JPH07315335A - Setting device of film roll in charging packer - Google Patents

Abstract

PURPOSE:To rapidly and securely set a large roll of film for a large size and heavy charging and packing. CONSTITUTION:A lifter base 12 having a mounting part 11 loaded with a film roll is raised to a set position and a lifting mechanism 10 is arranged to lower it to a loading level and fitted to the supporting means 13 provided at both axial ends of the film roll. A pair of support blocks 21, 22 for rotatably supporting the film roll are arranged at both axial ends of the film roll at the set position. The respective support blocks 21, 22 are attached to right and left fitting bodies 25, 26 which can be positioned close or apart by the interlocking mechanism provided with right-hand and left-hand screw joints 23, 24. And at least one of the support blocks is fitted to a movable shaft 27 which supports independently movably to the axial direction from the fitting body and further, energized to the fitting direction by means of a spring 28.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for setting a film roll for drawing a film from a film roll and feeding it, and joining the left and right edges of the film to continuously form a tubular package. It is a thing.

[0002]

2. Description of the Related Art A filling and packaging machine heats the left and right edges to form a cylindrical intermediate packaging in the process of feeding a film drawn from a film roll, and then performs bottom sealing and fills the article to be packed inside. However, it is a packaging machine capable of sealing one pack by the next seal and sealing the bottom of the next pack.
The techniques disclosed in Japanese Patent No. 121 and Japanese Patent Laid-Open No. 4-339786 are proposed. The above-mentioned filling and packaging machine is used for packing products in which solid components and liquid components are mixed, such as thread konjac, pasty or kneaded products, or liquids, and is used due to the fact that no bubbles remain inside. Is gradually increasing.

However, the conventional filling and packaging is actually used for a relatively small package and a relatively lightweight package. This is because the contents are likely to flow out when the film forming the pack is torn because the liquid is packed in the bag as described above. However, recognition of handling of such packaged products has become widespread, and the products have come to be used in various products. As a result, there has been a demand for filling and packaging having a size and a weight that exceed conventional common sense.

Speaking of a filling and packaging machine, it has been recognized that it is a handy device which is small and can be installed in one corner of a small factory for packaging purposes. Improvement and repair are necessary. In particular, since the film becomes thick, the weight of the roll increases, which makes it difficult to set the roll.

[0005]

SUMMARY OF THE INVENTION The present invention has been made in view of the above points, and its object is to quickly and accurately set a large film roll, which is indispensable for carrying out large and heavy filling packaging. Is to be able to do.

[0006]

In order to solve the above problems, the present invention raises and lowers an elevator 12 having a mounting portion 11 for mounting a film roll in a direction orthogonal to the film feeding direction to a set position. A pair of supporters 21 equipped with an elevating mechanism 10 for lowering the film roll and fitted with shaft support means 13 provided at both axial ends of the film roll to rotatably support the film roll. , 22 are arranged at both ends of the film roll in the set position in the axial direction, and left and right mounts 25, 26 that can be moved toward and away from each other by the interlocking mechanism 30 having left-handed and right-handed joints 23, 24 are used to support the supporter 21, 22 is attached, and at least one of the supporters is attached to a movable shaft 27 that is movably supported in the axial direction independently of the attachment body so as to be centered by fitting with the shaft support means 13. And in which it took measures that urged by a spring 28 in the fitting direction.

[0007]

1 is a side view showing an internal mechanism of a filling and packaging machine according to the present invention, in which a film roll R wound with a packaging film is a roll setting section S set on an upper rear surface of a packaging machine body B. Is set to.

The film material is a thermoplastic film that can be welded by heating, and has a thickness corresponding to the large weight of the packaged object. Suitable materials for this application are eg polyethylene films. When the above-mentioned films are supplied with a width of several tens of cm and a required thickness, the weight thereof is close to several tens of kg, and it is difficult and dangerous to set this on the setting section S by one person.

Therefore, after the film roll R is carried into the setting section S, this device is provided for automatically setting the film roll R in the setting position. The film material P is wound around a tension roll 41 provided on the upper rear side of the main body B of the packaging machine and almost inverted by the upper edge of the guide plate 42 formed in the shape of the collar of the clothes, and at the same time, is fed in front of the main body. The left and right edges move in the downward direction so that a tubular intermediate package is formed. Reference numeral 43 is a sealing means for joining the left and right edges, and has a built-in heater for heating and welding the film material P.

An elevating table 12 having a placing section 11 on which the film roll R is placed is provided so that the setting section S can move up and down. The placing portion 11 is a portion for placing the film roll R in a direction orthogonal to the film feeding direction, and in the case of the example, it has an upward U-shape and has a length about the shortest film roll to be used. Have. Reference numeral 11a is an edge member provided on the upper edge of the mounting portion 11 and has functions of preventing the film roll R from slipping and preventing damage. The elevating table 12 is moved up and down from the mounting position to the set position by the elevating mechanism 10. The illustrated elevating mechanism 10 has a linear motor having an elevating shaft 14 as an operating shaft as a power source 15 and is attached to the main body B.

The film roll R has a winding shaft at the center (see FIG. 2), and since the illustrated winding shaft has a cylindrical shape, the open end of the cylinder is used as the shaft supporting means 13. On the contrary, when the winding shaft is the core shaft, it goes without saying that the shaft end can be used as the shaft support means 13.

A pair of supporting elements 21, for supporting the film roll R in a rotatable manner by fitting with the shaft supporting means 13,
22 are arranged at positions corresponding to both axial ends of the film roll R at the set position. Both the support members 21 and 22 are arranged opposite to each other on the axis where the axial center of the film roll R should match, and the axes (referred to as the set axes) are immovable. Each of the support members 21 and 22 has an outer shape in which the diameter gradually increases from the distal end to the base portion so that the support members 21 and 22 are loosely fitted at the initial stage of fitting and tightly fitted at the final stage of fitting. The outer shape is bowl-shaped or hemispherical in the example, but may be conical (trapezoidal). Due to this outer shape, the axis of the film roll R automatically coincides with the set axis when the setting is completed.

Both supports 21, 22 are attached to the left and right mounting bodies 25,
26 is rotatably supported around the set axis,
Reference numeral a denotes a spindle, and 25b denotes a bearing thereof. One of the support members (the left support member 21 in FIG. 2 in the illustrated example) has a movable shaft 27, and a spring 28 interposed between a shaft box 27a surrounding the outer end of the movable shaft 27 and an inner bearing 27b. Therefore, it always projects in the direction of the other one of the support members (the right support member 22 in the example of FIG. 2). 27c is a retracting gap, which is a portion for avoiding contact with the bearing 27b. 29a is the mounting body 25, 26
Is a cam follower that supports and is slidable along a slide guide 29b provided on the main body B. An interlocking mechanism 30 having left-handed and right-handed joints 23, 24 is provided in order to move the left and right attachment bodies 25, 26 to the left and right simultaneously by the same size (FIG. 3).

The interlocking mechanism 30 has one joint 23 having a left-handed female thread 23a and a male thread 23b, and another one joint 24 having a right-handed female thread 24a and a male thread 24b. The screws 23a and 24a are the mounting bodies 2 described above.
It is formed on shaft cylinders 31 and 32 that are integrally attached to the lower portions of 5 and 26. The left and right male screws 23b and 24b are the rotary shaft 3
The mounting bodies 25 and 26, which are formed on the left and right portions of the shaft 3 and have the screws 23a and 24a for screwing into the male screws 23b and 24b depending on the rotation direction of the rotation shaft 33, are moved toward or away from each other. Rotational force is transmitted to the rotating shaft 33 from a bobbin motor, which is a rotational power source 34, via a transmitting means 35.

In the case of the present invention, a roll including a pair of support members 21 and 22 for supporting the above film roll R, a pair of attachment members 25 and 26 to which they are attached, and an interlocking mechanism 30 for approaching and separating them. The set part is movable in the axial direction as a whole to maintain the accuracy of the back-to-back position. In the present invention, back to back means that the center of the film material P in the feeding direction is aligned with the sealing means 43 provided in the filling and packaging machine. Even if the film size (especially the width) changes due to the back-to-back execution, the left and right edges in the feeding direction can be bonded by the same size.

A body B is provided with back-to-back means for axially moving the entire roll setting section including the supporters 21 and 22 and below. Back-to-back means is a pair of front and rear guide rails 3.
6, 37, and these guide rails 36, 37 also have the rotary power source 34 for driving the rotary shaft 33 and the slider 38.
Is suspended by.

Further, the guide rails 36 and 37 are joined and integrated by the left and right end frames 51 and 52, and in that state, they are slidably attached to the main body B in a direction parallel to the axial direction. 53 and 54 are guide rails 36,
37 shows a bearing member slidably supporting 37. A back-to-back operator 55 is provided outside the end frame 51 provided at one end of the guide rails 36 and 37. The operator 55 is rotatably attached to a mounting base 56 provided on the main body B, and a male screw portion 57 provided on the tip end of the operator 55 is provided on the end frame 51 with a female screw portion 58. The guide rails 36, 37 are rotated by rotating the operator 55.
Can be moved in the axial direction as a whole.

Therefore, the operator may carry in a large and heavy film roll R to the setting section S and place it on the setting section 11, and the subsequent setting is automatically performed. That is,
By operating the operation panel (not shown), the elevating mechanism 10 operates and the elevating table 12 rises to the set position.
Up to the position of the set axis, then the interlocking mechanism 30
Is operated, and the left and right supporters 21 and 22 are fitted into the openings at both ends which are the shaft support means 13 of the film roll R. Since the tips of the left and right supporters 21 and 22 have a small diameter, even if they do not coincide with the center of the opening of the film roll R, the supporters 21 and 22 are completely fitted into the opening, that is, the shaft support means 13,
The film roll R is centered and the setting is completed.

In order to properly manage the state in which the left and right supporters 21, 22 are fitted to the film roll R during the above-mentioned setting, a detachment detector 59 is provided near one of the movable supporters 21. It is provided to ensure the fitting of the film roll R.

After the setting is completed, if the film material P cannot be fed in the direction of the sealing means 43, the one support 22
Is in a state of being stopped by the electromagnetic brake 60, and when the tension detecting arm 61 provided on the tension roll 41 receives the tension applied to it by the feeding of the film material P and rotates about the shaft 62, Is detected by the detector 63, and the electromagnetic brake 60 is released to make the film roll R rotatable. The detector 63 and the electromagnetic brake 60 are activated each time the film material P is intermittently sent for bottom sealing and filling of the packaged object.

Reference numeral 64 is a bottom seal portion for sealing the tubular intermediate package in the width direction, 65 is a pipe for filling the object to be packaged, and 66 is a cutting portion provided at the same position as the bottom seal portion or a lower portion thereof. A squeezing roller 67 is provided above the bottom seal portion to remove air from the intermediate package.

[0022]

EFFECT OF THE INVENTION Since the present invention is constructed and operates as described above, when setting a film roll for carrying out large-sized and heavy-weight filling and packaging in the setting section of the filling and packaging machine, If the film roll is carried into the mounting portion 11, then the elevating mechanism 10 operates to lift the film roll to the height of the set shaft, and the supports 21 and 22 approach the film roll at that position from the left and right, This has the effect that the setting can be completed accurately and automatically.

[Brief description of drawings]

FIG. 1 is a side view of an embodiment showing an internal mechanism of a filling and packaging machine according to the present invention.

FIG. 2 is a rear view of an embodiment showing a film roll setting device in the filling and packaging machine according to the present invention.

FIG. 3 is a plan view of an embodiment showing the same device.

FIG. 4 is an enlarged detail view of FIG.

FIG. 5 is a side view of the same.

Claims (3)

[Claims] 1. A device for setting the film roll for pulling out and feeding the film from a film roll, and joining the left and right edges of the film roll to continuously form a tubular package. Equipped with an elevating mechanism 10 for raising and lowering an elevating table 12 having a mounting portion 11 for mounting a film roll in a direction orthogonal to the set position, and lowering it to the mounting position. A pair of supports 21 and 22 for rotatably rotatably supporting the film roll by being fitted with the shaft support means 13 are arranged at both axial ends of the film roll at the set position, and the left and right screws Left and right mounting bodies 25, 26 that can be approached and separated by an interlocking mechanism 30 having joints 23, 24
A movable shaft 27 for supporting at least one of the supporting members 21 and 22 in the axial direction independently of the mounting body so that the supporting members 21 and 22 are attached to the shaft supporting means 13 to be centered. A film roll setting device in a filling and packaging machine, wherein the film roll setting device is attached to the above and is biased by a spring 28 in a fitting direction. 2. An interlocking mechanism 30 that allows a pair of supporters 21, 22 to approach and separate from each other is provided with left and right male threads 23 on both sides.
and a power source 34 for rotating the rotary shaft 33 and a power transmission means 35 so as to be movable in parallel with the main body of the filling and packaging machine in the axial direction. The film roll setting device in the filling and packaging machine according to claim 1, further comprising: 3. When the left and right edges of the film material in the feed direction are bonded to each other to form a tubular package, the center of the film material in the feed direction is sealed so that the left and right edges are aligned by the same size. In order to match with the means 43, a pair of guide rails 36, 3 that are movable relative to an interlocking mechanism 30 that allows the pair of supporters 21, 22 to approach and separate.
7, the guide rails 36 and 37 are movable in parallel with the main body of the filling and packaging machine in the axial direction, and their positions can be adjusted by screwing with an operator 55 provided on the main body side. The film roll setting device in the filling and packaging machine according to claim 1, further comprising: