JPH0218247A - Lap joint device of paper tape for manufacturing tape, particularly corrugated board - Google Patents

Abstract

PURPOSE: To splice first and second tapes without generating a slip by arranging a sandwiching device in a first roller for sandwiching the first tape, and providing a knife for cutting into a wedge shape of a pair of mutually pressurizing rollers. CONSTITUTION: A pressurizing girder 50 arranged in the vicinity of a first roller 14 is moved downward, and the friction surface 52 is pressed to a delivering first tape 13 and the surface 44 of a knife carrier 35 existing under it to fix and hold the first tape 13. Next, a first pressurizing/converting roller 14 arranged on a seesaw stand is pressurized against a second roller 25 to adhere the first and second tapes 28, 13 by the pressurizing clearance. Next, the delivering tape 13 is cut by a knife 45 of the knife carrier 35 for cutting into a wedge shape 47 in the vicinity of a pair of rollers 14, 25, and the start 30 of the second tape (a new tape) 28 having an adhesive band 40 is spliced to the first tape 13 without generating a slip.

Description

Detailed Description of the Invention <Industrial Application Field> The present invention relates to a tape having the features of the generic concept of claim 1, particularly to an apparatus for splicing paper tapes for manufacturing corrugated paperboard. be.

<Prior art and its problems> This type of device is disclosed in West German Published Patent Specification No. 2129903,
It is well known as 2330945. In this case, the unwound tape is guided via direction changing rollers to a storage device located above the tape unwinding frame.

Another pre-prepared tape for connection with the tape being fed out is fixed by a suction nozzle to a roller placed next to it. A band with adhesive on both sides is attached to the end of this previously prepared tape. In order to connect both tapes, a previously prepared holding roller that fixes the tape is pressed against a roller that changes the direction of the tape that is being fed out.

After this, the tape that has been pulled out and connected is cut with a knife after the tape roller that is being fed out.

The disadvantage in this case is that ears remain even after connecting both tapes. As a result, it becomes difficult to feed out the tape.

In addition to this, there is a risk that the tape will peel off because the adhesive connection is made under pressure for a relatively short period of time.

The invention is therefore based on the problem of improving the known device in such a way that the splicing of both tapes can be carried out without the occurrence of ears and that the safety of the splicing can be guaranteed.

<Means for Solving the Problems> According to the present invention, the present problems can be solved by the features set forth in claim 1.

This means that the splicing of both tapes is possible without the occurrence of selvages, which ensures increased splicing safety even when the tapes are unrolled over the entire corrugated board system.

Other embodiments of the present invention are apparent from (2) the following claims.

BRIEF DESCRIPTION OF THE DRAWINGS The present invention will be described below with reference to the drawings in connection with a paper tape for manufacturing corrugated paperboard.

It can also be used to manufacture other products using other types of tape instead of paper tape.

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

The unwinding frame 2 has two arm pairs 3.4 as usual.
A paper roll 5 being fed out and a paper roll 6 prepared in advance to be fed out later are rotatably attached to this.

Usually, the paper roll 5.6 is equipped with a braking device that can be controlled and adjusted in time, allowing it to be braked.

The stand 8 of the unwinding frame 2 attached to the bottom 7 extends upward to form a support 9, which serves as the flap 1/2 of the splicing device 1.
-Horizontally supports MulO.

Between the frames 10 with removable front parts, there is a deflection roller 11.12 at the right end, through which the first tape 13 is being fed. The tape 13 that is being fed out surrounds the pressure/direction changing roller 14. When the tape 13 extends from this pressure/direction changing roller 14 and the movable retention roller 15 moves horizontally against a constant force, this roller moves from the fully tensioned roller position to the empty position shown by the dotted line. Form a tape loop 16 up to the position.

The tape 13 extends horizontally from the retention roller 15 and reaches the discharge roller 17 at the left end of the frame 10.

From there, the tape 13 is further fed to the entire corrugated board manufacturing plant, which is not shown.

The pressure/direction changing roller 14 is rotatably arranged on a seesaw table 20 which is rotatable.

This seesaw table 20 is rotatable around a central axis 21 whose position is fixed. A pressurizing/direction changing roller 22 is further rotatably disposed at one end of the seesaw located opposite to each other.

The pressure/direction changing rollers 14, 22 are movable relative to each other.

Below the pressure/direction changing roller 14, one holding roller 25 is arranged in a guideway 26 in a rotatable and movable state.

This holding roller 25 is the pressure/direction changing roller 1
In the working position A below the arm pair 4, a beginning 27 of a previously prepared tape 28 drawn from the paper roll 6 on the arm pair 4 is fixed.

For this purpose, the holding roller 25 can also be provided with an adhesive layer 29 and/or a suction nozzle.

In the ejection position (B), the holding roller 25 occupies the left end position 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 at the rotating position.

The end 30 of the paper tape 28 prepared in advance is first passed through the direction changing roller 31 and then passed through the holding roller 25.

The girder-shaped knife carrier 35 is located next to the holding roller 25 in the discharge position (B). The main knife carrier 35 can also be moved to this ejection position (B) by the guideway 26 in the same way. In this ejection position (B), the knife carrier 3
5 pressurizes the holding roller 25, and the holding roller 2
It is in an interlocked state with 5.

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
may be provided with a suitable elastic lining.

The tape terminal 30 preferably has a width of 5 cm and is adhesive on both sides.
An adhesive layer, such as the band 40, may be applied, or another adhesive, such as hot melt, may be applied, or a connecting layer with caterpillars may be applied. Behind the adhesive layer, the end 30 is manually or automatically cut to a certain size with a knife 41 with the help of a knife protrusion 42.

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 the tape 28 then passes around the deflecting roller 32. At that time, the knife carrier 35 also moves to the horizontal position. and holding roller 25
is maintained in a position where 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. These knives can be pushed out alternately from a retracted position to an activated position, so that the necessary knife drive is not shown.

The knives 45, 46 extend obliquely to the tape 13.

As can be seen from FIG. 3, the knife 45 on the left side extending outward is
A gap formed between the rollers 14.25 that press against each other (projects into the wedge-shaped space 47), so that the tape 13 being unrolled is cut at the shortest distance from the line of contact of the rollers 14.25. This distance approximately corresponds to the width of the connecting layer, for example the adhesive band 40.

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 holds the beginning 30' of the paper roll 6 prepared in advance (
Figure 2).

As you can see from Figure 1, the pressure/direction changing roller (
14, 22), there is a pressure girder (5) that can move up and down.
0,51) are arranged.

These girders have a friction lining 52 on their underside. The pressure girders 50, 51 alternately press the upper surface 44 of the knife carrier 35, so that the pressure girders
50, 51 and the upper surface 44 of the knife girder 35.
The paper tape 13 passing through the space is held firmly.

A further embodiment of the movable holding roller 39 and the knife carrier 35 is shown in FIGS. 5.6 and 7.

In this case, the guideway 26 consists of one horizontal intermediate section 60 made from a rail 61 with a U-shaped cross section. Both end portions 62 of the guideway 26 are comprised of one horizontal rail 63 which also has a U-shaped cross section.

In the position shown in FIG. 5, the rails 61, 62 are aligned with each other. The length of the terminal portion 62 is the length of the rail 61.
62. A wheel 64 with a roller 65 for the holding roller 39 (corresponding to the previously prepared paper roll 6 in the right-hand position, FIG. 2) and a roller 67 for the knife carrier 35.
The dimensions are such that the terminal portion can be accommodated with a certain distance between the attached wheel 66 and the attached wheel 66.

A protrusion 68 is fixed to the terminal portion 62 so as to be rotatable around a pivot shaft 69 . As a result, this terminal portion 62 moves from the receiving position shown in FIG.
It moves to the inclined ejection position (B') in the figure, which becomes optimal for receiving the end portion 30 of the paper tape 28 prepared in advance.

This lowering of the terminal portion 62 can be carried out manually or automatically by means of an operating device 70 consisting of a connecting rod 71, for example.

As can be seen from FIG. 6, the right arm 3 (
FIG. 2) turns into an overturned position to receive the end 30' of the previously prepared paper roll 6 above.

After the terminal 30' of the paper tape 28 prepared in advance passes,
The knife carrier 35 moves into the pressing position, at which time the right pressing surface 38 interacts with the roller 39 . The roller 39 and the knife carrier 35 can be interlocked in this position.

The knife 41, in conjunction with a knife protrusion 42 (see FIG. 7) which can be freely positioned on the wheel 64 of the holding roller 25, cuts the end 30' of the paper tape 28 prepared in advance.

Then, at a predetermined time, the terminal portion 62 is returned to the position shown in FIG. 5 and interlocked. Then, the roller 39 to which the knife carrier 35 with the paper tape 28 is attached is attached to the roller 2.
2 Return to working position A below.

The present lap splicing device 1 operates as follows.

First, as shown in FIG. 1, the paper roll 5 is rewound in the direction of the arrow, and the paper tape 13 to be fed out is moved by the direction change rollers 11 and 12 and the pressure/direction change roller 1.
4, and travels to the discharge roller 17 via the retention roller 15.

Attach a new paper roll 6 to the arm pair 4 on the left side of the center plane (X-X). The end portion 30 pulled out from the paper roll 6 occupies the position indicated by the dotted line.

That is, the terminal portion is transferred to the holding roller 25 (indicated by a dotted line) located at the discharge position B via the downward direction changing roller 31.
reach.

When the knife carrier 35 presses the roller 25, the terminal 30
′ is fixed. A knife 41 with a blade protrusion 42 cuts this end portion 30. The tape end then projects approximately 5 cm from the knife carrier 35. A band 40 of equal width and adhesive on both sides is attached to the end, or another adhesive is applied to the end of the band.

Subsequently, the beginning of the paper 30 is placed, and the holding roller 25 together with the interlocked knife carrier 35 moves to the working position A directly below the pressure/direction changing roller 14; It will be moved to the left side of the center plane (X-X) and located. The tape 13 that is being fed out surrounds the main roller 14.

Here, the holding roller 25 in the working position MA fixes and supports the end of the new tape 28 prepared in advance at approximately the center of the surface. Rollers 14.25 are still at a slight distance from each other.

When the end of the tape 13 of the paper roll 5 is reached, the splicing process is automatically started, possibly by means of a release signal. To do this, the tape 13 being fed out is first stopped in order to adhere the beginning 30 of the new tape 28 prepared in advance with the adhesive band 40 to the tape 13 being fed out while avoiding the generation of ears. For this purpose, the pressure girder 5 located next to the roller 14 on the right side of FIG.
0 downward in the direction of the arrow shown (Fig. 3),
The friction surface 52 is pressed against the tape 13 being unrolled and against the underlying surface 44 of the knife carrier 35 . As a result, the brake is applied to the tape 13 being fed out, and ■=0. Pressure garter 50 instead of friction lining 52
It is also possible to use a vacuum suction surface.

Subsequently, the pressure/conversion roller 14 rotatably positioned on the seesaw stand 20 presses in the direction of the arrow against the roller 25 due to a slight rotation of the seesaw stand 20, so that both tapes 30.13 are bonded in this pressurized gap. The pressure/direction changing roller 14 is preferably provided with an elastic lining.

The tape 13 being unrolled is cut by the knife 45 of the knife carrier 35 in the wedge shape 47 near both rollers 14.25.

The length of the free end of the paper tape 13 during unrolling corresponds approximately to the width of the adhesive band 40. The length or width is preferably 50 mm. Since tape attraction is still applied to the tape 13 being fed out via the storage loop 16 which becomes progressively shorter, the interlock between the holding roller 25 and the knife carrier 35 is released, and the knife carrier 35 is separated from the roller 25. Later, a new tape 28 prepared in advance is pulled out along the rotating roller 25. The rollers 14 in the pressing position act to strongly press the tape parts to be bonded together at this time.

Another direction change/pressure roller 22, which is not in the working position and has turned a little further, moves in the direction of the arrow in the direction of the roller 14 on the seesaw table 20, and the roller 14
It is preferable to move to the pressurizing position (Figure 3).
.

In this way, the tape 13.28 passing between these rollers 22.14 will be pressed against the mold after adhesion.

As a result, the connection between these two tapes 13 and 28 after adhesive pressure is applied becomes even more reliable (FIG. 4).

The roller 25 (FIG. 1.2) is now moved to the ejection position B at the left end of the frame IO. The tape 13 of the paper roll 5 on the left pair of carrier arms 4 runs counterclockwise, as shown in FIG. It reaches the turned direction change/pressure roller 14, retention roller 15, and discharge roller 17.

The knife carrier 35 moves to the right in FIG. 1 to a lower, remote clamp roller 39. At this point, the newly prepared paper roll 6 is attached to the right holding arm 3.

The terminal end 30' is then passed through the deflection roller 11 to the holding roller 39, cut as described above, and sandwiched between the knife carriers 35.

In the new splicing process, the holding roller 39 with the interlocked knife carrier 35 moves into the working position A, so that the holding roller 39 is located below the deflection and pressure roller 22. A pressure girder 51 is placed above the knife carrier 35.

The already explained lap splicing process is newly repeated until the given time. The knife carrier 35 is then moved again to the indicated position at the left end of the frame IO shown in FIG.

As is clear from FIG. 8, the pressure and direction changing rollers 14 and 22 with the pressure girders 50 and 51 are connected to the unit 80.
It can also be summarized as 81. Both units 80, 81 can be moved relative to each other into a pressurizing position, or one unit 80 can be fixed in position and the other can be rotated to pressurize the other unit. Moreover, the pressure/direction changing rollers 14, 22 and the pressure girders 50, 51 are arranged so as to be movable up and down.

[Brief explanation of drawings]

Figure 1 is a side view of a tape splicing device with a rewinding stand that has a tape roll being fed out on the right side and a tape roll prepared in advance on the left side. Fig. 3 is a detailed illustration of Fig. 1, Fig. 4 is a detailed illustration of the tape spliced, and Fig. 5 is a guideway with an operating device. (Guideway) A side view of the terminal part. Figure 6 is a side view of the terminal part showing the point where the guideway terminal part has turned. Figure 7 is a side view of the terminal part showing the place where a new tape prepared in advance is applied. , FIG. 8 is a detailed explanatory diagram when the implementation format is changed. 13... First tape 20... Seesaw stand 26... Guideway 35... Knife carrier 50.51... Pressure girder 14, 22... First roller 25.39... Second roller 28...Second tape 45...Knife applicant's agent Patent attorney Kazu 1) Showa F I G. FIG. Procedural amendment (spontaneous) 1. Indication of the case 1999 Patent Application No. 1159 (No. 11 2) Name of the invention Tape, especially a splicing device for corrugated paper manufacturing paper tape 6, Contents of the amendment (1) Patent application of the request Submit a correction application with the representative pitch name written in the person column. ■ Submit an engraving drawing (with no changes in content). ■ Submit a power of attorney and its translation. (a) Priority certificate and I will submit the translation. Title 4, Agent Address: Day 8000, Munich, Nymphenburger Strasse, 37 Beha Supieritzsche Berg. Column for representative of patent applicant in Application No. 18

Claims (14)

[Claims] (1) Comes with a first roller to guide and pinch the first tape that comes out until the end, a second roller to guide and pinch the second tape at the beginning, and a knife carrier with a knife. In an apparatus for splicing tapes, especially paper tapes for manufacturing corrugated paper, the beginning of the second tape is connected to the first tape, and the first tape is cut with a knife. A tape splicing device characterized in that a pinching device is attached to a first roller for sandwiching one tape, and a knife is provided for cutting into the wedge shape of both rollers that press each other. 2. The apparatus according to claim 1, wherein the first and second rollers are arranged in upper and lower working positions. 3. Device according to claim 1, characterized in that there are two second rollers, which are movable alternately into the working position. (4) There is a knife carrier in the working position outside the second roller, which can press the second roller in order to pinch the beginning of the second tape. Or the device described in (3). 5. Device according to claim 4, characterized in that the knife carriers are arranged alternately on one of the second rollers for the second tape starting. (6) Two first rollers arranged at a distance from each other are present for the first tape to come out until the end, one of these rollers being connected to another roller present in the working position. Claim (1) characterized in that pressure can be applied to the
The device described. (7) The device according to claim 6, wherein the first roller is arranged on a seesaw base, and the seesaw base is pivotable about a fixed central axis. (8) The apparatus according to claim (7), wherein the first rollers on the seesaw table can alternately press each other. (9) The device according to claim 1, characterized in that the second roller is provided with an adhesive lining and/or a suction nozzle. (10) The device according to claim 1, characterized in that the clamping device has a pressure girder which can pressurize the upper surface of the knife carrier. (11) Claim (1), (6) or (10) characterized in that a pressure garter is attached to each of the first rollers.
) device described. (12) The device according to claim 10 or 11, characterized in that each of the pressure girders is provided with a friction lining. (13) The knife carrier is movable on a guideway under either of the second rollers, and the guideway leads from the discharge position to a working position for receiving and pinching the second tape, and further to the discharge position. The device according to claim 1, characterized in that: (14) The device according to claim 13, wherein the end portion of the guideway with the second roller and the knife carrier can be pivoted up and down by an operating device.