Patent ID: 7793407

Claim:
An apparatus for enclosing exposure wire parts of coil springs in a spring assembly for a bed mattress, the exposure wire parts protruding vertically from either an upper edge member or a lower edge member of the spring assembly, wherein the coil springs are arranged spaced apart from one another at regular intervals along row and column directions (R/C) between the upper and lower edge members in the spring assembly, the apparatus comprising: a body on which the spring assembly is loaded and a vertical prop and a fixing stand are mounted in such a fashion as to be spaced apart from each other by a certain interval; a reel unit mounted at an upper portion of the vertical prop for winding a non-woven fabric therearound; a traction unit for pulling and hauling the non-woven fabric wound around the reel unit, by a predetermined length upon the operation of a cylinder; an elevator unit disposed between the vertical prop and the fixing stand for vertically pulling the non-woven fabric by a length sufficient to be inserted into the exposure wire parts of the coil springs upon the operation of a cylinder; a front insertion unit mounted at the fixing stand for pushing the non-woven fabric toward the exposure wire parts in a transverse direction of the exposure wire parts while rotating by means of cylinders; a side insertion unit mounted at the body for pushing the non-woven fabric toward both sides of the exposure wire parts while moving back and forth by means of a cylinder; an adhesive unit mounted at a side portion of the front insertion unit for fixing the non-woven fabric inserted into the exposure wire parts while ascending and descending by means of a cylinder; a feeder unit mounted on the body for horizontally moving the spring assembly by one step while moving back and forth by means of a cylinder; a cutter unit mounted on the body in such a fashion as to be positioned in a feed path of the spring assembly for cutting the non-woven fabric while ascending and descending by means of a cylinder; a support unit mounted below the front insertion unit for setting the height of the exposure wire parts while ascending and descending by means of a cylinder; and a controller C for receiving a signal indicating that the spring assembly is loaded on the body to generate an operating signal in response to the received signal for sequential application to the respective cylinders.