FI127970B - Method and equipment for adjusting the position of an object, and a measuring and adjusting device - Google Patents

Abstract

The invention relates to a method and an apparatus for adjusting the position of an object, preferably in cases where the object is controlled by several parallel actuators (1). In the solution, an advantageous position element (8) is placed on the actuator (12) of the actuator (1), such as a permanent magnet which accurately indicates the position of the actuator (12) relative to the actuator (1) body (10). The position of the adjusting member (12) is read by a separate reader device (16, 19a, 19b) common to all actuators (1). The reader has its own display. The reader device may also be connected to a smart device, such as a tablet or a smartphone.

Description

METHOD AND APPARATUS FOR ADJUSTING THE POSITION OF THE TARGET AND MEASURING AND ADJUSTING DEVICE

The invention relates to a method as described in the preamble of claim 1 and to an apparatus for adjusting the position of the object as set out in the preamble of claim 9. The invention further relates to a measuring and regulating device as set forth in the preamble of claim 17.

Many industrial machines, such as paper machines, have several parallel and similar actuators, such as regulating and measuring devices. Such actuators are used, inter alia, as a lip opening adjuster for a papermaking machine head, which adjusts the transverse basis weight profile and the fiber orientation of the paper web 15. These actuators are typically located in the transverse direction of the paper web at intervals of about 100-120 mm, and at best there are about 100 such manual actuators in one headbox. The operating environment of machines in factories is often very challenging, with high temperatures, humidity, dust and vibrations posing high challenges to mechanical actuators and reliability. Electric devices are being replaced by manual actuators through dilution control.

The method and apparatus according to the invention, hereinafter referred to as the solution according to the invention, for adjusting the position of the object are particularly suitable for use in machines using several similar and parallel actuators, such as regulating and measuring devices.

In accordance with the prior art, the plurality of parallel actuators mentioned above each typically include a dimensionally accurate actuator for adjusting a particular part of the machine, such as a lip opening adjusting tip 35, and an additional measuring device such as a mechanical dial that typically displays a precise position. The precision measuring device included in each actuator is an expensive component that

20165274 prh 10 -04- 2019 needs periodic maintenance and calibration. In addition, the gauge makes the actuator a complex unit. There are also known solutions in which the measuring device is electrical and each actuator provides a centralized reading of the position of the actuator control element 5.

Measuring instruments indicating the position of the actuator control, either conventional mechanical dials or electronic reading devices in the actuator itself, make the construction of the actuator complicated and expensive. The complexity also increases the sensitivity of the device to failure and the need for maintenance. Because in a particular machine function, such as a paper machine headbox lip adjustment, there are several pieces of the same actuator, up to 100, in parallel, the additional cost, sensitivity, and need for maintenance of a single actuator is a very significant factor.

According to the prior art, for example, adjusting the lip of a paper machine headbox is done manually by one actuator 20 at a time over the entire width of the paper web. The installer must have extensive experience in making adjustments and the effect of adjustments on the overall process, so that he can adjust the actuators of the individual actuators at the right time. The adjusted position of each actuator is recorded on either 25 paper forms or manually on an electronic device such as a tablet or smartphone. The previous steps are very time consuming because there are several actuators to be operated. Another problem is that with multiple measurements and their recording, the number of errors and 30 entries increases. In addition, the positions of the actuator controls must be checked from time to time to ensure that their settings are not altered by vibration, for example. If adjustments are allowed to change spontaneously, the quality of the product being run will deteriorate and the consequences 35 can be very expensive.

Since the existing mechanical dials are manual, they cannot be directly utilized if the measuring and adjusting

20165274 prh 10 -04-20199 The process is to be centralized and automated. Automation would require the modernization of mechanical dials, which is a costly undertaking.

The object of the present invention is to eliminate the above-mentioned drawbacks and to provide a cost-effective, reliable and, if necessary, automated method and apparatus for adjusting the position of the subject. The process according to the invention is characterized in what is stated in the characterizing part of claim 1. Correspondingly, the apparatus according to the invention is characterized by what is set forth in the characterizing part of claim 9. The measuring and control device according to the invention is characterized in what is stated in the characterizing part of claim 17. Other embodiments of the invention 15 are characterized by what is stated in the other claims.

In the method according to the invention, a plurality of identical parallel actuators, such as adjusting and miting actuators, are provided with a low-cost and reliable passive station element, such as a permanent magnet, and the actuators independent measuring devices are replaced by a common actuator reader. In addition to the position of the actuator control member, the reader recognizes the unique identifier of the actuator. The reader device may be connected to a smart display or the reader device may transmit information to a smart device such as a tablet or a smartphone. The smart display and / or the smart device includes application software which can, for example, display the positions of the multiple actuator controls 30 required for object adjustment or, for example, guide the user in adjusting the actuators.

The method according to the invention is characterized in that the position of each actuator control element relative to the actuator body 35 is read by one and the same reader device separate from the actuator. Correspondingly, the apparatus according to the invention is characterized in that the actuator has a position indicating the position of the actuator relative to the actuator body.

20165274 prh 10 -04-20199 passive drive element, and that the apparatus comprises a separate reader device for determining the position of each drive element. Further, the measuring and adjusting device according to the invention is characterized in that the measuring and adjusting device has a linearly movable adjusting element having a position element, such as a permanent magnet, indicating the exact position of the adjusting element relative to the body of the device.

An advantage of the solution according to the invention is that the construction of the actuators is simpler and less expensive to manufacture than the current actuators of the prior art. The actuator itself has no read-only 15 actuator, but the reader is a separate device that is precisely positioned on the side of the actuator. By means of a position sensor in the reader device, such as a hall sensor, the position of the actuator control element is read, for example relative to the actuator body, i.e. the positioning sensor has no mechanical contact with the station element during measurement; The same reader device is used to read the positions of several actuators, for example all actuators. The advantage here is that the solution of the invention enables expensive mechanical or electrical readers and gauges to be removed from the actuators themselves, whereby the actuator-specific readers and gauges can be replaced, for example, by a single shared reader and gauge. This allows significant cost savings in equipment manufacturing and operating costs.

It is also an advantage that the actuators according to the invention have a simple construction, which increases their reliability 35 and reduces the need for maintenance. A further advantage is that the prior art actuators can advantageously be converted to actuators according to the system of the invention, thus fully utilizing the control mechanism of the existing devices, but reading the position of the actuator actuator is also converted according to the invention. or the intelligent device can be used to guide the adjustment. The display and / or intelligent device has a precise indication of the position of each actuator control element. When the user comes to adjust the actuator, turn the smart display / smart device in which direction the single actuator adjustment screw should be turned and how much. For example, it may indicate on the display and beep when the adjustment is correctly set.

Another important advantage is that the system according to the invention enables various new and efficient uses to utilize the recording of measurement results. For example, in the arrangement of the lip opening of a paper machine headbox 20, in accordance with the invention, the operating modes may be:

the reset mode applies the other control mode, including the follow profile mode, displaying the actuator profile and detecting the change of position of the actuator.

Some of these uses or features20165274 prh 10 -04-20199 cannot be utilized in any reasonable way by prior art solutions.

It is also an advantage that the system according to the invention can also be easily automated. An inexpensive, wirelessly communicating small reader with its own small power supply can be mounted on each actuator 30, whereby the reader devices continuously transmit the position information of the actuator controls to the information system and / or display device. This allows, for example, the monitoring of the effective adjustment and, if necessary, a rapid reaction to the correct actuator in case of a change in the adjustment itself, for example due to vibration.

It is also an advantage that the system can utilize commercially available Tablet PCs and / or smartphones at low cost as a smart display device. smart devices. In this case, the reader device is a separate unit which transmits the identification of the actuator and the position of the actuator to the intelligent device, either via cable or wirelessly using, for example, 5 bluetooth, wlan or other suitable technologies.

In the following, the invention will be explained in more detail with reference to the accompanying drawings, in which: FIG. Fig. 3 is an oblique side and top view of one of the actuators, actuators and readers used in the solution of the present invention, with an integrated intelligent display device, the actuator and one basic principle used in the solution according to the invention;

20165274 prh 10 -04- 2019 Figure 4 is an oblique side and top view of the apparatus of the figure, wherein the reader device is configured to read the position of the actuator actuator and the display integrated with the reader device shows the position of the actuator to the user; , as well as a separate reader device for cable and wireless, and a smartphone for smart display and

FIG. 6 is an oblique side and top view of the actuator of FIG. 5, in which the reader device wirelessly transmits a real-time actuator control state to the user's smart phone and information system, and the smartphone guides the user to make accurate adjustments.

Figure 1 illustrates one embodiment of the solution according to the invention, wherein a plurality of parallel actuators 1 directly connected to one another 10 adjust the lip opening of the headbox 2 of the paper machine. By turning the actuator wheel 5 of the actuator 1, the position of the actuator 12, such as the output shaft, is moved in a linear motion either upwards or downwards. The adjusting member 12 communicates directly with the adjusting rod 3 which adjusts the height position of the object 4, such as the lip opening adjustment list, and thus the lip opening of the headbox 2. Thus, the adjustable object 4 in the solution of the embodiment example is the height position of the lip opening or lip top of the papermaking machine headbox 2 and the distance from the actuator 1. Typically, the paper20 machine headbox 2 has actuators 1 firmly attached to the headbox 2

Figure 2 is a simplified sectional view of one of the actuators 1 shown in Figure 1 and one of the basic principles used to read the exact position of the target 4 used in the solution of the invention. The actuator 1 includes, inter alia, a substantially hollow body 10 and adjusting means 5, 6a, 6b, 11 and 12 disposed therewith, the adjusting wheel 5 being preferably at the free end of the body 10, outside the body 10 and other components partially or completely inside the body 10. For example, the body 10 preferably has an adjusting member 12 axially movable with respect to the body (10) and a threaded adjusting shaft 35 11 which is rotated by the adjusting wheel 5 and whose threaded portions of the adjusting shaft 11 also screw into the double nuts 6a and 6b.

20165274 prh 10 -04- 2019

The exact position of the object 4 is obtained by reading the exact position of the actuator 12 forming the output shaft of the actuator 1. The exact position or position of the actuator 12 is read, for example, with respect to the body 10 of the actuator 1. Turning the actuator wheel 5 of the actuator 1 rotates the actuator shaft 11 with two different pitch threads. The two double nuts 6a and 6b and the screw arrangement associated with the actuator shaft 11 achieve a clear and precise linear movement of the actuator 12, which is known in the art. When turning the handwheel 5 clockwise, the actuator shaft 11 moves the actuator 12 linearly outwardly or downwardly with respect to the actuator body 10, and when the handwheel 5 is rotated counterclockwise, the actuator 12 moves linearly straight up or inwardly with the actuator 1 body 10.

The adjusting rod 3 is secured substantially free of clearance to the axially projecting portion 12b of the actuating member 12b from the body 10 of the actuator 1 by means of a securing pin 12a such that the adjusting rod 3 moves linearly with the adjusting member 12. Thus, by turning the handwheel 5, the handwheel 3 moves linearly with respect to the body 10 either outwardly or inwardly, i.e. practically up and down, while adjusting the position of the lip opening of the object 4, such as the headbox 2 of the paper machine. In the case of the example, the adjusting wheel 5 of the actuator 1 is also provided with a manual adjustment scale 5a.

A very inexpensive passive station element 8, such as a permanent magnet, is fixedly connected to the adjusting member 12, the position of which accurately indicates the height of the adjusting member 12 and thus also the height of the adjusting rod 3 of the actuator body 1. The positioning of the station element 8 on the adjusting member 12 provides a very simple, inexpensive, reliable, accurate and protected measurement and adjustment solution for determining the position of the adjusting rod 3. In addition, the measurement solution is completely maintenance-free.

The body 10 of the actuator 1 has a positioning member 9, such as one or more positioning pins 9a, to which a separate screenless reader device 19a is accurately mounted for reading the station element 8. In the example embodiment, there are two positioning pins 9a in parallel. The positioning means 9 ensures that the reading device 19a is always positioned at the exact same position on the body 10 of the actuator 1, and thus the measured and read position of the actuator 12 adjusting member 12 and the adjusting rod 3 are reliable.

An identifier 7, such as an NFC or RFID sensor, is attached to the actuator 1, e.g.

20165274 prh 10 -04- 2019

The reader device 19a first reads the unique identifier information of the actuator 1 from the sensor 7. The identifier information is read by the reader reader 13 of the reader device 19a, such as an NFC or RFID reader. Next, the reader device 19a is tightly seated on the positioning member 9 of the actuator 1, whereby the position reader reader 14, such as a hall sensor, disposed in the reader device reads the exact position of the station 20 in the actuator 1 relative to the actuator body 10. The reader sensor 14 reads the position of the station element 8 contactlessly through the body 10, i.e. the reader sensor 14 is not in mechanical contact with the station element 8 in the measuring step, but reading in this embodiment is carried out by means of a magnetic field. In this embodiment, the identification data of the actuator 1 and the position information of the actuator 12 are transmitted from the reader device 19a via a transmission cable 20. In this solution, as in other embodiments of the invention, the position information, or height 30, of the adjusting member 12 is directly proportional to the elevation position of the adjusting rod 3 and thereby also to the position of the target 4, or lip opening.

Fig. 3 is an oblique side and top view of 35 actuators 1 and reader 16 for use in the solution of the invention, with an intelligent display 17 for informing the user. In this embodiment, the positioning means 9 of the actuator 1 is similar to that of the actuator according to the above-described embodiment and consists, for example, of two positioning means in the foot 16, the counterpart, the transducer portions of the sensor 14 of the actuator 12. Pins and recesses with those positioning members.

positioning pin 9a. The high school positioning means 9 are precisely matched, the recesses 18 of which are tightly inserted into the positioning pins 9a when the weather station of the actuator 1 is read by means of a hall sensor on the reading device 16 in the reading device 16.

The positioning means 9 and vice versa, whereby the actuator 1 may also have positioning pins, and to which the positioning pins may also be precisely replaced

Fig. 4 is an oblique side and top view of the actuator 1 in a situation in which the reader 16 is disposed in the positioning member 9 of the actuator 1 to read the position of the position element 8 of the actuator 1. The display 17 of the reader device 16 shows the location of the station element 8 and / or adjustment instructions for the user.

Depending on the application software of the reader device 16, the display 17 informs the user of the history of the actuator 1, the current position information of the actuator 12, the position information of several actuators 1 connected to the machine or, for example, guidance for new actuator 1 adjustment.

Fig. 5 is an oblique side and top view of an actuator 1 with a positioning member 9 connected to a separate screenless reader device 19a. The identification data of the actuator 1 and the position information of the actuator 12 are transmitted from the reader device 19a 30 via a transmission cable 20 to a smart device 21, such as a smart phone.

The intelligent device 21 may have various applications, such as applications 22a indicating the position of the actuating means 12 of the actuators 1 according to the example. Also shown in Figure 5 is a wireless version 19b of a screenless reader device including, inter alia, a radio transmitter such as a bluetooth or WLAN transmitter for transmitting read information.

20165274 prh 10 -04- 2019

Fig. 6 is an oblique side and top view of actuator 1 in a control situation where user 23 rotates the handwheel 5 clockwise 24 and wherein a screenless reader 19b wirelessly transmits 25 real-time actuator 1 5 control state data to base station 26 and user 23 23 users to make fine adjustments.

The information system, reader device 16, or smart device 21 may include predefined control solutions and profiles, and provide guidance for adjusting profile actuators 1 to user 23. An example of a paper machine headbox 2 lip opening arrangement may include, but is not limited to:

- Reset mode: The first operation to be performed before the headbox 2 is activated. In this connection, the object 4, such as the lip opening adjustment list, is straightened and the zero position adjustment and adjustment are made. Zero values remain in the system memory per actuator. They are then either in the memory of the information system, the reader device 16 or the smart device 21, or, for example, all of them. In the future, these 25 data will serve as the basis for the profile.

- Adjustment Mode: Any actuator 1 can be adjusted and the last position of actuator 12 actuator 12 remains in the memory of the reader device 16, 19a, 19b. The reader device 16, 19a, 19b forms an actuator profile from these values. The profile can be stored in system memory for later use.

- Profile Mode: Here the reader device 16, 19a, 19b is pre-fed with the desired deflection profile of the object 4, such as the lip opening adjustment list. The profile can be adjusted without accidentally exceeding the deflection limits. For this will take care of taipumarajavahti. The display device 17 of the reader device 16 and / or the display device of the intelligent device 21 guides the user 23 during the adjustment, for example, to the actuator 1 in turn and the direction of the control and the magnitude of the movement.

- Actuator profile display: The actuator profile can be transferred to a computer display, for example, and vice versa, the profile can be transferred to the reader device 16 and / or smart device 21 display.

- Detection of position deviations: If the position of the actuator 12 actuator 12 has been displaced spontaneously, the user 23 is alerted by the information system, the reader device 16 or the intelligent device 21.

As previously mentioned, in control solutions, such as adjusting the lip opening of a paper machine headbox 2, which has a plurality of identical, parallel actuators 1, it is advantageous to remove the expensive metering solutions from the individual actuators 1 and convert them into one common reader solution 16, 19a, According to the idea of the invention, the actuator 1 is fitted with a very inexpensive and reliable permanent magnet, which is in close communication with the actuator control element 12, such as the output shaft, thereby reliably and accurately indicating the position of the actuator on the separate reader and actuator.

16,

19a,

19b, with one and the same reader device 16,

19a,

19b reads the actuator20165274 prh 10 -04-20199 of all actuators 1 and the position 4 of the object connected to the actuators 1, i.e. the distance from the actuator 1 at each actuator 1.

The actuator 1 according to the invention can also be adapted to function as a single measuring and regulating device. Thus, the pin portion 12b of the actuator 12 shown axially from the body 10 of the actuator 1 in Figure 2 serves as a mounting base for either the adjuster rod 3 or the like, as shown above, or said pin portion 12b functions as a customized measuring device The measurement result is then obtained either separately

20165274 prh 10 -04-20199 to the display and memory of the reader device 16, or via the display reader device 19a, 19b without display to the display and memory of a smart device 21 such as a smartphone, tablet or computer. The reader device 16, 19a, 19b may be detached, but preferably it is either fixed or adapted to remain independently attached to the body 10 of the measuring and regulating device. Otherwise, the structure of the measuring and regulating device corresponds to the structure of the actuator 1 described above.

It will be apparent to one skilled in the art that the invention is not limited to the examples set forth above, but may vary within the scope of the following claims. Thus, for example, some process steps may be in a different order from that described above, and in addition, some process steps may be absent and some process steps not shown may be present. In addition, some method steps may include more or less functions than those described above.

It is still obvious to one skilled in the art that the solution of the invention can be applied to many other objects than those described above. The solution according to the invention can be effectively and advantageously applied, inter alia, in control cases having a plurality of identical, rin25 infectious control devices. An example is a rotary control device, such as a device for adjusting the mass dilution of a headbox in a paper machine.

It is also clear to those skilled in the art that new software solutions can be developed for the solution of the invention that utilize actuator history data and real-time control position information.

Furthermore, it will also be clear to one skilled in the art that the design of the actuator may differ from the above. For example, a separate actuator internal actuator such as the one described above may not be required if the permanent magnet acting as the actuator is mounted, for example, directly on the upper end of the lip adjusting rod. In this case, the adjusting element is, for example, a threaded adjusting shaft mounted on the impeller.

Claims (16)

A method for adjusting the position of an object (4) on the body (10) and adjusting means (5, 5 6a, 6b, 11, 12), wherein the position of the object (4) is adjusted by a plurality of parallel and stationary actuators (1), each of which is individually mechanically connected to the object (4) by its position of motion. adjustable control 10 via means (12), and wherein to determine the position of the target (4), the position of the adjusting member (12) of each actuator (1) relative to the actuator (1) body (10) is read through the actuator (1) body (10) the position of the actuator (12) of each actuator (1) relative to the actuator (1) body 15 (10) is read to the actuators by means of a common reading device (16, 19a, 19b) separate from the actuator (1). Method according to claim 1, characterized in that the position of the actuating means (12) of each actuator (1) 20 with respect to the body (10) of the device (1) is read non-contact by the reader device (16, 19a, 19b) by locating the reader device (16, 19a, 19b) in exactly defined position relative to the body (10) of the actuator (1). 25 Method according to claim 1 or 2, characterized in that the position of the actuator (12) of the actuator (1) relative to the body (10) of the actuator (1) is determined by a magnetic field measured by a position reader (14) in the reader device (16, 19a, 19b). . Method according to claim 1, 2 or 3, characterized in that the unique identification information (7) of the actuator (1) attached to the actuator (1), such as an NFC and / or RFID identifier, is read by the reader device (16, 19a, 19b). , and 35 that the identification information and the position information of the adjusting means (12) are transmitted as a pair for further processing. 20165274 prh 10 -04- 2019 Method according to one of the preceding claims, characterized in that the identification data of the actuator (1) and the position information of the actuator (12) transmitted in pairs are transmitted from the reader device (19a, 19b) to an application (22a, 22b) (20) or wirelessly (25). Method according to one of the preceding claims, characterized in that the reader device (16) or The 10 le smart device (21) has pre-stored machine control profiles, i.e. the required control position of the actuator (12) for each actuator (1), and that in the control situation the reader device (16) application or smart device application (22a, 22b) display (17) or 15 on the display of the intelligent device (21) to make the correct adjustment using the adjusting wheel (5) of the actuator (1). A method according to any one of the preceding claims, characterized in that 20, the actuator (19b) is placed on the positioning member (9) of each actuator (1) used, and the user's (23) intelligent device (21) or information system is automatically informed if the actuating position of any actuator (1) 25 (23) is guided by the smart device (21) or the information system to correct the actuator (1) adjustment position. Apparatus for adjusting the position of an object (4) on the body (10) and adjusting means (5, 6a, 6b, 11, 12) with an actuator (1), wherein the position of the object (4) is arranged to be adjusted by a plurality of parallel and stationary actuators (1) each mechanically connected to the object (4). in its movement path, it is positioned via an adjustable actuator (12), and each actuator (1) has a station element (8) indicating the position of the actuator (12) relative to the actuator body (10), characterized in that the apparatus comprises 20165274 prh 10 -04-20199 for determining and reading the position of each station element (8) of the second actuator (16, 19a, 19b). Apparatus according to claim 8, characterized in that: 5, that the station element (8) is arranged to move with the adjusting element (12) in the same direction, at the same speed and at the same distance as the adjusting element (12), and that the station element (8) is a permanent magnet. Apparatus according to Claim 8 or 9, characterized in that the actuator (1) has a positioning member (9) and that the separate reader device (16, 19a, 19b) comprises at least a counter-member (18) exactly matching the positioning member (9) of the actuator (1). ) and a tag reader (13) such as NFC and / or An RFID reader, as well as a position reader (14) of a station element (8), such as a hall sensor, in which the position reader (14) is arranged to be read non-contact through the body (10) of the actuator (1). 20 Apparatus according to any one of claims 8 to 10, characterized in that the separate reader device (16) has a display (17) for providing the user (23) with identification data of the actuators (1), position information of the actuators (12) and actuation information. Apparatus according to one of the preceding claims 8 to 11, characterized in that the separate reader device (19a) has a connector for a transmission cable (20) arranged to transmit the identification data of the actuator (1) and the control element. 30 (12) for further processing. Apparatus according to any one of claims 8 to 12, characterized in that the separate reader device (19b) has a radio transmitter, such as a bluetooth transmitter or a WLAN transmitter. 35, arranged to transmit the identification data of the actuator (1) and the position information of the actuator (12) for further wireless processing. 20165274 prh 10 -04- 2019 Apparatus according to any one of claims 8 to 13, characterized in that the apparatus comprises an intelligent device (21), such as a tablet or a smartphone, in which a separate reader device (19a, 19b) is arranged to transmit actuators. 5 (1) identifying information and position information of the control means (12), and running on the intelligent device (21) a suitable application (22a, 22b) for setting, monitoring, monitoring and maintaining the adjustment of the object (4). A measuring and adjusting device comprising at least partially a hollow body (10) having an adjusting member (12) axially movable relative to the body (10), a threaded adjusting shaft (11) and an adjusting wheel (5) attached to the adjusting shaft (11), arranged to move the adjusting member (12) 15 in a linear motion through the adjusting axis (11), and which measuring and adjusting device has a station element (8) indicating the position of the adjusting element (12) with respect to the body (10), characterized in that the measuring and adjusting device comprises 16, 19a, 19b) for determining the exact position of the station element (8). Measuring and adjusting device according to Claim 15, characterized in that the station element (8) is arranged to move with the adjusting element (12) in the same direction, at the same speed and at the same distance as the adjusting element (12), and ) is a permanent magnet, and that the reader device (16, 19a, 19b) has a position reader (14) for the position element (8), such as a hall sensor, with the position reader (14) arranged to read the position of the position element (8) 10) through.