A method and system for correcting mass flow rate measurements relating to a conveyor used to move a stream of first component material portions to and through a mixing station in which a second component material is dispensed in a predetermined mass percentage of the mass of the first component material portions. The correction of the measurements is adapted to correct for inaccuracies that arise in the measurements due to, for example, differences in the first component material portions properties, differences in the second component material properties, environmental conditions, drift of electronic instruments, and changing conditions that occur during extended use of an upstream conveyor that delivers first component material portions to the mixing station.

A combination weighing apparatus includes a retaining hopper that retains an article and supplies the retained article onto a transport path. The retaining hopper has a coupling portion adapted to be inserted in along the support rails and pulled off from support rails disposed in a pair. The retaining hopper is thus supportable by the support rails and is readily mounted to and dismounted from the apparatus without using any tool for cleaning and other purposes.

A combination weighing apparatus includes a retaining hopper that retains an article and supplies the retained article onto a transport path. The retaining hopper has a coupling portion adapted to be inserted in along the support rails and pulled off from support rails disposed in a pair. The retaining hopper is thus supportable by the support rails and is readily mounted to and dismounted from the apparatus without using any tool for cleaning and other purposes.

A combination weighing apparatus 1 includes a pool hopper 5 and a support body 11. An attached portion 30 of the support body 11 has first defining portions 34 and 39 and second defining portions 35 and 40, support portions 36 and 41 capable of supporting a first locking member 24, and guide portions 37 and 42 disposed on the track of a second locking member 25 at a time when the pool hopper 5 is swung to the support body 11 side about the first locking member 24 with the first locking member 24 supported by the support portions 36 and 41 and guiding the second locking member 25 such that the second locking member 25 moves to the lower side in a height direction with respect to a position on the track and is positioned in the second defining portions 35 and 40.

A combination weighing apparatus 1 includes a pool hopper 5 and a support body 11. An attached portion 30 of the support body 11 has first defining portions 34 and 39 and second defining portions 35 and 40, support portions 36 and 41 capable of supporting a first locking member 24, and guide portions 37 and 42 disposed on the track of a second locking member 25 at a time when the pool hopper 5 is swung to the support body 11 side about the first locking member 24 with the first locking member 24 supported by the support portions 36 and 41 and guiding the second locking member 25 such that the second locking member 25 moves to the lower side in a height direction with respect to a position on the track and is positioned in the second defining portions 35 and 40.

A combination weighing apparatus (1) according to one embodiment includes: a plurality of hoppers (4) to (6) that receives articles inputted from an outside, temporarily stores the articles, and discharges the stored articles downstream; a discharge chute (9) that receives the articles discharged from the hoppers and causes the articles to slide downstream; an acquisition unit (50) that acquires weight values of the articles stored in each hopper; and a control unit (30) that performs combination calculation on the basis of the weight values acquired by the acquisition unit and discharges the articles from a hopper determined by the combination calculation to the discharge chute. The discharge chute includes: a first slide surface (91) having a plurality of openings (91A); and a second slide surface (92) that covers a part of the opening and is disposed at a position on an inner side of the discharge chute with respect to the first slide surface. The second slide surface is formed continuously with the first slide surface on an upstream side, a left side, and a right side of the opening.

A combination weighing apparatus (1) according to one embodiment includes: a plurality of hoppers (4) to (6) that receives articles inputted from an outside, temporarily stores the articles, and discharges the stored articles downstream; a discharge chute (9) that receives the articles discharged from the hoppers and causes the articles to slide downstream; an acquisition unit (50) that acquires weight values of the articles stored in each hopper; and a control unit (30) that performs combination calculation on the basis of the weight values acquired by the acquisition unit and discharges the articles from a hopper determined by the combination calculation to the discharge chute. The discharge chute includes: a first slide surface (91) having a plurality of openings (91A); and a second slide surface (92) that covers a part of the opening and is disposed at a position on an inner side of the discharge chute with respect to the first slide surface. The second slide surface is formed continuously with the first slide surface on an upstream side, a left side, and a right side of the opening.

In a combination weighing apparatus (1), a driver (10) is attached to a main body (100) by being inserted into an opening (100A) provided in a lateral surface of the main body, in a direction from an outer side (O) toward an inner side (I) of the main body, a first motor (14), a second motor (13), and a load cell (12) are arranged on the inner side of the main body in relation to a base (11), and in a state where the driver is attached to the main body, at least a portion of the first motor, the second motor, and the load cell is located further on a lower side (L) than a lower edge (E1) of the opening.

In a combination weighing apparatus (1), a driver (10) is attached to a main body (100) by being inserted into an opening (100A) provided in a lateral surface of the main body, in a direction from an outer side (O) toward an inner side (I) of the main body, a first motor (14), a second motor (13), and a load cell (12) are arranged on the inner side of the main body in relation to a base (11), and in a state where the driver is attached to the main body, at least a portion of the first motor, the second motor, and the load cell is located further on a lower side (L) than a lower edge (E1) of the opening.

A linear feeder is provided that vibrates a trough to transport articles on the trough. The trough has a guiding protrusion at an intermediate position on a bottom surface of a transport path in a direction of its width. The guiding protrusion is progressively greater in lateral width in a direction of transport of the articles, and transport passages progressively smaller in width are accordingly formed at sides of the guiding protrusion.