JPH09226024A - Tray molding machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To bond simply and easily sides adjoining each other by tongues by providing a male mold having the shape corresponding to an inner space of a tray, a first female mold for standing a first side, a second female mold for standing a second side and folding its tongue and a means for pressing the tongue and bonding adjoining sides by using the tongue. SOLUTION: Male mold molding bodies 121, 121 are provided with the shape corresponding to an inner space of a tray and tray storage sections 151 for storing the tray pushed up by the male molding bodies 121, 121 from below are formed on a pair of frame components 151, 151, left and right, of the first male molding bodies 131, 131. Second female mold molding bodies 132, 132 are provided with inclined face sections 132b extending to the front and rear in continuation to corner molding sections 132a, 132a and standing second side sections, left and right. Press rollers 142a and 142b are brought into contact rotatably with the end faces, front and rear, on the lifting position of the female molding bodies 121. When tongues provided continuously to the second sections are folded to the first side sections, front and rear, connecting sections are folded simultaneously on the outer side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tray-molding machine for packaging articles, and more particularly to a tray-molding machine that bends the periphery of a paper material to form an upward opening.

[0002]

2. Description of the Related Art Food such as meat, fish and vegetables to be shipped to supermarkets is usually placed on a tray made of Styrofoam and the like, and each tray is usually packaged in a transparent film. A large number of trays will be prepared at the packaging site. In this case, as this tray is formed in a predetermined shape in advance, it becomes extremely bulky even in a stacked state, so that a large storage space is required and the transfer becomes large. is there.

In response to this, in recent years, it has been considered to form a tray from a paper material at the packaging site and supply it to the packaging device, and according to this, storage and transportation of a flat material can be performed. It can be carried out in a state where the storage space is small, or the transportation is facilitated.

A device for molding a tray from such a paper material is, for example, Japanese Patent Publication No. 6-134867.
Is disclosed in Japanese Patent Application Laid-Open Publication No. HEI 9-203 (1995).

The device disclosed in this publication includes a female member provided above a positioned flat paper material,
A male member that is provided below and can move up and down with respect to the female member, and has a shape corresponding to the internal space of the tray to be molded, and a presser body that presses and bends the tongue piece for bonding the material. And a raising and lowering means for raising and lowering the male member.

Then, the male member is raised by the elevating means, and first, of the four peripheral side portions of the material, two first parallel to each other having tongue pieces at both ends thereof.
The tongue pieces on the sides are folded inward, and then the male member is thrust into the female member to simultaneously erect both the first side portions and the other two second side portions parallel to each other. At the same time, the tongue pieces are configured to adhere along the inner surfaces of both ends of the second side portion.

By the way, in the tray formed by the apparatus disclosed in the above publication, the tongue pieces are formed so as to project at the four corners of the inner surface of the tray for containing the food, and therefore the tray contains the food. In this case, food may get caught on the tongue and its shape may be lost.When removing food from the tray, some of the food may remain attached to the tongue and There is a problem that the food cannot be taken out easily. In addition, when the tongue piece is adhered to the inner surface of the second side portion, if a part of the adhesive sticks out to the outer peripheral edge of the tongue piece, the adhesive may contact a part of the food. There was also.

To solve such a problem, it is conceivable to bend and bond the tongue pieces provided on the first side portion along the outer surfaces of both ends of the second side portion.

[0009]

However, if the molding machine is specifically designed, the four tongue portions of the material are erected and the tongue piece portion provided on the first side portion is set to the second side portion.
It is not easy to think whether or not it is possible to bend and adhere along the outer surfaces of both ends of the side portion. Also, the tongue portion is bent and adhered along the outer surface of both ends of the second side portion. In such a case, the elastic restoring force of the tongue piece may act in the direction away from the outer surface of the second side portion, so that the tongue piece may be easily peeled off from the outer surface of the second side portion. Therefore, the tray having such a structure is not adopted at present.

Therefore, the present invention is a tray forming machine for bending a peripheral portion of a planar paper material to form a tray, while forming the adhesive tongue portion so as to be located on the outer surface side of the tray. Moreover, it is an object of the present invention to make it possible to easily and easily adhere the adjacent side portions to each other by the tongue piece portion during the molding.

[0011]

Means for Solving the Problems To solve the above problems, the present invention is characterized by using the following means.

First, the invention according to claim 1 of the present application (hereinafter referred to as the invention)
The first invention) is the circumference 4 of a flat paper material.
One side part is erected, and both side parts of two first side parts parallel to each other of these side parts are opposite to both end parts of other two parallel second side parts orthogonal to these first side parts. In a tray forming machine for forming an upward-opening tray for article packaging by adhering a pair of adhering tongue pieces connected to each other, a female mold located on one side with a material supplied at a predetermined position interposed therebetween. A member, a male member located on the other side, and a moving means for moving one of these two mold members with respect to the other, the male member having a shape corresponding to the internal space of the tray, A first female molded body that abuts the female member on the first side portion to erect both side portions, and erects the second side portion after the erecting operation of these first side portions is delayed. Bend the tongue portion of the second side portion of the first side portion along the outer surface of both ends of the first side portion. Constituted by a second female-shaped product having over Na molding unit, and, in the female member, characterized in that a pressing means for pressing the tongues bent in the male member.

The invention according to claim 2 (hereinafter referred to as the second invention) is, in the above-mentioned first invention, the pressing means comprises a support shaft orthogonal to the moving direction of the male member or the female member by the moving means. It is characterized by comprising a pressing roller rotatably supported via a roller and a spring member for urging the roller inwardly of a moving path through which the bent tongue portion passes.

On the other hand, the invention according to claim 3 (hereinafter referred to as the third invention) is, in the above-mentioned first invention, a female member is fixedly provided above the material and a male member is provided so as to be able to move up and down. Above the female mold member, there is provided a tray housing part having an outlet in the upper part and in which the molded tray is housed by being sequentially pushed up from below by the male mold member to be housed.

Further, the invention according to claim 4 (hereinafter referred to as the fourth invention) is the same as the third invention, but when the trays are stacked in the tray storage portion to a certain height, the detection is performed. It is characterized in that a detector is provided.

Furthermore, the invention according to claim 5 (hereinafter referred to as the fifth
In the above-mentioned third invention, the invention is characterized in that a lifting means for lifting the tray stored in the tray storage portion up to the vicinity of the take-out port of the tray storage portion is provided below the material. And

By using such means, the following effects can be obtained according to the inventions of the present application.

First, according to the first to fourth aspects of the invention, when molding is performed by the male mold member and the female mold member, the material is the first female mold body in which the two first side portions parallel to each other are the female mold members. Is bent so that it abuts against each other and stands upright, and after that, two other parallel second side portions and tongue pieces connected to both end portions of the other second side portions form a corner forming portion of the female member. Have second
It is bent so as to abut against the female molded body so that the second side thereof stands up, and the tongue piece is guided along the inner surface of the corner molded portion while being folded along the outer surfaces of both ends of the first side portion. Will be done. Then, the bent tongue portion is pressed to the male member side by the pressing means provided on the female member side and adhered to the outer surface of the first side portion. As a result, the tray is formed with the tongue piece portion positioned on the outer surface of the first side portion.

According to the second aspect of the present invention, the tongue in which the pressing roller rotatably supported by the spring member is rotatably supported via the support shaft orthogonal to the moving direction of the male member or the female member by the moving means. When the male member and the female member are molded, since they are urged toward the inner side of the moving path through which one piece passes,
The bent tongue portion is moved to a position in contact with the pressing roller while rotating the roller, and at the contact position, the tongue portion is elastically pressed toward the male member side by the pressing roller, The outer surfaces of both ends of the first side portion are reliably bonded.

According to the third invention, the female member is fixedly provided above the material, the male member is provided so as to be able to move up and down, and the outlet is provided above the female member in the upper portion. Since the tray containing portion having the tray is provided, the trays formed by the male member rushing into the female member are sequentially stacked and held from below with the pushing operation of the male member. Become.

Further, according to the fourth aspect of the invention, since the tray accommodating portion is provided with the detector for detecting the tray when the trays are stacked up to a certain height, the detection signal by the detector is provided. Based on the above, for example, the molding operation is stopped immediately, or when the tray is molded a predetermined number of times thereafter, the molding operation is stopped, and further,
It is possible to give an alarm from the alarm device that the tray storage is full.

Further, according to the fifth aspect of the invention, when the tray is taken out from the tray accommodating portion, the push-up means provided below the positioned paper material is raised to move the tray from the molding end position to above the tray accommodating portion. It is possible to push the tray up to the tray take-out position, which makes it possible to take out the tray from the tray storage section easily and quickly.

[0023]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below.

As shown in FIGS. 1 and 2, a tray molding machine 1 according to this embodiment has a material supply section 3 at one end of the upper surface of a gantry 2, a preforming section 4 at the center, and the other end. With the main molding parts 5 arranged on the respective sides, the materials stacked and stored in the material supply part 2 are taken out one by one and sequentially transferred to the preforming part 4 and the main molding part 5. A flat paper material is formed into a tray having a predetermined shape.

Here, the shapes of the material A, the preformed intermediate product B, and the tray C as the final product will be described with reference to FIGS.

First, as shown in FIG. 3, a material A is a water-repellent thick paper punched into a predetermined shape, and is provided along the bottom portion A1 which is the bottom of the tray and the front and rear edges thereof. Front and rear first side parts A2 and A2 which become the front and rear walls of the tray
And left and right second side portions A3 and A3 which are provided along the left and right edges of the bottom portion A1 and serve as the left and right walls of the tray, and the left and right second side portions A3 and A3 are both , Is composed of an outer second outer side portion A3 'and an inner second inner side portion A3 ". Further, front and rear ends of the second outer side portions A3', A3 'are Front and back first side A
2, tongue pieces A4 ... A4 for adhering to the left and right ends of the A2 are provided respectively, and the second inner side portions A3 ″,
Between the front and rear end portions of A3 ″ and the left and right end portions of the front and rear first side portions A2 and A2, a gap is not formed in a portion where the front and rear walls of the tray are orthogonal to the left and right walls. Contact A
5 ... A5 are provided respectively. In addition, this material A
In advance, a polygonal line for forming each of the above parts is provided.

Further, as shown in FIG. 4, the intermediate product B is
This is a structure in which the second outer side portions A3 ', A3' of the left and right second side portions A3, A3 of the material A are folded and adhered to the second inner side portions A3 ", A3". The work is performed by the preforming unit 4 of the tray forming machine 1. In that case, in order to bond the second outer side portions A3 ′, A3 ′ and the second inner side portions A3 ″, A3 ″, a line is formed on the second inner side portions A3 ″, A3 ″ before preforming. The adhesive is applied in the shape of a circle (see symbol a in FIG. 3).

Then, as shown in FIG. 5, the tray C as the final product has the first side parts A2 and A2, which are in front of and behind the intermediate product B, and the second outer side part A as described above.
3 ', A3' and the second inner side portions A3 ", A3" are overlapped and adhered to each other, and the left and right second side portions A3, A3 are raised, and the left and right second side portions A3, A3 are A total of four tongue pieces A4 ... A4 provided at the front and rear ends of the second outer side portions A3 ', A3' are bent to form the front and rear first side portions A2, A2.
The left and right ends of each are bonded from the outside. And for the adhesion of the tongue pieces A4 ... A4,
Before the preforming, an adhesive is applied in a dot shape in advance to the left and right ends of the front and rear sides A2 ... A2 (see reference numeral b in FIG. 3).

On the other hand, as shown in FIGS. 1 and 2, a pair of left and right base members 10, 10 are arranged above the pedestal 2 in the tray molding machine 1 over the entire length of the pedestal 2. Material supply unit 3, preforming unit 4 and main forming unit 5
The main constituent members of the above are provided over the left and right base members 10, 10.

These base members 10, 10 are installed on the front and rear frame members 12, 12 of the pedestal 2 via rollers 11, ... The engaging member 13 provided on the lower surface of the portion ...
13 are engaged with rail members 15 and 15 provided on the frame members 14 and 14 in the middle of the pedestal 2, respectively, so that both base members 10 and 10 can slide left and right on the pedestal 2. Has been done.

Then, as shown in FIG. 6, screw holes 1 are respectively formed on the lower surfaces of the central portions of the left and right base members 10, 10.
The block members 16 and 16 provided with 6a and 16a are fixed, and one screw shaft 17 extending in the left-right direction is freely rotatable on the side frames 73 and 73 of the transfer mechanism 70 in the preforming unit 4 described later. The male screw portions 17a, 17a of the screw shaft 17 are screwed into the screw holes 16a, 16a of the block members 16, 16 respectively. In addition, a belt 21 is provided between the pulley 18 attached to the central portion of the screw shaft 17 and the pulley 20 attached to the rotating shaft of the motor 19 installed on the frame 2.
Is wound around the belt 21 by the rotation of the motor 19.
The screw shaft 17 is rotationally driven via the.

In this case, the male screw portion 17 of the screw shaft 17
a, 17a and screw holes 16 of the block members 16, 16
The directions of the screws at the respective screwing portions with a and 16a are opposite to each other, and therefore, the screw shaft 17 by the motor 19 is
With the rotation of, the base members 10 on both the left and right sides slide so as to approach or separate from each other.

Next, the structure of the material supply section 3 will be described.

As shown in FIGS. 7 and 8, the material supply section 3 includes a material supply hopper 30 for accommodating planar materials A ... A in a stacked state, and one material A from the hopper 30. It has a material take-out mechanism 40 for taking out and a conveyer 50 for carrying the material A taken out by the mechanism 40 to the front preforming section 4.

The material supply hopper 30 is made up of the bracket 3
It is composed of a pair of left and right side plates 32, 32 attached to the left and right base members 10, 10 via 1 ... 31, respectively. These side plates 32, 32 are the base members 1 described above.
It is attached to 0 and 10 in a rearwardly tilted posture, and locking members 33 and 33 projecting inward are provided at the lower part,
Further, inwardly bent portions 32a, 32a are provided at the rear portion, the left and right side portions of the stacked material A ... A are supported by the locking members 33, 33, and the rearward falling is bent by the bending. The materials A ... A are held between the side plates 32, 32 in a rearward and downward inclined posture by being blocked by the portions 32a, 32a.

Here, as shown in FIG. 7, the locking members 33, 33 have their upper portions joined to the mounting plates 34, 34 fixed to the outer surface side of the side plates 32, 32, and the lower portions thereof. , 32 are formed so as to project inwardly from the openings 32b, 32b.

At the front of the material supply hopper 30, as shown in FIGS. 7 and 8, a plurality of materials attached to a fixed frame 35 on the pedestal 2 via brackets 36, 36 are prevented. First and second contact members 37, 38 for use
Is provided. The lower end portions 37a, 38a of these contact members 37, 38 are bent rearward so that the first contact member 37
The lower end portion 37a of the lower part of the lowermost material A, whose left and right sides are held by the locking members 33, 33, is located slightly below the second part.
The lower end portions 38a of the abutting members 38 are located further below, respectively, and these lower end portions 37a, 38a are located at the front edge portion of the material A taken out downward from the state held by the locking members 33, 33. It is designed to contact one after another.

On the other hand, as shown in FIGS. 7 and 8, the material take-out mechanism 40 has an upper opening U-shaped bracket 41 whose rear end is fixed to the frame member 12 at the rear of the gantry 2.
An arm member 42 that is rotatably connected to and swings up and down.
43, a plurality of suction cups 43 ... 43 mounted side by side on the upper surface of the arm member 42, and a motor 45 for vertically swinging the arm member 42 via a crank mechanism 44, and the suction cups 43 ... 43. A vacuum pipe 48 guided from a vacuum pump 46 shown in FIG. 1 through an air filter 47 is connected to the suction pump 43.
The suction force acts on 43. Then, when the arm member 42 is swung upward by the motor 45, the suction cups 43 ... 43 project into the upper material supply hopper 30 from between the left and right base members 10, 10, and the hopper 3
It is adapted to be adsorbed to the lower surface of the material A located in the lowest layer within 0.

Further, the conveyor 50 includes the bracket 4 attached to the frame member 12 at the rear of the gantry 2.
A pair of left and right rear rollers 51, 51 supported by 1;
A pair of left and right front rollers 52, 52 (see FIG. 2) supported by the side frames 73, 73 of the transport mechanism 70 of the preforming unit 4 described later, and these rollers 51, 5
A pair of left and right ropes 5 wound between 1,52,52
3, 53, and these ropes 53, 5
43 is located between the top dead center position and the bottom dead center position of the suction cups 43 ... 43 of the material take-out mechanism 40, and the material A sucked by the suction cups 43 ... 43 at the top dead center position When the suction cups 43 ... 43 move downward, these ropes 53, 5
It is supposed to be handed over to 3.

The conveyor 50 is driven by the power supplied from the side of the preforming section 4 to the front rollers 52, 52.
Is driven, the ropes 53, 53 travel forward, and the material A received from the take-out mechanism 40 is supplied to the front preforming unit 4.

Here, the left and right side plates 32, 32 of the material supply hopper 30 are provided with a projector 55 and a light receiver 56 so as to face each other with the accommodated materials A ... A therebetween, and detection from the projector 55 is performed. The amount of the raw materials A ... A stored in the hopper 30 can be detected by the amount of light entering the light receiver 56.

Two adhesive nozzles 61 ... 61 are arranged on the left and right, respectively, as shown by the chain line in FIG. 2, above the transfer position of the material A from the material supply section 3 to the preforming section 4. At the same time, these nozzles 61 ... 61 are configured such that the adhesive in the adhesive tank 62 housed under the gantry 2 shown in FIG. 1 is supplied by a pump 63 through a pipe (not shown). When the material A is supplied to the preforming unit 4, an adhesive is applied as shown by reference characters a, a, b, b in FIG.

Next, the structure of the preforming section 4 will be described.

As shown in FIGS. 1 and 2, the preforming section 4
Is a conveyance mechanism 70 installed in the center of the gantry 2 and extending in the front-rear direction, and the left and right base members 1 on both the left and right sides of the front half thereof.
0 and 10, side bending mechanisms 90 are provided, and left and right sides of the rear half of the transport mechanism 70 are also provided with side pressure bonding mechanisms 100 provided on the left and right base members 10 and 10.

As shown in FIGS. 9 to 11, the transport mechanism 70 faces a plurality of lower rollers 71 ... 71 arranged at regular intervals in the front-rear direction and these lower rollers 71. A plurality of upper rollers 7 arranged in
2 ... 72. Of these, the lower roller 71 ...
71 is a frame member 14, 14 in the left-right direction on the pedestal 2.
A pulley 7 that is rotatably supported between a pair of left and right side frames 73, which is installed between the pulleys, and is attached to a rotation shaft of a motor 74 installed on the mount 2.
5, pulleys 76 ... 76 respectively attached to the shafts of the lower rollers 71 ... 71 except the rearmost lower roller 71 outside one side frame 73, and a plurality of guide pulleys attached to the side frame 73. 77 ... 7
7, a belt 78 is wound around, and a belt 79 is also wound between the lowermost roller 71 at the rearmost portion and the lower roller 71 in front of the lowermost roller 71, whereby the lower rollers 71 are rotated by the rotation of the motor 74. 71 are driven to rotate in a predetermined direction all at once.

Of the upper rollers 72 ... 72,
The plurality of rollers 72, ..., 72 located at the rear are rotatably mounted on the pair of left and right first side frames 81, 81, and the plurality of rollers 72, 72, located at the front are rotatably mounted on the pair of second side frames 82, 82, respectively. While being supported, the first and second support frames 83, 84 are disposed above the side frames 81, 81, 82, 82, respectively, and the first support frame 83 and the first side frame 81, 81, and the second support frame 84 and the second
The side frames 82 and 82 are connected via Roberval mechanisms 85 and 85, respectively.

The Roberval mechanism 85 includes a bracket 86 on the side frames 81, 81, 82, 82 side,
It is composed of a bracket 87 on the side of the support frames 83, 84 and two sets of leaf springs 88, 88 installed vertically in parallel between them, while holding the side frames 81, 81, 82, 82 in a horizontal posture. 71 is elastically supported so as to be vertically displaceable, so that the material A is always sandwiched between the lower rollers 71 ... 71 and the upper rollers 72 ... 72 with a uniform pressure. Roller 71
The material A is conveyed forward as the 71 rotates.

The first and second support frames 83,
When the locking members 89, 89 at one end are loosened, the 84 can be swung upward around the other end, and the side frames 81, 8 supporting the upper rollers 72, 72 at the time of inspection or the like.
1, 82, 82 can be flipped upward via the support frames 83, 84 and the Roberval mechanism 85, 85.

On the other hand, as shown in FIG. 10, the side folding mechanism 90 disposed on both the left and right sides of the front half of the transport mechanism 70 has a pair of left and right receiving members 91, 91 and a first folding member 92. , 92 and the second bending member 93,
93, and these are fixed symmetrically on the left and right base members 10, 10. Here, the second bending members 93, 93 located so as to enter the inside of the first bending members 92, 92 from above are fixed to the base members 10, 10 via brackets 94, 94, respectively.

Then, as indicated by the chain line, the transport mechanism 70
71 and the upper rollers 72 ... 72, the central portions are sandwiched between the lower rollers 71 ... 71, and the left and right second side portions A3 shown in FIG. A3
The second outer side portions A3 ', A3' of the second inner side portion A3 ",
Fold it so that it is stacked on top of A3 ″.

Further, as shown in FIGS. 2 and 11, the side pressure bonding mechanisms 100 arranged on both the left and right sides of the rear half of the transport mechanism 70 are mounted on the left and right base members 10, 10 via brackets 101, 101, respectively. A plurality of lower rollers 102, 102, 102 arranged at regular intervals in the front-back direction.
102 and these lower rollers 102 ... 102, 10
2 ... 102 and a plurality of upper rollers 103 ... 103, 103 ... 103 arranged so as to face each other. The brackets 104 that support the upper rollers 103 ... 103 and the brackets 105 that are fixed to the base member 10 on each of the left and right sides are a Roberval mechanism 85 that supports the upper rollers 72 ... 72 of the transport mechanism 70. They are connected via Roberval mechanisms 106, 106 using similar leaf springs.

As a result, the lower roller 7 of the transport mechanism 70 is
71 and the upper rollers 72 ... 72 and the second outer side portions A3 ', A of the left and right second side portions A3, A3 of the material A, which is conveyed forward with the central portion sandwiched therebetween.
3'and the second inner side portions A3 ", A3" are pressure-bonded to each other, and both side portions A3 ', A3', A3 "are bonded via an adhesive previously applied to the second inner side portions A3", A3 ". , A3 ″ are bonded together.

Then, the main molding part 5 which is the subject of the present invention
The configuration of will be described.

As shown in FIGS. 12 and 13, the main molding portion 5 is a pair of male molds supported by two left and right base members 10 and 10 via two guide rods 111 and 111, respectively, so as to be vertically movable. The male mold member 120 including the molded bodies 121 and 121, and the pair of left and right first female mold bodies 131 and 131, which are also supported by the left and right base members 10 and 10 via brackets 112 and 112, respectively. And a female mold member 130 including two female mold bodies 132, 132,
A pressing roll mechanism 140 having pressing rollers 142, ... 142, which are attached to the front and rear ends of the brackets 112, 112 via leaf springs 141, ... 141, respectively.

In addition, the pair of male moldings 121, 12
1, a pin 122 extending in the left-right direction is inserted, and the pin 122 and the motor 1 installed on the frame 2
23, a crank mechanism 150 is formed, and the rotation of the motor 123 causes the pair of left and right male molded bodies 121, 121 to move up and down via the crank mechanism 150 and the pin 122. And this male molded body 1
Reference numerals 21 and 121 have a shape corresponding to the internal space of the tray C, which is divided into two in the front-rear direction.

In addition, the left and right first female moldings 131, 13
1 is the bracket 1 as shown in FIG.
Side wall portions 131a, 131a connected and supported via the connecting plates 113, 113 at positions above 12, 112 and front and rear end portions thereof, that is, front and rear end portions of the male molded body 121 from above the center portion in the left-right direction. It has a pair of front and rear plate-shaped pressing portions 131b and 131b that are suspended. Between the pressing portions 131b and the side wall portion 131a, the cutout portions 131c and 13 that allow the pressing roller 142 to be inserted.
1c is formed.

The second female mold bodies 132, 132 are
As shown in FIG. 14, each of the corner forming portions 132 has a U-shape in a plan view, and the front and rear ends thereof are bent like a roof.
a, 132a and these corner forming parts 132a, 13a
2a continuously extending in the front-rear direction to the left and right second side portions A3,
A sloped surface portion 132b that erects A3, and this sloped surface portion 1
It has a shape having attachment portions 132c and 132c that are continuously provided on the lower portion of 32b.

Then, these second female molded bodies 132, 1
As shown in FIG. 13, the reference numeral 32 is arranged along a side portion of the male molded body 121 at a raised position via a space formed between the bracket 112 and the first female molded body 131. And is fixed to the outer surface of the bracket 112.

Further, the pressing rollers 142 ... 142
Is a large-diameter first pressing roller 1 located inside.
42a and a second pressing roller 142b located on the outer side, and these are arranged adjacent to each other on the same support shaft 145 so as to be in rolling contact with the front and rear end surfaces at the raised position of the male molded body 121. ing.

In that case, as shown in FIG. 12 and FIG.
The lower end of the leaf spring 141 is supported by the bracket 112 via the mounting member 143, and the upper end of the leaf spring 141 is provided with a support shaft 145 orthogonal to the vertical direction of the male molded body 121 via a support piece 144. The first pressing roller 142a and the second pressing roller 142b are rotatably supported on the support shaft 145. The first pressing roller 142a and the second pressing roller 142b are the same as the second female forming body 132.
A part of each of the rollers 142a, 142b is provided at a position above the first female forming body 131 via the notch 131c. Further, the large-diameter first pressing roller 142a is arranged on the inside and the small-diameter second pressing roller 142b is arranged on the outside, when the tongue piece A4 is bent to the front and rear first side A2 side. This is because, on the outer side, the connecting portion A5 is also bent at the same time so that the wall thickness becomes thicker than the inner side. Therefore, by using the pressing rollers 142a and 142b having different large and small diameters in this way, a uniform pressing force is given.

Further, planar U-shaped frame members 151 and 151 are continuously provided above the first female moldings 131 and 131, respectively, and a pair of left and right frame members 151 and 151 are provided.
Thus, a tray storage portion 152 is formed in which the tray C molded by the main molding portion 5 is sequentially pushed up from below by the male moldings 121, 121 to be stored.

Here, as shown in FIG. 13, when the trays C are stacked up to the upper position of the tray accommodating portion 152, the light is detected by the presence / absence of light reflection. A sensor 153 is provided, and when a full detection signal from the optical sensor 153 is output to a controller (not shown), the controller outputs a drive stop signal to each of the motors 45, 74, 123, and The driving of the motors 45, 74, 123 is automatically stopped. Then, the tray C is removed from the tray storage portion 152 by the operator, and the optical sensor 153 is moved to the tray C.
When the motor is no longer detected, each motor 45, 74, 12 is automatically
Although 3 is driven, the molding operation is restarted. In addition to the optical sensor 153, a detector such as a limit switch may be used as the detection unit of the tray C.

Further, the hopper 3 in the material supply section 3
The left and right side plates 32, 32 constituting the 0, and the left and right receiving members 91, 9 in the side part bending mechanism 90 of the preforming part 4
1, first bending member 92, 92, second bending member 9
3, 93, and the left and right lower rollers 102 ... 102, 102 ... 102, the upper rollers 103 ... 103, 103 ... 103 in the side pressure bonding mechanism 100, the left and right male molded bodies 121, 121 in the main molding unit 5, and the first. Female molded body 13
1, 131 and the second female molded bodies 132, 132, etc. are separately arranged on the left and right base members 10, 10, respectively, so that the screw shaft 17 is rotated by the motor 19 If the base members 10 and 10 are slid so as to be close to each other or separated from each other, the left and right members of the above members also come close to each other or separate from each other. Molding is possible.

Next, the operation of the tray molding machine 1 will be described.

First, when a large number of materials A ... A are stored in the material supply hopper 30 of the material supply unit 3 in a stacked state and the tray molding machine 1 is operated, the motor 45 in the material take-out mechanism 40 is operated. Is operated, the arm member 42 of the mechanism 40 is moved upward via the crank mechanism 44, and the vacuum pump 46 is also operated, so that suction force is applied to the suction cups 43 ... 43 attached to the arm member 42. Occurs and these suckers 43 ...
43 is adsorbed to the lower surface of the material A located in the lowermost layer in the hopper 30.

Then, when the arm member 42 is moved downward, the material A sucked by the suction cups 43 ... 43 is taken out downward from the inside of the hopper 30 and received on the left and right ropes 53, 53 of the conveyor 50. Passed. The conveyor 50 is supplied with power from the motor 74 of the transfer mechanism 70 in the preforming unit 4, and the ropes 53, 5 are supplied.
The material A is conveyed forward and supplied to the preforming unit 4 by driving 3 forward.

In the preforming unit 4, the central portion of the material A is the lower rollers 71 ... 71 and the upper roller 7 of the transport mechanism 70.
71, and is conveyed further forward by the rotation of the lower rollers 71 ... 71 by the motor 74, and in this conveying process, first, the adhesive discharged from the adhesive nozzles 61 ... As shown in FIG. 3, the left and right second
The second inner side portions A3 "and A3" of the side portions A3 and A3 and the left and right end portions of the front and rear first side portions A2 and A2 are linearly and dottedly applied respectively, and then the side bending mechanism 90 As a result, the second outer side portions A of the left and right second side portions A3, A3
3'and A3 'are bent.

Then, the bent second outer side portions A3 ', A3' are superposed on the second inner side portions A3 ", A3" by the side portion crimping mechanism 100, and the second inner side portions A3 ", A3", The second outer and second inner side portions A3 ′, A3 ′, A3 ″, A3 ″ are adhered by the adhesive applied to A3 ″, and the left and right second side portions A3, A3 as shown in FIG.
The intermediate product B is formed by stacking two sheets.

Further, this intermediate product B is carried in by the conveying mechanism 70 of the preforming section 4 above the pair of left and right male moldings 121, 121 in the main molding section 5 at the bottom dead center position. At the same time, as the male mold bodies 121, 121 are moved upward by the rotation of the motor 123, first, as shown in FIG. Female moldings 131, 131 total 4
The pressing portions 131b ... 131b at the locations are bent along the front and rear end surfaces of the male molded bodies 121, 121.

Next, as shown in FIG. 14, the left and right second inner and second outer side portions A3 ', A3 "are folded and overlapped.
132a and the inclined surface portions 132b ... 132b at the total of four positions of the second female molded bodies 132, 132 whose sides A3, A3 are male molded bodies 121, 121.
It can be bent along the side of the
A total of four tongue pieces A4 ... A4 at the front and rear ends of the side portions A3, A3 (second outer side portion 3A ') are bent, and then,
The bent tongue pieces are further raised by the male moldings 121, 121, and these tongue pieces A4 ... A4 are moved forward and backward by the pressing rollers 142 ... 142.
It will be adhered by the adhesive agent previously applied to both ends of the outer surface of A2.

In that case, the pressing rollers 142 ...
Since it is composed of a large-diameter first pressing roller 142a located on the inner side and a second pressing roller 142b located on the outer side, the folded tongue piece A4 is attached to both rollers 142a, 1a.
The rollers 42a, 142b can be smoothly moved to the pressing position by the rotation of the roller 42b.
Thus, a uniform pressing force can be applied to the entire tongue piece A4 portion having different thickness.

Further, the pressing rollers 142 ... 142 are rotatably supported on the outer surface side of the moving path through which the bent tongue piece A4 passes through a support shaft 145 orthogonal to the vertical direction of the male molded body 121. Therefore, for example, the male molded body 12
1 is moved to the top dead center by the crank mechanism, the bent tongue portion A4 causes the first and second pressing rollers 142 to move.
Set so that it is located at the pressing position by a, 142b,
In addition, by stopping the motor 123 at that position for several seconds, the tongue pieces A4 bent along the outer surfaces of both ends of the front and rear first side portions A2 and A2 are moved to the first and second sides.
It is possible to accurately move to the pressing position by the pressing rollers 142a and 142b and stop it. As a result, the tongue piece A4 can be reliably bonded to the front and rear first side portions A2 and A2, and the adhesives b and b applied to the left and right end portions of the front and rear side portions A2 ... It is possible to prevent the adhesive from being stretched and sticking out of the tongue piece A4.

In this way, the tray C as the final product as shown in FIG. 5 is completed, and it is pushed up from below into the tray storage section 152 provided above the main molding section 5 to be stacked. .

Therefore, the tongue piece A4 is provided on the inner surface side of the tray C.
Does not protrude and the food is caught in the tongue piece A4 when the food is stored in the tray C and loses its shape, or a part of the food adheres to the tongue piece A5 when the food is taken out from the tray C. It can be prevented from remaining as it is, and furthermore, when the tray C is formed, the sides of the tongue pieces A4 can be easily and reliably adhered by the pressing rollers 142a, 142b. it can.

In the above embodiment, the molding operation is stopped by the output signal of the optical sensor 153. However, in addition to this, for example, an alarm device (Fig. An alarm is issued from (not shown), and the tray storage unit 152 is activated by this alarm.
May be told that is full.

In this case, when the optical sensor 153 is provided at a high position near the outlet 152a of the tray accommodating portion 152, the molding operation is stopped immediately when the tray C reaches that position, or When the alarm is set to be issued, and when the tray C is provided at a relatively lower position, the molding operation is performed after the tray C reaches the position and a predetermined number of molding operations are performed. It may be stopped or an alarm may be issued. Here, when the tray C is removed from the tray storage portion 152 and the optical sensor 153 stops detecting the tray C, the molding operation is automatically restarted.

Further, without using the optical sensor 153, the number of cycles of continuous operation is set, and when the set number of times of continuous operation is continuously performed, the molding operation is automatically stopped or an alarm is issued. You may comprise. In that case, a restart switch (not shown) is provided.

Further, the crank mechanism 150 is used as the raising and lowering means for the male molded bodies 121, 121, and FIG.
As shown in FIG. 7, a reciprocating mechanism 160 including a rack 161, a pinion 162, and a motor 163 that drives the pinion 162 may be used.

In that case, the male molded body 1 may be used as required.
21 from the molding end position to the tray storage portion 152
The reciprocating mechanism 160 also serves as a pushing-up means for taking out the tray C stored in the tray storing portion 152, as a structure capable of ascending to the vicinity of the take-out port 152a.

As a result, when the tray C is taken out from the tray accommodating portion 152, the male mold bodies 121, 121 are further moved from the molding completion position to the tray accommodating portion 152 by the reciprocating mechanism 160 as shown by the phantom line in FIG. Exit 152
By raising the tray C near a and pushing up the tray C stored in the tray storage portion 152 near the outlet 152a, the tray C can be easily and easily taken out from the tray storage portion 152.

Incidentally, such a tray C pushing-up means may be provided in the above-mentioned embodiment using the crank mechanism 150. In that case, for example, apart from the crank mechanism 150, a large space is formed in a portion between the facing surfaces of the male forming bodies 121, 121 so as to vertically penetrate therethrough, and a male mold is formed through the space. A push-up mechanism (not shown) using a cylinder that moves up and down from the bottom dead center position of the body 121 to near the outlet 152a of the tray storage unit 152 may be provided on the gantry 2.

Further, in the above embodiment, the raw material A is preformed by the preforming portion 4, first the left and right first side portions A3, A3 are preformed to form the intermediate product B, and then the main forming portion 5 is formed. Although the first and second side parts A2, A2, A3, A3 of the intermediate product are upright formed, the material A is directly upright formed in the main forming part 5 without preforming. Of course, you can do that.

[0083]

As described above, according to the first to fourth inventions of the present application, at the time of molding by the male mold member and the female mold member, the material has two first side portions that are parallel to each other. In the second female part, the two second side parts that are parallel to each other and the tongue piece parts that are connected to both ends of the second second part part are bent so as to abut against the first female molded body in FIG. While contacting a second female mold body having a corner molding portion of the mold member, the second side portion is bent so as to stand, and the tongue portion is guided to the inner surface of the corner molding portion, the first portion is formed. The folded tongue portion is folded along the outer surfaces of both ends of the side portion, and the bent tongue portion is pressed to the male member side by the pressing means provided on the female member side, so that the first side member It will be reliably bonded to the outer surface. Therefore, the tray is molded with the tongue portion being located on the outer surface of the first side portion, the tongue portion does not protrude on the inner surface side of the molded tray, and food etc. It is possible to prevent the food from being caught by the tongue and losing its shape, or leaving a part of the food left on the tongue.

Further, according to the second invention, the pressing roller rotatably supported via the support shaft orthogonal to the moving direction of the male member or the female member by the moving means is bent by the spring member. Since the one part is biased inward of the moving path, the bent tongue part is formed by the male and female mold members until the pressing position of the pressing roller is reached. While being smoothly moved by the rotation, the pressing roller elastically presses the male member side at the pressing position and surely adheres to the outer surfaces of both ends of the first side portion.

According to the third aspect of the invention, the female member is provided above the positioned material, and the male member capable of moving up and down is provided, and above the female member, the outlet is provided at the upper portion. Since the tray storage section having is provided, in the storage section,
The trays formed by the male member rushing into the female member are sequentially stacked and stored from the lower side as the male member is pushed up.

Further, according to the fourth aspect of the invention, the tray accommodating portion is provided with the detector for detecting the tray when the tray is stacked up to a certain height. Based on the signal, for example, the molding operation may be stopped immediately, or the molding operation may be stopped when a predetermined number of trays are subsequently molded, and further,
It is possible to give an alarm from the alarm device that the tray storage is full.

Further, according to the fifth aspect of the invention, when the tray is taken out from the tray housing portion, the pushing-up means provided below the material is raised to move the tray from the molding completion position to the tray taking-out position above the tray housing portion. Therefore, the tray can be easily and quickly taken out from the tray storage section.

[Brief description of drawings]

FIG. 1 is an overall front view of a tray molding machine according to an embodiment of the present invention.

FIG. 2 is a partial transverse plan view of the tray molding machine.

FIG. 3 is a plan view of a material used in the tray molding machine.

FIG. 4 is a plan view of an intermediate product manufactured by the tray molding machine.

FIG. 5 is a perspective view of a tray formed by the tray forming machine.

6 is an enlarged cross-sectional view taken along the line AA of FIG.

FIG. 7 is an enlarged cross-sectional view of a material supply unit of the tray molding machine.

FIG. 8 is a view on arrow EE of FIG. 7.

FIG. 9 is a front view of a preforming unit of the tray forming machine.

FIG. 10 is an enlarged cross-sectional view taken along line W-W of FIG.

11 is an enlarged cross-sectional view taken along the line A-E of FIG.

FIG. 12 is a front view of a main molding unit of the tray molding machine.

13 is a cross-sectional view taken along the line O-O of FIG.

FIG. 14 is a perspective view of a second female member.

FIG. 15 is a partially omitted perspective view showing a bent state of the material by the first female member.

FIG. 16 is a partially omitted perspective view showing a pressure-bonded state of a material by a pressing roller.

FIG. 17 is a front view of a main molding portion according to another embodiment of the present invention.

[Explanation of symbols]

 1 Tray Molding Machine 120 Male Mold Member 121,121 Male Molded Body 130 Female Mold Member 131,131 First Female Molded Body 131b, 131b Pressing Part 132,132 Second Female Molded Body 132a, 132a Corner Molding Part 140 Pressing Roll mechanism 141 Leaf spring 142 Pressing roller 142a First pressing roller 142b Second pressing roller 150 Elevating means (crank mechanism) 152 Tray storage section 152a Ejection port 153 Detector 160 Pushing means (reciprocating mechanism) A Paper material A2, A2 First side A3, A3 Second side A4 Tongue C C tray

Front page continuation (72) Inventor Yukio Sasaki One share company at 959 Shimoda, Ritto-cho, Kurita-gun, Shiga Inside Ishida Shiga Works (72) Inventor Yoshio Iwasaki One-share company at 959, Shimo-cho, Ritto-cho, Kurita-gun, Shiga Ishida Shiga Works

Claims (5)

[Claims] 1. A four-sided peripheral portion of a flat paper material is erected, and two end portions of two first side portions which are parallel to each other among these side portions are orthogonal to these first side portions. A tray forming machine for forming an upward-opening article packaging tray by adhering a pair of adhering tongue pieces continuously provided on both ends of two parallel second side portions, A female member located on one side of the material supplied to the position, a male member located on the other side, and a moving means for moving one of these two mold members with respect to the other. The male member has a shape corresponding to the internal space of the tray, and the female member has a first female molded body that abuts on the first side portion and erects both side portions, and First
A second female having a corner forming part that erects the second side parts after the standing operation of the side parts and bends the tongue pieces of the second side parts along the outer surfaces of both ends of the first side parts. A tray molding machine, comprising: a mold forming body; and a pressing means for pressing the bent tongue portion against the male mold member on the female member side. 2. The pressing means includes a pressing roller rotatably supported via a support shaft orthogonal to the moving direction of the male member or the female member by the moving means, and a tongue portion formed by bending the roller. The tray forming machine according to claim 1, further comprising: a spring member that urges the moving path to pass inward. 3. A female member is fixedly provided above the material, a male member is provided so as to be able to move up and down below, and a take-out port is provided at an upper portion above the female member, and 2. The tray forming machine according to claim 1, further comprising a tray storage portion in which the formed tray is sequentially pushed up from below by a male member to be stored. 4. The tray molding machine according to claim 3, wherein the tray storage unit is provided with a detector that detects when the trays are stacked up to a certain height in the storage unit. . 5. A lifting means is provided below the material, which is capable of moving up and down to push up the tray stored in the tray storage portion from the molding end position to near the outlet of the tray storage portion. The tray forming machine according to item 3.