JPH06285136A - Bag supplying device - Google Patents

Abstract

PURPOSE:To supply bags under a constant condition at all times by constituting a device such that a placing plate is raised with different rising rates in its one end and the outer end, and the uppermost bag has a fixed angle irrespective of the number of bags stored in a bag storing part. CONSTITUTION:This device is composed of a magazine 2, a plate 3A on which bags 17 are placed and which is arranged on the bottom of the magazine 2 so as to turn freely around a basic end 31, a lift 4 moved up and down in the magazine 2. A lift 4 is composed of two drive mechanisms 41, 42 which raises the basic end 31 and fore end 32 of the placing plate 3A with different rates respectively. It is raised with the raising rate to make the posture of the uppermost bag 17 becomes horizontal, and thus the bags are supplied under a specified condition irrespective of the number of bags stored.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a bag supply device for supplying a bag containing, for example, blood or blood components.

[0002]

2. Description of the Related Art A blood bag (blood collection bag) for storing blood and a blood component bag for storing blood components such as plasma, platelets and red blood cells separated from blood by centrifugation are
A flexible sheet material made of resin is stacked, and its peripheral portion is sealed by fusion to form a bag, and at one end thereof, for introducing or discharging the blood or blood components, At least one flexible tube is connected.

For example, when a label for displaying various information such as the type, blood type, and volume of the blood component to be stored is attached to the surface of each bag, the blood collection bag and one or more blood components are attached. When assembling a bag connected body (multiple bags) by connecting a bag with a tube, when taking out a single blood collection bag in order to continuously collect blood from multiple donors in blood donation, etc., or recently developed Due to the ongoing automation of blood product manufacturing, when filling a single bag with blood components obtained by centrifugation,
A plurality of bags are held in a state in which the tube sides thereof are aligned in the same direction and stacked, and the bags are sequentially taken out one by one from the upper bag.

As an apparatus for automatically supplying such a bag, conventionally, a magazine for storing a plurality of bags in a state in which the tube sides thereof are aligned in the same direction and stacked, and a bag installed at the bottom of the magazine And a lift that moves the mounting table up and down, and the bag feeding device that raises the mounting table by the operation of the lift and sequentially supplies the bags mounted on the mounting table from the upper side. Are known.

In this case, in each bag, the end portion on the side to which the tube is connected (the upper portion of the bag) is thicker than the other end portion (the bottom portion of the bag) by the outer diameter of the tube. Also in the stack of a plurality of bags placed on the stand, the difference in thickness between both ends of each bag is accumulated, resulting in a difference in thickness between the bag upper side and the bag bottom side.

However, in the above-mentioned conventional bag supply device, since the mounting table is vertically moved in a horizontal state, the uppermost bag to be taken out due to the difference in the thickness of the bag aggregate, The upper part of the bag is inclined with respect to the horizontal so that the upper part of the bag is inclined, and the angle of inclination of the uppermost bag changes depending on the number of accumulated bags, which makes it difficult to take out the bag or attach a label to the bag.
Further, there is a drawback that these cannot be stably performed in a constant state.

In order to cancel the difference in the thickness of the bag stack, the mounting table may be preliminarily tilted at a certain angle with respect to the horizontal, and may be vertically moved while maintaining this tilt angle. However, even in this case, since the tilt angle of the mounting table is constant, the tilt angle of the uppermost bag changes as the number of bags accumulated on the mounting table changes,
Similarly to the above, it is not possible to stably take out the bag, attach the label, etc. in a certain state.

[0008]

SUMMARY OF THE INVENTION An object of the present invention is to provide a bag supplying device which can always supply a bag in a constant state.

[0009]

The above object is achieved by the present invention described in (1) below. Further, the following (2) to (5) are preferable.

(1) A bag storing section capable of storing a plurality of bag-shaped bags each having a tube connected to one end thereof in a state in which the tube sides are aligned in the same direction and stacked, and the vicinity of the bottom of the bag storing section. And a lift for moving the mounting table up and down, and raising the mounting table by the operation of the lift to move the bag mounted on the mounting table upward. In the bag supply device for sequentially supplying the bag, the mounting table is raised such that the rising rates thereof are different on the one end side and the other end side of the bag, respectively. A bag supply device configured such that the uppermost bag has a constant angle regardless of the number of bags.

(2) The bag supply device according to (1) above, wherein the mounting table is rotatably installed around one end thereof and is configured to rotate as it rises.

(3) The bag supply device according to (1), wherein the mounting table is composed of a plurality of mounting pieces constituting a link mechanism, and is configured to be deformed as it rises.

(4) The lift according to any one of (1) to (3) above, which has two drive mechanisms for raising one end side and the other end side of the mounting table at different rising rates. Bag feeder.

(5) The bag supply device according to any one of the above (1) to (4), wherein the bag storage section is composed of a magazine having an opening through which the tubular body can be inserted.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The bag supply device of the present invention will be described in detail below with reference to the preferred embodiments shown in the accompanying drawings.

FIG. 1 is a perspective view showing a structural example of a bag supply device of the present invention, and FIG. 2 is a partial cross-sectional side view showing a structural example of a bag supply device of the present invention. As shown in these figures, the bag supply device 1A of the present invention is configured such that a magazine 2 as a bag storage portion, a bag mounting table 3A installed at the bottom of the magazine 2 and the mounting table 3A inside the magazine 2. And a lift 4 that moves up and down.

The magazine 2 has a space inside for accommodating a plurality of bag-shaped bags 17 to be described later with the tubes 19 side thereof aligned in the same direction and stacked, and the upper and lower parts in the figure are open. It is composed of a housing.

A band-shaped opening (slit) 21 through which the tube 19 of the bag 17 can be inserted is formed in the up-down direction of the magazine 2 in a substantially central portion of the front surface (right side in FIG. 2) of the magazine 2. When the bags 17 are stored in the magazine 2, the tubes 19 of the bags 17 are inserted into the openings 21 so that the bags 17 can be easily stored in the magazine 2 in an aligned manner.

In the present invention, the bag storage section is
The magazine is not limited to the case shown in the figure, but may be, for example, a frame-shaped one as long as it can accommodate a plurality of bags 17 in an aligned manner.

As shown in FIG. 1, the bag 17 accommodated in the magazine 2 is formed by stacking resin-made flexible sheet materials, and fusion-bonding (thermal fusion, high-frequency wave) at the peripheral seal portion 18. It is made into a bag shape by fusing or adhering). When the bag 17 is a blood collection bag (blood bag) or a blood component storage bag, blood or blood components such as red blood cells, plasma, buffy coat, etc. obtained by centrifuging blood in the inner portion surrounded by the seal portion 18 Is stored.

The use of the bag 17 is not limited to the above, and for example, it is used to store body fluids other than blood such as urine, infusion fluid, dialysate fluid, dialysate fluid drainage, cleaning fluid, various chemical fluids, and the like. It may be.

As a constituent material of the sheet material constituting the bag 17, for example, soft polyvinyl chloride is preferably used. Examples of the plasticizer in this soft polyvinyl chloride include di (ethylhexyl) phthalate (DEH
P), di- (n-decyl) phthalate (DnDP) and the like are used. The content of such a plasticizer is preferably about 30 to 70 parts by weight with respect to 100 parts by weight of polyvinyl chloride.

As another constituent material of the sheet material of the bag 17, a polyolefin, that is, a polymer obtained by polymerizing or copolymerizing olefins or diolefins such as ethylene, propylene, butadiene and isoprene can be used. Polyethylene, polypropylene,
Examples thereof include an ethylene-vinyl acetate copolymer (EVA), a polymer blend of EVA and various thermoplastic elastomers, and any combination thereof. Further, polyesters such as polyethylene terephthalate (PET), polybutylene terephthalate (PBT), poly-1,4-cyclohexanedimethyl terephthalate (PCHT), and polyvinylidene chloride can also be used.

One end portion (upper part of the bag) 171 of the bag 17
One end of a tube (tube body) 19 communicating with the inside of the bag is connected to. In this case, the tube 19 is connected to the bag 17 by sandwiching the tube 19 between the sheet materials of the seal portion 18 and fusion bonding (heat fusion, high frequency fusion, etc.) or adhesion at the seal portion 18. There is.

The tube 19 is preferably flexible, and its constituent materials are, for example, polyvinyl chloride, polyethylene, polypropylene, polyolefin such as EVA, polyester such as PET and PBT, and polyurethane. Examples thereof include polyester elastomers, polyamide elastomers, thermoplastic elastomers such as styrene-butadiene-styrene copolymers, and among them, polyvinyl chloride is particularly preferable.

The outer diameter of the tube 3 is not particularly limited, but it is usually about 4 to 25 mm, preferably about 4 to 9 mm.

In such a bag 17, one end 171 of the bag is thicker than the other end (bag bottom) 172 by the outer diameter of the tube 19. Therefore, as shown in FIG. Multiple bags 1 stored in 2
The stack of 7 has two ends 171 and 17 of each bag 17.
The thickness difference of 2 is accumulated to cause a thickness difference between the upper side of the bag and the lower side of the bag.

The maximum number of bags that can be stored in the magazine 2 is not particularly limited, but it is usually about 2 to 50, and preferably about 10 to 20.

A mounting table 3A for mounting the bag 17 is installed near the bottom of the magazine 2. This table 3A
Is a plate-shaped (or frame-shaped) member, and its base end portion 31
In, the pin 33 is rotatably fixed to a movable member 9 described later.

In the configuration shown, the base 31 of the mounting table 3A is
The other end 172 of the bag 17 is attached to the tip 3 of the mounting table 3A.
Each bag 17 is placed so that one end 171 of the bag 17 is substantially aligned with the other bag 2.

As shown in FIG. 2, when one or more bags 17 are placed on the placing table 3A, one end 171 of the bag 17 is thicker than the other end 172. In order to keep the uppermost bag 17 horizontal, the mounting table 3 </ b> A is inclined so that its front end portion 32 is lower than the base end portion 31. The change in the posture of the mounting table 3A will be described in detail later.

Such a mounting table 3A is vertically moved by a lift (elevating device) 4 and is rotated about a pin 33. Hereinafter, the configuration of the lift 4 will be described in detail.

The lift 4 elevates the base 31 side and the tip 32 side of the mounting table 3A at different rising rates.
It has two drive mechanisms. The drive mechanism 41 that raises the base end 31 side of the mounting table 3A includes a motor 5 that is a drive source.
A vertically extending shaft 6 connected to the rotary shaft of the motor 5, support members 7 and 8 for rotatably supporting the shaft 6 at an upper portion and a lower portion, respectively, and along a longitudinal direction of the shaft 6. It is composed of a movable member 9 that moves.

A screw screw 6 is provided on the outer periphery of the shaft 6.
1 is formed, and the movable member 9 is fixed with a nut 91 screwed into the screw screw 61. When the shaft 6 rotates in a predetermined direction by driving the motor 5,
The nut 91 rises along the shaft 6, and the movable member 9 rises accordingly. When the shaft 6 is rotated in the opposite direction, the movable member 9 descends. As the nut 91, a ball screw having a ball (steel ball) interposed between it and the screw screw 61 can be used.

On the other hand, the drive mechanism 42 for raising the tip 32 side of the mounting table 3A is a motor 10 as a drive source, a shaft 11 extending in the vertical direction connected to the rotation shaft of the motor 10, and the shaft 11. Support members 12 and 13 for rotatably supporting the upper part and the lower part, respectively,
Movable member 14 that moves along the longitudinal direction of the shaft 10.
And an arm 15 installed on the movable member 14 and a roller 16 supported by the arm 15.

A screw screw 111 is formed on the outer periphery of the shaft 11, and a nut 141 such as a ball screw screwed to the screw screw 111 is fixed to the movable member 14. Similarly to the above, when the shaft 11 rotates in a predetermined direction by the driving of the motor 10, the nut 141 rises along the shaft 11 and the movable member 14 rises accordingly. When the shaft 11 is rotated in the opposite direction, the movable member 14 descends.

The extending portion 14 extending to the side of the movable member 14
2, an arm 15 is provided upright, and a freely rotating roller 16 is installed at the upper end of this arm. The outer peripheral surface of the roller 16 is in contact with the lower surface of the mounting table 3A near the front end portion 32 (or the base end portion 31 side thereof). As the arm 15 rises, the roller 16 moves to the mounting table 3A.
It pushes up the vicinity of the tip 32 and rolls along the lower surface of the mounting table 3A.

The mounting table 3A is supported by the pin 33 connecting the movable member 9 and the mounting table 3A and the roller 16 installed at the tip of the arm 15, and therefore, the mounting table 3A.
A rises as the movable members 9 and 14 rise.
After the uppermost bag 17 among the plurality of bags 17 placed on the mounting table 3A in the magazine 2 is taken out from the magazine 2, the mounting table 3A is raised to move the next bag 17 to the next bag 17. Make sure it is in the same position (height) as the bag that was taken out.

In this case, the drive mechanisms 41 and 42 of the lift 4 move the movable members 9 and 14 at different rising rates so as to raise the base end portion 31 and the tip end portion 32 of the mounting table 3A at different rising rates. To raise. This rate of increase is adjusted so that the posture of the uppermost bag 17 is always at a constant angle with respect to the horizontal, that is, horizontal in the illustrated configuration example, regardless of the number of bags 17 stored in the magazine 2. .

That is, as described above, since the thickness of the one end 171 of the bag 17 is thicker than the thickness of the other end 172, the rising rate of the movable member 14 is movable in order to keep the uppermost bag 17 horizontal. It is larger than the rising rate of the member 9. Specifically, the ratio of the thickness T ₁ of the one end 171 of the bag 17 to the thickness T ₂ of the other end 172 is, for example, T ₁ : T ₂ =
When the ratio is 3: 2, the rising rates of the movable members 14 and 9 are adjusted so that the ratio of the rising rate of the distal end portion 32 of the mounting table 3A to the rising rate of the base end portion 31 is about 3: 2. To be done.

The rising rate of each of the movable members 9 and 14 is set, for example, by setting the rotational speeds or drive times of the motors 5 and 10 as desired, and the pitches of the screw screws 61 and 111 as desired. It is possible to adjust by doing or combining these appropriately. The movable members 9 and 14 can be set by setting the pitch of the screw screws 61 and 111.
In the case of adjusting the increase rate of No. 1, it is not necessary to perform different drive control for each of the motors 5 and 10, which is preferable because the configuration of the control system can be simplified.

With the above-described structure, the posture of the uppermost bag 17 is always kept horizontal regardless of the number of bags 17 stored in the magazine 2, so that It is possible to easily and surely take out the label from the magazine 2 and attach the label (not shown) to the surface of the uppermost bag 17, and even when these are continuously performed, each bag is evenly attached. It can be performed stably.

The uppermost bag 17 can be taken out from
For example, it is performed by pulling the tube 19 and moving the bag 17 horizontally toward the tip portion 171 thereof.

When the bags 17 are continuously supplied by the bag supplying device 1A, the uppermost bag 17 is taken out and the mounting table 3A is raised alternately. When the bag 17 in the magazine 2 is exhausted, the motors 5 and 10 are rotated in the opposite direction to lower the mounting table 3A to the lowest allowed position, and the magazine 2 is replenished with a plurality of new bags. The same process is repeated.

FIG. 3 is a partial sectional side view showing another structural example of the bag supply device of the present invention. The bag supply device 1B shown in the figure is different from the above in the configuration of the mounting table, and the other configurations are the same as the bag supply device 1A. The differences will be described below, and the description of the same configuration will be omitted.

Placement table 3B in the bag supply device 1B
Has three placing pieces 34, 35 and 36, and the placing pieces 34 and 35 are connected by a pin 37, and the placing pieces 35 and 36 are connected by a pin 36 to form a link mechanism. is there.

The mounting piece 36 on the tip side of the mounting table 3B is
The mounting piece 34 on the base end side of the mounting table 3B is fixed to the upper end of the arm 15 so that its posture is substantially horizontal, and the base end portion 341 is formed on the side portion of the movable member 9 ′. Groove 9
It is inserted in 2 and is supported so as to be slidable in the horizontal direction.

As shown in FIG. 3, when one or more bags 17 are placed on the placing table 3B, the thickness of the one end 171 of the bag 17 is equal to the other end 172 as described above. In order to keep the uppermost bag 17 horizontal, the placing piece 36 is at a lower position than the placing piece 33, and thus the placing pieces 34 to 36 are bent and deformed into an S shape. Becomes

The mounting table 3B has a groove 92 of the movable member 9 ',
It is supported by the upper end of the arm 15, and therefore the mounting table 3B rises as the movable members 9 and 14 rise. After the uppermost bag 17 among the plurality of bags 17 placed on the mounting table 3B in the magazine 2 is taken out from the magazine 2, the mounting table 3B is raised and the next bag 17 is taken out. It should be in the same position (height) as the stored bag.

In this case, the mounting table 3B is deformed as it rises. That is, the placing pieces 34 and 36 ascend while maintaining the horizontal state, respectively, of which the placing piece 34 slides in the groove 92 as the ascending, and the placing piece 35 at the center is The inclination angle with respect to the horizontal is increased while decreasing.

The drive mechanisms 41 and 42 of the lift 4 raise the movable members 9 and 14 at different rising rates so as to raise the mounting pieces 34 and 36 of the mounting table 3B at different rising rates. . Similar to the above, this rate of increase is such that the posture of the uppermost bag 17 is always a constant angle with respect to the horizontal, that is, horizontal in the illustrated configuration example, regardless of the number of bags 17 stored in the magazine 2. Adjusted to.

Also in the bag supply device 1B having such a structure, the attitude of the uppermost bag 17 is always kept horizontal regardless of the number of the bags 17 stored in the magazine 2 as described above. The top bag 17 because
Can be taken out from the magazine 2 and a label (not shown) can be attached to the surface of the uppermost bag 17 easily and surely, and even when these are continuously performed, it can be performed stably. You can

The bag supply device 1B has the following advantages over the bag supply device 1A. That is, when the difference in thickness between the one end 171 and the other end 172 of the bag 17 is relatively large or the total length of the bag 17 is relatively long, in the bag supply device 1A, the central portion of the uppermost bag 17 is used. Although the vicinity tends to be concave, in the bag supply device 1B, since the mounting table 3B constitutes the above-described link mechanism, regardless of the conditions of the bag 17 stored in the magazine 2, The bag 17 can be kept flat.

In the present invention, the uppermost bag 1
7 is not limited to the horizontal position as shown in the figure, but may be set to maintain a state of being inclined at a constant angle from the horizontal position, for example.

Further, the structure of the lift is not limited to the one having the drive mechanisms 41 and 42 for independently raising the both ends of the mounting table 3A or 3B as shown in the figure, and the mounting table 3A is constituted by a single mechanism or device. Alternatively, both ends of 3B may be raised at different rising rates.

In the present invention, the mechanism for raising the mounting table 3A or 3B is not limited to the motor, the shaft with screw screw and the nut as shown in the figure, but is composed of, for example, a motor, a rack and a pinion gear. Any one may be used, such as a motor and a wire wound by the motor, or an air cylinder (or oil cylinder) capable of controlling the amount of movement of the piston.

The structure of the bag 17 is not limited to the one shown in the figure, and for example, one in which a plurality of tubes 19 are connected to one end 171 and one end 171 is sealed with an elastic plug at one end, for example. One end 171 of the bag 17 such as a stopped short tube, a short tube covered with a bag having a peel tab, or a tube other than the tube 19 such as a broken openable tube. And the other end 17
Any material may be used as long as it has a member that causes a difference in thickness between the two.

Although the bag supply apparatus of the present invention has been described above with reference to the structural example shown in the accompanying drawings, the present invention is not limited to this.

[0059]

As described above, according to the bag supply device of the present invention, regardless of the number of stored bags,
Since the uppermost bag always maintains a constant posture, the bag can be stably supplied.

In particular, the bag supply device of the present invention is suitable for automatically supplying a blood bag or a bag for storing blood components, and is advantageous when the production of blood products is automated.

[Brief description of drawings]

FIG. 1 is a perspective view showing a configuration example of a bag supply device of the present invention.

FIG. 2 is a partial cross-sectional side view showing a configuration example of the bag supply device of the present invention.

FIG. 3 is a partial cross-sectional side view showing another configuration example of the bag supply device of the present invention.

[Explanation of symbols]

 1A, 1B Bag supply device 2 Magazine 21 Opening 3A, 3B Loading table 31 Base end part 32 Tip part 33 Pins 34, 35, 36 Placement piece 341 Base end part 37, 38 pin 4 Lift 41, 42 Drive mechanism 5 Motor 6 Shaft 61 Screw screw 7,8 Support member 9,9 'Movable member 91 Nut 92 Groove 10 Motor 11 Shaft 111 Screw screw 12,13 Support member 14 Movable member 141 Nut 142 Extension part 15 Arm 16 Roller 17 Bag 171 One end part 172 Other end 18 Seal 19 Tube

Claims (1)

[Claims] 1. A bag storage part capable of storing a plurality of bag-shaped bags each having a tubular body connected to one end thereof in a state where the tubular body sides are aligned in the same direction and stacked, and a vicinity of a bottom part of the bag storage part. There is a mounting table for the bag installed, and a lift for moving the mounting table up and down, the operating table lifts the mounting table, and the bag mounted on the mounting table from above. A bag supply device for sequentially supplying, wherein the mounting table has the one end side and the other end side of the bag,
The bag feeding device is configured such that the respective rising rates are different so that the uppermost bag has a constant angle regardless of the number of bags stored in the bag storage unit.