JPS6354621B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an automatic wholesale change control method for a web winder that can be applied to a paper winder.

It is widely known in the industry that the process of removing the winding roll from a web winding machine (hereinafter referred to as a winder) used in paper mills, etc. is called wholesale replacement work. It is. Traditionally, this wholesale replacement work has been done manually; for example, wholesale replacement work on a winder with a finishing width of 8000 mm requires 4 to 5 operators, and the winder stoppage time for wholesale replacement is approximately 10 seconds. It is taking place.

The applicant has previously published Japanese Patent Application No. 51-119568 (Japanese Patent Publication No. 58-27185) regarding the automation of wholesale replacement work.
We developed a device that we applied for in 2007, and succeeded in saving labor in wholesale replacement work and significantly shortening winder downtime. As a result, wholesale replacement work can be carried out using a winder with a finishing width of 8,000 mm and one operator at all times, with the winder stopping for about 60 seconds.

However, as the performance of paper machines has improved, there has been a demand for shorter replacement work.
With a control method in which the operation of one device is started after the operation of the other device is completed, it is not possible to shorten the time.

The present invention was proposed in order to solve the above-mentioned conventional drawbacks, and in order to shorten the replacement time, devices that may interfere with each other in their operating ranges are operated simultaneously while detecting their respective operating positions. By shortening the operating time and detecting the occurrence of interference by the detection device, one device is temporarily stopped to avoid interference, increasing winding capacity and achieving high productivity. It is an object of the present invention to provide an automatic wholesale change control method for a web winding machine.

Embodiments of the present invention will be described below with reference to the drawings.

Now, an embodiment of the present invention relating to a web winding machine used in paper manufacturing companies to produce paper winding rolls will be explained with reference to FIGS. 1 to 5. Reference numerals 1 and 2 are winding drums; It is made of metal rolls and is driven by an electric motor. Note that 1 is a first winding drum, and 2 is a second winding drum. 3
is a web, which is wound around the core 4 on the winding drums 1 and 2, and when the winder is stopped after winding a predetermined length, it is taken out from the winder as a winding roll and sent to the next process. . Further, 5 is a take-up roll.

Reference numeral 6 denotes a rider roll, which is used for the purpose of pressurizing the take-up roll 5 in order to generate the necessary contact pressure between the take-up roll 5 and the take-up drums 1 and 2. Numeral 7 is a core chuck that can move up and down along a guide rail attached to the winder frame 8 in response to changes in the diameter of the winding roll. Movement of the take-up roll 5 in the width direction on the take-up drums 1 and 2 is restricted.

Reference numeral 9 denotes a roll ejector, which is provided for the purpose of pushing out the winding roll 5 from above the winding drums 1 and 2. The take-up roll 5 is pushed out by the roll ejector 9 swinging around the bearings at both ends of the first take-up drum 1 under the force generated by the hydraulic cylinder 10 or the like. The roll ejector 9 in FIG. 1 has the function of instantaneously cutting the entire width of the web 3 during extrusion of the take-up roll, and has a built-in suction function that removes the tip of the web 3 from the unwinder to the take-up drums 1 and 2. It has the function of being adsorbed and held in a box.

Reference numeral 11 denotes a cradle, which is kept in the position shown in Fig. 1 by a hydraulic cylinder 12 during web winding. When unloading the second take-up drum 2, by controlling the hydraulic pressure supplied to the hydraulic cylinder 12 as necessary, the second take-up drum 2 can be swung around the bearings at both ends and lowered. Also Cradle 1
1 also functions as a safety fence to protect the operator from the dangers of the winding drum, winding roll, rider roll, etc. which are rotating at high speed.

13 is a tape pasting device, and a guide rail 14 is fixed to the winder frame 8 on both the operating side and the driving side.
, and is suspended by an electric hoist 15 so that it can be moved up and down. Also, during the winding operation by the tape applying device 13, over the entire length of the core 16 used for the next winding roll,
Double-sided adhesive tape can be applied to form an adhesive surface.

17 is a core injector, both ends of which are connected to a wire rope 18 using rotatable joints. The other end of the wire rope 18 is a rope drum 19
As the rope drum 19 rotates, the core injector 17 is guided by a guide rail 20 supported from the inner surface of the winder frame 8, and can be raised and lowered diagonally up and down. .

41 is a detector that detects that the take-up roll 5 is in a position where it does not interfere with the descent of the core injector 17 when the cradle 11 swings and descends;
A pulse signal is generated according to the swing amount of the cradle 11. 42 is a detector for the position of the core injector 17, which generates a pulse signal according to a change in the position of the core injector. 43 is a detector for the position of the rider roll 6, which generates a pulse signal according to a change in the position of the rider roll.

Now, FIG. 1 shows a state in which the web is wound around a core in a winder and the winding diameter is increased. The winding drums 1 and 2, the winding roll 5, and the rider roll 6 are rotating at high speed. Further, the roll ejector 9 is stationary at the most retracted position.

On the other hand, the cradle 11 is at the upper limit position as shown, and the tape applying device 13 is at the lower limit position. Further, the core injector 17 is in the illustrated state at the upper limit position. When the winder operator is in the above state, the winder operator places the core needed to produce the next take-up roll onto the core receiver (21 in FIG. 2) that is swingably provided at the top of the tape applicator 13. Arrange.

Next, the operation control method will be explained based on the automatic wholesale change work diagram shown in FIG. 6. First, the winder winds a predetermined winding length and then the winder stops. Here, the operator presses the operation switch to start wholesale replacement. This operation causes the rider roll 6 to rise to the upper limit position (FIG. 2). At the same time, the core chuck 7 is released from the core end face.

Next, the core chuck 7 is raised to its upper limit by the core chuck release signal _S1 (FIG. 3). Further, the roll ejector 9 starts extrusion in response to the core chuck upper limit signal _S2 . Then, the cradle 11 starts to descend in response to a signal _S3 indicating the extrusion limit of the roll ejector 9. However, before that, the cradle 11 is
is down halfway.

After the cradle 11 starts descending, the core injector 17 automatically starts descending, but if the descending is too fast or if the cradle 11 stops mid-descend due to a failure, the take-up roll 5 and core injector 17 17 will occur, the position signals transmitted by the detectors 41 and 42 will be compared and examined, and the core injector 17 will move downward while confirming that no collision will occur (FIG. 4).

Next, the roll ejector 9 returns from the extrusion limit,
Detects the intermediate position (detection signal S ₆ ) and stops. Then, the core chuck 7 is lowered by the detection signal _S6 (FIG. 5). Further, the core injector 17 reaches the lower limit and stops, and after a fixed time (usually 2 to 3 seconds) of the core injector lowering position signal S ₁₀ , it starts to rise (ascending command signal S ₇ ).

Next, simultaneously with the start of the rise of the core injector, the rider roll 6 starts to fall. The lowering position of the rider roll 6 is detected by the detector 43 (position signal
_S8 ). The rider roll 6 is lowered while continuously comparing the position signal S ₈ of the rider roll 6 and the position signal S ₄ of the core injector and confirming that the two devices do not collide. Next, after the core injector 17 starts rising, the core chuck 7 starts its pressing operation after a certain period of time (usually 1 to 2 seconds) has elapsed. Further, when the lower limit position signal _S9 of the rider roll 6 is transmitted, the roll ejector 9 starts the backward movement again from the intermediate temporary stop position.

With the above steps, the series of wholesale replacement work is completed, and the next winding work begins. Detection signals S ₁ , S ₂ , S ₃ , S ₆ , S ₉ , S ₁₀
Since it is a well-known technology that the raising command signal _S7 can be easily obtained using a commercially available limit switch, a non-contact switch, the same signal as that for starting the raising of the core injector 17, the explanation thereof will be omitted. Further, the position signal _S4 is a signal obtained by a detector 42 that transmits pulses from a rotary encoder or the like connected to the shaft of the rope drum 19 that drives the rise and fall of the core injector 17, and the position of the core injector 17 can be determined by the number of pulses. Can be done.

Further, the signal _S5 is obtained by transmitting the swing amount of the cradle 11 to a rotary encoder (detector 41) via a chain or belt, etc., and is obtained as a pulse signal corresponding to the magnitude of the swing amount. The signal _S8 is a signal obtained by a rotary encoder (detector 43) connected to the rotating shaft of the up-and-down system of the rider roll 6.
It is obtained as a pulse signal corresponding to a change in the position of the rider roll 6.

Next, a control method for preventing interference between the winding roll 5 and the core injector 17 will be explained. In FIG. 7, simultaneously with the start of the downward movement of the cradle 11, a downward movement start signal for the core injector 17 is transmitted.
At this stage, the position signal _S5 of the cradle 6 and the position signal _S4 of the core injector 17 are compared, and the cradle 1
If it is determined that the core injector 17 will not collide with the winding roll 5, which is the largest according to the specifications above, the core injector 17 starts to move downward.

Further, the comparison between the signals S ₅ and S ₄ is continued thereafter, and the lowering operation of the core injector 17 is continued while confirming that the core injector 17 does not collide with the winding roll 5, and the lowering position signal of the core injector 17 is continued.
When _S10 is applied, the core injector 17 stops its downward movement. Furthermore, if there is a risk of collision with the take-up roll 5 during the core injector's lowering operation, the lowering operation is temporarily stopped until the possibility of collision is eliminated.

Next, a control method for preventing interference between the rider roll 6 and the core injector 17 will be explained. In FIG. 8, simultaneously with the start of the rise of the core injector 17, a signal to start the fall of the rider roll 6 is transmitted. At this stage, the core injector position signal S ₄ and the rider roll 6 position signal S ₈ are compared, and the core injector 17
If it is determined that the rider roll 6 does not collide, the lowering operation of the rider roll is started. signal
The comparison between S ₄ and S ₈ is continued after that, and the descending operation of the rider roll 6 is continued while confirming that the rider roll 6 does not collide with the core injector 17. When the rider roll descending position signal S ₉ is input, The rider roll 6 stops its downward movement.

If there is a risk of collision with the core injector 17 during the lowering operation of the rider roll 6, the lowering operation is temporarily stopped until the possibility of collision is eliminated.
Note that determining the operation based on the position signal explained in FIGS. 7 and 8 is a well-known technique that can be easily performed using the sequence controller or microcomputer controller used to control the winder. Therefore, detailed explanation will be omitted.

Conventionally, devices that interfere within the operating range operate the next device only after one device has completed its movement to its extreme position. In the present invention, a detector is provided to continuously measure the position of these devices in the middle of operation, and the devices are operated at the same time, and one of the devices is temporarily stopped only when the device is in an interference position to avoid interference. Therefore, by doing this, the waiting time until one operation is completed is eliminated, and the replacement time is shortened.

In addition, looking at the example in Figure 6, compared to the conventional method of lowering the core injector after the cradle has completed its operation and lowering the rider roll after the core injector has risen, the time is reduced by 16 seconds, and the total replacement time is 39 seconds.
seconds. Of course, compared to the 100 to 110 seconds that a conventional winder requires, the automated winder's changeover time is much faster.
Wholesale replacement time has been drastically shortened from 60 seconds.
The winding efficiency of the winder is greatly improved.

[Brief explanation of drawings]

Figures 1, 2, 3, 4 and 5 are side views of the device showing embodiments of the invention in different operating states, and Figure 6 shows an embodiment of the invention. The automatic wholesale change operation diagram, FIGS. 7 and 8 are block diagrams illustrating the operation of the apparatus showing the embodiment of the present invention. Explanation of the main parts of the figure, 1, 2... Winding drum,
3...web, 4...core, 5...take-up roll,
6... Rider roll, 7... Core check, 11
...Cradle, 17...Core Injector, 4
1, 42, 43...Position detector.

Claims (1)

[Claims] 1. In the roll wholesale change system of a web winder, when operating multiple devices that may interfere with each other within the operating range, it is possible to send a signal to each device corresponding to the amount of movement during operation. Connect the position detectors and receive the position signals emitted from each detector by a controller that can perform comparison calculations to determine whether or not there is interference, while simultaneously maintaining a positional relationship that does not cause interference. An automatic wholesale change control method for a web winding machine, characterized by shortening the overall operating time by operating it in the required direction.