JPS6238993Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a reel winding control system that can be applied to paper machine reels, surf ace drive winding devices, and the like.

Fig. 1 is a perspective view showing the overall arrangement of a conventional reel, where 1 is a primary arm, 2 is a secondary arm, 3 is a reel drum (driven by a DC motor), 4 is an empty spool, 5 is a paper roll, 6 is a reel drum. is a rotary cam switch for detecting the position of the primary arm 1.

As for the reel winding operation, as shown in Fig. 2, 7
Set the empty spool 4 on the primary arm 1 at the upper limit position, move it to the touch position 8, and wind up the paper 5 on the spool. After winding a predetermined amount (lower winding) at this position, the primary arm 1 is lowered, the secondary arm 2 is pressurized at the position 9, and the winding is continued with the primary arm 1 open.

In this case, the positions 7, 8, and 9 of movement of the primary arm 1 are detected and controlled by the rotary cam switch 6, but the pressurization of the primary arm hook 10 cannot be controlled. Furthermore, the conventionally used rotary cam switch 6 is made up of a speed reducer and a limit switch, and has the disadvantage of poor setting operation and setting accuracy.

This invention uses a detector to replace the rotary cam switch, improves setting operation and setting accuracy, and detects the position of the primary arm from the touch position to the lowered position at points other than the three points 7, 8, and 9 shown in Figure 2. This was proposed with the aim of providing a control system that continuously detects the gap between the two and controls the pressure of the primary arm hook, thereby reducing the occurrence of paper breakage and wrinkles at the beginning of winding.

That is, the present invention allows for continuous setting using a rotation angle detector, as opposed to stepwise setting using a rotary cam switch, and provides easy setting accuracy and operability. An object of the present invention is to provide a reel winding control system that can convert an analog quantity into a digital signal and establish a pressurization control system corresponding to the movement of a primary arm.

An embodiment of the present invention will be described below with reference to the drawings.The equipment configuration is as shown in the overall reel layout diagram in FIG. It is replaced by . The other parts have the structure shown in FIG. 1 and are completely the same as the conventional one. Also primary arm 1
In order to correlate the position of the primary arm hook with the pressure applied to the primary arm hook 10, a pressure control system for the primary arm hook is constructed as shown in FIG.
Pressure reducing valve 1 with stepping motor for pressurization setting
Use 3.

Figures 3 and 4 show the primary arm position and nip pressure changes. In the case of the present invention, the process in which the take-up spool 4 moves from the upper limit to the lower limit can be continuously detected, and the primary arm hook corresponding to the spool position can be detected continuously. The amount of pressurization can be controlled. That is, the third
As shown in the diagram, in the conventional system configuration, the nip pressure between the reel drum and the take-up spool decreases as the primary arm position changes.

However, in the hook pressurization control system shown in Fig. 5, the primary arm position is continuously detected by the rotation angle detector 12, converted to position data by the signal converter 11, and the relationship characteristics with the nip pressure are determined. Based on this, the stepping motor for pressurizing the hook changes the pressure reducing valve 13 and operates the air cylinder for pressurizing the hook. Note that 14 is a solenoid valve, 15 is an air cylinder (operator) for pressurizing the primary arm hook, and 16 is an air cylinder (driver) for pressurizing the primary arm hook.

The curve in Fig. 3 (conventional) has a large amount of change in nip pressure depending on the spool position (A→B→C), and furthermore, at the spool position C, the secondary arm pressurizing operation temporarily wraps around the primary arm hook pressurizing operation. As a result, the nip pressure changes in a pulse-like manner, often causing wrinkles and paper breaks.

The present invention adopts the hook pressurization control system shown in Fig. 5, and by timing the secondary arm pressurization with respect to the hook pressurization control when the primary arm position is near point C, the curve shown in Fig. 3 ( The nip pressure control system related to reel winding can have continuity in the relationship between the primary arm position and the nip pressure, as shown by the curve (this invention) and the curve (this invention), and can also change its characteristics. It can be established as
Nip pressure control can be performed accurately and smoothly.

As described above, according to the present invention, since the position of the primary arm can be continuously changed, the upper limit touch position, lower limit position, etc. can be easily set. Note that if the present invention is combined with a tension control system, the reel winding hardness can be controlled.

[Brief explanation of the drawing]

Figure 1 is a perspective view showing the conventional reel arrangement;
The figure is an explanatory diagram showing the positional relationship between the reel drum and the take-up spool in Figure 1, Figure 3 is a diagram showing the relationship between the take-up diameter and the nip pressure in the conventional and present invention, and Figure 4 is the diagram shown in Figure 3. FIG. 5 is an explanatory diagram showing the positional relationship between the reel drum and the take-up spool, and FIG. 5 is an explanatory diagram showing the primary arm position and hook pressure control system in the embodiment of the present invention. Explanation of the main parts of the diagram: 1...Primary arm, 3...Reel drum, 4...Take-up spool, 11...Signal converter, 12...Rotation angle detector, 13...Stepping motor for hook pressure With pressure reducing valve.

Claims (1)

[Scope of utility model registration request] Set the empty spool on the primary arm,
In a system in which the reel winding operation is performed by moving the spool from a touch position with the reel drum to a lowering position, a rotation angle detector is provided to continuously detect the position of the primary arm between the touch position and the lowering position. A reel winding control system characterized by detecting.