Machine for the automatic tension of belts for the furniture industry
OwnerGiuseppe Seroldiinventor
Life of this patent
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Abstract
This invention relates to an improved machine for the automatic tension of belts for the furniture industry. The machine at issue is capable of automatically feeding a plurality of belts (4) to fasten to the frames (2) used to produce seats or backrests of armchairs, sofas or similar, and which is equipped with means (9) suited to strain the belts, once these have been fastened by an end to the frame, all with the same force. The machine is characterized by the fact that each tensioner (9) operates on a single belt and that said means are pneumatically activated by means of a common circuit, so that each tensioner applies on the belt the same force of traction.
Claims14
Machine for the automatic tension of belts for the furniture industry, of the kind comprising means (25, 26) suited to hold the frame (2) of a piece of furniture, means (13) suited to feed a plurality of belts to be fastened to said frame, and means (9) suited to strain said belts once these have been fastened by an end to the frame, characterised by the fact that devices are provided, suited to strain each a single belt, with predetermined force.
Machine for the tension of belts according to each of the previous claims wherein the belts travel around a series of guide rollers (6) and coil up in the opposite direction around at least one couple of rollers (7, 8) placed side by side, characterised by the fact that each of said belts is subject to the action of tensioners (9) pulling said belts, so that each of them be overlapped on a portion of belt at the top of said tensioners to block it by friction against the respective guide rollers, and afterwards strain the portion of belt included among said guide rollers and the piece of furniture, with predetermined force, the same for all the belts.
Tension machine according to each of the previous claims characterised by the fact to be equipped with means (13) suited to automatically feed the belts, said means can be singularly inserted.
Tension machine according to any one of the previous claims, characterised by the fact to be equipped with means (25, 26) suited to block the frame of the piece of furniture during the tension of the belts.
Machine according to each of the previous claims, characterised in that the support plane (28) of the piece of furniture mounted on a plurality of threaded shafts (30) engaged by the same number of nuts (29) mounted on the machine frame, means (32) being provided, suited to simultaneously rotate said nuts (29).
Machine according to the previous claim, wherein said means consist of a chain (32) activated by a geared motor (33) and which simultaneously engages said nuts (29).
Dependencies are inferred from the claim text.