JPS6348787B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a sheet winding start device.

Conventionally, when starting sheet winding,
In some cases, the tip of the sheet to be wound is glued to the core, and in other cases, the sheet is not glued and is wound around the core several times by hand or with a guide belt to generate frictional force.
After that, the actual winding may begin.

In most cases, the tip of the sheet is glued to the core and wound, but if the product to be wound is recording paper for registers, telex, computer terminals, etc., the end of the rewound sheet can be wound freely. You cannot use a glued one because it needs to be separated from the core.

For this reason, as mentioned above, the tip of the sheet is wound around the core several times without gluing it, but if the core is thin like the recording paper above, it must be wrapped manually before winding. It takes a lot of effort to put it in the required position on the removal machine.

Therefore, when the sheet is engaged with the winding core to start winding, the present invention provides a method for forming a subsequent winding between the sheet fragment made from the sheet to be wound and having its leading end adhered to the winding core and the winding core. It clips the leading edge of the sheet to be removed and rolls it together.

Since the leading edge of the sheet to be wound up is restrained by the rear part of the bonded sheet fragment, there is no need to wrap the entire circumference of the core with a guide belt unlike in the conventional case where the leading edge is free.

Next, the configuration and embodiments of the present invention will be described with reference to the drawings.

FIG. 1 shows an embodiment in which the present invention is applied to the winding start of a surface-driven winding device, in which a winding core C fitted on a winding shaft is placed on receiving rollers 1 and 1a that can be driven to rotate. is suppressed by roller 2. On the right side is a completed sheet roll R that has rolled off from above the receiving rollers 1 and 1a, and the trailing end of the sheet S to be wound up is still connected to the feed roller 3 and stopped. Therefore, a traveling cutter (perforation cutting blade) 4 is run as a first cutting mechanism to cut the sheet S along perforations. In addition, a gluing machine 5 installed immediately upstream of the cutting position is also run to apply gluing to the cut end of the sheet on the upstream side.

Now, after cutting the sheet to be wound along the perforations and applying the prescribed glue, turn the stationary feed roller 3 and receiving rollers 1 and 1a a little to align the gluing position A with the winding core and receiving roller 1 or 1a. (In this example, 1
Park at the point of contact with a). This means that the tip of the sheet on the upstream side of the perforation cutting line is adhered to the surface of the core C. Then, as shown in Figure 2, by slightly rotating the completed sheet roll R, the sheet is torn off at the perforation cutting line, and separated into the sheet that connects to the tail of the completed sheet roll R and the sheet that is wound onto the core. do.

Next, as shown in FIG. 2, the traveling cutter 4 is now run as a second cutting mechanism to cross-cut and separate the sheet to be wound up. As a result, the short sheet fragment So created from the sheet to be wound comes into a state in which its leading end is adhered to the surface of the winding core C.

Thereafter, as shown by the chain line in FIG. 2 and the solid line in FIG. The cut end of the upstream sheet cut second time is guided so as to overlap the rear part of the sheet fragment So. However, as shown by the chain line in FIG. 3, the leading end of the rear sheet S on the guide plate 6 may be fed by the auxiliary feed roller 3a so as to be inserted between the target sheet fragment So and the winding core C. .

Insertion length of rear seat S, i.e. seat fragment
The longer the overlap length with So, the better, and it should be at least larger than the contact spacing of each roller 1, 1a, 2 surrounding the winding core C. If this does not happen, cut the sheet fragments so that the tip of the rear sheet S does not move away from the winding core C.
Suppress the top with airflow or other means.

As shown in an enlarged view in FIG. 4, the winding core C has three contact points x, y,
It is supported by z. If the overlapping length of the sheet fragment So and the rear seat S is shorter than the contact interval, for example, between the contact points y and z, the supporting force of the rear end of the sheet fragment So and the tip of the rear sheet S will be removed at the same time, and the static If there is no electro-adsorption effect, immediately remove the rear seat S.
The tip part separates from the winding core C and ends up drooping. On the other hand, if the overlapping length of both sheets is longer than the contact interval, the trailing end of the sheet fragment So or the leading end of the rear sheet S will always be pressed against the winding core surface by the rollers, so the trailing end of the sheet fragment So will be temporarily released. However, there is no problem with winding.

However, since the position where the tip of the rear sheet S is at risk of separating from the winding core C due to insufficient overlap length is known in advance, the upper sheet fragment is placed at that position.
There is no problem if you install airflow or small rollers to suppress the rear seat S via So. In this case, the rear seat S is inserted through the overlying seat fragment So.
This is easy because it suppresses the amount of noise, otherwise the conventional guide belt system would be the only option.

If the feed roller 3 and the receiving rollers 1 and 1a are driven from the state shown in FIGS. 3 and 4, and the core is surface-driven, the rear sheet S, together with the sheet fragments So, will be wound onto the core C.

In the case of the above embodiment, the gap between the winding core C and the sheet fragment So opens upward, but if the gap opens downward, it is slightly difficult to insert the tip of the rear sheet S. It becomes troublesome. Of course, this is possible by manipulating the edge of the sheet using suction means, but
The embodiments shown in FIGS. 5 to 8 are examples carried out without adsorption.

In FIG. 5, 1 and 1a are receiving rollers similar to those in FIG.
It is pressed with a. The completed sheet roll R is transferred to the right side, the trailing part of the sheet is cut along perforations, and the state is shown in which the sheet is glued. FIG. 6 shows a state where the gluing section A has advanced to the point where it comes into contact with the receiving roller 1a, and the trailing end of the sheet roll R has been torn off at the perforation cut section. Note that the traveling cutter 4 is about to cut the sheet S again as the second cutting mechanism, and the guide plate 6a is raised from the lower standby position beside it to receive the cut end on the upstream side. Further, in order to receive the cut end on the downstream side, the temporary receiving roller 7 has been raised from the lower standby position.

When the traveling cutter 4 is run in the condition shown in Figure 6,
The cut end of the sheet fragment on the downstream side of the cutting position is placed on the temporary receiving roller 7, and the cut end of the sheet fragment on the upstream side is placed on the guide plate 6a. Then, when the rear sheet S on the upstream side is slightly advanced by a well-known feeding mechanism (not shown), its leading end enters the opening 7a of the temporary receiving roller 7, as shown in FIG. Then, when the temporary receiving roller 7 is slightly rotated as shown in FIG. 8, the leading end of the rear sheet S that has entered the opening 7a comes out and is guided to the core C.

In this state, advance the rear seat S and receive rollers 1 and 1.
By turning a, the tip of the sheet S that has hit the core C advances to the circumferential gap between the sheet fragment So and the core C as the core C rotates, and is wound up so that they overlap. The temporary receiving rollers 7 rotate synchronously at that position until the rear sheet S is appropriately wound around the core C, and then descend to the standby position together with the guide plate 6a.

When the winding preparation is completed in this way, the winding core C is wound and rotated at that position in the main manner, but as in the method recently developed by the present inventor, the winding core C is moved above the receiving rollers 1 and 1a. You may then move on to main winding.

Although the above-described embodiments are all related to a surface-driven winder, the present invention can also be applied to the start of winding on a shaft-driven winder. That is, in addition to the touch roller in contact with the winding core C, if two temporary rollers are brought close to the winding core C to surround it, the same conditions as in the above two embodiments will be achieved.
Preparations for starting winding can be made in a similar process.

Although a few examples have been described above, the sheet fragments can be attached to the winding core by either gluing or adhesive tape, and the sheet tip can be inserted by suction operation or by mechanically clamping it into the desired position. It can be widely varied and applied using the well-known techniques of mechanical engineers.

This invention provides a sheet fragment created from the sheet to be wound, with its leading end adhered to the winding core, as a means of generating frictional force that allows the sheet to be wound without adhering the leading edge of the sheet to the winding core at the start of sheet winding. A method was developed in which the leading edge of the subsequent sheet to be wound was inserted between the winding core and the winding core. No matter where you press the sheet fragments stacked on top of the sheet tip, it will have the effect of keeping the sheet tip from separating from the core, so just by pressing it against the core in several fixed positions, you can create a sheet without adhesive. This made it possible to wrap the leading edge of the sheet around the core.

Moreover, adhesive is applied to the sheet to be rolled up,
Since sheet fragments are created by adhering this to the winding core and then performing a predetermined separation operation, adhesion of the sheet fragments to the winding core can be ensured.

Furthermore, since the sheet fragments are created and bonded to the winding core during a series of operating steps, there is no need to separately provide a dedicated machine or the like for individually creating sheet fragments.

[Brief explanation of the drawing]

Figures 1 to 3 are explanatory diagrams of each process of an embodiment of this invention, Figure 4 is an enlarged explanatory diagram of the main parts of Figure 3, and Figures 5 to 8.
The figures are explanatory diagrams of each process of another embodiment. S... Sheet, So... Sheet fragment, C... Winding core, A... Adhesive (glued) part, R... Sheet roll, 1, 1a... Receiving roller, 2, 2a... Holding roller, 3 ...Feed roller, 4...Traveling cutter (first and second cutting mechanism), 5...Gluing machine, 6, 6a
... Information board, 7 ... Temporary receiving roller.

Claims (1)

[Claims] 1. A first cutting mechanism capable of cutting the sheet to be wound up leading to the sheet roll along perforations, provided on the sheet travel path, and a first cutting mechanism installed on the sheet to be wound up immediately upstream of the perforation cutting position of the first cutting mechanism. a gluing mechanism for applying an adhesive; an adhesion means for adhering the adhesive-applied portion of the sheet to be wound up to which the adhesive has been applied by the gluing mechanism to the surface of a rotationally driveable winding core; a second cutting mechanism for transversely cutting the sheet to be wound, which is adhered to the core by a means, slightly upstream of the adhesive part; A feeding mechanism that feeds the sheet to be wound onto the core, and a guide mechanism that guides the leading end of the upstream sheet to be wound between the sheet downstream of the cutting position by the second cutting mechanism and the surface of the core. A sheet winding start device comprising: