CS242205B1 - Device for measuring the amount of cut tobacco stored in a container - Google Patents

Abstract

The purpose of the invention is a device for remote measurement of the amount of tobacco stored in a container. The amount of stored tobacco is determined by measuring the electric current, which is the sum of the electric currents of the individual branches of the evaluation circuit, which are controlled by sensors installed at equal mutual distances and at the same mutual height along the effective length of the side wall of the container. By choosing the number of sensors, the accuracy of the measurement can be changed. The device according to the invention can also be used in industries processing similar fibrous material as cut tobacco.

Description

242205

BACKGROUND OF THE INVENTION The present invention relates to a device for measuring the amount of cut tobacco stored in a container. In the process of manufacturing a cigarette pack, the cut tobacco is stored in a stack of cut tobacco. The bottom of the hopper is a crawler. The container is filled with tobacco at the beginning of the container, the filled conveyor belt of the container is shifted gradually towards the back of the container during filling. The filled container is drained through the opening at the bottom of the container by moving the belt conveyor. A common method of detecting the amount of stored tobacco in a container is that the operator detects its amount visually through the glazing in the side walls of the container during production. Such a method of detecting the amount of stored cut tobacco in the container is disadvantageous in terms of estimation estimates and workloads when estimating it for immediate monitoring of stored tobacco, which is important to reassign the optimal manufacturing process.

The aforementioned drawbacks are eliminated by the device for measuring the amount of cut powder stored in a container according to the invention, the principle of which is the entire length of the active part-wall of the cut tobacco container and the same mutual installation height. sensors that indicate the filling of the container with tobacco at the appropriate location. The contacts of these sensors are connected in an evaluation circuit which is composed of individual partial parallel connected winds. Their number corresponds to the number of installed sensors. The sub-branch is made up of a single transistor in a connection with a common emitter, which is connected to the positive pole of the source. The base of the transistor is connected to the negative pole of the source via the resistor and the contact of the respective transducer. The transistor collector is connected through the respective adjustable resistor to the first measuring device terminal and to the common adjustable resistor, the other side of which is connected to the positive terminal of the source. The second measuring device terminal is connected to the negative pole of the source. An advantage of the device for measuring the amount of cut tobacco stored in the container according to the invention is that it allows automatic dial-up measurement of the instantaneous amount of tobacco stored in the container by measuring accuracy dependent on the number of sensors used.

In the accompanying drawings, there is an example of a device for measuring the amount of cut tobacco stored in a container using a plurality of sensors, in which FIG. 1 shows a schematic diagram of a cut container, FIG. 3 is a circuit diagram of an evaluation circuit.

Sensors 7 to 16 are installed on the cut tobacco container 1 at the same distance from the same side of the effective side wall portion of the container to indicate that the container 1 is filled with tobacco 5 at the appropriate location. 3 through the inlet opening 6 and emptied through the outlet opening 4 by the conveyor 2 movement. The sensors 7 to 16 together with their contacts 51 to 60 are connected in the evaluation circuit 18. The connection consists of ten transistors 31 to 40, ten fixed resistors 41 to 50, from eleven adjustable resistors 20 to 30, and a measuring device 19. The evaluation circuit is powered from a 17-way stabilized voltage source.

The function of the device for measuring the amount of cut tobacco stored in the inventive warehouse is as follows: Filling the container 1 with the cut tobacco 5 at the location of one of the installed sensors 7 to 16 causes the respective contact 51 to 60 to be activated. Turning on this contact will cause the current to flow through the respective resistor 41 and 50 and bring the respective resistor 31 to 40 to the on state. The current will flow through the transistor, the magnitude of which is set at an adjustable resistor of 21 to 30. to 16 indicating the filling of the respective containers 1 is measured by the size of the electric current, which is the sum of the electrical currents of the individual transistors 31 to 40. The total electrical current measured by the measuring device 19, which is calibrated in the filling percentages of the container 1 by the cut sheet 5 is a sum of currents from the individual switched transistors 31 to 40. The zero resistance of the meter 19 is set by the adjustable resistor 20. The number of sensors 7 to 16 is selectable according to the accuracy of the measurement of the material required. Ten sensing sites are considered in the above example, and the metering accuracy is 10%.

A device for measuring the amount of cut drug stored in a container according to the invention can also be used to measure other similar materials than cut tobacco stored in containers of a similar type.

Claims (1)

242205 ARTICLE A device for measuring the amount of cut powder stored in a container, characterized in that transducers are installed along the entire length of the active cut-off wall of the cut-sheet tray (5) at equal distances and relative to each other. 7 to 16) indicating the filling of the container (1) at the respective location, the contacts (51 to 60) of which are connected in the evaluation circuit (18), which is composed of individual sub-connected branches whose number of sensors installed (7 to 16), wherein the sub-branch is constituted by a single transistor of a resistor (31 to 40) in a common co-conductor connection that is connected to a positive source, the base of the transistor (31 to 40) being resistive to the resistors (41 to 50) and the contact (51-60) of the respective sensor (7-16) connected to the negative pole of the source, the transistor torque (31-40) is via the a short adjustable resistor (21 to 30) connected to one of the first terminals of the meter (19) and a common adjustable resistor (20), the other side of which is connected to the load pole of the source, the other terminal of the meter (19) being connected to the negative pole of the source. 3 sheets of drawings