JPH09315635A - Joining device for flexible band-like material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a earrying device for smoothly and surely carrying the end of a new roll, to a joining position with the tip of a web of a former roll. SOLUTION: A carrying device is constituted of the peripherally turning device of chains 66 and a nipping member 68 connected to the chains 66. The chains 66 are installed at an interval wider than the width of a web 44, to be peripherally turned and moved within a range of from the lower position of a new roll to the joining position of a joining unit. The nipping member 68 is constituted of two long size plates 72 and 74, and they are formed wider than the width of the web 44, to nip the whole width of the tip part 44 A of the web 44 over a whole region. The plate 72 is opening/closing freely connected to the plate 74, and is locked to the plate 72 when closed. Consequently, the whole region of the tip part whole width of the web 44 can be nipped by the plates 72 and 74, to be carried.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for joining flexible strips, and more particularly to an old roll and a new one of flexible strips (hereinafter referred to as "web") made of plastic, paper, metal foil or the like. The present invention relates to a joining device for joining flexible web-shaped members, which joins end portions of webs of a roll and continuously supplies a rewound web.

[0002]

2. Description of the Related Art Conventionally, a web joining device is composed of a web turret device, a web joining unit, and a web conveying device. The web turret device rearranges the positions of the old roll and the new roll, and sequentially supplies the web to the joining unit, and the joining unit of the web is for rewinding the old roll. The end portion of the web and the front end portion of the web of the new roll where the rewinding is started are joined while continuously feeding the web.

By the way, the web transfer device is provided between the turret device and the joining unit. This web transporting device transports the web leading end of a new roll, which is started to be rewound, to the joining position of the joining unit before joining. In the conventional web transporting device, an endless chain is provided between the turret device and the joining unit so as to be capable of revolving, and a small clip connected to the chain partially holds the web leading end of the new roll. After that, the chain is moved around and the leading end of the web is conveyed to the joining position (Japanese Patent Publication No. 48-38461).

[0004]

However, in the conventional web transporting apparatus, since the front end portion of the web is partially clamped by the clip, the clamping force at the front end portion of the web is weak, and therefore the web is conveyed during transport. There are drawbacks such that the tip end is disengaged from the clip, and the web is conveyed in a state of being displaced from the regular conveyance position.

When the leading edge of the web comes off the clip, it is necessary to stop the transporting device and squeeze the leading edge of the web again with the clip. Further, when the web is misaligned and transported, the web is moved at the joining position of the joining unit. However, there is a drawback that the alignment work is required. The present invention has been made in view of such circumstances, and smoothly and reliably conveys the leading end of the flexible strip of the new roll to the joining position with the end of the flexible strip of the old roll. It is an object of the present invention to provide a flexible band-shaped material joining device that can be used.

[0006]

In order to achieve the above-mentioned object, the present invention provides a new roll in which the flexible strip is unwound and a new roll in which the flexible strip is unwound. Turret means for axially supporting the roll, joining means for joining the end portion of the flexible strip of the old roll and the tip of the flexible strip of the new roll, and from the position of the turret means In a joining device for a flexible strip-shaped material, which comprises a transporting means for transporting a leading end portion of the flexible strip-shaped material of the new roll to a joining position by the joining means, the transporting means is configured to bend the new roll. It is characterized by comprising a sandwiching member for sandwiching the entire width of the distal end portion of the elastic band member over the entire region, and a moving means for moving the sandwiching member from the position of the turret means to the joining position by the joining means.

According to the present invention, the entire width of the front end portion of the flexible strip of the new roll is clamped by the clamping member over the entire area,
Then, the holding member is moved by the moving means,
The tip of the flexible strip is positioned at the joining position by the joining means. As described above, according to the present invention, since the entire region of the entire width of the tip end portion of the flexible strip-shaped member is sandwiched by the sandwiching member and conveyed, the sandwiching force of the flexible strip-shaped member becomes strong. Therefore, in the present invention, since the flexible strip-shaped material can be conveyed without being disengaged from the sandwiching member and the flexible strip-shaped material is not displaced from the conveying position, the new roll of The tip of the flexible strip can be smoothly and reliably conveyed to the joining position.

According to a second aspect of the present invention, the holding member is constituted by the first holding member and the pair of second holding members. When sandwiching a flexible strip with this sandwiching member,
First, the pair of second sandwiching members are opened to the first sandwiching member. Next, after arranging the first sandwiching member on one side surface of the flexible strip, the pair of second sandwiching members are closed to sandwich the flexible strip, and the flexible strip is locked by the locking member. . In this case, the pair of second sandwiching members is provided at the end of the first sandwiching member so as to be openable and closable, and is formed shorter than the first sandwiching member, so that the space for opening and closing can be reduced, Moreover, the labor can be saved.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of a joining device for flexible strips according to the present invention will be described in detail below with reference to the accompanying drawings. FIG. 1 is an overall view of a web butt joining apparatus to which a flexible strip joining apparatus according to an embodiment of the present invention is applied. As shown in the figure, the joining device 10 includes a turret device 12 and a web joining unit 1.
4 and a web transport device 16.

The turret device 12 has a turret arm 18, which is
The support column 20 is rotatably provided about a shaft 22 as a fulcrum. At one end of the turret arm 18, an old roll 24 for ending the rewinding of the web is rotatably supported on a shaft 26, and at the other end for a new roll 28 for starting the rewinding of the web is at the shaft 30. It is rotatably supported.
The web 32 is rewound from the old roll 24. The web 32 is rolled by guide rollers 34 and 36 and guided to the web joining unit 14.

As shown in FIG. 2, the web joining unit 14 comprises a cutting drum 38, a cutting and joining drum 40, and a joining drum 42, each of which is shown in FIG.
3 These drums 38, 40, 42
Are synchronously rotated by the power from a drive motor (not shown). The web 32 is inserted between the cutting drum 38, the cutting and joining drum 40, and the joining drum 42, and is wound up by a winding device (not shown).

The tip of the web 44 from the new roll 28 is
After being conveyed from the position of the new roll 28 to the position of the web joining unit 14 by the web conveying device 16 described later, it is adsorbed by the cutting drum 38 as shown in FIG. . In FIG.
A cutter 46 is attached to the cutting drum 38. This cutter 46 is, as shown in FIG.
This is for cutting the webs 32 and 44 in an overlapping manner at the cutting section 48 provided at 0. Further, ventilation holes 50, 50 ... Are formed in the flat portion of the surface of the cutting drum 38, and these ventilation holes 50, 50 ... Are connected to a ventilation hole 54 formed in the rotary hollow shaft 52. An intake device and an air supply device (not shown) are connected to the rotary hollow shaft 52. When the intake device is driven, the vicinity of the tip of the web 44 is adsorbed and held in the ventilation holes 50, 50 ... As shown in FIG. 2, and when the air supply device is driven, the web 44 shown in FIG. The cutting waste 45 is separated from the cutting drum 38.

An intake hole 56 is formed in the joining drum 42. The intake hole 56 is communicated with a vent hole 60 formed in the rotary hollow shaft 58, and an intake device (not shown) is connected to the rotary hollow shaft 58. When the intake device is driven, the joining tape 62 is adsorbed and held in the intake hole 56. The joining tape 62 is supplied from the tape supply device 64 shown in FIG.

The splicing unit 14 of the web is controlled so as to drive when the end portion 33 (see FIG. 3) of the web 32 from the old roll 24 approaches the splicing unit 14.
That is, as shown in FIG. 3, each drum 38, 40, 42
Is driven in the direction shown by the arrow in the figure, and first, the cutting drum 3
The cutter 46 of No. 8 and the cutting portion 48 of the cutting and joining drum 40 and the webs 32 and 44 are stacked and cut. Then, as shown in FIG. 4, the vicinity of the rear end portion of the web 32 and the front end portion of the web 44 are adhered with a joining tape 62, and the joining tape 62 is sandwiched between the cutting joining drum 40 and the joining drum 42 and pressure-bonded. . Thereby, the end of the web 32 and the tip of the web 44 are butt-joined with the joining tape 62 as shown in FIG. Therefore, the webs 32 and 44 can be continuously rewound without stopping the feeding of the web. Note that reference numeral 32A is cutting waste on the web 32 side.

By the way, the above-mentioned web transfer device 16
As shown in FIG. 1, is an endless chain 6 that is a moving means.
6, 66 (a chain on one side is not shown), and a holding member 68 connected to the chains 66, 66.
It is composed of The chains 66, 66 are installed at intervals wider than the width of the web 44, and are arranged in a range from a position below the new roll 28 to a bonding position of the bonding unit 14 via a plurality of sprockets 70, 70 ... The orbit is moved in the direction indicated by. Reference numeral 71 is a sprocket for driving the chain 66, and this sprocket 71 is a machine frame 4
It is attached to 3.

As shown in FIG. 6, the holding member 68 has two
It is composed of a long plate 72, 74 of a book. These plates 72, 74 are both formed to be wider than the width of the web 44, and are formed so that the entire width of the front end portion 44A of the web 44 can be clamped over the entire area. One end of the plate 72 is openably and closably connected to the plate 74 via a hinge 76, and a claw portion 78 is fixed to the other end. When the plate 72 is closed, the claw 78 is locked by the hook 80 fixed to the plate 72 side. As a result, the plates 72 and 74 are locked in the closed state. Further, a plurality of needles 82, 82 ... Staggeredly project from the inner surface of the plate 72, and the needles 82, 82 ... Are inserted into the inner surface of the plate 74 corresponding to these needles 82, 82. Holes 84, 84 are formed. When the web 44 is sandwiched between the plates 72 and 74, it is perforated by a needle 82 as shown in FIG. 7 to prevent slipping on the plates 72 and 74. Incidentally, FIG.
In the figure, reference numeral 86 designates the plate 74, the chain 66,
It is a connecting jig for connecting to 66.

The web transfer device 1 having the above-described structure
The operation of No. 6 will be described. First, the chains 66, 66 of the transfer device 16 are moved circularly to move the plates 72, 74.
Is positioned below the new roll 28 as shown in FIG. Next, the front end portion 44A of the web 44 of the new roll 28 is rewound from the new roll 28 by a predetermined amount. Next, as shown in FIG. 6, the plate 72 is opened, and the tip portion 44A of the web 44 is inserted between the plate 72 and the plate 74.
Then, the plate 72 is closed and the claw portion 78 is locked to the hook 82, and the plate 4 and the plate 74 make the web 4
The entire width of 4 is clamped over the entire area. This allows the web 4
Preparation for transportation of No. 4 is completed.

Next, the chains 66, 66 are moved circularly to move the plates 72 and 74. As a result, the web 44 is rewound from the new roll 28,
Then, the front end portion 44A of the web 44 is connected to the joining unit 14
The movement is stopped at the joining position, that is, the position shown in FIG. Then, the vicinity of the tip of the web 44 is adsorbed to the cutting drum 38. As a result, the web 44 stands by in the state of preparation for joining.

As described above, in the present embodiment, the web 4
Since the entire width of the front end portion of No. 4 is clamped and conveyed by the plates 72 and 74, the clamping force of the web 44 is increased. Further, the web 44 is fixed between the plates 72 and 74 by the needle 82 without slipping. Therefore, in the present embodiment, the web 44 is formed by the plates 72, 7
4, the web 44 can be transported without being disengaged from the transport position, and the web 44 can be smoothly and reliably transported to the bonding position.

FIG. 8 is a sectional view showing a second embodiment of the holding member. The plate 72 of the holding member shown in FIG.
74 does not have the needle 82 and the hole portion 84 as shown in FIG. 6, and is provided with a non-slip rubber sheet 88 on the inner surface of the plate 72. This allows the web 44
Are held by the rubber sheet 88 without slipping. The rubber sheet 88 may also be provided on the plate 74 side.

FIG. 9 is a front view showing a third embodiment of the holding member. The plate 72 of the holding member shown in FIG.
The plate 74 is formed by curving the plate 72 toward the plate 74. As a result, when the web 44 is sandwiched between the plates 72 and 74, the plate 72 is elastically deformed linearly, so that the web 44 is fixed without slipping due to the restoring force of the plate 72 (reaction force from the plate). . The plate 74 is not limited to the plate 74.
Also, it may be curved.

FIG. 10 is a front view showing a fourth embodiment of the holding member, and FIG. 11 is a sectional view taken along the line 11-11 in FIG. The sandwiching member 90 of this embodiment is shown in FIG.
As shown in FIG. 0, the central portion 44B of the tip portion 44A can be effectively used for the web 44 which is cut out in a semi-circular shape. As shown in FIGS. 10 and 11, the holding member 90 is
It is composed of a round bar 92, a pair of plates 94, 94 having inner surfaces formed in a semicircular shape, and fixing rings 96, 96. The round bar 92 is formed to be longer than the entire width of the front end portion of the web 44. Also, a pair of plates 94, 9
4 is openably and closably connected to the end of the round bar 90 via hinges 98, 98, and holds the web 44 with the round bar 90 when closed as shown in FIG. In this case, the pair of plates 9
Since 4 and 94 are formed shorter than the round bar 92,
The space for opening and closing can be reduced, and the labor can be saved.

[0023]

As described above, according to the apparatus for joining flexible strips of the present invention, the entire width of the tip of the flexible strip of the new roll is clamped by the clamping member over the entire area. Since it is conveyed to the joining position, the clamping force of the flexible belt-shaped member becomes strong. Therefore, in the present invention, since the flexible strip-shaped material can be conveyed without being disengaged from the sandwiching member and the flexible strip-shaped material is not displaced from the conveying position, the new roll of The tip of the flexible strip can be smoothly and reliably conveyed to the joining position.

[Brief description of drawings]

FIG. 1 is an overall front view of a flexible belt-shaped material joining device according to an embodiment of the present invention.

FIG. 2 is a structural diagram of a web joining unit.

FIG. 3 is an operation explanatory view of the joining unit.

FIG. 4 is an operation explanatory view of the joining unit.

FIG. 5 is an operation explanatory view of the joining unit.

FIG. 6 is a perspective view showing a first embodiment of a holding member for a web.

7 is a cross-sectional view of the holding member of the web shown in FIG.

FIG. 8 is a sectional view showing a second embodiment of a holding member for a web.

FIG. 9 is an explanatory view showing a third embodiment of a holding member for a web.

FIG. 10 is an explanatory view showing a fourth embodiment of a holding member for a web.

11 is a sectional view taken along line 11-11 in FIG.

[Explanation of symbols]

10 ... Web joining device 12 ... Turret device 14 ... Web joining unit 16 ... Web transport device 24 ... Old roll 28 ... New roll 32, 44 ... Web 66 ... Chain 68 ... Clamping member 72, 74 ... Plate

Claims (2)

[Claims] 1. A turret means for pivotally supporting an old roll on which the flexible strip is unwound and a new roll on which the flexible strip is unwound, and a flexure of the old roll. Joining means for joining the end of the flexible strip and the tip of the flexible strip of the new roll, and the flexible strip of the new roll from the position of the turret means to the joining position by the joining means. In a joining device for a flexible strip-shaped material provided with a transporting means for transporting a leading end portion, the transporting means includes a sandwiching member for sandwiching the entire width of the distal end portion of the flexible strip-shaped material of the new roll over the entire area. And a moving means for moving the sandwiching member from the position of the turret means to the bonding position by the bonding means. 2. The holding member of the conveying means can be opened and closed by a first holding member formed to be longer than the entire width of the front end portion of the flexible strip and an end portion of the first holding member. And a pair of second sandwiching members that sandwich the flexible strip between the first sandwiching member and the first sandwiching member when closed, and the pair of sandwiching members are engaged with the first sandwiching member when closed. The joining device for a flexible strip according to claim 1, wherein the joining device is locked by a stop member.