JPH09323848A - Device for jointing flexible band-like materials - Google Patents

Abstract

PROBLEM TO BE SOLVED: To join the end parts of a web cut at a predetermined inclination. SOLUTION: A supplying part proper 72 and a moving mechanism 74 constitute a joining tape supplying device 64. The supplying part proper 72 comprises a reel 80 on which a joining tape 62 is wound and the joining tape 62 is rewound from the reel 80 to be supplied to a joining drum 42 from a peel plate 86. The moving mechanism 74 consists of a rail 120 and a screw feed unit 122. The inclination θ deg. of the rail 120 is set to be equal to the inclination at the cut parts of the end parts of the web and its direction is also set to be same as the direction of the cut parts. When the supplying part proper 72 is moved along the rail 120, the joining tape 62 is supplied while forming an inclination θ deg.with the joining drum 42. Thus, the end parts of a web cut at a predetermined inclination are joined very well by the joining tape 62.

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 A conventional web joining device is disclosed in Japanese Patent Publication No. 48-38461. This web joining device is composed of a web turret device, a web cutting and joining unit, and the like. The turret device has a turret arm, and rearranges the positions of an old roll and a new roll that are pivotally supported at both ends of the turret arm, and sequentially supplies the web to the cutting and joining unit. The cutting and joining unit has a cutting drum and a joining drum. The cutting drum cuts the web end portion of the old roll being rewound and the web tip end portion of the new roll where rewinding is started while continuously feeding the web, and the joining drum continuously feeds the web. Meanwhile, the ends of the web are joined to each other with a joining tape.

The joining tape must be supplied to the joining drum in advance. In the past, the operation of supplying the joining tape was carried out manually, but as such a joining tape supplying device, there are those described in Japanese Patent Publication No. Sho 63-3819 and Japanese Patent Laid-Open No. 61-90954. .
These joining tape feeding devices feed the joining tape in a direction orthogonal to the longitudinal direction of the web. The feeding unit main body that feeds the joining tape and a moving mechanism that moves the feeding unit main body in the above direction. have.

[0004]

By the way, as shown in FIG. 12, when the end 1A of the old roll web 1 and the tip 2A of the new roll web 2 are cut by the cutter 3 while continuously feeding the webs 1 and 2, The end portions 1A, 2A are cut at a predetermined inclination angle θ ° with respect to the longitudinal direction of the webs 1, 2. When such a cut portion is joined by the above-mentioned joining tape feeding device, this feeding device feeds the joining tape in a direction orthogonal to the longitudinal direction of the web. Therefore, as shown in FIG. There is a drawback that wrinkles occur and the webs cannot be joined well.

The present invention has been made in view of the above circumstances, and the joining of the flexible strips capable of favorably joining the ends of the flexible strips cut at a predetermined inclination angle. The purpose is to provide a device.

[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. A turret means for axially supporting the roll, a distal end portion of the flexible strip material of the old roll, and a tip portion of the flexible strip material of the new roll are provided in a predetermined direction in the width direction of the flexible strip material. Cutting means for cutting at an inclination angle, joining means for joining ends of the flexible strips cut by the cutting means with joining tape, and joining tape supply means for feeding the joining tape to the joining means In the joining device for a flexible strip-shaped material, the joining tape supply means supplies the joining tape to the joining means at an inclination angle corresponding to a cutting line of the flexible strip-shaped material. The joining means joins with a joining tape along the cutting line, To have.

According to the present invention, the joining tape supplying means is
The joining tape is supplied to the joining means at an inclination angle corresponding to the cutting line of the flexible strip cut by the cutting means. Thereby, the joining tape is attached along the cutting line between the ends of the flexible strip. Therefore, according to the present invention, the ends of the flexible strips cut at a predetermined inclination angle can be joined together without causing wrinkles on the joining tape.

[0008]

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 comprises a turret device 12, a web cutting and joining unit 14, a web conveying device 16, and a joining tape feeding device 64.

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 on which web rewinding is completed is rotatably supported via a shaft 26, and at the other end, a new roll 28 on which web rewinding is started has a shaft. It is rotatably supported via 30. The web 32 is rewound from the old roll 24. The web 32 includes guide rollers 34,
It is rolled on 36 and guided to the cutting and joining unit 14 of the web.

The cutting and joining unit 14 of the web is shown in FIG.
As shown in FIG. 5, the cutting drum 38, the cutting and joining drum 40,
And a joining drum 42, each of which is installed in a machine frame 43 shown in FIG. These drums 38, 40,
Reference numeral 42 is rotated synchronously by 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 cutting and joining unit 14 of the web by the web conveying device 16, the web is adsorbed by the cutting drum 38 as shown in FIG. In FIG. 2, a cutter 46 is attached to the cutting drum 38. As shown in FIG. 3, the cutter 46 is for cutting the webs 32 and 44 in an overlapping manner at a cutting portion 48 provided in the cutting and joining drum 40. And is attached to the cutting drum 38 at a predetermined inclination angle θ °. Further, ventilation holes 50, 50 ... Are formed in the flat portion of the surface of the cutting drum 38.
0, 50 ... Are vent holes 54 formed in the rotary hollow shaft 52.
Is communicated to. 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. Cutting waste 4
5 is removed 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 joining tape feeder 64 shown in FIG. This joining tape feeding device 64
Will be described later.

This web cutting and joining unit 14 comprises a distal end 33 of the web 32 from the old roll 24 (see FIG. 3).
Is controlled so as to drive when it approaches the cutting and joining unit 14. That is, as shown in FIG.
The cutters 0 and 42 are driven in the directions indicated by arrows in the drawing, and first, the cutter 46 of the cutting drum 38, the cutting portion 48 of the cutting and joining drum 40, and the webs 32 and 44 are overlapped and cut. And
As shown in FIG. 4, the vicinity of the rear end of the web 32 and the web 44
The joining tape 60 is adhered to the leading end of the joining tape 62, and the joining tape 60 is sandwiched between the cutting and joining drum 40 and the joining drum 42 and pressed. 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. The reference numeral 32A indicates the web 32.
It is the cutting waste on the side.

As shown in FIG. 1, the web transporting device 16 is connected to the orbiting device of an endless chain 66, 66 (one side chain is not shown) which is a moving means, and the chain 66, 66. And a holding member 68. The chains 66, 66 are installed at intervals larger than the width of the web 44, and a plurality of sprockets 70,
70 is rotated in the range from the position below the new roll 28 to the joining position of the cutting and joining unit 14 in the direction indicated by the arrow in the drawing. Reference numeral 71 is a sprocket for driving the chain 66, and the sprocket 71 is attached to the machine frame 43. Although not shown, the holding member 68 is composed of two elongated plates. Both of these plates are formed wider than the width of the web 44, and are formed so that the entire width of the front end portion of the web 44 can be clamped over the entire area.

By the way, as shown in FIG. 6, the splicing tape supply device 64 moves the splicing tape 62 to the splicing drum 42 by moving the splicing tape main body 72 in the longitudinal direction of the splicing drum 42. And the mechanism 74. The supply section main body 72 is fixed on a support base 76 in a slanting upper right direction, and the support base 76 is supported on the moving mechanism 74.

FIG. 7 shows a top view of the supply section main body 72. As shown in the figure, the supply unit main body 72 includes a reel 80, a feed roller 82, a cutter 84, a peel plate 86, a take-up roller 88, and a take-up reel 90 on a base plate 78.
Is provided and configured. The bonding tape 62 is
A release paper (separator) 92 is overlaid on the adhesive surface and wound around the reel 80.

The joining tape 62 and the separator 92
Is previously guided from the reel 80 to the take-up reel 90 via the pass rollers 94 and 96, the feed roller 82, the cutter 84, the pass roller 98, the peel plate 86, the pass roller 100, the take-up roller 88, and the pass roller 102, and the leading end. Is fixed. A brake mechanism (not shown) is connected to the reel 80, and a take-up power generation mechanism (not shown) is also connected to the take-up reel 90. The spindle 106 of the servo motor 104 shown in FIG. 6 is connected to the feed roller 82, and the take-up roller 88 is connected to a belt or a second servo motor for transmitting the rotation of the feed roller 82. Therefore, the servo motor 10
By rotating 4 in the winding direction (the direction shown by the arrow in FIG. 7), the joining tape 62 and the separator 92 can be conveyed while applying appropriate tension to each part.

Now, a preparatory work procedure after setting a new tape coil on the reel 80 will be described. Bonding tape 62 and separator 9 wound on a new tape coil
After fixing the tip of 2 to the take-up reel 90, the cutter 8
At 4, the joining tape 62 alone is cut. The feed roller 82, the take-up roller 88, and the take-up reel 90 are operated until the leading end of the cut joining tape 62 reaches the peel plate 86. This completes the preparatory work.

In FIG. 7, a plurality of sensors are provided on the base plate 78. The sensor 108 is a light emitting sensor, and the sensor 110 is a light receiving sensor.
The remaining amount of the bonding tape 62 wound around 0 is detected.
The sensor 112 is a sensor that detects a peel defect. The sensor 116 is a sensor that detects wrinkles of the joining tape 62 supplied to the joining drum 42, and 118 is a sensor that detects the position of the joining tape 62.

On the other hand, in FIG. 6, the moving mechanism 74 is
A pair of rails 120, 120 and a screw feed device 122
Consists of As shown in FIG. 8, the pair of rails 120, 120 is θ ° with respect to the longitudinal direction of the joining drum 42.
The supply unit main body 72 is movably supported on the rails 120, 120 that are installed at an inclination. The inclination angle θ ° of the rail 120 is determined by the cutter 46 (see FIG. 3).
The angle is set to be equal to the angle of inclination of the cut portions between the web end portions cut in step 1, and the direction thereof is also set to the same direction as the direction of the cut portions. Therefore, when the supply part main body 72 is moved in the direction of the arrow in FIG. 8 along the rails 120, 120, the joining tape 62 forms an angle θ with the joining drum 42 which is the same as the inclination angle of the cut portion between the web ends. Supplied in °.

The screw feeding device 122 has a screw rod 124 rotated by a servomotor 123.
The threaded rod 124 has a pulley 12 connected to its end.
6 is the belt 1 on the pulley 128 on the servo motor 123 side.
A driving force can be transmitted via 30. Also,
The screw rod 124 is arranged in parallel with the rail 120 as shown in FIG. 8, and the nut portion 132 provided at the lower portion of the support base 76 shown in FIG. 7 is screwed. Therefore, when the servomotor 123 is driven, the screw rod 124 is rotated, so that the supply unit main body 72 moves the rails 120 and 12 together.
It is reciprocated along 0.

Next, the operation of the joining tape feeding device 64 configured as described above will be described. First, in FIG. 8, the servo motor 123 is reversely driven to move the supply section main body 72 to the left in the drawing, and the peel plate 86 of the supply section main body 72 is positioned at the supply start position indicated by A in the drawing. Next, the servo motor 104 (see FIG. 6) of the supply unit main body 72 is driven to stop the servo motor 104 when the tip of the joining tape 62 cut by the cutter 84 reaches the position of the peel plate 86. Thus, the preparation for supplying the joining tape 62 is completed.

Next, the servo motor 123 is driven to rotate in the forward direction to move the supply section main body 72 to the right in the figure, and at the same time, the servo motor 104 of the supply section main body 72 (see FIG. 6).
Is driven to supply the joining tape 62 to the joining drum 42 along the movement trajectory of the supply unit main body 72. As a result, the joining tape 62 begins to be supplied to the joining drum 42 at an inclination angle θ °, as shown in FIG. 8. Then, the cutter 84 is driven so that the end portion of the joining tape 62 is located at the supply end position indicated by B in the figure, and the joining tape 62 is moved.
Only disconnected. As described above, the joining tape 62 is supplied to the joining drum 42, and the preparation for joining the web is completed.

After that, the servo motor 123 is reversely driven to move the supply section main body 72 to the supply start position shown by A in the figure, and the sensor 116 causes the joining tape 6 to be attached.
For the wrinkles of No. 2, the position of the joining tape 62 is inspected by the sensor 118, and if there is any abnormality, the operator is notified by an alarm means (not shown). Then, when the joining of the web 32 and the web 44 is started as shown in FIG. 3, the ends of the webs 32 and 44 cut by the cutter 46 are joined to each other as shown in FIG. Are joined by. This time,
The joining tape 62 is supplied at an angle equal to the angle of inclination of the cut portions between the ends of the webs 32 and 44, and the inclination direction thereof is also supplied in the same direction as the inclination direction of the cut portions. As described above, the webs 32 and 44 are attached along the cut portion A between the end portions of the webs 32 and 44.

Therefore, in this embodiment, the ends of the webs 32 and 44 cut at a predetermined inclination angle can be joined to each other without causing wrinkles in the cut portion A and the joining tape 62. By the way, in the process of supplying the joining tape 62, it is possible to move the supply unit main body 72 in parallel with the joining tape suction surface of the joining drum 42.
2 is most preferable in that it can be supplied to the joining drum 42 without causing wrinkles. However, when the apparatus according to the present embodiment is used, since the joining drum 42 has a cylindrical shape,
For example, when the surface 86A of the peel plate 86 is set to be parallel to the suction surface 42A of the bonding drum 42 at the supply start position of the bonding tape 62 shown in FIG. 10, the parallel relationship becomes closer as the supply unit main body 72 approaches the supply end position. When it falls apart and is located at the supply end position, for example, a phenomenon occurs in which it is displaced by α ° as shown in FIG. 11. That is, there is a possibility that the bonding tape 62 may be wrinkled due to the deviation of the parallel relationship. On the other hand, even when the feeding speed of the joining tape 62 by the servo motor 104 is faster than the moving speed of the feeding section main body 72 by the servo motor 123, the joining tape 62
Wrinkles will occur on the.

Therefore, in the present embodiment, the following means are taken in order to eliminate such a problem of wrinkling. First, at the supply end position of the joining tape 62, the surface 86 A of the peel plate 86 and the suction surface 42 of the joining drum 42.
Set A parallel. This means that wrinkles are generated at the supply start position of the bonding tape 62 at the ratio of the moving speed (A) of the supply unit main body 72 by the servo motor 123 and the supplying speed (B) of the bonding tape 62 by the servo motor 104 described below. Although it can be prevented, other preventive measures cannot be taken at the supply end position. Further, the feeding speed (B) of the joining tape 62 by the servo motor 104 is slower than the moving speed (A) of the feeding section main body 72 by the servo motor 123, and the joining tape 6 is applied while applying tension to the joining tape 62.
By supplying 2, wrinkles are prevented. Incidentally, regarding the relationship between these speeds A and B, if the relationship from the supply start position to the intermediate position of the joining tape 62 is set to A> B, and from the intermediate position to the supply end position is set to A≈B. ,
The joining tape 62 can be satisfactorily supplied to the joining drum 42 without causing wrinkles or positional deviation.

[0027]

As described above, according to the flexible belt-shaped material joining device of the present invention, the joining tape supply means is inclined corresponding to the cutting line of the flexible belt-shaped material cut by the cutting means. Since the joining tape is supplied to the joining means at an angle, the ends of the flexible strips cut at a predetermined inclination angle can be joined well.

[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 cutting and joining unit.

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

FIG. 4 is an explanatory diagram of the operation of the cutting and joining unit.

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

FIG. 6 is a side view showing an embodiment of a joining tape supply device.

FIG. 7 is a top view of the joining tape supply device shown in FIG.

8 is a schematic diagram for explaining the operation of the joining tape supply device shown in FIG.

FIG. 9 is an explanatory view showing the end portions of the webs joined with a joining tape.

FIG. 10 is a side cross-sectional view showing a starting point positional relationship between the joining tape supply device and the cutting drum.

FIG. 11 is a side sectional view showing the end point positional relationship between the joining tape supply device and the cutting drum.

FIG. 12 is an explanatory view showing end portions of a web cut by a cutter.

FIG. 13 is an explanatory view showing end portions of webs joined by a conventional device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 10 ... Web joining device 12 ... Turret device 14 ... Web cutting and joining unit 16 ... Web conveying device 24 ... Old roll 28 ... New roll 32, 44 ... Web 62 ... Bonding tape 64 ... Bonding tape supply device 72 ... Supply Part main body 74 ... Moving mechanism

Claims (1)

[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. Cutting means for cutting the end of the flexible strip and the tip of the flexible strip of the new roll at a predetermined inclination angle with respect to the width direction of the flexible strip, and the cutting means. Joining means for joining the ends of the flexible strip with a joining tape,
In a joining apparatus for a flexible strip-shaped material, comprising: a joining tape feeding means for feeding the joining tape to the joining means, the joining tape feeding means cuts the joining tape from a cutting line of the flexible strip-shaped material. Is supplied to the joining means at an inclination angle corresponding to, and the joining means joins with a joining tape along the cutting line.