Folding is one of the most important operation to prepare the upper consisting in folding upon itself the edge of a piece of an upper after skiving and coating it with glue.
This operation is performed by a machine that SAGITTA make since 1947 called:
Thermo Folding Machine
The Thermo Folding Machine folds the edge -already skived- parts of the shoe upper, using thermoplastic adhesive and operating cutting measures along concave and convex curves.
Versions level from simple to complex in the computer control of process parameters.
The Sagitta Folding Machines improve productivity and quality; any operator can get perfect results right from the first use of it.
The Thermo Folding Machine for upper edges of shoes, leather goods is able to control the glue, the variation of the feeding speed in the external curves, the knife for the internal curves.
The main adjustable parameters are:
Speed from 0 to 2500 rpm
Working Feed from 0,5 to 6 mm.
Folding width with fixed guide 3,2 – 4 – 5 mm. or with adjustable guides from 3 to 7 and from 5 to 10 mm.
Sagitta folding machines can be equipped with many different optional devices to make special process:
French Bindig RBT device
Flat Insoles device
ROLL TOP device
Sagitta produce 4 different models of Folding Machines for uppers / bags and 2 different models of Folding Machines for Insoles.
RP 67 TE is a Thermo Folding Machine with clutch motor; the operator control the machine by the pedals: speed, feeding, cutting the internal curves.
RP 67 TE AIR is a Thermo Folding machine with hot air system to reactivate water based glue.
RP 67 TE AIR fold the edge in quick and accurate way by reactivating the glue with hot air blow. Result : a soft folding without any thickness, even on very difficult kinds of leather as they were folded by hand.
RP 67 TF3B is Thermo Folding Machine photocells controlled, with Efka motor with automatic positioning. Automatic control of: cement flow with programmable delay; feeding of external curves with programmable delay according with the speed; feeding for internal curves with programmable delay according with the speed and automatic cutting with adjustable step; easy selection of photosensors according of the geometry of the working leather uppers.
RP NOVA V4 Is a Computerized Thermo Folding Machine: all functions are controlled by a micro processor.RP NOVA V4 is able to fit the requirements of any single operator since this is machine store commands while making the first piece of work and then repeat this ones accurately leaving to the operator only the task to guide the piece of work. RP NOVA V4 stops with the hammer in an open position and sets in the automatic glue suction preventing the glue from falling down on the upper and consequently stain it.
RP 68 TE is a Thermo Folding Machine for insoles covering equipped with a special foot holder adjustable in height and a foot that can run into its own housing so that to process easily also with high and complex insoles.
With SAGITTA Thermo Folding Machines model RP 68 TE is possible to fold the insoles covering with thickness up to mm. 12
RP 68 TE μP AIR
Folding Machine for Insoles
Folding Machine with hot air system to reactivate water based glue.RP 68 TE µP AIR fold the edge in a quick and accurate way by reactivating the glue with a hot air blow.
Result: a soft folding without any thickness, even on very difficult kinds of leather as they were folded by hand. Available in two models: front or side processing