JP7377506B1 - Spout holding device and packaging container filling machine - Google Patents

Abstract

[Problem] The present invention provides a spout holding device that holds the spout of a packaging container equipped with a spout so that it does not move, and that can confirm that a cap is tightened to a desired state (normally) on the spout of a packaging container equipped with a spout. A packaging container filling machine including a spout with a mechanism is provided. SOLUTION: A spout holding device 1 of the present invention is a device for holding a spout of a packaging container. The first holder 11 includes a fitting part 111 into which at least a portion of the lower part of the flange of the spout fits, and a pair of second holders 13 disposed on the upper surface of the first holder 11. The second holder 13 includes a flange pressing portion 131 having an arcuate shape in plan view, and a longitudinal section of the flange pressing portion 131 along the diameter of the arc is tapered toward an end portion 1313. [Selection diagram] Figure 1

Description

The present invention relates to a packaging container filling machine equipped with a spout holding device and a spout.

BACKGROUND ART Conventionally, as a packaging container for containing a liquid or the like, a container whose main body is made of a film-like resin or the like and whose opening is provided with a spout has been used. The lower end of the spout is fixed to an opening of a film-like main body, the upper end of the spout is an opening, and a cap or the like is attached to the opening of the spout. Containers for the liquid and the like are sometimes stored in outer boxes such as cardboard boxes for transportation and storage, and one example is a bag-in-box.

After a liquid is injected into a packaging container equipped with a spout, when a cap is attached to the upper end of the spout, force is applied to the spout in the direction of rotation of the cap or in a downward direction, causing the spout itself to rotate. being pushed downwards. As a result, force in the rotational direction and downward direction is also applied to the film-like main body near the lower end of the spout. Since the film-like main body has lower strength than the spout, there is a problem that tears or cracks may occur in the main body, and the filled liquid may leak out of the container. For example, when tightening a screw-type cap, the spout moves in the tightening direction of the cap, and a strong force is applied to the main body near the lower end of the spout in the same direction as the spout, twisting the main body and causing the spout to tighten. There is a possibility that a part of the product may come off from the main body, or the main body may be torn or cracked.

Further, if the opening of the spout is not sealed with a cap, there is a problem that the liquid may spill from the opening of the spout.

Patent Document 1 discloses a method for preventing fitting misalignment between the spout and the cap that occurs when a flexible inner bag for a bag-in-box equipped with a spout is filled with liquid and the cap is fitted to the spout after filling. Although spout retention devices and methods are disclosed, they only fix the spout position and do not prevent the spout from rotating or moving downward. Therefore, the problem that tears or cracks may occur in the main body of the film-like body and the filled liquid may leak out of the container remains unsolved. Furthermore, there is no mention of means for checking the tightness of the cap of the packaging container.

JP2009-298444

The present invention provides a packaging container filling machine comprising a spout holding device for holding the spout of a packaging container provided with a spout so that the spout does not move, and a means for checking the tightness state of the cap of the packaging container provided with the spout.

The present invention for solving the above problems has the following contents.

The spout holding device of the present invention is a device that holds a spout during a cap tightening process of a packaging container provided with a spout, and comprises:
a first holder including a fitting portion into which at least a portion of the bottom surface below the flange of the spout fits;
a pair of second holders disposed on the upper surface of the first holder,
The pair of second holders include a flange pressing portion having an arcuate shape in plan view,
The longitudinal section of the flange pressing part is tapered toward the end,
The pair of second holding bodies are openable and closable,
During the cap tightening step, the flange is held between the first holder and the closed second holder .

The packaging container filling device of the present invention includes the spout holding device, an injection device, and a cap tightening device.

The packaging container filling device of the present invention includes a light emitting sensor and a light receiving sensor on both sides of the capping device in the horizontal direction,
The cap tightening device includes a gap through which light emitted from the light projection sensor passes.

The cap tightening device includes a torque sensor.

The method for filling a packaging container with a spout according to the present invention includes a spout holding step in which the flange of the packaging container with a spout is held between the first holding body and the second holding body of the spout holding device to hold the spout. ,
an injection step of injecting the contents into the packaging container;
and a cap tightening step of tightening a cap onto the spout of the packaging container.

The method for filling a packaging container with a spout according to the present invention includes a spout holding step in which the flange of the packaging container with a spout is held between the first holding body and the second holding body of the spout holding device to hold the spout. ,
an injection step of injecting the contents into the packaging container;
a cap tightening step of tightening a cap onto the spout of the packaging container;
The method may further include a cap tightening confirmation step of confirming the tightening state of the cap.

The spout holding device of the present invention is capable of holding the spout of a packaging container equipped with a spout, and prevents tears and cracks from occurring in the film-like main body of the packaging container, and prevents the filled liquid from leaking from the packaging container. Make sure not to. The packaging container filling device is equipped with a means for checking the tightness of the spout cap of a packaging container equipped with a spout. Packaging containers can be eliminated, and packaging containers that do not leak liquid from the spout or the vicinity of the spout can be selected.

It is a top view which shows an example of the state in which the second holding body of the spout holding device of this invention is closed. It is a front view showing an example of the state where the second holding body of the spout holding device of the present invention is closed. It is a back view showing an example of the state where the second holding body of the spout holding device of the present invention is closed. It is a right side view showing an example of the state where the second holding body of the spout holding device of the present invention is closed. It is a left side view showing an example of the state where the second holding body of the spout holding device of the present invention is closed. FIG. 2 is a sectional view taken along line AA of the spout holding device of the present invention. It is a top view which shows an example of the state where the 2nd holding body of the spout holding device of this invention is open. It is a front view showing an example of the state where the second holding body of the spout holding device of the present invention is open. It is a right side view showing an example of the state where the second holding body of the spout holding device of the present invention is open. It is a left side view showing an example of the state where the second holding body of the spout holding device of the present invention is open. It is a top view which shows an example of the state which closed the second holding body of the spout holding device of this invention, and held the spout. It is a front view which shows an example of the state which closed the second holding body of the spout holding device of this invention, and held the spout. It is a right side view which shows an example of the state in which the second holding body of the spout holding device of this invention is opened and the spout is inserted. It is a right side view showing an example of the state where the second holding body of the spout holding device of the present invention is closed and the spout is held. FIG. 3 is a BB sectional view of the spout holding device of the present invention. FIG. 3 is an enlarged sectional view showing an example of a state in which the flange pressing portion of the spout holding device of the present invention is pressing the flange. FIG. 1 is a front view showing an example of a packaging container filling machine of the present invention. FIG. 1 is a right side view showing an example of a packaging container filling machine of the present invention. FIG. 1 is a left side view showing an example of a packaging container filling machine of the present invention. It is a front view showing an outline of a filling method using a packaging container filling machine of the present invention. FIG. 2 is a partial cross-sectional view showing an example of a situation in which a cap is tightened by a cap tightening device of a packaging container filling machine of the present invention. A partially enlarged view schematically illustrating the light emitting sensor, light receiving sensor, cap holding means, cap, and spout of the cap tightening device of the packaging container filling machine of the present invention when the cap is in the desired tightened state (normal). FIG. A partially enlarged view schematically showing the light emitting sensor, light receiving sensor, cap holding means, cap, and spout of the cap tightening device of the packaging container filling machine of the present invention when the cap is not in the desired tightened state but at an angle. FIG. FIG. 2 is a partially enlarged sectional view schematically showing a light emitting sensor, a light receiving sensor, a cap holding means, and a spout of the cap tightening device of the packaging container filling machine of the present invention when there is no cap.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Examples of embodiments of the present invention will be described below with reference to the drawings. It should be noted that the present invention is not limited to the following embodiments.

The spout holding device 1 of the present invention is a device that holds the spout 91 during the process of capping a packaging container provided with a spout. It includes a first holding body 11 and a pair of second holding bodies 13 disposed on the upper surface of the first holding body 11. The first holder 11 includes a fitting portion 111 into which at least a portion of the bottom surface below the flange 915 of the spout 91 can fit. The second holding body 13 includes a flange pressing portion 131 having an arcuate shape in plan view (FIGS. 1 to 10). The longitudinal section of the flange pressing portion 131 along the diameter of the arc is tapered toward the end portion 1313 (FIGS. 1, 6, 15, 16).

The first holder 11 includes a fitting portion 111 into which at least a portion of the neck portion 917 below the spout 91 fits. As an example, the fitting portion 111 has a substantially semicircular shape having an outer diameter that is approximately the same as the outer diameter of the neck portion 917 located below the flange 915 . The first holding body 11 may include a moving part 113 that moves the neck part 917 to the fitting part 111 (FIGS. 1, 4, 7, and 9).

The pair of second holders 13 are provided with flange pressing portions 131 and are arranged horizontally on the upper surface of the first holder 11 . As an example, the second holding body 13 includes a rotation means 133. The pair of second holders 13 are opened and closed by the rotation means 133. With the second holding body 13 closed, the flange pressing portion 131 holds the flange 915 of the spout 91 (FIGS. 1, 4, 7, 9, 11 to 15).

The flange pressing portions 131 are provided in opposing portions of the pair of second holders 13 in a concave arc shape, respectively. As an example, the diameter of the circular arc of the flange pressing part 131 is larger than the outer diameter of the cylindrical part 913 of the spout 91 and smaller than the outer diameter of the flange 915. A longitudinal cross section of the flange pressing portion 131 along the diameter of the arc (for example, the A-A cross section in FIG. 1) has a tapered shape that becomes thinner toward the end portion 1313. For example, the upper surface 1315 of the flange pressing part 131 is horizontal, and the lower surface 1317 is sloped upward toward the end 1319 (FIGS. 1, 6, 15, and 16).

The rotating means 133 is not particularly limited as long as it is a means for opening and closing the flange pressing portions 131 of the pair of second holders 13. As an example, each of the pair of second holding bodies 13 is provided with a joint portion 1331. The joint portion 1331 passes through the second holding body 13 and the first holding body 11, and the second holding body 13 rotates in the horizontal direction about the joint portion 1331. By rotating the pair of second holders 131, the pair of flange pressing portions 131 are opened and closed (FIGS. 1 to 4, FIGS. 7 to 9).

The second holding body 13 may be provided with an opening/closing mechanism 15 for opening and closing the flange pressing part 131. As an example, one end of the first connecting means 161 is provided at the end of the second holding body 13 opposite to the flange pressing part 131 using the first joining part 151 . The first joint portion 151 passes through the first connecting means and the second holder 13 and is inserted into the arc-shaped through hole 167 of the first holder. The other end of the first connecting means 161 is provided with a second joint 153 at one end of the second connecting means 163 . The second joint portion 153 passes through the first connecting means 161 and the second connecting means 163 and is inserted into the substantially linear hole 169 of the first holding body. The other end of the second connecting means 163 is provided with a substantially middle portion of the third connecting means 165 using a third joint 155 . The third joint portion 155 passes through the second connecting means 163 and the third connecting means 165. One end of the third connecting means is joined to the first holder 11 by the fourth joint. The other end of the third connecting means is provided with a gripping part 17 (FIGS. 1 and 7).

When the grip portion 17 is moved in the direction of the flange pressing portions 131, the pair of flange pressing portions 131 are closed. When the grip portion 17 is moved in the direction opposite to the flange pressing portions 131, the pair of flange pressing portions 131 are brought into an open state (FIGS. 1 and 7).

Next, how to use the spout holding device 1 will be explained.

Open the flange pressing portion 131 of the second holding body 13 of the spout holding device 1. As an example, the flange pressing part 131 is opened by moving the grip part 17 in the opposite direction to the flange pressing part 131. Next, the lower neck portion 917 of the spout 91 is moved by the moving portion 113 of the first holder 11 so that the lower surface of the flange 915 of the spout 91 of the packaging container 9 comes into contact with the upper surface of the first holder 11. The portion 917 is fitted into the fitting portion 111. Next, the flange pressing portion 131 of the second holder 13 is closed. As an example, the flange pressing part 131 is closed by moving the grip part 17 in the direction of the flange pressing part 131 (FIGS. 1, 7, 11 to 16).

The neck portion 917 of the flange 915 is fitted into the fitting portion 111 of the first holding body 11, thereby restricting movement of the spout 91 in the horizontal direction and the vertical direction. Therefore, when filling the contents from the opening 911 of the spout 91, it is possible to prevent the injection nozzle 511 for injecting the contents from being misaligned with the opening 911 of the spout 91. Furthermore, it is possible to prevent the cap 95 and the cylindrical portion 913 from being misaligned when the cap 95 is tightened. However, when holding the spout 91 using the first holding body 11, even if the neck part 917 is fitted into the fitting part 111, it is not possible to restrict the movement of the spout 91 in the horizontal rotational direction. .

A lower end portion of the spout 91 is fixed to an opening of a main body portion 93 made of a film-like resin or the like. When the filling of the contents into the main body part 91 is completed, the cap 95 is disposed on the cylindrical part 913 of the spout 91. When tightening the cap, the spout 91 may rotate or move downward. As an example, in the case of a screw-type cap in which the cylindrical portion 913 is provided with a male thread 919, a horizontal rotational force is applied to the spout 915. When a horizontal rotational force is applied to the spout 915, most of the main body part 93 does not move due to the weight of the filler, so only the horizontal rotational force is applied to the main body part 93 near the spout 91 and the main body part 93 is twisted. Since the strength of the main body portion 93 is lower than that of the spout 91, tears or cracks may occur in the main body portion 93 near the spout 91.

When the flange pressing portion 131 of the second holding body 13 closes, the lower surface 1317 of the flange pressing portion 131 and the upper surface near the outer periphery of the flange 915 come into contact. Since the vertical cross section of the flange pressing part 131 along the diameter of the arc is tapered toward the end 1313, the lower surface 1317 of the flange pressing part 131 can press the vicinity of the outer periphery of the flange 915 downward. I can do it. For example, the upper surface 1315 of the flange pressing part 131 is horizontal, and the lower surface 1317 is sloped upward toward the end 1319, so that the flange 915 can be efficiently pressed downward. The flange 915 is pressed from above by the flange pressing portion 131 and is sandwiched between the flange 915 and the first holding body 11, and is restricted from horizontal rotational movement and downward movement. As a result, the flange 915 restricts horizontal rotational movement and downward movement that occur when tightening the cap, preventing twisting of the main body 93 near the spout 91, and preventing the main body from twisting. 93 will no longer be torn or cracked (FIGS. 15 and 16).

A filling device 3 for a packaging container 9 with a spout, which includes a spout holding device 1, an injection device 5, and a capping device 7, will be described (FIGS. 17 to 19).

The filling device 3 includes a spout holding device 1, an injection device 5, and a cap tightening device 7. As an example, it includes a pedestal 31 on which the injection device 5, the cap tightening device 7, etc. are arranged, a packaging container installation stand 33 on which the packaging container 9 is placed, a motor 35 for moving the injection device 5, the cap tightening device 7, etc. Figures 17-19).

The spout holding device 1 is provided above the packaging container 9 and below the injection device 5 and the capping device 7. As an example, the spout holding device 1 is fixed to a spout holding device fixing base 37 (FIGS. 17 to 19).

The injection device 5 is a device for injecting contents into the packaging container 9. As an example, it includes an injection device moving means for moving the injection device 5 in the vertical direction, and an injection means 51 for injecting the contents into the packaging container 9. Preferably, a vacuum means 53 is provided to suck the air inside the packaging container 9 before injecting the contents to facilitate injecting the contents (FIGS. 17 to 19).

Although not shown, when injecting the contents into the packaging container 9, the injection device movable means 51 descends to the vicinity of the opening 911 of the packaging container 9, and when the injection of the contents is finished, it returns to its original position. There is no particular limitation as long as the means is used to rise to the position, and commonly used means can be used (FIGS. 20(1) to (3)).

The injection means 51 is not particularly limited as long as it has the function of injecting the contents into the packaging container 9, and any commonly used injection means can be used. As an example, an injection nozzle 511 for injecting contents into the packaging container 9 and a contents moving means 513 for sending the contents to the injection nozzle 511 are provided. The content moving means 513 is not particularly limited, and any commonly used means can be used, and as an example, the content is moved through a tube or the like (FIGS. 17 to 19).

The vacuum means 53 is not particularly limited as long as it makes it easier to inject the contents by suctioning the air inside the packaging container 9 before injecting the contents, and any commonly used means can be used. be able to. As an example, the injection nozzle 51 is equipped with a vacuum tube, and a means such as degassing with a suction pump or the like is used (FIGS. 17 to 19).

The cap tightening device 7 is a device that tightens the cap 95 on the opening 911 of the spout 91 after filling the packaging container 9 with the contents. As an example, the cap tightening device 7 includes a cap tightening device movable means 75 for moving the cap tightening device 7 in the vertical direction, a cap holding means 71 for holding the cap 95, and a rotating means 73 for rotating the cap holding means 71. (Figures 17 to 19).

The cap tightening device movable means 75 is a means by which the cap holding means 51 descends to the vicinity of the opening 911 of the packaging container 9 when tightening the cap onto the packaging container 9, and rises to the original position when the cap is tightened. If there is, there is no particular limitation, and commonly used means can be used (FIGS. 20 (4) to (6)).

The cap holding means 71 is not particularly limited as long as it can hold the cap 95 and squeeze the cap into the opening 911 of the spout 91. For example, it may include a chuck 711 holding the cap 95 and a chuck holder 713. and a slide case 715. The chuck holder 713 includes a chuck 711 below. A slide case 715 is provided outside the chuck holder 713 (FIG. 21).

When the cap 95 is of a screw type, for example, the cap holding means 71 is connected to the rotating means 73. The rotating means 73 is not particularly limited as long as it rotates the cap holding means 71, and a motor 733 is used to rotate the rotating shaft 731 connected to the cap holding means (FIGS. 17 to 19).

As an example, the filling device 3 for packaging containers with a spout includes a light emitting sensor 81 and a light receiving sensor 83 on both sides of the capping device 7 in the horizontal direction. A gap 851 is provided through which the light 87 emitted from the portion 811 passes. Light 87 emitted from the light projecting section 811 of the light projecting sensor 81 passes through the gap 851 and is received by the light receiving section 831 of the light receiving sensor 83 . The light emitting sensor 81 and the light receiving sensor 83 are arranged at positions where the cap 95 passes through the gap 851 when the cap 95 is in a desired state (normal). As an example, the gap 851 is provided at the outer periphery of the light transmitting portion 85 of the chuck holder 713. The light emitting sensor 81 and the light receiving sensor 83 are fixed to the cap device movable means 75 and are arranged at a constant distance from the light transmitting section 84 (FIGS. 21 to 24).

Light 87 emitted from the light emitting part 811 of the light emitting sensor 81 passes through the gap 851 and is received by the light receiving part 831 of the light receiving sensor 83 when the cap 95 is tightened to a desired state (normal). to be placed. After cap tightening is completed, if the light receiving sensor receives light 87, the cap tightening is in the desired state (normal) (Fig. 22), and if the light receiving sensor 83 cannot receive light 87, the cap tightening is abnormal. This results in some defective products (Figures 23 and 24).

If the cap 95 is of a screw type, as another example, the cap tightening device 7 includes a torque sensor. Although the torque sensor is not shown, as an example, it is provided in the motor 733 that rotates the rotating shaft 731. The torque sensor allows the rotation speed of the cap 95 to be checked when the cap 95 is tightened. By setting in advance the number of revolutions when the cap tightening is in a desired state (normal), if the number of revolutions falls outside the set value range, the product is considered defective due to an abnormality in the cap tightening.

Next, a method for filling a packaging container using the spout holding device 1 of the present invention will be described. A spout holding process in which the spout 91 of the packaging container 9 with a spout is held in the spout holding device 1, an injection process in which the contents are injected into the packaging container 9, and a cap tightening process in which the cap 95 is tightened on the spout 91 of the packaging container 9. Be prepared. As an example, a cap tightening confirmation step is further provided to confirm whether the cap 95 is tightened in a desired state (normally) (FIG. 20).

The spout holding process is a process of causing the spout holding device 1 to hold the spout of the packaging container 9 with a spout. The flange pressing portion 131 of the second holding body 13 of the flange holding device 1 is brought into an open state. The method of opening and closing the flange pressing portion 131 is not particularly limited, and any method may be used, whether manual or automated. As an example, the opening/closing mechanism 15 is provided and the grip part 17 is moved in the opposite direction to the flange pressing part 131 to open the flange pressing part 131 (FIG. 7).

Next, the neck portion 917 located below the flange 915 of the packaging container 9 is fitted into the fitting portion 111 by moving the moving portion 113 of the first holding body 11 of the spout holding device 1 . Next, the flange pressing portion 131 of the second holding portion 13 of the spout holding device 1 is closed (FIG. 11(1)).

The injection process is a process of injecting the contents into the packaging container 9. Desired contents are injected from the opening 911 of the spout 91 using the injection device 5 . As an example, the injection device 5 is moved to a desired position using an injection device moving means or the like, and the desired contents are injected into the packaging container 9 from the injection nozzle 511. Preferably, before injecting the contents, the air inside the packaging container 9 is sucked out using the vacuum means 53 (FIG. 11(2)). When the injection of the contents is finished, the injection device 5 moves upward (FIG. 11(3)).

The cap tightening process is a process of tightening the cap 95 to the spout 91 of the packaging container 9. After the cap tightening device 7 is disposed above the spout 91, the cap tightening device 7 is moved downward to a desired position using a cap tightening device moving means or the like (FIG. 11(4)). The cap 95 held by the cap holding means 71 is moved downward, and the cap 95 is tightened in the opening 911 of the spout 91 (FIG. 11(5)). After tightening the cap 95, the cap tightening device 7 is moved upward to a desired position using a cap tightening device moving means or the like (FIG. 11(6)).

When the cap 95 is of a screw type, for example, the slide case 715 and the rotating means 73 are connected. The rotating means 73 is not particularly limited as long as it rotates the cap holding means 71, and the screw type cap 95 is tightened by rotating the rotating shaft 731 connected to the cap holding means using the motor 733. be able to.

The cap tightening confirmation process is a process of confirming whether the cap 95 is tightened in a desired state (normally).

FIG. 21 (1A) is a left sectional view before the cap 95 is tightened, and FIG. 21 (1B) is a left sectional view before the cap 95 is tightened. (2A) is a left sectional view when the cap 95 reaches the opening of the spout 9, and (2B) is a left sectional view when the cap 95 reaches the opening of the spout 9. (3A) is a left sectional view when the cap 95 is tightened in a desired state (normal), and (3B) is a left sectional view when the cap 95 is tightened in a desired state (normal).

FIG. 22A is an enlarged cross-sectional view of the portion extending from the spout 91 to the light emitting sensor 81 and the light receiving sensor 83 when the cap 95 is tightened in a desired state (normal). FIG. 22B is an enlarged cross-sectional view of the light emitting sensor 81, the light receiving sensor 83, and the gap 851 when the cap 95 is tightened in a desired state (normal). FIG. 23A is an enlarged cross-sectional view of the portion extending from the spout 91 to the light emitting sensor 81 and the light receiving sensor 83 when the cap 95 is tightened diagonally. FIG. 23B is an enlarged cross-sectional view of the light emitting sensor 81, the light receiving sensor 83, and the gap 851 when the cap 95 is tightened diagonally. FIG. 24A is an enlarged cross-sectional view of the portion extending from the spout to the light emitting sensor 81 and the light receiving sensor 83 without the cap 95. FIG. 24B is an enlarged cross-sectional view of the light emitting sensor 81, the light receiving sensor 83, and the gap 851 without the cap 95.

As an example, a process using the light 87 emitted from the light projecting section 811 of the light projecting sensor 81 will be described (FIGS. 21 to 24). The packaging container filling device 3 with a spout includes a light emitting sensor 81 and a light receiving sensor 83 on both sides of the capping device 7 in the horizontal direction. A gap 851 is provided through which the emitted light 87 passes. Light 87 emitted from the light projecting section 811 of the light projecting sensor 81 passes through the gap 851 and is received by the light receiving section 831 of the light receiving sensor 83 . The light emitting sensor 81 and the light receiving sensor 83 are arranged at positions where the cap 95 passes through the gap 851 when the cap 95 is in a desired state (normal). As an example, the gap 851 is provided at the outer periphery of the light transmitting portion 85 of the chuck holder 713. The light emitting sensor 81 and the light receiving sensor 83 are fixed to the cap device movable means 75 and are arranged at a constant distance from the light transmitting section 84 (FIGS. 21 to 24).

The cap tightening confirmation process will be explained along with the process of tightening the cap 95. As an example, first, the cap 95 is attached to the chuck 711. At this time, the light 87 emitted from the light projecting section 811 of the light projecting sensor 81 hits the chuck holder 713 below the gap 851 and does not pass through the gap 851 (FIGS. 21 (1A) and (1B)).

Next, the cap tightening device 7 is lowered by the cap tightening movable means 75 to a position near where the cap 95 can seal the spout 91 . The chuck holder 713 slides upward inside the slide case 715 to a position where the cap 95 contacts the upper end of the spout 95. At this time, the light 87 emitted from the light projecting section 811 of the light projecting sensor 81 hits the chuck holder 713 below the gap 851 and does not pass through the gap 851 (FIGS. 21 (2A) and (2B)).

Finally, the cap 95 is tightened onto the spout 91. As an example, the chuck 711 and the chuck holder 713 are rotated by the rotating means 73, so that the cap 95 is closed. When tightening the cap 95, the chuck holder 713 slides downward inside the slide case 715. At this time, the light 87 emitted from the light projecting section 811 of the light projecting sensor 81 passes through the gap 851 of the chuck holder 713 (FIGS. 21 (3A) and (3B)).

Light 87 emitted from the light emitting part 811 of the light emitting sensor 81 passes through the gap 851 and is received by the light receiving part 831 of the light receiving sensor 83 when the cap 95 is tightened to a desired state (normal). (Figure 22). If the cap 95 is tilted, the chuck holder 713 will be higher than the desired (normal) position X, and the light transmitting portion 85 will also be higher than the desired (normal) position X. Since the light emitting sensor 81 and the light receiving sensor 83 are in positions where they pass through the gap 851 when the cap 95 is in the desired state (normal) position X, the light emitted from the light emitting part 811 of the light emitting sensor 81 The light 87 is emitted to a position lower than the gap 851, cannot pass through the gap 851, and the light receiving sensor 83 cannot receive the light 87 (FIG. 23).

If the cap 95 is not loaded on the chuck, the chuck holder 713 will be lower than the desired (normal) position X, and the light transmitting portion 85 will also be lower than the desired (normal) position X. Since the light emitting sensor 81 and the light receiving sensor 83 are in positions where the light passes through the gap 851 when the cap 95 is in the desired state (normal) position X, the light emitted from the light emitting part 811 of the light emitting sensor 81 is The light 87 is emitted to a position higher than the gap 851, cannot pass through the gap 851, and the light receiving sensor 83 cannot receive the light 87 (FIG. 24).

By sensing whether or not the light 87 is received by the light receiving sensor 83, it is possible to check the tightness of the cap 95. It is possible to exclude packaging containers 9 that are not equipped with any.

As another example, if the cap 95 is of a screw type, a process using a torque sensor is used. The torque sensor is provided in the motor that rotates the cap 95 when the cap 95 is tightened. First, the cap 95 and the opening 911 of the spout 91 are brought into contact with each other while the cap holding means 71 is reversed in a direction opposite to the direction in which the cap 95 is closed. The torque sensor detects the contact force between the tip of the female screw of the cap 95 and the tip of the male screw 911 of the spout 91, and the motor stops once and then rotates forward in the direction to close the cap 95. It is set to stop when the force generated when it is tightened to the desired state (normal) is applied. The number of revolutions necessary for the cap 95 to tighten to a desired state (normal) is set in advance, and if the number of revolutions at which the cap 95 rotates in the normal direction is around the set value, the cap 95 has been tightened to the desired state (normal). I understand that. If the number of rotations at which the cap 95 rotates in the normal direction is less than the set value, the cap 95 may be tilted and is not tightened to the desired (normal) state. For example, a servo motor is used to sense and control the torque sensor and rotation speed.

1 Spout holding device 11 First holding body 111 Fitting part 113 Moving part 13 Second holding body 131 Flange pressing part 1313 End part 1315 Upper surface 1317 Lower surface 133 Rotating means 1331 Joint part 15 Opening/closing mechanism 151 First joint part 153 Second Joint part 155 Third joint part 157 Fourth joint part 161 First connecting means 163 Second connecting means 165 Third connecting means 167 Arc-shaped through hole 169 Straight through hole 17 Gripping part 3 Filling device 31 Frame 33 Packaging container Installation stand 35 Motor 37 Spout holding device fixing stand 5 Injection device 51 Injection means 511 Injection nozzle 513 Contents moving means 53 Vacuum means 711
7 Cap tightening device 71 Cap holding means 711 Chuck 713 Chuck holder 715 Slide case 73 Rotating means 731 Rotating shaft 733 Motor 75 Cap tightening device movable means 81 Light projecting sensor 811 Light projecting section 83 Light receiving sensor 831 Light receiving section 85 Light transmitting section 851 Gap 87 Light 9 Packaging container 91 Spout 911 Opening 913 Cylindrical portion 915 Flange 917 Neck portion 919 Male thread 93 Main body portion 95 Cap 97 Outer box

X Desired state (normal) position

Claims (6)

A device for holding a spout during a capping process of a packaging container provided with a spout, the device comprising:
a first holder including a fitting portion into which at least a portion of the bottom surface below the flange of the spout fits;
a pair of second holders disposed on the upper surface of the first holder,
The pair of second holders include a flange pressing portion having an arcuate shape in plan view,
The longitudinal section of the flange pressing part is tapered toward the end,
The pair of second holding bodies can be opened and closed independently of the first holding body,
sandwiching the flange between the first holder and the closed second holder during the cap tightening step;
Spout retention device.
A packaging container filling device comprising: the spout holding device according to claim 1; an injection device; and a cap tightening device. A light emitting sensor and a light receiving sensor are provided on both sides of the cap tightening device in the horizontal direction,
The packaging container filling device according to claim 2, wherein the cap tightening device includes a gap through which light emitted from the light projection sensor passes. The packaging container filling device according to claim 2 or 3, wherein the cap tightening device includes a torque sensor. A spout holding step of holding a spout by holding a flange of a packaging container with a spout between the first holding body and the second holding body of the spout holding device according to claim 1;
an injection step of injecting the contents into the packaging container;
A method for filling a packaging container with a spout, comprising: tightening a cap onto the spout of the packaging container.
A spout holding step of holding a spout by holding a flange of a packaging container with a spout between the first holding body and the second holding body of the spout holding device according to claim 1;
an injection step of injecting the contents into the packaging container;
a cap tightening step of tightening a cap onto the spout of the packaging container;
a cap tightening confirmation step of confirming the tightening state of the cap;
A method for filling a packaging container with a spout.

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