JP2011195190A - Baglike container filling device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the gap between a filling nozzle 6 and an infusion bag 2 when inserting the filling nozzle 6 from the opening 2e of the infusion bag 2.SOLUTION: The infusion bag has left and right side portions 2a and 2b, and a bottom portion 2c, where both the side portions are thermally joined to the bottom portion. The upper portion of the infusion bag is thermally adhered, leaving the opening 2e at the center thereof. The infusion bag is held on both sides between a pair of grip members 4A and 4B, and sent to a filling position F. The filling nozzle 6 which can be elevated is located above the position F. The filling nozzle has a two-layer tube structure, and is connected with a medical solution supplying means 12, a vacuum means 20 and a nitrogen gas supplying means 22. First pinching parts 24a and 26a for pinching from outside the filling nozzle inserted into the infusion bag from the opening, and second pinching parts 24b and 26b outside the pinching parts 24a and 26a are provided to a pair of clamp members 24 and 26, respectively. Concaves and convexes 24c, 26c, 24d and 26d which mates with each other are formed at the boundaries between the second pinching parts and the first pinching parts, respectively.

Description

  The present invention relates to a bag-like container filling device for inserting a filling nozzle into an opening of a bag-like container such as an infusion bag for infusion, filling a liquid in the bag-like container, or supplying and discharging a gas such as nitrogen substitution. It is about.

  Various devices have been used in the past for filling and sealing contents such as liquid in a bag-like container such as an infusion bag for infusion (see, for example, Patent Document 1 or Patent Document 2). In such a bag-shaped container filling device, for example, when the liquid to be filled is a liquid that dislikes oxygen, it is required to reduce the remaining amount of oxygen in the bag-shaped container as much as possible. For this purpose, when inserting a filling nozzle into the opening of the infusion bag to perform liquid filling or nitrogen replacement, the gap between the outer peripheral surface of the filling nozzle and the inner surface of the opening of the infusion bag should be as small as possible. Is desirable.

  The invention of the method for degassing a packaging bag of a bag packaging machine described in Patent Document 1 is such that "a nozzle is inserted into the bag and the bag mouth is tensioned by a tension means to perform steam injection". . That is, an attempt is made to reduce the gap between the nozzle and the bag mouth by pulling both sides of the bag mouth with tension means (gripping claws 2a and 2b). Moreover, this patent document 1 also describes a configuration in which a flat nozzle is inserted into the packaging bag and the bag mouth is tensioned in the lateral direction.

  Further, Patent Document 2 discloses an opening of an airtight packaging bag, insertion of an article into the bag, closing of the bag, deaeration in the bag performed through an intake pipe added when the bag is closed, and a closed mouth portion. A hermetic packaging device that sequentially performs the steps of sealing is described. In the apparatus according to the present invention, when closing the mouth portion of the bag body, the intake pipe of the deaeration means is added and pressed from both sides by a pressing body made of a flexible elastic body such as sponge.

JP-A-8-169416 JP 2001-171612 A

  In the configuration of the invention described in Patent Document 1, since the nozzle is only inserted in the opening of the bag-like container (bag mouth of the packaging bag) and the bag mouth is tensioned in the lateral direction, the shape of the nozzle is flattened. Unless the device is devised, the gap between the opening of the bag-like container and the outer surface of the nozzle cannot be reduced. Moreover, even if the shape of the nozzle is flattened, it is difficult to make the gap sufficiently small.

  Further, in the configuration of the invention described in Patent Document 2, since the pressing body is pressed from both sides, the gap between the bag body and the nozzle can be reduced to some extent if the bag body is made of a soft material. However, for example, when an infusion bag or the like is thick and a relatively hard flexible material is used, it does not deform well even when pressed with a soft pressing body such as a sponge, and the gap is reduced. There was a problem that could not be done.

  The present invention has been made to solve the above-described problems, and when inserting a nozzle into an opening of a bag body to perform liquid filling or gas supply / discharge, it is ensured that there is a gap between the bag body and the nozzle. An object of the present invention is to provide a bag container filling device that can be sealed, a holding means that holds an opening formed in the bag-like container in an upward position, and a filling that can be inserted into the bag-like container. A nozzle, a liquid supply means for supplying the filling liquid into the bag-like container to the filling nozzle, a pair of clamp members arranged to be opened and closed and sandwiching the filling nozzle inserted into the opening from the outside of the opening; The pair of clamp members includes a first holding surface for holding the bag-like container by the outer peripheral surface of the filling nozzle and the clamp member, and a second holding surface for holding the bag-like container between the both clamp members. Have both these clamps A fitting portion having one convex portion and the other concave portion is formed at the boundary between the second clamping surface and the first clamping surface of the material, and the bag-like container is clamped by engaging the concave portion and the convex portion. It is what.

  The bag-like container filling device of the present invention is provided with a pair of clamp members for pressing the both sides of the bag-like container from the outside with the filling nozzle inserted into the opening of the bag-like container, and the clamping nozzle of the filling nozzle Since a concave and convex portion is formed at a position adjacent to the position where the bag-like container is pressed from the outer surface side and one side is convex and the other is concave, the gap between the filling nozzle and the bag-like container can be made extremely small. There is an effect that can be done.

FIG. 1 is a diagram showing a simplified configuration of a bag-like container filling device. Example 1 2 is a longitudinal sectional view of the bag-like container filling apparatus shown in FIG. FIG. 3 is a plan view of a pair of clamp members. FIG. 4 is a plan view of a clamp member according to the second embodiment. (Example 2)

  The bag-like container has an opening, and the opening is positioned upward and is held by holding means. A filling nozzle that can be inserted into the opening of the bag-like container is disposed, and liquid is supplied from the liquid supply means to the filling nozzle to fill the bag-like container. A pair of clamp members that can be opened and closed is provided, and the filling nozzle inserted into the opening of the bag-like container is sandwiched from the outside of the opening. The pair of clamp members are disposed on both sides of the first sandwiching surface for sandwiching the bag-like container from the outside of the filling nozzle inserted into the opening, and sandwich both sides of the bag-like container. And 2 clamping surfaces. By forming a concavo-convex part where one of the clamp members is a convex part and the other is a concave part at the boundary part between the second clamping surface and the first clamping surface, and engaging the concavo-convex parts of both the clamp members. Since the bag-like container is held, the object of minimizing the gap between the filling nozzle and the bag-like container can be achieved.

  Hereinafter, the present invention will be described with reference to embodiments shown in the drawings. A container 2 filled with a liquid by the bag-like container filling device according to the present invention is a bag-like container such as an infusion bag formed of a flexible material, and has both sides 2a and 2b and a bottom 2c (see FIG. 2), and both side portions 2da and 2db of the upper portion 2d are welded, and an opening 2e is formed at the center of the both side weld portions 2da and 2db of the upper portion 2d. The infusion bag 2 is supplied to the filling position F with the opening 2e facing upward and the two side portions 2a, 2b being held by the pair of grippers 4A, 4B.

  A filling nozzle 6 for filling a liquid into the infusion bag 2 is installed above the position at which the infusion bag 2 is supplied in the filling position F. The filling nozzle 6 is connected to the piston rod 8 a of the air cylinder 8 for raising and lowering the filling nozzle directed in the vertical direction via a horizontal connecting member 9, and can be moved up and down by the operation of the air cylinder 8. . When the filling nozzle 6 is lowered, the tip 6a (lower end) is inserted into the inside from the opening 2e of the infusion bag 2.

  The filling nozzle 6 has a double tube structure, and a chemical solution supply passage and a gas passage are formed therein (both not shown). The chemical liquid supply passage is connected to the chemical liquid supply means 12 via the supply pipe 10, and the chemical liquid is supplied from the chemical liquid supply means 12 to the filling nozzle 6 by opening the opening / closing valve 14 provided in the supply pipe 10. be able to.

  The gas passage in the filling nozzle 6 is connected to a suction means 20 such as a vacuum pump and a nitrogen gas supply means 22 via a three-way valve 18 provided in the supply / discharge pipe 16. When the three-way valve 18 is switched and the gas passage communicates with the suction means 20 side, the inside of the infusion bag 2 is sucked through the gas passage in the supply / discharge pipe 16 and the filling nozzle 6, and the nitrogen gas supply means 22 side. When communicating, nitrogen gas can be supplied into the infusion bag 2 through the supply / discharge pipe 16 and the gas passage.

  In the filling position F, a pair of clamp members (a first clamp member 24 and a second clamp member) sandwiching the opening 2e of the infusion bag 2 from both sides facing the direction orthogonal to the positions of the pair of grippers 4A and 4B. 26) is arranged. Both clamp members 24 and 26 are respectively attached to piston rods 28a and 30a of clamp member opening and closing air cylinders 28 and 30 which are horizontally disposed so as to face each other, and operate both air cylinders 28 and 30 simultaneously. By doing so, the opening 2e of the infusion bag 2 and the filling nozzle 6 inserted into the opening 2e are sandwiched.

  The opposing surfaces of the pair of clamp members 24 and 26 (surfaces sandwiching the infusion bag 2 with the filling nozzle 6 inserted into the opening 2e from both sides) are inserted into the opening 2e as shown in FIG. First holding surfaces 24a, 26a that hold the filling nozzle 6 from the outside of the infusion bag 2, and second holding surfaces 24b that are continuously located on both sides of the first holding surfaces 24a, 26a and directly hold the infusion bag 2. 26b. The first clamping surfaces 24 a and 26 a of the clamp members 24 and 26 have a semicircular arc shape having an inner diameter that is substantially the same as or slightly larger than the outer diameter of the filling nozzle 6. The second clamping surfaces 24b and 26b are concave and convex fitting portions provided at the boundary portions with the first clamping surfaces 24a and 26a (the shape of the concave and convex fitting portions will be described later). And flat portions 24e, 24f, 26e, and 26f formed on the outside thereof.

  In the fitting portions of the second clamping surfaces 24b and 26b, a convex portion provided on one of the first clamp member 24 and the second clamp member 26 and a concave portion provided on the other mesh with each other. . In this embodiment, a recess 24c that is recessed from the flat portion 24e is formed at the position shown on the right side of FIG. 3 of the first clamping portion 24a formed at the center of the first clamp member 24, while the second The clamp member 26 is formed with a convex portion 26 c that fits into the concave portion 24 c at a position facing the concave portion 24 c of the first clamp member 24. Further, a concave portion 26d is formed in the second clamp member 26 on the left side of the first clamping portions 24a, 26a formed in the center of both the clamp members 24, 26 in FIG. A convex portion 24d that fits into the concave portion 26d is formed. When these two clamp members 24 and 26 are brought into contact with each other, the second clamping surfaces 24b and 26b on both sides of the first clamping surfaces 24a and 26a that sandwich the filling nozzle 6 are in contact with each other with no gap between the infusion bag 2 in the middle. It will be in the state. In this embodiment, the second clamping surface 24b of the first clamping member 24 is constituted by a concave portion 24c and a convex portion 24d located on both sides of the first clamping surface 24a, and both flat portions 24e and 24f outside thereof. Yes. The second clamping surface 26b of the second clamp member 26 is composed of a convex portion 26c and a concave portion 26d located on both sides of the first clamping surface 26a and both flat portions 26e and 26f on the outside thereof.

  The operation of the bag-like container filling device according to the above configuration will be described. The bag-like container (infusion bag) 2 is supplied to the filling position F with the opening 2e facing up and the two side portions 2a and 2b held by the pair of grippers 4A and 4B. In a state where both side portions 2a and 2b are held by the grippers 4A and 4B, since the opening 2e of the infusion bag 2 is closed, the infusion solution is provided by an infusion bag opening means (not shown) provided at the filling position F. Open the opening 2e of the bag 2. Subsequently, the filling nozzle 6 is lowered by the operation of the filling nozzle raising / lowering air cylinder 8, and the lower end portion 6 a thereof is inserted into the opening 2 e of the infusion bag 2.

  Thereafter, the clamp member opening / closing air cylinders 28 and 30 are operated to advance the first clamp member 24 and the second clamp member 26 so that the front surfaces of the first clamp member 24 and the second clamp member 26 are abutted across the infusion bag 2. Then, the first sandwiching portions 24 a and 26 a at the center of both the clamp members 24 and 26 hold the outer surface of the filling nozzle 6 through both surfaces of the infusion bag 2. Moreover, the 2nd clamping parts 24b and 26b located in the both sides of the 1st clamping parts 24a and 26a directly pinch | pinch both sides of the position where the filling nozzle 6 of the infusion bag 2 is inserted.

  The boundary between the portion of the infusion bag 2 that is in contact with the outer peripheral surface of the filling nozzle 6 inserted in the opening 2e and the outer portion thereof is the recesses 24c and 26d of the clamp members 24 and 26. It is sandwiched between the convex portions 24d and 26c. On the right side of FIG. 3, the portion closest to the filling nozzle 6 is the tip of the protrusion 24 g between the first clamping portion 24 a and the recess 24 c of the first clamp member 24 and the first clamping portion 26 a of the second clamp member 26. Between the first clamp member 24 and the convex portion 26c of the second clamp member 26. The outer portion of the first clamp member 24 is sharply bent. Further, on the left side of FIG. 3, a boundary point 24 h between the first clamping portion 24 a and the convex portion 24 d of the first clamp member 24 and a protrusion 26 h between the first clamping portion 26 a and the concave portion 26 d of the second clamp member 26. The outer portion of the first clamp member 24 is sharply bent by the convex portion 24c of the first clamp member 24 and the concave portion 26c of the second clamp member 26. As described above, when the infusion bag 2 is sandwiched by the clamp members 24 and 26 with the filling nozzle 6 inserted into the opening 2e, the first sandwiching sections 24a and 26a and the second sandwiching sections 24b and 26b Since the boundary between the portion of the infusion bag 2 that is in contact with the filling nozzle 6 and the portions on both sides thereof is bent, the gap formed in the boundary portion can be extremely small.

  After holding the infusion bag 2 with the filling nozzle 6 inserted by the pair of clamp members 24 and 26 as described above, the three-way valve 18 is switched to the suction means 20 side and the inside of the infusion bag 2 is aspirated for a predetermined time. Thereafter, the three-way valve 18 is switched to the closed position. In this state, the opening / closing valve 14 of the supply pipe 10 is opened, and the chemical liquid is supplied from the chemical liquid supply means 12 through the supply pipe 10 to fill the infusion bag 2. In this embodiment, the filling method is timer filling, and when a predetermined time elapses, the on-off valve 14 is closed to stop filling. Subsequently, the three-way valve 18 is switched to the nitrogen gas supply means 22 side, sent from the nitrogen gas supply means 22 to the filling nozzle 6 through the supply / discharge pipe 16, and supplied to the space above the liquid in the infusion bag 2. A heat seal means (not shown) (not shown) is provided at the filling position F, and after the liquid filling and nitrogen replacement, the clamp members 24 and 26 and the tips of the filling nozzle 6 are filled by the heat sealing means. The position below 6a is welded. After the filling process is completed in this manner, both the clamp members 24 and 26 are retracted, and the filling nozzle 6 is raised and extracted from the opening 2e of the infusion bag 2. Thereafter, the sheet is discharged from the filling position F while being held by both grippers 4A and 4B.

  In the first embodiment, as shown in FIG. 3, the concave portion 24c is formed on one side portion (right side portion in FIG. 3) of the first clamping portion 24a formed at the center of the first clamp member 24, and A convex portion 24d is formed on the other side portion (the left side portion in FIG. 3), and a convex portion 26c that fits into the concave portion 24c and a concave portion 26d that meshes with the convex portion 24d are formed on the second clamp member 26. However, the shapes of the concavo-convex portions 24c, 26c, 24d, and 26d formed on both sides of the first clamping portions 24a and 26a that hold the filling nozzle 6 of both the clamp members 24 and 26 may be other shapes. FIG. 4 is a plan view showing the shape of the clamp members (first clamp member 124 and second clamp member 126) according to the second embodiment, and other configurations are the same as those of the first embodiment. The code | symbol which added 100 to this code | symbol is attached | subjected, and the description is abbreviate | omitted.

  As in the first embodiment, the first clamp member 124 of this embodiment has a semicircular arc-shaped first sandwiching portion 124a formed at the center, and one side thereof (the right side in FIG. 4). A concave portion 124c is formed, and a convex portion 124d is formed on the other side portion (the left side portion in FIG. 4). Further, a large convex portion 124j is formed adjacent to the outside of the concave portion 124c, and a large concave portion 124k is formed adjacent to the convex portion 124d. Contrary to the first clamp member 124, the second clamp member 126 is formed with a convex portion 126c and a large concave portion 126j on the right side of the central first clamping portion 126a, and on the left side with a concave portion 126d and a large convex portion. A portion 126k is formed. In this embodiment, the infusion bag 2 once bent by the concave portions and the convex portions (124c and 126c, 124d and 126d) adjacent to the first sandwiching portions 124a and 126a has a large concave portion and a large convex portion (124j 126j, 124k and 126k), and then it is bent again in the opposite direction. In this embodiment, as in the first embodiment, the gap formed at the boundary between the position where the filling nozzle 6 of the infusion bag 2 is inserted and the position where the infusion bag 2 is directly pressed can be made extremely small. it can.

2 Bag-like container (infusion bag)
2e Opening 4A Holding means (gripper)
4B Holding means (gripper)
6 Filling nozzle 12 Liquid supply means (chemical supply means)
24 Clamp member (first clamp member)
26 Clamp member (second clamp member)
24a (first clamp member) first clamping surface 26a (second clamping member) first clamping surface 24b (first clamping member) second clamping surface 26b (second clamping member) second clamping surface 24c first 1 Clamp member recess 26c 2nd clamp member projection 24d 1st clamp member projection 26d 2nd clamp member recess

Claims (1)

Holding means for holding the opening formed in the bag-like container at an upper position, a filling nozzle that can be inserted into the bag-like container, and a liquid supply means for supplying liquid filling the bag-like container to the filling nozzle And a pair of clamp members that are arranged to be openable and closable and sandwich the filling nozzle inserted into the opening from the outside of the opening,
The pair of clamp members has a first sandwiching surface for holding the bag-like container by the outer peripheral surface of the filling nozzle and the clamp member, and a second sandwiching surface for sandwiching the bag-like container between the two clamp members,
At the boundary between the second clamping surface and the first clamping surface of both the clamp members, a fitting portion is formed with one convex portion and the other concave portion, and the concave portion and the convex portion are engaged to hold the bag-like container. A bag-like container filling device.

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