Patent FR-2991898-A1 (FR)
Title: Device, useful for cutting cement bag into two parts in a field of construction, comprises receptacle formed by two supports movable between a cutting configuration and a gripping configuration, and guidance unit to guide cutting unit
Inventor: VALVERDE FRANCK
IPC: B25H1/00
Filed: 2012-06-14
Abstract: The device comprises: a unit (4) for cutting a container into two parts (2.1, 2.2) when an operator actuates the cutting unit; a receptacle adapted to receive the container and formed by two supports (6.1, 6.2) movable between a cutting configuration and a gripping configuration; and a guidance unit to guide the cutting unit according to an overall vertical direction at the time of cutting of the container placed out of the receptacle so that the cutting unit has an upward motion between a low position and a high position. The cutting unit in low position is placed under the receptacle. The device comprises: a unit (4) for cutting a container into two parts (2.1, 2.2) when an operator actuates the cutting unit; a receptacle adapted to receive the container and formed by two supports (6.1, 6.2) movable between a cutting configuration, in which the supports are juxtaposed and separated by an opening (8) adapted for the passage from the cutting unit, and a gripping configuration, in which each support places the respective cut parts in a position for allowing the gripping of the cut part by an operator and the maintenance of a pulverulent material in the cut parts; and a guidance unit arranged to guide the cutting unit according to an overall vertical direction at the time of cutting of the container placed out of the receptacle so that the cutting unit has an upward motion between a low position and a high position. The cutting unit in low position is placed under the receptacle. The device further comprises: a first connection unit arranged to allow a swiveling of each support between the cutting configuration and the gripping configuration and around a respective fulcrum pin extending parallel to the opening; two handles (12, 13) connected to the cutting unit to enable the operator to draw the cutting unit according to a vertical and upward movement; a first biasing member arranged to bring the cutting unit in the low position; a second biasing member arranged respectively to bring each support back to the cutting configuration after the operator is unloaded the respective supports of the cut parts; and a fixed structure such as feet arranged to place the receptacle at a height from 1 meter above the horizontal ground. Each support is tilted compared to a horizontal ground at an angle of 50-80[deg] degrees in the gripping configuration. The handles are located close to a transverse side of the cutting unit. The receptacle has a shape of a rectangle with length of 500-1000 mm and width of 300-500 mm. The opening transversely extends to a longitudinal direction from the receptacle and on a level from half the length of the receptacle. The second biasing members exert a return effort that is lower than the effort exerted by the cut parts. The supports include plates that are coplanar in the cutting configuration. Each support includes a wall arranged to retain the cut parts in the gripping configuration and placed on a side of the respective support opposed to the opening. The opening extends on a major part of the width of the receptacle. The cutting unit include a blade whose thread has shape of a V reversed. The guidance unit is formed by two guide links extending parallel to a direction of upward movement of the blade.