초록 ▼

A method for forming a grommet element including two successive steps which are performed on an assembly of conduits, such as cables or wires. The first step consists of sealing the conduit assembly under pressure, while the second step involves molding PVC or another thermoplastic elastomer over th

A method for forming a grommet element including two successive steps which are performed on an assembly of conduits, such as cables or wires. The first step consists of sealing the conduit assembly under pressure, while the second step involves molding PVC or another thermoplastic elastomer over the sealed structure to form the grommet. A mold is also provided for carrying out the method. The mold includes a stationary portion and an axially movable portion. Preferably, the method includes at least one of the following operations or steps: (a) Installing respective connecting terminals on the conduits; (b) Forming a conduit assembly from a plurality of individual conduits, and banding together two proximal points of the conduit assembly; (c) Introducing the conduit assembly into the lower part of a mold; (d) Closing the mold; (e) Moving the two aforementioned proximal points closer together to produce flexural buckling of the conduits in the conduit assembly; (f) Introducing an adhesive mass into the mold, under pressure, at an elevated temperature, during a predetermined period of time; (g) Injecting the hot adhesive between the conduits of the conduit assembly; (h) Cooling the mold to solidify the adhesive; and (i) Molding PVC or another thermoplastic elastomer over the adhesive-sealed conduit assembly, to form a grommet element, and joining the thus sealed conduit assembly to a flange or dividing wall.

대표청구항 ▼

[ I claim:] [1.] A method for manufacturing a conduit grommet containing a conduit assembly consisting of a plurality of individual conduits, and having a positioning and fixation elements for securing the conduit grommet to a dividing wall, said method comprising the steps of:moving two proximal po

[ I claim:] [1.] A method for manufacturing a conduit grommet containing a conduit assembly consisting of a plurality of individual conduits, and having a positioning and fixation elements for securing the conduit grommet to a dividing wall, said method comprising the steps of:moving two proximal points of the conduit assembly closer together to produce a slight bowing of the plurality of conduits of the conduit assembly to increase the area between adjacent conduits of the conduit assembly;sealing the conduit assembly under pressure by injecting a hot adhesive between the plurality of conduits of the conduit assembly while said conduit assembly is contained in a mold having two separable mold sections, to produce a sealed conduit assembly, one of said two mold sections including a stationary part, a radially movable and axially stationary part and a radially movable part, and the other of said two mold sections including an axially movable part, an axially movable and radially stationary part and an axially and radially movable part; andmolding PVC or other thermoplastic elastomers over the sealed conduit assembly, to form a grommet element;said moving of the two proximal points of the conduit assembly closer together to produce slight bowing of the plurality of conduits of the conduit assembly includes axially moving said other mold section of the mold toward said one mold section of the mold.