JPH0228457A - Lap-joint method and device of paper tape for manufacturing tape,particularly corrugated board paper - Google Patents

Abstract

PURPOSE: To splice tapes at a high speed in the shortest time by a simple method by accelerating a roll of a second tape by the attraction of the tape before the tape rests in a connecting position or even when the tape rests. CONSTITUTION: A retention roller 32 horizontally moves along a moving guide 56. When the tape end 30 moves up to a work position A by the action of a pressurizing direction changing roller 25 and a knife carrier 35, a previously prepared tape 28 moves through direction changing rollers 31, 33. When the pressurized pressurizing direction changing roller 25 with the knife carrier 35 comes to the work position A, a switch for moving the retention roller 32 is immediately closed in order, so that the retention roller 32 moves vertically to a tape piece between the direction changing rollers 31, 33 to extend the tape piece further while drawing a loop 57. However, since the start 30 of the tape 28 is sandwiched and fixed by the work position A, when the loop 57 is formed, tension and accordingly, attraction such as rotating a roll 6 in the delivery direction act on the tape 28.

Description

Detailed Description of the Invention <Industrial Field of Application> The present invention relates to a method for splicing tapes, in particular corrugated paper manufacturing paper tapes, having the features of the generic concept of claim 1, and furthermore, relates to a tape splicing device based on the generic concept of claim 1O.

<Prior art and its problems> A method of splicing paper tapes for manufacturing corrugated paperboard is well known from West German Patent Application No. 2129903.

In this case, the beginning of the second tape prepared in advance to be drawn out from the roll and the first tape being fed out from the roll are connected, for example, when the first tape reaches its end.

At this time, when the first tape reaches the connection position, it is stopped, and when both tapes are connected, the first tape is cut! While the tape was at rest, the tape being unrolled from the tape splicing device was being removed from a storage device with one or several tape loops.

After the two tapes were connected, the tape that had been kept stationary and the second tape roll prepared in advance were accelerated by pulling the connected tape.

The disadvantage in this case is that the comparatively heavy pre-prepared 20-piece can be loaded at a speed of V. It is necessary to accelerate from to the final velocity ■.

In high-efficiency corrugated paperboard equipment, this lap joint and a second
Relatively rapid acceleration of the tape to a high final velocity is required.

<Means for Solving the Problems> Therefore, the object of the present invention is to provide a method and apparatus that can perform tape splicing in a simple manner and at high speed within the shortest possible time.

The present invention attempts to solve this problem by the features of claim 1.10.

In other words, while the tape is at rest at the splicing position, or before that, the second tape with a roll is already accelerated, so that the lap splice is not performed until after the tape is spliced. The time required for processing can be saved even at high speeds.

If the second tape roll is stretched by creating a tape loop between the beginning of the second tape and the roll, the 20th-
There is no need to separately drive the motor.

This method of driving and accelerating the second tape roll is easy to manufacture. Also, after construction of the present invention, such tape loops can be used for storage purposes and/or for tape tension control.

An apparatus for carrying out a method of this type includes, between the roll of the second tape and the fixed beginning of the second tape, at least one retention roller movable across the tape strip. and the drive for moving it is made controllable in a time- and/or force-dependent manner.

Other embodiments of the present invention are clear from the subframes.

<Example> The present invention will be described in more detail using an illustrated example.

FIG. 1 is a side view of a lap splicing device with a rewinding rack, which is provided with a tape roll being fed out on the right side and a tape roll prepared in advance on the left side.

FIG. 2 is the same as FIG. 1, except that the tape roll being fed out is on the left side, and the roll prepared in advance for feeding is on the right side.

FIG. 3 is a drawing showing the running of the tape from the roll to the splicing position.

The invention will now be described in connection with a paper tape for the manufacture of corrugated paperboard.

Of course, instead of paper tape, other types of tape can be used to manufacture other products.

A device for splicing two paper tapes together includes a splicing device 1 and a rewinding frame 2.

As usual, the unwinding frame 2 is equipped with two pairs of arms 3.4, to which the paper roll 5 being fed out and the paper roll 6 prepared in advance for later feeding can be rotatably attached. be.

The paper roll 5.6 is usually equipped with a control device that can be controlled and adjusted in time and can be braked.

The stand 8 of the unwinding frame 2, attached to the bottom 7, extends upwards into a support 9, which horizontally supports the frame 10 of the splicing device 1. Between the frames 10 with removable front parts, there is a deflecting roller 11, 12 at the right end, through which the tape 13 is being fed.

Tape 1 being fed out by pressure/direction changing roller 14
3 are surrounding it. This pressure/direction changing roller 1
When a tape 13 extends from 4 and moves horizontally by acting on a movable retention roller 15 against a constant force, this roller moves from the fully tensioned end position to the empty position shown by the dotted line. The tape forms a loop 16 up to the point. Tape 1 horizontally from retention roller 15
3 extends to reach a discharge roller 17 at the left end of the frame 10. From here, the tape 13 is pulled with a corresponding force and fed into a complete corrugated paperboard system (not shown).

The pressure/direction changing roller 14 is rotatably arranged on a swingable seesaw table 20. The seesaw table 20 is rotatable around a central axis 21 whose position is fixed. A pressure/direction changing roller 22 is further rotatably disposed at one end of the seesaw facing each other. The pressure/direction changing rollers 14, 22 are movable relative to each other.

One holding roller 25 is arranged in a guideway 26 under the pressure/direction changing roller 14 in a rotatable and movable state. This holding roller 2
5 fixes the beginning 27 of the tape 28 drawn out in advance from the tape roll 6 on the arm pair 4 at a working position A below the pressure/direction changing roller 14.

For this purpose, it is also possible to apply an adhesive layer 29 to the holding roller 25.

In the ejecting position B, the holding roller 25 occupies the unpositioned left end of the frame 10, indicated by the dotted line in FIG. The holding roller 25 reaches this discharge position B via a downwardly curved guideway 26. At the discharge position B, the holding roller 25 is fixed in a rotating position.

First, the end 30 of the paper tape 28 prepared in advance is placed on a direction changing roller 31. It passes through a retention roller 32 and then to a retention roller 25.

A girder-shaped knife carrier 35 is located in the exit position B next to the holding roller 25. The main knife carrier 35 is likewise movable to this ejection position B via the guideway 26. At the main discharge position B, the knife carrier 35 presses the holding roller 25 and becomes interlocked with the main roller.

The pressure surface 36 on one side 37 of the knife carrier 35 is curved to match the surface of the holding roller 25. Pressure surface 36
can be lined with a suitable elasticity.

The tape terminal 30 preferably has a width 5c with adhesive on both sides.
applying an adhesive layer, such as the band 40 of m, or spraying other adhesives, such as hot melt;
Or use a connection layer with caterpillars. A knife is used behind the adhesive band 40 to manually or automatically cut the terminal 30 into a predetermined size with the help of a knife protrusion (not shown).

Knife carrier 3 interlocked with holding roller 25
5 moves to the working position A in FIG. 1 together with the tape 28.

It is clear that in that case the tape 28 passes through a deflection roller 33 which is preferably located directly above the deflection roller 31. The knife carrier 35 also moves into a horizontal position. At this time, the holding roller 25 is maintained in a position in which the tape end 30 surrounds the roller 25 semicircularly.

The knife carrier 35 also has a curved pressure surface 43 similar to the pressure surface 36 on the side opposite to the side 37.

In addition, the carrier is provided with a flat, preferably horizontal surface 44 over which the tape 13 runs during unrolling.

Furthermore, the knife carrier 35 has two
Attach 45, 46 serrated knives (Figure 3). These knives can be pushed out alternately from a retracted position to an activated position; the knife drive required for this purpose is not shown. The knives 45, 46 extend obliquely to the tape 13. The outwardly extending knife projects into the wedge-shaped space 47 created between the rollers 14, 25 which are pressed together. As a result, the tape 13 being unrolled is cut at the shortest distance from the line of contact of the rollers 14.25. This distance depends on the width of the connection layer, e.g. adhesive band 4
Almost corresponds to 0.

The knife carrier 35 follows the guideway 26 to the right (FIG. 1).
It is possible to move to the discharge position (B') on the right side. Once in this position, the knife carrier is moved to the second holding roller 39
As already mentioned, the right arm pair 3 pinches the beginning 30' of the previously prepared paper roll 6 (
Figure 2).

As can be seen from FIG. 1, a pressure girder 50 that can move up and down is placed next to the pressure and direction conversion roller 14.22.
51 are arranged. Both girders are provided with a friction lining 52 on the underside. The pressure girders 50, 51 alternately press the upper surface 44 of the knife carrier 35, so that the pressure girders 50, 51 press the top surface 44 of the knife carrier 35 alternately.
The paper tape 13 passing between the lower surface of the knife girder 51 and the upper surface 44 of the knife girder 35 is held firmly.

Moreover, in contrast to the retention roller 32 at the left end of the frame 10, there is an additional retention roller 55 at the right end of the frame 10. Then, the tape end 30' is first passed through the tape 55.

Retention roller 32 moves horizontally along moving guide 56. When the tape end 30 is moved to the working position A by the action of the pressure/direction changing roller 25 and the knife carrier 35, the previously prepared tape 28 is moved via the direction changing roller 31.33.

As soon as the pressure and deflection roller 25 with the pressurized knife carrier 35 comes to the working position A, a switch is activated to move the retention roller 32 in sequence or under time control. As a result, retention roller 3
2 moves perpendicularly to the tape strip between the deflection rollers 31, 33, drawing a loop 57 and further extending the tape strip. However, since the beginning 30 of the tape 28 is clamped and fixed at the working position A, when the loop 57 is formed, there is a pulling force on the tape 28 and therefore an attractive force that rotates the roll 6 in the unwinding direction (counterclockwise). will come into play.

The movement speed of the retention roller 32 can be controlled to be constant or to increase. Now, when the retention roller 32 reaches the right end position indicated by the dotted line in FIG.
It is preferable to set the moving speed so that the speed is close to V/2 of the discharge speed V from the splicing device 1 by the discharge roller 17.

Therefore, the terminal 30 and the tape 13 being fed out can be connected before or during the retention roller 32 reaches its final position. To do this, the pressure girder 50 is pressed against the knife carrier 35. This causes the tape 13 to stop at this position.

The machinery of the corrugated paperboard installation following the splicer 1 continues to exert an attractive force on the tape 13, so that the retention roller 15 moves to the left in FIG. 1, reducing the loop 16.

The connection between the end 30 of the tape 28 and the tape 13 is caused by the pressure of the roller 14 on the holding roller 25, which causes the seesaw table 20 to pivot clockwise around the pivot shaft 21. As a result, the tape 13 is pressed against the adhesive band 40 at the end 30 of the tape 28 to form an adhesive connection.

At the same time, the pressure/direction change roller 22 moves toward the pressure/direction change roller 14 and presses it.

A serrated knife 45 then cuts the tape 13. As a result, the tape 1 formed by the pressure girder 50 and the knife carrier 44 is
The fixation of 3 ends. Then, the pressurizing girder 50 rises again. The pressing of the knife carrier against the holding roller 25 ends in the same way, and the knife carrier 35 moves away to the right.

Furthermore, the tape attraction forces produced by the machines of the corrugated paperboard installation following the splicing device 1 result in the tape 28, which is now connected to the tape 13, being pulled out of the roll 6. The adhesive connection at this time is further pressed by a pressure roller 22.

The retention roller 32 located on the right side is
From now on, it can be returned to the ejection position at the left end of the frame 10 at a uniform or variable speed using a predetermined uniform or variable force. The loop 57 then serves as a storage loop.

It is clear here that instead of the retention roller 32, a number of acceleration and storage loops 57 can be provided.

When the paper roll 5 being fed out is on the left arm pair 4 in FIG. 2, a retention roller 55 is also arranged on the previously prepared tape 28 of the paper roll 6 on the arm pair 3. The main retention roller 55 is movable on a guide 56 along which the retention roller 32 moves.

The drive, arrangement, and function of this retention roller 55 are the same as that of the retention roller 32.

In this case, the end 30' is the pressure/direction changing roller 39
After being moved by the knife carrier 35 to the working position A of FIG. 2, the retention roller 55 creates a further loop 57' against the strip of tape running vertically between the deflecting rollers 11,12. The retention roller 55 then reaches its final position on the left, indicated by the dotted line in FIG. In either case, the placement and movement of retention roller 55 will match the placement and movement of retention roller 32. Also in this case it is also possible to attach a number of retention rollers 55 in order to form a number of acceleration and storage loops 57'.

As already explained, loop 57 or 57' will perform a storage effect similar to storage loop 15.

Additionally, retention rollers 15.32.55 can also be used to control tape tension. In that case, the retention roller 15 is interlocked and fixed at the final position, so the retention roller 15 is fixed to the left of the target position (center position).
Or move it a certain horizontal distance to the right in advance. The retention roller will then resist the tape tension created by the machine (measuring device (not shown), e.g. a potentiometer) to
5 and sends a signal to the regulator, which compares this signal with a predetermined value corresponding to the predetermined position of the roller 15. As a result, the braking moment applied to the roll 5 during unrolling can be controlled accordingly (position control).

As an alternative to this, both retention rollers 32.5
5 can also be used to control tape tension. In this case, the effective one of the retention rollers 32.55 forms a short loop and is brought into the defined position.For this defined position, the retention roller 32. When a roller is replaced, the other retention roller acts as a compensation roller.

[Brief explanation of the drawing]

Fig. 1 is a side view of a splicing device equipped with an unwinding stand, which has a tape roll being fed out on the right side and a tape roll prepared in advance on the left side, and Fig. 2 is a side view of a splicing device with a tape roll being fed out on the left side. FIG. 3 is a side view of the splicing device equipped with a tape roll prepared in advance for feeding on the right side, and is an explanatory view showing the running of the tape from the tape roll to the splicing position. 1... Overlap splicing device 2... Unwinding frame 6... Second tape roll 13... First tape 14.22... Roller for pressure/direction change 15.32
... Retention roller 25 ... Retention roller 26 ... Guideway 28 ... Second tape 35 ... Knife carrier 57 ... Tape loop Applicant's agent Patent attorney Kazu 1) Showa procedural amendment (Spontaneous) Display of the case 1999 Patent Application No. 115902 2, Name of the invention Tape, especially method and device for splicing paper tape for corrugated paper manufacturing 3, Relationship with the amended person case

Claims (15)

[Claims] (1) Connect the beginning of the second tape prepared in advance to be pulled out from the roll with the first tape being fed out from the roll at the connection position where the tape is stationary, then cut the first tape, and then connect the second tape to the first tape that is being fed out from the roll. In particular, in the splicing method of corrugated paper manufacturing paper tape in which the rolls of tape are accelerated by pulling the tape, the roll of the second tape is accelerated by the gravitational force of the tape before or even while the tape is at rest at the splicing position. A method for splicing tapes, particularly paper tapes for corrugated paper manufacturing, characterized by: (2) The tape attraction force for the second roll of tape is generated by creating at least one tape loop between the beginning of this tape and the roll of this tape. Method. 3. The method of claim 2, wherein the tape loop is formed by a driven retention roller movable relative to the tape strip of the second tape. 4. The method of claim 3, wherein the drive force of the retention roller is greater than the drive force required to roll the second tape. 5. The method of claim 4, wherein the final speed of movement of the retention roller is approximately the same as the final speed, V, of the first tape. 6. The method of claim 4, wherein the driving force of the retention roller is less than the attractive force of the first tape during unwinding. (7) The method according to claim (3), characterized in that the drive of the retention roller for generating the retention loop is controlled depending on time and/or force. (8) A method according to claim 3, characterized in that the reverse drive of the retention roller for releasing the retention loop is controlled in a time- and/or force-dependent manner. 9. The method of claim 1, further comprising utilizing the constructed tape loop as additional tape storage. (10) Between the second tape roll and the beginning of the tape to which the main tape is fixed, there is a retention roller that moves across the tape piece and provides a drive for its movement in time and/or or a device for splicing tapes, in particular corrugated paper tapes, characterized by force-dependent control. 11. The device according to claim 10, wherein the retention roller between the discharge position and the terminal position is driven back and forth or is movable against a resistive force. (12) The apparatus according to claim 11, wherein the final moving speed of the retention roller is V/2 of the tape running speed V. (13) Claim (10) characterized in that the moving force and/or speed in the direction in which the product loop is generated or in the direction in which the loop dissolves can be controlled depending on time and/or force.
, (11) or (12). (14) There is also retention on the first tape and the second tape.
11. Device according to claim 10, comprising a stand for double rolls, characterized in that rollers are arranged thereon, and a splicing device arranged thereon. (15) The device according to claim 14, characterized in that the movement guide is also attached to the second retention roller.