JP2544596B2 - Box-shaped container manufacturing equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to an apparatus for manufacturing a box-shaped container in which a fluid is sealed. More specifically, the present invention relates to a device for processing an ear portion formed at a corner of the box-shaped container on the side opposite to the opening side.

(Prior Art) Conventionally, as a method of manufacturing a box-shaped container in which a low-temperature fluid such as milk is sealed, a belt-shaped sheet material whose both surfaces are film-coated with a thermoplastic synthetic resin is doubled during transportation. Folded over,
After subjecting to a predetermined heat fusion treatment, a bag-shaped container having one end opened by cutting into a predetermined size is formed. Further, the bag-shaped container is expanded from the inside to form a box-shaped container with one end opened, and after filling the inside with the fluid, a predetermined heat fusion treatment is applied to the opening to seal the inside of the fluid. To produce a box-shaped container.

In this manufacturing method, when the bag-shaped container having one end opened is expanded from the inside to form the box-shaped container, the ears are formed at the corners on the side opposite to the opening side. It is necessary to attach it to. As a method of sticking the ears to the surface of the box-shaped container, conventionally, before filling the fluid into the box-shaped container, hot air is blown onto the ears and the surface of the box-shaped container to form a thermoplastic synthetic resin on the surface. A process of melting and pressing the ears against the surface of the box-shaped container to attach the ears was performed.

(Problems to be solved by the invention) However, in the conventional method as described above, when hot air is blown onto the surface of the box-shaped container, heat is transferred to the inner surface of the box-shaped container, and the thermoplastic synthetic resin on the inner surface is melted. However, there is a problem that pinholes are generated in the resin layer on the inner surface, and as a result, leakage of contents, alteration, etc. occur.

The present invention has been made in consideration of such a point, in manufacturing a hexahedral box-shaped container, the container surface is formed in order to heat-melt the ears formed at the corners of the container to the container surface. An object of the present invention is to provide a box-shaped container manufacturing apparatus capable of easily manufacturing a box-shaped container in which pinholes are not generated in the resin layer on the inner surface of the container even when heated with hot air.

(Means for Solving the Problem) The box-shaped container manufacturing apparatus of the present invention made to solve the above-mentioned problems is such that after filling the inside of the container with a fluid from one end of the container, the other end of the container is provided. A box-shaped container manufacturing apparatus for manufacturing a hexahedral box-shaped container in which a pair of ears formed on the surface of the container are adhered to the container surface, and a rotating plate for intermittently performing horizontal rotation motion, A container holder that holds the box-shaped container at equal intervals on the outer peripheral edge of the turntable, and a pair of ears that are provided at the bottom of the container holder and that are formed at the lower end corners of the box-shaped container A pair of rotation pressing members that rotate so as to press the container surface, and a box-shaped container that is provided on the outer periphery of the intermittent stop position of the rotating plate and to which the surface of the ear portion and the ear portion are attached. And a hot air heating device that blows hot air from a pair of L-shaped nozzles toward the surface of the container to melt the container surface A drive device for rotating the hot air heating device such that the tips of the pair of L type nozzles are located between the ears and the surface of the box-shaped container when the hot air is blown from the pair of L type nozzles. It has a configuration including.

(Example) The present invention described above will be described in more detail with reference to the drawings. FIG. 1 is a schematic view showing one embodiment of the manufacturing process of the box-shaped container according to the present invention. In FIG. 1, a box-shaped container manufacturing process includes a step of forming a sheet material into a bag-shaped container, a step of forming the bag-shaped container into a box-shaped container having an opening at one end, and a fluid material in the box-shaped container. It is roughly divided into the step of filling and sealing.

First, in the bag-shaped container forming step, a belt-shaped sheet material 1 whose both sides are covered with a thin film made of a thermoplastic synthetic resin with paper as a core material is guided from a reel 2 by a guide roller 3 provided at an appropriate position and fed. The sheet is conveyed by a device (not shown) and is double-folded by the press roller 4. The folded sheet material 1 is fused in a band shape at regular intervals in a direction perpendicular to the conveying direction by the heat fusing device 5 (sealing side edge a).

Then, based on the detection signal from the feed position detection device 6 which detects the feed position by shining light from above the sheet material 1, the feed device 7 intermittently fast-forwards a fixed size, and the cutter 8 at the feed stop position. The center portion of the sealing side edge a is cut by, and only the folded open side edge b is opened to form the bag-shaped container 9 in which the other three edges are closed. This bag-like container 9 is sent out sideways by the container attaching device 10 so as to be attached to the container supports 12 arranged at equal intervals on the peripheral surface of the rotating plate 11 installed on the opening edge b side, and the next box Enter the container forming process.

The bag-shaped container 9 is attached to the container support 12 by sucking the suction cups facing the upper and lower surfaces of the bag-shaped container 9 onto the upper and lower surfaces and then vertically separating the suction cups from the opening edge b of the bag-shaped container 9. This is done by widening the mouth and crowning the container support 12.

A large number of container supporting members 12 are arranged on the outer peripheral portion of the turntable 11 at equal intervals in the circumferential direction thereof, and a pair of container expanding members 12a, 12b.
The width 1 of each container expanding member 12a, 12b is substantially the same as the width of the container to be obtained.

The bag-shaped containers 9 are sequentially attached to the container support 12 by rotating the turntable 11 intermittently in synchronization with the carrying operation. During this installation work, the container expansion member 12
The tips of a and 12b are close to or in contact with each other to form a wedge-shaped side surface, so that the bag-shaped container 9 can be easily and surely attached.

After attaching the bag-shaped container 9 to the container support 12,
The bag-shaped container 9 is moved by the rotation of 11 to start the box-shaped container forming process.

First, at the position A, the container expanding member 12 of the container support 12 is
The a and 12b are expanded to a position where their outer surface sides are parallel to each other and the rear edge c side of the bag-shaped container 9 is expanded from the inside to form a substantially rectangular parallelepiped inverted box-shaped container. In this state, the turntable 11 is continued to turn intermittently, and at the position B, the end face and both side faces on the trailing edge c side are pressed by a press molding device (not shown) to form a rectangular box having ears 13a at the corners. Molded into
Here the ridge of the box is clarified. Then, at the C position, the ears 13a are mutually folded outward by a folding device to make creases.

When moving from the C position to the next D position, the container expanding members 12a and 12b are changed from the expanded state to a wedge-like tapered state so that the box-shaped container 13 can be easily separated from the container support 12. D
At the position, the tip of the container support 12 is directed downward, and the box-shaped container 13 slides down from the container support 12 and is stored in a bucket or the like of the fluid filling and container sealing device 14 to fill and seal the fluid. Move on to.

In the process of filling and sealing the fluid, E
At the position, the liquid such as milk is filled in the box-shaped container 13, both sides of the opening edge b are spread to the left and right at the F position, and the entire area of the opening edge b is fusion-sealed by the heat-sealing device 16 at the G position. Then, by pressing at the H position, a substantially rectangular parallelepiped closed box having ears 13b at the corners is formed, and at the I position, the ears 13b are folded inward. Next, at the J position, a box-shaped container is provided by a hot air heating device.
Hot air is blown to the end surface of 13 and the ears 13a and 13a and the upper surfaces of the ears 13b and 13b to melt the thermoplastic synthetic resin on the surface, and K
The ears 13a, 13a, the ears 13b, 13b are attached to the surface of the box-shaped container 13 by using the synthetic resin melted by the pressure bonding device at the position as an adhesive, and the hexahedral closed box-shaped container 15 containing the fluid is completed. Then, it is sent to the transport path of the next process. Here, when hot air is blown onto the container surface, the inside of the box-shaped container 13 is filled with the fluid, so that heat is not transferred to the inner surface, and the thermoplastic synthetic resin on the inner surface does not melt.

The process of attaching the ears 13a, 13a to the container surface is not limited to that performed at the positions J and K in the above-mentioned embodiment, and any method may be used as long as it is filled with the fluid in the box-shaped container. You may go by location. Further, the folding direction of the ear portion is not limited to that in the above embodiment, and the inside and outside may be selected and folded as appropriate. Further, when a box-shaped container having an opening at one end is stored in a bucket or the like in order to move to the next step of storing and closing a fluid, a detaching device is provided instead of the self-weight drop as in the above embodiment, and the container is forcibly moved. By doing so, the moving work can be made more reliable.

Next, an embodiment of a box-shaped container manufacturing apparatus of the present invention will be described with reference to the drawings starting from FIG.

2 is a schematic plan view showing a device for sticking the ears formed on the corners of the box-shaped container to the surface of the container, and FIG. 3 is a sectional view taken along the line II of FIG. The fixed plate 32 is non-rotatably inserted into the fixed shaft 29, and the fixed shaft 29 is fixed to the frame 31.

The turntable 50 has a gear 28 on the lower side and is rotatably supported by a fixed shaft 29 at a position below the fixed plate 32 via a bearing 30. Around the turntable 50, a plurality of container holders 51 including receiving plates 52 and auxiliary plates 53, 54 are arranged at equal intervals, and the lower surface of the receiving plate 52 is rotatable via pins 56, 56 at both ends. Square member 55 having a pair of pressers 57, 57 supported by the
Is attached. As shown in FIG. 5 and below, the presser 57 has a long hole 58 into which a rod 59 that is connected to a cam mechanism (not shown) and moves up and down by a certain distance is fitted, and is held by a container holder 51. The ears of the corners are pressed against the container surface.

On the other hand, the gearbox 22 installed inside the frame 20
A main shaft 21 connected to a drive motor (not shown) is connected to the input side of the, and a sprocket 24 and a gear 25 are connected to the output side.
Is connected to a shaft 23 that is inserted so that it cannot rotate. Gear 25
Since the gear 26 and the gear 26, the gear 26 and the gear 27, and the gear 27 and the gear 28 mesh with each other, the rotation plate 50 is rotated by the rotation of the main shaft 21.

Between the fixed platen 32 and the frame 20, a carrier 33 connected to an endless chain 35 that meshes with the sprocket 24 is arranged in parallel with the frame 20, and a partition plate 34 for holding a box-shaped container is provided on the surface of the carrier 33. The box-shaped containers are conveyed at right angles to the traveling direction of the box 33 and are transported. A discharge conveyor (40) is installed in the vicinity of the periphery of the stationary platen (32) in the direction perpendicular to the traveling direction of the carrier (33), and discharges the box-shaped container in which the fluid is sealed. An arm 36 having one end rotatably supported by a pin 37 is provided in the vicinity of the box-like container entry side of the discharge conveyor 40, and a piston rod 39 of an air cylinder 38 is appropriately attached to the arm 36 via an attachment (not shown). Arm connected by expansion and contraction of connected piston rod 39
36 is designed to rotate.

Further, on the opposite side of the discharge conveyor 40 across the fixed plate 32 and the rotary plate 50, a hot air heating device for heating hot air to the corners of the box-shaped container and the container surface is arranged. As shown in FIGS. 3 and 4, lower hot air heating devices 61, 61
Has L-shaped nozzles 62, 62 at the tip, and the central part is the arm
It is connected and held by a holding member 63 having 64. arm
One end of 64 is rotatably supported by one end of a support member 67 fixed to the gantry 31 via a pin 68, and a plate member is provided on the surface of the gantry 31 side.
Has 65. One end of the plate material 65 has a pin 66 attached to an attachment 70 attached to a piston rod of an air cylinder 69.
Is rotatably supported via the air cylinder 69
It is rotatably supported via a pin 72 on a support member 71 that is fixedly supported by. On the other hand, the hot air heating device 73 on the upper side is fixedly supported on the stationary platen 32 by the holding member 74 and the plate member 75. Next, the operation of the box-shaped container manufacturing apparatus described above will be described. The box-shaped container 13 in which the fluid is focused and the opening is sealed is transported to the position P _{0 by} the carrier 33, transferred to the container holder 51 by the pusher (not shown), and the receiving plate of the container holder 51. The ears 13a, 13a of the box-shaped container 13 are located on the 52 side,
With the ears 13b, 13b on the auxiliary plate 54 side, hold the container holder.
Will be held at 51. The box-shaped container held by the container holder 51 is sequentially and intermittently conveyed from the position P _{1 to} the positions P ₂ , P ₃ , P ₄ , P ₅ , P ₆ , and P ₇ . The ears 13a, 13a and the ears 13b, 13b formed at the corners of the box-shaped container 13 are open to the outside as shown in FIG. 5 at the positions of P ₁ and P ₂ . When the box-shaped container 13 moves from the position P ₂ to the position P ₃ , rods 59, 59 fitted into the long holes 58, 58 provided in the pressers 57, 57 are moved upward by a cam mechanism (not shown). The pressers 57, 57 rotate toward the box-shaped container 13 and the ears 13a, 13a are slightly lifted. When the box-shaped container 13 reaches the position of P ₃ , the air cylinder 69 operates as shown in FIGS. 3 and 6, the arm 64 rotates, and the L-shaped nozzle attached to the tips of the hot air heating devices 61, 61. The tips of 62, 62 move to a position between the ears 13a, 13a of the box-shaped container 13 and the container surface. Here, hot air is blown from the tip portions of the nozzles 62, 62 to the upper surfaces of the ears 13a, 13a and the surface of the box-shaped container, and the thermoplastic synthetic resin on the surface is melted. This time,
The box-shaped container 13 filled with fluid and sealed at the opening is an ear.
Since 13a, 13a is held by the container holder 51 with the lower side, the inside of the container surface of the box-shaped container 13 to which the ears 13a, 13a are crimped is filled with a fluid, so heat is applied to the inner surface. There is no transmission and the thermoplastic synthetic resin on the inner surface does not melt. Also, the thermoplastic synthetic resin on the surface of the upper surface of the box-shaped container 13 and the upper surfaces of the ears 13b and 13b is melted by the hot air blown from the tip of the hot air container device 73. When this melting process is completed, the air cylinder 69 operates and the arm 64 rotates, the nozzles 62 and 62 are separated from the box-shaped container 13 together with the hot air heating devices 61 and 61, and the box-shaped container 13 becomes movable. Then, the box-shaped container 13 is set to P ₃
Is moved to the position of P ₄ . At this time, as shown in FIG. 7, the rods 59, 59 are moved further upward by a cam mechanism (not shown), the pressers 57, 57 are rotated toward the box-shaped container 13 side, and the ear 13
a and 13a are pressure-bonded to the container surface. Also, the upper ears 13b, 1
3b is also crimped to the surface of the box-shaped container 13 by a crimping mechanism (not shown). Ears 13a, 13a and ears 13b, 13b are clamped 57, 57
And the box-shaped container 13 is sequentially conveyed from P ₄ to P ₅ and P ₆ while being pressed against the surface by the crimping mechanism (not shown),
During this transportation, the molten thermoplastic synthetic resin is solidified and the ears 13a, 13a and the ears 13b, 13b are attached to the container surface. Next, when the box-shaped container 13 moves from the position P ₆ to the position P ₇ , the cam mechanism (not shown) causes the rods 59, 59 to move downward and the pressers 57, 57 to rotate in the direction in which they are separated from the box-shaped container 13. Then, the pressing of the ears 13a, 13a against the container surface is released. Further, the pressing of the ears 13b, 13b against the container surface by the crimping device is also released. When the box-shaped container in which the ears 13a, 13a and the ears 13b, 13b are released from being pressed reaches the position of P ₇ , the second
The air cylinder 38 shown in the figure operates, and the arm 36 moves the turntable 50.
The box-shaped container 13 is rotated in the direction in which it is further separated, and the container holder 51
Then, it is transferred to the discharge conveyor 40 and discharged.

The process of crimping the ears 13b, 13b formed at the upper corners of the box-shaped container to the container surface is performed when the box-shaped container 13 is transported around the turntable 50 as in the above embodiment. The present invention is not limited to this, and may be performed when the box-shaped container 13 is conveyed on the carrier 33 or the discharge conveyor 40.

(Effect of the Invention) A box-shaped container manufacturing apparatus of the present invention holds a box-shaped container filled with a fluid in a container holder arranged on an outer peripheral edge of a rotating plate which intermittently performs a horizontal rotary motion. Since the ears formed at the lower corners of the box-shaped container are attached to the container surface by heat fusion, the inside of the container surface to which the ears are attached is reliably filled with fluid. The heat for heating the surface of the container does not reach the inner surface of the container. Therefore, the thermoplastic synthetic resin on the inner surface of the container does not melt, and a box-shaped container without pinholes can be easily manufactured.

Further, in the box-shaped container manufacturing apparatus of the present invention, since the rotating pressing member is provided in each container holder, the container can be held for a constant period of time while the rotating plate makes intermittent horizontal rotation motion. Since the surface and the ears can be pressure-bonded, it is possible to stably manufacture the box-shaped container in which the surface of the container and the ears are securely attached.

[Brief description of drawings]

FIG. 1 is a schematic manufacturing process diagram showing an embodiment of the method for manufacturing a box-shaped container of the present invention, and FIG. 2 is an embodiment of a device for sticking the ears formed on the corners of the box-shaped container to the surface of the container. FIG. 3 is a schematic plan view showing an example, FIG. 3 is a sectional view taken along the line II of FIG. 2, FIG. 4 is a view taken along the line II-II of FIG. 2, FIG. 5, FIG. 6 and FIG. It is a schematic diagram showing a process of pressure-bonding the above-mentioned ears to the surface of a container. 1 …… Strip-shaped sheet material 4 …… Press roller 7 …… Feeding device 8 …… Cutter 9 …… Bag-shaped container 11 …… Rotating plate 12 …… Container support 13 …… Box-shaped container 13a, 13b …… Ear 14 …… Container sealing device 21 …… Main shaft 22 …… Gabox 24 …… Sprocket 29 …… Fixed shaft 31 …… Stand 32 …… Fixed plate 33 …… Carrier 34 …… Partition plate 35 …… Endless chain 36 …… Arm 38, 69 …… Air cylinder 40 …… Discharge conveyor 50 …… Rotating plate 51 …… Container holder 53, 54 …… Auxiliary plate 57 …… Presser 61 …… Hot air heating device 62 …… L-shaped nozzle 73 …… Hot air heating device

Claims (1)

(57) [Claims] 1. A hexahedron-shaped box shape in which a fluid is filled from one end of a container to the inside of the container, and a pair of ears formed at the other end of the container are then attached to the surface of the container. A box-shaped container manufacturing apparatus for manufacturing a container, comprising a rotating plate that intermittently performs a horizontal rotating motion, and the rotating plate is arranged at equal intervals on an outer peripheral edge portion of the rotating plate,
A container holder that holds the box-shaped container, and a pair of rotatable parts that are provided at the bottom of the container holder and that rotate so as to press the pair of ears formed at the lower end corners of the box-shaped container against the container surface. Hot air is blown from the pair of L-shaped nozzles toward the surface of the ear and the surface of the box-shaped container to which the ear is attached, which is provided on the outer periphery of the rotating pressing member and the intermittent stop position of the rotating plate. A hot air heating device that melts the surface of the container, and when the hot air is blown from the pair of L-shaped nozzles, the tips of the pair of L-shaped nozzles are positioned between the ears and the surface of the box-shaped container. A box-shaped container manufacturing apparatus, comprising: a drive device for rotating a hot air heating device.