecting upward from the upper rod 65a of the lifting frame 65 in correspondence with the respective downstream triangular holes 12 of the guide plate 1. A support shaft 77 whose upper end passes through the upper support plate 72 of the folding device 7 and whose lower end passes through the upper rod 65a of the lifting frame 65 is slidably fitted, and the support shaft 7
A triangular plate 78 is provided at the upper end of the guide plate 7 to fit into the triangular hole 12 of the guide plate 1 with a margin.

A cylinder device 79 for clamping the support shaft 77 is provided in the support tube 76, and the cylinder device 79
The piston rod 79a of No. 9 is slidably fitted into a through hole 76a formed in the wall surface of the support cylinder 76, and can come into contact with the support shaft 77.

A push-up plate 77a is fixed to the lower end of the support shaft 77, and a guide shaft 77b projecting downward from the upper rod 65a of the elevating frame 65 is slidably fitted into the push-up plate 77a. The push-up plate 77a and therefore the support shaft 77 are always urged upward by the fitted spring 77c.

A support bracket 77d is provided at the upper end of the support shaft 77, and a leg piece 78a protruding from the lower surface of the triangular plate 78 is pivotally fixed to the bracket 77d.
is attached to a support shaft 77 so as to be able to fall toward the downstream side.

Further, the triangular plate 78 is always urged by a spring 78c in the direction of falling toward the upstream side, and the lower surface of the plate 78 is placed against the upper end of the support shaft 77 to maintain a horizontal posture.

A contact piece 78b that can enter the cut groove 14 on the upstream side of the triangular hole 12 of the guide plate 1 is protruded from the top of the upstream side of the triangular plate 78, and a fall stopper 78d is provided on the downward path of the corresponding piece 78b. There is.

A U-shaped mounting base 81 is provided above the downstream triangular hole 12 of the guide plate 1, and a sheet holding device 8 and a sheet thermal welding device 87 are provided on the mounting base.

As shown in FIGS. 2 and 6, the sheet holding device 8 has a cylinder 83 located approximately in the center of a mounting base 81 with a piston rod 82 facing downward.
A support plate 84 is fixed to the tip of 3 in a direction perpendicular to the transition path of the rice ball.

Triangular holding plates 86, 86 are protruded from the lower surface of the support plate 84 in correspondence with the triangular holes 11 of the guide plate 1. Two folding plates 8 that can be inserted into and removed from the triangular hole 12
5,85 are provided to protrude downward.

The bottom dead center of the holding plate 86 is at a height away from the guide plate 1 by the minimum thickness of the rice ball, which varies.

A through hole 86a is formed in the presser plate 86, into which an iron 80 (described later) can enter.

The heat welding device 87 has a cylinder 88 arranged approximately in the center of the mounting base 81 with the piston rod facing downward.
A support plate 89 is fixed to the tip of the piston rod perpendicular to the transition path of the rice ball, and a heat welding iron 80 is provided on the lower surface of the support plate 89 in accordance with the arrangement pitch of the downstream side triangular holes 12 of the guide plate 1.

As shown in FIG. 7, two air injection nozzles 94, 94 are provided for each triangular hole 12 further downstream of each triangular hole 12 on the downstream side of the guide plate 1.

Each of the injection nozzles 94, 94 is arranged along an extension line of two oblique sides facing upstream of the triangular hole 12.

Parallel plates 95, 95 are arranged above the injection nozzles 94, 94 and perpendicular to the transfer path of the rice balls, and a sheet folding device 100 is arranged between the parallel plates 95, 95.

As shown in FIGS. 7 and 8, the convolution device 100 has a pair of large and small arms 101 between parallel plates 95 and 95.
102 is rotatably supported in a horizontal plane, and a triangular piece 104 corresponding to the triangular shape of a rice ball projects from the large arm 101.

The triangular piece 104 has a through hole 103 that allows the heat welding iron 80 to move in and out.

The small arm 102 rotates in contact with the top surface of the rice ball 9 on the guide plate 1, and the large arm 101 rotates in contact with the top surface of the rice ball 9 on the guide plate 1.
Rotates slightly above 02.

Pivot shafts 105, 1 of both arms 101, 102
06 are fitted and fixed with gears 107 and 108, and the gear 108 on the large arm 101 side is directly linked to the rack 110, and the gear 107 on the small arm 102 side is linked to the rack 110 via an idle gear 109.

The rack 110 is connected to a cylinder 111, and when the cylinder 111 operates, both arms 101,
102 is moved as shown by the two-dot chain line in FIG.

The height positions of the arms 101 and 102 from the guide plate 1 are approximately equal to the minimum thickness of the rice ball, which varies.

The above-mentioned packaging device is controlled by detectors such as phototubes and limit switches placed at appropriate locations, and continuously performs the following operations.

[Removal of sheet]

As shown in FIG. 3, the arm 32 of the sheet take-out device 3 rises, the suction nozzle 33 at the tip of the arm 32 sucks the rearmost sheet S of the stocker 24, and then the arm 32 falls backward. The suction of the sheet S is released while the suction sheet S is placed on the belts 22, 22 of the sheet conveying device 2.

The sheet S is sent downstream by the rotation of the belt 22, and stops moving when it hits the contact piece 23.

The belt 22 continues to rotate.

[Onigiri supply]

On the other hand, rice balls are sequentially put into each saucer section 43 of the rice ball conveying device 4 by an operator or by an automatic loading device (not shown), and the rice balls filled with the rice balls are placed in the tray portions 43 of the rice ball conveying device 4 by the intermittent operation of the rice ball conveying device 4. 43
stop sequentially below the upstream triangular hole 11 of the guide plate 1.

[Pushing up the rice ball]

The push-up device 5 operates in synchronization with the stoppage of the rice ball conveying device 4, and the saucer portion 4 is stopped.
3, the thrusting plate 51 rises.

The rice ball 9 is lifted up by the push-up plate 51, passes through the triangular hole 11 of the guide plate 1, and reaches the upper surface of the guide plate 1, as shown in FIG. 9, while lifting the sheet S waiting above.

When the rice ball 9 passes through the triangular hole 11, the sheet S is bent downward along the outer edge of the rice ball by the edge of the triangular hole 11, and the sheet S covers the rice ball in the state shown in FIG. 11B.

At this time, the ears S ₄ , S ₄ at both upper ends of the sheet S ₂ pass through the cut grooves 15 , 15 of the triangular hole 11 and do not wrinkle.

[Protruding rice ball]

The cylinder 61 of the ejecting device 6 operates, and each ejecting block 64 applies the rice ball 9 to its V-shaped notch 63 and ejects the rice ball 9 to the position of the triangular hole 12 on the downstream side.

At this time, as shown in FIG. 10A, in the downstream triangular hole 12, the triangular plate 78 of the support device 75 is raised and on standby, and the rice ball does not fall from the triangular hole 12.

When the rice ball 9 is pushed out from the upstream triangular hole 11 to the downstream triangular hole 12 as described above, the 11th
The sheet rectangular folded piece _S2 hanging from the downstream edge of the rice ball shown in Figure B is folded to the bottom side of the rice ball 9 as shown in Figure 11C, and the sheet hanging from the other side edge of the rice ball is further folded. The triangular folded pieces S ₃ and S ₃ are bent outward.

[Air injection]

At the same time as the rice ball 9 is pushed out onto the downstream side triangular hole 12 of the guide plate 1, air is injected from the air injection nozzles 94, 94 shown in FIG. 7, and the downstream side of the rice ball 9 shown in FIG. The short ears S ₄ and S ₄ of the sheet protruding outward are the 11th
It is folded inward as shown in Figure D.

Note that even if air is constantly injected from the air injection nozzle 94, the same effect as described above is achieved.

[Sheet presser]

In the ejecting device 6, the sheet holding device 8 located above the rice ball 9 is activated to lower the holding plate 86 and the folding plates 85, 85 on both sides of the plate in synchronization with the timing when the block 64 retreats to the upstream side. Press down the two sides sandwiching the top surface and the top of the rice ball 9 on the upstream side (FIG. 10B).

At this time, when the thickness of the rice ball is thicker than the planned minimum thickness, the rice ball is pushed downward by the holding plate 86, and the triangular plate 7 supporting the rice ball is pressed down.
8 is lowered against the spring 77c as shown in FIG.

When the presser plate 86 reaches the bottom dead center, the clamp cylinder device 79 of the triangular plate 78 operates to clamp the support shaft 77 and hence the triangular plate 78 to the lifting frame 65.

[Folding the sheet]

While the sheet S covering the top and side surfaces of the rice ball is being held down by the sheet holding device 8, the folding device 7 is operated and the support plate 72 is raised.

As shown in FIGS. 6 and 10C, a folding plate 74 protruding from the upper surface of the support plate 72 is inserted upward from the gap between the triangular hole 12 of the guide plate 1 and the triangular plate 79 fitted into the hole 12. At this time, both sides of the sheet S are folded upward along the edge of the rice ball 9 as shown in FIG. 11E.

[Folding the seat]

As described above, while the folding plate 74 of the folding device 7 folds the sheet S end portion upward and presses the sheet so that it does not fall, the presser plate 86 and the folding plate 85 of the presser device 8 rise (10th Figure D), then the 8th
The folding device 100 operates as shown in FIG.
Lay S ₅ and S ₅ on top of each other at the top of rice ball 9.

At this time, even if there is variation in the thickness of the rice ball, the height of the top surface of the rice ball is pressed by the presser plate 86 as described above, and the height of the upper surface of the rice ball is lowered to the bottom dead center of the presser plate 86.
It corresponds to a rotating surface height of 1,102 degrees, so the arm will not collide with the rice ball and crush it, allowing it to be wrapped beautifully.

[Sheet welding]

The heat welding device 87 operates with the arms 101 and 102 covering the top surface of the rice ball 9, and the first
As shown in FIG. 0F, the iron 80 descends, passes through the hole 86a of the holding plate 86 of the sheet holding device 8, enters the through hole 103 of the large arm 101, and thermally welds the overlapping portions of the sheet ends.

As a result, the triangular rice balls are beautifully packaged as shown in the 11th floor.

[Discharge of wrapped rice balls]

The heat welding iron 80 rises, and the arms 101,
102 has returned to its original position, the support device 75
Then, the folding device 7 is operated, and the triangular plate 78 supporting the rice ball 9 and the folding plate 74 that abuts the side of the rice ball are lowered as shown in FIG. ,
The rice balls 9 slide down from the triangular plate 79 as shown in FIG. 10H, are placed on a waiting discharge conveyor (not shown), and are discharged.

By repeating the above operations, the rice balls are continuously wrapped.

When eating a rice ball, the sheet S is removed, the sheet S is torn to take out the sheet-shaped seaweed 90, and the rice ball is wrapped in the seaweed 90.

As described above, in the present invention, rice balls are automatically packaged by simply putting the rice balls into the rice ball conveying device, and the packaging work can be performed much more efficiently and hygienically than conventional manual packaging. too,
Even if the thickness of the rice balls varies, the rice balls can be wrapped beautifully without losing their shape.

[Brief explanation of drawings]

Fig. 1 is a plan view of the packaging device, Fig. 2 is a sectional view of the packaging device, Fig. 3 is a sectional view of the area around the ejection device, Fig. 4 is a slope view of the guide plate and ejection device, and Fig. 5 is a presser foot. Fig. 6 is a perspective view of the sheet holding device, iron, support device, and folding device; Fig. 7 is a plan view of the folding device; Fig. 8 is a perspective view of the folding device; Fig. 9 is a perspective view of the folding device. Explanatory diagram of the state, Figure 10A
~H is an explanatory diagram of the operating state on the downstream side triangular hole, Figures 11A to F are explanatory diagrams showing the order of sheet folding,
FIG. 12 is a front view of the sheet folding device and the rice ball support device, FIG. 13 is a sectional view of the rice ball support device, and FIG. 14 is an explanatory diagram of the state in which the rice ball support device is lowered according to the thickness of the rice ball. 1... Guide plate, 11... Upstream triangular hole, 12...
...Downstream triangular hole, 2...Sheet conveyance device, 3...
Sheet take-out device, 4...Rice ball conveyance device, 5...
... Pushing up device, 6... Ejecting device, 7... Folding device, 75... Supporting device, 8... Sheet pressing device, 9... Rice ball, 100... Folding device.

Claims (1)

[Scope of Claims] 1. A guide plate which is supported horizontally, whose upper surface serves as a transition path for the triangular rice balls 9, and which has triangular through holes 11 and 12 on the upstream and downstream sides of the transition path, respectively, with their tops directed toward the upstream side. 1, a sheet conveying device 2 disposed below the guide plate 1 and conveying the packaging sheet S so that the upstream portion of the sheet is located below the upstream triangular hole 11 of the guide plate 1; The rice ball conveyor is equipped with a large number of triangular saucers 43 disposed below the guide plate 1 and has a through hole 44 on the bottom surface, and moves intermittently and sequentially stops the saucers 43 immediately below the triangular holes 11 on the upstream side of the guide plate 1. The device 4 and the push-up plate 51, which is disposed directly below the upstream triangular hole 11 of the guide plate 1 and is connected to the lifting device 52, are passed through the penetration part 44 of the receiving tray part 43 to raise the guide plate 1.
a rice ball pushing-up device 5 that projects into and out of the upstream triangular hole 11; and a rice ball pushing device 6 that is disposed on the guide plate 1 and projects the rice ball that emerges from the upstream triangular hole 11 onto the downstream triangular hole 12. , a triangular plate 78 that is movable up and down below the triangular hole 12 on the downstream side of the guide plate 1, and supports the rice ball by appearing in and retracting from the triangular hole 12 with enough room; and a triangular hole on the downstream side of the guide plate 1. Folding plates 85, 8 are disposed above the triangular hole 12 so as to be movable up and down, and extend along two sides from the top facing the upstream side of the triangular hole 12 to the other top.
5 facing downward and presses down the top surface of the rice ball on the triangular plate 78; A folding device 7 has folding plates 74, 74 facing upward along both sides, and a pair of arms 101, 102 arranged near the downstream triangular hole 12 of the guide plate 1 are placed on the triangular plate 78 at slightly different heights. A folding device 100 that moves the sheet pieces horizontally in a direction slightly higher than the top surface of the rice ball so that they approach each other and folds the sheet pieces that protrude upward from the top surface of the rice ball so that they overlap each other, and the triangular plate 78 folds the triangular plates. A clamp cylinder 78 for the lifting frame 65 is connected to the triangular plate 78, and when the holding plate 86 presses the rice ball on the triangular plate 78, the thickness of the rice ball is adjusted. is thicker than the set thickness, the triangular plate 78 is lowered against the spring, and the height of the top surface of the rice ball corresponds to the operating height of the pair of arms 101 and 102 of the folding device 100. Device.