SU1610306A1 - Setting device for dial-indicating scales - Google Patents

Abstract

The invention relates to systems for automating the dosing process on multi-band dial scales with a cumulative switching of ranges and allows to increase the efficiency of operation by taking into account the weight balance in the previous measurement range when switching to a lower range. When dispensing, arrow 2 moves from zero sensor 4 to dose sensor 5, after which disk 1 rotates to align sensor 4 with flag 7. When the angle between dose sensor 5 and end-of-range sensor 12 becomes less than angle 6, turning 13 will turn on sensor 12 , the disk will turn in the opposite direction until the sensor 8 coincides with the flag 7, and the lower measuring range of the balance is turned on. 8 il.

Description

Phi2.1

The invention relates to automation and can be used in process control systems, in particular, to automate the dosing process on multi-band dial scales with cumulative range switching with a cycle type control system.

The purpose of the invention is to improve the efficiency of the device by taking into account the weight balance in the previous measurement range when switching to a lower range on multi-band dial scales with cumulative range switching.

FIG. 1 is a schematic diagram of a driver; in fig. 2-8 show the relative positions of the arrow of the balance and the driver disk at different phases of the dosing process, namely: in FIG. 2 — before starting dosing when combining the zero sensor with the flag of the scale; in fig. 3 - at the end of the dose, combining the dose sensor with the arrow flag; in fig. 4 — before the start of the next dosing cycle when combining the zero sensor with the scale arrow flag; in fig. 5 - at the end of the issuance of the last dose in this range of measurement of the scales; in fig. 6 - when the flag of the sensor dial of the end of the measuring range is turned on; in fig. 7 - when the weights of the weight balance sensor are on; in FIG. 8, when the measurement range of the balance is switched to a lower one.

The driver contains a pivot fastening structure 1, for example, a master disk with an individual reversing drive, located coaxially with arrow 2 of the dial 3 weights, located on the disk on the same radius zero sensor 4 and dose sensor 5, the angle 6 of which is set on the dial relative to the zero sensor dose, located on the dial arrow signal element (checkbox) 7, place of mouth, whose mouths correspond to the radius of the location of the zero and dose sensors. Sensor Including weight balance, located on the disk away from the zero sensor, opposite to the dose sensor at angle 9 on the dial of the balance relative to the zero sensor, equal to the angle of the dead zone between thresholds 11 and 11 of the beginning and end of the measuring range of the scales Accordingly, end 12 sensor the measurement range, set at the position of the end of the measurement range, the signal element (flares) 13 of the end of the measurement range, located on

a disk at the date position, a dose dose at a radius corresponding to the radius of the sensor for the end of the measuring range.

The driver operates as follows.

Before the start of metering, the master dial 1 rotates according to the control system signal until the zero sensor 4 is combined with the flag 7 of the arrow 2 of the dial (Fig. 2).

When dispensing, arrow 2 moves from the zero sensor 4 to the dose sensor 5, and when they are combined, the dispensing stops (Fig. 3), after which the disk 1 rotates in the direction of the previous movement

arrows 2 until sensor 4 aligns with flag 7 (Fig; 4). This process of alternating metering and rotation of the driver disc continues until angle 14 between the dose sensor 5 and the end sensor 12

range will not be less than the angle 6 between the sensors 4 and 5, corresponding to the dose (Fig. 5). 8 in this case, when turning the disc 1 in the direction of the previous movement of the arrow 2, the flag 13 on the disc 1

will turn on the sensor 12 for the end of the measurement range (Fig. 6), turn the disk in this direction and stop turning the disk in the opposite direction until the weight balance sensor 8 is aligned with the flag

7 arrows 2 (Fig. 7). After that, the lower measuring range of the weights is turned on, as a result of which the arrow 2 moves to the zone of the beginning of the measuring range of the weights (Fig. 8). Further dosing may be carried out as previously described.

Thus, in the case of applying a master device on a multi-band scale with cumulative range switching, it is not necessary

manual compensation of the weight balance of the previous range upon transition to the lower measurement range and complete automation of the dosing process is achieved.

Claims (1)

Invention Formula A setting device for dial weights, containing a master disk with an individual reversible drive, mounted coaxially with the dial face of the balance, a zero sensor and a dose sensor installed on the master disk, and a signal element placed on the arrow on the length of the radius is the same as the sensors, characterized in that, in order to increase work efficiency by taking into account the weight balance in the previous measurement range when switching to a lower range on a multi-band scale with cumulative switching of ranges, mounted on the dial at the point of the end of the measurement range f and the signal flag of the end of the measurement range, installed on the master dial at the same radius with the sensor of the end of the measurement range, while the signal fl right side and the end of range sensor lie on one line of radius, weight metering sensor located on the master disk, on the opposite side of the zero sensor relative to the dose sensor, with the angle formed by the weight balance sensor, the axis of rotation and the zero sensor equal to the angle of the dead zone between the positions of the beginning and end of the range measurements. Phage. 2 FIG. FIG. four FIG. five 7 13 FIG. 6 Phage. 6