JPH0362540B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to an assembly container manufacturing apparatus.

Conventionally, in manufacturing synthetic resin containers such as those found in food containers, a heating blade is used to create a box expansion plate from an original plate, and then the box expansion plate is pushed into a mold below the heating blade using a press plate. A so-called assembling molding method is known in which the side plates of the box expansion plate are raised up, and the ends of the side plates are fused together to assemble into a box shape to obtain a container.

In this assembly molding, it is necessary to change the size of the heating blade and mold according to the size of the container to be manufactured. Therefore, in order to avoid having to replace the heating blade and mold each time, the dimensions of the heating blade and mold must be changed. A device that can be adjusted arbitrarily has been proposed. However, this conventional device has the disadvantage that it is difficult to perform accurate dimensional adjustment, and it cannot be used satisfactorily for practical use.

The present invention has been made in view of the above-mentioned points, and an object of the present invention is to provide an assembly container manufacturing apparatus that can easily and accurately adjust the circumferential dimensions of a heating blade and a mold.

That is, the present invention has a bending groove forming blade and a fusing blade, which are assembled in the shape of a grid, and is provided with a heating blade that can be raised and lowered freely, and a heating blade that is provided below the heating blade and is obtained by the action of the heating blade. A mold comprising an internal cavity into which the box expansion plate is pushed in order to make the side plates of the box expansion plate rise above the bottom plate, and a press that is movable up and down and used to push the box expansion plate into the inner cavity of the mold. In the apparatus for manufacturing an assembly container comprising a plate, the opposing heating blade structures constituting the heating blade are supported by a heating blade spacing adjustment mechanism so as to be able to approach or move away from each other at the same time,
The mold constituent frames that make up the above mold face each other,
The object of the present invention is to provide an apparatus for manufacturing an assembled container, which is supported by a mold interval adjustment mechanism so as to be able to approach or separate at the same time, and is configured to be able to adjust the four circumferential dimensions of a heating blade and a mold.

Embodiments of the present invention will be described below with reference to the drawings.

In FIG. 1, reference numeral 1 denotes a heating blade provided above within a base frame 2, and the heating blade 1 is fixed to a support frame 4 that is moved up and down by an air cylinder 3. Reference numeral 5 denotes a guide rod that guides the support frame 4 when it moves up and down.

As shown in Fig. 2, the heating blade is made up of four heating blade structures 6, 7, 8, and 9 with built-in heaters arranged in a cross-shaped configuration, and includes an encircling bending groove forming blade 10 and an L-shaped blade. The fusing blade 11 has a blade part 3.
The first
As shown in FIG. 0, by attaching the cutting blade 11' to the protrusion 33' of the blade part 33, it is possible to create a structure in which the cutting blade 11' protrudes below the bending groove forming blade 10. The blade portion 34 may be formed in advance to protrude below the bending groove forming blade 10, or the protruding portion 3
A cutting blade 11' may be attached in the same manner as 3'. With this structure, a box development plate as shown in FIG. 8 can be obtained by fusing the four corners of the original plate.

An air cylinder (not shown) (usually arranged in parallel with the air cylinder 3) is connected to an arm 12 that extends downward through the approximately central space of the heating blades 1 arranged in a cross-shaped configuration. A press plate 13 is fixed to the press plate 13, and the press plate 13 is configured to be movable up and down by an air cylinder.

A mold 14 is provided below the heating blade 1 for raising the side plates of the box expansion plate to form a container, and the mold 14 is placed and fixed on a mold mounting frame 15.
As shown in FIG. 5, the mold 14 has four mold constituent frames 1.
6, 17, 18, and 19, and the box expansion plate pushed into the inner cavity 20 of the mold 14 rises upward when its side plate comes into contact with the mold component frames 16, 17, 18, and 19. It's getting old.

The mold mounting frame 15 has an opening 21 corresponding to the inner cavity 20 of the mold, so that the container 22 formed in the mold 14 falls through the opening 21 to the lower part of the mold mounting frame. It's summery. Note that the mold 14 may be directly attached to the base frame 2 without providing the mold mounting frame 15.

A large number of original plates 23 are stacked in an original plate stacking frame 24, and are sent out to the upper surface of the mold 14 by an ejecting plate 25 in order from the lowest layer.

The ejecting plate 25 is fixed to the tip of an arm 26 connected to an air cylinder (not shown), and moves forward and backward in the horizontal direction.
The original plate is sent out in the direction of arrow a (FIG. 1) by coming into contact with the end of the plate. Note that the original plate supply mechanism is not limited to this, and other known supply means are possible.

On the other hand, a belt conveyor 2 is placed below the mold mounting frame 15.
7 is provided to transport the container 22 that has fallen below the mold 14 and to store it in the receiving box 28. Further, during transportation, the upper end of the container 22 is cut by the cutting blade 29. This is type 14
Containers formed within the container may have mismatched top edges (e.g., the heights of the side plates are uneven); Cutting is done to make the material uniform. The cutting blade 29 is stretched like an endless belt between two rollers 30 and rotates endlessly (usually a chain saw is used).
Container 22 transported by belt conveyor 27
It is placed in a position that makes contact with the upper end of the 31 is a motor that rotates the roller 30.

In order to prevent the occurrence of a situation in which the container conveyed by the belt conveyor 27 comes into contact with the cutting blade as described above, the conveyance of the container is stopped due to the contact, the container 22 on the belt conveyor 27 is A suction holding mechanism is provided on the belt conveyor 27. As for this mechanism, for example, a suction hole (not shown) is provided in the belt conveyor 27, and a suction chamber 32 is provided below the belt conveyor 27. By connecting the inside of the suction chamber 32 to a vacuum pump (not shown) and creating a negative pressure state, the containers 22 on the belt conveyor 27 are suctioned through the suction holes.
It is held by suction on the belt conveyor 27. With this configuration, the container 22 can be reliably moved in the conveyance direction while in contact with the cutting blade 29, so that cutting by the cutting blade is possible.

The material of the container manufactured by the apparatus of the present invention is a thermoplastic resin, and although a non-foamed resin can be used as the resin, a foamed resin is particularly preferably used. Various resins can be used as the foamed resin, particularly polystyrene homopolymer, styrene-maleic anhydride copolymer, styrene-acrylic acid copolymer,
Polystyrene resins such as styrene-acrylic acid ester copolymer and impact-resistant polystyrene prepared by blending polystyrene with butadiene, etc., are preferred.

The heating blade 1 and the mold 14 are configured so that the circumferential dimensions thereof can be arbitrarily adjusted according to the size of the container to be manufactured. below,
The four circumferential dimension adjustment mechanisms will be explained.

As shown in FIGS. 2 and 3, the heating blade structure 6
consists of two divided blade parts 33 and 44,
These blade parts 33 and 34 are connected to each other by a bridge member 35. Other heated blade structures 7, 8, 9
Similarly, it is composed of two blade parts and a bridge member that connects them. Blade portion 3 in heating blade structure 6
3 and the bridge member 35, and the blade portion 34 and the bridge member 35 are connected and fixed by fixing fittings 39, respectively.
The same applies to the other heating blade structures 7, 8, and 9. A groove 40 is provided at the lower part of each piece member 35, 36, 37, and 38, and a heating blade structure is provided in the groove of the piece member 35. The blade part 33 of the heating blade structure 6 is in the groove of the bridge member 36, the blade part 33 of the heating blade structure 7 is in the groove of the bridge member 37, and the blade part 33 of the heating blade structure 7 is in the groove of the bridge member 37.
The blade portions 33 of the heating blade structure 8 are slidably fitted into the grooves 8, respectively.

Of the two blade parts 33 and 34 in the heating blade structure, the shorter blade part 34 and the other heating blade fitted in the groove 40 of the bridge member are perpendicular to the blade part 34. The protruding portion of the blade portion 33 of the blade structure constitutes an L-shaped fusing blade 11.

Two insertion holes 41 and 42 are provided in the upper portions of the bridge members 35, 36, 37, and 38, and these insertion holes 41 and 42 are positioned so that their insertion directions are perpendicular to each other. In each of the first insertion holes 41,
Along the heating blade structures 6, 8, movable rods 43, 44
is inserted into the second insertion hole 42 along the heating blade structures 7 and 9, that is, the movable rod 4 is inserted into the second insertion hole 42, respectively.
Movable rods 45, 46 are inserted in a direction perpendicular to 3, 44. Each movable rod 43, 44, 45, 4
Guide receivers 47 are provided at both ends of the guide member 6, and these guide receivers 47 are adapted to be guided and supported by fitting into guide rods 48 provided around the four circumferences.

Further, a threaded rod 49 is screwed into the movable rods 43 and 44, and a screw rod 50 is screwed into the movable rods 45 and 46, respectively. A thread groove with a reverse thread relationship is carved. 51 is a screw rod holder, 52,5
3 is a handle for turning the threaded rods 49 and 50, and 54 is a main frame.

In the above configuration, when the handle 52 is turned in the direction of arrow A (FIG. 4), the movable rods 43 and 44 move toward each other, for example (directions of arrows C and D in FIG. 4).
, and if they are turned in the opposite direction of arrow B, they will move away from each other, for example. Similarly, when the handle 53 is turned forward or backward, the movable rod 45
and 46 move toward or away from each other.

Suppose now that the movable rods 43 and 44 move in directions C and D. At this time, the movable rod 43 is moved to the bridge members 35, 3.
The bridge members 35 and 36 are moved in the C direction while being in contact with the first insertion holes 41 of No. 6. At this time, the second insertion hole 42 is fitted into the movable rods 45 and 46 and moves in the axial direction thereof.

In this case, the bridge member 35 and the heating blade structure 6 are fixed, and the blade portion 33 of the heating blade structure 9 is fitted into the groove 40 of the bridge member 35.
slides on the blade portion 33 of the heating blade structure 9 and moves in the C direction together with the heating blade structure 6. Further, the bridge member 36 and the heating blade structure 7 are fixed, and the bridge member 36 is fixed.
Since the blade portion 33 of the heating blade structure 6 is fitted into the groove 40 of the heating blade structure 6, the bridge member 36 is in contact with the heating blade structure 6 in the groove 40, and the bridge member 36 is attached to the heating blade structure 6 in the groove 40 of the heating blade structure 6. 6 in direction C. At the same time, the heating blade structure 7 fixed to the bridge member 36 also moves together with the bridge member 36 and the heating blade structure 6. In this way, the heating blade structures 6 and 7 move integrally in the C direction.

When the movable rod 44 moves in the D direction, the heating blade structures 8 and 9 integrally move in the same direction D based on the same principle as above.
move in the direction. In this way, the dimensions can be adjusted in such a way that the distance x (FIG. 2) between the opposing heating blade structures 6 and 8 becomes smaller. Handle 5
2 in the opposite direction to move the movable rods 43 and 44 apart, the distance x can be increased.

Distance y (second
(Fig.) can be adjusted by turning the handle 53. By rotating the handle 53 in the forward or reverse direction, the movable rods 45 and 46 move toward or away from each other (in the directions of arrows E and F in FIG. 4), and at this time, the pieces of the bridge members 35, 36, 37, and 38 The piece member is moved toward E or downward while it is in contact with the second insertion hole 42.

The bridge member 35 moves the heating blade structure 9 integrally with the heating blade structure 6 while being in contact with the heating blade structure 9 in its groove 40 . The piece member 38 connected to the heating blade structure 9 slides on the blade portion 33 of the heating blade structure 8 . In this way, the heating blade structures 6 and 9 move integrally in the E or F direction. Similarly, the heating blade structures 7 and 8 move together in the E or F direction. These moving mechanisms are exactly the same as those using the handle 52 described above. In this way, the distance y between the heating blade structures 7 and 9 can be adjusted.

Thus, by adjusting the interval x and/or the interval y using the heating blade interval adjustment mechanism, the four circumferential dimensions of the heating blades can be changed as appropriate.

If, as in this embodiment, the heating blade assembly is provided with a bridge member, a movable rod is inserted into the bridge member, and the heating blade assembly is moved via the movable rod,
There is an advantage that there is no need to make the heating blade structure longer than necessary, and that the movement of the heating blade structure can be performed smoothly by supporting the movable rod on the guide rod.

Next, a mechanism for adjusting the four circumferential dimensions of the mold 14 will be explained.

As shown in FIG. 5, the mold 14 includes four mold constituent frames 16, 17, 18, 19 and supporting members 55,
6, 57, and 58. Support members 55, 5
6, 57, 58 are grooves 59 as shown in FIG.
and through holes 60 and 61 that are perpendicular to each other. The vertical part of the L-shaped mold construction frame 16 is slidably fitted into the groove 59 of the support member 55, and a vertical part of the mold construction frame 16 is arranged on one side of the outer surface in a direction perpendicular to the mold construction frame 16. The mold structure frames 17 are connected and fixed via fixing fittings 62. In the same manner, mold construction frames are attached to other supporting members to form a mold 14 having a four-circumferential frame shape.

A movable rod 6 is inserted into the insertion hole 60 of the support members 55 and 58.
3 is fitted, and the insertion holes 60 of the support members 56, 57
A movable rod 64 is fitted into the supporting member 5.
A movable rod 65 is fitted into the insertion holes 61 of the support members 57 and 56, and a movable rod 66 is fitted into the insertion holes 61 of the support members 57 and 58 so as to be perpendicular to the movable rods 63 and 64. At both ends of each movable rod 63, 64, 65, 66, a guide receiver 68 is fitted and supported by a guide rod 67.
is provided, and each movable rod is guided and moved along a guide rod 67. Reference numerals 69 and 70 indicate threaded rods 71 and 7 having a reverse screw structure, which are screwed into the movable rods 65 and 66 and the movable rods 63 and 64, respectively.
2 is a handle for turning the threaded rods 69, 70.

When the handle 71 is turned in the forward or reverse direction, the movable rods 65 and 66 move toward or away from each other, and at this time, the movable rods 65 and 66 remain in contact with the insertion holes 61 of the support members 55 and 58. The support members 55, 5
8 in the direction of arrow G or H (FIG. 5), the support member 58 is brought into contact with the mold frame 19 in its groove 59, and the mold frame 19 is moved.
is moved in the same G or H direction. At the same time, the support member 58 moves the mold structure frame 16 fixed to the support member 58 via the fixing fittings 62 in the G or H direction. At this time, the vertical portion of the mold frame 16 slides within the groove 59 of the support member 55. In this way, the mold construction frames 16 and 19 move integrally in the same G or H direction.

Similarly, the support member 56 integrally moves the mold structure frame 17 that is abutted in the groove 59 and the mold structure frame 18 fixed to the support member 56 in the G or H direction.

On the other hand, when the handle 72 is turned in the forward or reverse direction, the movable rods 63 and 64 move toward or away from each other, and according to the same principle as above, the support member 55 integrally holds the mold frames 16 and 17. The supporting member 57 moves the mold forming frames 18 and 19 integrally in the direction of the arrow I or J (FIG. 5).

Thus, the distance between the opposing mold frames 17 and 19 and the distance between the opposing mold forming frames 16 and 18 can be arbitrarily adjusted by the mold spacing adjustment mechanism.

As in this embodiment, if a support member is provided and the vertical part of the mold frame is slidably fitted into the groove of the support member, the mold frame is guided by the groove and moves. However, the movement is extremely smooth. Furthermore, as in this embodiment, if the movable rod is inserted into the support member and the mold frame is moved via the movable rod, the movable rod is supported by the guide rod and the mold frame can move smoothly. There is an advantage in that it can be done.

Next, the operation of the device of the present invention will be explained.

First, by the above-mentioned operation, the heating blade is
And adjust the four circumferential dimensions of the mold 14.

Next, as shown in FIG. 1, one original plate 23 is supplied onto the mold 14 by the ejecting plate 25. Thereafter, the heating blade 1 and the pressing plate 13 are lowered, and the four corners of the original plate 23 are cut by the cutting blade 11 of the heating blade, thereby obtaining a box development plate 73 as shown in FIG. At the same time, the side plate 74 is
A bending groove 76 is formed at the boundary between the bottom plate 75 and the bottom plate 75 .

Thereafter, the heating blade 1 rises, and the pressing plate 13 further descends to push the box expanding plate 73 into the inner cavity 2 of the mold.
Push it to 0. As a result, as shown in FIG. 7, the side plates 74 rise up, and the fusing portions 77 at the ends of the side plates contact and fuse with each other in an uncured state.

Thus, a container 22 as shown in FIG. 9 is obtained. In the figure, 78 indicates a fused portion.

The obtained container 22 is further pushed down by the pressing plate 13, passes through the opening 21 of the mold mounting frame, and falls onto the belt conveyor 27 below. While the containers 22 are being conveyed by the belt conveyor 27, the upper ends are cut by the cutting blade 29 to make the height dimension uniform, and then the containers 22 fall into the receiving box 28 and are accumulated.

According to the present invention, it is possible to eliminate the trouble of replacing heating blades and molds one by one depending on the size of the container to be manufactured. Moreover, the present invention allows the heating blade components that constitute the heating blade to face each other,
The heating blades are supported on the heating blade interval adjustment mechanism so as to be able to approach or separate at the same time, and the opposing mold constituent frames of the mold are supported on the mold spacing adjustment mechanism so that they can be approached or separated at the same time, so that the heating blades and Since the four circumferential dimensions of the mold are configured to be adjustable, the heating blades and the mold can be adjusted by simultaneously moving the opposing heating blade components and the opposing mold component frames by operating the heating blade spacing adjustment mechanism and the mold spacing adjustment mechanism. Since the four circumferential dimensions are adjusted, the dimensions can be adjusted quickly and accurately with a simple operation.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a partially cutaway front view of the device of the present invention, FIG. 2 is a schematic diagram of the back side of the heating blade, and FIG. 4
The figure is a perspective view of the heating blade, Figure 5 is a perspective view of the mold, and Figure 6 is a perspective view of the mold.
The figure is a vertical sectional view taken along the line - - of Figure 5, Figure 7 is a front view of a partially cutaway part showing the box expansion plate pushed into the mold and the side plate raised, and Figure 8 is the box expansion plate. FIG. 9 is a perspective view of a container manufactured by the apparatus of the present invention, and FIG. 10 is a longitudinal cross-sectional view of a main part showing another example of the construction of a fusing blade in a heating blade. 1... Heating blade, 6, 7, 8, 9... Heating blade structure, 10... Bending groove forming blade, 11... Melting blade, 1
3...Press plate, 14...Mold, 16, 17, 18,
19...Mold constituent frame, 20...Inner cavity, 73...Box expansion plate, 74...Side plate, 75...Bottom plate.

Claims (1)

[Claims] 1. A heating blade having a bending groove forming blade and a fusing blade, assembled in the shape of a parallel cross, and provided so as to be freely raised and lowered, and a box expansion plate provided below the heating blade and obtained by the action of the heating blade. a mold comprising an inner cavity into which the box expansion plate is pushed in order to raise the side plate from the bottom plate;
In an assembled container manufacturing apparatus comprising a pressing plate which is provided to be freely raised and lowered and which presses a box expansion plate into the inner cavity of a mold, the heating blade structures constituting the heating blades are brought close to each other at the same time. The heating blades are supported in a spacing adjustment mechanism so that they can be separated from each other, and the opposing mold frames constituting the mold are supported in the spacing adjustment mechanism so that they can be moved toward or away from each other at the same time, so that the four circumferential dimensions of the heating blades and the mold can be adjusted. An assembly container manufacturing device characterized by being configured to be adjustable.