JPH0351392A - Dirt washer of supporting belt-like material in papermaking machine - Google Patents

Abstract

PURPOSE:To surely wash dirt by photographing supporting belt-like material using camera and strobe light without blur, detecting position and size of dirt with image processing device and jetting washing liquid to said position. CONSTITUTION:A camera 2 adjustable of visual field and focus is provided at upper surface side of supporting belt-like material 1 in papermaking machine and an strobe light 3 is provided at lower surface side of the supporting belt-like material 1 so as to oppose the camera 2 as a light source. Image photographed by the camera 2 is input into an image processing device and position and size of dirt is output as dirt information, then input into a controller, thus washing liquid is jetted from a nozzle 18 to said position and the washed liquid is sucked into a suction device 19.

Description

Detailed Description of the Invention [Industrial Field of Application] The present invention relates to support belts of paper making machines that detect and clean dirt on support belts used in wire parts, press parts, dry parts, etc. of paper machines, etc. This invention relates to a device for cleaning dirt from objects.

[Prior Art] In wire parts, press parts, dry parts, etc. of paper machines, supporting belt-like materials such as wires, felt, canvas, etc. are used to transport paper raw materials.

Conventionally, in order to clean stains on a support strip, the position and size of the stain were visually detected and the support strip was cleaned.

[Problem 5 to be solved by the invention] Recently, paper making speeds have become faster, so it has become difficult to detect dirt while the machine is running, so it is necessary to stop the machine and check the location and size of the dirt. I had to investigate the problem, which took time and sometimes caused a delay in dealing with the problem.

The present invention provides a dirt cleaning device for a support strip of a paper manufacturing machine, which detects the position and size of dirt on the support strip while the paper machine is in operation, and appropriately cleans the soiled areas. The purpose is to

[Means for Solving the Problems] A dirt cleaning device for a support strip of a paper manufacturing machine according to the present invention includes a field of view/focus adjustment device that is provided on one side of the support strip of a paper manufacturing machine and moves in the width direction of the support strip. a strobe that is provided on the other side of the support strip facing the camera and moves in the width direction of the support strip in synchronization with the camera; and a strobe that moves in the width direction of the support strip in synchronization with the camera; an image processing device that detects the position and size of dirt on the support strip; a large number of nozzles that are distributed on one side of the support strip and spray a cleaning liquid onto the support strip; The present invention is characterized by comprising a controller that selectively supplies cleaning liquid to the nozzle in accordance with the position and size of detected dirt.

[Function] A camera with adjustable field of view and focus and a strobe capable of high-speed photography take images of the support strip without blur, and an image processing device detects the location and size of dirt, and a nozzle is placed at that location. The support strip can be cleaned while the paper machine is running by spraying cleaning liquid from the paper machine.

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

In FIG. 1, a camera 2 whose field of view and focus can be adjusted is provided on the top side of a support strip 1 of a paper manufacturing machine such as a paper machine, and a camera 2 with adjustable field of view and focus is provided on the bottom side of the support strip 1 to face the camera 2. A strobe 3 is provided as a light source. As shown in Fig. 2, the paper machine has a wire part 4, a press part 5, and a driver tray.The support strip l of the wire part 4 is made of wire shaped like a wire mesh, and the support strip of the press part 5 is Felt is used for the object 1, and canvas is used for the support band-like object 1 of the Dry Toro, and a camera 2 is provided on the top side of each of these heart support band-like objects 1, and a strobe 3 is installed on the bottom side. is provided so that each support strip-like object 1 can be photographed.

As shown in FIG. 3, the camera 2 is supported by a movable frame 7 that can be raised and lowered to take pictures of the support strip 1 while moving in the width direction of the support strip 1, and the strobe 3 is mounted on a fixed frame 8.・It moves in the width direction of the support strip l while synchronizing with the camera 2.

Luno uses strobe 3 as a light source for the following two reasons.

(1) Shafta Camera Teha l/30,000 seconds ~ 115
Although high-speed photography of 0,000 seconds is the limit, high-speed photography of 1/100,000 seconds to 171,000.000 seconds is possible with a strobe, and it is possible to photograph the support strip I that is moving at high speed. It is possible to suppress the blurring of time.

(Z Generally speaking, when comparing a continuous light source and a pulsed light source, a pulsed light source can easily obtain a larger amount of light, and if the light source emits strong light against the support strip 1, the camera aperture can be narrowed down to reduce the disturbance. This is because even if the support strip (2) is thick, light can pass through it.

Images taken by the camera 2 are input to an image processing device 10 having a display panel 9. As shown in FIG. 4, when there are dark stains 11 and light stains 12 on the support strip l of the original wave object, the image of the camera 2 is binarized by the image processing device 10 as shown in FIG. After processing 13, only dark stains 11 appear, and as shown in Fig. 6, ternarization processing 1
4, dark t9 stains 11 and light stains I2 appear. In the image processing device 10, a dark stain 11 is extracted from an image that has been subjected to binarization processing 13 or ternarization processing 14 using an input/output device 15 consisting of a keyboard, a disk, a printer, etc.
Alternatively, the positions and sizes of the dark stains 11 and light stains 12 are output as stain information 16, and are manually inputted to the controller 17 as cleaning control commands.

A nozzle 18 is disposed on the upper surface of the support strip 1 as shown in FIG. A suction device 19 and a sepole 20 are provided. As shown in FIG. 7, a large number of nozzles 18 are provided so as to be distributed in the width direction of the support strip 1, and a valve 21 is attached to each nozzle. The valves 21 are individually opened and closed by the controller 17 described above, and when the valves 21 are opened, high-pressure cleaning liquid is sprayed toward the support strip 1. The suction device 19 is for suctioning the cleaning liquid so as not to affect the paper material, and is equipped with valves 22 that are individually opened and closed by the controller 17. Suction device 1
Reference numeral 9 is provided directly below the nozzle 18 or below the nozzle 18 in the direction of movement of the support strip l, and as shown in FIG.
If it is set in the lower direction of movement, of course Sebor 2
0 is attached.

In the above-mentioned apparatus, the camera 2 (FIGS. 1 to 3)
The photographing of the support strip 1 (see figure) is first carried out by widening the field of view and moving the support strip 1 in the width direction along the movable frame 7, and the photographed image is processed by the image processing device 10 as shown in FIG. The binarization process 13 shown in FIG. 6 or the ternary conversion process 14 shown in FIG.
is moved in the width direction of the support strip L to specify the position and size of the dirt, which is used as dirt information 16, and is manually input to the controller 17 as a cleaning control command. The controller 17 outputs a control signal 23 corresponding to the position and size of the dirt, and selects one of the many nozzles 18 distributed in the width direction of the support strip 1 according to the position and size of the dirt. The valve 21 is opened to spray the cleaning liquid from the nozzle 8, and the valve 22 of the suction device 19, which is necessary to suck the cleaning liquid, is opened to remove the support strip 1.
Clean dirty areas.

Since the support strip 1 is endless, the camera 2
When a dirty spot is circulated between the camera 2 and the strobe 3, the camera 2 repeatedly takes pictures and the image processing device 10 performs image processing and judgment, and if dirt remains, the above cleaning is continued. , Finish cleaning when the dirt is gone.

[Effects of the Invention] The present invention detects the position and size of dirt on the support strip while the papermaking machine is in operation, and properly cleans the dirt while the papermaking machine continues to operate, reducing papermaking efficiency. We can supply stable products without any problems.

[Brief explanation of drawings]

Fig. 1 is a system diagram of an embodiment of the present invention, Fig. 2 is a side view showing the main parts of the paper machine, Fig. 3 is a partially enlarged front view seen from the direction ■ in Fig. 1, and Fig. 4 6 to 6 are plan views showing the state of image processing, and FIGS. 7 and 8 are perspective views showing the arrangement of the nozzle and the suction device. In the figure, ■ indicates a support strip, is a camera, is a strobe, 10 is an image processing device, 17 is a controller, and 18 is a nozzle. Patent applicant Ishikawajima Harima Heavy Industries Co., Ltd.

Claims (1)

[Claims] 1) A camera with an adjustable field of view and focus that is provided on one side of a support strip of a paper manufacturing machine and moves in the width direction of the support strip, and a camera that is provided on the other side of the support strip opposite to the camera. a strobe that moves in the width direction of the support strip in synchronization with the camera; an image processing device that detects the position and size of dirt on the support strip based on images taken by the camera; A large number of nozzles are distributed over one side and spray a cleaning liquid onto the support strip, and the cleaning liquid is selectively supplied to the nozzles in accordance with the position and size of dirt detected by the image processing device. A dirt cleaning device for a supporting strip of a paper manufacturing machine, comprising a controller.