초록 ▼

A dynamic scale has multiple weighing units, each equipped with a weighing cell and a weighing pan, the weighing pan lying in an upper plane and the weighing cell between a lower plane spaced from the upper plane in the direction of gravity. A transport device has a motor encoder and sensors, with t

A dynamic scale has multiple weighing units, each equipped with a weighing cell and a weighing pan, the weighing pan lying in an upper plane and the weighing cell between a lower plane spaced from the upper plane in the direction of gravity. A transport device has a motor encoder and sensors, with the encoder and sensors being electrically connected with the inputs of a control unit. The multiple weighing units are serially adjacent in a transport path, with simultaneous cascaded arrangement of the weighing cells in the direction of gravity. The control unit simultaneously starts the weighing processes in all weighing cells in a dynamic weighing mode and controls a transport motor depending on signals of the sensors and the encoder and controls the dynamic scale depending on signals from the weighing cells.

대표청구항 ▼

1. A dynamic scale comprising: a plurality of weighing units, wherein each of the weighing units is equipped at least with a weighing cell and with a weighing pan, wherein the weighing pan lies in an upper plane and the weighing cell is arranged between the lower plane and a lower plane removed from

1. A dynamic scale comprising: a plurality of weighing units, wherein each of the weighing units is equipped at least with a weighing cell and with a weighing pan, wherein the weighing pan lies in an upper plane and the weighing cell is arranged between the lower plane and a lower plane removed from the upper plane in the direction of gravity;a plurality of sensors;a transport device for transport of a weighed good in a transport direction during weighing, said transport device comprising a motor that drives the transport device and an encoder; a control unit comprising inputs to which the sensors and the encoder are respectively electrically connected and comprising an output to which the motor is electrically connected;a first weighing unit and at least one second weighing unit comprising an arrangement of a second weighing pan serially adjacent in the transport path with respect to a first weighing pan with a simultaneous functionally cascaded arrangement of the weighing cells in the direction of gravity, the at least one second weighing unit is attached with the lower level situated in an x/z reference plane; andsaid control unit being configured to completely, simultaneously start the weighing processes in all weighing cells in a dynamic weighing mode, to control the motors depending on signals of the sensors and of the encoder to determine and regulate the transport velocity, and to evaluate the weight measurements, and thereby control the dynamic scale depending on the signals of the weighing cells. 2. A dynamic scale according to claim 1, wherein the weighing pan of an n-th weighing unit in the transport path is arranged at the last position in the transport direction z, and in that a weighing cell associated with the last weighing pan arranged in the transport path is mechanically firmly connected via an attachment block with a floor plate of the dynamic scale, wherein the floor plate is arranged lying in the x/z reference plane. 3. A dynamic scale according to claim 1, wherein the first weighing unit is configured for faster measurement of a smaller weight of the weighed good than the at least one second weighing unit. 4. A dynamic scale according to claim 1, comprising a third weighing unit and wherein the transport device of the first weighing unit has a transport belt, and a transport device of the third weighing unit has a transport device belt. 5. A dynamic scale according to claim 4, comprising a fourth sensor arranged near a downstream end of the transport device of the weighing pan of the third weighing unit and in that the control unit is connected at its inputs with the first sensor via a line for a signal; with the second sensor via a line for a signal; with the third sensor via a line for a signal; with the fourth sensor via a line for a signal; and via lines for the signals with the encoder of the transport device of the weighing pan of the first weighing unit and with the encoder of the transport device of the weighing pan of the third weighing unit; as well as at its outputs via lines for the signals with a first motor of the transport device of the weighing pan of the first weighing unit and with a third motor of the transport device of the weighing pan of the third weighing unit; and is electrically connected with a third motor of the transport device of the weighing pan of the third weighing unit. 6. A dynamic scale according to claim 4, wherein measurement results of the third weighing cell are used for a plausibility check of the results of the second weighing cell. 7. A dynamic scale according to claim 1, wherein the transport device of the first weighing unit has a transport belt, and the transport device of the second weighing unit has a transport belt. 8. A dynamic scale according to claim 7, wherein the control unit is electrically connected at the inputs of the first sensor via a line for a signal; with the second sensor via a line for a signal; with the third sensor via a line for a signal; and with the encoder of the transport device of the weighing pan of the first weighing unit and with the encoder of the transport device of the weighing pan of the second weighing unit via lines for the signals; and is electrically connected at the outputs with a first motor of the transport device of the weighing pan of the first weighing unit and with a second motor of the transport device of the weighing pan of the second weighing unit via lines for the signals. 9. A dynamic scale according to claim 1, wherein the weighing pans of the weighing units are shortened and adjacent to one another in the transport device and are arranged in the same upper level; at least one first weighing pan of the weighing pans adjacent to one another has the transport device for weighed goods; the weighing cells of each of the weighing units are arranged cascaded in the direction of gravity such that the weight of the weighed good, the total weight of the first weighing unit and the weight of at least one second weighing pan load the second weighing cell of the at least one second weighing unit, wherein the first weighing unit comprises the first weighing pan and the associated transport device; and in that the first weighing pan of the first weighing unit is arranged before the second weighing pan of the second weighing unit in the transport direction; the first sensor is arranged upstream of the transport device of the first weighing pan; the second sensor is arranged downstream of the transport device of the first weighing pan; and a third sensor is arranged near the downstream end of the transport device of the second weighing pan; and in that the control unit is programmed to activate a motor of the transport device of at least one first weighing unit upon arrival of a start signal,to start a plurality of weighing processes in a dynamic weighing mode when the first sensor signals an arrival of the leading edge of a supplied weighed good,when the second sensor signals an arrival of the leading edge of a supplied weighed good, to check whether the electronics of the connected weighing cell of the first weighing unit deliver or have not yet delivered a stable signal, wherein given a stable signal multiple measurement values are present for a measurement curve and the measurement curve has at least two inflection points and two reversal points after a rising portion, with which measurement curve the weight measurement can be successfully implemented,at least one motor with which the weighed good is transported further in the transport direction z on the weighing pan of the second weighing unit, andgiven a successful weight measurement, to induce an input/output unit of the common control unit to output a corresponding signal to an automatic feed station preceding the first weighing unit to supply a subsequent good being weighed to the weighing pan of the first weighing unit, orotherwise, to continue the weighing process with the weighing cell of the last used second weighing unit until the third sensor signals an arrival of the leading edge of a supplied weighed good,upon arrival of the leading edge of a supplied weighed good at the end of the transport device of the second weighing pan, to check whether the electronics of the connected weighing cell of the second weighing unit deliver or have not yet delivered a stable signal, andeither to end the weight measurement successfully with the weighing cell of the second weighing unit, wherein the electronics of the connected weighing cell of the second weighing unit deliver a stable signal, orotherwise, to produce a switch of the dynamic scale from the dynamic weighing mode to a semi-dynamic weighing mode, wherein in the semi-dynamic weighing mode the at least one motor is controlled so that the transport of the weighed good is halted, or the weighed good is transported back to at least the last used weighing pan and is then weighed. 10. A dynamic scale according to claim 1, wherein measurement results of the second weighing cell are used for a plausibility check of results of the first weighing cell. 11. A dynamic scale according to claim 1, wherein the first weighing cell and the at least one second weighing cell are operated with a different preload; a first circuit board is mounted at a support that accepts the second weighing pan and the transport device installed on this, which first circuit board is concurrently weighed only by the second weighing cell; the first circuit board is mounted at an installation point which, due to said installation point, allows short electrical connections to control the first motor and to receive the measurement signals from the first weighing cell and/or allows a wireless connection. 12. Method to operate a dynamic scale, with a plurality of weighing units, comprising: providing a first weighing unit and at least one second weighing unit, wherein each of the weighing units, individually has a respective weighing pan, a respective transport device, and a respective weighing cell, and mechanically connecting said weighing pan of said first weighing unit only to said weighing cell of said first weighing unit, and mechanically connecting both of said weighing pan of said first weighing unit and said weighing pan of said second weighing unit to said weighing cell of said second weighing unit;with the transport device of the first weighing unit, supplying a good being weighed to the weighing pan of the first weighing unit, simultaneously start the weight measurement in all weighing cells, and implement a cascaded weight measurement of the good being weighed during its transport in the transport direction z, wherein the weighing cells of all weighing units are participating from the start in the weight measurement;with the transport device of the first weighing unit, supplying a subsequent good being weighed to the weighing pan of the first weighing unit, and/or transporting the good being weighed further onto the weighing pan of the second weighing unit, with the respective transport device of the first and second weighing unit, for additional weigh measurement of the good being weighed during its transport in the transport direction z, depending on the signal of the weighing cell of the first weighing unit; andcontinuing to operate the dynamic scale depending on the signals of the weighing cells. 13. Method according to claim 12, comprising: activating the motor of the transport device of at least the first weighing unit via a common control unit upon arrival of a start signal;starting a plurality of weighing processes in a dynamic weighing mode via the control unit when a first sensor arranged at the upstream start of the first weighing unit signals an arrival of the leading edge of a supplied good being weighed;with a second sensor arranged at the downstream end of the first weighing unit signals an arrival of the leading edge of a supplied good being weighed, checking via the control unit whether the electronic measurement unit of the connected first weighing cell deliver or have not yet delivered a stable signal, wherein given a stable signal multiple measurement values are present for a measurement curve and the measurement curve has at least two inflection points and two reversal points after a rising portion, with which measurement curve the weight measurement can be successfully implemented;transporting the good being weighed further in the transport direction onto the weighing pan of the second weighing unit;emitting an output signal from the control unit via an input/output unit to an automatic feed station preceding the first weighing unit to supply a subsequent good being weighed to the first weighing unit; orgiven an unsuccessful weight measurement, continue the weighing process with the second weighing cell until a third sensor arranged at the downstream end of the second weighing unit signals an arrival of the leading edge of a supplied good being weighed; andupon arrival of the leading edge of a supplied good being weighed, checking whether the electronic measurement unit of the connected weighing cell of the second weighing unit delivers or has not yet delivered a stable signal; andestablishing that the weight measurement with the second weighing cell has successfully ended if the electronic measurement unit of the connected second weighing cell delivers a stable signal; orestablishing that the weight measurement with the second weighing cell has not successfully ended if the electronic measurement unit of the connected second weighing cell does not deliver a stable signal;switching the control unit from a dynamic weighing mode to a semi-dynamic weighing mode given an unsuccessful weight measurement, and activate the at least one motor via the control unit so that the transport of the weighed good is halted, or the weighed good is transported back to the last used weighing pan and is then weighed. 14. Method according to claim 12, comprising implementing a plausibility check of the measurement results of the weighing cells.