JPH0122044B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention is applicable to a coil material to be processed, such as a rolled metal foil, wound on an unwinding reel of an unwinding machine, such as a foil rolling machine, a gang slitter, or a separator. The present invention relates to a stop control method at the end of processing of a processing machine that performs various processing such as rolling and cutting on the coil material while returning the material.

Conventional technology and its problems For example, when the operation of a foil rolling mill is stopped at the end of processing, the rolled metal foil wound around the unwinding reel of the unwinding machine must be left slightly unwound on the reel. desirable. This is because if the coil material is completely unwound from the reel during operation of the rolling mill, the end portion of the coil material will be in a state where no tension is applied and wrinkles will occur in this portion, which will continue to be rolled. This is because not only does this cause deterioration in quality such as uneven gloss, but also the end portion of the metal foil wound around the take-up reel becomes free and rotates, creating a dangerous situation. On the other hand, if the amount of unwinding is increased, the coil material will be wasted, leading to a decrease in manufacturing efficiency.

By the way, this type of machine takes a certain amount of time (hereinafter referred to as
This is called the time required to decelerate and stop. ).
Therefore, it is necessary to issue a stop command in a timely manner, taking into consideration the length of the coil material to be rewound from the reel within that time.

Conventionally, when stopping this type of machine, an operator visually determines the amount of unwinding of the coil material to be processed wound around the unwinding reel of the unwinding machine, and when the machine is in a stopped state, the coil material remains on the unwinding reel. This was done by checking the timing when a slight amount of winding remained and then pressing the stop switch.

For this reason, the timing is often too early or too late, causing the above-mentioned inconvenience.

For this reason, the following method has been proposed in place of the stop control method described above.

That is, as shown in FIG. 3, the rotation speed N of the unwinding reel 1 is appropriately measured using, for example, a pulse transmitter, and the speed V of the rolled foil A is calculated from the rotation speed of the guide roll 2. From the above rotation speed N and speed V, calculate the coil outer diameter D at that point, D=
Calculated using the formula V/πN. Then, the outer diameter D, the known reel outer diameter D ₀ and the rolled foil A
From the thickness h of the coil material, the remaining length l of the coil material is
It is calculated using the formula =π/4h(D ² −D ₀ ² ).

On the other hand, from the deceleration and stop time T _M , the maximum speed V _M of the rolled foil A, and the speed V of the rolled foil A, the length L of the coil material to be rewound during the deceleration and stop time
is calculated using the formula L=T _M V ² /2V _M.

Then, the above l and L are constantly compared, and the necessary minimum length α of the coil material B that should remain unwound on the unwinding reel of the unwinding machine at the time of stopping is estimated, and when l = L + α, a stop command is automatically issued. It is to emit.

However, since the speed V of the rolled foil A used in the above calculation itself has an error due to the slippage that occurs between the foil A and the roll 2, the timing to issue the stop command determined based on this is not appropriate. However, there was a problem in that the desired unwinding accuracy could not be obtained.

This invention was made in view of the above-mentioned problems, and when the required minimum coil material A to be processed is left unwound on the unwinding reel 1 of the unwinding machine at the end of processing, the foil rolling machine etc. It is an object of the present invention to provide a control method that can automatically or manually stop a processing machine with substantially no error.

Means for Solving the Problems Accordingly, the present invention has been developed by preparing the rewinding reel 1 of the rewinding machine in advance.
Processed coil material A such as rolled metal foil wrapped around
In addition to measuring the initial number of turns N ₁ of The number of turns of the reel 1 is converted into N ₂ when directly wound on the reel 1, and the rotation speed of the reel 1 detected by the reel rotation speed detection means 8 at the same time as processing of the coil material A to be processed is started by the processing machine. By sequentially subtracting N ₄ from the initial number of turns N ₁ , the remaining number of turns N ₃ of the coil material A to be processed on the reel 1 is detected, and the remaining number of turns N ₃ and the number of turns on the reel 1 when the processing machine is stopped are detected. The minimum number of turns that should be left unwound N is the number of turns converted into ₅ .
Foil rolling characterized in that the total number of turns N ₂ +N ₅ obtained by adding N ₂ is compared, and a stop command is issued automatically or manually when both the numbers of turns N ₃ and N ₂ +N ₅ match. This article summarizes the stop control method for machines, etc. at the end of machining.

Embodiment This invention will be specifically described based on an embodiment shown in FIGS. 1 and 2.

As shown in FIG. 1, the rolled metal foil A wound around the unwinding reel 1 is guided between a pair of upper and lower working rolls 3 through an entry guide roll 2 and rolled. The metal foil B is wound around a take-up reel 4.

The reels 1 and 4 are both connected to one end of the shaft of a motor 6 via a reduction gear 5, as shown in FIG. A rotary encoder (reel rotation speed detection means) 8 is connected to the other end of the shaft of the motor 6 via a coupling 7.
The output terminal of the encoder 8 is connected to a reversible counter 9, and the counter 9 measures the number of rotations _N4 of the reels 1 and 4. The display section 9a of the counter 9 is set to display a numerical value subtracted (or added) by 1 from the initial setting value each time the reels 1 and 4 rotate once.

Then, the rolled metal foil A is wound around the unwinding reel 1. During this winding, the number of turns (initial number of turns) is determined in advance.
Measure N ₁ in advance.

On the other hand, the actual measured length l of the rolled foil A to be rewound from the unwinding reel 1 during the deceleration and stop time from when the rolling mill receives a stop command until the working rolls 3, 3 completely stop is calculated by each rolling. Measure each speed. Then, the measured length l is converted into the number of turns N ₂ when directly wound on the unwinding reel 1, and the relative relationship between the converted number of turns N ₂ and the rolling speed is determined.

The above-mentioned actual measurement length l is converted to the number of turns N ₂ using the conversion formula N ₂ =l/πD, where D is the spool outer diameter of the rewinding reel 1. The reason for using such a conversion formula is as follows. That is, the present invention provides the rewinding reel 1 with the minimum number of foil coils (number of turns).
This relates to a control method for stopping the rolled foil ( _N5 ) with unrolled foil, etc., and the rolled foil A etc. unwound from the unwinding reel 1 from the time when the foil rolling mill etc. receives a stop command until it completely stops is , above foil coil (number of turns
To be more precise _, the measured length l should be converted to the number of turns when wound on the foil coil ( _N5 turns). However, since the above number of turns N ₅ is usually set to several turns, and the thickness of rolled foil A is thin, the conversion when wound on the above foil coil (N ₅ turns) is Even if the number of turns is regarded as the converted number of turns N ₂ when winding directly on the rewind reel 1, it can be considered that there is almost no error, and the object of the present invention can be sufficiently achieved. Therefore, in the present invention, the actual measured length l is converted to the number of turns N ₂ when the winding is directly wound on the rewind reel 1, that is, by the conversion formula described above.

After making the above preparations, start the rolling mill.
Then, at the same time as the rewinding reel 1 starts, the initial number of turns _N1 of the rewind reel 1 is sequentially subtracted according to the rotational speed _N4 of the reel 1, and the value _N1 - _N4 is displayed on the display section 9a of the counter. On the other hand, the rolled foil B is wound onto the take-up reel 4, and the number of turns is displayed on the display section 9a of the counter on the winding side.

Then, the value displayed on the display section 9a on the unwinding side, that is, the number of remaining turns N ₃ is the converted number of turns N ₂ and the preset minimum number of turns to be left on the unwinding reel 1 when the rolling mill or the like is stopped. When the total number of turns with the number of turns N ₅ matches the total number of turns N ₂ +N ₅ , press the stop switch to stop.

As a result, the number of remaining turns on the rewinding reel 1 at the time of stopping becomes the desired minimum number of remaining turns _N5 .

In addition, when rolling is to be repeated further, the number of turns displayed on the display section 9a of the counter 9 on the winding side is inputted into the counter 9 on the unwinding side, and the same operation as described above is repeated thereafter.

The above is a semi-automatic stop control method, but
A completely automatic method may also be used in which a stop command is automatically issued.

Effects of the Invention As described above, the timing of issuing a stop command in a foil rolling mill or the like is determined by the number of turns of the coil material A to be processed, such as rolled metal foil, wound around the unwinding reel 1 of the unwinding machine. The number of turns can be measured extremely accurately.
Regardless of the method in which the stop command is issued automatically or manually, the reel 1 can be reliably stopped with almost no error in leaving the required minimum amount of coil material A set in advance on the reel 1. I can do it. Therefore, it is possible to avoid waste of coil material due to issuing a stop command too early, thereby improving manufacturing efficiency, and conversely, it is possible to avoid the occurrence of defective products or dangerous situations due to issuing a stop command too late. can be avoided.

[Brief explanation of drawings]

FIG. 1 is an explanatory diagram showing an example of a device for carrying out the present invention, FIG. 2 is an explanatory diagram showing an example of a rewinding machine and a reel rotation speed detecting means used in the present invention, and FIG. FIG. 2 is an explanatory diagram of a conventional automatic stop control method. 1... Rewinding reel, 8... Reel rotation speed detection means (rotary encoder), A... Coil material to be processed (rolled metal foil).

Claims (1)

[Claims] 1 The initial number of turns N ₁ of the coil material A to be processed, such as a rolled metal foil, to be wound on the unwinding reel 1 of the unwinding machine is measured in advance, and various processing machines such as a foil rolling machine receive a stop command. The number of turns when the actual measured length l of the coil material A to be processed that is unwound from the reel 1 from the time it is received until it completely stops is wound directly onto the reel 1.
N ₂ in advance, and at the same time as the processing machine starts processing the coil material A to be processed, the rotation speed N ₄ of the reel 1 detected by the reel rotation speed detection means 8 is sequentially subtracted from the initial number of turns N ₁ . By this, the remaining number of turns N ₃ of the coil material A to be processed on the reel 1 is detected, and the remaining number of turns N ₃ and the necessary minimum number of turns N ₅ that should remain wound on the reel 1 when the processing machine is stopped are detected. and the total number of turns N ₂ +N ₅ obtained by adding the converted number of turns N ₂ to the total number of turns N 2 +N 5, and when both numbers of turns N ₃ and N ₂ +N ₅ match, a stop command is issued automatically or manually. A stop control method at the end of processing in a foil rolling mill, etc.