JPH0647818A - Box manufacturing device - Google Patents

Abstract

PURPOSE:To transfer respective forming dies and take out respective fusion bonding boxes quickly and securely and improve the quality by separating a plurality of box manufacturing section from discharge sections and connecting a plurality of forming dies so that respective sections are adjoining at corresponding intervals. CONSTITUTION:A box manufacturing device consists of box manufacturing sections 2, discharge sections 3 and a moving mechanism 6 in addition to a sheet stack mechanism 1 feeding sheets S of synthetic resin as main constituting sections. Fusion bonding boxes B of the box manufacturing sections 2 are assembled and formed from the sheets S by a plurality of movable forming dies 5 (a, b), and the sheets S are formed into the unfolded box shape by a hot blade 21, and the sheets S of unfolded box shape is pressed into the forming dies 5 by pressing mechanisms 24 and 26. Also the fusion bonding boxes 3 are taken out by extrusion mechanisms 31 (a, b) and 32 (a, b) of the discharge sections 3. The forming dies 5 are moved to the discharge sections 3 by the moving mechanism 6. The forming dies 5 are connected so as to adjoin one another at the interval corresponding to the box manufacturing sections 2 and the discharge sections.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a box-making apparatus for continuously manufacturing a fusion-bonded box by bending and raising the periphery of a synthetic resin sheet and heat-sealing it.

[0002]

2. Description of the Related Art Conventionally, as a box-making apparatus for a fusion-bonding box, for example, Japanese Patent Publication No. 57-30652 discloses a female die having an inclined surface and a presser for pushing a flat plate made of a thermoplastic resin into the female die. An apparatus has been proposed that includes a plate, a push-up base that pushes out a tilted box from a female mold, and an extruding pin that removes the tilted box pushed up by the push-up base.

In this apparatus, a sheet is pushed into a fixed taper-shaped die for bending and assembling, and at that position, the fusion box is pushed up to the upper surface of the die by a push-up base in the reverse direction of pushing the sheet. The fusion box is manufactured by discharging the fusion box with the extrusion pin. Also, JP-A-62-4018
No. 8 discloses a pressing plate for sucking and holding the expansion plate, a mold into which the expansion plate is pushed, a heating blade for melting the end portion of the side plate portion of the expansion plate, a supply of the expansion plate to the mold, and a container from the mold. There has been proposed a device including a cylinder mechanism for discharging.

In this apparatus, after pushing the expansion plate into the mold, the container is pulled up toward the upper surface of the mold by the vacuum of the pressing plate, and then it is horizontally moved and discharged by the air cylinder connected to the pressing plate. A fusion-bonding box is manufactured in which the end portions of the ruled side wall surface having no bent fusion groove are fused.

[0005]

However, in the device described in the former publication, since the fusion box is discharged by pushing it out from the side with the push pin, the discharge may not be performed reliably. It was In addition, when the extruded pin is discharged, the fusion box may be thermally deformed due to insufficient cooling. Further, in this apparatus, the next development plate can be supplied only after the fusion-bonding box is discharged from the female mold, and the box-making cycle cannot be accelerated.

Further, in the discharging method described in the latter publication,
When a heating blade such as a cross girder forming a bent V groove is provided, there is a drawback that the heating blade interferes with the discharge of the fusion box and the discharge cannot be performed properly. Therefore, an object of the present invention is that the box making cycle is fast, and the fusion box can be reliably discharged,
Moreover, it is an object of the present invention to provide a box making apparatus capable of obtaining a fusion box with excellent quality.

[0007]

In order to solve the above-mentioned problems, a box-making apparatus of the present invention comprises a plurality of molding dies capable of assembling and forming a fusion-bonding box from a synthetic resin sheet and being movable from an assembly position. , A hot-blade for forming a sheet in a box-expanding shape, a box-making section having a pushing mechanism for pushing the sheet in the box-expanding shape into the molding die, and the inside of the molding die at a position moved from the box-making section. A plurality of discharge parts having an extrusion mechanism for taking out the fusion-bonding box and a moving mechanism for moving the molding dies in the box making part to the discharge part are provided. It is characterized in that they are connected so as to be adjacent to each other at an interval corresponding to the section.

[0008]

According to the box making apparatus of the present invention having the above-mentioned structure, the synthetic resin sheet is formed in the box expanded shape by lowering the hot blade of the box making section. The sheet formed in the box-expanded shape is pushed into the molding die arranged below by the pushing mechanism. The sheet pressed into the molding die is bent at the peripheral edge of the sheet and is heat-sealed to form a fusion box. The molding die containing the fusion-bonding box is moved to the discharge section by the moving mechanism. At this time, since the plurality of molding dies are connected so as to be adjacent to each other at an interval corresponding to the box making section and the discharging section, the molding dies moved to the discharging section and the adjacent molding dies are At least one of them is moved to the box making unit. As a result, in the box making section,
Immediately thereafter, the next sheet can be continuously pushed into the molding die to perform box making. On the other hand, in the molding die moved to the discharge part, the fusion box is pushed out through the through hole of the molding die by the extrusion mechanism. As a result, since the discharge unit and the box-making unit are separated, the fusion-bonded box that has been made can be surely discharged without being disturbed by the hot blade or the like. In addition, the manufactured fusion-bonded box can sufficiently cool the heat-fusion-bonded portion during movement from the box-making unit to the discharge unit by the moving mechanism, and prevents deformation of the fusion-bonded box at the time of discharge. be able to.

[0009]

Embodiments of the present invention will be described below with reference to the accompanying drawings. FIG. 1 is a schematic side view of a box making apparatus according to an embodiment of the present invention. 2 and 3 are side views of the main parts of the sheet stacking mechanism 1 and the box making unit 2 in this box making apparatus. FIG. 6 shows a plan view of a hot blade used in this box making device. FIG. 7 shows a perspective view of the fusion box and the synthetic resin sheet.

The box making apparatus shown in FIG. 1 is viewed from the front, and has a sheet stacking mechanism 1 for supplying a synthetic resin sheet S and a fusion box B by erecting the peripheral edge of the sheet S. It is provided with a box-making section 2 to be formed and two discharging sections 3 for taking out the fusion-bonded box B that has been box-formed. This box making device
The sheet S shown in FIG. 7 (see FIG. 7B) is used to manufacture a fusion-bonding box having tapered side walls (see FIG. 7A).

As shown in FIGS. 2 and 3, the sheet stack mechanism 1 is attached to the rear of the central portion of the upper surface 41 of the main body. The sheet stacking mechanism 1 includes a cylindrical storage portion 11 that stacks the sheets S and stores the sheets S inside the cavity, and a kicker 12 that is attached to the rear surface of the storage portion 11 in contact with the upper surface 41 of the main body. Seat S stored in the storage unit 11
As shown in FIG. 7 (b), is precisely trimmed in advance to the external dimensions of the fusion-bonding box B, and the ears 8 at the four corners are cut out. As the sheet S, for example, a foamed or non-foamed sheet of polystyrene, polyethylene, polyvinyl chloride, styrene-maleic anhydride copolymer, or the like is used. The storage portion 11 is provided with a gap 11a in the front-rear direction in the lower part thereof so that the stacked sheets S can be delivered one by one from the bottom (see FIGS. 2 and 3). The kicker 12 is formed to have a thickness that allows the kicker 12 to enter the gap 11a of the storage portion 11, and is connected to a rod 12a of a cylinder that can move back and forth. The sheet S stored in the storage unit 11 is moved by moving the kicker 12 forward.
Are fed onto the sheet guide plate 25 in the front box making section 2. At this time, a stopper guide 29 is formed on the upper surface 41 of the main body so that the fed-out sheet S is accurately stopped on the sheet guide plate 25. The sheet guide plate 25 is attached flush with the upper surface 41 of the main body, and an opening corresponding to the outer dimensions of the fusion box B is provided at the center thereof.

The box-making unit 2 includes a heat blade 21 for forming the sheet S in the expanded shape of the fusion-bonding box B, molding dies 5a, 5b for raising the peripheral edge S2 of the sheet S, and molding dies 5a, 5b. It has an intermediate pressing plate 24 and a pressing plate 26 as a pressing mechanism for pressing the sheet S. As shown in FIG. 6, the hot blade 21 has a pressing blade 21a and a melting blade 21b assembled in a cross pattern, and a heating heater (not shown) is embedded in each of the blades. When the hot blade 21 is brought into contact with the sheet S, the pressing blade 21a forms a bent V groove 81 that allows the peripheral edge S2 of the sheet S to be bent.
The side wall end portion 82 of the fusion box B is melted by b,
The box-shaped sheet S shown in FIG. 7C is formed. That is, the sheet S includes a bottom surface B1 and a side wall B2 of the fusion-bonding box B.
Will be formed. The hot blade 21
The tip of may be coated with a silicone resin, a fluorine resin, or the like so that the sheet S is not adhered.
The upper part of the hot blade 21 is fixed to the lower part of the hot blade mounting plate 22, and the hot blade mounting plate 22 is vertically movable by a cylinder fixed to a top plate 28. Guide rods 23 are inserted through the four corners of the hot blade mounting plate 22 and are supported so as not to move laterally.

As for the molding dies 5a and 5b, two of the same shape are supported by a frame-shaped mold supporting frame 33 attached to the upper portion of the main body 4, one of which is below the hot blade 21 in FIG. And the other is positioned below the discharge stacking mechanism 31b in the discharge part 3 on the left side via the mold connecting rod 61. These molds 5
The a and 5b can reciprocate in the horizontal direction while sliding on the mold support frame 33, and the molding dies 5a and 5b.
b can be installed at a predetermined height. The molding dies 5a and 5b have through holes 5 corresponding to the bottom surface B1 of the fusion box B.
1 and has an inclined surface 52 having the same inclination angle as the side wall B2 of the fusion-bonding box B. As a result, the hot blade 21
By pushing the sheet S (see FIG. 7C) formed in the box-expanded shape into the molding dies 5a and 5b, the peripheral edge S2 of the sheet S in the box-expanded shape can be bent and raised. A moving mechanism 6 that reciprocates the molding dies 5a and 5b in the horizontal direction is attached to the mold connecting rod 61 that connects the molding dies 5a and 5b. The moving mechanism 6 has a servo motor and a crankshaft built therein. By alternately moving the molding dies 5a and 5b in the horizontal direction by the moving mechanism 6, the molding dies 5b containing the fusion-bonding box B are moved to the discharge part 3 and the discharge part 3 by the box making part 2. The other molding die 5a, which has already discharged the fusion-bonding box B, is made into the box-making unit 2
Can be moved to. Further, mold guides 34a and 34b are attached to both ends of the upper part of the mold support frame 33, respectively. These mold guides 34a, 3
Limit switches 35a, 3 are provided inside 4b, respectively.
5b is attached, and when the molding dies 5a and 5b are brought into contact with each other, the switch is turned on to stop the driving of the servomotor of the moving mechanism 6.

The pushing mechanism has an intermediate pushing plate 24 and a holding plate 26 for holding the sheet S fed onto the sheet guide plate 25 from above and below. The middle push plate 24 is inserted into an opening provided at the center of the hot blade mounting plate 22 and is moved up and down by a cylinder that can move forward and backward. The holding plate 26 includes the molding dies 51a,
The cylinder 71 attached to the support plate 7 is moved up and down so that it can be inserted through the through hole 51 of 51b. The pressing mechanism composed of the intermediate pressing plate 24 and the pressing plate 26 can press the box-shaped sheet S into the molding dies 5a and 5b.

In FIG. 1, the discharge parts 3 are formed on the upper surface 41 of the main body one on each of the left and right sides of the box-making part 2, and are pushed up as an extrusion mechanism for taking out the fusion-bonding box B from the molding dies 51a and 51b. It has plates 32a and 32b, and discharge stack mechanisms 31a and 31b for stocking the pushed fusion box B. The push-up plates 32a and 32b have the same structure as the press plate 24 in the box-making unit 2, and can be raised and lowered by cylinders 71a and 71b attached to the support plate 7. The push-up plates 32a and 32b are pushed up by coming into contact with the bottom surface B1 of the fusion-bonding box B from the through holes 51 of the molding dies 5a and 5b moved to the discharge unit 3 by the moving mechanism 6. As a result, the fusion-bonding box B contained in the molding dies 5a and 5b is removed. In addition, the discharge stack mechanism 31a, 3
1b is formed on the upper surface 41 of the main body at a position corresponding to the push-up plates 32a and 32b, and has a cylindrical shape having a cavity corresponding to the outer dimensions of the fusion box B. Claws 30 for supporting the side wall B2 of the fusion box B are formed in the lower inner walls of the discharge stack mechanisms 31a and 31b so as not to drop the fusion box B. The discharge stack mechanisms 31a and 31b are the push-up plate 3
The fusion-bonding boxes B pushed up by 2a and 32b are received from below and stored so that the fusion-bonding boxes B are stacked in multiple stages.

Next, the box making process of the fusion box B using the box making apparatus will be described with reference to FIGS. 2 to 5. As shown in FIG. 2, first, the kicker 12 of the sheet stack mechanism 1 is advanced to feed the sheets S stacked in the storage section 11 onto the sheet guide plate 25 of the box making section 2.
The fed-out sheet S is brought into contact with a stopper guide 29 formed on the sheet guide plate 25, and properly stopped at the box-making position. Then, as shown in FIG. 3, the sheet S fed to the sheet guide plate 25 advances the rods of the intermediate pressing plate 24 and the pressing plate 26, and is sandwiched from above and below by these. Then, the rod of the cylinder 27 connected to the hot blade mounting plate 22 is advanced to lower the hot blade 21,
The tip of the hot blade 21 is brought into contact with the sheet S. This allows
The sheet S has a peripheral edge S of the sheet S, as shown in FIG.
The bent V-groove 81 for bending and raising 2 is formed, and the side wall end portion 82 of the fusion-bonding box B is melted. Then, as shown in FIG. 4, while raising the hot blade 21,
While holding the sheet S between the pressing plate 4 and the holding plate 26, each cylinder is driven to push the sheet S into the molding die 5b. As a result, the peripheral edge S2 of the sheet S is bent and raised, and the peripheral edge S2 of the sheet S is heat-sealed B, so that the fusion-bonded box B is manufactured. In addition, in the molding die 5a arranged on the right side in FIG. 4, the fusion-bonding box B is removed by the push-up plate 32a, and the removed fusion-bonding box B is stored in the discharge stack mechanism 31a. Next, the middle push plate 24 is raised to the position shown in FIG. 2 to release the sandwiching of the sheet S, and the push up plate 32a in the discharging portion 3 on the right side in FIG. 4 is lowered to the lower part of the molding die 5a, The moving device 6 is driven to move the molding die 5b in the direction of the arrow X to the discharging portion 3 on the left side in FIG.
Move to. At this time, as shown in FIG. 5, the molding die 5a that was located in the discharging portion 3 on the right side in FIG. 4 is arranged in the box making portion 2, and the posture for pushing the next sheet S is taken. . Further, in the fusion-bonded box B that has been box-formed, the heat-fusion-bonded portion is naturally cooled while being moved from the box-making section 2 to the discharge section 3. Then, in the molding die 5b, when the cylinder 71b of the push-up plate 32b installed below for advancing the fusion box B is moved, the fusion box B is pushed up from the bottom surface B1 through the through hole 51 of the molding die 5b. And the upper discharge stack mechanism 31
inserted in b. The fusion bonding box B pushed up is attached to the claw 30 formed on the lower portion of the inner wall of the discharge stack mechanism 31b.
The tapered side wall B2 of the fusion container B is hooked and stored in the discharge stack mechanism 31b in a stacked state. As a result, the manufactured fusion-bonded boxes B are stored in the discharge stack mechanism 31b by stacking them in multiple stages without dropping. On the other hand, in the meantime, the molding die 5a moved from the discharging portion 3 on the right side in FIG.
As described for No. 3, the intermediate press plate 24 and the press plate 26
Thus, the sheet S is pushed into the molding die 5a.

As described above, according to this box-making apparatus, the box-making section and the discharge section are separated and two molding dies are provided. The box B can be manufactured continuously and quickly. Further, since the heat-sealed portion of the fusion-bonded box B that has been manufactured is naturally cooled while being moved from the box-making unit 2 to the discharge unit 3, the push-up plate 32
It is possible to obtain the fusion-bonding box B of excellent quality without deforming the fusion-bonding box B when discharged by a and 32b. Further, since the fusion-bonding box B is stored in the discharge stacking mechanism 31a, 31b of the discharging unit 3 in a state of being stacked in multiple stages, it can be easily handled for storage and transportation.

The box making apparatus of the present invention is not limited to the above embodiment, and for example, as shown in FIG.
May be the cylinder mechanism 61 connected to one of the molding dies 5b. The hot blade 21 is the sheet S
The ear portion 8 may also be cut. Further, the hot blade 21 and the molding dies 5a, 5b may be of a type capable of manufacturing a polygonal fusion box such as a pentagon, a hexagon, etc. In addition, within a range not changing the gist of the present invention. Various design changes can be made.

[0019]

As described above, the box making apparatus of the present invention is
The box-making section and the plurality of discharge sections are separated, and the plurality of molding dies are connected so as to be adjacent to each other at a distance corresponding to the box-making section and the discharge section. Thereby, when the molding die is moved from the box making section to the discharging section by the moving mechanism, at least one molding die is moved to the box making section and the box making section immediately performs the next box making. It is possible to accelerate the box making cycle. Further, since the fusion-bonding box is taken out from the molding die at the discharging section which is separated from the box-making section, it can be carried out quickly and surely without being disturbed by the hot blade or the like. Further, since the fusion-bonding box immediately after the box-making is sufficiently cooled during the movement from the box-making section to the discharging section, it is possible to prevent the fusion-bonding box from being deformed at the time of discharging.

Therefore, it is possible to obtain an apparatus which has a fast box-making cycle, can discharge the fusion-bonding box promptly and surely, and is capable of producing a fusion-bonding box of excellent quality without being deformed at the time of discharging.

[Brief description of drawings]

FIG. 1 is a side view showing a box manufacturing apparatus according to an embodiment of the present invention.

FIG. 2 is a side view showing a state in which a sheet is fed from a sheet stack mechanism in the box making apparatus of FIG. 1 to a box making section.

FIG. 3 is a side view showing a state where a hot blade is in contact with a sheet in a box making unit in the box making apparatus of FIG.

FIG. 4 is a side view showing a state in which the sheet is pushed into the molding die by the box making unit in the box making apparatus of FIG. 1.

5 is a side view showing a state in which the molding die of the box making part of the box making device of FIG. 1 has been moved to a discharge part. FIG.

FIG. 6 is a plan view showing a hot blade used in the box manufacturing apparatus of FIG.

7 is a perspective view showing a fusion-bonding box manufactured by the box-making apparatus of FIG. 1 and a synthetic resin sheet used in the apparatus.

8 is a side view showing a modified example of the moving mechanism in the box manufacturing apparatus of FIG.

[Explanation of symbols]

 B Fusion-bonding box S Synthetic resin sheet 2 Box-making part 21 Hot blade 24 Medium press plate 26 Holding plate 27 Cylinder 3 Discharging part 31a, 31b Discharging stack mechanism 32a, 32b Extruding plate 5a, 5b Molding die 6 Moving mechanism 71, 71a, 71b cylinders

Claims (1)

[Claims] 1. A plurality of molding dies capable of assembling and forming a fusion-bonded box from a synthetic resin sheet and being movable from an assembly position, a hot blade for forming the sheet in a box-expanded shape, and a sheet in a box-expanded shape. In the box making section, a box making section having a pushing mechanism for pushing into the mold, a plurality of discharging sections having an extruding mechanism for taking out the fusion box in the molding die at a position moved from the box making section, And a moving mechanism for moving the molding die to the discharge portion, wherein the plurality of molding dies are connected so as to be adjacent to each other at an interval corresponding to the box making portion and the discharge portion. Box making device.