JPH055741B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention is capable of attaching a web to a new cylindrical core for winding the web, or cutting a finished roll released from a roller arrangement section from a new attachment point of the next web. A type for winding a web of paper or board material onto a cylindrical core, which is equipped with a mounting/cutting device whose both ends are attached to lever arms so as to be swung from above the roller arrangement part into the arrangement part. This invention relates to a double roller winding machine.

This type of winding machine is a German application published patent specification number 31 51 256.9 (corresponding to Japanese Patent Application Laid-Open No. 113060/1983)
This is a known method.

The structural unit with the mounting and cutting device used in this machine has means for pushing out the finished roll and means for attaching and cutting the tail of the paper web to the cylindrical core. The mounting/cutting device is mounted slidably along a guide and is supported on a lever arm so as to be pivotable transversely to the axis of the support roller. When the finished roll is extruded,
The guide is rotated to the center plane of the winding machine above the support roller. Depending on the diameter of the cylindrical core being wound up, the mounting and cutting device moves from its initial upper position downwardly along the guide into the roller arrangement. After the device is installed on top of the cylindrical core around which the web of material is wound, the web is secured to the cylindrical core and the web of the finished roll is then cut from the starting point where the web is loaded. do. In this known machine, the mounting and cutting device always acts on the top of the cylindrical core, regardless of the size of the cylindrical core used.
Structurally, this guide becomes too large, or the motor drives the device too strongly when passing through the guide.

It is an object of the present invention to simplify the structure of a mounting and cutting device for a dual support roller winding machine, and to easily perform mounting and cutting on the top of the cylindrical core even if the diameters of the cylindrical cores are different. The key is to design the device to

According to the present invention, the above-described machine is a dual support roller winding machine for winding a product web onto cylindrical cores having different diameters, and the machine winds the web around a new winding cylindrical core. A mounting cutting device is fixed to the take-up cylindrical core and is pivoted on both sides by lever arms so as to be able to pivot freely into the roller arrangement part from above and cut the finished web released from the roller arrangement part from the fixed web start end. However, in a type in which the point of action of the mounting/cutting device on the winding cylindrical core is at least approximately aligned with the apex of the winding cylindrical core having different diameters installed in the roller arrangement part, both lever arms are It is a single arm lever arm,
The pivot axis is fixed in position, and the pivot axis of the lever arm for the setting and cutting device extends at a distance parallel to the axis of rotation of the support rollers and in a common axial plane of the support rollers. It is characterized by being located approximately at the center between the vertices of the large diameter and small diameter winding cylindrical cores in a plane extending in parallel.

According to the present invention, it is possible to suitably select the position of the pivot axis of the lever arm and the length of the lever arm, and to place the mounting/cutting device on the top of the cylindrical core with sufficient accuracy.

Furthermore, the winding machine of the present invention is characterized in that the pivot axis of the lever arm for the loading/cutting device is juxtaposed to a support roller that is revolved around the web. This configuration allows the mounting and cutting device to be reliably engaged on the top when using only two differently sized cylindrical cores.

In this case, which is actually rare, if there are two or more cylindrical cores with different dimensions, the lever arm can be moved so that its effective length is equal to the distance between the axes of the support rollers.
The length may be set to be relatively long, such as in the range of 0.5 to 3 times, so that engagement with the vicinity of the top of the cylindrical core of the device can be performed at a desired position.

Embodiments of the invention will be described in more detail below with reference to FIGS. 1-2.

This winding machine 1 is schematically shown in a front view in Figure 1.
is the interval between the respective rotating shafts 4 and 5 as a,
2 contained within the frame (not shown) of this machine.
It has two rotationally driven support rollers 2 and 3.
A roller placement portion 6 in which the cylindrical core 7 is accommodated is formed between the support rollers 2 and 3 above a common plane passing through their respective rotation axes. When the support rollers 2 and 3 rotate, a web 8 made of, for example, a plate material, which is rotating on one of the support rollers 2, is wound onto the cylindrical core 7.

A cylindrical core insertion device 9 is provided to insert the next cylindrical core 7' at the start of the winding process. This device includes an insertion recess provided on a swing lever 11 that is substantially coaxial with the rotating shaft 5 of the support roller 3 on the side on which the web does not revolve. Cylindrical cores of different diameters are accommodated in the roller arrangement part 6 by means of this device 9. The large-diameter cylindrical core 7 is mainly used for winding up plates that are difficult to bend, and the small-diameter cylindrical core 12 is used for web materials that weigh less per unit area.

However, in order to install a new cylindrical core in the roller arrangement part 6, the finished roll 13 must be released from this roller arrangement part. Therefore, this winding device 1 is provided with a discharge device 14 that can rotate around the rotation shaft 4 of the support roller 2 around which the web is wound. The roll 13 that has been wound by this device 14 is pushed over the support roller 3 on which the web is not wound and onto the transfer table 15 that has been moved toward this roller. When the finished roll 13 has been moved from the support roller 3 onto the transfer table 15, this table swings to the central position as shown in the figure. In this state, the cylindrical core insertion device 9 can place the next cylindrical cores 7, 7' in the roller placement section 6. During the discharge of the finished roll 13, the web 8 of material emerging along the rear thereof is thereby wound over a large part of the circumference of the cylindrical core.

The winding machine 1 is also provided with a mounting/cutting device 16 which swings from a rest position shown in broken lines to an operating position shown in solid lines once a new cylindrical core 7 has been inserted. This device 16, whose plan view is shown in FIG. 2, comprises a torsion-resistant beam 17 connected at both ends to a lever arm 18. When the mounting/cutting device 16 is in its operating position, it engages with the top of the cylindrical core 7 arranged in the roller arrangement 6 . A plurality of spaced apart attachment mechanisms 19 are provided along the spars 17 for attaching the web 8 to the new cylindrical core 7. These mechanisms allow the needle or claw to penetrate the web 8 and drive into the cylindrical core 7. This spar 17 has a drive or servo motor 20 . The motor has a cutting blade 2.
1 is installed. Since the motor 20 can move parallel to the spar 17 (or along the axis of the spar), all blades 21 will move as well. With this movement, the rolled roll 13 is moved to a new cylindrical core 7.
At the top, it is cut from the next web.

Thereafter, the feed table 15 is lowered, the end-of-winding roll 13 is carried out from the winding device 1, and the mounting/cutting device 16 returns to the rest position.

A cutting device 16 is installed near the top of the small diameter cylindrical core 12' housed in the innermost part of the roller arrangement section 6.
The rotation axis 22 of the lever arm 18, which extends parallel to the respective rotation axes of the support rollers 2 and 3, is connected to the support roller 2 around which the web is wound.
Place it at a distance in front of the The effective length r of this lever arm 18 is designed to be approximately 0.5 to 3 times (preferably twice) the distance a between the axes of the support rollers 2 and 3. Furthermore, lever arm 1
The rotation axis 22 of 8 is on a plane extending parallel to the plane where the axes of the support rollers 2 and 3 are commonly located, and this is on the line connecting the tops of the large and small diameter cylindrical cores 7 and 12. passing through the middle. In such an arrangement, the engagement point of the mounting/cutting device 16 substantially coincides with the top of each of the cylindrical cores of different sizes inserted into the roller arrangement portion 6 . The locus 23 of the engagement point drawn by the attachment/cutting device 16 at the arrangement portion 6 is clearly shown by the broken line in the figure.

[Brief explanation of the drawing]

FIG. 1 shows a schematic front view of the winding machine of the invention. FIG. 2 is a plan view of the mounting and cutting device. 1... Winding machine, 2, 3... Support roller, 4,
5...Rotating shaft, 6...Roller arrangement section, 7, 7'...
... Tubular core, 8 ... Web, 9 ... Tubular core insertion device, 10 ... Insertion recess, 11 ... Swing lever, 12, 12' ... Tubular core (small diameter), 13 ...
End roll, 14... Discharge device, 15... Feeding table, 16... Mounting/cutting device, 17... Girder,
18... Lever arm, 19... Mounting mechanism, 20
... Servo motor, 21 ... Blade, 22 ... Rotation axis, 23 ... Trajectory.

Claims (1)

[Scope of Claims] 1. A dual support roller winding machine 1 for winding a web 8 onto cylindrical cores 7, 12 having different diameters, the mounting being supported by a pair of lever arms 18, 18'. It has a cutting device 16 which pivots into the roller arrangement 6 from above, places the web 8 onto the new cylindrical core 7 on which it is to be wound, and removes the web 8 from the roller arrangement. In the roller winding machine 1 described above, which is capable of cutting the discharged roll 13 fully wound with the web from the starting end of the installed web, the pair of lever arms 18, 18' is a cantilever lever arm. , and the rotation shaft 2 of the lever arm 18, 18' of the above-mentioned mounting/cutting device 16
2 extend at a distance parallel to the axis of rotation 4, 5 of the support rollers 2, 3 and lie in a plane extending parallel to the common plane of the axes of the support rollers 2, 3; is located approximately in the middle of the tops of the cylindrical cores 7, 12 having different diameters, so that the point at which the mounting/cutting device 16 acts on the cylindrical cores 7, 12 is located at the roller arrangement portion 6. , a double support roller winding machine characterized in that the rollers are made to substantially coincide with the apexes of cylindrical cores 7 and 12 having different diameters. 2 Lever arm 18, 18' for mounting device 16
The rotation shaft 22 of the support roller 2 around which the web is wound
Winding machine according to claim 1, characterized in that it is located near the winding machine. 3 The effective length (r) of the lever arms 18, 18' is
The winding machine according to claim 1 or 2, characterized in that the distance between the axes (a) of the support rollers 2 and 3 is in a range of 0.5 to 3 times.