JPH0454088Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention fills liquid containers sequentially conveyed by a conveying means with liquid through the openings of the liquid containers, and then seals the openings of the liquid containers by thermal welding. Used in liquid filling and sealing devices to remove some of the gas in the liquid container from the opening of the liquid container before the opening of the liquid container is sealed by thermal welding after filling the liquid container with liquid through the opening of the liquid container. The present invention relates to a degassing device for degassing.

(Prior Art) In a liquid filling and sealing device that seals the opening of the liquid container by thermal welding after filling liquid containers sequentially conveyed by a conveying means with liquid through the opening of the liquid container, a resin film is used as the liquid container. Paper containers with a coated inner surface are commonly used. When a liquid container is filled with a liquid heated to about 65 degrees Celsius to about 85 degrees Celsius in the liquid filling and sealing device as described above, the temperature of the liquid decreases after the opening of the liquid container is sealed by thermal welding. As a result, the vapor existing in the gap between the surface of the liquid in the liquid container and the sealed opening condenses, so that the pressure in the gap becomes lower than atmospheric pressure, and the liquid container after filling and sealing condenses. The so-called torso bulge phenomenon in which the side walls bulge outward does not occur.

However, in the liquid filling and sealing device as described above, when a liquid container is filled with a low-temperature liquid at room temperature or lower than room temperature, the surface of the liquid in the liquid container remains even after the opening of the liquid container is sealed by thermal welding. If the liquid container after filling and sealing is stored in a place where the temperature of the liquid is higher than the temperature of the liquid at the time of filling, the pressure in the gap between the container and the sealed opening cannot be lower than atmospheric pressure. A so-called bulging phenomenon occurs in which the side wall of the liquid container after being sealed bulges outward.

In order to prevent the above-mentioned so-called body bulging phenomenon from occurring when a liquid container is filled with a low-temperature liquid at room temperature or lower than room temperature in the above-mentioned liquid filling and sealing device, the above-mentioned degassing device is used. is used.

Such a deaerator is disclosed in, for example, Japanese Patent Application Laid-Open No. 55-29445.
This method is already known from Japanese Utility Model Publication No. 199501/1983. The deaerator described in both publications is fixed at the position where the sealing operation is performed in the liquid filling and sealing apparatus, and the liquid container is sent to the position where the sealing operation is performed after being filled with liquid. Immediately before the opening of the liquid container is sealed against the pair of side walls facing in opposite directions, the pair of pressing members is pressed to curve the pair of side walls inward. The liquid filling sealing device performs the sealing operation while the pair of side walls are pressed by the pair of pressing members of the degassing device. After the liquid filling and sealing device performs the sealing operation, the degassing device separates the pair of pressing members from the pair of side walls of the liquid container, and as a result, the side walls of the liquid container are slightly curved inward. In addition, the air pressure in the gap between the surface of the liquid in the liquid container and the sealed opening of the liquid container becomes a negative pressure, thereby preventing the so-called bulge phenomenon described above from occurring.

(Problems to be Solved by the Invention) However, in the conventional deaerator as described above, immediately before the opening of the liquid container is sealed, the liquid containers are oriented in opposite directions. Since the pair of pressing members is pressed against the pair of side walls, the pair of pressing members will apply a large force to the pair of side walls of the liquid container within an extremely short period of time. The liquid in the liquid container may ripple in the liquid container and wet the area near the opening of the liquid container. Leakage near the opening of a liquid container causes failure in sealing the opening of the liquid container by thermal welding.

(Means for Solving the Problems) This invention was made under the above circumstances, and the purpose of this invention is to close the opening of a liquid container sent to a position where the sealing operation is performed after filling with liquid. It is possible to prevent the liquid in the liquid container from rippling in the liquid container and wetting the area near the opening of the liquid container during the degassing operation before the sealing operation, and as a result, the thermal welding of the opening of the liquid container can be prevented. It is an object of the present invention to provide a deaeration device for a liquid filling sealing device that does not cause sealing failure during sealing work.

The object of this invention as described above is to be used in a liquid filling and sealing device that seals the opening of the liquid container by heat welding after filling liquid containers sequentially transported by a transporting means with liquid through the opening of the liquid container. moving so as to face the movement trajectory of the liquid container on the conveying means between a liquid filling work position where liquid is filled into the liquid container from the opening and a sealing work position where the opening is sealed by heat welding; a pair of pressing members disposed on both sides of the locus and movable between an approaching position where they approach each other until intersecting the locus of movement and a separated position where they move away from each other until they separate from the locus of movement; ; Between the liquid filling work position and the sealing work position, a pair of pressing members are moved at the opposite sides of the liquid container at approximately the same speed as the moving speed of the liquid container on the conveying means from the liquid filling work position to the sealing work position. The liquid container is moved while facing the pair of side walls, and the pair of pressing members is brought into light contact with the pair of mutually opposite side walls of the liquid container before the liquid container reaches the sealing work position on the conveying means. Then, until the liquid container on the conveying means reaches the sealing operation position, the distance between the pair of pressing members is gradually shortened, and the pair of pressing members are pressed against the pair of mutually opposite side walls of the liquid container. a pressing member driving means for gradually increasing the pressing force of the pressing member on the conveying means until the liquid container reaches the liquid filling work position to the sealing work position; and a liquid filling and sealing device characterized by comprising: This can be achieved with a degassing device.

(Function) The degassing device of the liquid filling and sealing device according to this invention, which is characterized by being configured as described above, fills the liquid containers sequentially conveyed by the conveying means with liquid through the openings of the liquid containers. It is used in a liquid filling and sealing device that later seals the opening of a liquid container by heat welding, and the liquid filling work position where liquid is filled from the opening into the liquid container and the sealing where the opening is sealed by heat welding. Arranged on both sides of the movement locus so as to face the movement locus of the liquid container on the conveying means between the working position and approaching positions where they approach each other until they intersect with the movement locus and distance from each other until they separate from the movement locus. A pair of pressing members are provided that are movable between the two and the separated positions. In the degassing device of the liquid filling and sealing device according to this invention, the pair of pressing members is moved between the liquid filling work position and the sealing work position by the pressing member driving means from the liquid filling work position to the sealing work position. The liquid container is moved facing the pair of mutually opposite side walls at substantially the same speed as the moving speed of the liquid container on the transport means, and the liquid container reaches a sealing operation position on the transport means. The pair of pressing members are first brought into light contact with a pair of mutually opposite side walls of the liquid container, and then the distance between the pair of pressing members is gradually increased until the liquid container on the conveying means reaches the sealing position. The pressing force of the pair of pressing members against the pair of mutually opposite side walls of the liquid container is gradually reduced until the liquid container on the conveying means reaches the liquid filling operation position to the sealing operation position. be strengthened.

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

Embodiment FIGS. 1 and 2 show a plan view and a cross section taken along the line - in FIG. 1 of a degassing device according to an embodiment of the invention for a liquid-filling and sealing device.

The liquid filling and sealing device includes a conveying means 18 having a guide rail 12 supported by a column 10 and a liquid container drive plate 16 driven by a chain 14 with rollers that moves along the guide rail 12.
It is equipped with

In this embodiment, the liquid container 20 conveyed by the conveying means 18 is constituted by an elongated paper tube whose inner surface is coated with a resin film and has a rectangular cross section. A flat bottom wall with a rectangular plane is formed by folding and heat welding the lower part of the cylindrical side wall, and the upper part of the cylindrical side wall forms an opening, which is then supplied onto the conveying means 18. . On the conveying means 18, the liquid container 20 has its bottom wall and side wall in contact with the guide rail 12, and the side walls located at the front and rear of the conveying direction of the conveying means 18 are supported by a pair of liquid container drive plates 16 adjacent to each other. . And the chain 14 with rollers is connected to the guide rail 12.
The liquid container 20 driven by the pair of liquid container drive plates 16 moves intermittently from the top to the bottom in FIG. 1 at a predetermined speed while slidingly contacting the guide rails 12. Liquid container 2 moving as described above on conveying means 18
0, the liquid filling and sealing device first cleans the inside of the liquid container 20 with clean air, then temporarily folds the upper part of the side wall of the liquid container 20 in preparation for heat welding, and then A predetermined amount of liquid, such as milk, fruit juice, or alcohol, is filled through the gap (opening) 22 at the top of the side wall of the temporarily folded liquid container 20, and finally, the liquid container 20 is temporarily folded. The gap (opening) 22 at the top of the side wall is sealed by heat welding. The upper part of the side wall of the finally sealed liquid container 20 has a gable roof shape, and the sealed container 20 having such a shape is widely distributed as a container for storing liquids such as milk, fruit juice, and alcohol. There is.

FIG. 1 shows a liquid filling work position where liquid is filled from the upper gap (opening) 22 into the liquid container 20 on the conveying means 18, and a gap (opening) 22 of the liquid container 20 filled with liquid. The sealing operation position, where the parts are sealed by heat welding, is indicated by arrows A and B, respectively. Downstream from the sealing position indicated by arrow B in Figure 1 (downward in Figure 1)
shows the liquid container 20 after the upper gap (opening) 22 has been sealed by heat welding at the sealing work position B.

On both sides of the conveying means 18 between the liquid filling work position A and the sealing work position B, there are a pair of liquid containers 20 on the conveying means 18 from the liquid filling work position A to the sealing work position B so as to face the movement locus. Pressing member 2
4 is placed. The pressing member 24 is made of synthetic resin such as high-density polyethylene, and has a substantially disk shape.

A pair of pressing members 2 are provided on one side of the conveying means 18 between the liquid filling work position A and the sealing work position B.
4 along the conveying means 18 at the same speed as the liquid container 20 on the conveying means 18;
The pair of pressing members 24 are moved between the liquid container 20 on the conveying means 18 between the liquid filling work position A and the sealing work position B.
A pressing member driving means 26 is provided for moving the pressing member between an approach position where the members approach each other until they intersect the locus of movement, and a spaced position where they move away from each other until they separate from the locus of movement.

The pressing member driving means 26 has a plate-shaped guide member 30 supported horizontally and parallel to the guide rail 12 of the conveying means 18 by a support 28 . A plate-shaped longitudinally movable member 32 is disposed above the guide member 30 and is disposed parallel to the upper surface of the guide member 30.
Two pairs of rollers 34 that engage with and roll on both side edges of the guide member 30 are rotatably attached to the lower surface of the guide member 30. Therefore, the longitudinally moving member 32 has two
By rolling the pair of rollers 34 on both side edges of the guide member 30, the pair of rollers 34 rolls in a state parallel to the upper surface of the guide member 30 in the longitudinal direction of the guide member 30 (that is, parallel to and parallel to the guide rail 12 of the conveyance means 18). (direction along the guide rail 12) in a horizontal state.

The longitudinally moving member 32 is connected to the other end of a drive lever 36 whose one end 35 is connected to the output shaft of a motor (not shown) via a reducer (not shown). By swinging within a predetermined range, the longitudinally moving member 32 reciprocates within a predetermined range in the longitudinal direction of the guide member 30. A predetermined range of swing of the drive lever 36 about one end 35 is controlled by a pair of stops 38 fixed on a frame (not shown).

Above the longitudinal moving member 32 is a conveying means 18.
A pair of width direction moving members 40 and 42 in the shape of a band plate are arranged extending in a direction orthogonal to the guide rail 12 of the guide rail 12 . The pair of width direction moving members 40 and 42 are moved in a direction perpendicular to the longitudinal direction of the guide member 30 in a state parallel to the upper surface of the guide member 30 (that is, parallel and horizontal to the guide rail 12 of the conveyance means 18). (in a direction perpendicular to the guide rail 12), and are stacked vertically. The extending end of the lower width direction moving member 40 passes below the guide rail 12 of the conveying means 18 and is directly below one of the pressing members 24 located on the opposite side of the guide member 30 with the guide rail 12 in between. It has been extended to Further, the extending end of the upper width direction moving member 42 is connected to the conveying means 18.
It extends to just below the other pressing member 24 located on the same side as the guide member 30 with respect to the guide rail 12 .

A pressing member 24 located directly above each of the extending end of the lower widthwise moving member 40 and the extending end of the upper widthwise moving member 42 is supported. Conveying means 1 facing
Sealed container 20 moving on guide rail 12 of 8
It is possible to rotate within a range of approximately 5 degrees in the vertical direction with respect to the side wall of the housing.

A plurality of roller grooves 44 in which a plurality of "rollers" are housed are formed on the lower surface of the lower widthwise moving member 40 in order to reduce the coefficient of friction of the widthwise moving member 40 against the upper surface of the guide member 30. , the lower surface of the upper widthwise moving member 42 has an upper widthwise moving member 42 relative to the upper surface of the lower widthwise moving member 40.
A plurality of roller grooves 46 in which a plurality of "rollers" are housed are formed in order to reduce the coefficient of friction.

Two pairs of width direction movement guide members 48 projecting upward from the upper surface of the longitudinal direction movement member 32 are in contact with both side surfaces of the pair of width direction movement members 40 and 42, and the upper width direction movement member 2 on the top of 42
A floating prevention roller 50 rotatably supported by the pair of width direction movement guide members 48 is in contact with the pair.
The floating prevention roller 50 is a pair of widthwise moving members 40, 4 in a direction orthogonal to the guide rail 12.
2 and a longitudinally moving member 3.
A pair of width direction moving members 40, 42 from the top surface of 2
prevents it from floating up.

Above the pair of width direction moving members 40, 42, there is a longitudinal direction of the guide member 30 in a state parallel to the upper surface of the guide member 30 (i.e., a state parallel and horizontal to the guide rail 12 of the conveyance means 18). A plate-shaped cam plate 52 extending in the direction along the guide rail 12 is disposed, and both longitudinal ends of the cam plate 52 are fixed to the guide member 30 by fixing means 53 such as bolts. There is.

As particularly clearly shown in FIG. 1, the end of the cam plate 52 on the filling position A side of the conveyance means 18 is wider than the end on the sealing position B side, and the wider end on the filling position A side The edges on both sides from the end to the narrow end on the side of the sealing position B are sloped so as to gradually narrow the distance therebetween. The planar shape of such a cam plate 52 is a so-called paddle shape.

The lower widthwise moving member 40 is provided with a support post 56 projecting upwardly through an elongated guide hole 54 formed in the upper widthwise moving member 42 so as to extend in a direction perpendicular to the guide rail 12. It is fixed at a position closer to the conveying means 18 than the plate 52.
A column 58 that projects upward is also fixed to the upper widthwise moving member 42 at a position farther from the conveying means 18 than the cam plate 52. These pair of pillars 5
6 and 58 are arranged on a straight line extending in a direction perpendicular to the guide rail 12, and a pair of support columns 5
A cam driven wheel 60 is attached to each of 6 and 58 at the same height as both side edges of the cam plate 52 so as to be rotatable horizontally with respect to the cam plate 52. The upper ends of each of the pair of support columns 56 and 58 extend above the upper surface of the cam plate 52, and at these upper ends there are provided, for example, for biasing the pair of support columns 56 and 58 toward each other. Both ends of a biasing means 62, such as a tension coil spring, are connected.

The end of the upper width direction moving member 42 on the side farther from the conveyance means 18 extends to a position farther from the conveyance means 18 than the end of the lower width direction movement member 40 on the side farther from the conveyance means 18, This conveyance means 18
The end of the upper width direction moving member 42 on the side farthest from the transport means 18 is arranged so as to face the end of the lower width direction movement member 40 on the side far from the transport means 18 in the direction orthogonal to the guide rail 12 of the transport means 18. An air cylinder pusher 64 (not shown) is provided.

In the degassing device according to the embodiment of the present invention configured as described above, which is used in a liquid filling and sealing device, the liquid container 20 having an open top moves intermittently on the conveying means 18 at a predetermined speed. One end 35 of the drive lever 36 of the pressing member driving means 26 of the deaerator is not driven by a motor (not shown) until the liquid filling operation position A and the sealing operation position B are reached. During this time, the longitudinally moving member 32 is located below the wide end of the cam plate 52, and the pair of widthwise moving members 4
A pair of cam driven wheels 5 supported on
6 are located on both side edges of the wide end of the cam plate 52, as shown in FIG. As a result, the pair of pressing members 24 attached to the tips of the pair of width direction moving members 40 and 42 can move the liquid container 24 between the liquid filling operation position A and the sealing operation position B on the conveying means 18. It is placed at a distant position away from the movement trajectory of the robot.

A liquid container 20 with an open top serves as a transport means 18.
When a predetermined position between the liquid filling work position A and the sealing work position B is reached, the drive lever 36 of the pressing member driving means 26 of the deaerator is driven by a motor (not shown), and the first In the figure, rotation starts counterclockwise at a predetermined speed.
Such rotation of the drive lever 36 causes a movement of the longitudinal displacement member 32 on the guide member 30 of the push member drive means 26. Here, the longitudinal moving member 32 moves the liquid container 20 at substantially the same speed as the moving speed of the liquid container 20 on the conveying means 18.
The pair of cam driven wheels 56 that roll on both side edges of the cam plate 52 move in the same direction as the moving direction of the cam plate 52, and the distance between the two side edges gradually decreases from the wide area of the both side edges. The pair of cam driven wheels 56 move toward the approaching area, and as the distance between the two side edges gradually approaches each other in the approaching area, the conveying means 1 is moved by the urging force of the urging means 62.
8 gradually approaches in a direction perpendicular to the guide rail 12 of No. 8. The approach of the pair of cam driven wheels 56 on both side edges of the cam plate 52 is possible because the struts 56 and 58 for the pair of cam driven wheels 56 are fixed to the pair of widthwise moving members 40 and 42. , causes a relative movement of the pair of widthwise moving members 40, 42 on the longitudinally moving member 32 in a direction orthogonal to the guide rail 12 of the conveying means 18, as a result of which the pair of widthwise moving members 40, 42 A pair of pressing members 24 at the tips of 40 and 42 also move in a direction perpendicular to the guide rail 12 so as to reduce the distance between them.

As shown by the two-dot chain line in FIG.
While sealing work is being performed on the liquid container 20 at the sealing work position B on the upper part of the sealing work position B,
Immediately before the liquid container 20, which had been temporarily stopped, finishes sealing the liquid container 20 in front of it at the sealing work position B and starts moving to the sealing work position B, this sealing work is performed. A pair of pressing members 24 that have moved in a direction perpendicular to the guide rail 12 come into light contact with the side wall of the liquid container 20 one position before position B so that the distance between them approaches each other.

Note that the positions of the pair of pressing members 24 indicated by the two-dot chain line at the top in FIG. 3 are the separated positions of the pair of pressing members 24 shown in FIG.

While the liquid container 20, whose side walls are lightly contacted by the pair of pressing members 24, moves at a predetermined speed from the position one position before the sealing operation position B to the sealing operation position B, the longitudinal direction moving member 32 also moves. Further, it moves in the same direction as the moving direction of the liquid container 20 at substantially the same speed as the moving speed of the liquid container 20 on the conveying means 18, and along with this, the pair of cam driven wheels 56 also move on both side edges of the cam plate 52. As the distance between the two side edges in the approach area gradually approaches each other, the biasing force of the biasing means 62 causes the two edges to further approach each other. A pair of cam driven wheels 56 on both side edges of the cam plate 52
The above further approach causes the pair of pressing members 24 to further approach each other, and the pair of pressing members 24
This further approach of 4 causes a curvature of the side wall of the liquid container 20 in the sealing position B of the conveying means 18, as shown in solid lines in FIG.

At this time, the pair of pressing members 24 intersect with the locus of movement of the liquid container 20 on the conveying means 18 from the liquid filling operation position A to the sealing operation position B. The position is a position where the pair of pressing members 24 are close to each other.

The mutual approach distance of the pair of pressing members 24 is such that just before the liquid container 20 reaches the sealing operation position B, the pair of cam driven wheels 60 are placed in narrow areas on both side edges of the cam plate 52 as shown by solid lines in FIG. It is kept constant by reaching as shown.

The curvature of the side wall of the liquid container 20 reduces the volume of the space between the surface of the liquid in the liquid container 20 and the gap (opening) 22 at the upper end of the side wall of the liquid container 20.
That is, the volume of the gas contained in the liquid container 20 is reduced (degassed).

The curvature of the side wall of the liquid container 20 caused by the pair of pressing members 24 increases as the liquid container 20 moves from one position before the sealing operation position B to the sealing operation position B. The surface of the liquid also gradually rises during the movement of the liquid container 20. This gradual rise in the surface of the liquid reliably prevents the liquid from splashing out of the liquid container 20. Therefore, when the side wall of the liquid container 20 is bent by the pair of pressing members 24, the liquid in the liquid container 20 does not adhere to the inner surface of the area near the gap 22 at the upper end of the side wall of the liquid container 20, so that the sealing operation can be performed easily. At position B, the inner surface of the upper end of the side wall of the liquid container 20 in the vicinity of the gap 22 is tightly adhered by thermal welding.

When the pair of pressing members 24 are arranged at close positions as shown by solid lines in FIG. Pusher 64 of an air cylinder (not shown) at the end far from the conveying means 18
is in contact with.

The above-described curvature of the side wall of the liquid container 20 caused by the pair of pressing members 24 causes the side wall of the liquid container 20 at the sealing position B to be bent even after the liquid container 20 reaches the sealing position B on the conveying means 18. This is maintained for a predetermined period of time until the sealing operation of the gap 22 at the upper end is completed.

After the predetermined time period has elapsed, the pusher 64 of the air cylinder (not shown) first protrudes to move the pair of width direction moving members 40, 4.
2 resists the urging force of the urging means 62 and moves the pair of pressing members 24 from the approach position shown in solid lines in FIG.
The longitudinal moving member 32 immediately moves from the vicinity of the sealing operation position B as shown in solid lines in FIG. 3 to the liquid filling operation position A as shown in solid lines in FIG. 1. Return to the vicinity.
Pusher 6 of the air cylinder (not shown)
4 returns to the retracted position, and the pair of pressing members 24 are kept in the separated position shown by solid lines in FIG. This is done by contact.

The pressing member driving means 26 repeats the above-described operation, and moves the top of the conveying means 18 to the liquid filling work position A.
A pair of pressing members 24 are applied to the liquid container 18, which moves at a predetermined speed from 1 to 2, until it reaches the sealing position B. By pressing against the side wall, the volume of the space between the surface of the liquid in the liquid container 20 and the gap (opening) 22 at the upper end of the side wall of the liquid container 20 is reduced. That is, the volume of the gas contained in the liquid container 20 is reduced (degassed).

(Effects of the invention) As detailed above, the deaerator according to this invention used in a liquid filling and sealing device is capable of filling liquid containers sequentially conveyed by a conveying means with liquid through the openings of the liquid containers. Used in a liquid filling and sealing device that seals the opening of a liquid container by heat welding: Liquid filling work position where liquid is filled from the opening into the liquid container and sealing work where the opening is sealed by heat welding. The liquid container is arranged on both sides of the movement locus so as to face the movement locus of the liquid container on the conveying means between the positions, and the approach position approaches each other until intersecting the movement locus, and the approach position moves away from each other until it separates from the movement locus. a pair of pressing members that are movable between the liquid filling position and the sealing position; movement of the liquid container on the conveying means from the liquid filling position to the sealing position; A pair of pressing members are moved facing a pair of diametrically opposite side walls of a liquid container at approximately the same speed as the above-mentioned speed, and a pair of pressing members are moved at substantially the same speed as lightly contact a pair of mutually opposite side walls of the liquid container, and then reduce the distance between the pair of pressing members until the liquid container on the conveying means reaches the sealing position. Gradually shorten the liquid containers diametrically opposite one another
Pressing member driving means for gradually increasing the pressing force of the pair of pressing members against the pair of side walls until the liquid container on the conveying means reaches the liquid filling work position to the sealing work position; It is said that
Therefore, during deaeration work before sealing the opening of a liquid container that is sent to a position where the sealing work is performed after being filled with liquid, the liquid in the liquid container ripples inside the liquid container. It is possible to prevent the area near the opening from getting wet, and as a result, there is no possibility of sealing failure when sealing the opening of the liquid container by thermal welding.

[Brief explanation of the drawing]

FIG. 1 is a plan view schematically showing a state in which a pair of pressing members are arranged at separated positions in a degassing device according to an embodiment of the present invention used in a liquid filling and sealing device; FIG. 1 is a cross-sectional view schematically showing a cross section taken along the line - in FIG. 1; FIG. 3 is a cross-sectional view showing a position where a pair of pressing members are close to each other in the deaerator of the liquid filling and sealing device shown in FIG. FIG. 10... Support column, 12... Guide rail, 14...
... Chain with rollers, 16 ... Liquid container drive plate, 18 ... Conveying means, 20 ... Liquid container, 22
... Gap (opening), 24 ... Pressing member, 26 ...
Pressing member driving means, 28... Support column, 30... Guide member, 32... Longitudinal direction moving member, 34... Roller, 35... One end, 36... Drive lever, 38...
... Stop, 40, 42 ... Width direction moving member, 4
4, 46... Groove with rollers, 48... Width direction movement guide member, 50... Anti-lifting roller, 52... Cam plate, 53... Fixing means, 54... Guide hole, 5
6, 58... Support column, 60... Cam driven vehicle, 62...
...biasing means, 64... pusher.

Claims (1)

[Claims for Utility Model Registration] This device is used for a liquid filling and sealing device that seals the opening of the liquid container by thermal welding after filling liquid containers sequentially transported by a transporting means with liquid through the opening of the liquid container. The movement trajectory is opposite to the movement trajectory of the liquid container on the conveying means between a liquid filling operation position where liquid is filled into the liquid container from the opening and a sealing operation position where the opening is sealed by heat welding. a pair of pressing members disposed on both sides of the moving trajectory, and provided movably between an approaching position where the pressing members approach each other until intersecting the movement trajectory and a separated position where they move away from each other until they separate from the movement trajectory; Between the liquid filling work position and the sealing work position, a pair of pressing members is applied to one of the mutually opposite sides of the liquid container at approximately the same speed as the moving speed of the liquid container on the conveying means from the liquid filling work position to the sealing work position. while moving the liquid container while facing the pair of side walls, and lightly contacting the pair of pressing members with the pair of mutually opposite side walls of the liquid container before the liquid container reaches the sealing work position on the conveying means, Thereafter, until the liquid container on the conveying means reaches the sealing operation position, the distance between the pair of pressing members is gradually shortened, and the pair of pressing members are pressed against the pair of opposite side walls of the liquid container. A liquid filling and sealing device comprising: pressing member driving means for gradually increasing the pressing force of the pressing member until the liquid container on the conveying means reaches the liquid filling work position to the sealing work position; Deaerator.