JPS63267455A - Film chip crusher - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Industrial Field of Application) The present invention provides a method for producing film scraps that can be used in scrap crushers installed in factories that produce films or sheets using resin raw materials, scrap crushers in paper factories, etc. This relates to a crushing device.

(Prior art) Conventional film or sheet (hereinafter referred to as film) The treatment could be performed with one pulverizer.

However, a separate crushing device was required to crush the large amount of defective products (mill roll scraps: hereinafter referred to by this name) wound up by the winder.

This is due to the following reason. In other words, in large-scale film manufacturing plants, the amount of pulverization can reach several tons per hour, but as there is no track record of manufacturing large-scale film pulverizers, large-capacity pulverizers are difficult to manufacture in terms of cost, performance, and equipment. therefore, the whole process design stage
This is because the direction in which the amount of pulverization per unit is reduced as much as possible was selected. For the above reasons, it has been impossible to directly crush mill roll scraps while directly crushing products from the production line, as this would exceed the crushing capacity of the crushing equipment.

Therefore, in order to crush directly from the production line using one crushing device, and to crush mill roll waste in different time periods, it is important to avoid abnormalities on the production line that may occur at any time during mill roll crushing. Conventionally, unmanned operations for crushing mill roll scraps have not been possible, as it is necessary to maintain a system that can immediately respond to such requests and crush films from the production line.

(Problems to be Solved by the Invention) In order to carry out an unmanned crushing operation of mill roll scraps using a conventional film scrap crusher, it is necessary to separately install a mill roll scrap crusher and a crusher for scrap film generated on the production line.
Since each mill had to be installed at a time, there were problems such as the need for two crushing devices.

The present invention aims to make this process possible with a single pulverizer.

(Means for Solving the Problems) For this reason, the present invention provides a film waste crushing device that is provided with supply ports for film waste generated in the production line and for defective films wound up by a winder. , an automatic film discharge device is provided at the supply port for defective film wound by the same winder, and this is used as a means to solve the problem.

(Function) When crushing film waste generated from the production line,
The film scraps are fed into the crusher through the supply port, cut and crushed, and sent to the next process through the transfer pipe. Next, to crush the defective film, operate the automatic film discharging device installed at the defective film supply port to nip the defective film into the roll at the entrance of the crushing device, then open the automatic film discharging device, and then Pulverization begins by operating the rolls at the entrance and the crushing device, and after that, unmanned operation is possible.

(Example) The present invention will be explained below based on the example shown in the drawings.
The figure shows one embodiment of the present invention, where 4 is a rotor equipped with a rotating blade, 5 is a fixed blade, and 3 is a motor-driven feed roll for controlling the feed amount of the film to be crushed.

Further, 1 is a nip roll, and 2 is a mill nip roll.

Now, when crushing the waste film generated from the production line, it is input from the input port BB, taken up by the nip roll 1, passed through the chute 9 to the feed roll 3, and cut by the rotor 4 equipped with a rotating blade and the fixed blade 5. Only the pulverized material that has passed through the screen 6 is sent to the next process through the waste air transfer pipe 7 by air sent from the air supply pipe of the air transfer pipe. The pulverized material that does not pass through the screen 6 and is not pulverized sufficiently finely is blown up by the wind pressure caused by the rotation of the rotor, and is further cut and pulverized.

On the other hand, when mill roll waste is to be crushed, the mill roll waste is first set on the unwinding table 11, and before operating the rotor 4 and feed roll 3, the mill nip roll 2 with the nip closed is operated from the input port AA. Mill roll waste is fed into the open feed roll 3 through a chute 10.

Next, mill nip roll 2 is stopped and feed roll 3 is stopped.
At the same time, the nip of the mill nip roll 2 is opened. Next, after confirming that mill roll waste is nipped in the feed roll 3, the rotor 4 and the feed roll 3 are operated to start pulverization. After this, unmanned operation will be possible.

If an abnormality occurs in the production line during mill roll waste crushing operation and it becomes necessary to immediately crush the film from the production line, the brake is applied to stop the feed roll 3 while keeping it nipped. A few seconds later, millnip roll 2
At the same time as the nip is closed, the brake is released, the feed roll 3 is reversed, and the film being crushed is discharged.

Next, the feed roll 3 is stopped so that the waste film generated in the production line can be crushed.

This operation will be explained in detail according to FIGS. 1 and 2. In the figure, 12 is a control panel that performs this switching control, 13 is a push button box for nipping the nip roll 1 installed on the production line, and 14a to 14c are Air cylinders 15a to 15b are solenoid valves for opening and closing the nip. Also, ■ indicates the electric motor, the same indicates the brake, and ) indicates the forward rotation direction. In addition, if an abnormality occurs on the production line during the mill roll waste crushing operation and it is necessary to immediately crush the sheet with the film from the production line, a crushing preparation start command signal is input from the production line to the control panel.

In response to this, the following steps 1) to 5) are performed simultaneously.

1) Apply excitation voltage to the solenoid valve 15a from the control panel 12, operate the air cylinder 14a, and nip the feed roll 3. This is an unnecessary operation since these two tabs are normally closed during mill roll grinding, but if the nip is open for some reason, normal discharge of the mill roll will be impossible, so do this. It is an action.

2) Similarly, turn off the power to the electric motor of the feed roll 3.

3) Turn on the brake of feed roll 3.

4) Turn on the brake of the unwinding table 11. This is to prevent mill roll waste from loosening from the unwinding table 11 to the feed roll 3.

5) Start the delay timer 100 in the control panel 12.

The set time of this timer 100 is the time required for the feed roll 3 to completely stop by the brake, and is about 2 seconds to 5 seconds.

Next, when the delay timer 100 times up, the following steps 6) to 8) are performed simultaneously.

6) Set the brake of feed roll 3 to leaf F.

7) Start feed roll 3 in reverse.

8) Start delay timer 200. This timer 20
0 is to set the timing to start the mill nip roll 2 after the feed roll 3 has completely risen to a steady rotation speed in the reverse direction, and to discharge the mill roll waste to the upper part of the feed roll 3 which is out of the nip. The mill nip roll is provided so that the mill roll waste can be discharged out of the chute 10 with a small torque, and the set time is about 3 seconds to 7 seconds.

Next, when the delay timer 200 times up, the following steps 9) to 131 are performed simultaneously.

9) Nip (close) the mill nip rolls 2.

101 Turn off the brake of mill nip roll 2.

1υ Start mill nip roll 2 in reverse.

12) Set the brake of the unwinding table 11 to leaf F.

Note that it is not necessary to turn off the brake of the unwinding table 11 at this stage, and if the rotation of the unwinding table 11 has completely stopped at the stages 6) to 8) in the previous section, the brake may be turned off at that stage.

131 Start delay timer 300. The setting time of this timer is millnip roll 11 and shoot 10.
This is the time it takes to discharge the mill roll waste inside the chute to the outside of the chute, and it depends on the peripheral speed of the mill nip roll, but it is about 5 seconds to 10 seconds.

Next, when this delay timer 300 times up, the following steps 11 to lη are performed simultaneously.

14) Stop the reverse rotation of the feed roll 3.

1.Turn on the brake of feed roll 3.

16) Stop the reverse rotation of the mill nip roll 2.

lη Start delay timer 400. This timer is provided for the same reason as timer 100, and the set time is also the same.

Next, after the delay timer 400 has time-amplified, the following steps 18) to 211 are performed simultaneously.

Turn off the brake of the old feed roll 3.

Start the old feed roll 3 in the normal rotation direction.

2φ Open the nip of nip roll 1.

21) Start the rotation of nip roll 1.

At this stage, a nip close signal is awaited from the nip roll nip push button box 13 at the entrance of the production line. When this signal is input, the following steps 24 to 24 are performed simultaneously.

2 → Nip the nip roll 1.

23) Open the two legs of the feed roll 3.

2a Start delay timer 500. This timer setting time is set immediately after manually inputting the scrap film from the input port BB, when the nip of the tube roll 1 is pressed to the nip close button of the push button box 13)
This is the time it takes for the scrap film to reach the feed roll 3 after pressing , and if the scrap film is fed from the input port BB, the value of the set time can be kept constant as long as the scrap film input speed is always within a certain range. If the film feeding speed changes when feeding into the BB (there is no change in speed until it reaches the feed roll after feeding), the set time can be changed by inputting the film speed signal to the control panel 12. may be calculated in the control panel and set in the timer 500 as the time.

Next, when the delay timer 500 times up, the nip of the feed roll 3 is closed, and the switching between mill roll waste crushing and waste crushing from the production line is completed.

(Effects of the Invention) As explained in detail above, the present invention is equipped with an automatic film discharge device at the supply port of the defective film wound up by the winder, so that one crushing device can carry out the unmanned crushing operation of mill roll waste. ,
It is possible to carry out both grinding of the film originating from the production line.

[Brief explanation of the drawing]

FIG. 1 is a system diagram of a film waste crusher showing an embodiment of the present invention, and FIG. 2 is a control flowchart for automatically switching from the mill roll waste crushing state to production line waste crushing. Explanation of main parts of the diagram 1- Nip roll 2-- Mill nip roll 3
- Feed roll 4 - Rotor 5 - Fixed blade 6 - Screen 7 - Waste air transfer pipe 9 - Chute (film waste supply port) 10 - Chute (defective film supply port) 11 - Mill roll layer unwinding and unwinding 12 - Control panel 13 - Push button box 14a - Air cylinder 15a - Solenoid valve AA - Mill roll waste inlet 8B - Production line side layer inlet Fig. 1

Claims (1)

[Claims] In the film waste crushing device, the device is provided with a supply port for film waste generated on the production line and a defective film wound by the winder, and a feed port for the defective film wound by the winder is provided. A film waste crushing device characterized by being equipped with an automatic film discharge device.