摘要:
A work table for an automatic machine for cutting leathers and the like, includes a plurality of holes opening outwards and communicating with a vacuum source, to make portions of leathers to adhere to the active surface (3) of the work table (1). The work table (1) includes a central body (1a), supported by a fixed structure (2). At least one lateral portion (1h, 1j), connected to the fixed structure (2), is moved by first motion means (10h, 10j) between at least one work configuration (K1), in which its active surface (3h, 3j) is aligned with the active surface (3a) of the central body (1a), to define the active surface (3) of the work table (1), and a rest configuration (K2) of reduced dimension, in which the active surfaces (3a, 3h, 3j) of the central body (1a) and the lateral portion (1h, 1j) are arranged at an angle with respect to each other.
摘要:
In an apparatus for removable fastening of flat articles (2) to a work surface (1) for a machine for processing flat articles, e.g. leathers, the work surface (1) includes a plurality of fastening elements (3), which are selectively connected to suction means by respective valve means (10) to set under a vacuum effect the articles (2). Each of the valve means (10) includes a throttle valve (12), operated by a direct-current motor (21). The apparatus includes also sensor means (23) for detecting the motor (21) supply voltage and detecting variations with respect to the nominal voltage due to the motor rotation. Furthermore, the apparatus includes a sensor (24) detecting the current flowing through the motor (21) for detecting a motor (21) stop situation which is a consequence of reaching one of the extreme positions full open (A) and full closed (B) by the throttle valve (12).
摘要:
A device (10) for projecting profiles in a machine for cutting flat articles (2) includes a stationary support (11) that extends over the working plane of this machine; a pair of adjustable mirrors (12,13), first and second, respectively, connected to the stationary support (11) over the working plane (1); a projector (14) mounted on support means (15), which are driven to rotate alternatively between a first working position (A), in which the image generated by the projector is reflected by the first adjustable mirror (12) and projected in a first area (1a) of the working plane (1), and a second working position (B), in which the image generated by the projector (14) is reflected by the second adjustable mirror (13) and projected in a second area (1b) of the working plane (1). The device (10) includes also means (16), which drive the support means (15) to rotate.
摘要:
A device (10) for projecting profiles in a machine for cutting flat articles (2) includes a stationary support (11) that extends over the working plane of this machine; a pair of adjustable mirrors (12,13), first and second, respectively, connected to the stationary support (11) over the working plane (1); a projector (14) mounted on support means (15), which are driven to rotate alternatively between a first working position (A), in which the image generated by the projector is reflected by the first adjustable mirror (12) and projected in a first area (1a) of the working plane (1), and a second working position (B), in which the image generated by the projector (14) is reflected by the second adjustable mirror (13) and projected in a second area (1b) of the working plane (1). The device (10) includes also means (16), which drive the support means (15) to rotate.
摘要:
A method for cutting leathers for obtaining at least an article, comprising, in succession, steps of: positioning the leather (1) to be cut on a work plane (3); identifying on the leather (1) to be cut a profile (20) of at least an article (2) to be obtained; tracing on the leather (1) to be cut the profile (20) that has been identified; transferring the leather (1) to be cut on which the profile (20) has been traced to a remote manual cutting station (4); cutting the leather (1) by punch (5) at the traced profile (20), so as to obtain the article (2).
摘要:
A machine for cutting leathers (1), comprising: a structure (2) which circumscribes an operating area (3) where the leathers are to be laid, maintained stretched and still such as to allow cutting operations; at least an aspirating plane (4, 40) arranged at the operating area (3) and connected to a depression source (9) such as to maintain the leather stretched and still following activation of the depression source (9); a cutting unit (5), borne by the structure (2), arranged above the operating area (3) and movable with respect thereto, such as to realise the cut In the leathers in the operating area (3); the machine (1) comprising at least two closed-loop belts (6, 66) made of a permeable material and flanked to one another, each comprising an upper branch (60, 606) and a lower branch (61, 616), each of the belts (6, 68) being arranged such that the upper branch (60, 606) thereof remains above and in proximity of the aspirating plane (4, 40), in order to restingly receive the leathers to be cut and in order to enable laying of the leathers thereon; the belts (6, 66) being attracted by the aspirating plane (4, 40) following activation of the depression source (9), such that the leathers thereon remain stretched and still; the structure (2) comprising an outlet passage (7) of the leathers, arranged facing the upper branch (60, 606) of each of the belts (6, 66); each belt (6, 66) being activatable, following the completion of the cutting operations thereon, such that the relative upper branch (60, 606) is movable towards the outlet passage (7) in order for the cut leathers to be transferred out of the operating area (3), externally of the structure (2), independently of the other belt (6, 66).