A device for dosing bulk material, in particular plastic granules, for machines that process plastic granules, in particular for injection molding machines. The invention provides a bulk material feed (1), a material hopper (3) formed by multiple, preferably four, individually removable material hopper containers (2) and arranged under the bulk material feed (1) and ending in a dosing base device (4), and, optionally, a weighing container with a scale in the dosing base device (4). The individual material hopper containers (2) are arranged on a support spider (5) and the support spider (5) is formed by support spider plates (11) arranged vertically and perpendicular to one another. The support spider is mounted on the housing of the dosing base device (4). The support spider (5) has a height (h), which is at least the height (h.sub.1) of the material hopper container (2), which extends over the dosing base device (4), and corresponds to the immersion depth (h.sub.2) of the material hopper (3) into the dosing base device (4). A material hopper cover (6) is provided on the end of the support spider (5) facing away from the dosing base device (4).

The object of the present invention is to provide a novel conveying device with which it is possible to easily adjust a conveying amount of articles in a trough using a restricting plate, and a combination weighing apparatus having the conveying device.

A conveying device to convey articles in a trough has a restricting plate to restrict a flow of the articles in the trough and the angle at which the restricting plate faces the articles is variable. With this configuration, there is no need to prepare a plurality of restricting plates that have different shapes and materials or to exchange such a plurality of restricting plates in the same manner as in a conventional device because the conveying amount in the trough can be adjusted merely by varying the angle at which the restricting plate faces the articles.

A sub-quantity scale and method for transferring a sub-quantity are provided. The scale includes a product feeding device, a product distributing device and a plurality of sub-quantity storage containers for transferring the sub-quantities to a weighing device, from which the sub-quantities pass into a packaging container. The product is fed into the sub-quantity storage containers by using vibration conveyor devices, each of which has a conveying channel and is assigned to one of the sub-quantity storage containers. A nozzle device subjects a conveying surface of the conveying channel to an air flow oriented in the conveying direction. The nozzle device is arranged in a transfer area between the product distributing device and the conveying channel.

A dispersing tray is mounted to a combination scale at a top part thereof to disperse and deliver supplied articles outwardly. The dispersing tray has, on a back surface thereof, a liquid stopper that prevents outward movement of a liquid.

A method is provided for measuring an energy efficiency of a quantitative weighing device. A data measurement part is formed by: recording a control time of fast charging, recording a control time of slow charging, recording a comparison prohibition time, and recording weighing data. A current device reliability parameter, a fast charging feed flow, and a slow charging feed flow are calculated, based on the comparison prohibition time and the control time of slow charging. The fastest feed time under a requirement of a target reliability parameter is calculated as the difference between the target reliability parameter and the calculated control reliability parameter. By using the method, application data, such as capability of a quantitative control device and energy efficiency of the quantitative weighing device, can be intuitively obtained. This facilitates commissioning, maintenance, and use of the quantitative weighing control device.

A conveyance apparatus (1) according to an embodiment includes: a trough (11) that receives an article from an outside and conveys the article in a conveyance direction from upstream to downstream; and a drive unit (20) that drives the trough. The trough includes a plurality of protrusions (92) on a front surface (91) on which the article is conveyed, and an opening (91A) passing from the front surface to a back surface (93) is formed at an end (92E) on a downstream side of the plurality of protrusions.

The invention relates to a device for dispensing powder, comprising at least one storage tank (1) provided with a cap (2) comprising a flow orifice (3) for the powder. According to the invention, the device comprises a shutter (8) provided with an aperture (9) and fitted so as to be able to move relative to the cap between a shut position preventing the powder from flowing and an open position allowing the powder to flow through the aperture of the shutter, a channel (12) passing through the shutter so as to extend on either side of the aperture of the shutter in a direction that is substantially transverse to the flow of the powder, and means for creating a relative motion between the cap and the shutter in order to move the shutter between its two positions, said means being connected to a control unit (20) that is connected to contactless means for detecting the flow of the powder, the detecting means comprising, at a first end of the channel of the shutter, at least one emitter (21) emitting a wave into the channel and, at a second end of the channel, at least one receiver (22) for detecting the emitted wave. The invention also relates to a workstation comprising such a device for dispensing powder.

This disclosure provides a combination scale including a dispersing feeder, linear feeders, a plurality of hoppers, and a collector. The dispersing feeder and linear feeders are respectively disposed in upper parts of a center base of the combination scale to disperse and deliver outwardly articles received therein. The hoppers are removably mountable to an outer periphery of the center base to hold and discharge the articles. The collector collects the articles discharged from the hoppers on a central side of the center base and discharges the collected articles. The collector constitutes a collecting and discharging channel for the articles to be collected and discharged. The combination scale further includes a shielding tool configured to block liquid that drops from the center base downward into the collecting and discharging channel.

A weighing apparatus for a filling line for filling containers of pharmaceutical, medical, food products and the like includes a weighing unit and a suction unit designed to generate a suction air flow directed and adjusted in such a way as to affect in a controllable manner the value of a weight detected by the weighing unit.

A weighing device for a multi-head weighing machine and comprising a load cell configured to generate a first signal representative of the weight force exerted by a bucket, and at least one accelerometer configured to generate a second signal representative of the vibrations induced on the bucket at least during a use configuration of the multi-head weighing machine. Furthermore, the weighing device comprises a control unit configured to compare and process the first signal and the second signal and to generate a rectified signal representative of the weight of at least one product contained in the bucket.