JP5258741B2 - Butt splicing device and butt splicing method - Google Patents

Description

  The present invention relates to a butt splicing apparatus and a butt splicing method for joining respective ends of an old web and a new web in order to continuously supply a web such as a knit material having elasticity.

  2. Description of the Related Art Conventionally, there has been known a butt splice device that joins end portions of an old web and a new web in order to continuously feed webs such as paper and film. Here, the web refers to a tape-like substrate having a certain width and continuous. For example, metal foil, paper, film and the like. In addition, the old web is a web in which most of the web roll as a web supply unit is consumed, and the new web is a web roll newly supplied.

  These butt splicing devices are equipped with an accumulator in the subsequent process, and consumption of the web roll advances, and when it is time to replace the web roll, the running old web is temporarily stopped and a new web is drawn from the new web roll. After the old web and the new web are overlapped while applying tension, the old web and the new web are cut using a cutter blade, and the end of the old web and the end of the new web are joined using a tape. At this time, the ends of the old web and the new web are clipped to eliminate sagging and wrinkles.

JP-A-5-338877

  Such a butt splicing device is intended for joining paper and film, and the following problems arise when trying to join base materials such as stretchable knits. First, since the base material itself has elasticity and does not have a strain, it cannot be cut while being pulled. Since there is no strain, after cutting, it is not possible to move to bonding for splicing. Even when the stretched web is cut with the cutter blade overlapping the old web and the new web, there is a problem that the base material cannot be cut with high accuracy by shrinking or bending from the cut portion. Further, even if suction adsorption is used to hold the base material, there is a problem that the base material is breathable and cannot be held with a sufficient suction force. Thus, there is a problem that when the web is pulled in order to eliminate wrinkles and sagging of the web, the web is stretched.

  Accordingly, an object of the present invention is to provide a butt splicing device and a butt splicing method for joining the ends of an old web and a new web in order to continuously supply a web such as a knit material having elasticity. This is the issue.

In order to solve the above problems, the invention described in claim 1
Butt splice that joins the ends of the old and new webs, with one web supplied from two web rolls wound with elastic webs as the old web and the other web as the new web A device,
A cutting work table for cutting the old web and the new web;
A cutter blade for cutting the old web and the new web;
A joining material supply means for joining the end portions of the old web and the new web using the joining material,
The web retainer provided on the cutting work table
A new web presser that pulls the new web from the web roll onto the cutting workbench, makes the web on the surface of the cutting workbench stretch and contracts, and then presses the new web against the cutting workbench;
After the old web is stopped and the old web is not stretched or contracted, it is composed of an old web presser that presses the old web and the new web against the cutting workbench ,
Along the web running direction, the new web presser, cutter blade, old web presser are arranged in this order,
The new web presser is a butt splicing device that holds only the new web on the cutting work table, and the old web holding tool holds the old web on the cutting work table in a state where it overlaps the new web. .

The invention according to claim 2 is the invention according to claim 1,
A stretchable web is a butt splice device made of a knit material.

The invention according to claim 3
Butt splice that joins the ends of the old and new webs, with one web supplied from two web rolls wound with elastic webs as the old web and the other web as the new web A method,
A cutting work table for cutting the old web and the new web;
A cutter blade for cutting the old web and the new web;
A joining material supply means for joining the end portions of the old web and the new web using the joining material,
A step of drawing a new web from one of the web rolls and placing the web on the surface of the cutting work table on the cutting work table in a state where there is no expansion or contraction;
Pressing the new web against the cutting platform upstream of the cutter blade along the web running direction ;
Stopping the running of the old web, and placing the old web on the cutting work table without stretching or shrinking;
Along the web running direction, a step of pressing the old web in the downstream of the cutter field to cut the work table in a state where it is superimposed on the new web,
Cutting the old web and the new web with a cutter blade;
Winding the old web onto a web roll;
A process of joining the ends of the old web and the new web using a joining material;
The butt splicing method includes a step of running a web in which an old web and a new web are joined together.

The invention according to claim 4 is the invention according to claim 3,
This is a butt splice method in which a web having elasticity is made of a knit material.

  According to the inventions described in claims 1 and 3, since the web on the surface of the cutting work table is not stretched or contracted, it is provided with a new web presser that presses the new web against the cutting work table. The new web on the cutting work table is not tensioned and can be in a self-weight tension state (a state where only the web's own weight acts on the web). In addition, since the old web presser that holds the old web and the new web against the cutting workbench with the old web stretched and contracted is provided, similarly, the old web on the cutting workbench has no tension. It can be in its own weight tension state. The new web and the old web are cut under their own weight tension and joined together with a joining material, so even a web such as a knit material with elasticity does not shrink or bend from the cut location. It can be cut accurately and continuously supplied to production.

  According to the second and fourth aspects of the present invention, the butt splice device and the butt splice method of the present invention can be used favorably for webs of knitted material.

It is a schematic side view of the butt splice device of the present invention. It is process drawing (step ST01, ST02) explaining operation | movement of the butt splice apparatus of this invention. It is process drawing (step ST03, ST04) explaining operation | movement of the butt splice apparatus of this invention. It is process drawing (step ST05, ST06) explaining operation | movement of the butt splice apparatus of this invention. It is process drawing explaining operation | movement of the butt splice apparatus of this invention (step ST07, ST08). It is process drawing (step ST09, ST10) explaining operation | movement of the butt splice apparatus of this invention. It is process drawing explaining operation | movement of the butt splice apparatus of this invention (step ST11). It is a flowchart explaining operation | movement of the butt splice apparatus of this invention.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a schematic side view of a butt splice device 1 of the present invention. The left and right direction toward the butt splice device 1 is the X axis, the front direction is the Y axis, the axis orthogonal to the XY plane composed of the X axis and the Y axis is the Z axis, and the rotation direction around the Z axis is the θ direction. .

  The butt splice device 1 includes a turret device 2 that switches between two web rolls in the previous process, an accumulator device 3 that temporarily stops the web travel in the subsequent process, and a control device 4 that controls the entire device. Yes.

  The turret device 2 in the previous process includes a web roll 11 that feeds the old web 10 in rolls, a web roll 13 that feeds the new web 12, a turret arm 14 that holds the two web rolls 11, 13, and a turret. It is comprised from the support | pillar 16 which supports the axial center 15 of the arm 14. As shown in FIG. The web rolls 11 and 13 are chucked and held at positions on the rotational circumference of the turret arm 14 that oppose each other by 180 °. The turret arm 14 is configured to be rotatable about an axis center 15.

  In the post-process accumulator device 3, a plurality of elevating guide rolls 20 and fixed guide rolls 21 having low inertia (hereinafter, used in the meaning of inertial force) are arranged vertically. The elevating guide roll 20 is configured to be movable up and down, and is configured to vary the distance between the fixed guide rolls 21. The web alternately passes between the elevating guide roll 20 and the fixed guide roll, is given a tension accompanying the conveyance of the web, and is supplied to the next step. When the web supply to the accumulator device 3 decreases, the lifting guide roll 20 is lowered so that the web discharge amount from the accumulator device 3 is constant. Therefore, the accumulator device 3 can store a predetermined web. This is used for the function of stopping the web passing through the butt splice device 1 when the joining operation of the old web 10 and the new web 12 is started in the butt splice device 1. The number of elevating guide rolls 20 and fixed guide rolls 21 is determined from the web transport speed and the tact time of the butt splicing device 1, and the length of the web to be stored is determined. The number of rolls is appropriately determined according to the length of the web. Seeking.

  The butt splice device 1 cuts the cutting work table 25 for cutting the web, the cutter unit 26 for cutting the web, the joining material supply means 27 for joining the old web 10 and the new web 12, and the new web 12. A new web presser 28 that presses against the work table 25 and an old web presser 29 that presses the old web 10 against the cutting work table 25 are configured.

  The cutting work table 25 is wider in the running direction of the web than the width of the web, and can be moved up and down. A rubber member 30 that receives pressure from the cutter unit 26 is attached to the cutting work table 25.

  The cutter unit 26 includes a cutter blade 31, a cutting portion presser 32, and a cutter blade traveling portion 33, and can be moved up and down and driven in a cutting direction (Y-axis direction). The cutter blade 31 is a leather blade. The cutting portion pushing tool 32 is a jig for pressing the old web 10 and the new web 12 along the cutting line of the cutter blade 31 from the upper side of the cutting work table 25 so that the pressing force on the web does not exceed a certain load. The mechanism is used. The cutter blade traveling unit 33 is configured by a servo motor and a ball screw that cause the cutter blade 31 to travel perpendicularly to the web conveyance direction (Y-axis direction).

  The joining material supply means 27 can suck and hold the back surface of the joining material 36 that joins the old web 10 and the new web 12 with the same plate member as the width of the web. In addition, the surface of the bonding material 36 is a surface on which the adhesive is applied, and the back surface is a surface on which the adhesive is not applied. The joining material 36 is cut to a length equal to or slightly shorter than the width of the web from the roll to which the joining material 36 is supplied, and is sucked and held by the joining material supply means 27. The joining material supply means 27 is configured to be capable of turning and moving up and down (operation indicated by A in FIG. 1), and presses the joining material 36 from the upper side of the Z-axis to the joint between the old web 10 and the new web 12. Can be done. As the joining material 36, for example, an adhesive tape, a paper tape, a cloth tape, or the like can be used.

  The new web presser 28 is disposed on the turret device 2 side of the cutting work table 25 and is configured to be movable up and down. The new web presser 28 is configured to press the new web 12 from above with a bar member extending in the Y-axis direction. The new web 12 is pulled out from the web roll 13 held by the turret device 2 and placed on the cutting work table 25. Then, the new web 12 is placed between the cutting work table 25 and the web roll 13 that supplies the new web 12. After the new web 12 is slackened so that the new web 12 on the cutting work table 25 is not stretched or contracted, the new web pressing tool 28 presses the new web 12 from above. Therefore, tension is not applied to the new web 12 on the surface of the cutting work table 25, and a self-weight tension state (a state where only the web's own weight acts on the web) can be maintained. Further, the new web presser 28 is turnable in the θ direction.

  The old web presser 29 is disposed on the accumulator device 3 side of the cutting work table 25 and is configured to be movable up and down. The old web presser 29 is configured to press the new web 12 and the old web 10 from the upper side with a bar member extending in the Y-axis direction. After the old web 10 between the cutting work table 25 and the web roll 11 for supplying the old web is slackened so that the old web 10 on the cutting work table 25 is not stretched or contracted, the old web presser 29 is The old web and the new web 12 are pressed from above. Therefore, tension is not applied to the old web 10 on the surface of the cutting work table 25, and the self-weight tension state can be maintained.

  Since the old web 10 and the new web 12 on the surface of the cutting work table 25 are in a self-weight tension state, the web is not stretched or pulled during the cutting work. Therefore, it is possible to maintain a good state for joining base materials such as stretchable knit materials.

  A method of joining the old web and the new web using such a butt splice apparatus 1 will be described with reference to the process diagrams of FIGS. 2 to 7 and the flowchart of FIG.

  First, as shown in FIG. 2A, the turret arm 14 of the turret device 2 is in a horizontal state, and the web roll 11 and the old web 10 are predetermined via the butt splice device 1 and the accumulator device 2 (not shown). The description starts from a state where the sheet is conveyed at a speed of. A web roll 13 around which the new web 12 is wound is chucked and held on the turret arm 14 at a position facing the web roll 11 (step ST01).

  Next, as shown in FIG. 2B, when the remaining amount of the old web 10 reaches a predetermined amount in the web roll 11, the turret arm 14 of the turret device 2 is turned 90 degrees (step ST02).

  Next, as shown in FIG. 3A, the new web 12 is pulled out from the web roll 13 and placed on the surface of the cutting work table 25 without wrinkles or elongation. The web roll 13 is rotated so that no tension is applied to the new web 12, so that sagging occurs between the cutting work table 25 and the web roll 13. Although it may be performed automatically, the operator may set the new web 12 on the cutting work table 25 (step ST03).

  Next, as shown in FIG. 3B, the new web presser 28 is lowered to hold the new web 12 on the cutting work table 25. When the holding of the new web 12 is completed, the cutting work table 25 is raised and arranged at a predetermined distance from the old web 10 that is traveling (step ST04).

  Next, as shown in FIG. 4A, the back surface of the joining material 36 having a predetermined length is sucked and held by the joining material supply means 27. The elevating guide roll 20 of the accumulator device 3 is lowered (not shown), and the old web 10 traveling on the butt splice device 1 is stopped (step ST05).

  Next, as shown in FIG. 4 (b), the web roll 11 around which the old web 10 is wound is further rotated to unwind the old web 10 and loosen it on the cutting work table 25. Make sure there is no stretch or shrinkage. Then, the old web presser 29 is lowered, and the old web 10 and the new web 12 are stacked and held on the surface of the cutting work table 25. (Step ST06).

  Next, as shown in FIG. 5A, the cutter unit 26 is lowered and both sides of the cut portions of the old web 10 and the new web 12 are pressed by the cutting portion presser 32. While being held at a predetermined pressure, the cutter blade 31 of the cutter unit 26 is moved perpendicularly to the conveying direction (Y-axis direction) to cut the old web 10 and the new web 12 (step ST07).

  Next, as shown in FIG. 5B, the cutter unit 26 is raised to the standby position, and the cutter blade 31 is returned to the standby position. The web roll 11 is reversed and the old web 10 is wound around the web roll 11 (step ST08).

  Next, as shown in FIG. 6A, the joining material supply means 27 is turned and lowered, and the ends of the old web 10 and the new web 12 are joined by the joining material 36. When the joining is completed, the suction of the joining material 36 held by the joining material supply means 27 is released (step ST09).

  Next, as shown in FIG. 6B, the joining material supply means 27 is raised and turned to return to the standby position. The new web presser 28 and the old web presser 29 are raised to release the holding of the old web 10 and the new web 12 on the surface of the cutting work table 25, and the lifting guide roll 20 of the accumulator device 3 is raised (see FIG. The web travel is resumed (step ST10).

  Next, as shown in FIG. 7A, the turret arm 14 of the turret device 2 is turned 90 °, the cutting work table 25 is lowered, and the state returns to step ST01. The web roll 11 that has been supplying the old web 10 is replaced to prepare for the next web switching (step ST11).

  The piece of the new web 12 remaining on the cutting work table 25 is removed by the operator. The new web presser 28 is placed on the upper side of the running web by turning in the θ direction.

  Through the above operation, the old web 10 and the new web 12 are joined, and even a stretchable knit material is cut and continuously conveyed without shrinking or bending from the cut location. Is done.

DESCRIPTION OF SYMBOLS 1 Butt splice apparatus 2 Turret apparatus 3 Accumulator apparatus 4 Control apparatus 10 Old web 11 Web roll 12 New web 13 Web roll 14 Turret arm 15 Axis center 16 Support | pillar 20 Movable conveyance roll 21 Fixed conveyance roll 25 Cutting work table 26 Cutter unit 27 Connection Matching material supply means 30 Rubber member 31 Cutter blade 32 Cutting part presser 36 Bonding material

Claims (4)

Butt splice that joins the ends of the old and new webs, with one web supplied from two web rolls wound with elastic webs as the old web and the other web as the new web A device,
A cutting work table for cutting the old web and the new web;
A cutter blade for cutting the old web and the new web;
A joining material supply means for joining the end portions of the old web and the new web using the joining material,
The web retainer provided on the cutting work table
A new web presser that pulls the new web from the web roll onto the cutting workbench, makes the web on the surface of the cutting workbench stretch and contracts, and then presses the new web against the cutting workbench;
After the old web is stopped and the old web is not stretched or contracted, it is composed of an old web presser that presses the old web and the new web against the cutting workbench ,
Along the web running direction, the new web presser, cutter blade, old web presser are arranged in this order,
The new web presser holds only the new web on the cutting work table, and the old web holding tool holds the old web on the cutting work table in a state where it overlaps the new web . In the invention of claim 1,
Butt splicing device made of a knit material. Butt splice that joins the ends of the old and new webs, with one web supplied from two web rolls wound with elastic webs as the old web and the other web as the new web A method,
A cutting work table for cutting the old web and the new web;
A cutter blade for cutting the old web and the new web;
A joining material supply means for joining the end portions of the old web and the new web using the joining material,
A step of drawing a new web from one of the web rolls and placing the web on the surface of the cutting work table on the cutting work table in a state where there is no expansion or contraction;
Pressing the new web against the cutting platform upstream of the cutter blade along the web running direction ;
Stopping the running of the old web, and placing the old web on the cutting work table without stretching or shrinking;
Along the web running direction, a step of pressing the old web in the downstream of the cutter field to cut the work table in a state where it is superimposed on the new web,
Cutting the old web and the new web with a cutter blade;
Winding the old web onto a web roll;
A process of joining the ends of the old web and the new web using a joining material;
A butt splicing method comprising a step of running a web in which an old web and a new web are joined together. In the invention of claim 3,
A butt splice method in which the elastic web is made of knit material.

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