JP2009096593A - Accumulator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an accumulator for preventing disturbance of a lamination condition of a belt-like film in an accumulation box even when a moving speed of the belt-like film becomes high, in an accumulator for laminating the belt-like film extending between an upstream side device and a downstream side device on the accumulation box. <P>SOLUTION: In this accumulator, a film folding device for folding a belt-like film fed from an upstream side device onto a bottom surface of an accumulation box 2 under a laminated condition while feeding it inside the accumulation box 2 is arranged at an upper position of the accumulation box 2. An outlet 20a is opened at a center of the bottom surface of the accumulation box 2, and the belt-like film in the accumulation box 2 is pulled downward from the outlet 20a and supplied to the downstream side device. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention provides a belt-like film that is installed between an upstream device that feeds a belt-like film and a downstream device that receives the belt-like film fed from the upstream device, and extends between the upstream device and the downstream device. The present invention relates to an accumulator that accumulates as necessary.

  For example, a container such as a bottle containing drinking water is covered with a cylindrical label made of a synthetic resin film such as a shrink label or a stretch label so as to cover the outer peripheral surface, and the contents are printed by printing on the label. Display of the component of a thing, the date of manufacture, etc. is performed.

  In the process of attaching such a cylindrical label to a container such as a bottle, a belt-like film is prepared in advance, which is folded into a sheet with the cylindrical label continuously connected, and the belt-like film is rolled. The belt-like film is fed out from the substrate roll wound in a shape, and the belt-like film is sequentially cut to form a cylindrical label, and the cylindrical label is attached to a container such as a bottle.

In such a process, it is necessary to periodically replace the base material roll. In order to continue the mounting of the cylindrical label without interruption even during the replacement work, as shown in FIG. Between the film delivery device (91) for feeding the belt-like film and the labeling device (92) for cutting the belt-like film sequentially to form a cylindrical label and mounting the cylindrical label on a container such as a bottle. Is installed.
When exchanging the base roll, a certain amount of belt-like film is accumulated in the accumulator (9) by the operation of the film delivery device (91), and then the belt-like film accumulated in the accumulator (9) is labeled with the labeling device (92 The base roll is exchanged in the film delivery device (91) within the period of time being supplied to).

  A specific configuration of the film delivery device (91) is proposed in Patent Literature 1 and Patent Literature 2, and a specific configuration of the labeling device (92) is proposed in Patent Literature 3.

As shown in FIG. 14, the conventional general accumulator (9) includes an accumulator box (93) for accumulating a belt-like film. During accumulating operation, the accumulator box (93) passes through an inlet roller (94). The belt-shaped film is fed into the accumulator box (93) and discharged to the outside of the accumulator box (93) through the exit roller (95) installed above the accumulator box (93). . On the other hand, during the through operation, the belt-like film is moved directly from the inlet roller (94) to the outlet roller (95) and is not accumulated in the accumulator box (93).
Japanese Patent Laid-Open No. 2004-10211 JP 2007-62920 A Japanese Patent No. 3670477

  However, in the accumulator (9) shown in FIG. 14, the belt-like film is merely put into the accumulator box (93) at random, and the belt-like film is pulled out from the bottom of the accumulator box (93). Therefore, the belt-like film is in a messy state in the accumulator box (93) and may be entangled with each other during the drawing process to cause twisting or bending.

  Therefore, the present inventors have succeeded in developing an accumulator that does not cause twisting or bending of the belt-like film during accumulating operation (Japanese Patent Application No. 2007-192911). As shown in FIG. 13 (a), the accumulator is configured by disposing a film feeding mechanism (3) and a swing arm mechanism (4) above the accumulator box (2).

The film feeding mechanism (3) includes a pair of feeding rollers (32) and (33) that rotate in reverse to each other, and sandwiches the belt-like film F between the feeding rollers (32) and (33) to provide a film feeding device (shown in the figure). The belt-like film F fed out from (omitted) is fed out toward the swing arm mechanism (4).
The swing arm mechanism (4) includes a pair of swing arms (41) and (42) disposed so as to be swingable in a vertical plane below the film feeding mechanism (3). ) (42), a belt-like film passage fed out from the film feeding mechanism (3) is formed, and the movement of the belt-like film is guided from the entrance to the outlet of the passage.

  The swing arm mechanism (4) has a swing center on the upper end side of both swing arms (41) and (42), and swings within a predetermined angle range in the vertical plane during the accumulating operation. Pendulum movement of film exit. As a result, the strip film F discharged from the exit of the strip film is folded on the plurality of support bars (22) with the pendulum movement of the exit, and is accumulated in an orderly laminated state as shown by a chain line. become.

The belt-like film F accumulated in the accumulator box (2) is discharged backward through the film discharge mechanism (7) in accordance with the operation of a labeling device (not shown) which is a downstream device.
The film discharge mechanism (7) is composed of a first outlet roller (71) and a second outlet roller (72) arranged at a rear position of the laminated film film in the accumulation box (2). Is drawn out through the film discharge mechanism (7), the drawing direction is defined so as to draw the belt-like film backward from the lowermost layer. As a result, the belt-like film in the accumulator box (2) is pulled out sequentially from the lowermost layer, and the laminated state does not collapse greatly.

  However, in the accumulator, when the moving speed of the belt-like film discharged from the accumulator box (2) through the film discharge mechanism (7) exceeds a fixed speed (for example, 50 m / min), the accumulator is pulled out rearward. The uppermost belt-like film is dragged by the lowermost belt-like film. As a result, the laminated state of the belt-like film in the accumulator box (2) is disturbed, and in some cases, the discharge of the belt-like film may be hindered. It was.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide an accumulator that does not disturb the laminated state of the strip films folded in the accumulator box even if the moving speed of the strip films discharged from the accumulator box increases. That is.

  The accumulator according to the present invention is installed between an upstream device that sends out the belt-like film and a downstream device that receives the belt-like film sent from the upstream device, and between the upstream device and the downstream device. The stretched belt-like film is accumulated inside the accumulator box as necessary, and in the upper position of the accumulator box, the strip-like film fed from the upstream device is fed into the accumulator box, A film folding device that folds in a stacked state is provided on the bottom surface, and an outlet is opened at the center of the bottom surface of the accumulator box, and the belt-shaped film in the accumulator box is drawn downward from the outlet, and the downstream device It is characterized by supplying to.

  According to the accumulator device of the present invention, the belt-like film accumulated in the accumulation state in the accumulator box is sequentially drawn from the bottom center of the bottom of the accumulator box in the lowermost layer, so that the lowermost belt-like film The upper belt-like film is not dragged. Accordingly, there is no disturbance in the laminated state of the strip film in the accumulator box, and smooth discharge of the strip film is realized.

In a specific configuration, the bottom surface of the accumulator box is formed in a circular arc shape with the highest central portion.
According to the specific configuration, in a state where the belt-like film is folded into a plurality of layers on the bottom surface of the accumulator box, the balance between the height at the two folded portions of the belt-like film and the height at the central portion between the two folded portions. Is planned. As a result, the plurality of layers of the belt-like film extend in the substantially horizontal direction and are accumulated on the bottom surface of the accumulator box with a good weight balance. Therefore, when the strip film is pulled out from the outlet at the center of the bottom surface, the strip film laminated on the bottom surface of the accumulator box does not collapse.

In another specific configuration, the film folding device includes:
A film feed mechanism for feeding the belt-like film fed from the upstream device to the accumulator box side;
A swing arm mechanism having an entrance and an exit for the strip-shaped film fed out from the film feed-out mechanism and having a strip-shaped film passage extending from the entrance to the exit, and swinging the exit side on the accumulator box around the entrance side; Consists of

  According to this specific configuration, the film feeding mechanism starts operating in the accumulating operation, the belt-shaped film is fed toward the film accommodating portion, and the swing arm mechanism starts swinging, and the exit of the belt-shaped film is connected to the pendulum. Move and release the strip film from the outlet. When the belt-like film is released from the exit of the swing arm mechanism, the outlet reciprocates on the accumulator box by the pendulum movement, so that the belt-like film discharged from the outlet is folded on the bottom surface of the accumulator box, Accumulated in a stacked state.

  In a more specific configuration, at the downstream position of the outlet opened on the bottom surface of the accumulator box, the moving path of the belt-like film is regulated so that the belt-like film is drawn downward from the outlet, and the belt-like film is disposed on the downstream side device. A film discharge mechanism that discharges toward the center is provided.

  According to this specific configuration, the belt-like film accumulated on the bottom surface of the accumulator box is discharged from the accumulator box toward the downstream apparatus as the downstream apparatus is operated. At this time, since the belt-like film is drawn out from the outlet at the center of the bottom surface of the accumulator box through the film discharge mechanism, the drawing direction is defined as the direction in which the belt-like film is drawn downward from the lower layer portion. As a result, the belt-like film in the accumulation box is pulled out from the lowermost layer in order, and the laminated state is not greatly broken.

  According to the accumulator device according to the present invention, even if the moving speed of the belt-like film discharged from the accumulator box is increased, there is no disturbance in the laminated state of the belt-like film folded in the accumulator box. The belt-shaped film in the accumulation box is discharged smoothly.

Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. First, after describing the configuration of the accumulator device previously developed by the present inventors, the configuration of the accumulator device of the present invention in which the accumulator device is improved will be described.
In the following description, the film delivery apparatus side that is the upstream apparatus is referred to as the front, and the labeling apparatus side that is the downstream apparatus is referred to as the rear. The right side from the front to the rear is simply called the right side, and the left side from the front to the rear is simply called the left side.

[overall structure]
As shown in FIG. 4, in the accumulator (1), a rectangular parallelepiped accumulator box (2) is installed at the bottom of a frame-shaped base frame (11), and a film is placed above the accumulator box (2). A feeding mechanism (3) and a swing arm mechanism (4) are provided. A film discharge mechanism (7) is provided behind the accumulator box (2).
The accumulator box (2) has an opening (21) in the upper part and an outlet (23) in the lower part of the rear vertical wall, and a belt-like film is introduced from the opening (21). Pulled out.

FIGS. 13 (a) and 13 (b) show the basic configuration and operation of the accumulator (1), and FIG. 13 (a) shows the state of the accumulator (1) during the accumulating operation. (b) has shown the state at the time of through operation of an accumulator (1).
A plurality of support bars (22) are installed horizontally on the bottom of the accumulator box (2), and a strip film is folded and accumulated on these support bars (22). These support bars (22) are juxtaposed at intervals in the front-rear direction along an arc line that swells upward, whereby two folded portions when the belt-like film is folded into a plurality of layers. Is balanced with the height at the center between the folded portions.

  The film feeding mechanism (3) includes a pair of feeding rollers (32) and (33) that rotate in reverse to each other, and sandwiches the belt-like film F between the feeding rollers (32) and (33) to provide a film feeding device (shown in the figure). The belt-like film F fed out from (omitted) is fed out toward the swing arm mechanism (4).

The swing arm mechanism (4) includes a pair of swing arms (41) and (42) disposed so as to be swingable in a vertical plane below the film feeding mechanism (3). ) (42), a belt-like film passage fed out from the film feeding mechanism (3) is formed, and the movement of the belt-like film is guided from the entrance to the outlet of the passage.
The swing arm mechanism (4) has a swing center on the upper end side of both swing arms (41) and (42), and swings within a predetermined angle range in the vertical plane during the accumulating operation. Pendulum movement of film exit. As a result, the strip film F discharged from the exit of the strip film is folded on the plurality of support bars (22) with the pendulum movement of the exit, and is accumulated in an orderly laminated state as shown by a chain line. become.

The belt-like film F accumulated in the accumulator box (2) is discharged backward through the film discharge mechanism (7) in accordance with the operation of a labeling device (not shown) which is a downstream device.
The film discharge mechanism (7) is composed of a first outlet roller (71) and a second outlet roller (72) arranged at a rear position of the laminated film film in the accumulation box (2). Is drawn out through the film discharge mechanism (7), the drawing direction is defined so as to draw the belt-like film backward from the lowermost layer. As a result, the belt-like film in the accumulator box (2) is pulled out sequentially from the lowermost layer, and the laminated state does not collapse greatly.

Thereafter, during the through operation, the forcible feeding of the strip film by the film feeding mechanism (3) is stopped and the swinging of the swing arm mechanism (4) is stopped. Further, the pair of feeding rollers (32) and (33) constituting the film feeding mechanism (3) are separated from each other, and the postures of the film feeding mechanism (3) and the swing arm mechanism (4) are as shown in FIG. The pair of feeding rollers (32) and (33) of the film feeding mechanism (3) and the pair of swinging arm mechanisms (4) are arranged on both sides across a straight path from the film feeding device to the labeling device. The swing arms (41) and (42) are arranged.
Further, the first outlet roller 71 and the second outlet roller 72 constituting the film discharge mechanism 7 are lifted, and the first outlet rollers are provided on both sides across a straight path from the film delivery device to the labeling device. (71) and the second outlet roller (72) are arranged.

  Accordingly, the belt-like film F fed from the film feeding apparatus passes through the film feeding mechanism (3), the swing arm mechanism (4) and the film discharging mechanism (7) with almost no contact with the constituent members of those mechanisms. Thus, the labeling device is reached, and the resistance received by the strip film in this process is extremely small.

[Film feed mechanism (3)]
The film feed mechanism (3) rotates the pair of feed rollers (32) and (33) by using the electric motor (10) installed on the base frame (11) as a drive source as shown in FIG. is there.
As shown in FIG. 6, a main shaft (30) extending in the horizontal direction is installed on the base frame (11), and both ends of the main shaft (30) are respectively supported by bearings (34) and (34). ) Is supported on.

As shown in FIG. 4, a movable frame (31) having a pair of left and right side plates (31a) (31b) and a back plate (31c) is pivotally supported on the main shaft (30).
Further, a support frame (35) is provided inside the both side plates (31a) and (31b) of the movable frame (31), and an air cylinder device (36) attached to the back plate (31c) of the movable frame (31). ) Rod (36a) is connected to the support frame (35).

  A first feeding roller (32) is attached to the inner side of both side plates (31a) and (31b) of the movable frame (31) so as not to rotate relative to the main shaft (30). A second feed roller (33) having a rotation axis parallel to the rotation axis of the first feed roller (32) is pivotally supported on the inner side, and the second feed roller (36) is driven by the air cylinder device (36). By reciprocating 33), the second feeding roller (33) approaches and separates from the first feeding roller (32).

As shown in FIG. 8, a driving pulley (12) is attached to the output shaft of the electric motor (10), and a driven pulley (13) is attached to the left end of the main shaft (30). ) And a driven pulley (13), a timing belt (14) is stretched.
Therefore, when the electric motor (10) is started, the rotation of the electric motor (10) is transmitted to the main shaft (30), and the first feeding roller (32) rotates with the rotation of the main shaft (30). At this time, if the second feeding roller (33) is pressed against the first feeding roller (32) by the operation of the air cylinder device (36), the second feeding roller is rotated along with the rotation of the first feeding roller (32). (33) will also rotate.

  As shown in FIG. 5, the belt-like film F fed from the upstream film feeding device (not shown) extends horizontally toward the film feeding mechanism (3), and the first feeding roller (32) and the second feeding roller. Enter between (33). Then, the belt-like film F is squeezed by the swinging arm mechanism (4) by the rotational drive of the first feeding roller (32) by the electric motor (10) in a state of being pressed between the feeding rollers (32) and (33). It is drawn out at a constant speed toward.

[Oscillating arm mechanism (4)]
As shown in FIG. 9, a swing block (51) having a pair of left and right side plate portions (51a) (51b) is pivotally supported by both side plate portions (51a) (51b) at the central portion of the main shaft (30). The above-mentioned pair of swing arms (41) and (42) are integrally projected on the swing block (51).
Therefore, when the swing block (51) swings about the main shaft (30), the lower end portions of both swing arms (41) and (42) perform pendulum movement in the vertical plane.

Each of the first swing arm (41) and the second swing arm (42) has a square frame shape as a whole, and both the swing arms (41) and (42) are predetermined in the front-rear direction. Opposite each other with a gap, a passage through which the belt-like film passes is formed between the swing arms (41) and (42).
Guide rollers that are rotatably mounted between the side plates (51a) and (51b) of the swing block (51) at the upper ends of the first swing arm (41) and the second swing arm (42), respectively. (45) is deployed horizontally. On the other hand, a guide roller (46) is disposed horizontally at the lower ends of the first swing arm (41) and the second swing arm (42).
Four wires (43) are stretched in parallel between the upper and lower guide rollers (45) and (46) of the first swing arm (41), and the second swing arm (42) Four wires (43) are stretched in parallel between the upper and lower guide rollers (45) and (46).

A driving roller (54) is attached to the outer side of the left side plate (51a) of the swing block (51) so as not to rotate relative to the main shaft (30), and the guide of the first swing arm (41). A driven roller (55) is attached to the roller (45) so as not to be relatively rotatable, and a timing belt (56) is stretched between the driving roller (54) and the driven roller (55).
Further, on the outside of the right side plate portion (51b) of the swing block (51), there are a guide roller (45) of the first swing arm (41) and a guide roller (45) of the second swing arm (42). On the other hand, gears (52) and (53) are attached so as not to rotate relative to each other, and both gears (52) and (53) mesh with each other.
Accordingly, when the rotation of the main shaft (30) is transmitted to the guide roller (45) of the first swing arm (41), the rotation of the guide roller (45) passes through the gears (52) and (53) to the second swing. This is transmitted to the guide roller (45) of the arm (42), and both guide rollers (45) and (45) rotate in opposite directions.

As a result, the wire (43) stretched between the guide rollers (45) and (46) of the swing arms (41) and (42) makes a circular movement.
Here, the four wires (43) of the first oscillating arm (41) and the four wires (43) of the second oscillating arm (42) are both oscillated as shown by a chain line in FIG. The wire (43) and (43) facing each other across the belt-like film passage between the moving arms (41) and (42) extend in the same direction as the traveling direction (downward) of the belt-like film. Will move.
The moving speed of the wire (43) is slightly higher than the feeding speed of the belt-like film by the film feeding mechanism (3), and is set within a range of, for example, 1.01 to 1.5 times. Further, a gap larger than the thickness of the belt-like film is provided between the wires (43) and (43) facing each other.

  As shown in FIG. 4, a driving roller (64) is attached to the outer side of the right side plate (31b) of the movable frame (31) so as not to rotate relative to the main shaft (30), and the driving roller (64) The driven roller (65) is pivotally supported at a lower position of the roller, and a timing belt (66) is stretched between the driving roller (64) and the driven roller (65).

As shown in FIG. 9, a shaft (63) protrudes from the driven roller (65) so as not to rotate relative to the left side, and a crank arm (61) is fixed to the tip of the shaft (63). ing. One end of the crank arm (61) is pivotally supported by a base end of a rod (62), and the tip of the rod (62) is connected to a swing block (51). The crank mechanism (6) is constituted by 61) and the rod (62).
Therefore, the rotation of the main shaft (30) is transmitted to the shaft (63), and when the shaft (63) rotates, the rotation of the shaft (63) is converted into the reciprocating motion of the rod (62), and the swing block (51 ) Is driven to swing.
As the swing block (51) swings, the first swing arm (41) and the second swing arm (42) swing within a predetermined angle range as shown in FIG.

[Posture change mechanism (8)]
As shown in FIGS. 4 and 5, an air cylinder device (80) is attached to the base frame (11), and the tip of the rod (80a) of the air cylinder device (80) is a movable frame as shown in FIG. It is connected to the left side plate (31a) of (31).
During the accumulating operation, as shown in FIG. 5, the rod (80a) of the air cylinder device (80) is held in the retracted position, and supports the movable frame (31) at a fixed position.
During the through operation, after the rotation drive of the film feeding mechanism (3) and the swing drive of the swing arm mechanism (4) are stopped, the rod (80a) of the air cylinder device (80) moves forward as shown in FIG. Then, the movable frame (31) is rotationally driven counterclockwise to change the posture of the film feeding mechanism (3) and the swing arm mechanism (4).

  As shown in FIG. 11, the posture changing mechanism (8) changes the posture of the film feeding mechanism (3) and the swing arm mechanism (4), and the second feeding roller (33) of the film feeding mechanism (3) is the first. In a state of being separated from the feed roller (32), the second feed roller (33) is separated from the linear path from the film delivery device to the labeling device, and the first swing arm (41) and the second swing arm (42). ) Is held in a horizontal posture along the straight path.

[Film Ejection Mechanism (7)]
As shown in FIGS. 5 and 7, the base frame (11) is provided with two guide shafts (74) and (74) extending vertically at the rear position of the accumulator box (2). As shown in FIG. 5, a slider (75) is slidably engaged with each guide shaft (74), and an elevating member (76) is connected to the slider (75). The first outlet roller (71) and the second outlet roller (72) are horizontally installed between the lifting members (76) and (76) on both sides as shown in FIG.

As shown in FIG. 5, shafts 73a and 73b are installed horizontally on the upper and lower ends of the rear vertical frame portion 11a of the base frame 11 and mounted on the upper shaft 73a. A pair of driving pulleys (77) and (77) are attached so as not to rotate relative to each other, and a pair of driven pulleys (78) and (78) are attached to the lower shaft (73b) so as not to rotate relative to each other. 77) and a timing belt (79) are stretched between each driven pulley (78). Each slider (75) is connected to each timing belt (79).
As shown in FIG. 12, an electric motor (70) is attached to the rear vertical frame portion (11a) of the base frame (11), and the output shaft of the electric motor (70) is located at the upper side shown in FIG. The shaft (73a) is rotationally driven in connection with the shaft (73a).

  The rotation of the shaft (73a) is transmitted from the driving pulley (77) to the driven pulley (78) via the timing belt (79), and the timing belt (79) moves around. Along with this, the slider (75) moves up and down together with the lifting member (76), and as the lifting member (76) moves up and down, the first outlet roller (71) and the second outlet roller (72) move up and down.

  Incidentally, when the first outlet roller (71) and the second outlet roller (72) are lifted to the rising end as shown in FIG. 5, the film outlet mechanism (7) has the first outlet roller (71 ) Is rotated 180 degrees counterclockwise, and a reversing mechanism (not shown) is connected to reverse the vertical positional relationship between the first outlet roller (71) and the second outlet roller (72).

During the accumulating operation, as indicated by the solid line in FIG. 5, the first outlet roller (71) and the second outlet roller (72) are held at the rear position of the laminated film film accumulated in the accumulator box (2). The belt-like film drawn from the outlet opened at the bottom of the accumulator box (2) is first wound clockwise around the first outlet roller (71) and then counterclockwise around the second outlet roller (72). After being wound in the direction, it is discharged toward the downstream labeling device.
During the through operation, as shown in FIG. 11, the first outlet roller (71) and the second outlet roller (72) rise to the rising end, and the first outlet roller (71) and the second outlet roller (72) are lowered downwardly across a straight path from the film delivery device to the labeling device. One exit roller (71) is disposed, and a second exit roller (72) is disposed above, and the belt-like film F passes between the exit rollers (71) and (72) and then travels toward the downstream labeling device. Will move.

[Operation]
In the accumulator (1), during the accumulating operation, the belt-like film F is swung between the first feeding roller (32) and the second feeding roller (33) of the film feeding mechanism (3). It is paid out toward the mechanism (4).
As a result, the belt-like film F travels from the entrance to the exit of the passage formed between the first swing arm (41) and the second swing arm (42), and is discharged downward from the exit. In this process, the wire portion on the belt-like film side of the wires (43) and (43) stretched on both swing arms (41) and (42) is slightly in the traveling direction of the belt-like film in the traveling direction. Since it is moving at a high speed, the belt-like film traveling in the path between the two swing arms (41) and (42) receives the driving force accompanying the slip friction from the wire (43) and is always stretched in the path. Will not clog in the passage.

  In addition, although the space | interval larger than the thickness of a strip | belt-shaped film is provided between the two wires (43) (43) which pinch | interpose a strip | belt-shaped film from both sides, a strip | belt-shaped film has either wire (43). The contact force is received from the wire (43).

The belt-like film released from the swing arm mechanism (4) is folded as shown in FIG. 13 (a) in accordance with the swing of both swing arms (41) and (42), and is stored in the accumulator box (2). Accumulated in.
The belt-like film accumulated in the accumulation box (2) is discharged to the downstream labeling device through the first outlet roller (71) and the second outlet roller (72) as shown in FIG. Here, since the first outlet roller (71) is arranged behind the laminated film film in the accumulator box (2), the belt film in the accumulator box (2) is drawn out rearward. become.
Therefore, the laminated state of the band-shaped film in the accumulator box (2) is not greatly collapsed, and therefore there is no possibility that the band-shaped film is twisted or bent during the process of drawing the band-shaped film.

When the exchange of the base material roll in the upstream film delivery device is completed during the accumulating operation, the accumulating device (1) is switched to the through operation.
Along with this, the electric motor (10) stops, and the rotation of the first feeding roller (32), the swing of both swing arms (41) and (42), and the circular movement of the wire (43) stop. Further, the second feeding roller (33) is separated from the first feeding roller (32).
Then, the air cylinder device (80) of the posture changing mechanism (8) operates to change the postures of the film feeding mechanism (3) and the swing arm mechanism (4) as shown in FIG. Further, the first outlet roller (71) and the second outlet roller (72) of the film discharge mechanism (7) rise to the rising end, and the upper and lower sides of the first outlet roller (71) and the second outlet roller (72) are raised and lowered. The positional relationship is reversed.

As a result, as shown in FIG. 11, the belt-like film F fed from the upstream film feeding device is merely in sliding contact with the first feeding roller (32) of the film feeding mechanism (3), and is almost in contact with other members. Without passing, it passes through the swing arm mechanism (4) and the film discharge mechanism (7) and moves to the downstream labeling device.
Accordingly, during the through operation, the belt-like film F moves from the film feeding device to the labeling device with almost no resistance, and the power loss in the process becomes almost zero.

[First improvement]
In the accumulator (1) according to the present invention, even if the moving speed of the strip film F discharged from the accumulator box (2) is increased from, for example, about 50 m / min to 120 m / min, the strip film F is smooth. In order to realize the discharge, as shown in FIG. 1, the bottom wall (20) of the accumulator box (2) is formed in an arcuate surface shape with the highest center part, and at the center part of the bottom wall (20) in the folding direction. An outlet (20a) was opened, and the belt-like film F was drawn downward from the outlet (20a).

At the outlet (20a) of the bottom wall (20) of the accumulator box (2), a pair of first outlet rollers (81) (81) are provided, and further, a second outlet roller (82) is provided at a lower position thereof. Deploy and form a path to draw the belt-like film accumulated in a folded state on the bottom wall (20) of the accumulator box (2) downward from the outlet (20a) at the center of the bottom wall (20) .
Further, behind the accumulator box (2), a third outlet roller (83) is provided at the same height as the second outlet roller (82), and the belt-like film F passed through the second outlet roller (82). Is moved in the horizontal direction and then supplied to a subsequent labeling device (not shown).

  According to the improved accumulator device (1), the belt-like film accumulated in the accumulator box (2) in a stacked state is sequentially discharged from the bottom layer to the outlet (20a at the center of the bottom surface of the accumulator box (2). ), The upper strip film is not dragged in the horizontal direction by the lowermost strip film. Accordingly, there is no disturbance in the laminated state of the strip film in the accumulation box (2), and smooth discharge of the strip film is realized. For example, it becomes possible to discharge a 40 μm-thick strip film at a speed of 120 m / min.

[Second improvement]
In the accumulator (1) according to the present invention, the thickness of the strip film F is reduced from, for example, 60 μm to 40 μm, and the moving speed of the strip film F supplied to the accumulator box (2) is, for example, about 50 m / min. 1 to 120 m / min, the left and right side walls (26) (26) of the accumulator box (2) can be folded in order in the accumulator box (2), as shown in FIG. A large number of air vent holes (27) are opened in each of the air vent holes (26) to let the air flow generated when the belt-like film is folded escape from the air vent holes (27) to the outside of the accumulator box (2) and each side wall (26 A large number of conductive wires (100) grounded along the inner surface of the belt-shaped film F are suspended in a warm manner, and the static electricity of the belt-like film F is removed by the conductive wires (100).

  As shown in FIG. 2, the left and right side walls (26), (26) constituting the accumulator box (2) each have a two-layer structure of an outer metal wall (24) and an inner anti-resistance resin wall (25). Have. As shown in FIG. 1, three horizontally long through holes (28), (28), (28) are opened at the same height at the top of each side wall (26), and the metal wall (24) has Two large windows (29) and (29) are opened at the same height position below the three through holes (28), (28) and (28). And in the resin wall (25), the said many air vent holes (27) are opened in the area | region exposed from the said two windows (29) and (29), disperse | distributing uniformly.

Further, as shown in FIG. 2, a strip-shaped conductive plate (101) extending along each through hole (28) is fixed to the upper portion of each metal wall (24), and each conductive plate (101) and the metal wall ( 24) are sandwiched between the upper end portions of a large number of conductive lines (100) arranged at equal intervals. These conductive wires (100) extend through the through hole (28) to the inside of the side wall (26) and hang downward in the accumulator box (2). Each conductive plate (101) is grounded via a ground wire (not shown).
The conductive plate (101) is made of, for example, an aluminum plate, and the conductive wire (100) is made of, for example, conductive fiber.

In the accumulator (1) with the above improvement, the air flowing toward both sides of the belt-like film when the belt-like film is folded passes through the air vent hole (27) as shown by the broken arrows in FIG. Then, you will escape outside the accumulation box (2). Accordingly, the belt-like film is quickly dropped onto the lower belt-like film while maintaining the horizontal orientation on the left and right sides, and is folded one after another.
Further, when the belt-like film is folded, the belt-like film comes into contact with the conductive wire (100), so that the static electricity charged in the belt-like film F is removed. Therefore, the belt-like film is not attracted to the surface of the side wall (26) by static electricity, and a smooth folding operation is realized.

  As described above, according to the accumulator according to the present invention, the outlet (20a) is opened at the center of the bottom wall (20) of the accumulator box (2), and the belt-like film is drawn downward from the outlet (20a). By adopting the configuration, the belt-like film can be discharged at a high speed of, for example, 120 m / min without destroying the laminated state of the belt-like film accumulated in the accumulation state in the accumulation box (2).

  In addition, an air vent structure in which a large number of air vent holes (27) are opened in the side wall (26) of the accumulator box (2), and a resin wall (25) is disposed inside the side wall (26) of the accumulator box (2). By adopting a static electricity removal structure in which a large number of conductive wires (100) are suspended in a warm manner along the resin wall (25), for example, a 40 μm-thick belt-like film can be folded one after another at a speed of 120 m / min. As a result, it is possible to shorten the time required for accumulating a certain amount of strip-like film in the accumulation box (2).

It is sectional drawing of the accumulator apparatus which concerns on this invention. It is sectional drawing which follows the SS line | wire of FIG. It is sectional drawing which shows the principal part of FIG. It is a perspective view which shows the whole accumulator apparatus developed previously. It is a side view of the accumulator. It is a longitudinal cross-sectional view of this accumulator. It is a top view of the accumulation box on a base frame. It is a perspective view which shows a film delivery mechanism and a posture change mechanism. It is a perspective view which shows a rocking | fluctuation arm mechanism. It is a side view which shows operation | movement of a rocking | swiveling arm mechanism. It is a side view which shows operation | movement of a posture change mechanism. It is a longitudinal cross-sectional view which shows a film discharge mechanism. It is explanatory drawing which shows the fundamental structure and operation | movement of this accumulator. It is a side view which shows the structure of the conventional accumulator. It is a block diagram explaining arrangement | positioning of an accumulator.

Explanation of symbols

(1) Accumulator
(11) Base frame
(10) Electric motor
(2) Accum box
(20) Bottom wall
(20a) Exit
(26) Side wall
(27) Air vent hole
(81) First exit roller
(82) Second exit roller
(100) Conductive wire
(3) Film feeding mechanism
(31) Movable frame
(32) First feed roller
(33) Second feed roller
(4) Swing arm mechanism
(41) First swing arm
(42) Second swing arm
(51) Swing block
(6) Crank mechanism
(7) Film discharge mechanism

Claims (4)

A belt-like film that is installed between the upstream device that feeds the belt-like film and the downstream device that receives the belt-like film fed from the upstream device and extends between the upstream device and the downstream device as needed. In the accumulator that accumulates inside the accumulator box,
At the upper position of the accumulator box, a film folding device is provided that folds the belt-shaped film fed from the upstream device into the accumulator box and folds the accumulator box on the bottom surface of the accumulator box. An accumulator is characterized in that an outlet is opened at the central portion thereof, and the strip-like film in the accumulator box is drawn downward from the outlet and supplied to the downstream device.   The accumulator according to claim 1, wherein a bottom surface of the accumulator box is formed in a circular arc shape having a highest central portion. The film folding device is
A film feed mechanism for feeding the belt-like film fed from the upstream device to the accumulator box side;
A swing arm mechanism having an entrance and an exit for the strip-shaped film fed out from the film feed-out mechanism and having a strip-shaped film passage extending from the entrance to the exit, and swinging the exit side on the accumulator box around the entrance side; The accumulator according to claim 1 or 2, comprising:   At the downstream position of the outlet opened on the bottom of the accumulator box, a film discharge for regulating the movement path of the strip film so that the strip film is drawn downward from the outlet and discharging the strip film toward the downstream device. The accumulator according to any one of claims 1 to 3, wherein a mechanism is provided.

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