SU614139A1 - Attachment for folding-over article margin in sewing machine - Google Patents

Description

(54) FITTINGS FOR FITTING THE EDGE DETAILS ON SEWING. MACHINE

. The invention relates to the automation of the processes of sewing production and can be used in other branches of the national economy, where the processing of products from textile materials with hem edge is performed.

A device for bending the edge of a part on a sewing machine is known, comprising a table connected to the platform of the sewing machine, a part edge former and a tube with air nozzles connected to the part edge form. 1

The known device bends the edge of the part with a relatively short distance between the folds (up to 30 mm) and reliably works only on fabrics of small thickness and stiffness.

The purpose of the invention is to expand the technological capabilities of the device by increasing the distance between the folds and reducing the possibility of bending the fabric with high rigidity.

This is achieved by the fact that the device for bending the edge of the part has a guide bar above the table for the part connected at one end to the former and the other end is articulated with the table by means of an adjustment element

with air nozzles mounted with the possibility of rotation to set the nozzles at an angle to the plane of the table.

The table can be made perforated and have air nozzles mounted in it.

The adjusting element for connecting the guide plate with the table is advisable to be made of a bracket and an adjusting screw. ,,

A tube with air nozzles can be pivotally mounted by means of a rack mounted on the table and an adjusting screw.

FIG. the described device is shown with a sewing machine, general view;

in fig. 2 - the same, side view; in fig. 3 -

stand (section aa of FIG. 2); in fig. four -

detail fold, slit.

The fixture contains a perforated table 1 with nozzles 2, 0 embedded in it; a former 3 edge parts mounted on a table in front of the sewing machine with a bracket 4; a guide bar 5, connected at one end with the former and the other by means of a hinge 6 and adjustment screw 7, with a support 8, tube 9 fixed to the table. With nozzles 10 connected with a flexible tube AND with a pneumatic system (not shown). Tube 9 {FIG. 3) is rotatably mounted inside rack 12 with screws 13. The rack mounted on the table is also rotated with screws AND, the Device operates as follows: the processor places the workpiece on table I. The workpiece edge under the guide bar 5 bends, bends the edge of the bend 6 (Fng. 4), mixes the part in the former 3. where the section of the part bends fto the bend & After turning on the machine, the part with the help of nozzles 2 and 10 is pressed against the guide bar 5. With the help of nozzles 10, the resistance of the upper layers of the folded part is reduced and the rigid parts are easier to be fed into the edge former 6, and the presence of the tube allows you to D «x: atomic large. Changing the position of the tube 9 relative to the table using the stand 12 and the nozzles 10 by rotating the tube 9 in this stand allows the air flow applied to the upper layer of the folded fabric to be varied depending on the latter. of the invention. The capacity for hemming the edges of the machine, containing a table, soybean with the sewing machine platform, a part edge former and an air line tube associated with the edge former, characterized in that Have a guide bar located above the table for the part connected at one end to the former and the other is articulated with a table by means of a regulating element, the tube with air nozzles being rotatably mounted for mounting the nozzle at an angle to the plane of the table. 2. Device according to claim 1, characterized in that the table is perforated and has air nozzles mounted therein. 3 The device according to claim I. characterized in that the regulating element for connecting the guide plate with the table consists of a bracket and an adjusting screw. 4 A device according to claim 1, characterized in that the tube with air nozzles is simulated with the possibility of rotation by means of a stand mounted on a table and an adjusting screw. Sources of information taken for examination during examination: 1 US Patent No. 3543706, cl. D 05 B 35/04 (112-150), 1970.

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