A combination weighing device includes: a storage unit that stores time-series measurement values sequentially acquired by the measurement hoppers; a time measurement unit that measures an elapsed time from a timing corresponding to supply of the products to the measurement hoppers until a timing at which the time-series measurement values enter a region considered to be stabilized when the time-series measurement values stored in the storage unit converge to the region considered to be stabilized as a stabilization time until the measurement values become stabilized; and a selection unit that acquires the stabilization times by the time measurement unit over a plurality of cycles and can select a recommended stabilization time that is the stabilization time in which a predetermined measurement accuracy can be maintained based on a standard deviation of the acquired stabilization times for the plurality of cycles.

A hopper attachment structure is provided that allows a hopper to be removably attached to a driving unit. The hopper has an outlet in a body thereof and a gate driven to open and close by the driving unit. The outlet of the hopper is allowed to open and close with the gate. The driving unit has an engaging protrusion and a support protrusion. The hopper further has an attachment bracket extending from the body. The attachment bracket has a hook portion engageable with the engaging protrusion and also has a contact portion allowed to contact the support protrusion. The hopper is attachable to the driving unit by having the hook portion of the attachment bracket engaged with the engaging protrusion of the driving unit and by further having the contact portion of the attachment bracket supportably contact the support protrusion of the driving unit.

A combination scale is provided that includes a plurality of weighing conveyers arranged in a row, a collection conveyer, and a protective cover. The weighing conveyers transports items to be weighed that are manually supplied. The collection conveyer transports the items discharged from the weighing conveyers along a direction of arrangement of the weighing conveyers. The protective cover is disposed on an outer side of transport-starting ends in a direction of transport of the weighing conveyers. The protective cover extends in the direction of arrangement of the weighing conveyers. The protective cover is supported in a manner that is rotatable to and from two positions; a closing position at which the protective cover faces the transport-starting ends in the direction of transport, and an opening position at which the protective cover is rotated outward.

A combination scale is provided that includes a plurality of weighing conveyers arranged in a row, a collection conveyer, and a protective cover. The weighing conveyers transports items to be weighed that are manually supplied. The collection conveyer transports the items discharged from the weighing conveyers along a direction of arrangement of the weighing conveyers. The protective cover is disposed on an outer side of transport-starting ends in a direction of transport of the weighing conveyers. The protective cover extends in the direction of arrangement of the weighing conveyers. The protective cover is supported in a manner that is rotatable to and from two positions; a closing position at which the protective cover faces the transport-starting ends in the direction of transport, and an opening position at which the protective cover is rotated outward.

A conveyer for transport is provided that is equipped with a driving roller disposed on one side in a direction of transport, a driven roller disposed on the other side in the direction of transport, a conveyer frame to which the driving roller and the driven roller are mountable, and a conveyer belt wound around the driving roller and the driven roller. The conveyer frame includes a pair of side plates that axially supports both ends of the driving roller and of the driven roller, and a top plate that slides along and contacts an inner peripheral surface of the conveyer belt. The top plate has a plurality of openings.

A conveyer for transport is provided that is equipped with a driving roller disposed on one side in a direction of transport, a driven roller disposed on the other side in the direction of transport, a conveyer frame to which the driving roller and the driven roller are mountable, and a conveyer belt wound around the driving roller and the driven roller. The conveyer frame includes a pair of side plates that axially supports both ends of the driving roller and of the driven roller, and a top plate that slides along and contacts an inner peripheral surface of the conveyer belt. The top plate has a plurality of openings.

An assembly for detection of foreign bodies in a multihead weigher includes an image recorder and a lighting module and an image evaluation module. The multihead weigher includes weighing containers for filling with bulk material, a selection of the bulk material being emptiable into chutes combined in the shape of a funnel upon arrival of a trigger signal. The image recorder records an image series, and the lighting module and the image evaluation module output a signal upon detection of a foreign body in the image series. The image recorder includes one or more cameras for optical capturing of the funnel, the one or more cameras being arranged inside of or above the funnel and being set up to capture one or more sections of an interior surface of the funnel between two horizontal planes.

An assembly for detection of foreign bodies in a multihead weigher includes an image recorder and a lighting module and an image evaluation module. The multihead weigher includes weighing containers for filling with bulk material, a selection of the bulk material being emptiable into chutes combined in the shape of a funnel upon arrival of a trigger signal. The image recorder records an image series, and the lighting module and the image evaluation module output a signal upon detection of a foreign body in the image series. The image recorder includes one or more cameras for optical capturing of the funnel, the one or more cameras being arranged inside of or above the funnel and being set up to capture one or more sections of an interior surface of the funnel between two horizontal planes.

The invention discloses a multi-sensor-based mechanical measurement system, comprising a sensor, a digital-to-analog conversion unit and a calculation unit; The said sensor include a plurality of sensors, and each of the sensors is connected to the said digital-to-analog conversion unit through a respective analog input channel; The said digital-to-analog conversion unit converts the data and transmits it to the calculation unit; The said computing unit performs a primary calibration on the said sensor corresponding to each of the said analog input channels according to the signal transmitted by each of the analog input channels one by one respectively, and performs secondary calibration according to the primary calibration results of all the said sensors. The invention has the advantages of high precision, high stability, high reliability, low error, low cost, easy maintenance, low failure rate, no need for pairing, strong adaptability to environment and location, light and compact, flexible expansion and the like.

The invention discloses a multi-sensor-based mechanical measurement system, comprising a sensor, a digital-to-analog conversion unit and a calculation unit; The said sensor include a plurality of sensors, and each of the sensors is connected to the said digital-to-analog conversion unit through a respective analog input channel; The said digital-to-analog conversion unit converts the data and transmits it to the calculation unit; The said computing unit performs a primary calibration on the said sensor corresponding to each of the said analog input channels according to the signal transmitted by each of the analog input channels one by one respectively, and performs secondary calibration according to the primary calibration results of all the said sensors. The invention has the advantages of high precision, high stability, high reliability, low error, low cost, easy maintenance, low failure rate, no need for pairing, strong adaptability to environment and location, light and compact, flexible expansion and the like.