JP2010195407A - Rolled food packaging device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rolled food packaging device for surely sealing a rolled food such as rolled Sushi with a film. <P>SOLUTION: The rolled food packaging device which uses a film comprising a rectangular film body and a protrusive piece protruding from each of facing two sides of the film body is provided with a transfer mechanism for transferring a rolled food in a state of being placed on the surface of the film, and a wrapping mechanism for wrapping the film around the periphery of the food transferred by the transfer mechanism. The transfer mechanism is provided with an erecting member for erecting protrusive pieces of the film roughly at right angles. The wrapping mechanism is provided with a covering means for covering both ends of the food with the protrusive pieces erected roughly at right angles and a wrapping means for wrapping the film body around the food both ends of which are covered by the covering means. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a roll food packaging apparatus for packaging roll food such as sushi rolls with a film.

In recent years, sushi rolls are often sold at retail stores such as convenience stores and supermarkets.
Rolled sushi sold at such retail stores generally have a synthetic resin film interposed between the seaweed and sushi rice to prevent the seaweed from becoming damp and dull. is there.

As a synthetic resin film interposed between seaweed and sushi rice, for example, as disclosed in Patent Document 1, a rectangular film main body and two opposite sides of the film main body respectively protrude. A film having a protruding piece is used.
And the laver is accommodated in the inside of this film, the surrounding surface of sushi rice is coat | covered with the film main body, and the both end surfaces of sushi rice are coat | covered with a protrusion piece. At this time, the sushi rice is sealed by the projecting piece being caught inside (downward) the film body.

However, conventionally, the sealing of the sushi rice may become incomplete due to insufficient protrusion of the protruding piece into the film body, resulting in a gap, resulting in the sushi rice becoming dry and hard, In some cases, bugs such as insects may invade.
In addition, roll-shaped foods other than sushi rolls may suffer from problems such as easy deterioration of food due to insufficient sealing with films.

JP 2003-276882 A

  The present invention has been made to solve the above-described problems, and provides a rolled food packaging apparatus capable of reliably sealing rolled food such as rolled sushi with a film.

  The invention which concerns on Claim 1 is an apparatus for packaging roll-shaped foodstuffs, such as a rolled sushi, with a film, Comprising: The said film is respectively from a rectangular-shaped film main body and two side sides which this film main body opposes. A film having a protruding piece that protrudes, a conveyance mechanism that conveys the roll-shaped food on the surface of the film, and a winding mechanism that winds around the roll-shaped food that has been conveyed by the conveyance mechanism. The transport mechanism has a rising member that raises the protruding piece of the film at a substantially right angle, and the winding mechanism has the protruding piece that is raised at the substantially right angle of the roll-shaped food. A covering means for covering both ends, and a winding means for winding the film body around the roll food in a state where both ends are covered by the covering means. On roll-shaped food packaging device that.

In the invention according to claim 2, the covering means includes a pair of left and right arms that reciprocate in the length direction of the roll food.
Each of the pair of left and right arms includes a front arm disposed in the vicinity of the front side of the roll food and a rear arm disposed in the vicinity of the rear side, and the front arm and the rear arm reciprocate integrally. The roll-shaped food packaging apparatus according to claim 1.

  According to a third aspect of the present invention, the covering means includes a pair of left and right pressing rollers that reciprocate in the length direction of the roll food, and the axial direction of each of the pair of left and right pressing rollers is the above-described axial direction. The roll-shaped food packaging apparatus according to claim 1 or 2, wherein the roll-shaped food packaging device is arranged so as to coincide with the length direction of the roll-shaped food and the front end surface of the roll-shaped food presses the end surface of the rolled food. About.

  According to a fourth aspect of the present invention, the covering means includes a pair of left and right claw members that reciprocate in the length direction of the roll food, and the pair of left and right claw members are disposed on an outer peripheral surface of the pressing roller. It is formed in a substantially semi-cylindrical shape, and is arranged so as to cover the upper surface of each of the pressure rollers and to protrude from the front end surface of the pressure roller when moving forward. It is related with the roll-shaped food packaging apparatus of Claim 3.

  In the invention according to claim 5, a protrusion is formed on the lower surface of the claw member, and a circumferential groove having a width wider than the width of the protrusion is formed on the outer peripheral surface of the pressing roller. The roll food packaging apparatus according to claim 4, wherein the tip of the claw member protrudes and protrudes from the tip of the pressing roller by moving within the groove width.

  The invention according to claim 6 is the roll-shaped food according to claim 5, wherein the claw member moves integrally with the pressing roller when the protrusion is engaged with the groove of the pressing roller when moving forward. It relates to packaging equipment.

  In the invention according to claim 7, the pressing roller is urged by a spring in a direction away from the end face of the roll food, and the claw member resists the urging force of the spring during advancement. The roll food packaging apparatus according to claim 6, wherein the pressing roller is moved.

  The invention according to claim 8 is characterized in that the pair of left and right arms and the pair of left and right pressing rollers reciprocate in the length direction of the roll food by driving a single cylinder. 7. The rolled food packaging apparatus according to any one of 7 above.

  The invention according to claim 9 is characterized in that the winding means includes an endless track spanned by a plurality of rollers such that the upper surface is flat, and the roll-shaped food that has been transported by the transport mechanism is The roll food packaging apparatus according to any one of claims 1 to 8, wherein an axial direction is supplied to an upper surface of the endless track so as to be parallel to a width direction of the endless track.

  The invention according to claim 10 relates to the roll-shaped food packaging apparatus according to claim 9, further comprising a weight member disposed below the inner surface of the endless track and imparting tension to the endless track.

  The invention according to claim 11 includes a second cylinder that integrally raises and lowers the pressing roller and the claw member, and the pressing roller pushes down the upper surface of the endless track when descending, and the winding means includes: 10. The film body is wound around the roll-shaped food by winding the endless track around the roll-shaped food when the upper surface of the endless track is pushed down. Or it is related with the roll-shaped food packaging apparatus of 10.

  According to a twelfth aspect of the invention, there is provided a stopper for preventing the backward movement of the claw member when the claw member is moved backward by fixing the pressure roller at the forward movement position when the pressure roller is lowered. The roll-like food packaging apparatus according to claim 11, wherein retreat is prevented.

  The invention according to claim 13 is provided with an extruding means for extruding the roll-shaped food placed on the upper surface of the endless track to the downstream side after the film is wound by the winding mechanism. It is related with the roll-shaped food packaging apparatus in any one of thru | or 12.

  The invention according to claim 14 relates to the roll-shaped food packaging apparatus according to any one of claims 1 to 13, wherein the roll-shaped food is rolled sushi.

  According to the first aspect of the present invention, after the projecting piece of the film is raised at a substantially right angle by the rising member in the transport mechanism, the protruding piece in a state of being raised at a substantially right angle by the covering means is removed at both ends of the roll food. Since the film body can be wound around the roll-shaped food in which both ends are covered by the winding means, the roll-shaped food such as rolled sushi can be completely sealed and wrapped with the film. It becomes possible.

  According to the invention which concerns on Claim 2, it can fold so that the protrusion piece of a film may be pinched | interposed from the front and back of a roll-shaped foodstuff by pinching the left-right both ends of a roll-shaped foodstuff from the front and back with a pair of left and right arms. Therefore, when winding a film main body around roll-shaped foodstuffs, a protruding piece can be reliably accommodated and roll-shaped foodstuffs, such as rolled sushi, can be completely sealed and packaged with a film.

  According to the invention which concerns on Claim 3, the protruding piece of a film can be closely_contact | adhered to the both end surfaces of a roll-shaped foodstuff by pressing the both end surfaces of a roll-shaped foodstuff with a pair of right and left press rollers. Therefore, when winding a film main body around roll-shaped foodstuffs, a protruding piece can be reliably accommodated and roll-shaped foodstuffs, such as rolled sushi, can be completely sealed and packaged with a film.

  According to the invention which concerns on Claim 4, by making the pair of left and right claw members advance and projecting the front end portion from the front end surface of the pressure roller, the upper surface of the roll food in a state where both end surfaces are pressed by the pressure roller. The projecting piece of the film can be folded back. Therefore, it becomes possible to coat | cover both ends of a roll-shaped foodstuff reliably with a protrusion piece.

  According to the fifth aspect of the present invention, the protrusion formed on the lower surface of the claw member moves within the groove width formed on the outer peripheral surface of the pressure roller, and the tip portion of the claw member protrudes from the tip surface of the pressure roller. By doing so, the protruding amount of the claw member can always be made constant, and the protruding piece of the film can be reliably folded back.

  According to the invention of claim 6, when the claw member moves forward, the protrusion is engaged with the groove of the pressure roller, so that the pressure roller can be advanced together with the claw member by moving integrally with the pressure roller. The protruding piece can be folded back by the claw member while pressing the film against the both end faces of the roll-shaped food by the pressing roller. Therefore, both ends of the roll-shaped food can be reliably covered with the protruding pieces.

  According to the invention which concerns on Claim 7, the press roller is urged | biased by the direction spaced apart from the end surface of a roll-shaped foodstuff with a spring, and a nail | claw member moves a press roller against the urging | biasing force by a spring at the time of advance. This makes it possible to automatically perform the backward movement of the pressing roller using the biasing force of the spring without providing a separate drive source.

  According to the eighth aspect of the present invention, the pair of left and right arms and the pair of left and right pressing rollers reciprocate in the length direction of the roll-shaped food by driving a single cylinder, so that each of the arms and the pressing rollers is provided. There is no need to provide a drive source, and the number of members can be reduced to reduce the size of the apparatus.

  According to the invention according to claim 9, the roll-shaped food is supplied to the upper surface of the endless track so that the axial direction of the food is perpendicular to the width direction of the endless track. The film body can be surely wound around the food.

  According to the invention which concerns on Claim 10, even when the thickness (weight) of roll-shaped food differs by providing the weight member which is arrange | positioned under the inner surface of an endless track | truck, and provides tension | tensile_strength to this conveyor By moving the weight up and down, the conveyor can always be stretched, and it is possible to deal with roll-shaped foods of various thicknesses.

  According to the eleventh aspect of the invention, since the film body can be wound around the roll-shaped food by pushing down the endless track using the lowering operation of the pressing roller, the covering operation and the winding operation are common. This can be done in a space, and the apparatus can be miniaturized.

  According to the twelfth aspect of the present invention, only the claw member can be moved backward while leaving the pressing roller at the forward position when the pressing roller is lowered. Therefore, when the film main body is wound around the roll-shaped food, the claw member is not obstructed, and the film main body can be tightly wound around the peripheral surface of the roll-shaped food.

  According to the invention of claim 12, since the roll-shaped food placed on the upper surface of the endless track can be pushed downstream after the film is wound by the winding mechanism, It becomes possible to quickly discharge the endless track, and a large number of roll foods can be packaged continuously and efficiently.

  According to the invention of claim 13, it is possible to obtain a sealed and wrapped sushi roll in which the sushi rice becomes dry and hard, and insects and the like do not enter through the gaps in the package.

It is a front view which shows the whole structure of the roll-shaped food packaging apparatus which concerns on this invention. It is a top view which shows the whole structure of the roll-shaped food packaging apparatus which concerns on this invention. It is a right view which shows the whole structure of the roll-shaped food packaging apparatus which concerns on this invention. It is a figure which shows the film to which the seal label was adhere | attached. It is a figure which shows the state by which roll-shaped foodstuffs (roll-shaped sushi rice in which seaweed is not wound) were mounted on the film. It is a figure which shows the state which started up the protrusion piece of the film substantially perpendicularly. It is explanatory drawing which showed the motion of the coating | coated means in process order. It is explanatory drawing which showed the motion of the coating | coated means in process order. It is explanatory drawing which showed the motion of the coating | coated means in process order. It is explanatory drawing which showed the motion of the coating | coated means in process order. It is explanatory drawing which showed the motion of the coating | coated means in process order. It is a figure which shows the nail | claw member and moving member which are some components of a coating | coated means. It is a figure which shows the nail | claw member which is a part of component of a coating | coated means. It is a figure which shows operation | movement of the press roller which is a part of component of a coating | coated means. It is explanatory drawing which showed the motion of the winding means in process order. It is explanatory drawing which showed the motion of the winding means in process order. It is explanatory drawing which showed the motion of the winding means in process order. It is explanatory drawing which showed the motion of the extrusion means. It is a figure which shows the rolled sushi packaged with the apparatus which concerns on this invention.

DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments of a roll-shaped food packaging apparatus according to the invention will be described with reference to the drawings.
1-3 is a figure which shows the whole structure of the roll-shaped food packaging apparatus based on this invention, Comprising: FIG. 1 is a front view, FIG. 2 is a top view, FIG. 3 is a right view.
The rolled food packaging apparatus according to the present invention is an apparatus for packaging rolled food with a film. Rolled sushi is suitable as the roll-shaped food to which the apparatus according to the present invention is applied, but other food may be used as long as it is roll-shaped and entirely packaged with a film. In the description and drawings, the case where the roll-shaped food is rolled sushi is described as an example.

  The apparatus according to the present invention was stocked in a label adhering portion (1) for adhering a seal label to a film, a film stock portion (2) for stocking a film to which a seal label was adhered, and a film stock portion (2). A film supply mechanism (3) that supplies films one by one to the transport mechanism, a transport mechanism (4) that transports the film supplied by the film supply mechanism (3), and a transport mechanism that is being transported by the transport mechanism (4) A placing portion (5) for placing the roll-shaped food on the film, and a winding mechanism (6) for winding the periphery of the roll-shaped food placed on the film that has been transported by the transport mechanism with the film. I have.

The label adhering portion (1) is a portion for adhering a seal label to the surface end of the film wound around the roll-shaped food, and a reel that is wound with a large number of seal labels affixed to a strip-shaped mount. (11) and a take-up reel (12) for taking up the strip-shaped mount unwound from the take-out reel (11).
In the label bonding part (1), in the process of unwinding the belt-like mount from the unwinding reel (11) and winding it onto the take-up reel (12) by the same mechanism and operation as a conventionally known label bonding apparatus. Remove the label from the backing and attach it to the film.

FIG. 4 is a view showing a film to which a seal label is bonded by the label bonding portion (1).
The film (7) has a rectangular film main body (71) and rectangular protruding pieces (72) protruding in opposite directions from two opposing sides (long sides) of the film main body (71). It is a transparent film made of synthetic resin.
The film body (71) has a two-layer structure, and laver (N) is accommodated in the gap between the upper film and the lower film.
The protruding piece (72) has a width (W) slightly shorter than half of the long side of the rectangular film body (71), and is provided over a range from one end of the long side to the vicinity of the intermediate part. Yes. As will be described later, the protruding piece (72) is raised at a substantially right angle, but its rising base end (73) is located slightly inside the long side of the film body (71).

  The seal label (74) is adhered to one short side (75) far from the protruding piece (72) of the film body (71) so that the adhesive surface is on the inner side of the film (the front side in FIG. 4). Bonding is performed so that about half of the surface is exposed from the short side (75).

The film stock part (2) is a part for stacking and stocking the film (7) to which the seal label (74) is adhered in the label adhesion part (1). In the figure, the film is omitted.
The film stock portion (2) surrounds the frame (21) in which a hole having a substantially T-shape in plan view that is slightly smaller than the outer shape of the film (7) is formed, and the upper surface of the frame (21). A plurality of rods (22) provided in a vertical direction are provided.
The film (7) is placed on the upper surface of the frame body (21) of the film stock section (2) and positioned by being surrounded by the rod (22).

The film supply mechanism (3) is disposed below the film stock section (2), and allows the film placed on the frame (21) to be moved downward from a substantially T-shaped hole portion in plan view. A suction nozzle (31) is provided for suctioning toward.
Above the film supply mechanism (3) and below the film stock section (2), the starting end of the belt conveyor (41) constituting the transport mechanism (4) is located. The belt conveyor (41) is the film stock section. A hole (42) is provided in a portion directly under the frame (21) of (2). The size of the hole (42) is sufficiently smaller than the outer shape of the film (7).
The suction nozzle (31) of the film supply mechanism (3) can be projected and retracted from the hole (42), and the suction force generated in the suction nozzle (31) is placed on the frame (21). Acts on film (7). Since the film (7) is thin and can be deformed, one sheet at a time passes through a substantially T-shaped hole in a plan view of the frame (21) while being slightly deformed when subjected to a suction force, to the starting end of the belt conveyor (41). Fall.

The transport mechanism (4) includes a belt conveyor (41) for transporting the film (7) supplied by the film supply mechanism (3), and left and right erected on both ends in the width direction of the belt conveyor (41). A pair of plate-like rising members (42) are provided.
The rising member (42) is provided along the length direction in the vicinity of the terminal end portion of the belt conveyor (41). As shown in FIG. 1, the upper side of the rising member (42) is inclined so as to gradually increase as it approaches the terminal end of the belt conveyor (41). In FIG. 1, reference numeral (42a) is attached to the inclined portion.
The distance between the pair of rising members (42) is set to be the same as or slightly longer than the width of the film body (71) (the length of the short side (75)).

The placement section (5) is a work table installed on the side of the belt conveyor (41), and is installed on the upstream side in the transport direction from the position where the rising member (42) is provided.
A large number of roll-shaped foods (rolled sushi rice in a state where no seaweed is not wound) are placed on the placement section (5) (not shown). ) Place on the film (7) that has been transported.
At this time, the roll-shaped food (R) is positioned between the two protruding pieces (72) so that the axial direction (length direction) thereof is parallel to the short side (75) of the film body (71). (See FIG. 5). The length of the roll-shaped food (R) is substantially the same as the distance (D) between the two rising base ends (73).

When the film (7) on which the roll-shaped food (R) is placed by the placing portion (5) is conveyed to the downstream side by the belt conveyor (41), the protruding piece (72) of the film (7) Is placed on the upper side of the rising member (42), gradually rises along the inclination of the upper side as it is conveyed downstream, and finally rises at a substantially right angle (see FIG. 6). In addition, the white arrow of FIG. 6 has shown the conveyance direction of the film by a belt conveyor.
The film (7) on which the roll food (R) is placed on the upper surface is supplied to the winding mechanism (6) of the next process with the protruding piece (72) raised substantially at a right angle as shown in FIG. Is done.

  The winding mechanism (6) includes a covering means (8) for covering the both ends of the roll-shaped food (R) with the protruding pieces (72) raised substantially at right angles, and both ends of the winding mechanism (6) are covered with the covering means. Winding means (9) for winding the film main body (71) around the rolled food in a state is provided.

  FIGS. 7 to 11 are explanatory views showing mainly the movement of the covering means (8) in the winding mechanism (6) in the order of steps, and FIGS. 12 and 13 are claw members and the like which are a part of the constituent elements of the covering means. FIG. 14 is a view showing the operation of the pressing roller which is a part of the constituent elements of the covering means, and FIGS. 15 to 17 mainly show the winding means (9) of the winding mechanism (6). It is explanatory drawing which showed a motion in process order.

The covering means (8) includes a pair of left and right arms (81) that reciprocate in the length direction of the roll food.
Each of the pair of left and right arms (81) is composed of a front arm (81a) and a rear arm (81b) which are arranged in front and back in parallel with each other. That is, there are a total of four arms, two on each side. 7 to 11, the rear arm is depicted only in FIG. 8 (c), which is a plan view. In other drawings, the rear arm is not depicted because it is hidden behind the front arm and cannot be seen. .
As shown in FIG.8 (c), the front arm (81a) is arrange | positioned in the front side vicinity of roll-shaped food (R), and the back arm (81b) is arrange | positioned in the back side vicinity of roll-shaped food (R). The rolled food (R) is sandwiched between the front arm (81a) and the rear arm (81b).

  The upper ends of each of the pair of left and right arms (81) are pivotally attached to a fixed upper base member (101) extending forward from the upper part of the base (10) of the apparatus by a pin (82). Yes. The pin (82) connects the front arm (81a) and the rear arm (81b), whereby the front arm (81a) and the rear arm (81b) move integrally.

The pair of left and right arms (81) are formed with elongated holes (811) extending in the length direction, and pins (83) are inserted into the elongated holes (611), respectively. The pins (83) are respectively fixed to the upper portions of the pair of left and right inverted L-shaped moving pieces (84), whereby the pair of left and right moving pieces (84) move to the left and right together with the arm (81).
Both ends of a cylinder (88) arranged in the horizontal direction are connected to the mounting portion of the pin (83) with respect to the moving piece (84), and the pair of left and right arms (81) is expanded and contracted by this cylinder (88). The pin (82) is reciprocated left and right (opening and closing operation) with the fulcrum as a fulcrum.

Claw members (85) are fixed to the lower ends of the pair of left and right moving pieces (84), respectively.
12A and 12B are diagrams showing the moving piece 84 and the claw member 85, wherein FIG. 12A is a front view, FIG. 12B is a side view, and FIG. 12C is a plan view. Moreover, FIG. 13 is a figure which shows the nail | claw member (85), (a) is a top view, (b) is a side view. Note that the front view of FIG. 12A corresponds to the view of FIG.

The claw member (85) has a substantially semi-cylindrical shape along the outer peripheral surface so as to cover the upper surface of a pressing roller (86) described later, and the tip thereof is divided into a plurality (three in the illustrated example).
A protrusion (851) is formed on the lower surface (back surface) of the claw member (85). The protrusion (851) enters a circumferential groove (861) formed on the outer peripheral surface of the pressing roller (86) described later.

A second cylinder (87) whose rod extends and contracts in the vertical direction is fixed to the upper part of the upper base member (101), and is below the upper base member (101) and at the rod tip of the second cylinder (87). The gate-shaped frame (102) is fixed.
A pressure roller (86) is attached to the inside of the left and right lower ends of the frame (102).

Each of the pair of left and right pressing rollers (86) has an end surface that is the end surface of the roll-shaped food so that the axial direction thereof coincides with the length direction of the roll-shaped food and forward (when moving inward) It is arrange | positioned so that may be pressed.
FIG. 14 is a view showing the operation of the pressing roller (86), and the pressing roller (86) will be described based on this drawing.
A shaft (103) having a diameter-enlarged portion (103a) formed at the tip is fixed inside the left and right lower ends of the frame (102), and the shaft (103) penetrates the pressure roller (86). It is inserted through the hole (863).
The inner diameter of the through hole (863) is substantially the same as the outer diameter of the enlarged diameter portion (103a), but the proximal end side (outer side) of the pressing roller (86) is larger than the enlarged diameter portion (103a). A small-diameter portion (863a) having a small diameter is also formed.
Inside the through hole (863), a spring (862) is interposed at a portion between the enlarged diameter portion (103a) and the small diameter portion (863a).
The spring (862) always urges the pressing roller (86) outward (to the right of FIG. 14 and away from the end face of the roll-shaped food) (see FIG. 14 (a)). Then, the claw member (85) is moved (advanced) together with the moving piece (84) to move the pressing roller (86) inwardly against the urging force of the spring (862) (on the left side in FIG. In the direction of approaching the end face of the food product (see FIG. 14B).

A circumferential groove (861) wider than the width of the protrusion (851) formed on the lower surface of the claw member (85) is formed on the outer peripheral surface of the pressing roller (86).
As shown in FIGS. 14A and 14B, the protrusion (851) moves within the groove width of the groove (861), so that the tip of the claw member (85) is moved from the tip surface of the pressure roller (86). Infest.
When the claw member (85) moves forward, the projection (851) engages with the groove (861) of the pressure roller (86), so that the claw member (85) and the pressure roller (86) move inward integrally ( Forward) (see FIG. 14B).

When the rod of the second cylinder (87) extends from the state of FIG. 7, the frame (102) descends, and at the same time, the pressing roller (86) attached to the frame (102) and the claw member ( 85) and the moving piece (84) are lowered. The descending distance is limited by the pin (83) attached to the moving piece (84) reaching the lower end of the elongated hole (811) (see FIG. 10).
When the pressing roller (86) is lowered, it pushes down the upper surface of the endless track (91) of the winding means (9) as will be described later.

Next, the configuration of the winding means (9) of the winding mechanism (6) will be described with particular reference to FIGS.
The winding means (9) is disposed below the covering means (8), and includes an endless track (91) that is stretched around a plurality of rollers so that the upper surface is flat. As the endless track (91), an endless wire formed in a ladder shape is preferably used.
The roll food that has been conveyed on the film by the belt conveyor (41) of the conveyance mechanism (4) has its axial direction (length direction) parallel to the width direction of the endless track (91). Is supplied to the upper surface of the endless track.

A weight member (92) is disposed below the inner surface of the endless track (91).
The weight member (92) is attached to one end portion of the rod-shaped member, and is rotatable about a fulcrum (92a) provided at the other end portion of the rod-shaped member.
The weight member (92) is subjected to a force to rotate downward due to its own weight, and tension is applied to the endless track (91) by the downward force.
The weight member (92) rises when the roll-shaped food placed on the upper surface of the endless track (91) is heavy, and falls when it is light. As a result, even when the thickness (weight) of rolled food (such as rolled sushi) is different, the weight can move up and down to always keep the conveyor stretched, and it can handle rolled foods of various thicknesses. It becomes possible to do.

The roll-shaped food is supplied to a position between two rollers (93a, 93b) on the upper surface among the plurality of rollers over which the endless track (91) is stretched. Further, this position is pushed down when the pressing roller (86) is lowered.
One of the two rollers (93b) on the downstream side is rotatable about the fulcrum (94) provided in the endless track (91) by the operation of the cylinder (95). . That is, when the rod of the cylinder (95) extends upward, the roller (93b) rotates from the downstream side to the upstream side (from the right side to the left side in the figure) around the fulcrum (94) (FIGS. 16 and 17).

As shown in FIG. 18, after the film is wound by the winding mechanism (6), the roll-shaped food placed on the upper surface of the endless track (91) is moved to the downstream side above the endless track (91). Extruding means (13) for extruding is provided.
The push-out means (13) is composed of a rod (13b) having one end connected to a fulcrum (13a) and the other end bent into an L shape. When the fulcrum (13a) is rotated by a driving means such as a motor, the rod (13b) is rotated as indicated by an arrow, and the other end is placed on the upper surface of the endless track (91). The roll-shaped food is pushed downstream by hitting.

  A sensor (not shown) for detecting the roll-shaped food on the endless track (91) is disposed above the downstream side of the endless track (91), and the winding mechanism (6) and the pushing means (13). Is appropriately driven based on the detection signal of this sensor.

Hereinafter, the operation of the roll food packaging apparatus according to the present invention (roll food packaging method) will be described.
First, the seal label (74) is adhered to the film (7) in the label adhesion part (1), and the film (see FIG. 4) to which the seal label is adhered is overlapped and stocked in the film stock part (2).
The film (7) stocked in the film stock section (2) is sucked down and taken out one by one by the film supply mechanism (3) and supplied onto the belt conveyor (41) of the transport mechanism (4). Is done.

The film (7) is conveyed to the downstream side (termination side) by the belt conveyor (41), and the roll-shaped food prepared in the placing portion (5) on the film in the middle of conveyance (the roll shape in which nori is not wound) Sushi rice) is placed (see FIG. 5).
The film on which the roll food is placed is further conveyed to the downstream side (terminal side) by the belt conveyor (41), and the protruding piece (72) of the film (7) is placed on the upper side of the rising member (42). The protrusion piece (72) is supplied to the upper surface of the endless track (91) in a state where the protrusion piece (72) is raised substantially at a right angle.

7 and 15 are views showing this state, and FIG. 7B is an enlarged view of the main part of FIG. Note that the roll-shaped food placed on the film is omitted in FIG. 7A and is hidden by the pressing roller 86 in FIG.
When the cylinder (88) is shortened from this state, the lower ends of the pair of left and right arms (81) are moved inward (directions approaching each other), and accordingly, the pair of left and right movable pieces (84) and the claws are moved. The member (85) moves inward (advances). Then, since the projection (851) of the claw member (85) is caught in the groove (861) of the pressure roller (86), the pressure roller (86) moves (advances) inward integrally with the claw member (85). .

FIG. 8 is an enlarged view of a main part showing this state, (b) is a partial sectional view of (a), and (c) is a plan view of a lower part of (a). FIG. 9 is an explanatory diagram showing a process from the state shown in FIG. 7 to the state shown in FIG.
In the state of FIG. 7, the protruding piece (72) rises substantially perpendicularly along the end face of the roll-shaped food (R) (see FIGS. 7 (b) and 9 (a)). When the lower ends of the pair of left and right arms (81) are moved inward from this state, the side portions of the protruding pieces (72) are first folded along the peripheral surface of the roll-shaped food (R) (FIG. 9 ( b)). In FIG. 9, only the right front arm (81a) of the four arms is drawn for the sake of clarity, but in reality, the front and rear sides of the left and right ends of the roll-shaped food are used by the four arms. On the side, the projecting piece (72) is folded back.
Next, the left and right end surfaces of the roll-shaped food (R) are pressed by the pair of left and right pressing rollers (86), and the pair of left and right claw members (85) project inward from the front end surface of the pressing roller (86). The protruding piece (72) is folded back toward the upper side of the roll-shaped food (R) (see FIGS. 9 (c) and 8). In FIG. 9C, the pressing roller is omitted.
Thus, after the side part of the protruding piece (72) is folded back by the pair of left and right arms (81) and pressed before and after the roll-shaped food (R), the protruding piece ( When the upper portion of 72) is folded back, both ends of the roll-shaped food (R) can be reliably covered with the protruding pieces (72).

  After both ends of the roll-shaped food (R) are covered with the projecting pieces (72), the rod of the second cylinder (87) is extended and the pressure roller (86) and the claw member (85) are lowered, and the pressure roller (86) pushes down the upper surface of the endless track (91) (see FIGS. 10 and 16).

When the pressing roller (86) is lowered, the pin-shaped stopper (89) comes into contact with the rear end surface thereof, whereby the pressing roller (86) is fixed at the forward movement position to prevent the backward movement (see FIG. 10).
Then, by extending the cylinder (88) with the pressing roller (86) fixed at the forward position, the claw member is brought into contact with both end faces of the roll-shaped food (R). Only (85) is moved (retracted) outward (see FIG. 11).

Subsequently, with the claw member (85) moved outward (retracted), the cylinder (95) is extended to move the roller (93) from the downstream side to the upstream side (from the right side in the figure) around the fulcrum (94). It is turned toward the left side and positioned above the roll food (R) (see FIG. 17).
As a result, the endless track (91) is wound around the peripheral surface of the roll food (R).
As a result, the film body (71) is wound around the peripheral surface of the roll-shaped food (R) in which both ends are covered with the protrusions (72), and the seal label (74) is further pressed and the film body ( 71) is sealed (see FIG. 19).

Thereafter, the cylinder (95) is shortened and the roller (93) is rotated in the reverse direction to return the roller (93) to the original position, and the rod of the second cylinder (87) is further shortened to press the roller. (86) is raised. Thereby, the roll-shaped foodstuff (R) of the state packaged in the film (7) raises to the original position (position at the time of supply).
When the pressing roller (86) rises, the pin-shaped stopper (89) that has been in contact with the rear end surface of the pressing roller (86) is released, so that the pressing roller (86) is moved outward by the biasing force of the spring (862). And return to the position of FIG. Thereby, it will be in the state by which the both ends of the roll-shaped foodstuff (R) are not pressed down by the press roller (86).

In this state, the roll food (R) placed on the upper surface of the endless track (91) is moved downstream by driving the pushing means (13) and pushing the roll food (R) by the rod (13b). And rolled out (see FIG. 18).
The extruded roll food (R) is discharged from the discharge slope (14) to the outside of the apparatus and delivered as a product to a convenience store or the like.

  Rolled foods (rolled sushi, etc.) packaged by the above method have been reliably rolled up under the film body covering the peripheral surface of the roll-shaped food, with the rising pieces covering both end faces of the roll-shaped food. Since it will be in a state (refer FIG. 19), it will have a very high sealing performance.

  INDUSTRIAL APPLICABILITY The present invention is used as an apparatus for hermetically packaging roll foods, particularly rolled sushi, with a synthetic resin film.

4 Conveying mechanism 42 Rising member 6 Winding mechanism 7 Film 71 Film body 72 Projecting piece 8 Covering means 81 Arm 81a Front arm 81b Rear arm 85 Claw member 851 Protrusion 86 Pressing roller 861 Groove 862 Spring 87 Second cylinder 88 Cylinder 89 Stopper 9 Winding means 91 Endless track 92 Weight member 13 Extruding means R Rolled food

Claims (14)

An apparatus for packaging roll food such as sushi rolls with a film,
The film is a film having a rectangular film body and projecting pieces respectively projecting from two opposing sides of the film body,
A transport mechanism for transporting the roll-shaped food on the surface of the film, and a winding mechanism for winding the periphery of the roll-shaped food that has been transported by the transport mechanism with a film;
The transport mechanism has a rising member that raises the protruding piece of the film at a substantially right angle,
The winding mechanism includes a coating means for covering the both ends of the roll-shaped food with the protruding pieces raised at a substantially right angle, and the periphery of the roll-shaped food with the both ends coated by the coating means. A roll-shaped food packaging apparatus comprising winding means for winding the film body. The covering means includes a pair of left and right arms that reciprocate in the length direction of the roll food,
Each of the pair of left and right arms includes a front arm disposed in the vicinity of the front side of the roll food and a rear arm disposed in the vicinity of the rear side, and the front arm and the rear arm reciprocate integrally. The rolled food packaging apparatus according to claim 1. The covering means includes a pair of left and right pressing rollers that reciprocate in the length direction of the roll food,
Each of the pair of left and right pressing rollers is disposed such that the axial direction thereof coincides with the length direction of the roll-shaped food, and the front end surface presses the end surface of the roll-shaped food when moving forward. The roll-shaped food packaging apparatus according to claim 1 or 2, characterized in that: The covering means includes a pair of left and right claw members that reciprocate in the length direction of the roll food,
The pair of left and right claw members are formed in a substantially semi-cylindrical shape along the outer peripheral surface of the pressure roller, and the front end portions of the pressure roller cover the upper surface of the pressure roller and move forward. 4. The roll-shaped food packaging apparatus according to claim 3, wherein the roll-shaped food packaging apparatus is disposed so as to protrude from the front end surface. A protrusion is formed on the lower surface of the claw member,
A circumferential groove wider than the width of the protrusion is formed on the outer peripheral surface of the pressing roller,
The roll-shaped food packaging apparatus according to claim 4, wherein when the protrusion moves within the groove width, the tip portion of the claw member protrudes and protrudes from the tip surface of the pressing roller.   6. The roll-shaped food packaging apparatus according to claim 5, wherein the claw member moves integrally with the pressing roller when the protrusion is engaged with the groove of the pressing roller during advancement. The pressing roller is biased by a spring in a direction away from the end face of the roll-shaped food,
The roll food packaging apparatus according to claim 6, wherein the claw member moves the pressing roller against an urging force of the spring when moving forward.   The roll shape according to any one of claims 3 to 7, wherein the pair of left and right arms and the pair of left and right pressure rollers reciprocate in the length direction of the roll food by driving a single cylinder. Food packaging equipment. The winding means includes an endless track that is wound around a plurality of rollers such that the upper surface is flat.
9. The rolled food product conveyed by the conveying mechanism is supplied to the upper surface of the endless track so that the axial direction thereof is parallel to the width direction of the endless track. The roll-shaped food packaging apparatus described in 1.   The roll-shaped food packaging apparatus according to claim 9, further comprising a weight member disposed below the inner surface of the endless track to apply tension to the endless track. A second cylinder for integrally raising and lowering the pressing roller and the claw member;
The pressing roller pushes down the upper surface of the endless track when descending,
The winding means winds the film body around the roll food by winding the endless track around the roll food when the upper surface of the endless track is pushed down. The roll-shaped food packaging apparatus according to claim 9 or 10, characterized in that: When the pressure roller is lowered, it has a stopper for preventing the backward movement by fixing the pressure roller at the forward position,
The roll-shaped food packaging apparatus according to claim 11, wherein the stopper prevents the pressing roller from moving backward when the claw member is retracted.   The roll according to any one of claims 9 to 12, further comprising an extruding means for extruding the roll-shaped food placed on the upper surface of the endless track to the downstream side after the film is wound by the winding mechanism. Food packaging equipment.   The roll-shaped food packaging apparatus according to claim 1, wherein the roll-shaped food is rolled sushi.

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