JPS5914456Y2 - Rider roll for winding machine - Google Patents

Description

[Detailed description of the invention] An example of a conventional film winding machine will be explained with reference to Figs. 1 to 4. Fig. 1 shows an arm C having winding cores a and l) at both ends that can be rotated to a stand d. At the same time, an arm f with a rider roll e attached to the tip is configured to be rotatable around a fulcrum j by a cylinder g, and when winding the fed film h onto the winding core a, This figure shows a winding machine that winds up the film by pressing it with a rider roll e.

Rider roll e is installed to prevent air from being entrained in the film layer, and a uniform nip is required over the entire length. problems will arise).

Also, when the film h is nipped by the rider roll e, an external force F1 is applied in the direction of gravity at both ends of the rider roll e.
When the rider roll is nipped from right side of the winding core by applying own weight + external force F1 or only external force F1, both sides curve downward as shown in Fig. 2, and both end shafts of the rider roll e An external force F is applied in the opposite direction of gravity at
2 and nip with own weight - external force F2, roll e
bends under its own weight, and both sides curve upward as shown in Figure 3, making it impossible to obtain a uniform nip.

For this reason, conventionally, in pressing, the roll deflection due to force was calculated, the diameter of the center part of the roll was changed by an amount that matched the amount of deflection, and the roll was polished to a medium height or medium height (to give a crown) to correct the roll deflection. method was used.

Figure 4 shows a rider roll e' with a medium-high crown as one method for correcting deflection, but in the method using this roll, if the pressing force changes, a uniform nip cannot be achieved unless the crown is ground again. There was a drawback that I couldn't get it.

Rider rolls change the pressing force in order to adjust the winding hardness of the film, and if the work is different due to changes in film thickness, etc., the pressing force must be changed. Therefore, with conventional crown rolls, these could not easily adapt to changes.

The present invention was proposed to solve the above-mentioned conventional drawbacks, and consists of a beam supported on both sides of the rider roll by an external force applying means attached to the machine frame, and a bolt attached to both outer ends of the beam. A roll bending mechanism is employed, which includes a first bearing that is vertically movably suspended from the beam via the bearing, and a second bearing that is located inside the same bearing and is vertically installed on the beam. The aim is to adapt the rider roll of the winder to adapt to changes in force and always obtain a uniform nip.

An embodiment of the present invention will be described below with reference to the drawings. Fig. 5 shows a two-shaft turret type center winder showing an embodiment of the present invention, in which an arm 3 having winding cores 1 and 2 at both ends is rotatably attached to a stand 4. I support it.

5 is a rider roll, 6 is an arm, 7 is an air cylinder, and the film 8 is pressed by the rider roll 5 to the winding core 1.
It is wound up.

The rider roll 5 is rotatably attached to the arm 6 by a cylinder 7 about a fulcrum 15 via a roll bending mechanism that forcibly bends the rider roll 5.

Next, the roll bending mechanism will be explained with reference to FIG. 6. 9 is a beam, 10 is a bolt, 11 is a pulling nut, 12 is a pushing nut), 13 and 14 are bearings. Turn the nut 11 for rotation in the direction of arrow X, loosen the nut 11 for pulling, and turn the nut 12 for pushing.
When turned, the rider roll 5 is supported by a bearing 13 movable by a helical action and a bearing 14 fixed to the beam 9, and a force is applied to the bearing 13 in the direction of the arrow X or Y. The rider roll 5 is forcibly bent.

Note that the bolt 10 and the bearing 13 are integrally constructed.

Next, the action will be explained.

First, to explain the case of nipping due to the rider roll 5's own weight + external force or only external force, if the bearing 13 is pulled in the direction of arrow X in Fig. 6, the rider roll 5 will deflect as shown by the dotted line in Fig. 8. Deflects by f2.

Further, when the rider roll 5 without a roll bending mechanism is pressed against the film, a deflection of a deflection amount f1 occurs as shown by the dotted line in FIG.

If the amount of deflection f1 due to pressing and the amount of deflection f2 due to the roll bending mechanism are made equal and the rider roll 5 is pressed against the film 8, the deflection of the rider roll 5 will be as shown by the dotted line in Fig. 9, which is considerably compensated and almost A uniform nip is obtained.

Next, the case of nipping due to the own weight of the rider roll 5 and external force will be described. The rider roll 5 without a roll bending mechanism is deflected due to its own weight as shown by the dotted line in FIG. 10, and the amount of deflection is f3.

In Fig. 6, the bearing 13 is pushed in the direction of the arrow Y, and the rider roll 5 is deflected f equal to the amount of deflection due to the roll's own weight.
If you only roll 3, you can get rider roll 5.
The deflection is as shown by the dotted line in FIG. 11, and is considerably corrected, making it possible to obtain a substantially uniform nip.

Next, FIG. 12 shows another embodiment, in which the structure in which the rider roll is attached to the rotatable arm of FIG. 5 is replaced with a take-up type that can move up and down.

That is, a roll bending mechanism for the rider roll 5 shown in FIG. 6 is attached to a take-up 19 that is guided by guides 16 and 17 and can be moved up and down by a cylinder 18, but the operation and effect are different from that shown in FIG. 6. There is no difference in

Note that a screw, a hydraulic cylinder, a hydraulic cylinder, or the like may be employed as the means for applying the external force, and the rider roll may be free or may be driven by a belt or the like.

As explained in detail above, the present invention has a beam supported by an external force applying means attached to the machine frame, and a bolt at both outer ends of the beam that allows both sides of the rider roll to be moved up and down relative to the beam. Since the roll is supported via a roll bending mechanism consisting of a first bearing that is suspended, and a second bearing that is located inside the same bearing and is suspended from the beam, the weight or pressure of the roll is reduced. If the roll bending mechanism applies a deflection amount equal to the deflection amount due to the force, the deflection of the rider roll is considerably corrected, and winding can be performed with a substantially uniform nip.

Therefore, in the present invention, even if the sheet thickness changes, there is no need to replace the rider roll, and the amount of deflection of the roll can be corrected by the roll penting mechanism with a simple operation. Rolls can be obtained efficiently.

The present invention is highly practical when applied to a wide film winding machine.

[Brief explanation of the drawing]

Figure 1 is a front view showing an example of a conventional film winder, Figures 2 and 3 are explanatory diagrams showing roll deflection in response to external forces applied to both sides of the rider roll, and Figure 4 is a front view of an example of a conventional film winder. A side view showing an example of a rider roll with a crown, FIG. 5 a front view of a winding machine showing an embodiment of the present invention, and FIG. 6 a partially sectional side view showing the roll painting mechanism of FIG. Figures 7, 8, 9, 10, and 11 are explanatory diagrams showing the rider roll's own weight or pressing force, and the deflection state due to external force, respectively, and Figure 12 is the same as Figure 5. It is a front view of the winding machine which shows an Example different from FIG. Explanation of the main parts of the diagram 1, 2... Core, 5...
... Rider roll, 8 ... Film (sheet-like material), 9 ... Beam, 10 ...
pol), 10, 11.12... Bolt, nut (external force applying means), 13... First bearing, 14
...Second bearing, 10...Bolt (roll bending mechanism), 11.12...Nut (roll bending mechanism), 13° 14...
・Bearing (roll bending mechanism).

Claims (1)

[Scope of utility model registration request] In a winding machine that winds a sheet material by pressing a rider roll against a winding core, both sides of the rider roll are connected to a beam supported by an external force applying means attached to the machine frame, and to both sides of the beam. A roll penting mechanism consisting of a first bearing suspended from the beam via a bolt at an end so as to be movable up and down, and a second bearing located inside the same bearing and not vertically disposed on the beam. A rider roll for a winding machine, characterized in that it is supported through.