Apparatus for cutting pieces of material into appropriate shaped portions
AssigneeBierrebi S.p.A.
InventorCesare Beccari
Life of this patent
Estimating the term…
Abstract
An apparatus for cutting a material having prevalently two-dimensional extension into appropriately shaped portions, in particular for cutting a fabric or the like into shaped portions for the manufacture of clothing items or other items, comprising a support frame (12), means (22) for supporting said material (16), means for supporting cutting means (20). Said cutting means (20) are movable, relative to said material (16) according to trajectories suited for effecting longitudinal, transverse, or otherwise oriented cuts into said material (16).
Claims96
An apparatus (10) for cutting a material into appropriately shaped portions, in particular for cutting a fabric or the like into shaped portions for the manufacture of clothing items or other items, comprising a support frame (12), means (22) for supporting said material (16), means (20) for cutting said material, said cutting means (20) and said material (16) being movable relative to each other according to suitable trajectories for the execution of cuts in said material (16), in which said means (22) for supporting said material (16) comprise a rigid surface defining contrasting means (22) for said cutting means (20), characterised in that said support plate (22) is made of glass having appropriate hardness.
An apparatus as claimed in any of previous claims, characterised in that said cutting means (20) are in the form of a circular cutting blade (20).
An apparatus as claimed in any of the previous claims, characterised in that it comprises at least a unit (18a, 18b, 18c) for cutting the material (16) able to support respective means (20) for cutting said material and able to actuate said cutting means (20) along predefined trajectories relative to the material (16).
An apparatus as claimed in any of the previous claims, characterised in that said cutting means (20) are able to revolve by effect of rolling on said material (16).
An apparatus as claimed in any of the previous claims, characterised in that said cutting means (20) are able to effect angular orienting movements according to two opposite angular directions.
An apparatus as claimed in any of the previous claims from 4 to 6, characterised in that said cutting unit (16) comprises means for supporting the cutting means (20), in the form of supporting means (24, 26, 28) able to move longitudinally and means (30) for supporting the cutting means (20) which are movable in a transverse direction relative to said longitudinally movable support means (24, 26, 28).
An apparatus as claimed in any of the previous claims from 8 to 10, characterised in that guiding and sliding means (32, 34) are provided between said transverse beam (24) and said block (38) for supporting the cutting means (20).
An apparatus as claimed in any of the previous claims from 9 to 11, characterised in that said means for orienting said cutting means (20) by rotating them by a predetermined angle comprise a driving shaft (46) actuated in rotation by corresponding motor means (48) situated on said support block (38).
An apparatus as claimed in any of the previous claims from 7 to 13, characterised in that said means for transversely moving (Y) said cutting means (20) comprise motor means (72) situated on said longitudinally movable support means.
An apparatus as claimed in any of the previous claims from 7 to 14, characterised in that said means for moving longitudinally (X) said cutting means (20) comprise motor means (82) situated on said longitudinally movable support means.
An apparatus as claimed in any of the previous claims from 1 to 22, characterised in that, downstream and at the level of said surface (22) for bearing the material, there extends a bearing plane (23, 23′) for a cut piece of said material.
An apparatus as claimed in any of the previous claims, characterised in that said material to be cut is in the form of a single layer (16) of material.
An apparatus as claimed in any of the previous claims from 26 to 28, characterised in that said roller means (96, 98) define means for sustaining said means (24, 26, 28, 30) for supporting the cutting means (20).
An apparatus as claimed in any of the previous claims from 26 to 30, characterised in that said retaining rollers (96, 98) present a peripheral profile having an anti-skid contact surface on the material to be cut (16).
An apparatus as claimed in any of the previous claims from 34 to 36, characterised in that said longitudinal advance means are in the form of continuous means extending longitudinally (90, 90), whereto said retaining means (96, 98) are connected, and in that means (100) are provided for advancing said continuous longitudinal means (90, 90) to cause the advance of said material (16).
An apparatus as claimed in any of the previous claims from 33 to 38, characterised in that means are provided for returning the respective cutting unit (18a, 18b, 18c) to the cutting position.
An apparatus as claimed in any of the previous claims from 46 to 49, characterised in that said means for varying the pressure that said cutting means (20) exert on the material (16) and/or for moving said cutting means from a lowered position for engaging and cutting said material (16) and a raised position for disengaging from said material (16) are in the form of means for varying the pressure of a pressurised fluid for driving an actuator (60) acting between said axially movable portion (40a) and said support block (38).
An apparatus as claimed in any of the previous claims from 46 to 51, characterised in that said elastic means (66) act to thrust, normally, said axially movable portion (40a) of said shaft (40) supporting the cutting means (20) opposing the thrusting action exerted by said actuator (60).
An apparatus as claimed in any of the previous claims from 53 to 58, characterised in that the means (120) able to weaken the material are sent on said material through said cutting means (20).
An apparatus as claimed in any of the previous claims from 53 to 59, characterised in that said weakening means (120) are operatively connected between said cutting means (20) and said support plate (22).
An apparatus as claimed in any of the previous claims, characterised in that means (MC) are provided for controlling the operation of the present apparatus.
An apparatus as claimed in any of the previous claims from 23 to 70, characterised in that it comprises a movable support plane (23′), in correspondence with the storage area (S) downstream of the cutting area (T), which is defined by a two-dimensional body, flexible or able to fold according to the longitudinal direction and which is moved between a horizontal laying position for receiving the cut material and a retracted position which allows the fall of said material in the cut condition.
An apparatus as claimed in any of the previous claims, characterised in that it comprise means able to move said cutting unit in the vertical direction between a lowered position, for engaging and cutting the material, and a raised position that allows to drive the cut piece towards a downstream storage and offloading area.
An apparatus as claimed in any of the previous claims form 80 to 82, characterised in that the surface for engaging the material (198a) of said engaging means is made of elastic material.
An apparatus according to any of the previous claims from 81 to 83, characterised in that said engaging surfaces (198a) are provided in correspondence with the lower face of corresponding transverse elements (198b).
An apparatus as claimed in any of the previous claims, characterised in that said sliding means comprise a first part, longitudinally fixed, which is sustained by the frame of the machine, in correspondence with said storage area (S), and a second part, longitudinally movable relative to the fixed part between an advanced position suitable to the engagement of the piece, in the cutting area (T), and a rear or recessed position in correspondence with said storage area (S).
Dependencies are inferred from the claim text.