Abstract: Disclosed herein is a load cell provided with a high-precision load-sensing member of ceramic on which are formed patterns of thin-film resistance for strain gages which are not subject to breakage and variation of resistance. The load cell comprises a bending beam of ceramic material and strain gages of thin-film resistance formed thereon, with the bending beam having a surface coated with amorphous glass on which are formed said strain gages of thin-film resistance. The strain gages are formed from an alloy composed of iron and one or more selected from chromium, cobalt, tungsten, molybdenum, niobium, and tantalum, and a small amount of impurities.

Abstract: A wrapping apparatus designed so that an attractively wrapped package is obtained at all times irrespective of the kind of a film used and the shape of a tray selected. Namely, there is provided a wrapping apparatus of the type in which a predetermined cut length of film fed by a film feeding mechanism is extended at a predetermined portion of the wrapping apparatus, an article to be wrapped is raised into engagement with the extended film from therebelow by an elevator mechanism, and the edges of the film are folded under the bottom of the article, thereby wrapping the article in the film, by a film folding mechanism comprising left and right folding members and either a front or rear folding member, wherein an article mount section of the elevator mechanism has at least left and right head portions disposed at the left and right sides, respectively, and each constituted by a plurality of heads.

Abstract: A film folding control apparatus of a wrapping machine is a type in which a length of film fed by a film feeding mechanism is extended at a predetermined section of the wrapping machine. An article to be wrapped is raised into taut engagement with the extended film from therebelow. The edges of the film are folded under the bottom of the article, thereby wrapping the article in the film, by a film folding mechanism comprising left, right and front folding plates. The conrol apparatus comprises a data setting device for setting flim length data, film tension data and tray type data in dependence upon a numer of an article to be wrapped. A preset memory stores this data in correspondence with the number of the article to be wrapped. A control unit is responsive to an input of the number of the article to be wrapped.

Abstract: A film folding control apparatus of a wrapping machine is a type in which a length of film fed by a film feeding mechanism is extended at a predetermined section of the wrapping machine. An article to be wrapped is raised into taut engagement with the extended film from therebelow. The edges of the film are folded under the bottom of the article, thereby wrapping the article in the film, by a film folding mechanism comprising left, right and front folding plates. The control apparatus comprises a data setting device for setting film length data, film tension data and tray type data in dependence upon a number of an article to be wrapped. A preset memory stores this data in correspondence with the number of the article to be wrapped. A control unit is responsive to an input of the number of the article to be wrapped.

Abstract: A wrapping machine includes a mechanism for feeding a stretchable film, means for lift an article to be wrapped, a mechanism for underfolding the film, means for controlling the timing at which various elements of the wrapping machine are actuated, and means for adjusting the tension of the film. The film feeding mechanism clamps opposite edge portions of the film, which has been cut to a predetermined length, by a plurality of grippers to apply a prescribed tension to the film and extend the film at a predetermined position of the wrapping machine. The article lifting means is adapted to raise an article to be wrapped, which has been fed in by infeed conveyance means, into taut engagement with the film extended at the predetermined position.