JPH0649494B2 - Container forming equipment - Google Patents

Description

TECHNICAL FIELD The present invention relates to a container forming apparatus for pressing a container into a predetermined shape.

[Prior Art] Conventionally, for example, in a manufacturing apparatus for manufacturing a rectangular parallelepiped-shaped paper container, a belt-shaped sheet is formed into a tubular shape, a liquid is filled inside the tubular sheet, and a tubular member filled with the liquid is formed at required intervals. Horizontally seals the liquid. Then, by cutting the tubular member at the lateral seal portion, the containers in which the liquid is sealed are individually separated, and then the containers are pressed from a predetermined direction to form a rectangular parallelepiped (Japanese Patent Laid-Open No. 61-61). 473
No. 12).

Further, conventionally, as a container forming device for forming a container into a rectangular parallelepiped, a device has been proposed in which the container is simultaneously sandwiched and pressed from front, rear, left, right, and upper and lower six surfaces (West German Patent 1st).
221954).

[Problems to be Solved by the Invention] However, in the latter container forming apparatus, since a mechanism for holding the six faces of the container in one rotating body is incorporated, the mechanism becomes complicated and expensive, and Maintenance and inspection were complicated.

[Means for Solving the Problems] In view of such circumstances, the present invention provides a first clamp mechanism that holds the side surface of the container from both sides in the transport direction of the container, and the first clamp mechanism.
A first circulating and conveying means for circulating and conveying the clamp mechanism on a predetermined movement locus; a first supporting member provided on the first circulating and conveying means for supporting the inner surface of the container from the inside of the circulation locus; Second for holding the front and rear surfaces of the container from the front and rear in the transport direction
A clamp mechanism, a second circulation transfer means for circulating and transferring the second clamp mechanism on a predetermined movement locus in synchronization with the operation of the first circulation transfer means, and a second circulation transfer means provided in the second circulation transfer means and circulating the same. A second support member for supporting the inner surface of the container from the inside of the locus, and the first support member and the second support member are placed at predetermined positions by the synchronous operation of the first circulation transfer unit and the second circulation transfer unit. At a predetermined distance from each other, and at the position, the first clamp mechanism, the second clamp mechanism, the first support member and the second support member simultaneously clamp the peripheral surface of the container to press-mold the container. It is the one.

[Operation] According to the above configuration, the first circulating mechanism may be provided with the first clamp mechanism and the first supporting member, and the second circulating mechanism may be provided with the second clamp mechanism and the second supporting member. Therefore, the structure of each circulating and conveying means is simplified, and therefore, it can be manufactured at a lower cost in comparison with a conventional single rotary body in which all of them are incorporated, and maintenance and inspection are also easy.

[Examples] The present invention will be described below with reference to the illustrated examples. In Fig. 1, a strip-shaped sheet on which a thermoplastic film is applied, a desired pattern is printed, and predetermined folding lines are formed in accordance with the printing. The side edges of the tube are superposed on each other and heat-welded by the vertical sealing device 1 to form the tube body 2.

The tube body 2 is adapted to be conveyed vertically from above, and the filling liquid injection pipe 3 is inserted into the tube body 2 from the position just before the band-shaped sheet is molded into the tube body 2. The filling liquid is filled in the tube body 2 by the injection pipe 3. The filling material is not limited to the filling liquid, and may be powder or granular material.

The tube body 2 filled with the filling liquid is a horizontal sealing device 4
It is introduced into the inside of the container, and is heated and welded in a direction perpendicular to the longitudinal direction at a constant size by the horizontal sealing device 4 to sequentially perform horizontal sealing. The enclosed container 5A is formed.

The horizontal sealing device 4 includes a rotating body 6 that rotates in a vertical plane.
And a large number of inner frames 7 provided on the outer peripheral portion of the rotating body 6 and an outer frame 8 that is openably and closably provided on each of the inner frames 7. The outer frame 8 is vertically opened. By supplying the tube body 2 to the outside of the inner frame 7 from above and then closing the outer frame 8, the inner frame 7 and the outer frame 8 sandwich the required position of the tube body 2 in a direction orthogonal to the longitudinal direction. I am letting you.

Then, in this state, the sandwiched portion is heat-welded to laterally seal the tube body 2 to form the container 5A in which the filling liquid is sealed between the pair of lateral seal portions as described above. Such a horizontal seal device 4 is disclosed in, for example, Japanese Patent Laid-Open No. 61-
It is already known in the art as described in JP-A-47312, JP-A-61-69510, JP-A-61-178806 and the like.

Containers formed by the horizontal sealing device 4 and continuous with each other
5A is then cut by the cutting device 10 at the central portions of the various seals and separated into individual containers 5B. This container 5B
As shown in FIG. 2a, it has a vertical seal part 5a sealed by the above-mentioned vertical seal device 1 along the transport direction and a horizontal seal part 5b sealed by the horizontal seal device 4 before and after the transport direction. When it is sandwiched between the inner frame 7 and the outer frame 8 of the lateral sealing device 4, it is partially bent along a fold line formed in advance on the band-shaped sheet and molded into a flat container 5B. .

The cutting device 10 includes the rotating body 6 that constitutes the lateral sealing device 4.
The rotary body 11 is provided in the vicinity of the diagonally upper position of the rotary body 11 and rotates in synchronization with the rotary body 6, and the rotary cutter 12 is disposed above the rotary body 11 and rotates synchronously. Pockets 13 for accommodating the containers 5A or 5B are formed at predetermined intervals on the outer peripheral surface of the rotating body 11, and negative pressure passages 14 for adsorbing and holding the containers are opened at the inner bottoms of the pockets 13 for negative pressure. The passage 14 is connected to a negative pressure source via a rotary joint (not shown).

The continuous containers 5A transferred from the horizontal sealing device 4 to the cutting device 10 are respectively accommodated in the pockets 13 and are adsorbed by the negative pressure of the negative pressure passages 14 so that the respective pockets are absorbed.
Positioned in place within 13 and thereby each container 5A
Is accurately adjusted to a predetermined interval. Then, in this state, the horizontal cutter portion 5b in the middle portion of each container 5A is cut by the rotary cutter 12 to be separated into individual containers 5B, and the separated containers 5B are formed into a container forming device 20 that press-molds this into a rectangular parallelepiped. Supplied. At this time, the suction of the container 5B by the negative pressure passage 14 is released.

The container forming device 20 includes two synchronously rotating first rotating body 21 and second rotating body 22, and one first rotating body 21 holds both sides of the container 5B from both axial sides of the rotating body. The second clamp body 23 holds the first clamp mechanism 23, and the other second rotary body 22 holds the front and rear of the container 5B from both sides in the circumferential direction of the rotary body.
It has 24 each.

Further, the first rotating body 21 is provided with a first supporting member 25 for supporting the radially inner side surface of the container 5B sandwiched by the first clamp mechanism 23, and the second rotating body 22 is also provided with a second clamp. A second support member 26 for supporting the radially inner side surface of the container 5B sandwiched by the mechanism 24 is provided, and both support members 25, 26 are located on a line A connecting the rotation centers of the rotary bodies 21, 22. When
Both supporting members 25 and 26 are capable of sandwiching both side surfaces in the radial direction of the container 5B.

Therefore, the containers 5B individually separated by the cutting device 10 are clamped by the first clamp mechanism 23 of the first rotating body 21 and are conveyed as the first rotating body 21 rotates.
When the container 5B is conveyed to above the line A, the container 5B
Both side surfaces in the radial direction of 5B are clamped by the support members 25 and 26, and at the same time, the second clamp mechanism 24 of the second rotary body 22 clamps the front and rear of the container 5B in the transport direction. As a result, the container 5B has its six peripheral surfaces clamped and pressed at the same time, and is shaped into a rectangular parallelepiped as shown in FIG. 2b.

At this time, the clamping force by the second clamp mechanism 24 is the first
The clamping force is set to be smaller than the clamping force by the clamp mechanism 23. Therefore, when the rotations of both the rotating bodies 21 and 22 proceed while the six peripheral surfaces of the container 5B are simultaneously pressed, the container 5B moves to the second position.
The container 5B is forcibly detached from the clamp mechanism 24, and the container 5B is delivered to the next ear bending device 100 while being clamped by the first clamp mechanism 23.

This ear bending device 100 is a device that bends all of the laterally protruding ears 5c formed on both sides of the rectangular parallelepiped container 5B shown in FIG. Body 10
1 is provided with a clamp mechanism 102 for sandwiching the front and rear surfaces of the container 5B in the transport direction, and the first of the container forming device 20 is provided.
A container whose both sides in the transport direction are clamped by the clamp mechanism 23.
The 5B can be clamped by the clamp mechanism 102 from the front and rear in the transport direction.

At this time, in order to transfer the container 5B smoothly and reliably from the first clamp mechanism 23 of the container molding device 20 to the clamp mechanism 102 of the ear bending device 100, the first rotating body 21 and the ear folding device 21 of the container molding device 20 are folded. A delivery device 50 for the container 5B is provided between the bending device 100 and the rotating body 101.

The delivery device 50 is the first rotating body of the container forming device 20.
It is provided with an endless first rope 51 hung around the outer circumference of 21 and an endless second rope 52 hung around the outer circumference of the rotating body 101 of the ear folding device 100. The first clamp mechanism 23 can clamp the container 5B on the outer circumference of the first rope 51, and the clamp mechanism 102 of the ear bending device 100 can clamp the container 5B on the outer circumference of the second rope 52.

The first rope 51 is hooked on the first roller 53 disposed on the front side in the transport direction of the container 5B with reference to the delivery position from the rotary body 21 to the rotary body 101, and is moved forward in the transport direction of the container 5B. The second rope 52 is stretched around the second roller 54 disposed on the rear side of the container 5B in the conveying direction and stretched to the rear side of the container 5B in the conveying direction. The two ropes 51 and 52 are arranged in parallel and engaged with the grooves formed on the outer peripheral surfaces of the rotating bodies 21 and 101 and the rollers 53 and 54, respectively.

Therefore, the container 5B includes the first rope 51 and the second rope 52.
The both side surfaces in the radial direction are supported by the first clamp mechanism 23 of the container forming apparatus 20 with almost no slip occurring on the ropes 51 and 52 in that state.
From the ear bending device 100, it can be smoothly and reliably delivered to the clamp mechanism 102. The second rope 52
Also serves as a guide for the container 5B from the ear bending device 100 to the ear bonding device 200 arranged on the downstream side.

The ear bending device 100 includes an arc-shaped first guide member 10 arranged on the outer periphery of the rotating body 101 and fixed to the frame 103.
4 and a pair of arc-shaped second guide members 105 fixed to the frame 103 at both axial positions of the rotating body 101.
The container clamped by the clamp mechanism 102 passes between the pair of second guide members 105 with the outer peripheral surface being supported by the first guide member 104, and at that time, both the second guide members are supported. By the ears 105, the ears 5c projecting on both sides of the container 5B are bent rearward in the transport direction to give a crease.

The container 5B that has passed through the ear bending device 100 is further supplied to the ear bonding device 200 described above, and the ear bonding device 200
The ears 5c on the front side in the conveying direction are heat-welded to both side surfaces of the container body and the ears 5c on the rear side in the conveying direction are heat-welded to the rear surface of the container body, thereby completing the rectangular parallelepiped container 5C shown in FIG. 2c.

The ear bonding device 200 is provided on the rotating body 201 and is a container.
A clamp mechanism 202 that holds four peripheral surfaces of the 5B except the radial inner and outer surfaces, and a circle that is attached to the frame 203 along the outer periphery of the rotating body 201 and that supports and guides the radially outer surface of the container 5B with respect to the rotating body 201. An arc-shaped guide member 204 and four pressure contact members 205, which are provided on the rotating body 201 and are in contact with the ears 5c of the containers 5B to press the same against the container body, are provided.

Further, in this embodiment, the clamp mechanisms 202 adjacent to each other in the transport direction are divided into a plurality of groups of four sets each.
That is, four containers 5B can be transported in each group, and therefore each group has a total of 16 press-contact members 205.

Each pressure contact member 205 belonging to each of the above groups is interlocked with a two-stage actuated cylinder device 207 via a connecting member 206, and all the pressure contact members 205 in the same group are actuated simultaneously by each cylinder device 207. Let me
The ears 5c can be moved in two steps between a close position in which the ears 5c are in close proximity to the container body and a press contact position in which they are pressed against the container body.

Outside the rotator 201, a total of 16 heaters 210 are provided for blowing hot air to the respective bonded portions of all the ears 5c belonging to the same group to heat those portions. Each heater 21
0 is attached to an arcuate swing member 211 disposed on the outer periphery of the rotary body 201, and a swing arm 212 supporting the swing member 211 swings around the rotation center of the rotary body 201. It is movably installed.

A cam follower 213 is attached to a required position of the swing arm 212, the cam follower 213 is engaged with the cam groove 215 of the cam member 214, and the drive shaft 216 of the cam member 214 is attached.
Is rotated by a motor (not shown) in synchronization with the rotation of the rotating body 201, so that the swing arm 212, the swing member 211, and the heater 210 can be swung back and forth.

When the cam member 214 is rotated, the heater 210 is synchronized with the movement of the containers 5B in one group and is advanced in the same direction at substantially the same speed to bond the ears 5c. The part is heated, and when it is further advanced to the required position, it is returned rapidly so that the heater 210 can be advanced again in synchronization with the movement of the containers 5B of the subsequent group.

Therefore, the pressure contact member 205 is pressed by the cylinder device 207.
In the state where the ears 5c are brought close to the container body by advancing the ears 5c to the proximity position, when the heating of the bonding portion between the ears 5c and the container body by each heater 210 is completed, the cylinder device
The pressing member 205 can be immediately advanced to the pressing position by 207, and all the ears 5c in the group can be pressed against the container body all at once. And thereby, the second c
The rectangular parallelepiped container 5C shown in the figure is completed.

The container 5C thus completed has the above-mentioned ear bonding device.
The transfer in the vertical plane by 200 is converted into the transfer by the discharging device 300 into the horizontal plane, and the discharging device 300 discharges it onto the horizontally arranged discharging conveyor 301.

Of the clamp mechanism 202 of the ear adhesive bonding device 200, the container
The clamp member 202a for supporting the rear surface of the container 5C in the conveying direction is formed in an L shape so as to be able to support the rear side of the container 5C in the conveying direction and the inner side surface in the radial direction, and to move back and forth in the radial direction of the rotating body 201. It is attached to the free end of the operating rod 220. On the other hand, a clamp member 202b that supports the front surface of the container 5C in the transport direction and a pair of clamp members 202c that support both side surfaces of the container 5C in the transport direction are attached to the rotating body 201.

The radial inner end of the operating rod 220 is the frame.
It is interlocked with the cam member 221 fixed to 203, and when the completed container 5C approaches the discharging device 300, the cam member
It is made to project outward in the radial direction by 221 so that the container 5C can be pushed out in the radial direction.

At this time, a clamping mechanism that holds the four sides of the container 5C in between.
202 has its clamps released and therefore the operating rod 22
When the clamp member 202a is pushed outward in the radial direction via 0, the container 5C supported by the clamp member 202a is pushed outward in the radial direction with respect to the other clamp members 202b and 202c. The clamp members 202b and 202c are relatively removed from both side surfaces and the front surface of 5C in the transport direction. At the front position of the guide member 204 in the transport direction, the container is
An arcuate guide member 222 that supports the radially outer surface and both side surfaces of the container 5C according to the extrusion of 5C is continuously provided.

On the other hand, the discharging device 300 includes a rotating body 302 that rotates in a horizontal plane in synchronization with the rotating body 201 of the ear adhering device 200. The rotating body 302 is located at an outer position in the radial direction of the rotating body 201. And is arranged at a substantially horizontal height position passing through the axis.

As shown in FIG. 3, on the upper surface of the rotating body 302, push members 303 protruding outward in the radial direction are attached at four positions at equal intervals in the circumferential direction. By rotating the upper part of the member 222 so as to traverse the axial direction of the rotating body 201, the pushing member 303 is conveyed from below to above along the guide member 222 and beyond the guide member 222. The container 5C can be pushed out in the rotational direction of the rotating body 302 by engaging with the side surface of the rotating body 302.

Further, along the periphery of the rotating body 302, an arcuate guide member 304 for supporting and guiding the radially outer surface of the container 5C with respect to the rotating body 302 is arranged and fixed, and below the container 5C. A guide member 305 that supports the bottom surface of the is disposed and fixed. The end of this guide member 305, that is, the container
A slanted portion 305a that is slanted downward is formed at the inlet of 5C, and the container 5C that has been moved upward from below by the rotation of the rotating body 201 is pushed in the direction of rotation in the horizontal plane of the rotating body 302. At this time, it can be guided obliquely upward along the inclined portion 305a.

The guide member 305 is provided above the inclined portion 305a.
A guide member 306 is disposed along and fixed to the container 5C, and the guide member 306 can prevent the container 5C guided obliquely upward along the inclined portion 305a from flying upward. Further, the discharge conveyor 301 is arranged at a position opposite to the container delivery position from the rotating body 201 to the rotating body 302 of the ear part bonding device 200.

Therefore, the container 5C that has been conveyed in the vertical plane by the clamp member 202a, has been extruded toward the rotating body 302, and has been guided by the guide member 222 is the rotating body 30C.
2 is extruded in a horizontal direction from the clamp member 202a onto the guide member 305 by the extruding member 303 provided on the second member, is further transferred in an arc shape along the guide member 304, and is delivered to the discharge conveyor 301 in an upright state. Like

In the above embodiment, the first holding unit that holds and conveys the container by the first clamp mechanism 23 provided in the first rotating body 21 of the container forming device 20 and the rotating body of the ear folding device 100.
Although the second holding portion is configured by the clamp mechanism 102 provided in 101, the present invention is not limited to this, and the container may be held and conveyed by a vacuum, a pocket or the like.

However, the structure of the container forming apparatus 20 will be described in more detail. Referring to FIGS. 4 and 5, the first rotating body 21 of the container forming apparatus 20 is formed into a disk shape and is arranged horizontally. Axis 28
The drive shaft 28 is linked to a motor (not shown). The brackets 29 are respectively arranged at the same positions on both side end faces of the first rotating body 21 at equal intervals in the circumferential direction.
And the first clamp member 23a is swingably attached to each bracket 29 via a shaft 30.

The first clamp members 23a are arranged in the radial direction of the first rotary body 21, and the first clamp members 23a located at the same positions on both end surfaces of the first rotary body 21 are used as a pair. The outer ends of the first clamp member 23a in the radial direction are projected outward from the outer periphery of the first rotating body 21 so as to face each other, and the side surface of the container 5B can be sandwiched between the facing surfaces. The holding surface 23b of the container is formed in a convex cylindrical shape having the tangential direction of the first rotating body 21 as an axis so that the container 5B can be reliably gripped. Therefore, the first rotating body 21
A pair of first clamp members 23 located at the same position on both end surfaces of the
The first clamp mechanisms 23 are constituted by a.

Gears 31 are formed in the pair of first clamp members 23a in the vicinity of the pivotal support portion of the shaft 30, and both gears 31 are meshed with each other to form a pair of clamp members 23a.
The a can be opened and closed in opposite directions. A cam follower 32 is provided on one of the first clamp members 23a, and the cam follower 32 is fixed to the frame 33.
When the cam follower 32 is integrally rotated with the rotation of the first rotating body 21 by engaging with the cam groove 35 of 34, each first clamp member 23a is moved to the cam groove 35a.
It is designed so that it can be opened and closed according to the 35 cam curve.

Further, a cylindrical portion 21a is formed on the outer peripheral portion of the first rotating body 21, and the outer peripheral surface required position of the cylindrical portion 21a is radially inward of the container 5B sandwiched by the first clamp mechanism 23 described above. It is used as the first support member 25 that supports the side surface of the. A negative pressure passage 36 is opened in each of the first indicating members 25 so that the negative pressure passage 36 communicates with a negative pressure source via a rotary joint (not shown), and the outer peripheral surface of the cylindrical portion 21a extends in the circumferential direction. The above-mentioned first ropes 51 are suspended in the two parallel grooves 37 formed as described above.

On the other hand, as shown in FIGS. 6 and 7, the second rotating body 22 of the container forming apparatus 20 is composed of two discs 22a arranged in parallel, and each disc 22a is connected to the drive shaft. It is attached to a drive shaft 40 arranged in parallel with 28. The drive shaft 40 is interlocked with the drive shaft 28 via a drive system (not shown) so that the first rotating body 21 and the second rotating body 22 can rotate in synchronization with each other.

A second clamp member 24a is arranged between the two discs 22a at equal intervals in the circumferential direction, and a second clamp is provided by a shaft 41 provided in the axial direction of the second rotor 22. It is mounted so that it can swing in the circumferential direction of 22. Each of the above second clamp members
The radial outer end of 24a projects outward from the outer periphery of the disc 22a, and a pair of second clamp members 24a adjacent to each other are provided.
The container 5B can be clamped by the front and rear
Moreover, the holding surface 24b is formed flat so as to facilitate the detachment of the container 5B. Therefore, the second adjacent to each other
The second clamp mechanism 24 is configured for each clamp member 24a.

Cam followers 43 are attached to the inner ends of the respective second clamp members 24a in the radial direction via elongated holes 42 formed in the circular plate 22a, and each cam follower 43 is attached to the frame 44.
It is engaged in the cam groove 46 of the cam member 45 fixed to.
When the cam follower 43 is integrally rotated with the rotation of the second rotating body 22, the second clamp members 24a facing each other in the circumferential direction are moved back and forth according to the cam curve of the cam groove 45. It can be opened and closed by rocking.

Further, the second supporting member 26 described above is attached to the outer peripheral portion of the second rotating body 22 at the intermediate position of each second clamp member 24a, and the container supporting surface of the second supporting member 26 is the container 5B. It is formed into a flat convex spherical surface in order to surely press and sandwich it with the first support member 25.

In the container forming device 20 having the above configuration, the first clamp mechanism 23 of the first rotating body 21 is opened when it approaches the rotating body 11 of the above-described cutting device 10, and the first clamp mechanism 23 is A container housed in the pocket 13 of the rotating body 11
When 5B is clamped, the negative pressure passage 14 on the cutting device 10 side is cut off from the negative pressure source, and the negative pressure passage 36 on the first rotating body 21 side communicates with the negative pressure source. Therefore, the container 5B is clamped by the first clamp mechanism 23 and, at the same time, is attracted to the first rotating body 21 by the negative pressure in the negative pressure passage 36.

The container 5B sandwiched by the first clamp mechanism 23 is rotated by the first rotary body 21 and the first rotary body 21 and the second rotary body 21 are rotated.
When it is conveyed to the line A connecting the rotation axis with the container 22, the container 5B
Support member provided on both sides in the radial direction of the first rotating body 21
25 and the second indicating member 26 provided on the second rotating body 22 are automatically sandwiched.

Further, since the pair of front and rear second clamp members 24a provided on the second rotary body 32 are transferred to the line A in the open state, they are clamped by the first clamp mechanism 23 as shown in FIG. The container 5B is inserted into the pair of second clamp members 24a while being bent toward the first rotating body 21 side by contacting the opened second seal members 24a at the front and rear horizontal seal portions 5b.

Then, in this state, due to the cam curve of the cam groove 46, the second clamp member 24a located on the front side in the transport direction of the container 5B is positioned in the counterclockwise direction in FIG. 6 and on the rear side in the transport direction of the container 5B. The second clamp member 24a is rotated in the clockwise direction in FIG. 6 at substantially the same time to clamp the front and rear of the container 5B in the conveying direction.

Therefore, the container 5B has six surfaces around the first clamp mechanism.
23, the first support member 25 and the second support member 26, and the second clamp mechanism 24 simultaneously clamp and press, so that they are molded into a rectangular parallelepiped shape as shown in FIG. 2b. At this time, the first clamp mechanism 23 may be further closed slightly to increase the pressure applied to the container 5B so that the container 5B can be molded into a better rectangular parallelepiped shape.

Further, as described above, the holding force by the second clamp mechanism 24 is set to be smaller than the holding force by the first clamp mechanism 23, and the holding surface 23b of the first clamp mechanism 23 is formed into a convex cylindrical shape to form the second clamp. Since the sandwiching surface 24b of the mechanism 24 is formed flat, the rotation of both the rotating bodies 21 and 22 proceeds while the six peripheral surfaces of the container 5B are simultaneously sandwiched and pressed, and
5B is forcibly released from the second clamp mechanism 24 while being sandwiched by the first clamp mechanism 23, and is conveyed toward the next ear bending device 100.

When the molding of the container 5B is completed, the first clamp mechanism 23 is opened only within a predetermined minute rotation range,
In the meantime, the negative pressure in the negative pressure passage 36 causes the container 5B to move to the first rotating body.
Hold on 21. Then, if only the negative pressure passages 36 located within the above-mentioned minute rotation range, or more simply all the negative pressure passages 36, can be disconnected from the negative pressure source by electromagnetic valves (not shown), liquid leakage, etc. It is possible to drop the defective container at that portion downward and discharge it from a normal line.

In addition, if necessary, the first support member 25 and the second support member 26
At least one of them may be provided so as to be movable back and forth in the radial direction, and the container 5B may be delivered from the first rotating body 21 to the second rotating body 22.

Further, in the above embodiment, each clamp mechanism 23, 24
Are provided on the rotating bodies 21 and 22 and are circulated and conveyed by rotation thereof, but the present invention is not limited to this, and they may be provided on a circulating and conveying means such as an endless chain or a conveyor.

"Effects of the Invention" As described above, in the container molding device according to the present invention,
Since the first circulating mechanism having a rotating body or the like may be provided with the first clamp mechanism and the first supporting member, and the second circulating mechanism may be provided with the second clamp mechanism and the second supporting member, respectively. The structure of each circulating and conveying means is simplified, and therefore, it is possible to obtain an effect that it can be manufactured at a lower cost by returning to a conventional single rotary body in which all of them are incorporated and the maintenance and inspection is easy. .

[Brief description of drawings]

FIG. 1 is a schematic configuration diagram showing an entire apparatus for manufacturing a paper container showing an embodiment of the present invention, FIGS. 2a, 2b, and 2c are perspective views showing the state of the container manufacturing process, respectively. The figure shows the ejector
An enlarged plan view of 300, and Fig. 4 is the container forming device shown in Fig. 1.
FIG. 5 is a partial enlarged view of a main part of the first rotating body 21 which constitutes 20; FIG. 5 is a sectional view taken along the line VV of FIG. 4; and FIG. 6 constitutes the container molding device 20 shown in FIG. FIG. 7 is a partially enlarged view of a main part of the second rotating body 22, and FIG. 7 is a sectional view taken along the line VII-VII in FIG. 5B ... Container, 20 ... Container forming device 21 ... First rotating body (first circulating and conveying means) 22 ... Second rotating body (second circulating and conveying means) 23 ... First clamp mechanism, 24 ... 2nd clamp mechanism 25 ... 1st support member, 26 ... 2nd support member

Claims (1)

[Claims] 1. A first clamp mechanism for sandwiching the side surface of the container from both sides in the conveying direction of the container, a first circulation transfer means for circulating and transporting the first clamp mechanism on a predetermined movement locus, and a first circulation. A first supporting member provided on the conveying means for supporting the inner surface of the container from the inside of the circulation path; and a second supporting member for sandwiching the front and rear surfaces of the container from the front and rear in the conveying direction of the container.
A clamp mechanism, a second circulation transfer means for circulating and transferring the second clamp mechanism on a predetermined movement locus in synchronization with the operation of the first circulation transfer means, and a second circulation transfer means provided in the second circulation transfer means and circulating the same. A second support member for supporting the inner surface of the container from the inside of the locus, and the first support member and the second support member are placed at predetermined positions by the synchronous operation of the first circulation transfer unit and the second circulation transfer unit. At a predetermined distance from each other, and at the position, the peripheral surface of the container is simultaneously clamped by the first clamp mechanism, the second clamp mechanism, the first support member and the second support member to press-mold the container. A container forming device.