JP4241215B2 - Bag-like container manufacturing equipment - Google Patents

Description

[0001]
[Technical field to which the invention belongs]
The present invention relates to a bag-like container manufacturing apparatus that fills a liquid or the like in a container while intermittently carrying a bag-like container such as an infusion bag, and then performs a process such as sealing.
[0002]
[Prior art]
When filling a bag-like container with liquid or beverage for infusion, the bag-like container is intermittently transported, and the opening of the mouth is filled while the bag is stopped. 2. Description of the Related Art A processing apparatus (bag-shaped container manufacturing apparatus) that heats and cools a part to perform a sealing process and then discharges the bag-shaped container is known. In such a bag-shaped container manufacturing apparatus, each processing station such as filling, heating, and cooling is sequentially arranged on a straight line or around a rotating body, and the bag-shaped container is intermittently conveyed to each of these processing stations. The processes are sequentially stopped and the above processes are performed (see, for example, Patent Document 1).
[0003]
The device described in Patent Document 1 has a rotary configuration and has eight sections around a rotary table. Then, the intermittent operation is performed so that the container (molded bag) is sequentially stopped at the eight sections by eight sets of gripping means provided on the rotary table.
[0004]
The first section of the apparatus is a receiving position for the molded bag, the second section is for printing the date, etc., Section 3 is for opening the upper part of the molded bag, Section 4 is for filling the contents, Section 5 and section 6 are the steps of closing the opening by vibrating the bottom of the molded bag or removing the air, section 7 is the sealing step of heat-welding by pinching the mouth of the bag filled with the contents, section 8 Is configured to perform a process of clamping and cooling the sealed bag mouth and then discharging it, and intermittently transporting the molded bag to each section to perform each processing.
[0005]
[Patent Document 1]
Japanese Utility Model Publication No. 4-54085 (page 4, FIG. 1)
[0006]
[Problems to be solved by the invention]
In the processing method in which the bag-like container is heat-welded and then cooled and sealed as described above, after the opening of the bag-like container is melted by the heater, it cannot be completely sealed unless it is immediately cooled. . For this reason, when trouble occurs at a place other than the heating station and the apparatus stops, the container after the heat treatment cannot be transported to the cooling station, resulting in poor sealing, and this container must be eliminated. There wasn't.
[0007]
The present invention has been made in order to solve the above problems, and even when the apparatus is stopped due to some trouble, a bag-like shape capable of carrying out a complete sealing process by transporting a heated container to a cooling station. The object is to provide a container manufacturing apparatus.
[0008]
[Means for Solving the Problems]
The bag-like container manufacturing apparatus according to the first aspect of the present invention includes a holding means for holding a bag-like container, and a holding means that intermittently conveys the holding means and is disposed in a filling station, a heating station, and a cooling station that are arranged in a conveyance path. It is provided with a conveying means for stopping sequentially and a filling means, a heating means, and a cooling means provided in each station, and filling, heating, and cooling processes are performed in each station. , as well as arranged in a direction substantially perpendicular to the conveying direction for conveying the bag-shaped container from the filling station to the heating station, a second transport means for transporting the bag-shaped container from the heating station to the cooling station is provided, the bag-like container by trouble when the manufacturing apparatus is stopped, the bag-like container having undergone the heat treatment at the heating station the second transport means Therefore in which is conveyed to the cooling station has to perform the cooling process.
[0009]
In the bag-shaped container manufacturing apparatus according to the present invention, the cooling station is disposed at a position deviated in a direction perpendicular to the conveyance path for conveying the bag-shaped container from the filling station to the heating station. Since the second transport means transports from the heating station to the cooling station, even if this filling device stops due to trouble or the like and cannot be transported by the transport means, the second transport means can Since the processed bag-shaped container is conveyed to the cooling station, a complete sealing process can be performed.
[0010]
Moreover, the bag-shaped container manufacturing apparatus according to the second aspect of the present invention is such that the bag-shaped container that has been cooled in the cooling station is returned to the heating station again.
[0011]
Furthermore, the bag-shaped container manufacturing apparatus according to the invention described in claim 3 arranges the cooling station below the heating station and regulates the height of the holding means rotated and conveyed by the rotating body as the conveying means. The cam is provided with a fixed cam arranged at the filling station, and an elevating cam as a second conveying means arranged at the heating station and raised and lowered by the driving means, and is heated at the heating station. The processed bag-like container is transported to the cooling station by the second transport means.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
The present invention will be described below with reference to embodiments shown in the drawings. FIG. 1 is a longitudinal sectional view of a bag-shaped container manufacturing apparatus according to an embodiment of the present invention, FIG. 2 is a diagram for explaining each process performed in this bag-shaped container manufacturing apparatus, and FIG. 3 is a station for performing these processes. It is a top view which shows arrangement | positioning. This bag-shaped container manufacturing apparatus is a rotary type, and a plurality of (in this embodiment, twelve) container holding means 4 are provided on the outer peripheral side of the rotating body 2 at equal intervals in the circumferential direction. The rotating body 2 is rotated by a rotation drive motor 6 and intermittently conveys these container holding means 4.
[0013]
As shown in FIG. 2, the container holding means 4 is provided with a pair of grippers 4a, and grips the upper part of the bag-like container (an infusion bag in this embodiment) 8 from both sides. Although not shown in detail, the pair of grippers 4a of each container holding means 4 can move in a direction approaching and separating from each other. The container holding means 4 is mounted on a rod 10 that can be raised and lowered, and a cam follower 12 connected to the lower end of the raising and lowering rod 10 is supported by a fixed cam 14 and a raising and lowering cam that will be described later. Is regulated.
[0014]
In this embodiment, container processing stations are provided at four locations obtained by dividing the periphery of the rotator 2 by 90 degrees, and each station performs a process. The first station is a supply station SS for the bag-like container 8, and an empty bag-like container 8 that has been conveyed by a conveyance conveyor (not shown) is supplied by a supply means such as a robot. As described above, twelve container holding means 4 are provided on the outer periphery of the rotating body 2, and three container holding means 4 are stopped at four stations by intermittent rotation of the rotating body 2. . Accordingly, at this supply station SS, three bag-like containers 8 are simultaneously supplied and delivered to each container holding means 4.
[0015]
The station arranged next to the supply station SS is a filling station FS, and the three bag-like containers 8 supplied to the rotating body 2 and held by the container holding means 4 at the supply station SS rotate intermittently. By the next rotational movement of the rotating body 2, the filling station FS stops and the inside is filled with a liquid such as an infusion solution.
[0016]
Three sets of filling means 16 are provided above the filling station FS, and the three bag-like containers 8 are simultaneously filled by these filling means 16. A base 18 fixed to an external frame (not shown) is disposed above the rotating body 2, and each filling means 16 is attached to the outer periphery of the base 18. A vertical rail 20 is attached to the outer surface of the base 18, and a slider 22 to which the filling nozzle 16a is fixed is engaged with the rail 20 so as to be movable up and down. The filling nozzle 16a includes a servo motor (not shown). Can be moved up and down. A filling liquid is sent from a filling liquid tank (not shown) to the nozzle 16 a of the filling means 16 and filled into the bag-like container 8.
[0017]
Opening means 24 for opening the mouth portion 8a of the bag-like container 8 is provided at positions corresponding to the respective filling nozzles 16. The opening means 24 has a pair of vacuum pads 26 disposed on the radially inner side and the outer side of the rotating body 2, respectively, and is moved closer to and away from each other by the operation of a horizontally disposed air cylinder 28. It is designed to move forward and backward in the direction.
[0018]
Next to the filling station FS, a heating station HS and a cooling station CS are arranged. Although the heating station HS and the cooling station CS are provided at the same position in the circumferential direction of the rotating body 2, the heating station HS is on the same plane as the filling station FS, and the cooling station CS is the heating station HS. Is provided below.
[0019]
The bag-like container 8 held by the container holding means 4 is conveyed to the heating station HS at the same height as the filling station FS. The heating means 30 is provided at a height at which the upper opening 8a of the bag-like container 8 stopped at this position is welded. The heating means 30 has a pair of heaters 32 respectively disposed on the radially inner side and the outer side of the rotating body 2, and by moving the heaters 32 forward and backward by an air cylinder 34, the bag The both sides of the mouth portion 8a of the container 8 are sandwiched and heat-welded. In the heating station HS, the three bag-like containers 8 are simultaneously processed by the three heating means 30.
[0020]
A cooling station CS is disposed below the heating station HS, and cooling means 36 is provided in the cooling station CS. The cooling means 36 has a pair of cooling plates 38 respectively disposed on the radially inner side and the outer side of the rotating body 2, and these cooling plates 38 can be moved forward and backward by the air cylinder 40. . The cooling plate 38 is used to cool the bag-like container 8 by sandwiching the heat-sealed mouth portion 8a from both sides. In this cooling station CS, the three bag-like containers 8 are simultaneously processed by the three cooling means 36. The cooling plate 38 of the cooling means CS is made of a stainless steel plate in this embodiment. However, other materials may be used, and a passage for passing a cooling medium such as air or water may be provided inside. good.
[0021]
In the supply station SS and the filling station FS, the height of the container holding means 4 is regulated by the fixed cam 14 installed below, and is conveyed at the same height. Elevating cams 42 are disposed at the heating / cooling stations HS and CS, and the container holding means 4 can be raised and lowered by raising and lowering the raising and lowering cams 42.
[0022]
The elevating cam 42 has a groove 42 a with which the cam follower 12 attached to the lower end of the elevating rod 10 that supports the container holding means 4 is engaged. The elevating cam 42 is fixed to a nut 48 that is screwed to an upright ball screw 46 that is rotated by a driving means (servo motor) 44. The elevating cam 42 is raised and lowered together with the nut 48 by the rotation of the ball screw 46. An upright guide rod 50 is arranged in parallel with the ball screw 46, and when the elevating cam 42 is moved up and down, a slider 52 fixed to the nut 48 is guided by the guide rod 50 and moved up and down. Rotation is restricted.
[0023]
A discharge station DS is provided next to the heating / cooling stations HS and CS. In this discharge station DS, the bag-like container 8 in which the mouth portion 8a is heated and welded in the heating station HS and the welded portion is cooled in the cooling station CS is discharged by discharge means such as a robot (not shown) and is discharged by a discharge conveyor. It is sent to the next process. Even at the discharge station DS, three bag-like containers 8 are taken out and discharged.
[0024]
The operation of the bag-shaped container manufacturing apparatus having the above configuration will be described. Three bag-like containers 8 that have been transported by a container transport conveyor (not shown) are supplied to the supply station SS by a supply means such as a robot. In the supply station SS, three container holding means 4 are moved intermittently by the rotation of the rotating body 2, and the supplied bag-like containers 8 are respectively disposed on both sides of the container holding means 4. It is held by the gripper 4a.
[0025]
By the next rotational movement of the rotating body 2 that is rotated intermittently, the container holding means 4 that has received the bag-like container 8 at the supply station SS moves to the next filling station FS and stops. In the filling station FS, first, the vacuum pads 26 of the opening means 24 are advanced by the operation of the air cylinder 28 and are brought into contact with and adsorbed on both surfaces of the bag-like container 8. Next, the mouth 8 a at the upper end of the bag-like container 8 is opened by retracting the vacuum pad 26 that adsorbs both surfaces of the bag-like container 8. The pair of grippers 4a gripping both sides of the bag-like container 8 of the container holding means 4 are movable in a direction approaching and separating from each other, and when the bag-like container 8 is opened by the vacuum pad 26 In addition, the gripper 4a can be opened reliably by moving the grippers 4a toward each other in conjunction with the vacuum pad 26.
[0026]
The filling station FS is provided with a filling means 16 on the upper side, and when the opening 8a of the bag-like container 8 is opened, these filling nozzles 16a are lowered by the drive of a servo motor (not shown). It is inserted into each bag-like container 8 and filled with a filling liquid sent from a filling liquid tank (not shown). When the filling of the predetermined amount of liquid is completed, after the filling nozzle 16a is raised, these bag-like containers 8 are sent to the next heating station HS. When the bag-like container 8 is conveyed from the filling station FS to the heating station HS, the elevating cam 42 provided in the heating station HS is in the raised position (position indicated by a solid line in FIG. 1), and the container holding means The four cam followers 12 move from the fixed cam 14 into the groove 42a of the elevating cam 42 with the same height, and the container elevating means 4 moves from the filling station FS to the heating station HS with the same height.
[0027]
Heating means 30 is provided in the heating station HS, and when the bag-like container 8 stops, the heaters 32 provided on the radially inner side and the outer side of the rotating body 2 are operated by the operation of the air cylinder 34. It advances and contacts both surfaces of the mouth part 8a of the bag-like container 8. The mouth portion 8a of the bag-like container 8 is sandwiched and melted by the heater 32 from both sides. Thereafter, when both heaters 32 are moved backward by the air cylinder 34 and separated from the bag-like container 8, the servo motor 44 of the elevating cam 42 is driven to rotate the ball screw 46. The nut 48 is lowered by the rotation of the ball screw 46, and the elevating cam 42 attached to the nut 48 is lowered integrally (see the elevating cam 42 indicated by an imaginary line in FIG. 1).
[0028]
When the elevating cam 42 is lowered, the cam follower 12 of the container holding means 4 engaged with the groove 42a of the elevating cam 42 is pulled down, so that the container elevating means 4 and the bag-like container 8 held by the container elevating means 4 are used. However, it moves down to the position indicated by the imaginary line in FIG.
[0029]
The position where the container holding means 4 is lowered is a cooling station CS, and a cooling means 36 is provided. When the three bag-like containers 8 stop at the cooling station CS, the cooling plates 38 of the cooling means 36 respectively provided on the radially inner side and the outer side of the rotating body 2 are operated by the operation of the air cylinder 40. It advances in the direction of the bag-like container 8 and is pressed against both surfaces of the mouth part 8a of the bag-like container 8 melted by the heating means 30 to cool the mouth part 8a of this bag-like container 8. By the melting by the heating means 30 and the cooling by the cooling means 36, the mouth portion 8a of the bag-like container 8 is completely sealed.
[0030]
When the cooling process in the cooling means 36 is completed, the servo motor 44 of the elevating cam 42 is driven again, the ball screw 46 is rotated in the reverse direction to the lowering time, the nut 48 is raised, and the cam follower 12 and the container holding means 4 are restored. To the position of the heating station HS at the height of. In this manner, the bag-like container is lowered once from the heating station HS, transported to the cooling station CS and subjected to the cooling process, returned to the heating station HS, and then rotated to rotate the rotating body 2. 8 is conveyed to the discharge station DS.
[0031]
In the bag-like container manufacturing apparatus, in the supply station SS, the filling station FS, the heating station HS and the discharge station DS, the fixed cam 14 provided in the supply station SS, the filling station FS and the discharge station DS, and the heating station HS The bag-like container 8 is conveyed at the same height for processing according to the raised position of the lift cam 42 provided. Only the cooling station CS is provided in a direction perpendicular to the container transport path from the filling station FS to the heating station HS (in this embodiment, immediately below the heating station HS). It is transported from the heating station HS to the cooling station CS by the lifting cam 42 as the second transport means.
[0032]
In this way, the cooling station CS is disposed immediately below the heating station HS, and the bag-like container 8 that has been subjected to the heating process in the heating station HS is transferred to the cooling station CS by the second transfer means (elevating cam 42). Therefore, even when this bag-like container manufacturing apparatus is stopped due to some trouble, the heat-treated bag-like container 8 can be sent to the cooling station CS, and the sealing process consisting of heating and cooling can be completed. . Therefore, the sealing process is not interrupted only by the heat treatment of the bag-like container 8, the occurrence of a sealing failure can be prevented, and waste such as discarding the filled bag-like container 8 can be eliminated. . Moreover, in the case of a rotary type bag-shaped container manufacturing apparatus, the installation area of the entire apparatus can be reduced.
[0033]
In the above-described embodiment, the cooling station CS is disposed below the heating station HS. However, the heating station HS and the cooling station CS are not necessarily disposed above and below, for example, the supply station SS, the filling station FS, the heating station The station HS and the discharge station DS may be arranged on the same circumference, and the cooling station CS may be arranged on the radially outer side of the heating station HS. Moreover, although the rotary type bag-shaped container manufacturing apparatus has been described, the present invention is not limited to the rotary type and can be applied to a line-type bag-shaped container manufacturing apparatus. In this case, the supply station, the filling station, the heating station, and the discharge station may be arranged on a straight line, and the cooling station may be arranged in a direction substantially orthogonal to the heating station, that is, on the side of the conveyance path.
[0034]
Further, in the above embodiment, the heating station HS is transported to the cooling station CS and cooled, and then returned to the heating station HS and then transported to the discharge station DS. However, the discharge station DS is transferred to the cooling station CS. The bag-like container 8 that has been processed in the cooling station CS may be transported to the discharge station DS and discharged at the same height.
[0035]
【The invention's effect】
As described above, according to the present invention, the holding means for holding the bag-like container, and the conveying means for intermittently conveying the holding means and sequentially stopping the filling station, heating station, and cooling station arranged in the conveyance path. And a filling means, a heating means, and a cooling means provided in each station, and in each bag-like container manufacturing apparatus that performs filling, heating, and cooling processes, the cooling station is heated from the filling station. The bag-shaped container manufacturing apparatus has been stopped due to a trouble by providing a second transport means for transporting the bag-shaped container from the heating station to the cooling station . when the bag-like container having undergone the heat treatment at the heating station by second conveying means Since the cooling process is performed by transporting it to the rejection station, even if this equipment stops due to a problem, the container that has been processed in the heating station can be sent to the cooling station for processing, and the container with a poor seal can be processed. Occurrence can be prevented.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view of a bag-shaped container manufacturing apparatus according to an embodiment of the present invention.
FIG. 2 is a perspective view for explaining the arrangement of stations and processing steps of the bag-like container manufacturing apparatus.
FIG. 3 is a plan view showing the arrangement of stations in the bag-like container manufacturing apparatus.
[Explanation of symbols]
CS Cooling station FS Filling station HS Heating station 2 Conveying means (rotating body)
4 Holding means 8 Bag-like container 16 Filling means 30 Heating means 36 Cooling means 42 Second conveying means (elevating cam)

Claims (3)

Holding means for holding the bag-like container, conveying means for intermittently conveying the holding means and sequentially stopping the filling station, heating station and cooling station arranged in the conveying path, and filling provided in each of the stations In a bag-like container manufacturing apparatus that includes a means, a heating means, and a cooling means, and performs filling, heating, and cooling processes at each station.
The cooling station, as well as arranged in a direction substantially perpendicular to the conveying direction for conveying the bag-like container to the heating station from the filling station, provided with the second transport means for transporting the bag-shaped container from the heating station to the cooling station, by trouble When the bag-shaped container manufacturing apparatus stops, the bag-shaped container manufactured by the heating station is transported to the cooling station by the second transport means to perform the cooling process.   The bag-shaped container manufacturing apparatus according to claim 1, wherein the bag-shaped container that has been cooled in the cooling station is returned to the heating station again.   A cooling station is arranged below the heating station, and a cam for regulating the height of the holding means that is rotated and conveyed by the rotating body as the conveying means is provided, and this cam is a fixed cam arranged at the filling station. And a raising / lowering cam as a second conveying means arranged at the heating station and moved up and down by the driving means, and the bag-like container heated at the heating station is conveyed to the cooling station by the second conveying means. The bag-shaped container manufacturing apparatus according to claim 1 or 2, wherein

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