Ishida Co. Limited

Ishida Scales Mfg. Co., Ltd.

Yoshihiro Nakamura

Kazufumi Naito

Yukio Wakasa

Hiroaki Morinaka

Hiroyuki Konishi

Masayoshi Nakajima

Takashi Kimura

Fumitaka Tokuda

Shoko Tajiri

Shuji Murata

Kazuhiro Suhara

Tadaaki Matsuno

Hidekatsu Tokumaru

Osami Saito

Tadahiro Kitahashi

A weighing device includes a supply unit, a weighing unit, a stock unit, a discharge unit, a transfer unit, and a revolving mechanism. The supply unit supplies a target object to a container revolving in the weighing unit. The weighing unit weighs the container while revolving the same. The stock unit stocks a plurality of containers while holding the plurality of containers three-dimensionally and revolving them. The discharge unit discharges the target object from the container while revolving the container.

Weighing device for weighing target object in container, combination weighing device including the same, and weighing method

An electromagnetically driven transport device includes a transport unit for transporting an article M to be transported, an electromagnetically driven vibrating unit for vibrating the transport unit to transport the article, a frequency controlling unit , a time detecting unit and a frequency setting unit . The frequency controlling unit controls a driving frequency of a driving power source of the vibrating unit . The time detecting unit detects a time length T during which when the driving frequency is changed the driving current of the vibrating unit at each of frequency exceeds a reference current value. The frequency setting unit is operable to set an actual driving frequency based on the time length T detected by the time detecting unit

Electromagnetically driven transport device and weighing apparatus using the same

A heat sealer capable of providing a high sealing strength by appropriating a distribution of temperature at two sheet contact faces (,) includes a block (,) made of a metallic material having a high rigidity and operable to heat the resinous sheet (S) while pressing the latter. The block (,) is provided with heaters (,) therein and also with heat conducting members (,) each having an excellent heat conductive characteristic higher than that of the metallic material. The heat conducting members (,) are positioned between the heaters (,) and the sheet contact faces (,), respectively.

Heat sealer for synthetic resin bag

A weighing machine, such as a combinational weighing machine, has scale cells and a plurality of dummy cells installed on the same floor. The scale cells output weight signals corresponding to the weights of objects being loaded. The mode of vibrations of the floor is detected from dummy signals from the dummy cells, vertical displacements of the floor at the positions of the scale cells are calculated, and their effects are eliminated from the weight signals. Those of the scale cells not selected after a cycle of combinational calculations can be used as dummy cells in the next cycle. A memory device may be provided to store preferred combinations of such scale cells not selected that may be used for this purpose. Effects of the floor vibrations can be eliminated more accurately if the differences in sensitivity among the cells due to physical characteristics of the individual cells and/or due to the different loads on them can be taken into account either by a feedback calculation or by a formula.

Method of and means for correcting effects of floor vibrations on weight

A multi-point cell type weighing machine has a plural number of scale cells set on a floor to support a table and to output weight signals indicative of weights measured thereby of a target object placed on the table. One or more floor vibration detecting cells are set on the same floor and output floor vibration detection signals indicative of the vibrations of the floor. The weight signals are corrected on the basis of vibration components of the floor vibration detection signals. A standard weight is placed at a larger plural number of places on the table than there are scale cells and output sensitivity ratios among the scale cells are calculated from outputted values from the scale cells, and the weight signals are further corrected on the basis of the output sensitivity ratios. These weight signals are added together and the weight of the target object is obtained from the added signal. A plurality of floor vibration detecting cells may be set on the floor, each near different one of the scale cells, or they may be set anywhere on the floor and a mode of floor vibrations may calculated from their outputs. A single floor vibration detecting cell may be set between the scale cells. The table is supported by the scale cells through elastic pieces such that only vertical forces are communicated to the scale cells.

Multi-point cell type weighing machines

A weighing device has not only a scale cell which weighs an object and outputs a weight signal indicative of the measured weight value but also a vibration-detecting load cell for detecting the vibrations of the floor to which the scale cell is set such that the effects of the floor vibrations can be subtracted from the weight value detected by the scale cell. The vibration-detecting load cell has attenuation-adjusting members adhesively attached to strain-generating parts of its load-sensitive element such that the attenuation constant of the load cell is thereby increased at least by a factor of 2. The usable dynamic range of the load cell can thus be increased while the load cell is kept compact. Butyl rubber members can be used for this purpose.

Load cell for detecting vibrations and weighing device comprising same

A weighing apparatus has a scale cell and a dummy cell, both similarly structured and cantilevered. A load to be measured is applied to the free end of the scale cell and a standard weight is attached to the free end of the dummy cell. Analog electrical signals from these cells are converted to digital data. The effect of the standard weight is removed from the digital data from the dummy cell to obtain the effect of external vibrations which effect is multiplied by a suitable coefficient dependent on the applied load and subtracted from the digital data from the scale cell.

Weighing apparatus with means for correcting effects of vibrations

In a volume determination process, a slit pattern is projected obliquely downwardly, or slit patterns are projected obliquely downwardly and upwardly, onto an article which is at rest or in motion. The slit pattern or patterns are in the form of a parallel stripe pattern or a grid pattern. The surface or surface onto which the slit pattern or patterns are projected are imaged by a television camera, and the heights of slit positions on the article are computed on the basis of the image or images picked up by the television camera. The volume of the article is computed on the basis of the computed heights of the slit positions. The weight of the article can be derived by multiplying the volume by the specific gravity of the article. It is determined whether there is a surface flaw or not by determining whether differentials of the slit pattern or patterns are discrete or not.

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Shiga, Japan

Yoshihiro Nakamura