KR20190038982A - lap machine - Google Patents

Abstract

The present invention provides a lap machine which is capable of detecting that a film of a film roll is exhausted. When the lap machine places film rolls (7) having a width of 50 cm in a different height, discharges the film (71) to overlap each other, and is stretched by passing between a first stretch roller (61) and a second stretch roller (62) constituting a stretch part (6) to wound around a roll bail (9), a detection sensor (72) which contacts the film (71) is provided between the first stretch roller (61) and the second stretch roller (62). The detection sensor (72) is provided on upper and lower parts of a non-overlapping film, therefore, by the same, it is possible to detect that the film (71) of one of film rolls (7) is exhausted.

Description

Lap machine {lap machine}

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a lapping machine for wrapping a film around a roll bale, and more particularly, to a lapping machine capable of detecting that a film roll is missing.

Generally, when wrapping a film on a roll veil, a lapping machine is used.

This lap machine is provided with a turntable which rotates in the vertical axis direction and the horizontal axis direction with the roll bale mounted thereon and a film holding section which feeds the film to the roll bale which rotates on the turn table, The film is wound on the roll bail while stretching the film in the feeding direction by changing the number of revolutions of the pair of stretch rollers passed through (see Patent Document 1).

However, there is a case where the film is lost during the winding of the film on the roll bale. Therefore, conventionally, a film break detection mechanism is provided.

As shown in Fig. 11, this film break detection mechanism is a mechanism in which a metal piece 103 is mounted on a rotary shaft of stretch rollers 101 and 102 constituting a stretch portion, The sensor 104 is mounted and the nonrotative state of the stretch rollers 101 and 102 based on the disappearance of the film 71 of the film roll 7 is detected so that the film 71 can be detected to be missing It is.

Patent Document 1: JP-A-2015-226515

However, when detecting that the film is missing in this manner, the following problems arise.

That is, for example, when film rolls each having a width of 50 cm are arranged at different heights, and each film is fed in an overlapped state, even if one of the two films is missing, . Therefore, the stretch roller continues to rotate, and it can not be detected that one of the films has disappeared.

Further, even when the film is wound using one film roll having a large width, if the film is partially torn, the stretch roller continues to rotate, so that the film can not be detected.

DISCLOSURE OF THE INVENTION The present invention has been made in view of the above problems, and it is an object of the present invention to be able to detect even if a film is lost or partially damaged.

That is, in order to solve the above-described problems, the present invention provides a film holding apparatus comprising: a bail support for placing a roll bale; a film holding unit for holding a film roll wound on a roll bale placed on the bail support; And a stretch portion stretching the film fed from the film holding portion in the feeding direction, and winding the film on the roll bale by rotating the bail support or the film holding portion, And a sensor for detecting the presence or absence of the sensor.

With this configuration, it is possible to detect the absence of the film of one of the film rolls, for example, when the film is fed out from the two film rolls. Further, even when the film is wound by using one film roll, it is also possible to detect that the film is torn at a portion where the detection sensor is present.

In this invention, the detection sensor is provided between the pair of stretch rollers constituting the stretch portion.

By providing such a position, the film is not shaken between the pair of stretch rollers, and it is possible to reliably detect the presence or absence of the film.

In addition, the film holding unit is configured to hold a plurality of film rolls so as to overlap each other, and the detection sensor is provided at a position where the film fed from the film holding unit does not overlap each other.

By providing such a position, it is possible to detect that one of the films is missing when the film is fed from the pair of film rollers.

According to the present invention, there is provided an image forming apparatus comprising: a bale support for placing a roll bale; a film holding portion for holding a film roll wound around a roll bale placed on the bale support; A wrapping machine having a stretchable portion for stretching and winding the film on the roll bale by rotating the bail support or the film holding portion is provided with a detection sensor for detecting the presence or absence of the film fed from the film holding portion , It is possible to detect that the film of one of the film rolls is missing when the film is fed out from the two film rolls. It is also possible to detect that the portion where the detection sensor is present is torn even when the film is wound using one film roll.

1 is a schematic view of a lapping machine showing an embodiment of the present invention.
2 is a view showing a state in which a film roll having a width of 75 cm is held in a film unit according to an embodiment.
Fig. 3 is a view showing a state in which a 50 cm wide film roll is maintained at a different height on the film unit in one embodiment. Fig.
4 is a view showing an upper frame of the film holding portion in one embodiment.
5 is a schematic view showing a rotation holding section and a lower frame of the film holding section in one embodiment.
Fig. 6 is a view of the film holding portion in the embodiment viewed from below. Fig.
7 is a view showing a principle of a stretch portion in an embodiment.
8 is a view showing a mounting position of the detection sensor in the embodiment.
Fig. 9 is a view showing the contact state of the detection sensor and the film in one embodiment. Fig.
10 is a state diagram when the bail support in the embodiment is tilted to release the roll bail.
11 is a view showing a detection sensor in the conventional example.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

1, the lapping machine 1 according to this embodiment includes a turntable 2 on which a roll bail 9 is placed and a roll bail 9 wound on the roll bail 9 placed on the turntable 2 A film holding portion 4 for holding the film 71 and a stretch portion 6 for stretching the film 71 from the film holding portion 4 so as to stretch the film 71. Characteristically, Between the pair of first stretch rollers 61 and the second stretch rollers 62 constituting the stretch section 6 is a detection section which directly detects presence or absence of the film 71 in contact with the film 71, A sensor 72 is provided. Hereinafter, the configuration of the lapping machine 1 in the present embodiment will be described in detail.

First, the turn table 2 for rotating the roll bail 9 in a mounted state is supported on the bail support 23, and as shown in Fig. 1, a pair of parallel And a belt 22 stretched between the rollers 21 and the rollers 21 in a tensioned manner. The roll bail 9 is rotated around the horizontal axis by rotating the roller 21 along its horizontal axis and a motor (not shown) provided below the turntable 2 is rotated So that the turntable 2 is rotated around the vertical axis.

On the side of the turntable 2, a film unit 3 is provided. The film unit 3 can be stretched and fed out in the feeding direction with respect to the roll bale 9 placed on the turntable 2, (Not shown).

The film unit 3 includes a film holding portion 4 for holding the plurality of film rolls 7 so as to be able to change their positions and a film 71 of the film roll 7 held by the film holding portion 4 And a stretch portion 6 for stretching the stretchable portion 6a.

)된 홈부(41)의 내부에 마련된 힌지(41a)를 매개로 하여 장착되어 있으며, 그 힌지(41a)를 중심으로 경동(傾動)시키도록 되어 있다. 그리고, 이와 같이 삽입간(5)을 경동시킴으로써, 상단으로부터 필름 롤(7)을 삽입시키고, 한편, 필름 롤(7)을 삽입한 삽입간(5)을 되돌리는 경우는, 도 4에 나타내는 바와 같이, 그 상단측을 회전 유지부(40)와 평행하게 마련된 플레이트 모양의 상부 프레임(45)의 홈부(46)에 넣고, 그 상태에서 훅(hook)(48)을 매개로 하여 걸리게 하도록 하고 있다. 이 훅(48)은, 스프링(48b)을 매개로 하여 항상 삽입간(5)을 걸리게 하는 힘을 부여하고 있으며, 그 걸림 상태를 해제하는 경우는, 반대 방향으로 힘을 부여함으로써 걸림 상태를 해제할 수 있도록 하고 있다. 2 and the like, the film holding portion 4 includes a plate-shaped rotation holding portion 40 rotatably mounted on the lower portion of the column 31, And a plurality of parallel interleaving rods 5 provided on the circumference of the inserting portion 5. The film rolls 7 are inserted into the inserting spaces 5 to be held. As shown in Figs. 5 and 6, the insertion gap 5 is formed so as to be inserted in the inner edge of the plate-shaped rotation holding portion 40

And is tilted around the hinge 41a. The hinge 41a is provided in the groove 41, In the case where the film roll 7 is inserted from the top by tilting the insertion gap 5 and the insertion gap 5 inserted with the film roll 7 is returned, Likewise, the upper end side thereof is inserted into the groove portion 46 of the plate-shaped upper frame 45 provided in parallel with the rotation holding portion 40, and hooked by the hook 48 in this state . The hook 48 always applies a force to hook the insertion gap 5 via the spring 48b. When the hook 48 is released, a force is applied in the opposite direction to release the hook state And the like.

When the insert roll 5 is tilted, the insert roll 5 is hardened at a position that is not ready, so that the film roll 7 comes into contact with the main body of the wrap machine 1, So that there is a possibility of breakage. Therefore, only when the film roll 7 is located at the outermost position of the lapping machine 1 (just before the paper surface in Fig. 1) And so on. When releasing the hook 48, a claw 48a of the hook 48 is attached to a circular plate 47a mounted on the center side of the post 31 as shown in Fig. The retracting skin 47 is retracted so that the hook 48 is rotated via the fulcrum only when the film roll 7 is located at the outermost side of the lapping machine 1 have. Thus, when the hook 48 rotates, the claw 48a enters the retracted skin 47, so that the rotation of the hook 48 is permitted. On the other hand, at the other positions, the claws 48a of the hooks 48 come into contact with the outer periphery of the disk, and therefore, the claws 48a can not be rotated. As a result, the hook 48 can be released only when the film roll 7 is located outside.

5 and 6, when the insertion gap 5 is hardened in the state in which the film roll 7 is located at the outermost position, the hook 48 is released, The stopper piece 49 provided on the lower side of the insertion hole 5 is also released to make the insertion space 5 hard. The stopper piece 49 is tilted to the lower side through a spring at the lower portion of the rotation holding portion 40 so that its tip end portion is brought into contact with the insertion side 5. As a result, the tip end of the stopper piece 49 comes into contact with the lower portion of the insertion space 5, and the hardness of the insertion space 5 is prevented. On the other hand, in the case where the insertion gap 5 is hardened, the insertion gap 5 is hardened by hardening the stopper piece 49 downward.

The rotation holding portion 40 for supporting the insertion gap 5 is adapted to hold the film roll 7 on a concentric circle centering on the pillars 31, So that the rotation state is fixed. 5 and 6, the pin 43 is inserted upward from the lower frame 42 provided at the lower portion of the rotation holding portion 40, The leading end portion of the rotation holding portion 40 is engaged with the concave portion 44 provided in the lower portion of the rotation holding portion 40 to thereby fix the rotation holding portion 40 in the rotational state. As a result, the position of the film roll 7 is fixed, and the film 71 can be stably fed to the stretch portion 6.

On the other hand, a plurality of holes 51 for holding film rolls 7 having different film widths, for example, 75 cm width, 50 cm width and the like are provided in these insertion spaces 5, So that the height of the shaft holding portion 53 can be changed to hold the film roll 7. 2, when the film roll 7 of 75 cm width is to be mounted, the film roll 7 is held by inserting the pin 52 into the lowermost hole portion 51, The upper end of the roll 7 is pressed by the pressing portion 54 to prevent lifting. On the other hand, when the film roll 7 having a width of 50 cm is to be mounted, as shown in Fig. 3, the pin 52 is inserted into the second hole 51 from the bottom to mount the film roll 7, Alternatively, the pins 52 are inserted into the hole 51 at the lowermost portion and the hole 51 at the second hole, so that the adjacent film rolls 7 are mounted at different heights. When the film rolls 7 are mounted at different heights as described above, the film 71 is led out from the two film rolls 7 in a state of overlapping with each other, so that the film 71 can be wound around the roll bail 9 widely . When either one of the film rolls 7 is missing, the film 71 can be fed out by using the film rolls 7 having different heights from each other by rotating the rotation holding portion 40. [

The stretch portion 6 is capable of stretching the film 71 fed out from the film roll 7 in the feeding direction by 150% to 180%, and as shown in the principle diagram of Fig. 7, By engaging the gears with each other, the number of revolutions of the respective stretch rollers 61 and 62 can be changed. The first stretch roller 61 provided on the film roll 7 side is rotated relatively more slowly than the second stretch roller 62 provided on the exit side (the roll bail 9 side) . As a result, the film 71 can be stretched and fed out to be wound on the roll bail 9. The first stretch roller 61 of the stretch unit 6 presses the outer periphery of the film roll 7 via the spring 63 so that the film roll 7 To prevent the film 71 from being fed out unnecessarily. As shown in Fig.

The film 71 thus delivered is wound on a roll bale 9 rotating on the turntable 2 and thereafter the bale support 23 is wound by the hydraulic cylinder 24 (Inclined) backward, and is cut off by the cutting and holding portion 8. The cutting and holding portion 8 is provided at the end of the bail support 23 and hardened by the bail support 23 so that the film 71 is held in a bundled state from below and can be cut by the cutter . Then, in a state where the film 71 is cut as described above, the roll bail 9 is discharged rearward. At this time, in the cut and hold portion 8, the end of the film 71 is held in order to wind the film 71 to the next roll bail 9.

In the present embodiment, under such a configuration, a detection sensor 72 for directly detecting the absence of the film 71 is provided.

As shown in Fig. 8, the detection sensor 72 detects presence or absence of the film 71 in the non-overlapped portion among the respective films 71 fed out from the film roll 7 provided with different vertical heights, A contact roller 73 rotating in contact with the film 71 and a sensor 74 detecting rotation of the metal inserted into the contact roller 73 are provided . When the detection sensor 72 is provided, the distance between the film roll 7 and the first stretch roller 61, between the first stretch roller 61 and the second stretch roller 62, and between the second stretch roller 62 Between the roll 7 and the first stretch roller 61. Since there is no clearance for mounting the detection sensor 72 between the film roll 7 and the first stretch roller 61, There is a possibility that the presence or absence of the film 71 can not be accurately detected due to the change of the diameter of the film roll 7 as indicated by the broken line. On the other hand, in the case of providing between the second stretch roller 62 and the roll bale, as shown by the broken line in Fig. 9, since the film 71 swings in the left and right direction by the rotation of the roll bail, It is difficult to always keep the film 71 in contact with the film 71. Thus, in this embodiment, the detection sensor 72 is provided between the first stretch roller 61 and the second stretch roller 62. [ In this way, the detection sensor 72 can be mounted in the gap between the first stretch roller 61 and the second stretch roller 62, and the film 71 is always in a deployed position, It is possible to certainly detect the presence of the film 71 by making contact with the film 71. Although the detection sensor 72 is configured to detect the rotation of the contact roller 73 contacting the film 71, an optical sensor, a proximity sensor, or the like may be used.

Next, a method of using the lapping machine 1 configured as described above will be described.

First, when the film 71 is wound on the roll bail 9, the roll bail 9 to be wound on the film 71 is placed on the turntable 2, A plurality of film rolls 7 are inserted and held.

When the film roll 7 is held, the rotation holding portion 40 is rotated so as to position the insertion gap 5 at the outermost position, and the pin 43 of the fixing portion is inserted in this state, do. In this state, the claw 48a of the hook 48 provided on the side of the upper frame 45 is retractable to the retracted skin 47, and the state of engagement of the insertion gap 5 by the hook 48 Can be released. In addition to this, the stopper piece 49 provided on the side of the lower frame 42 is lowered to lower the insertion side 5 to the side of the vehicle body. Then, the film roll 7 is inserted from the upper side into the insertion space 5. At this time, when inserting the film roll 7 having a width of 75 cm, the pin 52 is inserted into the hole 51 provided at the lowermost portion of the insert 5, and the film roll 7, the film roll 7 having a width of 50 cm is inserted, the pin 52 is inserted into the second hole portion 51 from the lowermost portion or the bottom portion of the insertion gap 5, And the film roll 7 is held by the roller 53. The interlabial space 5 is then erected in the state where the film roll 7 is held as described above and accommodated in the groove portion 46 of the upper frame 45 and hooked by the hook 48.

Next, after the film roll 7 is held in this way, the lower pin 43 of the rotation holding portion 40 is pulled out to rotate the rotation holding portion 40, The rotation holding portion 40 is fixed by inserting the lower pin 43 again in a state in which the rotating shaft 5 is located at the outermost position. In the same manner, the hook 48 and the stopper piece 49 are disengaged and the hole 52 of the insert 5 is selected to insert the pin 52 from the side, And the film roll 7 is held by the film roll 7. At this time, when the film roll 7 of 75 cm width is to be held, the pin 52 is inserted into the hole 51 provided at the lowermost part of the insertion gap 5 to insert the shaft center holding portion 3, when the film roll 7 is held by the rollers 7 and 53, and the film roll 7 having a width of 50 cm is held, as shown in Fig. 3, The film roll 7 is held by the shaft center holding portion 53 by sandwiching the film roll 52 therebetween.

Thereafter, similarly, the film roll 7 is held while rotating the rotation holding portion 40 in sequence. Then, the film roll 7 is held and the upper end portion of the film roll 7 is pressed by the pressing portion 54 to prevent lifting.

The first stretch roller 61 of the stretch unit 6 is pressed against the inner film roll 7 using the spring 63 while the film roll 7 is held in this state, The film 71 is fed to the cut and hold portion 8 via the first stretch roller 61 and the second stretch roller 62. [ Then, the end portion of the film 71 is held by the cutting and holding portion 8. At this time, the film 71 fed out from each film roll 7 comes into contact with the upper and lower contact rollers 73 provided between the first stretch roller 61 and the second stretch roller 62, As a result, it is possible to detect the presence or absence of the film 71 fed out from each film roll 7.

In this way, the roll bale 9 is rotated by the turntable 2 in a state where the film 71 or the roll bale 9 is set. The film 71 held on the cut and hold portion 8 of the turntable 2 is wound around the outer periphery of the roll bail 9 by the rotation of the turntable 2. [ At this time, since the roll bail 9 rotates on the horizontal axis and the vertical axis, it is possible to wind the film 71 on the entire roll bail 9 by the rotation.

10, the bail support 23 is inclined rearwardly, and the roll bail 9 is moved backward by a predetermined amount of the film 71. Then, as shown in Fig. 10, after the turn table 2 is stopped at a predetermined position, . At this time, when the bail support 23 is inclined, the end of the film 71 is held by the cutter holding portion 8 provided on the turntable 2, and thereafter the film 71 Is cut. Thus, the roll bail 9 can be released.

When the film 71 is removed during the winding of the film 71, the film 71 is peeled off from the film roll 7, And the contact roller 74 of the upper and lower one or both of the detection sensors 72 does not rotate. As a result, it is possible to detect that the corresponding film roll 7 has disappeared, and the replacement of the film roll 7 can be prompted by an alarm sound or the like.

When the film roll 7 is exchanged, the lower pin 43 of the rotation holding part 40 is pulled out to rotate the rotation holding part 40 in either direction, and the new film roll 7 is moved to the first stretch To the position closest to the roller (61). Then, the lower pin 43 is inserted again to fix the rotation state. The film 71 is fed from the film roll 7 to allow the film 71 to pass through the stretch section 6 and the end of the film 71 is held by the cut and hold section 8. At this time, when the film roll 7 having a width of 50 cm is used at a different height, the remaining film roll 7 is used as it is, and the film 71 from the film roll 7 adjacent thereto is used And the stretch portion 6 is fed so as to be overlapped. Then, similarly, the end portions of the films 71 are held on the cutting and holding portion 8.

The roll 71 is wound around the roll bail 9 and the roll bail 9 is discharged by tilting the bail support 23.

As described above, according to the embodiment, the bail support 23 for placing the roll bail 9 and the film roll 7 wound with the film 71 wound on the roll bail 9 mounted on the bail support 23 And a stretch portion 6 for stretching the film 71 fed out from the film holding portion 4 in the feeding direction, and the bail support 23 is rotated The wrapping machine 1 in which the film 71 is wrapped around the roll bale 9 is provided with a detection sensor 72 for detecting the presence or absence of the film 71 fed out from the film holding portion 4 It is possible to detect that the film 71 of one of the film rolls 7 is missing when the film 71 is fed out from the two film rolls 7. In addition, even when the film 71 is wound by using one film roll 7, it is possible to detect tearing of the portion where the detection sensor 72 is present.

Since the detection sensor 72 is provided between the pair of the first stretch roller 61 and the second stretch roller 62 constituting the stretch unit 6, the film 71 is not shaken, The presence or absence of the film 71 can be surely detected.

The film holding unit 4 is configured to hold a plurality of film rolls 7 so as to overlap each other and the detection sensor 72 is configured to hold the film 71 fed from the film roll 7, It is possible to detect that one of the films 71 is missing when the film 71 is fed out from the pair of film rolls 7. In this case,

The present invention is not limited to the above-described embodiment, but can be implemented in various forms.

For example, in the above embodiment, the film 71 is wound around the bail support 23 by rotating the film holding portion 4 around the roll bail 9, (9).

Although the detection sensor 72 is provided between the first stretch roller 61 and the second stretch roller 62 in the above embodiment, the presence of the film 71 wound on the film roll 7 It is okay to detect presence or absence. In this case, for example, it may be possible to determine the "no film" by detecting the difference in reflectance based on the color (color) difference between the film 71 and the core by the optical sensor. Alternatively, the presence or absence of the film 71 between the second stretch roller 62 and the roll bale may be detected using an optical sensor or the like.

1 - Lapping machine 2 - Turn table
21 - Rollers 22 - Belts
23 - Bale support 24 - Hydraulic cylinder
3 - Film unit 31 - Column
4 - Film holding section 40 -
41 - Groove 41a - Hinge
42 - Lower frame 43 - Pin
44 - recess 45 - upper frame
46 - Home 47 - Fur skin
48 - Hook 48a - Claw
48b - Spring 49 - Stopper piece
5 - between inserts 51 -
52 - pin 53 - shaft center holding portion
54 - pressing portion 6 - stretch portion
61 - first stretch roller 62 - second stretch roller
63 - Spring 7 - Film Roll
71 - Film 72 - Index sensor
73 - contact roller 74 - sensor
8 - Cutting and holding section 9 - Roll bail

Claims (3)

A bail support for placing a roll bale,
A film holding unit for holding a film roll wound around a roll bale placed on the bail support,
And a stretch portion stretching the film fed from the film holding portion in the feeding direction, and winding the film on the roll bale by rotating the bail support or the film holding portion,
And a detection sensor for detecting the presence or absence of a film fed from the film holding unit. The method according to claim 1,
Wherein the detection sensor is provided between a pair of stretch rollers constituting a stretch portion. The method according to claim 1,
Wherein the film holding portion holds a plurality of film rolls so as to overlap,
Wherein the detection sensor is provided at a position where the films fed from the film holding portion do not overlap each other.

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