JPS60154044A - Molding equipment for vessel drum in production unit for packaging vessel - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an apparatus for forming a container body in an apparatus for manufacturing containers for packaging juice, coffee, etc.

An object of the present invention is to continuously, smoothly and efficiently cut a packaging material formed into a tube in a packaging container manufacturing apparatus into lengths corresponding to one container to form a container body. An object of the present invention is to provide a container body forming device that can perform the following steps.

The container body forming device in the packaging container manufacturing apparatus according to the present invention includes a vertical fixed mandrel on which a container body forming tube is fitted, and a vertical fixed mandrel provided below the fixed mandrel.
and a horizontal rotary plate having a center of rotation different from the axis of the fixed mandrel, and a horizontal rotary plate that passes directly under the fixed mandrel so as to be movable up and down at a predetermined interval from each other, and at the upper limit position of the vertical stroke. A plurality of movable mandrels are opposed to the fixed mandrel with a gap therebetween, and a tube is pulled out from the fixed mandrel and fitted onto the mandrel, and a plurality of movable mandrels are provided so as to be horizontally movable so as to press the tubes respectively against both mandrels. It consists of upper and lower tube suppressing members, and a tube cutting blade that is horizontally movable so as to move in and out of the gap between the mandrels.

According to this invention, the tube is fitted between the fixed mandrel and the movable mandrel, and is cut by the cutting blade while being pressed from above and below the cutting point by the upper and lower suppressing members, so that the cutting operation is ensured. After cutting, the tube is fed in a horizontal direction perpendicular to the feeding direction of the tube by a horizontal rotary plate, so the cutting operation can be performed continuously at high speed, thus forming the container body smoothly and efficiently. can do.

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

As shown in FIG. 1, the packaging container consists of a cylindrical container body (1), and a lid (2) and a bottom lid (3) that respectively close the top and bottom openings of the cylindrical container body (1). The container body (1) is formed by forming a web (4) made of a paper-based composite material into a tube (5), which is then cut into lengths corresponding to one container. (see Figure 3), with the inner surfaces in order of polyethylene (6), aluminum foil (7),
It consists of five layers: polyethylene nyphthalate (8), paper (9) and polyethylene (10). A seam (11) is formed in the longitudinal direction of the container body (1) by joining the edges of the packaging materials in an overlapping state. The tray (2) is formed by injection molding of thermoplastic resin, and a fitting part (12) having an inverted U-shape in cross section is formed at the periphery in an upwardly projecting manner.

The fitting part (12) is fitted onto the top opening edge of the container body (1) from above and is joined to the opening edge by heat sealing. The bottom lid (3) has almost the same shape as the lid (2) and is formed by injection molding of thermoplastic resin, but as the thermoplastic resin melted during injection molding cools and becomes plasticized. At the same time, the container body (1
) is joined to the bottom opening edge of the

FIG. 2 shows the overall layout of the container manufacturing apparatus described above as viewed from above.

The packaging container manufacturing device converts the web (4) into a tube (5).
) and a tube forming device (13) for forming the tube (
5) to form a container body (1) into lengths corresponding to one container; A container bottom forming device (15) that closes the container bottom, and a fitting part (12) on the peripheral edge
A lid (2) made of thermoplastic resin having
It consists of a container body forming device 6) that closes the top opening of (-1), and a heat sealing device (17) that heat seals the fitting part (12) to the mouth edge.

Containers or containers in the process of being formed are fed and advanced in the directions indicated by the arrows in FIG. First to third horizontal rotary plates (37), (67), and (97) for conveying containers are arranged at a predetermined interval from each other in the order of the feeding direction. Each horizontal rotating plate (3
7) (67) Among (97), the first horizontal rotating plate (37
) is commonly used for the container forming device (14) and the container bottom forming device (15), and the second horizontal rotary plate (67) is commonly used for the container top device (
16) and the third horizontal rotating plate (97) constitute a heat sealing device (17), respectively. First horizontal rotating plate (37)
A container sterilizer (21) is installed between the and the second horizontal rotary plate (67).
) and a filling device (22) are arranged in series. Both the container sterilizer (21) and the filling device (22) are known and will not be described in detail, but both devices (21H22)
The container is sterilized and filled in an upright position.

The first horizontal rotary plate (37) and the container sterilizer (21) are equipped with a container discharge star wheel (23) and a chute (24).
via a container reversing conveyor (25). The container reversing conveyor (25) changes the container's posture to 1.
Convey while rotating 80 degrees. A container conveyor (26) is located between the filling device (22) and the second horizontal rotary plate (67).
and a second horizontal rotary plate (67)
and the third horizontal rotating plate (97) are connected by another container conveyor (27). Both conveyors (
26) and 27 are chain conveyors that circulate endlessly in a horizontal plane. Third horizontal rotating plate (97)
is equipped with a star wheel (28) and a conveyor (29) for container discharge. Each horizontal rotating plate (37) (6
7) (97), star wheels (23) (28), and conveyors (26) (27) (29) are synchronously and intermittently driven, respectively.

FIG. 3 shows details of the tube forming device (13).

The tube forming device (13) includes a fixed mandrel (31) suspended vertically from the tip of a cantilever arm (30).
, a heater (32) that blows hot air onto the side edge of the web (4), and a plurality of drum-shaped rollers arranged to surround a fixed mandrel (31) at a position below the heater (32). , a forming roller (33) that forms the sea urchin and the whelk (4) into a cylindrical shape with their edges overlapping each other, and a pressing roller that is disposed opposite to each other at a position below the forming roller (33). and a sealing roller (34) for sealing the overlapping edges of the web (4). A support bracket (
A guide roller (36) supported horizontally via a guide roller (35)
is provided. The web extending from the horizontal direction (
After being wrapped around the guide roller (36), the tube (4) is guided vertically downward and formed into a cylindrical tube (5) so as to surround the fixed mandrel (31).

FIG. 4 shows details of the container forming device (14).

The container forming device (14) is a tube forming device (13).
A fixed mandrel (31) that can also be used as a fixed mandrel (31) and a fixed mandrel (
A fixed mandrel (31) provided below the mandrel (31)
a horizontal rotating plate (37) having a rotation center different from the axis of the
A plurality of container holders (38) are provided at predetermined intervals so as to be movable up and down at positions that can pass directly under the fixed mandrel (31) of the horizontal rotary plate (37), and each container holder (38)
), a plurality of movable mandrels (39) are provided on the horizontal rotary plate (37) so as to be movable up and down, and are opposed to the fixed mandrel (31) with a gap at the upper limit position of the up and down stroke; Both mandrels (31) (3
Upper and lower tube suppressing members (9) are provided horizontally movably so as to press the tubes (5), respectively.
40) (41), and a tube cutting blade (42) that is horizontally movable so as to hang in and out of the gap between the mandrels (31) and (39).

The horizontal rotating plate (37) is supported at its center of rotation by a vertical rotating shaft (43). The container holder (38) has a hole (38a) through which the movable mandrel (39) is inserted, and a vertical rotation axis (38a) of the hole (38a).
A holder (44), which is semicircular when viewed from above, is provided along the semicircumference of the arm near 43).

The container pedestal (38) and the movable mandrel (39) are attached to the upper ends of the lifting rods (45) and (46), respectively. Both lifting rods (45046) are bushes (47)
A horizontal rotary plate (31) is slidably inserted through (48). A roller (51) is attached to the lower end of both lifting rods (45) (4G) via mounting members (49) and (50), respectively.
(52) is provided. Each roller (51) (52)
Both are placed on annular lifting cams (53) and (54) provided along their respective movement paths. Compression coil springs (55) (5B) fitted in the respective lifting rods f45, (46) are installed between the lower surface of the horizontal rotary plate (37) and the upper ends of the respective mounting members (49, 50). Each roller (51) (52) is always urged by these coil springs (55) (56) so as to be pressed against the cam (53) (54). The upper and lower tube suppressing members (40) and (41) are both divided into two short cylindrical parts, and when put together, the inner peripheral surface of the tube (
5), and its moving direction is the same as the moving direction of the tube cutting blade (42), and is in the radial direction of the horizontal rotary plate (37).

As shown in the figure, with the container holder (38) at the lower limit position and the movable mandrel (39) at the upper limit position, the tube (5) is fed forward by a fixed distance by a pinch row (not shown), and its lower end The feeding is stopped when the container is almost in contact with the container holder (38). This allows the tube (5
) has a length equivalent to one container of fixed mandrel (31
) and a movable mandrel (39)
It is covered over. At this time, the tube upper and lower pressing members (40) (, 41) and the cutting blade (42) are in an open state as shown by the solid line in the figure. From this state, the upper and lower suppressing members (40) and (41) move toward each other and press the tube (5) against the fixed mandrel (31) and the movable mandrel (39). Then the cutting blade (42)
moves forward in the same way as the respective suppressing members (40) and (41), thereby cutting the tube (5). In this way, the tube (5) is cut into a length equivalent to one container, and the container is created!
1 l (1), both the pressing members (40, 41) and the cutting blade (42) retreat to their original positions, and the horizontal rotary plate (37) is driven to remove the container body (1).
is placed on the container pedestal (38) and sent to the next step, the container bottom forming device (15).

FIG. 5 shows details of the container bottom forming device (15).

The container bottom molding fil (15) consists of a horizontal rotary plate for conveying containers (37) and a plurality of container holders (which are movable up and down at a predetermined distance from each other on the periphery of the horizontal rotary plate (37)).
38), an upper mold for forming a bottom cover (57) fixedly provided above the moving path of the container holder (38), and each container holder (38).
8) and a plurality of lower molds (39) for bottom cover injection molding, which are provided on a horizontal rotary plate (37) so as to be able to rise and fall freely.

The horizontal rotating plate (31) and container pedestal (38) shown in FIG. 5 are shared with the container body forming device [14] shown in FIG. In addition, the lower mold for injection molding (3
9) is also used as a movable mandrel of the container body forming device (14), and its top surface is formed flat so that the upper mold (57)
) forms a cavity which together forms the bottom cover (3).

The upper mold (57) for molding a tsurugi mountain has a fixed part (59) attached to a top plate (58) at a predetermined height from a horizontal rotary plate (37), and a fixed part (59) that is moved toward and away from each other. A split movable part (6
0).

An injection extruder (61) is arranged above the upper die (57). The injection extruder (61) has a feed hopper (6
2) and has a feed screw (63) inside thereof, a plunger (65), and a nozzle (66).

When the container body (1) is placed on the container pedestal (38) and carried above (just below the fourth hole), the container pedestal (38) rises, the lower mold (39) rises, and then the upper mold (57)
The molds of the upper mold (57) and the lower mold (39) are moved closer to each other so that both rotating parts (60) of the molds move from the open state shown by the chain line to the closed state shown by the solid line. The container is tightened and placed in the cavity formed by both molds (57039)! l] The bottom opening edge of (1) is fitted and confined.

In this state, the molten thermoplastic resin is extruded into the cavity by the injection extrusion method (61), and as the resin is cooled and plasticized, the bottom cover (3) is formed and at the same time the bottom cover (3) is formed. Joined.

Figure 6 shows details of the container top forming device (16).

The container top forming device (16) includes upper and lower horizontal rotary plates (67) and (68) that are arranged opposite to each other at a predetermined interval and rotate together, and a container top forming device (16) that rotates at the periphery of the lower horizontal rotary plate (68). A plurality of container holders (69) are provided at predetermined intervals so as to be movable up and down, and a plurality of container holders (69) are installed on the upper horizontal rotary plate (67) so as to be located directly above each container holder (69). An upper mold for lid injection molding (70), and upper and lower horizontal rotary plates (67) (68) that can move forward and backward directly under each upper mold (70).
In between, a plurality of lower molds for lid injection molding (71) are provided which rotate together with these molds and are movable up and down and horizontally movable.

The upper and lower horizontal rotating plates (67) and (68) are both fixed to a vertical rotating shaft (72). An injection extruder (13) is arranged above the upper horizontal rotating plate (67).

This injection extrusion m (73) is carried out by the container bottom forming device (1).
It has almost the same configuration as the injection extruder (61) in 5), but the tip of its nozzle (74) is connected to the upper horizontal rotating plate (6).
7) is connected to the center of the Upper horizontal rotating plate (67
) is formed with a plurality of passages (75) extending radially from the connecting end of the nozzle toward each upper die (70), and an auxiliary nozzle ( 76) are provided respectively. Auxiliary nozzle (7
6) is a needle valve (77), a compression coil spring (78) that always urges the needle valve (77) upward, and a roller (7) attached to the upper end of the needle valve (77).
9). The roller (79) is in contact with an annular nozzle opening/closing cam (80) provided above the path along which the roller (79) moves. This cam (80) controls the needle valve (
77) is raised and lowered, thereby opening and closing the passage (15).

Between the upper and lower horizontal rotating plates (67) (68), a vertical rotating shaft (72) and each upper mold (70) extend vertically and are rotatably supported by both horizontal rotating plates (67) (e8). A plurality of lower die support shafts (81) are provided.Support shaft (81)
The lower end of the rotary plate (θ8) passes through the lower horizontal rotary plate (θ8) and protrudes downward, and an arm (82) is fixed to the protruding end. A roller (83) is provided at the tip of the arm (82). A lower die moving cam (84) is provided on the side of the roller (83) along its movement path. By moving and pushing the roller (83) along this cam (84), the arm (82) swings, and the lower mold support shaft (81) accordingly rotates within a certain angle range. do. A sliding guide portion (85) having a rectangular cross section is formed over a certain length at the upper part of the lower die support shaft (81). A lower mold (11) is mounted in a cantilevered manner to this sliding guide portion (85) via a mounting boss (86). Lower mold support shaft (
A lower mold lifting hydraulic cylinder (87) is supported vertically upward on the lower horizontal rotating plate (68) on the side of the cylinder (81), and the rond (88) of this cylinder (87) is attached to the mounting boss (81). 86). Fluid pressure cylinder (8
1), the lower mold (71) is raised and lowered,
Further, as the lower die support shaft (81) is rotated as described above, the lower die (71) pivots in the horizontal direction about the support shaft (81). This allows the lower mold (71
) is advanced and retreated directly below the upper mold (70) and is matched with the upper mold (70). Further, the lower mold (71) is provided with a cooling water passage (89). This cooling water passage (89) is connected to a connecting pipe (
90) to a cooling water passage (91) opened in the axial direction of the vertical rotation shaft (72).

The container holder (69) is attached to the upper end of the lifting rod (92). , the lifting rod (92) is the container body forming device (14)
The structure and operation mechanism are almost the same as the lifting rod (45) of the container bottom forming device (15), and the bush (93)
, a roller (94), a lifting cam (95), and a compression coil spring (96).

A container pedestal (69) rotating together with the horizontal rotary plates (67) and (68) is loaded with a container body (1) having the same bottom and filled with contents from the container transport conveyor (26). At a position slightly before the receiving position in the container feeding direction, the upper mold (70) and the lower mold (71) are brought together as described above, and the thermoplastic resin is injected to form the rose (2).
is formed. A fitting part (12) having a square cross section is formed in the peripheral edge of the lid (2) in an upwardly projecting manner. The lid (2) thus formed is transported to the above-mentioned receiving position while being attached to the upper mold (70). When the lid (2) is brought to the receiving position, the container holder (69) is raised, causing the container 111 (1) to rise and its top lip to fit into the fitting part (12). It will be done. At the time of this fitting, the lid (2) has residual heat, and the residual heat slightly melts the thermoplastic resin layers (6) and (10) of the container body (1), so the fitting part (12) is attached to the container body (1). ) is temporarily sealed on the rim of the mouth. The container fil (1) covered with the lid (2) is thus transferred to another container conveyor (27) at a position 180 degrees opposite to the receiving position.

Figures 7 and 8 show details of the heat sealing device (17).

The heat sealing device (17) includes upper and lower horizontal rotating plates (97) and (98) which are arranged opposite to each other at a predetermined interval and rotate together, and a lower horizontal rotating plate (98). A plurality of container holders (99) are provided at predetermined intervals so that they can be raised and lowered, and a plurality of container holders (99) are provided in a protruding manner on the lower surface of the upper horizontal rotary plate (91) so as to be located directly above each container holder (99). a plurality of inner pressing members (100) that press the fitting portion (12) from the inner surface, and each inner pressing member (ioo)
attached to the upper horizontal rotary plate (97) so as to surround the
and a plurality of external pressing members (101) that press the fitting part (12) from the outside, and a heater (101) that heats the fitting part (12).
02).

The upper horizontal rotating plates (97) and (98) are both fixed to the vertical rotating shaft (103). Upper horizontal rotating plate (97)
The peripheral edge portion of the radially constant portion 1] is formed by an annular mounting plate (104) made of phenolic resin. An inner pressing member (100) is integrally provided with this mounting plate (104). The outer peripheral surface of the inner pressing member (100) is formed in a shape similar to the inner peripheral surface of the fitting part (12). The external pressing member (101) is an annular body formed into a tube shape from an elastic material such as silicone rubber, and is attached to the mounting plate (101).
04) is attached to the inner circumferential surface of an annular protrusion (105) provided on the lower surface of the inner pressing member (ioo) so as to surround the inner pressing member (ioo). An external pressing member (
101) is formed with a passage (106) for supplying pressurized air. A connecting pipe (107) is installed between the upper frontage end of this passageway (10G) and the external pressing member (101). A solenoid valve (108) for opening and closing the pressurized air supply passage is provided in the middle of the connecting pipe (107). The external pressing member (101) expands and contracts by opening and closing this valve (L, which supplies and stops pressurized air to the external pressing member (101) by opening and closing (108). There is a gap in which the fitting part (12) is fitted between the inner pressing member (101) and the inner pressing member (1[101).With the fitting part (12) fitted in this gap, the outer pressing member (
101) expands, both pressing members (100)
(101), the fitting part (12) is pressed against the rim of the container body (1) from both the inside and outside surfaces. Heater (102)
is a high frequency coil formed in a square annular shape, and is embedded along the outer peripheral surface of the inner pressing part 1 (ioo). The heater (102) is equipped with a high frequency oscillator (1
09) to the secondary coil (IIO) and the secondary coil (1
11). The container holder (99) has almost the same structure as the container top molding product (16), so its explanation will be omitted.

When the container body (1) covered with N(2) is transferred from the container transport conveyor (27) and placed on the container pedestal (99), the container pedestal (99) rises and the fitting part ( 12) is fitted between both pressing members (100) and (101).

In this state, both pressing members (100) (10
1), the fitting part (12) is pressed against the rim of the container body (1), and the heater (102) is energized for the required time to heat the aluminum foil layer (7) by induction. 1
2) and the thermoplastic resin layer (1) of the container body (1).
6) (10) is melted and the fitting part (12) is attached to the container body (1
) is heat-sealed to the edge of the mouth. The above operation is performed by container 11.
] (1) is carried out while being rotated and conveyed together with the horizontal rotary plates (97) and (98). In this way, the heat-sealed container 11(1) of M(2) is transferred to the discharge conveyor (29).
), it is taken out of the apparatus by the same conveyor (29) via the star wheel (28).

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a longitudinal cross-sectional view of a container, FIG. 2 is a plan view showing the overall arrangement of the container manufacturing apparatus, FIG. 3 is a front view of the tube forming apparatus, and FIG. 4 5 is a longitudinal sectional view of the container bottom forming device, FIG. 6 is a longitudinal sectional view of the container top forming device, FIG. 7 is a longitudinal sectional view of the heat sealing device, and FIG. 8 is a longitudinal sectional view of the container body forming device. The figure is a partially enlarged view of FIG. 7. (1) Container body, (2) Lid, 3) Bottom lid, (4> Web, (5) Tube, (
6) (10) Thermoplastic resin layer, (11) Seam, (12) Fitting portion, (13) Tube forming device, (14) Container body forming Device, (15)・
...Container bottom forming device, (1G)...Container top forming device, (17)...Heat sealing device, (31)...
Fixed mandrel, (37)...Horizontal rotating plate, (38)
... Container holder, (39) ... Movable mandrel (lower mold), (40) (41) ... Tube pressing member, (4
2)...Tube cutting blade, (57)...Upper mold, (6
7) (68)...Horizontal rotating plate, (69)...Container holder, (70)...Upper mold, (71)...Lower mold, (10
0)(101)...Inner/outer pressing member. 4 people other than above

Claims (1)

[Claims] A vertical fixed mandrel (31) on which the container body forming tube (5) is fitted, and a horizontal rotary plate provided below the fixed mandrel (31) and having a rotation center different from the axis of the fixed mandrel (31). (37) and the horizontal rotating plate (3) so that it passes directly under the fixed mandrel (31).
The mandrels (31
) with a gap between them, and the tube (
5) is pulled out from the fixed mandrel (31) and fitted over a plurality of movable mandrels (39), and the tube (5) is pressed against both mandrels (31) and (39) respectively, so that it can be horizontally moved like a hanger. Upper and lower tube pressing members (40) (41) provided and both mandrels (31)
(39) A container body forming device in a packaging container manufacturing device, comprising a tube cutting blade (42) horizontally movable so as to be able to move in and out of the one-cut gap.