JP4392289B2 - Film feeding device - Google Patents

Description

  The present invention is applied to, for example, a packaging machine that performs continuous packaging by pulling out and transporting a film from a roll of film wound, and in particular, feeding of a film that enables continuous operation without stopping the packaging machine. It relates to the device.

Conventionally, the film used for filling and stretch packaging machines, etc., when the roll of film roll is consumed and consumed, the packaging machine is manually stopped and replaced with a new film roll. I was driving a packaging machine. At this time, when all the films of the film roll are pulled out and the film supplied to the packaging machine becomes empty, a new film roll is set again, the starting end of the film is pulled out, and a plurality of film feed rollers are pulled out. Because there is a problem that the troublesome work of routing and arranging the film between the folding part, the sealing mechanism and the cutter mechanism has to be repeated again, the machine is stopped in advance before the film disappears and a new film is The machine was operated again after replacing the roll. For this reason, when the film roll is replaced, the packaging operation cannot be performed, which causes a reduction in the packaging work efficiency. In addition, under the situation where the lineup from the packaging of goods to counting, packing and shipping is made possible by recent automation, there is also a problem that the stoppage of machines such as packaging machines leads to a reduction in efficiency of all lines.

Therefore, a spare film roll is set in a packaging machine in advance separately from the film roll being supplied, and a starting member of the film is drawn out from the spare film roll and is provided adjacent to the film connecting portion. When the film roll of the film roll being supplied has been consumed, the film is connected to the end of the film being supplied and the start end of the film being standby. There has been proposed a film feeding device in which films are connected to each other at portions to continuously supply the film without stopping the machine. (For example, see Patent Document 1 and Patent Document 2.)
Japanese Utility Model Publication No. 3-48009 Japanese Utility Model Publication No. 62-31381

  In the film feeding device according to Patent Document 1 and Patent Document 2, a thermal welding device is provided as a connecting means for the film of the supply film roll and the film of the preliminary film roll, and a predetermined amount of the film roll being supplied is consumed. When it is detected, the seal member is actuated so that they are in close contact with each other, and the film being supplied and the film that is waiting are welded together to connect the film and at the same time switch to a new film roll. There is an advantage that it is possible to switch the spare film roll without stopping.

However, when a normal film is unwound, the film is supplied while being peeled off from the roll of film wound in a roll shape. since pull peel condition or bought a constant, peels off the film position is the state in which fluctuate relative to the film roll. For this reason, it may affect the packaging operation of the packaging machine on the film withdrawal side. For example, the distance from the position where the film is peeled off from the film roll to the drawing roller varies with respect to the drawing amount of the film that is driven at a substantially constant speed by the rotation of the drawing roller of the packaging machine. There may be a tension to be too tight is film reversed or loose film to change, directly fluctuations in the tension, with the rotation of the heat-sealing rolls provided on the heat sealing mechanism of a packaging machine When performing heat sealing, there is a possibility of adversely affecting the sealing state of the film.

The present invention aims to provide a film feeding apparatus capable of stably performing film switching operation while stabilizing film feeding, focusing on the conventional problems, and achieves this object. Therefore, the film feeding apparatus of the present invention includes a support frame that is rotatably provided with a rotation support shaft as an axis, and on the support frame , one film roll is brought into a supply state at a supply position, and the other film is provided. as a wait state a role in the standby position, and the roll support portion for supporting the removably to enable guiding each film roll unwinding the film of the film roll and the outer peripheral surface of the film roll in the standby state side non contact, and the set as the outer peripheral surface of the film roll in the supply state side guides pulled out the film becomes contact with Each contact rollers which are, and the respective contact rollers rotatably supported on one side of for each spindle, and each oscillating frame said swingably supported to the axles as a base point , of each oscillating frame, wherein provided on the side opposite the contact roller support shafts as a base point, the swings urging each oscillating frame, the film roll in a standby state side Each weight that brings the outer peripheral surface and the abutting roller into a non-contact state while the outer peripheral surface of the film roll on the supply state side and the abutting roller are in contact with each other, and provided opposite to each weight is, said each spindle abuts, formed by a respective stopper member for setting a swing range of each swing frame on the side the outer peripheral surface of the film roll and the contact roller and the non-contact state . (Claim 1)

The film feeding device of the present invention, in the film feeding device according to claim 1, wherein the unwound from the position of the roll support portion, for temporarily fixed support at the guide state pulled out the film leader side of the film roll in a standby state A standby film holding unit is provided. (Claim 2)

Furthermore, the film feeding apparatus of the present invention is the film feeding apparatus according to claim 2, wherein the film roll is in the supply state at a position upstream of the film from the position of the standby film holding section, A thermal welding and fusing mechanism that connects the start side of the film roll of the film roll in the standby state by thermal welding and enables the surplus portion of the film located on the end side of the film roll in the supply state to be fused. It is characterized by comprising a film connecting portion made of (Claim 3)

Furthermore, the film delivery apparatus of this invention is the film delivery apparatus of Claim 3, After the connection operation | movement of the film roll film in the said standby state and the film roll film in the said supply state by the said film connection part in, in order to make transition to film roll which is in the standby state in which the side to be guided feeding the switched by the continuous discharge side to the supply state of the one film roll, the film roll in said supply condition is characterized in that the rotary shaft based on a detection signal from the remaining amount of the film provided with a rotation mechanism for reversing operation of the support frame as the axial center. (Claim 4)

Furthermore, the film feeding device according to the present invention is the film feeding device according to claim 1, wherein the distance between the support shaft provided on the swing frame and the contact roller is set to be equal to the support shaft and the roll support portion. It is characterized by being set to be equal to or slightly shorter than the distance. (Claim 5)

The film feeding device according to the present invention includes a support frame that is rotatably provided with a rotation support shaft as an axis, and on the support frame , one film roll is brought into a supply state at a supply position, and the other film is provided. as a wait state a role in the standby position, and the roll support portion for supporting the removably to enable guiding each film roll unwinding the film of the film roll and the outer peripheral surface of the film roll in the standby state side non contact next, and the contact roller and the outer circumferential surface of the film roll in the supply state side is provided so as to pull-out guide by inverting the film becomes contact state, each supporting the respective contact rollers rotatably supported on one side of the axis, and wherein each oscillating frame which is swingably journalled each shaft as a base point, of each oscillating frame Wherein provided on the side opposite the contact roller support shafts as a base point, the swings urging each rocking frame, and the contact roller and the outer peripheral surface of said film roll in a standby state side one of the non-contact state, and each spindle to contact the outer circumferential surface and said abutment roller of the film roll in the supply state side, provided opposite the each spindle, in contact with the respective spindle And a stopper member for setting a swing range of each swing frame on the side where the outer peripheral surface of the film roll and the contact roller are not in contact with each other , so that from the film roll to the film roll when feeding the can, the contact rollers through the film is pulled out guided inverted in a state where contact roller to the outer peripheral surface of the film roll is in contact with the supply state side, thereby the film is either the film roll Pull distance from the position to the contact roller is peeled it is possible to minimize the tension fluctuation of the film to become not fluctuate Runode, Ri Do can be performed feeding of stable film, also film roll in a standby state by abutting rollers against the outer peripheral surface is kept in non-contact state, when the film roll exchange when lost film roll of the supply side, removed the roll core has disappeared film from the roll support unit after the, the film roll to be set in the stand-by side, in the roll supporting portion without contacting the abutting roller side can be easily set, can be achieved therefore intended purpose.

That is, in the present invention according to claim 1, when the film is fed out from the film roll, the contact roller is arranged in contact with the outer peripheral surface of the film roll on the supply state side, by configuring as described above . Since the film is drawn out and guided through the contact roller, even if the close contact state between the films is slightly different, or even if the film is not peeled off due to the influence of static electricity, etc., the contact roller The film is fed out by reversing, and the distance from the position where the film is peeled off from the film roll to the contact roller does not fluctuate, so that the film is fed out while suppressing the looseness and extreme tension of the film. As a result, fluctuations in film tension can be minimized and stable film Ri it is possible to perform. Further, by the contact rollers against the outer peripheral surface of the film roll in a standby state is maintained in the non-contact state, at the time of film roll exchange when there are no more film roll on the supply side, it disappeared film from the roll support unit after removal of the roll core has, can be easily set on the roll support unit without its film roll to be set in the stand-by side, which indiscriminately abutting roller side contact.

In the second aspect of the invention, fed from the position of the roll support portion, by providing the waiting film holding section for temporarily fixed support at the guide state pulled out the film leading end side of the film roll in a standby state When the supply side film runs out, the film roll can be easily switched and the film can be sent out from the standby side film roll .

Further, in the present invention as defined in claim 3 , the film roll end film side in the supply state and the film roll film in the standby state at the position upstream of the film from the position of the standby film holding section A film connecting portion comprising a thermal welding and fusing mechanism that connects the start end side by thermal welding and enables the surplus portion of the film located on the terminal end side of the film roll in the supply state to be fused. In addition , it is possible to easily connect the end side of the supply side film and the start side of the standby side film by heat welding without requiring an adhesive tape for connection and the supply state. The surplus portion of the film located on the terminal end side of the film roll can be cut off and cut off.

Further, in the present invention as claimed in claim 4, after the film connecting portion is connected to the film roll film in the standby state and the film roll film in the supply state by the film connecting portion, the film roll is switched and continuously transferred. to make transition to the supply state of the one film roll film roll which is in the standby state in which the side which is feeding into the guide, based on a detection signal from the remaining amount of the film of the film roll in said supply condition by providing a rotation mechanism for reversing operating the support frame to the rotation axis as a center axis, based on a detection signal from the remaining amount of the film, simply to switch operation of the film roll in next standby state to prepare It becomes possible.

In the present invention, the distance between the support shaft provided on the swing frame and the contact roller is set to be equal to or slightly shorter than the distance between the support shaft and the roll support portion . by, when unwinding the film from the film roll, because the film is drawn out guided by inverting through a contact roller disposed in contact with the outer peripheral face of the film roll in the supply state side, draw the film A pressing force is applied from the abutment roller side to the roll support side in accordance with the operation, which makes it possible to pull out the film without loosening. As a result, it is possible to suppress the film tension fluctuation as much as possible, and to stabilize the film. Can be sent.

Hereinafter, per an embodiment of the film feeding device according to the present invention will be described with reference to the accompanying drawings.

1 to 8 show a first embodiment of the present invention, in which the film feeding apparatus according to the first embodiment is applied to a filling and packaging machine . The film feeding apparatus and the filling and packaging machine will be described below. The schematic configuration and operation will be described in detail with reference to FIGS.

In the same figure, as the structure of the overall outline of the filling and packaging machine J, on the upper side of the main body side of the filling and packaging machine J, the film F1 fed back from a film roll, which will be described later, and fed is folded in two. A mechanism 1 is provided, and the film F1 folded back by the film folding mechanism 1 is sent out by a pair of vertical heat sealing rolls 2A by the vertical sealing mechanism 2 while the folded ends of the film F1 are heat-sealed in the vertical direction, The sealed film F1 is sealed in the cylindrical film F1 while being heat-sealed at a predetermined interval in the horizontal direction by a seal portion 3A provided on a pair of horizontal heat seal rolls by the horizontal seal mechanism 3. way or four-way packaged articles is by the film F1 by filling the packed material from the nozzle 4A provided in the filling mechanism 4 After sealed with packing bag P is formed continuously, is constructed the middle of the transverse seal portion of the continuous packaging bag P as film packaging material to be packaged is performed by cutting by the cutter mechanism 5 ing.

The body side of the filling and packaging machine J, is equipped with a film feeding device T is, this film feeding device T, at least one of the film roll R1 side and the supply state, standby state and the other film roll R2 side a film support portion 10 which enables the feeding guide boiled, a standby film holding portion 20 for temporarily fixed held by guide state pulled out the film leading end FS2 side of the film roll R2 in the standby state is unwound from the film bearing 10, Heat is applied to the end FE1 side of the film roll R1 in the supply state and the start end FS2 side of the film F2 of the film roll R2 in the standby state from the position of the standby film holding unit 20 to the upstream side of the films F1 and F2. The film F1 which is connected by welding and is located on the terminal end FE1 side of the film roll R1 in the supply state The film connecting portion 30 that enables the surplus portion FY1 to be melted, the end portion FE1 side of the film F1 of the film roll R1 in a supply state by the film connecting portion 30, and the start end portion FS2 side of the film F2 of the film roll R2 in a standby state After the film end separating portion 40 that can separate the surplus portion FY1 of the film F1 of the film roll R1 that is in the supply state and the film F1 of the film roll R1 that is on the supply side disappears, A rotation mechanism 50 for reversing the film support 10 is provided for switching to the film F2 of the film roll R2.

  The film support portion 10 in the first embodiment is composed of a shaft portion that rotatably supports a film roll R1 that is a supply side and a film roll R2 that is a standby side wound around a support frame 11 in a roll shape. Two roll support portions 12 and 12 are provided, and the belt-like film F1 is fed out from the film roll R1 in one supply state supported by the roll support portions 12 and 12 so as to be fed out to the carry-out side. The belt-like film F2 is provided in a standby state so that it can be pulled out from the other film roll R2 in the standby state.

  Each of the roll support portions 12 and 12 is a braking means comprising an electromagnetic powder brake or the like for braking the rotation of the film rolls R1 and R2 while supporting the film rolls R1 and R2 so that the film rolls R1 and R2 can be rotated. B is provided, and each film F1, F2 is configured to be pulled out while hanging a predetermined brake without idling when the films F1, F2 are pulled out.

  Further, on the support frame 11, support shafts 13 and 13 are provided in directions orthogonal to the line connecting the roll support portions 12 and 12, respectively, and the swing frame is swingable about the support shafts 13 and 13 as base points. 14 and 14 are pivotally supported. Further, it is possible to rotate to one end side of each swing frame 14, 14 supported so as to be swingable with respect to each support shaft 13, 13 and to be able to contact the outer peripheral surface of each film roll R 1, R 2. Contact rollers 15 and 15 are provided, and weights 16 and 16 are respectively provided at the ends of the swing frames 14 and 14 on the other end side (the side opposite to the contact roller 15). Stopper members 17 and 17 for setting the swing range are provided on the support frame 11 side so as to face the weights 16 and 16.

  The distance between the support shaft 13 provided on the swing frame 14 and the contact roller 15 is set to be equal to or slightly shorter than the distance between the support shaft 13 and the roll support portion 12. . That is, as a positional relationship in which the contact roller 15 is disposed in contact with the outer peripheral surface of the film roll R1 on the supply state side, the contact is made at a position shorter than a tangential position connecting the support shaft 13 and the outer peripheral circle of the film roll R1. The roller 15 side is installed.

  The weight balance is set so that the weights 16 and 16 are slightly heavier than the abutment roller 15 that is pivotally supported at one end of the swing frames 14 and 14 with the respective support shafts 13 and 13 as base points. The weight balance (unbalance) is provided so that the contact roller 15 side comes into contact with the outer peripheral surface of the film roll R1 on the supply side and the film F1 is suppressed by a predetermined pressing force. At this time, the stopper member 17 on the supply side of the film F1 and the weight 16 are kept apart. On the side of the film roll R2 that is the standby side, the weight 16 is maintained on the lower side with the support shaft 13 as a base point and abuts against the stopper member 17. At this time, the film roll that is the standby side The outer peripheral surface of R2 and the contact roller 15 side are provided so as to maintain a non-contact state.

  Therefore, the film roll R1 on one side of the supply state supported by the roll support portion 12 comes into contact with the outer peripheral surface of the film roll R1, is pulled out via the contact roller 15 that pulls out and guides the film F1, and then The film F1 is guided to the support shaft 13 side of the swing frame 14 and is sequentially fed out to the filling and packaging machine J side. Further, the film F2 of the other film roll R2 in the standby state is configured to be drawn out and guided to the standby film holding unit 20 side through the guide roll 18.

  Further, as described above, the rotation mechanism 50 for switching to the film F2 of the film roll R2 on the standby side after the film F1 of the supply film roll R1 is lost is provided, and the rotation mechanism 50 in this embodiment includes: A rotation support shaft 51 for rotational drive is provided at the center of the support frame 11 that supports the film rolls R1 and R2. The rotation support shaft 51 has an endless chain or pulley attached to a motor 52 serving as a drive source. Are connected through. In this embodiment, the support frame 11 is rotated 180 degrees in the clockwise direction in accordance with the film switching operation through the rotation support shaft 51 by the operation of the motor 52 as the drive source.

The standby film holding portion 20 is provided with a plate 22 for temporarily fixing via a film start end portion FS2 on a frame 21 that supports the film start end portion FS2 side which is a standby side along the width direction. In this embodiment, the end portion of the film start end portion FS2 is held by the weight of the plate 22 itself. However, although the plate 22 is not shown, the end portion of the film start end portion FS2 is formed between the plate 22 and the frame 21 by the operation of the cylinder. or scissors with hold the, or the plate 22 itself magnetized, even or as lightly hold clamped the end of the film beginning FS2 by magnetic coupling between the frame 21 Good.

Further, the film connecting portion 30 composed of a thermal welding / thermal fusing mechanism is opposed to the other side in a pair with the sealing plate 31 provided with a sealing member 31A for heat sealing at least one side. The seal receiving plate 32 is provided so that it can be moved back and forth (reciprocated) by the cylinder 33 so that it can be opened and closed with the seal plate 31. As the sealing member 31A in this embodiment, an impulse sealing method is used in which the film is heated only for a predetermined time.

  Further, as the films F1 and F2 in the first embodiment, for example, a laminate layer composed of a base film layer made of a nylon resin film and a sealant layer made of a low density polyethylene resin film is used. Films F1 and F2 are wound into rolls to form film rolls R1 and R2, and the heating time of the sealing member 31A provided on the seal plate 31 in accordance with various conditions such as the thickness and width of the films F1 and F2 Is set.

  Further, at the time of thermal welding between the film F1 end side FE1 side of the film roll R1 which is the supply side and the film roll R2 start side FS2 side of the film roll R2 which is the standby side, the supply film roll R1. In order to make it possible to separate the surplus portion FY1 of the film F1, a film end separating portion 40 for applying a tension is provided. The film end separating portion 40 is provided with a pressing plate 41 serving as a pressing member along the width direction of each of the films F1 and F2. The pressing plate 41 side is pressed against the film F1 or separated. A cylinder 42 is provided as a driving means that can reciprocate.

At this time, the film F1 drawn and guided from the film roll R1 on the supply side is braked on the roll support portion 12 by the braking means B including an electromagnetic powder brake for braking the rotation of the film roll R1. Therefore, the film F1 is guided to be pulled out without loosening, but a predetermined tension is further applied by pressing the end portion FE1 side of the film F1 from the lateral direction by the forward movement of the pressing plate 41 of the film end separating portion 40. It is configured as follows.

Further, an accumulating means 60 and a film for laying out the film F1 with a margin between the film connecting portion 30 comprising the heat welding / cutting mechanism and the film folding mechanism 1 of the filling and packaging machine J are provided. A tension setting means 70 that swings and moves according to the tension of F1 is provided. In this case, the accumulating means 60 includes a fixed roller 61 side and a movable roller 62 side that can move up and down, and the standby side after the film connecting portion is activated or the film F1 of the supply film roll R1 is lost. The length of the conveyance path between the rollers 61 and 62 when the rotation mechanism 50 for switching to the film F2 of the film roll R2 is operating, that is, when the feeding of the film F1 on the supply side is stopped. the film F1 while changing constitute to deliver to the filling and packaging machine J side via a tension setting means 70.

  The roll support portions 12 and 12 provided on the support frame 11 of the film support portion 10 are provided with rotation detection means S for detecting the remaining amount of the film, and particularly the film roll R1 on the supply side. As means for detecting the presence or absence or the remaining amount, in this embodiment, the outer dimensions of the film roll R1 obtained from the transfer speed of the film F1 and the rotation speed of the roll support portion 12 (rotation detection means S) are calculated and detected. The presence / absence or remaining amount of the film F1 is detected based on the result of the detection signal obtained from the rotation speed. When the consumption state of the film F1 is detected in this way, the feeding of the film F1 is stopped so as to switch from the film F1 of the film roll R1 to the film roll R2 on the standby side, and a pair of seal plates formed by the film connecting portion 30 is formed. 31 and the seal receiving plate 32, and the pressure plate 41 of the film end separating portion 40 is moved forward to apply tension to the film F1, and then provided on the seal plate 31 of the film connecting portion 30. The sealing member 31A is energized for a predetermined time in accordance with the conditions of the films F1 and F2, so that the films F1 and F2 are fused and connected, and the surplus portion FY1 side of the film F1 is fused from the heat welding location. It is configured.

  In the above-described configuration, the operation of the film feeding device, which is the main part of the present invention, equipped in the filling and packaging machine will be mainly described.

Referring to FIG. 1, first, in the film rolls R1 and R2 set in the film support portion 10, when the film F1 is fed out from the film roll R1 on the supply side, the contact roller 15 is brought into contact with the outer peripheral surface of the film roll R1. Is reversed in the contact state, and the film F1 is drawn out and guided, and the drawn out film F1 is guided along the outer surface of the support shaft 13 to the filling and packaging machine J, which is the unloading side, and is fed out from the film roll R1. Then, the supplied film F1 is supplied to the film folding mechanism 1 that folds the film F1 in half, and the film F1 folded by the folding mechanism 1 is turned back by the pair of vertical heat seal rolls 2A by the vertical sealing mechanism 2. The parts were sent out while being heat sealed in the vertical direction, and were vertically sealed and formed into a cylindrical shape The film F1 is packaged from a nozzle 4A provided in the filling mechanism 4 in the film F1 while being thermally sealed at a predetermined interval in the lateral direction by a seal portion 3A provided in a pair of horizontal heat seal rolls by the horizontal seal mechanism 3. By filling the object, the packaging bag P is continuously formed while the object to be packaged is sealed in three or four directions by the film F1. By cutting the middle part of the horizontal sealing portion of the continuous packaging bag P by the cutter mechanism 5, the packaging bags P filled with the articles to be packaged are sent out while being separated one after another.

  In this case, when the film F1 is fed out from the film roll R1, the weight unbalanced weight due to the weight 16 is transferred to the film roll R1 side via the contact roller 15 on the outer peripheral surface of the film roll R1 on the supply state side. Since the film F1 is reversely guided from the film roll R1 through the contact roller 15 in this state by being arranged in contact with the film roll R1, the film F1 is pulled out and guided in this state. Even if the close contact states of the F1s are slightly different, or even if the film F1 is not peeled off due to the influence of static electricity, the film F1 can be prevented from loosening and extreme tension. F1 tension fluctuation can be suppressed and stable film F1 feeding It becomes possible. As shown in the first embodiment, the distance between the support shaft 13 provided on the swing frame 14 and the contact roller 15 is set equal to or slightly shorter than the distance between the support shaft 13 and the roll support portion 12. Thus, when the film F1 is fed out from the film roll R1, the film F1 is reversed and guided through the contact roller 15 disposed in contact with the outer peripheral surface of the film roll R1 on the supply state side. Therefore, in accordance with the pulling-out operation of the film F1, a force for pressing the contact roller 15 side toward the roll support portion 12 acts, and in addition to the pressing force of the contact roller 15 toward the film roll R1 side by the weight 16 When the pressing force acting in accordance with the drawing operation of the film F1 is applied toward the center side of the film roll R1, the film F1 is further stabilized. It becomes possible to draw out not only, as a result tension fluctuation of the film F1 and can be suppressed as much as possible, it is possible to perform the feeding of the stable film F1.

By the way, when the film F1 for packaging is consumed and becomes less than a predetermined amount, the rotation speed of the roll support portion 12 is increased, and the film F1 depends on the transfer speed of the film F1 and the interval of detection signals by the rotation detection means S. When the outer diameter of the roll R1 is calculated and it is detected that the remaining amount of the film F1 is equal to or less than a predetermined amount, the feeding of the film F1 of the film roll R1 on the supply side is first stopped based on the detection signal. . Next, as shown in FIG. 2, the cylinder 33 of the film connecting portion 30 is actuated to move the seal receiving plate 32 forward, and this movement pushes the film start end FS <b> 2 side which is the standby side, and the standby film holding portion 20 The film start end portion FS2 sandwiched between the frame 21 and the plate 22 in the temporarily fixed state comes out, and the film start end portion FS2 side and the end portion FE1 side of the supply film F1 fed out form a pair. sandwiched between the sealing plate 31 and the seal receiving plate 32 Nasu and Ru are retained.

In this state, the pressing plate 41 of the film end separating portion 40 is moved forward by the cylinder 42 to apply tension to the film F1, and is heated for a predetermined time by the sealing member 31A (impulse sealing method) provided on the sealing plate 31. by, two films F1, F2 is Ru are connected by melting while overlapping.

At this time, since the end portion FE1 of the supply film F1 is pushed from the lateral direction by the pressing plate 41 of the film end separating portion 40, the film F1 is gradually heated by the seal member 31A and melted. Since the tension | pulling force by a tension effect | action is applied to the location where it exists, as shown in FIG. 3, the film F1 is cut away from the melting location.

Thus, by applying a predetermined tension to the excess portion FY1 of the film F1, better and easier, can be heated to separate the film F1 from where the molten state (excess portion FY1). Further, after the supply-side film F1, which is the surplus portion FY1, is cut off, as shown in FIG. 4, the cylinder 33 of the film connecting portion 30 is operated to move the seal receiving plate 32 backward, and the film end cutting portion 40 is also moved. the pressing plate 41 returns to the initial position by rearward movement by the actuation of the cylinder 42 of the.

Then, based on the detection signal based on the remaining amount of the film F1 on the supply side , the rotation mechanism 50 is provided as shown in FIGS. 5 to 7 for switching to the film F2 of the film roll R2 on the standby side . a rotary shaft 51 of the motor 52 driven to rotate as a driving source which are by half turn in the clockwise direction, the supply side of the film roll R1 is initially set feed side, waits until now and a state in which the film roll R2 has been transferred, the film from the film roll R2 in this state, Ru freshly fed as a film F1 for supplying as before switching.

At this time , as shown in FIG. 5 , when the support frame 11 rotates clockwise from the state of FIG. 4, the outer peripheral surface of the film roll R1 on which the contact roller 15 on the supply side has been the supply side has been provided. It will be in a state of getting away from. That is, as the support frame 11 rotates, the weight balance is set so that the weight 16 side is slightly heavier with respect to the contact roller 15 with the support shaft 13 as a base point. The balance is maintained by lowering and adjusting, and the stopper member 17 provided on the support frame 11 side maintains a contact state with the weight 16 as the support frame 11 rotates with respect to the weight 16. At this time, the film start end portion FS2 of the film roll R2 on the standby side is pushed by the contact roller 15 disposed on the standby side and is brought into contact with the contact roller 15. weight 16 disposed on the side opposite contact roller 15 side is maintained to abut against the stopper member 17.

Furthermore, by the support frame 11 is rotated operation, the support frame 11 while sustaining far removed state from the outer peripheral surface of the film roll R1 abutment roller 15 on the side that was supplied film F1 was supply side ever continued rotation operation, then, as shown in FIG. 6, the film roll R2 side is a stand-by side to date, at immediately before the support frame 11 rotates operated 180 degrees clockwise, the supply side and the standby side positional relationship are swapped, the same time, ing a state where contact roller 15 contacts the outer peripheral surface of the migrated film roll R2 (R1) on the supply side.

Then, when the support frame 11 side reverses and rotates and stops 180 degrees clockwise, as shown in FIG. 7 , the positional relationship between the supply side and the standby side is completely switched. That is, on the supply side of the film F1, the swing frame 14 is reversed from the state in which the weight 16 is in contact with the stopper member 17 provided on the support frame 11 with the support shaft 13 as a fulcrum, so that the stopper member 17 and the weight 16, the contact roller 15 supported by the swing frame 14 comes into contact with the outer peripheral surface of the film roll R2 (R1) and is subjected to a predetermined pressing force (unbalanced by the weight 16). The film F1 is newly fed from the film roll R1 set on the supply side to the filling and packaging machine J side while maintaining the film F1 to be suppressed.

Then, the roll core of the empty film roll R1 supported by the roll support portion 12 including the shaft portion provided on the support frame 11 reversed by the rotation mechanism 50 is removed, and the new film roll is supported by the roll. by setting the section 12, as shown in FIG. 8, prepare the following film roll R2 to wait side, Ru can be provided to the depletion of the film F1 of film roll R1 of the supply side.

At this time, by disposing the contact roller 15 in a non-contact state with respect to the outer peripheral surface of the film roll R2 in the standby state , when the film F1 of the film roll R1 on the supply side disappears during the film roll replacement, roll after removal of the roll core which has disappeared film F1 from the support portion 12, the roll support 12 without contacting the film roll R2 to be set in the stand-by side recklessly and the contact roller 15 side It can be easily set and can be easily fed without damaging the film.

Further , in the film feeding apparatus according to this embodiment, the supply side film roll and the standby side film roll are sequentially fed in the longitudinal direction with reference to the film support portion 10 that is detachably supported so as to be able to be fed out. A film end separating portion 40 that enables separation of the surplus portion FY1 of the film F1 of a certain film roll R1, and a start end portion FS2 of the film F2 of the film roll R2 that is the standby side and the end portion FE1 side of the film roll R1 that is the supply side Of the film roll R2 on the standby side and the film connection portion 30 on the standby side, which enables the surplus portion FY1 of the film F1 located on the terminal end FE1 side of the film roll R1 on the supply side to be fused. A standby film holding portion 20 that temporarily holds the film start end portion FS2 side in a pull-out guide state; By providing aligned with base, there is also an effect that can be made compact without a large space.

In addition , this invention is not limited to the said Example, A various deformation | transformation implementation is possible within the range of the summary of this invention. For example, in the above-described embodiment, the film support portion 10 that supports the film roll R1 for supply and the film roll R2 for standby in a detachable manner so as to be capable of being sequentially fed out and detachably supported is exemplified. As described above, even if the number of film rolls is three or more, it is possible to set the film rolls so that they can be exchanged sequentially, and the support shaft provided on the swing frame 14 according to the material and thickness of the film. The distance between the contact roller 15 and the contact roller 15 may be set as appropriate, and the width and shape of the sealing mechanism of the film connecting portion 30 or the sealing time and timing are also appropriately determined according to the material and thickness of the film. What is necessary is just to set, and the further effect can be anticipated by the combination of the component of the said Example.

Further , in the above embodiment, as means for detecting the presence / absence or remaining amount of the film roll, it is calculated from the outer dimensions of the film roll R1 obtained from the transfer speed of the film F1 and the rotation speed of the roll support portion 12, and Although the remaining amount was detected, an optical sensor was installed on the side of the film roll, and the light was reflected directly on the side of the film roll on the supply side, so that the film consumption (remaining amount) was constant. It may be set so that light cannot be reflected when the degree is exceeded, and it may be switched by sending a signal to the processing device at this time, and a tension sensor is used as a sensor for detecting the remaining amount of film. It may be detected.

Further , in the above embodiment, the film is reversed and guided through the contact roller 15 arranged in contact with the outer peripheral surface of the film roll on the supply state side, and then the support frame 13 side of the swing frame 14 Although the film F1 is configured to be sequentially fed to the filling and packaging machine J side is guided to rotatably inserted through the free rollers on a support shaft 13, the film F1 to the free rollers when the transfer of the film F1 May be configured so that the film F1 can be smoothly fed out by the smooth rotation of the free roller. The contact roller 15 is provided on one end side of the swing frame 14 and the weight 16 is provided on the other side with the support shaft 13 as a base point, but depending on the length and shape of the swing frame 14, even when the swing frame 14 itself constructed as double as serving of the weight has good. Further, the swing frame 14, although the contact roller 15 side is to adjust the pressing force of the contact roller 15 to the film roll R1 by a weight 16 provided at the end opposite to the proper load, the The proper load can be applied without the contact roller 15 being separated from the outer peripheral surface of the film roll R1 when the film F1 is fed, and the contact roller 15 rotates smoothly when the film F1 is conveyed. The load is set so as not to become the resistance force of the supply of the film F1 with the film roll R1, and this setting is adjusted by the mounting position, the weight, etc. of the weight 16.

In the above-described embodiment, the film feeding device of the present invention has been described as an example applied to a filling and packaging machine. However, the film feeding device of the horizontal pillow packaging machine can also be used as a mechanism for connecting film rolls to each other. Is something that can be done.

BRIEF DESCRIPTION OF THE DRAWINGS It is a whole schematic front view which shows the film delivery apparatus which applied the 1st Example of this invention to the filling packaging machine. It is the operation | movement front view which showed the operation state of the film connection part in the film delivery apparatus of FIG. It is the operation | movement front view which showed the cutting state of the film which is a supply side in the film delivery apparatus of FIG. It is the operation | movement front view which showed the return operation state of the film edge separation part in the film delivery apparatus of FIG. It is the operation | movement front view of the principal part which showed the reversal transition state of the film roll in the film delivery apparatus of FIG. It is the operation | movement front view which showed the switching transition state of the further film of FIG. It is the operation | movement front view which showed the switching return state of the film delivery apparatus in FIG. It is the front view which showed the state which set the film roll by the side of a standby in the roll support part in FIG.

DESCRIPTION OF SYMBOLS 10 Film support part 11 Support frame 12 Roll support part 13 Support axis 14 Oscillating frame 15 Contact roller 16 Weight 17 Stopper member 18 Guide roll 20 Standby film holding part 21 Frame 22 Plate 30 Film connection part 31 Seal plate 31A Seal member 32 Seal receiving plate 33 Cylinder 40 Film end separating portion 41 Press plate 42 Cylinder 50 Rotating mechanism 51 Rotating support shaft 52 Motor 60 Accumulating means 70 Tension setting means F1, F2 Film FE1 End portion of film F1 FS2 Start end portion of film F2 FY1 Surplus Part R1 Film roll on the supply side R2 Film roll on the standby side

Claims (5)

Provided with a rotatably supporting frame provided with a rotary shaft as a center axis,
On this support frame ,
One of the film roll and the supply state in the supply position, the other of the film roll as a wait state at the standby position, the roll supporting portion for supporting removably said guidably each film roll unwinding the film of the film roll When,
Non-contact state becomes the outer peripheral surface of the film roll in the standby state side, each contact of the outer peripheral surface of the film roll in the supply state side is provided so as to guide the drawer the film becomes contact with Laura,
The each person to contact roller rotatably supported on one side of for each spindle, and wherein each oscillating frame which is swingably journalled each shaft as a base point,
Of each oscillating frame, the provided opposite side to the respective contact rollers each shaft as a base point, the swings urging each oscillating frame, the outer circumference of the film roll in a standby state side Each weight that brings the outer surface of the film roll on the supply state side into contact with the contact roller while bringing the surface and the contact roller into a non-contact state ;
A swing range of each swing frame is provided so as to face each of the weights and comes into contact with each of the weights so that the outer peripheral surface of the film roll is not in contact with the contact roller. Each stopper member ;
Ru film feeding device name with a. Film according to claim 1, characterized in that the fed out from the position of the roll support portion, provided with a stand-film holding section for temporarily fixed support at the guide state pulled out the film leader side of the film roll in said standby state Feeding device.   The end of the film roll in the supply state is connected to the start end of the film roll in the standby state by thermal welding at a position upstream from the position of the standby film holding portion. 3. A film connecting portion comprising a thermal welding / melting mechanism capable of fusing an excess portion of the film located on the terminal end side of the film roll in the supply state. Feeding device. After the connecting operation of the film roll film in the standby state and the film roll film in the supply state by the film connecting portion , the film switching portion is switched and continuously becomes the side to be guided to be fed out to the carry-out side. to make migrate film roll in the standby state to the supply state of the one film roll, the support frame of the rotating shaft as a shaft center on the basis of a detection signal from the remaining amount of the film of the film roll in said supply condition 4. A film feeding apparatus according to claim 3, further comprising a rotation mechanism for reversing the rotation of the film. The distance interval between the support shaft and the contact rollers provided on the swing frame, in claim 1, characterized in that the distance is equal to or set slightly shorter and the support shaft and the roll support unit The film feeding device described.

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