JPH0742090Y2 - Contact type scanning sensor cleaning device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a cleaning device for a contact type scanning sensor, which is a cleaning device for easily removing foreign matters such as collars adhering to a contacting sensor head. Is.

[Prior Art] In a paper mill, a contact scanning sensor is used to measure the thickness and other properties of continuously running paper.

[Problems to be solved by the present invention] Paper to be measured includes general base paper and high-grade coated paper, but in the case of a sheet having a coating layer on the surface such as high-grade coated paper, contact type paper is used. In the case where the sensor head comes into contact with the sheet surface like a scanning sensor, foreign matter such as color adheres to the sensor head, and when it dries and solidifies, it causes streak on the sheet surface as the sensor head moves, and Adhesion may cause a decrease in measurement accuracy and a measurement error.

Conventionally, a device for cleaning the head of such a contact type scanning sensor has not been known, so the measurement is stopped,
After evacuating the sensor head, an operator wipes the sensor head with a cord or cloth to wash it.

However, the above method has the following drawbacks, and measures for removing foreign matter are urgently needed.

1) The time when foreign matter adheres is unknown.

2) The measurement must be temporarily interrupted to clean the sensor head, and automatic control is disabled during this period.

3) The foreign matter adhering to the sensor head is dried and adheres firmly to the head, so the removal work is troublesome.

4) When using MOL (mat online) equipment that produces surface gloss, the BM meter cannot be used to prevent streaks.

The present invention provides a cleaning device for a contact-type scanning sensor that can easily and reliably clean the scanning sensor without interrupting the measurement.

[Means for Solving the Problems] The first invention is for cleaning under the frame of a scanning sensor mounted perpendicular to the sheet traveling direction of paper or the like, parallel to the sheet and at the same height. The cloth is stretched, and the traveling locus of the head of the scanning sensor is set in a range in which it slides over the traveling sheet and comes into contact with the cleaning cloth, while the cleaning cloth has one end wound around the take-up shaft. It is mounted so that the cleaning position can be easily moved at any time.

According to a second invention, an air pipe having a plurality of air nozzles is attached above the position of the cleaning cloth with which the head of the scanning sensor is in sliding contact, and the air nozzle adheres to the surface of the cleaning cloth. The dust is removed by blowing it away.

[Operation] In addition, the frame of the scanning sensor is formed wider than the width of the running seat, and the scanning sensor continuously reciprocates between both ends of the frame, and is separated from the seat just before the end of the frame. After reaching the cleaning cloth that is parallel to the running sheet and stretched at the same height, it contacts again, moves to the end, then reverses and moves toward the running sheet After opening at the section, the running seat is measured, inverted at the other end of the frame, and this operation is repeated continuously.

The cleaning cloth is stretched and is in a stationary state, and when the head of the scanning sensor is in sliding contact, foreign matter adhering to the sensor head is rubbed with the cleaning cloth and easily removed. .

The cleaning cloth used in the present invention is not particularly limited, and woven fabrics such as caraco, Amaca, gabardine, callen, and broad cloth can be used, but thick broad cloth is preferably used. The cleaning cloth is wound around two guide rolls which are orthogonal to the running direction of the sheet and arranged at the same height, one end of which is wound around a winding shaft and the other end of which is a weight or a winding. Wind it up with the take-up shaft and 2
It is stretched between the guide rolls of the book.

When the scanning sensor head is repeatedly washed with the cleaning cloth as described above and the cleaning cloth is contaminated, if you pull the cleaning cloth out of the take-up shaft and use it as a new cloth surface, continue cleaning with a new cloth surface. Is performed.

That is, according to the present invention, the sensor head can be cleaned simultaneously with the measurement of the sheet in the continuous paper making process, and it is not necessary to interrupt the measurement to remove the foreign matter of the sensor head as in the conventional method, and the sensor head can be attached to the sensor head. Foreign matter that remains is not in a dry state and can be easily removed.

At the papermaking process site, there is dust generated from paper powder or machinery in the atmosphere, and this dust may adhere to and contaminate the cleaning cloth.

In order to prevent such dust from adhering, a second invention is to attach an air nozzle to the upper part of the cleaning cloth which the head of the scanning sensor contacts, and blow the dust adhered to the cleaning cloth to remove the dust. By removing it, it is possible to prevent the cleaning cloth from being contaminated with dust.

[Embodiment] FIGS. 1 and 2 show one embodiment of the present invention. Next, the present invention will be specifically described with reference to these drawings. A frame 1 is mounted orthogonally to the traveling seat S, a sensor head 2 reciprocates along the frame 1 below the frame 1, and a scanning sensor cleaning device is provided below the frame 1. (Sensor cleaning device) 3 is attached.

As shown in FIG. 2, the sensor cleaning device 3 has a cleaning cloth 4 attached in parallel with the traveling sheet S, and one end of the cleaning cloth 4 is wound around a winding shaft 5. The cleaning cloth 4 is hung on the guide rolls 6, 6 arranged at the same height as the sheet S, and a weight W is attached to the other end thereof so that the cleaning cloth 4 is stretched between the guide rolls 6, 6 at the same height as the sheet S. It is installed as installed.
Although the weight W is attached to the other end of the cleaning cloth 4 in the illustrated example, the weight W is not limited to this and may be wound around the winding shaft and stretched. Also, the first
In FIG. 2 and FIG. 2, reference numeral 7 is a handle for pulling out the cleaning cloth 4.

While the sensor head 2 reciprocates between both ends of the frame 1, the sensor head 2 continuously measures the physical properties (for example, the thickness of the sheet) of the sheet S traveling in the arrow direction. On the installed side, the seat S
Is set to a traveling locus in which the cleaning cloth 4 of the sensor cleaning device 3 comes into contact with the cleaning cloth 4 while sliding away from the edge.

The cleaning cloth 4 is in a stationary state, and the sensor head 2 is rubbed by the surface of the cleaning cloth 4 to remove foreign matter adhering to the contact surface. Moreover, since these foreign matters are attached to the continuous paper making and are in a wet state, they can be easily removed even by rubbing them on the surface of the cleaning cloth 4.

The sensor head 2 from which the foreign matter is removed by the cleaning cloth 4 is reversed at the end of the frame 1 and moves in the direction of the sheet S so that the measurement can be continued in a clean state. Therefore, there is no streak caused by the foreign matter that adheres to the sensor head and is dried and solidified as in the conventional case.

In addition, the sensor head 2 is temporarily processed at a portion in contact with the cleaning cloth 4, but is softly processed so as not to measure at a portion other than the sheet, so that there is no hindrance to the measurement of the continuous sheet. Moreover, since no foreign matter is attached to the sensor head 2, it is possible to continuously measure with high accuracy.

When the cleaning of the sensor head 2 is repeated and the cleaning cloth 4 is contaminated, the handle 7 can be rotated to pull out a new surface of the cleaning cloth 4 and continue the measurement, so the operation is extremely simple. .

At the measurement site, there is paper dust and other dust that accompanies machines,
When the cleaning cloth 4 may be contaminated with dust, as shown in FIGS. 1 and 2, a plurality of air is placed above the position of the cleaning cloth 4 with which the sensor head 2 is in sliding contact. An air pipe 9 having a nozzle 8 is attached, and air is blown from the aerosol 8 at a constant cycle by a timer to prevent dust from adhering.

[Effects] As described above, according to the present invention, since the head of the contact scanning sensor can be cleaned while being measured with an extremely simple device, foreign matter does not adhere to the sensor head, and thus no streak is present. Further, it is possible to perform highly accurate measurement without a measurement error, and it is possible to continuously measure the sheet without interrupting the measurement.

Further, the contamination of the cleaning cloth by dust in the factory atmosphere can be prevented by blowing air from the upper part of the cleaning cloth to blow away the dust.

[Brief description of drawings]

FIG. 1 is an explanatory view of a state in which the present invention is attached, and FIG. 2 is an explanatory view of an embodiment of the present invention. 1: Frame, 2: Sensor head, 3: Sensor cleaning device, 4: Cleaning cloth, 5: Take-up shaft, 6: Guide roll, 7: Handle, 8: Air nozzle,
9: Air pipe.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display area // G03G 15/00

Claims (2)

[Scope of utility model registration request] 1. A cleaning cloth is stretched in parallel with the sheet at the same height under a frame of the scanning sensor mounted perpendicular to the sheet traveling direction. The running locus is set in a range in which the running cloth is in sliding contact with the cleaning cloth beyond the running sheet, while the cleaning cloth has one end wound around a winding shaft and can be pulled out. Cleaning device for contact scanning sensor. 2. A scanning sensor cleaning apparatus according to claim 1, wherein an air nozzle is attached to an upper portion of a portion of the cleaning cloth which is in sliding contact with the sensor head. Sensor cleaning device.