JPH10236448A - Packaging bag holder stand - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a packaging bag holder stand wherein stability at the time of carrying is high, various kinds of feeders can be utilized and a held packaging bag is stable but does not swing by providing, on an upper part of a base, right and left holders for holding both sides of an upper part of the packaging bag or for making them free to open and an open/close mechanism for increasing/decreasing a distance between the right and left holders. SOLUTION: When the holder stand 1 is placed at a bag feed position, an open/close lever driving means is activated to push wedges 6a, 7a of open/close levers 6, 7 inward, open housings 4, 5 and increase a distance between holders 8, 9 and holders 10, 11. Subsequently a holder driving means is activated to open holding parts 8b, 9b and 10b, 11b against force applied by a compressive spring 12. Then a packaging bag is taken out of a bag storage device, both upper side rims of the bag W are held between the holding parts 8b, 9b and 10b, 11b, the holder driving means is released to push the holders 8 to 11 inward by force applied by the compressive spring 12, and the holding parts 8b, 9b and 10b, 11b are closed to have the packaging bag held.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging bag holder stand for supplying a packaging bag in a state of vertically holding the packaging bag to a packaging device for filling the content in the packaging bag.

[0002]

2. Description of the Related Art A conventional packaging bag holder stand is disclosed in, for example, Japanese Utility Model Publication No. Sho 56-40645 or Japanese Patent Publication No. Sho 5-5.
As described in JP-A-6-285, a substantially disk-shaped base, a pair of left and right arms pivotally supported on the base so as to be freely set thereon, and a packaging bag installed at each end of the left and right bowls There are known those which comprise a left and right gripper mechanism or the like which allows both right and left sides to be pinched.

According to the above publication, the packaging bag holder stand is carried on a conveyor, and is first positioned at a predetermined position in a stacking station. The stack station is provided with a cam for tilting the left and right supports of the positioned holder stand and a pusher for opening and closing the gripper, which respectively act on the tilting mechanism of the left and right supports and the opening and closing mechanism of the gripper, respectively. Both sides of the packaging bag supplied by the suction cup from the stacker are sandwiched. The holder stand holding the packaging bag between the grippers is conveyed on a conveyor and subsequently positioned at the opening station. The opening station is provided with a cam for tilting the left and right bowls of the holder stand positioned inward, and a pair of suction cups for adsorbing and spreading the both sides of the packaging bag. Acts on the bag to open the bag mouth of the packaging bag held by the holder stand.

[0004] Subsequently, the holder stand is conveyed by a conveyor through a contents filling station to a bag mouth sealing station. According to Japanese Patent Publication No. 56-285, this seal station is of a rotary type, and is provided with a push-up rod and a heat seal bar, which open the left and right supports of the holder stand outward, and the push-up rod is provided with the left and right supports. Acts on the tilting mechanism and opens it outward to close the bag mouth of the packaging bag, heat seals this bag mouth with a heat seal bar, and after the seal is completed, the above-mentioned push-up rod acts again to open the left and right bowls further outward. , Release the sealed packaging bag from the gripper,
This is dropped on a discharge conveyor. On the other hand, the used holder stand is discharged from the sealing station, collected, and used repeatedly.

[0005] As described above, the packaging bag is first sent to the bag-filling packaging line together with the holder stand with the gripper mechanism gripping the left and right sides thereof. Bagging and packing work such as opening of the contents, filling of contents, sealing of the bag mouth is performed,
Since the packaging bag holding means (holder holder) exists independently of the bag-filled packaging line, the degree of freedom in line design is relatively high and the working speed is high as seen in Japanese Patent Publication No. 56-285. Has the advantage that the processing speed can be increased because the overall processing speed is not restricted by the slowest processing station.

[0006] However, the conventional packaging bag holder stand has a problem that the base is formed in a thin disk shape, so that the stability is poor and the usable feeding device is limited.
For example, a timing screw cannot be used as a feeding device. Further, even when a conveyor or a rotary feeder is used, there is a problem in that the held packaging bag shakes due to poor stability, and the liquid is scattered during filling or transport, thereby causing poor sealing due to the scattered liquid. And, since the packaging bag is simply held and hung on both upper sides, the shaking does not easily stop and the above tendency is promoted.

In addition, since the interval between the left and right grippers is set by the tilt of the left and right supports, the grippers draw an arc-shaped trajectory at the time of opening the bag opening, so that the grippers are opened. In addition, there is a problem that the bag mouth is distorted, and the operation of inserting the hopper or nozzle for filling the contents into the bag mouth becomes uncertain. In addition, we prevent splash of liquid,
In order to ensure the operation of inserting the hopper and the nozzle into the bag mouth, it was necessary to make the size of the packaging bag larger than necessary.

On the other hand, JP-A-8-40495 discloses that
A different type of holder from the holder stand described above is described. This is a bottle holder including a substantially cylindrical holder main body for accommodating the bottle and a support member placed on the bottom surface thereof, and has an advantage that it can be fed stably even with a feeding device such as a timing screw. However, there is a problem that the application target is limited to a bottle whose shape does not change during the filling operation or the transportation. Even if this is applied to a self-contained packaging bag, for example, it deforms during the filling operation and causes a displacement in the horizontal or vertical direction, resulting in poor sealing of the bag mouth. Further, since the air in the bag cannot be eliminated, the residual air is increased as compared with the holder stand having the gripper. In addition, this bottle holder has a problem that contents and dust spilled on the bottom surface of the holder body and the support member easily adhere thereto. In this case, it is necessary to take out the bearing member and turn over the holder body for cleaning.

[0009]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems of the prior art, and has a high stability at the time of conveyance, can freely use a timing screw and a rotary feeder, and the like. It is a first object of the present invention to obtain a holder stand in which a held packaging bag is stable and has less shaking. In addition, to obtain a holder stand that is easy to clean, and in the case of a holder stand that grips both sides of the packaging bag, stabilize the packaging bag to suppress the occurrence of sealing failure due to scattering of contents and scattered liquid. Another object of the present invention is to open the bag mouth without distortion when opening the bag mouth, and to reliably insert a hopper or nozzle for filling the contents into the bag mouth.

[0010]

Means for Solving the Problems The present invention (claim 1) provides:
The present invention relates to a packaging bag holder stand for holding a packaging bag and supplying the packaging bag to a packaging device, and a cylindrical base having a space for accommodating the packaging bag therein, and both sides of an upper portion of the packaging bag installed on the base. It is characterized by comprising a left and right gripping device that can freely grip or open the gripper, and an opening and closing mechanism that enlarges or reduces the interval between the left and right gripping devices.

In a preferred embodiment of the packaging bag holder stand, the opening and closing mechanism horizontally moves the left and right gripping devices. In this case, the opening and closing mechanism controls the left and right gripping devices respectively. A pair of housing members supported and mounted on the upper portion of the base so as to be horizontally movable, and opening / closing means for simultaneously opening and closing the pair of housing members horizontally inward or outward (claim 3); The base is a cylindrical body without a bottom (Claim 5), and an anti-sway member that contacts the packaging bag and suppresses shaking is installed inside the base (Claim 6). Can be

Further, the present invention (claim 4) relates to a packaging bag holder stand for holding a packaging bag with a spout on the upper side and supplying the packaging bag to a bag packing apparatus, and has a space for accommodating the packaging bag therein. It is characterized by comprising a cylindrical base and a gripping device installed on the base and capable of gripping or releasing the spout. As a preferred embodiment of the holder stand, the base is a cylindrical body without a bottom (Claim 5), and a swing-preventing member is provided inside the base so as to come into contact with the packaging bag and suppress shaking. (Claim 6).

In any of the holder stands described above, if the orientation is lost due to the irregular rotation during the conveyance by the feeding device, for example, in each of the bag feeding process to the sealing process described later, the bag feeding device to the sealing process will be described. The operation of each device of the device is not performed correctly. In order to provide the holder stand with directivity and prevent irregular rotation at the time of transfer, for example, the shape of the base itself may have directivity. Specifically, it is conceivable that the outer shape of the base is polygonal, or if the outer shape is cylindrical, a part of the outer shape is chamfered to give directionality. At the same time, it is necessary to accurately position and hold the base at a predetermined position in each of the steps from the bag feeding step to the sealing step in order to reliably operate the bag feeding apparatus to the sealing apparatus in each step. For this purpose, it is desirable to provide positioning means corresponding to a positioning device provided in each step on the base.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described more specifically with reference to FIGS. First, FIG. 1 and FIG. 2 show an example of a packaging bag holder stand of a type in which both upper sides of a packaging bag are gripped and supplied to a bag packaging device.
The holder stand 1 is mounted on a cylindrical base 2 having a space for accommodating the packaging bag W therein and slidably mounted on the base 2 in a radial direction (and parallel to the packaging bag W) so as to be horizontally slidable. A pair of housings 4, 5 urged inward by the spring 3, left and right gripping devices supported by the respective housings 4, 5 and gripping both side portions of the packaging bag W;
Opening / closing means for sliding the housings 4 and 5 horizontally, that is, a pair of opening / closing levers 6 and 7 and the like.

The left and right gripping devices include a pair of gripping tools 8, 9 and 10, 11 which are slidably and loosely fitted into holes formed in the housings 4, 5, respectively, and a compression spring which constantly urges them inward. Each of the gripping tools 8 to 11 has a head 8a to 11a for opening and closing at the rear end, and has gripping parts 8b to 11b at a tip inside the housing.
The gripping portions 8b and 9b grip one end of the packaging bag W,
When the other end of the packaging bag W is gripped by the gripping portions 10b, 11b (11b is not shown), the packaging bag W is suspended vertically, and slides in the sliding direction of the gripping tools 8 to 11. Orient vertically.

More specifically, the base 2 is a thick, relatively heavy cylindrical body molded of, for example, plastic, having a height sufficient to accommodate most of the packaging bag W, and having a bottom. And a pair of guide projections 13 are formed at the top to guide the horizontal sliding movement of each housing. The opening / closing levers 6 and 7 are rotatable around a fulcrum shaft 14 formed on the base 2, and have inwardly directed wedge portions 6a and 7a formed at the upper ends thereof.
7a faces the base 2 and the housings 4 and 5 enter the gaps facing each other.

The housings 4 and 5 are formed with guide grooves 15 corresponding to the guide projections 13 of the base 2, and the opposing surfaces 4 a and 5 a of the housings 4 and 5 are formed with the wedge portions 6.
The inclined surfaces 4a, 5a are always formed by the action of the tension spring 3 so that the inclined surfaces 4a, 5a are constantly formed on the wedge portions 6a, 7a.
a. Also, each housing 4,
Cuts 4b, 5b are formed in the center of 5, and the grips 8b to 11b face the cuts 4b, 5b.

Further, a pair of chamfers 16 are formed on the cylindrical outer surface of the base 2 at symmetrical positions, and a positioning means, that is, a pair of positioning holes 17 is provided on one side (or both sides). Is formed. The distal end 18a of a positioning member 18 installed at a stop position of each step described later fits into the hole 17, and is positioned and held at each stop position.

The packaging bag holder stand 1 having the above-described configuration is used for supplying a bag, for example, as described in the above publication.
When the present invention is applied to a line of a bag-filling and packaging apparatus that sequentially performs each step of bag opening, filling, sealing, and discharging, the following operation mode is adopted. First, the holder stand 1 is conveyed to a bag supply position by an appropriate feeding device and is positioned there. At the time of conveyance, since the chamfer 16 directs the base 2, the holder stand 1 is irregular. It is transported to the bag supply position without causing rotation. Then, at the bag feeding position, the positioning member 1
8 is pushed out, its tip 18a fits into the hole 17, and the base 2 is accurately positioned and held at the bag supply position.

Then, the opening / closing lever driving means (not shown) provided at the bag feeding position is operated, and the lower part of the fulcrum shaft 14 of the opening / closing levers 6 and 7 may be pulled in the direction A (or the upper part of the fulcrum shaft 14 may be pushed). ), The wedges 6a, 7a are pushed inward, and the housings 4, 5 are opened (a direction) against the urging force of the tension spring 3, so that the distance between the grippers 8, 9 and the grippers 10, 11 is enlarged. Subsequently, the gripper driving means is activated to operate the head 8.
a to 11a are pulled in the direction c, and the grippers 8b and 9b, 10b
And 11b are opened against the urging force of the compression spring 12.

Subsequent to or in parallel with the above operation, the suction cup of the bag dispenser takes out one packaging bag from the storage device, inserts it into the space in the holder stand 1, and places the upper side edges of the packaging bag W on both sides. Is brought between the gripping portions 8b and 9b, and 10b and 11b. At this stage, the gripper driving means is released, and the gripping tools 8 to 11 are pushed inward by the biasing force of the compression spring 12 (in the direction d). The parts 8b and 9b, 10b and 11b are closed and the packaging bag W is gripped. Here, the driving device is operated again to draw in the positioning member 18, and the tip 18
a is pulled out from the hole 17 and the positioning of the base 2 is released.

Next, the holder stand 1 is transported to a bag opening position by an appropriate feeding device, and is positioned there. Then, the opening / closing lever driving means provided at the bag mouth opening position operates, pushes the lower part of the fulcrum shaft 14 of the opening / closing levers 6 and 7 in the B direction, pulls the wedges 6a and 7a outward, and moves the housings 4 and 5 out. Slides inward (direction b) by the urging force of the tension spring 3, and the grippers 8, 9 and the grippers 10,
The interval of 11 is reduced. At the same time, the suction cups of the opening device adsorb and spread on both sides of the packaging bag W, and open the bag mouth. In addition,
The process of positioning the base 2 at the bag mouth opening position and releasing the positioning is performed in the same manner as in the bag feeding step described above.

The holder stand 1 coming out of the opening position is then sent to a filling step, where the holder stand 1 with the contents filled in the packaging bag is subsequently sent to a sealing step,
It is positioned at a predetermined position of the sealing device. Then, the opening / closing lever driving means installed here is operated, and the lower part of the fulcrum shaft 14 of the opening / closing levers 6 and 7 is pulled in the direction A (or the upper part of the fulcrum shaft 14 is pushed), and the wedge portions 6a and 7a are moved inward. To open the housings 4 and 5 (direction a) to enlarge the distance between the grippers 8 and 9 and the grippers 10 and 11. As a result, the bag mouth is in a taut state, and at the same time, the air inside the packaging bag is eliminated. Subsequently, the seal bar of the heat sealing device sandwiches the bag mouth and heat seals.

After the sealing is completed, the gripper driving means provided in the sealing device is operated to pull the heads 8a to 11a in the direction c, and to hold the grippers 8b and 9b, 10b and 11b with the compression spring 1b.
2, the packaging bag W is opened, falls, and is subsequently discharged. On the other hand, the empty holder stand 1 is collected and repeatedly used. Base 2
The process of holding and releasing the position at the sealing position is performed in the same manner as in the bag feeding step described above.

As described above, the holder stand 1 is
Since the left and right gripping devices are provided on the upper part of the cylindrical base 2 having a space for accommodating the packaging bag therein, the packaging bag W is suspended vertically in a state where the packaging bag W is housed in the base 2 in the middle. First, there is an advantage that the stability of the holder stand itself is high, a timing screw and a rotary feeder can be freely used, and the degree of freedom in the line configuration of the entire bag-filling and packaging apparatus is increased. Then, the held packaging bag is stable and has essentially no swaying, and even if swayed, it hits the inner wall of the base 1 and settles down relatively quickly, thereby suppressing the scattering of the liquid and the accompanying sealing failure.

Further, since the left and right gripping devices are slid horizontally, no distortion or wrinkles are generated in the bag mouth when opening the bag mouth, and a hopper or nozzle for filling the contents is inserted into the bag mouth. There is an advantage that operation is assured. Then, in combination with the small scattering of the liquid, the size of the packaging bag can be set to a size according to the internal capacity, and the packaging material can be saved compared to the conventional example. Furthermore, since the cylindrical base having no bottom is used, the contents and dust hardly adhere, and even if they adhere, they can be easily washed off from above, so that the washing is easy.

Next, FIGS. 3 and 4 show a holder stand 1A basically similar to the holder stand 1 shown in FIGS. 1 and 2, but with an anti-swing member 19 installed inside the base 2. FIG. It is. A pair of the anti-swing members 19 are installed inside the base 2 so as to face both sides of the packaging bag W (that is, in parallel with the opening and closing directions of the gripping tools 8 to 11), and the shafts whose protruding lengths can be adjusted respectively. 19a and a spherical tip 19b attached to the tip thereof, and the tip 19b comes into contact with the packaging bag W after the contents are filled, thereby suppressing the shaking more effectively.

The protruding position of the tip portion 19b can be appropriately adjusted by the shaft 19a. For example, the tip portion 19b comes into contact with the packaging bag W after the contents are filled or a position slightly outside (in this case, the packaging bag comes into contact and swings Should be set). The shape and material of the tip are not particularly limited, but spherical rubber or resin is preferable so as not to damage the packaging bag. There are no particular restrictions on the location or number of attachments.

Next, FIG. 5 shows an example of a packaging bag holder stand for holding a packaging bag with spout and supplying the same to a bag packaging device.
Is composed of a cylindrical base 22 having a space for accommodating the packaging bag W therein, and a holding device 23 capable of holding or releasing the spout on the base 22. This gripping device 23
Comprises a frame 24 attached to the base 22, a pair of grippers 26, 27 which are horizontally rotated about a fulcrum shaft 25 provided on a horizontal portion of the frame 24 and can be freely opened and closed;
A compression spring 28 provided between the pair of grippers 26, 27 behind the fulcrum shaft 25 and constantly biasing the grippers 26a, 27a at the tips thereof in a direction to close the grippers 26, 27;
And an opening / closing roller 29 attached to the camera.

The holder stand 21 is attached to the spout S
Next, an example of the operation in the case of using for holding and transporting the attached packaging bag W will be described. First, the holder stand 21 is transported to a bag supply position by an appropriate feeding device, and is positioned there. Then, the opening / closing roller driving means installed at the bag feeding position operates, and pushes the opening / closing roller 29 in the A direction,
Each gripping tool 26, 27 is pressed against the urging force of the compression spring 28 to a
, And the gripping portions 26a and 27a are fully opened. Subsequent to or in parallel with the above operation, the bag feeder inserts the packaging bag W with the spout S into the space in the base 22 and brings the spout S between the grips 26a, 27a. Opening / closing roller 29 by the opening / closing roller driving means
Of the gripper 2 is released by the urging force of the compression spring 28.
The spout S is gripped by closing the grips 26a and 27a by rotating the wheels 6 and 27 in the direction b. Further, the opening / closing roller driving means presses the opening / closing roller 29 in the direction B and applies a force in the direction b to the gripping portions 26a and 27a to secure the gripping of the spout S.

Next, the holder stand 21 is conveyed to a filling step by a suitable feeding device, is positioned at a predetermined position of the filling device, and a filling nozzle is inserted from above into a hole of the spout S, from which liquid material is filled. . After the filling, the holder stand 21 is sent to the sealing process, and is positioned at a predetermined position of the sealing device. After the spout S is sealed here, the opening / closing roller driving means installed here is operated to open / close the opening / closing roller. 29 in the direction A, and each gripper 26,
The gripping portions 26a and 27a are opened by rotating the 27 in the a direction against the urging force of the compression spring 28. As a result, the spout S of the packaging bag W is released from the gripping device 23, falls, and is subsequently discharged. On the other hand, the empty holder stand 21 is collected and repeatedly used.

As described above, the holder stand 21
As with the holder stand 1 described above, a gripping device is provided above a cylindrical base 22 having a space for accommodating a packaging bag therein, and the packaging bag W is vertically accommodated in a state where the packaging bag W is halfway accommodated in the base 22. The first advantage is that the holder stand itself is highly stable, the timing screw and rotary feeder can be used freely, and the degree of freedom in the line configuration of the entire bag-filling and packaging device is increased. There is. Then, the held packaging bag is stable and has essentially no shaking, and even if it shakes, it hits the inner wall of the base 22 and is relatively fast to settle, so that there is no hindrance to insertion of the filling nozzle. Further, if the anti-sway member shown in FIGS. 3 and 4 is provided, the sway can be suppressed more effectively.
In addition, since a cylindrical base having no bottom is used, the contents and dust hardly adhere, and even if they adhere, they can be easily washed off from above, so that washing is easy.

[0033]

According to the present invention, the stability at the time of transportation is high, the timing screw and the rotary feeder can be freely used, the degree of freedom of the line configuration of the bag-filling and packaging apparatus is increased, and the apparatus is held. In addition, it is possible to obtain a holder stand in which the packaging bag is stable and has less shaking. Further, by using a cylindrical body without a bottom as a base, there is an advantage that cleaning becomes easy. Furthermore, in the case of a holder stand of a type that grips both sides of the packaging bag, the packaging bag is stabilized to suppress the occurrence of sealing failure due to scattering of the contents and the scattered liquid, and when opening the bag mouth, the bag mouth is opened. Can be opened without distortion, and the effect that the hopper or nozzle for filling the contents can be surely inserted into the bag mouth can be obtained.

[Brief description of the drawings]

FIG. 1 is a perspective view of a holder stand according to the present invention.

FIG. 2 is a sectional view taken along the line YY.

FIG. 3 is a perspective view of the holder stand according to the present invention.

FIG. 4 is a sectional view taken along the line YY.

FIG. 5 is a perspective view of another holder stand according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1, 21 Packaging bag holder stand 2, 22 Base 4, 5 Housing 6, 7 Opening / closing lever 8-11 Gripping tool 19 Sway preventing member 23 Gripping device W Packaging bag

Claims (6)

[Claims] 1. A packaging bag holder stand for holding a packaging bag and supplying it to a bag-filling packaging apparatus, wherein the cylindrical base has a space for accommodating a packaging bag therein, and is installed on an upper portion of the base. A packaging bag holder stand, comprising: a left and right gripping device capable of gripping or opening both upper sides of a packaging bag; and an opening / closing mechanism for enlarging or reducing an interval between the left and right gripping devices. 2. The packaging bag holder stand according to claim 1, wherein the opening / closing mechanism horizontally moves the left and right gripping devices. 3. The opening / closing mechanism includes a pair of housing members respectively supporting the left and right gripping devices and mounted on the upper portion of the base so as to be horizontally movable, and simultaneously moving the pair of housing members inward or outward. The packaging bag holder stand according to claim 2, further comprising an opening / closing means for opening / closing horizontally. 4. A packaging bag holder stand for holding a packaging bag with a spout and supplying the packaging bag with the packaging bag, and a cylindrical base having a space for accommodating the packaging bag therein, and an upper portion of the base. A packaging bag holder stand provided with a gripping device which is installed on the spout and is capable of gripping or releasing the spout. 5. The packaging bag holder stand according to claim 1, wherein the base is a cylindrical body without a bottom. 6. The packaging bag holder stand according to claim 1, further comprising a swing-preventing member that contacts the packaging bag and suppresses shaking inside the base.